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Biomedical subjects

A Reale

Publications and source records attributed to A Reale.

At least 109 records · Page 6Linked to original sources
PubMed1987

Correlation of morphological variables in germ-cell hypoplasia.

The correlations between the progression of germ-cell hypoplasia, measured with the Johnsen's score, reduction in tubular diameter, and thickening of the lamina propria of the seminiferous tubules were studied in a series of 42 biopsy specimens of the testis from 26 infertile men. There was a significant negative correlation between the mean tubular diameter and the mean thickness of the lamina propria (p less than 0.01), as well as a significant positive correlation between the Johnsen's score and the mean tubular diameter (p less than 0.01). The Johnsen's score did not correlate with the mean thickness of the lamina propria. Reduction of the tubular diameter and thickening of the lamina propria could be found across the spectrum of scores, but they prevailed in severe germ-cell hypoplasia.

Adult↗
PubMed1987

Tightly bound non-histone proteins: distribution of tissue-specific components in the chromatin organization.

We have investigated the distribution of tissue-specific tightly bound non-histone proteins in the first and third levels of chromatin organization. The proteins of this class have been extracted from whole chromatin and chromatin fractions prepared from pig liver or kidney. The tissue-specific proteins have high molecular mass (ranging from 135 KDa to 70 KDa in liver, over 135 KDa in kidney) and in kidney a more basic isoelectric point. These proteins are mainly located outside the core particles, and are instead present only in the chromatin matrix, become more intense after extensive digestion of the matrix with DNAase I.

Animals↗
PubMed1986

Prevention of postischaemic ventricular fibrillation by long term beta adrenoceptor blockade with acebutolol in the anaesthetised dog.

Acute occlusions of the proximal left circumflex coronary arteriovenous pedicle were performed in open chest anaesthetised dogs. Twenty eight dogs were randomly allocated to receive acebutolol (3 mg X kg-1 twice daily) or placebo given blindly by mouth for five days; a control group of 14 dogs without any pretreatment underwent the same procedure. Coronary ligations in the randomised study were performed during seven consecutive days, and four dogs were operated on each day. This schedule was chosen in order to measure acebutolol plasma concentrations just before ligation from 60 to 540 min after the last dose of the drug. Long term oral treatment with acebutolol protected against postischaemic ventricular fibrillation and significantly reduced the incidence of both early phase (0-10 min postocclusion) ventricular arrhythmias and ventricular fibrillation. As a result the outcome was significantly improved after 60 min of ischaemia in acebutolol compared with placebo treated animals. The results in the control animals were similar to those in the placebo treated dogs. The protective effect of long term oral treatment with acebutolol lasted for nine hours and was apparently independent of the plasma concentrations of the drug. These data show that improved outcome in this canine model is due to the prevention of ischaemia induced ventricular fibrillation by long term beta adrenoceptor blockade, which is able to overcome the effect, if any, of partial agonist activity of acebutolol. A direct myocardial anti-ischaemic effect might explain the effectiveness of long term oral treatment, which is independent of plasma concentrations of the drug.

Acebutolol↗