Bioaccumulation of Copper and Zinc and the Effects on Antioxidant Enzyme Activities in the Liver of Acipenser stellatus (Pallas, 1771).

Although water pollution by metals in the Danube River is considered high, little is known about its impact on sturgeons. In this regard, the aim of this study was to investigate the bioaccumulation of copper and zinc as well as their effects on antioxidant enzymes activities in the liver of Acipenser stellatus. The fish were exposed for 7 and 14 days, to two concentrations of copper and zinc (10% and 25% of LC50 96 h), previously determined as 0.

[Lisch nodules. Markers for a non-invasive diagnosis in Recklinghausen neurofibromatosis].

Introduction: Von Recklinghausen's neurofibromatosis is an autosomal dominant disorder that affects both sexes at the same rate. The diagnosis is suggested by the family history, the presence of multiple neurofibromas and cutaneous pigmentary macules but is only confirmed by the presence of the Lisch nodules at the iris level and by histological exam. The disease is associated with different nervous system, bone, endocrine, blood vascular abnormalities.

The effects of leucotrofina or timolimfotropina on some parameters of carbohydrate metabolism in the Wistar rat.

A 10 days Leucotrofina or Timolimfotropina administration induced in Wistar rats a rise of glycemia and liver glycogen content, and a decrease of glycogen-phosphorylase a activity. These modifications lasted in time and may be due to an activation of the hepatic gluconcogenetic pathway, via a stimulated glucocorticoid production.

Heart metabolic modifications induced by nifedipine treatment in normo- and hypertensive Wistar rats.

Male Wistar rats weighing 150 +/- 10 g at the beginning of the experiment were used. The animals were divided in to four groups: control group (C); Hypertensive group (H) (Hypertension induced by subcutaneously injecting desoxycorticosterone acetate: 14 mg/kg b. w.

Thymic and suprarenalian response of Wistar rats following the administration of the humoral thymic factor (Leucotrofina) and of the cytostatic cyclophosphamide.

Leucotrofina administration in Wistar rats induced in thymus an increase of total protein content and of protein synthesis from 14C-leucine, simultaneously with a raise in the AlAT activity. Adrenal glands were not affected. Leucotrofina administration on the background of Cyclophosphamide induced modifications restored at normal values some of the thymic parameters (total protein content and RNA content) but the ascorbic acid content in the adrenals remained lowered.