目的检测哮喘小鼠与对照小鼠肺组织中Th1、Th2、Th17及Foxp3+Treg细胞占CD4+T细胞百分比,探讨哮喘小鼠中Foxp3+Treg/Th17比值变化及其在哮喘中的意义。方法将6周清洁级Balb/c小鼠随机分为对照组(control)和哮喘组(OVA),哮喘组给予OVA致...目的检测哮喘小鼠与对照小鼠肺组织中Th1、Th2、Th17及Foxp3+Treg细胞占CD4+T细胞百分比,探讨哮喘小鼠中Foxp3+Treg/Th17比值变化及其在哮喘中的意义。方法将6周清洁级Balb/c小鼠随机分为对照组(control)和哮喘组(OVA),哮喘组给予OVA致敏和激发,建立哮喘小鼠模型,对照组用PBS代替OVA。最后1次激发后24 h内检测支气管肺泡灌洗液(BALF)中细胞总数及细胞分类计数;HE染色制作肺组织病理切片,光镜下观察病理变化;小鼠肺功能仪检测小鼠气道高反应性;流式细胞术检测小鼠肺组织中Th1、Th2、Th17、Foxp3+Treg细胞占CD4+T细胞百分比。结果哮喘组BALF细胞总数、淋巴细胞、嗜酸性粒细胞及中性粒细胞比例显著高于对照组,肺部炎症反应与气道高反应显著高于对照组。哮喘组小鼠肺组织中Th2、Th17细胞百分比明显高于对照组[分别为(0.83±0.08)%vs(0.50±0.03)%;(1.74±0.17)%vs(1.07±0.07)%,P<0.01];而Th1、Foxp3+Treg细胞百分比显著低于对照组[分别为(1.39±0.14)%vs(2.56±0.18)%;(4.87±0.35)%vs(7.67±0.44)%,P<0.001];哮喘组Th1/Th2及Foxp3+Treg/Th17明显低于对照组(分别为1.66±0.17 vs 5.19±0.56;3.02±0.49 vs 7.38±0.71,P<0.001)。结论除Th1/Th2失衡外,Foxp3+Treg/Th17失衡在哮喘发病中亦有重要作用。展开更多
Thyroid hormone is a kind of important hormone which regulates metamorphosis. Its role is well described in amphibian metamorphosis. Thyroid hormones (T3 and T4) have also been demonstrated to play a role in metamorph...Thyroid hormone is a kind of important hormone which regulates metamorphosis. Its role is well described in amphibian metamorphosis. Thyroid hormones (T3 and T4) have also been demonstrated to play a role in metamorphosis of marine invertebrates. However, the mechanism of thyroid hormone in metamorphosis of marine invertebrates remains unknown. A homolog of vertebrate thyroid hormone receptor (TR) was cloned and identified in abalone Haliotis diversicolor and was named HdTR . The mRNA expressions of HdTR , thyroid peroxidase ( TPO ), thyroid peroxidase 1 ( TPO1 ), idothyronine deiodinase Ⅲ( IDⅢ) and integrin alpha-V ( ITGAV ) had significant diff erence in metamorphosis of H . diversicolor . Metamorphosis rate and mortality rate were significantly diff erent in HdTR RNAi experiment and T3 inducing experiment. In RNAi experiment, ITGAV and CCND1 (cyclin D1) expression of dsRNA HdTR exposing group were significantly lower than those of blank control and negative control. But CTNNB (catenin beta) expression of dsRNA HdTR exposing group was higher than that those of blank control and negative control. ERK (extracellular signal regulated kinases) and PI3K (phosphoinositide-3-kinase) had no significant diff erence in RNAi experiment. Moreover, ITGAV of 1 μmol/L T3 group was significantly lower than that of 0 μmol/L T3 group, PI3K expression of 10 μmol/L T3 group was higher than that of 0 μmol/L T3 group, and the other genes expression had no significant diff erence in T3 inducing experiment. The data of genes expression suggested that CCND1 might be an eff ector gene of TR genomic action, while CTNNB might be regulated by unliganded TR. CCND1 and CTNNB may be involved in cell proliferation of metamorphosis. T3 might regulate the expression level of PI3K via nongenomic way. These results shed light on the mechanism of thyroid hormone in abalone metamorphosis.展开更多
The BMPPT (4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione)was synthesized from BMPP. Its m.p. is 106-108℃. The results of the element analysis are as follows: C, 68.51%, H, 4.51%, N, 9.26%, S, 11.47%, wh...The BMPPT (4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione)was synthesized from BMPP. Its m.p. is 106-108℃. The results of the element analysis are as follows: C, 68.51%, H, 4.51%, N, 9.26%, S, 11.47%, which are in conformity with the theoretical value (C, 69.15%, H, 4.76%, N, 9.52%, S, 10.90%). The solvent extraction of Th4+ from nitric acid solution by BMPPT in benzene was studied. The extraction ability of BMPPT is not so high as that of its parent (BMPP). The Th4+ distribution ratio (DTh) increases with the increasing pH of the aqueous phase, and pH1/2 for Th4+ was 3.2 ([BMPPT]=0.10 mol/L). When the pH increases, the distribution ratio of Th4+ increases linearly with the slope of 1 .59. When the concentration of BMPPT increases, the distribution ratio of Th4+ increases rapidly. The lgDTh-lg[BMPPT] is linear with the slope of 1.42 and the extraction mechanism is the cation ion-exchange.展开更多
文摘目的检测哮喘小鼠与对照小鼠肺组织中Th1、Th2、Th17及Foxp3+Treg细胞占CD4+T细胞百分比,探讨哮喘小鼠中Foxp3+Treg/Th17比值变化及其在哮喘中的意义。方法将6周清洁级Balb/c小鼠随机分为对照组(control)和哮喘组(OVA),哮喘组给予OVA致敏和激发,建立哮喘小鼠模型,对照组用PBS代替OVA。最后1次激发后24 h内检测支气管肺泡灌洗液(BALF)中细胞总数及细胞分类计数;HE染色制作肺组织病理切片,光镜下观察病理变化;小鼠肺功能仪检测小鼠气道高反应性;流式细胞术检测小鼠肺组织中Th1、Th2、Th17、Foxp3+Treg细胞占CD4+T细胞百分比。结果哮喘组BALF细胞总数、淋巴细胞、嗜酸性粒细胞及中性粒细胞比例显著高于对照组,肺部炎症反应与气道高反应显著高于对照组。哮喘组小鼠肺组织中Th2、Th17细胞百分比明显高于对照组[分别为(0.83±0.08)%vs(0.50±0.03)%;(1.74±0.17)%vs(1.07±0.07)%,P<0.01];而Th1、Foxp3+Treg细胞百分比显著低于对照组[分别为(1.39±0.14)%vs(2.56±0.18)%;(4.87±0.35)%vs(7.67±0.44)%,P<0.001];哮喘组Th1/Th2及Foxp3+Treg/Th17明显低于对照组(分别为1.66±0.17 vs 5.19±0.56;3.02±0.49 vs 7.38±0.71,P<0.001)。结论除Th1/Th2失衡外,Foxp3+Treg/Th17失衡在哮喘发病中亦有重要作用。
基金Supported by the National Natural Science Foundation of China(Nos.41006105,41176152)the Natural Science Foundation of Fujian Province(Nos.2015J01142,2016J01163)+1 种基金the Program for New Century Excellent Talents in Fujian Province Universities(No.B15138)the Open Fund of Laboratory for Marine Biology and Biotechnology,Qingdao National Laboratory for Marine Science and Technology,Qingdao,China(No.OF2015NO11)
文摘Thyroid hormone is a kind of important hormone which regulates metamorphosis. Its role is well described in amphibian metamorphosis. Thyroid hormones (T3 and T4) have also been demonstrated to play a role in metamorphosis of marine invertebrates. However, the mechanism of thyroid hormone in metamorphosis of marine invertebrates remains unknown. A homolog of vertebrate thyroid hormone receptor (TR) was cloned and identified in abalone Haliotis diversicolor and was named HdTR . The mRNA expressions of HdTR , thyroid peroxidase ( TPO ), thyroid peroxidase 1 ( TPO1 ), idothyronine deiodinase Ⅲ( IDⅢ) and integrin alpha-V ( ITGAV ) had significant diff erence in metamorphosis of H . diversicolor . Metamorphosis rate and mortality rate were significantly diff erent in HdTR RNAi experiment and T3 inducing experiment. In RNAi experiment, ITGAV and CCND1 (cyclin D1) expression of dsRNA HdTR exposing group were significantly lower than those of blank control and negative control. But CTNNB (catenin beta) expression of dsRNA HdTR exposing group was higher than that those of blank control and negative control. ERK (extracellular signal regulated kinases) and PI3K (phosphoinositide-3-kinase) had no significant diff erence in RNAi experiment. Moreover, ITGAV of 1 μmol/L T3 group was significantly lower than that of 0 μmol/L T3 group, PI3K expression of 10 μmol/L T3 group was higher than that of 0 μmol/L T3 group, and the other genes expression had no significant diff erence in T3 inducing experiment. The data of genes expression suggested that CCND1 might be an eff ector gene of TR genomic action, while CTNNB might be regulated by unliganded TR. CCND1 and CTNNB may be involved in cell proliferation of metamorphosis. T3 might regulate the expression level of PI3K via nongenomic way. These results shed light on the mechanism of thyroid hormone in abalone metamorphosis.
文摘The BMPPT (4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione)was synthesized from BMPP. Its m.p. is 106-108℃. The results of the element analysis are as follows: C, 68.51%, H, 4.51%, N, 9.26%, S, 11.47%, which are in conformity with the theoretical value (C, 69.15%, H, 4.76%, N, 9.52%, S, 10.90%). The solvent extraction of Th4+ from nitric acid solution by BMPPT in benzene was studied. The extraction ability of BMPPT is not so high as that of its parent (BMPP). The Th4+ distribution ratio (DTh) increases with the increasing pH of the aqueous phase, and pH1/2 for Th4+ was 3.2 ([BMPPT]=0.10 mol/L). When the pH increases, the distribution ratio of Th4+ increases linearly with the slope of 1 .59. When the concentration of BMPPT increases, the distribution ratio of Th4+ increases rapidly. The lgDTh-lg[BMPPT] is linear with the slope of 1.42 and the extraction mechanism is the cation ion-exchange.
