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Biomedical subjects

S Karim

Publications and source records attributed to S Karim.

27 records · Page 2Linked to original sources

The effect of four different types of food on the bioavailability of cefaclor.

This randomized, open-label, balanced, five-treatment, five-period, five-sequence, single-dose and crossover pharmacokinetic study assessed the effect of different types of food on the bioavailability of cefaclor in 18 healthy male volunteers. A single dose of cefaclor, 250-mg capsule was administered at five occasions: after overnight fasting, after two vegetarian (high-fat and low-fat) diets and two non-vegetarian (high-fat and low-fat) diets. Serial blood samples were collected upto 8 h post dose. Serum cefaclor concentrations were determined by a validated HPLC method. AUC values were not significantly affected by food intake, but the T(max) was prolonged and C(max) was decreased, depending on the type of meal. The non-vegetarian diets affected the rate of absorption of cefaclor more than the vegetarian diets. The least decrease in C(max) was produced by low-fat vegetarian diet, while the maximum decrease was produced by high-fat non-vegetarian diet. The results of this study indicate that while the rate of absorption of cefaclor is significantly decreased, the extent of absorption and the rate of elimination are not significantly decreased in the presence of food. As compared to high-fat non-vegetarian diet, the time above MIC50 concentration was significantly increased by low-fat vegetarian diet. The implications of these findings for the large vegetarian Indian population are considerable.

Analysis of Variance↗

Comparative effect of different types of food on the bioavailability of cefaclor extended release tablet.

This randomized, six-treatment, six-period, six sequence, single dose, crossover pharmacokinetic study assessed the effect of different types of food on the bioavailability of 500-mg cefaclor extended release tablet in 23 healthy male volunteers. A single dose of cefaclor extended release 500-mg tablet was administered at six occasions: after overnight fasting, after two vegetarian (high-fat and low-fat), two non-vegetarian (high-fat and low-fat) and rice diets. Serial blood samples were collected up to 12 h after dose. Serum cefaclor concentrations were determined by a validated HPLC method. An almost equivalent increase in both Cmax and AUC was observed with both high-fat non-vegetarian and low-fat vegetarian breakfasts. However, when MIC90 values, a pharmacodynamic end-point were compared, the low-fat vegetarian diet fared better than the high-fat non-vegetarian diet. The results obtained favor low-fat vegetarian diet (breakfast) to be taken with cefaclor extended release tablet to achieve maximum benefit in terms of clinical efficacy.

Adult↗

Socioeconomic and cultural influence in the causation of burns in the urban children of Bangladesh.

This prospective case-control study was conducted on 105 consecutive cases admitted to the burn units of Dhaka Shishu Hospital and Dhaka Medical College Hospital. The same number of controls were selected randomly from the community and matched with respect to age group, sex, and location of residence within the defined metropolitan area during the period January to September 1997. Both the controls and cases were divided into three age groups. Group A (19 controls and 19 cases) included neonates and infants, group B included children from 1 to 4 years, and group C included children from 4 to 12 years. The mean age of the controls in group A was 8.42+/-3.86 months and in group B and C was 5.72+/-4.05 years. The mean age of cases in group A was 4.79+/-4.05 months and in group B and C was 5.08+/-2.87 years. A scoring system was used to analyze 14 socioeconomic and cultural factors, which indicated highly significant differences between controls and cases (P < 0.001), and also between male (P < 0.001) and female (P < 0.001) controls and cases. There were significant differences between controls and cases in group A (P < 0.001), group B (P < 0.01), and group C (P < 0.001). Differences were not significant between males and females within groups A, B, and C for cases or controls (P > 0.05). Regression analysis of the total scores for cases and controls indicated a negative correlation between burns and the socioeconomic variables included in the study. There were highly significant associations between burns and lack of alertness to burns among parents (P < 0.001), clothing of manmade fabrics (P < 0.001), and cooking equipment in the kitchen within reach of children (P < 0.001). There was a significant association between burns and illiteracy of the mother (P < 0.01), housing located in slums and congested areas (P < 0.01), illiteracy of the father (P < 0.02), presence of preexisting impairment in children (P < 0.05), presence of a history of burns among siblings (P < 0.05), and low economic status of the parents (P < 0.05). No significant associations were indicated between controls and cases with respect to number of children in the family (P > 0.1), family pattern (P > 0.1), conjugal bonding between parents (P > 0.5), and sibling's death and disability from burns (P > 0.5). It is evident that an increase in alertness to burns, easy availability of clothing of natural fabrics, keeping cooking equipment beyond the reach of the children, increased literacy among parents and children, and improvement in family income might decrease the incidence of burns in children.

Bangladesh↗

Combined effect of captopril and thiazide diuretic on serum lipid profile in hypertensive women.

BACKGROUND: Hypertension has long been recognized as the major risk factor for the development of coronary disease. It was found that the combination of thiazide diuretic and ACE inhibitor has favorable antihypertensive and metabolic effect i.e. the combination reduces the levels of lipid. METHODS: 40 women aged between 35-60 years having systolic blood pressure equal to or greater then 160 mmHg were included in the study. Captopril in a dose of 25-75 mg plus thiazide 25-50 mg orally per day was given in divided doses. Before starting therapy and then after 4th and 10th week of therapy, 5 ml of fasting blood was drawn to analyze lipid profile like serum triglyceride, cholesterol and lipoprotein (HDL and LDL-Cholesterol). RESULTS: Study observed a marked decrease of blood pressure after taking captopril with diuretics. Level of triglyceride and of HDL and LDL-cholesterol were also significantly changed (P < 0.01) as compared to their controls. CONCLUSION: It was observed that captopril in combination of thiazide diuretics not only decrease blood pressure but also a beneficial effect on lipid profile. Hence further research is needed on large number of patients of both sexes.

Adult↗

Metabolic effects of alcoholism and its relationship with alcoholic liver disease.

BACKGROUND: Chronic and excessive ethanol consumption is associated with cellular proliferation, fibrosis, cirrhosis and cancer of liver. It was planned to study the effect of alcohol on different biochemical parameters as distribution of these parameters may lead to several complications in gastrointestinal tract, liver, kidney, brain etc. METHODS: 50 alcoholic males and 20 normal subject (with no history of alcohol) with an age ranges 30-45 years were included in the study. Biochemical parameters related to liver were estimated by standard kit. Besides, ions and electrolytes were also determined by standard kit and flame photometry. RESULTS: It was observed that level of alkaline phosphatase, alanine transferase, protein and globulin were significantly increased as compared to normal subjects. Besides, ions like calcium and phosphate were significantly decreased. On the other hand the level of potassium and magnesium was significantly decreased as compared to normal subjects. Electrophoresis shows a protein of 100 Kda is present in the patients sample as compared to control subjects. CONCLUSION: It is therefore concluded that abnormal biochemical function of liver in alcoholism can lead to several complications, hence further research is needed to reach a definite conclusion.

Adult↗