8 research outputs found
Diabetic autonomic neuropathy: evidence for apoptosis in situ in the rat
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75065/1/j.1365-2982.2004.00524.x.pd
Effect of l-glutamine on myenteric neuron and of the mucous of the ileum of diabetic rats
Quantitative study of the myenteric plexus of the stomach of rats with streptozotocin-induced diabetes
Morphoquantitative effects of acute diabetes on the myenteric neurons of the proximal colon of adult rats
Morphologic and quantitative study of the myenteric neurons of the jejunum of malnourished rats (Rattus norvegicus) Estudo morfológico e quantitativo dos neurônios mientéricos do jejuno de ratos desnutridos (Rattus norvegicus)
We studied the effects of maternal proteic desnutrition on the neurons of the myenteric plexus of the jejunum of rats from Rattus norvegicus species. It was used litters of female rats which received diet with normal proteic level during gestation and lactation (group NN), normal diet during gestation and hypoproteic diet during lactation (group ND); hypoproteic diet during gestation and normal diet during lactation (group DN); hypoproteic diet during both gestation and lactation (group DD). After weaning all the animals received diet of normal proteic level until the 60th day of age, when they were killed. The jejunum of the animals was subjected to whole-mount preparations stained by the method of Giemsa and used for the morphologic and quantitative analyses of the neurons of the myenteric plexus. We verified that maternal proteic malnutrition does not cause decrease on the number of myenteric neurons per unit area of jejunum in rats, but elicits mechanisms which assure that, when the animal again receives normal proteic level diet (22%) there occurs storage of proteic material on the cytoplasm of the neurons, thus rendering them larger and strongly basophylic.<br>Estudamos os efeitos da desnutrição protéica materna sobre os neurônios do plexo mientérico do jejuno de ratos da espécie norvegicus. Utilizamos filhotes de ratas que receberam dieta com teor protéico normal durante a gestação e a lactação (grupo NN), dieta normoprotéica durante a gestação e hipoprotéica durante a lactação (grupo ND); dieta hipoprotéica durante a gestação e normoprotéica durante a lactação (grupo DN); dieta hipoprotéica durante a gestação e lactação (grupo DD). Após o desmame todos os animais receberam dieta com teor protéico normal até os 60 dias de vida ocasião em que foram sacrificados. Preparados de membrana do jejuno foram corados pelo método de Giemsa e foram utilizados para análises morfológicas e quantitativas dos neurônios do plexo mientérico. Verificamos que a desnutrição protéica materna não provoca redução no número de neurônios mientéricos por área do jejuno de ratos, porém desencadeia mecanismos que fazem com que quando o animal volta a receber dieta com teor protéico normal (22%) ocorra acúmulo de material protéico no citoplasma dos neurônios, o que os torna maiores e fortemente basofílicos