Ankylosing spondylitis(AS)has a very high disability rate.How to effectively inhibit the formation of new bones has become a difficult point in clinical treatment.In recent years,research has shown that different trea...Ankylosing spondylitis(AS)has a very high disability rate.How to effectively inhibit the formation of new bones has become a difficult point in clinical treatment.In recent years,research has shown that different treatment plans can have an impact on inhibiting new bone formation.In this paper,the different effects of new bone formation in the treatment of AS with traditional Chinese and Western medicine are systematically listed.展开更多
Irisin is a polypeptide hormone derived from the proteolytic cleavage of fibronectin-type III domain- containing 5 （FNDC5） protein. Once released to circulation upon exercise or cold exposure, irisin stimulates brow...Irisin is a polypeptide hormone derived from the proteolytic cleavage of fibronectin-type III domain- containing 5 （FNDC5） protein. Once released to circulation upon exercise or cold exposure, irisin stimulates browning of white adipose tissue （WAT） and uncoupling protein I （UCP1） expression, leading to an increase in total body energy expenditure by augmented UCPl-mediated thermogenesis. It is currently unknown whether irisin is secreted by bone upon exercise or whether it regulates bone metabolism in vivo. In this study, we found that 2 weeks of voluntary wheel-running exercise induced high levels of FNDC5 messenger RNA as well as FNDC5/irisin protein expression in murine bone tissues. Increased immunoreactivity due to exercise-induced FNDC5/irisin expression was detected in different regions of exercised femoral bones, including growth plate, trabecular bone, cortical bone, articular cartilage, and bone-tendon interface. Exercise also increased expression of osteogenic markers in bone and that of UCP1 in WAT, and led to bodyweight loss. Irisin intraperitoneal （IP） administration resulted in increased trabecular and cortical bone thickness and osteoblasts numbers, and concurrently induced UCP1 expression in subcutaneous WAT. Lentiviral FNDC5 IP administration increased cortical bone thickness. In vitro studies in bone cells revealed irisin increases osteoblastogenesis and mineralization, and inhibits receptor activator of nuclear factor-kB ligand （RANKL）- induced osteoclastogenesis. Taken together, our findings show that voluntary exercise increases irisin production in bone, and that an increase in circulating irisin levels enhances osteogenesis in mice.展开更多
Daily 20-mg and once-weekly 56.5-mg teriparatide（parathyroid hormone 1–34） treatment regimens increase bone mineral density（BMD） and prevent fractures, but changes in bone turnover markers differ between the two ...Daily 20-mg and once-weekly 56.5-mg teriparatide（parathyroid hormone 1–34） treatment regimens increase bone mineral density（BMD） and prevent fractures, but changes in bone turnover markers differ between the two regimens. The aim of the present study was to explain changes in bone turnover markers using once-weekly teriparatide with a simulation model. Temporary increases in bone formation markers and subsequent decreases were observed during once-weekly teriparatide treatment for 72 weeks. These observations support the hypothesis that repeated weekly teriparatide administration stimulates bone remodeling, replacing old bone with new bone and leading to a reduction in the active remodeling surface. A simulation model was developed based on the iterative remodeling cycle that occurs on residual old bone. An increase in bone formation and a subsequent decrease were observed in the preliminary simulation. For each fitted time point, the predicted value was compared to the absolute values of the bone formation and resorption markers and lumbar BMD. The simulation model strongly matched actual changes in bone turnover markers and BMD. This simulation model indicates increased bone formation marker levels in the early stage and a subsequent decrease. It is therefore concluded that remodeling-based bone formation persisted during the entire treatment period with once-weekly teriparatide.展开更多
激素性股骨头坏死(steroid-induced necrosis of the femoral head, SNOFH)是骨科常见难治性疾病,又被视为“不死癌症”,若不及时干预将导致患者面临人工全髋关节置换术的风险。近些年研究证实,“成骨-成血管耦联”途径研究SNOFH发生发...激素性股骨头坏死(steroid-induced necrosis of the femoral head, SNOFH)是骨科常见难治性疾病,又被视为“不死癌症”,若不及时干预将导致患者面临人工全髋关节置换术的风险。近些年研究证实,“成骨-成血管耦联”途径研究SNOFH发生发展的机制具有重要意义。SNOFH中医病机责之于脾肾亏虚为本,瘀血为病,痰阻为渐,毒聚为损。“成骨-成血管耦联”机制与“瘀去-新生-骨合”中医理论存在高度契合性。越来越多的临床证据表明中医药治疗SNOFH不仅具有疗效显著、不良反应小、价格低廉等优势,还能提高患者生存质量,为促进股骨头血管重建与再生以及股骨头坏死骨修复等发挥重要作用。基于“瘀去-新生-骨合”理论,临床上多采用补肾活血类中药及中药复方用于SNOFH防治,运用“成骨”之健脾补肾药,“成血管”之活血化瘀药,祛除“抑制因素”之化痰药、祛湿药,有步骤、有层次的治疗SNOFH取得显著效果。因此,从“成骨-成血管耦联”角度探讨SNOFH中医药干预的科学内涵已成为当今研究新热点,能够为后续SNOFH的防治研究和新药研发提供理论参考和借鉴。展开更多
To study the new bone formation in the bone defect area after implantation, the tetracycline tracing method was used. The results show that new bone formed in 1 month, and the formation rate of new bone was very high ...To study the new bone formation in the bone defect area after implantation, the tetracycline tracing method was used. The results show that new bone formed in 1 month, and the formation rate of new bone was very high (8.164μm/day),considerably faster than that of control groups (3.219μm/day).The new bone grew up quickly and β-TCP particles were surrounded by double fluorescence bands which became more obvious. The new bone formation rate was maximal at 2 months, and then gradually reduced. The rate was steady at 4 months, and then reduced to resembling as the normal physiologic metabolism of bone, which indicated the implanted materials were completely replaced by bone. Calcium phosphate materials had the ability of osteoconduction.展开更多
经过40余年临床应用与不断发展,引导骨组织再生术(guided bone regeneration,GBR)已被证明是一种可靠的牙槽骨骨增量技术。GBR技术在应用过程中的核心要素是充足的血供和稳定的环境。但现有GBR技术都是在“以血供为核心”的理论体系下...经过40余年临床应用与不断发展,引导骨组织再生术(guided bone regeneration,GBR)已被证明是一种可靠的牙槽骨骨增量技术。GBR技术在应用过程中的核心要素是充足的血供和稳定的环境。但现有GBR技术都是在“以血供为核心”的理论体系下进行的,缺乏对稳定要素重要性的重视。我们通过文献阅读及系列临床试验,提出“以稳定为核心”的牙槽骨修复重建理念。基于新理念,创建了以单纯人工骨粉修复牙槽骨重度缺损的治疗新术式,革新了国际上必须用自体骨修复骨缺损的治疗理念。本文将从GBR技术的历史发展轨迹中寻找稳定的重要性,结合现有骨再生理论,详细阐述“以稳定为核心”的牙槽骨修复重建治疗新技术。展开更多
目的探讨超声微泡破碎技术介导增强型绿色荧光蛋白(enhanced green fluorescent protein,EGFP)基因在兔骨缺损处转染时,不同途径注射质粒微泡混悬液对转染效率及局部组织的影响。方法3月龄新西兰大白兔10只,制备右尺骨骨缺损模型,按照...目的探讨超声微泡破碎技术介导增强型绿色荧光蛋白(enhanced green fluorescent protein,EGFP)基因在兔骨缺损处转染时,不同途径注射质粒微泡混悬液对转染效率及局部组织的影响。方法3月龄新西兰大白兔10只,制备右尺骨骨缺损模型,按照随机数字表法分为静脉组和断端间组(n=5)。静脉组和断端间组造模后第10天分别经耳缘静脉或骨缺损断端间向兔体内注射携带EGFP基因的质粒微泡混悬液(0.3 ml/kg)。在超声频率1 MHz,超声强度1.0 W/cm^(2),占空比20%条件下,对两组骨缺损部位超声辐照1 min,进行EGFP基因转染。在基因转染后1周时处死兔,于骨缺损处获取标本制作切片,荧光染色观察各组EGFP表达情况。采用病理图像分析软件分析计算平均光密度。HE染色观察断端间软组织病理特点。结果静脉组和断端间组均观察到绿色荧光蛋白表达。断端间组平均光密度高于静脉组,差异有统计学意义(0.0345±0.0028 vs 0.0004±0.0001,P<0.05)。表达绿色荧光蛋白的细胞主要为骨骼肌细胞,各组未见细胞坏死征象。结论超声微泡破碎技术介导EGFP基因在兔骨缺损处转染时,其效率受不同途径注射质粒微泡混悬液的影响,骨缺损断端间直接注射优于静脉注射。展开更多
基金Supported by the National Natural Science Foundation of China(82205105).
文摘Ankylosing spondylitis(AS)has a very high disability rate.How to effectively inhibit the formation of new bones has become a difficult point in clinical treatment.In recent years,research has shown that different treatment plans can have an impact on inhibiting new bone formation.In this paper,the different effects of new bone formation in the treatment of AS with traditional Chinese and Western medicine are systematically listed.
基金supported by a R01DE21464 through the National Institutes of Healthan Innovation in Oral Care Award through International Association for Dental Research and Glaxo Smith Kline Consumer Healthcare+2 种基金an Award through International Team of Implantology to JCby GZUCM Science Fund for Creative Research Groups(2016KYTD10)GZUCM Torch Program(A1-AFD015142Z08)to JZ
文摘Irisin is a polypeptide hormone derived from the proteolytic cleavage of fibronectin-type III domain- containing 5 （FNDC5） protein. Once released to circulation upon exercise or cold exposure, irisin stimulates browning of white adipose tissue （WAT） and uncoupling protein I （UCP1） expression, leading to an increase in total body energy expenditure by augmented UCPl-mediated thermogenesis. It is currently unknown whether irisin is secreted by bone upon exercise or whether it regulates bone metabolism in vivo. In this study, we found that 2 weeks of voluntary wheel-running exercise induced high levels of FNDC5 messenger RNA as well as FNDC5/irisin protein expression in murine bone tissues. Increased immunoreactivity due to exercise-induced FNDC5/irisin expression was detected in different regions of exercised femoral bones, including growth plate, trabecular bone, cortical bone, articular cartilage, and bone-tendon interface. Exercise also increased expression of osteogenic markers in bone and that of UCP1 in WAT, and led to bodyweight loss. Irisin intraperitoneal （IP） administration resulted in increased trabecular and cortical bone thickness and osteoblasts numbers, and concurrently induced UCP1 expression in subcutaneous WAT. Lentiviral FNDC5 IP administration increased cortical bone thickness. In vitro studies in bone cells revealed irisin increases osteoblastogenesis and mineralization, and inhibits receptor activator of nuclear factor-kB ligand （RANKL）- induced osteoclastogenesis. Taken together, our findings show that voluntary exercise increases irisin production in bone, and that an increase in circulating irisin levels enhances osteogenesis in mice.
文摘Daily 20-mg and once-weekly 56.5-mg teriparatide（parathyroid hormone 1–34） treatment regimens increase bone mineral density（BMD） and prevent fractures, but changes in bone turnover markers differ between the two regimens. The aim of the present study was to explain changes in bone turnover markers using once-weekly teriparatide with a simulation model. Temporary increases in bone formation markers and subsequent decreases were observed during once-weekly teriparatide treatment for 72 weeks. These observations support the hypothesis that repeated weekly teriparatide administration stimulates bone remodeling, replacing old bone with new bone and leading to a reduction in the active remodeling surface. A simulation model was developed based on the iterative remodeling cycle that occurs on residual old bone. An increase in bone formation and a subsequent decrease were observed in the preliminary simulation. For each fitted time point, the predicted value was compared to the absolute values of the bone formation and resorption markers and lumbar BMD. The simulation model strongly matched actual changes in bone turnover markers and BMD. This simulation model indicates increased bone formation marker levels in the early stage and a subsequent decrease. It is therefore concluded that remodeling-based bone formation persisted during the entire treatment period with once-weekly teriparatide.
文摘激素性股骨头坏死(steroid-induced necrosis of the femoral head, SNOFH)是骨科常见难治性疾病,又被视为“不死癌症”,若不及时干预将导致患者面临人工全髋关节置换术的风险。近些年研究证实,“成骨-成血管耦联”途径研究SNOFH发生发展的机制具有重要意义。SNOFH中医病机责之于脾肾亏虚为本,瘀血为病,痰阻为渐,毒聚为损。“成骨-成血管耦联”机制与“瘀去-新生-骨合”中医理论存在高度契合性。越来越多的临床证据表明中医药治疗SNOFH不仅具有疗效显著、不良反应小、价格低廉等优势,还能提高患者生存质量,为促进股骨头血管重建与再生以及股骨头坏死骨修复等发挥重要作用。基于“瘀去-新生-骨合”理论,临床上多采用补肾活血类中药及中药复方用于SNOFH防治,运用“成骨”之健脾补肾药,“成血管”之活血化瘀药,祛除“抑制因素”之化痰药、祛湿药,有步骤、有层次的治疗SNOFH取得显著效果。因此,从“成骨-成血管耦联”角度探讨SNOFH中医药干预的科学内涵已成为当今研究新热点,能够为后续SNOFH的防治研究和新药研发提供理论参考和借鉴。
文摘To study the new bone formation in the bone defect area after implantation, the tetracycline tracing method was used. The results show that new bone formed in 1 month, and the formation rate of new bone was very high (8.164μm/day),considerably faster than that of control groups (3.219μm/day).The new bone grew up quickly and β-TCP particles were surrounded by double fluorescence bands which became more obvious. The new bone formation rate was maximal at 2 months, and then gradually reduced. The rate was steady at 4 months, and then reduced to resembling as the normal physiologic metabolism of bone, which indicated the implanted materials were completely replaced by bone. Calcium phosphate materials had the ability of osteoconduction.
文摘经过40余年临床应用与不断发展,引导骨组织再生术(guided bone regeneration,GBR)已被证明是一种可靠的牙槽骨骨增量技术。GBR技术在应用过程中的核心要素是充足的血供和稳定的环境。但现有GBR技术都是在“以血供为核心”的理论体系下进行的,缺乏对稳定要素重要性的重视。我们通过文献阅读及系列临床试验,提出“以稳定为核心”的牙槽骨修复重建理念。基于新理念,创建了以单纯人工骨粉修复牙槽骨重度缺损的治疗新术式,革新了国际上必须用自体骨修复骨缺损的治疗理念。本文将从GBR技术的历史发展轨迹中寻找稳定的重要性,结合现有骨再生理论,详细阐述“以稳定为核心”的牙槽骨修复重建治疗新技术。
文摘目的探讨超声微泡破碎技术介导增强型绿色荧光蛋白(enhanced green fluorescent protein,EGFP)基因在兔骨缺损处转染时,不同途径注射质粒微泡混悬液对转染效率及局部组织的影响。方法3月龄新西兰大白兔10只,制备右尺骨骨缺损模型,按照随机数字表法分为静脉组和断端间组(n=5)。静脉组和断端间组造模后第10天分别经耳缘静脉或骨缺损断端间向兔体内注射携带EGFP基因的质粒微泡混悬液(0.3 ml/kg)。在超声频率1 MHz,超声强度1.0 W/cm^(2),占空比20%条件下,对两组骨缺损部位超声辐照1 min,进行EGFP基因转染。在基因转染后1周时处死兔,于骨缺损处获取标本制作切片,荧光染色观察各组EGFP表达情况。采用病理图像分析软件分析计算平均光密度。HE染色观察断端间软组织病理特点。结果静脉组和断端间组均观察到绿色荧光蛋白表达。断端间组平均光密度高于静脉组,差异有统计学意义(0.0345±0.0028 vs 0.0004±0.0001,P<0.05)。表达绿色荧光蛋白的细胞主要为骨骼肌细胞,各组未见细胞坏死征象。结论超声微泡破碎技术介导EGFP基因在兔骨缺损处转染时,其效率受不同途径注射质粒微泡混悬液的影响,骨缺损断端间直接注射优于静脉注射。
