The moon jellyfi sh Aurelia spp.is a worldwide distributed scyphozoan species that seasonally blooms in coastal waters.Although the strobilation is directly responsible for the scale of jellyfi sh bloom,the underlying...The moon jellyfi sh Aurelia spp.is a worldwide distributed scyphozoan species that seasonally blooms in coastal waters.Although the strobilation is directly responsible for the scale of jellyfi sh bloom,the underlying mechanisms remain largely unknown.We exposed Aurelia coerulea polyps to 18 bioactive substances to test their ability to induce strobilation at the natural typically non-strobilation temperature of 21°C.Results revealed that A.coerulea polyps responded in four types.Type I—no change for estradiol,folic acid,iodine,retinoic acid,serotonin hydrochloride,and vitamin A.We suggested that 5-aza-2-deoxycytidine and N-acetyl-L-glutamic acid could not induce strobilation,since the percent of strobilated polyps in these two substances treatments was 3.3%and 1%,respectively.Type II—polyp body elongation for 3,5-diiodo-Ltyrosine,indole-3-acetic acid,L-dopamine,and noradrenaline treatments.Type III—transverse constrictions for L-thyroxine,progesterone,and melatonin treatments.Finally,Type IV—complete strobilation for 5-methoxy-2-methylindole,acetylcholine chloride,and indomethacin treatments,where the pre-strobilation periods were 2,4,and 2 days,and the mean numbers of ephyrae released per strobila were 4.7,5.7,and 5.7,respectively.The results reveal that indole derivatives,which contained methoxy or methyl pharmacophore,were the common strobilation inducer in the genus Aurelia.Iodinated organic compounds,catecholamine,acetylcholine chloride,and retinoic acid are species-specifi c strobilation inducer.Therefore,A.coerulea strobilation is regulated by neuronal and endocrine processes.Our fi ndings provide clues in understanding the mechanism of strobilation and contribute to developing specifi c strobilation antagonists in controlling moon jellyfi sh blooms.展开更多
This study was conducted to identify the biological active substances (BAS) from the fruit of <i>Tetrapleura tetraptera</i> obtained from Ghana. TLC, UV Spectroscopy and differential spectrophotometry meth...This study was conducted to identify the biological active substances (BAS) from the fruit of <i>Tetrapleura tetraptera</i> obtained from Ghana. TLC, UV Spectroscopy and differential spectrophotometry methods of analysis were employed in this study. Identified BAS included flavonoids, polysaccharides and amino acids. Following state pharmacopoeia of Ukraine (SPU) requirements to validate the developed techniques were employed in this study, and the following validation properties specificity, linearity, range, precision accuracy (convergence) and robustness was determined. These characteristics did not exceed the eligibility criteria as stated in (SPU) Appendix 2. Thus the technique can be made to the SPU monograph on fruits of <i>Tetrapleura tetraptera</i>.展开更多
Objective:Jue tone is a kind of sound,using 3-mi as the main tone,and is melodious,profound,makes people feel comfortable and pleasant.This study aimed to explore the probable mechanism of Jue tone to reduce blood pre...Objective:Jue tone is a kind of sound,using 3-mi as the main tone,and is melodious,profound,makes people feel comfortable and pleasant.This study aimed to explore the probable mechanism of Jue tone to reduce blood pressure(BP)in hypertensive rats with a liver-fire hyperactivity pattern by observing changes in BP as well as physiochemical indexes in plasma.Methods:Sixteen male spontaneous hypertensive rats(SHR)with a liver-fire hyperactivity pattern were randomly divided into a control group and a Jue tone group.The rats in the Jue tone group were treated with Jue tone(55e65 dB,played by the five elements of music rhythm instrument,a kind of physiotherapy regimen music played by Shen Wu)once a day for 4 weeks.The BP levels in each group were measured twice a week,on Monday and Friday.The levels of angiotensin II(Ang-II),thromboxane B2(TXB2),endothelin-1(ET-1),calcitonin gene-related peptide(cGRP),norepinephrine(NE),cortisol(CORT),and 5-hydroxytryptamine(5-HT).in plasma were detected by enzyme-linked immunosorbent assay after 4 weeks of intervention.Results:BP and the levels of TXB2 and ET-1 in the plasma of the treatment group were significantly lower than those of the control group,while the level of cGRP was significantly higher.Conclusion:Jue tone can reduce the BP of hypertensive rats with a liver-fire hyperactivity pattern.The mechanism may correlate with a reduction in TXB2 and ET-1 and an increase in cGRP with the reduction of reactive oxygen species(ROS).展开更多
In recent years, the Internet has received increasing recognition as an effective means of facilitating public health interventions. In particular, delivering prevention for substance use to school students via the In...In recent years, the Internet has received increasing recognition as an effective means of facilitating public health interventions. In particular, delivering prevention for substance use to school students via the Internet appears to be an area of great potential. The Climate Schools: Ecstasy and Emerging Drugs Module, a school-based prevention program, facilitated by the Internet, was developed to address the use of ecstasy and new and emerging drugs (Emerging Psychoactive Substances or Novel Psychoactive Substances). This four-lesson course was designed to be delivered to Australian adolescents (aged 15 to 16 years) during their standard health education classes at school, and is based on a harm-minimisation and social influence approach. The program was developed in response to the important public health challenge of new and emerging drugs as well as to address the prevention of ecstasy use among young people. To our knowledge, this will be the first school- and Internet-based prevention program specifically targeting these substances. This paper describes the process involved in developing this new Internet-based substance use prevention program.展开更多
Objectives To analyze the changes of vasoactive substances originated from endo- theiium in patients with unstable angina pectoris treated by modified thrombolytic therapy and explore the mech- anisms of the drug to t...Objectives To analyze the changes of vasoactive substances originated from endo- theiium in patients with unstable angina pectoris treated by modified thrombolytic therapy and explore the mech- anisms of the drug to treat unstable angina pectoris. Methods 120 patients with unstable angina pectoris who were not well responsed to common medication were studied. Their ECG stress tests were abnormal and there were ischemic changes in Holter. Urokinase 300,000 U was added in 100 ml normal saline and in- jected within 30 min once a day for 3 days. 300 mg as- pirin was administrated a day before and during uroki- nase applications. Before and after urokinase treat- ments , endothelin-1 , plasma tissue plasminogen activa- tor and its inhibitor-lwere determined. Results Compared with pretreatments, after treatments, the ac- tivities of tissue plasminogen activator increased, endo- thelin-1 and the inhibitor-1 decreased. The changes were significant. Conclusions Modified thrombolytic therapy can regulate the vasoactive substances origina- ted endotheiium in patients with unstable angina pecto- ris . The major substances include endothelin-1, plasma tissue plasminogen activator and inhibitor-1. This mechanism may suggest that urokinase can treat coro- nary heart disease effectively.展开更多
Okra( Abelmoschus esculentus L.) is a novel healthcare vegetable that has been developed rapidly in recent years in China.It contains abundant bioactive substances with significant healthcare functions.So far,many dom...Okra( Abelmoschus esculentus L.) is a novel healthcare vegetable that has been developed rapidly in recent years in China.It contains abundant bioactive substances with significant healthcare functions.So far,many domestic research institutions have carried out researches about the extraction technology of bioactive substances and their healthcare functions.At present,tender pods and other organs of A.esculentus are mainly used freshly and directly,but rare products have been processed and developed.In this paper,the research progress of bioactive substances and processing of A.esculentus was summarized,aiming at providing reference for the deep processing and comprehensive utilization of A.esculentus in the future in China.展开更多
Purpose: To identify, analyze and synthetize the scientific evidences that support Early Life Stress (ELS) diagnosis using the Childhood Trauma Questionnaire (CTQ), since it assumes the use of psychoactive substances ...Purpose: To identify, analyze and synthetize the scientific evidences that support Early Life Stress (ELS) diagnosis using the Childhood Trauma Questionnaire (CTQ), since it assumes the use of psychoactive substances later in adolescence and adulthood. Individuals that experienced some form of childhood stress may present, in adulthood, consequences that manifest into mental disorders such as problematic use of psychoactive substances. Methods: An integrative review of the literature on the subject in the databases: PubMed, Web of Science, LILACS and Psycinfo, regards studies that have been indexed in the last ten years (2003-2014). Combination of controlled and uncontrolled factors in the use and abuse of psychoactive substances, CTQ and ELS adapted to each database. Findings: The alcohol was the most used drug by the participating subjects of these research;mostly, the use of psychoactive drugs, started when they were still in adolescence;ELS and the later use of psychoactive drugs can be found more frequently in female;the lack of internal resources for dealing with stress in adulthood after ELS occurrence may have as a consequence the use of psychoactive drugs as a coping mechanism. Conclusions: It was possible to identify scientific evidences that support the ELS diagnosis, measured by the CTQ, as a determining factor for the use and abuse of alcohol and/or other psychoactive drugs in adolescence and adulthood. Implications: Investigate the ELS as a strategy to improve the therapeutic project of patients in nursing care, which will be built based on scientific evidence, so it can be more effective.展开更多
在现在的评论，我们首先总结主要好处，限制和陷井在在内分泌的活跃物质(EAS ) 的情况下在啮齿类动物估计男繁殖结构和功能的 vivo 途径常规从他们可以提供的 postulate 的暴露能被外推到人的数据。然后，我们简短在我们最近在有机体水...在现在的评论，我们首先总结主要好处，限制和陷井在在内分泌的活跃物质(EAS ) 的情况下在啮齿类动物估计男繁殖结构和功能的 vivo 途径常规从他们可以提供的 postulate 的暴露能被外推到人的数据。然后，我们简短在我们最近在有机体水平开发了的啮齿类动物介绍一些综合途径。我们特别地在低剂量集中于这些物质的行动(恐鸟) 的可能的效果和模式，译解并且在混合物，真实条件并且在机关水平胎儿的睾丸上的精确效果和恐鸟。这能被考虑在里面啮齿类动物的试验性的 EAS 暴露仍然是的 vivo 第一种选择为学习并且是一个必要工具(和流行病学的途径) 为理解 EAS 的繁殖效果和恐鸟，如果啮齿类动物模型的陷井和限制被知道并且考虑。我们也提供古典啮齿类动物模型可以为学习 EAS 暴露，不是仅仅在繁殖的轴上而且在各种各样的神经质地调整的机关和纸巾，几在哺乳动物的复制的复杂过程在之中被含有上的多重后果被精制的一些证据。如此的模型组成接近人的暴露条件的一个有趣的方法。最后，我们证明 organotypic 文化模型是强大的互补工具，特别当集中于 MOA 时。所有这些途径在人的复制上以一种组合方式作出贡献到 EAS 暴露的影响的更好的理解。展开更多
Objective:To explore the predictive value of serum S1P and Adropin levels for the restenosis after cerebrovascular stent implantation and their relationship with vasoactive substances and cytokines.Methods:A total of ...Objective:To explore the predictive value of serum S1P and Adropin levels for the restenosis after cerebrovascular stent implantation and their relationship with vasoactive substances and cytokines.Methods:A total of 109 patients with cerebral infarction who accepted cerebrovascular stent implantation in our hospital between July 2012 and May 2016 were selected, their treatment outcome were reviewed, 35 patients with restenosis after cerebrovascular stent implantation were selected as observation group, and 74 patients without restenosis after cerebrovascular stent implantation were selected as control group. Serum S1P and Adropin levels were compared between two groups of patients before and after stent implantation, and the inner link of S1P and Adropin levels with vasoactive substance and cytokine levels in patients with restenosis after cerebrovascular stent implantation was further explored.Results: Before stent implantation, the differences in serum levels of S1P, Adropin, vasoactive substances and cytokines were not statistically significant between two groups of patients. After stent implantation, serum S1P and Adropin levels in observation group were lower than those in control group;serum vasoactive substance NO level was lower than that in control group while ET-1, TXB2 and AngⅡ levels were higher than those in control group;serum inflammatory factors TNF-α, IL-6, IL-10 and IL-13 levels were higher than those in control group. Pearson test showed that serum S1P and Adropin levels in patients with restenosis after cerebrovascular stent implantation were directly correlated with the levels of vasoactive substances and cytokines.Conclusion: Serum S1P and Adropin are lowly expressed in patients with restenosis after cerebrovascular stent implantation, and their specific expression are directly correlated with the levels of vasoactive substances and inflammatory cytokines, and can be used as the reliable indexes for early prediction of restenosis after cerebrovascular stent implantation.展开更多
Objective:To study the effect of ulinastatin on vasoactive substances, oxidative stress and inflammatory response in patients with acute exacerbation of COPD.Methods:Patients with acute exacerbation of COPD who were t...Objective:To study the effect of ulinastatin on vasoactive substances, oxidative stress and inflammatory response in patients with acute exacerbation of COPD.Methods:Patients with acute exacerbation of COPD who were treated in Chengdu Fifth People's Hospital between August 2013 and July 2016 were selected as the research subjects and randomly divided into ulinastatin group and normal control group who received ulinastatin combined with conventional therapy and conventional therapy respectively. The serum contents of vasoactive substances, stress response hormones, oxidative stress products and inflammatory response mediators were detected before treatment and 7 d after treatment.Results: 7 d after treatment, serum D-D, AT-II, pro-BNP, ACTH, FC, NE, MDA, 8-iso-PG, HSP27, HSP70, PCT, CRP, CCL18 and MSP contents of both groups of patients were significantly lower than those before treatment while TT3 and TT4 contents were significantly higher than those before treatment;serum D-D, AT-II, pro-BNP, ACTH, FC, NE, MDA, 8-iso-PG, HSP27, HSP70, PCT, CRP, CCL18 and MSP contents of ulinastatin group 7 d after treatment were significantly lower than those of normal control group while TT3 and TT4 contents were significantly higher than those of normal control group.Conclusion:Ulinastatin therapy can correct the disturbance of vasoactive substances, and inhibit the oxidative stress and inflammatory response in patients with acute exacerbation of COPD.展开更多
Soybean is one of the important crops in China. Soymilk, a traditional neutral plant-based protein drink, is rich in high quality proteins. Although soybean milk is rich in nutrients, its marketing among consumers, es...Soybean is one of the important crops in China. Soymilk, a traditional neutral plant-based protein drink, is rich in high quality proteins. Although soybean milk is rich in nutrients, its marketing among consumers, especially those in Western countries who are used to peaceful flavor, has been limited due to the adverse flavor impact brought by its special composition. In recent years, with the increasing attention to the nutritional value of soymilk, the flavor of soymilk has become a popular research object for scholars at home and abroad. The flavor components of soymilk are mainly volatile small molecular compounds produced by enzymatic reactions catalyzed by lipoxygenase(LOX). After formation, they interact with protein macromolecules to form the overall flavor of soymilk. At present, there are many methods to control the off-odor of soymilk at home and abroad, including physical heating methods, chemical methods, biological enzymatic digestion methods, mask methods, and a variety of breeding methods. These methods effectively reduce the off-odor of soymilk, but all of them have shortcomings. Currently, the sensory characteristics of the beany odor in soymilk are evaluated mainly by traditional human sensory scoring along with the assistance of modern instrument analysis of volatile flavor substances using headspace solid phase microextraction(SPME) gas chromatography coupled with-mass spectrometry(GC-MS). This paper summarized the research results of volatile flavor substances in soymilk in recent years and the sensory evaluation methods of soymilk at home and abroad, and looked forward to the future development direction, hoping to provide some theoretical bases and reference detection methods for solving the problem of soymilk flavor in the future.展开更多
Dry-fermented sausages are a good source of bioactive peptides,whose stability against gastrointestinal(GI)digestion determines their bioaccessibility.This study focused on evaluating the effect of peptide extracts fr...Dry-fermented sausages are a good source of bioactive peptides,whose stability against gastrointestinal(GI)digestion determines their bioaccessibility.This study focused on evaluating the effect of peptide extracts from sausages fermented with Staphylococcus simulans QB7 during in vitro simulated GI digestion,including peptide profiles and antioxidant and anti-inflammatory activities.Peptides present in sausages were degraded during digestion,with molecular weight reduced from>12 kDa to<1.5 kDa.Besides,the content of amino acids increased from 381.15 to 527.07 mg/g,especially tyrosine being found only after GI digestion.The anti-inflammatory activities were increased after GI digestion,however,the changes in antioxidant activities were the opposite.A total number of 255,252 and 386 peptide sequences were identified in undigested,peptic-digested and GI-digested samples,respectively.PeptideRanker,BIOPEP-UWM and admetSAR were used to further predict the functional properties and intestinal absorption of the identified peptide sequences from GI digestion.Finally,18 peptides were discovered to possess either antioxidant or anti-inflammatory capacities.展开更多
Dehydrogenation is considered as one of the most important industrial applications for renewable energy.Cubic ceria-based catalysts are known to display promising dehydrogenation performances in this area.Large partic...Dehydrogenation is considered as one of the most important industrial applications for renewable energy.Cubic ceria-based catalysts are known to display promising dehydrogenation performances in this area.Large particle size(>20 nm)and less surface defects,however,hinder further application of ceria materials.Herein,an alternative strategy involving lactic acid(LA)assisted hydrothermal method was developed to synthesize active,selective and durable cubic ceria of<6 nm for dehydrogenation reactions.Detailed studies of growth mechanism revealed that,the carboxyl and hydroxyl groups in LA molecule synergistically manipulate the morphological evolution of ceria precursors.Carboxyl groups determine the cubic shape and particle size,while hydroxyl groups promote compositional transformation of ceria precursors into CeO_(2) phases.Moreover,enhanced oxygen vacancies(Vo)on the surface of CeO_(2) were obtained owing to continuous removal of O species under reductive atmosphere.Cubic CeO_(2) catalysts synthesized by the LA-assisted method,immobilized with bimetallic PtCo clusters,exhibit a record high activity(TOF:29,241 h^(-1))and Vo-dependent synergism for dehydrogenation of bio-derived polyols at 200℃.We also found that quenching Vo defects at air atmosphere causes activity loss of PtCo/CeO_(2) catalysts.To regenerate Vo defects,a simple strategy was developed by irradiating deactivated catalysts using hernia lamp.The outcome of this work will provide new insights into manufacturing durable catalyst materials for aqueous phase dehydrogenation applications.展开更多
Hericium erinaceus is a nutritious edible and medicinal fungi,rich in a variety of functional active ingredients,with various physiological functions such as antioxidation,anticancer,and enhancing immunity.It is also ...Hericium erinaceus is a nutritious edible and medicinal fungi,rich in a variety of functional active ingredients,with various physiological functions such as antioxidation,anticancer,and enhancing immunity.It is also effective in protecting the digestive system and preventing neurodegenerative diseases.In this review paper,we summarize the sources,structures and efficacies of the main active components in H.erinaceus fruiting body,mycelium,and culture media,and update the latest research progress on their biological activities and the related molecular mechanisms.Based on this information,we provide detailed challenges in current research,industrialization and information on the active ingredients of H.erinaceus.Perspectives for future studies and new applications of H.erinaceus are proposed.展开更多
Phosphate removal is crucial for eutrophication control and water quality improvement.Electro-assisted adsorption,an eco-friendly elec-trosorption process,exhibited a promising potential for wastewater treatment.Howev...Phosphate removal is crucial for eutrophication control and water quality improvement.Electro-assisted adsorption,an eco-friendly elec-trosorption process,exhibited a promising potential for wastewater treatment.However,there are few works focused on phosphate electro-sorption,and reported electrodes cannot attach satisfactory removal capacities and rates.Herein,electro-assisted adsorption of phosphate via in-situ construction of La active centers on hierarchically porous carbon(LaPC)has been originally demonstrated.The resulted LaPC composite not only possessed a hierarchically porous structure with uniformly dispersed La active sites,but also provided good conductivity for interfacial electron transfer.The LaPC electrode achieved an ultrahigh phosphate electrosorption capability of 462.01 mg g^(-1) at 1 V,outperforming most existing electrodes.The superior phosphate removal performance originates from abundant active centers formed by the coupling of electricfield and capture sites.Besides,the stability and selectivity toward phosphate capture were maintained well even under comprehensive conditions.Moreover,a series of kinetics and isotherms models were employed to validate the electrosorption process.This work demonstrates a deep understanding and promotes a new level of phosphate electrosorption.展开更多
Active tectonics in an area includes ongoing or recent geologic events.This paper investigates the tectonic influence on the subsidence,uplift and tilt of western Saurashtra through morphotectonic analysis of ten wate...Active tectonics in an area includes ongoing or recent geologic events.This paper investigates the tectonic influence on the subsidence,uplift and tilt of western Saurashtra through morphotectonic analysis of ten watersheds along with characteristics of relief and drainage orientation.Watersheds 7-9 to the north(N)are tectonically active,which can be linked with the North Kathiawar Fault System(NKFS)and followed by watersheds 6,10,1,4 and 5.Stream-length gradient index and sinuosity index indicate the effect of tectonic events along the master streams in watersheds 6-9.Higher R^(2)values of the linear curve fit for watershed 7 indicate its master stream is much more tectonically active than the others.The R^(2)curve fitting model and earthquake magnitude/depth analysis confirm the region to be active.The reactivation of the NKFS most likely led to the vertical movement of western Saurashtra.展开更多
Aging is a natural lifelong process ending in death. Many older people are living in poverty. Older people are generally considered dependent on others as they grow older. The purpose of this article is to explore the...Aging is a natural lifelong process ending in death. Many older people are living in poverty. Older people are generally considered dependent on others as they grow older. The purpose of this article is to explore the entrepreneurship activities of Nepalese older adults. Data for this study were collected from the project Help Age International (HAI) implemented in Nepal. Qualitative data observations and interviews were used to collect data. The findings of this study show the formation of the Older People’s Association (OPA) has supported many older people to participate outside the home in various social activities. Moreover, regular deposits through OPAs offer little help. OPAs support older people in their need of financial support to implement minor entrepreneurship. Older people who received support were pleased and were actively involved in their activities and also regularly deposited money in them. Subsequently, older people’s participation in social activities has increased and also helped to lower elderly abuse, loneliness, and depression. Local governments should promote such activities which will help with healthy aging.展开更多
High-static-low-dynamic-stiffness(HSLDS)vibration isolators with buckling beams have been widely used to isolate external vibrations.An active adjustable device composed of proportion integration(PI)active controllers...High-static-low-dynamic-stiffness(HSLDS)vibration isolators with buckling beams have been widely used to isolate external vibrations.An active adjustable device composed of proportion integration(PI)active controllers and piezoelectric actuators is proposed for improving the negative stiffness stroke of buckling beams.A nonlinear output frequency response function is used to analyze the effect of the vibration reduction.The prototype of the active HSLDS device is built,and the verification experiment is conducted.The results show that compared with the traditional HSLDS vibration isolator,the active HSLDS device can broaden the isolation frequency bandwidth,and effectively reduce the resonant amplitude by adjusting the active control parameters.The maximum vibration reduction rate of the active HSLDS vibration isolator can attain 89.9%,and the resonant frequency can be reduced from 31.08 Hz to 13.28 Hz.Therefore,this paper devotes to providing a new design scheme for enhanced HSLDS vibration isolators.展开更多
The Sichuan-Tibet transportation corridor is prone to numerous active faults and frequent strong earthquakes.While extensive studies have individually explored the effect of active faults and strong earthquakes on dif...The Sichuan-Tibet transportation corridor is prone to numerous active faults and frequent strong earthquakes.While extensive studies have individually explored the effect of active faults and strong earthquakes on different engineering structures,their combined effect remains unclear.This research employed multiple physical model tests to investigate the dynamic response of various engineering structures,including tunnels,bridges,and embankments,under the simultaneous influence of cumulative earthquakes and stick-slip misalignment of an active fault.The prototype selected for this study was the Kanding No.2 tunnel,which crosses the Yunongxi fault zone within the Sichuan-Tibet transportation corridor.The results demonstrated that the tunnel,bridge,and embankment exhibited amplification in response to the input seismic wave,with the amplification effect gradually decreasing as the input peak ground acceleration(PGA)increased.The PGAs of different engineering structures were weakened by the fault rupture zone.Nevertheless,the misalignment of the active fault may decrease the overall stiffness of the engineering structure,leading to more severe damage,with a small contribution from seismic vibration.Additionally,the seismic vibration effect might be enlarged with the height of the engineering structure,and the tunnel is supposed to have a smaller PGA and lower dynamic earth pressure compared to bridges and embankments in strong earthquake zones crossing active faults.The findings contribute valuable insights for evaluating the dynamic response of various engineering structures crossing an active fault and provide an experimental reference for secure engineering design in the challenging conditions of the Sichuan-Tibet transportation corridor.展开更多
基金Supported by the National Key R&D Program of China(No.2017YFC1404401)the National Natural Science Foundation of China(Nos.41606127,41976135)the Youth Talent Support Program of the Laboratory for Marine Ecology and Environmental Science,Pilot National Laboratory for Marine Science and Technology(Qingdao)(No.LMEESYTSP-2018-01-10)。
文摘The moon jellyfi sh Aurelia spp.is a worldwide distributed scyphozoan species that seasonally blooms in coastal waters.Although the strobilation is directly responsible for the scale of jellyfi sh bloom,the underlying mechanisms remain largely unknown.We exposed Aurelia coerulea polyps to 18 bioactive substances to test their ability to induce strobilation at the natural typically non-strobilation temperature of 21°C.Results revealed that A.coerulea polyps responded in four types.Type I—no change for estradiol,folic acid,iodine,retinoic acid,serotonin hydrochloride,and vitamin A.We suggested that 5-aza-2-deoxycytidine and N-acetyl-L-glutamic acid could not induce strobilation,since the percent of strobilated polyps in these two substances treatments was 3.3%and 1%,respectively.Type II—polyp body elongation for 3,5-diiodo-Ltyrosine,indole-3-acetic acid,L-dopamine,and noradrenaline treatments.Type III—transverse constrictions for L-thyroxine,progesterone,and melatonin treatments.Finally,Type IV—complete strobilation for 5-methoxy-2-methylindole,acetylcholine chloride,and indomethacin treatments,where the pre-strobilation periods were 2,4,and 2 days,and the mean numbers of ephyrae released per strobila were 4.7,5.7,and 5.7,respectively.The results reveal that indole derivatives,which contained methoxy or methyl pharmacophore,were the common strobilation inducer in the genus Aurelia.Iodinated organic compounds,catecholamine,acetylcholine chloride,and retinoic acid are species-specifi c strobilation inducer.Therefore,A.coerulea strobilation is regulated by neuronal and endocrine processes.Our fi ndings provide clues in understanding the mechanism of strobilation and contribute to developing specifi c strobilation antagonists in controlling moon jellyfi sh blooms.
文摘This study was conducted to identify the biological active substances (BAS) from the fruit of <i>Tetrapleura tetraptera</i> obtained from Ghana. TLC, UV Spectroscopy and differential spectrophotometry methods of analysis were employed in this study. Identified BAS included flavonoids, polysaccharides and amino acids. Following state pharmacopoeia of Ukraine (SPU) requirements to validate the developed techniques were employed in this study, and the following validation properties specificity, linearity, range, precision accuracy (convergence) and robustness was determined. These characteristics did not exceed the eligibility criteria as stated in (SPU) Appendix 2. Thus the technique can be made to the SPU monograph on fruits of <i>Tetrapleura tetraptera</i>.
基金The work was supported by Vertical Science Development Foundation of BUCM(2019-ZXFZJJ-039)National Innovation Training Program(201610026039)National Natural Science Foundation of China(81503382,81473521).
文摘Objective:Jue tone is a kind of sound,using 3-mi as the main tone,and is melodious,profound,makes people feel comfortable and pleasant.This study aimed to explore the probable mechanism of Jue tone to reduce blood pressure(BP)in hypertensive rats with a liver-fire hyperactivity pattern by observing changes in BP as well as physiochemical indexes in plasma.Methods:Sixteen male spontaneous hypertensive rats(SHR)with a liver-fire hyperactivity pattern were randomly divided into a control group and a Jue tone group.The rats in the Jue tone group were treated with Jue tone(55e65 dB,played by the five elements of music rhythm instrument,a kind of physiotherapy regimen music played by Shen Wu)once a day for 4 weeks.The BP levels in each group were measured twice a week,on Monday and Friday.The levels of angiotensin II(Ang-II),thromboxane B2(TXB2),endothelin-1(ET-1),calcitonin gene-related peptide(cGRP),norepinephrine(NE),cortisol(CORT),and 5-hydroxytryptamine(5-HT).in plasma were detected by enzyme-linked immunosorbent assay after 4 weeks of intervention.Results:BP and the levels of TXB2 and ET-1 in the plasma of the treatment group were significantly lower than those of the control group,while the level of cGRP was significantly higher.Conclusion:Jue tone can reduce the BP of hypertensive rats with a liver-fire hyperactivity pattern.The mechanism may correlate with a reduction in TXB2 and ET-1 and an increase in cGRP with the reduction of reactive oxygen species(ROS).
文摘In recent years, the Internet has received increasing recognition as an effective means of facilitating public health interventions. In particular, delivering prevention for substance use to school students via the Internet appears to be an area of great potential. The Climate Schools: Ecstasy and Emerging Drugs Module, a school-based prevention program, facilitated by the Internet, was developed to address the use of ecstasy and new and emerging drugs (Emerging Psychoactive Substances or Novel Psychoactive Substances). This four-lesson course was designed to be delivered to Australian adolescents (aged 15 to 16 years) during their standard health education classes at school, and is based on a harm-minimisation and social influence approach. The program was developed in response to the important public health challenge of new and emerging drugs as well as to address the prevention of ecstasy use among young people. To our knowledge, this will be the first school- and Internet-based prevention program specifically targeting these substances. This paper describes the process involved in developing this new Internet-based substance use prevention program.
文摘Objectives To analyze the changes of vasoactive substances originated from endo- theiium in patients with unstable angina pectoris treated by modified thrombolytic therapy and explore the mech- anisms of the drug to treat unstable angina pectoris. Methods 120 patients with unstable angina pectoris who were not well responsed to common medication were studied. Their ECG stress tests were abnormal and there were ischemic changes in Holter. Urokinase 300,000 U was added in 100 ml normal saline and in- jected within 30 min once a day for 3 days. 300 mg as- pirin was administrated a day before and during uroki- nase applications. Before and after urokinase treat- ments , endothelin-1 , plasma tissue plasminogen activa- tor and its inhibitor-lwere determined. Results Compared with pretreatments, after treatments, the ac- tivities of tissue plasminogen activator increased, endo- thelin-1 and the inhibitor-1 decreased. The changes were significant. Conclusions Modified thrombolytic therapy can regulate the vasoactive substances origina- ted endotheiium in patients with unstable angina pecto- ris . The major substances include endothelin-1, plasma tissue plasminogen activator and inhibitor-1. This mechanism may suggest that urokinase can treat coro- nary heart disease effectively.
基金Supported by Youth Scientific Research Fund of Shandong Academy of Agricultural Sciences(2014QNM55)
文摘Okra( Abelmoschus esculentus L.) is a novel healthcare vegetable that has been developed rapidly in recent years in China.It contains abundant bioactive substances with significant healthcare functions.So far,many domestic research institutions have carried out researches about the extraction technology of bioactive substances and their healthcare functions.At present,tender pods and other organs of A.esculentus are mainly used freshly and directly,but rare products have been processed and developed.In this paper,the research progress of bioactive substances and processing of A.esculentus was summarized,aiming at providing reference for the deep processing and comprehensive utilization of A.esculentus in the future in China.
文摘Purpose: To identify, analyze and synthetize the scientific evidences that support Early Life Stress (ELS) diagnosis using the Childhood Trauma Questionnaire (CTQ), since it assumes the use of psychoactive substances later in adolescence and adulthood. Individuals that experienced some form of childhood stress may present, in adulthood, consequences that manifest into mental disorders such as problematic use of psychoactive substances. Methods: An integrative review of the literature on the subject in the databases: PubMed, Web of Science, LILACS and Psycinfo, regards studies that have been indexed in the last ten years (2003-2014). Combination of controlled and uncontrolled factors in the use and abuse of psychoactive substances, CTQ and ELS adapted to each database. Findings: The alcohol was the most used drug by the participating subjects of these research;mostly, the use of psychoactive drugs, started when they were still in adolescence;ELS and the later use of psychoactive drugs can be found more frequently in female;the lack of internal resources for dealing with stress in adulthood after ELS occurrence may have as a consequence the use of psychoactive drugs as a coping mechanism. Conclusions: It was possible to identify scientific evidences that support the ELS diagnosis, measured by the CTQ, as a determining factor for the use and abuse of alcohol and/or other psychoactive drugs in adolescence and adulthood. Implications: Investigate the ELS as a strategy to improve the therapeutic project of patients in nursing care, which will be built based on scientific evidence, so it can be more effective.
文摘在现在的评论，我们首先总结主要好处，限制和陷井在在内分泌的活跃物质(EAS ) 的情况下在啮齿类动物估计男繁殖结构和功能的 vivo 途径常规从他们可以提供的 postulate 的暴露能被外推到人的数据。然后，我们简短在我们最近在有机体水平开发了的啮齿类动物介绍一些综合途径。我们特别地在低剂量集中于这些物质的行动(恐鸟) 的可能的效果和模式，译解并且在混合物，真实条件并且在机关水平胎儿的睾丸上的精确效果和恐鸟。这能被考虑在里面啮齿类动物的试验性的 EAS 暴露仍然是的 vivo 第一种选择为学习并且是一个必要工具(和流行病学的途径) 为理解 EAS 的繁殖效果和恐鸟，如果啮齿类动物模型的陷井和限制被知道并且考虑。我们也提供古典啮齿类动物模型可以为学习 EAS 暴露，不是仅仅在繁殖的轴上而且在各种各样的神经质地调整的机关和纸巾，几在哺乳动物的复制的复杂过程在之中被含有上的多重后果被精制的一些证据。如此的模型组成接近人的暴露条件的一个有趣的方法。最后，我们证明 organotypic 文化模型是强大的互补工具，特别当集中于 MOA 时。所有这些途径在人的复制上以一种组合方式作出贡献到 EAS 暴露的影响的更好的理解。
文摘Objective:To explore the predictive value of serum S1P and Adropin levels for the restenosis after cerebrovascular stent implantation and their relationship with vasoactive substances and cytokines.Methods:A total of 109 patients with cerebral infarction who accepted cerebrovascular stent implantation in our hospital between July 2012 and May 2016 were selected, their treatment outcome were reviewed, 35 patients with restenosis after cerebrovascular stent implantation were selected as observation group, and 74 patients without restenosis after cerebrovascular stent implantation were selected as control group. Serum S1P and Adropin levels were compared between two groups of patients before and after stent implantation, and the inner link of S1P and Adropin levels with vasoactive substance and cytokine levels in patients with restenosis after cerebrovascular stent implantation was further explored.Results: Before stent implantation, the differences in serum levels of S1P, Adropin, vasoactive substances and cytokines were not statistically significant between two groups of patients. After stent implantation, serum S1P and Adropin levels in observation group were lower than those in control group;serum vasoactive substance NO level was lower than that in control group while ET-1, TXB2 and AngⅡ levels were higher than those in control group;serum inflammatory factors TNF-α, IL-6, IL-10 and IL-13 levels were higher than those in control group. Pearson test showed that serum S1P and Adropin levels in patients with restenosis after cerebrovascular stent implantation were directly correlated with the levels of vasoactive substances and cytokines.Conclusion: Serum S1P and Adropin are lowly expressed in patients with restenosis after cerebrovascular stent implantation, and their specific expression are directly correlated with the levels of vasoactive substances and inflammatory cytokines, and can be used as the reliable indexes for early prediction of restenosis after cerebrovascular stent implantation.
文摘Objective:To study the effect of ulinastatin on vasoactive substances, oxidative stress and inflammatory response in patients with acute exacerbation of COPD.Methods:Patients with acute exacerbation of COPD who were treated in Chengdu Fifth People's Hospital between August 2013 and July 2016 were selected as the research subjects and randomly divided into ulinastatin group and normal control group who received ulinastatin combined with conventional therapy and conventional therapy respectively. The serum contents of vasoactive substances, stress response hormones, oxidative stress products and inflammatory response mediators were detected before treatment and 7 d after treatment.Results: 7 d after treatment, serum D-D, AT-II, pro-BNP, ACTH, FC, NE, MDA, 8-iso-PG, HSP27, HSP70, PCT, CRP, CCL18 and MSP contents of both groups of patients were significantly lower than those before treatment while TT3 and TT4 contents were significantly higher than those before treatment;serum D-D, AT-II, pro-BNP, ACTH, FC, NE, MDA, 8-iso-PG, HSP27, HSP70, PCT, CRP, CCL18 and MSP contents of ulinastatin group 7 d after treatment were significantly lower than those of normal control group while TT3 and TT4 contents were significantly higher than those of normal control group.Conclusion:Ulinastatin therapy can correct the disturbance of vasoactive substances, and inhibit the oxidative stress and inflammatory response in patients with acute exacerbation of COPD.
基金Supported by the Youth Fund Project of the National Natural Science Foundation of China(32001570)the Post-doctorate Program Funding in Heilongjiang Province(LBH-Z19118)the Academic Backbone'Project of Northeast Agricultural University(20XG11)。
文摘Soybean is one of the important crops in China. Soymilk, a traditional neutral plant-based protein drink, is rich in high quality proteins. Although soybean milk is rich in nutrients, its marketing among consumers, especially those in Western countries who are used to peaceful flavor, has been limited due to the adverse flavor impact brought by its special composition. In recent years, with the increasing attention to the nutritional value of soymilk, the flavor of soymilk has become a popular research object for scholars at home and abroad. The flavor components of soymilk are mainly volatile small molecular compounds produced by enzymatic reactions catalyzed by lipoxygenase(LOX). After formation, they interact with protein macromolecules to form the overall flavor of soymilk. At present, there are many methods to control the off-odor of soymilk at home and abroad, including physical heating methods, chemical methods, biological enzymatic digestion methods, mask methods, and a variety of breeding methods. These methods effectively reduce the off-odor of soymilk, but all of them have shortcomings. Currently, the sensory characteristics of the beany odor in soymilk are evaluated mainly by traditional human sensory scoring along with the assistance of modern instrument analysis of volatile flavor substances using headspace solid phase microextraction(SPME) gas chromatography coupled with-mass spectrometry(GC-MS). This paper summarized the research results of volatile flavor substances in soymilk in recent years and the sensory evaluation methods of soymilk at home and abroad, and looked forward to the future development direction, hoping to provide some theoretical bases and reference detection methods for solving the problem of soymilk flavor in the future.
基金financially supported by the National Natural Science Foundation of China (32272359)Natural Science and Engineering Research Council of Canada (NSERC,RGPIN-2018-04680)the scholarship from the China Scholarship Council (202106670005)。
文摘Dry-fermented sausages are a good source of bioactive peptides,whose stability against gastrointestinal(GI)digestion determines their bioaccessibility.This study focused on evaluating the effect of peptide extracts from sausages fermented with Staphylococcus simulans QB7 during in vitro simulated GI digestion,including peptide profiles and antioxidant and anti-inflammatory activities.Peptides present in sausages were degraded during digestion,with molecular weight reduced from>12 kDa to<1.5 kDa.Besides,the content of amino acids increased from 381.15 to 527.07 mg/g,especially tyrosine being found only after GI digestion.The anti-inflammatory activities were increased after GI digestion,however,the changes in antioxidant activities were the opposite.A total number of 255,252 and 386 peptide sequences were identified in undigested,peptic-digested and GI-digested samples,respectively.PeptideRanker,BIOPEP-UWM and admetSAR were used to further predict the functional properties and intestinal absorption of the identified peptide sequences from GI digestion.Finally,18 peptides were discovered to possess either antioxidant or anti-inflammatory capacities.
基金financial supports National Natural Science Foundation of China(22078365,21706290)Natural Science Foundation of Shandong Province(ZR2017MB004)+2 种基金Innovative Research Funding from Qingdao City,Shandong Province(17-1-1-80-jch)“Fundamental Research Funds for the Central Universities”and“the Development Fund of State Key Laboratory of Heavy Oil Processing”(17CX02017A,20CX02204A)Postgraduate Innovation Project(YCX2021057)from China University of Petroleum.
文摘Dehydrogenation is considered as one of the most important industrial applications for renewable energy.Cubic ceria-based catalysts are known to display promising dehydrogenation performances in this area.Large particle size(>20 nm)and less surface defects,however,hinder further application of ceria materials.Herein,an alternative strategy involving lactic acid(LA)assisted hydrothermal method was developed to synthesize active,selective and durable cubic ceria of<6 nm for dehydrogenation reactions.Detailed studies of growth mechanism revealed that,the carboxyl and hydroxyl groups in LA molecule synergistically manipulate the morphological evolution of ceria precursors.Carboxyl groups determine the cubic shape and particle size,while hydroxyl groups promote compositional transformation of ceria precursors into CeO_(2) phases.Moreover,enhanced oxygen vacancies(Vo)on the surface of CeO_(2) were obtained owing to continuous removal of O species under reductive atmosphere.Cubic CeO_(2) catalysts synthesized by the LA-assisted method,immobilized with bimetallic PtCo clusters,exhibit a record high activity(TOF:29,241 h^(-1))and Vo-dependent synergism for dehydrogenation of bio-derived polyols at 200℃.We also found that quenching Vo defects at air atmosphere causes activity loss of PtCo/CeO_(2) catalysts.To regenerate Vo defects,a simple strategy was developed by irradiating deactivated catalysts using hernia lamp.The outcome of this work will provide new insights into manufacturing durable catalyst materials for aqueous phase dehydrogenation applications.
基金supported by the fund from Natural Science Foundation of Zhejiang Province,China(LY17C200017)。
文摘Hericium erinaceus is a nutritious edible and medicinal fungi,rich in a variety of functional active ingredients,with various physiological functions such as antioxidation,anticancer,and enhancing immunity.It is also effective in protecting the digestive system and preventing neurodegenerative diseases.In this review paper,we summarize the sources,structures and efficacies of the main active components in H.erinaceus fruiting body,mycelium,and culture media,and update the latest research progress on their biological activities and the related molecular mechanisms.Based on this information,we provide detailed challenges in current research,industrialization and information on the active ingredients of H.erinaceus.Perspectives for future studies and new applications of H.erinaceus are proposed.
基金This work is financially supported by the National Science Foundation of Tianjin(17JCYBJC23300).
文摘Phosphate removal is crucial for eutrophication control and water quality improvement.Electro-assisted adsorption,an eco-friendly elec-trosorption process,exhibited a promising potential for wastewater treatment.However,there are few works focused on phosphate electro-sorption,and reported electrodes cannot attach satisfactory removal capacities and rates.Herein,electro-assisted adsorption of phosphate via in-situ construction of La active centers on hierarchically porous carbon(LaPC)has been originally demonstrated.The resulted LaPC composite not only possessed a hierarchically porous structure with uniformly dispersed La active sites,but also provided good conductivity for interfacial electron transfer.The LaPC electrode achieved an ultrahigh phosphate electrosorption capability of 462.01 mg g^(-1) at 1 V,outperforming most existing electrodes.The superior phosphate removal performance originates from abundant active centers formed by the coupling of electricfield and capture sites.Besides,the stability and selectivity toward phosphate capture were maintained well even under comprehensive conditions.Moreover,a series of kinetics and isotherms models were employed to validate the electrosorption process.This work demonstrates a deep understanding and promotes a new level of phosphate electrosorption.
基金Research Development Fund(IIT Bombay)supported SM。
文摘Active tectonics in an area includes ongoing or recent geologic events.This paper investigates the tectonic influence on the subsidence,uplift and tilt of western Saurashtra through morphotectonic analysis of ten watersheds along with characteristics of relief and drainage orientation.Watersheds 7-9 to the north(N)are tectonically active,which can be linked with the North Kathiawar Fault System(NKFS)and followed by watersheds 6,10,1,4 and 5.Stream-length gradient index and sinuosity index indicate the effect of tectonic events along the master streams in watersheds 6-9.Higher R^(2)values of the linear curve fit for watershed 7 indicate its master stream is much more tectonically active than the others.The R^(2)curve fitting model and earthquake magnitude/depth analysis confirm the region to be active.The reactivation of the NKFS most likely led to the vertical movement of western Saurashtra.
文摘Aging is a natural lifelong process ending in death. Many older people are living in poverty. Older people are generally considered dependent on others as they grow older. The purpose of this article is to explore the entrepreneurship activities of Nepalese older adults. Data for this study were collected from the project Help Age International (HAI) implemented in Nepal. Qualitative data observations and interviews were used to collect data. The findings of this study show the formation of the Older People’s Association (OPA) has supported many older people to participate outside the home in various social activities. Moreover, regular deposits through OPAs offer little help. OPAs support older people in their need of financial support to implement minor entrepreneurship. Older people who received support were pleased and were actively involved in their activities and also regularly deposited money in them. Subsequently, older people’s participation in social activities has increased and also helped to lower elderly abuse, loneliness, and depression. Local governments should promote such activities which will help with healthy aging.
基金Project supported by the National Natural Science Foundation of China(Nos.62188101,12272103,12022213)。
文摘High-static-low-dynamic-stiffness(HSLDS)vibration isolators with buckling beams have been widely used to isolate external vibrations.An active adjustable device composed of proportion integration(PI)active controllers and piezoelectric actuators is proposed for improving the negative stiffness stroke of buckling beams.A nonlinear output frequency response function is used to analyze the effect of the vibration reduction.The prototype of the active HSLDS device is built,and the verification experiment is conducted.The results show that compared with the traditional HSLDS vibration isolator,the active HSLDS device can broaden the isolation frequency bandwidth,and effectively reduce the resonant amplitude by adjusting the active control parameters.The maximum vibration reduction rate of the active HSLDS vibration isolator can attain 89.9%,and the resonant frequency can be reduced from 31.08 Hz to 13.28 Hz.Therefore,this paper devotes to providing a new design scheme for enhanced HSLDS vibration isolators.
基金supported by the National Natural Science Foundation of China(Grant Nos.41825018,41977248,42207219)the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(Grant No.2019QZKK0904)。
文摘The Sichuan-Tibet transportation corridor is prone to numerous active faults and frequent strong earthquakes.While extensive studies have individually explored the effect of active faults and strong earthquakes on different engineering structures,their combined effect remains unclear.This research employed multiple physical model tests to investigate the dynamic response of various engineering structures,including tunnels,bridges,and embankments,under the simultaneous influence of cumulative earthquakes and stick-slip misalignment of an active fault.The prototype selected for this study was the Kanding No.2 tunnel,which crosses the Yunongxi fault zone within the Sichuan-Tibet transportation corridor.The results demonstrated that the tunnel,bridge,and embankment exhibited amplification in response to the input seismic wave,with the amplification effect gradually decreasing as the input peak ground acceleration(PGA)increased.The PGAs of different engineering structures were weakened by the fault rupture zone.Nevertheless,the misalignment of the active fault may decrease the overall stiffness of the engineering structure,leading to more severe damage,with a small contribution from seismic vibration.Additionally,the seismic vibration effect might be enlarged with the height of the engineering structure,and the tunnel is supposed to have a smaller PGA and lower dynamic earth pressure compared to bridges and embankments in strong earthquake zones crossing active faults.The findings contribute valuable insights for evaluating the dynamic response of various engineering structures crossing an active fault and provide an experimental reference for secure engineering design in the challenging conditions of the Sichuan-Tibet transportation corridor.
