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- W2163669442 abstract "Serosal application of a commerical solution of benzalkonium chloride (BAC) has been shown to selectively ablate myenteric neurons in the rat jejunum. This experimental model has proven useful in the study of the role of the myenteric plexus in intestinal function. The commercial BAC is a mixture of at least three homologous N-alkyldimethylbenzylammonium chlorides (ADBAC). The purpose of this study was to determine neuronal ablative activity in a series of ADBAC homologs when applied on the serosa of rat jejunum. Homologs not commercially available were synthesized and purified. Seven ADBAC homologs with alkyl chain lengths ranging from C6 to C18 were tested. A solution of each homolog (2 mm in saline) was applied directly on the serosa of an exteriorized portion of jejunum from anesthetized rats. Fifteen days after treatment, animals were sacrificed and treated tissues were processed for neuronal cell counts and muscle thickness determinations. All ADBAC homologs, except C18, ablated neurons of the myenteric plexus and produced thickening of intestinal smooth muscle. The number of submucosal neurons was not affected by any of the homologs. The structure-activity relationship observed in this study paralleled that of the reported antimicrobial activity of the ADBAC homologs, and is related to the aqueous solubility and relative surface activities of the homologs. The C14 homolog was found to be the most effective ablative agent, and reduced the number of myenteric neurons in a concentration-dependent manner. Thus, the C14 homolog can be used to produce a selectively denervated jejunal model for use in acute or chronic in vitro or in vivo studies of intestinal function." @default.
- W2163669442 created "2016-06-24" @default.
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- W2163669442 date "1989-10-01" @default.
- W2163669442 modified "2023-09-26" @default.
- W2163669442 title "Enteric neuronal ablation: Structure-activity relationship in a series of alkyldimethylbenzylammonium chlorides*1" @default.
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- W2163669442 doi "https://doi.org/10.1016/0272-0590(89)90295-9" @default.
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