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- 저자 : ( Nihar Ranjan Dash ) (검색결과 3 건)
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Nihar Ranjan Dash,Mohammad Tahseen Al Bataineh 대한당뇨병학회 2021 Diabetes and Metabolism Journal Vol.45 No.1
Background Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease with a high prevalence worldwide, especially among overweight and obese populations. T2DM is multifactorial with several genetic and acquired risk factors that lead to insulin resistance. Mounting evidence indicates that alteration of gut microbiome composition contribute to insulin resistance and inflammation. However, the precise link between T2DM and gut microbiome role and composition remains unknown. Methods We evaluated the metabolic capabilities of the gut microbiome of twelve T2DM and six healthy individuals through shotgun metagenomics using MiSeq platform. Results We identified no significant differences in the overall taxonomic composition between healthy and T2DM subjects when controlling for differences in diet. However, results showed that T2DM enriched in metabolic pathways involved in menaquinone (vitamin K2) superpathway biosynthesis (PWY-5838) as compared to healthy individuals. Covariance analysis between the bacterial genera and metabolic pathways displaying difference in abundance (analysis of variance P<0.05) in T2DM as compared to healthy subjects revealed that genera belonging Firmicutes, Actinobacteria, and Bacteroidetes phyla contribute significantly to vitamin K2 biosynthesis. Further, the microbiome corresponding to T2DM with high glycosylated hemoglobin (HbA1c) (>6.5%) exhibit high abundance of genes involved in lysine biosynthesis and low abundance of genes involved in creatinine degradation as compared to T2DM with lower HbA1c (<6.5%). Conclusion The identified differences in metabolic capabilities provide important information that may eventually lead to the development of novel biomarkers and more effective management strategies to treat T2DM.
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Predictive factors for malignancy in undiagnosed isolated small bowel strictures
( Ujjwal Sonika ),( Sujeet Saha ),( Saurabh Kedia ),( Nihar Ranjan Dash ),( Sujoy Pal ),( Prasenjit Das ),( Vineet Ahuja ),( Peush Sahni ) 대한장연구학회 2017 Intestinal Research Vol.15 No.4
Background/Aims: Patients with small bowel strictures have varied etiologies, including malignancy. Little data are avail able on the demographic profiles and etiologies of small bowel strictures in patients who undergo surgery because of intestinal obstruction but do not have a definitive pre-operative diagnosis. Methods: Retrospective data were analyzed for all patients operated between January 2000 and October 2014 for small bowel strictures without mass lesions and a definite diagnosis after imaging and endoscopic examinations. Demographic parameters, imaging, endoscopic, and histological data were extracted from the medical records. Univariate and multivariate analyses were conducted to identify factors that could differentiate be tween intestinal tuberculosis (ITB) and Crohn’s disease (CD) and between malignant and benign strictures. Results: Of the 7,425 reviewed medical records, 89 met the inclusion criteria. The most common site of strictures was the proximal small intes tine (41.5%). The most common histological diagnoses in patients with small bowel strictures were ITB (26.9%), CD (23.5%), non-specific strictures (20.2%), malignancy (15.5%), ischemia (10.1%), and other complications (3.4%). Patients with malignant strictures were older than patients with benign etiologies (47.6±15.9 years vs. 37.4±16.4 years, P=0.03) and age >50 years had a specificity for malignant etiology of 80%. Only 7.1% of the patients with malignant strictures had more than 1 stricture and 64% had proximally located strictures. Diarrhea was the only factor that predicted the diagnosis of CD 6.5 (95% confidence interval, 1.10-38.25; P=0.038) compared with the diagnosis of ITB. Conclusions: Malignancy was the cause of small bowel strictures in approximately 16% patients, especially among older patients with a single stricture in the proximal location. Empirical therapy should be avoided and the threshold for surgical resection is low in these patients. (Intest Res 2017;15:518-523)
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Saransh Jain,Saurabh Kedia,Sawan Bopanna,Dawesh P Yadav,Sandeep Goyal,Peush Sahni,Sujoy Pal,Nihar Ranjan Dash,Govind Makharia,Simon P. L. Travis,Vineet Ahuja 대한장연구학회 2018 Intestinal Research Vol.16 No.1
Background/Aims: Truelove and Witts criteria have been used to define acute severe colitis since the 1950s. However, hemoglobin(an additional criterion of the definition) levels in the general population in developing countries are lower than in the population of developed countries. We aimed to determine the relevance of Truelove and Witts criteria in the Indianpopulation. Methods: Consecutive patients with acute severe colitis satisfying the Truelove and Witts criteria, hospitalized ata single center between April 2015 and December 2016 were included. All patients received intravenous corticosteroids and 16 required colectomy. The hemoglobin levels at admission were subsequently excluded from the classification criteria, and the effect this had on the criteria for diagnosis was determined. Results: Out of 61 patients of acute severe colitis diagnosed according to the original Truelove and Witts criteria, 12 patients (20%) had 1 additional criterion, 33 (54%) had 2 additionalcriteria and 16 (26%) had 3 or more additional criteria in addition to 6 or more blood stained stools on admission. On excludinghemoglobin as an additional criterion from the Truelove and Witts definition, all patients still met the criteria for acute severecolitis. Conclusions: Truelove and Witts criteria can be used to define acute severe colitis in India, despite lower mean hemoglobinin the native population.
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