28 results on '"Chaudhary JK"'
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2. Forecasting of milk productionof crossbred dairy cattle by AutoregressiveIntegrated Moving Average (ARIMA) model
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Sharma, Rohit, primary, Chaudhary, JK, additional, Kumar, Sanjeev, additional, Rewar, Ranjit, additional, and Kumar, Sandeep, additional
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- 2022
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3. A study on pork sausage incorporated with olive oil, dried apple pulp powder and pomegranate seed powder
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Debnath, Keshab, primary, Hazarika, Pragati, additional, Das, Hemen, additional, Chaudhary, JK, additional, Das, Anannya, additional, Kumar, Sandeep, additional, Rahaman, Saifur, additional, and Nath, Santanu, additional
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- 2020
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4. Response of nutrient content and quality of summer forage pearlmillet (Pennisetum glaucum L.) on sowing date and nitrogen level
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Chaudhary, JK, primary, Patel, AG, additional, Gohil, NB, additional, and Chaudhary, DG, additional
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- 2020
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5. A longitudinal study on the impact of species and age of animals on milk production in dairy animals
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Chaudhary, JK, primary, Verma, MR, additional, and Kshandakar, Shashank, additional
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- 2020
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6. Temporal effect of flaxseed oil in boar's diet on semen quality, antioxidant status and in-vivo fertility under hot humid sub-tropical condition.
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Singh M, Mollier RT, Kumar D, Katiyar R, Chamuah JK, Kumar S, Chaudhary JK, Deori S, Kalita H, and Mishra VK
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- Animals, Male, Swine, Sperm Motility drug effects, Hot Temperature, Dietary Supplements, Spermatozoa drug effects, Spermatozoa metabolism, Animal Feed analysis, Semen drug effects, Semen metabolism, Tropical Climate, Antioxidants metabolism, Antioxidants pharmacology, Linseed Oil pharmacology, Semen Analysis, Fertility drug effects, Humidity
- Abstract
The present study investigates the temporal effects of flaxseed supplementation on boar semen quality, antioxidant status, and in-vivo fertility under high-temperature humidity index (THI) conditions in a sub-tropical climate. Twelve Hampshire crossbreed boars were randomly assigned to control and treatment groups, with the treatment group receiving flaxseed oil supplementation. Semen samples were collected and analyzed for semen quality parameters, sperm kinematics, and antioxidant status. Fertility outcomes were assessed through in-vivo mating trials. Flaxseed supplementation resulted in time dependent significant improvements in semen volume, sperm concentration, total and progressive sperm motility, sperm quality parameters, and antioxidant status. Fertility outcomes, including farrowing rates and litter sizes, were also enhanced in the flaxseed-supplemented group. These findings highlight the potential of flaxseed supplementation to improve boar fertility under high ambient stress conditions, with implications for optimizing reproductive performance in swine production systems., (© 2024. The Author(s).)
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- 2024
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7. Isolation and genetic characterization of parvoviruses from domestic cats reveals emergence of CPV-2c in India: A first report.
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Behera SK, Lalhriatchhungi MH, Chakraborty P, Roychoudhury P, Maibam L, Behera P, Chaudhary JK, Prasad H, Rajesh JB, Sarma K, G E C, Shah NP, Maibam WK, Jadhav RK, and Lalhmangaihzuali
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- Animals, Cats, India epidemiology, Parvoviridae Infections veterinary, Parvoviridae Infections virology, Parvoviridae Infections epidemiology, Parvovirus, Canine genetics, Parvovirus, Canine isolation & purification, Parvovirus, Canine classification, Phylogeny, Feline Panleukopenia Virus genetics, Feline Panleukopenia Virus isolation & purification, Cat Diseases virology, Cat Diseases epidemiology
- Abstract
The objective of the present study was to isolate and characterize the VP2 gene of parvoviruses from domestic cats in India. For that, 38 fecal samples were screened by PCR with 36.84% positivity. Sequence analysis of those isolates showed canine parvovirus type-2c (CPV-2c) as the predominant variant, followed by feline panleukopenia virus (FPV) and 2a. Phylogenetic analysis of the CPV-2c sequences revealed clustering with Singaporean, South Korean, Mongolian and Bangladeshi dog 2c sequences. Phylogenetic analysis of the 2a isolate (MZC 2) was found to be clustered with Indian, Thai and Singaporean dog 2a isolates. Similarly, all the four FPV sequences were ancestrally related to Indian dog and cat FPV sequences hinting towards interspecies transmission between dogs and cats. Both synonymous and non-synonymous mutations were evident in CPV-2c, 2a and FPV sequences indicative of active evolution. In cell culture medium, CPV-2 showed cytopathogenic effects at the third passage level. In conclusion, the study provided the first report of CPV-2c in cats from India, which demands for extensive epidemiological surveillance to monitor interspecies spread and to shed more light on viral phylogenomics, their distribution in the country and in the Southeast Asian region and usage of current vaccines.
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- 2024
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8. Temporal disposition of pelvic girdle, vagina and vulva in relation to urovagina in cycling and pregnant-postpartum cows.
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Sood P, Vatasyan S, and Chaudhary JK
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- Pregnancy, Female, Cattle, Animals, Vagina, Estrus physiology, Vulva, Parity, Progesterone, Postpartum Period physiology
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Urovagina (UV) is less studied in cows. The vaginal contents, constrictor vestibule muscle activity, circulating progesterone, pelvic girdle, vagina and vulva angles were compared on Days 0 and 14 within and between UV (UV group; n = 36) and normal (N group; n = 36) cows. The oestrous duration was compared among the groups. Parameters for various UV severities were also compared. Another set of pregnant-postpartum cows (P-PP group; n = 31) underwent monthly evaluations for UV and the angles from the third month of pregnancy until the second month postpartum. The effect of age, parity and body condition score on UV severities on Day 0, and parity on angles in the P-PP group was evaluated. Different variables were correlated in different groups. The UV group was repeat breeder, exhibited prolonged oestrus and reduced progesterone on Day 14. The latter increased with UV severity on Day 0. On Day 14, severe form of UV was more prevalent. The UV severity increased with parity. In the UV group, a cranioventral pelvic girdle on Day 0 became more cranioventral on Day 14 and was correlated with the vagina moving from a caudodorsal position on Day 0 to a cranioventral position on Day 14. In the P-PP group, the pelvic girdle and vagina remained caudodorsal and UV was undetectable throughout the study. Vagina and vulva displayed a parity-by-month interaction in the P-PP group. To summarize, the UV characteristics were influenced by the oestrous cycle stage, pelvic girdle angles, and parity., (© 2024 Wiley-VCH GmbH. Published by John Wiley & Sons Ltd.)
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- 2024
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9. Mesenchymal stem cells (MSCs) from the mouse bone marrow show differential expression of interferon regulatory factors IRF-1 and IRF-2.
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Chaudhary JK, Ahamad N, and Rath PC
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- Animals, Mice, Bone Marrow Cells, Cytoplasm, Bone Marrow, Interferon Regulatory Factors genetics, Mesenchymal Stem Cells
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Background: Interferon regulatory factors (IRF-1 and IRF-2) are transcription factors widely implicated in various cellular processes, including regulation of inflammatory responses to pathogens, cell proliferation, oncogenesis, differentiation, autophagy, and apoptosis., Methods: We have studied the expression of IRF-1, IRF-2 mRNAs by RT-PCR, cellular localization of the proteins by immunofluorescence, and expression of mRNAs of genes regulated by IRF-1, IRF-2 by RT-PCR in mouse bone marrow cells (BMCs) and mesenchymal stem cells (MSCs)., Results: Higher level of IRF-1 mRNA was observed in BMCs and MSCs compared to that of IRF-2. Similarly, differential expression of IRF-1 and IRF-2 proteins was observed in BMCs and MSCs. IRF-1 was predominantly localized in the cytoplasm, whereas IRF-2 was localized in the nuclei of BMCs. MSCs showed nucleo-cytoplasmic distribution of IRF-1 and nuclear localization of IRF-2. Constitutive expression of IRF-1 and IRF-2 target genes: monocyte chemoattractant protein-1 (MCP-1), vascular cell adhesion molecule-1 (VCAM-1), cyclooxygenase-2 (COX-2), matrix metalloproteinase-9 (MMP-9), and caspase-1 was observed in both BMCs and MSCs. MSCs showed constitutive expression of the pluripotency-associated factors, Oct3/4 and Sox-2. Lipopolysaccharide (LPS)-treatment of MSCs induced prominent cellular localization of IRF-1 and IRF-2., Conclusions: Our results suggest that IRF-1 and IRF-2 exhibit differential expression of their mRNAs and subcellular localization of the proteins in BMCs and MSCs. These cells also show differential levels of constitutive expression of IRF-1 and IRF-2 target genes. This may regulate immune-responsive properties of BMCs and MSCs through IRF-1, IRF-2-dependent gene expression and protein-protein interaction. Regulating IRF-1 and IRF-2 may be helpful for immunomodulatory functions of MSCs for cell therapy and regenerative medicine., (© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
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- 2024
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10. Indigenous chicken production system in different agro-ecology of Indian Himalayan Region: implication on food and economic security.
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Singh M, Patton RN, Mollier RT, Pongener N, Yadav R, Singh V, Katiyar R, Singh GD, Deori S, Doley S, Chaudhary JK, Babu S, Kalita H, and Mishra VK
- Abstract
The indigenous chicken production system (ICPS) has several use values and ecosystem services. In the last few years, ICPS has been recognized for its possible contribution to household food security, income generation, wildlife protection, and bettering the women's lives. This study aimed to collect, for the first time, comprehensive information about ICPS in three different agro-ecologies (tropical, sub-tropical, and sub-temperate) of the Indian Himalayan Region (IHR) and its role in food and economic security of traditional communities. In this study region, ICPS is semi-extensive, providing homegrown feed and temporary night shelter. In sub-temperate agro-ecology, females owned non-significant ( p = 0.170) more indigenous chicken flocks than males. Households in sub-temperate agro-ecologies had significantly ( p ≤ 0.001) larger flock sizes and tropical livestock units (chicken-TLU). However, the livestock diversity index (LDI) was significantly higher ( p ≤ 0.001) in tropical and subtropical agro-ecology. The households in the sub-temperate region highly ( p ≤ 0.001) valued indigenous chicken because of its survivability and adaptability. In absolute numbers significant ( p ≤ 0.001) higher numbers of adult birds died in past 1 year in sub-temperate agro-ecology. The mortality rate of adult birds in sub-temperate agro-ecology was 9%, and it was 14 and 15% in tropical and sub-tropical agro-ecologies, respectively. In sub-temperate agro-ecology, larger flock size translated into significantly higher ( p ≤ 0.001) egg production and subsequently a significant ( p ≤ 0.001) higher egg consumption per household per month. In sub-temperate agro-ecology, households' dietary diversity score was significantly ( p ≤ 0.001) higher. Similarly, the average annual income from ICPS was significantly higher ( p ≤ 0.001) in sub-temperate agro-ecology and accounted for 18% of household income. ICPS' marketing chain was relatively short in the sub-temperate region. In all agro-ecologies, indigenous chicken and egg demand was significantly higher ( p ≤ 0.001) in the winter. ICPS litter is used as farmyard manure, enhancing ecological resilience. In all agro-ecologies, the three most frequently cited obstacles to extending the indigenous chicken production system are illnesses, predators, and a lack of chicks availability. ICPS contributes to food and nutritional security, economic stability, and ecological resilience in this hilly and fragile ecosystem. Even though the system is self-sustaining, management and health interventions can increase production and productivity., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Singh, Patton, Mollier, Pongener, Yadav, Singh, Katiyar, Singh, Deori, Doley, Chaudhary, Babu, Kalita and Mishra.)
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- 2023
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11. Linseed oil in boar's diet during high temperature humidity index (THI) period improves sperm quality characteristics, antioxidant status and fatty acid composition of sperm under hot humid sub-tropical climate.
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Singh M, Mollier RT, Pongener N, Bordoloi LJ, Kumar R, Chaudhary JK, Katiyar R, Khan MH, Rajkhowa DJ, and Mishra VK
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- Animals, Diet veterinary, Fatty Acids pharmacology, Humidity, Linseed Oil pharmacology, Male, Plant Breeding, Semen chemistry, Sperm Motility, Spermatozoa, Swine, Temperature, Tropical Climate, Antioxidants analysis, Antioxidants pharmacology, Semen Analysis veterinary
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Environmental heat stress in sub-tropical climates negatively impacts boar semen production and its quality. The present study aimed to examine the heat stress alleviating effects of dietary linseed oil on semen quality and antioxidant status of boar, in the summer and winter seasons in sub-tropical climate. Six Hampshire crossbreed boars were fed with 90 mL linseed oil (treatment) whereas six boars of the same breed were fed 90 mL vegetable oil (control) for sixteen weeks during both season. Sperm quality was assessed for motility, viability, abnormality, acrosomal integrity, and Hypo-osmotic swelling test (HOST). Sperm velocity attributes were assessed by computer-assisted semen analysis (CASA). Antioxidants (glutathione peroxidase; GPx, catalase; CAT, total antioxidant capacity; TAC and nitric oxide; NO) and lipid peroxidation (malondialdehyde; MDA) were measured in seminal plasma and serum. Gas chromatography-mass spectrometry (GC-MS) was used for the estimation of fatty acid composition of seminal plasma and spermatozoa. Feeding linseed oil to the boars significantly (p < 0.05) improved sperm quality at the fresh stage and after 72 h of liquid storage in both season. There was a significant (p < 0.01) effect of treatment and season on semen quality parameters. Significant boar (p < 0.05) effect was recorded on reaction time, semen volume, sperm abnormality, acrosomal integrity and HOST reactive sperm. There was a significant (p < 0.01) effect of treatment and season on the velocity attributes viz. VAP, VSL, VCL, ALH, BCF and STR%. Linseed oil supplementation significantly (p < 0.01) enhanced antioxidant and lowered MDA levels in serum as well as seminal plasma. The concentration of alpha-linolenic (ALA), arachidonic and docosahexaenoic (DHA) fatty acids were significantly (p < 0.01) increased in seminal plasma and sperm after linseed oil supplementation. In conclusion, linseed oil supplementation to boar during high THI months improved the semen quality parameters viz. semen volume, sperm concentration, and progressive motile sperm, along with enhanced antioxidant capacity., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2022
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12. Exploring the Immunomodulatory Aspect of Mesenchymal Stem Cells for Treatment of Severe Coronavirus Disease 19.
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Chaudhary JK, Saini D, Chaudhary PK, Maurya A, Verma GK, Gupta AK, Roshan R, Vats TK, Garg N, Yadav D, Kant N, Meena AK, and Mirza-Shariff AA
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- Adult, Cytokine Release Syndrome, Humans, Immunity, Immunomodulation, SARS-CoV-2, COVID-19 therapy, Mesenchymal Stem Cells metabolism
- Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is an enveloped, positive sense, single stranded RNA (+ssRNA) virus, belonging to the genus Betacoronavirus and family Coronaviridae. It is primarily transmitted from infected persons to healthy ones through inhalation of virus-laden respiratory droplets. After an average incubation period of 2-14 days, the majority of infected individuals remain asymptomatic and/or mildly symptomatic, whereas the remaining individuals manifest a myriad of clinical symptoms, including fever, sore throat, dry cough, fatigue, chest pain, and breathlessness. SARS-CoV-2 exploits the angiotensin converting enzyme 2 (ACE-2) receptor for cellular invasion, and lungs are amongst the most adversely affected organs in the body. Thereupon, immune responses are elicited, which may devolve into a cytokine storm characterized by enhanced secretion of multitude of inflammatory cytokines/chemokines and growth factors, such as interleukin (IL)-2, IL-6, IL-7, IL-8, IL-9, tumor necrosis factor alpha (TNF-α), granulocyte colony-stimulating factor (GCSF), basic fibroblast growth factor 2 (bFGF2), monocyte chemotactic protein-1 (MCP1), interferon-inducible protein 10 (IP10), macrophage inflammatory protein 1A (MIP1A), platelet-derived growth factor subunit B (PDGFB), and vascular endothelial factor (VEGF)-A. The systemic persistence of inflammatory molecules causes widespread histological injury, leading to functional deterioration of the infected organ(s). Although multiple treatment modalities with varying effectiveness are being employed, nevertheless, there is no curative COVID-19 therapy available to date. In this regard, one plausible supportive therapeutic modality may involve administration of mesenchymal stem cells (MSCs) and/or MSC-derived bioactive factors-based secretome to critically ill COVID-19 patients with the intention of accomplishing better clinical outcome owing to their empirically established beneficial effects. MSCs are well established adult stem cells (ASCs) with respect to their immunomodulatory, anti-inflammatory, anti-oxidative, anti-apoptotic, pro-angiogenic, and pro-regenerative properties. The immunomodulatory capabilities of MSCs are not constitutive but rather are highly dependent on a holistic niche. Following intravenous infusion, MSCs are known to undergo considerable histological trapping in the lungs and, therefore, become well positioned to directly engage with lung infiltrating immune cells, and thereby mitigate excessive inflammation and reverse/regenerate damaged alveolar epithelial cells and associated tissue post SARS-CoV-2 infection. Considering the myriad of abovementioned biologically beneficial properties and emerging translational insights, MSCs may be used as potential supportive therapy to counteract cytokine storms and reduce disease severity, thereby facilitating speedy recovery and health restoration.
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- 2022
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13. Menopausal Symptoms among Postmenopausal Women Visiting Outpatient Department of a Tertiary Care Centre: A Descriptive Cross-sectional Study.
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Subedi A, Shrestha J, and Chaudhary JK
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- Adult, Female, Humans, Middle Aged, Cross-Sectional Studies, Hot Flashes epidemiology, Menopause, Outpatients, Tertiary Care Centers, Medically Unexplained Symptoms, Postmenopause
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Introduction: Menopause is defined as the complete cessation of menstruation for consecutive 12 months which occurs due to the loss of follicular activity of ovaries from the late 40s to early 50s. The menopausal symptoms are often distressing but lack of awareness leads to failure in addressing the problem. This study aimed to find out the prevalence of menopausal symptoms among postmenopausal women visiting the outpatient department of a tertiary care centre., Methods: This descriptive cross-sectional study was done among postmenopausal women in the outpatient department of a tertiary care centre from 10 March 2021 to 10 March 2022 after taking ethical approval from the Institutional Review Committee (Reference number: MEMG/IRC/420/GA). Convenience sampling was done. Demographic data were collected using predesigned proforma and menopausal symptoms were evaluated using Rajanobritta Lakshan Mapak, the Nepali version of the menopausal rating scale. Point estimate and 95% Confidence Interval were calculated., Results: Among 424 postmenopausal women, menopausal symptom was found in 411 (96.48%) (94.73-98.23, 95% Confidence Interval). The mean age at menopause was 49±4.70 years. The most common symptom these women presented with was somatic symptoms seen in 382 (92.94%) women., Conclusions: The prevalence of menopausal symptoms is found to be higher than the other studies done in similar settings., Keywords: cross-sectional study; menopause; prevalence; somatic symptoms.
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- 2022
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14. Molecular docking, DFT analysis, and dynamics simulation of natural bioactive compounds targeting ACE2 and TMPRSS2 dual binding sites of spike protein of SARS CoV-2.
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Yadav R, Hasan S, Mahato S, Celik I, Mary YS, Kumar A, Dhamija P, Sharma A, Choudhary N, Chaudhary PK, Kushwah AS, and Chaudhary JK
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The scientific community is continuously working to discover drug candidates against potential targets of SARS-CoV-2, but effective treatment has not been discovered yet. The virus enters the host cell through molecular interaction with its enzymatic receptors i.e., ACE2 and TMPRSS2, which, if, synergistically blocked can lead to the development of novel drug candidates. In this study, 1503 natural bioactive compounds were screened by HTVS, followed by SP and XP docking using Schrodinger Maestro software. Bio-0357 (protozide) and Bio-597 (chrysin) were selected for dynamics simulation based on synergistic binding affinity on S1 (docking score -9.642 and -8.78 kcal/mol) and S2 domains (-5.83 and -5.3 kcal/mol), and the RMSD, RMSF and Rg analyses showed stable interaction. The DFT analysis showed that the adsorption of protozide/chrysin, the band gap of protozide/chrysin-F/G reduced significantly. From SERS, results, it can be concluded that QDs nanocluster will act as a sensor for the detection of drugs. The docking study showed Bio-0357 and Bio-0597 bind to both S1 and S2 domains through stable molecular interactions, which can lead to the discovery of new drug candidates to prevent the entry of SARS-CoV-2. This in-silico study may be helpful to researchers for further in vitro experimental validation and development of new therapy for COVID-19., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2021 Elsevier B.V. All rights reserved.)
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- 2021
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15. Insights into COVID-19 Vaccine Development Based on Immunogenic Structural Proteins of SARS-CoV-2, Host Immune Responses, and Herd Immunity.
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Chaudhary JK, Yadav R, Chaudhary PK, Maurya A, Kant N, Rugaie OA, Haokip HR, Yadav D, Roshan R, Prasad R, Chatrath A, Singh D, Jain N, and Dhamija P
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- Adaptive Immunity, COVID-19 epidemiology, COVID-19 prevention & control, COVID-19 Vaccines administration & dosage, COVID-19 Vaccines classification, Humans, Immunity, Innate, Vaccination, Vaccine Development, COVID-19 immunology, COVID-19 Vaccines immunology, Immunity, Herd, SARS-CoV-2 immunology, Viral Structural Proteins immunology
- Abstract
The first quarter of the 21st century has remarkably been characterized by a multitude of challenges confronting human society as a whole in terms of several outbreaks of infectious viral diseases, such as the 2003 severe acute respiratory syndrome (SARS), China; the 2009 influenza H1N1, Mexico; the 2012 Middle East respiratory syndrome (MERS), Saudi Arabia; and the ongoing coronavirus disease 19 (COVID-19), China. COVID-19, caused by SARS-CoV-2, reportedly broke out in December 2019, Wuhan, the capital of China's Hubei province, and continues unabated, leading to considerable devastation and death worldwide. The most common target organ of SARS-CoV-2 is the lungs, especially the bronchial and alveolar epithelial cells, culminating in acute respiratory distress syndrome (ARDS) in severe patients. Nevertheless, other tissues and organs are also known to be critically affected following infection, thereby complicating the overall aetiology and prognosis. Excluding H1N1, the SARS-CoV (also referred as SARS-CoV-1), MERS, and SARS-CoV-2 are collectively referred to as coronaviruses, and taxonomically placed under the realm Riboviria, order Nidovirales, suborder Cornidovirineae, family Coronaviridae, subfamily Orthocoronavirinae , genus Betacoronavirus , and subgenus Sarbecovirus . As of 23 September 2021, the ongoing SARS-CoV-2 pandemic has globally resulted in around 229 million and 4.7 million reported infections and deaths, respectively, apart from causing huge psychosomatic debilitation, academic loss, and deep economic recession. Such an unprecedented pandemic has compelled researchers, especially epidemiologists and immunologists, to search for SARS-CoV-2-associated potential immunogenic molecules to develop a vaccine as an immediate prophylactic measure. Amongst multiple structural and non-structural proteins, the homotrimeric spike (S) glycoprotein has been empirically found as the most suitable candidate for vaccine development owing to its immense immunogenic potential, which makes it capable of eliciting both humoral and cell-mediated immune responses. As a consequence, it has become possible to design appropriate, safe, and effective vaccines, apart from related therapeutic agents, to reduce both morbidity and mortality. As of 23 September 2021, four vaccines, namely, Comirnaty, COVID-19 vaccine Janssen, Spikevax, and Vaxzevria, have received the European Medicines Agency's (EMA) approval, and around thirty are under the phase three clinical trial with emergency authorization by the vaccine-developing country-specific National Regulatory Authority (NRA). In addition, 100-150 vaccines are under various phases of pre-clinical and clinical trials. The mainstay of global vaccination is to introduce herd immunity, which would protect the majority of the population, including immunocompromised individuals, from infection and disease. Here, we primarily discuss category-wise vaccine development, their respective advantages and disadvantages, associated efficiency and potential safety aspects, antigenicity of SARS-CoV-2 structural proteins and immune responses to them along with the emergence of SARS-CoV-2 VOC, and the urgent need of achieving herd immunity to contain the pandemic.
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- 2021
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16. Host Cell and SARS-CoV-2-Associated Molecular Structures and Factors as Potential Therapeutic Targets.
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Chaudhary JK, Yadav R, Chaudhary PK, Maurya A, Roshan R, Azam F, Mehta J, Handu S, Prasad R, Jain N, Pandey AK, and Dhamija P
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- Angiotensin-Converting Enzyme 2 chemistry, Angiotensin-Converting Enzyme 2 metabolism, Animals, Drug Delivery Systems, Furin chemistry, Furin metabolism, Humans, Lectins, C-Type chemistry, Lectins, C-Type metabolism, Molecular Structure, Neuropilins chemistry, Neuropilins metabolism, Peptidyl-Dipeptidase A chemistry, Peptidyl-Dipeptidase A metabolism, Protein Binding, Receptors, Virus chemistry, Receptors, Virus metabolism, Serine Endopeptidases chemistry, Serine Endopeptidases metabolism, Spike Glycoprotein, Coronavirus chemistry, Spike Glycoprotein, Coronavirus metabolism, Treatment Outcome, Viral Nonstructural Proteins chemistry, Viral Nonstructural Proteins metabolism, Virus Internalization, COVID-19 pathology, COVID-19 virology, Host Microbial Interactions, SARS-CoV-2 pathogenicity
- Abstract
Coronavirus disease 19 (COVID-19) is caused by an enveloped, positive-sense, single-stranded RNA virus, referred to as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which belongs to the realm Riboviria , order Nidovirales , family Coronaviridae , genus Betacoronavirus and the species Severe acute respiratory syndrome-related coronavirus . This viral disease is characterized by a myriad of varying symptoms, such as pyrexia, cough, hemoptysis, dyspnoea, diarrhea, muscle soreness, dysosmia, lymphopenia and dysgeusia amongst others. The virus mainly infects humans, various other mammals, avian species and some other companion livestock. SARS-CoV-2 cellular entry is primarily accomplished by molecular interaction between the virus's spike (S) protein and the host cell surface receptor, angiotensin-converting enzyme 2 (ACE2), although other host cell-associated receptors/factors, such as neuropilin 1 (NRP-1) and neuropilin 2 (NRP-2), C-type lectin receptors (CLRs), as well as proteases such as TMPRSS2 (transmembrane serine protease 2) and furin, might also play a crucial role in infection, tropism, pathogenesis and clinical outcome. Furthermore, several structural and non-structural proteins of the virus themselves are very critical in determining the clinical outcome following infection. Considering such critical role(s) of the abovementioned host cell receptors, associated proteases/factors and virus structural/non-structural proteins (NSPs), it may be quite prudent to therapeutically target them through a multipronged clinical regimen to combat the disease.
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- 2021
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17. Comparative morphometrical studies on the skull bones of barking deer (Muntiacus muntjak) and sambar deer (Rusa unicolor).
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Keneisenuo K, Choudhary OP, Kalita PC, Choudhary P, Kalita A, Doley PJ, and Chaudhary JK
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- Animals, Female, Male, Mandible, Maxilla, Skull, Deer, Muntjacs
- Abstract
The present study reports data on the skull bone morphometry of barking and sambar deer. The skulls of adult barking deer (n = 6) and sambar deer (n = 6) of either sex (n = 3 males and n = 3 females) were collected from the Aizawl Zoological Park, Aizawl, Mizoram, India, with official permission from the Government of Mizoram. Anatomically, barking and sambar deer's skulls were elongated, pyramid-like, dolichocephalic and consisted of thirty-two cranial and facial bones. The cranial bones were eleven (three single and four paired), comprising of occipital, sphenoid, ethmoid, frontal, interparietal, parietal and temporal. The facial bones were twenty-one (one single and ten were paired), consisting of the maxilla, premaxilla (incisive), palatine, pterygoid, nasal, lacrimal, zygomatic (malar), vomer, turbinates, mandible and hyoid. In the present study, altogether 41 different measurements were taken morphologically and 6 different indices were applied. The obtained morphometrical parameters were significantly (p < .01, p < .05) higher in males than females of both species. Species wise, all obtained parameters were higher in sambar deer than barking deer. The obtained 41 different skull parameters and 6 indices showed statistically significant differences (p < .01 and p < .05) between both sexes of barking and sambar deer; however, practically these differences were meagre. The present morphometrical study on the skull of both species can help the wildlife professionals and zoo veterinarians determine the sex of these animals and differentiate it from other domestic and wild small ruminants for solving veterolegal cases. This study's findings will also motivate and assist other comparative studies with various domestic and wild small ruminants., (© 2021 Wiley-VCH GmbH.)
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- 2021
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18. Role of Structural and Non-Structural Proteins and Therapeutic Targets of SARS-CoV-2 for COVID-19.
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Yadav R, Chaudhary JK, Jain N, Chaudhary PK, Khanra S, Dhamija P, Sharma A, Kumar A, and Handu S
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- Animals, Antibodies, Neutralizing pharmacology, Antibodies, Neutralizing therapeutic use, COVID-19 metabolism, Drug Design, Humans, Immunization, Passive, Molecular Targeted Therapy, SARS-CoV-2 drug effects, SARS-CoV-2 genetics, Viral Nonstructural Proteins chemistry, Viral Nonstructural Proteins genetics, Viral Structural Proteins chemistry, Viral Structural Proteins genetics, Virus Internalization drug effects, Virus Replication drug effects, COVID-19 Serotherapy, COVID-19 Drug Treatment, COVID-19 therapy, COVID-19 virology, Drug Discovery, SARS-CoV-2 physiology, Viral Nonstructural Proteins metabolism, Viral Structural Proteins metabolism
- Abstract
Coronavirus belongs to the family of Coronaviridae, comprising single-stranded, positive-sense RNA genome (+ ssRNA) of around 26 to 32 kilobases, and has been known to cause infection to a myriad of mammalian hosts, such as humans, cats, bats, civets, dogs, and camels with varied consequences in terms of death and debilitation. Strikingly, novel coronavirus (2019-nCoV), later renamed as severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), and found to be the causative agent of coronavirus disease-19 (COVID-19), shows 88% of sequence identity with bat-SL-CoVZC45 and bat-SL-CoVZXC21, 79% with SARS-CoV and 50% with MERS-CoV, respectively. Despite key amino acid residual variability, there is an incredible structural similarity between the receptor binding domain (RBD) of spike protein (S) of SARS-CoV-2 and SARS-CoV. During infection, spike protein of SARS-CoV-2 compared to SARS-CoV displays 10-20 times greater affinity for its cognate host cell receptor, angiotensin-converting enzyme 2 (ACE2), leading proteolytic cleavage of S protein by transmembrane protease serine 2 (TMPRSS2). Following cellular entry, the ORF-1a and ORF-1ab, located downstream to 5' end of + ssRNA genome, undergo translation, thereby forming two large polyproteins, pp1a and pp1ab. These polyproteins, following protease-induced cleavage and molecular assembly, form functional viral RNA polymerase, also referred to as replicase. Thereafter, uninterrupted orchestrated replication-transcription molecular events lead to the synthesis of multiple nested sets of subgenomic mRNAs (sgRNAs), which are finally translated to several structural and accessory proteins participating in structure formation and various molecular functions of virus, respectively. These multiple structural proteins assemble and encapsulate genomic RNA (gRNA), resulting in numerous viral progenies, which eventually exit the host cell, and spread infection to rest of the body. In this review, we primarily focus on genomic organization, structural and non-structural protein components, and potential prospective molecular targets for development of therapeutic drugs, convalescent plasm therapy, and a myriad of potential vaccines to tackle SARS-CoV-2 infection.
- Published
- 2021
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19. Small intestinal mucosal cells in piglets fed with probiotic and zinc: a qualitative and quantitative microanatomical study.
- Author
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Kalita A, Talukdar M, Sarma K, Kalita PC, Roychoudhury P, Kalita G, Choudhary OP, Chaudhary JK, Doley PJ, and Debroy S
- Subjects
- Animals, Intestinal Mucosa, Intestine, Small, Swine, Weaning, Zinc, Probiotics pharmacology
- Abstract
Background: Probiotics and zinc are commonly used and beneficial in pig production. This work aimed to assess the effects of probiotic and zinc on the mucosal cells of the small intestine in respect to digestive capacity and immunity in pre- and post-weaned piglets., Materials and Methods: Eighteen Large White Yorkshire piglets were divided equally into control and treatment groups. The piglets were maintained in standard management conditions and were weaned at 28 days of age. The treatment group of piglets fed a mixture of probiotics orally at 1.25 × 109 CFU/day and zinc at 2000 ppm/day from birth to 10 days of age. At three different age-groups viz. day 20 (pre-weaning) and, day 30 and day 60 (post-weaning), the animals were sacrificed. For histomorphology, the tissue samples were processed and stained with Mayer's haematoxylin and eosin for routine study, combined periodic acid-Schiff-Alcian blue for mucopolysaccharides and Masson-Hamperl argentaffin technique for argentaffin cells. The stained slides were observed under the microscope. The samples were processed as per the standard procedure for scanning and transmission electron microscopy. The statistical analysis of the data using the appropriate statistical tests was also conducted., Results: The mucosal epithelium of villi and crypts were lined by enterocytes, goblet cells, argentaffin cells, microfold (M-cell) cells, tuft cells and intraepithelial lymphocytes. The multipotent stem cells were located at the crypt base. The length of the enterocyte microvilli was significantly longer (p < 0.05) in the treatment group of piglets. The number of different types of goblet cells and argentaffin cells was more in treated piglets irrespective of segments of intestine and age. The intraepithelial lymphocytes were located in apical, nuclear and basal positions in the lining epithelium of both villus tip and base with their significant increase in the treatment group of piglets. The transmission electron microscopy revealed the frequent occurrence of tuft cells in the lining mucosa of the small intestine in treated piglets., Conclusions: Dietary supplementation of probiotic and zinc induced the number of different mucosal cells of villi and crypts in the small intestine that might suggest the greater absorptive capacity of nutrients and effective immunity in critical pre and post-weaned piglets.
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- 2021
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20. Applied anatomy and clinical significance of the maxillofacial and mandibular regions of the barking deer (Muntiacus muntjak) and sambar deer (Rusa unicolor).
- Author
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Keneisenuo K, Choudhary OP, Priyanka P, Kalita PC, Kalita A, Doley PJ, and Chaudhary JK
- Subjects
- Animals, Face, Female, Male, Mandible, Maxilla, Deer, Muntjacs
- Abstract
Background: There is no previously reported information on the applied anatomy and clinical significance of the maxillofacial and mandibular regions of the barking deer and sambar deer., Materials and Methods: Therefore, the present study was designed to provide some important clinical landmarks related to tracking of the infraorbital, mental and mandibular nerves with its clinical implications in regional anaesthesia in both the species., Results: In the present study, the distance between the most lateral bulging of the facial tuberosity to the infraorbital foramen and from the latter to the root of the alveolar tooth directly ventral to it was found to be 2.65 ± 0.01 cm and 0.90 ± ± 0.02 cm in males; 2.75 ± 0.01 cm, 1.11 ± 0.01 cm in females of barking deer and 4.57 ± 0.01 cm and 1.83 ± 0.02 cm in males; 4.52 ± 0.02 cm and 1.76 ± 0.02 cm in females of sambar deer. The infraorbital foramen was small, elliptical and was located at the level of first superior premolar teeth in barking deer and sambar deer. The facial tuberosity was located above the third superior premolar teeth in the barking deer but was located at the level of the first superior molar teeth in sambar deer. The distance between the lateral alveolar root of the third inferior incisor tooth to the mental foramen was 2.84 ± 0.01 cm in males, 2.78 ± 0.01 cm in females of barking deer and 3.04 ± 0.02 cm in males, 2.96 ± 0.01 cm in females of sambar deer which is an important landmark for achieving the location of the mental foramen nerve for the regional nerve block in both the species. The mandible of both the species showed oval-shaped mental foramen with unossified mandibular symphysis., Conclusions: The present study revealed that most of the parameters showed a statistically significant difference between the sexes in barking deer and sambar deer; however, from the practical point of view, these differences were meager. The results were discussed with regard to their clinical applications in various regional anaesthesia performed in maxillofacial and mandibular regions of both the species.
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- 2021
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21. Variability in in vitro biofilm production and antimicrobial sensitivity pattern among Pasteurella multocida strains.
- Author
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Prajapati A, Chanda MM, Dhayalan A, Yogisharadhya R, Chaudhary JK, Mohanty NN, and Shivachandra SB
- Subjects
- Anti-Bacterial Agents pharmacology, Anti-Infective Agents, Microbial Sensitivity Tests, Biofilms, Pasteurella multocida
- Abstract
Biofilm production, hitherto an uncharacterized feature among circulating Pasteurella multocida strains, was studied along with the antibiotic susceptibility pattern. On the basis of biofilm formation ability, all the strains were categorized into four groups under six different culture conditions: strong biofilm-forming (22%), moderate (19%), weak (51%), and non-adherent (7%). Strains from serogroups A and B formed significant biofilms in at least one culture condition whereas strains from serogroup D were unable to form biofilms. All strains were found to be susceptible to tetracycline. In addition, the correlation between diverse factors (host, capsule type, clinical condition and the tadD gene) as well as antimicrobial susceptibility in biofilm production were analyzed by Joint distribution models, and showed that enrofloxacin and azithromycin resistant strains were positively correlated with strong biofilm production.
- Published
- 2020
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22. Antidiabetic and Hypolipidaemic Action of Finger Millet ( Eleusine coracana ) - Enriched Probiotic Fermented Milk: An in vivo Rat Study.
- Author
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Chaudhary JK and Mudgal S
- Abstract
Research Background: Diabetes is a chronic multi-system disease having long term consequences to the health of people suffering from it. This study investigates the role of finger millet ( Eleusine coracana )-enriched probiotic fermented milk in alleviating the diabetic complications in streptozotocin-induced diabetic rats., Experimental Approach: The probiotic strain used in the study was Lactobacillus helveticus MTCC 5463. Study comprised six groups each containing 6 Sprague Dawley rats: two controls (nondiabetic and diabetic), and four diabetic groups fed finger millet-enriched probiotic fermented milk, probiotic fermented milk, finger millet flour or metformin (standard drug). Samples were administered orally for four weeks, and parameters associated with diabetic disorders were studied., Results and Conclusions: Oral administration of finger millet-enriched milk significantly (p<0.001) decreased (64.26%) the fasting blood glucose level of diabetic rats compared to metformin (56.43%) and diabetic groups receiving the probiotic fermented milk (18.88%) and finger millet flour (47.14%) after four weeks of treatment. The finger millet-enriched milk significantly ameliorated the diabetic symptoms polyphagia and polydipsia and improved body mass. In diabetic control group, body mass was reduced up to 15.60% at the end of experiment, while in the group receiving the probiotic fermented milk, body mass significantly (p<0.0001) increased by about 5-30%. Significant (p<0.0001) reduction in total cholesterol, triglyceride levels in the groups treated with finger millet flour, finger millet-enriched probiotic fermented milk and probiotic fermented milk was observed compared to diabetic control rats. The probiotic fermented milk enriched with finger millet caused significant (p<0.05) decrease in low-density lipoprotein and very-low-density lipoprotein levels (p<0.0001) and insignificant increase in high-density lipoprotein level. A reversal of altered activities of hepatic marker enzymes aspartate transaminase and alanine transaminase was observed in the group receiving the probiotic milk enriched with finger millet. Histological observations of pancreatic tissues and liver showed that the enriched milk prevents more severe changes in the acinar cells and ameliorated the inflammation and alteration in the liver structure to some extent. Therefore, the finger millet-enriched probiotic fermented milk can be a potential functional food in the management of diabetes., Novelty and Scientific Contribution: This is the only paper reporting about the antidiabetic potential of finger millet-enriched milk fermented using probiotic Lactobacillus helveticus MTCC 5463 and Streptococcus thermophilus MTCC 5460. It also shows the synergistic antidiabetic effect of milk and finger millet used in combination, thus offering a novel functional food., Competing Interests: CONFLICT OF INTEREST: The authors declare no conflict of interest.
- Published
- 2020
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23. Seroprevalence of bluetongue and presence of viral antigen and type-specific neutralizing antibodies in goats in Tripura, a state at Indo-Bangladesh border of northeastern India.
- Author
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De A, Das TK, Chand K, Debnath BC, Dey S, Hemadri D, Barman NN, Chaudhary JK, Muthuchelvan D, Saxena A, Tewari N, Chauhan A, Lohumi A, and Biswas SK
- Subjects
- Animals, Antibodies, Neutralizing blood, Antigens, Viral blood, Bluetongue virology, Goat Diseases virology, Goats, India epidemiology, Prevalence, Seroepidemiologic Studies, Bluetongue epidemiology, Bluetongue virus physiology, Goat Diseases epidemiology
- Abstract
Bluetongue (BT) is a notifiable multiple species transboundary viral disease of domestic and wild ruminants. Though the disease is enzootic in India, little is known of the disease burden and prevalent serotypes in Tripura, a hilly state of northeastern India sharing a vast porous border with Bangladesh. A surveillance study was conducted to understand the disease burden in goats in Tripura. Serum (n = 1240) and blood (n = 194) samples were collected during the year 2014 to 2017 from all the eight districts of Tripura. The overall prevalence of BT seroconversion was 47.58% whereas the presence of viral antigen was 20.61% at the individual level. Percent seroconversion was found more (50.47 ± 4.00, CI 41.31 to 49.47) in adult goats in comparison to the younger animals where it was 45.39 ± 2.08, CI 42.63 to 58.31. Presence of neutralizing antibodies in selected serum samples (n = 72) was investigated by serum neutralization test (SNT) against six bluetongue virus (BTV) serotypes and BTV-1 was found as most predominant (65.27%) followed by BTV-16 (26.38%), BTV-10 (20.83%), BTV-9 and 23 (13.88%), and BTV-2 (6.94%). To the best of our knowledge, this is the first study conducted in Tripura to investigate the presence of BTV antigen and type-specific neutralizing antibodies in apparently healthy goats.
- Published
- 2019
- Full Text
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24. Microgrooved-surface topography enhances cellular division and proliferation of mouse bone marrow-derived mesenchymal stem cells.
- Author
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Chaudhary JK and Rath PC
- Subjects
- Animals, Cell Movement physiology, Extracellular Matrix physiology, Gene Expression, Mice, Bone Marrow Cells cytology, Cell Differentiation physiology, Cell Division physiology, Cell Proliferation physiology, Mesenchymal Stem Cells cytology, Stem Cell Niche physiology
- Abstract
Mesenchymal stem cells' (MSCs) fate is largely determined by the various topographical features and a range of extracellular matrix (ECM) components present in their niches. Apart from maintaining structural stability, they regulate cell morphology, division, proliferation, migration and differentiation among others. Traditional MSC cultures, which are mainly based on two-dimensional smooth surfaces of culture dishes and plates, do not provide topographical cues similar to in vivo three-dimensional niches, impacting various cellular processes. Therefore, we culture the mouse bone marrow-derived MSCs on microgrooved bearing surface, partially mimicking in vivo reticulated niche, to study its effect on morphology, pluripotency factor-associated stemness, cell division and rate of proliferation. Following culture, morphological features, and MSC-specific marker gene expression, such as CD29, CD44, Sca-1 along with HSC (Haematopoietic stem cell)-specific markers like CD34, CD45, CD11b were evaluated by microscopy and immunophenotyping, respectively. HSC is another type of bone marrow stem cell population, which concertedly interacts with MSC during various functions, including haematopoiesis. In addition, mesenchymal stem cells were further analyzed for gene expression of pluripotency-associated transcription factors such as Oct3/4, Sox-2, Nanog and Myc, as well as differentiated into adipocytes, osteocytes and chondrocytes. Our results show that microgrooved surface-cultured mesenchymal stem cells (MMSCs) expressed higher levels of expected cell surface and pluripotency-associated markers and proliferated more rapidly (2-3×fold) with higher percentage of cells in S/G2-M-phase, consequently giving rise to higher cell yield compared to standard culture flask-grown cells (MSCs), taken as control. Furthermore, both MSCs and MMSCs showed considerable accumulation of intracellular lipid-droplets, higher alkaline phosphatase activity and secretion of extracellular matrix that are characteristics of adipogenesis, osteogenesis and chondrogenesis, respectively.
- Published
- 2017
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25. Vertebral scale system to measure heart size in thoracic radiographs of Indian Spitz, Labrador retriever and Mongrel dogs.
- Author
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Bodh D, Hoque M, Saxena AC, Gugjoo MB, Bist D, and Chaudhary JK
- Abstract
Aim: To establish reference values of vertebral heart score (VHS) in Indian Spitz, Labrador retriever, and Mongrel dogs; to assess applicability of VHS in these three dog breeds; to determine if breed, recumbency side, gender, body weight, and thoracic depth (TD) to thoracic width (TW) ratio has an influence on the VHS measurement in these dog breeds., Materials and Methods: A total of 60, client owned, clinically healthy Indian Spitz (n=20, mean age = 4.25±2.15 years, body weight = 11.87±2.7 kg), Labrador retriever (n=20, mean age = 4.75±1.91 years, body weight = 27.31±5.43 kg), and Mongrel dogs (n=20, mean age = 4.25±1.52 years, body weight = 16.25±3.99 kg), having no radiological and clinical signs of cardiovascular or pulmonary disease were included in the study. All dogs were restrained manually and left lateral (LL) and right lateral (RL) radiographic views were obtained. The size of heart in lateral radiographs was calculated using VHS method. Besides, the TD, TW and TD: TW were calculated to determine the type of thoracic conformation in the dog breeds. In addition to this, the effect of breed, side of recumbency, gender, body weight, and TD to TW ratio on the calculation of VHS was determined., Results: VHS was calculated in all the animals of the breeds. VHS in Spitz and Labrador retriever was significantly (p<0.0001, p<0.0001, respectively) >9.7±0.5 v. RL and LL VHS in Mongrel dog was significantly (p<0.037) >9.7±0.5 v. Significant (p<0.05) differences in the VHS were observed among Spitz, Labrador retriever and Mongrel dogs, being higher for Labrador retriever followed by Spitz and Mongrel dogs. VHS in RL recumbency was significantly (p<0.001) greater than VHS in LL recumbency in all three breeds. LL and RL VHS correlated significantly with each other in Spitz (r=0.58; p=0.02), Labrador retriever (r=0.87; p<0.0001), and Mongrel dogs (r=0.93; p<0.0001). Significant (p<0.05) differences in the TD and TW were observed among Spitz, Labrador retriever, and Mongrel dogs. Non-significant effect of gender, body weight, and TD to TW ratio on the VHS measurement was observed in each dog breed., Conclusion: Breed-specific VHS reference ranges should be used for the objective measurement of heart size in dogs. Furthermore, the radiographic view should also be taken into consideration to avoid any erroneous interpretation of cardiac enlargement in dogs.
- Published
- 2016
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26. Serum metabolic and minerals profile in norgestomet primed postpartum anestrous surti buffaloes.
- Author
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Parmar SC, Khasatiya CT, Chaudhary JK, Patel RV, and Dhamsaniya HB
- Abstract
Aim: The study was undertaken to find out the serum metabolic and minerals profile in postpartum anestrous surti buffaloes treated with norgestomet ear implants alone and in combination with pregnant mare serum gonadotropin (PMSG)., Materials and Methods: The study was conducted on 18 postpartum anestrous Surti buffaloes divided into three groups of six animals each at random to conduct the experiment. The buffaloes in Group-I and Group-II were implanted with Crestar ear implant for 9 days together with 2 ml injection of Crestar solution given i/m on the day of the implant insertion. In Group-II, additionally 500 IU PMSG was given i/m on the day of implant removal, whereas the buffaloes in Group-III served as anestrous control group and received 5 ml Normal Saline i/m on day 0 and 9 as a placebo treatment., Results: The overall serum total protein values did not differ significantly (p > 0.05) between time (days) intervals in any of the groups. The mean serum total cholesterol levels at 10(th) day and on the day of estrus were found significantly lower (p < 0.05) in the control group as compared to treatment Groups I and II. However, there was no significant difference (p > 0.05) at 10(th) day and on the day of estrus between treatment groups (T1 and T2). The overall mean serum cobalt, zinc, iron, and manganese values did not differ significantly (p > 0.05) between different time intervals among any of the groups, except copper which was significantly lower (p < 0.05) at 10(th) day in control group as compared to treatment groups., Conclusion: Microelements cannot be synthesized in the body. Hence, it is concluded that the mineral mixture should be supplied daily in the animals ration to suffice the requirement of the trace elements. The mean serum metabolic and micro-minerals profiles in treatment and control groups revealed that overall mean serum total protein, cholesterol, copper, and zinc levels were apparently higher in treatment groups whereas, mean serum cobalt, iron, and manganese concentration had no consistent trend between treatment and control groups of Surti buffaloes.
- Published
- 2015
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27. Cell cycle arrest and apoptosis by expression of a novel TPIP (TPIP-C2) cDNA encoding a C2-domain in HEK-293 cells.
- Author
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Mishra RR, Chaudhary JK, and Rath PC
- Subjects
- Amino Acid Sequence, Base Sequence, Cell Line, Cell Proliferation, Cell Survival, Dual-Specificity Phosphatases chemistry, HEK293 Cells, Humans, Protein Isoforms genetics, Protein Processing, Post-Translational, Protein Structure, Secondary, Sequence Alignment, Sequence Analysis, DNA, Apoptosis genetics, Cell Cycle Checkpoints genetics, Dual-Specificity Phosphatases genetics, Dual-Specificity Phosphatases metabolism, Membrane Proteins genetics, Membrane Proteins metabolism, PTEN Phosphohydrolase genetics, PTEN Phosphohydrolase metabolism
- Abstract
The human TPIP (TPTE and PTEN homologous Inositol lipid Phosphatase) belongs to the PTEN (Phosphatase and TENsin homologue deleted on chromosome 10) family of dual-specific phosphatases and is expressed from the human chromosome 13 as multiple splice-variants, e.g., TPIPα, β, γ mRNAs. PTEN is a well characterized tumor suppressor, which controls survival, adhesion, motility and migration of mammalian cells, its C2-domain plays crucial role in controlling these functions. However, role of isolated C2-domain protein in regulation of cell proliferation and apoptosis is not reported. We report sequence analysis and function of a novel human TPIP (TPIP-C2) cDNA encoding a 193 amino acid C2-domain in cell proliferation and apoptosis regulation. In silico analysis and homology modelling revealed that the C2-domain of TPIP-C2 is similar to that of PTEN but with short disorder sequences overlapping or adjacent to the post-translational modification sites. Overexpression of TPIP-C2 cDNA in human embryonic kidney (HEK-293) cells caused cell cycle arrest, inhibition of cell proliferation and induced apoptosis in an activated caspase 3 and PARP-dependent manner in comparison to overexpression of the full length human PTEN cDNA. TPIP-C2 overexpressed cells also showed S-phase cell cycle arrest. We suggest that C2-domain of TPIP-C2 may act as a dominant negative effector, which may bind to and arrest the cell proliferation signalling complex and isolated TPIP-C2-domain-like proteins expressed in mammalian cells/tissues may play important role in regulation of cell proliferation and apoptosis. The TPIP-C2 cDNA may be exploited for inducing cell cycle-inhibition and apoptosis in human cancer cells and tissues.
- Published
- 2012
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28. A novel human TPIP splice-variant (TPIP-C2) mRNA, expressed in human and mouse tissues, strongly inhibits cell growth in HeLa cells.
- Author
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Mishra RR, Chaudhary JK, Bajaj GD, and Rath PC
- Subjects
- Animals, Cell Adhesion, Cell Movement, Cell Proliferation, DNA, Complementary metabolism, Gene Expression Profiling, Gene Expression Regulation, Neoplastic, Gene Library, HeLa Cells, Humans, Kidney metabolism, Male, Mice, Open Reading Frames, RNA, Messenger metabolism, Rats, Testis metabolism, Tissue Distribution, Alternative Splicing, Carrier Proteins genetics
- Abstract
Alternative splicing of mRNAs is known to involve a major regulation of gene expression at RNA level in mammalian cells. The PTEN (Phosphatase and TENsin homologue deleted from the human chromosome 10), TPTE (Transmembrane Phosphatase with TEnsin homology) and TPIP (TPTE and PTEN homologous Inositol lipid Phosphatase) belong to a family of dual-specific lipid and protein phosphatases. PTEN is a well characterized tumor suppressor, which plays crucial role in cell survival, cell cycle regulation, cell proliferation as well as adhesion, motility and migration of cells. The C2-domain of PTEN is essential for PTEN-functions. We have isolated a novel 1019 bp human TPIP cDNA (TPIP-C2) from a human testis cDNA library. In silico analysis of the cDNA revealed that it is produced from the TPIP-locus on the human chromosome 13 by alternative RNA-splicing. It has a unique 5'-Alu sequence, a LINE sequence followed by a 582 bp Open Reading Frame (ORF) encoding a 193 aa polypeptide with a partial phosphatase domain and a C2-domain. TPIP-C2 mRNA is expressed in human testis and in mouse tissues. Mouse testis and brain showed higher levels of TPIP-C2 mRNA in comparison to the heart, liver and kidney under normal physiological conditions. TPIP-C2 mRNAs from human and mouse testes show extensive sequence identity. Over-expression of TPIP-C2 cDNA in HeLa cells strongly (up to 85%) inhibited cell growth/proliferation and caused apoptosis in a caspase 3-dependent manner. These findings suggest for the first time that a TPIP splice-variant mRNA with a partial phosphatase domain and a C2-domain is expressed in cells and tissues of human and murine origins under normal physiological conditions. Inhibition of cell growth/proliferation and induction of apoptosis by overexpression of TPIP-C2 mRNA in HeLa cells suggest that it may be involved in negative regulation of cell growth/proliferation.
- Published
- 2011
- Full Text
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