Biomedical subjects

L Persson

Publications and source records attributed to L Persson.

At least 289 records · Page 16Linked to original sources

PubMed1975

[The development of drug resistance in Salmonella strains isolated from animals in Sweden 1955-65 and 1973-4(author's transl)].

134 salmonella strains, isolated from animals in 1955-65 were compared to 133 salmonella strains isolated in 1973-74, with regard to their drug resistance and the frequentcy of R-factors. No significant changes were observed during the reference period. Salmonella typhi-murium in comparison with other serotypes harboured a significantly larger number of resistant strains. Of the recently isolated resistant strains that were searched for R-factors, about half the number were carriers. All strains were sensitive to chloramphenicole and neomycin.

Ampicillin↗

PubMed1975

The effect of pre- and postnatal undernutrition on the development of the rat cerebellar cortex. I. Morphological observations.

A morphologic study of the postnatal development of cerebellum in normal and pre- and postnatally undernourished rats was initiated in order to evaluate the effect of undernutrition. Defined areas of the cerebellar hemisphere were studied light-microscopically. Parallel to this study a histochemical investigation was performed on the same cerebellar areas (see part II). It was found that pre- and postnatal undernutrition causes a retarded outgrowth of the apical dendritic tree of the Purkinje cells. Furthermore, undernourished rats displayed a delayed persistence of the external granular layer and a retarded differentiation and migration of presumed basket, stellate and internal granular cells which is in accordance with previous studies on cerebellar development in experimental undernutrition.

Animal Nutritional Physiological Phenomena↗

PubMed1975

The effect of pre- and postnatal undernutrition on the development of the cerebellar cortex in the rat. II. Histochemical observations.

The effect of pre- and postnatal undernutrition on the neuronal enzymatic maturation of the neocerebellar hemispheral lobules VI b, VI c and VII (according to Larsell 1952) was studied. Postnatally oxidative enzyme histochemistry (LDH, SDH, NADH, NADPH, G6PDH) revealed a delayed enzymatic development in the cerebellum between days 8 and 22, as an effect of pre- and postnatal undernutrition. In the Purkinje cell apical cone a delayed increase in enzyme activities could be seen at days 8 to 11 as well as a delayed decrease in Purkinje cell perikaryal enzyme activities at days 11 to 14 post-partum. The retarded enzymatic development seemed to parallel the retarded morphological development (cf. Sima & Persson 1975).

Age Factors↗

PubMed1974