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In order to evaluate the suitability of fosfomycin in combination with other agents for the treatment of Helicobacter pylori infections, the susceptibility profiles of 65 H. pylori strains were determined against multiple antimicrobial agents and combinations thereof using the agar dilution method. For fosfomycin alone, the range of minimum inhibitory concentration (MIC) results and the MICs at which 50% and 90% of strains were inhibited were 0.5-32 microg/ml and 2 and 4 microg/ml, respectively. For the combination of fosfomycin with amoxicillin, clarithromycin or metronidazole, the means calculated for the minimum and maximum fractional inhibitory concentration index were 0.70-1.17 and 1.15-2.03, respectively, suggesting partial synergy or indifference in the majority of strains. The combination of clarithromycin and metronidazole showed synergistic activity against 14 of 28 H. pylori strains tested. The in vitro activity results suggest the combination of fosfomycin with either amoxicillin or clarithromycin may be a promising alternative for the treatment of H. pylori infection. However, the clinical efficacy of these regimens remains to be investigated.
The eradication rate of Helicobacter pylori (H. pylori) with triple therapy which was considered as standard first-line treatment has decreased to 70-85%. The aim of this study is to compare 7-day triple therapy versus 10-day sequential therapy as the first line treatment.
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Furazolidone has been effective against Helicobacter pylori in Iran, with no resistance, but with intolerable side effects in the second week. One-week regimens have not been useful here. We compared the efficacy and side effect profiles of three anti-H. pylori regimens.
A total of 131 patients with duodenal ulcer were randomized into three groups and received the following medication for 2 weeks: group A, colloidal bismuth subcitrate (CBS) 3 x 120 mg + TET 3 x 500 mg + MET 3 x 250 mg/day; group B, CBS 3 x 120 mg + TET 3 x 500 mg + MET 3 x 125 mg/day; group C, CBS 3 x 120 mg + TET 3 x 250 mg + MET 3 x 125 mg/day. Control endoscopy was performed after 6 weeks. Two biopsy specimens from antral and three from corpus mucosa were taken for a urease test, histology and culture. Eradication was concluded if all three tests were negative for H. pylori. MET resistance was determined by the disc diffusion method.
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Our objective was to determine the effect of body mass index (BMI) on response to bacterial vaginosis (BV) treatment. A secondary analysis was conducted of two multicenter trials of therapy for BV and TRICHOMONAS VAGINALIS. Gravida were screened for BV between 8 and 22 weeks and randomized between 16 and 23 weeks to metronidazole or placebo. Of 1497 gravida with asymptomatic BV and preconceptional BMI, 738 were randomized to metronidazole; BMI was divided into categories: < 25, 25 to 29.9, and > or = 30. Rates of BV persistence at follow-up were compared using the Mantel-Haenszel chi square. Multiple logistic regression was used to evaluate the effect of BMI on BV persistence at follow-up, adjusting for potential confounders. No association was identified between BMI and BV rate at follow-up ( P = 0.21). BMI was associated with maternal age, smoking, marital status, and black race. Compared with women with BMI of < 25, adjusted odds ratio (OR) of BV at follow-up were BMI 25 to 29.9: OR, 0.66, 95% CI 0.43 to 1.02; BMI > or = 30: OR, 0.83, 95% CI 0.54 to 1.26. We concluded that the persistence of BV after treatment was not related to BMI.
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Totally, seventy-eight patients with GU (confirmed with endoscopy) and infection of HP (Confirmed by Rapid Urease Test (RUT)) were allocated to one of the groups of study (35 participants in each group). Two weeks regimen of Clarithromycin (2×500 mg) + Amoxicillin (2×1 gr) + omeprazole (2×20 mg) was administered for group A of patients while group B got a 10 days regimen of Azithromycin (1×250 mg) + 14 days Amoxicillin (2×1 gr) + omeprazole (2×20 mg). At the end of the treatment course, the patients were evaluated according to the side effects of the drugs. In addition, two months after the end of therapy, patients underwent endoscopy and biopsy to evaluate HP eradication.
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Three morphological forms of B. burgdorferi (spirochetes, round bodies, and biofilm-like colonies) were generated using novel culture methods. Minimum inhibitory concentration and minimum bactericidal concentration of five antimicrobial agents (doxycycline, amoxicillin, tigecycline, metronidazole, and tinidazole) against spirochetal forms of B. burgdorferi were evaluated using the standard published microdilution technique. The susceptibility of spirochetal and round body forms to the antibiotics was then tested using fluorescent microscopy (BacLight™ viability staining) and dark field microscopy (direct cell counting), and these results were compared with the microdilution technique. Qualitative and quantitative effects of the antibiotics against biofilm-like colonies were assessed using fluorescent microscopy and dark field microscopy, respectively.
Clostridium tertium was isolated from two immunocompromised patients with septicemia, fever, and gastrointestinal symptoms. The strains were resistant to ceftazidime, cefepime, and clindamycin; intermediately resistant to penicillin; and susceptible to metronidazole, quinolones, and vancomycin.