CAJ | 학술논문

目的：探究孕期低强度游泳运动对哺乳期过度喂养子代肥胖大鼠（OF大鼠）下丘脑弓状核食欲调控肽异常表达水平的影响，为预防围产期过度喂养型肥胖提供理论依据。方法：80只SD雌性大鼠妊娠后第3天，随机选取22只母鼠孕期低强度游泳运动至分娩结束（10min／day，6days／week）。母鼠分娩后第2天随机将每窝仔鼠喂养数目调整为4只和10只，断乳后最终获得实验分组为孕期安静＋哺乳期正常喂养模型对照组（DBC1，n=8）、孕期安静＋哺乳期过度喂养断乳后OF对照组（CSC1，n=8）和孕期低强度游泳运动＋哺乳期过度喂养断乳后OF组（ESC1，n=8）。禁食后次日取材，采用原位杂交技术检测下丘脑弓状核NPY、POMC和LRbmRNA表达；放射免疫法测血清胰岛素和瘦素；酶化学法检测血清血糖和血脂。结果：KSCl组的体重、Lee指数、血瘦素、血胰岛素、血糖、IGR、‘TG和TC与cscl组相比无显著降低（P〉0．05）；CNC1组下丘脑弓状核POMC和NPYmRNA水平均显著低于CSC1组（Pd0．01），而CNC1组下丘脑弓状核LRbmRNA水平显著高于CSCl组（P〈0．01）；ESCl组下丘脑弓状核POMCmRNA显著高于CSCl组（P〈0．01），NPY和U地mRNA水平与CSC1组相比无显著性差异（P〉0．05）。结论：孕期低强度游泳运动和哺乳期过度喂养均可对子代大鼠下丘脑弓状核POMCmRNA表达产生可塑性的影响，但是孕期低强度游泳运动对OF大鼠过度进食诱发的肥胖表型无显著预防效果。
목적：탐구잉기저강도유영운동대포유기과도위양자대비반대서（OF대서）하구뇌궁상핵식욕조공태이상표체수평적영향，위예방위산기과도위양형비반제공이론의거。방법：80지SD자성대서임신후제3천，수궤선취22지모서잉기저강도유영운동지분면결속（10min／day，6days／week）。모서분면후제2천수궤장매와자서위양수목조정위4지화10지，단유후최종획득실험분조위잉기안정＋포유기정상위양모형대조조（DBC1，n=8）、잉기안정＋포유기과도위양단유후OF대조조（CSC1，n=8）화잉기저강도유영운동＋포유기과도위양단유후OF조（ESC1，n=8）。금식후차일취재，채용원위잡교기술검측하구뇌궁상핵NPY、POMC화LRbmRNA표체；방사면역법측혈청이도소화수소；매화학법검측혈청혈당화혈지。결과：KSCl조적체중、Lee지수、혈수소、혈이도소、혈당、IGR、‘TG화TC여cscl조상비무현저강저（P〉0．05）；CNC1조하구뇌궁상핵POMC화NPYmRNA수평균현저저우CSC1조（Pd0．01），이CNC1조하구뇌궁상핵LRbmRNA수평현저고우CSCl조（P〈0．01）；ESCl조하구뇌궁상핵POMCmRNA현저고우CSCl조（P〈0．01），NPY화U지mRNA수평여CSC1조상비무현저성차이（P〉0．05）。결론：잉기저강도유영운동화포유기과도위양균가대자대대서하구뇌궁상핵POMCmRNA표체산생가소성적영향，단시잉기저강도유영운동대OF대서과도진식유발적비반표형무현저예방효과。
Objective.. To investigate whether the low intensity swimming exercise during preg- nancy could influence the regulation center of appetite and energy in the hypothalamic arcuate nucleus （ARH） of their overfed weanling rats. Methods： Total 80 female SD pregnant rats were enrolled, among which 22 rats began swimming （10 min per day, 6 days per week）from the 3rd day of pregnancy to delivery. The rest rats kept sedentary till delivery. The female pups were distributed randomly and assigned to small litters （4 pups） and normal litters （10 pups） on the second day after birth. After weanling the offspring pups were randomly selected and assigned to three groups according to the body weight., the pregnancy sedentary＋normal little control group（CNC1, n=8）, the pregnancy sedentary＋ postweanling OF control group （CSC1 ,n=8）and the pregnancy swimming ＋ postweanling OF group（ESC1, n=8）. The rat pups brains were removed, and NPY, POMC and LRb rnRNA in ARH were analyzed by in situ hybridization technique. The fasting serum insulin and leptin were assayed by radioimmu- noassay, and the fasting serum glucose and lipids were assayed by enzymatic methods. Results ： The body weight, Lee index, leptin, insulin, glu, IGR, TC and TG in their pups on the day of weanling, relative to Group CSC1, were not significantly affected in Group ESC1. POMC and NPY rnRNA in ARC exhibitions were significantly lower in Group CNC1 than those of Group CSC1 （P〈0. 01）, while LRb mRNA in ARC in Group CNC1 was higher significantly than Group CSC1 （P〉0. 01 ）. There were not significant differences between ESC1 and CSC1 groups in the mRNA levels of NPY and LRb in ARH. （P〉0.05）, however, POMC mRNA in ARH in Group ESC1 was higher than that of Group GSC1 （P〉0.05）. Conclusion.. Both Low-intensity swimming during pregnancy and overfed during lactation have plastic influences in the mRNA expression of POMC in ARH. However low-intensity swimming during pregnan- cy has little significant preventive effect on the weight programming in the overfed rats.