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Biomedical subjects

S Chandra

Publications and source records attributed to S Chandra.

At least 253 records · Page 14Linked to original sources
PubMed1983

Haematophagous behaviour of Menacanthus eurysternus (Mallophaga, Amblycera).

Haematophagous nature of some mallophagan species is of great concern to the scientists working in the field. Such species cause harm to the host directly by reducing vitality and productivity and indirectly by acting as reservoir and transmitter of pathogenic strains of infectious diseases. Menacanthus eurysternus infesting common myna Acridotheres tristis feeds exclusively on host blood obtained by piercing the quill of pin feathers and by gnawing through the epidermis. As much as 88.56% adults, 73.91% third instar nymphs, 66.66% second instar nymphs and 83.21% first instar nymphs were found feeding on the host blood, when examined microscopically. This mallophagan species does not harbour any triturating agent and is not involved in cannibalism or predation.

Animals↗
PubMed1980

Changes in lysosomal enzymes of peritoneal exudate cells in albino rats and Mastomys natalensis during Plasmodium berghei infection.

Activities of certain lysosomal enzymes of peritoneal exudate cells were followed during Plasmodium berghei infection in two experimental hosts. In albino rats, where sterile immunity against the infection develops, levels of beta-D-glucuroniodase and acid phosphatase activities were increased several times the normal values. On the other hand, in Mastomys natalensis, which succumbs to infection, levels of both the enzymes decreased considerably. Cathepsin D activity did not change to a significant extent in either host.

Acid Phosphatase↗
PubMed1980

Determination of optimal fluoride concentration in drinking water in an area in India with dental fluorosis.

The present study was made to determine the optimal fluoride concentration in drinking water in a fluorotic zone. The area under study was divided in four parts on the basis of fluorides present in drinking water. A sample of 1320 persons was examinmed, where prevalence of dental fluorosis varied from 3.8% to 65.4% depending on the fluoride concentration in drinking water. Statistically significant increase in the prevalence of dental fluorosis was found (a) with the rise in fluoride in drinking water, (b) with the rise in age, peak being found at 15--19 years age group and (c) amongst the bona fide residents of the area. A significant positive correlation was found between fluoride in drinking water and Community Fluorosis Index. While determining the optimal level of fluoride in drinking water, values obtained were 1.05 parts/10(6), 0.8 parts/10(6) and 0.34 part/10(6), respectively, by different formulae in a fluorotic zone of western Indian.

Adolescent↗