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  5. 蘆薈凝膠對全胃切除大鼠之免疫調節以及腸道菌相保健功效之研究
 
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蘆薈凝膠對全胃切除大鼠之免疫調節以及腸道菌相保健功效之研究

Other Title
Evaluating the Protective Effects of Aloe Vera Gel on the
Immunomodulation and Fecal Microflora in Total Gastrectomized Rats
Type
thesis
Date Issued
2007-06-29
Author(s)
復采蘋
Advisor
商惠芳
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:商惠芳
共同指導教授:
口試委員:林明燦;葉松鈴
中文關鍵字:蘆薈;全胃切除;免疫調節;腸道菌相;傷口復原
Abstract
胃癌為台灣的十大死因之一。每年許多罹患胃部腫瘤,或是胃潰瘍的病人會接受全胃或部分胃切除的治療。這些胃切除病人常出現腸道菌相不平衡、貧血、營養不良以及由於免疫功能降低而引起感染機率增加的後遺症。目前有許多支持性的飲食療法正被研發以減緩胃切除病人之後遺症。蘆薈在中、外醫學上已被廣乏應用,近年來亦有研究發現蘆薈含有植物性類固醇,具有減緩發炎、促進細胞新生及幫助組織修復等功效。故本研究擬利用全胃切除大白鼠的動物模式探討蘆薈凝膠的保健功效,比較飲食中添加蘆薈凝膠後對全胃切除大白鼠傷口癒合、免疫力、腸道菌相的影響。結果顯示在動物實驗中,全胃切除手術後會造成大鼠各種淋巴細胞比例下降,相較於對照組,服用蘆薈凝膠的組別各種淋巴細胞較能回復術前水準。蘆薈凝膠並可促進NK細胞之毒殺能力以及周邊血中整合素的表現,但對於周邊血吞噬細胞吞噬能力、脾臟及小腸淋巴結內淋巴細胞的重新分布、分裂能力及受刺激後細胞激素的釋放等則無明顯調節作用。在腸道菌相的結果發現服用蘆薈凝膠可抑制大腸桿菌的增殖,但不會促進益生菌叢的增生。進一步的細胞實驗中,蘆薈凝膠不但具有促進巨噬細胞株RAW264.7之吞噬能力,亦能促進其NO的分泌量。而以NIH/3T3細胞觀察蘆薈凝膠對傷口復原能力之試驗時,則可發現5%、10%、15%蘆薈凝膠對損傷的NIH/3T3細胞均有促進細胞移動、生長之效果。綜合評估:蘆薈凝膠具有抑菌、促進吞噬細胞活性和NK細胞毒殺能力之免疫調節功能,對全胃切除老鼠之動物模式具一定的保健功效,但蘆薈凝膠對傷口復原影響之評估仍有賴進一步的實驗來證實。
URI
https://203.71.86.71/handle/123456789/12113
https://hdl.handle.net/11296/gh67fh
File(s)
No Thumbnail Available
Name

C0183495.pdf

Size

7.34 MB

Format

Adobe PDF

Checksum

(MD5):787d13a4e113a956e657cee53a992564

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