PMID- 28004965 OWN - NLM STAT- MEDLINE DCOM- 20171116 LR - 20171128 IS - 1130-0108 (Print) IS - 1130-0108 (Linking) VI - 109 IP - 3 DP - 2017 Mar TI - Restoration of density of interstitial cells of Cajal in the jejunum of diabetic rats after quercetin supplementation. PG - 190-195 LID - 10.17235/reed.2016.4338/2016 [doi] AB - BACKGROUND: Interstitial cells of Cajal (ICC) are required for normal motility in the gastrointestinal tract. Depletion of ICC has been associated with diabetic gastroenteropathy. PURPOSE: To determine the effect of quercertin supplementation on anoctamin-1 (Ano1) immunoreactive ICC in the myenteric region (ICC-MY) and deep muscular plexus (ICC-DMP) in the jejunum of diabetic rats. METHODS: Thirty-two 90-day-old male Wistar rats were distributed into the following groups: normoglycemic (C), normoglycemic supplemented with quercetin (CQ; 40 mg daily), diabetic (D), and diabetic supplemented with quercetin (DQ; 40 mg daily). Diabetes was induced by streptozotocin injection. After 120 days, preparations of the jejunal muscular and submucosal layers were immunostained for Ano1 to visualize ICC. Evaluation of the immunofluorescence intensity as well as density of ICC was performed. RESULTS: The density of ICC-MY was 46% lower in group D compared to group C (p < 0.01); ICC-DMP were reduced by 37% (p > 0.05). After quercertin treatment, the densities of ICC-MY were significantly higher in the DQ group compared to group D (ICC-MY: 58%, p < 0.05). Supplementation with quercetin in normoglycemic animals (CQ) compared with group C did not significantly change the ICC density (p > 0.05). CONCLUSIONS: In STZ-treated diabetic rats, diabetes promoted a reduction in the density of jejunal ICC-MY with no significant effect on ICC-DMP. Supplementation with quercetin (DQ) appeared to protect ICC-MY from depletion in diabetes possibly due to its antioxidant action. FAU - Vieira Frez, Flavia Cristina AU - Vieira Frez FC AD - Morphological Science, State University of Maringa, Brazil. FAU - Martins Colombo Perles, Juliana Vanessa AU - Martins Colombo Perles JV AD - Department of Morphological Sciences, State University of Maringa. FAU - Robert Linden, David AU - Robert Linden D AD - Mayo Clinic. FAU - Gibbons, Simon John AU - Gibbons SJ AD - Physiology and Biomedical Engineering and Enteric, Mayo Clinic, USA. FAU - Amilcar Martins, Heber AU - Amilcar Martins H AD - Universidade Estadual de Maringa. FAU - Almeida Brito Romualdo, Debora AU - Almeida Brito Romualdo D AD - Morphological Science, Universidade Estadual de Maringa, Brazil. FAU - de Souza, Sara Raquel AU - de Souza SR AD - Department of Morphological Sciences, State University of Maringa. FAU - Daion Piovezana Bossolani, Gleison AU - Daion Piovezana Bossolani G AD - Universidade Estadual de Maringa. FAU - Zanoni, Jacqueline Nelisis AU - Zanoni JN AD - Morphological Sciences, State University of Maringa, Brazil. LA - eng PT - Journal Article PL - Spain TA - Rev Esp Enferm Dig JT - Revista espanola de enfermedades digestivas JID - 9007566 RN - 0 (ANO1 protein, rat) RN - 0 (Anoctamin-1) RN - 0 (Antioxidants) RN - 9IKM0I5T1E (Quercetin) SB - IM MH - Animals MH - Anoctamin-1/metabolism MH - Antioxidants/*therapeutic use MH - Diabetes Mellitus, Experimental/*drug therapy/pathology MH - *Dietary Supplements MH - Interstitial Cells of Cajal/*drug effects/pathology MH - Jejunum/drug effects/*pathology MH - Male MH - Quercetin/*therapeutic use MH - Rats MH - Rats, Wistar EDAT- 2016/12/23 06:00 MHDA- 2017/11/29 06:00 CRDT- 2016/12/23 06:00 PHST- 2016/12/23 06:00 [pubmed] PHST- 2017/11/29 06:00 [medline] PHST- 2016/12/23 06:00 [entrez] AID - 10.17235/reed.2016.4338/2016 [doi] PST - ppublish SO - Rev Esp Enferm Dig. 2017 Mar;109(3):190-195. doi: 10.17235/reed.2016.4338/2016.