BACKGROUND Previous work on endothelial dysfunction in post-MI heart failure has shown conflicting results. AIM To analyze gender related alterations in NO-, PGI(2)- and EDHF-dependent endothelial function in the thoracic aorta 7 and 42 days after myocardial infarction (MI). METHODS AND RESULTS MI was induced by coronary artery ligation in female and male Sprague-Dawley rats. There was no g...

The aim of this work was to study the effect of oxidative stress on the structural changes of the secondary peptide structure of amyloid beta 1-42 (Aβ 1-42), in the dentate gyrus of hippocampus of rats exposed to low doses of ozone. The animals were exposed to ozone-free air (control group) and 0.25 ppm ozone during 7, 15, 30, 60, and 90 days, respectively. The samples were studied by: (1) Rama...

A short-term longitudinal study with 4and 5-month-old infants investigated whether infants’ prior experience with contingency or noncontingency in social interactions with specific others affects infants’ preference for these others in subsequent interactions. On Session 1 infants were simultaneously presented with social interaction from two strangers via video, one was interacting contingentl...

What is Russia and where is it going? As we approach the ninth year after the Fall, we are faced with Russia’s unprecedented economic decline, year in year out. The story is grim whether measured by gross domestic product, capital investment, industrial and agricultural output, inflation, budget deficits, international debt, educational levels, or health and mortality. Just when economists anti...

ABSTRACT To evaluate the effects of temporary dietary lysine restriction on nursery pigs’ growth performance and its economic viability compared to control diets, 144 piglets (21-d-old) were assigned randomized blocks, with two treatments twelve replicates. The control-lys: level as recommended from 21-32 32-42 days low-lys: 90% control-lys diets. From 42 62 days, all animals received a diet. 2...

the objective of this experiment was to determine the effect of long-term low-dose administration of lead (pb) on thyroid function in sheep. in this experiment 10 healthy iranian male sheep, aged about oneyear- old were randomly allocated into two equal groups of control (n = 5) and experiment (n = 5). both groups were kept under the same conditions of food and environment. the treatment group ...

Macrophage elastase and neutrophil elastase are involved in tissue destruction in periradicular lesions. The purpose of this study was to examine these elastases immunohistochemically during development of periradicular lesions induced in rat mandibular first molar by pulpal exposure for 7, 14, 21, 28, and 42 days. Histologically, periapical inflammation developed from 7 to 21 days and then sub...