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Bock M, Sierra C, Tan R, Shankel T, Nayak S, Fitts J, Chinnock R. Rituximab for the Treatment of Refractory EBV Viremia and Prevention of PTLD in Pediatric Heart Transplant Recipients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Nayak S, Kataria A, Sharma MK, Rastogi A, Gupta E, Singh A, Tiwari SC. Hepatitis C Virus-associated Membranoproliferative Glomerulonephritis Treated with Directly Acting Antiviral Therapy. Indian J Nephrol 2018; 28:462-464. [PMID: 30647501 PMCID: PMC6309397 DOI: 10.4103/ijn.ijn_235_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Hepatitis C virus (HCV) infection has been shown to affect kidneys with various histopathological pattern on the kidney biopsy. These commonly include a membranoproliferative glomerulonephritis (MPGN) pattern with mixed cryoglobulinemia (CG), thrombotic microangiopathy, membranous nephropathy, and vasculitis affecting medium and small vessels of the kidneys causing polyarteritis nodosa. It has been rarely associated with MPGN without detectable CG. We present one such patient who presented to us with HCV-associated MPGN without detectable CG, who recovered completely with directly acting antiviral therapy without any immunosuppression.
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Nayak S, Sharma M, Kataria A, Tiwari SC, Rastogi A, Mukund A. Cholemic Nephrosis from Acute Hepatitis E Virus Infection: A Forgotten Entity? Indian J Nephrol 2018; 28:250-251. [PMID: 29962682 PMCID: PMC5998717 DOI: 10.4103/ijn.ijn_168_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Sahoo AK, Das JK, Nayak S. Isolation, culture, characterization, and osteogenic differentiation of canine endometrial mesenchymal stem cell. Vet World 2017; 10:1533-1541. [PMID: 29391698 PMCID: PMC5771182 DOI: 10.14202/vetworld.2017.1533-1541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 12/04/2017] [Indexed: 01/09/2023] Open
Abstract
Aim In this study, the canine endometrium tissue is characterized for its stem cell properties such as adherence to tissue culture plate (plasticity), short population doubling time, serial clonal passaging, long-term culturing properties, stem cell marker expression, and multilineage differentiation potential. Materials and Methods The present work describes a novel isolation protocol for obtaining mesenchymal stem cells from the uterine endometrium and is compared with cells derived from umbilical cord matrix as a positive control. These cells are clonogenic, can undergo several population doublings in vitro, and can be differentiated to the osteocytes in mature mesenchymal tissues when grown in osteogenic differentiation media as detected by Alizarin Red-S staining. Results It is reported for the first time that the cells derived from the canine endometrium (e-multipotent stem cells [MSCs]) were able to differentiate into a heterologous cell type: Osteocytes, thus demonstrating the presence of MSCs. Thus, the endometrium may be told as a potential source of MSCs which can be used for various therapeutic purposes. Conclusion The endometrium can be used as a potential source of MSCs, which can be used for various therapeutic purposes.
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Culwell K, Griffiss M, Nayak S, Avery A, Friend D. A randomized, placebo-controlled pilot study to determine the effect and duration of acidform gel (AMPHORA) on vaginal pH. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gupta Y, Ajithkumar B, Kale HS, Nayak S, Sabhapathy S, Sureshkumar S, Swami RV, Chengalur JN, Ghosh SK, Ishwara-Chandra CH, Joshi BC, Kanekar N, Lal DV, Roy S. The Upgraded GMRT:Opening New Windows on the Radio Universe. CURR SCI INDIA 2017. [DOI: 10.18520/cs/v113/i04/707-714] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mukhi P, Mohapatra SS, Bhattacharjee M, Ray KK, Muraleedharan TS, Arun A, Sathyavathi R, Juluri RR, Satyam PV, Panda AK, Biswas A, Nayak S, Bojja S, Pratihar S, Roy S. Mercury based drug in ancient India: The red sulfide of mercury in nanoscale. J Ayurveda Integr Med 2017; 8:93-98. [PMID: 28600164 PMCID: PMC5497007 DOI: 10.1016/j.jaim.2017.01.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 11/26/2022] Open
Abstract
Mercury is one of the elements which had attracted the attention of the chemists and physicians of ancient India and China. Among the various metal based drugs which utilize mercury, we became interested in the red sulfide of mercury which is known in ancient Indian literature as rasasindur (alias rasasindura, rasasindoor, rasasinduram, sindur, or sindoor) and is used extensively in various ailments and diseases. Following various physico-chemical characterizations it is concluded that rasasindur is chemically pure α-HgS with Hg:S ratio as 1:1. Analysis of rasasindur vide Transmission Electron Microscopy (TEM) showed that the particles are in nanoscale. Bio-chemical studies of rasasindur were also demonstrated. It interacts with Bovine Serum Albumin (BSA) with an association constant of (9.76 ± 0.56) × 103 M−1 and behaves as a protease inhibitor by inhibiting the proteolysis of BSA by trypsin. It also showed mild antioxidant properties.
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Kumar A, Nayak S, Pathak P, Purkait S, Suri V, Sharma MC, Mukhopadhyay A, Suri A, Sarkar C. P01.27 Repressive histone marks (H3K27me3) and DNA hypermethylation suggests epigenetic regulation of miR-379/miR-410 (C14MC) cluster in oligodendrogliomas. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sarkar C, Kumar A, Pathak P, Purkait S, Nayak S, Faruq M, Suri V, Sharma MC, Suri A. P03.22 BRAF, FGFR1 and PDGFRA alterations in oligodendrogliomas - correlation with MAPK/mTOR pathway activation. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Saraf KK, Kumaresan A, Nayak S, Chhillar S, Sreela L, Kumar S, Tripathi UK, Datta TK, Mohanty TK. Development of an in vitro oviduct epithelial explants model for studying sperm-oviduct binding in the buffalo. Reprod Domest Anim 2017; 52:687-691. [DOI: 10.1111/rda.12952] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 02/07/2017] [Indexed: 12/01/2022]
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Rajak S, Kumaresan A, Attupuram N, Chhillar S, Baithalu R, Nayak S, Sreela L, Singh RK, Tripathi U, Mohanty T, Yadav S. Age-related changes in transcriptional abundance and circulating levels of anti-Mullerian hormone and Sertoli cell count in crossbred and Zebu bovine males. Theriogenology 2017; 89:1-8. [DOI: 10.1016/j.theriogenology.2016.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 09/27/2016] [Accepted: 10/03/2016] [Indexed: 02/01/2023]
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Desai KT, Patel F, Patel PB, Nayak S, Patel NB, Bansal RK. A case-control study of epidemiological factors associated with leptospirosis in South Gujarat region. J Postgrad Med 2017; 62:223-227. [PMID: 27763478 PMCID: PMC5105206 DOI: 10.4103/0022-3859.188551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The current study was planned to identify the epidemiological factors associated with leptospirosis in South Gujarat region using neighborhood controls. METHODS A total of 100 cases of leptospirosis occurred in South Gujarat region during the year 2012 were selected using simple random sampling. Three neighbors of the selected cases formed the controls (n = 300). A pretested structured questionnaire was used for data collection and data were analyzed using Epi Info 2007. RESULTS There was significant association of illiteracy (odds ratio [OR] =1.82, 95% confidence interval [CI] =1.14-2.89), working in waterlogged fields during the reference season (OR = 4.6, 95% CI = 1.6-17.9), swimming/bathing in canals, open air defecation practices, storage of cow dung in or surrounding house, residence in the house made up of cow dung walls, households with access of food to rodents, injuries over hands/foot during the endemic season (OR = 3, 95% CI = 1.8-4.8), and history of skin disease during the endemic season (OR = 4.2, 95% CI = 2-8.5), with leptospirosis. Only 10% of individuals had gumboots for protection. A total of 83 (83%) cases and 240 (80%) controls had taken oral doxycycline chemoprophylaxis (P > 0.05). Cases had taken chemoprophylaxis for a median 4 weeks (range: 1-8) while controls had taken the same for median 8 weeks (range = 1-8) (P < 0.002). CONCLUSIONS Although the commonly established factors appear to be associated with leptospirosis, the role of host factors seems to play a more important role in determining susceptibility to leptospirosis in exposed individuals.
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Lee D, Nayak S, Martin SW, Heatherington AC, Vicini P, Hua F. A quantitative systems pharmacology model of blood coagulation network describes in vivo biomarker changes in non-bleeding subjects. J Thromb Haemost 2016; 14:2430-2445. [PMID: 27666750 DOI: 10.1111/jth.13515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 09/01/2016] [Indexed: 01/03/2023]
Abstract
Essentials Baseline coagulation activity can be detected in non-bleeding state by in vivo biomarker levels. A detailed mathematical model of coagulation was developed to describe the non-bleeding state. Optimized model described in vivo biomarkers with recombinant activated factor VII treatment. Sensitivity analysis predicted prothrombin fragment 1 + 2 and D-dimer are regulated differently. SUMMARY Background Prothrombin fragment 1 + 2 (F1 + 2 ), thrombin-antithrombin III complex (TAT) and D-dimer can be detected in plasma from non-bleeding hemostatically normal subjects or hemophilic patients. They are often used as safety or pharmacodynamic biomarkers for hemostatis-modulating therapies in the clinic, and provide insights into in vivo coagulation activity. Objectives To develop a quantitative systems pharmacology (QSP) model of the blood coagulation network to describe in vivo biomarkers, including F1 + 2 , TAT, and D-dimer, under non-bleeding conditions. Methods The QSP model included intrinsic and extrinsic coagulation pathways, platelet activation state-dependent kinetics, and a two-compartment pharmacokinetics model for recombinant activated factor VII (rFVIIa). Literature data on F1 + 2 and D-dimer at baseline and changes with rFVIIa treatment were used for parameter optimization. Multiparametric sensitivity analysis (MPSA) was used to understand key proteins that regulate F1 + 2 , TAT and D-dimer levels. Results The model was able to describe tissue factor (TF)-dependent baseline levels of F1 + 2 , TAT and D-dimer in a non-bleeding state, and their increases in hemostatically normal subjects and hemophilic patients treated with different doses of rFVIIa. The amount of TF required is predicted to be very low in a non-bleeding state. The model also predicts that these biomarker levels will be similar in hemostatically normal subjects and hemophilic patients. MPSA revealed that F1 + 2 and TAT levels are highly correlated, and that D-dimer is more sensitive to the perturbation of coagulation protein concentrations. Conclusions A QSP model for non-bleeding baseline coagulation activity was established with data from clinically relevant in vivo biomarkers at baseline and changes in response to rFVIIa treatment. This model will provide future mechanistic insights into this system.
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Satyam L, Poddutoori R, Mukherjee S, Marappan S, Gopinath S, Pothuganti M, Nayak S, Kaza L, Nandish C, Amith A, Ravindra M, Nagaraju A, Antony T, Pandit C, Chelur S, Daginakatte G, Samajdar S, Ramachandra M. Potent and selective inhibition of CDK7 by novel covalent inhibitors. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32978-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nayak S, Lenka PK, Equebal A, Biswas A. Custom-made silicone hand prosthesis: A case study. HAND SURGERY & REHABILITATION 2016; 35:299-303. [PMID: 27781997 DOI: 10.1016/j.hansur.2016.05.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 03/16/2016] [Accepted: 05/20/2016] [Indexed: 10/21/2022]
Abstract
Up to now, a cosmetic glove was the most common method for managing transmetacarpal (TMC) and carpometacarpal (CMC) amputations, but it is devoid of markings and body color. At this amputation level, it is very difficult to fit a functional prosthesis because of the short available length, unsightly shape, grafted skin, contracture and lack of functional prosthetic options. A 30-year-old male came to our clinic with amputation at the 1st to 4th carpometacarpal level and a 5th metacarpal that was projected laterally and fused with the carpal bone. The stump had grafted skin, redness, and an unhealed suture line. He complained of pain projected over the metacarpal and suture area. The clinical team members decided to fabricate a custom-made silicone hand prosthesis to accommodate the stump, protect the grafted skin, improve the hand's appearance and provide some passive function. The custom silicone hand prosthesis was fabricated with modified flexible wires to provide passive interphalangeal movement. Basic training, care and maintenance instructions for the prosthesis were given to the patient. The silicone hand prosthesis was able to restore the appearance of the lost digits and provide some passive function. His pain (VAS score) was reduced. Improvement in activities of daily living was found in the DASH questionnaire and Jebsen-Taylor Hand Function test. A silicone glove is a good option for more distal amputations, as it can accommodate any deformity, protect the skin, enhance the appearance and provide functional assistance. This case study provides a simple method to get passively movable fingers after proximal hand amputation.
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Patra S, Nayak S, Pradhan S, Bara D, Sarangi C, Mohapatra C. Multiple variations in the external features of a single cadaveric liver – A case report. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Gurawalia J, Nayak S. 529. Retrospective study of modified video-endoscopic versus open inguinal lymphadenectomy. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Nayak S, Chakraverty S. Numerical solution of fuzzy stochastic differential equation. JOURNAL OF INTELLIGENT & FUZZY SYSTEMS 2016. [DOI: 10.3233/ifs-162168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kumar M, Ghosh S, Nayak S, Das A. Recent advances in biosensor based diagnosis of urinary tract infection. Biosens Bioelectron 2016; 80:497-510. [DOI: 10.1016/j.bios.2016.02.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 02/06/2016] [Accepted: 02/08/2016] [Indexed: 12/16/2022]
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Nayak S, Siddiqui JK, Varner JD. Modelling and analysis of an ensemble of eukaryotic translation initiation models. IET Syst Biol 2016; 5:2. [PMID: 21261397 DOI: 10.1049/iet-syb.2009.0065] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Programmed protein synthesis plays an important role in the cell cycle. Deregulated translation has been observed in several cancers. In this study, the authors constructed an ensemble of mathematical models describing the integration of growth factor signals with translation initiation. Using these models, the authors estimated critical structural features of the translation architecture. Sensitivity and robustness analysis with and without growth factors suggested that a balance between competing regulatory programmes governed translation initiation. Proteins such as Akt and mTor promoted initiation by integrating growth factor signals with the assembly of the 80S initiation complex. However, negative regulators such as PTEN and 4EBP1 restrained initiation in the absence of stimulation. Other proteins such as eIF4E were also found to be structurally critical as deletion of amplification of these components resulted in a network incapable of nominal operation. These findings could help understand the molecular basis of translation deregulation observed in cancer and perhaps lead to new anti-cancer therapeutic strategies. [Includes supplementary material].
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Ahmed A, Nayak S, Babu S, Vyakarnam A. Impact of Type I IFN dysregulation in M. tuberculosis infection on T cell responses. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Dangre G, Mudey A, Tankhiwale N, Nayak S. Point surveillance of staphylococcus aureus nasal carriage among health care workers in rural tertiary care center of Central India. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Makroo R, Nayak S, Chowdhry M, Jasuja S, Sagar G, Rosamma N, Thakur U. Role of therapeutic plasma exchange in reducing ABO titers in patients undergoing ABO-incompatible renal transplant. APOLLO MEDICINE 2016. [DOI: 10.1016/j.apme.2016.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Nayak S, Chakraverty S. Numerical Solution of Stochastic Point-Kinetics Neutron Equation with Fuzzy Parameters. NUCL TECHNOL 2016. [DOI: 10.13182/nt15-63] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Selvakumar R, Chase S, Thomas JK, Kota A, Nayak S. Idiopathic Spontaneous Intraperitoneal Haemorrhage - a rare initial presentation of Haemophilia B. ACTA ACUST UNITED AC 2016; 37:75-6. [PMID: 29668189 DOI: 10.7869/tg.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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