effect of the ascorbic acid treatment on the nadhd-positive myenteric neurons of diabetic rats proximal colon
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2007
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Abstract
The aim of this work was to study the effect of the ascorbic acid on the myenteric neurons of diabetic rats proximal colon. Fifteen rats (90 days old) were divided into three groups: control, untreated diabetic and treated diabetic with ascorbic acid (DA). After 120 days of daily treatment with ascorbic acid, the intestinal segments were submitted to the NADH-diaphorase (NADHd) histochemistry technique to expose the myenteric neurons. The group DA showed a higher neuronal density (33.4 %) when compared to the untreated diabetic animals (p < 0.05). Cellular body area of neurons was significantly larger in group DA (17.3 %) when compared to the untreated diabetics (p < 0.05). It could be concluded that the ascorbic acid promoted a neuroprotective effect on the NADHd myenteric neurons of the proximal colon of diabetic rats.O efeito do ácido ascĂłrbico sobre neurĂ´nios mioentĂ©ricos do colo proximal de ratos diabĂ©ticos foi avaliado. Quinze ratos com 90 dias foram divididos nos grupos: controle, diabĂ©ticos e diabĂ©ticos tratados com ácido ascĂłrbico (DA). ApĂłs 120 dias de tratamento diário com ácido ascĂłrbico os segmentos intestinais foram submetidos Ă tĂ©cnica histoquĂmica NADH-diaforase (NADHd). A densidade neuronal, em uma área de 14,11 mm² para cada segmento, e o perfil do corpo celular de neurĂ´nios (500 neurĂ´nios/grupo) foram avaliados. O grupo DA apresentou maior densidade neuronal (33.4 %) em relação aos animais diabĂ©ticos (p < 0.05). Da mesma forma, a área do corpo celular dos neurĂ´nios foi significativamente maior no grupo DA (17.3 %) quando comparado com o grupo diabĂ©tico (p < 0.05). ConcluĂmos que o acido ascĂłrbico apresentou um efeito neuroprotetor sobre os neurĂ´nios mioentĂ©ricos NADHd do colo proximal de ratos diabĂ©ticos.
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Authors | ;Jacqueline Nelisis Zanoni;Renata Virginia Fernandes Pereira;Priscila de Freitas |
Journal | current drug delivery |
Year | 2007 |
DOI | 10.1590/S1516-89132007000100004 |
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