Consulta: subjectFacets:"Weanling rats"
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Data/hora: 02/06/2024 07:35:49

Cell proliferation and migration in the jejunum of suckling rats submitted to progressive fasting
Provedor de dados: 56
Autores: Gomes,J.R.; Alvares,E.P.
Cell proliferation and migration in the intestinal crypts, and cell migration in the villus are controlled by different mechanisms in adult rats. In the present study, weanling rats and fasting rats were used to quantitatively study the correlation of cell cycle parameters and epithelial cell migration in crypts and intestinal villi. Eighteen-day-old rats received a single injection of tritiated thymidine [3H]TdR (23:00 h); half of the pups were submitted to fasting 5 h earlier. Cell proliferation was determined in radioautographs of jejunal crypts, on the basis of the labeling indices (LI) taken 1, 8, 13 and 19 h after [3H]TdR. The results showed that the labeling index did not differ 1 h or 19 h after [3H]TdR between the fed (38.7% or 48%) and fasting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cell proliferation; Cell migration; Crypt and villus intestine; Weanling rats; Radioautography.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000200011

Use of nucleotides in weanling rats with diarrhea induced by a lactose overload: effect on the evolution of diarrhea and weight and on the histopathology of intestine, liver and spleen
Provedor de dados: 56
Autores: Norton,R.; Leite,J.; Vieira,E.; Bambirra,E.; Moura,C.; Penna,G.; Penna,F.
Until recently, dietary sources of nucleotides were thought not to be essential for good nutrition. Certain states with higher metabolic demands may require larger amounts that cannot be provided by endogenous production. The objective of the present study was to determine the action of nucleotides on the recovery from lactose-induced diarrhea in weaned rats. Thirty-six weanling Fisher rats were divided into two groups. Group 1 received a standard diet and group 2 received a diet containing lactose in place of starch. On the 10th day, six animals per group were sacrificed for histopathological evaluation. The remaining animals were divided into two other subgroups, each with 6 animals, receiving a control diet, a control diet with nucleotides (0.05%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nucleotides; Diarrhea; Weight; Weanling rats.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000200006