期刊文献+

钠、钾干预对Dahl盐敏感大鼠肾髓质TGF-β1表达及纤维化的影响 被引量:3

Effects of dietary salt and potassium intervention on TGF-β1 expression and fibrosis in renal medulla of Dahl salt-sensitive rats
下载PDF
导出
摘要 目的观察高盐摄入及补钾对Dahl盐敏感大鼠血压、肾髓质转化生长因子-β1(TGF-β1)及纤维化水平的影响,探讨TGF-β1在盐敏感高血压形成及靶器官损害中的作用。方法 6周龄雄性Dahl盐敏感大鼠(n=24)及SS-13BN大鼠(n=24)各3组,分别给予含4g/kg NaCl(低盐组)、80g/kg NaCl(高盐组)及80g/kg NaCl+80g/kg KCl(高盐补钾组)饮食干预4周。于干预前后测量大鼠尾动脉压。采用RT-PCR和免疫组化法测定肾髓质TGF-β1的表达,并用Masson染色观察肾髓质区的纤维化。结果经4周干预,Dahl盐敏感大鼠高盐组血压较低盐组明显升高[(169.9±2.2)mmHg vs.(147.1±6.1)mmHg,P<0.01],高盐补钾组较高盐组血压明显下降[(123.6±3.8)mmHg vs.(169.9±2.2)mmHg,P<0.01]。SS-13BN大鼠高盐组较低盐组血压升高[(145.6±1.9)mmHg vs.(140.2±3.7)mmHg,P<0.05],高盐补钾组较高盐组血压下降[(125.2±2.8)mmHg vs.(145.6±1.9)mmHg,P<0.01]。Dahl盐敏感大鼠高盐组TGF-β1mRNA及蛋白表达量较低盐组明显升高(0.87±0.02 vs.0.67±0.04,P<0.01;0.136±0.002 vs.0.030±0.002,P<0.01),高盐补钾组TGF-β1mRNA及蛋白表达量较高盐组明显减少(0.55±0.04 vs.0.87±0.02,P<0.01;0.070±0.008 vs.0.136±0.002,P<0.01)。Dahl盐敏感大鼠肾小管区胶原沉积高盐组多于低盐组(0.075±0.002 vs.0.037±0.002,P<0.01),高盐补钾组则较高盐组减少(0.038±0.008 vs.0.075±0.002,P<0.01)。结论高盐可使Dahl盐敏感大鼠血压明显升高,肾髓质区TGF-β1表达明显增加及纤维化。补钾对高盐引起的血压升高及靶器官损害有保护作用。 Objective To investigate the effects of high sodium and supplementary potassium intake on blood pressure, transforming growth factor (TGF-β1) expression and fibrosis of renal medulla of Dahl salt-sensitive rats so as to explore the effects of TGF-β1 on the occurrence of salt-sensitive hypertension and target organ damage. Methods We divided 24 six-week-old male Dahl salt-sensitive rats and 24 SS-13BN rats randomly into low salt group, high salt group, and high salt plus high potassium group, which were given 4 g/kg NaC1, 80/kg NaC1 and 80 g/kg NaC1 + 80 g/kg KC1 diets, respectively, for four weeks. Their tail blood pressure was measured before and after the diet intervention. TGF-β1 expression in renal medulla was assessed by reverse transcription-PCR and immunohistochemical staining; the development of fibrosis in renal medulla was observed through Masson staining. Results After 4 weeks' diet intervention, in Dahl salt-sensitive rats, blood pressure increased significantly in high salt group compared with that in low salt group E (169.9± 2.2)mmHg vs. (147.1±6.1)mmHg, P〈0.01], that of the high salt plus potassium group was evidently decreased compared with that of high salt group (123.6~ 3.8 mmHg vs. 169.9--+2.2 mmHg, P〈0.01). In SS-13BN rats, blood pressure increased in high salt group compared with that in low salt group E(145.6±1.9)mmHg vs. (140.2±3.7)mmHg, P%0.05]3 that of high salt plus potassium group was decreased compared with that of high salt group (125.2± 2.8) mmHg vs. ( 145.6 ± 1.9) mmHg, P〈 0.01]. The mRNA and protein expressions of TGF-I?I in renal medulla of high salt group increased significantly compared with those of low salt group among Dahl salt-sensitive rats (0.87±0.02 vs. O. 67~0.04, P〈0.01; 0. 136±0. 002 vs. 0. 030±0. 002, P〈0.01), and that of high salt plus potassium group decreased significantly compared with that of high salt group (0.55±0.04 vs. 0.87±0.02, P〈0.01; 0.070±0.008 vs. 0.136±0.002, P^0.01). In Dahl salt-sensitive rats, there was more collagen deposition in renal tubular area in high salt group than in low salt group (0. 075±0. 002 vs. 0. 037±0. 002, P^0.01). and that of the high salt plus potassium group decreased significantly compared with that of high salt group (0. 038-+0. 008 vs. O. 075---+-_0. 002, P%0.01). Conclusion High-salt diet can cause significant rise in blood pressure and TGF-t31 expression, and lead to fibrosis of renal medulla in Dahl salt- sensitive rats. Supplementation of potassium can alleviate blood pressure increase caused by high-salt diet and protect the target organs.
出处 《西安交通大学学报(医学版)》 CAS CSCD 北大核心 2014年第2期157-162,共6页 Journal of Xi’an Jiaotong University(Medical Sciences)
基金 国家重点基础研究发展计划"973"项目(No.2012CB517804) 国家自然科学基金资助项目(No.30671160 81070218)~~
关键词 盐敏感性 肾髓质 转化生长因子-β1 高血压 纤维化 sodium potassium salt sensitivity~ renal medulla transforming growth factor-β1 hypertension fibrosis
  • 相关文献

参考文献18

  • 1王文,顾东风.陈伟伟.盐与高血压[M].北京:卫生部疾病预防控制局,2009.
  • 2ZHOU XJ, RAKHEJA D, YU X, et al. The aging kidney[J] Kid Inter, 2008, 74(6):710-720.
  • 3MU J J, LIU ZQ, LIU FQ, et al. Family based randomized tri- al to detect effects on blood pressure of a salt substitute contai- ning potassium and calcium in hypertensive adolescents[J]. AMJ Hypertens, 2009, 22(9) :943-947.
  • 4YU H, BURRELL LM, BLACK MJ, et al. Salt induces myo- cardial and renal fibrosis in normotensive and hypertensive rats [J]. Circulation, 1998, 98(23):2621-2628.
  • 5THIERY JP, ACLOQUE H, HUANG RYJ, et al. Epithelial- mesenchymal transitions in development and disease[J]. Cell, 2009, 139(5) :871-890.
  • 6KALLURI R, WEINBERG RA. The basics of epithelial-mes- enchymal transition[J]. J Clin Invest, 2009, 119(6):1420.
  • 7AUGUST P, SUTHANTHIRAN M. Transforming growth fac- tor beta and progression of renal disease[J]. Kid Inter, 2003, 11 (87) : $99-$104.
  • 8KAGAMI S, BORDER WA, MILLER DE, et al. Angiotensin II stimulates extracellular matrix protein synthesis through in- duction of transforming growth factor-beta expression in ratglomerular mesangial cells[J]. J Clin Invest, 1994, 93 (6) 2431.
  • 9姚颐(综述),张杰(审校).肾间质纤维化相关信号转导通路的研究进展[J].国际泌尿系统杂志,2007,27(6):831-835. 被引量:8
  • 10DAHLY AJ, HOAGLAND KM, FLASCH AK, et al. Antihy- pertensive effects of chronic anti-TGF-13 antibody therapy in Dahl S rats[J]. Am J Physiol Regul Integr Comp Physiol, 2002, 283(3) :R757-R767.

二级参考文献31

  • 1王延叶,李荣山.TGF-β1/Smad与肾脏间质纤维化[J].国外医学(泌尿系统分册),2005,25(6):840-844. 被引量:12
  • 2黄彬,姜傥.肾纤维化中上皮间充质转化的最新研究进展[J].国际检验医学杂志,2006,27(3):264-266. 被引量:17
  • 3Mauviel A. Transforming growth factor beta : a key mediator of fibrosis. Methods Med, 2005, 11 (7) : 69 - 80.
  • 4Wrana J L, Attisano L. Smad pathway. Cytokine Growth Factor Rev, 2000, 11(1 -2) : 5 -13.
  • 5He J, Tegen SB, Krawitz AR, et al. The Transforming activity of Ski and SnoN is dependent on their ability to repress the activity of Smad proteins. J Bid Chem, 2003, 278 (33): 30540- 30547.
  • 6Phanish MK, Wahab NA, Colville - Nash P, et al. The differential role of Smad2 and Smad3 in the regulation of pro - fibrotic TGFβ1 responses in human proximal- tubule epithelial cells. Biochem. J. 2006, 393(Pt2) : 601 -607.
  • 7Lan HY. Tubular epithelial - myofibroblast transdiferentiation mechanisms in proximal tubule cells. Curt Opin Nephrol Hypertens, 2003, 12(1) : 25 -29.
  • 8Sarkar S, Vellaichamy E, Young D, et al. Influence of cytokines and growth factors in ANG Ⅱ - mediated collagen upregulation by fibroblasts in rats: role of myocytes. Am J Physiol, 2004, 287( 1 ) : H107 -117.
  • 9Wang W, Koka V, Lan HY. Transforming Growth factor - beta and Smad signaling in kidney diseases. Nephrology( Catlton), 2005, 10 (1): 48 -56.
  • 10Flanders KC. Smad3 as a mediator of the fibrotie response. Int J Exp Pathol, 2004, 85(2) : 47 -64.

共引文献7

同被引文献36

  • 1Street JM,Souza AC,Alvarez-Prats A,et al.Automated quantification of renal fibrosis with Sirius Red and polarization contrast microscopy.Physiol Rep,2014;2(7):12088.
  • 2Kanbay M, Chen Y, Solak Y, et al. Mechanisms and conse- quences of salt sensitivity and dietary salt intake[J]. Curr Opin Nephrol l-lypertens,201J ,20( I ) :37-13.
  • 3Franeo V. Oparil S. Salt sensitivity, a determinant of blood pres- sure. cardiovascular disease and survival[J]. J Am Coil Nutr, '2006,25(3 Suppl):S247-255.
  • 4Inoue T, Umezawa A, Takenaka T, et al, The contribution of epithelial-mesenchymal transition to renal fibrosis differs among kidney disease rnodels[J] Kidney Int, 2015,87( 1 ) : 233-238.
  • 5Boonla G, Krieglstein K, Bovornpadungkitti S, et al. Fibrosis and evidence for epithelial-mesenehymal transition in the kidneys of patients with staghorn calculi[J] BJU Int, 2011,108(8) : 1336- 1 315.
  • 6Tian Z, Greene AS, Usa K, et al. Renal regional proteomes in young Dahl salt-sensitive rats EJ 1. Hypertension, 2008, 51 (4) : 899-904.
  • 7Moriyama T, Kawada N, Nagatoya K, et al. Fluvastatin sup- presses oxidative stress and fibrosis in the interstitium of mouse kidneys with unilateral ureteral obstruetion[J]. Kidney Int,2001, 59(6) :2095-2103.
  • 8Campese VM. Parise M, Karubian F, et al. Abnormal renal he modynamies in black salt-sensitive patients with hypertension[J]. Hypertension,1991,18(6) :805-812.
  • 9Pletinek A, Consoli C, Van Landsehoot M, et al. Salt intake in- duces epithelial-to-mesenehymal transition of the peritoneal mem- brane in rats[J]. Nephrol Dial Transplant, 2010, 25 (5) : 1688- 1696.
  • 10I,amouille S, Xu J, Derynek R. Molecular mechanisms of epitbe lial-mesenehymal transition[J]. Nat Rev Mol C'ell Biol, 2011. 15 (3) : 178-196.

引证文献3

二级引证文献20

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部