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Biomedical subjects

G Nath

Publications and source records attributed to G Nath.

65 records · Page 4Linked to original sources
PubMed1976

[Treatment of capillary hemangiomas and nevi flammei with light].

A report on the treatment of capillary hemangiomas and nevi flammei using laser or broad-band infrared light to initiate thermal coagulation in the blood-filled vascular spaces, leaving intact the nonaffected overlying skin layers. Clinical experiences with 26 patients treated with equipment developed by the group are discussed.

Capillaries↗
PubMedDate not supplied

Extents of contamination of top milk and their determinants in an urban slum of Varanasi, India.

A community based study to examine the extent of contamination of supplementary milk feeds of 149 children aged 6-24 months was conducted in a semi urban slum of Varanasi, India. Out of 201 children, 149 top milk samples were collected directly from the feeding utensils into a sterile vial and subjected to bacteriological analysis. Overall, 53.7% of milk samples were contaminated by bacteria and among them 16.1% were potentially enteropathogenic in nature. The distribution of pathogens was E. coli (13.4%), Klebsiella spp (5.4%), Enterobacter spp. (5.4%), Pseudomonas aeruginosa (4.7%), Shigella spp. (2.7%) and others (22.1%). The rate of contamination was significantly higher (p < 0.001) in lower income group (73.4%), lower caste (69.6%) and in case of illiterate mothers (69.3%). Bivariate analysis indicated that wherever the afore mentioned parameters of hygiene were adverse, isolation rates increased multifoldely. Multiple logistic regression analysis indicated that the probability of a milk sample being positive for bacterial contamination was higher by 20 times when unclean utensils were used, by 3 times if mothers hands were dirty and by 2.8 time if the mothers were illiterate. The odds of contamination by pathogens was 25.7 times higher if the feeding utensils were dirty.

Animals↗
PubMedDate not supplied

14C-urea breath test for assessment of gastric Helicobacter pylori colonization and eradication.

BACKGROUND AND OBJECTIVE: Urea breath test (UBT) is a reliable noninvasive technique for detecting gastric Helicobacter pylori colonization. 14C isotope-based test requires simple equipment and is inexpensive. We studied the utility of 14C-UBT in diagnosis of gastric H. pylori infection. METHODS: Presence of H. pylori was studied using antral histology and culture in patients with rapid urease test (RUT)-positive peptic ulcer. 14C-UBT was performed using a 185-kBq dose. Radioactivity in 15-min breath samples was measured using a beta-scintillation counter and result expressed as % dose recovered/mmol CO2. H. pylori was considered positive when any two tests were positive. All tests were repeated one month after completion of H. pylori eradication therapy. RESULTS: Among 41 patients (duodenal ulcer 36, gastric ulcer 5), H. pylori was detected by histology in 23 (56%) and by culture in 27 (66%). Overall, H. pylori was detected in 28 (68%) patients. Follow-up assessment was possible in 28 patients: 26 cleared the infection (all three tests negative). Mean 14C recovery values at 15 minutes associated with H. pylori-positive status were significantly higher (12.3 [SD 6.8] x 10(-3); n=30; p<0.001) than those associated with H. pylori-negative status (2.1 [0.9] x 10(-3); n=26). Using receiver-operating-characteristic analysis of 15-minute 14C recovery values, a cut-off of 6.5x10(-3) gave the best separation of H. pylori-positive and -negative cases. 14C-UBT had 93% sensitivity, 96% specificity and 95% accuracy. CONCLUSION: 14C-UBT appears to be a reliable noninvasive test for diagnosis of H. pylori infection.

Adolescent↗
PubMedDate not supplied

Correlation of Helicobacter pylori and gastric carcinoma.

BACKGROUND: Difference of opinion about the prevalence of H. pylori association with gastric cancer exists in the literature. AIMS: To study the correlation of Helicobacter pylori (H. pylori) to gastric carcinoma. METHODS: 50 proved cases of gastric cancer were studied by rapid urease test, culture, histopathology and ELISA test for H. pylori IgG. RESULTS: 68% of cases of gastric cancer were found to be positive for H. pylori infection as compared to 74% of healthy controls. CONCLUSIONS: The prevalence rate of H. pylori infection in our patients of gastric cancer was lower than in the control population though statistically not significant, suggesting that H. pylori may not be responsible for gastric carcinogenesis in this population.

Adult↗