title: Catecholamines during development of the parasitic nematode, Haemonchus contortus.
abstract: 1. Catecholamines from infective larvae of Haemonchus contortus were extracted, separated on HPLC, and measured on an electrochemical detector. DOMA 18 ng/100,000 larvae: NE 6 ng: E 1 ng: DA 1 ng 2. Levels of norepinephrine decreased below detection level rapidly after gassing with CO2. 3. Levels of 3,4-dihydroxymandelic acid (DOMA), a metabolite of norepinephrine, increased when exsheathment took place in tap water rather than buffer.
authors.affiliation: Helminthic Diseases Laboratory, Livestock and Poultry Sciences Institute, United States Department of Agriculture, Beltsville, MD 20705.
authors.forename: M W
authors.initials: MW
authors.lastname: Fleming
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000378:metabolism*; D006189:Haemonchus / Q000254:growth & development / Q000378:metabolism*; D009638:Norepinephrine / Q000378:metabolism*
chemical_list: D002395:Catecholamines; D009638:Norepinephrine