Publications by authors named "Jayanta Choudhury"

The primary pathogen of the Great Barrier Reef sponge Rhopaloeides odorabile, recently identified as a novel strain (NW4327) of Pseudoalteromonas agarivorans, produced collagenase which degraded R. odorabile skeletal fibers. We now report the collagenase of P.

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A Gram-positive, aerobic, non-motile actinomycete (strain MS 3/20) was isolated from the sediment of the Sundarbans mangrove forest in India. On International Streptomyces Project (ISP) medium 2, the isolate produced yellowish brown to red aerial hyphae that carried spiny-surfaced spores in a retinaculum-apertum arrangement. Whole-cell hydrolysate of the strain contained LL-diaminopimelic acid and galactose.

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Background: Hospital re-admissions in decompensated cirrhosis are associated with worse patient outcomes. Hispanics have a disproportionately high prevalence of hepatitis C virus (HCV)-related morbidity and mortality. The goal of this study was to evaluate the factors affecting re-admission rates among Hispanics with HCV-related cirrhosis.

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Article Synopsis
  • Existing methods for detecting polyhydroxyalkanoates (PHA) in halophiles are often inaccurate or necessitate prior PHA production.
  • A new technique involves amplifying a conserved region of the phaC gene in halophiles, tested on various strains from Indian salt pans, revealing 29 strains as positive for this gene.
  • The new method demonstrated higher accuracy than traditional Nile Red staining, confirming that only the phaC-positive strains actively produced PHA in nutrient-deficient conditions.
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Sponge diseases have increased dramatically, yet the causative agents of disease outbreaks have eluded identification. We undertook a polyphasic taxonomic analysis of the only confirmed sponge pathogen and identified it as a novel strain of Pseudoalteromonas agarivorans. 16S ribosomal RNA (rRNA) and gyraseB (gyrB) gene sequences along with phenotypic characteristics demonstrated that strain NW4327 was most closely related to P.

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Objectives: This study attempts to investigate the antimicrobial properties of Kalanchoe blossfeldiana with a particular reference to quorum sensing (QS)-mediated biofilm formation.

Methods: The methanol extract of K. blossfeldiana leaves (MEKB) was evaluated for antimicrobial properties including QS-controlled production of biofilm (including virulence factor, motility and lactone formation) in Pseudomonas aeruginosa.

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Background: Variation in the survival of patients with hepatocellular carcinoma (HCC) is related to racial differences, socioeconomic disparities and treatment options among different populations.

Methods: A retrospective review of the data from medical records of patients diagnosed with HCC were analyzed at an urban tertiary referral teaching hospital and compared to patients in the California Cancer Registry (CCR) - a participant in the Survival Epidemiology and End Results (SEER)program of the National Cancer Institute (NCI). The main outcome measure was overall survival rates.

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Heterotrophic carbon utilizing microbes were acclimatized in the laboratory by inoculating sludge collected from the waste discharge pond of a small-scale rural abattoir in India in a nutrient solution intermittently fed with glucose and ammonium chloride. Cultures of 10 well-developed isolates were selected and grown in a basal medium containing glucose and ammonium chloride. Culture supernatants were periodically analyzed for ammonium nitrogen (NH(4)(+)-N) and chemical oxygen demand (COD).

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Bacterial infections are common in cirrhosis and can lead to life-threatening complications. Sidestream dark-field (SDF) imaging has recently emerged as a noninvasive tool for capturing real-time video images of sublingual microcirculation in critically ill patients with sepsis. The objective of this study was to assess the utility of SDF in determining underlying infection in patients with cirrhosis.

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Unlabelled: The spectrum of nonalcoholic fatty liver disease (NAFLD) includes a nonalcoholic fatty liver (NAFL) and nonalcoholic steatohepatitis (NASH). The specific types and amounts of lipids that accumulate in NAFLD are not fully defined. The free fatty acid (FFA), diacylglycerol (DAG), triacylglycerol (TAG), free cholesterol (FC), cholesterol ester, and phospholipid contents in normal livers were quantified and compared to those of NAFL and NASH, and the distribution of fatty acids within these classes was compared across these groups.

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The effects of leptin, in concentrations seen in obesity, on collagen production and turnover in non-immortalized human hepatic stellate cell (HSC), were unknown. The profibrogenic effects of leptin in these cells were studied. Hepatic stellate cells were obtained from resected livers.

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The global emergence of obesity as an epidemic has made fatty liver disease a public health problem in the Western world. The increased incidence of obesity has been paralleled by an increase in metabolic syndrome in the same cohort of patients. The net consequence of insulin resistance in a large majority of these obese individuals is hepatic steatosis, which over time in a proportion of these patients progresses to steatohepatitis and cirrhosis.

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The prevalence of obesity has reached epidemic proportions in most of the western world. Current estimates suggest that 22.5%of the population of the United States suffers from obesity and is at risk for development of obesity-related complications, including hypertension, coronary artery disease, diabetes, hyperlipidemia,increased predisposition for various cancers, and nonalcoholic fatty liver disease.

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Nonalcoholic fatty liver disease (NAFLD) represents a range of histologic lesions in the liver that occur in individuals who do not consume alcohol in quantities that generally are considered to be harmful. The histologic spectrum of NAFLD includes isolated predominantly macrovesicular steatosis alone at one end and steatohepatitis at the other. Nonalcoholic steatohepatitis can progress to cirrhosis and now also is considered to be a precursor of cryptogenic cirrhosis.

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Treatment of Ascites.

Curr Treat Options Gastroenterol

December 2003

Ascites is the most common complication of cirrhosis and occurs in more than half of all patients with cirrhosis. The development of ascites indicates progression of the underlying cirrhosis and is associated with a 50% 2-year survival rate. Conventional therapies used for the treatment of ascites include sodium restriction (<88 mmol/d), diuretics, and large volume paracentesis (LVP) (>5 L).

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Lymphoma usually presents with painless lymphadenopathy. However, it can also present at an extranodal site. Presentation with skeletal muscle infiltration is relatively uncommon and can be confused with a wide variety of both inflammatory as well as neoplastic conditions.

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