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1.重庆医科大学附属康复医院,重庆 400050
2.重庆医科大学附属第一医院,重庆 400016
3.重庆医科大学体育医学学院,重庆 401331
何龙林,Email:1443968558@qq.com,研究方向:运动与高血压肾病。
常 青,Email:651733149@qq.com。
收稿:2023-10-23,
修回:2023-12-04,
录用:2023-12-19,
纸质出版:2024-07-28
移动端阅览
何龙林,曹书源,汪洋,等.不同强度有氧运动对自发性高血压大鼠肾脏影响的研究[J].重庆医科大学学报,2024,49(7):830-837.
He Longlin,Cao Shuyuan,Wang Yang,et al.Effects of different intensities of aerobic exercise on the kidney of spontaneously hypertensive rats[J].Journal of Chongqing Medical University,2024,49(7):830-837.
何龙林,曹书源,汪洋,等.不同强度有氧运动对自发性高血压大鼠肾脏影响的研究[J].重庆医科大学学报,2024,49(7):830-837. DOI: 10.13406/j.cnki.cyxb.003546.
He Longlin,Cao Shuyuan,Wang Yang,et al.Effects of different intensities of aerobic exercise on the kidney of spontaneously hypertensive rats[J].Journal of Chongqing Medical University,2024,49(7):830-837. DOI: 10.13406/j.cnki.cyxb.003546.
目的
2
研究有氧运动对自发性高血压大鼠(spontaneously hypertensive rats,SHR)肾脏内细胞焦亡相关蛋白表达的影响,探讨有氧运动对自发性高血压大鼠肾损害的作用。
方法
2
8周龄雄性SHR和Wistar京都大鼠(wistar-kyoto rat,WKY),随机分为4组(
n
=6):安静组(WKY)、高血压安静组(SHR-N)、低强度有氧运动组(SHR-L)、中强度有氧运动组(SHR-M)。SHR-L组和SHR-M组分别在0°坡度的运动跑步机上以12~14 m/min和18~20 m/min进行有氧运动,每周5次,每次60 min,WKY和SHR-N安静饲养。10周后,训练结束72 h后检测血压。检测血清肌酐(creatinine,Cr)、尿素氮(urea nitrogen,BUN)。Masson染色观测肾脏病理学改变,并将肾脏功能指标(index of renal function,RFI)作为肾功能损伤指标。测定大鼠肾组织中核苷酸结合寡聚化结构域样受体蛋白3(NOD-like receptor thermal protein domain associated protein 3,NLRP3)、含半胱
氨酸的天冬氨酸蛋白水解酶1(cysteinyl aspartate specific proteinase,Caspase-1)、cleaved-Caspase-1、Toll样受体4(Toll Like Receptor 4,TLR4)、IL-1β、IL-18、Gasdermin D、GSDMDC1等蛋白表达。检测血清中IL-1β和IL-18表达。
结果
2
与WKY相比,SHR-N血压、血清Cr、BUN含量、RFI比值、NLRP3、Caspase-1、TLR4、IL-1β、IL-18、GSDMD、GSDMDC1蛋白、血清中IL-1β和IL-18表达升高;与SHR-N相比,SHR-M血压、血清Cr、BUN含量、RFI比值以及NLRP3、Caspase-1、TLR4、IL-1β、IL-18、GSDMD、GSDMDC1蛋白表达下降明显,而SHR-L组下降趋势不明显。
结论
2
有氧运动强度差异与自发性高血压大鼠肾脏NLRP3炎症小体表达、血压以及肾功能损害均具有统计学意义。与低强度有氧运动相比,中强度有氧运动通过TLR4/NLRP3信号通路改善自发性高血压大鼠肾功能损害更明显。
Objective
2
To study the effects of aerobic exercise on the expression of pyroptosis-related proteins in the kidney of spontaneously hypertensive rats(SHRs),and to explore the effects of aerobic exercise for hypertensive renal damage in SHRs.
Methods
2
Eight-week-old male SHRs and Wistar Kyoto rats(WKYs) were randomly divided into four groups(
n
=6 in each group): control group(WKY),non-exercise hypertension group(SHR-N),low-intensity aerobic exercise hypertension group(SHR-L),and moderate-intensity aerobic exercise hypertension group(SHR-M). The rats in the SHR-L and SHR-M groups were subjected to running on a sports treadmill at a slope of 0° at 12-14 m/min and 18-20 m/min for 60 min,respectively,for 5 times per week. The WKY and SHR-N groups had no exercise intervention. After 10 weeks,72 hours after exercise,we measured the blood pressure of rats;measured serum creatinine(Cr),urea nitrogen(BUN),interleukin(IL)-1β,and IL-18;observed the pathological changes in the kidney with Masson staining,and calculated the renal function index(RFI) to reflect the severity of renal function impairment;and measured the protein expression of nucleotide-binding oligomerization domain-like receptor protein 3(NLRP3),cysteinyl aspartate-specific proteinase 1(caspase-1),cleaved caspase-1,toll-like receptor 4(TLR4),IL-1β,IL-18,gasdermin D(GSDMD),and G
SDMDC1 in the renal tissue of rats.
Results
2
Compared with the WKY group,the SHR-N group showed significant increases in blood pressure,serum Cr,BUN,IL-1β,and IL-18 levels,and RFI,as well as the expression of NLRP3,caspase-1,TLR4,IL-1β,IL-18,GSDMD,and GSDMDC1 in the kidney. Compared with the SHR-N group,the SHR-M group showed significantly decreased blood pressure,serum Cr and BUN,and RFI,as well as NLRP3,caspase-1,TLR4,IL-1β,IL-18,GSDMD,and GSDMDC1,while the SHR-L group had no significant reductions.
Conclusion
2
Different intensities of aerobic exercise produce varying degrees of effects on renal NLRP3 inflammasome expression,blood pressure,and renal function in SHRs. Moderate-intensity aerobic exercise is superior to low-intensity aerobic exercise in improving renal function in SHRs through the TLR4/NLRP3 signaling pathway.
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