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Like macrophages, intestinal macrophages are differentiated monocytes, though intestinal macrophages have to coexist with the microbiome in the intestines. This is a challenge considering the bacteria found in the gut are not recognized as "self" and could be potential targets for phagocytosis by the macrophage.
More recently, through loss-of-function and rescue-phenotype studies, RANKL is shown to be a receptor activator of NF-κB ligand and play a role in differentiation of M cells. RANKL is expressed throughout the small intestine, facilitates uptake of pathogens such as Salmonella, and is the most critical factor M cell differentiation. [5]
A macrophage's location can determine its size and appearance. Macrophages cause inflammation through the production of interleukin-1, interleukin-6, and TNF-alpha. [75] Macrophages are usually only found in tissue and are rarely seen in blood circulation. The life-span of tissue macrophages has been estimated to range from four to fifteen days ...
Macrophages are produced through the differentiation of monocytes, and after ingestion of bacteria, secrete enzymes to destroy the ingested particle. These cells reside in every tissue of the body, and upon infected tissue, are recruited to the tissue. Once recruited, macrophages will differentiate into specific tissue macrophages.
Macrophages and neutrophils are professional phagocytes in charge of most of the pathogen degradation, but they have different bactericidal methods. Neutrophils have granules that fuse with the phagosome. The granules contain NADPH oxidase and myeloperoxidase, which produce toxic oxygen and chlorine derivatives to kill pathogens in an oxidative ...
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.
ATLANTA -- No. 5 seed Texas experienced all of the emotions on Wednesday in a College Football Playoff quarterfinal game at the Peach Bowl. The Longhorns led No. 4 seed Arizona State by 16 points ...
Transcytosis (also known as cytopempsis) [1] is a type of transcellular transport in which various macromolecules are transported across the interior of a cell.Macromolecules are captured in vesicles on one side of the cell, drawn across the cell, and ejected on the other side.