目的:探究电刺激生物反馈对产后盆底功能障碍(pelvic floor dysfunctional disease,PFD)患者盆底肌力、盆底肌电位及基质金属蛋白酶-2(matrix metalloproteinase-2,MMP-2)、基质金属蛋白酶组织抑制因子-2(tissue inhibitor of metallopr...目的:探究电刺激生物反馈对产后盆底功能障碍(pelvic floor dysfunctional disease,PFD)患者盆底肌力、盆底肌电位及基质金属蛋白酶-2(matrix metalloproteinase-2,MMP-2)、基质金属蛋白酶组织抑制因子-2(tissue inhibitor of metalloproteinase-2,TIMP-2)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)水平的影响。方法:选取2019年9月至2020年9月海南省妇女儿童医学中心收治的150例产后PFD患者,随机分为3组,每组各50例。其中A组给予Kegel盆底肌训练,B组给予电刺激生物反馈治疗,C组给予Kegel盆底肌训练联合电刺激生物反馈治疗,时间为3个月。对比3组临床疗效及治疗前后的盆底肌力、盆底肌电位、盆腔器官脱垂(pelvic organ prolapse,POP)-Q分期、性生活质量,并检测盆腔壁组织中MMP-2、TIMP-2、TGF-β1表达水平。结果:C组治疗总有效率为92.00%,高于A组(70.00%)和B组(76.00%),差异有统计学意义(P<0.05)。治疗后,C组盆底手测肌力及I类、II类纤维肌最大电位值均显著高于A组、B组(P<0.05),且B组显著高于A组(P<0.05)。治疗后,C组POP-Q分期等级与A组、B组相比明显降低(P<0.05),B组POP-Q分期等级与A组相比,差异无统计学意义(P>0.05)。治疗后,A组、B组、C组盆腔器官脱垂-尿失禁性功能问卷(Pelvic Organ Prolapse/Incontinence Sexual Function Questionnaire-12,PISQ-12)评分分别为26.34±5.67、28.96±5.31、32.88±5.29,差异有统计学意义(P<0.05)。治疗后,C组MMP-2水平显著低于A组、B组(P<0.05),TIMP-2、TGF-β1水平显著高于A组、B组(P<0.05),且B组各指标变化优于A组(P<0.05)。结论:电刺激生物反馈治疗产后PFD疗效显著,能够增强患者盆底肌力,改善患者性生活质量。展开更多
Background Excessive deposition of extraceUular matrix （ECM） in the kidney is the hallmark of diabetic nephropathy. Increased matrix synthesis has been well documented but the effects of diabetes on degradative path...Background Excessive deposition of extraceUular matrix （ECM） in the kidney is the hallmark of diabetic nephropathy. Increased matrix synthesis has been well documented but the effects of diabetes on degradative pathways, particularly in the in vivo setting. The renal protective effect of these pathways on matrix accumulation has not been fully elucidated. The present study was understaken to investigate the activity of matrix metalloproteinase-2 （MMP-2）, the expression of MMP-2 and tissue inhibitor of metalloproteinase-2 （TIMP-2） in kidney tissues of diabetic rats, and to explore the degradative pathway of type Ⅳ collagen （Ⅳ-C） and the renal protective effects of ACE inhibition- benazepril.展开更多
OBJECTIVE:To study the effect of Lichong decoction(LD) on expression of matrix metalloproteinase-2(MMP-2) and metalloproteinase-2(TIMP-2) in a rat model of uterine leiomyoma(UL).METHODS:UL was induced in rats using ex...OBJECTIVE:To study the effect of Lichong decoction(LD) on expression of matrix metalloproteinase-2(MMP-2) and metalloproteinase-2(TIMP-2) in a rat model of uterine leiomyoma(UL).METHODS:UL was induced in rats using exogenous estrogen and progesterone.LD was administered(p.o.) for 4 weeks,and mifepristone(RU-486)used as a control.To observe the effect of LD on the uterine coefficient and uterine transverse diameter,a radioimmunoassay method was used to detect serum levels of sex hormones.Light microscopic analyses of pathologic changes in the tissues of UL rats were evaluated.Expression of the proteins of matrix metalloproteinases(MMPs) and tissue inhibitors of metalloproteinases(TIMPs) in uterine tissues was assessed by immunohistochemical staining and western blotting.RESULTS:A UL model in rats was established successfully.LD reduced uterine weight,uterine coefficient,and uterine transverse diameter compared with untreated controls.LD reduced levels of estradiol,progesterone,follicle-stimulating hormone,and luteinizing hormone in our UL models.LD improved the pathologic condition of uterine muscle.Expression of MMP-2 protein decreased to varying extents in LD-treated groups,but TIMP-2 levels were enhanced.LD appears to reduce MMP-2 expression and increase TIMP-2 expression in UL tissue.CONCLUSION:These data suggest that the mechanism of action of LD on ULs may involve reduction of MMP-2 expression and increase in TIMP-2 expression in rats.展开更多
The inhibition of metastatic progression of Somatostatin receptor type 2 （SSTR2） gene transfection mediated by adenovirus in human pancreatic carcinoma cells and the mechanisms involved in this effect were studied. ...The inhibition of metastatic progression of Somatostatin receptor type 2 （SSTR2） gene transfection mediated by adenovirus in human pancreatic carcinoma cells and the mechanisms involved in this effect were studied. The full-length human SSTR2 cDNA was introduced into the pancreatic cancer cell line BXPC-3 by adenovirus-mediated transfection. Stable expression of mRNAs and protein of SSTR2 was detected by RT-PCR and Western-blot. The Matrigel-coated Transwell was used to detect the migratory and invasive ability of SSTR2-expressing cells, Adv-GFP control cells and mock control cells. Furthermore, the expression of matrix metalloproteinase-2 （MMP-2） and tissue inhibitor of metalloproteinase-2 （TIMP-2） was detected by RT-PCR in these cells. The stable expression of SSTR2 was detected in BXPC-3 transfected by Adv-GFP-SSTR2. A dramatic decrease of BXPC-3 expressing sst2 cells migrating through a Matrigel-coated filter was observed, as compared with Adv-GFP control and mock control cells （P〈0. 01）. Moreover, the expression of MMP-2 mRNA was significantly reduced in the SSTR2-expressing cells and converse- ly the expression of TIMP-2 mRNA was significantly increased in the SSTR2-expressing cells when compared with the Adv-GFP control and mock control （P〈0. 01）. The expression of reintroduced human SSTR2 gene in BXPC-3 cells by Adv-GFP-SSTR2 had the anti-migratory and anti-invasive effects, and the mechanisms involved in this effect may be due to the down-regulated expression of MMP-2 and up-regulated expression of TIMP-2.展开更多
文摘目的:探究电刺激生物反馈对产后盆底功能障碍(pelvic floor dysfunctional disease,PFD)患者盆底肌力、盆底肌电位及基质金属蛋白酶-2(matrix metalloproteinase-2,MMP-2)、基质金属蛋白酶组织抑制因子-2(tissue inhibitor of metalloproteinase-2,TIMP-2)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)水平的影响。方法:选取2019年9月至2020年9月海南省妇女儿童医学中心收治的150例产后PFD患者,随机分为3组,每组各50例。其中A组给予Kegel盆底肌训练,B组给予电刺激生物反馈治疗,C组给予Kegel盆底肌训练联合电刺激生物反馈治疗,时间为3个月。对比3组临床疗效及治疗前后的盆底肌力、盆底肌电位、盆腔器官脱垂(pelvic organ prolapse,POP)-Q分期、性生活质量,并检测盆腔壁组织中MMP-2、TIMP-2、TGF-β1表达水平。结果:C组治疗总有效率为92.00%,高于A组(70.00%)和B组(76.00%),差异有统计学意义(P<0.05)。治疗后,C组盆底手测肌力及I类、II类纤维肌最大电位值均显著高于A组、B组(P<0.05),且B组显著高于A组(P<0.05)。治疗后,C组POP-Q分期等级与A组、B组相比明显降低(P<0.05),B组POP-Q分期等级与A组相比,差异无统计学意义(P>0.05)。治疗后,A组、B组、C组盆腔器官脱垂-尿失禁性功能问卷(Pelvic Organ Prolapse/Incontinence Sexual Function Questionnaire-12,PISQ-12)评分分别为26.34±5.67、28.96±5.31、32.88±5.29,差异有统计学意义(P<0.05)。治疗后,C组MMP-2水平显著低于A组、B组(P<0.05),TIMP-2、TGF-β1水平显著高于A组、B组(P<0.05),且B组各指标变化优于A组(P<0.05)。结论:电刺激生物反馈治疗产后PFD疗效显著,能够增强患者盆底肌力,改善患者性生活质量。
基金This study was supported by a grant from the Natural Science Foundation of Shandong Province (No. Y2002C35).
文摘Background Excessive deposition of extraceUular matrix （ECM） in the kidney is the hallmark of diabetic nephropathy. Increased matrix synthesis has been well documented but the effects of diabetes on degradative pathways, particularly in the in vivo setting. The renal protective effect of these pathways on matrix accumulation has not been fully elucidated. The present study was understaken to investigate the activity of matrix metalloproteinase-2 （MMP-2）, the expression of MMP-2 and tissue inhibitor of metalloproteinase-2 （TIMP-2） in kidney tissues of diabetic rats, and to explore the degradative pathway of type Ⅳ collagen （Ⅳ-C） and the renal protective effects of ACE inhibition- benazepril.
基金Supported by National Natural Science Fund(Study on the Action Mechanism of Inhibition of Uterine Leiomyoma of Regulation of Lichong Decoction for Ang-Tie-2 Transduction Pathway,No.81373812Research on the Regulating Mechanism of the Inhibitory Effect of Nourishing Healthy Qi and Eliminating Blood Stasis Chinese Medicine on Extracellular Matrix Metabolize in Uterine Leiomyoma,No.81073096)
文摘OBJECTIVE:To study the effect of Lichong decoction(LD) on expression of matrix metalloproteinase-2(MMP-2) and metalloproteinase-2(TIMP-2) in a rat model of uterine leiomyoma(UL).METHODS:UL was induced in rats using exogenous estrogen and progesterone.LD was administered(p.o.) for 4 weeks,and mifepristone(RU-486)used as a control.To observe the effect of LD on the uterine coefficient and uterine transverse diameter,a radioimmunoassay method was used to detect serum levels of sex hormones.Light microscopic analyses of pathologic changes in the tissues of UL rats were evaluated.Expression of the proteins of matrix metalloproteinases(MMPs) and tissue inhibitors of metalloproteinases(TIMPs) in uterine tissues was assessed by immunohistochemical staining and western blotting.RESULTS:A UL model in rats was established successfully.LD reduced uterine weight,uterine coefficient,and uterine transverse diameter compared with untreated controls.LD reduced levels of estradiol,progesterone,follicle-stimulating hormone,and luteinizing hormone in our UL models.LD improved the pathologic condition of uterine muscle.Expression of MMP-2 protein decreased to varying extents in LD-treated groups,but TIMP-2 levels were enhanced.LD appears to reduce MMP-2 expression and increase TIMP-2 expression in UL tissue.CONCLUSION:These data suggest that the mechanism of action of LD on ULs may involve reduction of MMP-2 expression and increase in TIMP-2 expression in rats.
文摘The inhibition of metastatic progression of Somatostatin receptor type 2 （SSTR2） gene transfection mediated by adenovirus in human pancreatic carcinoma cells and the mechanisms involved in this effect were studied. The full-length human SSTR2 cDNA was introduced into the pancreatic cancer cell line BXPC-3 by adenovirus-mediated transfection. Stable expression of mRNAs and protein of SSTR2 was detected by RT-PCR and Western-blot. The Matrigel-coated Transwell was used to detect the migratory and invasive ability of SSTR2-expressing cells, Adv-GFP control cells and mock control cells. Furthermore, the expression of matrix metalloproteinase-2 （MMP-2） and tissue inhibitor of metalloproteinase-2 （TIMP-2） was detected by RT-PCR in these cells. The stable expression of SSTR2 was detected in BXPC-3 transfected by Adv-GFP-SSTR2. A dramatic decrease of BXPC-3 expressing sst2 cells migrating through a Matrigel-coated filter was observed, as compared with Adv-GFP control and mock control cells （P〈0. 01）. Moreover, the expression of MMP-2 mRNA was significantly reduced in the SSTR2-expressing cells and converse- ly the expression of TIMP-2 mRNA was significantly increased in the SSTR2-expressing cells when compared with the Adv-GFP control and mock control （P〈0. 01）. The expression of reintroduced human SSTR2 gene in BXPC-3 cells by Adv-GFP-SSTR2 had the anti-migratory and anti-invasive effects, and the mechanisms involved in this effect may be due to the down-regulated expression of MMP-2 and up-regulated expression of TIMP-2.
