Morphological and quantitative study of the myenteric plexus of the ascending colon of rats subjected to proteic desnutrition

Arquivos de Neuro-Psiquiatria

Débora De Mello Gonçales Sant'ana²  Marcílio Hubner De Miranda-neto²  Romeu Rodrigues De Souza¹  Sônia Lucy Molinari² 

[1] ,Universidade Estadual de Maringá

关键词: ascending colon;    myenteric neurons;    myenteric plexus;    proteic desnutrition;    colo ascendente;    neurônios mientéricos;    plexo mientérico;    desnutrição protéica;   

DOI  :  10.1590/S0004-282X1997000500003

来源: SciELO

【 摘 要 】

We carried out this study with the purpose of contributing on the effects of the proteic desnutrition on the morphological aspects and quantitative analysis of the neurons in the myenteric plexus of the ascending colon of adult Rattus norvegicus. Twenty adult rats were divided into two groups; in one of them, we offered a normal ration with proteic level of 22% (control group) and in the other, a ration with a proteic level of 8% (experiment group) during 120 days. We did the whole-mount preparations for the ascending colon and stained them with the Giemsa technique and the histochemical technique of NADH-diaphorase. The rats with proteic desnutrition showed a body weight, on average, to be 35.1% less than those of the control group, and the colon was on average, 26.8% shorter and 6.7% narrower. Thus, it was to be expected that the colon of animals with proteic desnutrition had a neuronal density 31.62% greater than the rats of the control group. Nevertheless, the difference with the Giemsa technique was on average 18.4%, demonstrating a mean neuronal loss of 13.25%.

【 授权许可】

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