[Objective] This study aimed to clone and analyze the cysteine proteinase inhibitor gene from seedless litchi. [Method] According to the EST se- quence of cysteine proteinase inhibitor in constructed SSH snhtraetive l...[Objective] This study aimed to clone and analyze the cysteine proteinase inhibitor gene from seedless litchi. [Method] According to the EST se- quence of cysteine proteinase inhibitor in constructed SSH snhtraetive library of seedless litchi abortion, nucleotide sequence of the cysteine proteinase inhibitor gene was obtained by using RACE technology and analyzed by using bioinformatics software. [ Result ] A cysteine protease inhibitor gene was obtained with the sequence of 635 bp containing a 321 bp open reading frame. It was predicted that the erlcoded protein contained 106 amino acids with conserved domain of cysteine proteinase inhibitor and had relatively high homology with the cysteine proteinase inhibitor gene of several species, [ Conclusion] This study laid the foundation for further ex- ploring the physiological functions of this cysteine proteinase inhibitor gene in plants.展开更多
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
The study was aimed at the evaluation of the effects of breed, age, different digestion stimulators, and dietary crude protein (CP) level on the activities of proteolytic enzymes in pancreatic tissue and duodenal chym...The study was aimed at the evaluation of the effects of breed, age, different digestion stimulators, and dietary crude protein (CP) level on the activities of proteolytic enzymes in pancreatic tissue and duodenal chymus (in vivo), serum trypsin and α1-proteinase inhibitor (A1PI) concentrations in meat-type chicks. The study of age dynamics of trypsin and A1PI concentrations was performed on the chicks of hybrid cross “Smena-8”and two parental lines (Plymouth Rock and Cornish) fed standard commercial corn-wheat-SBM diets. Twenty birds per breed were euthanized at 1, 7, 14, 21, 28 and 35 days of age to obtain blood samples and pancreatic homogenate. Experiments on the effects of different digestion promotors (probiotic, acidifier, phytobiotic, enzymatic preparation) and different CP levels (finisher diet, CP 20%, vs. ground corn, CP 8.5%) were performed on 12 hybrid chicks with fistulated duodenum from 14 to 50 days of age. The following conclusions were made: 1) At 1 day of age high proteolytic activity in pancreatic tissue and maximal serum concentrations of trypsin and A1PI were found in both hybrid and parental lines. Since 7 to 35 days of age A1PI concentration was nearly constant, serum trypsin concentration decreased while proteolytic activity in pancreatic tissue exhibited undulate increase;2) Proteolytic activity in pancreatic tissue was higher in hybrids compared to the parental lines from 7 to 35 days of age (p 0.05);3) Supplementation of diet with exogenous enzymes stimulated the digestion due to the increase in protease activity in duodenal chymus by 9.1% compared to unsupplemented control (p 0.05);4) Proteolytic activity in duodenal chymus significantly responded to the substitution of ground corn for the complete diet by 2-fold decrease while serum trypsin concentration responded by 2.5-fold increase (p 0.001). This fact can indicate that physiological functions of digestive proteases are not confined to the digestive processes.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
文摘[Objective] This study aimed to clone and analyze the cysteine proteinase inhibitor gene from seedless litchi. [Method] According to the EST se- quence of cysteine proteinase inhibitor in constructed SSH snhtraetive library of seedless litchi abortion, nucleotide sequence of the cysteine proteinase inhibitor gene was obtained by using RACE technology and analyzed by using bioinformatics software. [ Result ] A cysteine protease inhibitor gene was obtained with the sequence of 635 bp containing a 321 bp open reading frame. It was predicted that the erlcoded protein contained 106 amino acids with conserved domain of cysteine proteinase inhibitor and had relatively high homology with the cysteine proteinase inhibitor gene of several species, [ Conclusion] This study laid the foundation for further ex- ploring the physiological functions of this cysteine proteinase inhibitor gene in plants.
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The study was aimed at the evaluation of the effects of breed, age, different digestion stimulators, and dietary crude protein (CP) level on the activities of proteolytic enzymes in pancreatic tissue and duodenal chymus (in vivo), serum trypsin and α1-proteinase inhibitor (A1PI) concentrations in meat-type chicks. The study of age dynamics of trypsin and A1PI concentrations was performed on the chicks of hybrid cross “Smena-8”and two parental lines (Plymouth Rock and Cornish) fed standard commercial corn-wheat-SBM diets. Twenty birds per breed were euthanized at 1, 7, 14, 21, 28 and 35 days of age to obtain blood samples and pancreatic homogenate. Experiments on the effects of different digestion promotors (probiotic, acidifier, phytobiotic, enzymatic preparation) and different CP levels (finisher diet, CP 20%, vs. ground corn, CP 8.5%) were performed on 12 hybrid chicks with fistulated duodenum from 14 to 50 days of age. The following conclusions were made: 1) At 1 day of age high proteolytic activity in pancreatic tissue and maximal serum concentrations of trypsin and A1PI were found in both hybrid and parental lines. Since 7 to 35 days of age A1PI concentration was nearly constant, serum trypsin concentration decreased while proteolytic activity in pancreatic tissue exhibited undulate increase;2) Proteolytic activity in pancreatic tissue was higher in hybrids compared to the parental lines from 7 to 35 days of age (p 0.05);3) Supplementation of diet with exogenous enzymes stimulated the digestion due to the increase in protease activity in duodenal chymus by 9.1% compared to unsupplemented control (p 0.05);4) Proteolytic activity in duodenal chymus significantly responded to the substitution of ground corn for the complete diet by 2-fold decrease while serum trypsin concentration responded by 2.5-fold increase (p 0.001). This fact can indicate that physiological functions of digestive proteases are not confined to the digestive processes.
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..
