BACKGROUND The working environment of submarine crews is also very special.They are in a closed,high-temperature,high-noise,high-vibration and narrow working and living space for a long time,and they suffer from physi...BACKGROUND The working environment of submarine crews is also very special.They are in a closed,high-temperature,high-noise,high-vibration and narrow working and living space for a long time,and they suffer from physical discomfort caused by seasickness,which will affect the mental health of officers and soldiers.American psychologists have achieved positive results in psychological resilience training for officers and soldiers from the perspective of positive psychology.At present,there are few reports on the correlation between psychological resilience in the field of domestic research on submarine crew psychology,and it is necessary to conduct further research.METHODS A total of 121 soldiers working in a confined space of a large ship were randomly divided into an experimental group and a control group.The 50 soldiers in the experimental group were given a training course intervention,while the 71 soldiers in the control group did not receive any intervention measures.The Pittsburgh Sleep Quality Index,Psychological Resilience Scale,military Psycho-logical Stress Self-Assessment Questionnaire,and General Self-Efficacy Scale scores were compared before and 6 months after the intervention.RESULTS Under the positive psychological control intervention,except for sleep efficiency(P=0.05),the difference between the remaining dimensions of the Pittsburgh Sleep Quality Index scores and the total scores of the experimental group compared with the control group was statistically significant(P<0.05);the assessment of the psychological condition showed that,in addition to the Psychological Stress Self-assessment Questionnaire for Military Personnel scores(P=0.05),the scores of the Mental Toughness Scale(Dispositional Resilience Scale Resilience II)in the experimental group,General Self-Efficacy Scale scores were statistically significant(P<0.05)compared to pre-intervention.CONCLUSION Positive psychological intervention and control can improve the sleep state and psychological state of officers and soldiers working in confined space at sea.展开更多
Severe acute respiratory syndrome coronavirus-2 is a highly contagious positive-sense,single-stranded RNA virus that has rapidly spread worldwide.As of December 17,2023,772838745 confirmed cases including 6988679 deat...Severe acute respiratory syndrome coronavirus-2 is a highly contagious positive-sense,single-stranded RNA virus that has rapidly spread worldwide.As of December 17,2023,772838745 confirmed cases including 6988679 deaths have been reported globally.This virus primarily spreads through droplets,airborne transmission,and direct contact.Hospitals harbor a substantial number of confirmed coronavirus disease 2019(COVID-19)patients and asymptomatic carriers,accompanied by high population density and a larger susceptible population.These factors serve as potential triggers for nosocomial infections,posing a threat during the COVID-19 pandemic.Nosocomial infections occur to varying degrees across different countries worldwide,emphasizing the urgent need for a practical approach to prevent and control the intra-hospital spread of COVID-19.This study primarily concentrated on a novel strategy combining preventive measures with treatment for combating COVID-19 nosocomial infections.It suggests preventive methods,such as vaccination,disinfection,and training of heathcare personnel to curb viral infections.Additionally,it explored therapeutic strategies targeting cellular inflammatory factors and certain new medications for COVID-19 patients.These methods hold promise in rapidly and effectively preventing and controlling nosocomial infections during the COVID-19 pandemic and provide a reliable reference for adopting preventive measures in the future pandemic.展开更多
Objective In this study,we analyzed the transcriptome sequences of Kupffer cells exposed to simulated microgravity for 3 d and conducted biological experiments to determine how microgravity initiates apoptosis in Kupf...Objective In this study,we analyzed the transcriptome sequences of Kupffer cells exposed to simulated microgravity for 3 d and conducted biological experiments to determine how microgravity initiates apoptosis in Kupffer cells.Methods Rotary cell culture system was used to construct a simulated microgravity model.GO and KEGG analyses were conducted using the DAVID database.GSEA was performed using the R language.The STRING database was used to conduct PPI analysis.qPCR was used to measure the IL1B,TNFA,CASP3,CASP9,and BCL2L11 mRNA expressions.Western Blotting was performed to detect the level of proteins CASP3 and CASP 9.Flow cytometry was used to detect apoptosis and mitochondrial membrane cells.Transmission electron microscopy was used to detect changes in the ultrastructure of Kupffer cells.Results Transcriptome Sequencing indicated that simulated microgravity affected apoptosis and the inflammatory state of Kupffer cells.Simulated microgravity improved the CASP3,CASP9,and BCL2L11 expressions in Kupffer cells.Annexin-V/PI and JC-1 assays showed that simulated microgravity promoted apoptosis in Kupffer cells.Simulated microgravity causes M1 polarization in Kupffer cells.Conclusion Our study found that simulated microgravity facilitated the apoptosis of Kupffer cells through the mitochondrial pathway and activated Kupffer cells into M1 polarization,which can secrete TNFA to promote apoptosis.展开更多
Routine pediatric vaccination is one of the most effective public health inter-ventions for the control of a number of fatal diseases.However,during the coronavirus disease 2019 pandemic,routine pediatric vaccination ...Routine pediatric vaccination is one of the most effective public health inter-ventions for the control of a number of fatal diseases.However,during the coronavirus disease 2019 pandemic,routine pediatric vaccination rates were severely affected by disruptions of health services and vaccine confidence issues.Governments and the United Nations have taken measures to re-establish routine pediatric vaccination,while additional efforts are needed to catch up and develop plans to ensure routine vaccination services for the future pandemics.展开更多
BACKGROUND Emerging infectious diseases are a constant threat to the public’s health and health care systems around the world.Coronavirus disease 2019(COVID-2019),which was defined by the World Health Organization as...BACKGROUND Emerging infectious diseases are a constant threat to the public’s health and health care systems around the world.Coronavirus disease 2019(COVID-2019),which was defined by the World Health Organization as pandemic,has rapidly emerged as a global health threat.Outbreak evolution and prevention of international implications require substantial flexibility of frontline health care facilities in their response.AIM To explore the effect of the implementation and management strategy of prescreening triage in children during COVID-19.METHODS The standardized triage screening procedures included a standardized triage screening questionnaire,setup of pre-screening triage station,multi-point temperature monitoring,extensive screenings,and two-way protection.In order to ensure the implementation of the pre-screening triage,the prevention and control management strategies included training,emergency exercise,and staff protection.Statistical analysis was performed on the data from all the children hospitalized from January 20,2020 to March 20,2020 at solstice during the pandemic period.Data were obtained from questionnaires and electronic medical record systems.RESULTS A total of 17561 children,including 2652 who met the criteria for screening,192 suspected cases,and two confirmed cases without omission,were screened from January 20,2020 to March 20,2020 at solstice during the pandemic period.There was zero transmission of the infection to any medical staff.CONCLUSION The effective strategies for pre-screening triage have an essential role in the prevention and control of hospital infection.展开更多
Hepatocellular carcinoma(HCC)presents challenges due to its high recurrence and metastasis rates and poor prognosis.While current clinical diagnostic and prognostic indicators exist,their accuracy remains imperfect du...Hepatocellular carcinoma(HCC)presents challenges due to its high recurrence and metastasis rates and poor prognosis.While current clinical diagnostic and prognostic indicators exist,their accuracy remains imperfect due to their biol-ogical complexity.Therefore,there is a quest to identify improved biomarkers for HCC diagnosis and prognosis.By combining long non-coding RNA(lncRNA)expression and somatic mutations,Duan et al identified five representative lncRNAs from 88 lncRNAs related to genomic instability(GI),forming a GI-derived lncRNA signature(LncSig).This signature outperforms previously re-ported LncSig and TP53 mutations in predicting HCC prognosis.In this editorial,we comprehensively evaluate the clinical application value of such prognostic evaluation model based on sequencing technology in terms of cost,time,and practicability.Additionally,we provide an overview of various prognostic models for HCC,aiding in a comprehensive understanding of research progress in pro-gnostic evaluation methods.展开更多
At present, there is no effective treatment for the repair of the optic nerve after injury, or improvement of its microenvironment for regeneration. Intravitreally injected ciliary neurotrophic factor（CNTF） and olfa...At present, there is no effective treatment for the repair of the optic nerve after injury, or improvement of its microenvironment for regeneration. Intravitreally injected ciliary neurotrophic factor（CNTF） and olfactory ensheathing cells（OECs） promote the long-distance regrowth of severed optic nerve fibers after intracranial injury. Here, we examined the efficacy of these techniques alone and in combination, in a rat model of optic nerve injury. We injected condensed OEC suspension at the site of injury, or CNTF into the vitreous body, or both simultaneously. Retrograde tracing techniques showed that 4 weeks postoperatively, the number of surviving retinal ganglion cells and their axonal density in the optic nerve were greater in rats subjected to OEC injection only than in those receiving CNTF injection only. Furthermore, combined OEC ＋ CNTF injection achieved better results than either monotherapy. These findings confirm that OECs are better than CNTF at protecting injured neurons in the eye, but that combined OEC and CNTF therapy is notably more effective than either treatment alone.展开更多
Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus-2 has become a worldwide public health crisis.Studies have demonstrated that diabetes and dyslipidaemia are common comorbiditie...Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus-2 has become a worldwide public health crisis.Studies have demonstrated that diabetes and dyslipidaemia are common comorbidities and could be high-risk factors for severe COVID-19.Vitamin D,a group of fatsoluble compounds responsible for intestinal absorption of calcium,magnesium,and phosphate,has been widely used as a dietary supplement for the prevention and treatment of numerous diseases,including infectious and non-infectious diseases,due to its high cost-effectiveness;safety;tolerability;and anti-thrombotic,anti-inflammatory,antiviral,and immunomodulatory properties.In this letter to the editor,we mainly discuss the potential role of vitamin D in patients with diabetes,dyslipidaemia,and COVID-19.展开更多
In this editorial,we discuss the recent article by Zhao et al published in the World Journal of Diabetes,which highlights the importance of recognizing the risk indicators associated with diabetes mellitus(DM).Given t...In this editorial,we discuss the recent article by Zhao et al published in the World Journal of Diabetes,which highlights the importance of recognizing the risk indicators associated with diabetes mellitus(DM).Given the severe implications of healthcare-associated infections(HAIs)in hospitalized individuals-such as heightened mortality rates,prolonged hospitalizations,and increased costs-we focus on elucidating the connection between DM and nosocomial infections.Diabetic patients are susceptible to pathogenic bacterial invasion and subsequent infection,with some already harboring co-infections upon admission.Notably,DM is an important risk factor for nosocomial urinary tract infections and surgical site infections,which may indirectly affect the occurrence of nosocomial bloodstream infections,especially in patients with DM with poor glycemic control.Although evidence regarding the impact of DM on healthcare-associated pneumonias remains inconclusive,attention to this potential association is warranted.Hospitalized patients with DM should prioritize meticulous blood glucose management,adherence to standard operating procedures,hand hygiene practices,environmental disinfection,and rational use of drugs during hospitalization.Further studies are imperative to explore the main risk factors of HAIs in patients with DM,enabling the development of preventative measures and mitigating the occurrence of HAIs in these patients.展开更多
The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2 has brought serious challenges for the medical field.Patients with COVID-19 usually have respiratory symptoms.Ho...The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2 has brought serious challenges for the medical field.Patients with COVID-19 usually have respiratory symptoms.However,liver dysfunction is not an uncommon presentation.Additionally,the degree of liver dysfunction is associated with the severity and prognosis of COVID-19.Prevention,diagnosis,and treatment of malnutrition should be routinely recommended in the management of patients with COVID-19,especially in those with liver dysfunction.Recently,a large number of studies have reported that nutrition therapy measures,including natural dietary supplements,vitamins,minerals and trace elements,and probiotics,might have potential hepatoprotective effects against COVID-19-related liver dysfunction via their antioxidant,antiviral,anti-inflammatory,and positive immunomodulatory effects.This review mainly focuses on the possible relationship between COVID-19 and liver dysfunction,nutritional and metabolic characteristics,nutritional status assessment,and nutrition therapy to provide a reference for the nutritionists while making evidence-based nutritional decisions during the COVID-19 pandemic.展开更多
The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)is spreading at an alarming rate,and it has created an unprecedented health emergency threatening ten...The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)is spreading at an alarming rate,and it has created an unprecedented health emergency threatening tens of millions of people worldwide.Previous studies have indicated that SARS-CoV-2 ribonucleic acid could be detected in the feces of patients even after smearnegative respiratory samples.However,demonstration of confirmed fecal-oral transmission has been difficult.Clinical studies have shown an incidence rate of gastrointestinal(GI)symptoms ranging from 2%to 79.1%in patients with COVID-19.They may precede or accompany respiratory symptoms.The most common GI symptoms included nausea,diarrhea,and abdominal pain.In addition,some patients also had liver injury,pancreatic damage,and even acute mesenteric ischemia/thrombosis.Although the incidence rates reported in different centers were quite different,the digestive system was the clinical component of the COVID-19 section.Studies have shown that angiotensinconverting enzyme 2,the receptor of SARS-CoV-2,was not only expressed in the lungs,but also in the upper esophagus,small intestine,liver,and colon.The possible mechanism of GI symptoms in COVID-19 patients may include direct viral invasion into target cells,dysregulation of angiotensin-converting enzyme 2,immune-mediated tissue injury,and gut dysbiosis caused by microbiota.Additionally,numerous experiences,guidelines,recommendations,and position statements were published or released by different organizations and societies worldwide to optimize the management practice of outpatients,inpatients,and endoscopy in the era of COVID-19.In this review,based on our previous work and relevant literature,we mainly discuss potential fecal-oral transmission,GI manifestations,abdominal imaging findings,relevant pathophysiological mechanisms,and infection control and prevention measures in the time of COVID-19.展开更多
Dear Editor,An outbreak of an unknown infectious pneumonia has recently occurred in Wuhan,China.1 The pathogen of the disease was quickly identified as a novel coronavirus(SARS-CoV-2,severe acute respiratory syndrome ...Dear Editor,An outbreak of an unknown infectious pneumonia has recently occurred in Wuhan,China.1 The pathogen of the disease was quickly identified as a novel coronavirus(SARS-CoV-2,severe acute respiratory syndrome coronavirus 2),and the disease was named coronavirus disease-19(COVID-19).2 The virus has so far caused 78,959 confirmed cases and 2791 deaths in China according to the reports of government.COVID-19 has been spreading in many countries such as Japan,Korea,Singapore,Iran,and Italia.展开更多
OBJECTIVE To evaluate the associations of lipid indicators and mortality in Beijing Elderly Comprehensive Health Cohort Study.METHODS A prospective cohort was conducted based on Beijing Elderly Comprehensive Health Co...OBJECTIVE To evaluate the associations of lipid indicators and mortality in Beijing Elderly Comprehensive Health Cohort Study.METHODS A prospective cohort was conducted based on Beijing Elderly Comprehensive Health Cohort Study with 4499 com-munity older adults.After the baseline survey,the last follow-up was March 31,2021 with an average 8.13 years of follow-up.Cox proportional hazard model was used to estimate the hazard ratios(HR)with 95%CI for cardiovascular disease(CVD)death and all-cause death in associations with baseline lipid indicators.RESULTS A total of 4499 participants were recruited,and the mean levels of uric acid,body mass index,systolic blood pres-sure,diastolic blood pressure,fasting plasma glucose,total cholesterol(TC),triglyceride,and low-density lipoprotein cholesterol(LDL-C)showed an upward trend with the increasing remnant cholesterol(RC)quarters(Ptrend<0.05),while the downward tr-end was found in high-density lipoprotein cholesterol(HDL-C).During the total 36,596 person-years follow-up,the CVD mortal-ity and all-cause mortality during an average 8.13 years of follow-up was 3.87%(95%CI:3.30%-4.43%)and 14.83%(95%CI:13.79%-15.86%)with 174 CVD death participants and 667 all-cause death participants.After adjusting for confounders,the higher level of TC(HR=0.854,95%CI:0.730-0.997),LDL-C(HR=0.817,95%CI:0.680-0.982)and HDL-C(HR=0.443,95%CI:0.271-0.724)were associated with lower risk of CVD death,and the higher level of HDL-C(HR=0.637,95%CI:0.501-0.810)were associated with lower risk of all-cause death.The higher level of RC(HR=1.276,95%CI:1.010-1.613)increase the risk of CVD death.Com-pared with the normal lipid group,TC≥6.20 mmol/L group and LDL-C≥4.10 mmol/L group were no longer associated with lower risk of CVD death,while RC≥0.80 mmol/L group was still associated with higher risk of CVD death.In normal lipid gr-oup,the higher levels of TC,LDL-C and HDL-C were related with lower CVD death.CONCLUSIONS In community older adults,higher levels of TC and HDL-C were associated with lower CVD mortality in normal lipid reference range.Higher RC was associated with higher CVD mortality,which may be a better lipid indicator for es-timating the CVD death risk in older adults.展开更多
We employed a multiplex polymerase chain reaction （PCR） coupled with capillary electrophoresis （mPCR-CE） targeting six Clostridium difficile genes, including tPi, tcdA, tcdB, cdtA, cdtB, and a deletion in tcdC for...We employed a multiplex polymerase chain reaction （PCR） coupled with capillary electrophoresis （mPCR-CE） targeting six Clostridium difficile genes, including tPi, tcdA, tcdB, cdtA, cdtB, and a deletion in tcdC for simultaneous detection and characterization of toxigenic C. difficile directly from fecal specimens. The mPCR-CE had a limit of detection of 10 colony-forming units per reaction with no cross-reactions with other related bacterial genes. Clinical validation was performed on 354 consecutively collected stool specimens from patients with suspected C. difficile infection and 45 isolates. The results were compared with a reference standard combined with BD MAX Cdiff, real-time cell analysis assay （RTCA）, and mPCR-CE. The toxigenic C. difficile species were detected in 36 isolates and 45 stool specimens by the mPCR-CE, which provided a positive rate of 20.3% （81/399）. The mPCR-CE had a specificity of 97,2% and a sensitivity of 96.0%, which was higher than RTCA （χ^2 = 5.67, P = 0.017） but lower than BD MAX Cdiff （P = 0.245）. Among the 45 strains, 44 （97.8%） were determined as non- ribotype 027 by the mPCR-CE, which was fully agreed with PCR ribotyping. Even though ribotypes 017 （n = 8, 17.8%）, 001 （n = 6, 13.3%）, and 012 （n = 7, 15.6%） were predominant in this region, ribotype 027 was an important genotype monitored routinely. The mPCR-CE provided an alternative diagnosis tool for the simultaneous detection of toxigenic C. difficile in stool and potentially differentiated between RT027 and non-RT027.展开更多
BACKGROUND Inflammatory bowel disease,such as Crohn’s disease and ulcerative colitis,is characterized by chronic intestinal inflammation leading to intestinal mucosal damage.Inflammatory bowel disease causes dysregul...BACKGROUND Inflammatory bowel disease,such as Crohn’s disease and ulcerative colitis,is characterized by chronic intestinal inflammation leading to intestinal mucosal damage.Inflammatory bowel disease causes dysregulation of mucosal T cell responses,especially the responses of CD4+T cells.Previously,we demonstrated that indoleamine-2,3-dioxygenase plays an immunosuppressive role in 2,4,6-trinitrobenzene sulfate(TNBS)-induced colitis.Although indoleamine-2,3-dioxygenase exerts immunosuppressive effects by altering the local concentration of tryptophan(Trp)and immunomodulatory Trp metabolites,the specific changes in immune regulation during colitis caused by Trp metabolites and its related enzymes remain unclear.AIM To investigate role of kynurenine 3-monooxygenase(KMO)in TNBS-induced colitis and involvement of Trp metabolites in maintenance of intestinal homeostasis.METHODS Colitis was induced in eight-week-old male KMO+/+or KMO−/−mice of C57BL/6N background using TNBS.Three days later,the colon was used for hematoxylin-eosin staining for histological grading,immunohistochemical or immunofluorescence staining for KMO,cytokines,and immune cells.Inflammatory and anti-inflammatory cytokines were measured using quantitative RT-PCR,and kynurenine(Kyn)pathway metabolites were measured by high-performance liquid chromatography.The cell proportions of colonic lamina propria and mesenteric lymph nodes were analyzed by flow cytometry.RESULTS KMO expression levels in the colonic mononuclear phagocytes,including dendritic cells and macrophages increased upon TNBS induction.Notably,KMO deficiency reduced TNBS-induced colitis,resulting in an increased frequency of Foxp3+regulatory T cells and increased mRNA and protein levels of antiinflammatory cytokines,including transforming growth factor-βand interleukin-10.CONCLUSION Absence of KMO reduced TNBS-induced colitis via generation of Foxp3+regulatory T cells by producing Kyn.Thus,Kyn may play a therapeutic role in colon protection during colitis.展开更多
文摘BACKGROUND The working environment of submarine crews is also very special.They are in a closed,high-temperature,high-noise,high-vibration and narrow working and living space for a long time,and they suffer from physical discomfort caused by seasickness,which will affect the mental health of officers and soldiers.American psychologists have achieved positive results in psychological resilience training for officers and soldiers from the perspective of positive psychology.At present,there are few reports on the correlation between psychological resilience in the field of domestic research on submarine crew psychology,and it is necessary to conduct further research.METHODS A total of 121 soldiers working in a confined space of a large ship were randomly divided into an experimental group and a control group.The 50 soldiers in the experimental group were given a training course intervention,while the 71 soldiers in the control group did not receive any intervention measures.The Pittsburgh Sleep Quality Index,Psychological Resilience Scale,military Psycho-logical Stress Self-Assessment Questionnaire,and General Self-Efficacy Scale scores were compared before and 6 months after the intervention.RESULTS Under the positive psychological control intervention,except for sleep efficiency(P=0.05),the difference between the remaining dimensions of the Pittsburgh Sleep Quality Index scores and the total scores of the experimental group compared with the control group was statistically significant(P<0.05);the assessment of the psychological condition showed that,in addition to the Psychological Stress Self-assessment Questionnaire for Military Personnel scores(P=0.05),the scores of the Mental Toughness Scale(Dispositional Resilience Scale Resilience II)in the experimental group,General Self-Efficacy Scale scores were statistically significant(P<0.05)compared to pre-intervention.CONCLUSION Positive psychological intervention and control can improve the sleep state and psychological state of officers and soldiers working in confined space at sea.
基金Supported by Scientific Research Foundation of Shanghai Municipal Health Commission of Changning District,No.20234Y038.
文摘Severe acute respiratory syndrome coronavirus-2 is a highly contagious positive-sense,single-stranded RNA virus that has rapidly spread worldwide.As of December 17,2023,772838745 confirmed cases including 6988679 deaths have been reported globally.This virus primarily spreads through droplets,airborne transmission,and direct contact.Hospitals harbor a substantial number of confirmed coronavirus disease 2019(COVID-19)patients and asymptomatic carriers,accompanied by high population density and a larger susceptible population.These factors serve as potential triggers for nosocomial infections,posing a threat during the COVID-19 pandemic.Nosocomial infections occur to varying degrees across different countries worldwide,emphasizing the urgent need for a practical approach to prevent and control the intra-hospital spread of COVID-19.This study primarily concentrated on a novel strategy combining preventive measures with treatment for combating COVID-19 nosocomial infections.It suggests preventive methods,such as vaccination,disinfection,and training of heathcare personnel to curb viral infections.Additionally,it explored therapeutic strategies targeting cellular inflammatory factors and certain new medications for COVID-19 patients.These methods hold promise in rapidly and effectively preventing and controlling nosocomial infections during the COVID-19 pandemic and provide a reliable reference for adopting preventive measures in the future pandemic.
文摘Objective In this study,we analyzed the transcriptome sequences of Kupffer cells exposed to simulated microgravity for 3 d and conducted biological experiments to determine how microgravity initiates apoptosis in Kupffer cells.Methods Rotary cell culture system was used to construct a simulated microgravity model.GO and KEGG analyses were conducted using the DAVID database.GSEA was performed using the R language.The STRING database was used to conduct PPI analysis.qPCR was used to measure the IL1B,TNFA,CASP3,CASP9,and BCL2L11 mRNA expressions.Western Blotting was performed to detect the level of proteins CASP3 and CASP 9.Flow cytometry was used to detect apoptosis and mitochondrial membrane cells.Transmission electron microscopy was used to detect changes in the ultrastructure of Kupffer cells.Results Transcriptome Sequencing indicated that simulated microgravity affected apoptosis and the inflammatory state of Kupffer cells.Simulated microgravity improved the CASP3,CASP9,and BCL2L11 expressions in Kupffer cells.Annexin-V/PI and JC-1 assays showed that simulated microgravity promoted apoptosis in Kupffer cells.Simulated microgravity causes M1 polarization in Kupffer cells.Conclusion Our study found that simulated microgravity facilitated the apoptosis of Kupffer cells through the mitochondrial pathway and activated Kupffer cells into M1 polarization,which can secrete TNFA to promote apoptosis.
基金Supported by Scientific Research Foundation of Shanghai Municipal Health Commission of Changning District,No.20234Y038.
文摘Routine pediatric vaccination is one of the most effective public health inter-ventions for the control of a number of fatal diseases.However,during the coronavirus disease 2019 pandemic,routine pediatric vaccination rates were severely affected by disruptions of health services and vaccine confidence issues.Governments and the United Nations have taken measures to re-establish routine pediatric vaccination,while additional efforts are needed to catch up and develop plans to ensure routine vaccination services for the future pandemics.
文摘BACKGROUND Emerging infectious diseases are a constant threat to the public’s health and health care systems around the world.Coronavirus disease 2019(COVID-2019),which was defined by the World Health Organization as pandemic,has rapidly emerged as a global health threat.Outbreak evolution and prevention of international implications require substantial flexibility of frontline health care facilities in their response.AIM To explore the effect of the implementation and management strategy of prescreening triage in children during COVID-19.METHODS The standardized triage screening procedures included a standardized triage screening questionnaire,setup of pre-screening triage station,multi-point temperature monitoring,extensive screenings,and two-way protection.In order to ensure the implementation of the pre-screening triage,the prevention and control management strategies included training,emergency exercise,and staff protection.Statistical analysis was performed on the data from all the children hospitalized from January 20,2020 to March 20,2020 at solstice during the pandemic period.Data were obtained from questionnaires and electronic medical record systems.RESULTS A total of 17561 children,including 2652 who met the criteria for screening,192 suspected cases,and two confirmed cases without omission,were screened from January 20,2020 to March 20,2020 at solstice during the pandemic period.There was zero transmission of the infection to any medical staff.CONCLUSION The effective strategies for pre-screening triage have an essential role in the prevention and control of hospital infection.
基金The National Key R&D Program of China(Key Special Project for Marine Environmental Security and Sustainable Development of Coral Reefs 2022-3.3),No.2022YFC3103-004001Scientific Research Foundation of Shanghai Municipal Health Commission of Changning District,No.20234Y038.
文摘Hepatocellular carcinoma(HCC)presents challenges due to its high recurrence and metastasis rates and poor prognosis.While current clinical diagnostic and prognostic indicators exist,their accuracy remains imperfect due to their biol-ogical complexity.Therefore,there is a quest to identify improved biomarkers for HCC diagnosis and prognosis.By combining long non-coding RNA(lncRNA)expression and somatic mutations,Duan et al identified five representative lncRNAs from 88 lncRNAs related to genomic instability(GI),forming a GI-derived lncRNA signature(LncSig).This signature outperforms previously re-ported LncSig and TP53 mutations in predicting HCC prognosis.In this editorial,we comprehensively evaluate the clinical application value of such prognostic evaluation model based on sequencing technology in terms of cost,time,and practicability.Additionally,we provide an overview of various prognostic models for HCC,aiding in a comprehensive understanding of research progress in pro-gnostic evaluation methods.
基金supported by the Dean Fund of Jinan Military General Hospital in 2015,No.2015QN02
文摘At present, there is no effective treatment for the repair of the optic nerve after injury, or improvement of its microenvironment for regeneration. Intravitreally injected ciliary neurotrophic factor（CNTF） and olfactory ensheathing cells（OECs） promote the long-distance regrowth of severed optic nerve fibers after intracranial injury. Here, we examined the efficacy of these techniques alone and in combination, in a rat model of optic nerve injury. We injected condensed OEC suspension at the site of injury, or CNTF into the vitreous body, or both simultaneously. Retrograde tracing techniques showed that 4 weeks postoperatively, the number of surviving retinal ganglion cells and their axonal density in the optic nerve were greater in rats subjected to OEC injection only than in those receiving CNTF injection only. Furthermore, combined OEC ＋ CNTF injection achieved better results than either monotherapy. These findings confirm that OECs are better than CNTF at protecting injured neurons in the eye, but that combined OEC and CNTF therapy is notably more effective than either treatment alone.
文摘Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus-2 has become a worldwide public health crisis.Studies have demonstrated that diabetes and dyslipidaemia are common comorbidities and could be high-risk factors for severe COVID-19.Vitamin D,a group of fatsoluble compounds responsible for intestinal absorption of calcium,magnesium,and phosphate,has been widely used as a dietary supplement for the prevention and treatment of numerous diseases,including infectious and non-infectious diseases,due to its high cost-effectiveness;safety;tolerability;and anti-thrombotic,anti-inflammatory,antiviral,and immunomodulatory properties.In this letter to the editor,we mainly discuss the potential role of vitamin D in patients with diabetes,dyslipidaemia,and COVID-19.
基金Supported by Scientific Research Foundation of Shanghai Municipal Health Commission of Changning District,No.20234Y038.
文摘In this editorial,we discuss the recent article by Zhao et al published in the World Journal of Diabetes,which highlights the importance of recognizing the risk indicators associated with diabetes mellitus(DM).Given the severe implications of healthcare-associated infections(HAIs)in hospitalized individuals-such as heightened mortality rates,prolonged hospitalizations,and increased costs-we focus on elucidating the connection between DM and nosocomial infections.Diabetic patients are susceptible to pathogenic bacterial invasion and subsequent infection,with some already harboring co-infections upon admission.Notably,DM is an important risk factor for nosocomial urinary tract infections and surgical site infections,which may indirectly affect the occurrence of nosocomial bloodstream infections,especially in patients with DM with poor glycemic control.Although evidence regarding the impact of DM on healthcare-associated pneumonias remains inconclusive,attention to this potential association is warranted.Hospitalized patients with DM should prioritize meticulous blood glucose management,adherence to standard operating procedures,hand hygiene practices,environmental disinfection,and rational use of drugs during hospitalization.Further studies are imperative to explore the main risk factors of HAIs in patients with DM,enabling the development of preventative measures and mitigating the occurrence of HAIs in these patients.
基金Supported by Major Construction Program of Military Key Disciplines during the 13^(th)Five-Year Plan Period,No.2020SZ21-15。
文摘The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2 has brought serious challenges for the medical field.Patients with COVID-19 usually have respiratory symptoms.However,liver dysfunction is not an uncommon presentation.Additionally,the degree of liver dysfunction is associated with the severity and prognosis of COVID-19.Prevention,diagnosis,and treatment of malnutrition should be routinely recommended in the management of patients with COVID-19,especially in those with liver dysfunction.Recently,a large number of studies have reported that nutrition therapy measures,including natural dietary supplements,vitamins,minerals and trace elements,and probiotics,might have potential hepatoprotective effects against COVID-19-related liver dysfunction via their antioxidant,antiviral,anti-inflammatory,and positive immunomodulatory effects.This review mainly focuses on the possible relationship between COVID-19 and liver dysfunction,nutritional and metabolic characteristics,nutritional status assessment,and nutrition therapy to provide a reference for the nutritionists while making evidence-based nutritional decisions during the COVID-19 pandemic.
文摘The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)is spreading at an alarming rate,and it has created an unprecedented health emergency threatening tens of millions of people worldwide.Previous studies have indicated that SARS-CoV-2 ribonucleic acid could be detected in the feces of patients even after smearnegative respiratory samples.However,demonstration of confirmed fecal-oral transmission has been difficult.Clinical studies have shown an incidence rate of gastrointestinal(GI)symptoms ranging from 2%to 79.1%in patients with COVID-19.They may precede or accompany respiratory symptoms.The most common GI symptoms included nausea,diarrhea,and abdominal pain.In addition,some patients also had liver injury,pancreatic damage,and even acute mesenteric ischemia/thrombosis.Although the incidence rates reported in different centers were quite different,the digestive system was the clinical component of the COVID-19 section.Studies have shown that angiotensinconverting enzyme 2,the receptor of SARS-CoV-2,was not only expressed in the lungs,but also in the upper esophagus,small intestine,liver,and colon.The possible mechanism of GI symptoms in COVID-19 patients may include direct viral invasion into target cells,dysregulation of angiotensin-converting enzyme 2,immune-mediated tissue injury,and gut dysbiosis caused by microbiota.Additionally,numerous experiences,guidelines,recommendations,and position statements were published or released by different organizations and societies worldwide to optimize the management practice of outpatients,inpatients,and endoscopy in the era of COVID-19.In this review,based on our previous work and relevant literature,we mainly discuss potential fecal-oral transmission,GI manifestations,abdominal imaging findings,relevant pathophysiological mechanisms,and infection control and prevention measures in the time of COVID-19.
文摘Dear Editor,An outbreak of an unknown infectious pneumonia has recently occurred in Wuhan,China.1 The pathogen of the disease was quickly identified as a novel coronavirus(SARS-CoV-2,severe acute respiratory syndrome coronavirus 2),and the disease was named coronavirus disease-19(COVID-19).2 The virus has so far caused 78,959 confirmed cases and 2791 deaths in China according to the reports of government.COVID-19 has been spreading in many countries such as Japan,Korea,Singapore,Iran,and Italia.
基金supported by the National Natural Science Foundation of China(No.82173589&No.82173590)the National Key Research and Development Program of China(2022YFC2503605)+1 种基金the Capital’s Funds for Health Improvement and Research(2022-2G-5031),the Beijing Nova Program(No.20220484020)the Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province(2-6-2020E10004).
文摘OBJECTIVE To evaluate the associations of lipid indicators and mortality in Beijing Elderly Comprehensive Health Cohort Study.METHODS A prospective cohort was conducted based on Beijing Elderly Comprehensive Health Cohort Study with 4499 com-munity older adults.After the baseline survey,the last follow-up was March 31,2021 with an average 8.13 years of follow-up.Cox proportional hazard model was used to estimate the hazard ratios(HR)with 95%CI for cardiovascular disease(CVD)death and all-cause death in associations with baseline lipid indicators.RESULTS A total of 4499 participants were recruited,and the mean levels of uric acid,body mass index,systolic blood pres-sure,diastolic blood pressure,fasting plasma glucose,total cholesterol(TC),triglyceride,and low-density lipoprotein cholesterol(LDL-C)showed an upward trend with the increasing remnant cholesterol(RC)quarters(Ptrend<0.05),while the downward tr-end was found in high-density lipoprotein cholesterol(HDL-C).During the total 36,596 person-years follow-up,the CVD mortal-ity and all-cause mortality during an average 8.13 years of follow-up was 3.87%(95%CI:3.30%-4.43%)and 14.83%(95%CI:13.79%-15.86%)with 174 CVD death participants and 667 all-cause death participants.After adjusting for confounders,the higher level of TC(HR=0.854,95%CI:0.730-0.997),LDL-C(HR=0.817,95%CI:0.680-0.982)and HDL-C(HR=0.443,95%CI:0.271-0.724)were associated with lower risk of CVD death,and the higher level of HDL-C(HR=0.637,95%CI:0.501-0.810)were associated with lower risk of all-cause death.The higher level of RC(HR=1.276,95%CI:1.010-1.613)increase the risk of CVD death.Com-pared with the normal lipid group,TC≥6.20 mmol/L group and LDL-C≥4.10 mmol/L group were no longer associated with lower risk of CVD death,while RC≥0.80 mmol/L group was still associated with higher risk of CVD death.In normal lipid gr-oup,the higher levels of TC,LDL-C and HDL-C were related with lower CVD death.CONCLUSIONS In community older adults,higher levels of TC and HDL-C were associated with lower CVD mortality in normal lipid reference range.Higher RC was associated with higher CVD mortality,which may be a better lipid indicator for es-timating the CVD death risk in older adults.
文摘We employed a multiplex polymerase chain reaction （PCR） coupled with capillary electrophoresis （mPCR-CE） targeting six Clostridium difficile genes, including tPi, tcdA, tcdB, cdtA, cdtB, and a deletion in tcdC for simultaneous detection and characterization of toxigenic C. difficile directly from fecal specimens. The mPCR-CE had a limit of detection of 10 colony-forming units per reaction with no cross-reactions with other related bacterial genes. Clinical validation was performed on 354 consecutively collected stool specimens from patients with suspected C. difficile infection and 45 isolates. The results were compared with a reference standard combined with BD MAX Cdiff, real-time cell analysis assay （RTCA）, and mPCR-CE. The toxigenic C. difficile species were detected in 36 isolates and 45 stool specimens by the mPCR-CE, which provided a positive rate of 20.3% （81/399）. The mPCR-CE had a specificity of 97,2% and a sensitivity of 96.0%, which was higher than RTCA （χ^2 = 5.67, P = 0.017） but lower than BD MAX Cdiff （P = 0.245）. Among the 45 strains, 44 （97.8%） were determined as non- ribotype 027 by the mPCR-CE, which was fully agreed with PCR ribotyping. Even though ribotypes 017 （n = 8, 17.8%）, 001 （n = 6, 13.3%）, and 012 （n = 7, 15.6%） were predominant in this region, ribotype 027 was an important genotype monitored routinely. The mPCR-CE provided an alternative diagnosis tool for the simultaneous detection of toxigenic C. difficile in stool and potentially differentiated between RT027 and non-RT027.
基金Supported by Grants-in-Aids for Young Scientists(B)from the Japan Society for the Promotion of Science,No.17K15785Fujita Health University Grant(2018)
文摘BACKGROUND Inflammatory bowel disease,such as Crohn’s disease and ulcerative colitis,is characterized by chronic intestinal inflammation leading to intestinal mucosal damage.Inflammatory bowel disease causes dysregulation of mucosal T cell responses,especially the responses of CD4+T cells.Previously,we demonstrated that indoleamine-2,3-dioxygenase plays an immunosuppressive role in 2,4,6-trinitrobenzene sulfate(TNBS)-induced colitis.Although indoleamine-2,3-dioxygenase exerts immunosuppressive effects by altering the local concentration of tryptophan(Trp)and immunomodulatory Trp metabolites,the specific changes in immune regulation during colitis caused by Trp metabolites and its related enzymes remain unclear.AIM To investigate role of kynurenine 3-monooxygenase(KMO)in TNBS-induced colitis and involvement of Trp metabolites in maintenance of intestinal homeostasis.METHODS Colitis was induced in eight-week-old male KMO+/+or KMO−/−mice of C57BL/6N background using TNBS.Three days later,the colon was used for hematoxylin-eosin staining for histological grading,immunohistochemical or immunofluorescence staining for KMO,cytokines,and immune cells.Inflammatory and anti-inflammatory cytokines were measured using quantitative RT-PCR,and kynurenine(Kyn)pathway metabolites were measured by high-performance liquid chromatography.The cell proportions of colonic lamina propria and mesenteric lymph nodes were analyzed by flow cytometry.RESULTS KMO expression levels in the colonic mononuclear phagocytes,including dendritic cells and macrophages increased upon TNBS induction.Notably,KMO deficiency reduced TNBS-induced colitis,resulting in an increased frequency of Foxp3+regulatory T cells and increased mRNA and protein levels of antiinflammatory cytokines,including transforming growth factor-βand interleukin-10.CONCLUSION Absence of KMO reduced TNBS-induced colitis via generation of Foxp3+regulatory T cells by producing Kyn.Thus,Kyn may play a therapeutic role in colon protection during colitis.
