Search results
Results from the WOW.Com Content Network
Typhoidal Salmonellae induce their own phagocytosis by host macrophages in vivo, and inhibit digestion by lysosomal action, thereby using macrophages for their own replication and causing macrophage apoptosis. [25] Macrophages can digest more than 100 bacteria before they finally die due to their own digestive compounds.
The gut-associated lymphoid tissue lies throughout the intestine, covering an area of approximately 260–300 m 2. [5] In order to increase the surface area for absorption, the intestinal mucosa is made up of finger-like projections (), covered by a monolayer of epithelial cells, which separates the GALT from the lumen intestine and its contents.
MIP-1γ is another macrophage inflammatory protein and according to the new nomenclature is named CCL9. [3] It is produced mainly by follicle-associated epithelial cells and is responsible for chemotaxis of dendritic cells and macrophages into Peyer's patches in gut through binding of CCR1. [11] MIP-1δ or MIP-5 (CCL15) binds also CCR1 and CCR3 ...
Macrophages are found throughout the body in almost all tissues and organs (e.g., microglial cells in the brain and alveolar macrophages in the lungs), where they silently lie in wait. A macrophage's location can determine its size and appearance. Macrophages cause inflammation through the production of interleukin-1, interleukin-6, and TNF ...
Kupffer cells, also known as stellate macrophages and Kupffer–Browicz cells, are specialized cells localized in the liver within the lumen of the liver sinusoids and are adhesive to their endothelial cells which make up the blood vessel walls. Kupffer cells comprise the largest population of tissue-resident macrophages in the body.
The mononuclear phagocyte system and the monocyte macrophage system refer to two different entities, often mistakenly understood as one. [citation needed] "Reticuloendothelial system" is an older term for the mononuclear phagocyte system, but it is used less commonly now, as it is understood that most endothelial cells are not macrophages. [2]
Pathogenic cells such as bacteria can be opsonised by antibodies or complement factors, enabling their phagocytosis and phagoptosis by macrophages and neutrophils. "Aged" erythrocytes and neutrophils, as well as "activated" platelets, neutrophils and T-cells, are thought to be phagocytosed alive by macrophages. Development.
Control of the digestive system is also maintained by ENS, which can be thought of as a digestive brain that can help to regulate motility, secretion and growth. Sensory information from the digestive system can be received, integrated and acted upon by the enteric system alone. When this occurs, the reflex is called a short reflex. [4]