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  5. 女貞子成份對硫酸吲哚酚誘發的毒性在小鼠骨母細胞之保護效果
 
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女貞子成份對硫酸吲哚酚誘發的毒性在小鼠骨母細胞之保護效果

Other Title
The protective effects of components in Ligustrum lucidum Ait against Indoxyl sulfate-induced toxicity on mice osteoblast cells
Type
thesis
Date Issued
2017-01-20
Author(s)
常文洪
Advisor
許秀蘊
Subjects
系所名稱:生藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:許秀蘊
口試委員:孫瑞昇;林淑娟
中文關鍵字:骨母細胞;慢性腎臟病導致礦物質與骨骼代謝異常的系統性疾病;硫酸吲哚酚;女貞子
英文關鍵字:Osteoblast;Chronic kidney disease-mineral and bone disorder (CKD-MBD);Indoxyl sulfate;Ligustrum lucidum Ait
Abstract
慢性腎臟疾病 (Chronic kidney disease, CKD) 是全球公認的公共衛生問題,在台灣,估計有超過150萬人患有慢性腎臟病,隨著CKD病情的進展,可能引發相關的綜合併發症,包括體液和電解質的不平衡,代謝性酸中毒,貧血和繼發性副甲狀腺功能亢進,且經常伴隨腎性骨營養不良等症狀。
在近期研究發現,CKD所誘導的礦物質紊亂和骨疾病併發症,可能間接導致心血管疾病造成高死亡率,因此全球腎臟疾病改善組織( Kidney Disease: Improving Global Outcomes, KDIGO )建議使用“慢性腎臟病導致礦物質與骨骼代謝異常的系統性疾病”(Chronic Kidney Disease-Mineral and Bone Disorder, CKD-MBD)來描述CKD 引發的臨床綜合症狀。
硫酸吲哚酚 ( Indoxyl sulfate, IS ) 為一種尿毒症毒素,會長期累積在CKD患者的血清中。通常來源為飲食中的蛋白質分解成色氨酸後,經由腸道細菌代謝為吲哚,當吲哚吸收到血液中時,會到肝臟中代謝為IS。IS通常由尿液排泄。但在CKD的病患,IS會因腎清除率的下將,導致血清中IS的濃度升高。有文獻報導指出,IS會誘導骨母細胞中的氧化應激,必且加速CKD病情、心血管疾病和骨營養不良的進展。
在傳統中醫治療上認為,腎臟的狀態是滋養骨髓的重要因素。因此,在本研究中,以女貞子Ligustrum lucidum Ait果實中的三種成份齊墩果酸 ( Oleanolic acid, OA)、熊果酸(Ursolic acid, UA)和紅景天苷( Salidroside, SDS),探討硫酸吲哚酚誘導的骨母細胞毒性之保護作用。
結果顯示,IS在10-4M濃度下,會顯著降低骨母細胞的活性及產生大量一氧化氮( NO ),並經由有機陰離子通道第1型 ( Organic anion transporter-1, OAT-1 )及有機陰離子通道第3型( Organic anion transporter-1, OAT-3 )進入到骨母細胞後,上調骨礦化指標第I型膠原蛋白( Collagen type I, Col-1 )及骨鈣素( Osteocalcin, OCN ),並且也會上調骨代謝指標成纖維細胞生長因子 ( Fibroblast growth factor, FGF23 )及副甲狀腺激素 ( Parathyroid hormone receptor, PTHR )。而OA在10-5M濃度時,1-3天可以抑制OAT-1 mRNA表現。UA在10-5M濃度下,可以抑制IS所造成Col-1及OCN mRNA的上升。SDS在10-6M濃度下,第7天還可以抑制NO的產生及增加ALP的活性。而這個三個成份都可以平衡IS所造成的FGF23失調及抑制PTHR的上調。
這些結果表示,女貞子三個成份會對於IS所造成的傷害,有各種不同面向的修復,表示OA、UA、SDS可延緩CKD-MBD的進展及症狀。
URI
https://203.71.86.71/handle/123456789/57761

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