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The lymphatic microvessels of the rat mesentery do not contract rhythmically. Adrenaline and naloxone modulate the lymph-activating effect of opioid peptides (leu-enkephalin and dalargin).
Intravital studies of microcirculation and packed-cell volume in microvessels of rat mesentery demonstrated changes in the direction of the flow and packed-cell volume in the course of 17 minutes' ischemia caused by the occlusion of the afferent arteriole. Deficient inflow to the ischemized region is at first compensated for by the inflow from other… (More)
The erythrocyte redistribution in the rat mesentery microvessels and the development of postischemic microcirculatory disturbances were influenced by the thrombosis in narrow parts of arterioles and the increase in leukocyte adhesion to venule walls obstructing the blood outflow. The presence of branches and anastomoses in microvascular bed had a pronounced… (More)
The dynamics of the capillary hematocrit in 4-5-, 7- and 11-week rats involved its reduction with ageing from 0.17 l/l in 4-5-week rats to 0.10 l/l in 7- and 11-week ones in spite of considerable variability in each animal group. The reduction of the hematocrit seems to be due to the growth of capillary net in mesentery.
A modifed technique that allows in vivo study microcirculation in the rat lungs using a special camera. Feature of the method is stable fixation of lung tissue, which prevents its displacement during the study. Imaged surface of the lung tissue (alveoli with surrounding them on all sides capillaries).