Publications by authors named "Rabindra Bhattacharya"

Neoplastic cells of Glioblastoma multiforme (GBM) may or may not show sustained response to temozolomide (TMZ) chemotherapy. We hypothesize that TMZ chemotherapy response in GBM is predetermined in its neoplastic clones via a specific set of mutations that alter relevant pathways. We describe exome-wide enrichment of variant allele frequencies (VAFs) in neurospheres displaying contrasting phenotypes of sustained versus reversible TMZ-responses in vitro.

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Currently, there is no specific medication for essential hypertension (EH), a major form of the condition, in man. As acetyl salicylic acid (aspirin) is reported to stimulate the synthesis of renal (r)-cortexin, an anti-essential hypertensive protein, and, as aspirin is reported to inhibit dermcidin isoform 2 (dermcidin), a causative protein for EH, the role of aspirin in the control of EH in man was studied. Oral administration of 150 mg aspirin/70 kg body weight in subjects with EH was found to reduce both the elevated systolic and diastolic blood pressures to normal levels within 3 h due to the normalization of dermcidin level in these subjects.

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The effect of dermcidin isoform 2 (dermcidin), an environmentally induced stress protein, was investigated on the genesis of diabetes mellitus and hypertension, the two major atherosclerotic risk factors. The role of dermcidin as an atherosclerotic risk factor related to the impaired systemic insulin level was investigated. Dermcidin was prepared by electrophoresis using plasma from the subjects with acute ischemic heart disease.

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Introduction: Excessive aggregation of platelets at the site of plaque rupture on the coronary artery led to the formation of thrombus which is reported to precipitate acute myocardial infarction (AMI). Nitric oxide (NO) has been reported to inhibit platelet aggregation and induce thrombolysis through the in situ formation of plasmin. As the plasma NO level in AMI patients from two different ethnic groups was reduced to 0 µM (median) compared to 4.

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Background: Primary percutaneous coronary intervention represents one of the cornerstone management modalities for patients with acute ST-elevation myocardial infarction and has undergone tremendous growth over the past two decades. This study was aimed to determine the early clinical outcomes of primary percutaneous coronary interventions in a tertiary-level teaching hospital without onsite cardiac surgery backup.

Methods: This was a prospective descriptive study which included all consecutive patients who were admitted for primary percutaneous coronary interventions between March 2011 and January 2013 at the College of Medical Sciences and Teaching Hospital, Bharatpur, Nepal.

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Background: More than 90% of all hypertensive persons are reported to have essential hypertension (EH), a particular form of elevated blood pressure, for which no diagnostic test is currently available. The level of plasma renal (R) cortexin (PRC), a hypotensive protein produced in the kidney cortex cells, was reported to be reduced from 218 nM in the plasma of normotensive persons (NP) to 0 nM in the plasma of patients with EH. The feasibility of using the determination of PRC by enzyme-linked immunosorbent assay (ELISA) as a diagnostic test for EH was investigated.

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The role of stress induced development of Type-1 diabetes mellitus (T1DM) as opposed to autoimmunity remains obscure. It has been reported that a stress induced protein, identified to be dermcidin isoform 2 (dermcidin) inhibited insulin synthesis in both the pancreatic β cells and the hepatic cells. As dermcidin effect could be neutralized by the increased production of systemic nitric oxide (NO), investigations were carried out to determine the feasibility of controlling stress induced T1DM through the neutralization of dermcidin by systemic increase of NO.

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Introduction: Mechanical revascularization by percutaneous coronary interventions has now become an established and preferable method of revascularization in patients with acute coronary syndromes. The aim of the study was to identify the clinical indications for percutaneous coronary interventions and in-hospital outcomes of percutaneous coronary interventions in a tertiary-level hospital without onsite cardiac surgery backup.

Methods: This was a prospective descriptive study.

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Hypertension and diabetes mellitus are considered to be two major atherosclerotic risk factors for coronary artery disease (CAD). A stress-induced protein identified to be dermcidin isoform 2 of Mr. 11 kDa from blood plasma of hypertensive persons when injected (0.

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Overweight is a burning problem of school going children especially in affluent society. So urban children are affected more. Hypertension is a major co-morbidity of overweight.

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Occlusive clot formation in the veins causes venous thrombosis, the site most common in the deep veins of leg, called deep vein thrombosis. The clot can block blood flow and when it breaks off, called an embolism which in turn can damage the vital organs. Venous thrombosis occurs via three mechanisms ie, Virchow's triad.

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Aims And Objective: Cardiac affection in human iummunodeficiency virus (HIV) infection is a recognized entity. Some form of heart disease is demonstrable at autopsy in approximately 40 percent of cases and by echocardiography in approximately 25 percent of patients with HIV. the studies indicate that cardiac involvements associated with HIV are mainly characterized by cardiomyopathy and pericardial disease.

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Hyperglycemia with severe reduction of plasma insulin level is frequently associated with acute ischemic heart disease. Since insulin is reported to be an anti thrombotic humoral factor, the mechanism of the impaired insulin synthesis was investigated. The plasma from the patients with acute myocardial infarction (AMI) was analyzed by SDS-polyacrylamide gel electrophoresis.

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Because kidney tissue damage is associated with both hypertension and impaired nitric oxide (NO) production, we investigated the possibility whether the kidney tissue contains any activator of endothelial NO synthase (eNOS) that could be important in essential hypertension. An activator protein of M(r) 43000 Da for eNOS from the goat kidney cortex homogenate was purified to homogeneity by chromatographic techniques. This activator trivially, called "cortexin," was determined by enzyme-linked immunosorbent assay using anticortexin antibody.

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The role of aspirin-induced NO synthesis in the production of interferon-alpha (IFN-alpha) in leucocytes and the effect of IFN-alpha on platelet aggregation was studied. Treatment of Platelet Rich Plasma (PRP) with the dialyzed supernatant from the leucocyte suspension incubated with 80 microM aspirin resulted in parallel syntheses of NO and IFN-alpha as determined by methemoglobin assay and enzyme linked immunosorbent assay respectively. Incubation of PRP with 10 nM purified IFN-alpha for 40 min resulted in the maximal inhibition of platelet aggregation through the synthesis of NO due to the activation of nitric oxide synthase in platelets by IFN-alpha.

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BACKGROUND: Astrocytic brain tumors are among the most lethal and morbid tumors of adults, often occurring during the prime of life. These tumors form an interesting group of cancer to understand the molecular mechanism of pathogenesis. Histological grading of Astrocytoma based on WHO classification does not provide complete information on the proliferation potential and biological behavior of the tumors.

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