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1.
Clinics ; 64(10): 993-998, 2009. ilus, tab
Artigo em Inglês | LILACS | ID: lil-529543

RESUMO

OBJECTIVE: To evaluate the effects of the petroleum ether extract of Cissus quadrangularis on the proliferation rate of bone marrow mesenchymal stem cells, the differentiation of marrow mesenchymal stem cells into osteoblasts (osteoblastogenesis) and extracellular matrix calcification. This study also aimed to determine the additive effect of osteogenic media and Cissus quadrangularis on proliferation, differentiation and calcification. METHODS: MSCs were cultured in media with or without Cissus quadrangularis for 4 weeks and were then stained for alkaline phosphatase. Extracellular matrix calcification was confirmed by Von Kossa staining. marrow mesenchymal stem cells cultures in control media and osteogenic media supplemented with Cissus quadrangularis extract (100, 200, 300 µg/mL) were also subjected to a cell proliferation assay (MTT). RESULTS: Treatment with 100, 200 or 300 µg/mL petroleum ether extract of Cissus quadrangularis enhanced the differentiation of marrow mesenchymal stem cells into ALP-positive osteoblasts and increased extracellular matrix calcification. Treatment with 300 µg/mL petroleum ether extract of Cissus quadrangularis also enhanced the proliferation rate of the marrow mesenchymal stem cells. Cells grown in osteogenic media containing Cissus quadrangularis exhibited higher proliferation, differentiation and calcification rates than did control cells. CONCLUSION: The results suggest that Cissus quadrangularis stimulates osteoblastogenesis and can be used as preventive/alternative natural medicine for bone diseases such as osteoporosis.


Assuntos
Animais , Masculino , Ratos , Células da Medula Óssea/efeitos dos fármacos , Cissus/química , Células-Tronco Mesenquimais , Osteoblastos/efeitos dos fármacos , Osteogênese/efeitos dos fármacos , Extratos Vegetais/farmacologia , Fosfatase Alcalina/metabolismo , Células da Medula Óssea/citologia , Calcificação Fisiológica/efeitos dos fármacos , Diferenciação Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Matriz Extracelular/metabolismo , Células-Tronco Mesenquimais , Modelos Animais , Osteoblastos/enzimologia , Ratos Wistar
2.
Clinics ; 63(6): 815-820, 2008. ilus, graf
Artigo em Inglês | LILACS | ID: lil-497896

RESUMO

OBJECTIVE: The aim of the present study was to analyze the effect Cissus quadrangularis plant petroleum ether extract on the development of long bones during the intra-uterine developmental stage in rats. METHODS: Pregnant rats (n=12) were randomly assigned into either a control group (n=6) or a Cissus quadrangularis treatment (n=6) group. Pregnant rats in the Cissus quadrangularis group were treated with Cissus quadrangularis petroleum ether extract at a dose of 500 mg/kg body weight from gestation day 9 until delivery. The animals in the control group received an equal volume of saline. Newborn pups were collected from both groups for alizarin red S - alcian blue staining to differentiate ossified and unossified cartilage. The ossified cartilage (bone) was morphometrically analyzed using Scion image software. RESULTS: Morphometric analysis revealed that the percentage of the total length of ossified cartilage (bone) in pups born to treated dams was significantly higher (P<0.001- -0.0001) than that of the control group. CONCLUSION: The results of the present study suggest that maternal administration of Cissus quadrangularis petroleum ether extract during pregnancy can stimulate the development of fetal bone growth during the intra-uterine developmental period.


Assuntos
Animais , Feminino , Gravidez , Ratos , Alcanos , Desenvolvimento Ósseo/efeitos dos fármacos , Cissus/química , Desenvolvimento Fetal/efeitos dos fármacos , Extratos Vegetais/farmacologia , Distribuição Aleatória , Ratos Wistar , Testes de Toxicidade Aguda
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