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Zhonghua Yi Xue Yi Chuan Xue Za Zhi ; 26(3): 249-53, 2009 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-19504433


OBJECTIVE: To investigate the effect of RNA interference mediated angiopoietin-2 (ANG-2) gene silencing on human endometrial carcinoma cell line Ishikawa. METHODS: Short hairpin RNA (shRNA) targeting ANG-2 gene was designed and transfected into Ishikawa cells with Lipofectamine 2000. The mRNA and protein expression level of ANG-2, proliferation, morphological changes, apoptosis, cell cycle and invasive ability of the cells after transfection were analyzed. RESULTS: The shRNA targeting the human ANG-2 gene effectively decreased the expression of ANG-2 on both mRNA and protein level, the proliferation inhibition rate of the Ishikawa cells was 63.11%, cell apoptosis was induced, and the cell cycle was arrested in G1 phase. The apoptotic rate of the Ishikawa cells in the transfected group was significantly higher, and the invasive ability was decreased markedly, than that of control groups. CONCLUSION: The shRNA targeting human ANG-2 gene could reduce ANG-2 expression, inhibit cellular growth and invasion in Ishikawa cells in vitro.

Angiopoietina-2/genética , Apoptose/genética , Neoplasias do Endométrio/genética , Inativação Gênica/efeitos dos fármacos , Lipídeos/farmacologia , RNA Interferente Pequeno/farmacologia , Angiopoietina-2/antagonistas & inibidores , Apoptose/efeitos dos fármacos , Ciclo Celular/efeitos dos fármacos , Ciclo Celular/genética , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Neoplasias do Endométrio/patologia , Feminino , Expressão Gênica/efeitos dos fármacos , Regulação Neoplásica da Expressão Gênica , Inativação Gênica/fisiologia , Humanos , Indicadores e Reagentes , Interferência de RNA , RNA Interferente Pequeno/genética , Transfecção , Células Tumorais Cultivadas
Zhongguo Zhong Xi Yi Jie He Za Zhi ; 26 Suppl: 55-8, 2006 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-17569348


OBJECTIVE: To observe the effect of Fructus Aurantii Immaturus (FAI) on the electro-activity of small intestines in rats, and evaluate the interrelations between the FAI regulating effect and choecystokinin (CCK) and somatostatin (SS). METHODS: Migrating myoelectric complex (MMC) cyclic period, the ratio of the active time to the cyclic period, and the number of the fast wave within the active time per minute were observed between FAI and the normal saline group by external alimentary canal electrodes; the CCK contents in dorsomedial hypothalamic nucleus (DMH), ventromedia hypothalamic nucleus (VMH), lateral hypothalamus area (LHA) and SS in VMH, LHA, paraventricular nucleus (PVN) by using immuno-chemistry technique and micro-image pattern quantitative analysis and scanning system. RESULTS: The MMC cyclic period shortened, the ratio of the active time to the cyclic period increased and the number of the fast wave within the active time per minute increased in the FAI group, which showed significant difference from the normal saline group; CCK positive neurons were reduced in the areas of DMH, VMH and LHA, SS positive neurons were increased in the areas of VMH, LHA and PVN in the FAI gioup,which showed significant difference compared with the normal saline and the blank control group. CONCLUSION: FAI can stimulate the electro-reactivity of small intestines. The stimulative effect of FAI might be related to CCK and SS in hypothamus.

Estimulantes do Sistema Nervoso Central/farmacologia , Medicamentos de Ervas Chinesas/farmacologia , Hipotálamo/efeitos dos fármacos , Intestino Delgado/efeitos dos fármacos , Animais , Colecistocinina/metabolismo , Hipotálamo/metabolismo , Intestino Delgado/fisiologia , Complexo Mioelétrico Migratório/efeitos dos fármacos , Ratos , Somatostatina/metabolismo
Zhongguo Ying Yong Sheng Li Xue Za Zhi ; 20(4): 389-92, 2004 Nov.
Artigo em Chinês | MEDLINE | ID: mdl-21158124


AIM: To investigate the effects of glycyrrhiza decoction on migrating myoelectric complex (MMC) and gastrointestinal hormone in small intestine in rats. METHODS: We observed MMC cycle,phase Ill duration,fast wave numbers of phase III of MMC in one minute, fast wave numbers of one cluster in phase III of MMC of small intestine of glycyrrhiza group and control group rats with electrophysiology method, and immunohistochemistry to examine relative content of serotonin (5-HT), substance p(SP) and vasoactive intestinal polypeptide (VIP) in small intestinal chromophil (EC) and myenteric nerve plexus in small intestine of control group and glycyrrhiza group rats. RESULTS: Compared glycyrrhiza group with control group,we found that glycyrrhiza was able to decrease fast wave numbers in one minute and fast wave numbers in one cluster in phase III of MMC of small intestine (P < 0.05), and evidently extend small intestinal cycle of MMC (P < 0.05), it also shortened the phase III III duration (P < 0.05) or made the phase III of MMC absent. Compared glycyrrhiza group with control group it was indicated that content of 5-HT in small intestinal mucous membrane and myenteric nerve plexus was evidently decreased (P < 0.05), and content of SP in myenteric nerve plexus of small intestine of rats was evidently decreased (P < 0.05), and content of VIP in small intestine of rats was evidently increased (P < 0.05). CONCLUSION: Glycyrrhiza is able to inhibit small intestinal motility, this inhibition is related with the amount of 5-HT, SP, VIP secreted by small intestinal mucous membrane of rats.

Medicamentos de Ervas Chinesas/farmacologia , Motilidade Gastrointestinal/efeitos dos fármacos , Glycyrrhiza , Intestino Delgado/efeitos dos fármacos , Animais , Eletromiografia , Motilidade Gastrointestinal/fisiologia , Intestino Delgado/fisiologia , Ratos , Ratos Sprague-Dawley , Serotonina/análise , Substância P/análise , Peptídeo Intestinal Vasoativo/análise