老年慢性阻塞性肺疾病中硫氧還蛋白系統(tǒng)及谷胱甘肽系統(tǒng)表達(dá)的變化及意義
發(fā)布時間:2018-05-29 13:58
本文選題:慢性阻塞性肺疾病 + 硫氧還蛋白還原酶。 參考:《南華大學(xué)》2013年碩士論文
【摘要】:目的:研究硫氧還蛋白系統(tǒng)中的關(guān)鍵功能蛋白硫氧還蛋白1(TRX1)、硫氧還蛋白樣2(TRXL-2)、硫氧還蛋白還原酶(TRXR)和谷胱甘肽系統(tǒng)中的還原型谷胱甘肽1(GSH1)、γ-谷胱甘肽半胱氨酸合成酶(γ-GCS)在老年慢性阻塞性肺疾。–OPD)中的表達(dá)變化,初步探討硫氧還蛋白系統(tǒng)及谷胱甘肽系統(tǒng)在老年COPD中的抗氧化作用。 方法:收集不同年齡組的GOLD分級C級穩(wěn)定期的老年COPD病人和對照組的肺組織,及外周血和痰液。采用免疫組化實(shí)驗(yàn)檢測GSH1、TRX1、TRXL-2、TRXR、γ-GCS在肺組織中的表達(dá)。收集老年COPD病人及對照組的外周血及晨痰,采用Western blot實(shí)驗(yàn)檢測血細(xì)胞中GSH1、TRX1、TRXL-2、TRXR、γ-GCS的表達(dá)水平,采用ELISA實(shí)驗(yàn)檢測血漿、血清及痰液中GSH1、TRX1、TRXL-2、TRXR、γ-GCS的含量。 結(jié)果:免疫組化實(shí)驗(yàn)結(jié)果顯示GSH1、TRX1、TRXL-2、TRXR、γ-GCS在肺組織細(xì)胞中均有表達(dá),Western blot實(shí)驗(yàn)結(jié)果顯示血細(xì)胞中同樣存在目標(biāo)蛋白的表達(dá),ELISA實(shí)驗(yàn)結(jié)果顯示目標(biāo)蛋白在血漿、血清及痰液中也有表達(dá)。Western blot和ELISA實(shí)驗(yàn)結(jié)果表明:在血細(xì)胞、血漿、血清及痰液上清中,與對照組相比,老年COPD組GSH1、TRX1、TRXL-2、TRXR、γ-GCS的表達(dá)水平或含量均顯著上調(diào)(P 0.05)。COPD組內(nèi),隨著年齡的增加,目標(biāo)蛋白的表達(dá)水平或含量均顯著下降(P 0.05)。實(shí)驗(yàn)結(jié)果提示在老年COPD疾病中,,機(jī)體硫氧還蛋白系統(tǒng)與谷胱甘肽系統(tǒng)的抗氧化應(yīng)激功能增強(qiáng),但隨著年齡的增加,兩大系統(tǒng)的抗氧化應(yīng)激功能逐漸降低。 結(jié)論: 硫氧還蛋白系統(tǒng)及谷胱甘肽系統(tǒng)參與了老年慢性阻塞性肺疾病的發(fā)病機(jī)制,為從硫氧還蛋白系統(tǒng)及谷胱甘肽系統(tǒng)角度研究老年性COPD疾病診斷、治療手段提供了新的思路
[Abstract]:Objective: to study the key functional proteins in thioredoxin system, thioredoxin 1 (TRX1), thioredoxin (2T), thioredoxin reductase (TRXR) and glutathione 1 (GSH 1), 緯-glutathione cysteine synthase (GST) in the thioredoxin system. Expression of 緯 -GCS in elderly patients with chronic obstructive pulmonary disease (COPD), To investigate the antioxidant effects of thioredoxin system and glutathione system in elderly COPD. Methods: lung tissue, peripheral blood and sputum were collected from elderly patients with GOLD grade C stable stage and control group. The expression of TRXL 2 TRXR, 緯 -GCS in lung tissue was detected by immunohistochemistry. Peripheral blood and morning sputum were collected from elderly patients with COPD and control group. The expression levels of TRXL 2 TRXR, 緯 -GCS in blood cells were detected by Western blot test. The contents of TRXL 2 TRXR, 緯 -GCS in plasma, serum and sputum were detected by ELISA test. Results: the results of immunocytochemistry showed that GSH1TX1 TRXL-2 TRXR, 緯 -GCS were all expressed in lung tissue cells. Western blot assay showed that there was the same expression of target protein in blood cells. The results of Elisa showed that the target protein was in plasma. The results of Western blot and ELISA in serum and sputum showed that the expression level or content of GSH1TX 1 TRXL 2 TRXL 2 TRXR, 緯 -GCS in blood cell, plasma, serum and sputum supernatant were significantly up-regulated in P 0.05).COPD group with the increase of age, compared with the control group, the expression level or content of GSH1TX 1 TRXL 2 TRXL 2 TRXR, 緯 -GCS were significantly up-regulated in P 0.05).COPD group. The expression level or content of target protein decreased significantly (P 0.05). The results suggested that the antioxidant stress function of thioredoxin system and glutathione system was enhanced in the aged patients with COPD disease, but the antioxidant stress function of the two systems decreased gradually with the increase of age. Conclusion: Thioredoxin system and glutathione system are involved in the pathogenesis of chronic obstructive pulmonary disease in the elderly, which provides a new idea for the diagnosis and treatment of senile COPD disease from the perspective of thioredoxin system and glutathione system.
【學(xué)位授予單位】:南華大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:R563.9
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