diapedesis


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diapedesis

[‚dī·ə·pə′dē·səs]
(medicine)
Hemorrhage of blood cells, especially erythrocytes, through an intact vessel wall into the tissues.
References in periodicals archive ?
Inflamed or immunological reactivity areas recruit monocytes in the blood (9) and these cells differentiate to macrophages after diapedesis (10) which merge to generate the multinucleated giant cells at site of inflammation, or differentiate in secreting macrophages known as epithelioid type cells (8, 11-13).
In order to identify diapedesis mechanisms, we sought soluble factors secreted by OE-MSCs.
In diapedesis, the white blood cell changes its shape in order to squeeze between or through the epithelial cells that form the walls of the blood vessel.
permitiendo la diapedesis y asi el infiltrado inflamatorio que se observa tanto en la dermis como en la epidermis de la lesion induce y mantiene activos los perfiles Thl y Thl7 y estimula la angiogenesis mediante la expresion del factor vascular de crecimiento endotelial (VEFG, por la sigla en ingles de Vascular Endothelial Growth Gactor) (28).
Las primeras celulas en llegar son los neutrofilos polimorfonucleares, quienes se marginan en los vasos sanguineos y por medio de diapedesis, escapan de los vasos a traves de las uniones de las celulas endoteliales, atraidos por los quimiotacticos, iniciaran la inflamacion aguda con fagocitosis de las bacterias con su correspondiente lisis celular.
Recent studies show that oxidized phospholipids favor monocyte binding to endothelial cells, thus promoting diapedesis from the blood stream [51].
A microscopic examination revealed a slight swelling and minor bleeding lesions of lung parenchyma, and pulmonary vascular engorgement in violation of the permeability of the walls and diapedesis of red blood cells in the surrounding tissue.
Absence of dry cow therapy regime could possibly be the major factor contributing to high prevalence at early lactation and early infection associated with delayed diapedesis of neutrophils in to the mammary gland (Schalm et al., 1971).
La dilatacion de las estructuras vasculares intracerebrales es otro mecanismo que ayuda a explicar la cefalea por cambios del tono vascular, galactorrea por hiperemia pituitaria y cambios en el LCR debidos a diapedesis de celulas y paso de proteinas al espacio subaracnoideo (13,14).
In addition to acting as neurotransmitters, CGRP and substance P serve as vasodilators, increasing vascular flow and permeability (diapedesis) and stimulating plasma extravasation and leukocyte migration into tissues (transmigration).
El macrofago libera proteasas para poder romper la union entre las celulas endoteliales, hay diapedesis para poder hacer la migracion y salir en busca del antigeno que ya esta opsonizado por inmunoglobulinas.