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1.
Rejuvenation Res ; 22(6): 465-477, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30672382

RESUMO

Radix paeoniae alba (RPA) and Veratrum nigrum (VN) L. belong to the 18 incompatible medicaments and have been prohibited for thousands of years in China. Previous studies focused on the chemical constituents that induced the toxicological response of the two agents, but this study offers preliminary insight into the pharmacodynamics and mechanism on estrogenic activity, which is responsible for their incompatibility. We undertook a characterization of the interaction on estrogenic activity of RPA and VN using in vivo models of immature and ovariectomized (OVX) mice and in vitro studies focused on estrogen receptor (ER) pathway for further mechanism. VN disturbed the estrogenic efficacy of RPA in promoting development of uterus and vagina in immature mice, and reversing the atrophy of reproductive tissues in OVX mice by decreasing the increase of serum estrogen level and upregulation of ER expression in reproductive tissues by treatment with RPA. Besides, VN antagonized the estrogenic efficacy of RPA in stimulating the binding with ERα and ERß, increasing ERα/ß-estrogen response element (ERE) luciferase reporter gene expression and promoting MCF-7 cell viability. This study provided evidence that VN antagonized the estrogenic efficacy of RPA by decreasing the up-regulations of estrogen biosynthesis in circulation and ERs in target tissues caused by RPA, and through ER-ERE-dependent pathway.


Assuntos
Estrogênios/metabolismo , Ovário/metabolismo , Paeonia/química , Extratos Vegetais/farmacologia , Receptores Estrogênicos/metabolismo , Veratrum/química , Animais , Feminino , Humanos , Células MCF-7 , Camundongos , Ovariectomia , Ovário/efeitos dos fármacos , Ovário/cirurgia , Útero/efeitos dos fármacos , Útero/metabolismo , Útero/cirurgia , Vagina/efeitos dos fármacos , Vagina/metabolismo , Vagina/cirurgia
2.
Phytother Res ; 33(1): 117-129, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30375037

RESUMO

Radix Paeoniae Alba (RPA) is widely used in clinical treatment for gynecological diseases, particularly abnormal menstruation, menstrual pain, and breast tenderness; however, no scientific evidence base links RPA to estrogen replacement therapy. In this study, we characterize estrogenic activity of RPA using immature and ovariectomized (OVX) mice together with in vitro studies focus on estrogen receptor (ER) pathway for molecular mechanism. RPA treatments demonstrated significant estrogenic activity, as indicated by promoting the development of uterus and vagina in immature mice, reversing the atrophy of uterus and vagina in OVX mice, up-regulating the expressions of ERα and ERß at protein and mRNA level in reproductive tissues. Meanwhile, RPA significantly increased serum estradiol and clearly decreased serum luteinizing hormone and follicle-stimulating hormone of immature/OVX mice. Moreover, RPA could induce ER positive MCF-7 cell from S-phase to G2 stage and induce proliferation and no influence on ER negative MDA-MB-231 cell. RPA could bind with ERα and ERß and significantly stimulate ERα/ß-estrogen response element (ERE) luciferase reporter gene expression. All activities were inhibited by the ER antagonist ICI 182,780. This study illustrates RPA exerts estrogenic effects by stimulating biosynthesis of estrogen in circulation, up-regulating ERs in target tissues, and mimicking the estrogen through ER-ERE-dependent pathway.


Assuntos
Medicamentos de Ervas Chinesas/química , Estrogênios/farmacologia , Paeonia/química , Receptores Estrogênicos/metabolismo , Útero/efeitos dos fármacos , Vagina/efeitos dos fármacos , Animais , Medicamentos de Ervas Chinesas/farmacologia , Medicamentos de Ervas Chinesas/uso terapêutico , Feminino , Humanos , Camundongos , Ovariectomia , Regulação para Cima
4.
Aging (Albany NY) ; 9(1): 156-172, 2016 12 20.
Artigo em Inglês | MEDLINE | ID: mdl-27997360

RESUMO

Salvia miltiorrhiza bunge(SM) is a popular herb for alleviating menopausal symptoms, although the scientific evidence of applying SM to estrogen replacement therapy is limited. In this study, we characterized the estrogenic activity of SM using in vivo models of immature and ovariectomized (OVX) mice and performed in vitro studies focusing on the estrogen receptor (ER) pathway for further molecular characterizations. SM treatments demonstrated significant estrogenic activity by promoting the development of uterus and vagina in immature mice, restoring the estrus cycle and reversing the atrophy of reproductive tissues in OVX mice, as well as increasing the expressions of ERα and ERß at protein and mRNA level in the reproductive tissues. Meanwhile, SM significantly increased estradiol in serum, and decreased follicle-stimulating hormone (FSH) and luteinizing hormone (LH) in the circulation of immature and OVX mice. SM could stimulate the binding effect of ERα and ERß, and significantly induce ERα/ß-estrogen response element (ERE) luciferase reporter gene expression. All these activities were inhibited by the ER antagonist ICI182, 780. This study demonstrates SM exerts estrogenic effects by stimulating biosynthesis of estrogen and increasing ERs in target tissues without side effects on reproductive tissues and through ER-ERE-dependent pathway.


Assuntos
Estradiol/sangue , Receptor alfa de Estrogênio/metabolismo , Receptor beta de Estrogênio/metabolismo , Extratos Vegetais/farmacologia , Salvia miltiorrhiza , Útero/efeitos dos fármacos , Vagina/efeitos dos fármacos , Animais , Linhagem Celular , Proliferação de Células/efeitos dos fármacos , Estradiol/análogos & derivados , Estradiol/farmacologia , Antagonistas do Receptor de Estrogênio/farmacologia , Ciclo Estral/efeitos dos fármacos , Ciclo Estral/metabolismo , Feminino , Fulvestranto , Camundongos , Ovariectomia , Útero/metabolismo , Vagina/metabolismo
5.
Sci Rep ; 6: 26924, 2016 05 27.
Artigo em Inglês | MEDLINE | ID: mdl-27229740

RESUMO

Panax ginseng (GS) and Veratrum nigrum (VN) are representative of incompatible pairs in "eighteen antagonistic medicaments" that have been recorded in the Chinese medicinal literature for over 2,000 years. However, evidence linking interference effects with combination use is scare. Based on the estrogen-like effect of GS described in our previous studies, we undertake a characterization of the interaction on estrogenic activity of GS and VN using in vivo models of immature and ovariectomized (OVX) mice and in vitro studies with MCF-7 cells for further mechanism. VN decreased the estrogenic efficacy of GS on promoting the development of the uterus and vagina in immature mice, and reversing the atrophy of reproductive tissues in OVX mice. VN interfered with the estrogenic efficacy of GS by decreasing the increase of the serum estradiol and the up-regulation of ERα and ERß expressions by treatment with GS. And VN antagonized the estrogenic efficacy of GS on promoting the viability of MCF-7 cells and up-regulation of protein and gene expressions of ERs. In conclusion, this study provided evidence that GS and VN decreased effects on estrogenic activity, which might be related to regulation of estrogen secretion and ERs.


Assuntos
Estradiol/sangue , Receptor alfa de Estrogênio/genética , Receptor beta de Estrogênio/genética , Panax/química , Extratos Vegetais/farmacologia , Veratrum/química , Animais , Antagonismo de Drogas , Medicamentos de Ervas Chinesas , Receptor alfa de Estrogênio/metabolismo , Receptor beta de Estrogênio/metabolismo , Feminino , Hormônio Foliculoestimulante/sangue , Hormônio Foliculoestimulante/genética , Regulação da Expressão Gênica , Humanos , Hormônio Luteinizante/sangue , Hormônio Luteinizante/genética , Células MCF-7 , Medicina Tradicional Chinesa , Camundongos , Ovariectomia , Maturidade Sexual/fisiologia , Útero/efeitos dos fármacos , Útero/crescimento & desenvolvimento , Útero/metabolismo , Vagina/efeitos dos fármacos , Vagina/crescimento & desenvolvimento , Vagina/metabolismo
6.
Sci Rep ; 5: 17436, 2015 Dec 08.
Artigo em Inglês | MEDLINE | ID: mdl-26644197

RESUMO

The Chinese herbal preparation QiBaoMeiRan formula (QBMR) displayed estrogenic effects in ovariectomized rats after long-term administration in a previous study. The uterus and vagina are negatively influenced by estrogens in hormone therapy. While QBMR is known to be a phytoestrogen, its estrogenic effects and safety on reproductive tissues after short-term administration and its mechanism via estrogen receptor (ER) pathway haven't been studied. Here, we characterized its estrogenic effects using immature mice together with in vitro studies for further molecular characterization. Immature mice were treated with QBMR at doses of 1.125, 2.25, and 4.5 g/kg for 7 days. 1.125 and 2.25 g/kg QBMR promoted the growth and development of uterus and vagina, and upregulated ERα and ERß expression in reproductive tissues. QBMR had a stimulatory effect on proliferating cell nuclear antigen in vagina but not in uterus, and was without any influence on ki-67 antigen in uterus and vagina. QBMR significantly induced luciferase expression from the ERα/ß-estrogen response element (ERE) luciferase reporter and upregulated ERα and ERß expressions in MCF-7 cells, which were significantly inhibited by estrogen antagonist ICI182,780. This study demonstrated QBMR exerts estrogenic effects on reproductive tissues without side effects and through ER-ERE-dependent pathway.


Assuntos
Medicamentos de Ervas Chinesas/farmacologia , Reprodução/efeitos dos fármacos , Animais , Biomarcadores , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Moduladores de Receptor Estrogênico/farmacologia , Estrogênios/sangue , Estrogênios/metabolismo , Feminino , Hormônio Foliculoestimulante/sangue , Regulação da Expressão Gênica/efeitos dos fármacos , Humanos , Antígeno Ki-67/genética , Antígeno Ki-67/metabolismo , Hormônio Luteinizante/sangue , Camundongos , Membrana Mucosa/citologia , Membrana Mucosa/efeitos dos fármacos , Membrana Mucosa/metabolismo , Antígeno Nuclear de Célula em Proliferação/genética , Antígeno Nuclear de Célula em Proliferação/metabolismo , Receptores Estrogênicos/genética , Receptores Estrogênicos/metabolismo , Reprodução/genética , Útero/efeitos dos fármacos , Útero/metabolismo , Vagina/efeitos dos fármacos , Vagina/metabolismo
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