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Protective effects of quercetin-loaded microcapsules on the enteric nervous system of diabetic rats
Autonomic Neuroscience ( IF 2.7 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.autneu.2020.102759
Camila Cavicchioli Sehaber-Sierakowski 1 , Flávia Cristina Vieira-Frez 1 , Catchia Hermes-Uliana 2 , Heber Amilcar Martins 3 , Gleison Daion Piovezana Bossolani 1 , Mariana Machado Lima 1 , Fernanda Paschoal Blegniski 4 , Flávia Alessandra Guarnier 4 , Marcela Maria Baracat 5 , Juliana Vanessa Colombo Martins Perles 1 , Jacqueline Nelisis Zanoni 1
Affiliation  

Quercetin-loaded microcapsules (QLM) promote controlled release and higher bioavailability of quercetin, an antioxidant and neuroprotective agent. We evaluated the antioxidant effect of QLM on enteric innervation and in the oxidative status of the ileum of diabetic rats. Wistar adult rats (Rattus norvegicus) were used in six groups containing normoglycemic (N), diabetic (D) and either normoglycemic or diabetic groups treated with QLM at a dose of 10 mg/kg (NQ10 and DQ10, respectively) or 100 mg/kg (NQ100 and DQ100, respectively). DQ10 e DQ100 did not prevent overall neuronal loss in the total and cholinergic populations. Nitrergic population showed differences regarding the treatments: DQ10 preserved neurons in the nitrergic population whilst DQ100 increased nitrergic loss. Evaluation of the redox status showed pro-oxidant effects in NQ100 by t-butyl-induced chemiluminescence analysis. We observed a reduction in the carbonylic content and an increase of low molecular weight antioxidants for DQ10 e DQ100. Therefore, QLM treatment at a dose of 10 mg/kg acted positively on nitrergic neurons reducing oxidative damage induced by diabetes.

中文翻译:

槲皮素微胶囊对糖尿病大鼠肠神经系统的保护作用

槲皮素微胶囊 (QLM) 可促进槲皮素(一种抗氧化剂和神经保护剂)的控释和更高的生物利用度。我们评估了 QLM 对糖尿病大鼠肠道神经支配和回肠氧化状态的抗氧化作用。Wistar 成年大鼠 (Rattus norvegicus) 用于六组,包含正常血糖 (N)、糖尿病 (D) 和正常血糖组或糖尿病组,QLM 以 10 mg/kg(分别为 NQ10 和 DQ10)或 100 mg/ kg(分别为 NQ100 和 DQ100)。DQ10 e DQ100 不能防止总和胆碱能群体中的整体神经元丢失。硝能群体显示出关于治疗的差异:DQ10 保留了硝能群体中的神经元,而 DQ100 增加了硝能损失。通过叔丁基诱导的化学发光分析,对氧化还原状态的评估表明 NQ100 具有促氧化作用。我们观察到 DQ10 e DQ100 的羰基含量减少,低分子量抗氧化剂增加。因此,10 mg/kg 剂量的 QLM 治疗对氮能神经元有积极作用,减少由糖尿病引起的氧化损伤。
更新日期:2021-01-01
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