Glucose metabolism of Haemonchus contortus adults: effects of thiabendazole on susceptible versus resistant strain. 1982

R S Rew, and C Smith, and M L Colglazier

Analyses of the in vitro glucose metabolism of Haemonchus contortus adults have confirmed a complex series of end-products: ethanol, n-propanol, propionate, acetate, and CO2 as the major end-products of catabolism. No difference in end-product accumulation was seen between the cambendazole sensitive (BPL) and cambendazole resistant (CR) strains. Thiabendazole (5 mM) in vitro depressed ethanol, propanol, acetate, and propionate accumulation by approximately 42% in the BPL strain. However, in the resistant strain (CR), these end-product accumulations increased by 50% when the worms were exposed to drug in vitro and 80% when exposed in vivo. Resistance manifested by the CR strain appeared to be associated with the ability to increase its carbon flow in the presence of thiabendazole.

UI MeSH Term Description Entries
D011422 Propionates Derivatives of propionic acid. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxyethane structure. Propanoate,Propanoic Acid,Propionate,Propanoates,Propanoic Acid Derivatives,Propanoic Acids,Propionic Acid Derivatives,Propionic Acids,Acid, Propanoic,Acids, Propanoic,Acids, Propionic,Derivatives, Propanoic Acid,Derivatives, Propionic Acid
D002159 Cambendazole A nematocide effective against a variety of gastrointestinal parasites in cattle, sheep, and horses. 5-Isopropoxycarbonylamino-2-(4-thiazoyl)benzimidazole,Noviben
D002245 Carbon Dioxide A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals. Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D004351 Drug Resistance Diminished or failed response of an organism, disease or tissue to the intended effectiveness of a chemical or drug. It should be differentiated from DRUG TOLERANCE which is the progressive diminution of the susceptibility of a human or animal to the effects of a drug, as a result of continued administration. Resistance, Drug
D005947 Glucose A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement. Dextrose,Anhydrous Dextrose,D-Glucose,Glucose Monohydrate,Glucose, (DL)-Isomer,Glucose, (alpha-D)-Isomer,Glucose, (beta-D)-Isomer,D Glucose,Dextrose, Anhydrous,Monohydrate, Glucose
D006189 Haemonchus A genus of parasitic nematode worms which infest the duodenum and stomach of domestic and wild herbivores, which ingest it with the grasses (POACEAE) they eat. Infestation of man is accidental. Hemonchus
D000085 Acetates Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure. Acetate,Acetic Acid Esters,Acetic Acids,Acids, Acetic,Esters, Acetic Acid
D000431 Ethanol A clear, colorless liquid rapidly absorbed from the gastrointestinal tract and distributed throughout the body. It has bactericidal activity and is used often as a topical disinfectant. It is widely used as a solvent and preservative in pharmaceutical preparations as well as serving as the primary ingredient in ALCOHOLIC BEVERAGES. Alcohol, Ethyl,Absolute Alcohol,Grain Alcohol,Alcohol, Absolute,Alcohol, Grain,Ethyl Alcohol
D000433 1-Propanol A colorless liquid made by oxidation of aliphatic hydrocarbons that is used as a solvent and chemical intermediate. Alcohol, Propyl,Propanol,n-Propanol,Propyl Alcohol
D000693 Anaerobiosis The complete absence, or (loosely) the paucity, of gaseous or dissolved elemental oxygen in a given place or environment. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Anaerobic Metabolism,Anaerobic Metabolisms,Anaerobioses,Metabolism, Anaerobic,Metabolisms, Anaerobic

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