Peritrophic matrix structure and function.

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174

作者：

Lehane，J M.

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摘要：

Formed of proteins, , and in a matrix, the peritrophic matrix (PM) separates the food from the midgut epithelium in most but not all . A PM occurs in two forms. A type I PM is delaminated from the entire midgut epithelium and, in some cases, may only be formed in response to feeding and the type of meal ingested. A type II PM is produced by a specialized region of the anterior midgut called the cardia and forms a continuous sleeve (or sleeves) that is always present. As it is positioned between food and midgut epithelium, the PM plays key roles in the intestinal biology of the insect. The PM may protect the midgut epithelium from mechanical damage and insult from pathogens and toxins; it must act as a semipermeable regulating passage of molecules between the different midgut compartments; and it may separate the midgut lumen into different, physiologically significant compartments.

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关键词：

PERITROPHIC MEMBRANE, digestive system, permeability, fonction physiologique, composicion quimica, mecanisme de defense, permeabilite, physiological functions, sistema digestivo, intestin, insecta, composition chimique, REVIEWS, MEMBRANE PERMEABILITY, appareil digestif, PROTECTION, epitelio, defence mechanisms, intestinos, MIDGUT, epithelium, mecanismos de defensa, intestines, MIDGUT COMPARTMENTALIZATION, chemical composition, permeabilidad, funcion fisiologica

DOI：

10.1146/annurev.ento.42.1.525

被引量：

1156

年份：

1997