Schistosoma mansoni: pairing of male worms with artificial surrogate females. 1989

P F Basch, and C Nicolas
Department of Health Research and Policy, Stanford University School of Medicine, California 94305.

To determine whether male worms provide any specific polypeptides to females, we produced extruded alginate fibers that resembled the size and shape of mature female worms. Males clasped these surrogate "female worms" and remained "paired" with them for long periods. On polyacrylamide gel electrophoresis, fibers clasped for several days showed bands at approximately 40 and 46 kDa which were never found in fibers incubated in the same medium but not clasped by males. We believe that these may be substances transferred from male worms during normal pairing. Males biosynthetically labeled with [14C]leucine were permitted to pair with fibers, which took up a broad range of polypeptides visualized on long autoradiographic exposure to gels.

UI MeSH Term Description Entries
D008297 Male Males
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D005260 Female Females
D006603 Hexuronic Acids Term used to designate tetrahydroxy aldehydic acids obtained by oxidation of hexose sugars, i.e. glucuronic acid, galacturonic acid, etc. Historically, the name hexuronic acid was originally given to ascorbic acid. Hexouronic Acids,Acids, Hexouronic,Acids, Hexuronic
D000464 Alginates Salts and esters of ALGINIC ACID that are used as HYDROGELS; DENTAL IMPRESSION MATERIALS, and as absorbent materials for surgical dressings (BANDAGES, HYDROCOLLOID). They are also used to manufacture MICROSPHERES and NANOPARTICLES for DIAGNOSTIC REAGENT KITS and DRUG DELIVERY SYSTEMS. Alginate,Alginic Acid, Barium Salt,Alginic Acid, Calcium Salt,Alginic Acid, Copper Salt,Alginic Acid, Potassium Salt,Alginic Acid, Sodium Salt,Alloid G,Barium Alginate,Calcium Alginate,Calginat,Copper Alginate,Kalrostat,Kalrostat 2,Kaltostat,Potassium Alginate,Sodium Alginate,Sodium Calcium Alginate,Vocoloid,Xantalgin,poly(Mannuronic Acid), Sodium Salt,Alginate, Barium,Alginate, Calcium,Alginate, Copper,Alginate, Potassium,Alginate, Sodium,Alginate, Sodium Calcium,Calcium Alginate, Sodium
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001345 Autoradiography The making of a radiograph of an object or tissue by recording on a photographic plate the radiation emitted by radioactive material within the object. (Dorland, 27th ed) Radioautography
D012550 Schistosoma mansoni A species of trematode blood flukes of the family Schistosomatidae. It is common in the Nile delta. The intermediate host is the planorbid snail. This parasite causes schistosomiasis mansoni and intestinal bilharziasis. Schistosoma mansonus,mansonus, Schistosoma
D020723 Glucuronic Acid A sugar acid formed by the oxidation of the C-6 carbon of GLUCOSE. In addition to being a key intermediate metabolite of the uronic acid pathway, glucuronic acid also plays a role in the detoxification of certain drugs and toxins by conjugating with them to form GLUCURONIDES. Glucuronate,Glucuronic Acid, 6-(14)C-labeled, (D)-isomer,Glucuronic Acid, Monopotassium Salt,Glucuronic Acid, Monosodium Salt,Monopotassium Glucuronate,Monosodium Glucuronate,Glucuronate, Monopotassium,Glucuronate, Monosodium

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