南昌大学学报(医学版)
南昌大學學報(醫學版)
남창대학학보(의학판)
ACTA ACADEMIAE MEDICINAE JIANGXI
2014年
9期
1-5,12
,共6页
张昆南%唐英%刘世民%胡国柱%杨赟%吴晓牧
張昆南%唐英%劉世民%鬍國柱%楊赟%吳曉牧
장곤남%당영%류세민%호국주%양빈%오효목
糖尿病,2 型%多形拟杆菌%血糖%胰岛素%体质量%动物,实验%大鼠
糖尿病,2 型%多形擬桿菌%血糖%胰島素%體質量%動物,實驗%大鼠
당뇨병,2 형%다형의간균%혈당%이도소%체질량%동물,실험%대서
diabetes mellitus,type 2%Bacteroides thetaiotaomicron%plasma glucose%insulin%body mass%animals,laboratory%rats
目的:探讨多形拟杆菌对大鼠血糖的影响。方法将46只 SD 大鼠按体质量的不同分为5组:普通饲料喂养组(A 组,n=8)、高脂饲料喂养组(B 组,n=8)、高脂饲料喂养+多形拟杆菌菌液灌喂组(C 组,n=8)、糖尿病模型组(D 组,n=10)和糖尿病模型+多形拟杆菌菌液灌喂组(E 组,n=11)。A 组采用普通饲料喂养,B、C、D 和 E 4组采用40%脂肪和胰岛素抵抗诱导模型饲料,每只大鼠25 g·d-1饲料喂养。适应性喂养4周后,隔夜空腹12 h,D、E 2组大鼠腹腔注射链脲佐菌素(STZ)溶液35 mg·kg-1;A、B 和 C 3组大鼠腹腔注射0.1 mol·L-1柠檬酸钠缓冲液。A、B 和 C 3组大鼠均造模成功,D 组死亡2只,E 组死亡3只。实验第1天开始,C、E 2组大鼠采用多形拟杆菌菌液灌胃,连续7 d;A、B 和 D 3组采用等量0.9%氯化钠注射液灌胃,连续7 d。5组大鼠第0—12周采用电子秤称体质量1次。第0、4、8和12周,使用全自动生化仪、采用己糖激酶法检测5组大鼠空腹血糖(FPG)水平,采用ELISA 法检测5组大鼠血清胰岛素水平,实时荧光定量 PCR 法测定5组大鼠肠道多形拟杆菌的数量。结果与A、B 2组比较,C 组大鼠第1—12周体质量均明显增加,D、E 2组大鼠第6—12周体质量均明显降低,C 组大鼠第8、12周 FPG 水平均显著升高,D、E 2组大鼠第4、8和12周 FPG 水平均显著升高,C、D 和 E 3组大鼠第4、8和12周血清胰岛素水平均显著升高、肠道多形拟杆菌的数量均显著增多(P <0.05或 P <0.01)。与 C 组比较,D、E 2组大鼠第1—12周体质量均明显降低,第4、8和12周 FPG 水平均显著升高、血清胰岛素水平均显著降低和肠道多形拟杆菌的数量均显著增多(P <0.05或 P <0.01)。与 D 组比较,E 组大鼠第6—12周体质量均明显增加,第4、8和12周 FPG 水平均显著升高、血清胰岛素水平均显著降低,第8、12周肠道多形拟杆菌的数量均显著增多(P <0.05或 P <0.01)。肠道多形拟杆菌的数量与体质量、FPG 水平均呈正相关(r=0.163、0.684,P <0.05或 P <0.01),与血清胰岛素水平无相关性(r=-0.019,P >0.05)。结论大鼠肠道多形拟杆菌不但能促进大鼠体质量增加,而且升高 FPG。
目的:探討多形擬桿菌對大鼠血糖的影響。方法將46隻 SD 大鼠按體質量的不同分為5組:普通飼料餵養組(A 組,n=8)、高脂飼料餵養組(B 組,n=8)、高脂飼料餵養+多形擬桿菌菌液灌餵組(C 組,n=8)、糖尿病模型組(D 組,n=10)和糖尿病模型+多形擬桿菌菌液灌餵組(E 組,n=11)。A 組採用普通飼料餵養,B、C、D 和 E 4組採用40%脂肪和胰島素牴抗誘導模型飼料,每隻大鼠25 g·d-1飼料餵養。適應性餵養4週後,隔夜空腹12 h,D、E 2組大鼠腹腔註射鏈脲佐菌素(STZ)溶液35 mg·kg-1;A、B 和 C 3組大鼠腹腔註射0.1 mol·L-1檸檬痠鈉緩遲液。A、B 和 C 3組大鼠均造模成功,D 組死亡2隻,E 組死亡3隻。實驗第1天開始,C、E 2組大鼠採用多形擬桿菌菌液灌胃,連續7 d;A、B 和 D 3組採用等量0.9%氯化鈉註射液灌胃,連續7 d。5組大鼠第0—12週採用電子秤稱體質量1次。第0、4、8和12週,使用全自動生化儀、採用己糖激酶法檢測5組大鼠空腹血糖(FPG)水平,採用ELISA 法檢測5組大鼠血清胰島素水平,實時熒光定量 PCR 法測定5組大鼠腸道多形擬桿菌的數量。結果與A、B 2組比較,C 組大鼠第1—12週體質量均明顯增加,D、E 2組大鼠第6—12週體質量均明顯降低,C 組大鼠第8、12週 FPG 水平均顯著升高,D、E 2組大鼠第4、8和12週 FPG 水平均顯著升高,C、D 和 E 3組大鼠第4、8和12週血清胰島素水平均顯著升高、腸道多形擬桿菌的數量均顯著增多(P <0.05或 P <0.01)。與 C 組比較,D、E 2組大鼠第1—12週體質量均明顯降低,第4、8和12週 FPG 水平均顯著升高、血清胰島素水平均顯著降低和腸道多形擬桿菌的數量均顯著增多(P <0.05或 P <0.01)。與 D 組比較,E 組大鼠第6—12週體質量均明顯增加,第4、8和12週 FPG 水平均顯著升高、血清胰島素水平均顯著降低,第8、12週腸道多形擬桿菌的數量均顯著增多(P <0.05或 P <0.01)。腸道多形擬桿菌的數量與體質量、FPG 水平均呈正相關(r=0.163、0.684,P <0.05或 P <0.01),與血清胰島素水平無相關性(r=-0.019,P >0.05)。結論大鼠腸道多形擬桿菌不但能促進大鼠體質量增加,而且升高 FPG。
목적:탐토다형의간균대대서혈당적영향。방법장46지 SD 대서안체질량적불동분위5조:보통사료위양조(A 조,n=8)、고지사료위양조(B 조,n=8)、고지사료위양+다형의간균균액관위조(C 조,n=8)、당뇨병모형조(D 조,n=10)화당뇨병모형+다형의간균균액관위조(E 조,n=11)。A 조채용보통사료위양,B、C、D 화 E 4조채용40%지방화이도소저항유도모형사료,매지대서25 g·d-1사료위양。괄응성위양4주후,격야공복12 h,D、E 2조대서복강주사련뇨좌균소(STZ)용액35 mg·kg-1;A、B 화 C 3조대서복강주사0.1 mol·L-1저몽산납완충액。A、B 화 C 3조대서균조모성공,D 조사망2지,E 조사망3지。실험제1천개시,C、E 2조대서채용다형의간균균액관위,련속7 d;A、B 화 D 3조채용등량0.9%록화납주사액관위,련속7 d。5조대서제0—12주채용전자칭칭체질량1차。제0、4、8화12주,사용전자동생화의、채용기당격매법검측5조대서공복혈당(FPG)수평,채용ELISA 법검측5조대서혈청이도소수평,실시형광정량 PCR 법측정5조대서장도다형의간균적수량。결과여A、B 2조비교,C 조대서제1—12주체질량균명현증가,D、E 2조대서제6—12주체질량균명현강저,C 조대서제8、12주 FPG 수평균현저승고,D、E 2조대서제4、8화12주 FPG 수평균현저승고,C、D 화 E 3조대서제4、8화12주혈청이도소수평균현저승고、장도다형의간균적수량균현저증다(P <0.05혹 P <0.01)。여 C 조비교,D、E 2조대서제1—12주체질량균명현강저,제4、8화12주 FPG 수평균현저승고、혈청이도소수평균현저강저화장도다형의간균적수량균현저증다(P <0.05혹 P <0.01)。여 D 조비교,E 조대서제6—12주체질량균명현증가,제4、8화12주 FPG 수평균현저승고、혈청이도소수평균현저강저,제8、12주장도다형의간균적수량균현저증다(P <0.05혹 P <0.01)。장도다형의간균적수량여체질량、FPG 수평균정정상관(r=0.163、0.684,P <0.05혹 P <0.01),여혈청이도소수평무상관성(r=-0.019,P >0.05)。결론대서장도다형의간균불단능촉진대서체질량증가,이차승고 FPG。
Objective To explore the effect of Bacteroides thetaiotaomicron(BT)on the levels of plasma glucose in rats.Methods According to different levels of body mass,46 SD rats were divided into five groups:normal diet group(group A,n=8),high-fat diet group(group B,n=8), high-fat diet plus BT gavage group(group C,n=8),diabetes model group(group D,n=10),and diabetes induction plus BT suspension gavage group(group E,n=11).Rats were fed with ordina-ry feed in group A and with 40% fat and insulin resistance model feed in group B,C,D and E. Each rat was fed with feed 25 g per day.After 4 weeks of adaptive feeding and 12 hours of over-night fasting,rats were intraperitoneally injected with 35 mg·kg-1 streptozotocin in group D and E,and with 0.1 mol·L-1 sodium citrate buffer in group A,B and C.The rat models were suc-cessfully established.However,2 rats died in group D and 3 in group E.During the first day of ex-periment,rats in group C and E were gavaged with BT suspension intragastric administration and rats in group A,B and D with the same amount of 0.9% sodium chloride injection intragastric ad-ministration once a day for 7 days.The body mass was weighed with electronic scale once a week for 12 weeks.At weeks 0,4,8 and 12,the levels of fasting plasma glucose(FPG)were detected by hexokinase method,the levels of fasting insulin(FINS)by ELISA,and the number of intestinal tract by Real-time PCR in all the five groups.Results Compared with group A and B,body mass increased from the 1st to 12th week in group C and decreased from the 6 th to 12 th week in group D and E,levels of FPG increased at weeks 8 and 12 in group C and at weeks 4,8 and 12 in group D and E,and levels of FINS and number of BT increased at weeks 4,8 and 12 in group C,D and E (P <0.05 or P <0.01).Compared with group C,body mass decreased from the 1st to 12 th week in group D and E,and levels of FPG and FINS and number of BT increased at weeks 4,8 and 12 in group D and E(P <0.05 or P <0.01).Compared with group D,body mass increased from the 6 th to 12th week,levels of FPG increased at weeks 4,8 and 12,levels of FINS decreased at weeks 4,8 and 12,and number of BT increased at weeks 8 and 12 in group E(P <0.05 or P <0.01).The number of BT in intestinal tract were positively correlated with body mass and FPG levels(r =0.163 and 0.684,respectively;P <0.05 or P <0.01),but were not correlated with FINS levels (r=-0.019,P >0.05).Conclusion The BT in intestinal tract can increase body mass and FPG levels in rats.