From owner-celegans@hgmp.mrc.ac.uk Thu May 4 16:49:57 2000 Return-Path: Received: by mercury.hgmp.mrc.ac.uk (Postfix, from userid 110) id 01BB017AE5; Thu, 4 May 2000 16:49:54 +0100 (BST) Received: by mercury.hgmp.mrc.ac.uk (Postfix, from userid 1) id 0B5B917AC8; Thu, 4 May 2000 16:49:52 +0100 (BST) To: celegans@net.bio.net Newsgroups: bionet.celegans Date: Thu, 04 May 2000 14:05:40 +0100 From: leon@eatworms.swmed.edu (Leon Avery) Subject: Re: enteric nervous system in other nematode Organization: BIOSCI/MRC Human Genome Mapping Project Resource Centre Message-Id: <20000504154952.0B5B917AC8@mercury.hgmp.mrc.ac.uk> Sender: owner-celegans@hgmp.mrc.ac.uk Precedence: bulk If "Enteric Nervous System" means the same thing as "Pharyngeal Nervous System" (sometimes also called the "Esophageal nervous system" for extra confusion, unless you're English in which case it's the "Oesophageal nervous system"), the answer is yes: other nematodes do have one. I've looked at several soil nematode species: among them C briggsae, Panagrellus, Diploscapter, and Oscheius. By Nomarski they have pharyngeal neuron nuclei in the same places as C elegans. In C Briggsae and P redivivus they function as neurons as tested by laser ablation. I haven't done any lasering on other species yet. -- Leon Avery (214) 648-4931 (voice) Department of Molecular Biology -1488 (fax) University of Texas Southwestern Medical Center 5323 Harry Hines Blvd leon@eatworms.swmed.edu Dallas, TX 75390-9148 http://eatworms.swmed.edu/~leon/ I would be interested to know if other nematodes are known to have an enteric nervous system. Nathalie Nathalie Pujol LGPD Developmental Biology Institute of Marseille Luminy case 907 13288 Marseille Cedex 9 Tel : 33.4.91.26.97.33 Fax : 33.4.91.26.97.26 e-mail : pujol@ibdm.univ-mrs.fr --- .