کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6256935 1612945 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research reportAntidepressant activity of fluoxetine in the zinc deficiency model in rats involves the NMDA receptor complex
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Research reportAntidepressant activity of fluoxetine in the zinc deficiency model in rats involves the NMDA receptor complex
چکیده انگلیسی


- The effects of zinc deficiency (ZnD) and fluoxetine (FLX) treatment were examined.
- FLX counteracts ZnD-induced depression-like behavior in the FST.
- FLX counteracts ZnD-induced changes in GluN1, GluN2A, GluN2B and p-CREB in the Hp.
- Our data support ZnD-model of depression with improved predictive validity.

The zinc deficiency animal model of depression has been proposed; however, it has not been validated in a detailed manner. We have recently shown that depression-like behavior induced by dietary zinc restriction is associated with up-regulation of hippocampal N-methyl-d-aspartate receptor (NMDAR). Here we examined the effects of chronic administration of a selective serotonin reuptake inhibitor, fluoxetine (FLX), on behavioral and biochemical alterations (within NMDAR signaling pathway) induced by zinc deficiency. Male Sprague Dawley rats were fed a zinc adequate diet (ZnA, 50 mg Zn/kg) or a zinc deficient diet (ZnD, 3 mg Zn/kg) for 4 weeks. Then, FLX treatment (10 mg/kg, i.p.) begun. Following 2 weeks of FLX administration the behavior of the rats was examined in the forced swim test (FST) and the spontaneous locomotor activity test. Twenty four hours later tissue was harvested. The proteins of NMDAR (GluN1, GluN2A and GluN2B) or AMPAR (GluA1) subunits, p-CREB and BDNF in the hippocampus (Western blot) and serum zinc level (TXRF) were examined. Depression-like behavior induced by ZnD in the FST was sensitive to chronic treatment with FLX. ZnD increased levels of GluN1, GluN2A, GluN2B and decreased pS485-GluA1, p-CREB and BDNF proteins. Administration of FLX counteracted the zinc restriction-induced changes in serum zinc level and hippocampal GluN1, GluN2A, GluN2B and p-CREB but not BDNF or pS845-GluA1 protein levels. This finding adds new evidence to the predictive validity of the proposed zinc deficiency model of depression. Antidepressant-like activity of FLX in the zinc deficiency model is associated with NMDAR complex.

The effects of fluoxetine on zinc deficiency induced alterations. Legend: FST - forced swim test; Hp - hippocampus; ↔ - normalization.112

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Brain Research - Volume 287, 1 July 2015, Pages 323-330
نویسندگان
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