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Abstract Title:

Vitamins C and E (ascorbate/α-tocopherol) provide synergistic neuroprotection in the jejunum in experimental diabetes.

Abstract Source:

Pathophysiology. 2015 Sep 28. Epub 2015 Sep 28. PMID: 26433445

Abstract Author(s):

Cristiano Massao Tashima, Catchia Hermes-Uliana, Juliana Vanessa Colombo Martins Perles, Marcilio Hubner de Miranda Neto, Jacqueline Nelisis Zanoni

Article Affiliation:

Cristiano Massao Tashima

Abstract:

The present study evaluated the synergistic effects of the association of ascorbic acid andα-tocopherol on myenteric in the jejunum of diabetic rats. The rats were randomly divided into four equal groups: untreated normoglycemic (UC), untreated diabetic (UD), ascorbic acid and α-tocopherol-treated normoglycemic (CAE) and ascorbic acid and α-tocopherol-treated diabetic (DAE). The rats from the CAE and DAE group received supplementation with ascorbic acid (1g/L in water) and α-tocopherol (1% in chow). At 210-days-old, the animals were sacrified and their jejunum was collected and submitted to immunohistochemistry. Quantitative and/or morphometric analysis were performed. Supplementation with ascorbic acid and α-tocopherol prevented the cell loss of myenteric neurons expressing HuC/D and TrkA in an equivalent proportion. We also observed a reduction of the CGRP nerve fiber varicosities and the prevention of the increased cell body size of submucosal VIP neurons (p<0.05). The association of ascorbic acid andα-tocopherol reduced the deleterious effects of diabetes promoting protection on the enteric neurons.

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