Biomaterial Database

How phlebotomy affects the erythrocyte metabolism of high- and low-glutathione sheep. 1976

J E Smith, and M Lee

Erythrocyte glutathione concentration increases dramatically in low-glutathione sheep of the Finnish-Landrace breed. To determine if this phenomenon occurs in low-glutathione sheep of the Corriedale or Merino type, the packed cell volume was decreased to less than 16 by phlebotomy. Glutathione concentrations increased in high- and low-glutathione sheep. Low-glutathione sheep returned to pre-phlebotomy levels by the 18th day; high-glutathione sheep increased, then decreased below pre-phlebotomy levels for the duration of the experiment. Packed cell volumes increased linearly (1-07 per cent per day) for 19 days. The maximum reticulocyte percentage (11-4) occurred on the eight day. Some erythrocyte enzymes increased as the mean cell age decreased, but some did not change. Erythrocyte adenosine-5'-triphosphate and creatine appear to be related to the reticulocyte count.

UI	MeSH Term	Description	Entries
D001815	Bloodletting	Puncture of a vein to draw blood for therapeutic purposes. Bloodletting therapy has been used in Talmudic and Indian medicine since the medieval time, and was still practiced widely in the 18th and 19th centuries. Its modern counterpart is PHLEBOTOMY.
D004912	Erythrocytes	Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.	Blood Cells, Red,Blood Corpuscles, Red,Red Blood Cells,Red Blood Corpuscles,Blood Cell, Red,Blood Corpuscle, Red,Erythrocyte,Red Blood Cell,Red Blood Corpuscle
D005954	Glucosephosphate Dehydrogenase		Glucose-6-Phosphate Dehydrogenase,Dehydrogenase, Glucose-6-Phosphate,Dehydrogenase, Glucosephosphate,Glucose 6 Phosphate Dehydrogenase
D005978	Glutathione	A tripeptide with many roles in cells. It conjugates to drugs to make them more soluble for excretion, is a cofactor for some enzymes, is involved in protein disulfide bond rearrangement and reduces peroxides.	Reduced Glutathione,gamma-L-Glu-L-Cys-Gly,gamma-L-Glutamyl-L-Cysteinylglycine,Glutathione, Reduced,gamma L Glu L Cys Gly,gamma L Glutamyl L Cysteinylglycine
D005980	Glutathione Reductase	Catalyzes the oxidation of GLUTATHIONE to GLUTATHIONE DISULFIDE in the presence of NADP+. Deficiency in the enzyme is associated with HEMOLYTIC ANEMIA. Formerly listed as EC 1.6.4.2.	Glutathione-Disulfide Reductase,Reductase, Glutathione,Reductase, Glutathione-Disulfide
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
D012756	Sheep	Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.	Ovis,Sheep, Dall,Dall Sheep,Ovis dalli