目的探讨促肾上腺皮质激素释放因子受体1(CRHR1)基因rs4458044位点多态性与新生儿持续性肺动脉高压(PPHN)的相关性.方法采用引物入侵分析技术检测2012年3月至2018年3月济宁医学院附属医院收治的临床确诊为PPHN的85例患儿和50例健康照组...目的探讨促肾上腺皮质激素释放因子受体1(CRHR1)基因rs4458044位点多态性与新生儿持续性肺动脉高压(PPHN)的相关性.方法采用引物入侵分析技术检测2012年3月至2018年3月济宁医学院附属医院收治的临床确诊为PPHN的85例患儿和50例健康照组的血液样本的基因多态性,对2组研究对象的一般临床资料、临床指标和CRHR1基因(rs4458044)多态性采用t检验和x2检验进行统计分析.结果PPHN组和健康对照组在性别、胎龄、出生体质量和1 min Apgar评分上差异均无统计学意义(均P>0.05),而在辅助通气时间和最高氧合指数上差异均有统计学意义(均P<0.05).CRHR1基因(rs4458044)GG、CG和CC基因型在PPHN组和健康对照组的频率分别为2.35%、43.53%、54.12%和50.00%、38.00%、12.00%,CG/CC基因型在PPHN组的频率显著高于健康对照组(P<0.05),CG/CC基因型患儿出现PPHN的风险度高于GG基因型,以GG基因型为参照(CG基因型,OR=24.34,95%CI:5.20~113.87,P=0.00;CC基因型,OR=95.83,95%CI:17.99~510.49,P=0.00),携带C等位基因的新生儿辅助通气时间和最高氧合指数显著高于未携带C等位基因的新生儿(P<0.05).结论CRHR1基因(rs4458044)多态性与PPHN相关.展开更多
AIM： To investigate the effect and mechanism of electro-acupuncture lEA） at ST25 and ST37 on irritable bowel syndrome （IBS） of rats. METHODS： A total of 21 male Sprague-Dawley rats were randomly divided into norm...AIM： To investigate the effect and mechanism of electro-acupuncture lEA） at ST25 and ST37 on irritable bowel syndrome （IBS） of rats. METHODS： A total of 21 male Sprague-Dawley rats were randomly divided into normal group, model group and EA group. A rat model of IBS was established by constraining the limbs and distending the colorectum of rats. Rats in EA group received bilateral EA at ST25 and ST37 with a sparse and intense waveform at a frequency of 2/50 Hz for 15 min, once a day for 7 d as a course. Rats in normal and model groups were stimulated by distending colorectum （CR）. An abdominal withdrawal reflex （AWR） scoring system was used to evaluate improvements in visceral hypersensitivity. Toluidine blue-improved method, immunohistochemistry and radioimmunoassay were used to observe mucosal mast cells （MC）, changes of substance P （SP） and substance P receptor （SPR） in colon and change of corticotropin-releasing hormone （CRH） in hypothalamus. RESULTS： The threshold of visceral sense was significantly lower in model group than in normal group,and significantly higher in EA group than in model group. The number of mucosal MC was greater in model group than in normal group and significantly smaller in EA group than in model group. The CRH level in hypothalamus of rats was significantly higher in model group than in normal group, which was remarkably decreased after electro-acupuncture treatment. The SP and SPR expression in colon of rats in model group was decreased after electro-acupuncture treatment. CONCLUSION： EA at ST25 and ST37 can decrease the number of mucosal MC and down-regulate the expression of CRH in hypothalamus, and the expression of SP and SPR in colon of rats with IBS.展开更多
AIM To explore the significance of corticotropin-releasing hormone(CRH)-receptor(R)2 in mucosal healing of dextran sulfate sodium(DSS)-induced colitis and the effect of Tong-Xie-Yao-Fang(TXYF) on CRH-R2 expression and...AIM To explore the significance of corticotropin-releasing hormone(CRH)-receptor(R)2 in mucosal healing of dextran sulfate sodium(DSS)-induced colitis and the effect of Tong-Xie-Yao-Fang(TXYF) on CRH-R2 expression and regulation.METHODS Ulcerative colitis was induced in mice by administration of 3%(w/v) DSS for 7 d. Once the model was established,mice were administered urocortin-2(30 μg/kg), a peptide which binds exclusively to CRH-R2, or various doses of aqueous TXYF extracts(2.8-11.2 g/kg), a CRH-R2 antagonist Astressin(Ast)2B(20 μg/kg), Ast2B + Ucn2, or Ast2B with various doses of aqueous TXYF extracts for 9 d. Colonic mucosal permeability was then evaluated by measuring the fluorescence intensity in serum. The colitis disease activity index(DAI), histology, body weight loss and colon length were assessed to evaluate the condition of colitis. Terminal deoxynucleotidyl transferase d UTP nick-end labeling was used to detect apoptosis of the intestinal epithelial cells. The expression level of Ki-67 represented the proliferation of colonic epithelial cells and was detected by immunohistochemistry. The expression levels of inflammation cytokines IL-6, TNF-α and CXCL-1 were examined in colon tissues using real-time PCR and ELISA kits.RESULTS Compared with the DSS group, mice treated with the CRH-R2 antagonist Ast2B showed greater loss of body weight, shorter colon lengths(4.90 ± 0.32 vs 6.21 ± 0.34 cm, P < 0.05), and higher DAI(3.61 ± 0.53 vs 2.42 ± 0.32, P < 0.05) and histological scores(11.50 ± 1.05 vs 8.33 ± 1.03, P < 0.05). Additionally, the Ast2B group showed increased intestinal permeability(2.76 ± 0.11 μg/mL vs 1.47 ± 0.11 μg/mL, P < 0.001), improved secretion of inflammatory cytokines in colon tissue, and reduced colonic epithelial cell proliferation(4.97 ± 4.25 vs 22.51 ± 8.22, P < 0.05). Increased apoptosis(1422.39 ± 90.71 vs 983.01 ± 98.17, P < 0.001) was also demonstrated. The Ucn2 group demonstrated lower DAI(0.87 ± 0.55 vs 2.42 ± 0.32, P < 0.001) and histological scores(4.33 ± 1.50展开更多
文摘目的探讨促肾上腺皮质激素释放因子受体1(CRHR1)基因rs4458044位点多态性与新生儿持续性肺动脉高压(PPHN)的相关性.方法采用引物入侵分析技术检测2012年3月至2018年3月济宁医学院附属医院收治的临床确诊为PPHN的85例患儿和50例健康照组的血液样本的基因多态性,对2组研究对象的一般临床资料、临床指标和CRHR1基因(rs4458044)多态性采用t检验和x2检验进行统计分析.结果PPHN组和健康对照组在性别、胎龄、出生体质量和1 min Apgar评分上差异均无统计学意义(均P>0.05),而在辅助通气时间和最高氧合指数上差异均有统计学意义(均P<0.05).CRHR1基因(rs4458044)GG、CG和CC基因型在PPHN组和健康对照组的频率分别为2.35%、43.53%、54.12%和50.00%、38.00%、12.00%,CG/CC基因型在PPHN组的频率显著高于健康对照组(P<0.05),CG/CC基因型患儿出现PPHN的风险度高于GG基因型,以GG基因型为参照(CG基因型,OR=24.34,95%CI:5.20~113.87,P=0.00;CC基因型,OR=95.83,95%CI:17.99~510.49,P=0.00),携带C等位基因的新生儿辅助通气时间和最高氧合指数显著高于未携带C等位基因的新生儿(P<0.05).结论CRHR1基因(rs4458044)多态性与PPHN相关.
基金Supported by Open Fund of Key Laboratory of Acupuncture Combined with Medication (Nanjing University of TCM), Ministry of Education, No. KJA200809Shanghai Rising-Star Program, No. 08QA14064Shanghai Leading Academic Discipline Project, No. S30304
文摘AIM： To investigate the effect and mechanism of electro-acupuncture lEA） at ST25 and ST37 on irritable bowel syndrome （IBS） of rats. METHODS： A total of 21 male Sprague-Dawley rats were randomly divided into normal group, model group and EA group. A rat model of IBS was established by constraining the limbs and distending the colorectum of rats. Rats in EA group received bilateral EA at ST25 and ST37 with a sparse and intense waveform at a frequency of 2/50 Hz for 15 min, once a day for 7 d as a course. Rats in normal and model groups were stimulated by distending colorectum （CR）. An abdominal withdrawal reflex （AWR） scoring system was used to evaluate improvements in visceral hypersensitivity. Toluidine blue-improved method, immunohistochemistry and radioimmunoassay were used to observe mucosal mast cells （MC）, changes of substance P （SP） and substance P receptor （SPR） in colon and change of corticotropin-releasing hormone （CRH） in hypothalamus. RESULTS： The threshold of visceral sense was significantly lower in model group than in normal group,and significantly higher in EA group than in model group. The number of mucosal MC was greater in model group than in normal group and significantly smaller in EA group than in model group. The CRH level in hypothalamus of rats was significantly higher in model group than in normal group, which was remarkably decreased after electro-acupuncture treatment. The SP and SPR expression in colon of rats in model group was decreased after electro-acupuncture treatment. CONCLUSION： EA at ST25 and ST37 can decrease the number of mucosal MC and down-regulate the expression of CRH in hypothalamus, and the expression of SP and SPR in colon of rats with IBS.
基金Supported by National Natural Science Foundation of China,No.81473506Natural Science Foundation of Zhejiang Province,No.LY13H030011 and No.LY17H290009+2 种基金State Administration of Traditional Chinese Medicine of Zhejiang Province,No.2013ZB050Department of Zhejiang Province to Build Funded Project,No.WKJ-ZJ-1531Zhejiang TCM Science and Technology Project,No.2016ZB047,No.2017ZA056 and No.2018ZB046
文摘AIM To explore the significance of corticotropin-releasing hormone(CRH)-receptor(R)2 in mucosal healing of dextran sulfate sodium(DSS)-induced colitis and the effect of Tong-Xie-Yao-Fang(TXYF) on CRH-R2 expression and regulation.METHODS Ulcerative colitis was induced in mice by administration of 3%(w/v) DSS for 7 d. Once the model was established,mice were administered urocortin-2(30 μg/kg), a peptide which binds exclusively to CRH-R2, or various doses of aqueous TXYF extracts(2.8-11.2 g/kg), a CRH-R2 antagonist Astressin(Ast)2B(20 μg/kg), Ast2B + Ucn2, or Ast2B with various doses of aqueous TXYF extracts for 9 d. Colonic mucosal permeability was then evaluated by measuring the fluorescence intensity in serum. The colitis disease activity index(DAI), histology, body weight loss and colon length were assessed to evaluate the condition of colitis. Terminal deoxynucleotidyl transferase d UTP nick-end labeling was used to detect apoptosis of the intestinal epithelial cells. The expression level of Ki-67 represented the proliferation of colonic epithelial cells and was detected by immunohistochemistry. The expression levels of inflammation cytokines IL-6, TNF-α and CXCL-1 were examined in colon tissues using real-time PCR and ELISA kits.RESULTS Compared with the DSS group, mice treated with the CRH-R2 antagonist Ast2B showed greater loss of body weight, shorter colon lengths(4.90 ± 0.32 vs 6.21 ± 0.34 cm, P < 0.05), and higher DAI(3.61 ± 0.53 vs 2.42 ± 0.32, P < 0.05) and histological scores(11.50 ± 1.05 vs 8.33 ± 1.03, P < 0.05). Additionally, the Ast2B group showed increased intestinal permeability(2.76 ± 0.11 μg/mL vs 1.47 ± 0.11 μg/mL, P < 0.001), improved secretion of inflammatory cytokines in colon tissue, and reduced colonic epithelial cell proliferation(4.97 ± 4.25 vs 22.51 ± 8.22, P < 0.05). Increased apoptosis(1422.39 ± 90.71 vs 983.01 ± 98.17, P < 0.001) was also demonstrated. The Ucn2 group demonstrated lower DAI(0.87 ± 0.55 vs 2.42 ± 0.32, P < 0.001) and histological scores(4.33 ± 1.50
