Biomedical subjects
Publications and source records attributed to S P Trivedi.
ESR increased at all concentrations and exposures to LAS. However, increases were more pronounced at LC50 for 24 h and minimum at the end of 96 h.
It was observed that clotting time decreased with the increased concentrations of LAS. However, the decrease was more pronounced at LC50 for 24 h and at the end of 96 h LC50, it was very close to control values.
OBJECTIVES: This study discusses incidence and clinical profile of pulmonary involvement in leptospirosis in South Gujarat. It also tries to evaluate the effect of high dose glucocorticoid pulse therapy (GPT) on it. METHOD: A study was carried out on hundred and two patients of suspected leptospirosis, referred to Government Medical College, New Civil Hospital, Surat between June 99 to September 99. The incidence, clinical profile, and specific investigations were studied in patients having pulmonary involvement. Some of the patients were given high dose glucocorticoid pulse therapy. Their outcomes were compared with those who had not been given glucocorticoid pulse therapy. RESULTS: Out of seventy seven seropositive patients 13 (16.8%) developed pulmonary involvement. Mortality was two out of eight patients in the group that received GPT and four out of five patients in the group that did not receive GPT. Two patients who died in the steroid treated group received the drug after 12 hours of onset of dyspnea. CONCLUSIONS: High dose GPT should be given as early as possible after the onset of dyspnea to all the patients with pulmonary involvement in leptospirosis. Further studies are required to establish the GPT as a standard regimen in treatment of pulmonary involvement in leptospirosis.
Fishes are sensitive indicators of pollutants present in water.These pollutants cause various physical and physiological alterations in fishes. In the present work alteration in the activity of acid and alkaline phosphatase was evaluated in testicular tissue of fresh water fish Heteropneustes fossilis exposed to LC50 value of linear alkyl benzene sulphonate (LAS) for different exposure periods [24 h, 48 h, 72 h and 96 h] With increase in the concentration of chemical LAS, the activity of acid phosphatase (ACP) was reported elevated while a significant fall in the activity of alkaline phosphatase (ACP) was recorded for same exposure period. Elevated activity of ACP, one of the important hydrolases of lysosomes, is quite suggestive of bringing about gross necrosis and dysarchitecture. ALP is involved in various metabolic activities including gonadal maturation and as such decreased activity of this enzyme is definitely one of the important causative factors for reproductive impairment of the fish.
The effects of two commonly used fertilizers, diammonium phosphate and urea, on hematological parameters (hemoglobin, red blood cell count, hematocrit, and total leucocyte count) of fresh water fish Clarias batrachus were studied. The toxic effect of diammonium phosphate was more pronounced than that of urea. The toxic effect of diammonium phosphate resulted in a sudden fall of hematological parameters--Hb, RBC count, Hct--at higher concentrations, and at lower concentrations gradual decreases were seen over comparatively longer durations. In urea intoxication, slight decreases in the three parameters were seen at lower concentrations during shorter intervals, while at higher concentrations, significant decreases during shorter intervals were observed. Total leucocyte count (TLC) increased during toxicity with both fertilizers, but higher elevations in TLC were produced by diammonium phosphate than by urea.
Explore the source record for details and available documents.
Chromium, a widely recognized carcinogenic, mutagenic and redox active metal, is released into aquatic environments by electroplating, tannery and textile industries. Elevated concentrations in sediments and interstitial waters are well documented. Fishes dwelling in chromium waste infested waters are presumed to be affected by its deposits. To evaluate the genotoxic potential of chromium [Cr(VI)] on aquatic bio-system, bottom feeding fishes, Channa punctata, as model fish, were exposed to [Cr(VI)]. The chromosomal aberration test (CAT) was used as biomarker of [Cr(VI)] induced toxicity. The fish were divided into three groups:Group I non-treated controls; group II positive controls, treated with an intra-muscular injection of mitomycin-C at 1 mg/kg body wt; group III exposed to a sublethal concentration (7.689 mg/l) of [Cr(VI)], dissolved in the water. For CAT estimation, short term static bioassays were conducted and samples were collected from the kidneys of fish after 24, 48, 72, 96 and 168 hrs of exposure. The remarkable chromosomal aberrations recorded in the present investigation included chromatid breaks, chromosome breaks, chromatid deletions, fragments, acentric fragments, and ring and di-centric chromosomes, along with chromatid and chromosome gaps. A significant increase in chromosomal aberrations was observed after 72 hrs of [Cr(VI)] exposure. The present study, thus reveals that even for acute exposure, [Cr(VI)] is a genotoxic agent for C. punctata.