Effect of some oxytocin analogues on natriuresis in rats. 1980

P Hrbas, and T Barth, and J Skopková, and M Lebl, and K Jost

Non-anaesthetized rats were used for studying the relationship between the amount of sodium excreted and structural modifications of oxytocin molecule. Any change performed in position 4 (i.e. the glutamine residue) resulted in a decrease of natriuretic activity as compared to that of oxytocin. The analogues with modifications in the amino-terminal part of the molecule (e.g. substitution of the amino group in position 1 by hydrogen, or of the disulfide bond by a thioether group) resulted in a higher natriuretic effect than oxytocin.

UI MeSH Term Description Entries
D008297 Male Males
D009318 Natriuresis Sodium excretion by URINATION. Natriureses
D010121 Oxytocin A nonapeptide hormone released from the neurohypophysis (PITUITARY GLAND, POSTERIOR). It differs from VASOPRESSIN by two amino acids at residues 3 and 8. Oxytocin acts on SMOOTH MUSCLE CELLS, such as causing UTERINE CONTRACTIONS and MILK EJECTION. Ocytocin,Pitocin,Syntocinon
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
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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