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Novichkova E, Nayak S, Boussiba S, Gopas J, Zilberg D, Khozin-Goldberg I. Dietary Application of the Microalga Lobosphaera incisa P127 Reduces Severity of Intestinal Inflammation, Modulates Gut-Associated Gene Expression, and Microbiome in the Zebrafish Model of IBD. Mol Nutr Food Res 2023; 67:e2200253. [PMID: 36683256 DOI: 10.1002/mnfr.202200253] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 11/30/2022] [Indexed: 01/24/2023]
Abstract
SCOPE Microalgae are an emerging nutritional resource of biomolecules with potential to alleviate gut inflammation. The study explores the anti-inflammatory and immunomodulatory potential of the microalga Lobosphaera incisa P127, which accumulates a rare omega-6 LC-PUFA dihomo-ɣ-linolenic acid (DGLA) under nitrogen starvation. The therapeutic potential of dietary supplementation with P127 is investigated in the zebrafish model of IBD (TNBS-induced colitis). METHODS AND RESULTS Guts are sampled from zebrafish fed experimental diets for 4 weeks, before and 24 h after TNBS challenge. Diets containing 15% non-starved (Ns) and 7.5% and 15% N-starved (St) algal biomass significantly attenuate the severity of gut injury and goblet cell depletion. In contrast, diets containing 7.5% Ns and DGLA ethyl ester have no effect on gut condition. Fish fed 15% St, high-DGLA biomass, have the fewest individuals with pathological alterations in the gut. Dietary inclusion of Ns and St distinctly modulates gut-associated expression of the immune and inflammatory genes. Fish fed 15% Ns biomass display a coordinated boost in immune gene expression and show major changes in the gut microbiome prior challenge. CONCLUSION Dietary inclusion of L. incisa biomass at two physiological states, ameliorates TNBS-induced gut inflammation, suggesting the synergistic beneficial effects of biomass components not limited to DGLA.
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Affiliation(s)
- Ekaterina Novichkova
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
- The Albert Katz International School for Desert Studies, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
| | - Sagar Nayak
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
- The Jacob Blaustein Center for Scientific Cooperation, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
| | - Sammy Boussiba
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
| | - Jacob Gopas
- Department of Microbiology and Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, 8400501, Israel
| | - Dina Zilberg
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
| | - Inna Khozin-Goldberg
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, 8499000, Israel
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Cadzow L, Gokhale P, Ganapathy S, Sullivan P, Nayak S, Shenker S, Schlabach M, Tobin E, Matulonis U, Liu J, Stegmeier F, Wylie A. KSQ-4279, a first-in-class USP1 inhibitor shows strong combination activity in BRCA mutant cancers with intrinsic or acquired resistance to PARP inhibitors. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00900-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kumar V, Nayak S, Rathore V, Bhat S, jindal A, Siddiqui S, Dola J, sahu A, Galhotra A, nagarkar N, Behera A. POS-027 COMPARISON OF CLINICAL OUTCOMES OF FIRST, SECOND, AND THIRD WAVES OF COVID19 AMONG CKD PATIENTS REQUIRING RRT IN A TERTIARY CARE HOSPITAL IN CENTRAL INDIA. Kidney Int Rep 2022. [PMCID: PMC9475100 DOI: 10.1016/j.ekir.2022.07.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Overmiller A, Uchiyama A, Hope E, Sawaya A, Nayak S, Hasneen K, Dell'Orso S, Brooks S, Morasso M. 760 Cellular landscape of the skin is primed by the oral epithelial regenerative transcription factor Pitx1 to promote wound healing. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Bajpai D, Mehdizadeh S, Uchiyama A, Inoue Y, Sawaya A, Nayak S, Brooks S, Kellett M, Palazzo E, Motegi S, Cataisson C, Morasso M. 088 Deciphering the molecular signals of EGFR pathway activation in Dlx3 deficient skin in cSCC. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pandey A, Nayak S, Khare A, Sharma R, Reddy BVV, Risheen GD. Perspectives in the use of tannins in animal production & health: a review. Journal of Livestock Science 2022. [DOI: 10.33259/jlivestsci.2022.112-119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nayak S, Greenspan SL. Cost-effectiveness of 3 versus 6 years of zoledronic acid treatment before bisphosphonate holiday for women with osteoporosis. Osteoporos Int 2022; 33:229-238. [PMID: 34515818 DOI: 10.1007/s00198-021-06010-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 05/17/2021] [Indexed: 12/16/2022]
Abstract
UNLABELLED We evaluated the cost-effectiveness of recurrent periods of 3 versus 6 years of zoledronic acid treatment prior to 3-year bisphosphonate holidays for US postmenopausal women with osteoporosis and femoral neck BMD T-scores between - 2.5 and - 3.5. We found that cycles of 3 years of treatment followed by holidays is likely to be the more cost-effective option. INTRODUCTION We compared the effectiveness and cost-effectiveness of cycles of 3 years versus 6 years of zoledronic acid treatment prior to 3-year bisphosphonate holidays for US postmenopausal women with osteoporosis. METHODS We developed an individual-level state-transition microsimulation cost-effectiveness model to compare treatment strategies over the lifetime of recurrent periods of 3 years of zoledronic acid followed by 3-year holidays (zoledronic acid 3/3), recurrent periods of 6 years of zoledronic acid followed by 3-year holidays (zoledronic acid 6/3), and no zoledronic acid treatment for women with osteoporosis and femoral neck BMD T-scores between - 2.5 and - 3.5. RESULTS Base-case analysis and all key parameter sensitivity analysis findings for every treatment initiation age evaluated (50, 60, 70, and 80) revealed that zoledronic acid 3/3 was consistently the most cost-effective strategy, assuming a willingness-to-pay of $100,000 per quality-adjusted life-year (QALY). In general, the zoledronic acid 3/3 and 6/3 strategies were relatively close in effectiveness (QALYs) over the lifetime; however, lifetime direct health care costs were on average approximately $2000 lower for the 3/3 strategy. Probabilistic sensitivity analysis results revealed that the zoledronic acid 3/3 strategy was favored in greater than 70% of the iterations for a willingness-to-pay threshold of $100,000/QALY for all treatment initiation ages evaluated. CONCLUSIONS After 3 years of zoledronic acid treatment for postmenopausal women with osteoporosis and femoral neck BMD T-scores between - 2.5 and - 3.5, taking 3-year holidays before restarting another treatment cycle is likely to be more cost-effective over the lifetime than cycles of 6 years of treatment prior to 3-year holidays.
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Affiliation(s)
- S Nayak
- Berkeley Madonna, Inc., 1025 Peralta Ave, CA, 94706, Albany, USA.
| | - S L Greenspan
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Reddy BVV, Nayak S, Khare A, Pal RP, Sharma R, Chourasiya A, Namdeo S, Thakur S. Role of hydroxy trace minerals on health and production of livestock: a review. Journal of Livestock Science 2021. [DOI: 10.33259/jlivestsci.2021.279-286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Overmiller A, Uchiyama A, Hope E, Grassini D, Sawaya A, Nayak S, Hasneen K, Chen Y, Brooks S, Morasso M. 611 Oral epithelial regenerative transcription factor Pitx1 reprograms keratinocytes to promote cutaneous wound healing. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bhatt S, Bansal H, Nayak S, Dangwal S. High presacral collection approached through the perineal route: A novel computed tomography-guided technique. SA J Radiol 2021; 25:2014. [PMID: 33824745 PMCID: PMC8007994 DOI: 10.4102/sajr.v25i1.2014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/11/2020] [Indexed: 11/02/2022] Open
Abstract
For a definitive diagnosis of abdomino-pelvic lesions, percutaneous aspiration or biopsy is often necessary; however, finding a safe 'window' for access is challenging. This case report discusses a novel method to approach a deep pelvic collection and also briefly reviews the various approaches to access such lesions. A sample was obtained from a non-resolving presacral collection using a CT-guided percutaneous, trans-perineal approach with repeated sessions of hydro-dissection. Successful aspiration and analysis revealed multi-drug resistant tuberculosis, thus guiding appropriate management.
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Affiliation(s)
- Shuchi Bhatt
- Department of Radiodiagnosis, Faculty of Health Sciences, University College of Medical Sciences and GTB Hospital, Dilshad Garden, Delhi, India
| | - Harshit Bansal
- Department of Radiodiagnosis, Faculty of Health Sciences, University College of Medical Sciences and GTB Hospital, Dilshad Garden, Delhi, India
| | - Sagar Nayak
- Department of Radiodiagnosis, Faculty of Health Sciences, University College of Medical Sciences and GTB Hospital, Dilshad Garden, Delhi, India
| | - Saumya Dangwal
- Department of Orthopaedics, Faculty of Health Sciences, University College of Medical Sciences and GTB Hospital, Dilshad Garden, Delhi, India
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Wattoo G, Nayak S, Khan S, Morgan J, Hocking H, MacInnes E, Kolar KM, Rogers C, Olubowale O, Rigby K, Kazzazi NH, Wyld L. Long-term outcomes of latissimus dorsi flap breast reconstructions: A single-centre observational cohort study with up to 12 years of follow up. J Plast Reconstr Aesthet Surg 2020; 74:2202-2209. [PMID: 33451948 DOI: 10.1016/j.bjps.2020.12.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 11/22/2020] [Accepted: 12/19/2020] [Indexed: 11/26/2022]
Abstract
INTRODUCTION The Latissimus Dorsi Myocutaneous Flap (LDMF) is used in post-mastectomy reconstruction. This study has evaluated long-term (up to 12 years) surgical- and patient-reported outcomes from LDMF procedures. METHOD A retrospective analysis of consecutive LDMF procedures in two UK hospitals, performed between 2006 and 2016. Case notes were reviewed for indications and outcomes. Patients were sent the BREAST-QⓇ survey by post. Outcomes, including surgical adverse events, revision, and implant loss rates, were correlated with patient risk factors. RESULTS A BREAST-Q was posted to 199/248 LDMF patients in 2018, (excluding 49 patients due to death, reduced cognitive function and incorrect coding) of whom 77 patients responded (38.7%). In 188 cases (representing 208 LDMFs), surgical outcomes were assessable. Median time since LDMF surgery was 7 years (range 2-12). Rates of acute implant loss were 9/139 (6.4%), flap necrosis 7/208 (3.4%), shoulder stiffness 4/208 (1.9%), chronic pain 24/208 (11.5%) and unplanned revision surgery 13/208 (7%). Median satisfaction levels were high with 78% of patients satisfied with treatment outcomes, 65% of patients satisfied with their breasts, 71% of patients satisfied psychosocially and 75% of patients satisfied with their chest. Receipt of radiotherapy was not associated with a higher risk of flap necrosis or capsule formation. CONCLUSION Long-term follow-up of a large cohort of LDMF reconstruction patients show relatively low levels of adverse events and unplanned revision surgery and high patient satisfaction, which demonstrates how temporally robust the technique is. With the rise in popularity of acellular dermal matrix reconstructions, the LDMF has relatively fallen out of favour but its potential in primary and delayed reconstruction is demonstrated.
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Affiliation(s)
- G Wattoo
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - S Nayak
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - S Khan
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - J Morgan
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom; Department of Oncology and Metabolism, E Floor, Medical School, Beech Hill Road, University of Sheffield, S10 2RX, United Kingdom
| | - H Hocking
- Clinical Audit Department, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - E MacInnes
- Leeds Teaching Hospitals NHS FT, Leeds, United Kingdom
| | - K M Kolar
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - C Rogers
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - O Olubowale
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - K Rigby
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - N H Kazzazi
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom
| | - L Wyld
- Jasmine Breast Unit, Doncaster and Bassetlaw Teaching Hospitals NHS FT, Armthorpe Road, Doncaster, United Kingdom; Department of Oncology and Metabolism, E Floor, Medical School, Beech Hill Road, University of Sheffield, S10 2RX, United Kingdom.
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12
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Raseta M, Bazarova A, Wright H, Parrott A, Nayak S. A novel toolkit for the prediction of clinical outcomes following mechanical thrombectomy. Clin Radiol 2020; 75:795.e15-795.e21. [PMID: 32718742 DOI: 10.1016/j.crad.2020.06.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 06/18/2020] [Indexed: 11/16/2022]
Abstract
AIM To develop a robust toolkit to aid decision-making for mechanical thrombectomy (MT) based on readily available patient variables that could accurately predict functional outcome following MT. MATERIALS AND METHODS Data from patients with anterior circulation stroke who underwent MT between October 2009 and January 2018 (n=239) were identified from our MT database. Patient explanatory variables were age, sex, National Institutes of Health Stroke Scale (NIHSS), Alberta Stroke Program Early CT Score (ASPECTS), collateral score, and Glasgow Coma Scale. Five models were developed from the data to predict five outcomes of interest: model 1: prediction of survival: modified Rankin Scale (mRS) of 0-5 (alive) or 6 (dead); model 2: prediction of good/poor outcome: mRS of 0-3 (good), or 4-6 (poor); model 3: prediction of good/poor outcome: mRS of 0-2 (good), or 3-6 (poor); model 4: prediction of mRS category: mRS of 0-2 (no disability), 3 (minor disability), 4-5 (severe disability) or 6 (dead); model 5: prediction of the exact mRs score (mRs as a continuous variable). The accuracy and discriminative power of each predictive model were tested. RESULTS Prediction of survival was 87% accurate (area under the curve [AUC] 0.89). Prediction of good/poor outcome was 91% accurate (AUC 0.94) for Model 2 and 95% accurate (AUC 0.98) for Model 3. Prediction of mRS category was 76% accurate, and increased to 98% using the "one-score-out rule". Prediction of the exact mRS value was accurate to an error of 0.89. CONCLUSIONS This novel toolkit provided accurate estimations of outcome for MT.
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Affiliation(s)
- M Raseta
- Institute for Applied Clinical Sciences, Keele University, Staffordshire, ST5 5BG, UK
| | - A Bazarova
- Institute of Cancer and Genomic Sciences, Centre for Computational Biology, University of Birmingham, 6 Mindelsohn Way, Birmingham, B15 2SY, UK
| | - H Wright
- University Hospital of North Midlands NHS Trust, Newcastle Rd, Stoke-on-Trent, ST4 6QG, UK
| | - A Parrott
- Keele University School of Medicine, Newcastle Road, Stoke-on-Trent, ST4 6QG, UK
| | - S Nayak
- University Hospital of North Midlands NHS Trust, Newcastle Rd, Stoke-on-Trent, ST4 6QG, UK.
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Nayak S, Greenspan SL. Cost-effectiveness of five versus ten years of alendronate treatment prior to drug holiday for women with osteoporosis. Osteoporos Int 2020; 31:1273-1282. [PMID: 32020265 PMCID: PMC8215100 DOI: 10.1007/s00198-019-05258-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/03/2019] [Indexed: 11/24/2022]
Abstract
UNLABELLED We performed a cost-effectiveness analysis comparing 5 versus 10 years of alendronate treatment prior to 5-year drug holiday for US postmenopausal women with hip BMD T-scores between - 2.5 and - 3.5. We found that for most postmenopausal women 5 years of treatment prior to drug holiday is the more effective and cost-effective option. INTRODUCTION We performed a cost-effectiveness analysis to compare 5 versus 10 years of alendronate treatment prior to 5-year drug holiday for postmenopausal osteoporotic women. METHODS We created an individual-level state-transition microsimulation model to compare 3 treatment strategies for US postmenopausal women with osteoporosis and femoral neck BMD T-scores between - 2.5 and - 3.5 at baseline: recurrent periods of 5 years of alendronate followed by 5 years of drug holiday (alendronate 5/5), recurrent periods of 10 years of alendronate followed by 5 years of drug holiday (alendronate 10/5), and no alendronate treatment. RESULTS Base-case analysis revealed for women initiating treatment at ages 50, 60, and 70, the alendronate 5/5 strategy dominated (was more effective and less costly than) the alendronate 10/5 strategy and no treatment. For women age 80, the alendronate 10/5 strategy dominated. When assuming a lower relative risk of nonvertebral fracture during years 6-10 of alendronate treatment than the base-case assumption, the alendronate 10/5 strategy became the most cost-effective strategy even at younger treatment initiation ages. Probabilistic sensitivity analysis results supported the base-case findings; for treatment initiation ages of 50, 60, and 70, the alendronate 5/5 strategy was favored, whereas for treatment initiation age of 80, the alendronate 10/5 strategy was favored; however, there was uncertainty in these findings. CONCLUSIONS After 5 years of alendronate treatment, younger postmenopausal women (ages 50-70) with osteoporosis would likely benefit from a drug holiday, whereas older women (age 80) are likely to benefit from treatment for 10 years before a drug holiday.
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Affiliation(s)
- S Nayak
- Berkeley Madonna, Inc., Berkeley, CA, USA.
| | - S L Greenspan
- School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
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Shenoi S, Nayak S, Munoli R, Chawla A. P-02-77 Clinical Profile of Patients Attending a Multidisciplinary Sexual Dysfunction Clinic at a Tertiary Care Hospital. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2020.04.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Fedotov AV, Altinbas Z, Belomestnykh S, Ben-Zvi I, Blaskiewicz M, Brennan M, Bruno D, Brutus C, Costanzo M, Drees A, Fischer W, Fite J, Gaowei M, Gassner D, Gu X, Halinski J, Hamdi K, Hammons L, Harvey M, Hayes T, Hulsart R, Inacker P, Jamilkowski J, Jing Y, Kewisch J, Kankiya P, Kayran D, Lehn R, Liaw CJ, Litvinenko V, Liu C, Ma J, Mahler G, Mapes M, Marusic A, Mernick K, Mi C, Michnoff R, Miller T, Minty M, Narayan G, Nayak S, Nguyen L, Paniccia M, Pinayev I, Polizzo S, Ptitsyn V, Rao T, Robert-Demolaize G, Roser T, Sandberg J, Schoefer V, Schultheiss C, Seletskiy S, Severino F, Shrey T, Smart L, Smith K, Song H, Sukhanov A, Than R, Thieberger P, Trabocchi S, Tuozzolo J, Wanderer P, Wang E, Wang G, Weiss D, Xiao B, Xin T, Xu W, Zaltsman A, Zhao H, Zhao Z. Experimental Demonstration of Hadron Beam Cooling Using Radio-Frequency Accelerated Electron Bunches. Phys Rev Lett 2020; 124:084801. [PMID: 32167359 DOI: 10.1103/physrevlett.124.084801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/24/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
Cooling of beams of gold ions using electron bunches accelerated with radio-frequency systems was recently experimentally demonstrated in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Such an approach is new and opens the possibility of using this technique at higher energies than possible with electrostatic acceleration of electron beams. The challenges of this approach include generation of electron beams suitable for cooling, delivery of electron bunches of the required quality to the cooling sections without degradation of beam angular divergence and energy spread, achieving the required small angles between electron and ion trajectories in the cooling sections, precise velocity matching between the two beams, high-current operation of the electron accelerator, as well as several physics effects related to bunched-beam cooling. Here we report on the first demonstration of cooling hadron beams using this new approach.
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Affiliation(s)
- A V Fedotov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Z Altinbas
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Belomestnykh
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I Ben-Zvi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Blaskiewicz
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Brennan
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Bruno
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Brutus
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Costanzo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Drees
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Fischer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Fite
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Gaowei
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Gassner
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - X Gu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Halinski
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Hamdi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - L Hammons
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Harvey
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Hayes
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Hulsart
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Inacker
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Jamilkowski
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y Jing
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Kewisch
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Kankiya
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Kayran
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Lehn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C J Liaw
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Litvinenko
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Liu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Ma
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Mahler
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Mapes
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Marusic
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Mernick
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Mi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Michnoff
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Miller
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Minty
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Narayan
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Nayak
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - L Nguyen
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Paniccia
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I Pinayev
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Polizzo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Ptitsyn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Rao
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | | | - T Roser
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Sandberg
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Schoefer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Schultheiss
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Seletskiy
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Severino
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Shrey
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - L Smart
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Smith
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Song
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Sukhanov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Than
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Thieberger
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Trabocchi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Tuozzolo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Wanderer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E Wang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Wang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Weiss
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B Xiao
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Xin
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Xu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Zaltsman
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Zhao
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Z Zhao
- Brookhaven National Laboratory, Upton, New York 11973, USA
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Affiliation(s)
- S. Nayak
- Department of Nephrology St. John's Medical College Hospital Bangalore, India
| | - R. Satish
- Department of Nephrology St. John's Medical College Hospital Bangalore, India
| | - Gokulnath
- Department of Nephrology St. John's Medical College Hospital Bangalore, India
| | - J. Savio
- Department of Microbiology St. John's Medical College Hospital Bangalore, India
| | - T. Rajalakshmi
- Department of Pathology St. John's Medical College Hospital Bangalore, India
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17
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Affiliation(s)
- S Nayak
- Berkeley Madonna, Inc., 1135 Spruce St., Berkeley, CA, 94707-2629, USA.
| | - S L Greenspan
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Nayak S, Avery A, Griffiss JM, Charles C, Culwell K. A randomized placebo-controlled pilot study of the effect and duration of Amphora, a multipurpose vaginal pH regulator, on vaginal pH. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog5058.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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19
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Lazado CC, Nayak S, Khozin-Goldberg I, Zilberg D. The gut mucosal barrier of zebrafish (Danio rerio) responds to the time-restricted delivery of Lobosphaera incisa-enriched diets. Fish Shellfish Immunol 2019; 89:368-377. [PMID: 30965086 DOI: 10.1016/j.fsi.2019.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 06/09/2023]
Abstract
Recent studies in mammalian models revealed compelling evidence that along with the intrinsic characteristics of diets, the time of their delivery could have a profound impact on their benefits. In this study, we explored a time-dependent modulation of the gut mucosal barrier by delivering diets enriched with the green microalga (Lobosphaera incisa) either in a time-restricted regime or randomly to zebrafish (Danio rerio). The basal diet was enriched with microalgal biomass through two inclusion levels (i.e., 10% and 15% w/w), and the feeding trial lasted for six weeks. The control group was fed with the basal diet. After collection of tissue samples at week 6, the remaining fish were challenged by intraperitoneal injection of Streptococcus inaie. A histological analysis of the gut structure revealed that the fish that received the microalgae randomly exhibited shorter villi length. Genes coding for immunity were modulated in the gut by dietary treatments. Notably, the transcript levels of lysozyme, β-defensin and hepcidin were significantly higher in the group subjected to the time-restricted feeding regime. Dietary microalgae affected the fatty acid content in the gut, particularly the level of arachidonic acid (ARA), and the time-restricted feeding influenced its accumulation. Groups that received diets enriched with 15% microalgae, regardless of the feeding strategy, displayed a significantly higher resistance to S. inaie 16 days post-infection, though differences between the delivery strategies were pronounced during the early stage of infection. In conclusion, the dietary inclusion of L. incisa modulated some of the features of the gut mucosal barrier of zebrafish, and the time of delivery appeared to have a considerable influence on immunomodulatory functions.
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Affiliation(s)
- Carlo C Lazado
- The French Associates Institute for Agriculture and Biotechnology of Drylands, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel; Nofima, Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
| | - Sagar Nayak
- The French Associates Institute for Agriculture and Biotechnology of Drylands, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel
| | - Inna Khozin-Goldberg
- The French Associates Institute for Agriculture and Biotechnology of Drylands, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel
| | - Dina Zilberg
- The French Associates Institute for Agriculture and Biotechnology of Drylands, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel.
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20
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Nayak S, Cross M, Brooks S, Bible P, Jiang K, Dell'Orso S, Gutierrez-Cruz G, Naz F, Sun H, Morasso M. 312 Epigenetic modules governing skin epidermal homeostasis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Uchiyama A, Nayak S, Nayak S, Cross M, Overmiller A, Grassini D, Sawaya A, Gutkind J, Brooks S, Morasso M. 930 SOX2 epidermal overexpression promotes cutaneous wound healing via activation of EGFR/MEK/ERK signaling mediated by EGFR ligands. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Nayak S, Greenspan SL. A systematic review and meta-analysis of the effect of bisphosphonate drug holidays on bone mineral density and osteoporotic fracture risk. Osteoporos Int 2019; 30:705-720. [PMID: 30623214 PMCID: PMC6499675 DOI: 10.1007/s00198-018-4791-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/19/2018] [Accepted: 11/25/2018] [Indexed: 10/27/2022]
Abstract
UNLABELLED We performed a systematic review on the effect of drug holidays (discontinuation) on bone mineral density (BMD) and fracture risk. Bisphosphonate discontinuation may be considered for women who do not have low hip BMD after 3-5 years of initial treatment, while women who have low hip BMD may benefit from treatment continuation. INTRODUCTION We performed a systematic review and meta-analysis on the effect of drug holidays (discontinuation) on BMD and fracture risk. METHODS We searched PubMed, Embase, and Cochrane Library databases to locate controlled clinical trials and cohort studies evaluating the effect of drug holidays/discontinuation versus osteoporosis treatment continuation. We performed random-effects meta-analyses of hazard ratios of hip and any clinical osteoporotic fracture for individuals who discontinued bisphosphonates compared to persistent users. RESULTS Thirteen records reporting results from eight different studies met inclusion criteria. The FLEX study found a reduced clinical vertebral fracture risk with 10 years of alendronate therapy compared to 5 (RR 0.45, 95% CI 0.24-0.85), and the HORIZON extension studies found a reduced risk of morphometric vertebral fracture with 6 years of zoledronic acid therapy compared to 3 (OR = 0.51, 95% CI 0.26-0.95); subgroup analyses showed that women with low hip BMD T-scores after the initial treatment period benefitted from continued treatment in terms of reduced vertebral fracture risk. Meta-analysis of adjusted hazard ratios of hip and any clinical osteoporotic fracture for women who discontinued bisphosphonates revealed no significant differences in the risk of hip fracture (summary estimate of HR 1.09, 95% CI 0.87-1.37) or any clinical fracture (summary estimate of HR 1.13, 95% CI 0.75-1.70) compared to persistent users. CONCLUSIONS Bisphosphonate discontinuation may be considered for women who do not have low hip BMD after 3 to 5 years of initial treatment, while women who have low hip BMD may benefit from treatment continuation.
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Affiliation(s)
- S Nayak
- Berkeley Madonna, Inc., 1135 Spruce St., Berkeley, CA, 94707-2629, USA.
| | - S L Greenspan
- University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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23
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Anees M, Nayak S, Afarinkia K, Vinader V. Control of the stereochemistry of C14 hydroxyl during the total synthesis of withanolide E and physachenolide C. RSC Adv 2018; 8:39691-39695. [PMID: 35558026 PMCID: PMC9091292 DOI: 10.1039/c8ra08540d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/16/2018] [Indexed: 11/24/2022] Open
Abstract
The stereochemical outcome of the epoxidation of Δ14–15 cholestanes with mCPBA is controlled by the steric bulk of a C17 substituent. When the C17 is in the β configuration, the epoxide is formed in the α face, whereas if the C17 is trigonal (flat) or the substituent is in the α configuration, the epoxide is formed in the β face. The presence of a hydroxyl substituent at C20 does not influence the stereochemical outcome of the epoxidation. The epoxide configuration in oxidation of C14–C15 alkenes is determined by the configuration of the C17 substituent.![]()
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Affiliation(s)
- M Anees
- Institute of Cancer Therapeutics, University of Bradford Bradford BD7 1DP UK
| | - S Nayak
- School of Chemistry & Biosciences, University of Bradford Bradford BD7 1DP UK
| | - K Afarinkia
- Institute of Cancer Therapeutics, University of Bradford Bradford BD7 1DP UK
| | - V Vinader
- Institute of Cancer Therapeutics, University of Bradford Bradford BD7 1DP UK
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24
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Patel M, Lakhani G, Ghosh S, Nayak S, Roy B, Baghel R, Jain A. Effect of Body Condition Score on Milk Production, Milk Composition and Reproductive Performance of Lactating Murrah Buffaloes. ACTA ACUST UNITED AC 2018. [DOI: 10.20546/ijcmas.2018.711.140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Nayak S, Khozin-Goldberg I, Cohen G, Zilberg D. Dietary Supplementation With ω6 LC-PUFA-Rich Algae Modulates Zebrafish Immune Function and Improves Resistance to Streptococcal Infection. Front Immunol 2018; 9:1960. [PMID: 30237797 PMCID: PMC6135890 DOI: 10.3389/fimmu.2018.01960] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/08/2018] [Indexed: 11/13/2022] Open
Abstract
Arachidonic acid (ARA, 20:4n-6) and dihomo-γ-linolenic acid (DGLA, 20:3n-6) are omega-6 long-chain polyunsaturated fatty acids (LC-PUFA), which are key precursors for lipid mediators of the immune system and inflammatory response. The microalga Lobosphaera incisa (WT) and its Δ5-desaturase mutant P127 (MUT) are unique photosynthetic sources for ARA and DGLA, respectively. This study explores the effect of dietary supplementation with L. incisa and P127 biomass on tissue fatty acid composition, immune function, and disease resistance in zebrafish (Danio rerio). The broken microalgal biomass was added to commercial fish feed at 7.5 and 15% (w/w), providing 21.8 mg/g feed ARA for the WT-supplemented group and 13.6 mg/g feed DGLA for the MUT-supplemented group at the 15% inclusion levels. An unsupplemented group was used as the control. After 1 month of feeding, fish were challenged with Streptococcus iniae. Fish were sampled before the challenge and 1 week after the challenge for various analyses. Tissue ARA and DGLA levels significantly increased in the liver, corresponding to microalgal supplementation levels. The elevated expression of specific immune-related genes was evident in the kidneys in all treatment groups after 1 month of feeding, including genes related to eicosanoid synthesis, lysozyme, and NF-κB. In the liver, microalgal supplementation led to the upregulation of genes related to immune function and antioxidant defense while the expression of examined genes involved in ARA metabolism was downregulated. Importantly, fish fed with 15% of both WT- and MUT-supplemented feed showed significantly (p < 0.05) higher survival percentages (78 and 68%, respectively, as compared to only 46% in the control group). The elevated expression of genes related to inflammatory and immune responses was evident post-challenge. Collectively, the results of the current study demonstrate the potential of microalgae-derived dietary ARA and DGLA in improving immune competence and resistance to bacterial infection in zebrafish as a model organism.
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Affiliation(s)
- Sagar Nayak
- The French Associates Institute for Agriculture and Biotechnology for Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Inna Khozin-Goldberg
- The French Associates Institute for Agriculture and Biotechnology for Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Guy Cohen
- The Skin Research Institute, Dead Sea and Arava Science Center, Masada, Israel
| | - Dina Zilberg
- The French Associates Institute for Agriculture and Biotechnology for Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
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26
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Panda P, Nayak S, Bhakta S, Mohapatra S, Murthy TR. Design and synthesis of (Z/E)-2-phenyl/H-3-styryl-2H-chromene derivatives as antimicrotubule agents. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1520-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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27
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Griffiss J, Avery A, Nayak S, Friend D, Culwell K. Post hoc analysis of a randomized placebo-controlled pilot study on the effect of Amphora®, an acid-buffering vaginal gel, on vaginal pH by baseline vaginal pH level. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Das S, Nayak G, Nayak S. Osteogenesis imperfecta – a rare case report. J ANAT SOC INDIA 2018. [DOI: 10.1016/j.jasi.2018.06.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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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] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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30
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Nayak S, Portugal I, Zilberg D. Analyzing complement activity in the serum and body homogenates of different fish species, using rabbit and sheep red blood cells. Vet Immunol Immunopathol 2018; 199:39-42. [PMID: 29678228 DOI: 10.1016/j.vetimm.2018.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 03/18/2018] [Accepted: 03/21/2018] [Indexed: 10/17/2022]
Abstract
Alternative complement activity was determined in whole body homogenates (WBHs) and serum samples of different fish species, by measuring the amount of sample that induces 50% hemolysis of red blood cells using the ACH50 assay (Alternative Complement pathway Hemolytic activity). Values of ACH50 obtained for serum samples were about two-fold higher when using rabbit red blood cells (RRBC), as compared to sheep red blood cells (SRBC). The increase in ACH50 when using RRBCs for WBH samples was 28, 7 and 4 folds for guppy, molly and zebrafish, respectively. Large variability in complement activity was evident between fish species for both serum and WBHs. Evaluating the effect of freeze-thaw cycles on complement revealed significant reduction in complement activity in all tested samples. Loss of activity following three freeze-thaw cycles amounted to 48-59% when serum was tested and over 95% loss in activity for WBH. To our knowledge, this is the first study where fish WBHs were used for assaying complement activity. Our results support the suitability of this method in evaluating complement activity in small fish species or larvae, where blood cannot be obtained, as long as samples can be tested upon first thawing.
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Affiliation(s)
- Sagar Nayak
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, 84990, Israel
| | - Isabel Portugal
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, 84990, Israel
| | - Dina Zilberg
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, 84990, Israel.
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31
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Prasad DS, Pradhan RP, Gaurav K, Chatterjee PP, Kaur I, Dash S, Nayak S. Analysing the critical success factors for implementation of sustainable supply chain management: an Indian case study. Decision 2018. [DOI: 10.1007/s40622-017-0171-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Affiliation(s)
- S Nayak
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - A Kataria
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - M K Sharma
- Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - A Rastogi
- Department of Pathology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - E Gupta
- Department of Virology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - A Singh
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - S C Tiwari
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
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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] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- S Nayak
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - M Sharma
- Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - A Kataria
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - S C Tiwari
- Department of Nephrology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - A Rastogi
- Department of Pathology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - A Mukund
- Department of Radiology, Institute of Liver and Biliary Sciences, New Delhi, India
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34
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Affiliation(s)
- A K Sahoo
- Department of Veterinary Surgery and Radiology, College of Veterinary Science and Animal Husbandry, OUAT, Bhubaneswar - 751 003, Odisha, India
| | - J K Das
- Department of Veterinary Surgery and Radiology, College of Veterinary Science and Animal Husbandry, OUAT, Bhubaneswar - 751 003, Odisha, India
| | - S Nayak
- Department of Veterinary Surgery and Radiology, College of Veterinary Science and Animal Husbandry, OUAT, Bhubaneswar - 751 003, Odisha, India
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35
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Nayak S, Koven W, Meiri I, Khozin-Goldberg I, Isakov N, Zibdeh M, Zilberg D. Dietary arachidonic acid affects immune function and fatty acid composition in cultured rabbitfish Siganus rivulatus. Fish Shellfish Immunol 2017; 68:46-53. [PMID: 28684322 DOI: 10.1016/j.fsi.2017.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/25/2017] [Accepted: 07/01/2017] [Indexed: 06/07/2023]
Abstract
The marbled spinefoot rabbitfish (Siganus rivulatus) is an economically valuable fish species that has potential for commercial production in aquaculture. To overcome challenges in its sustainable production, a formulated diet is required for imparting health and robustness. This study evaluates the effect of dietary supplementation with arachidonic acid (ARA; 20:4n-6) on growth, survival, immune function and fatty acid composition of red blood cells (RBCs) in rabbitfish. We conducted two feeding trials using juvenile fish (to evaluate growth and survival) and adults (to evaluate immune function and fatty acid incorporation). Fish were fed diets supplemented with three different levels of ARA (in % of total fatty acids): 0.6 (unsupplemented control), 2.6 (moderate) and 4.7 (high). The fish fed with moderate ARA levels exhibited improved (p < 0.05) growth over the control and the high ARA level groups. During an outbreak of Streptococcus iniae, fish fed with moderate ARA survived significantly (p < 0.05) better (89%) than the control and the high ARA groups (59% and 48%, respectively). Moderate ARA supplementation resulted in elevated lysozyme and complement levels in the plasma of rabbitfish. A significant increase in the total serum immunoglobulin levels was observed in both the medium and the high ARA level groups; however, a decrease in antiprotease activity was recorded in the supplemented groups as compared to the control. Fatty acid analysis in fish red blood cells revealed a significant (p < 0.05) increase in the proportion of ARA of total fatty acids in the groups fed with the medium and the high ARA level diets (9.5% and 11.2%, respectively, compared to 7.1% in the control). Concomitantly, there was a decrease in the proportion of eicosapentaenoic acid (EPA; 20:5n-3), dihomo-γ linolenic acid (DGLA; 20:3n-6) and several 18-carbon unsaturated fatty acids in these groups. In conclusion, ARA in rabbitfish feeds improved growth, survival as well as innate and acquired humoral immune functions. Thus ARA supplementation in the diet of this species could be a valuable step towards establishing the commercial culture of rabbitfish.
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Affiliation(s)
- Sagar Nayak
- The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel
| | - William Koven
- Israel Oceanographic and Limnological Research, National Centre for Mariculture, Eilat 8812, Israel
| | - Iris Meiri
- Israel Oceanographic and Limnological Research, National Centre for Mariculture, Eilat 8812, Israel
| | - Inna Khozin-Goldberg
- The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel
| | - Noah Isakov
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Mohammad Zibdeh
- Marine Science Station, University of Jordan/Yarmouk University, Aqaba, Jordan
| | - Dina Zilberg
- The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel.
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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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [Affiliation(s)] [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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Affiliation(s)
- Priyabrata Mukhi
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | | | - M Bhattacharjee
- Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
| | - K K Ray
- Metallurgical & Materials Engineering Department, Indian Institute of Technology, Kharagpur 721302, India
| | | | - A Arun
- Arya Vaidya Sala, Kottakkal 676503, Kerala, India
| | - R Sathyavathi
- School of Physics, University of Hyderabad, Hyderabad 500046, India
| | - R R Juluri
- Institute of Physics, Bhubaneswar 751005, India
| | - P V Satyam
- Institute of Physics, Bhubaneswar 751005, India
| | - Alok K Panda
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | - Ashis Biswas
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | - S Nayak
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India
| | | | - S Pratihar
- Department of Chemical Sciences, Tezpur University, 784028, India
| | - Sujit Roy
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751007, India.
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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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 02/07/2017] [Indexed: 12/01/2022]
Affiliation(s)
- KK Saraf
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - A Kumaresan
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - S Nayak
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - S Chhillar
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - L Sreela
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - S Kumar
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - UK Tripathi
- Theriogenology Lab; Animal Reproduction, Gynaecology & Obstetrics; National Dairy Research Institute; Karnal Haryana India
| | - TK Datta
- Animal Biotechnology Centre; National Dairy Research Institute; Karnal Haryana India
| | - TK Mohanty
- Artificial Breeding Research Centre; National Dairy Research Institute; Karnal Haryana India
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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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [Affiliation(s)] [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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Affiliation(s)
- K T Desai
- Department of Community Medicine, Surat Municipal Institute of Medical Education and Research, Surat, Gujarat, India
| | - F Patel
- Department of Community Medicine, Surat Municipal Institute of Medical Education and Research, Surat, Gujarat, India
| | - P B Patel
- Department of Community Medicine, Surat Municipal Institute of Medical Education and Research, Surat, Gujarat, India
| | - S Nayak
- Department of Community Medicine, Surat Municipal Institute of Medical Education and Research, Surat, Gujarat, India
| | - N B Patel
- Department of Community Medicine, Surat Municipal Institute of Medical Education and Research, Surat, Gujarat, India
| | - R K Bansal
- Department of Community Medicine, Surat Municipal Institute of Medical Education and Research, Surat, Gujarat, India
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Affiliation(s)
- D Lee
- PharmaTherapeutics Clinical Research, Pfizer Inc., Cambridge, MA, USA
| | - S Nayak
- Pharmacometrics, Global Innovative Pharma Business, Pfizer Inc., Cambridge, MA, USA
| | - S W Martin
- Pharmacometrics, Global Innovative Pharma Business, Pfizer Inc., Cambridge, MA, USA
| | - A C Heatherington
- PharmaTherapeutics Clinical Research, Pfizer Inc., Cambridge, MA, USA
| | - P Vicini
- Pharmacokinetics, Dynamics and Metabolism - New Biological Entities, Pfizer Inc., San Diego, CA, USA
| | - F Hua
- PharmaTherapeutics Clinical Research, Pfizer Inc., Cambridge, MA, USA
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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] [What about the content of this article? (0)] [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 Surg Rehabil 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Affiliation(s)
- S Nayak
- National Institute for the Orthopaedically Handicapped, Under Ministry of Social Justice and Empowerment, Government of India, B-T Road, Bon Hooghly, 700090 Kolkata, India.
| | - P K Lenka
- National Institute for the Orthopaedically Handicapped, Under Ministry of Social Justice and Empowerment, Government of India, B-T Road, Bon Hooghly, 700090 Kolkata, India
| | - A Equebal
- National Institute for the Orthopaedically Handicapped, Under Ministry of Social Justice and Empowerment, Government of India, B-T Road, Bon Hooghly, 700090 Kolkata, India
| | - A Biswas
- National Institute for the Orthopaedically Handicapped, Under Ministry of Social Justice and Empowerment, Government of India, B-T Road, Bon Hooghly, 700090 Kolkata, India
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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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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50
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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] [What about the content of this article? (0)] [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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