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Biomedical subjects

D M Renapurkar

Publications and source records attributed to D M Renapurkar.

At least 37 records · Page 2Linked to original sources
PubMed1989

Micro test for assaying sensitivity of Plasmodium vivax in vitro.

A modified Rieckmann test was developed for assessing chloroquine sensitivity of Plasmodium vivax strains. This test envisages the evaluation of parasite growth with different concentrations of the drug and its comparison with controls, at the end of a 48-hour experimental period. Using this test, 16 strains were assessed for their chloroquine sensitivity. Twelve strains were found to be sensitive, and 4 were resistant to chloroquine.

Animals↗
PubMed1989

Suncus murinus. Observations on ecology, distribution, status to plague in Bombay.

The common house shrew Suncus murinus has been shown to play an important role in maintenance and perpetuation of plague infection by earlier plague workers. With the control of human plague there is no knowledge about foci of plague in small mammals associated with man. Present study was carried out to fill in this Lacuna. Studies carried out in the present paper reveal that S. murinus does not harbour any plague infection in Bombay. This species is widely distributed in Bombay and is found to be associated with man throughout the year. The principal species of fleas harboured by this mammal is Xenopsylla cheopis. The insectivore mainly feeds on tine animals and insects and breeds throughout the year.

Animals↗
PubMed1988

Observations on commensal rats and their status to plague in Bombay.

The distribution pattern of various types of commensal rodents in Bombay city reveals that Bandicota bengalensis constitutes the predominant commensal rodent species followed by R. rattus and Rattus norvegicus. Apart from these three types, Bandicota indica, M. musculus and an insectivore (Suncus murinus) are the three species of commensal small mammals that are frequently encountered in or near human habitations. These small mammals are prevalent throughout the year and their percentage distribution varies very little during different months of the year. None of the rodent species examined during the years 1976-85 revealed presence of Y. pestis infection by bacteriological or serological methods. From these findings, it could be concluded that in the city of Bombay a focus of zoonotic plague infection does not exist.

Animals↗
PubMed1987

Larvicidal effect of perbendazole on experimental infection of Angiostrongylus cantonensis in mice.

Perbendazole was given orally and subcutaneously to mice infected with Angiostrongylus cantonensis at different stages of infection. The subcutaneous route of administration was more effective than the oral one. On the 5th day after infection, the perbendazole had a higher efficacy than on the 10th day postinfection. This finding shows that perbendazole had complete larvicidal effect at early stages of infection.

Administration, Oral↗
PubMed1987

Experimental chemotherapy of Angiostrongylus cantonensis infection in mice with flubendazole, levamisole, and their combination.

The efficacy of the drugs flubendazole, levamisole, and their combination was studied against Angiostrongylus cantonensis infection in mice. The drugs were evaluated on day 15 post infection. The efficacy was assessed by using single-dose and 5-dose treatment schedules. Flubendazole was effective at 25 mg/kg, 50 mg/kg, 100 mg/kg, 200 mg/kg when given each day for five days. Levamisole at a dose rate of 200 mg/kg was completely effective in a single treatment. The combined therapy of levamisole (25 mg/kg) and flubendazole (15 mg/kg) produced 100% efficacy. Both drugs given prior to experimental infection showed no prophylactic activity.

Angiostrongylus↗
PubMed1986

Effect of UV-irradiation, spleen cells and MLN cells on protective immunity against Angiostrongylus cantonensis infection in mice.

The UV-irradiated larvae of Angiostrongylus cantonensis were used for inducing immunity in mice. A single oral dose of 100 infective UV-irradiated larvae exposed for 5 min or 15 min induced 91% and 97% protection against subsequent infection. Adoptive protection against A. cantonensis could also be transferred by spleen and mesenteric lymph node cells obtained from vaccinated mice.

Angiostrongylus↗
PubMed1984

Studies on suspected clinical and experimental angiostrongyliasis: serological responses.

Serum antibodies in suspected angiostrongyliasis patient were detected by ELISA. The antibody titre was 1:51,200 in the serum and 1:6,400 in CSF with preadult A. cantonensis antigen. Other tests like AGD and CIEP failed to show any positive reaction with both preadult and adult worm antigens. Experimental infection with 100 A. cantonensis larvae in albino rats indicated positive CIEP reaction in serum from the day 5 to 375 after infection. No precipitin line was seen on the other hand, in AGD during observation period. Different rat groups infected with larval doses of 100, 500, 2,000, and 5,000 showed positive CIEP reaction, on the 21st day of infection when preadult worms were seen in CNS. There was no CIEP reaction when a low dose of 15 larvae was used. Cerebral fluid of rats infected with heavy dose of 5,000 larvae showed positive CIEP reaction on the 21st day.

Angiostrongylus↗
PubMed1983

Iodine uptake studies in cotton rat filariasis.

A study was undertaken in cotton rat filarial (L. carinii) model to examine whether the simple goitre is due to increased utilization of iodine by filarial worms. Thyroid function test using radioisotope 131I was taken as the parameter for the study. It was observed that the uptake of 131I by thyroid gland and PB131I in infected group was comparable to control groups. The uptake of 131I by worms was negligible. The thyroid glands of infected group did not reveal any histopathological changes.

Animals↗
PubMed1983

The distribution of Angiostrongylus cantonensis (Chen) in the central nervous system of laboratory rats.

The distribution of preadult Angiostrongylus cantonensis helminths in various regions of the central nervous system of rats, infected with varying doses of larvae, was studied. A dose of 10 000 larvae proved to be lethal; the rats showed paralytic symptoms and loss of vision prior to death. A very low dose of 15 larvae also proved to be infective to the central nervous system. Incidence of eye involvement was observed in two rats receiving a dose of 500 larvae. Maximum number of helminths were recovered from the cerebral hemisphere region but their involvement per unit weight of the tissue was found to be highest in the region of medulla oblongata.

Angiostrongylus↗
PubMed1982

A comparative assessment of efficacy of three anticoagulant rodenticides.

Results are presented of feeding tests carried out with three common anticoagulant rodenticides viz., coumatetralyl, fumarin and warfarin on three common species of commensal rodents i.e., Rattus rattus, Rattus norvegicus and Bandicota bengalensis. All three species of rodents were susceptible to anticoagulant rodenticides. However, the action of these compounds in B. bengalensis was comparatively slow. Coumatetralyl was found to be the most effective rodenticide followed by fumarin and warfarin. Liquid baits of these compounds are more effective in comparison to food baits.

4-Hydroxycoumarins↗