【摘要】：目的:通過觀察不同濃度的氫化可的松、醋酸潑尼松龍、地塞米松磷酸鈉對人A375黑素瘤細胞的生長、酪氨酸酶活性以及黑素生成的影響,探討皮質(zhì)類固醇治療白癜風的可能作用機制。 方法:用不同濃度的氫化可的松、醋酸潑尼松龍、地塞米松磷酸鈉處理人A375黑素瘤細胞,通過MTT比色法觀察它們對人A375黑素瘤細胞生長的影響,用多巴氧化法測定酪氨酸酶活性的變化,用NaOH裂解法測定黑素的含量。 結(jié)果:1.三種藥物對人A375黑素瘤細胞代謝的影響:與對照組相比,氫化可的松的濃度為10~(-6)～10~(-5) M時隨著藥物濃度的增加,細胞數(shù)目呈增加趨勢(p 0.05),細胞生長旺盛,而濃度為10~(-9)～10~(-5) M的醋酸潑尼松龍、地塞米松磷酸鈉對人A375黑素瘤細胞的代謝卻沒有影響(p0.05)。 2.三種藥物對人A375黑素瘤細胞酪氨酸酶活性的影響:3種藥物均顯示上調(diào)細胞的酪氨酸酶活性。其中地塞米松磷酸鈉在10~(-5) M～10~(-8) M濃度時顯示均可上調(diào)酪氨酸酶的活性(p 0.05),而氫化可的松和醋酸潑尼松龍僅在10~(-5) M和10~(-6)M濃度時才顯示上調(diào)酪氨酸酶活性(p 0.05),其中10~(-5) M地塞米松磷酸鈉作用最明顯,使酪氨酸酶的活性增加最多。 3.三種藥物對人A375黑素瘤細胞黑素含量的影響:3種藥物均顯示上調(diào)細胞的黑素含量。其中地塞米松磷酸鈉在10~(-5) M～10~(-8) M濃度時均可上調(diào)黑素含量(p 0.05),而氫化可的松和醋酸潑尼松龍僅在10~(-5) M和10~(-6) M濃度時才顯示上調(diào)黑素含量(p 0.05),其中10~(-5) M地塞米松磷酸鈉作用最明顯,使黑素含量增加最多。 結(jié)論:一定濃度的氫化可的松可以促進人A375黑素瘤細胞增殖;一定濃度的氫化可的松、醋酸潑尼松龍、地塞米松磷酸鈉皆可以上調(diào)酪氨酸的活性,促進黑素的合成。
[Abstract]:Aim: to observe the effects of hydrocortisone, prednisolone acetate and dexamethasone phosphate on the growth, tyrosinase activity and melanogenesis of human A375 melanoma cells. To explore the possible mechanism of corticosteroid in the treatment of vitiligo. Methods: human A375 melanoma cells were treated with different concentrations of hydrocortisone, prednisolone acetate and dexamethasone phosphate. The effects of hydrocortisone, prednisolone acetate and dexamethasone sodium phosphate on the growth of human A375 melanoma cells were observed by MTT colorimetry. The activity of tyrosinase was determined by dopa oxidation method and the content of melanin was determined by NaOH pyrolysis method. The result is 1: 1. Effects of three drugs on Metabolism of Human A375 melanoma cells: compared with the control group, when the concentration of hydrocortisone was 10 ~ (-6) ~ 10 ~ (-5) M, the number of cells increased with the increase of drug concentration (p 0.05). However, 10 ~ (-9) ~ 10 ~ (-5) M prednisolone acetate and dexamethasone sodium phosphate had no effect on the metabolism of human A375 melanoma cells (p0.05). Effects of three drugs on tyrosinase activity in human A375 melanoma cells: all three drugs showed up-regulated tyrosinase activity. Dexamethasone sodium phosphate could upregulate tyrosinase activity at 10 ~ (-5) M ~ (-8) M concentration (p 0.05), while hydrocortisone and prednisolone acetate showed up-regulated tyrosinase activity only at 10 ~ (-5) M and 10 ~ (-6) M concentrations (p 0.05). The effect of 10 ~ (-5) M dexamethasone sodium phosphate was the most obvious. Tyrosinase activity increased the most. 3. Effects of three drugs on melanin content in human A375 melanoma cells: all three drugs showed up-regulation of melanin content. Dexamethasone sodium phosphate upregulated melanin content (p0.05) at 10 ~ (-5) M ~ (-8) M concentration, while hydrocortisone and prednisolone acetate only increased melanin content (p 0.05) at the concentrations of 10 ~ (-5) M and 10 ~ (-6) M, of which 10 ~ (-5) M dexamethasone increased melanin content (p0.05). Sodium phosphate has the most obvious effect. The content of melanin increased the most. Conclusion: hydrocortisone at a certain concentration can promote the proliferation of human A375 melanoma cells, and hydrocortisone, prednisolone acetate and dexamethasone phosphate can up-regulate tyrosine activity and promote melanin synthesis.
【學位授予單位】：南華大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：R739.5

【參考文獻】

相關期刊論文 前10條

1 劉棟,朱文元,譚城;皮質(zhì)類固醇對培養(yǎng)Cloudman S91黑素瘤細胞株黑素合成的影響[J];臨床皮膚科雜志;2003年01期

2 冉立偉,譚升順,楚瑞奇,張江安,劉安,文京華;鹵米松乳膏聯(lián)合補骨脂素治療尋常型白癜風[J];臨床皮膚科雜志;2004年02期

3 李建軍;鄭錦芬;江智茂;張芳婷;鐘綺麗;馬剛;程濱珠;;不含佛波醇酯和霍亂毒素條件下黑素細胞的培養(yǎng)[J];嶺南皮膚性病科雜志;2006年05期

4 洪為松,尉曉冬,周渭珩,許愛娥;血清中抗酪氨酸酶抗體的檢測與白癜風活動性的關系[J];中國麻風皮膚病雜志;2005年09期

5 陳菊萍;冉玉平;魏大鵬;周光平;;人黑素細胞培養(yǎng)最佳條件的選擇和生物學鑒定[J];中國麻風皮膚病雜志;2007年03期

6 王秋楓;酪氨酸酶相關蛋白家族[J];中國美容醫(yī)學;2003年01期

7 楊慧蘭;李翠華;李雪梅;樊建勇;林挺;劉仲榮;楊慶永;吳燕虹;梁潔;;白癜風的治療現(xiàn)狀與進展[J];中國美容醫(yī)學;2006年01期

8 阮高波;李永偉;許愛娥;尉曉東;;酪醇和胡椒堿對小鼠B16黑素瘤細胞黑素合成及c-KIT、TRP-2蛋白表達的促進作用[J];中國中醫(yī)藥科技;2009年03期

9 劉璋,韓瑞玲;黃芩提取物對體外培養(yǎng)小鼠黑素瘤細胞黑素生成的調(diào)節(jié)作用[J];武漢職業(yè)技術學院學報;2004年03期

10 盧濤,劉源,金巖,高天文,董蕊,李強;兩段法培養(yǎng)適合臨床移植應用的黑素細胞的安全性研究[J];中國臨床康復;2004年17期

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