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- 저자 : Faloni (검색결과 4 건)
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Sergio Faloni de Andrade,Vânia Floriani Noldin,Franco Delle Monache,Valdir Cechinel Filho,Eros Comunello,Rivaldo Niero 대한약학회 2008 Archives of Pharmacal Research Vol.31 No.1
The hexane, chloroform, ethyl acetate and aqueous-soluble fractions from leaves of Maytenus robusta (Celastraceae) were evaluated for their protective actions against ethanol-induced gastric lesions in rats. The treatment with all fractions (150 mg/kg) and omeprazol (30 mg/kg) significantly reduced the lesion index, the total lesion area, and the percentage of lesion, in comparison with the control group (p<0.05). Since the ethyl acetate-soluble fraction was found to be most active in the pylorus ligated model, this fraction was further investigated and resulted in the isolation of triterpene 3,15-dioxo-21α-hydroxy friedelane. The triterpene was evaluated in the HCl/ethanol-induced ulcer model in mice. In this assay, both the groups treated with 3,15-dioxo-21α-hydroxy friedelane and omeprazol, at a dose of 30 mg/kg, presented a significant reduction in lesion index, total lesion area, and in the percentage of the lesion, when compared with the control group (p<0.05). The result suggests that the antiulcer effect observed in the extract and fractions may be attributed, at least in part, to this compound. Further experiments are underway to determine which antiulcer mechanisms involved in gastroprotection.
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Deandrade, Sergio Faloni,Comunello, Eros,Noldin, Vania Floriani,Monache, Franco Delle,Filho, Valdir Cechinel,Niero, Rivaldo 대한약학회 2008 Archives of Pharmacal Research Vol.31 No.1
The hexane, chloroform, ethyl acetate and aqueous-soluble fractions from leaves of Maytenus robusta (Celastraceae) were evaluated for their protective actions against ethanol-induced gastric lesions in rats. The treatment with all fractions (150 mg/kg) and omeprazol (30 mg/kg) significantly reduced the lesion index, the total lesion area, and the percentage of lesion, in comparison with the control group (p<0.05). Since the ethyl acetate-soluble fraction was found to be most active in the pylorus ligated model, this fraction was further investigated and resulted in the isolation of triterpene 3, 15-dioxo-21${\alpha}$-hydroxy friedelane. The triterpene was evaluated in the HCI/ethanol-induced ulcer model in mice. In this assay, both the groups treated with 3, 15-dioxo-21${\alpha}$-hydroxy friedelane and omeprazol, at a dose of 30 mg/kg, presented a significant redduction in lesion index, total lesion area, and in the percentage of the lesion, when compared with the control group (p<0.05). The result suggests that the antiulcer effect observed in the extract and fractions may be attributed, at least in part, to this compound. Further experiments are underway to determine which antiulcer mechanisms involved in gastroprotection.
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dos Santos, Pamela Leticia,de Molon, Rafael Scaf,Queiroz, Thallita Pereira,Okamoto, Roberta,de Souza Faloni, Ana Paula,Gulinelli, Jessica Lemos,Luvizuto, Eloa Rodrigues,Garcia, Idelmo Rangel Junior Korean Academy of Periodontology 2016 Journal of Periodontal & Implant Science Vol.46 No.3
Purpose: We sought to evaluate the effectiveness of bone substitutes in circumferential periimplant defects created in the rabbit tibia. Methods: Thirty rabbits received 45 implants in their left and right tibia. A circumferential bone defect (6.1 mm in diameter/4 mm depth) was created in each rabbit tibia using a trephine bur. A dental implant ($4.1mm{\times}8.5mm$) was installed after the creation of the defect, providing a 2-mm gap. The bone defect gaps between the implant and the bone were randomly filled according to the following groups: blood clot (CO), particulate Bio-Oss$^{(R)}$ (BI), and Bio-Oss$^{(R)}$ Collagen (BC). Ten animals were euthanized after periods of 15, 30, and 60 days. Biomechanical analysis by means of the removal torque of the implants, as well as histologic and immunohistochemical analyses for protein expression of osteocalcin (OC), Runx2, OPG, RANKL, and TRAP were evaluated. Results: For biomechanics, BC showed a better biological response ($61.00{\pm}15.28Ncm$) than CO ($31.60{\pm}14.38Ncm$) at 30 days. Immunohistochemical analysis showed significantly different OC expression in CO and BC at 15 days, and also between the CO and BI groups, and between the CO and BC groups at 60 days. After 15 days, Runx2 expression was significantly different in the BI group compared to the CO and BC groups. RANKL expression was significantly different in the BI and CO groups and between the BI and BC groups at 15 days, and also between the BI and CO groups at 60 days. OPG expression was significantly higher at 60 days postoperatively in the BI group than the CO group. Conclusions: Collectively, our data indicate that, compared to CO and BI, BC offered better bone healing, which was characterized by greater RUNX2, OC, and OPG immunolabeling, and required greater reversal torque for implant removal. Indeed, along with BI, BC presents promising biomechanical and biological properties supporting its possible use in osteoconductive grafts for filling peri-implant gaps.
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Pâmela Letícia dos Santos,Rafael Scaf de Molon,Thallita Pereira Queiroz,Roberta Okamoto,Ana Paula de Souza Faloni,Jéssica Lemos Gulinelli,Eloá Rodrigues Luvizuto,Idelmo Rangel Garcia Junior 대한치주과학회 2016 Journal of Periodontal & Implant Science Vol.46 No.3
Purpose: We sought to evaluate the effectiveness of bone substitutes in circumferential periimplant defects created in the rabbit tibia. Methods: Thirty rabbits received 45 implants in their left and right tibia. A circumferential bone defect (6.1 mm in diameter/4 mm depth) was created in each rabbit tibia using a trephine bur. A dental implant (4.1 mm × 8.5 mm) was installed after the creation of the defect, providing a 2-mm gap. The bone defect gaps between the implant and the bone were randomly filled according to the following groups: blood clot (CO), particulate Bio-Oss® (BI), and Bio-Oss® Collagen (BC). Ten animals were euthanized after periods of 15, 30, and 60 days. Biomechanical analysis by means of the removal torque of the implants, as well as histologic and immunohistochemical analyses for protein expression of osteocalcin (OC), Runx2, OPG, RANKL, and TRAP were evaluated. Results: For biomechanics, BC showed a better biological response (61.00±15.28 Ncm) than CO (31.60±14.38 Ncm) at 30 days. Immunohistochemical analysis showed significantly different OC expression in CO and BC at 15 days, and also between the CO and BI groups, and between the CO and BC groups at 60 days. After 15 days, Runx2 expression was significantly different in the BI group compared to the CO and BC groups. RANKL expression was significantly different in the BI and CO groups and between the BI and BC groups at 15 days, and also between the BI and CO groups at 60 days. OPG expression was significantly higher at 60 days postoperatively in the BI group than the CO group. Conclusions: Collectively, our data indicate that, compared to CO and BI, BC offered better bone healing, which was characterized by greater RUNX2, OC, and OPG immunolabeling, and required greater reversal torque for implant removal. Indeed, along with BI, BC presents promising biomechanical and biological properties supporting its possible use in osteoconductive grafts for filling peri-implant gaps.
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