title: [The effect and changes in oxygen consumption of rat brain homogenates: in vitro effect of a peptide derivative].
abstract: The effect of a peptide derivative (Cerebrolysin) on oxygen consumption of brain homogenates was investigated in 1-day-old, 1-, 2-, 3- and 4-week-old and 2-, 4-, 8-, 12- and 18-month-old rats. A rapid increase of respiration up to the fourth week could be demonstrated. From that time on the values decrease until the age of 1 year and remain constant till the age of 18 months. At this age oxygen consumption corresponds to that of 2-week-old rats and lies 41% below the high level found in 4-week-old animals. In vitro application of the peptide derivative stimulates respiration significantly in all groups. There is striking evidence for a maximal relative increase in extremely young animals up to 2 weeks of life and in rather old ones aged 12 and 18 months.
mesh_terms: D000375:Aging; D000596:Amino Acids / Q000494:pharmacology*; D000818:Animals; D001921:Brain / Q000378:metabolism*; D066298:In Vitro Techniques; D010101:Oxygen Consumption / Q000187:drug effects*; D010455:Peptides / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D013268:Stimulation, Chemical
chemical_list: D000596:Amino Acids; D010455:Peptides; C006952:cerebrolysin
vernacular_title: Entwicklungs- und alterungsbedingte Anderung des Sauerstoffverbrauchs von Ratten-Hirnhomogenaten: In-vitro-Effekte eines Peptid-Derivates.