Objective: To explore the effectiveness of various interventions in accelerating tooth movement, a systematic review and net-work meta analysis were used to draw a conclusion. Methods: MEDLINE, EMBASE, Willey Library,...Objective: To explore the effectiveness of various interventions in accelerating tooth movement, a systematic review and net-work meta analysis were used to draw a conclusion. Methods: MEDLINE, EMBASE, Willey Library, EBSCO, Web of Science Databases, and Cochrane Central Register of Controlled Trials databases to identify relevant studies. ADDIS 1.16.6 and Stata 16.0 software were used for NMA. Results: Five thousand five hundred and forty-two articles were searched out. After screening by two independent investigators, forty-seven randomized controlled trials, 1 390 participants, were included in this network meta-analysis. A total of 11 interventions involving Piezocision (Piezo), Photobiomodulation therapy (PBMT), Plate- let-rich plasma(PRP), Electromagnetic field(EF), Low intensity laser therapy(LLLT), Low intensity pulsed ultrasound(LI-PUS), Low-frequency vibrations(LFV), Distraction osteogenesis(DAD), Corticotomy(Corti), Microosteoperforations (MOPS), Traditional orthodontic(OT)were identified and classified into 3 classes including surgical treatment, non-surgical treatment and traditional orthodontic treatment. According to SUCRA probability ranking of the best intervention effect, when orthodontic treatment lasted for 1 month, PBMT (90.6%), Piezo(87.4%) and MOPs(73.6%)were the top three interventions to improve the efficiency of canine tooth movement. When orthodontic treatment lasted for 2 months, Corti (75.7%), Piezo (69.6%) and LFV(58.9%)were the top three interventions for improving the mobility efficiency of canine tooth movement. When orthodontic treatment lasted for 3 months, Cort (73.3%), LLLT(68.4%)and LFV(60.8%)were the top three interventions for improving the mobility efficiency of canine tooth movement. Conclusion: PBMT and Piezo can improve the efficiency of canine tooth movement significantly after 1 month, while Corti and LFV can improve the efficiency of canine tooth movement better after 2 and 3 months.展开更多
Objective:To investigate the effect of puerarin on inflammation and alveolar bone resorption in rats with experimental periodontitis.Methods:Thirty-six 7-week-old Sprague-Dawley rats were randomly divided into three g...Objective:To investigate the effect of puerarin on inflammation and alveolar bone resorption in rats with experimental periodontitis.Methods:Thirty-six 7-week-old Sprague-Dawley rats were randomly divided into three groups(n=12).Twelve rats as the control group and the remaining rats were to establish a chronic periodontitis model ligated with orthodontic ligature wire on the cervical part of the left maxillary first molar under general anesthesia.All three groups were administered by gavage for 14 days:equal amounts of saline were given to the control and periodontitis groups,and 400 mg/kg concentration of puerarin was given to the puerarin group.All rats were anesthetized after 24 h of the last administration,blood was collected from the abdominal aorta,and the serum was centrifuged for the detection of IL-4,IL-10,IL-6,and IFN-γin peripheral blood,then all rats were executed,some rats separated from the left maxilla,fresh gingival tissue removed from the buccal-palatal side of the left maxillary first molar,and the remaining maxillary bone tissue used for the detection of Micro-CT;some rats subjected to the left maxillary bone specimens taken with the gingival tissues,used for HE staining detection.Results:HE staining showed that inflammatory cell infiltration was significantly reduced in the puerarin group compared to the periodontitis group.ELISA analysis showed that puerarin promoted IL-4 and IL-10 expression and decreased IL-6 and IFN-γexpression levels in serum(P<0.05).Micro-CT showed that puerarin significantly reduced alveolar bone resorption compared to the periodontitis group(P<0.05).Conclusion:Puerarin may inhibit inflammation and alveolar bone resorption in experimental periodontitis rats.展开更多
Background Reactive oxygen species （ROS） may play both physiological and pathophysiological roles. Transcription factor NF-E2-related factor 2 （Nrf2） regulates antioxidant response element （ARE）-mediated genes e...Background Reactive oxygen species （ROS） may play both physiological and pathophysiological roles. Transcription factor NF-E2-related factor 2 （Nrf2） regulates antioxidant response element （ARE）-mediated genes expression and coordinates induction of chemoprotective proteins in response to physical and chemical stresses. The exact role of Nrf2 in cellular responses to different levels of oxidative stresses remains unknown. Methods Rat pulmonary microvascular endothelial cells were cultured and treated with 0 mmol/L, 0.125 mmol/L, 0.25 mmol/L, 0.5 mmol/L, 1.0 mmol/L and 2.0 mmol/L hydrogen peroxide solution for 2 hours. Nrf2 gene expression was assayed by reverse transcription-PCR, Nrf2-ARE binding activity was assayed with electrophoretic mobility shift assay （EMSA）, and localization of Nrf2 was detected with immunohistochemistry. Results Low and moderate （0.125 mmol/L, 0.25 mmol/L and 0.5 mmol/L） doses hydrogen peroxide exposure of rat pulmonary microvascular endothelial cells led to the nuclear accumulation of Nrf2, increased activity of transcription regulation and up-regulation of ARE-medicated gene expression. In contrast, high doses of hydrogen peroxide （1 mmol/L 2 mmol/L） exposure of the cells led to the nuclear exclusion of Nrf2, decreased activity transcription regulation and down-regulation of ARE-mediated gene expression. Conclusion Low and moderate doses of hydrogen peroxide play protective roles by increasing transcription activity of Nrf2, whereas high- dose hydrogen peroxide plays a deleterious role by decreasing transcription activity of Nrf2.展开更多
基金Hainan Provincial Finance Fund for Science and Technology Program-2020 Hainan Province Key R&D Program for Social Developmen(No.ZDYF2020166)2023 Hainan Province Key R&D Program for Social Development(No.ZDYF2023SHFZ095)。
文摘Objective: To explore the effectiveness of various interventions in accelerating tooth movement, a systematic review and net-work meta analysis were used to draw a conclusion. Methods: MEDLINE, EMBASE, Willey Library, EBSCO, Web of Science Databases, and Cochrane Central Register of Controlled Trials databases to identify relevant studies. ADDIS 1.16.6 and Stata 16.0 software were used for NMA. Results: Five thousand five hundred and forty-two articles were searched out. After screening by two independent investigators, forty-seven randomized controlled trials, 1 390 participants, were included in this network meta-analysis. A total of 11 interventions involving Piezocision (Piezo), Photobiomodulation therapy (PBMT), Plate- let-rich plasma(PRP), Electromagnetic field(EF), Low intensity laser therapy(LLLT), Low intensity pulsed ultrasound(LI-PUS), Low-frequency vibrations(LFV), Distraction osteogenesis(DAD), Corticotomy(Corti), Microosteoperforations (MOPS), Traditional orthodontic(OT)were identified and classified into 3 classes including surgical treatment, non-surgical treatment and traditional orthodontic treatment. According to SUCRA probability ranking of the best intervention effect, when orthodontic treatment lasted for 1 month, PBMT (90.6%), Piezo(87.4%) and MOPs(73.6%)were the top three interventions to improve the efficiency of canine tooth movement. When orthodontic treatment lasted for 2 months, Corti (75.7%), Piezo (69.6%) and LFV(58.9%)were the top three interventions for improving the mobility efficiency of canine tooth movement. When orthodontic treatment lasted for 3 months, Cort (73.3%), LLLT(68.4%)and LFV(60.8%)were the top three interventions for improving the mobility efficiency of canine tooth movement. Conclusion: PBMT and Piezo can improve the efficiency of canine tooth movement significantly after 1 month, while Corti and LFV can improve the efficiency of canine tooth movement better after 2 and 3 months.
基金Hainan Provincial Financial Science and Technology Program Funded Project-Hainan Provincial Key Research and Development Social Development Project 2020(No.ZDYF2020166)Hainan Provincial Financial Science and Technology Program funded project-Hainan Provincial Key Research and Development Social Development Project 2023(No.ZDYF2023SHFZ095)。
文摘Objective:To investigate the effect of puerarin on inflammation and alveolar bone resorption in rats with experimental periodontitis.Methods:Thirty-six 7-week-old Sprague-Dawley rats were randomly divided into three groups(n=12).Twelve rats as the control group and the remaining rats were to establish a chronic periodontitis model ligated with orthodontic ligature wire on the cervical part of the left maxillary first molar under general anesthesia.All three groups were administered by gavage for 14 days:equal amounts of saline were given to the control and periodontitis groups,and 400 mg/kg concentration of puerarin was given to the puerarin group.All rats were anesthetized after 24 h of the last administration,blood was collected from the abdominal aorta,and the serum was centrifuged for the detection of IL-4,IL-10,IL-6,and IFN-γin peripheral blood,then all rats were executed,some rats separated from the left maxilla,fresh gingival tissue removed from the buccal-palatal side of the left maxillary first molar,and the remaining maxillary bone tissue used for the detection of Micro-CT;some rats subjected to the left maxillary bone specimens taken with the gingival tissues,used for HE staining detection.Results:HE staining showed that inflammatory cell infiltration was significantly reduced in the puerarin group compared to the periodontitis group.ELISA analysis showed that puerarin promoted IL-4 and IL-10 expression and decreased IL-6 and IFN-γexpression levels in serum(P<0.05).Micro-CT showed that puerarin significantly reduced alveolar bone resorption compared to the periodontitis group(P<0.05).Conclusion:Puerarin may inhibit inflammation and alveolar bone resorption in experimental periodontitis rats.
文摘Background Reactive oxygen species （ROS） may play both physiological and pathophysiological roles. Transcription factor NF-E2-related factor 2 （Nrf2） regulates antioxidant response element （ARE）-mediated genes expression and coordinates induction of chemoprotective proteins in response to physical and chemical stresses. The exact role of Nrf2 in cellular responses to different levels of oxidative stresses remains unknown. Methods Rat pulmonary microvascular endothelial cells were cultured and treated with 0 mmol/L, 0.125 mmol/L, 0.25 mmol/L, 0.5 mmol/L, 1.0 mmol/L and 2.0 mmol/L hydrogen peroxide solution for 2 hours. Nrf2 gene expression was assayed by reverse transcription-PCR, Nrf2-ARE binding activity was assayed with electrophoretic mobility shift assay （EMSA）, and localization of Nrf2 was detected with immunohistochemistry. Results Low and moderate （0.125 mmol/L, 0.25 mmol/L and 0.5 mmol/L） doses hydrogen peroxide exposure of rat pulmonary microvascular endothelial cells led to the nuclear accumulation of Nrf2, increased activity of transcription regulation and up-regulation of ARE-medicated gene expression. In contrast, high doses of hydrogen peroxide （1 mmol/L 2 mmol/L） exposure of the cells led to the nuclear exclusion of Nrf2, decreased activity transcription regulation and down-regulation of ARE-mediated gene expression. Conclusion Low and moderate doses of hydrogen peroxide play protective roles by increasing transcription activity of Nrf2, whereas high- dose hydrogen peroxide plays a deleterious role by decreasing transcription activity of Nrf2.
