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Query: UMLS:C0085580 (essential hypertension)
 14,686 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The study was carried out on 23 samples of amniotic fluid taken (by amniocentesis) between 35th and 39th week from pregnant women with arterial hypertension (13 cases of hypertension induced by pregnancy, 5 cases of primary hypertension and 5 cases of hypertension accompanying renal diseases). Seven women undergoing the study gave birth to newborns with symptoms of delayed intrauterine growth below 16 centiles (group examined), 16 mothers gave birth to eutrophic babies (control group). The amniotic fluid of the two groups was studied for the following biochemical indexes: alanine and aspartate aminotransferase alkaline total and thermostabile phosphatase, ceruloplasmin, alpha-amylase, general protein, beta-lipoproteins, cholesterol, uric acid, urea and creatinine. No significant changes were found in the parameters determined between the group examined and the control group.
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PMID:[Biochemical studies of the amniotic fluid in arterial hypertension in relation to intrauterine growth retardation. I. Parameters of the proteins, lipids, enzymes and renal maturity]. 263 82

Arterial hypertension produces changes along the vascular tree. However, there are few reports on its effect on human muscle capillaries. This study demonstrates the effects of essential hypertension on the capillaries of human quadriceps muscle. Muscle biopsy was taken from quadriceps femoris in eight men with recent diagnosis of essential hypertension, without treatment. Biopsies were also taken from eight normotensive men and were used as controls. Fiber types were classified by ATPase reaction, capillaries counted in alpha-amylase-PAS stained sections and ultrastructure studied by conventional methods of transmission electron microscopy. No changes were found in capillaries or muscle fiber types by histochemical methods. However, electron microscopy revealed abnormal capillaries with endothelial cells infoldings into the lumen, as well as occluded or degenerated capillaries. In some cases the endothelial cell area covered by pericytes was increased. Basement membrane of capillaries was frequently increased in width, sometimes irregularly, and in other instances it was reduplicated. In transversely sectioned capillaries lumen diameter was reduced and wall thickness was increased, although total diameter was unchanged. In hypertensive patients the finding of some degenerated capillaries adjacent to muscle fibers could be interpreted as the beginning of a process of rarefaction. Some capillaries showed morphological changes, and the ratio wall thickness/lumen was increased.
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PMID:Capillary changes in skeletal muscle of patients with essential hypertension. 1058 28