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Sundaram V, Rao G, Nandi M, Reddy V, pokhala N, Mondal K, Prakash A, Bhattacharjee M. PO-1545 Comparison of PRO and PO algorithms in Rapid arc (VMAT) delivery for Head and Neck SIB treatments. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03509-5] [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: 10/18/2022]
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Nandi M, Perumareddy V, Sarkar S, Pokala N, S V, Chanda S. PO-1798 Reporting of inter fraction dose variations of OARs in CT guided HDR ICBT in carcinoma cervix. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03761-6] [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: 10/18/2022]
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Chivers SC, Vasavan T, Nandi M, Hayes-Gill BR, Jayawardane IA, Simpson JM, Williamson C, Fifer WP, Lucchini M. Measurement of the cardiac time intervals of the fetal ECG utilising a computerised algorithm: A retrospective observational study. JRSM Cardiovasc Dis 2022; 11:20480040221096209. [PMID: 35574238 PMCID: PMC9102181 DOI: 10.1177/20480040221096209] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/04/2022] [Accepted: 04/05/2022] [Indexed: 11/16/2022] Open
Abstract
Objective Establish whether the reliable measurement of cardiac time intervals of the fetal ECG can be automated and to address whether this approach could be used to investigate large datasets. Design Retrospective observational study. Setting Teaching hospitals in London UK, Nottingham UK and New York USA. Participants Singleton pregnancies with no known fetal abnormality. Methods Archived fetal ECG's performed using the MonicaAN24 monitor. A single ECG (PQRST) complex was generated from 5000 signal-averaged beats and electrical cardiac time intervals measured in an automated way and manually. Main Outcome measure Validation of a newly developed algorithm to measure the cardiac time intervals of the fetal ECG. Results 188/236 (79.7%) subjects with fECGs of suitable signal:noise ratio were included for analysis comparing manual with automated measurement. PR interval was measured in 173/188 (92%), QRS complex in 170/188 (90%) and QT interval in 123/188 (65.4%). PR interval was 107.6 (12.07) ms [mean(SD)] manual vs 109.11 (14.7) ms algorithm. QRS duration was 54.72(6.35) ms manual vs 58.34(5.73) ms algorithm. QT-interval was 268.93 (21.59) ms manual vs 261.63 (36.16) ms algorithm. QTc was 407.5(32.71) ms manual vs 396.4 (54.78) ms algorithm. The QRS-duration increased with gestational age in both manual and algorithm measurements. Conclusion Accurate measurement of fetal ECG cardiac time intervals can be automated with potential application to interpretation of larger datasets.
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Affiliation(s)
- SC Chivers
- Department of Women and Children’s Health, King’s College London, London, UK
- Department of Fetal cardiology, Evelina London Children’s Hospital, London, UK
| | - T Vasavan
- Department of Women and Children’s Health, King’s College London, London, UK
| | - M Nandi
- School of Cancer and Pharmaceutical Sciences, King’s College London, London, UK
| | - BR Hayes-Gill
- Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - IA Jayawardane
- Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - JM Simpson
- Department of Fetal cardiology, Evelina London Children’s Hospital, London, UK
| | - C Williamson
- Department of Women and Children’s Health, King’s College London, London, UK
| | - WP Fifer
- Department of Pediatrics, Columbia University Medical Center, Morgan Stanley Children’s Hospital, New York, USA
- Department of Psychiatry, Columbia University, New York, USA
| | - M Lucchini
- Department of Pediatrics, Columbia University Medical Center, Morgan Stanley Children’s Hospital, New York, USA
- Department of Psychiatry, Columbia University, New York, USA
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Basade M, Singhal M, Rathi AK, Nandi M, Minhas S, Goswami C, Shinde S, Parikh PM, Aggarwal S. Practical consensus recommendations regarding the management of HER2 neu positive metastatic breast cancer. South Asian J Cancer 2020; 7:146-150. [PMID: 29721483 PMCID: PMC5909294 DOI: 10.4103/sajc.sajc_123_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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] [Indexed: 12/04/2022] Open
Abstract
Metastatic breast cancer (MBC) is cancer that has spread from the breast to another part of the body or has come back in another distant location. Treatment options for MBC depend on several factors, including where the cancer has spread, the patient's overall health, and the levels of hormone receptors and HER2 in the tumour. Over-expression of HER2 is generally considered to be a negative prognostic feature because it accompanies an increase in breast cancer mortality. However, the development of agents that specifically target HER2 has improved the management of patients with these tumours.[7],[8],[9],[10] This expert group used data from published literature, practical experience and opinion of a large group of academic oncologists to arrive at these practical consensus recommendations in regards with the use of these agents and the management of HER2 positive MBC for the benefit of community oncologists.
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Affiliation(s)
- M Basade
- Department of Medical Oncology, Saifee Hospital, Mumbai, Maharashtra, India
| | - M Singhal
- Department of Medical Oncology, Indraprastha Apollo Hospital, New Delhi, India
| | - A K Rathi
- Department of Radiation Oncology, MAMC, New Delhi, India
| | - M Nandi
- Department of Medical Oncology, Jaypee Hospital, Noida, Uttar Pradesh, India
| | - S Minhas
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
| | - C Goswami
- Department of Medical Oncology, Jaypee Hospital, Noida, Uttar Pradesh, India
| | - S Shinde
- Department of Radiation Oncology, Medica Superspecialty Hospital, Kolkata, West Bengal, India
| | - P M Parikh
- Department of Oncology, Shalby Cancer and Research Institute, Mumbai, Maharashtra, India
| | - S Aggarwal
- Department of Radiation Oncology, Medica Superspecialty Hospital, Kolkata, West Bengal, India
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Bhattacharyya GS, Walia M, Nandi M, Murli A, Salim S, Rajpurohit S, Shinde S, Aggarwal S, Parikh PM. Practical consensus recommendations for neo-adjuvant chemotherapy in triple negative breast cancer. South Asian J Cancer 2020; 7:156-158. [PMID: 29721485 PMCID: PMC5909296 DOI: 10.4103/sajc.sajc_126_18] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This manuscript provides a practical and easy to use consensus recommendation to community oncologists on how to use neoadjuvant chemotherapy in triple negative breast cancer patients.
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Affiliation(s)
- G S Bhattacharyya
- Department of Medical Oncology, Fortis Hospital, Kolkata, West Bengal, India
| | - M Walia
- Department of Medical Oncology, Max Hospital, New Delhi, India
| | - M Nandi
- Department of Medical Oncology, Jaypee Hospital, Noida, Uttar Pradesh, India
| | - A Murli
- Department of Medical Oncology, Sarvodaya Hospital, Faridabad, Haryana, India
| | - S Salim
- Department of Oncology, Hakim Sanaullah Cancer Center, Sopore, Jammu and Kashmir, India
| | - S Rajpurohit
- Department of Medical Oncology, RGCI, New Delhi, India
| | - S Shinde
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
| | - S Aggarwal
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
| | - P M Parikh
- Department of Oncology, Shalby Cancer and Research Institute, Mumbai, Maharashtra, India
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Nandi M. H – Big data for biologists: A maths in medicine case study. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1083] [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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Nandi M, Mandal SK, Samanta M, Majhi A, Das MK. Efficacy of Mycophenolate Mofetil as a Remission Maintaining Agent in Idiopathic Childhood Nephrotic Syndrome. Indian J Nephrol 2018; 29:34-41. [PMID: 30814791 PMCID: PMC6375015 DOI: 10.4103/ijn.ijn_330_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)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Of all cases of idiopathic steroid-sensitive nephrotic syndrome (NS) in children, 40%-75% cases need long-term continuous steroids and/or other immunosuppressants to maintain remission, the effects of which on growth and renal function remain an issue of concern. The study aimed at exploring the safety and efficacy of mycophenolate mofetil (MMF) as a remission-maintaining agent in children with a diagnosis of frequent relapsing or steroid-dependent NS (FRNS/SDNS) requiring continuous medication for at least 1 year. Thirty-two children thus included received MMF (1000-1200 mg/m2/day) for 7 months along with tapering doses of oral prednisolone if it was being given from before with an attempt at tapering at 0.25 mg/kg/month ultimately stopping it altogether. Individuals were followed up for at least 5 more months after stopping MMF. Out of 32 children, 26 had SDNS and 6 had FRNS with male:female ratio being 2.2:1. The mean standard deviation (± SD) age of onset of disease was 2.72 ± 1.3 years and that entry to the study was 7.17 ± 2.2 years. Significant fall in number of relapses was observed following the introduction of MMF (110 in pre-MMF12 month period vs. 52 in post-MMF 12 months [p = 0.002]). The mean relapse rate/year/patient also decreased from 3.43 ± 1.26 to 1.62 ± 1.14 after entry in the study. Significant reduction of the cumulative dose of steroid regarding mean ± SD of mg/kg/year was also found following the introduction of MMF (190.9 ± 47.81 vs. 119.09 ± 60.09 [p = 0.001]). MMF is an efficacious agent in maintaining remission and reducing steroid requirement in children with FRNS and SDNS.
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Affiliation(s)
- M Nandi
- Department of Pediatrics, NRS Medical College, Kolkata, West Bengal, India
| | - S K Mandal
- Department of Pediatrics, College of Medicine and Sagore Dutta Hospital, Kolkata, West Bengal, India
| | - M Samanta
- Department of Pediatrics, NRS Medical College, Kolkata, West Bengal, India
| | - A Majhi
- Department of Pediatrics, NRS Medical College, Kolkata, West Bengal, India
| | - M K Das
- Department of Pediatrics, IPGMER, Kolkata, West Bengal, India
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Ghosh S, Nandi M, Pal S, Mukhopadhyay D, Chakraborty BC, Khatun M, Bhowmick D, Mondal RK, Das S, Das K, Ghosh R, Banerjee S, Santra A, Chatterjee M, Chowdhury A, Datta S. Natural killer cells contribute to hepatic injury and help in viral persistence during progression of hepatitis B e-antigen-negative chronic hepatitis B virus infection. Clin Microbiol Infect 2016; 22:733.e9-733.e19. [PMID: 27208430 DOI: 10.1016/j.cmi.2016.05.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 02/10/2016] [Revised: 04/05/2016] [Accepted: 05/09/2016] [Indexed: 12/13/2022]
Abstract
Hepatitis B e-antigen negative (e(-)) chronic HBV infection (CHI) encompasses a heterogeneous clinical spectrum ranging from inactive carrier (IC) state to e(-) chronic hepatitis B (CHB), cirrhosis and hepatic decompensation. In the backdrop of dysfunctional virus-specific T cells, natural killer (NK) cells are emerging as innate effectors in CHI. We characterized CD3(-) CD56(+) NK cells in clinically well-defined, treatment-naive e(-) patients in IC, e(-)CHB or decompensated liver cirrhosis (LC) phase to appraise their role in disease progression. The NK cell frequencies increased progressively with disease severity (IC 8.2%, e(-)CHB 13.2% and LC 14.4%). Higher proportion of NK cells from LC/e(-)CHB expressed CD69, NKp46, NKp44, TRAIL and perforin, the last two being prominent features of CD56(bright) and CD56(dim) NK subsets, respectively. The frequencies of CD3(-) CD56(+) NK cells together with TRAIL(+) CD56(bright) and Perforin(+) CD56(dim) NK cells correlated positively with serum alanine transaminase levels in e(-)CHB/LC. K562 cell-stimulated NK cells from e(-)CHB/LC exhibited significantly greater degranulation but diminished interferon-γ production than IC. Further, Perforin(+) NK cell frequency inversely correlated with autologous CD4(+) T-cell count in e(-) patients and ligands of NK receptors were over-expressed in CD4(+) T cells from e(-)CHB/LC relative to IC. Co-culture of sorted CD56(dim) NK cells and CD4(+) T cells from e(-)CHB showed enhanced CD4(+) T-cell apoptosis, which was reduced by perforin inhibitor, concanamycin A, suggesting a possible perforin-dependent NK cell-mediated CD4(+) T-cell depletion. Moreover, greater incidence of perforin-expressing NK cells and decline in CD4(+) T cells were noticed intrahepatically in e(-)CHB than IC. Collectively, NK cells contribute to the progression of e(-)CHI by enhanced TRAIL- and perforin-dependent cytolytic activity and by restraining anti-viral immunity through reduced interferon-γ secretion and perforin-mediated CD4(+) T-cell lysis.
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Affiliation(s)
- S Ghosh
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - M Nandi
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - S Pal
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - D Mukhopadhyay
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - B C Chakraborty
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - M Khatun
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - D Bhowmick
- CU-BD Centre of Excellence for Nanobiotechnology, Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, India
| | - R K Mondal
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - S Das
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - K Das
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - R Ghosh
- Division of Gastrointestinal and Liver Pathology, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - S Banerjee
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - A Santra
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - M Chatterjee
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - A Chowdhury
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - S Datta
- Department of Hepatology and Centre for Liver Research, School of Digestive & Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India.
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Sarkar S, Misra S, Nandi M. Pityriasis rubra pilaris and mesangial proliferative glomerulonephritis in a child: Association or coincidence? Indian J Nephrol 2016; 26:61-2. [PMID: 26937085 PMCID: PMC4753748 DOI: 10.4103/0971-4065.165005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Affiliation(s)
- M Nandi
- Department of Pediatrics, NRS Medical College and Hospital, Kolkata, West Bengal, India
| | - G Pandey
- Department of Pediatrics, NRS Medical College and Hospital, Kolkata, West Bengal, India
| | - S Sarkar
- Department of Pediatrics, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
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Nandi M, Mandal A, Asthana AK. Retrospective analysis of patients with cancer of the cervix attending a radiotherapy outpatient department: experience from a university-based hospital in eastern Uttar Pradesh, India. Southern African Journal of Gynaecological Oncology 2015. [DOI: 10.1080/20742835.2015.1083680] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Hussein D, Starr A, Heikal L, McNeill E, Channon KM, Brown PR, Sutton BJ, McDonnell JM, Nandi M. Validating the GTP-cyclohydrolase 1-feedback regulatory complex as a therapeutic target using biophysical and in vivo approaches. Br J Pharmacol 2015; 172:4146-57. [PMID: 26014146 PMCID: PMC4543619 DOI: 10.1111/bph.13202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 05/12/2015] [Accepted: 05/13/2015] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE 6R-L-erythro-5,6,7,8-tetrahydrobiopterin (BH4 ) is an essential cofactor for nitric oxide biosynthesis. Substantial clinical evidence indicates that intravenous BH4 restores vascular function in patients. Unfortunately, oral BH4 has limited efficacy. Therefore, orally bioavailable pharmacological activators of endogenous BH4 biosynthesis hold significant therapeutic potential. GTP-cyclohydrolase 1 (GCH1), the rate limiting enzyme in BH4 synthesis, forms a protein complex with GCH1 feedback regulatory protein (GFRP). This complex is subject to allosteric feed-forward activation by L-phenylalanine (L-phe). We investigated the effects of L-phe on the biophysical interactions of GCH1 and GFRP and its potential to alter BH4 levels in vivo. EXPERIMENTAL APPROACH Detailed characterization of GCH1-GFRP protein-protein interactions were performed using surface plasmon resonance (SPR) with or without L-phe. Effects on systemic and vascular BH4 biosynthesis in vivo were investigated following L-phe treatment (100 mg·kg(-1) , p.o.). KEY RESULTS GCH1 and GFRP proteins interacted in the absence of known ligands or substrate but the presence of L-phe doubled maximal binding and enhanced binding affinity eightfold. Furthermore, the complex displayed very slow association and dissociation rates. In vivo, L-phe challenge induced a sustained elevation of aortic BH4 , an effect absent in GCH1(fl/fl)-Tie2Cre mice. CONCLUSIONS AND IMPLICATIONS Biophysical data indicate that GCH1 and GFRP are constitutively bound. In vivo, data demonstrated that L-phe elevated vascular BH4 in an endothelial GCH1 dependent manner. Pharmacological agents which mimic the allosteric effects of L-phe on the GCH1-GFRP complex have the potential to elevate endothelial BH4 biosynthesis for numerous cardiovascular disorders.
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Affiliation(s)
- D Hussein
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
| | - A Starr
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
| | - L Heikal
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
| | - E McNeill
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular Medicine, University of Oxford, John Radcliffe HospitalOxford, UK
| | - K M Channon
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular Medicine, University of Oxford, John Radcliffe HospitalOxford, UK
| | - P R Brown
- The Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
| | - B J Sutton
- The Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
| | - J M McDonnell
- The Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
| | - M Nandi
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College LondonLondon, UK
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Das M, Nandi M. Infectious mononucleosis due to Epstein Barr virus infection presenting as life threatening thrombocytopenic bleeding. J PEDIAT INF DIS-GER 2015. [DOI: 10.3233/jpi-140438] [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: 11/15/2022]
Affiliation(s)
- M.K. Das
- Department of Pediatrics, IPGME&R, Kolkata, India
| | - M. Nandi
- Department of Pediatrics, NRS Medical College, Kolkata, India
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Nandi M, Mahata A, Selvan T, Mallick I, Achari R, Chatterjee S. EP-1063: Helical Tomotherapy vs. 3dCRT in adjuvant radiotherapy of breast cancer: comparative dosimetry. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33369-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ghosh S, Banerjee P, Deny P, Mondal RK, Nandi M, Roychoudhury A, Das K, Banerjee S, Santra A, Zoulim F, Chowdhury A, Datta S. New HBV subgenotype D9, a novel D/C recombinant, identified in patients with chronic HBeAg-negative infection in Eastern India. J Viral Hepat 2013; 20:209-18. [PMID: 23383660 DOI: 10.1111/j.1365-2893.2012.01655.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [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: 04/28/2012] [Accepted: 07/02/2012] [Indexed: 02/06/2023]
Abstract
Genome diversity is a hallmark of hepatitis B virus (HBV), which allowed its classification into 10 genotypes (A-J) and numerous subgenotypes. Among them, Genotype D is currently segregated into eight subgenotypes (D1-D8). Here, we report the identification and characterization of a novel subgenotype within genotype D of HBV from chronic hepatitis B e antigen (HBeAg)-negative patients of Eastern India. Phylogenetic tree analysis based on complete genome sequences revealed that six of 39 HBV/D isolates formed a distinct cluster supported by high bootstrap value and had nucleotide divergence >4% relative to the known D subgenotypes (D1-D8), justifying their assignment into a new subgenotype (D9). By comparing the amino acid sequences of the four ORFs of HBV/D9 with D1-D8, 36 specific residues, including a unique one (E(112) in the core region), were identified that could be considered as a signature of D9. Further analysis by Simplot, BootScan and jpHMM demonstrated that D9 resulted from a discrete recombination with genotype C over the precore-core region. This type of recombination has not been described previously as all C/D recombinants reported so far possessed genotype C backbones with mosaic fragments derived from HBV/D. Interestingly, compared to other subgenotypes of HBV/D, D9 isolates had a higher frequency of mutations (A1762T and G1764A) in the basal core promoter region that had been implicated in the development of hepatocellular carcinoma. Further investigations are needed to determine the overall prevalence and clinical significance of these newly characterized D9 strains and to assess the impact of inter-genotypic recombination on viral properties.
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Affiliation(s)
- S Ghosh
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
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Nandi M, Mahata A, Majumder T, Mallick I, Achari R, Chatterjee S. AOSP18 IS HYPOFRACTIONATED ADJUVANT RADIOTHERAPY THE WAY FORWARD IN INDIAN BREAST CANCER PATIENTS? Eur J Cancer 2013. [DOI: 10.1016/s0959-8049(13)70030-3] [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: 11/24/2022]
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Mondal R, Sarkar S, Nandi M, Hazra A. Comparative analysis between objective structured clinical examination (OSCE) and conventional examination (CE) as a formative evaluation tool in Pediatrics in semester examination for final MBBS students. Kathmandu Univ Med J (KUMJ) 2012; 10:62-5. [PMID: 22971865 DOI: 10.3126/kumj.v10i1.6917] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND The use of objective structured clinical examination in pediatrics is not common in undergraduate evaluation process. OBJECTIVE To evaluate the effectiveness of objective structured clinical examination as compare to conventional examination as formative assessment tool in Pediatrics. METHODS We conducted a cross sectional comparative study in defined population of 9th semester MBBS students to evaluate the effectiveness of objective structured clinical examination as comparison to conventional examination as formative assessment tool in Pediatrics. We analyzed the perception of objective structured clinical examination among the students. RESULTS Fifty-two students appeared for the objective structured clinical examination evaluation on the first day and 42 turned up for conventional examination on the next day. The 42 students who turned up for both examinations were asked to respond to the perception evaluation questionnaire. Comparison of the two examination styles showed that students fared better in objective structured clinical examination than in conventional examination both with respect to mean total score (p less than 0.001) as well as mean percentage score. Out of the 42 subjects who appeared in both examinations, all passed in objective structured clinical examination and 35 passed in conventional examination, this difference was significant by McNemar chi-square test (p = 0.016). 73.8% of the students opined in favor of objective structured clinical examination as a better formative assessment tool whereas 9.5% students preferred conventional examination. CONCLUSIONS Objective structured clinical examination a statistically significant better evaluation tool with comparison to conventional examination.
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Affiliation(s)
- R Mondal
- Department of Pediatrics, NBMCH, Darjeeling.
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Ghosh S, Mondal RK, Banerjee P, Nandi M, Sarkar S, Das K, Santra A, Banerjee S, Chowdhury A, Datta S. Tracking the naturally occurring mutations across the full-length genome of hepatitis B virus of genotype D in different phases of chronic e-antigen-negative infection. Clin Microbiol Infect 2012; 18:E412-8. [PMID: 22827722 DOI: 10.1111/j.1469-0691.2012.03975.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hepatitis B e-antigen (HBeAg)-negative chronic HBV infection is highly prevalent in several parts of the world, including India, with the clinical spectrum ranging from inactive carrier (IC) state to chronic 'e-negative' hepatitis B (CHB) and culminating in advanced liver disease such as cirrhosis (LC). The present study has for the first time investigated the natural diversity of HBV belonging to genotype D in treatment-naïve Indian patients representing the above phases of HBeAg-negative infection to identify candidate mutations associated with each disease state. Studies of full-length HBV/D sequences revealed that the progressive accumulation and persistence of mutations in basal core promoter, negative regulatory element, Pre-core region, the B- and T-cell epitopes of X protein as well as deletions in the PreS region contribute significantly to disease progression from IC through CHB to LC. In addition, the development of CHB was associated with a significant increase in viral variants characterized by mutations in enhancer II, preS1 promoter, T-cell epitope of core and B-cell epitope region of PreS1. While few of the mutations were previously reported in the context of HBV genotypes B and C, others had not been documented before. Our results thus highlight a distinct pattern of mutation in HBV/D that may help in predicting clinical outcomes of HBeAg-negative infection and have implications for better clinical management of the patients.
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Affiliation(s)
- S Ghosh
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
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Prasad D, Das P, Saha N, Nandi M, Guha S, Chatterjee S, Achari R, Mallick I. PD-0355 CAN OFFLINE CORRECTIONS EFFECTIVELY SUBSTITUTE FOR DAILY ONLINE IMAGING IN RADIOTHERAPY OF CARCINOMA OF PROSTATE? Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70694-1] [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: 11/25/2022]
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20
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Niewiarowski S, Nandi M, Colman RW, Bloch KJ. Electrophoretic pattern and reactivity of fibrinogen degradation products (FDP) in three assays. Scand J Haematol Suppl 2009; 13:129-35. [PMID: 4258198 DOI: 10.1111/j.1600-0609.1971.tb01998.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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21
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Mondal RK, Nandi M, Datta S, Hira M. Disseminated lipogranulomatosis. Indian Pediatr 2009; 46:175-177. [PMID: 19242039] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Farber disease or disseminated lipogranulomatosis is a rare inherited disorder of lipid metabolism resulting from a defect in ceramide degradation. Because of the feature of nodular swellings around various joints, this may sometimes be confused with juvenile idiopathic arthritis. We report a 4-year-old boy with Farber disease who presented with nodular swellings around the joint, angle of the mouth and conjunctiva, and was subsequently diagnosed to be a case of Farber Disease.
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Affiliation(s)
- R K Mondal
- Department of Pediatric Medicine and Department of Orthopedics, IPGMER and SSKM Hospital, Kolkata, India
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22
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Sinha R, Nandi M, Tullus K, Marks SD, Taraphder A. Ten-year follow-up of children after acute renal failure from a developing country. Nephrol Dial Transplant 2008; 24:829-33. [DOI: 10.1093/ndt/gfn539] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [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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23
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Mridha S, Nandi M, Bhaumik A, Basak D. A novel and simple approach to enhance ultraviolet photosensitivity: activated-carbon-assisted growth of ZnO nanoparticles. Nanotechnology 2008; 19:275705. [PMID: 21828717 DOI: 10.1088/0957-4484/19/27/275705] [Citation(s) in RCA: 5] [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] [Indexed: 05/31/2023]
Abstract
An activated-carbon (AC) assisted route is developed to synthesize a ZnO nanoparticle network. The route involves simple addition of AC to the solution containing the zinc salt and finally removing them by burning at higher temperature to form a sponge-like porous ZnO nanoparticles. The surface area measurements show that AC-assisted ZnO nanoparticles (AC-ZnO) have a higher surface area than those synthesized without AC (B-ZnO), which is further confirmed by the field emission scanning electron microscope (FESEM) and high resolution transmission electron microscope (HRTEM) images. Ultraviolet (UV) absorbance results show that the optical quality remains almost unchanged for both types of nanoparticles. Enhanced and faster UV photosensitivity has been observed for the AC-ZnO. The change in the UV photosensing properties demonstrated here provides a new approach to synthesizing other high surface area materials for novel physical and chemical properties.
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Affiliation(s)
- S Mridha
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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RajanBabu T, Casalnuovo A, Ayers T, Nomura N, Jin J, Park H, Nandi M. Ligand Tuning as a Tool for the Discovery of New Catalytic Asymmetric Processes. CURR ORG CHEM 2003. [DOI: 10.2174/1385272033372824] [Citation(s) in RCA: 16] [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: 11/22/2022]
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Abstract
The strength of solvent affects the therapeutic efficacy of homeopathic tinctures of vegetable origin. On the basis of physical, chemical and biological assay of different tinctures made with different concentrations, in the case of Holarrhena antidysenterica Wall, the best solvent was 70% v/v ethanol. This is different from the standard strong alcohol recommended in homeopathic pharmacopoeia. It may be necessary to review the procedure followed for the preparation of homeopathic mother tinctures of vegetable origin.
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Affiliation(s)
- M Nandi
- Division of Pharmacology, National Institute of Homoeopathy, Calcutta, West Bengal, India.
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Wilson R, Allen M, Nandi M, Giles H, Thornton S. Spontaneous contractions of myometrium from humans, non-human primate and rodents are sensitive to selective oxytocin receptor antagonism in vitro. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0306-5456(01)00226-1] [Citation(s) in RCA: 5] [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: 10/18/2022]
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Wilson RJ, Allen MJ, Nandi M, Giles H, Thornton S. Spontaneous contractions of myometrium from humans, non-human primate and rodents are sensitive to selective oxytocin receptor antagonism in vitro. BJOG 2001; 108:960-6. [PMID: 11563467 DOI: 10.1111/j.1471-0528.2001.00226.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To determine whether: 1. oxytocin receptor antagonists influence spontaneous contractions of myometrium from humans, non-human primates and rodents (in vitro), and 2. vasopressin V1a receptor antagonism is important for inhibition of spontaneous contractions in human myometrium. DESIGN In vitro pharmacology of spontaneous contractions of myometrium from humans and animals. SETTING The research laboratories of a university department of obstetrics and gynaecology and a pharmaceutical industry research centre. INTERVENTIONS Samples of human myometrium were obtained at caesarean section. Tissue strips were suspended in organ baths for isometric force recording. Cumulative concentration effect curves to a selective oxytocin receptor antagonist (L-371,257) and a mixed oxytocin/vasopressin V1a receptor antagonist (atosiban) were obtained. The effect of L-371,257 was also determined in myometrium from non-pregnant rats and marmosets. MAIN OUTCOME MEASURES The inhibition of spontaneous myometrial contractions in vitro. RESULTS L-371,257 and atosiban significantly inhibited spontaneous activity of human myometrium in a concentration-related manner (P < 0.05), although the effect was more pronounced with L-371,257. Spontaneous contractions of myometrium from non-pregnant rats and marmosets were also inhibited by L-371,257 (atosiban was not tested). CONCLUSIONS Spontaneous contractions of myometrium from humans, marmosets and rats are, at least in part, dependent on oxytocin receptor activity, in vitro. L-371,257 and atosiban may be inverse agonists. Selective non-peptide oxytocin receptor antagonists may be effective tocolytics.
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Affiliation(s)
- R J Wilson
- Receptor Pharmacology Unit, GlaxoSmithKline Medicines Research Centre, Stevenage, UK
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Carpenter KJ, Nandi M, Dickenson AH. Peripheral administration of low pH solutions causes activation and sensitisation of convergent dorsal horn neurones in the anaesthetised rat. Neurosci Lett 2001; 298:179-82. [PMID: 11165436 DOI: 10.1016/s0304-3940(00)01759-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
This is the first study to examine the effects of peripheral administration of acid on the activity of dorsal horn neurones in vivo. Extracellular recordings from convergent neurones revealed increases in neuronal activity evoked by administration of low pH solutions into the peripheral receptive field. Threshold for activity ranged from pH 5.85 to 2.5. The magnitude of responses increased with decreasing pH; maximum effects were achieved with pH 2.5 (648+/-181 action potentials/60 s, as compared to control-evoked activity of 86.3+/-29 action potentials/60 s). Activity lasted for up to 60 s, likely to represent the time for which the solutions were able to surmount the buffering capacity of the intact hindpaw. Significant sensitisation of the neurones to both innocuous (von Frey filament 9 g) and noxious (30 g) mechanical punctate stimuli was also observed.
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Affiliation(s)
- K J Carpenter
- Department of Pharmacology, University College London, Gower Street, WC1E 6BT, London, UK.
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Abstract
Successful use of homeopathic medicines is related to the purity and quality of crude and finished products. To maintain the quality of Tylophora indica mother tincture, a comparative study on physical, chemical and biological assay of five samples (reference laboratory and market) of Tylophora indica was carried out. The market sample showed different chromatographic characteristics and may have been prepared from a different species. T. indica has antispasmodic and hypotensive properties.
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Affiliation(s)
- M Nandi
- Division of Pharmacology, National Institute of Homoeopathy, Calcutta, West Bengal, India
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Nandi M. Dengue fever. Role of nursing personnel. Nurs J India 1996; 87:252. [PMID: 9096490] [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: 02/04/2023]
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32
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Jayaraman M, Nandi M, Sathe K, Deshmukh A, Bhawal B. Synthesis of optically pure 4-cyano and 4-formyl cis-β-lactams via Enantiospecific staudinger reaction. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/s0957-4166(00)80160-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [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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Nandi M. Quality assurance tool in operation theatre. Nurs J India 1992; 83:299-301. [PMID: 1301561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Gupta P, Saikh KU, Ghosh SK, De J, Nandi M, Saha B, Bhattacharyya FK. Modified diffusion assay for detecting antibiotic resistance in Neisseria gonorrhoeae. Indian J Med Res 1982; 75:337-43. [PMID: 6809607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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Nandi M, Harrington AR. Successful treatment of hypernatremic thirst deficiency with chlorpropamide. Clin Nephrol 1978; 10:90-5. [PMID: 699408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Two patients with hypodipsia and hypernatremia are described. The first patient, whose hypodipsia was of unknown cause, developed hypernatremia unless large volumes of fluid were urged upon him; upon treatment with chlorpropamide normal serum sodium levels were achieved with spontaneous fluid intake. The second patient had hypodipsia and diabetes insipidus resulting from a craniopharyngioma. Treatment with vasopressin and a prescribed daily water intake resulted in frequent hyper- and hyponatremia, but treatment with chlorpropramide yielded serum sodium values which were more often normal and less variable. In neither patient could the improved water regulation be attributed to an effect of chlorpropamide on renal water excretion. Possible mechanisms for the effect of chlorpropamide on thirst are discussed.
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Ahmad M, Nandi M, Bannerjee P, Singh KM. Colonic perforation in ulcerative colitis. J Indian Med Assoc 1977; 68:52-5. [PMID: 903628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
A thin-layer acrylamide gel electrophoresis technique suitable for analysis of serum or urine proteins is described in detail. The method gives sharp differentiation of protein fractions and is particularly suitable for the analysis of biological solutions containing proteins in low concentration.
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Nandi M, Lewis GP, Jick H, Slone D, Shapiro S, Siskind V. Evaluation of haptoglobin phenotype 0-0 in cirrhotic and non-cirrhotic hospital populations. J Clin Pathol 1970; 23:695-9. [PMID: 5488041 PMCID: PMC476870 DOI: 10.1136/jcp.23.8.695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The haptoglobin phenotypes of 3,332 individuals, consisting of 2,930 caucasians and 402 negroes living in the greater Boston area, were determined. Of these, 3,222 were hospitalized medical patients fully documented regarding diagnoses. One hundred and twentyeight of the total population studied were shown to exhibit starch gel anhaptoglobinaemia (3.7%). Re-evaluation on acrylamide gel of 118 0-0 samples revealed that the majority (94%) were derived from patients exhibiting hypohaptoglobinaemia rather than anhaptoglobinaemia.
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