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Chakraborty N, Mitra R, Dasgupta D, Ganguly R, Acharya K, Minkina T, Popova V, Churyukina E, Keswani C. Unraveling lipid peroxidation-mediated regulation of redox homeostasis for sustaining plant health. Plant Physiol Biochem 2024; 206:108272. [PMID: 38100892 DOI: 10.1016/j.plaphy.2023.108272] [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] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/12/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Lipid peroxidation (LPO) is a complex process that, depending on the context, can either result in oxidative injury or promote redox homeostasis. LPO is a series of reactions in which polyunsaturated fatty acids are attacked by free radicals that result in the synthesis of lipid peroxides. LPO can alter membrane fluidity and operation and produce secondary products that amplify oxidative stress. LPO can activate cellular signaling pathways that promote antioxidant defense mechanisms that provide oxidative stress protection by elevating antioxidant enzyme action potentials. Enzymatic and nonenzymatic mechanisms tightly regulate LPO to prevent excessive LPO and its adverse consequences. This article emphasizes the dual nature of LPO as a mechanism that can both damage cells and regulate redox homeostasis. In addition, it also highlights the major enzymatic and nonenzymatic mechanisms that tightly regulate LPO to prevent excessive oxidative damage. More importantly, it emphasizes the importance of understanding the cellular and biochemical complexity of LPO for developing strategies targeting this process for efficient management of plant stress.
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Affiliation(s)
- Nilanjan Chakraborty
- Department of Botany, Scottish Church College (affiliated to University of Calcutta), Kolkata, 700006, India
| | - Rusha Mitra
- Department of Botany, Scottish Church College (affiliated to University of Calcutta), Kolkata, 700006, India
| | - Disha Dasgupta
- Department of Botany, Scottish Church College (affiliated to University of Calcutta), Kolkata, 700006, India
| | - Retwika Ganguly
- Department of Botany, Scottish Church College (affiliated to University of Calcutta), Kolkata, 700006, India
| | - Krishnendu Acharya
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, 700019, India
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, 344000, Russia
| | - Victoria Popova
- Rostov Research Institute of Obstetrics and Pediatrics, Rostov-on-Don, 344012, Russia
| | - Ella Churyukina
- Rostov State Medical University, Rostov-on-Don, 344000, Russia
| | - Chetan Keswani
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, 344000, Russia.
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Rahman A, Hasani A, Decconda A, Esposito M, Mitra R, Wallach F, Shah S. Chagas Disease Masquerading as Cardiac Sarcoidosis. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.596] [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: 04/05/2023] Open
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Maitra S, Mitra R, Nath TK. Aqueous Mg-Ion Supercapacitor and Bi-Functional Electrocatalyst Based on MgTiO₃ Nanoparticles. J Nanosci Nanotechnol 2021; 21:6217-6226. [PMID: 34229824 DOI: 10.1166/jnn.2021.19321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Supercapacitor and hydrogen-based fuel cells are cheap and environmental-friendly next-generation energy storage devices that are intended to replace Lithium-ion batteries. Metal oxide nanostructures having perovskite crystal structure have been found to exhibit unique electrochemical properties owing to its unique electronic band structure and multiple redox-active ions. Herein, MgTiO₃ nanoparticles (MTO-1) were synthesized by wet-chemical sol-gel technique with an average particle size of 50-55 nm, which exhibited superior supercapacitor performance of capacitance (C) = 25 F/g (at 0.25 A/g), energy density (ED) = 17 Wh/kg, power density (PD) = 275 W/kg and 82.41% capacitance retention (after 1000 cycles). Aqueous 1 M Mg(ClO₄)₂ solution was used as the electrolyte. MTO-1 revealed an overpotential () = 1.329 V and Tafel slope (b) = 374 mV/dec towards Oxygen Evolution Reaction (OER) electrocatalyst and exhibited = 0.914 V and b = 301.4 mV/dec towards Hydrogen Evolution Reaction (HER) electrocatalyst, both in presence of alkaline 1 M KOH solution, making these MgTiO₃ nanoparticles very promising for potential use in various technologically important electrochemical applications.
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Affiliation(s)
- S Maitra
- School of Nano-Science and Technology, Indian Institute of Technology Kharagpur, 721302, West Bengal, India
| | - R Mitra
- School of Nano-Science and Technology, Indian Institute of Technology Kharagpur, 721302, West Bengal, India
| | - T K Nath
- School of Nano-Science and Technology, Indian Institute of Technology Kharagpur, 721302, West Bengal, India
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Maitra S, Mitra R, Nath TK. Molten Salt Synthesized MgNiO₂ Micro/Nano-Particles for High Energy Density Supercapacitor and Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Medium. J Nanosci Nanotechnol 2021; 21:5556-5568. [PMID: 33980365 DOI: 10.1166/jnn.2021.19457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In recent years, solid solutions have shown promising results as functional materials for different applications. These materials have tunable physiochemical properties and electronic properties, and are being intensively studied for next generation electrochemical charge storage as well as noble metal free low cost electrocatalyts. In the present work, Magnesium Nickel Oxide (MgNiO₂) solid solution is prepared by molten salt synthesis. MgNiO₂ particles having octahedron shaped morphology with size of 550 nm with an agglomerative behavior was observed through morphological studies. Raman studies revealed presence of three two-phonon modes as well as two one-phonon modes, which confirm the phase purity of MgNiO₂ sample. MgNiO₂ particles behaved as a promising supercapacitor candidate by exhibiting a large specific capacitance of 76 F/g. It also revealed electrochemical stability over an expansive potential range under the presence of 0.5 mol L-1Sodium Sulfate (Na₂SO₄) electrolyte, having a high energy density of nearly 51 Wh/kg with a power density of nearly 825 w/kg. Further, MgNiO₂ particle showed improved electrocatalytic potential towards Hydrogen Evolution Reaction (HER) in 1 mol L-1 Potassium Hydroxide (KOH) alkaline medium, by demonstrating an overpotential of 0.636 V with a Tafel slope of 0.22205 v/dec. Based on these observed promising results, it can be conclusively inferred that MgNiO₂ solid solution is a potential candidate for environmental friendly high voltage supercapacitor and HER electrocatalyst applications.
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Affiliation(s)
- S Maitra
- School of Nano-Science and Technology, Indian Institute of Technology Kharagpur, 721302, West Bengal, India
| | - R Mitra
- School of Nano-Science and Technology, Indian Institute of Technology Kharagpur, 721302, West Bengal, India
| | - T K Nath
- School of Nano-Science and Technology, Indian Institute of Technology Kharagpur, 721302, West Bengal, India
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Ashokan A, Hegde A, Mitra R. Corrigendum to "Short-term environmental enrichment is sufficient to counter stress-induced anxiety and associated structural and molecular plasticity in basolateral amygdala" [Psychoneuroendocrinology 69 (2016) 189-196]. Psychoneuroendocrinology 2021; 132:105370. [PMID: 34419312 DOI: 10.1016/j.psyneuen.2021.105370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 11/29/2022]
Affiliation(s)
- A Ashokan
- Nanyang Technological University, Singapore
| | - A Hegde
- Nanyang Technological University, Singapore
| | - R Mitra
- Nanyang Technological University, Singapore.
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Moitra S, Moitra S, Ghosh AK, Sengupta S, Das PK, Das A, Mitra R, Murgia N, Usmani OS. Reference values of impulse oscillometry (IOS) for healthy Indian adults. Int J Tuberc Lung Dis 2021; 24:536-539. [PMID: 32398207 DOI: 10.5588/ijtld.19.0796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Subhabrata Moitra
- ISGlobal, Barcelona, Spain, CIBER Epidemiologia y Salud Publica (CIBERSP), Barcelona, Spain, Universitat Pompeu Fabra, Barcelona, Spain
| | - Saibal Moitra
- Division of Pulmonary Medicine, Charnock Hospital, Kolkata, India, Department of Pneumology, Allergy & Asthma Research Centre, Kolkata, India
| | - A K Ghosh
- Department of Statistics, Presidency University, Kolkata, India
| | - S Sengupta
- Division of Pulmonary Medicine, Charnock Hospital, Kolkata, India
| | - P K Das
- Division of Pulmonary Medicine, Charnock Hospital, Kolkata, India, Department of Pneumology, Allergy & Asthma Research Centre, Kolkata, India
| | - A Das
- Department of Respiratory Medicine, Rabindranath Tagore International Institute of Cardiac Sciences, Kolkata, India
| | - R Mitra
- Department of Pulmonary Medicine, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, India
| | - N Murgia
- Department of Medicine, University of Perugia, Perugia, Italy
| | - O S Usmani
- National Heart and Lung Institute, Imperial College London, London, UK, ,
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Quadros K, Baykaner T, Thosani A, Mitra R, Ferguson J, Brodt C, Zei P. SAFETY AND EFFICACY OF MINIMAL FLUOROSCOPY APPROACH FOR CATHETER ABLATION IN ATRIAL FIBRILLATION: A MULTI CENTER, PROSPECTIVE REGISTRY. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.575] [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: 11/28/2022] Open
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8
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Menown IBA, De Silva R, Mitra R, Balachandran K, More R, Spyrou N, Zaman A, Raja Y, Tulwar S, Sinha M, Glover J, Clifford P, Ordoubadi F, Elghamaz A. P2797Clinical outcomes of an ultra-thin strut sirolimus-eluting stent with biodegradable polymer in all-comers patients undergoing coronary intervention. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1110] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Thin stent struts may be associated with reduced vessel injury and use of biodegradable polymers may further improve long term outcomes. However, data with earlier stents has been inconsistent; thus further studies with newer devices are needed.
Purpose
To evaluate the efficacy and safety of a new ultra-thin (65um) strut cobalt chromium sirolimus-eluting stent with a hybrid design (closed cell at ends and open cells in middle to reduce edge injury and optimise conformability) in all-comers patients undergoing percutaneous coronary intervention (PCI).
Methods
We enrolled 752 patients from 14 sites undergoing PCI into a prospective, non-randomised, multi-centre, open-label, observational registry. Inclusion of patients with complex anatomy (long stent lengths, bifurcations and chronic total occlusions) was encouraged. Clinical follow-up was scheduled at 1, 9, 12 and 24 months. The primary endpoint was incidence of major adverse cardiac events (MACE) - cardiac death, non-fatal myocardial infarction (MI), or target vessel revascularization (TVR) - at 9 months.
Results
Mean patient age was 64.7±12.2 years, 20.7% had diabetes, 58.8% had dyslipidaemia, 40.4% had multi-vessel disease, 22% had previous PCI, 4.7% had previous coronary-artery bypass graft, and 19.6% had a clinical history of previous MI. Mean lesion length was 25.7±17.3 mm. The primary endpoint of cumulative MACE up to 9 months (from 624 patients reaching 9 months follow-up) occurred in 12 patients (1.92%), including 6 (0.96%) cardiac death, 5 (0.80%) MI and 6 (0.96%) clinically indicated TVR. Definite stent thrombosis was reported in 3 patients (0.48%) and probable stent thrombosis in 2 patients (0.32%).
Conclusions
Use of an ultra-thin strut biodegradable polymer sirolimus-eluting stent in all-comers patients undergoing PCI was associated with good clinical efficacy and safety.
Acknowledgement/Funding
Meril Life
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Affiliation(s)
- I B A Menown
- Craigavon Cardiac Centre, Craigavon, United Kingdom
| | - R De Silva
- Bedford Hospital, Bedford, United Kingdom
| | - R Mitra
- University Hospital of Wales, Cardiff, United Kingdom
| | | | - R More
- Blackpool Victoria Hospital, Blackpool, United Kingdom
| | - N Spyrou
- Royal Berkshire Hospital, Reading, United Kingdom
| | - A Zaman
- Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Y Raja
- Sunderland Royal Hospital, Sunderland, Tyne & Wear, United Kingdom
| | - S Tulwar
- Royal Bournemouth Hospital, Bournemouth, United Kingdom
| | - M Sinha
- Salisbury Hospital NHS Trust, Salisbury, United Kingdom
| | - J Glover
- Basingstoke and North Hamphire Hospital, Basingstoke, United Kingdom
| | - P Clifford
- Wycombe Hospital, High Wycombe, United Kingdom
| | - F Ordoubadi
- Manchester Royal Infirmary, Manchester, United Kingdom
| | - A Elghamaz
- Northwick Park Hospital, Harrow, United Kingdom
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Niclou S, Fritah S, Sarmini M, Jiang W, Muller A, Dieterle M, Mitra R, Golebiewska A, Zhao Z, Azuaje F. SP-0654 Transcriptional response to temozolomide in Glioblastoma reveals critical role of long non-coding RNAs. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31074-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Menown IBA, De Silva R, Mitra R, Balachandran K, More R, Spyrou N, Zaman A, Raja Y, Tulwar S, Sinha M, Glover J, Clifford P, Ordoubadi F, Elghamaz A. P1667Efficacy and safety of an ultra-thin strut sirolimus-eluting stent with biodegradable polymer in all-comers patients undergoing coronary intervention. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- I B A Menown
- Craigavon Area Hospital, Craigavon Cardiac Centre, Craigavon, United Kingdom
| | - R De Silva
- Bedford Hospital, Cardiology, Bedford, United Kingdom
| | - R Mitra
- University Hospital of Wales, Cardiff, United Kingdom
| | | | - R More
- Blackpool Victoria Hospital, Blackpool, United Kingdom
| | - N Spyrou
- Royal Berkshire Hospital, Reading, United Kingdom
| | - A Zaman
- Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Y Raja
- Sunderland Royal Hospital, Sunderland, United Kingdom
| | - S Tulwar
- Royal Bournemouth Hospital, Bournemouth, United Kingdom
| | - M Sinha
- Salisbury Hospital NHS Trust, Salisbury, United Kingdom
| | - J Glover
- Basingstoke and North Hamphire Hospital, Basingstoke, United Kingdom
| | - P Clifford
- Wycombe Hospital, High Wycombe, United Kingdom
| | - F Ordoubadi
- Manchester Royal Infirmary, Manchester, United Kingdom
| | - A Elghamaz
- Northwick Park Hospital, Harrow, United Kingdom
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Rodriguez-Aguayo C, Bayraktar E, Ivan C, Fuentes-Mattei E, Ozpolat B, Mitra R, Sood A, Calin G, Lopez-Berestein G. Regulation of hnRNPA1 by microRNAs controls the miR-18a–K-RAS axis in chemotherapy-resistant ovarian cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy047.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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12
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Zei P, Thosani A, Mitra R, Ferguson J, Brodt C, Sakarovitch C, O'riordan G. P1405Minimal fluoroscopy atrial fibrillation catheter ablation: a prospective multicenter registry. Europace 2017. [DOI: 10.1093/ehjci/eux158.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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13
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Bindu B, Mitra R, Singh G. Persistent hypertension after posterior fossa surgery: A case series. Journal of Neuroanaesthesiology and Critical Care 2017. [DOI: 10.1055/s-0038-1646209] [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: 10/27/2022] Open
Affiliation(s)
- B. Bindu
- Department of Neuroanaesthesiology and Critical Care, AIIMS, New Delhi, India
| | - R. Mitra
- Department of Neuroanaesthesiology and Critical Care, AIIMS, New Delhi, India
| | - G. Singh
- Department of Neuroanaesthesiology and Critical Care, AIIMS, New Delhi, India
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Mitra R, Thiele M, Octa-Smolin F, Letzel MC, Niemeyer J. A bifunctional chiral [2]catenane based on 1,1'-binaphthyl-phosphates. Chem Commun (Camb) 2016; 52:5977-80. [PMID: 27058367 DOI: 10.1039/c6cc01980c] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel [2]catenane was synthesised by ring-closing metathesis from a Ca-bisphosphate template. The resulting interlocked structure features two chiral 1,1'-binaphthyl-phosphates, leading to a bifunctional catenane structure. Initial binding studies point at the applicability of such mechanically interlocked bisphosphates as artificial receptors for dicationic guest molecules.
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Affiliation(s)
- R Mitra
- Institute of Organic Chemistry, Department of Chemistry, University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
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Koe AS, Ashokan A, Mitra R. Short environmental enrichment in adulthood reverses anxiety and basolateral amygdala hypertrophy induced by maternal separation. Transl Psychiatry 2016; 6:e729. [PMID: 26836417 PMCID: PMC4872421 DOI: 10.1038/tp.2015.217] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/18/2015] [Accepted: 12/02/2015] [Indexed: 12/22/2022] Open
Abstract
Maternal separation during early childhood results in greater sensitivity to stressors later in adult life. This is reflected as greater propensity to develop stress-related disorders in humans and animal models, including anxiety and depression. Environmental enrichment (EE) reverses some of the damaging effects of maternal separation in rodent models when provided during peripubescent life, temporally proximal to the separation. It is presently unknown if EE provided outside this critical window can still rescue separation-induced anxiety and neural plasticity. In this report we use a rat model to demonstrate that a single short episode of EE in adulthood reduced anxiety-like behaviour in maternally separated rats. We further show that maternal separation resulted in hypertrophy of dendrites and increase in spine density of basolateral amygdala neurons in adulthood, long after initial stress treatment. This is congruent with prior observations showing centrality of basolateral amygdala hypertrophy in anxiety induced by stress during adulthood. In line with the ability of the adult enrichment to rescue stress-induced anxiety, we show that enrichment renormalized stress-induced structural expansion of the amygdala neurons. These observations argue that behavioural plasticity induced by early adversity can be rescued by environmental interventions much later in life, likely mediated by ameliorating effects of enrichment on basolateral amygdala plasticity.
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Affiliation(s)
- A S Koe
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - A Ashokan
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - R Mitra
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore,School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore. E-mail:
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Lodge F, Shah A, Mitra R. Progressive breathlessness in a middle-aged man. Heart 2015. [DOI: 10.1136/heartjnl-2014-306029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hussain F, Saydam S, Mitra R, Cinar Y. Experimental study for reducing gas inflow by use of thin spray-on liners in underground coal mines. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/1743286312y.0000000002] [Citation(s) in RCA: 6] [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] [Indexed: 10/31/2022]
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Mitra R, Stallard H. Who should we target for exercise training in different left ventricular dysfunction groups? Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5779] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mitra R, Crawford S, Barton AF, Briggs S, Orbell JD. A benign approach to the preparation of freshwater bryozoan statoblasts for scanning electron microscopy (SEM) imaging. New Zealand Journal of Zoology 2013. [DOI: 10.1080/03014223.2012.672436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mitra R, Barton AF, Briggs S, Orbell JD. Identification of five bryozoan species in the Northern Mallee Pipeline, Australia. New Zealand Journal of Zoology 2013. [DOI: 10.1080/03014223.2012.674538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Karmakar PS, Chatterjee S, Mitra R, Bari R, Ray MK, Ghosh A, Ghosh A. Staphylococcal septicaemia associated with peripheral neuropathy in three different clinical settings. J Assoc Physicians India 2013; 61:206-209. [PMID: 24475686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Among the various etiologies of peripheral neuropathy, S. aureus is a rare cause that is not even mentioned in standard textbooks. Here we like to report three clinical scenarios where patients with different manifestations of S. aureus infection developed peripheral neuropathy presenting as quadriparesis, which subsided gradually with control of infection and supportive care. No other known causes of peripheral neuropathy were present in these cases.
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Affiliation(s)
- P S Karmakar
- Department of Medicine, Institute of Post Graduate Medical Education and Research, Kolkata-700 020
| | - S Chatterjee
- JNM College of Medicine, Kalyani, Nadia, West Bengal
| | - R Mitra
- Department of Pulmonary Medicine, Institute of Post Graduate Medical Education And Research, Kolkata - 700020
| | - R Bari
- Department of Medicine, Institute of Post Graduate Medical Education And Research, Kolkata - 700020
| | - M K Ray
- Department of Medicine, Institute of Post Graduate Medical Education And Research, Kolkata - 700020
| | - A Ghosh
- Department of Medicine, Institute of Post Graduate Medical Education And Research, Kolkata - 700020
| | - A Ghosh
- Department of Medicine, Institute of Post Graduate Medical Education And Research, Kolkata - 700020
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Mitra R. The utilization of opiates in pain management: use or abuse. Eur J Phys Rehabil Med 2013; 49:93-96. [PMID: 23575202] [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: 06/02/2023]
Abstract
BACKGROUND Despite governmental regulations, opiate medications continue to be abused in some populations. Some clinicians have advocated non-opioid therapy for pain patients that suffer from non-malignant conditions; while others have suggested that chronic benign pain conditions may successfully be managed with opiates in non-escalating dosages. AIM The aim of this paper was to review the literature regarding opiate utilization in the acute and chronic pain population. DESIGN Review. SETTING Europe and United States. POPULATION Acute and chronic adult pain patients. METHODS A computer-aided search of several databases--MEDLINE (1966 to July 2012); EMBASE (Elsevier BV, Amsterdam, the Netherlands), 1982 to present; CINAHL (Cumulative Index to Nursing and Allied Health Literature, EBSCO Industries, Glendale, CA), 1982 to July 2012; and all EBM (Evidence-Based Medicine) reviews was performed. The search terms were pain, opioid, opiate and narcotic. RESULTS It is generally accepted that WHO step III opioids are indicated and appropriate in malignant conditions, however the utilization of opiates in non-malignant chronic conditions remains controversial. CONCLUSION Limited data does support the utilization of non-escalating dosages of opiates in patients that are closely monitored in non-malignant conditions. Education in opiate utilization and pain management is insufficient in its current form. CLINICAL REHABILITATION IMPACT Studies demonstrating functional improvements with the utilization of opiate medications are also lacking. Physical Medicine and Rehabilitation researchers therefore have an ideal opportunity to positively influence education, regulation and patient care in this field.
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Affiliation(s)
- R Mitra
- Department of Rehabilitation Medicine, Kansas University School of Medicine, Kansas City, KS 66160, USA.
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Umapathy S, Pawar A, Mitra R, Khuperkar D, Devaraj JP, Ghosh K, Khopkar U. Hla-a and hla-B alleles associated in psoriasis patients from mumbai, Western India. Indian J Dermatol 2012; 56:497-500. [PMID: 22121262 PMCID: PMC3221207 DOI: 10.4103/0019-5154.87128] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Psoriasis, a common autoimmune disorder characterized by T cell-mediated keratinocyte hyperproliferation, is known to be associated with the presence of certain specific Human Leukocyte Antigen (HLA) alleles. AIM To evaluate distribution of HLA-A and HLA-B alleles and hence identify the susceptible allele of psoriasis from patients in Western India. MATERIALS AND METHODS The study design included 84 psoriasis patients and 291 normal individuals as controls from same geographical region. HLA-A and HLA-B typing was done using Serology typing. Standard statistical analysis was followed to identify the odds ratio (OR), allele frequencies, and significant P value using Graphpad software. RESULTS The study revealed significant increase in frequencies of HLA-A2 (OR-3.976, P<0.0001), B8 (OR-5.647, P<0.0001), B17 (OR-5.452, P<0.0001), and B44 (OR-50.460, P<0.0001), when compared with controls. Furthermore, the frequencies of HLA-A28 (OR-0.074, P=0.0024), B5 (OR-0.059, P<0.0001), B12 (OR-0.051, P=0.0002), and B15 (OR-0.237, P=0.0230) were significantly decreased in psoriasis patients. CONCLUSION This study shows the strong association of HLA-A2, B8, and B17 antigens with psoriasis conferring susceptibility to psoriasis patients from Western India, while the antigens HLA-A28, B5, and B12 show strong negative association with the disease.
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Affiliation(s)
- Shankarkumar Umapathy
- National Institute of Immunohaematology, Indian Council of Medical Research, 13 Floor, K.E.M. Hospital, Parel, Mumbai, India
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Ghosh M, Song J, Forster JJ, Mitra R, Mukherjee B. On the equivalence of posterior inference based on retrospective and prospective likelihoods: application to a case-control study of colorectal cancer. Stat Med 2012; 31:2196-208. [PMID: 22495822 DOI: 10.1002/sim.5358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Accepted: 02/08/2012] [Indexed: 11/08/2022]
Abstract
The paper develops a class of priors that leads to equivalent posterior inference for odds ratio parameters based on prospective and retrospective models for categorical response data. The results are applicable to both unmatched and matched case-control studies. The results hold for a general class of link functions for categorical response. The proposed method can accommodate multiple and possibly ordered disease states. The results are applied to the analysis of discrete subtypes in an ongoing case-control study of colorectal cancer. A simulation study illustrates the need for carefully considering prior choices in Bayesian analysis of data collected under retrospective design.
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Affiliation(s)
- M Ghosh
- Department of Statistics, University of Florida, Gainesville, FL, USA
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Kundu S, Mitra R, Chatterjee S, Ghosh A. Young male with systemic lupus erythematosus presenting with sensorineural deafness with immune suppression induced miliary tuberculosis. J Assoc Physicians India 2011; 59:662-664. [PMID: 22479750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A 32 year male presented with deafness and other classical symptoms suggestive of SLE. Subsequent serological investigations confirmed the diagnosis. Renal biopsy showed the presence of SLE induced Grade V nephropathy. Patient was started on NIH protocol for lupus nephritis on which he was doing well. After two years, he presented with symptoms of miliary tuberculosis and was started on ATD. Subsequently, he developed ATD induced hepatotoxicity and had to be switched over to Inj. Streptomycin containing regimen. We thought to share this clinical experience, as we found it a challenge to manage tuberculosis in such a setting, where a fine balance had to be maintained between immunosuppression for SLE and therapy of TB, and an ototoxic drug had to be used in a patient with deafness induced by SLE.
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Affiliation(s)
- S Kundu
- Dept. of Chest Medicine, Institute of Post Graduate Medical Education and Research, Kolkata 700020
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Juneja PK, Ray A, Mitra R. Model Predictive Control of Important Parameters in a Paper Machine Headbox. Indian Chemical Engineer 2011. [DOI: 10.1080/00194506.2011.696369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Parker B, Hogstrom K, Gibbons J, Mitra R, Duhon J, Yang C, Wu H. WE-G-BRC-04: A Hub-and-Spoke Residency Model for Meeting the 2014 ABR Mandate. Med Phys 2011. [DOI: 10.1118/1.3613419] [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: 11/07/2022] Open
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Mishra S, Mitra R. Rational design in suspension rheology of cellular silica. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.08.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
OBJECTIVES The purpose of this study was to investigate the prevalence of complete ponticulus posticus in Indian orthodontic patients. METHODS The presence and types of ponticuli posticus were investigated on 858 lateral cephalograms. RESULTS Complete ponticulus posticus was found in 4.3% of the subjects studied with a male (5.33%) predominance over female in the population (3.76%). CONCLUSIONS Ponticulus posticus is not a rare anomaly and the patient must be told of the implications and importance of detecting ponticulus posticus on a lateral cephalogram. This information can prove beneficial for the diagnosis of head and neck symptoms later.
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Affiliation(s)
- V Sharma
- Division of Orthodontics and Dentofacial Orthopaedics, Department of Dental Surgery, Armed Forces Medical College, Pune - 411040, India.
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Londhe SM, Kumar P, Mitra R, Kotwal A. Efficacy of Second Molar to Achieve Anchorage Control in Maximum Anchorage Cases. Med J Armed Forces India 2010; 66:220-4. [PMID: 27408305 DOI: 10.1016/s0377-1237(10)80041-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Accepted: 05/06/2010] [Indexed: 10/18/2022] Open
Abstract
BACKGROUND The aim of the study was to assess the efficacy of inclusion of second molar in treatment at the outset to reinforce anchorage. METHODS A comparative study comprising of 30 maximum anchorage cases to quantify anchorage loss in two situations was undertaken. Group I consisted of cases in which only first molars were banded and Group II consisted of cases where both first and second molars were banded. A total of seven landmarks were marked and six measurements were recorded on to the pre-treatment and post-treatment lateral cephalogram. RESULT The difference in pre-treatment and post-treatment values of all the variables were statistically significant (p<0.05) except maxillary central incisor vertical movement (U1 VER), implying a significant post-treatment change. Thus in both the treatment approaches U6 and U1 showed a considerable amount of movement in horizontal and vertical direction and there was rotation which brought about change in angular values. CONCLUSION The study has successfully quantified the anchorage loss and brought out the advantages of including second molar in treatment at the outset. Not only the anchorage loss is minimized but inclusion of second molar also helps to maximize incisor retraction and helps control angular movement of molar and incisor. Extra time required for second molar banding is well spent, as the benefits are overwhelming.
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Affiliation(s)
- S M Londhe
- Consultant (Orthodontics), CMDC (SC), Pune-40
| | - P Kumar
- Officer Commanding, MDC Kirkee
| | - R Mitra
- Associate Professor (Dept of Dental Surgery), AFMC, Pune-40
| | - A Kotwal
- Assoc Prof (Dept of Community Medicine), AFMC, Pune-40
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Mitra R, Cuesta-Alonso E, Wayadande A, Talley J, Gilliland S, Fletcher J. Effect of route of introduction and host cultivar on the colonization, internalization, and movement of the human pathogen Escherichia coli O157:H7 in spinach. J Food Prot 2009; 72:1521-30. [PMID: 19681281 DOI: 10.4315/0362-028x-72.7.1521] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Human pathogens can contaminate leafy produce in the field by various routes. We hypothesized that interactions between Escherichia coli O157:H7 and spinach are influenced by the route of introduction and the leaf microenvironment. E. coli O157:H7 labeled with green fluorescent protein was dropped onto spinach leaf surfaces, simulating bacteria-laden raindrops or sprinkler irrigation, and survived on the phylloplane for at least 14 days, with increasing titers and areas of colonization over time. The same strains placed into the rhizosphere by soil infiltration remained detectable on very few plants and in low numbers (10(2) to 10(6) CFU/g fresh tissue) that decreased over time. Stem puncture inoculations, simulating natural wounding, rarely resulted in colonization or multiplication. Bacteria forced into the leaf interior survived for at least 14 days in intercellular spaces but did not translocate or multiply. Three spinach cultivars with different leaf surface morphologies were compared for colonization by E. coli O157:H7 introduced by leaf drop or soil drench. After 2 weeks, cv. Bordeaux hosted very few bacteria. More bacteria were seen on cv. Space and were dispersed over an area of up to 0.3 mm2. The highest bacterial numbers were observed on cv. Tyee but were dispersed only up to 0.15 mm2, suggesting that cv. Tyee may provide protected niches or more nutrients or may promote stronger bacterial adherence. These findings suggest that the spinach phylloplane is a supportive niche for E. coli O157:H7, but no conclusive evidence was found for natural entry into the plant interior. The results are relevant for interventions aimed at minimizing produce contamination by human pathogens.
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Affiliation(s)
- R Mitra
- Department of Entomology and Plant Pathology, Robert E. Kerr Food and Agricultural Products Center, Oklahoma State University, Stillwater, Oklahoma 74078, USA
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Surah S, O'Shea S, Dunn H, Mitra R, Fitzgerald C, Ibrahim F, Sethi G. Utilization of HIV point-of-care testing clinics in general practice and genitourinary medicine services in south-east London. Int J STD AIDS 2009; 20:168-9. [PMID: 19255263 DOI: 10.1258/ijsa.2008.008220] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We compared the utilization of HIV point-of-care testing (POCT) clinics in a general practice and a genitourinary (GU) medicine service. Retrospective case-note review of patients attending the general practice HIV POCT clinic from February 2005 to July 2007 was undertaken. Those attending the GU medicine service over the same period were used as a comparator group. HIV POCT clinics in general practice when compared with GU medicine services were significantly more likely to be utilized by those of Black ethnicity (Black African 61/370 [16.5%] vs. 107/1231 [8.7%], P < 0.001; Black Caribbean 19/370 [5.1%] vs. 11/1231 [0.9%], P < 0.001 and Black Other 20/370 [5.4%] vs. 26/1231 [2.1%], P = 0.001, respectively). Fewer men who have sex with men attended for HIV POCT in general practice than in GU medicine; 82/238 (34.5%) vs. 337/816 (41.3%), P = 0.058. We have demonstrated that HIV POCT clinics in primary care and GU medicine attract different 'at-risk' groups and provide increased opportunity for testing.
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Affiliation(s)
- S Surah
- Department of Genitourinary Medicine, Guy's and St Thomas' NHS Foundation Trust, Guy's, Kings and St Thomas, School of Medicine, Lambeth Palace Road, London SE1 9RT, UK
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Gilbert P, McEwan K, Mitra R, Franks L, Richter A, Rockliff H. Feeling safe and content: A specific affect regulation system? Relationship to depression, anxiety, stress, and self-criticism. The Journal of Positive Psychology 2008. [DOI: 10.1080/17439760801999461] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Das I, Cheng C, Srivastava S, Desrosiers C, Chang S, Hasson B, Jiang Z, Mitra R, Moskvin V. TH-D-AUD B-06: Variability of Low-Z Inhomogeneity Correction in IMRT/SBRT: A Multi-Institutional Collaborative Study. Med Phys 2008. [DOI: 10.1118/1.2962908] [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: 11/07/2022] Open
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Mitra R, Wright S, Anantharaman R, Ionescu A, Smith D. Clinical outcomes when drug-eluting stents are overlapped with bare-metal stents. Cardiovascular Revascularization Medicine 2008. [DOI: 10.1016/j.carrev.2008.02.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Expression profiling of stem cells is challenging due to their small numbers and heterogeneity. The PCR colony (polony) approach has theoretical advantages as an assay for stem cells but has not been applied to small numbers of cells. An assay has been developed that is sensitive enough to detect mRNAs from small numbers of ES cells and from fractions of a single mouse blastocyst. Genes assayed include Oct3, Rex1, Nanog, Cdx2 and GLUT-1. The assay is highly sensitive so that multiple mRNAs from a single blastocyst were easily detected in the same assay. In its present version, the assay is an attractive alternative to conventional RT–PCR for profiling small populations of stem cells. The assay is also amenable to improvements that will increase its sensitivity and ability to analyze many cDNAs simultaneously.
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Affiliation(s)
- C Rieger
- Department of Anatomy and Neurobiology, Washington University School of Medicine, 660 S. Euclid Avenue, St Louis, MO 63110, USA
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Das I, Chang S, Cheng C, Chopra K, Desrosiers C, Hasson B, Jiang Z, Mitra R, Murphy S. WE-C-M100F-06: Dosimetric Comparison of High-Z Inhomogeneity in IMRT: A Collaborative Study. Med Phys 2007. [DOI: 10.1118/1.2761525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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McPhillips MG, Oliveira JG, Spindler JE, Mitra R, McBride AA. Brd4 is required for e2-mediated transcriptional activation but not genome partitioning of all papillomaviruses. J Virol 2006; 80:9530-43. [PMID: 16973557 PMCID: PMC1617221 DOI: 10.1128/jvi.01105-06] [Citation(s) in RCA: 138] [Impact Index Per Article: 7.7] [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] [Indexed: 11/20/2022] Open
Abstract
Bromodomain protein 4 (Brd4) has been identified as the cellular binding target through which the E2 protein of bovine papillomavirus type 1 links the viral genome to mitotic chromosomes. This tethering ensures retention and efficient partitioning of genomes to daughter cells following cell division. E2 is also a regulator of viral gene expression and a replication factor, in association with the viral E1 protein. In this study, we show that E2 proteins from a wide range of papillomaviruses interact with Brd4, albeit with variations in efficiency. Moreover, disruption of the E2-Brd4 interaction abrogates the transactivation function of E2, indicating that Brd4 is required for E2-mediated transactivation of all papillomaviruses. However, the interaction of E2 and Brd4 is not required for genome partitioning of all papillomaviruses since a number of papillomavirus E2 proteins associate with mitotic chromosomes independently of Brd4 binding. Furthermore, mutations in E2 that disrupt the interaction with Brd4 do not affect the ability of these E2s to associate with chromosomes. Thus, while all papillomaviruses attach their genomes to cellular chromosomes to facilitate genome segregation, they target different cellular binding partners. In summary, the E2 proteins from many papillomaviruses, including the clinically important alpha genus human papillomaviruses, interact with Brd4 to mediate transcriptional activation function but not all depend on this interaction to efficiently associate with mitotic chromosomes.
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Affiliation(s)
- M G McPhillips
- Laboratory of Viral Diseases, NIAID, NIH, Building 4, Room 137, 4 Center Dr., MSC 0455, Bethesda, MD 20892-0455, USA
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Cheng CW, Mitra R, Li XA, Das IJ. Dose perturbations due to contrast medium and air in MammoSite®
treatment: An experimental and Monte Carlo study. Med Phys 2005; 32:2279-2287. [PMID: 16121583 DOI: 10.1118/1.1943827] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2004] [Revised: 04/26/2005] [Accepted: 05/04/2005] [Indexed: 11/07/2022] Open
Abstract
In the management of early breast cancer, a partial breast irradiation technique called MammoSite (Proxima Therapeutic Inc., Alpharetta, GA) has been advocated in recent years. In MammoSite, a balloon implanted at the surgical cavity during tumor excision is filled with a radio-opaque solution, and radiation is delivered via a high dose rate brachytherapy source situated at the center of the balloon. Frequently air may be introduced during placement of the balloon and/or injection of the contrast solution into the balloon. The purpose of this work is to quantify as well as to understand dose perturbations due to the presence of a high-Z contrast medium and/or an air bubble with measurements and Monte Carlo calculations. In addition, the measured dose distribution is compared with that obtained from a commercial treatment planning system (Nucletron PLATO system). For a balloon diameter of 42 mm, the dose variation as a function of distance from the balloon surface is measured for various concentrations of a radio-opaque solution (in the range 5%-25% by volume) with a small volume parallel plate ion chamber and a micro-diode detector placed perpendicular to the balloon axis. Monte Carlo simulations are performed to provide a basic understanding of the interaction mechanism and the magnitude of dose perturbation at the interface near balloon surface. Our results show that the radio-opaque concentration produces dose perturbation up to 6%. The dose perturbation occurs mostly within the distances <1 mm from the balloon surface. The Plato system that does not include heterogeneity correction may be sufficient for dose planning at distances > or = 10 mm from the balloon surface for the iodine concentrations used in the MammoSite procedures. The dose enhancement effect near the balloon surface (<1 mm) due to the higher iodine concentration is not correctly predicted by the Plato system. The dose near the balloon surface may be increased by 0.5% per cm3 of air. Monte Carlo simulation suggests that the interface effect (enhanced dose near surface) is primarily due to Compton electrons of short range (<0.5 mm). For more accurate dosimetry in MammoSite delivery, the dose perturbation due to the presence of a radio-opaque contrast medium and air bubbles should be considered in a brachytherapy planning system.
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Affiliation(s)
- C W Cheng
- Arizona Oncology Associates, 2625 N. Craycroft Road, Suite 100, Tucson, Arizona 85712, USA.
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Potter DA, Amin C, Mohiuddin A, Badve S, Davidson D, Kesler K, Hanna N, Edenberg H, Einhorn L, Mitra R. Immunological markers of outcome of non-small cell lung cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.7232] [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: 11/20/2022] Open
Affiliation(s)
| | - C. Amin
- Indiana Univ, Indianapolis, IN
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Cheng C, Das I, Mitra R. SU-FF-T-36: MammoSite Dosimetry Under Condition of Insufficient Buildup and the Proximity of the Balloon to the Lung. Med Phys 2005. [DOI: 10.1118/1.1997707] [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: 11/07/2022] Open
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Olch A, Chopra K, Jiang Z, Mitra R, Hasson B, Chang S, Cheng C, Das I. SU-FF-T-136: Correlation Between IMRT Plan and Delivery Quality for 9 Treatment Planning Systems. Med Phys 2005. [DOI: 10.1118/1.1997807] [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: 11/07/2022] Open
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Mitra R, Bagala T, Olch A, Das I, Cheng C, Chopra K, Hasson B, Jiang Z, Murphy S, Lian J, Ahnesjo A. SU-FF-T-70: Dosimetric Comparison of Inhomogeniety Corrections in IMRT Treatment Planning Systems: A Collaborative Study. Med Phys 2005. [DOI: 10.1118/1.1997741] [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: 11/07/2022] Open
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Potter DA, Li L, Badve S, Kesler K, Rieger K, Hanna N, McDonald C, Edenberg H, Einhorn LH, Mitra R. Decreased T cell infiltration and lymphocyte/dendritic cell/monocyte gene expression as well as increased Cyp3A5 mRNA predicts early recurrence of non-small cell lung cancer (NSCLC) following surgical resection. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.7141] [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: 11/20/2022] Open
Affiliation(s)
- D. A. Potter
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - L. Li
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - S. Badve
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - K. Kesler
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - K. Rieger
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - N. Hanna
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - C. McDonald
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - H. Edenberg
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - L. H. Einhorn
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
| | - R. Mitra
- Indiana University, Indianapolis, IN; Regenstrief Institute, Indianapolis, IN
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Suseelan KN, Mitra R, Bhatia CR, Gopalakrishna T. The in vivo synthesis and accumulation of lectin in developing seeds of black gram (Vigna mungo L. Hepper). Plant Foods Hum Nutr 2004; 59:123-128. [PMID: 15678718 DOI: 10.1007/s11130-004-0050-1] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Black gram (Vigna mungo L. Hepper) seed contains two D-galactose-specific lectin species, BGL-I and BGL-II, identified on the basis of elution from ion exchange column and immunochemical cross-reactivity. BGL-I consisted of two monomeric lectins, BGL-I-1 and BGL-1-2, of relative molecular weights 94 and 89 kDa, respectively. BGL-II is another monomeric lectin with a molecular weight of 83 kDa. The in vivo synthesis studies using pulse-chase experiment showed that BGL-II lectin was synthesized as early as 14 days after flowering (DAF). The 94-kDa BGL-I-1 lectin was synthesized around 17 DAF. There was no cotranslational or posttranslational modification of the lectin proteins. The amount of lectin in developing seeds was determined by radial immunodiffusion assay technique. The maximum amount of lectin per seed was found at 28 DAF.
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Affiliation(s)
- K N Suseelan
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay. Mumbai-400 085, India.
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Bhattacharya N, Chhetri MK, Mukherjee KL, Ghosh AB, Samanta BK, Mitra R, Bhattacharya M, Bhattacharya S, Bandopadhyaya T. Can human fetal cortical brain tissue transplant (up to 20 weeks) sustain its metabolic and oxygen requirements in a heterotopic site outside the brain? A study of 12 volunteers with Parkinson's disease. CLIN EXP OBSTET GYN 2003; 29:259-66. [PMID: 12635741] [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: 03/01/2023]
Abstract
BACKGROUND Neural and stem cell transplantation is emerging as a potential treatment for neurodegenerative diseases from Parkinson's to Huntington's disease. Stereotactic placement of dopaminergic neurons in the caudate-putamen (striatum), is being attempted in centers of excellence and has proved to be beneficial. Basic research using cell transplantation indicates that structural development mechanisms seen in immature brains, i.e., fetal brains, can also function in the adult brain. The adult brain consumes 15% of the resting cardiac output for its metabolic needs. While most human tissues can sustain an anaerobic assault for a few minutes up to 30 minutes, a sudden total lack of oxygen supply to the brain cells in an adult will render the person unconscious within five to ten seconds. Our team has been working on the problem of human fetal tissue response to antigenic assault for the last two decades. In the present series, 12 patients with prolonged histories of Parkinsonism, who were not responding to anti-Parkinsonian drugs, and could not afford costly stereotactic surgery or deep brain stimulation and other modalities of recent Parkinson's disease treatment, were enrolled in the study. MATERIALS AND METHOD After obtaining proper informed consents from the patients or their guardians and from the multidisciplinary ethical committee, the patients, varying in age from 45 to 75 years and suffering for many years with Parkinsonism, were enrolled in the heterotopic brain tissue transplant programme. We followed standard antiseptic, aseptic and premedication protocols, after selecting a proposed site of transplantation of the brain in the axillary fold of the skin, under local infiltration anaesthesia. In an adjacent OR, a fetus was collected from a consenting patient undergoing hysterotomy and ligation (before 20 weeks), under general anaesthesia. Within a minute of hysterotomy, the fetal brain tissue was dissected, and under the guidance of the operative microscope, 1 g of fetal cortical brain tissue was dissected and weighed in an electronic machine. The tissue was collected from around 1 cm of the frontal opercula of the developing human fetal brain and grafted in the already dissected and prepared subcutaneous site in the axilla and the skin was closed. Hematological parameters (Hgb; total count, Tc; differential count, Dc; erythocyte sedimentation rate, ESR) were estimated sequentially up to one month. A small portion of the transplanted tissue was retrieved after one to two months, and a serial histological study was done along with a clinical assessment of the disease condition as per the specifications of the Unified Parkinson's Disease Rating Scale. The results were matched with the pre-transplant ratings of the individual cases. Presenting dyskinesia was also rated (0-4), on the basis of objective criteria assessment like walking, putting on a coat, lifting a cup to drink, etc. RESULTS AND ANALYSIS Initially 30 patients suffering from advanced Parkinson's disease (PD) were approached after getting the necessary clearance from the institutional multidisciplinary ethical committee; however, we have been able to arrange transplantation in only 12 cases so far. These patients were evaluated at the pre- and one month post-transplant period by the Unified Parkinson's Disease Rating Scale (0-108) and the minimum score was 40 in the motor portion of the unified scale at the pre-transplant state. Evaluation of the patients after one month revealed mild improvement of the pre-transplant scoring (up to 33.3%) in 41.6% of the cases, and moderate improvement (up to 66.6%) in another 41.6% of the cases. While 16.8% of the cases did not show any improvement from the basal score, i.e., the pre-transplant score, there was a definite sense of well being and rise in weight (2-4 pounds) noted in each case and there was also a reduction of the L-Dopa dosage in 75% of the cases. There was also a 58.3% improvement in the bradykinesia scoring from the pre-transplant level. What is intriguing is the survival, growth and proliferation of the grafted fetal brain tissue in the HLA- and sex-randomized adult axilla without any immunosuppressive support. Not a single histological study of the fetal brain tissues after removal from the axilla showed any signs of graft vs. host or inflammatory reaction (Figures 1-9) but there were features of growth of the transplanted cortical brain tissue along with its different components like neurogenesis, gliogenesis, early neovascularisation and angiogenesis, etc. There was also no systemic leucocytosis or lymphocytosis. DISCUSSION AND CONCLUSION Histological evidence at the transplanted tissue site suggests that fetal cortical brain tissue can sustain life in sex-randomized, HLA-randomized adult hosts, without the support of immuno-suppressive drugs and the tacit support of the blood-CSF and blood-brain barrier and other specific requirements of adult brain cells in the skull. Whether the clinical improvement in PD is transient or long lasting is presently under investigation along with basic questions like, is it due to transplanted fetal dopaminergic or non-dopaminergic neurons or is it the growth factors and the cytokine mediated hitherto unknown reactions causing the clinical improvement.
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Eapen S, Suseelan KN, Tivarekar S, Kotwal SA, Mitra R. Potential for rhizofiltration of uranium using hairy root cultures of Brassica juncea and Chenopodium amaranticolor. Environ Res 2003; 91:127-133. [PMID: 12584014 DOI: 10.1016/s0013-9351(02)00018-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hairy root cultures of Brassica juncea and Chenopodium amaranticolor were developed by genetic transformation using Agrobacterium rhizogenes. The stable, transformed root systems demonstrated a high growth rate of 1.5-3.0 g/g dry weight/day in Murashige and Skoog medium. In the present study, hairy root system was used for removal of uranium from the solution of concentration up to 5,000 microM. The results indicated that the hairy roots could remove uranium from the aqueous solution within a short period of incubation. B. juncea could take up 20-23% of uranium from the solution containing up to 5,000 microM, when calculated on g/g dry weight basis. C. amaranticolor showed a slow and steady trend in taking up uranium, with 13% uptake from the solution of 5,000 microM concentration. Root growth was not affected up to 500 microM of uranium nitrate over a period of 10 days.
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Affiliation(s)
- Susan Eapen
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
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Suseelan KN, Mitra R, Pandey R, Sainis KB, Krishna TG. Purification and characterization of a lectin from wild sunflower (Helianthus tuberosus L.) tubers. Arch Biochem Biophys 2002; 407:241-7. [PMID: 12413497 DOI: 10.1016/s0003-9861(02)00517-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A lectin (HTTL) was isolated from Helianthus tuberosus L. (wild sunflower) tubers using ion-exchange chromatography, gel filtration, and affinity chromatography. The lectin agglutinated both untreated and trypsin-treated rabbit erythrocytes and did not agglutinate human blood cells of groups A, B, and O. The gel filtration showed the native molecular mass of 72 kDa and subunit molecular masses of 17 and 18.5 kDa on 12% SDS-PAGE. The lectin activity was inhibited by D-mannose. The tetrameric protein revealed a unique characteristic by forming a broad zone of protein in native PAGE at pH 8.3, which dissociated into seven subunits of varying e/m ratios on acid gel at pH 4.3. These seven bands revealed two polypeptide species of molecular masses 17 and 18.5 kDa on 12% SDS-PAGE, as in the case of the native protein. The result indicated that of the seven subunits, three were homotetramers of 17 kDa, one was a homotetramer of 18.5 kDa, and three were heterotetramers of 17 and 18.5 kDa. The lectin was thermostable with broad pH optima (pH 4-8) and had no requirement for divalent metal cations for its activity. The amino acid composition showed that the lectin contained higher amounts of glycine, alanine, and lysine, but no methionine. The sugar content was estimated to be 5.3% mannose equivalent. The HTTL was mitogenic to mouse spleen (total) cells at 25 microg/ml concentration. The lectin showed characteristics different from those of the earlier reported H. tuberosus tuber lectins and hence opens up a new avenue to investigate the structure-function relationship of lectin in Helianthus species.
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Affiliation(s)
- K N Suseelan
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
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Freedman G, Price R, Mah D, Milestone B, Movsas B, Horwitz E, Mitra R, Hanks G. Routine use of MRI and CT simulation for treatment planning of intensity modulated radiation therapy (IMRT) in prostate cancer. Int J Radiat Oncol Biol Phys 2001. [DOI: 10.1016/s0360-3016(01)02377-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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