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Nair TS, Memon P, Tripathi S, Srivastava A, Sunny Kujur M, Singh D, Bhamare P, Yadav V, Kumar Srivastava V, Prasad Pallipamula S, Usmanova G, Kumar S. Implementing a quality improvement initiative for private healthcare facilities to achieve accreditation: experience from India. BMC Health Serv Res 2023; 23:802. [PMID: 37501069 PMCID: PMC10375635 DOI: 10.1186/s12913-023-09619-w] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 05/30/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND The Manyata program is a quality improvement initiative for private healthcare facilities in India which provided maternity care services. Under this initiative, technical assistance was provided to selected facilities in the states of Uttar Pradesh, Jharkhand and Maharashtra which were interested in obtaining 'entry level certification' under the National Accreditation Board for Hospitals and Healthcare Providers (NABH) for provision of quality services. This paper describes the change in quality at those Manyata-supported facilities when assessed by the NABH standards of care. METHODS Twenty-eight private-sector facilities underwent NABH assessments in the three states from August 2017 to February 2019. Baseline assessment (by program staff) and NABH assessment (by NABH assessors) findings were compared to assess the change in quality of care as per NABH standards of care. The reported performance gaps from NABH assessments were then also classified by thematic areas and suggested corrective actions based on program implementation experience. RESULTS The overall adherence to NABH standards of care improved from 9% in the baseline assessment to 80% in the NABH assessment. A total of 831 performance gaps were identified by the NABH assessments, of which documentation issues accounted for a majority (70%), followed by training (19%). Most performance gaps could be corrected either by revising existing documentation or creating new documentation (62%), or by orienting facility staff on various protocols (35%). CONCLUSION While the adherence of facilities to the NABH standards of care improved considerably, certain performance gaps remained, which were primarily related to documentation of facility policies and protocols and training of staff, and required corrective actions for the facilities to achieve NABH entry level certification.
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Affiliation(s)
- Tapas Sadasivan Nair
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Parvez Memon
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Sanjay Tripathi
- Jhpiego - an affiliate of Johns Hopkins University, Lucknow, Uttar Pradesh, India
| | - Ashish Srivastava
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Meshach Sunny Kujur
- Jhpiego - an affiliate of Johns Hopkins University, Ranchi, Jharkhand, India
| | - Deepti Singh
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Parag Bhamare
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Vikas Yadav
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Vineet Kumar Srivastava
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Suranjeen Prasad Pallipamula
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
| | - Gulnoza Usmanova
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India.
| | - Somesh Kumar
- Jhpiego - an affiliate of Johns Hopkins University, Prius Platinum, A Wing, 5th Floor, D3, P3B, Saket District Centre, Sector 6, Saket, New Delhi, Delhi, 110017, India
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Tripathi S, Mattioli P, Liguori C, Chiaravalloti A, Arnaldi D, Giancardo L. Brain Hemisphere Dissimilarity, a Self-Supervised Learning Approach for alpha-synucleinopathies prediction with FDG PET. Proc IEEE Int Symp Biomed Imaging 2023; 2023:10.1109/isbi53787.2023.10230560. [PMID: 37706192 PMCID: PMC10496490 DOI: 10.1109/isbi53787.2023.10230560] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Idiopathic Rem sleep Behavior Disorder (iRBD) is a significant biomarker for the development of alpha-synucleinopathies, such as Parkinson's disease (PD) or Dementia with Lewy bodies (DLB). Methods to identify patterns in iRBD patients can help in the prediction of the future conversion to these diseases during the long prodromal phase when symptoms are non-specific. These methods are essential for disease management and clinical trial recruitment. Brain PET scans with 18F-FDG PET radiotracers have recently shown promise, however, the scarcity of longitudinal data and PD/DLB conversion information makes the use of representation learning approaches such as deep convolutional networks not feasible if trained in a supervised manner. In this work, we propose a self-supervised learning strategy to learn features by comparing the brain hemispheres of iRBD non-convertor subjects, which allows for pre-training a convolutional network on a small data regimen. We introduce a loss function called hemisphere dissimilarity loss (HDL), which extends the Barlow Twins loss, that promotes the creation of invariant and non-redundant features for brain hemispheres of the same subject, and the opposite for hemispheres of different subjects. This loss enables the pre-training of a network without any information about the disease, which is then used to generate full brain feature vectors that are fine-tuned to two downstream tasks: follow-up conversion, and the type of conversion (PD or DLB) using baseline 18F-FDG PET. In our results, we find that the HDL outperforms the variational autoencoder with different forms of inputs.
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Affiliation(s)
- S Tripathi
- School of Biomedical Informatics, University of Texas Health Center at Houston, TX, USA
| | - P Mattioli
- Department of Neuroscience (DINOGMI), University of Genoa, Genoa, Italy
| | - C Liguori
- Department of Systems Medicine, University of Rome, Rome, Italy
- Sleep Medicine Center, Neurology Unit, University Hospital of Rome, Rome, Italy
| | - A Chiaravalloti
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
- IRCCS Neuromed, Pozzilli, Italy
| | - D Arnaldi
- Department of Neuroscience (DINOGMI), University of Genoa, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - L Giancardo
- School of Biomedical Informatics, University of Texas Health Center at Houston, TX, USA
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Kapadia V, Jindal S, Patel P, Tripathi S. A Study of Role of Medical Thoracoscopy in Undiagnosed Pleural Effusion. J Assoc Physicians India 2023; 71:11-12. [PMID: 37354470 DOI: 10.5005/japi-11001-0172] [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] [Subscribe] [Scholar Register] [Indexed: 06/26/2023]
Abstract
AIM AND OBJECTIVES b/pulli>To know the diagnostic yield of pleuroscopy (medical thoracoscopy) in cases of pleural effusions which remain undiagnosed after routine initial investigations.lili>To notice the different gross pleuroscopic findings during the procedure.lili>To observe various histopathological reports of pleural biopsy taken through medical thoracoscopy.lili>To know the various complications of pleuroscopy in patients undergoing this procedure.li/ulp! MATERIALS AND METHODS A total of 56 patients having undiagnosed pleural effusion were taken for study after informed written consent. All patients underwent medical thoracoscopy. The clinical, demographic, and radiological profile of patients was recorded. Gross pleuroscopic findings and histopathological reports of the pleural biopsy were noted. All patients were observed for any complications that occurred during or after the procedure. RESULT Diagnostic yield of thoracoscopy in the present study was 91.07% (malignant pleural effusion 75% and tuberculous pleuritis 12.5%). Adenocarcinoma was the commonest malignancy in 60.71% of patients amongst malignant pleural effusion in the present study. Very few complications were recorded. The most common postprocedure complication was subcutaneous emphysema (12.5%) followed by pneumothorax (10.78%). CONCLUSION Thoracoscopy gives excellent diagnostic yield in undiagnosed pleural effusion without major complications, and should be utilized wherever feasible.
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Affiliation(s)
- Vishakha Kapadia
- Associate Professor, Department of Pulmonary Medicine, Smt NHL Municipal Medical College; Corresponding Author
| | - Savita Jindal
- Associate Professor, Department of Pulmonary Medicine, AMC MET Medical College
| | | | - Sanjay Tripathi
- Professor and HOD, Department of Pulmonary Medicine, Smt NHL Municipal Medical College, Ahmedabad, Gujarat, India
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Jena R, Tripathi S, Taywade S, Yadav T, Bhargava P, Choudhary G, Sandhu A. Comparison of fdg pet-ct with conventional imaging in the staging of high-risk renal cancers and transitional cell carcinoma of bladder (COPPER-T): A prospective randomized controlled trial – trial protocol and initial short-term analysis of results. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00572-9] [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: 02/12/2023]
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Tripathi S, Murray A, Wischik C, Schelter B. Vascular risk factors affect different brain regions in people with Alzheimer’s disease. Eur Psychiatry 2022. [PMCID: PMC9566980 DOI: 10.1192/j.eurpsy.2022.851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Vascular risk factors including hypertension, diabetes and dyslipidaemia promote diverse pathological mechanisms in the brain leading to cerebral hypoperfusion and ultimately cognitive decline in people. Medial temporal, medial frontal and anterior cingulate atrophy has been closely associated with diabetes and medial temporal lobe atrophy is associated with hypertension in people with Alzheimer’s disease (AD). Objectives To assess if hypertension, diabetes and dyslipidaemia have differential effects on different brain locations using brain imaging in people with AD. Methods The current study is based on [18F] fluorodeoxyglucose- positron emission tomography (FDG-PET) data of 970 participants from two large Phase III multi-centre clinical trials of a novel tau aggregation inhibitor drug Leuco-Methylthioninium (LMTX)meeting research criteria for mild to moderate AD. Vascular risk factor data including hypertension, diabetes and dyslipidaemia were collected and quantification of FDG PET hypo-metabolism was done by calculating Standardized Uptake Value Ratio(SUVR). Results Hypertension, diabetes and dyslipidaemia were found to have differential effects on brain locations in people with AD. When people with hypertension, diabetes and dyslipidaemia were compared to those without, mean SUVR was increased significantly in both left and right parietal and occipital lobes and decreased in left and right anterior cingulate gyri in hypertensives. SUVR was significantly higher in both left and right temporal lobes in diabetics andlower in both left and right anterior cingulate gyri in people with dyslipidaemia. Conclusions Vascular risk factors including hypertension, diabetes and dyslipidaemia have differential effects on different brain regions, measured using SUVR analysis of FDG-PET. Disclosure The FDG-PET data was taken from participants of two large phase III clinical trials sponsored by TauRx Therapeutics (Singapore). TauRx Therapeutics has contributed towards my studentship during my PhD but the data related to drug used in the clinical tria
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Mishra P, Pandey R, Tripathi S, Dubey SK, Tripathi YB. Bronco T (Shirisadi kasaya), a polyherbal formulation prevents LPS induced septicemia in rats. Eur Rev Med Pharmacol Sci 2022; 26:1513-1523. [PMID: 35302196 DOI: 10.26355/eurrev_202203_28216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Here, Bronco T (BT), a polyherbal formulation developed in 1984 for treating asthma, has been repurposed against septicemia-induced ALI. MATERIALS AND METHODS Lipopolysaccharides (3 mg/kg BW) were injected intraperitoneally before 24 hours of surgery to assess the cardiorespiratory parameters, blood PaO2/FiO2 and MPO, pulmonary water content and histological changes in the lungs. The pentoxifylline (PTX) (25 mg/kg BW) was used as the positive control and given one hour before LPS. BT was given 3 hours (orally at different doses of 3, 1.5 and 0.75 g/kg BW) before LPS. RESULTS The LPS treated group showed significant bradypnea, hypotension and bradycardia, through elongated peaks (RR) and (MAP) respectively and finally death after 95 minutes of LPS injection. The PTX and BT (3 g/kg BW) pretreatment significantly prevented these changes (dose-dependent in the BT group). The survival in these groups was maintained up to 190 min after LPS. The Pentoxifylline showed a better response (75%) than Bronco T (72%). In both the treatments, a significant decrease in pulmonary water content and minimal neutrophil infiltration and intact alveoli-capillary membrane was seen in the transverse section (T.S) of the lungs. CONCLUSIONS Significant improvement was noted in survival time with lesser tissue damage and improved pulmonary function was observed by pre-treating with Bronco T in LPS induced septicemia.
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Affiliation(s)
- P Mishra
- Department of Medicinal Chemistry, Physiology, Cardiology and Kriya Sharir, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
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Bhatt P, Kapadia V, Rajguru N, Jindal S, Tripathi S. Role of Induction of Sputum in Various Respir atory Diseases of Infective Etiology. J Assoc Physicians India 2020; 68:90. [PMID: 32138499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
| | | | | | | | - Sanjay Tripathi
- Head of Department, AMC MET Medical College, Ahmedabad, Gujarat
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Tripathi S, Srivastava A, Memon P, Nair TS, Bhamare P, Singh D, Srivastava V. Quality of maternity care provided by private sector healthcare facilities in three states of India: a situational analysis. BMC Health Serv Res 2019; 19:971. [PMID: 31842926 PMCID: PMC6915998 DOI: 10.1186/s12913-019-4782-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/26/2019] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Better quality of care around the time of childbirth can significantly improve maternal and newborn survival. In countries like India, where the private sector contributes to a considerable proportion of institutional deliveries, it is important to assess the quality of maternity care offered by private sector healthcare facilities. This study seeks to fill that information gap by analysing baseline assessments conducted for the Manyata program, which aims to improve the quality of maternity care at private facilities. METHODS An observation checklist based on 16 clinical standards endorsed by the Federation of Obstetric and Gynaecological Societies of India (FOGSI) was used to assess 201 private sector healthcare facilities in Maharashtra, Jharkhand, and Uttar Pradesh. Data on facility characteristics came from profiles completed when facilities enrolled in Manyata. Differences in the mean number of standards met were analysed by facility characteristics and the availability of essential supplies. RESULTS Around half (47.1%) of all nursing staff engaged in maternity care services at these private healthcare facilities were under qualified. The mean number of clinical standards met by facilities was 3.2 (SD 2.4). Facilities with a monthly delivery load between 20 and 50 met a significantly higher number of standards, as did facilities that had more than 70% of essential supplies available. Both these factors were also significant in a multiple linear regression analysis. CONCLUSIONS The overall quality of maternity care in private healthcare facilities is poor in all three states, especially for clinical standards related to management of complications.
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Affiliation(s)
- Sanjay Tripathi
- Jhpiego an affiliate of Johns Hopkins University, Lucknow, Uttar Pradesh India
| | - Ashish Srivastava
- Jhpiego - an affiliate of Johns Hopkins University, Jhpiego, 29, Okhla Phase 3, New Delhi, India
| | - Parvez Memon
- Jhpiego an affiliate of Johns Hopkins University, Lucknow, Uttar Pradesh India
| | - Tapas Sadasivan Nair
- Jhpiego - an affiliate of Johns Hopkins University, Jhpiego, 29, Okhla Phase 3, New Delhi, India
| | - Parag Bhamare
- Jhpiego - an affiliate of Johns Hopkins University, Mumbai, Maharashtra India
| | - Dinesh Singh
- Jhpiego - an affiliate of Johns Hopkins University, Ranchi, Jharkhand India
| | - Vineet Srivastava
- Jhpiego - an affiliate of Johns Hopkins University, Jhpiego, 29, Okhla Phase 3, New Delhi, India
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Tripathi S, Nikhare A, Sharma G, Shea T, Albrecht H. Safety And Tolerability Of Extended-Release Guaifenesin In Patients With Cough, Thickened Mucus And Chest Congestion Associated With Upper Respiratory Tract Infection. Drug Healthc Patient Saf 2019; 11:87-94. [PMID: 31632154 PMCID: PMC6791405 DOI: 10.2147/dhps.s222109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 07/05/2019] [Accepted: 09/12/2019] [Indexed: 11/28/2022] Open
Abstract
PURPOSE An extended-release (ER) formulation of the expectorant guaifenesin has recently been launched in India for the treatment of productive cough accompanied by mucus (phlegm). Although the safety profile of ER guaifenesin marketed in the USA is well documented, there were limited safety data available in the Indian population. The aim of this study was to further elucidate the safety profile of ER guaifenesin in patients with acute upper respiratory tract infection (URTI). PATIENTS AND METHODS A prospective, post-marketing surveillance study enrolled 552 adults with cough, thickened mucus and chest congestion due to URTI, who took ER guaifenesin 1200 mg (Mucinex®, Reckitt Benckiser; two 600 mg tablets) every 12 hrs for 7 days. Adverse events (AEs) were recorded and questionnaires administered to patients and investigators. RESULTS A total of 29 treatment-emergent AEs were recorded in 28/552 patients, including gastrointestinal (n = 11), nervous system (n = 8), psychiatric (n = 3), respiratory, thoracic and mediastinal (n = 2), skin and subcutaneous tissue (n = 2), and general disorders (n = 3). All AEs were mild in severity and no serious AEs or deaths occurred. The majority of both patients and investigators were either satisfied or very satisfied with improvements in treatment outcomes. CONCLUSION This study found that ER guaifenesin was well tolerated and had a favorable safety profile in otherwise healthy patients suffering from symptoms of cough, thickened mucus and chest congestion associated with URTI. Registered trial NCT03725085 (ClinicalTrials.gov) and CTRI/2014/07/004730 (ctri.nic.in).
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Affiliation(s)
- Sanjay Tripathi
- Department of Pulmonary Medicine, Sheth LG General Hospital & AMC MET Medical College, Ahmedabad, India
| | - Ashish Nikhare
- Department of Pulmonology, Lata Mangeshkar Hospital, Nagpur, India
| | - Gaurav Sharma
- Regional Medical Affairs (South of Asia), Reckitt Benckiser, Haryana, India
| | - Tim Shea
- Global Medical - Respiratory, Reckitt Benckiser, Parsippany, NJ, USA
| | - Helmut Albrecht
- Department of Cellular Biology & Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
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Tripathi S, Ajit Kumar VK. Comparison of Morphologic Findings in Patients with Dextrocardia with Situs Solitus vs Situs Inversus: a Retrospective Study. Pediatr Cardiol 2019; 40:302-309. [PMID: 30334087 DOI: 10.1007/s00246-018-2007-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 10/09/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Studies on dextrocardia have been limited by low numbers. Hence, it is very difficult to find the most common diagnosis in patients with dextrocardia, who are seeking medical attention in tertiary care center. AIMS AND OBJECTIVE To identify the most common diagnostic pattern in patients with dextrocardia with different situs. METHODS It is a retrospective study with records dating back to up to last 21 years from a major tertiary care center in south India. All the patients with diagnosis of dextrocardia (defined as right-sided baso-apical axis of heart) will be included in the study. Segmental analysis will be done as defined previously. RESULTS There were total of n = 378 patients with dextrocardia, 43.3% were females and median age was 1 year while mean age was 7 years. Situs solitus was present in 43.1%, Situs inversus in 38.1%, and Situs ambiguus in 18.8%. In patients with situs solitus and dextrocardia, the most common diagnosis was congenitally corrected TGA ± PS/PA followed by Double outlet Right ventricle ± PS/PA; whereas in patients with Situs inversus and dextrocardia, the most common diagnosis was Double outlet Right ventricle ± PS/PA followed by normal hearts and Left to right shunts. CONCLUSION In patients with dextrocardia who are seeking medical advice in a tertiary care center, they are more likely to have situs solitus followed by situs inversus. In situs solitus atrio-ventricular discordance with right ventricular outflow obstruction is the most common lesion suggesting L-looping is the most predominant mechanism. In patients with situs inversus, DORV with RVOTO is the most common lesion.
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Affiliation(s)
- S Tripathi
- Department of Cardiology, SCTIMST, Thiruvananthapuram, India.
| | - V K Ajit Kumar
- Department of Cardiology, SCTIMST, Thiruvananthapuram, India
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Dua R, Kumari R, Yadav V, Ranjan M, Kumar S, Mishra M, Tripathi S. New combined assessment of chronic obstructive pulmonary disease : Utilization, pitfalls, and association with spirometry. Lung India 2019. [DOI: 10.4103/0970-2113.257721] [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: 11/04/2022] Open
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Rosen SA, Olson TJP, Peter SD, Ilyas S, Tripathi S. Robotic-assisted subtotal colectomy for synchronous colon cancers in a patient with indeterminate colitis - a video vignette. Colorectal Dis 2018; 20:1153-1154. [PMID: 30238595 DOI: 10.1111/codi.14426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 09/10/2018] [Indexed: 02/08/2023]
Affiliation(s)
- S A Rosen
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - T J P Olson
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - S D Peter
- Department of Radiology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - S Ilyas
- Department of Pathology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - S Tripathi
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
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Memon P, Nair T, Yadav V, Tripathi S. ISQUA18-2325Designing and Implementing Competency Based Certification Program to Improve Quality of Intra and Immediate Postpartum Care in Private Sector – Experience from India. Int J Qual Health Care 2018. [DOI: 10.1093/intqhc/mzy167.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tripathi S, Memon P, Kujur M, Nair T. ISQUA18-1439What it Takes to get Accreditation in Small Healthcare Organizations – Case Study from India. Int J Qual Health Care 2018. [DOI: 10.1093/intqhc/mzy167.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Introduction: Aneurysmal bone cysts of the hand are rare, and only few cases are reported in scientific literature. We report a case of aneurysmal bone cyst of 3rd metacarpal treated at our tertiary care hospital, Mumbai. Case Report: A 13-year-old young female presented with pain and progressive increase in swelling over the dorsum of the right hand for 7—months. There was pain and tenderness over 3rd metacarpal. There was painful restriction of movement at the metacarpophalangeal joints. Serial radiographic evaluation of the hand from May 2009 to October 2010 showed multilocular expansile lytic lesion with ballooning of 3rd metacarpal with increasing size. The patient was managed surgically with bone grafting. Histopathology section suggested fibrous septa enclosing hemorrhagic cystic space. Septa contained bony chips, spindle cell, inflammatory cell, and few scattered osteoclast. Diagnosis of aneurysmal bone cyst of 3rd metacarpal was made. The patient was followed up after 5 years with good radiological healing with pain-free and good range of motion, good grip strength without any recurrence. Conclusion: Aneurysmal bone cyst is a rare, rapidly growing, and destructive benign bone tumor. Many treatment modalities have been reported in literature including radiation, curettage and bone grafting, cryotherapy, and excision. However, controversy exists in the literature regarding optimal treatment. Due to its rarity in the hand, no evidence-based treatment regimen has been established. The patient can be managed surgically with bone grafting with good radiological healing with pain-free and good range of motion, good grip strength without any recurrence.
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Affiliation(s)
- Saurav Narayan Nanda
- Resident, Department of Orthopaedics & Trauma, Lilavati Hospital and Research Centre Mumbai, Maharashtra, India
| | - Sanjay Tripathi
- Resident, Department of Orthopaedics & Trauma, Lilavati Hospital and Research Centre Mumbai, Maharashtra, India
| | - Shaikh Muzammil Shiraz
- Resident, Department of Orthopaedics & Trauma, Lilavati Hospital and Research Centre Mumbai, Maharashtra, India
| | - Sudhir Warrier
- Consultant Orthopaedic Hand Surgeon, Lilavati Hospital and Research Centre Mumbai, Maharashtra, India
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Matar HE, Tripathi S, Miller DJ. Iliac crest apophyseal insufficiency avulsion fractures. Ann R Coll Surg Engl 2018; 100:e4-e6. [PMID: 29046079 PMCID: PMC5838676 DOI: 10.1308/rcsann.2017.0175] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2017] [Indexed: 11/22/2022] Open
Abstract
Iliac crest apophyseal avulsion fractures are rare injuries caused mainly through forceful contraction of attached muscles during high level sporting activities. We present the first case of a spontaneous iliac crest apophyseal avulsion insufficiency fracture in a patient with severe atopic eczema on oral steroids and review the relevant literature.
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Affiliation(s)
- H E Matar
- Department of Trauma and Orthopaedics, Leighton Hospital , Crewe
| | - S Tripathi
- Department of Trauma and Orthopaedics, Leighton Hospital , Crewe
| | - D J Miller
- Department of Trauma and Orthopaedics, Leighton Hospital , Crewe
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17
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Arora N, Tripathi S, Kumar P, Mondal P, Mishra A, Prasad A. Recent advancements and new perspectives in animal models for Neurocysticercosis immunopathogenesis. Parasite Immunol 2017; 39. [PMID: 28467600 DOI: 10.1111/pim.12439] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 03/22/2016] [Accepted: 04/25/2017] [Indexed: 02/06/2023]
Abstract
Neurocysticercosis (NCC), one of the most common parasitic diseases of the central nervous system, is caused by Taenia solium. This parasite involves two hosts, intermediate hosts (pig and human) and a definitive host (human) and has various stages in its complex life cycle (eggs, oncosphere, cysticerci and adult tapeworm). Hence, developing an animal model for T. solium that mimics its natural course of infection is quite challenging. We have reviewed here the animal models frequently used to study immunopathogenesis of cysticercosis and also discussed their usefulness for NCC studies. We found that researchers have used mice, rats, guinea pigs, dogs, cats and pigs as models for this disease with varying degrees of success. Mice and rats models have been utilized extensively for immunopathogenesis studies due to their relative ease of handling and abundance of commercially available reagents to study these small animal models. These models have provided some very exciting results for in-depth understanding of the disease. Of late, the experimentally/naturally infected swine model is turning out to be the best animal model as the disease progression closely resembles human infection in pigs. However, handling large experimental animals has its own challenges and limitations.
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Affiliation(s)
- N Arora
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - S Tripathi
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India.,Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - P Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - P Mondal
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - A Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - A Prasad
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
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18
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Maidul Haque S, De R, Tripathi S, Mukherjee C, Yadav AK, Bhattacharyya D, Jha SN, Sahoo NK. Effect of oxygen partial pressure in deposition ambient on the properties of RF magnetron sputter deposited Gd 2O 3 thin films. Appl Opt 2017; 56:6114-6125. [PMID: 29047804 DOI: 10.1364/ao.56.006114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/16/2017] [Indexed: 06/07/2023]
Abstract
Gadolinium oxide is an excellent optical material that offers high transmission in a wide wavelength range of 200-1600 nm and exhibits a high bulk refractive index of ∼1.80 at 550 nm. In the present study, a set of Gd2O3 thin films has been deposited on fused silica substrates by RF sputtering of a Gd2O3 target under various O2 to Ar flow ratios. The samples have been characterized by grazing incidence x-ray diffraction (GIXRD) to study the long range structural behavior, by GIXR to study density and surface roughness of the films, by atomic force microscopy measurements to study morphological properties, by Rutherford backscattering measurements for compositional studies, and by transmission spectrophotometry and spectroscopic ellipsometry techniques to study their optical properties. It has been observed that the films deposited with 10% oxygen partial pressure have low density, high surface roughness, and high void content, which results in a low value of refractive index of this film, and film quality improves as oxygen partial pressure is further increased. Extended x-ray absorption fine structure measurement with synchrotron radiation has also been employed to extract local structural information around Gd sites, which has in turn been used to explain some of the observed macroscopic properties of the films.
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19
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Sharma SK, Katoch K, Sarin R, Balambal R, Kumar Jain N, Patel N, Murthy KJR, Singla N, Saha PK, Khanna A, Singh U, Kumar S, Sengupta A, Banavaliker JN, Chauhan DS, Sachan S, Wasim M, Tripathi S, Dutt N, Jain N, Joshi N, Penmesta SRR, Gaddam S, Gupta S, Khamar B, Dey B, Mitra DK, Arora SK, Bhaskar S, Rani R. Efficacy and Safety of Mycobacterium indicus pranii as an adjunct therapy in Category II pulmonary tuberculosis in a randomized trial. Sci Rep 2017; 7:3354. [PMID: 28611374 PMCID: PMC5469738 DOI: 10.1038/s41598-017-03514-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [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: 01/17/2017] [Accepted: 04/28/2017] [Indexed: 11/09/2022] Open
Abstract
Prolonged treatment of tuberculosis (TB) often leads to poor compliance, default and relapse, converting primary TB patients into category II TB (Cat IITB) cases, many of whom may convert to multi-drug resistant TB (MDR-TB). We have evaluated the immunotherapeutic potential of Mycobacterium indicus pranii (MIP) as an adjunct to Anti-Tubercular Treatment (ATT) in Cat II pulmonary TB (PTB) patients in a prospective, randomized, double blind, placebo controlled, multicentric clinical trial. 890 sputum smear positive Cat II PTB patients were randomized to receive either six intra-dermal injections (2 + 4) of heat-killed MIP at a dose of 5 × 108 bacilli or placebo once in 2 weeks for 2 months. Sputum smear and culture examinations were performed at different time points. MIP was safe with no adverse effects. While sputum smear conversion did not show any statistically significant difference, significantly higher number of patients (67.1%) in the MIP group achieved sputum culture conversion at fourth week compared to the placebo (57%) group (p = 0.0002), suggesting a role of MIP in clearance of the bacilli. Since live bacteria are the major contributors for sustained incidence of TB, the potential of MIP in clearance of the bacilli has far reaching implications in controlling the spread of the disease.
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Affiliation(s)
| | - Kiran Katoch
- National JALMA Institute of Leprosy and Other Mycobacterial Diseases (ICMR), Agra, India
| | - Rohit Sarin
- National Institute of Tuberculosis and Respiratory Diseases, New Delhi, India
| | - Raman Balambal
- National Institute of Research in Tuberculosis (ICMR), Chennai, India
| | - Nirmal Kumar Jain
- SMS Medical College (Hospital for Chest Diseases and TB), Jaipur, Rajasthan, India
| | - Naresh Patel
- NHL Municipal Medical College, Ahmadabad, Gujarat, India
| | | | - Neeta Singla
- National Institute of Tuberculosis and Respiratory Diseases, New Delhi, India
| | - P K Saha
- All India Institute of Medical Sciences, New Delhi, India
| | - Ashwani Khanna
- All India Institute of Medical Sciences, New Delhi, India
| | - Urvashi Singh
- All India Institute of Medical Sciences, New Delhi, India
| | - Sanjiv Kumar
- All India Institute of Medical Sciences, New Delhi, India
| | - A Sengupta
- All India Institute of Medical Sciences, New Delhi, India.,Chest Clinic and Hospital, New Delhi, India
| | - J N Banavaliker
- All India Institute of Medical Sciences, New Delhi, India.,RBTB Hospital, New Delhi, India
| | - D S Chauhan
- National JALMA Institute of Leprosy and Other Mycobacterial Diseases (ICMR), Agra, India
| | - Shailendra Sachan
- National JALMA Institute of Leprosy and Other Mycobacterial Diseases (ICMR), Agra, India
| | - Mohammad Wasim
- National JALMA Institute of Leprosy and Other Mycobacterial Diseases (ICMR), Agra, India
| | | | - Nilesh Dutt
- NHL Municipal Medical College, Ahmadabad, Gujarat, India
| | - Nitin Jain
- SMS Medical College (Hospital for Chest Diseases and TB), Jaipur, Rajasthan, India
| | - Nalin Joshi
- SMS Medical College (Hospital for Chest Diseases and TB), Jaipur, Rajasthan, India
| | | | - Sumanlatha Gaddam
- Mahavir Hospital and Research Centre, Hyderabad, Andhra Pradesh, India
| | - Sanjay Gupta
- Catalyst Clinical Services Pvt. Ltd., New Delhi, India
| | | | - Bindu Dey
- Department of Biotechnology, New Delhi, India
| | | | - Sunil K Arora
- Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | | | - Rajni Rani
- National Institute of Immunology, New Delhi, India. .,Systems Biology laboratory, CSIR-Institute of Genomics & Integrative Biology, New Delhi, India.
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20
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Mehra S, Mehra D, Tripathi S. Iatrogenically ruptured pulmonary hydatid cyst presenting as haemoptysis: a case report. Intern Med J 2017. [DOI: 10.1111/imj.10_13461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S Mehra
- Respiratory, Sleep and General Medicine, Royal Darwin Hospital; Darwin Northern Territory Australia
- Pulmonary Medicine; King George Medical University; Lucknow Uttar Pradesh India
| | - D Mehra
- Pathology; James Cook University; Townsville Queensland Australia
| | - S Tripathi
- Pulmonary Medicine; King George Medical University; Lucknow Uttar Pradesh India
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21
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Maidul Haque S, Tripathi S, Jha SN, Bhattacharyya D, Sahoo NK. EXAFS studies on Gd-doped ZrO 2 thin films deposited by RF magnetron sputtering. Appl Opt 2016; 55:7355-7364. [PMID: 27661374 DOI: 10.1364/ao.55.007355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
ZrO2 thin films with 0%, 7%, 9%, 11%, and 13% Gd doping have been prepared by RF magnetron sputtering and have been characterized by grazing incidence x-ray diffraction, spectroscopic ellipsometry, and optical transmission measurements to probe their structural and optical properties. Extended x-ray absorption fine structure (EXAFS) measurements have also been carried out on the samples at the Zr K- and Gd L3-edges. It has been observed that Gd goes to Zr sites up to 9%-11% doping concentration, and for Gd doping concentrations beyond 11%, Gd precipitates out as a separate Gd2O3 phase. The local structure information surrounding the Zr and Gd sites obtained from the analysis of the EXAFS studies have also been used to explain the macroscopic optical properties of the samples.
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22
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Trivedi S, Al-Nofal A, Kumar S, Tripathi S, Kahoud RJ, Tebben PJ. Severe non-infective systemic inflammatory response syndrome, shock, and end-organ dysfunction after zoledronic acid administration in a child. Osteoporos Int 2016; 27:2379-2382. [PMID: 26892041 DOI: 10.1007/s00198-016-3528-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/04/2016] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Zoledronic acid is an intravenous bisphosphonate used to increase bone mineral density and reduce the risk of fractures. Its safety profile compares well with pamidronate in pediatric patients. We describe an acute, severe, life-threatening, inflammatory reaction in a child. METHODS A 7-year-old boy with complex medical problems and chronic ventilator requirements was admitted to the pediatric intensive care unit (due to ventilator needs) for zoledronic acid infusion and subsequent monitoring. His history was significant for osteoporosis secondary to immobilization with multiple fractures since 2 years of age, hypoxic-ischemic encephalopathy, quadriplegic cerebral palsy, seizure disorder, ventilator dependence, and pulmonary hypertension. He had previously been treated with four cycles of pamidronate without adverse events. He received 0.013 mg/kg of zoledronic acid infused over 30 minutes. Beginning 3 hours after completion of the infusion, he developed progressive tachycardia, fever, hypotension requiring vasopressor infusion, and increasing oxygen requirements. Laboratory studies revealed leukopenia, thrombocytopenia, elevated C-reactive protein, abnormal coagulation profile, metabolic acidosis, and negative cultures. The following day, he developed moderate acute respiratory distress syndrome and pulmonary hemorrhage requiring higher ventilatory settings, and subsequently diarrhea and abdominal distension. Initial clinical resolution was noted from the third day onward, and he was discharged on the sixth day after zoledronate administration. RESULTS Our pediatric patient demonstrated an acute, severe, life-threatening reaction to zoledronic acid requiring intensive cardiorespiratory support without an underlying pre-existing inflammatory disorder. CONCLUSION Our case highlights the importance of careful monitoring of children following zoledronic acid therapy. We recommend inpatient observation after an initial infusion of zoledronic acid in medically complex children. Children and their parents should be thoroughly counseled on the potential risks of bisphosphonate treatment, which can sometimes be severe and life threatening.
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Affiliation(s)
- S Trivedi
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Critical Care, Mayo Clinic, Rochester, MN, USA
| | - A Al-Nofal
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Endocrinology, Mayo Clinic, Rochester, MN, USA
| | - S Kumar
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Endocrinology, Mayo Clinic, Rochester, MN, USA
| | - S Tripathi
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Critical Care, Mayo Clinic, Rochester, MN, USA
| | - R J Kahoud
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Critical Care, Mayo Clinic, Rochester, MN, USA
| | - P J Tebben
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Endocrinology, Mayo Clinic, Rochester, MN, USA.
- Departments of Medicine and Pediatric and Adolescent Medicine, Division of Endocrinology, Mayo Clinic, 200 First ST SW, Rochester, MN, 55905, USA.
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Borges TJ, O’Malley JT, Wo L, Murakami N, Smith B, Azzi J, Tripathi S, Lane JD, Bueno EM, Clark RA, Tullius SG, Chandraker A, Lian CG, Murphy GF, Strom TB, Pomahac B, Najafian N, Riella LV. Codominant Role of Interferon-γ- and Interleukin-17-Producing T Cells During Rejection in Full Facial Transplant Recipients. Am J Transplant 2016; 16:2158-71. [PMID: 26749226 PMCID: PMC4979599 DOI: 10.1111/ajt.13705] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 07/29/2015] [Revised: 12/23/2015] [Accepted: 12/27/2015] [Indexed: 01/25/2023]
Abstract
Facial transplantation is a life-changing procedure for patients with severe composite facial defects. However, skin is the most immunogenic of all transplants, and better understanding of the immunological processes after facial transplantation is of paramount importance. Here, we describe six patients who underwent full facial transplantation at our institution, with a mean follow-up of 2.7 years. Seum, peripheral blood mononuclear cells, and skin biopsy specimens were collected prospectively, and a detailed characterization of their immune response (51 time points) was performed, defining 47 immune cell subsets, 24 serum cytokines, anti-HLA antibodies, and donor alloreactivity on each sample, producing 4269 data points. In a nonrejecting state, patients had a predominant T helper 2 cell phenotype in the blood. All patients developed at least one episode of acute cellular rejection, which was characterized by increases in interferon-γ/interleukin-17-producing cells in peripheral blood and in the allograft's skin. Serum monocyte chemotactic protein-1 level was significantly increased during rejection compared with prerejection time points. None of the patients developed de novo donor-specific antibodies, despite a fourfold expansion in T follicular helper cells at 1 year posttransplantation. In sum, facial transplantation is frequently complicated by a codominant interferon-γ/interleukin-17-mediated acute cellular rejection process. Despite that, medium-term outcomes are promising with no evidence of de novo donor-specific antibody development.
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Affiliation(s)
- T. J. Borges
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - J. T. O’Malley
- Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - L. Wo
- Division of Plastic Surgery, Department of Surgery, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - N. Murakami
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - B. Smith
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - J. Azzi
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - S. Tripathi
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - J. D. Lane
- Division of Plastic Surgery, Department of Surgery, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - E. M. Bueno
- Division of Plastic Surgery, Department of Surgery, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - R. A. Clark
- Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - S. G. Tullius
- Division of Transplant Surgery, Department of Surgery, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - A. Chandraker
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - C. G. Lian
- Program in Dermatopathology, Department of Pathology, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - G. F. Murphy
- Program in Dermatopathology, Department of Pathology, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - T. B. Strom
- Transplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - B. Pomahac
- Division of Plastic Surgery, Department of Surgery, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA
| | - N. Najafian
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA,Department of Nephrology, Cleveland Clinic Florida, Weston, FL
| | - L. V. Riella
- Schuster Transplantation Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA,Corresponding author: Leonardo V. Riella,
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Menon JC, Joseph JK, Jose MP, Punde D, Mazumdar DB, Bawaskar HS, Pillay VV, Mohapatra BN, Rajendiran C, Tanwar PD, Raut S, Ragunanthatan S, Tripathi S. Management protocol of venomous snakebite in India: a consensus statement. TOXIN REV 2016. [DOI: 10.1080/15569543.2016.1185735] [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] [Indexed: 10/21/2022]
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25
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Redda YT, Venkatesh G, Kalaiyarasu S, Bhatia S, Kumar DS, Nagarajan S, Pillai A, Tripathi S, Kulkarni DD, Dubey SC. Expression and purification of recombinant H5HA1 protein of H5N1 avian influenza virus in E. coli and its application in indirect ELISA. J Immunoassay Immunochem 2016; 37:346-58. [PMID: 26829111 DOI: 10.1080/15321819.2015.1135160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The PCR amplified HA1 fragment of H5N1 (H5HA1) avian influenza virus (AIV) hemagglutinin gene was cloned into pET28a (+) expression vector and expressed in Rosetta Blue (DE3) pLysS cells. The recombinant H5HA1 (rH5HA1) protein purified by passive gel elution after SDS-PAGE of the inclusion bodies reacted specifically with H5N1 serum in Western blot analysis. A subtype specific indirect enzyme linked immunosorbent assay (iELISA) using the rH5HA1 protein as the coating antigen was developed for detecting antibodies to H5 subtype of AIV. The assay had 89.04% sensitivity and 95.95% specificity when compared with haemagglutination inhibition test. The Kappa value of 0.842 indicated a perfect agreement between the tests. The iELISA developed can be used for serosurveillance of avian influenza in chickens.
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Affiliation(s)
- Y T Redda
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - G Venkatesh
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Kalaiyarasu
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Bhatia
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - D Senthil Kumar
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Nagarajan
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - A Pillai
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Tripathi
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - D D Kulkarni
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S C Dubey
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
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Fatima A, Kulkarni VK, Banda NR, Agrawal AK, Singh B, Sarkar PS, Tripathi S, Shripathi T, Kashyap Y, Sinha A. Non-destructive evaluation of teeth restored with different composite resins using synchrotron based micro-imaging. J Xray Sci Technol 2016; 24:119-132. [PMID: 26890899 DOI: 10.3233/xst-160530] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Application of high resolution synchrotron micro-imaging in microdefects studies of restored dental samples. OBJECTIVE The purpose of this study was to identify and compare the defects in restorations done by two different resin systems on teeth samples using synchrotron based micro-imaging techniques namely Phase Contrast Imaging (PCI) and micro-computed tomography (MCT). With this aim acquired image quality was also compared with routinely used RVG (Radiovisiograph). METHODS Crowns of human teeth samples were fractured mechanically involving only enamel and dentin, without exposure of pulp chamber and were divided into two groups depending on the restorative composite materials used. Group A samples were restored using a submicron Hybrid composite material and Group B samples were restored using a Nano-Hybrid restorative composite material. Synchrotron based PCI and MCT was performed with the aim of visualization of tooth structure, composite resin and their interface. RESULTS The quantitative and qualitative comparison of phase contrast and absorption contrast images along with MCT on the restored teeth samples shows comparatively large number of voids in Group A samples. CONCLUSIONS Quality assessment of dental restorations using synchrotron based micro-imaging suggests Nano-Hybrid resin restorations (Group B) are better than Group A.
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Affiliation(s)
- A Fatima
- UGC- DAE Consortium for Scientific Research, University Campus, Indore (M.P.), India
| | - V K Kulkarni
- Department of Pedodontics and Preventive Dentistry, Modern Dental College, Indore (M.P.), India
| | - N R Banda
- Department of Pedodontics and Preventive Dentistry, Modern Dental College, Indore (M.P.), India
| | - A K Agrawal
- Neutron & X-ray Physics Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - B Singh
- Neutron & X-ray Physics Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - P S Sarkar
- Neutron & X-ray Physics Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - S Tripathi
- UGC- DAE Consortium for Scientific Research, University Campus, Indore (M.P.), India
| | - T Shripathi
- UGC- DAE Consortium for Scientific Research, University Campus, Indore (M.P.), India
| | - Y Kashyap
- Neutron & X-ray Physics Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - A Sinha
- Neutron & X-ray Physics Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
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Jain SM, Tripathi S, Tripathi S, Spoto G, Edvinsson T. Acid-catalyzed oligomerization via activated proton transfer to aromatic and unsaturated monomers in Nafion membranes: a step forward in the in situ synthesis of conjugated composite membranes. RSC Adv 2016. [DOI: 10.1039/c6ra23105e] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An approach to perform a controlled acid-catalyzed oligomerization via vapor pressure control of reactions inside Nafion membranes is presented.
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Affiliation(s)
- Sagar Motilal Jain
- Uppsala University
- Department of Chemistry – Ångström Laboratory
- Physical Chemistry
- SE 751 20 Uppsala
- Sweden
| | - Sapana Tripathi
- Max Planck Institute for Intelligent Systems
- Department Magnetic Materials
- 70569 Stuttgart
- Germany
| | - Sanjay Tripathi
- Mahakal Institute of Technology and Management
- Dept. of Mechanical Engineering
- 456664 Ujjain
- India
| | - Giuseppe Spoto
- Department of Chemistry
- NIS (Nanostructured Interfaces and Surfaces) Centre of Excellence
- University of Torino
- 10125 Torino
- Italy
| | - Tomas Edvinsson
- Department of Engineering Sciences – Solid State Physics
- Uppsala University
- SE 751 21 Uppsala
- Sweden
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Tripathi S. The Comparative Study of Life Assets among Thailand Secondary and High School Students for 2009 and 2013;Finding from the Nation Positive Youth Development Survey. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.150] [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: 11/13/2022] Open
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Patil Y, Khirwadkar S, Belsare S, Swamy R, Khan M, Tripathi S, Bhope K, Krishnan D, Mokaria P, Patel N, Antwala I, Galodiya K, Mehta M, Patel T. Performance of straight tungsten mono-block test mock-ups using new high heat flux test facility at IPR. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.04.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tripathi S, Nunez DJ, Katyal C, Ushay HM. Plan to Have No Unplanned: A Collaborative, Hospital-Based Quality-Improvement Project to Reduce the Rate of Unplanned Extubations in the Pediatric ICU. Respir Care 2015; 60:1105-12. [PMID: 25989811 PMCID: PMC10044263 DOI: 10.4187/respcare.03984] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Although under-reported and understudied, unplanned extubations carry a significant risk of patient harm and even death. They are an important yardstick of quality control of care of intubated patients in the ICU. A unit-based risk assessment and multidisciplinary approach is required to decrease the incidence of unplanned extubations. METHODS As part of a quality-improvement initiative of Children's Hospital at Montefiore, all planned and unplanned extubations in a multidisciplinary 20-bed pediatric ICU were evaluated over a 12-month period (January to December 2010). At the end of 6 months, an interim analysis was performed, and high-risk patient groups and patient care factors were identified. These factors were targeted in the second phase of the project. RESULTS Over this period, there were a total of 267 extubations, of which 231 (87%) were planned extubations and 36 (13%) were unplanned. A patient care policy targeting the risk factors was instituted, along with extensive nursing and other personnel education in the second phase. As a result of this intervention, the unplanned extubation rate in the pediatric ICU decreased from 3.55 to 2.59/100 intubation days. All subjects who had an unplanned extubation during nursing procedures or transport required re-intubation, whereas none of the unplanned extubations during ventilator weaning required re-intubation. CONCLUSIONS A targeted approach based on unit-specific risk factors is most effective in quality-improvement projects. A specific policy for sedation and weaning can be very helpful in managing intubated patients and preventing unintended harm.
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Gleich SJ, Nemergut ME, Stans AA, Haile DT, Feigal SA, Heinrich AL, Bosley CL, Ward JW, Tripathi S. Lean Six Sigma handoff process between operating room and pediatric ICU: improvement in patient safety, efficiency and effectiveness. Crit Care 2015. [PMCID: PMC4472799 DOI: 10.1186/cc14603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Khanna R, Pandey RK, Tripathi S. Effect of intermaxillary tooth-size discrepancy on accuracy of prediction equations for mixed dentition space analysis. Eur Arch Paediatr Dent 2014; 16:211-7. [PMID: 25373496 DOI: 10.1007/s40368-014-0157-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 10/08/2014] [Indexed: 11/29/2022]
Abstract
AIM Correlation-statistical methods are widely used for prediction of size of unerupted permanent canines and premolars in mixed dentition space analysis. The present study was planned to evaluate the effect of selecting dental study casts with no intermaxillary tooth-size discrepancy on the accuracy of predicting mesiodistal widths (MDWS) of permanent canines and premolars. STUDY DESIGN Bolton ratios were calculated for all the screened study dental casts fulfilling the inclusion criteria. Subjects were divided into two groups. Group A: all subjects with no intermaxillary tooth-size discrepancy within ±2 SD (Standard deviation) of the mean values. Group B: increased percentage of subjects with intermaxillary tooth-size discrepancy beyond ±2 SD (Standard deviation) of the mean values. STATISTICS Linear regression equations were established for both maxilla and mandible in both the groups, with different tooth combinations as independent variables. Validation of best possible regression equations was done on an independent set of 40 subjects. The actual and predicted values of MDWS of permanent canines and premolars were compared by paired samples t test in both groups, for both arches. RESULTS The accuracy of equations derived from group A was higher than those derived from group B. The difference between actual and predicted values was statistically insignificant in group A and statistically significant in group B. CONCLUSION The results confirm the accuracy of simple linear regression equations derived from a sample of children with no intermaxillary tooth-size discrepancy.
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Affiliation(s)
- R Khanna
- Department of Paediatric and Preventive Dentistry, King George's Medical University, Lucknow, 226003, Uttar Pradesh, India,
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Harcourt J, Virk J, Randhawa P, Tripathi S, Kwasa E, Mendoza N. Tumor Resection Volumes and Facial Nerve Outcomes for Vestibular Schwannomas. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384008] [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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Tripathi S, Graner K, Fryer K, Arteaga G. Role of pharmacist in multidisciplinary pediatric intensive care rounds: a retrospective descriptive study. Crit Care 2014. [PMCID: PMC4068231 DOI: 10.1186/cc13193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Banerjee C, Dudwadkar N, Tripathi S, Gandhi P, Kaushik CP, Chakraborty S, Ayyub P, Tyagi AK. Retracted Article: Selective Uptake of Uranium,Plutonium and Americium on Hydrogen Titanate Nanotubes. RSC Adv 2014. [DOI: 10.1039/c3ra42548g] [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: 11/21/2022] Open
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Arteaga G, Tripathi S, Ouellette Y, Nemergut M, Rohlik G, Fryer K, Huskins C. Decreasing central-line blood draws by consolidation of phlebotomy timing: results of a quality improvement project. Crit Care 2014. [PMCID: PMC4068362 DOI: 10.1186/cc13277] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Tripathi S, Patel HM, Srivastava PK, Bafna AM. Assessment of water quality index of bore well water samples from some selected locations of South Gujarat, India. J Environ Sci Eng 2013; 55:456-465. [PMID: 25906591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The present study calculates the water quality index (WQI) of some selected sites from South Gujarat (India) and assesses the impact of industries, agriculture and human activities. Chemical parameters were monitored for the calculation of WQI of some selected bore well samples. The results revealed that the WQI of the some bore well samples exceeded acceptable levels due to the dumping of wastes from municipal, industrial and domestic sources and agricultural runoff as well. Inverse Distance Weighting (IDW) was implemented for interpolation of each water quality parameter (pH, EC, alkalinity, total hardness, chloride, nitrate and sulphate) for the entire sampled area. The bore water is unsuitable for drinking and if the present state of affairs continues for long, it may soon become an ecologically dead bore.
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Affiliation(s)
- S Tripathi
- Department of Agricultural Chemistry and Soil Science, N.M. College of Agriculture Navsari Agricultural University, Navsari-396 450, Gujarat, India
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Selot A, Tripathi J, Tripathi S, Aynyas M. Structural and photoluminescence study of Mn2+-activated CaYAl3 O7 blue phosphors. LUMINESCENCE 2013; 29:362-6. [PMID: 23881552 DOI: 10.1002/bio.2553] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 04/05/2013] [Accepted: 05/23/2013] [Indexed: 11/10/2022]
Abstract
The structural and photoluminescence properties of CaYAl3 O7 phosphor material doped with varying concentration of Mn(2+) have been studied. The phosphor material was synthesized by the combustion method at 500 °C and was characterized using X-ray diffraction, Fourier transform infrared spectroscopy and photoluminescence spectroscopy (PL). X-ray diffraction showed that the crystallites have average sizes in the range of ~58-70 nm. Corresponding Fourier transform infrared spectroscopy investigations confirm the phase formation and the presence of aluminate group (Al-O bands) in CaYAl3 O7 :Mn(2+) phosphor. Under the excitation at 356 nm wavelength, the PL spectra show the occurrence of two emission peaks obtained in the blue region at 389 nm and 412 nm, which is attributed to the 4 T1(G) → 6A1 transition of Mn(2+) ion. Upon increasing Mn(2+) concentration, the relative PL intensity shows an initial decrement followed by an increase displaying the effect of concentration quenching. Overall the results suggest the possibility of using this material in white lighting devices and plasma display panels.
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Affiliation(s)
- Anupam Selot
- Department of Physics, Sadhu Vaswani PG College, Bhopal, 462020, (M.P.), India
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Cisler JM, James GA, Tripathi S, Mletzko T, Heim C, Hu XP, Mayberg HS, Nemeroff CB, Kilts CD. Differential functional connectivity within an emotion regulation neural network among individuals resilient and susceptible to the depressogenic effects of early life stress. Psychol Med 2013; 43:507-518. [PMID: 22781311 DOI: 10.1017/s0033291712001390] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Early life stress (ELS) is a significant risk factor for depression. The effects of ELS exposure on neural network organization have not been differentiated from the effect of depression. Furthermore, many individuals exposed to ELS do not develop depression, yet the network organization patterns differentiating resiliency versus susceptibility to the depressogenic effects of ELS are not clear. METHOD Women aged 18-44 years with either a history of ELS and no history of depression (n = 7), a history of ELS and current or past depression (n = 19), or a history of neither ELS nor depression (n = 12) underwent a resting-state 3-T functional magnetic resonance imaging (fMRI) scan. An emotion regulation brain network consisting of 21 nodes was described using graph analyses and compared between groups. RESULTS Group differences in network topology involved decreased global connectivity and hub-like properties for the right ventrolateral prefrontal cortex (vlPFC) and decreased local network connectivity for the dorsal anterior cingulate cortex (dACC) among resilient individuals. Decreased local connectivity and increased hub-like properties of the left amygdala, decreased hub-like properties of the dACC and decreased local connectivity of the left vlPFC were observed among susceptible individuals. Regression analyses suggested that the severity of ELS (measured by self-report) correlated negatively with global connectivity and hub-like qualities for the left dorsolateral PFC (dlPFC). CONCLUSIONS These preliminary results suggest functional neural connectivity patterns specific to ELS exposure and resiliency versus susceptibility to the depressogenic effects of ELS exposure.
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Affiliation(s)
- J M Cisler
- Brain Imaging Research Center, Psychiatric Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
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Borisenko N, Chaurasia S, Dhareshwar L, Gromov A, Gupta N, Leshma P, Munda D, Orekhov A, Tripathi S, Merkuliev Y. Laser study into and explanation of the direct-indirect target concept. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135903014] [Citation(s) in RCA: 2] [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: 11/14/2022] Open
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Tripathi J, Tripathi S, Keller J, Das K, Shripathi T. Degradation study on structural and optical properties of annealed Rhodamine B doped poly(vinyl) alcohol films. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2012.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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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Rathi KR, Arora MM, Sahai K, Tripathi S, Singh SP, Raman DK, Anand KB. Autopsy findings in fatal dengue haemorrhagic fever - 06 Cases. Med J Armed Forces India 2012; 69:254-9. [PMID: 24600119 DOI: 10.1016/j.mjafi.2012.08.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [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: 09/04/2011] [Accepted: 08/12/2012] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND During recent outbreak of dengue fever in Delhi, there has been a significant increase in dengue-associated admission in hospitals. To better understand the pathology of dengue haemorrhagic fever, we conducted autopsies of dengue infections deaths within our hospital. METHOD This was an autopsy study of dengue-associated deaths at a large tertiary care hospital. RESULTS From Sep 2009 to Dec 2010, a total of 1032 patients with serological evidence of dengue infection were admitted to our hospital. There were twelve deaths and autopsies were conducted in six. Adult respiratory distress syndrome, bleeding diathesis, hypotension, hepatic failure and acute renal failure were the common causes of death despite early hospitalization, intravenous fluid, and blood-product support. CONCLUSION Dengue is associated with severe disease, and deaths do occur despite current supportive management. Early predictors of disease severity and better clinical interventions are needed.
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Affiliation(s)
- K R Rathi
- Senior Advisor (Path & Neuropath), Base Hospital, Delhi Cantt 10, India
| | - M M Arora
- Brig (Med), HQ 11 Corps, C/O 56 APO, India
| | - K Sahai
- Senior Advisor (Path & Oncopath), Base Hospital, Delhi Cantt 10, India
| | - S Tripathi
- Senior Advisor (Pathology), MH Kirkee, Pune 411020, India
| | - S P Singh
- Classified Specialist (Pathology & Micro), 7 Air Force Hosp, Kanpur, India
| | - D K Raman
- Classified Specialist (Pathology), AFTC Delhi Cantt 10, India
| | - K B Anand
- Graded Specialist (Pathology & Micro), INHS Ashvini, Colaba, Mumbai, India
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Abstract
Induction of molecular chimerism through genetic modification of bone marrow is a powerful tool for the induction of tolerance. Here we demonstrate for the first time that expression of an allogeneic MHC class II gene in autologous bone marrow cells, resulting in a state of molecular chimerism, induces tolerance to MHC class II mismatched skin grafts, a stringent test of transplant tolerance. Reconstitution of recipients with syngeneic bone marrow transduced with retrovirus encoding H-2I-Ab (I-Ab) resulted the long-term expression of the retroviral gene product on the surface of MHC class II-expressing bone marrow derived cell types. Mechanistically, tolerance was maintained by the presence of regulatory T cells, which prevented proliferation and cytokine production by alloreactive host T cells. Thus, the introduction of MHC class II genes into bone marrow derived cells through genetic engineering results in tolerance. These results have the potential to extend the clinical applicability of molecular chimerism for tolerance induction.
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Affiliation(s)
- P T Jindra
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
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Wright DB, Tripathi S, Sikarwar A, Santosh KT, Perez-Zoghbi J, Ojo OO, Irechukwu N, Ward JPT, Schaafsma D. Regulation of GPCR-mediated smooth muscle contraction: implications for asthma and pulmonary hypertension. Pulm Pharmacol Ther 2012; 26:121-31. [PMID: 22750270 DOI: 10.1016/j.pupt.2012.06.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 06/15/2012] [Accepted: 06/18/2012] [Indexed: 11/28/2022]
Abstract
Contractile G-protein-coupled receptors (GPCRs) have emerged as key regulators of smooth muscle contraction, both under healthy and diseased conditions. This brief review will discuss some key topics and novel insights regarding GPCR-mediated airway and vascular smooth muscle contraction as discussed at the 7th International Young Investigators' Symposium on Smooth Muscle (2011, Winnipeg, Manitoba, Canada) and will in particular focus on processes driving Ca(2+)-mobilization and -sensitization.
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Affiliation(s)
- D B Wright
- Department of Asthma, Allergy, and Lung Biology, King's College, London, United Kingdom
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Melzer MJ, Sugano JS, Cabanas D, Dey KK, Kandouh B, Mauro D, Rushanaedy I, Srivastava S, Watanabe S, Borth WB, Tripathi S, Matsumoto T, Keith L, Gonsalves D, Hu JS. First Report of Pepper mottle virus Infecting Tomato in Hawaii. Plant Dis 2012; 96:917. [PMID: 30727375 DOI: 10.1094/pdis-02-12-0147-pdn] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In August 2011, tomato (Solanum lycopersicum L.) fruit from a University of Hawaii field trial displayed mottling symptoms similar to that caused by Tomato spotted wilt virus (TSWV) or other tospoviruses. The foliage from affected plants, however, appeared symptomless. Fruit and leaf tissue from affected plants were negative for TSWV analyzed by double antibody sandwich (DAS)-ELISA and/or TSWV ImmunoStrips (Agdia, Elkhart, IN) when performed following the manufacturer's instructions. Total RNA from a symptomatic and an asymptomatic plant was isolated using an RNeasy Plant Mini Kit (Qiagen, Valencia, CA) and reverse transcribed using Invitrogen SuperScript III reverse transcriptase (Life Technologies, Grand Island, NY) and primer 900 (5'- CACTCCCTATTATCCAGG(T)16-3') following the enzyme manufacturer's instructions. The cDNA was then used as template in a universal potyvirus PCR assay using primers 900 and Sprimer, which amplify sequences encoding the partial inclusion body protein (NIb), coat protein, and 3' untranslated region of potyviruses (1). A ~1,700-bp product was amplified from the cDNA of the symptomatic plant but not the asymptomatic plant. This product was cloned using pGEM-T Easy (Promega, Madison, WI) and three clones were sequenced at the University of Hawaii's Advanced Studies in Genomics, Proteomics, and Bioinformatics laboratory. The 1,747-bp consensus sequence of the three clones was deposited in GenBank (Accession No. JQ429788) and, following primer sequence trimming, found to be 97% identical to positions 7,934 through 9,640 of Pepper mottle virus (PepMoV; family Potyviridae, genus Potyvirus) accessions from Korea (isolate '217' from tomato; EU586126) and California (isolate 'C' from pepper; M96425). To determine the incidence of PepMoV in the field trial, all 292 plants representing 14 tomato cultivars were assayed for the virus 17 weeks after planting using a PepMoV-specific DAS-ELISA (Agdia) following the manufacturer's directions. Plants were considered positive if their mean absorbance at 405 nm was greater than the mean absorbance + 3 standard deviations + 10% of the negative control samples. The virus incidence ranged from 4.8 to 47.6% for the different varieties, with an overall incidence of 19.9%. Although plant growth was not noticeably impaired by PepMoV infection, the majority of fruit from infected plants was unsaleable, making PepMoV a considerable threat to tomato production in Hawaii. PepMoV has been reported to naturally infect tomato in Guatemala (3) and South Korea (2). To our knowledge, this is the first report of this virus in Hawaii and the first report of this virus naturally infecting tomato in the United States. References: (1) J. Chen et al. Arch. Virol. 146:757, 2001. (2) M.-K. Kim et al. Plant Pathol. J. 24:152, 2008. (3) J. Th. J. Verhoeven et al. Plant Dis. 86:186, 2002.
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Affiliation(s)
- M J Melzer
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - J S Sugano
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - D Cabanas
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - K K Dey
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - B Kandouh
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - D Mauro
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - I Rushanaedy
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - S Srivastava
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - S Watanabe
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - W B Borth
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu96822
| | - S Tripathi
- USDA-ARS Pacific Basin Agricultural Research Center, Hilo, HI 96720
| | - T Matsumoto
- USDA-ARS Pacific Basin Agricultural Research Center, Hilo, HI 96720
| | - L Keith
- USDA-ARS Pacific Basin Agricultural Research Center, Hilo, HI 96720
| | - D Gonsalves
- USDA-ARS Pacific Basin Agricultural Research Center, Hilo, HI 96720
| | - J S Hu
- Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI 96822
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Schmidt M, Šrajer V, Purwar N, Tripathi S. The kinetic dose limit in room-temperature time-resolved macromolecular crystallography. J Synchrotron Radiat 2012; 19:264-73. [PMID: 22338689 PMCID: PMC3284346 DOI: 10.1107/s090904951105549x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 12/23/2011] [Indexed: 05/16/2023]
Abstract
Protein X-ray structures are determined with ionizing radiation that damages the protein at high X-ray doses. As a result, diffraction patterns deteriorate with the increased absorbed dose. Several strategies such as sample freezing or scavenging of X-ray-generated free radicals are currently employed to minimize this damage. However, little is known about how the absorbed X-ray dose affects time-resolved Laue data collected at physiological temperatures where the protein is fully functional in the crystal, and how the kinetic analysis of such data depends on the absorbed dose. Here, direct evidence for the impact of radiation damage on the function of a protein is presented using time-resolved macromolecular crystallography. The effect of radiation damage on the kinetic analysis of time-resolved X-ray data is also explored.
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Affiliation(s)
- M Schmidt
- Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA.
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Nair H, Arya G, Vidnapathirana J, Tripathi S, Talukder S, Srivastava V. Improving neonatal health in South-East Asia. Public Health 2012; 126:223-226. [DOI: 10.1016/j.puhe.2011.12.006] [Citation(s) in RCA: 3] [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] [Accepted: 12/09/2011] [Indexed: 10/28/2022]
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Dubey S, Dahal N, Nagarajan S, Tosh C, Murugkar H, Rinzin K, Sharma B, Jain R, Katare M, Patil S, Khandia R, Syed Z, Tripathi S, Behera P, Kumar M, Kulkarni D, Krishna L. Isolation and characterization of influenza A virus (subtype H5N1) that caused the first highly pathogenic avian influenza outbreak in chicken in Bhutan. Vet Microbiol 2012; 155:100-5. [DOI: 10.1016/j.vetmic.2011.08.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 07/21/2011] [Accepted: 08/01/2011] [Indexed: 11/27/2022]
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