[Effects of Ginkgo biloba extract on proliferation and apoptosis of T lymphocytes in vitro in rats with asthma].
Zhongguo Zhong Xi Yi Jie He Za Zhi
; 26 Suppl: 47-50, 2006 Jun.
Article
en Zh
| MEDLINE
| ID: mdl-17569345
ABSTRACT
OBJECTIVE:
To explore the partial therapeutic mechanism of Ginkgo Biloba extract (GBE) in treating asthma.METHODS:
Fourteen SD rats were randomly divided into two groups, 7 rats were sensitized as the asthmatic model group and the others taken as the healthy control group. T lymphocytes were isolated from peripheral blood mononuclear cells (PBMCs) of the rats, and were cultured in vitro with Ginkgolide B (BN-52021 group) or Ginkgo Biloba extract 761 (EGb761 group) in different concentrations or without any of them (control group). T lymphocytes proliferation in groups were measured by using MTT assay and the effect of BN-52021 on T lymphocytes apoptosis was analyzed by flow cytometry at various times.RESULTS:
Compared with the control group, BN-52021 could significantly inhibit the proliferation of T lymphocytes in both healthy and asthmatic rats in vitro (P <0. 05). The effects were enhanced as the concentration increasing and the time prolonging, the effects to the latter were higher than those to the former, showing significant difference between them ( P <0.05 ). However, the effect of EGb761 was varied with the concentrations. EGb761 could promote T lymphocytes proliferation at low concentration but inhibit it at high concentration, there was a significant difference as compared with that in the control group ( all P < 0. 05). The apoptotic rate of T lymphocytes rose as the concentration of BN-52021 increasing (P < 0. 01).CONCLUSION:
GBE has different effects on T lymphocytes proliferation since the different ingredients and the concentrations in vitro, and it also has different effects between healthy and asthmatic rats. Ginkgolide B is the main active ingredient among them, it can not only inhibit T lymphocytes proliferation but also increase the apoptotic rate.
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Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
6_ODS3_enfermedades_notrasmisibles
Problema de salud:
6_asthma
/
6_other_respiratory_diseases
Asunto principal:
Asma
/
Extractos Vegetales
/
Linfocitos T
/
Apoptosis
/
Ginkgo biloba
/
Proliferación Celular
Límite:
Animals
Idioma:
Zh
Revista:
Zhongguo Zhong Xi Yi Jie He Za Zhi
Asunto de la revista:
TERAPIAS COMPLEMENTARES
Año:
2006
Tipo del documento:
Article