title: [Dynamics of hematologic parameters and of the erythrocyte deformability index at the juvenal period of rats and guinea pigs].
abstract: In experiments on Wistar rats and guinea pigs, dynamics of blood hematological parameters and of erythrocyte deformability index (DI) was studied from birth to the 3-month age. In rats, significant changes were revealed in the picture of blood for the first month of postnatal ontogenesis. The number of erythrocytes and leukocytes sharply increased, the number of reticulocytes decreased, their ratio in the degree of maturity was changed. The mean erythrocyte volume and their acidic resistance also decreased. Prior to the 4-week age, DI increased, which was accompanied by an increase in the hemoglobin hydration and flattening of the erythrocyte shape. Then ID decreased and erythrocytes acquired the more spherical shape. After the critical period of 3-4 weeks the studied parameters reached plateau. In guinea pigs, at this period of ontogenesis the hematologic parameters had sufficiently stable values, except for a DI decrease from birth to 1.5 months, then it rose without reaching the initial values. Like in the case with rats, DI had a close correlation with the erythrocyte parameter of shape (O min).
authors.forename: A V
authors.initials: AV
authors.lastname: Novozhilov
authors.forename: L N
authors.initials: LN
authors.lastname: Katiukhin
authors.forename: B A
authors.initials: BA
authors.lastname: Feĭzullaev
mesh_terms: D000375:Aging / Q000502:physiology*; D000818:Animals; D000831:Animals, Newborn; D004907:Erythrocyte Deformability / Q000502:physiology*; D004912:Erythrocytes / Q000166:cytology / Q000378:metabolism*; D006168:Guinea Pigs; D051381:Rats; D017208:Rats, Wistar; D013045:Species Specificity