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Plasmid vector based generation of transgenic mesenchymal stem cells with stable expression of reporter gene in caprine 被引量:1
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作者 Manish Kumar Renu Singh +9 位作者 Kuldeep Kumar Pranjali Agarwal Puspendra Saswat Mahapatra Abhisek Kumar Saxena Ajay Kumar Subrata Kumar Bhanja Dhruba Malakar Rajendra Singh Bikas C. Das Sadhan Bag 《Stem Cell Discovery》 2013年第4期226-239,共14页
The production of cells capable of expressing gene(s) of interest is important for a variety of applications in biomedicine and biotechnology, including gene therapy and a novel method of stem cell therapy in the vari... The production of cells capable of expressing gene(s) of interest is important for a variety of applications in biomedicine and biotechnology, including gene therapy and a novel method of stem cell therapy in the various diseases. Achieving high levels of transgene expression for the longer period of time, without adversely affecting cell viability and differentiation capacity of the cells, is crucial. In the present study, we investigated the efficiency of plasmid vector for the production of transgenic cMSCs and examined any functional change of cells after transfection. To do so first we have collected bone marrows from the adult goats and cultured them for isolation of mesenchymal stem cells (cBM-MSCs). These cells were characterized using MSC specific markers including differentiation into osteocytes and adipocytes. Transfection with plasmid vector did not adversely affect cBM-MSCs morphology, viability or differentiation potential, and transgene expression levels were unaffected beyond passage 12th. The results indicated that we have been able to generate transgenic caprine MSC (tcBM-MSC) and transfection of cBM-MSCs using plasmid vector resulted in very high and stable transfection efficiency. This finding may have considerable significance in improving the efficacy of MSC-based therapies and their tracking in animal model. 展开更多
关键词 TRANSGENIC MSC CAPRINE PLASMID Vector Characterisation In VITRO DIFFERENTIATION
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Sperm dosage and site of insemination in relation to fertility in bovines
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作者 Tushar Kumar Mohanty Shabir Ahmad Lone +8 位作者 Kumaresan A Bhakat M Kumar R Rubina K Baithalu Ranjana Sinha Adil Rasool Paray Hanuman P Yadav Sangram K Sahu Ashok K Mohanty 《Asian pacific Journal of Reproduction》 2018年第1期1-5,共5页
Low sperm numbers in artificial insemination (AI)-doses are being used widely to make the best use of high genetic value bulls as well as sex-sorted semen. Sperm concentration needed for AI to obtain reasonable fertil... Low sperm numbers in artificial insemination (AI)-doses are being used widely to make the best use of high genetic value bulls as well as sex-sorted semen. Sperm concentration needed for AI to obtain reasonable fertility, taking genetic value of bull and numerous others components into consideration is one of the essential constituents for successful AI breeding program. However, low sperm concentrations in AI-doses lead to reducing post-thaw viability. The reduction in viability of low sperm doses may be affected by fresh semen volume, sperm number and seminal plasma level at final dilution. Reduction in quality and fertility of low sperm doses is one of the limitations for their use in successful AI programme. Sperm number per AI required to achieve optimum fertility is one of the main crucial things to AI industry, and numerous efforts have been made in this regard. Due to great variability among bulls, sperm number per AI could be a limiting factor in achieving acceptable fertility values. Fertility of low sperm doses may vary among bulls, and non-return rates (NRRs) with low sperm doses may be determined by fertility level of bull. On the basis of individual bulls, sperm numbers in AI doses needed to be adjusted to reduce the variations in NRRs among bulls. Utilizing high fertile bulls for low sperm doses with acceptable non-return rates (NRRs) may be a way to cover a large number of bovines under AI in countries like India. Deposition site within the uterine horn may alter non return rates following inseminations with low sperm doses. Following deep-uterine inseminations, acceptable pregnancies may be achieved with low sperm doses and even if ovulation side is unknown. 展开更多
关键词 SPERM number Deposition SITE FERTILITY
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Epidemiology Survey of Porcine Parvovirus and Porcine Circovirus Type 2 in Sichuan Province
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作者 XU Jun GUO Wan-zhu +2 位作者 CHEN Yang XU Zhi-wen WANG Xiao-yu 《Animal Husbandry and Feed Science》 CAS 2012年第3期130-132,共3页
[ Objective] The study aimed to analyze the prevalence of Porcine Parvovirus (PPV) and Porcine Circovirus Type 2 ( PCV2 ) and the mixed infection in Sichuan Province to lay the foundation for further predicting th... [ Objective] The study aimed to analyze the prevalence of Porcine Parvovirus (PPV) and Porcine Circovirus Type 2 ( PCV2 ) and the mixed infection in Sichuan Province to lay the foundation for further predicting the tendency of the plague and formulating appropriate prevention and control strategies. [ Method] Two hundred and seventy -three samples were collected from 21 large pig farms in Sichuan province, and epidemiology of PPV and PCV2 were investigated by PCR detecting. [ Result] The positive rate of PPV was 17.22% (47/273), and positive rate of pig farms was 38.1% (8/21), meanwhile it also displayed the feature that infection rate of boar was higher than that of piglets; The positive rate of PCV2 was 52.38% (143/273), and positive rate of pig farms was 85.7% (18/21), and it showed the trend that the infection rate of PCV2 was rising with the growth of the age. The co-infection rate of PPV and PCV2 was 10.62% (29/273), and co-infection rate of pig farms was 28.7% (6/21), which mainly concentrated in the sow and nursery piglets. Only 14.3% (3/21) pig farms was epidemiologically negative of PPV and PCV2. [ Conclusion] PPV and PCV2 and co-infection was widely popular in Sichuan province, and it did more serious harm to the pig-raising industry. 展开更多
关键词 Porcine parvovirus Porcine circovirus 2 EPIDEMIOLOGY
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Combined Effect of Garlic Juice and Sa-Tay Marinade on Quality Changes of Oyster Meat during Chilled Storage
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作者 Bunyarat Bunruk Sunisa Siripongvutikorn Pornpong Sutthirak 《Food and Nutrition Sciences》 2013年第6期690-700,共11页
Traditionally, meat has been marinated to improve yield, flavor, tenderness, and may increase product shelf life. Sa-tay is a popular dish in Thai restaurant. Physical, chemical, microbiological and sensory qualities ... Traditionally, meat has been marinated to improve yield, flavor, tenderness, and may increase product shelf life. Sa-tay is a popular dish in Thai restaurant. Physical, chemical, microbiological and sensory qualities after the oyster meat treated with garlic 0, 2 ml of garlic juice then marinated with Sa-tay condiment (8%, wt/wt) were monitored during chilled storage, 4℃ ± 2℃. pH and glycogen content of all treatments decreased while TVB, lactic acid content, ammonia content and K-value increased as storage time. A TBARS, rancidity indicator, of the control was higher compared with other treatments. Mesophilic and lactic acid bacteria of all treatments particularly the oyster treated with the juice increased as storage time increased. However, psychrophilic bacteria, coliforms, fecal coliforms, Escherichia coli, Staphylococcus aureus, Salmonella spp. and Vibrio spp. were low throughout the storage. Consumer acceptability scores of all treatments were higher than borderline (>5) at the end of the storage, 12 days. 展开更多
关键词 OYSTER MEAT GARLIC JUICE Sa-Tay Marinated
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Histopathology of Porcine kobuvirus in Chinese piglets 被引量:11
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作者 Fan Yang Xiaowan Liu +4 位作者 Yuancheng Zhou Wenting Lyu Siyao Xu Zhiwen Xu Ling Zhu 《Virologica Sinica》 SCIE CAS CSCD 2015年第5期396-399,共4页
Dear Editor,Kobuvirus,classified as a new genus within the Picornaviridae family in 1999,is a non-enveloped virus with single-stranded,positive-sense genomic RNA(Pringle,1999).This genus contains 3 species currently r... Dear Editor,Kobuvirus,classified as a new genus within the Picornaviridae family in 1999,is a non-enveloped virus with single-stranded,positive-sense genomic RNA(Pringle,1999).This genus contains 3 species currently recoganized:Aichivirus A(Ai V),Aichivirus B(BKo V),and Aichivirus C(PKo V).PKo V was first detected in 展开更多
关键词 Pringle GENOMIC currently FECAL DIARRHEA classifie
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Epidemiological study and variation analysis of the porcine kobuvirus 3D gene in Sichuan province, China 被引量:5
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作者 Pengjuan Liu Ping Li +6 位作者 Wenting Lyu Xinqiong Li Song Li Fan Yang Jianbo Huang Zhiwen Xu Ling Zhu 《Virologica Sinica》 SCIE CAS CSCD 2015年第6期460-463,共4页
Dear Editor,As a member of the Kobuvirus genus in the Picornaviridae family,porcine kobuvirus is prevalent worldwide in pigs with or without diarrhea.Picornaviruses are classified into 12 genera(Aphthovirus,Cardioviru... Dear Editor,As a member of the Kobuvirus genus in the Picornaviridae family,porcine kobuvirus is prevalent worldwide in pigs with or without diarrhea.Picornaviruses are classified into 12 genera(Aphthovirus,Cardiovirus,Enterovirus,Hepatovirus,Kobuvirus,Parechovirus,Sapelovirus,Avihepatovirus,Erbovirus,Senecavirus, 展开更多
关键词 PORCINE DIARRHEA GENERA ENTEROVIRUS prevalent classified isolates prevalence NEIGHBOR SUBGROUP
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The Distribution of Different Clades of Seneca Valley Viruses in Guangdong Province,China 被引量:7
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作者 Pan Chen Fan Yang +6 位作者 Weijun Cao Huanan Liu Keshan Zhang Xiangtao Liu Zhiwen Xu Zixiang Zhu Haixue Zheng 《Virologica Sinica》 SCIE CAS CSCD 2018年第5期394-401,共8页
Seneca Valley virus (SVV), a newly determined etiological agent of vesicular disease in swine, causes porcine idiopathic disease and occasional acute death in piglets. Recently, an increased number of SVV infection ca... Seneca Valley virus (SVV), a newly determined etiological agent of vesicular disease in swine, causes porcine idiopathic disease and occasional acute death in piglets. Recently, an increased number of SVV infection cases have been reported in the United States (US) and China, resulting in significant economic losses to the swine industry. The first identification of SVV in China was reported in Guangdong Province, a major swine producing province. The cases of SVV were continuously reported in Guangdong in 2015 and 2016. However, the spread of SVV in Guangdong in 2017 remains unknown.In this study, we determined two new SVV strains, CH-GD-2017-1 and CH-GD-2017-2, from Guangdong. The genetic analysis suggested that the two Guangdong strains showed different characteristics to previous Guangdong strains. They showed lower nucleotide similarity with strains isolated in 2015 and 2016, and were more similar to the US strains.Phylogenetic analyses indicated that the new strains were clustered in a different clade with previous Guangdong strains.We found 28 mutated amino acids in the new strains, compared with the first Guangdong strain, SVV CH-01-2015. In the geographic analysis, we found that the US and China reported more SVV cases than other countries, and most of the SVV cases were reported in east and central China—of which, Guangdong Province is one of the major epidemic regions. In conclusion, our findings indicate that SVV continued to spread in Guangdong Province in 2017, and two different clades of SVVs have emerged in this region. 展开更多
关键词 SENECA VALLEY virus (SVV) GENOMIC sequence PHYLOGENETIC tree EPIDEMIOLOGICAL analysis
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Evaluation of a Rapid Immunochromatographic Middle East Respiratory Syndrome Coronavirus Antigen Detection Assay
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作者 Susanna Kar-Pui Lau Kenneth Sze-Ming Li +5 位作者 Jade Lee-Lee Teng Sunitha Joseph Hayes Kam-Hei Luk Joshua Fung Ulrich Wernery Patrick Chiu-Yat Woo 《Infectious Microbes & Diseases》 2022年第4期175-177,共3页
Middle East respiratory syndrome coronavirus(MERS-CoV)infection in humans has a high mortality of>30%.Dromedaries are the reservoir of MERS-CoV and the main source of human infections.However,MERS-CoV infections in... Middle East respiratory syndrome coronavirus(MERS-CoV)infection in humans has a high mortality of>30%.Dromedaries are the reservoir of MERS-CoV and the main source of human infections.However,MERS-CoV infections in dromedaries are usually subclinical.Rapid diagnosis of MERS-CoV infection in these animals is important in preventing camel-to-human transmission of the virus.The possible cross-reactivity of a previously reported rapid nucleocapsid protein-based antigen detection assay for MERS-CoV was examined with different CoVs,including Tylonycteris bat CoV HKU4,dromedary camel CoV UAE-HKU23,human CoV-229E,human CoV-OC43,severe acute respiratory syndrome CoV-2 and rabbit CoV HKU14,where none of them showed false-positive results.The assay was further validated using quantitative real-time reverse transcription-polymerase chain reaction-confirmed MERS-CoV-positive and MERS-CoV-negative dromedary nasal samples collected in Dubai,the United Arab Emirates,which showed that the rapid antigen detection assay has a specificity of 100%and sensitivity of 91.7%. 展开更多
关键词 MERS-CoV rapid antigen detection assay dromedary camels
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