目的:分析外周血核苷酸结合寡聚化结构域样受体蛋白3(nucleotide binding oligomerization domain like receptor protein 3,NLRP3)-半胱氨酸蛋白酶1(cysteine-aspartic acid protease 1,Caspase-1)-白细胞介素(interleukin,IL)-1β信...目的:分析外周血核苷酸结合寡聚化结构域样受体蛋白3(nucleotide binding oligomerization domain like receptor protein 3,NLRP3)-半胱氨酸蛋白酶1(cysteine-aspartic acid protease 1,Caspase-1)-白细胞介素(interleukin,IL)-1β信号轴与肺癌的相关性。方法:选取2021年6月—2023年8月江苏省连云港市赣榆区人民医院收治的肺癌住院患者72例初诊患者(肺癌组)和72例健康体检者(健康对照组)。比较两组外周血单核细胞、NLRP3、Caspase-1、IL-1β水平及肺功能[1秒用力呼气量(forced expiratory volume in one second,FEV_(1))、用力肺活量(forced vital capacity,FVC)、FEV_(1)/FVC],并分析肺癌组外周血中NLRP3、IL-1β水平与FEV_(1)、FVC、FEV_(1)/FVC的相关性。结果:肺癌组患者FEV_(1)、FVC、FEV_(1)/FVC水平均显著低于健康对照组,差异有统计学意义(P均<0.05);外周血中Nlrp3、Caspase-1、Il-1βmRNA相对表达水平和Caspase-1和IL-1β分泌水平均高于健康对照组,差异有统计学意义(P均<0.05);Spearman相关分析显示,肺癌组患者外周血单核细胞Nlrp3基因mRNA相对表达量与FEV_(1)、FEV_(1)/FVC水平呈负相关(P<0.05);而外周血IL-1β分泌水平与FEV_(1)/FVC水平呈正相关(P<0.05)。结论:外周血单核细胞中NLRP3 mRNA相对表达水平及外周血IL-1β分泌水平与肺癌进展呈负相关,可反映肺癌进展程度,对肺癌的筛查和诊断具有潜在的参考价值。展开更多
Cysteine-rich secretory protein-1 （CRISP-1） is a glycoprotein secreted by the epididymal epithelium. It is a member of a large family of proteins characterized by two conserved domains and a set of 16 conserved cyst...Cysteine-rich secretory protein-1 （CRISP-1） is a glycoprotein secreted by the epididymal epithelium. It is a member of a large family of proteins characterized by two conserved domains and a set of 16 conserved cysteine residues. In mammals, CRISP-1 inhibits sperm-egg fusion and can suppress sperm capacitation. The molecular mechanism of action of the mammalian CRISP proteins remains unknown, but certain non-mammalian CRISP proteins can block ion channels. In the rat, CRISP-1 comprises two forms referred to as Proteins D and E. Recent work in our laboratory demonstrates that the D form of CRISP-1 associates transiently with the sperm surface, whereas the E form binds tightly. When the spermatozoa are washed, the E form of CRISP-1 persists on the sperm surface after all D form has dissociated. Cross-linking studies demonstrate different protein-protein interaction patterns for D and E, although no binding partners for either protein have yet been identified. Mass spectrometric analyses revealed a potential post-translational modification on the E form that is not present on the D form. This is the only discernable difference between Proteins D and E, and presumably is responsible for the difference in behavior of these two forms of rat CRISP- 1. These studies demonstrate that the more abundant D form interacts with spermatozoa transiently, possibly with a specific receptor on the sperm surface, consistent with a capacitation-suppressing function during sperm transit and storage in the epididymis, and also confirm a tightly bound population of the E form that could act in the female reproductive tract. （Asian J Androl 2007 July; 9： 508-514）展开更多
A series of N1-substituted-3-aryl-4-alkyl-4, 5-dihydro-1H-1-pyrazolethiocarboxamide were prepared from the Mannich bases of aryl ketones in good yields. Some derivatives were found to be active against the cysteine p...A series of N1-substituted-3-aryl-4-alkyl-4, 5-dihydro-1H-1-pyrazolethiocarboxamide were prepared from the Mannich bases of aryl ketones in good yields. Some derivatives were found to be active against the cysteine protease of T.cruzi..展开更多
AIM: To investigate the effects of fluoxetine on depression-induced changes of mast cell morphology and protease-1 (rMCP-1) expression in rats. METHODS: A Sprague-Dawley rat model of chronic stress-induced depression ...AIM: To investigate the effects of fluoxetine on depression-induced changes of mast cell morphology and protease-1 (rMCP-1) expression in rats. METHODS: A Sprague-Dawley rat model of chronic stress-induced depression was established. Fifty experimental rats were randomly divided into the following groups: normal control group, fluoxetine + normal control group, depressed model group, saline + depressed model group, and fluoxetine + depressed model group. Laser scanning confocal microscopy (LSCM) immunofluorecence and RT-PCR techniques were used to investigate rMCP-1 expression in gastric antrum. Mast cell morphology was observed under transmission electron microscopy. ANOVA was used for statistical analysis among groups.RESULTS: Morphologic observation indicated that depression induced mast cell proliferation, activation, and granule hyperplasia. Compared with the normal control group, the average immunofluorescence intensity of gastric antrum rMCP-1 significantly increased in depressed model group (37.4 ± 7.7 vs 24.5 ± 5.6, P < 0.01) or saline + depressed model group (39.9 ± 5.0 vs 24.5 ± 5.6, P < 0.01), while there was no significant difference between fluoxetine + normal control group (23.1 ± 3.4) or fluoxetine + depressed model group (26.1 ± 3.6) and normal control group.The average level of rMCP-1mRNA of gastric antrum significantly increased in depressed model group (0.759 ± 0.357 vs 0.476 ± 0.029, P < 0.01) or saline + depressed model group (0.781 ± 0.451 vs 0.476 ± 0.029, P < 0.01 ), while no significant difference was found between fluoxetine + normal control group (0.460 ± 0.027) or fluoxetine + depressed model group (0.488 ± 0.030) and normal control group. Fluoxetine showed partial inhibitive effects on mast cell ultrastructural alterations and de-regulated rMCP-1 expression in gastric antrum of the depressed rat model.CONCLUSION: Chronic stress can induce mast cell proliferation, activation, and granule hyperplasia in gastric antrum. Fluoxetine counteracts such changes in the depressed rat model.展开更多
文摘目的:分析外周血核苷酸结合寡聚化结构域样受体蛋白3(nucleotide binding oligomerization domain like receptor protein 3,NLRP3)-半胱氨酸蛋白酶1(cysteine-aspartic acid protease 1,Caspase-1)-白细胞介素(interleukin,IL)-1β信号轴与肺癌的相关性。方法:选取2021年6月—2023年8月江苏省连云港市赣榆区人民医院收治的肺癌住院患者72例初诊患者(肺癌组)和72例健康体检者(健康对照组)。比较两组外周血单核细胞、NLRP3、Caspase-1、IL-1β水平及肺功能[1秒用力呼气量(forced expiratory volume in one second,FEV_(1))、用力肺活量(forced vital capacity,FVC)、FEV_(1)/FVC],并分析肺癌组外周血中NLRP3、IL-1β水平与FEV_(1)、FVC、FEV_(1)/FVC的相关性。结果:肺癌组患者FEV_(1)、FVC、FEV_(1)/FVC水平均显著低于健康对照组,差异有统计学意义(P均<0.05);外周血中Nlrp3、Caspase-1、Il-1βmRNA相对表达水平和Caspase-1和IL-1β分泌水平均高于健康对照组,差异有统计学意义(P均<0.05);Spearman相关分析显示,肺癌组患者外周血单核细胞Nlrp3基因mRNA相对表达量与FEV_(1)、FEV_(1)/FVC水平呈负相关(P<0.05);而外周血IL-1β分泌水平与FEV_(1)/FVC水平呈正相关(P<0.05)。结论:外周血单核细胞中NLRP3 mRNA相对表达水平及外周血IL-1β分泌水平与肺癌进展呈负相关,可反映肺癌进展程度,对肺癌的筛查和诊断具有潜在的参考价值。
文摘Cysteine-rich secretory protein-1 （CRISP-1） is a glycoprotein secreted by the epididymal epithelium. It is a member of a large family of proteins characterized by two conserved domains and a set of 16 conserved cysteine residues. In mammals, CRISP-1 inhibits sperm-egg fusion and can suppress sperm capacitation. The molecular mechanism of action of the mammalian CRISP proteins remains unknown, but certain non-mammalian CRISP proteins can block ion channels. In the rat, CRISP-1 comprises two forms referred to as Proteins D and E. Recent work in our laboratory demonstrates that the D form of CRISP-1 associates transiently with the sperm surface, whereas the E form binds tightly. When the spermatozoa are washed, the E form of CRISP-1 persists on the sperm surface after all D form has dissociated. Cross-linking studies demonstrate different protein-protein interaction patterns for D and E, although no binding partners for either protein have yet been identified. Mass spectrometric analyses revealed a potential post-translational modification on the E form that is not present on the D form. This is the only discernable difference between Proteins D and E, and presumably is responsible for the difference in behavior of these two forms of rat CRISP- 1. These studies demonstrate that the more abundant D form interacts with spermatozoa transiently, possibly with a specific receptor on the sperm surface, consistent with a capacitation-suppressing function during sperm transit and storage in the epididymis, and also confirm a tightly bound population of the E form that could act in the female reproductive tract. （Asian J Androl 2007 July; 9： 508-514）
文摘A series of N1-substituted-3-aryl-4-alkyl-4, 5-dihydro-1H-1-pyrazolethiocarboxamide were prepared from the Mannich bases of aryl ketones in good yields. Some derivatives were found to be active against the cysteine protease of T.cruzi..
文摘AIM: To investigate the effects of fluoxetine on depression-induced changes of mast cell morphology and protease-1 (rMCP-1) expression in rats. METHODS: A Sprague-Dawley rat model of chronic stress-induced depression was established. Fifty experimental rats were randomly divided into the following groups: normal control group, fluoxetine + normal control group, depressed model group, saline + depressed model group, and fluoxetine + depressed model group. Laser scanning confocal microscopy (LSCM) immunofluorecence and RT-PCR techniques were used to investigate rMCP-1 expression in gastric antrum. Mast cell morphology was observed under transmission electron microscopy. ANOVA was used for statistical analysis among groups.RESULTS: Morphologic observation indicated that depression induced mast cell proliferation, activation, and granule hyperplasia. Compared with the normal control group, the average immunofluorescence intensity of gastric antrum rMCP-1 significantly increased in depressed model group (37.4 ± 7.7 vs 24.5 ± 5.6, P < 0.01) or saline + depressed model group (39.9 ± 5.0 vs 24.5 ± 5.6, P < 0.01), while there was no significant difference between fluoxetine + normal control group (23.1 ± 3.4) or fluoxetine + depressed model group (26.1 ± 3.6) and normal control group.The average level of rMCP-1mRNA of gastric antrum significantly increased in depressed model group (0.759 ± 0.357 vs 0.476 ± 0.029, P < 0.01) or saline + depressed model group (0.781 ± 0.451 vs 0.476 ± 0.029, P < 0.01 ), while no significant difference was found between fluoxetine + normal control group (0.460 ± 0.027) or fluoxetine + depressed model group (0.488 ± 0.030) and normal control group. Fluoxetine showed partial inhibitive effects on mast cell ultrastructural alterations and de-regulated rMCP-1 expression in gastric antrum of the depressed rat model.CONCLUSION: Chronic stress can induce mast cell proliferation, activation, and granule hyperplasia in gastric antrum. Fluoxetine counteracts such changes in the depressed rat model.
