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Ratneswaren T, Chan N, Aeron-Thomas J, Sait S, Adesalu O, Alhawamdeh M, Benger M, Garnham J, Dixon L, Tona F, McNamara C, Taylor E, Lobotesis K, Lim E, Goldberg O, Asmar N, Evbuomwan O, Banerjee S, Holm-Mercer L, Senor J, Tsitsiou Y, Tantrige P, Taha A, Ballal K, Mattar A, Daadipour A, Elfergani K, Barker R, Chakravartty R, Murchison AG, Kemp BJ, Simister R, Davagnanam I, Wong OY, Werring D, Banaras A, Anjari M, Rodrigues JCL, Thompson CAS, Haines IR, Burnett TA, Zaher REY, Reay VL, Banerjee M, Sew Hee CSL, Oo AP, Lo A, Rogers P, Hughes T, Marin A, Mukherjee S, Jaber H, Sanders E, Owen S, Bhandari M, Sundayi S, Bhagat A, Elsakka M, Hashmi OH, Lymbouris M, Gurung-Koney Y, Arshad M, Hasan I, Singh N, Patel V, Rahiminejad M, Booth TC. COVID-19 Stroke Apical Lung Examination Study 2: a national prospective CTA biomarker study of the lung apices, in patients presenting with suspected acute stroke (COVID SALES 2). Neuroimage Clin 2024; 42:103590. [PMID: 38513535 DOI: 10.1016/j.nicl.2024.103590] [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: 01/26/2024] [Revised: 03/10/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND Apical ground-glass opacification (GGO) identified on CT angiography (CTA) performed for suspected acute stroke was developed in 2020 as a coronavirus-disease-2019 (COVID-19) diagnostic and prognostic biomarker in a retrospective study during the first wave of COVID-19. OBJECTIVE To prospectively validate whether GGO on CTA performed for suspected acute stroke is a reliable COVID-19 diagnostic and prognostic biomarker and whether it is reliable for COVID-19 vaccinated patients. METHODS In this prospective, pragmatic, national, multi-center validation study performed at 13 sites, we captured study data consecutively in patients undergoing CTA for suspected acute stroke from January-March 2021. Demographic and clinical features associated with stroke and COVID-19 were incorporated. The primary outcome was the likelihood of reverse-transcriptase-polymerase-chain-reaction swab-test-confirmed COVID-19 using the GGO biomarker. Secondary outcomes investigated were functional status at discharge and survival analyses at 30 and 90 days. Univariate and multivariable statistical analyses were employed. RESULTS CTAs from 1,111 patients were analyzed, with apical GGO identified in 8.5 % during a period of high COVID-19 prevalence. GGO showed good inter-rater reliability (Fleiss κ = 0.77); and high COVID-19 specificity (93.7 %, 91.8-95.2) and negative predictive value (NPV; 97.8 %, 96.5-98.6). In subgroup analysis of vaccinated patients, GGO remained a good diagnostic biomarker (specificity 93.1 %, 89.8-95.5; NPV 99.7 %, 98.3-100.0). Patients with COVID-19 were more likely to have higher stroke score (NIHSS (mean +/- SD) 6.9 +/- 6.9, COVID-19 negative, 9.7 +/- 9.0, COVID-19 positive; p = 0.01), carotid occlusions (6.2 % negative, 14.9 % positive; p = 0.02), and larger infarcts on presentation CT (ASPECTS 9.4 +/- 1.5, COVID-19 negative, 8.6 +/- 2.4, COVID-19 positive; p = 0.00). After multivariable logistic regression, GGO (odds ratio 15.7, 6.2-40.1), myalgia (8.9, 2.1-38.2) and higher core body temperature (1.9, 1.1-3.2) were independent COVID-19 predictors. GGO was associated with worse functional outcome on discharge and worse survival after univariate analysis. However, after adjustment for factors including stroke severity, GGO was not independently predictive of functional outcome or mortality. CONCLUSION Apical GGO on CTA performed for patients with suspected acute stroke is a reliable diagnostic biomarker for COVID-19, which in combination with clinical features may be useful in COVID-19 triage.
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Affiliation(s)
- T Ratneswaren
- Charing Cross Hospital, London, UK; Addenbrooke's Hospital, Cambridge, UK
| | - N Chan
- Royal London Hospital, London, UK
| | | | - S Sait
- King's College Hospital, London, UK
| | | | | | - M Benger
- King's College Hospital, London, UK
| | | | - L Dixon
- Charing Cross Hospital, London, UK
| | - F Tona
- Charing Cross Hospital, London, UK
| | | | - E Taylor
- Charing Cross Hospital, London, UK
| | | | - E Lim
- Charing Cross Hospital, London, UK
| | | | - N Asmar
- Charing Cross Hospital, London, UK
| | | | | | | | - J Senor
- Charing Cross Hospital, London, UK
| | | | - P Tantrige
- Princess Royal University Hospital, Orpington, UK
| | - A Taha
- Princess Royal University Hospital, Orpington, UK
| | - K Ballal
- Princess Royal University Hospital, Orpington, UK
| | - A Mattar
- Princess Royal University Hospital, Orpington, UK
| | - A Daadipour
- Princess Royal University Hospital, Orpington, UK
| | - K Elfergani
- Princess Royal University Hospital, Orpington, UK
| | - R Barker
- Frimley Park Hospital, Surrey, UK
| | | | | | - B J Kemp
- John Radcliffe Hospital, Oxford, UK
| | | | | | - O Y Wong
- University College Hospital, London, UK
| | - D Werring
- Comprehensive Stroke Service, National Hospital for Neurology and Neurosurgery, University College Hospitals NHS Foundation Trust, London, UK; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, UK
| | - A Banaras
- University College Hospital, London, UK
| | - M Anjari
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, UK
| | | | | | | | | | - R E Y Zaher
- Southampton General Hospital, Southampton, UK
| | - V L Reay
- Southampton General Hospital, Southampton, UK
| | - M Banerjee
- Southampton General Hospital, Southampton, UK
| | | | - A P Oo
- Southampton General Hospital, Southampton, UK
| | - A Lo
- Addenbrooke's Hospital, Cambridge, UK
| | - P Rogers
- Addenbrooke's Hospital, Cambridge, UK
| | - T Hughes
- Cardiff and Vale University Health Board, Cardiff, UK
| | - A Marin
- Cardiff and Vale University Health Board, Cardiff, UK
| | - S Mukherjee
- Cardiff and Vale University Health Board, Cardiff, UK
| | - H Jaber
- Cardiff and Vale University Health Board, Cardiff, UK
| | - E Sanders
- Cardiff and Vale University Health Board, Cardiff, UK
| | - S Owen
- Cardiff and Vale University Health Board, Cardiff, UK
| | | | - S Sundayi
- Watford General Hospital, Watford, UK
| | - A Bhagat
- Watford General Hospital, Watford, UK
| | - M Elsakka
- Watford General Hospital, Watford, UK
| | - O H Hashmi
- Norfolk and Norwich University Hospital, Norwich, UK
| | - M Lymbouris
- Norfolk and Norwich University Hospital, Norwich, UK
| | | | - M Arshad
- Norfolk and Norwich University Hospital, Norwich, UK
| | - I Hasan
- Norfolk and Norwich University Hospital, Norwich, UK
| | - N Singh
- Norfolk and Norwich University Hospital, Norwich, UK
| | - V Patel
- St Thomas' Hospital, London, UK
| | | | - T C Booth
- King's College Hospital, London, UK; School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK.
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Sim MM, Mollica MY, Alfar HR, Hollifield M, Chung DW, Fu X, Gandhapudi S, Coenen DM, Prakhya KS, Mahmood DFD, Banerjee M, Peng C, Li X, Thornton AC, Porterfield JZ, Sturgill JL, Sievert GA, Barton-Baxter M, Zheng Z, Campbell KS, Woodward JG, López JA, Whiteheart SW, Garvy BA, Wood JP. Unfolded Von Willebrand Factor Binds Protein S and Reduces Anticoagulant Activity. bioRxiv 2024:2024.02.08.579463. [PMID: 38370737 PMCID: PMC10871343 DOI: 10.1101/2024.02.08.579463] [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: 02/20/2024]
Abstract
Protein S (PS), the critical plasma cofactor for the anticoagulants tissue factor (TF) pathway inhibitor (TFPI) and activated protein C (APC), circulates in two functionally distinct pools: free (anticoagulant) or bound to complement component 4b-binding protein (C4BP) (anti-inflammatory). Acquired free PS deficiency is detected in several viral infections, but its cause is unclear. Here, we identified a shear-dependent interaction between PS and von Willebrand Factor (VWF) by mass spectrometry. Consistently, plasma PS and VWF comigrated in both native and agarose gel electrophoresis. The PS/VWF interaction was blocked by TFPI but not APC, suggesting an interaction with the C-terminal sex hormone binding globulin (SHBG) region of PS. Microfluidic systems, mimicking arterial laminar flow or disrupted turbulent flow, demonstrated that PS stably binds VWF as VWF unfolds under turbulent flow. PS/VWF complexes also localized to platelet thrombi under laminar arterial flow. In thrombin generation-based assays, shearing plasma decreased PS activity, an effect not seen in the absence of VWF. Finally, free PS deficiency in COVID-19 patients, measured using an antibody that binds near the C4BP binding site in SHBG, correlated with changes in VWF, but not C4BP, and with thrombin generation. Our data suggest that PS binds to a shear-exposed site on VWF, thus sequestering free PS and decreasing its anticoagulant activity, which would account for the increased thrombin generation potential. As many viral infections present with free PS deficiency, elevated circulating VWF, and increased vascular shear, we propose that the PS/VWF interaction reported here is a likely contributor to virus-associated thrombotic risk.
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Affiliation(s)
- Martha M.S. Sim
- Department of Molecular and Cellular Biochemistry, University of Kentucky, KY, USA
| | - Molly Y. Mollica
- Bloodworks Northwest Research Institute, WA, USA
- Division of Hematology, School of Medicine, University of Washington, WA, USA
- Department of Mechanical Engineering, University of Maryland, Baltimore County, MD, USA
| | - Hammodah R. Alfar
- Department of Molecular and Cellular Biochemistry, University of Kentucky, KY, USA
| | - Melissa Hollifield
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, KY, USA
| | - Dominic W. Chung
- Bloodworks Northwest Research Institute, WA, USA
- Department of Biochemistry, University of Washington, WA, USA
| | - Xiaoyun Fu
- Bloodworks Northwest Research Institute, WA, USA
- Division of Hematology, School of Medicine, University of Washington, WA, USA
| | - Siva Gandhapudi
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, KY, USA
| | - Daniëlle M. Coenen
- Department of Molecular and Cellular Biochemistry, University of Kentucky, KY, USA
| | | | | | - Meenakshi Banerjee
- Department of Molecular and Cellular Biochemistry, University of Kentucky, KY, USA
| | - Chi Peng
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, KY, USA
| | - Xian Li
- Saha Cardiovascular Research Center, University of Kentucky, KY, USA
| | | | - James Z. Porterfield
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, KY, USA
- Division of Infectious Disease, University of Kentucky, KY, USA
| | - Jamie L. Sturgill
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, KY, USA
| | - Gail A. Sievert
- Center for Clinical and Translational Science, University of Kentucky, KY, USA
| | | | - Ze Zheng
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
- Versiti Blood Research Institute, Milwaukee, WI, USA
| | - Kenneth S. Campbell
- Center for Clinical and Translational Science, University of Kentucky, KY, USA
| | - Jerold G. Woodward
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, KY, USA
| | - José A. López
- Bloodworks Northwest Research Institute, WA, USA
- Division of Hematology, School of Medicine, University of Washington, WA, USA
| | - Sidney W. Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky, KY, USA
- Saha Cardiovascular Research Center, University of Kentucky, KY, USA
| | - Beth A. Garvy
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, KY, USA
| | - Jeremy P. Wood
- Department of Molecular and Cellular Biochemistry, University of Kentucky, KY, USA
- Saha Cardiovascular Research Center, University of Kentucky, KY, USA
- Division of Cardiovascular Medicine Gill Heart and Vascular Institute, University of Kentucky, KY, USA
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Reynolds EL, Votruba KL, Watanabe M, Banerjee M, Elafros MA, Chant E, Villegas-Umana E, Giordani B, Feldman EL, Callaghan BC. The Effect of Surgical Weight Loss on Cognition in Individuals with Class II/III Obesity. J Nutr Health Aging 2023; 27:1153-1161. [PMID: 38151865 DOI: 10.1007/s12603-023-2047-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/10/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND Obesity is a global epidemic and is associated with cognitive impairment and dementia. It remains unknown whether weight loss interventions, such as bariatric surgery, can mitigate cognitive impairment. OBJECTIVES We aimed to determine the effect of surgical weight loss on cognition in individuals with class II/III obesity. DESIGN We performed a prospective cohort study of participants who underwent bariatric surgery. At baseline and two years following surgery, participants completed metabolic risk factor and neuropsychological assessments. SETTING Participants were enrolled from an academic suburban bariatric surgery clinic. PARTICIPANTS There were 113 participants who completed baseline assessments and 87 completed two-year follow-up assessments (66 in-person and 21 virtual) after bariatric surgery. The mean (SD) age was 46.8 (12.5) years and 64 (73.6%) were female. INTERVENTION Bariatric surgery. There were 77 (88.5%) participants that underwent sleeve gastrectomy and 10 (11.5%) that underwent gastric bypass surgery. MEASUREMENTS Cognition was assessed using the NIH toolbox cognitive battery (NIHTB-CB) and the Rey Auditory Verbal Learning Test (AVLT). The primary outcome was the change in NIHTB-CB fluid composite score before and after surgery. RESULTS The primary outcome, NIHTB-CB composite score, was stable following bariatric surgery (-0.4 (13.9), p=0.81,n=66). Among secondary outcomes, the NIHTB-CB dimensional card sorting test (executive function assessment), improved (+6.5 (19.9),p=0.01,n=66) while the Rey AVLT delayed recall test (memory assessment) declined (-0.24 (0.83),p=0.01,n=87) following surgery. Improvements to metabolic risk factors and diabetes complications were not associated with improvements to NIHTB-CB composite score. The other 4 NIHTB-CB subtests and Rey AVLT assessments of auditory learning and recognition were stable at follow-up. CONCLUSIONS Following bariatric surgery, the age-adjusted composite cognitive outcome did not change, but an executive subtest score improved. These results suggest that bariatric surgery may mitigate the natural history of cognitive decline in individuals with obesity, which is expected to be faster than normal aging, but confirmatory randomized controlled trials are needed. The decline in delayed recall also warrants further studies to determine potential differential effects on cognitive subtests.
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Affiliation(s)
- E L Reynolds
- Brian Callaghan, 109 Zina Pitcher Place, 4021 BSRB, Ann Arbor, MI 48104, 734-764-7205 office, 734-763-7275 fax,
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4
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Thomas L, Kurian SJ, Mukherjee N, Thomas RB, Keerthanaa B, Sekhar SM, Subeesh V, Banerjee M, Varma M, Rao M, Rao M. Potential drug-drug interactions among hospitalised TB patients. Int J Tuberc Lung Dis 2022; 26:1137-1143. [PMID: 36447328 DOI: 10.5588/ijtld.22.0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND: Hospitalised TB patients are at heightened risk for developing drug-drug interactions (DDIs) due to overlapping CYP450 enzyme and/or drug transporter biotransformation of anti-TB drugs and co-medications given for treating TB-associated comorbidities. We aimed to compare the occurrence, characterisation and determinants of database identified potential DDIs (pDDIs) associated with first-line anti-TB drugs and other co-medications using a subscription and free access drug information database.METHOD: This was a single-centre retrospective study to assess pDDIs between first-line anti-TB drugs and other medications for comorbidities among hospitalised TB patients using IBM Micromedex® and Drugs.com.RESULTS: On multivariate regression analysis, hospitalised TB patients with comorbidities such as diabetes mellitus, HIV infection and hypertension, longer hospitalisation, and patients administered with more than seven drugs during their hospital stay were associated with increased risk for the occurrence of pDDIs. Significant discrepancies were observed in the detection and severity of pDDIs between IBM Micromedex and Drugs.com.CONCLUSION: We recommend using free access drug information database to a subscription drug information database in drug interaction screening protocols in clinics for enhanced identification of pDDIs and reducing monetary burden in resource-limited settings.
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Affiliation(s)
- L Thomas
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - S J Kurian
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - N Mukherjee
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - R B Thomas
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - B Keerthanaa
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - S M Sekhar
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - V Subeesh
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - M Banerjee
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - M Varma
- Department of Infectious Diseases, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
| | - M Rao
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - M. Rao
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
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Campbell RA, Manne BK, Banerjee M, Middleton EA, Ajanel A, Schwertz H, Denorme F, Stubben C, Montenont E, Saperstein S, Page L, Tolley ND, Lim DL, Brown SM, Grissom CK, Sborov DW, Krishnan A, Rondina MT. IFITM3 regulates fibrinogen endocytosis and platelet reactivity in nonviral sepsis. J Clin Invest 2022; 132:e153014. [PMID: 36194487 PMCID: PMC9711880 DOI: 10.1172/jci153014] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/29/2022] [Indexed: 01/13/2023] Open
Abstract
Platelets and megakaryocytes are critical players in immune responses. Recent reports suggest infection and inflammation alter the megakaryocyte and platelet transcriptome to induce altered platelet reactivity. We determined whether nonviral sepsis induces differential platelet gene expression and reactivity. Nonviral sepsis upregulated IFN-induced transmembrane protein 3 (IFITM3), an IFN-responsive gene that restricts viral replication. As IFITM3 has been linked to clathrin-mediated endocytosis, we determined whether IFITM3 promoted endocytosis of α-granule proteins. IFN stimulation enhanced fibrinogen endocytosis in megakaryocytes and platelets from Ifitm+/+ mice, but not Ifitm-/- mice. IFITM3 overexpression or deletion in megakaryocytes demonstrated IFITM3 was necessary and sufficient to regulate fibrinogen endocytosis. Mechanistically, IFITM3 interacted with clathrin and αIIb and altered their plasma membrane localization into lipid rafts. In vivo IFN administration increased fibrinogen endocytosis, platelet reactivity, and thrombosis in an IFITM-dependent manner. In contrast, Ifitm-/- mice were completely rescued from IFN-induced platelet hyperreactivity and thrombosis. During murine sepsis, platelets from Ifitm+/+ mice demonstrated increased fibrinogen content and platelet reactivity, which was dependent on IFN-α and IFITMs. Platelets from patients with nonviral sepsis had increases in platelet IFITM3 expression, fibrinogen content, and hyperreactivity. These data identify IFITM3 as a regulator of platelet endocytosis, hyperreactivity, and thrombosis during inflammatory stress.
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Affiliation(s)
- Robert A. Campbell
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
- Department of Internal Medicine
- Department of Pathology, and
| | - Bhanu Kanth Manne
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Meenakshi Banerjee
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Elizabeth A. Middleton
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
- Department of Internal Medicine
| | | | - Hansjorg Schwertz
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
- Rocky Mountain Center for Occupational and Environmental Health, University of Utah, Salt Lake City, Utah, USA
- Occupational Medicine, Billings Clinic Bozeman, Bozeman, Montana, USA
| | - Frederik Denorme
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Chris Stubben
- Bioinformatics Shared Resource, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - Emilie Montenont
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | | | - Lauren Page
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Neal D. Tolley
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Diana L. Lim
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
| | - Samuel M. Brown
- Division of Pulmonary and Critical Medicine, Department of Medicine, Intermountain Medical Center, Murray, Utah, USA
| | - Colin K. Grissom
- Division of Pulmonary and Critical Medicine, Department of Medicine, Intermountain Medical Center, Murray, Utah, USA
| | - Douglas W. Sborov
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - Anandi Krishnan
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California, USA
- Department of Pathology, Stanford University, Stanford, California, USA
| | - Matthew T. Rondina
- University of Utah Molecular Medicine Program, Salt Lake City, Utah, USA
- Department of Internal Medicine
- Department of Pathology, and
- George E. Wahlen Department of Veterans Affairs Medical Center, Department of Internal Medicine, and Geriatric Research, Education, and Clinical Center, Salt Lake City, Utah, USA
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Sim MM, Banerjee M, Myint T, Garvy BA, Whiteheart SW, Wood JP. Total Plasma Protein S Is a Prothrombotic Marker in People Living With HIV. J Acquir Immune Defic Syndr 2022; 90:463-471. [PMID: 35616596 PMCID: PMC9246910 DOI: 10.1097/qai.0000000000002994] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 03/21/2022] [Indexed: 01/30/2023]
Abstract
BACKGROUND HIV-1 infection is associated with multiple procoagulant changes and increased thrombotic risk. Possible mechanisms for this risk include heigthened expression of procoagulant tissue factor (TF) on circulating monocytes, extracellular vesicles, and viral particles and/or acquired deficiency of protein S (PS), a critical cofactor for the anticoagulant protein C (PC). PS deficiency occurs in up to 76% of people living with HIV-1 (PLWH). As increased ex vivo plasma thrombin generation is a strong predictor of mortality, we investigated whether PS and plasma TF are associated with plasma thrombin generation. METHODS We analyzed plasma samples from 9 healthy controls, 17 PLWH on first diagnosis (naive), and 13 PLWH on antiretroviral therapy (ART). Plasma thrombin generation, total and free PS, PC, C4b-binding protein, and TF activity were measured. RESULTS We determined that the plasma thrombin generation assay is insensitive to PS, because of a lack of PC activation, and developed a modified PS-sensitive assay. Total plasma PS was reduced in 58% of the naive and 38% of the ART-treated PLWH samples and correlated with increased thrombin generation in the modified assay. Conversely, plasma TF was not increased in our patient population, suggesting that it does not significantly contribute to ex vivo plasma thrombin generation. CONCLUSION These data suggest that reduced total plasma PS contributes to the thrombotic risk associated with HIV-1 infection and can serve as a prothrombotic biomarker. In addition, our refined thrombin generation assay offers a more sensitive tool to assess the functional consequences of acquired PS deficiency in PLWH.
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Affiliation(s)
- Martha M.S. Sim
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY
| | - Meenakshi Banerjee
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY
| | - Thein Myint
- Division of Infectious Diseases, Department of Internal Medicine, University of Kentucky, Lexington, KY
- Bluegrass Care Clinic, Kentucky Clinic, University of Kentucky, Lexington, KY
| | - Beth A. Garvy
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY
| | - Sidney W. Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY
- Lexington Veterans’ Affairs Healthcare System, Lexington, KY
| | - Jeremy P. Wood
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY
- Gill Heart and Vascular Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, University of Kentucky, Lexington, KY
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY
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Gupta S, Gauba K, Mitra P, Banerjee M, Yadav D, Sharma P. W141 Evaluation of interleukin-22 and its’ expression in tuberculosis: A pilot study. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Karli S, Tomo S, Banerjee M. M308 Seasonal variation of vitamin d levels in northwestern India - A retrospective study. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.392] [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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Banerjee M, Kuznetsov M, Udovenko O, Volpert V. Nonlocal Reaction-Diffusion Equations in Biomedical Applications. Acta Biotheor 2022; 70:12. [PMID: 35298702 DOI: 10.1007/s10441-022-09436-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/28/2022] [Indexed: 11/01/2022]
Abstract
Nonlocal reaction-diffusion equations describe various biological and biomedical applications. Their mathematical properties are essentially different in comparison with the local equations, and this difference can lead to important biological implications. This review will present the state of the art in the investigation of nonlocal reaction-diffusion models in biomedical applications. We will consider various models arising in mathematical immunology, neuroscience, cancer modelling, and we will discuss their mathematical properties, nonlinear dynamics, resulting spatiotemporal patterns and biological significance.
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Spüntrup C, Banerjee M, Piana J, Hellmich M, Bojahr J, Bojahr B, Albus C, Noé G. The influence of persistent bleeding after supracervical hysterectomy on depressive and anxious symptoms: a prospective bicenter study. Arch Gynecol Obstet 2022; 306:127-132. [PMID: 35229204 DOI: 10.1007/s00404-022-06446-y] [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] [Received: 09/21/2021] [Accepted: 02/09/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Postoperative spotting is a frequent adverse symptom after laparoscopic supracervical hysterectomy (LSH). The conical excision (eLSH) reduces the postoperative spotting rate, but data in a larger collective are still rare and inconsistent. The influence of persistent bleeding on the anxious and depressive symptoms has not been analyzed yet. METHODS 311 patients, who underwent a laparoscopic supracervical hysterectomy with conical excision (n = 163), or with straight cervical resection (n = 148) were included. Anxious and depressive symptoms and postoperative spotting were recorded before operation, at 3 month follow-up and at 1 year follow-up in both operative groups using a validated questionnaire (German version of Hospital Anxiety and Depression Scale, HADS-D) and additional questions concerning the frequency and impact of bleeding. Statistical analysis included the impairment of bleeding as well as its impact on depressive and anxious symptoms for both groups. RESULTS 11.5% after eLSH and 15.5% after LSH reported spotting after 1 year. Supracervical hysterectomy significantly improves depressive and anxious symptoms at 3 and at 12 month follow-up for both groups (p < 0.001) independent on residual spotting. Patients with a preoperative continuous bleeding showed a maximum benefit independent on operative method. CONCLUSION Laparoscopic supracervical hysterectomy has a positive effect on anxious and depressive symptoms in the short-term and intermediate-term follow-up. The conical excision of the cervical stump reduces postoperative spotting rate, but has no explicit advantage on symptoms of depression or anxiety, irrespective of residual postoperative spotting.
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Affiliation(s)
- Carolin Spüntrup
- Department of Obstetrics and Gynecology, Rheinlandklinikum Dormagen, Dormagen, Germany.
- Department for Gynecology, Obstetrics and Reproductive Medicine, Saarland University Hospital, Homburg, Germany.
- Pelvic School Saarbrücken, Hohe Wacht 77, Saarbrücken, Germany.
| | - M Banerjee
- Department of Orthopedic Surgery and Sports Traumatology, Atos Media Park Clinic, Cologne, Germany
- University of Witten/Herdecke, Witten, Germany
| | - J Piana
- Department of Obstetrics and Gynecology, Rheinlandklinikum Dormagen, Dormagen, Germany
| | - M Hellmich
- Institute for Medical Statistics and Epidemiology, University of Cologne, Cologne, Germany
| | | | | | - C Albus
- Department of Psychosomatics and Psychotherapy, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - G Noé
- Department of Obstetrics and Gynecology, Rheinlandklinikum Dormagen, Dormagen, Germany
- University of Witten/Herdecke, Witten, Germany
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Spüntrup C, Banerjee M, Bordelius M, Hellmich M, Bojahr J, Bojahr B, Albus C, Noé G. The influence of conventional and extended supracervical hysterectomy on sexuality and quality of life parameters: a prospective bi-center study with a special focus on postoperative spotting. Arch Gynecol Obstet 2022; 305:1079-1088. [DOI: 10.1007/s00404-021-06376-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/20/2021] [Indexed: 11/02/2022]
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Pal R, Banerjee M, Bhadada SK, Shetty AJ, Singh B, Vyas A. Vitamin D supplementation and clinical outcomes in COVID-19: a systematic review and meta-analysis. J Endocrinol Invest 2022; 45:53-68. [PMID: 34165766 PMCID: PMC8223190 DOI: 10.1007/s40618-021-01614-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 06/12/2021] [Indexed: 12/13/2022]
Abstract
PURPOSE To provide a precise summary and collate the hitherto available clinical evidence on the effect of vitamin D supplementation on clinical outcomes in COVID-19 patients. METHODS PubMed/MEDLINE, Scopus, and Web of Science databases were systematically searched using appropriate keywords till June 8, 2021, to identify observational studies and randomized controlled trials (RCTs) reporting adverse clinical outcomes (ICU admission and/or mortality) in COVID-19 patients receiving vitamin D supplementation vs. those not receiving the same. Both prior use and use of vitamin D after COVID-19 diagnosis were considered. Unadjusted/adjusted pooled odds ratio (OR) with 95% confidence intervals (CI) were calculated (PROSPERO registration number CRD42021248488). RESULTS We identified 13 studies (10 observational, 3 RCTs) pooling data retrieved from 2933 COVID-19 patients. Pooled analysis of unadjusted data showed that vitamin D use in COVID-19 was significantly associated with reduced ICU admission/mortality (OR 0.41, 95% CI: 0.20, 0.81, p = 0.01, I2 = 66%, random-effects model). Similarly, on pooling adjusted risk estimates, vitamin D was also found to reduce the risk of adverse outcomes (pooled OR 0.27, 95% CI: 0.08, 0.91, p = 0.03, I2 = 80%, random-effects model). Subgroup analysis showed that vitamin D supplementation was associated with improved clinical outcomes only in patients receiving the drug post-COVID-19 diagnosis and not in those who had received vitamin D before diagnosis. CONCLUSIONS Vitamin D supplementation might be associated with improved clinical outcomes, especially when administered after the diagnosis of COVID-19. However, issues regarding the appropriate dose, duration, and mode of administration of vitamin D remain unanswered and need further research.
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Affiliation(s)
- R Pal
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - M Banerjee
- Department of Endocrinology, Institute of Postgraduate Medical Education and Research, Kolkata, 700020, India
| | - S K Bhadada
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
| | - A J Shetty
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - B Singh
- Government Medical College, Patiala, 147001, India
| | - A Vyas
- Department of Medicine, Rabindranath Tagore Medical College, Udaipur, 313001, India
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Pal R, Bhadada SK, Mukherjee S, Banerjee M, Kumar A. Fracture risk in hypoparathyroidism: a systematic review and meta-analysis. Osteoporos Int 2021; 32:2145-2153. [PMID: 34021765 DOI: 10.1007/s00198-021-05966-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 03/15/2021] [Accepted: 04/14/2021] [Indexed: 12/15/2022]
Abstract
UNLABELLED In this meta-analysis, we analyzed 7 observational studies for assessing the fracture risk in patients with hypoparathyroidism (hypoPT). We found that the risk of vertebral fractures is increased by almost 2-fold, especially those with nonsurgical hypoPT. PURPOSE Patients with hypoPT have higher bone mineral density than age- and sex-matched controls. This would theoretically translate into a lower risk of fractures, although available clinical evidence is contradictory. Hence, the present systematic review and meta-analysis was undertaken to collate and provide a precise summary of fracture risk in hypoPT. METHODS PubMed, Scopus, and Web of Science databases were systematically searched using appropriate keywords till March 8, 2021, to identify observational studies reporting the rate of occurrence of fractures among hypoPT patients (nonsurgical and/or postsurgical) compared to non-hypoPT subjects (controls). Study quality was assessed using Newcastle-Ottawa Scale. Pooled odds ratio (OR) with 95% confidence intervals (CI) was calculated. Subgroup analyses of nonsurgical and postsurgical hypoPT patients were also conducted. RESULTS We identified 7 observational studies of high-quality pooling data retrieved from 1470 patients with hypoPT. When stratified based on the skeletal site, pooled analyses showed that hypoPT patients were at an increased risk of vertebral fractures compared to non-hypoPT controls (OR 2.22, 95% CI: 1.23, 4.03, p = 0.009, I2 = 49%, random-effects model). The increased risk of vertebral fractures was seen only in patients with nonsurgical hypoPT (OR 2.31, 95% CI: 1.32, 4.03, p = 0.003, I2 = 3%, random-effects model) but not in those with postsurgical hypoPT. hypoPT patients were not at an increased or decreased risk of any, humerus, or proximal femur/hip fractures than controls. CONCLUSIONS Nonsurgical hypoPT patients are at an almost 2-fold increased risk of vertebral fractures and thus need to be actively screened irrespective of the underlying BMD.
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Affiliation(s)
- R Pal
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - S K Bhadada
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
| | - S Mukherjee
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - M Banerjee
- Department of Endocrinology, Institute of Postgraduate Medical Education and Research, Kolkata, 700007, India
| | - A Kumar
- National Institute of Nursing Education, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
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Banerjee M, Hegde S, Thippeswamy H, Kulkarni GB, Rao N. In search of the 'self': Holistic rehabilitation in restoring cognition and recovering the 'self' following traumatic brain injury: A case report. NeuroRehabilitation 2021; 48:231-242. [PMID: 33664160 DOI: 10.3233/nre-208017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Following mild-moderate traumatic brain injury (TBI), an individual experiences a range of emotional changes. It is often difficult for the patient to reconcile with their post-injury persona, and the memory of pre-injury personhood is particularly painful. Insight into one's cognitive deficits subsequent to injury can lead to an existential crisis and a sense of loss, including loss of self. OBJECTIVE Restoration of cognitive functions and reconciliation with loss of pre-traumatic personhood employing a holistic method of neuropsychological rehabilitation in a patient suffering from TBI. METHODS Ms. K.S, a 25-year-old female, presented with emotional disturbances following TBI. She reported both retrograde and anterograde amnesia. A multidimensional holistic rehabilitation was planned. Treatment addressed cognitive deficits through the basic functions approach. Cognitive behavioural methods for emotional regulation like diary writing helped reduce irritability and anger outbursts. Use of social media created new modes of memory activation and interactions. Compensatory strategies were used to recover lost skills, music-based attention training helped foster an individualised approach to the sense of one's body and self. RESULTS As a result of these differing strategies, changes were reflected in neuro-psychological tests, depression score and the patient's self-evaluation. This helped generate a coherent self-narrative. CONCLUSION Treatment challenges in such cases are increased due to patient's actual deficits caused by neuronal/biochemical changes. Innovative and multi-pronged rehabilitation strategies which involve everyday activities provided an answer to some of these problems. This method of rehabilitation may provide an optimistic context for future research.
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Affiliation(s)
- Meenakshi Banerjee
- Neuropsychology and Cognitive Neuroscience Centre, Department of Clinical Psychology, National Institute of Mental Health and Neuro Sciences, Bengaluru, India
| | - Shantala Hegde
- Neuropsychology and Cognitive Neuroscience Centre, Department of Clinical Psychology, National Institute of Mental Health and Neuro Sciences, Bengaluru, India.,Associate Professor and Wellcome DBT India Alliance Intermediate Fellow, Clinical Neuropsychology and Cognitive Neuro Sciences Center, Music Cognition Laboratory, Department of Clinical Psychology, National Institute of Mental Health and Neuro Sciences, Bengaluru, India.,Department of Clinical Psychology, National Institute of Mental Health and Neuro Sciences, Bengaluru, India
| | - Harish Thippeswamy
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, India
| | - Girish B Kulkarni
- Department of Neurology, National Institute of Mental Health and Neuro Sciences, Bengaluru, India
| | - Narasinga Rao
- Department of Surgery, National Institute of Mental Health and Neuro Sciences, Bengaluru, India
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Sahu A, Swaroop S, Kant S, Banerjee M. Signatures for chronic obstructive pulmonary disease (COPD) and asthma: a comparative genetic analysis. Br J Biomed Sci 2021; 78:177-183. [PMID: 33740392 DOI: 10.1080/09674845.2021.1905988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background: Chronic obstructive pulmonary disease (COPD) and asthma are obstructive lung diseases which progress in severity with time. Environmental causes and genetic makeup of individuals play important roles in disease manifestation. The aim of present study was to search for diagnostic/prognostic biomarkers to differentiate COPD and asthma.Materials and methods: Seven ADAM33 and two AQP5 single-nucleotide polymorphisms (SNPs) were genotyped by polymerase chain reaction-restriction fragment length polymorphism method. The association of genotypes, haplotypes and allelic combination of variants in different genes was analyzed in 194 COPD, 150 asthma patients and 220 controls.Results: The genotype frequencies of SNPs V4(C/G), T1(T/C), S2(G/C) of ADAM33 and AQP5 A/G (rs3736309) were associated with COPD and asthma (P=0.038 to P<0.001), while S1(A/G) and F+1(C/T) were associated with asthma (both P<0.001) and V1(G/T) with 20 COPD (P<0.001). The allele frequencies of V4(C/G) (both P<0.001), V1(G/T) (both P<0.05), S2(G/C) (both P<0.01) and S1(A/G) (both P<0.05) were associated with COPD and asthma, while F+1(C/T) was associated only with asthma (P=0.005). Haplotypes of ADAM33 'GGTGGGT' (P=0.027), 'CGTCGGC' (P<0.001) and AQP5 'GA' and 'AG' (both P<0.001) were significant only in COPD.Conclusion: ADAM33 F+1(C/T) variant and allele combination 'GGTGGGTGA' may be specific markers for asthma, while AQP5 'AG' appeared as a haplotype associated only with COPD. These specific genetic biomarkers may be exploited to predict individual predisposition to COPD and asthma.
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Affiliation(s)
- A Sahu
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
| | - S Swaroop
- Experimental and Public Health Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
| | - S Kant
- Department of Respiratory Medicine, King George's Medical University, Lucknow, India
| | - M Banerjee
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
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16
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Banerjee M, Pal R. Reply to letter to the editor: "COVID-19 and the endocrine system: exploring the unexplored". Focus on acromegaly. J Endocrinol Invest 2021; 44:639-640. [PMID: 33386586 PMCID: PMC7775727 DOI: 10.1007/s40618-020-01470-8] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/17/2020] [Indexed: 11/12/2022]
Affiliation(s)
- M Banerjee
- Department of Endocrinology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - R Pal
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India.
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17
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Hubbard WB, Banerjee M, Vekaria H, Prakhya KS, Joshi S, Wang QJ, Saatman KE, Whiteheart SW, Sullivan PG. Differential Leukocyte and Platelet Profiles in Distinct Models of Traumatic Brain Injury. Cells 2021; 10:cells10030500. [PMID: 33652745 PMCID: PMC7996744 DOI: 10.3390/cells10030500] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 11/20/2020] [Revised: 02/04/2021] [Accepted: 02/18/2021] [Indexed: 12/19/2022] Open
Abstract
Traumatic brain injury (TBI) affects over 3 million individuals every year in the U.S. There is growing appreciation that TBI can produce systemic modifications, which are in part propagated through blood–brain barrier (BBB) dysfunction and blood–brain cell interactions. As such, platelets and leukocytes contribute to mechanisms of thromboinflammation after TBI. While these mechanisms have been investigated in experimental models of contusion brain injury, less is known regarding acute alterations following mild closed head injury. To investigate the role of platelet dynamics and bioenergetics after TBI, we employed two distinct, well-established models of TBI in mice: the controlled cortical impact (CCI) model of contusion brain injury and the closed head injury (CHI) model of mild diffuse brain injury. Hematology parameters, platelet-neutrophil aggregation, and platelet respirometry were assessed acutely after injury. CCI resulted in an early drop in blood leukocyte counts, while CHI increased blood leukocyte counts early after injury. Platelet-neutrophil aggregation was altered acutely after CCI compared to sham. Furthermore, platelet bioenergetic coupling efficiency was transiently reduced at 6 h and increased at 24 h post-CCI. After CHI, oxidative phosphorylation in intact platelets was reduced at 6 h and increased at 24 h compared to sham. Taken together, these data demonstrate that brain trauma initiates alterations in platelet-leukocyte dynamics and platelet metabolism, which may be time- and injury-dependent, providing evidence that platelets carry a peripheral signature of brain injury. The unique trend of platelet bioenergetics after two distinct types of TBI suggests the potential for utilization in prognosis.
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Affiliation(s)
- William Brad Hubbard
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, KY 40536, USA; (W.B.H.); (H.V.); (K.E.S.)
- Department of Physiology, University of Kentucky, Lexington, KY 40508, USA
- Department of Neuroscience, University of Kentucky, Lexington, KY 40508, USA
- Lexington Veterans’ Affairs Healthcare System, Lexington, KY 40502, USA;
| | - Meenakshi Banerjee
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA; (M.B.); (K.S.P.); (S.J.)
| | - Hemendra Vekaria
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, KY 40536, USA; (W.B.H.); (H.V.); (K.E.S.)
| | | | - Smita Joshi
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA; (M.B.); (K.S.P.); (S.J.)
| | - Qing Jun Wang
- Department of Ophthalmology and Visual Sciences, University of Kentucky, Lexington, KY 40536, USA;
| | - Kathryn E. Saatman
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, KY 40536, USA; (W.B.H.); (H.V.); (K.E.S.)
- Department of Physiology, University of Kentucky, Lexington, KY 40508, USA
| | - Sidney W. Whiteheart
- Lexington Veterans’ Affairs Healthcare System, Lexington, KY 40502, USA;
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA; (M.B.); (K.S.P.); (S.J.)
| | - Patrick G. Sullivan
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, KY 40536, USA; (W.B.H.); (H.V.); (K.E.S.)
- Department of Neuroscience, University of Kentucky, Lexington, KY 40508, USA
- Lexington Veterans’ Affairs Healthcare System, Lexington, KY 40502, USA;
- Correspondence: ; Tel.: +1-859-323-4684
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18
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Banerjee M, Volpert V. Stochastic intracellular regulation can remove oscillations in a model of tissue growth. Math Med Biol 2020; 37:551-568. [PMID: 32735317 DOI: 10.1093/imammb/dqaa009] [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] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/28/2020] [Accepted: 06/19/2020] [Indexed: 01/06/2023]
Abstract
The work is devoted to the analysis of cell population dynamics where cells make a choice between differentiation and apoptosis. This choice is based on the values of intracellular proteins whose concentrations are described by a system of ordinary differential equations with bistable dynamics. Intracellular regulation and cell fate are controlled by the extracellular regulation through the number of differentiated cells. It is shown that the total cell number necessarily oscillates if the initial condition in the intracellular regulation is fixed. These oscillations can be suppressed if the initial condition is a random variable with a sufficiently large variation. Thus, the result of the work suggests a possible answer to the question about the role of stochasticity in the intracellular regulation.
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Affiliation(s)
- M Banerjee
- Department of Mathematics and Statistics, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - V Volpert
- Institut Camille Jordan, UMR 5208 CNRS, University Lyon 1, 69622 Villeurbanne, France.,INRIA, Université de Lyon, Université Lyon 1, Institut Camille Jordan, 43 Bd. du 11 Novembre 1918, 69200 Villeurbanne Cedex, France.,Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow 117198, Russian Federation
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Affiliation(s)
- R Pal
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - M Banerjee
- Department of Endocrinology, Institute of Post Graduate Medical Education and Research (IPGMER), Kolkata, 700007, India
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20
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Banerjee M, Huang Y, Joshi S, Popa GJ, Mendenhall MD, Wang QJ, Garvy BA, Myint T, Whiteheart SW. Platelets Endocytose Viral Particles and Are Activated via TLR (Toll-Like Receptor) Signaling. Arterioscler Thromb Vasc Biol 2020; 40:1635-1650. [PMID: 32434410 DOI: 10.1161/atvbaha.120.314180] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Thrombocytopenia is associated with many viral infections suggesting virions interact with and affect platelets. Consistently, viral particles are seen inside platelets, and platelet activation markers are detected in viremic patients. In this article, we sought mechanistic insights into these virion/platelet interactions by examining how platelets endocytose, traffic, and are activated by a model virion. Approach and Results: Using fluorescently tagged HIV-1 pseudovirions, 3-dimensional structured illumination microscopy, and transgenic mouse models, we probed the interactions between platelets and virions. Mouse platelets used known endocytic machinery, that is, dynamin, VAMP (vesicle-associated membrane protein)-3, and Arf6 (ADP-ribosylation factor 6), to take up and traffic HIV-1 pseudovirions. Endocytosed HIV-1 pseudovirions trafficked through early (Rab4+) and late endosomes (Rab7+), and then to an LC3+ (microtubule-associated protein 1A/1B-light chain 3) compartment. Incubation with virions induced IRAK4 (interleukin 1 receptor-associated kinase 4), Akt (protein kinase B), and IKK (IκB kinase) activation, granule secretion, and platelet-leukocyte aggregate formation. This activation required TLRs (Toll-like receptors) and MyD88 (myeloid differentiation primary response protein 88) but was less extensive and slower than activation with thrombin. In vivo, HIV-1 pseudovirions injection led to virion uptake and platelet activation, as measured by IKK activation, platelet-leukocyte aggregate formation, and mild thrombocytopenia. All were decreased in VAMP-3-/- and, megakaryocyte/platelet-specific, Arf6-/- mice. Similar platelet activation profiles (increased platelet-leukocyte aggregates, plasma platelet factor 4, and phospho-IκBα) were detected in newly diagnosed and antiretroviral therapy-controlled HIV-1+ patients. CONCLUSIONS Collectively, our data provide mechanistic insights into the cell biology of how platelets endocytose and process virions. We propose a mechanism by which platelets sample the circulation and respond to potential pathogens that they take up.
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Affiliation(s)
- Meenakshi Banerjee
- Department of Molecular and Cellular Biochemistry (M.B., S.J., G.J.P., M.D.M., S.W.W.), University of Kentucky, Lexington
| | - Yunjie Huang
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, OH (Y.H.)
| | - Smita Joshi
- Department of Molecular and Cellular Biochemistry (M.B., S.J., G.J.P., M.D.M., S.W.W.), University of Kentucky, Lexington.,Lexington VA Health Care System, KY (S.J., S.W.W.)
| | - Gabriel J Popa
- Department of Molecular and Cellular Biochemistry (M.B., S.J., G.J.P., M.D.M., S.W.W.), University of Kentucky, Lexington
| | - Michael D Mendenhall
- Department of Molecular and Cellular Biochemistry (M.B., S.J., G.J.P., M.D.M., S.W.W.), University of Kentucky, Lexington
| | - Qing Jun Wang
- Department of Ophthalmology and Visual Sciences (Q.J.W.), University of Kentucky, Lexington
| | - Beth A Garvy
- Department of Microbiology, Immunology and Molecular Genetics (B.A.G.), University of Kentucky, Lexington
| | - Thein Myint
- Department of Infectious Diseases, Bluegrass Care Clinic, Kentucky Clinic (T.M.), University of Kentucky, Lexington
| | - Sidney W Whiteheart
- Department of Molecular and Cellular Biochemistry (M.B., S.J., G.J.P., M.D.M., S.W.W.), University of Kentucky, Lexington.,Lexington VA Health Care System, KY (S.J., S.W.W.)
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Sim MM, Li X, Bidarian SJ, Song X, Banerjee M, Myint T, Whiteheart SW, Wood JP. A Refined Plasma Thrombin Generation Assay Identifies Functional Importance of the First Two EGF‐like Domains of the Anticoagulant Protein S. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.06196] [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: 11/11/2022]
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22
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Moni SC, Mollah AH, Banerjee M, Khan TH, Sejuti A, Morshed SS. Neonatal Sepsis: Clinical characteristics, Epidemiology and Antibiotic Sensitivity Pattern of the Bacterial Pathogens in Neonatal Intensive Care Unit of a Tertiary Care Hospital. Mymensingh Med J 2020; 29:366-375. [PMID: 32506092] [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: 06/11/2023]
Abstract
Neonatal sepsis, a major newborn killer worldwide exhibits wide spectrum of clinical manifestations. Epidemiology and aetiological organisms vary with geographical area and time. Objective of the study was to study clinical characteristics, epidemiology, bacterial aetiology and drug sensitivity pattern of isolated organisms in Neonatal Intensive Care Unit (NICU), Dhaka Medical College Hospital (DMCH), Dhaka, Bangladesh. This observational cross sectional study was carried out in NICU, DMCH from January 2014 to June 2015. The inclusion criteria were newborns having features of sepsis at admission or developing such features afterwards when admitted for other indications. A blood sample was collected aseptically immediately after clinical diagnosis and was sent for relevant laboratory investigations. Sample for culture sensitivity was inoculated bedside to culture bottle and sent to department of microbiology. The newborns were followed up till hospital discharge or death. All information regarding history, laboratory findings and follow up were recorded in a structured questionnaire. Of the 200 neonates, 59% were diagnosed as having late onset sepsis (LONS). Premature and low birth weight (LBW) babies mostly suffered from LONS. Respiratory distress, tachycardia, lethargy were the predominant symptoms in both early and late sepsis. Blood culture yielded growth in 55% of the septic newborns. Klebsiella pneumoniae was the predominant organism in both early and late sepsis. Most of the Gram negative bacteria were sensitive to colistin, meropenem and imipenem. Case fatality was 24.39% and 34.74% in early and late sepsis respectively.
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Affiliation(s)
- S C Moni
- Dr Sadeka Choudhury Moni, Associate Professor, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
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Kushwah AS, Gupta MK, Singh R, Banerjee M. Cytokine gene variants and treatment outcome of cisplatin-based concomitant chemoradiotherapy in cervical cancer. Br J Biomed Sci 2020; 77:81-86. [DOI: 10.1080/09674845.2020.1714164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- AS Kushwah
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - MK Gupta
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
| | - R Singh
- Department of Obstetrics & Gynecology, King George’s Medical University, Lucknow, India
| | - M Banerjee
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
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Kathuveetil A, Sylaja PN, Senthilvelan S, Kesavadas C, Banerjee M, Jayanand Sudhir B. Vessel Wall Thickening and Enhancement in High-Resolution Intracranial Vessel Wall Imaging: A Predictor of Future Ischemic Events in Moyamoya Disease. AJNR Am J Neuroradiol 2020; 41:100-105. [PMID: 31896569 DOI: 10.3174/ajnr.a6360] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/27/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Very few data are available with regard to high-resolution intracranial vessel wall imaging characteristics of Moyamoya disease and their relation to ischemic stroke risk. We investigated the high resolution imaging characteristics of MMD and its correlation with recent ischemic events. MATERIALS AND METHODS Patients with Moyamoya disease confirmed by DSA, including patients after revascularization, were enrolled. All the patients underwent high-resolution intracranial vessel wall imaging. Vessel wall thickening, enhancement, and the remodeling index of the bilateral distal ICA and proximal MCA were noted. The patients were followed up at 3 months and 6 months after high-resolution intracranial vessel wall imaging and the association of ischemic events with imaging characteristics was assessed. RESULTS Twenty-nine patients with Moyamoya disease were enrolled. The median age at symptom onset was 12 years (range, 1-51 years). A total of 166 steno-occlusive lesions were detected by high-resolution intracranial vessel wall imaging. Eleven lesions with concentric wall thickening (6.6%) were noted in 9 patients. Ten concentric contrast-enhancing lesions were observed in 8 patients, of which 3 patients (4 lesions) showed grade II enhancement. The presence of contrast enhancement (P = .01) and wall thickening (P ≤ .001) showed a statistically significant association with ischemic events within 3 months before and after the vessel wall imaging. Grade II enhancement showed a statistically significant (P = .02) association with ischemic events within 4 weeks of high-resolution intracranial vessel wall imaging. The mean ± standard deviation outer diameter of the distal ICA (right, -3.3 ± 0.68 mm; left, 3.4 ± 0.60 mm) and the remodeling index (right, 0.71 ± 0.13; left, 0.69 ± 0.13) were lower in Moyamoya disease. CONCLUSIONS High-resolution intracranial vessel wall imaging characteristics of concentric wall thickening and enhancement are relatively rare in our cohort of patients with Moyamoya disease. The presence of wall thickening and enhancement may predict future ischemic events in patients with Moyamoya disease.
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Affiliation(s)
- A Kathuveetil
- From the Comprehensive Stroke Care Program (A.K., P.N.S.), Department of Neurology
| | - P N Sylaja
- From the Comprehensive Stroke Care Program (A.K., P.N.S.), Department of Neurology
| | | | | | - M Banerjee
- Neurosurgery (B.J.S.), Rajiv Gandhi Centre for Biotechnology, Trivandrum, Kerala, India
| | - B Jayanand Sudhir
- Sree Chitra Tirunal Institute for Medical Sciences and Technology (M.B.), Trivandrum, Kerala, India
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25
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Affiliation(s)
- MK Gupta
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
| | - AS Kushwah
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - R Singh
- Department of Obstetrics & Gynecology, King George’s Medical University, Lucknow, India
| | - M Banerjee
- Molecular and Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
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Banerjee M, Kulhari K, Saha TK. Assessment of DNA Methylation in p15, p16 and E-Cadherin Genes as a Screening Tool for Early Carcinoma Cervix. Indian J Clin Biochem 2019; 35:423-429. [PMID: 33013011 DOI: 10.1007/s12291-019-00837-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 06/04/2019] [Indexed: 11/24/2022]
Abstract
Cancer cervix is diagnosed late in women due to anatomical inaccessibility of the area. Hence, a robust screening strategy will help detect carcinoma cervix early which will significantly decrease the mortality and morbidity due to this disease. We evaluated DNA methylation of three tumour suppressor genes p15, p16 and E-Cadherin on cervical smears to assess DNA methylation as a screening tool for detection of early cervical cancer in comparison to PAP smears. DNA was extracted from cervical smears of 20 cases and 30 controls. The DNA was bisulphite modified. Methylation specific PCR (MSP) was performed to assess the methylation status of the promoter region of each of the genes. MSP results were compared with PAP smears to assess the utility of DNA methylation of these genes in screening for cervical cancer. DNA methylation was detected in 55% subjects in p15 gene, 45% in p16 gene and 40% in E-Cadherin gene. This was statistically significant when compared to the controls. DNA methylation of E-Cadherin, and p15 genes as a panel has a sensitivity and specificity of 80% and 90% respectively, which is better than the sensitivity of PAP smear for detection of early cancer cervix. Increased DNA methylation is seen in p15, p16 and E-Cadherin genes in early cancer cervix. p15 and E-Cadherin in combination can be used as a screening tool for detection of early cancer cervix.
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Affiliation(s)
- M Banerjee
- All India Institute of Medical Sciences, Jodhpur, India
| | - K Kulhari
- Command Hospital Chandigarh, Chandimandir, India
| | - T K Saha
- Department of Biochemistry, Al Falah School of Medical Science and Research Centre, Faridabad, India
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27
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Abstract
Background: Diabetes is the seventh most common disease leading to death with a global estimate of 425 million diabetics, expected to be 629 million in 2045. The role of reactive metabolites and antioxidants, such as glutathione, glutathione peroxidase, superoxide dismutase and catalase in type 2 diabetes mellitus (T2DM) provides an opportunity for identifying gene variants and risk genotypes. We hypothesised that certain antioxidant gene-gene interactions are linked with T2DM and can model disease risk prediction.Materials and methods: Genotyping of single nucleotide polymorphisms (SNPs) in antioxidant genes for glutathione (GST), glutathione peroxidase (GPx), superoxide dismutase (SOD) and catalase (CAT) was performed in 558 T2DMs and 410 age and sex matched healthy controls by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), routine lab indices by standard techniques.Results: The null/null allele combination of GSTM1del and GSTT1del increased disease risk up to 1.7-fold. The combination of SNPs in GSTM1del, GSTT1del, GSTP1 + 313A/G and in CAT-21A/T, SOD2 + 47C/T, GPx1 + 599C/T increased the risk of diabetes 13.5 and 2.1-fold, respectively. Interaction of SNPs GSTM1del, GSTT1del, GSTP1 + 313A/G (105Ile/Val), CAT-21A/T, SOD2 + 47C/T, GPx1 + 599C/T were significantly linked with disease risk >5 × 103 fold.Conclusion: As the number of gene combinations increase, there is a rise in the odds ratio of disease risk, suggesting that gene-gene interaction plays an important role in T2DM susceptibility. Individuals who possess the GSTM1del, GSTT1del, GSTP1 105I/V(+313A/G), CAT-21A/T, SOD2 + 47C/T and GPx1 + 599C/T are at very high risk of developing T2DM.
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Affiliation(s)
- M Banerjee
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, India
| | - P Vats
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, India
| | - A S Kushwah
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, India.,Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - N Srivastava
- Department of Physiology, King George's Medical University, Lucknow, Uttar Pradesh, India
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Abstract
Background and objective: Carcinoma of cervix is the second most common cancer among women worldwide. The DNA repair network plays an important role in the maintenance of genetic stability, protection against DNA damage and carcinogenesis. Alterations in repair genes XRCC1, XRCC2 and XRCC3 and been reported in certain cancers. We hypothesised an association between XRCC1+399A/G, XRCC2+31467G/A and XRCC3+18067C/T polymorphisms and the risk of cervical cancer. Subjects and methods: This study included 525 subjects (265 controls and 260 cervical cancer cases). Genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: Women with GA and AA genotypes of XRCC1+399A/G showed 2.4-3.8 fold higher risk of cervical cancer (P = 0.001). The +399A* allele was significantly linked with cervical cancer (P = 0.002). However, XRCC2+31479G/A and XRCC3+18067C/T polymorphisms did not show any statistically significant associations. Conclusion: The XRCC1+399A/G SNP is linked with cervical cancer. We suggest that this variant can be utilized as a prognostic marker for determination of cervical cancer susceptibility.
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Affiliation(s)
- M Abbas
- a Molecular and Human Genetics Laboratory, Department of Zoology , University of Lucknow , Lucknow , India.,b Department of Microbiology , ERA University , Lucknow , India
| | - K Srivastava
- c Department of Radiotherapy , King George's Medical University , Lucknow , India
| | - M Imran
- d Department of Biosciences, Faculty of Science , Integral University , Lucknow , India
| | - M Banerjee
- a Molecular and Human Genetics Laboratory, Department of Zoology , University of Lucknow , Lucknow , India
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Findeklee S, Spüntrup E, Radosa JC, Sklavounos P, Hamza A, Solomayer EF, Banerjee M, Spüntrup C. Endoscopic surgery: talent or training? Arch Gynecol Obstet 2019; 299:1331-1335. [PMID: 30874950 DOI: 10.1007/s00404-019-05116-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/07/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE There are two groups of undergraduate students involved in endoscopic surgery with different degrees of experience: average and more experience. This study proves whether the subjective impression of the laparoscopic trainer is verifiable and which factors influence extreme talent. METHODS 21 medical students of the eighth term of the University of Witten-Herdecke participated in the study. On their first course day, students got instructed in suturing and knot technique. They were then required to tie a maximum of five knots within 2 h. After a week, students repeated this procedure. Time used for tying knots was stopped. RESULTS Regarding the time students used for their first knots, great differences were provable (7-8 min, average 23 min). However, an adaption of the knotting time was noticed at the end of the first course day. This was confirmed during the second course day. Neither acquired factors (music, sport, etc.) nor individual factors (visual acuity, handedness, etc.) had any impact on the time used for knotting. Merely, one advantage was seen with the first knots with the factors of playing the guitar and having a more than 10-h surgical previous experience. Knotting times leveled off at 95% to less than 10 min, though. DISCUSSION Neither normally talented nor extremely talented junior surgeons could be noticed, and so could not the co-factors providing an advantage or disadvantage for surgery, respectively. All prospective surgeons can learn defined tasks (knots) by short interval training, and thus show similarly good results after a few repetitions.
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Affiliation(s)
- S Findeklee
- Universitätsfrauenklinik des Saarlandes, Kirrberger Straße 100, Gebäude 9, 66421, Homburg, Germany
| | - E Spüntrup
- Klinikum Saarbrücken, Winterberg 1, 66119, Saarbrücken, Germany
| | - J C Radosa
- Universitätsfrauenklinik des Saarlandes, Kirrberger Straße 100, Gebäude 9, 66421, Homburg, Germany
| | - P Sklavounos
- Universitätsfrauenklinik des Saarlandes, Kirrberger Straße 100, Gebäude 9, 66421, Homburg, Germany
| | - A Hamza
- Universitätsfrauenklinik des Saarlandes, Kirrberger Straße 100, Gebäude 9, 66421, Homburg, Germany
| | - E F Solomayer
- Universitätsfrauenklinik des Saarlandes, Kirrberger Straße 100, Gebäude 9, 66421, Homburg, Germany
| | - M Banerjee
- University of Witten Herdecke, Alfred-Herrhausen-Straße 50, 58455, Witten, Germany
- Pelvic School Saarbrücken, Hohe Wacht 77, 66119, Saarbrücken, Germany
| | - C Spüntrup
- Universitätsfrauenklinik des Saarlandes, Kirrberger Straße 100, Gebäude 9, 66421, Homburg, Germany.
- University of Witten Herdecke, Alfred-Herrhausen-Straße 50, 58455, Witten, Germany.
- Pelvic School Saarbrücken, Hohe Wacht 77, 66119, Saarbrücken, Germany.
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30
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Siddiqui S, Waghdhare S, Goel C, Panda M, Soneja H, Sundar J, Banerjee M, Jha S, Dubey S. Augmentation of IL-6 production contributes to development of gestational diabetes mellitus: An Indian study. Diabetes Metab Syndr 2019; 13:895-899. [PMID: 31336542 DOI: 10.1016/j.dsx.2018.12.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 11/28/2018] [Accepted: 12/26/2018] [Indexed: 12/22/2022]
Abstract
AIM Inflammatory mediators like interleukin-6 (IL-6) and acute phase protein like C-reactive protein (CRP) are supposed to contribute to development of GDM, however clinical data supporting this hypothesis is limited. This study was designed to analyze the association of IL-6 and CRP with development of GDM in Indian females. METHODS This case control study included pregnant women diagnosed as GDM (n = 53) and those having normal glucose tolerance (n = 50). Serum levels of IL-6 and CRP were analysed and correlated with various clinical parameters. RESULTS Serum IL-6 levels were significantly high (p < 0.05) in GDM females as compared to control females. IL-6 levels correlated with pre-pregnancy body mass index (BMI), fasting blood sugar (FBS) and postprandial sugar (PPBS). Unlike IL-6, CRP levels did not show significant differences between GDM and control females. However, positive correlation of CRP levels with BMI, FBS and PPBS was observed. CONCLUSION High IL-6 levels in gestational diabetes may indicate a possible role for inflammation in pathophysiology of GDM.
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Affiliation(s)
- Samreen Siddiqui
- Institute of Endocrinology, Diabetes & Metabolism, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India; Amity Institute of Virology & Immunology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201313, India
| | - Swati Waghdhare
- Institute of Endocrinology, Diabetes & Metabolism, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India
| | - Chhavi Goel
- Amity Institute of Virology & Immunology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201313, India
| | - Manju Panda
- Institute of Endocrinology, Diabetes & Metabolism, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India
| | - Hemi Soneja
- Institute of Endocrinology, Diabetes & Metabolism, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India
| | - Jayasree Sundar
- Department of Obstetrics & Gynaecology, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India
| | - Meenakshi Banerjee
- Department of Obstetrics & Gynaecology, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India
| | - Sujeet Jha
- Institute of Endocrinology, Diabetes & Metabolism, Max Healthcare Inst. Ltd, Saket, New Delhi, 110017, India
| | - Shweta Dubey
- Amity Institute of Virology & Immunology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201313, India.
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Abstract
Anucleate platelets are produced by fragmentation of megakaryocytes. Platelets circulate in the bloodstream for a finite period: upon vessel injury, they are activated to participate in hemostasis; upon senescence, unused platelets are cleared. Platelet hypofunction leads to bleeding. Conversely, pathogenic platelet activation leads to occlusive events that precipitate strokes and heart attacks. Recently, we and others have shown that autophagy occurs in platelets and is important for platelet production and normal functions including hemostasis and thrombosis. Due to the unique properties of platelets, such as their lack of nuclei and their propensity for activation, methods for studying platelet autophagy must be specifically tailored. Here, we describe useful methods for examining autophagy in both human and mouse platelets.
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Affiliation(s)
- Meenakshi Banerjee
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Yunjie Huang
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Madhu M Ouseph
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, USA
| | - Smita Joshi
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Irina Pokrovskaya
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Brian Storrie
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Jinchao Zhang
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Sidney W Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Qing Jun Wang
- Department of Ophthalmology and Visual Sciences, University of Kentucky, Lexington, KY, USA.
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Abbas M, Kushwaha VS, Srivastava K, Raza ST, Banerjee M. Impact of GSTM1, GSTT1 and GSTP1 genes polymorphisms on clinical toxicities and response to concomitant chemoradiotherapy in cervical cancer. Br J Biomed Sci 2018; 75:169-174. [PMID: 29909733 DOI: 10.1080/09674845.2018.1482734] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 10/28/2022]
Abstract
BACKGROUND Certain forms of chemoradiotherapy generate toxic reactive oxygen species, which may be ameliorated by antioxidant enzymes such as glutathione S-transferase (GST). Genetic polymorphisms of GST may predict treatment outcomes and can be used as genetic marker to screen patients before treatment. We hypothesised an effect of GST polymorphisms on the response and toxicities produced by chemoradiation therapy. MATERIALS AND METHODS GST polymorphisms were determined by multiplex polymerase chain reaction and PCR-restriction fragment length polymorphism (PCR-RFLP) in 227 women with cervical cancer receiving cisplatin based chemoradiotherapy. Treatment response and toxicities were evaluated by standard internationally recognised criteria (RECIST and RTOG). RESULTS Severe (grade 3-4) gastrointestinal and haematological toxicities were present in 22 (9.4%) and 16 (7.0%) patients, respectively. GSTM1 null, GSTT1 null and GSTP1 AG genotypes brought marginally better non-significant associations. In single locus analysis GSTP1 AG and GG was linked to greatest risk of severe (grade 3-4) gastrointestinal toxicity (OR = 3.12, P = 0.035 and OR = 6.99, P = 0.01, respectively). In gene-gene interaction analysis, GSTM1 null-GSTP1 GG showed 4.2-fold higher risk of severe gastrointestinal toxicity (P = 0.014). GSTT1 null-GSTP1 AG reached statistical significance with a 3.9-fold higher risk of high grade gastrointestinal toxicity (P = 0.038). CONCLUSIONS Although no significant links were found between GST polymorphism and treatment response, null genotypes of GSTM1, GSTT1 and 'G' allele of GSTP1 bring a higher risk of severe gastrointestinal toxicity due to chemoradiation therapy in cervical cancer.
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Affiliation(s)
- M Abbas
- a Molecular and Human Genetics Laboratory, Department of Zoology , University of Lucknow , Lucknow , India
| | - V S Kushwaha
- b Department of Radiotherapy , King George's Medical University , Lucknow , India
| | - K Srivastava
- b Department of Radiotherapy , King George's Medical University , Lucknow , India
| | - S T Raza
- c Department of Biochemistry , ERA'S Lucknow Medical College , Lucknow , India
| | - M Banerjee
- a Molecular and Human Genetics Laboratory, Department of Zoology , University of Lucknow , Lucknow , India
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Kodam A, Ourdev D, Maulik M, Hariharakrishnan J, Banerjee M, Wang Y, Kar S. A role for astrocyte-derived amyloid β peptides in the degeneration of neurons in an animal model of temporal lobe epilepsy. Brain Pathol 2018; 29:28-44. [PMID: 29665128 DOI: 10.1111/bpa.12617] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 10/13/2017] [Accepted: 04/11/2018] [Indexed: 12/13/2022] Open
Abstract
Kainic acid, an analogue of the excitatory neurotransmitter glutamate, can trigger seizures and neurotoxicity in the hippocampus and other limbic structures in a manner that mirrors the neuropathology of human temporal lobe epilepsy (TLE). However, the underlying mechanisms associated with the neurotoxicity remain unclear. Since amyloid-β (Aβ) peptides, which are critical in the development of Alzheimer's disease, can mediate toxicity by activating glutamatergic NMDA receptors, it is likely that the enhanced glutamatergic transmission that renders hippocampal neurons vulnerable to kainic acid treatment may involve Aβ peptides. Thus, we seek to establish what role Aβ plays in kainic acid-induced toxicity using in vivo and in vitro paradigms. Our results show that systemic injection of kainic acid to adult rats triggers seizures, gliosis and loss of hippocampal neurons, along with increased levels/processing of amyloid precursor protein (APP), resulting in the enhanced production of Aβ-related peptides. The changes in APP levels/processing were evident primarily in activated astrocytes, implying a role for astrocytic Aβ in kainic acid-induced toxicity. Accordingly, we showed that treating rat primary cultured astrocytes with kainic acid can lead to increased Aβ production/secretion without any compromise in cell viability. Additionally, we revealed that kainic acid reduces neuronal viability more in neuronal/astrocyte co-cultures than in pure neuronal culture, and this is attenuated by precluding Aβ production. Collectively, these results indicate that increased production/secretion of Aβ-related peptides from activated astrocytes can contribute to neurotoxicity in kainic acid-treated rats. Since kainic acid administration can lead to neuropathological changes resembling TLE, it is likely that APP/Aβ peptides derived from astrocytes may have a role in TLE pathogenesis.
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Affiliation(s)
- A Kodam
- Department of Psychiatry, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
| | - D Ourdev
- Department of Psychiatry, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
| | - M Maulik
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
| | - J Hariharakrishnan
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
| | - M Banerjee
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
| | - Y Wang
- Department of Psychiatry, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
| | - S Kar
- Department of Psychiatry, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8.,Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8.,Department of Medicine, University of Alberta, Edmonton, Alberta, Canada, T6G 2M8
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Banerjee M, Jain A, Mukherjee GS. Spectroscopic Evaluation of Optical Parameters of a Transition Metal Salt Filled Polymer Material. DEFENCE SCI J 2018. [DOI: 10.14429/dsj.68.12331] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Transition metal salt, manganese chloride was incorporated into polyvinyl alcohol (PVA) to prepare metal salt filled polymer material (M-PVA) and their optical properties were evaluated. XRD, UV-vis, and FTIR analyses reveal that there is strong interaction between PVA and the manganese chloride salt. From XRD analysis, the inter-chain separation in pristine PVA and M-PVA was found to be 5.62 Ǻ and 4.70 Ǻ, respectively; thus indicating that the packing of polymer chains is more compact under the influence of manganese chloride. Optical band gap of PVA was found as 5.06 eV but such band gap was reduced on incorporation of manganese chloride into the PVA matrix system with corresponding increase in optical conductivity. Spectral evaluation indicates that refractive index of M-PVA decreases faster than that of PVA in the visible range. Abbe Number was found to have decreased on incorporation of manganese chloride into the PVA matrix system indicating increase in optical dispersion in conformity with the trend of increase in dispersion energy (Ed). The average interband oscillator wavelength was found close to the respective values of absorption edges.
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Melchionda D, Pastacaldi E, Perri C, Banerjee M, Venturino E. Social behavior-induced multistability in minimal competitive ecosystems. J Theor Biol 2018; 439:24-38. [DOI: 10.1016/j.jtbi.2017.11.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 08/25/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
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Mierzwa M, Shumway D, Guo C, Casper K, Shuman A, Spector M, Stenmark M, Griggs J, Eisbruch A, Banerjee M. Are We Overtreating Oropharynx Cancer? Trends in Multimodality Treatment of Squamous Cell Carcinoma of the Oropharynx. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1460] [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: 11/15/2022]
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Afroz S, Ferdaus T, Hanif M, Mollah AH, Banerjee M, Khan TH. Role of pRIFLE Criteria in Early Diagnosis of Severity Staging of Neonatal AKI and its Impact on Management. Mymensingh Med J 2017; 26:279-286. [PMID: 28588162] [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: 06/07/2023]
Abstract
Mortality is high among sick neonates who have concomitant acute kidney injury (AKI). This observational study was done at Special Care Baby Unit (SCABU) of Dhaka Medical College Hospital (DMCH), Bangladesh from October 2013 to March 2014 to find out the role of pRIFLE criteria in prediction of severity stages of AKI in neonate and early intervention to see the immediate outcome. A total of 44 neonates with AKI were included, all were treated conservatively and with intermittent peritoneal dialysis (IPD) as needed. The neonate of ≤7 days old comprised the main bulk (n=28) and M: F = 21: 23. The diagnosis was based on eCCL criteria of pRIFLE showed that 40.9% neonates were at risk of AKI, 20.5% have had already injured. Higher proportions of neonates were classified as failure (38.6%). The distribution of biochemical parameters among three stages of AKI showed serum potassium was significantly higher in failure group (p<0.001). The serum creatinine both at baseline and at next evaluations were significantly raised in the failure group (p<0.001). However, failure group had a significantly longer hospital stay compared to risk and injury group (p<0.001). Multiorgan failure was found to be lower in the risk group compared to other two groups (p=0.026). Majority of the failure group needed dialysis as compared to the risk and injury group (p<0.001). The mortality was progressively higher from risk to failure groups (p=0.106). Overall 27% of the neonates diagnosed AKI by pRIFLE were died of the disease. The study concluded that pRIFLE staging in AKI is useful and sensitive in the diagnosis and management of AKI in neonates.
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Affiliation(s)
- S Afroz
- Dr Shireen Afroz, Associate Professor, Department of Pediatric Nephrology, Bangladesh Institute of Child Health (BICH) & Dhaka Shishu (Children) Hospital, Sher-e-bangla Nagar Dhaka, Bangladesh
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Ghosh RR, Ghosh M, Chatterjee M, Banerjee M. In vitro demonstration of potential virulence determinants among clinical isolates of various Candida species and its clinical implication in a Teaching Hospital in Eastern India. Indian J Med Microbiol 2016; 34:406-7. [PMID: 27514982 DOI: 10.4103/0255-0857.188385] [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: 11/04/2022]
Affiliation(s)
- R R Ghosh
- Department of Microbiology, R.G. Kar Medical College and Hospital, Kolkata, West Bengal, India
| | - M Ghosh
- Department of Microbiology, R.G. Kar Medical College and Hospital, Kolkata, West Bengal, India
| | - M Chatterjee
- Department of Microbiology, R.G. Kar Medical College and Hospital, Kolkata, West Bengal, India
| | - M Banerjee
- Department of Microbiology, R.G. Kar Medical College and Hospital, Kolkata, West Bengal, India
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Abstract
The prey-predator model with nonlocal consumption of prey introduced in this work extends previous studies of local reaction-diffusion models. Linear stability analysis of the homogeneous in space stationary solution and numerical simulations of nonhomogeneous solutions allow us to analyze bifurcations and dynamics of stationary solutions and of travelling waves. These solutions present some new properties in comparison with the local models. They correspond to different feeding strategies of predators observed in ecology.
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Affiliation(s)
- M Banerjee
- Department of Mathematics and Statistics, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - V Volpert
- Institut Camille Jordan, UMR 5208 CNRS, University Lyon 1, 69622 Villeurbanne, France
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Schneider MM, Balke M, Koenen P, Fröhlich M, Wafaisade A, Bouillon B, Banerjee M. Inter- and intraobserver reliability of the Rockwood classification in acute acromioclavicular joint dislocations. Knee Surg Sports Traumatol Arthrosc 2016; 24:2192-6. [PMID: 25399347 DOI: 10.1007/s00167-014-3436-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 11/10/2014] [Indexed: 11/27/2022]
Abstract
PURPOSE The reliability of the Rockwood classification, the gold standard for acute acromioclavicular (AC) joint separations, has not yet been tested. The purpose of this study was to investigate the reliability of visual and measured AC joint lesion grades according to the Rockwood classification. METHODS Four investigators (two shoulder specialists and two second-year residents) examined radiographs (bilateral panoramic stress and axial views) in 58 patients and graded the injury according to the Rockwood classification using the following sequence: (1) visual classification of the AC joint lesion, (2) digital measurement of the coracoclavicular distance (CCD) and the horizontal dislocation (HD) with Osirix Dicom Viewer (Pixmeo, Switzerland), (3) classification of the AC joint lesion according to the measurements and (4) repetition of (1) and (2) after repeated anonymization by an independent physician. Visual and measured Rockwood grades as well as the CCD and HD of every patient were documented, and a CC index was calculated (CCD injured/CCD healthy). All records were then used to evaluate intra- and interobserver reliability. RESULTS The disagreement between visual and measured diagnosis ranged from 6.9 to 27.6 %. Interobserver reliability for visual diagnosis was good (0.72-0.74) and excellent (0.85-0.93) for measured Rockwood grades. Intraobserver reliability was good to excellent (0.67-0.93) for visual diagnosis and excellent for measured diagnosis (0.90-0.97). The correlations between measurements of the axial view varied from 0.68 to 0.98 (good to excellent) for interobserver reliability and from 0.90 to 0.97 (excellent) for intraobserver reliability. CONCLUSION Bilateral panoramic stress and axial radiographs are reliable examinations for grading AC joint injuries according to Rockwood's classification. Clinicians of all experience levels can precisely classify AC joint lesions according to the Rockwood classification. We recommend to grade acute ACG lesions by performing a digital measurement instead of a sole visual diagnosis because of the higher intra- and interobserver reliability. LEVEL OF EVIDENCE Case series, Level IV.
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Affiliation(s)
- M M Schneider
- Department of Orthopaedic Surgery, Traumatology and Sports Medicine, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany. .,Orthopaedic Surgery, Schulthess Clinic, Zurich, Switzerland.
| | - M Balke
- Sportsclinic Cologne - Practice for Sportstraumatology, Cologne Merheim Medical Center (CMMC), Witten/Herdecke University, Ostmerheimer Str. 200, 51109, Cologne, Germany
| | - P Koenen
- Department of Orthopaedic Surgery, Traumatology and Sports Medicine, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany
| | - M Fröhlich
- Department of Orthopaedic Surgery, Traumatology and Sports Medicine, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany
| | - A Wafaisade
- Department of Orthopaedic Surgery, Traumatology and Sports Medicine, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany
| | - B Bouillon
- Department of Orthopaedic Surgery, Traumatology and Sports Medicine, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany
| | - M Banerjee
- Department of Orthopaedic Surgery, Traumatology and Sports Medicine, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany
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Affiliation(s)
- Meenakshi Banerjee
- From the Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington
| | - Sidney W Whiteheart
- From the Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington.
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Morozov AY, Banerjee M, Petrovskii SV. Long-term transients and complex dynamics of a stage-structured population with time delay and the Allee effect. J Theor Biol 2016; 396:116-24. [PMID: 26921467 DOI: 10.1016/j.jtbi.2016.02.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 09/03/2015] [Revised: 01/27/2016] [Accepted: 02/12/2016] [Indexed: 10/22/2022]
Abstract
Traditionally, mathematical modeling in population ecology is mainly focused on asymptotic behavior of the model, i.e. as given by the system attractors. Recently, however, transient regimes and especially long-term transients have been recognized as playing a crucial role in the dynamics of ecosystems. In particular, long-term transients are a potential explanation of ecological regime shifts, when an apparently healthy population suddenly collapses and goes extinct. In this paper, we show that the interplay between delay in maturation and a strong Allee effect can result in long-term transients in a single species system. We first derive a simple 'conceptual' model of the population dynamics that incorporates both a strong Allee effect and maturation delay. Unlike much of the previous work, our approach is not empirical since our model is derived from basic principles. We show that the model exhibits a high complexity in its asymptotic dynamics including multi-periodic and chaotic attractors. We then show the existence of long-term transient dynamics in the system, when the population size oscillates for a long time between locally stable stationary states before it eventually settles either at the persistence equilibrium or goes extinct. The parametric space of the model is found to have a complex structure with the basins of attraction corresponding to the persistence and extinction states being of a complicated shape. This impedes the prediction of the eventual fate of the population, as a small variation in the maturation delay or the initial population size can either bring the population to extinction or ensure its persistence.
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Affiliation(s)
- A Yu Morozov
- Department of Mathematics, University of Leicester, LE1 7RH, UK
| | - M Banerjee
- Department of Mathematics and Statistics, Indian Institute of Technology Kanpur, Kanpur, India.
| | - S V Petrovskii
- Department of Mathematics, University of Leicester, LE1 7RH, UK
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Wafaisade A, Paffrath T, Lefering R, Ludwig C, Fröhlich M, Mutschler M, Banerjee M, Bouillon B, Probst C. Patterns of early resuscitation associated with mortality after penetrating injuries. Br J Surg 2015; 102:1220-8; discussion 1228. [PMID: 26267604 DOI: 10.1002/bjs.9869] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 08/31/2014] [Accepted: 05/12/2015] [Indexed: 01/31/2023]
Abstract
BACKGROUND Penetrating injuries are rare in European populations so their management represents a particular challenge. The aim was to assess early therapeutic aspects that are associated with favourable outcomes in patients with penetrating trauma. METHODS Patients with penetrating injuries documented from 2009 to 2013 in the TraumaRegister DGU® were analysed. Patients with a primary admission and an Injury Severity Score (ISS) of at least 9 were included. The Revised Injury Severity Classification (RISC) II score was used for mortality prediction, and a standardized mortality ratio (SMR) calculated per hospital. Hospitals with favourable outcome (SMR below 1) were compared with those with poor outcome (SMR 1 or more). RESULTS A total of 50 centres had favourable outcome (1242 patients; observed mortality rate 15.7 per cent) and 34 centres had poor outcome (918 patients; observed mortality rate 24.4 per cent). Predicted mortality rates according to RISC-II were 20.4 and 20.5 per cent respectively. Mean(s.d.) ISS values were 22(14) versus 21(14) (P = 0.121). Patients in the favourable outcome group had a significantly shorter time before admission to hospital and a lower intubation rate. They received smaller quantities of intravenous fluids on admission to the emergency room, but larger amounts of fresh frozen plasma, and were more likely to receive haemostatic agents. A higher proportion of patients in the favourable outcome group were treated in a level I trauma centre. Independent risk factors for hospital death following penetrating trauma identified by multivariable analysis included gunshot injury mechanism and treatment in non-level I centres. CONCLUSION Among penetrating traumas, gunshot injuries pose an independent risk of death. Treatment of penetrating trauma in a level I trauma centre was significantly and independently associated with lower hospital mortality.
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Affiliation(s)
- A Wafaisade
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
| | - T Paffrath
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
| | - R Lefering
- IFOM - Institute for Research in Operative Medicine, University of Witten/Herdecke, Cologne, Germany
| | - C Ludwig
- Department of Thoracic Surgery, Lung Clinic, Hospital of Cologne, University of Witten/Herdecke, Cologne, Germany
| | - M Fröhlich
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
| | - M Mutschler
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
| | - M Banerjee
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
| | - B Bouillon
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
| | - C Probst
- Department of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne-Merheim Medical Centre, Cologne, Germany
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Siddiqui S, Ahmad E, Gupta M, Rawat V, Shivnath N, Banerjee M, Khan MS, Arshad M. Cissus quadrangularis Linn exerts dose-dependent biphasic effects: osteogenic and anti-proliferative, through modulating ROS, cell cycle and Runx2 gene expression in primary rat osteoblasts. Cell Prolif 2015; 48:443-54. [PMID: 26079044 DOI: 10.1111/cpr.12195] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 04/02/2015] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES This report highlights phytoconstituents present in Cissus quadrangularis (CQ) extract and examines biphasic (proliferative and anti-proliferative) effects of its extract on bone cell proliferation, differentiation, mineralization, ROS generation, cell cycle progression and Runx2 gene expression in primary rat osteoblasts. MATERIALS AND METHODS Phytoconstituents were identified using gas chromatography-mass spectroscopy (GC-MS). Osteoblasts were exposed to different concentrations (10-100 μg/ml) of CQ extract and cell proliferation and cell differentiation were investigated at different periods of time. Subsequently, intracellular ROS intensity, apoptosis and matrix mineralization of osteoblasts were evaluated. We performed flow cytometry for DNA content and real-time PCR for Runx2 gene expression analysis. RESULTS CQ extract's approximately 40 bioactive compounds of fatty acids, hydrocarbons, vitamins and steroidal derivatives were identified. Osteoblasts exposed to varying concentrations of extract exhibited biphasic variation in cell proliferation and differentiation as a function of dose and time. Moreover, lower concentrations (10-50 μg/ml) of extract slightly reduced ROS intensity, although they enhanced matrix mineralization, DNA content in S phase of the cell cycle, and levels of Runx2 expression. However, higher concentrations (75-100 μg/ml) considerably induced the ROS intensity and nuclear condensation in osteoblasts, while it reduced mineralization level, proportion of cells in S phase and Runx2 level of the osteogenic gene. CONCLUSIONS These findings suggest that CQ extract revealed concentration-dependent biphasic effects, which would contribute notably to future assessment of pre-clinical efficacy and safety studies.
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Affiliation(s)
- S Siddiqui
- Molecular Endocrinology Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - E Ahmad
- Department of Biological Sciences, School of Pharmaceutical Sciences, Sao Paulo State University - UNESP, Araraquara, Sao Paulo, 14801-902, Brazil
| | - M Gupta
- Molecular Endocrinology Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - V Rawat
- Molecular Endocrinology Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - N Shivnath
- Molecular Endocrinology Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - M Banerjee
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - M S Khan
- Department of Biosciences, Integral University, Lucknow, Uttar Pradesh, 226007, India
| | - M Arshad
- Molecular Endocrinology Laboratory, Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
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Nair-Gupta P, Baccarini A, Tung N, Seyffer F, Florey O, Huang Y, Banerjee M, Overholtzer M, Roche PA, Tampé R, Brown BD, Amsen D, Whiteheart SW, Blander JM. TLR signals induce phagosomal MHC-I delivery from the endosomal recycling compartment to allow cross-presentation. Cell 2015; 158:506-21. [PMID: 25083866 DOI: 10.1016/j.cell.2014.04.054] [Citation(s) in RCA: 234] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 01/08/2014] [Accepted: 04/23/2014] [Indexed: 11/16/2022]
Abstract
Adaptation of the endoplasmic reticulum (ER) pathway for MHC class I (MHC-I) presentation in dendritic cells enables cross-presentation of peptides derived from phagocytosed microbes, infected cells, or tumor cells to CD8 T cells. How these peptides intersect with MHC-I molecules remains poorly understood. Here, we show that MHC-I selectively accumulate within phagosomes carrying microbial components, which engage Toll-like receptor (TLR) signaling. Although cross-presentation requires Sec22b-mediated phagosomal recruitment of the peptide loading complex from the ER-Golgi intermediate compartment (ERGIC), this step is independent of TLR signaling and does not deliver MHC-I. Instead, MHC-I are recruited from an endosomal recycling compartment (ERC), which is marked by Rab11a, VAMP3/cellubrevin, and VAMP8/endobrevin and holds large reserves of MHC-I. While Rab11a activity stocks ERC stores with MHC-I, MyD88-dependent TLR signals drive IκB-kinase (IKK)2-mediated phosphorylation of phagosome-associated SNAP23. Phospho-SNAP23 stabilizes SNARE complexes orchestrating ERC-phagosome fusion, enrichment of phagosomes with ERC-derived MHC-I, and subsequent cross-presentation during infection.
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Affiliation(s)
- Priyanka Nair-Gupta
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Graduate School of Biological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Alessia Baccarini
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Navpreet Tung
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Graduate School of Biological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Fabian Seyffer
- Institute of Biochemistry, Biocenter, Cluster of Excellence-Macromolecular Complexes, Goethe-University Frankfurt, Max-von-Laue Strasse 9, 60438 Frankfurt am Main, Germany
| | - Oliver Florey
- Cell Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Yunjie Huang
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Meenakshi Banerjee
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Michael Overholtzer
- Cell Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Paul A Roche
- Experimental Cell Biology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Robert Tampé
- Institute of Biochemistry, Biocenter, Cluster of Excellence-Macromolecular Complexes, Goethe-University Frankfurt, Max-von-Laue Strasse 9, 60438 Frankfurt am Main, Germany
| | - Brian D Brown
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Derk Amsen
- Department of Hematopoiesis, Sanquin Research and Landsteiner Laboratory, Plesmanlaan 125, 1066CX Amsterdam, the Netherlands
| | - Sidney W Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - J Magarian Blander
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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Vats P, Sagar N, Singh TP, Banerjee M. Association of Superoxide dismutases (SOD1 and SOD2) and Glutathione peroxidase 1 (GPx1) gene polymorphisms with type 2 diabetes mellitus. Free Radic Res 2014; 49:17-24. [PMID: 25283363 DOI: 10.3109/10715762.2014.971782] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder resulting from oxidative stress (OS), the root cause of insulin resistance, β-cell dysfunction, and impaired glucose tolerance. Antioxidant enzymes play key roles in cellular defense and can be used as important biomarkers for T2DM. The present study was undertaken to evaluate three genetic polymorphisms viz. SOD1 + 35A/C, SOD2 + 47C/T, and GPx + 599C/T in 207 T2DM cases and 210 healthy controls from North India. DNA was extracted from blood samples and genotyping was done by PCR-RFLP. Genotypic/allelic frequencies and haplotype/gene-gene interaction analysis were performed using SPSS (version 15.0) and SHEsis (v. online). Except age, all other biochemical parameters showed highly significant association in T2DM cases (P < 0.001). In North Indian population, SOD1 + 35A/C variant was monomorphic. Genotype/allele frequencies of SOD2 + 47C/T polymorphism and carriage rate of 'C' allele showed significant association (p < 0.05, < 0.001; OR 2.434). Genotype/allele frequencies of GPx1 + 599C/T and carriage rate showed no association although the odds ratio of GPx1 'C' allele indicated a 1.362 times higher risk of T2DM. SOD2 'CT' and GPx1 'CC' genotypes showed maximum association with biochemical parameters. Haplotype/gene-gene interaction analysis in controls and cases showed that SOD2 + 47C/T and GPx1 + 599C/T were in linkage disequilibrium (D: 0.168; r(2): 0.10) and individuals with this combination had a 1.273 times higher risk [OR; CI (95%)] of developing T2DM. Thus, we conclude that it is essential to assess the combinatorial association of gene variants with T2DM in order to identify risk haplotypes in a population.
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Affiliation(s)
- P Vats
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow , Lucknow , India
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Banerjee M, White A, Pearson R, Balafsan T, Hama S, Yadav R, France M, Kwok S, Younis N, Soran H. Screening for cardiovascular risk factors in patients admitted for acute coronary syndrome. Int J Clin Pract 2014; 68:929-30. [PMID: 24942309 DOI: 10.1111/ijcp.12431] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- M Banerjee
- Wirral Diabetes & Endocrine Unit, Wirral University Teaching Hospitals NHS Foundation Trust, Wirral, UK; Cardiovascular Research Group, University of Manchester, Manchester, UK.
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Sachdev P, Banerjee M, Mukherjee G. Magnetic and Microstructural Studies on PVA/Co Nanocomposite Prepared by Ion Beam Sputtering Technique. DEFENCE SCI J 2014. [DOI: 10.14429/dsj.64.7332] [Citation(s) in RCA: 10] [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: 11/13/2022]
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