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Biomedical subjects

C Bollack

Publications and source records attributed to C Bollack.

At least 181 records · Page 10Linked to original sources
PubMedDate not supplied

Isolation and characterization of a microvascular fraction from rabbit kidney cortex.

Collagenasic dispersion of rabbit kidney cortex followed by centrifugation on discontinuous sucrose gradient, allowed the simultaneous isolation of a microvascular fraction and of glomerular and tubular fractions. The microvessels were characterized by an overall diameter of 22 micron and the presence of granular and smooth muscle cells. Measurement of cellular renin activity and the muscle specific enzyme creatine kinase showed that these vessels were arteriolar in nature and that they contained the preglomerular arterioles. The glomerular or tubular contamination rates were assessed by means of enzymatic markers. Thus, in the arterioles, potassium fluoride-resistant acid phosphatase was some 10 times lower than in the glomeruli. The specific tubular enzymes gamma-glutamyl-transpeptidase and alkaline phosphatase were about 20 times lower in the arterioles than in the tubular fraction. The possibility of obtaining these fractions may facilitate many types of study on renal hemodynamic and glomerulo-tubular feedback control.

Acid Phosphatase↗
PubMedDate not supplied

[Are serum acid phosphatase levels of diagnostic significance in prostatic cancer? (author's transl)].

The abnormal serum level of "prostatic" acid phosphatases, stresses a cellular alteration but without an own specificity allowing to certify that it is related to a prostatic affection. One could expect that during the following years thanks to the immunological and electrophoretic methods one can be able to detect in serum specific enzymes issued from a tissue which is in a definite physiopathological state.

Acid Phosphatase↗
PubMedDate not supplied

Robertsonian heterozygosity and male sterility.

Meiotic and synaptonemal complex studies using electron microscopy were carried out on infertile man with a 13/14 translocation. Synaptonemal complex analysis showed a typical trivalent with incomplete pairing of the acrocentric elements. The sterilizing effect caused by the failure of synapsis is discussed. This pairing failure has a diagnostic value and a poor prognosis.

Adult↗