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Biomedical subjects

S Farooq

Publications and source records attributed to S Farooq.

31 records · Page 2Linked to original sources
PubMed1997

Determination of cis-thymine glycol in DNA by gas chromatography-mass spectrometry with selected ion recording and multiple reaction monitoring.

A novel method for the determination of cis-thymine glycol in DNA has been developed, using gas chromatography-mass spectrometry with selected ion recording or multiple reaction monitoring. The procedure involves acidic hydrolysis of DNA in the presence of the internal standard cis-[2H3]thymine glycol, followed by derivatisation with N-methyl-N-(tert.-butyldimethylsilyl)trifluoroacetamide. The method was validated on DNA that had been oxidatively modified in vitro by radiation treatment, and was then applied to determine cis-thymine glycol in human placental DNA. Background levels of 5.45+/-2.98 ng cis-thymine glycol/mg DNA were observed in the human samples.

Acetamides↗
PubMed1997

In vivo protective role of Koflet (an ayurvedic preparation) against cellular toxicity caused by CCl4 and flyash.

Swiss albino rats were treated in groups with CCl4, and flyash to induce cellular toxicity in the lungs and trachea. Animal groups received treatment of Koflet (K) with CCl4 (7 days) and with flyash (30 days); their general health and biochemical parameters were studied and used as an indication of cellular injuries. A significant loss was observed in body weight and food consumption in animals given only CCl4 or flyash, while simultaneous treatment with K resulted in a non significant alteration from normal control groups. Enzyme (alkaline phosphatase, Ca2+ -Mg2+ -ATPase, glutamic-oxaloacetic transaminase (GOT) and glutamic pyruvic transaminase (GPT)) activities were estimated in tissue homogenate preparation of lung, trachea and serum, which showed no significant change except for GPT activity as compared to control animals which received CCl4 or flyash with K. Similarly lung, trachea and serum contents of carbohydrate, protein, sialic acid, serum protein, serum cholesterol were estimated and it was found that alteration caused by CCl4, or flyash becomes almost non-significant compared to that of the control after the treatment of K, except for carbohydrate and serum cholesterol values. The animal group which was only treated with K did not show any significant alteration in their biochemical markers or injuries, except for cholesterol.

Animals↗
PubMed1996

A novel HPLC procedure for the analysis of 8-oxoguanine in DNA.

The chromatographic quantitation of 8-oxoguanine adducts in DNA is widespread in the literature, although results obtained by HPLC of 8-oxodeoxyguanosine do not always agree with levels determined by GC-MS. To help explain this discrepancy, here we describe a novel procedure for the analysis of 8-oxoguanine adducts in DNA. Although it proved difficult to directly quantitate 8-oxoguanine in the presence of high levels of endogenous guanine using conventional reversed-phase HPLC, a simple preincubation of DNA acid hydrolysates with guanase allowed such analyses. The assay relied on our observation that 8-oxoguanine was not a substrate for guanase, and on sensitive electrochemical detection. The limit of detection for 8-oxoguanine was 5 nM or 250 fmol on column. Using this procedure, the background level of 8-oxoguanine in commercially available calf thymus DNA was 0.4 nmol/mg DNA or 3.2 mol/10(5) mol guanine.

Animals↗
PubMed1995

Somatization: a transcultural study.

The primary aim of this study was to investigate the comparative rates of somatic complaints between Asian and Caucasian patients in a primary care setting and to characterize the factors associated with increased rates of somatization. One hundred and ninety-five individuals aged between 16 and 65 yr were interviewed with the Bradford Somatic Inventory (BSI) and the Hospital Anxiety and Depression Scale (HAD) respectively. The main finding was that the Asian patients reported significantly more somatic and depressive symptoms than the Caucasian patients. Ethnicity was the most important variable determining this result.

Adolescent↗
PubMed1977

Amoxycillin trihydrate (Ibeamox) in the treatment of pyogenic meningitis-a preliminary report.

Amoxycillin a new broad spectrum antibiotic has been found to be effective against common gram positive and negative bacteria diagnosed in clinical practice. Moreover, it achieves higher blood levels as compared to Ampicillin. Since it was available only for oral use it had not been tried in the treatment of bacterial meningitis. Recently Amoxycillin Trihydrate became available for parenteral administration. Here we report its use as a single drug in 11 cases of Pyogenic meningitis. The dose administered by intravenous route was 200-400 mg/kg/day. All the cases recovered. Only three had minor neurological sequelae. Amoxycillin Trihydrate appears to be a safe and effective drug as there were no side effects or toxic manifestation even with the high dosage schedule.

Amoxicillin↗
PubMed1975

Formative effects of morphactin on the shoot apical meristem of flax (linum usitatissimum L.).

The effect of a morphactin -- CF1 -- (2-chloro-9-hydroxyfluorene-9-carbocylic acid-methyl ester) on the morphogenesis of shoot apical meristem was studied on L. usitatissimum L. at three levels of supply. CF1 at 10 and 100 parts/10(6) induced repeated gamophylly resembling a concentric cupulate structure. GA3 superimposed at two levels viz. 10 and 100 parts/10(6) did not reverse this effect. The effect of CF1 is dose-dependent and reversal to normal behaviour occurs when the effect of CF1 wears off.

Carboxylic Acids↗