胃旁路術對2型糖尿病大鼠血糖及瘦素的影響
本文選題:胃旁路術 + 2型糖尿病。 參考:《吉林大學》2015年碩士論文
【摘要】:目的:胃旁路手術是用于治療肥胖癥的常用手術方式,以往研究中還發(fā)現(xiàn)合并2型糖尿病的肥胖患者在實施這一手術后,除了體重可以有一定幅度的下降外,糖尿病癥狀在一定程度上也可得到相應的緩解,但其作用機制尚不完全清楚。本研究通過觀察胃旁路術對2型糖尿病大鼠的治療效果,以及血清和肝臟瘦素水平的改變,探討瘦素水平對肥胖及2型糖尿病的關系,進而探索胃旁路術治療2型糖尿病的潛在機制。 方法:研究以Wistar大鼠為研究對象,共需要120只,隨機分成三組,第一組是手術實驗組(O組)數(shù)量為60只,第二組為假手術實驗組(S組)數(shù)量為40只,第三組為對照組(C組)數(shù)量為20只。為了本實驗制造2型糖尿病模型,將O組及S組大鼠進行4周的高脂飲食喂養(yǎng)后,并對其腹腔進行鏈脲佐菌素(STZ)注射,針對完成模型制造的O組和S組分別施以胃旁路手術。C組的Wistar鼠則無需特殊飼養(yǎng)處理。針對每組研究對象的空腹以及隨機血糖和體重變化做四次檢測,于術前和術后第l、2、4周檢測各組大鼠隨機血糖、空腹血糖、體重和瘦素的變化,通過酶聯(lián)免疫吸附實驗(ELISA)方法,在術前和術后第4周檢測肝臟瘦素的變化。 結果:1、與術前相比,O組大鼠在術后第2周的空腹和隨機血糖均明顯降低,空腹血糖由術前的19.62.5mmol/L降低到術后的7.32.1mmol/L(P0.05),隨機血糖含量則由術前的28.82.7mmol/L降至術后11.72.7mmol/L(P0.05)。手術后第四周的兩個血糖測定值都比較穩(wěn)定,空腹值是4.91.9mmol/L(P0.05),隨機值是10.72.6mmol/L(P0.05)。對比手術前后,S組和C組大鼠的空腹血糖和隨機血糖變化并沒有顯著性差異(P0.05)。2、從術后第4周開始,O組大鼠的體重有顯著下降,從手術前的27923.8mg降到了19912.3mg(P0.05)。S組和C組的瘦素水平在手術前后的變化則無顯著性差異(P0.05)。3、手之術后第二周,對手術組大鼠體內的血清瘦素水平進行測定,測得的血清瘦素含量在手術后第二周發(fā)生了顯著減少,從5.90.52ng/ml降至2.10.5ng/ml(P0.05),,手術以后第四周測得含量數(shù)值為1.90.5ng/ml(P0.05)。跟手術前比對發(fā)現(xiàn),S組跟C組在這兩組檢測指標上也沒有明顯變化(P0.05)。4、手術后第四周的指標測量發(fā)現(xiàn),手術之后的第四周,對于O組的大鼠瘦素水平的測量結果來看,有顯著提升,含量則由0.040.02ng/mg提高到0.360.31ng/mg(P0.05)。S組以及C組的指標測量結果都沒有明顯變化(P0.05)。結論:Wistar糖尿病大鼠的空腹血糖、隨機血糖和體重,在經(jīng)過胃旁路術后均顯著降低。胃旁路術可調節(jié)血清中瘦素的濃度,使血清瘦素濃度降低,這對改善血糖水平、減輕體重發(fā)揮重要的功效,可以很好的減輕2型糖尿病癥狀。并且,通過此手術,能夠提高肝臟瘦素的含量水平,可以極大改善肝胰島素的抵抗,進而對于2型糖尿病的緩解以及治療都會產(chǎn)生有利影響。
[Abstract]:Objective: gastric bypass surgery is commonly used to treat obesity. Previous studies have also found that obese patients with type 2 diabetes can lose their weight by a certain extent after this operation.The symptoms of diabetes can also be alleviated to some extent, but its mechanism is not completely clear.By observing the therapeutic effect of gastric bypass surgery on type 2 diabetic rats and the changes of serum and liver leptin levels, the relationship between leptin level and obesity and type 2 diabetes mellitus was studied.To explore the potential mechanism of gastric bypass surgery in the treatment of type 2 diabetes.Methods: a total of 120 Wistar rats were randomly divided into three groups: the first group was the experimental group (n = 60) and the second group was the sham operation group (n = 40).The third group was control group C (n = 20).In order to establish the model of type 2 diabetes mellitus, the rats in group O and group S were fed with high-fat diet for 4 weeks and were injected with streptozotocin (STZ) intraperitoneally.Wistar rats in group O and group S were treated with gastric bypass surgery respectively without special feeding.The changes of fasting blood glucose, fasting blood glucose, body weight and leptin in each group were measured four times before and 4 weeks after operation. The changes of blood glucose, fasting blood glucose, body weight and leptin in each group were measured by enzyme linked immunosorbent assay (Elisa).The changes of liver leptin were detected before and 4 weeks after operation.Results compared with those before operation, the fasting and random blood glucose of rats in the O group decreased significantly from preoperative 19.62.5mmol/L to 7.32.1 mmol / L P 0.05, and the content of random blood glucose decreased from preoperative 28.82.7mmol/L to 11.72.7 mmol / L / L P 0.05.At the fourth week after operation, the two blood glucose levels were stable, with an fasting value of 4.91.9 mmol / L (P 0.05) and a random value of 10.72.6 mmol / L (P 0.05).There was no significant difference in fasting blood glucose and random blood glucose between group S and group C before and after operation. The weight of rats in group O decreased significantly from the 4th week after operation.The level of leptin in group 19912.3mg(P0.05).S and group C had no significant difference before and after operation from 27923.8mg before and after operation. The serum leptin level of rats in operation group was measured at the second week after operation.The serum leptin level was significantly decreased from 5.90.52ng/ml to 2.10.5ngml / ml P0.05N in the second week after operation, and was 1.90.5ng / ml / ml P0.05N at the fourth week after operation.Comparing with pre-operation, we found that there was no significant change in the detection indexes between group S and group C in these two groups. The index measurement in the fourth week after operation found that the leptin level in group O was measured in the fourth week after operation.There was a significant increase in the content from 0.040.02ng/mg to 0.360.31ng/mg(P0.05).S and C group. There was no significant change in the measurement results of P0.05.Conclusion the fasting blood glucose, random blood glucose and body weight of Wistar rats were significantly decreased after gastric bypass.Gastric bypass can regulate serum leptin concentration and reduce serum leptin concentration, which plays an important role in improving blood glucose level and reducing body weight, and can alleviate the symptoms of type 2 diabetes.Through this operation, the level of leptin in the liver can be increased, and the insulin resistance in the liver can be greatly improved, which will have a beneficial effect on the remission and treatment of type 2 diabetes mellitus.
【學位授予單位】:吉林大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:R587.1;R656.6
【相似文獻】
相關期刊論文 前10條
1 梁越;孟興凱;喬建梁;齊力;;胃旁路術治療2型糖尿病的機制[J];內蒙古醫(yī)學院學報;2008年02期
2 張惠卿;郭蘭栓;;胃旁路術治療2型糖尿病[J];中國現(xiàn)代普通外科進展;2010年11期
3 閻波;侯坤;韓策然;陸友國;楊燕林;竇科峰;;腹腔鏡胃旁路術治療2型糖尿病效果探討[J];中華腔鏡外科雜志(電子版);2012年01期
4 蔣李園;;腹腔鏡下胃旁路術治療2型糖尿病療效觀察[J];醫(yī)學理論與實踐;2013年09期
5 劉昕;賀永剛;尹家俊;;胃旁路術治療2型糖尿病的機制與展望[J];中外醫(yī)療;2013年26期
6 張能維;路夷平;胡江;劉玉德;趙愛民;李凱;王桐生;劉晨;王睿斌;;腹腔鏡胃旁路術治療肥胖癥7例報告[J];中國實用外科雜志;2006年09期
7 周建英;馬向華;;胃旁路術減肥同時改善糖代謝的機制[J];國際內分泌代謝雜志;2007年04期
8 李昆;韓曉東;狄建忠;張弘瑋;周玉龍;杜貽豹;張頻;;重度肥胖患者腹腔鏡胃旁路術后味覺的改變[J];腹腔鏡外科雜志;2014年01期
9 吳雅琴;山艷;莊敏;;2型糖尿病合并肥胖患者胃旁路術中核心體溫監(jiān)測[J];上海護理;2014年04期
10 蔡景理;鄭成竹;陳丹磊;李心翔;李磊;吳金聲;胡旭光;李際輝;印慨;柯重偉;;腹腔鏡迷你胃旁路術治療單純性肥胖并2型糖尿病[J];中國實用外科雜志;2008年03期
相關會議論文 前6條
1 趙蓉芝;;我院一例腹腔鏡下胃旁路術治療2型糖尿病護理及療效觀察[A];中國醫(yī)院協(xié)會病案管理專業(yè)委員會第二十二屆學術會議論文集[C];2013年
2 張士虎;苗毅;;胃旁路術對糖尿病大鼠的降糖作用及其機制探討[A];中華醫(yī)學會第十一屆全國胰腺外科學術研討會論文匯編[C];2006年
3 陳慶會;劉納新;;改良RYGB術(胃旁路術)對肥胖大鼠體重的影響[A];2012年浙江省腸外腸內營養(yǎng)學學術年會論文集[C];2012年
4 陳慶會;;改良RYGB術(胃旁路術)對肥胖大鼠體重的影響[A];2012年浙江省外科學學術年會論文集[C];2012年
5 曹艷紅;;經(jīng)腹腔鏡Roux-en-y胃旁路術的手術配合[A];2012年河南省現(xiàn)代手術室護理安全暨管理學術交流會議論文集[C];2012年
6 武倩琳;肖竹;程中;田浩明;;Roux-en-Y胃旁路術對BMI≥28 kg/m~2的中國2型糖尿病患者血糖和胃腸道激素的影響及其機制[A];中華醫(yī)學會糖尿病學分會第十六次全國學術會議論文集[C];2012年
相關博士學位論文 前1條
1 李肖珂;Roux-en-Y胃旁路術對SD大鼠GLP-1和腸道菌群的影響[D];第二軍醫(yī)大學;2014年
相關碩士學位論文 前10條
1 楊建江;胃旁路術對2型糖尿病患者血壓和血糖影響的臨床觀察[D];第三軍醫(yī)大學;2013年
2 張士虎;胃旁路術對非肥胖型糖尿病大鼠的降糖作用及其與胰高血糖素樣肽-1的關系[D];南京醫(yī)科大學;2006年
3 李詩言;胃旁路術治療2型糖尿病機制的研究[D];吉林大學;2014年
4 喻敏;不同胃容積Roux-en-Y胃旁路術對非肥胖2型糖尿病大鼠的療效研究[D];福建醫(yī)科大學;2013年
5 劉賢明;胃旁路術對營養(yǎng)性肥胖大鼠脂代謝影響的實驗研究[D];暨南大學;2011年
6 劉斌;胃容積對非肥胖型T2DM患者術后降糖療效的影響[D];福建醫(yī)科大學;2012年
7 田婷;胃旁路術對非肥胖2型糖尿病大鼠的降糖作用及其機制研究[D];南京醫(yī)科大學;2012年
8 張大林;胃旁路術對2型糖尿病大鼠血糖及瘦素的影響[D];吉林大學;2015年
9 趙長勇;Roux-en-Y胃旁路術與胃束帶術治療2型糖尿病大鼠的研究[D];揚州大學;2009年
10 都敏;十二指腸空腸曠置術與Roux-en-Y胃旁路術治療2型糖尿病的療效對比[D];遵義醫(yī)學院;2013年
本文編號:1759349
本文鏈接:http://sikaile.net/yixuelunwen/waikelunwen/1759349.html