TBI and Tau Loss of Function Both Affect Naïve Ethanol Sensitivity in Drosophila.

Traumatic brain injury (TBI) is associated with alcohol abuse and higher ethanol sensitivity later in life. Currently, it is poorly understood how ethanol sensitivity changes with time after TBI and whether there are sex-dependent differences in the relationship between TBI and ethanol sensitivity. This study uses the fruit fly Drosophila melanogaster to investigate how TBI affects alcohol sensitivity and whether the effects are sex-specific. Our results indicate that flies have a significantly higher sensitivity to the intoxicating levels of ethanol during the acute phase post-TBI, regardless of sex. The increased ethanol sensitivity decreases as time progresses; however, females take longer than males to recover from the heightened ethanol sensitivity. Dietary restriction does not improve the negative effects of alcohol post-TBI. We found that tau mutant flies exhibit a similar ethanol sensitivity to TBI flies. However, TBI increased the ethanol sensitivity of dtauKO mutants, suggesting that TBI and dtau loss of function have additive effects on ethanol sensitivity.

Epidemiology of Inflammatory Bowel Diseases in Nepal.

Introduction Inflammatory bowel diseases (IBD) comprise ulcerative colitis (UC) and Crohn's disease (CD). These are diseases of the gastrointestinal tract without a clear etiology but have strong relationships with underlying factors like genetic susceptibility, environmental factors, and intestinal bacteria. In the east, inflammatory bowel diseases predominantly affect the younger population and have an almost equal gender distribution. With urbanization and the adoption of the western lifestyle, the incidence and prevalence of IBD are increasing in Asia. In this study, we describe the epidemiology of IBD in Nepal. Methods This was an observational study conducted in nine endoscopy centers within Nepal. Two years of data of colonoscopies in these centers were collected retrospectively. IBD was diagnosed by endoscopic examination. The incidence of IBD was calculated as the number of patients with IBD per 1000 colonoscopies per year. The demographic profiles of the patients were also collected. Results A total of 7526 colonoscopies were done in nine centers within the two years study period. IBD was seen in 479 patients (6.3%). The incidence of UC was 23.7 per 1000 colonoscopies per year and the incidence of CD was 1.6 per 1000 colonoscopies per year. UC (87%) was more common than CD (13%). Both UC and CD were mostly seen in the 30 to 40 years age group. In patients with UC, the rectum was the most commonly affected site. Discussion IBD in Nepal affects young males in their thirties. Younger age of affliction with a chronic disease and lack of awareness regarding the symptoms and diagnostic modalities of IBD may result in a delayed diagnosis. The target population must be made aware of the presenting symptoms of IBD and a need for colonoscopic examination for diagnosis. There is also a need for creating a national IBD registry for Nepal.

Barrett's Esophagus in Patients with Gastroesophageal Reflux Disease.

BACKGROUND: Barrett's esophagus a is metaplasia of normal squamous cells that line the lower part of the esophagus and carries a major risk for adenocarcinoma of esophagus. In Asian population, the prevalence of Barrett's esophagus and adenocarcinoma are less common than in Western countries but has been increasing. METHODS: This is a hospital based descriptive study comprising of 120 consecutive patients with symptoms of gastroesophagial reflux disease belonging to both sexes of any age group. The diagnosis of gastroesophagial reflux disease was based on the symptoms like heart burn and regurgitation. Upper gastrointestinal endoscopy was done in all the patients. Four quadrant biopsies were taken from the esophagogastric junction in suspected case of Barrett's esophagus. The diagnosis of Barrett's esophagus was confirmed histopathologically. RESULTS: There were 44.2% males and 55.8% females, age ranging from 22 to 85 years mean being 44.33+13.37. Of them, gastroesophagial reflux disease was mild in 54.16%, moderate in 21.16% and severe in 16.66%. Upper Gastrointestinal endoscopy revealed non erosive gastroesophagial reflux disease in 50%, erosive in 45%, hiatal hernias in 5% and Barrett's esophagus in 1.6%. Both patients with Barrett's esophagus were elderly and had short segment (<3cm) involvement with no evidence of dysplasia or adenocarcinoma histopathologically. CONCLUSIONS: Endoscopic surveillance with detailed inspection and systematic biopsies is recommended for most patients with Barrett's esophagus. Esophageal carcinoma if detected should be treated at the earliest.

Demographic and Clinical Profile in Patients with Liver Cirrhosis in a Tertiary Care Hospital in Central Nepal.

INTRODUCTION: Liver cirrhosis is an important health problem worldwide and is a common disease in Nepal. The profile of cirrhosis may vary due to different factors. This study was undertaken to see the demographic and clinical profiles of patients with cirrhosis of liver attending a tertiary care hospital in Central Nepal. METHODS: Six hundred patients with clinical features, laboratory and sonological findings suggestive of chronic liver dysfunction and endoscopic evidence of portal hypertension were included in the study. Their demographic and clinical profile, endoscopic findings, outcomes during hospitalization were studied. Ethical approval was taken from Institutional Review Committee of College of Medical Sciences. SPSS 20 was used for statistical analysis. RESULTS: The mean age of subjects was 54±11.84 years with 435 males (72.5%) and 165 (27.5%) females. Majority of 203 (33.8%) patients were from Mongol ethnicity followed by 127 (21.2%) Khas. Two hundred and twenty (36.6%) were farmers followed by 169 (28.2%) retired personnel. A total of 338 (56.4 %) patients were from rural areas. The commonest aetiology of cirrhosis was chronic alcohol consumption and seen in 552 (92%) patients. Abdominal distension was commonest presenting sign and observed in 561 (93.5%) patients. Ascites seen in 555 (92.5%) patients was the commonest complication followed by UGI bleed in 326 (54.3%) patients. Gastro-oesophageal varices observed in 345 (57.5%) patients, was the most common endoscopic finding followed by portal gastropathy, peptic ulcer and erosive mucosal diseases. In patient mortality was noted in 92 (15.3 %) patients. CONCLUSIONS: This study highlights the burden of cirrhosis, usually caused by chronic alcohol consumption in Central Nepal. Majority of subjects were male, middle aged, farmers, from rural areas and predominantly observed in some ethnicity like Mongols. Cirrhotic patients usually Keywords: cirrhosis of liver; complications; endoscopy.

Non-Invasive Predictors of Gastro-Oesophageal Varices.

INTRODUCTION: The worldwide accepted tool for screening and monitoring gastro-oesophageal varices in patients with liver cirrhosis is upper gastrointestinal endoscopy. Endoscopy needs clinical expertise and has got its own procedure related complications. Repeated endoscopies may be expensive and patients tend to develop poor compliance. This study was undertaken to establish the role of noninvasive parameters in predicting gastro-esophageal varices. METHODS: Two hundred patients with clinical features, laboratory and sonological findings suggestive of cirrhosis of liver and endoscopic evidence of portal hypertension were included in the study. Blood parameters like serum albumin, international normalized ratio (INR), platelets count and ultrasonography assessments of portal vein diameter and spleen size were compared with presence of gastro-oesophageal varices. RESULTS: At cutoff point of 2.55g/dl, serum albumin had high specificity of 99% whereas platelets count <1,44,000/mm3 had 87.9% sensitivity for presence of oesophageal varices. Sensitivities of 92.72% and 94.5% while specificities of 90% and 75% were detected for presence of oesophageal varices when the cutoff values for portal vein diameter and spleen size were 12.25 mm and 13.9 cm respectively. CONCLUSIONS: Measurements of serum albumin, platelets count, portal vein diameter and spleen size by ultrasonography can be recommended as a non-invasive predictor for gastro-oesophageal varices in cirrhosis of liver. All these non-invasive parameters could be useful to patients with liver cirrhosis with portal hypertension in predicting presence of varices as well as in long-term clinical monitoring and management.