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含透明质酸钠无机牛骨植骨块和Bio-Oss collagen■用于牙槽嵴保存效果的研究 被引量:6
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作者 宋子健 丁宇翔 周勤 《实用口腔医学杂志》 CAS CSCD 北大核心 2021年第6期768-772,共5页
目的:对比含透明质酸钠无机牛骨植骨块与Bio-Oss collagen■用于牙槽嵴保存的效果。方法:纳入拔除单颗上颌或下颌第一磨牙的患者80例,随机分为2组(n=40),将含透明质酸钠无机牛骨植骨块(试验组)和Bio-Oss collagen■(对照组)分别植入拔... 目的:对比含透明质酸钠无机牛骨植骨块与Bio-Oss collagen■用于牙槽嵴保存的效果。方法:纳入拔除单颗上颌或下颌第一磨牙的患者80例,随机分为2组(n=40),将含透明质酸钠无机牛骨植骨块(试验组)和Bio-Oss collagen■(对照组)分别植入拔于牙窝内,Bio-Gide■可吸收膜覆盖创面,术后即刻及24周拍摄CBCT,评价牙槽嵴宽度和高度的变化;术后第12周、24周复诊,观察软硬组织愈合情况,比较两种植骨材料牙槽嵴保存的效果。结果:大体观察结果试验组和对照组均表现良好结果,未发生感染、排斥等反应。CBCT结果显示试验组和对照组的牙槽嵴高度和宽度得到了较好保存,牙槽嵴高度和宽度的减少量无统计学差异(P>0.05)。结论:含透明质酸钠无机牛骨植骨块植骨材料能有效地保存拔牙后牙槽嵴的骨量。 展开更多
关键词 含透明质酸钠无机牛骨植骨块 bio-oss collagen■ 牙槽嵴保存术 牙槽骨缺损
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CGF联合Bio-Oss材料在上颌窦底提升术同期种植修复中的应用
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作者 刘云 王瑞春 关振群 《中国美容医学》 CAS 2024年第10期142-146,共5页
目的:探讨浓缩生长因子(Concentrated growth factor,CGF)联合Bio-Oss材料在改良经牙槽嵴顶上颌窦底提升术种植治疗中的应用价值。方法:选取笔者医院2018年5月-2021年12月口腔门诊采用改良经牙槽嵴顶上颌窦底提升术后同期接受种植治疗... 目的:探讨浓缩生长因子(Concentrated growth factor,CGF)联合Bio-Oss材料在改良经牙槽嵴顶上颌窦底提升术种植治疗中的应用价值。方法:选取笔者医院2018年5月-2021年12月口腔门诊采用改良经牙槽嵴顶上颌窦底提升术后同期接受种植治疗的98例患者作为研究对象,采用随机数字表法分为两组。对照组:49例,患者术中植入Bio-Oss骨填充材料;联合组:49例,患者术中植入CGF联合Bio-Oss的骨填充材料,对比两组患者术后不同时间新形成的骨密度,种植体植入前后患者牙周健康指标及种植体的稳定性差异。结果:术前,两组患者牙槽骨密度HU值比较差异无统计学意义(P>0.05);术后3个月、6个月,联合组的牙槽骨密度HU值均低于对照组,差异具有统计学意义(P<0.05);术后1个月、3个月、6个月、12个月时,联合组龈沟液出血指数与对照组比较,差异无统计学意义(P>0.05);术后1个月、3个月,联合组的牙周探诊深度与对照组比较,差异无统计学意义(P>0.05);术后6个月、12个月,联合组的牙周探诊深度小于对照组(P<0.05);术后6个月、12个月,联合组植入体的植入扭矩值与对照组比较,差异无统计学意义(P>0.05);术后12个月,联合组的种植体稳定系数大于对照组(P<0.05)。结论:改良经牙槽嵴顶上颌窦底提升术后行同期种植修复治疗中,植入CGF联合Bio-Oss的骨填充材料对于促进早期牙槽骨成骨能力形成及提高种植体植入稳定性较单纯Bio-Oss填充材料更有优势。 展开更多
关键词 浓缩生长因子 bio-oss材料 牙槽嵴顶 上颌窦底提升术 种植
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利用Bio-Oss Collagen进行上颌磨牙拔除后拔牙位点保存的临床分析 被引量:7
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作者 于久越 贾雯昊 +4 位作者 方丽 王健 李江明 刘晗 郭启利 《中国口腔种植学杂志》 2023年第2期90-96,共7页
目的探讨上颌磨牙拔除后,利用Bio-OssCollagen进行拔牙位点保存的临床治疗方法。方法回顾分析采用Bio-OssCollagen进行上颌磨牙拔牙位点保存6名拔牙患者的临床资料。该6例为患牙因牙周炎或牙周牙髓联合病变导致根分叉区域牙槽骨破坏需... 目的探讨上颌磨牙拔除后,利用Bio-OssCollagen进行拔牙位点保存的临床治疗方法。方法回顾分析采用Bio-OssCollagen进行上颌磨牙拔牙位点保存6名拔牙患者的临床资料。该6例为患牙因牙周炎或牙周牙髓联合病变导致根分叉区域牙槽骨破坏需要拔除,牙拔除后牙槽嵴顶中央剩余骨高度不足3.5mm,但颊舌侧及近远中有接近完整骨壁的病例。拔牙后彻底刮除牙槽窝内肉芽组织,在牙槽窝内植入Bio-OssCollagen,交叉缝合牙龈固定移植物,术后7~10天拆线。分别在术前、术后即刻及术后6个月时拍摄CBCT,使用Mimics20.0测量冠状位颊舌侧及正中、矢状位近远中及正中剩余牙槽嵴顶高度5个位点的垂直高度。结果6名患者拔牙后均一期愈合。拔牙后6个月复查,牙槽窝愈合良好,牙龈颜色质地正常,附着龈宽度无变化。CBCT见测量5个位点中,颊舌侧及近远中位点牙槽嵴顶高度无变化或有少量增高,正中位点牙槽嵴顶高度增加了3.48~7.89mm。结论上颌患牙拔除后,若周围骨壁高度足够,采用Bio-OssCollagen进行拔牙位点保存的方法可行,该方法损伤小、操作时间短,可以取得与传统拔牙位点保存相近的结果。 展开更多
关键词 拔牙位点保存 骨胶原 上颌磨牙 拔牙 种植
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牙种植同步植入Bio-Oss骨粉对牙槽骨骨量缺失患者临床效果的观察
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作者 顾春梅 袁平丽 +1 位作者 马文杰 汪青风 《口腔材料器械杂志》 2024年第3期183-187,共5页
目的探讨牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉的效果。方法采用回顾性分析2021年1月至2023年1月我院收治的牙槽骨骨量缺失患者104例,根据种植方式分为对照组和试验组,各52例。对照组实施单纯牙种植体植入,在缺失的牙... 目的探讨牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉的效果。方法采用回顾性分析2021年1月至2023年1月我院收治的牙槽骨骨量缺失患者104例,根据种植方式分为对照组和试验组,各52例。对照组实施单纯牙种植体植入,在缺失的牙槽骨内植入合适的螺纹植入物,试验组在此基础上同步植入Bio-Oss骨粉覆盖。参照中国卫生部制定的标准评价术后6个月疗效,并对比两组手术前后感觉神经动作电位(SNAP)测量结果、生活质量及术后各时期新生骨厚度、骨密度变化情况。结果试验组临床总有效率为98.08%(51/52),高于对照组的84.62%(44/52)(P<0.05);试验组术后6个月10 mV、50 mV、100 mV、1000 mV值均高于对照组(P<0.05);试验组术后6个月的生理功能、社会功能、情感职能、精神健康、活力评分均高于对照组(P<0.05);试验组术后1个月、3个月的新生骨厚度高于对照组,术后1个月、3个月、6个月的新生骨密度高于对照组(P<0.05)。结论牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉可提高临床疗效,改善神经功能及生活质量,促进新骨形成。 展开更多
关键词 牙槽骨骨量缺失 牙种植 bio-oss 骨粉 疗效 神经功能 生活质量
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Calcium-chelating peptides from rabbit bone collagen:characterization,identification and mechanism elucidation 被引量:2
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作者 Fuhuan Yuan Yu Fu +8 位作者 Liang Ma Hankun Zhu Yong Yu Xin Feng Yi Sun Hongjie Dai Xin Liu Zhengfang Liu Yuhao Zhang 《Food Science and Human Wellness》 SCIE CSCD 2024年第3期1485-1493,共9页
This study aimed to characterize and identify calcium-chelating peptides from rabbit bone collagen and explore the underlying chelating mechanism.Collagen peptides and calcium were extracted from rabbit bone by instan... This study aimed to characterize and identify calcium-chelating peptides from rabbit bone collagen and explore the underlying chelating mechanism.Collagen peptides and calcium were extracted from rabbit bone by instant ejection steam explosion(ICSE)combined with enzymatic hydrolysis,followed by chelation reaction to prepare rabbit bone peptide-calcium chelate(RBCP-Ca).The chelating sites were further analyzed by liquid chromatography-tandem mass(LC-MS/MS)spectrometry while the chelating mechanism and binding modes were investigated.The structural characterization revealed that RBCP successfully chelated with calcium ions.Furthermore,LC-MS/MS analysis indicated that the binding sites included both acidic amino acids(Asp and Glu)and basic amino acids(Lys and Arg),Interestingly,three binding modes,namely Inter-Linking,Loop-Linking and Mono-Linking were for the first time found,while Inter-Linking mode accounted for the highest proportion(75.1%),suggesting that chelation of calcium ions frequently occurred between two peptides.Overall,this study provides a theoretical basis for the elucidation of chelation mechanism of calcium-chelating peptides. 展开更多
关键词 Rabbit bone collagen peptide Peptide-calcium chelate Chelation mechanism Liquid chromatography-tandem mass(LC-MS/MS)
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浓缩生长因子联合Bio-Oss骨粉修复拔牙术后牙槽骨缺损对牙槽嵴高度和牙槽嵴宽度的影响
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作者 王冬英 刘祎华 李玉梅 《当代医药论丛》 2024年第24期74-76,共3页
目的:探讨拔牙术后采用浓缩生长因子(CGF)联合Bio-Oss骨粉修复牙槽骨缺损对牙槽嵴高度和牙槽嵴宽度的影响。方法:本研究选自内蒙古民族大学附属医院,时间为:2021年8月至2023年8月,将收治的80例拔牙术后牙槽骨缺损患者作为研究对象,按修... 目的:探讨拔牙术后采用浓缩生长因子(CGF)联合Bio-Oss骨粉修复牙槽骨缺损对牙槽嵴高度和牙槽嵴宽度的影响。方法:本研究选自内蒙古民族大学附属医院,时间为:2021年8月至2023年8月,将收治的80例拔牙术后牙槽骨缺损患者作为研究对象,按修复方式分为两组。对照组(n=40)采用Bio-Oss骨粉修复,观察组(n=40)增加CGF。比较两组牙槽嵴高度及宽度、愈合情况、牙槽骨密度、不良反应。结果:术后1个月、3个月两组牙槽嵴高度、宽度比较,观察组均比对照组高;术后,观察组伤口甲级、乙级愈合率均比对照组高,丙级愈合率比对照组低;术后1个月、3个月两组牙槽骨密度均有所升高,观察组高于对照组,观察组不良反应发生率低于对照组,以上对比,差异均具有统计学意义(P均<0.05)。结论:CGF联合Bio-Oss骨粉修复能够帮助拔牙术后牙槽骨缺损患者提高其促新骨形成能力,提高愈合效果,且具有较高的安全性。 展开更多
关键词 CGF bio-oss骨粉 拔牙术 牙槽骨缺损 牙槽嵴高度 牙槽嵴宽度
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Corneal collagen cross-linking in patients with keratoconus from the Dresden protocol to customized solutions:theoretical basis 被引量:1
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作者 Ciro Caruso Luca D’Andrea +4 位作者 Mario Troisi Michele Rinaldi Raffaele Piscopo Salvatore Troisi Ciro Costagliola 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第5期951-962,共12页
Keratoconus is an ectatic condition characterized by gradual corneal thinning,corneal protrusion,progressive irregular astigmatism,corneal fibrosis,and visual impairment.The therapeutic options regarding improvement o... Keratoconus is an ectatic condition characterized by gradual corneal thinning,corneal protrusion,progressive irregular astigmatism,corneal fibrosis,and visual impairment.The therapeutic options regarding improvement of visual function include glasses or soft contact lenses correction for initial stages,gas-permeable rigid contact lenses,scleral lenses,implantation of intrastromal corneal ring or corneal transplants for most advanced stages.In keratoconus cases showing disease progression corneal collagen crosslinking(CXL)has been proven to be an effective,minimally invasive and safe procedure.CXL consists of a photochemical reaction of corneal collagen by riboflavin stimulation with ultraviolet A radiation,resulting in stromal crosslinks formation.The aim of this review is to carry out an examination of CXL methods based on theoretical basis and mathematical models,from the original Dresden protocol to the most recent developments in the technique,reporting the changes proposed in the last 15y and examining the advantages and disadvantages of the various treatment protocols.Finally,the limits of non-standardized methods and the perspectives offered by a customization of the treatment are highlighted. 展开更多
关键词 corneal collagen cross linking KERATOCONUS custom fast protocol Dresden protocol lambert-beer law Bunsen-roscoe law
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Anti-skin aging effects and bioavailability of collagen tripeptide and elastin peptide formulations in young and middle-aged women 被引量:1
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作者 Shan Lu Silu Zhang +3 位作者 Yun Wang Jiayi Ni Tiantian Zhao Guoxun Xiao 《Journal of Dermatologic Science and Cosmetic Technology》 2024年第2期26-37,共12页
Background:Collagen peptides(CP),including tripeptides and elastin peptides(EP),are known for their in vitro and in vivo anti-skin aging effects.Despite positive results in animal models,the combination effects of CP ... Background:Collagen peptides(CP),including tripeptides and elastin peptides(EP),are known for their in vitro and in vivo anti-skin aging effects.Despite positive results in animal models,the combination effects of CP and EP and the bioavailability of CP in human studies,particularly in young and middle-aged women,remain underexplored.Objective:To evaluate the effects of an orally administered collagen drink combining CP and EP on the skin health of young and middle-aged women.Materials and Methods:A single-center,randomized,double-blind,parallel-controlled trial was conducted,utilizing the WONDERLABR fish collagen tripeptide beverage.Participants consumed the drink over an 8-week period.Results:Compared to the placebo group,the collagen drink group showed significant improvements in skin hydration(39.19%increase),transepidermal water loss(33.45%decrease),skin elasticity(25.37%increase),dermal collagen content(21.64%increase),pore size(7.94%decrease),wrinkle length(18.09%decrease),skin smoothness(2.85%improvement),and skin roughness(15.32%decrease).Overall pore volume decreased by 60%,and visual assessments indicated a decrease in skin luminosity by 15.20%and smoothness index by 22.55%.Mass spectrometry demonstrated a significant increase in collagen efficacy components,including blood pH and GPH levels(P<0.05).Conclusion:The study confirmed the combination nourishing and anti-skin aging effects of EP and CP on the skin of young and middle-aged women,demonstrating significant improvements in various skin parameters and good bioavailability of collagen peptides. 展开更多
关键词 collagen tripeptides Elastin peptides ANTI-AGING Skin protection Peptide absorption
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Estimation of cancer cell migration in biomimetic random/oriented collagen fiber microenvironments
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作者 姚静如 李国强 +8 位作者 姚喜耀 周连杰 叶志凯 刘艳平 郑栋天 唐婷 宋克纳 陈果 刘雳宇 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第5期749-756,共8页
Increasing data indicate that cancer cell migration is regulated by extracellular matrixes and their surrounding biochemical microenvironment,playing a crucial role in pathological processes such as tumor invasion and... Increasing data indicate that cancer cell migration is regulated by extracellular matrixes and their surrounding biochemical microenvironment,playing a crucial role in pathological processes such as tumor invasion and metastasis.However,conventional two-dimensional cell culture and animal models have limitations in studying the influence of tumor microenvironment on cancer cell migration.Fortunately,the further development of microfluidic technology has provided solutions for the study of such questions.We utilize microfluidic chip to build a random collagen fiber microenvironment(RFM)model and an oriented collagen fiber microenvironment(OFM)model that resemble early stage and late stage breast cancer microenvironments,respectively.By combining cell culture,biochemical concentration gradient construction,and microscopic imaging techniques,we investigate the impact of different collagen fiber biochemical microenvironments on the migration of breast cancer MDA-MB-231-RFP cells.The results show that MDA-MB-231-RFP cells migrate further in the OFM model compared to the RFM model,with significant differences observed.Furthermore,we establish concentration gradients of the anticancer drug paclitaxel in both the RFM and OFM models and find that paclitaxel significantly inhibits the migration of MDA-MB-231-RFP cells in the RFM model,with stronger inhibition on the high concentration side compared to the low concentration side.However,the inhibitory effect of paclitaxel on the migration of MDA-MB-231-RFP cells in the OFM model is weak.These findings suggest that the oriented collagen fiber microenvironment resembling the late-stage tumor microenvironment is more favorable for cancer cell migration and that the effectiveness of anticancer drugs is diminished.The RFM and OFM models constructed in this study not only provide a platform for studying the mechanism of cancer development,but also serve as a tool for the initial measurement of drug screening. 展开更多
关键词 microfluidic chip random collagen fiber microenvironment(RFM) oriented collagen fiber microenvironment(OFM) cancer cell migration
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TGF-β1和Collagen-Ⅲ在牦牛感染细粒棘球蚴肝纤维化中的表达
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作者 陈欣怡 严得刚 +5 位作者 梁宏 李菊英 加央次仁 王登云 赵海龙 唐文强 《动物医学进展》 北大核心 2024年第4期45-50,共6页
研究转化生长因子β1(TGF-β1)、Ⅲ型胶原(Collagen-Ⅲ)在牦牛感染细粒棘球蚴导致肝纤维化中的表达及其意义。收集西藏地区40例细粒棘球蚴感染的牦牛肝组织和血清样本,同时收集未感染的肝组织和血清进行对照。采用苏木素-伊红(HE)染色... 研究转化生长因子β1(TGF-β1)、Ⅲ型胶原(Collagen-Ⅲ)在牦牛感染细粒棘球蚴导致肝纤维化中的表达及其意义。收集西藏地区40例细粒棘球蚴感染的牦牛肝组织和血清样本,同时收集未感染的肝组织和血清进行对照。采用苏木素-伊红(HE)染色法和天狼猩红染色法观察牦牛肝脏病理变化和肝纤维化程度;酶联免疫吸附试验(ELISA)和免疫组化法(IHA)分别检测肝组织和血清中TGF-β1、Collagen-Ⅲ的表达水平及分布;RT-PCR检测肝细胞内TGF-β1和Collagen-Ⅲ基因mRNA的相对表达水平。HE染色和天狼猩红染色结果显示,与未感染细粒棘球蚴病牦牛肝组织相比,感染棘球蚴周围的肝组织肝界板细胞破坏,呈虫蚀状,感染肝组织外围纤维化,细粒棘球蚴寄生的牦牛肝脏组织引起组织增生,纤维化;ELISA结果显示感染细粒棘球蚴牦牛血清样中细胞因子TGF-β1、Collagen-Ⅲ的含量明显超过未感染组(P<0.05),且免疫组化的结果显示它们的表达主要存在于细胞基质中;RT-PCR显示细粒棘球蚴感染肝组织中TGF-β1、Collagen-Ⅲ的mRNA相对表达量超出未感染组(P<0.05)。结果表明,细粒棘球蚴感染期间TGF-β1、Collagen-Ⅲ在细粒棘球蚴感染引起的肝纤维化中起重要作用。 展开更多
关键词 转化生长因子Β1 Ⅲ型胶原 细粒棘球蚴病 肝纤维化
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Preparation,characterization and antioxidant activity analysis of three Maillard glycosylated bone collagen hydrolysates from chicken,porcine and bovine
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作者 Liwei Qi Hongru Zhang +2 位作者 Yujie Guo Hong Liu Chunhui Zhang 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第4期2002-2013,共12页
Bone collagen hydrolysates(peptides)derived from byproduct of animal product processing have been used to produce commercially valuable products due to their potential antioxidant activity.Maillard glycosylated reacti... Bone collagen hydrolysates(peptides)derived from byproduct of animal product processing have been used to produce commercially valuable products due to their potential antioxidant activity.Maillard glycosylated reaction is considered as a promising method to enhance the antioxidant activity of peptides.Hence,this research aims at investigating the Maillard glycosylation activity and antioxidant activity of bone collagen hydrolysates from different sources.In this study,3 glycosylated bone collagen hydrolysates were prepared and characterized,and cytotoxicity and antioxidant activity were analyzed and evaluated.The free amino groups loss,browning intensity,and fluorescence intensity of G-Cbcp(glycosylated chicken bone collagen hydrolysates(peptides))were the heaviest,followed by G-Pbcp(glycosylated porcine bone collagen hydrolysates(peptides))and G-Bbcp(glycosylated bovine bone collagen hydrolysates(peptides)).The results of amino acid analysis showed that amino acid composition of different bone collagen hydrolysates was significantly different and the amino acid decreased to different degrees after Maillard glycosylated reaction,which may lead to differences in Maillard glycosylated reaction activity.Furthermore,the 3 glycosylated hydrolysates showed no significant cytotoxicity.The results showed that glycosylation process significantly increased the antioxidant activity of bone collagen hydrolysates,and G-Cbcp showed the strongest antioxidant activity,followed by G-Pbcp and G-Bbcp.Therefore,compared with the bone collagen hydrolysates,3 glycosylated hydrolysates showed significant characteristic and structural changes,and higher antioxidant activity. 展开更多
关键词 Bone collagen hydrolysates Glycosylation reaction Antioxidant activity
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Molecular mechanism of hypoxia and alpha-ketoglutaric acid on collagen expression in scleral fibroblasts
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作者 Yun Sun Zhuo-Zheng Li +7 位作者 Jing Yang Ya-Ru Sha Xin-Yu Hou Hong Fu Jia-Yin Li Shu-Chang Bai Yong-Fang Xie Guo-Hui Wang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第10期1780-1790,共11页
AIM:To investigate the molecular mechanisms underlying the influence of hypoxia and alpha-ketoglutaric acid(α-KG)on scleral collagen expression.METHODS:Meta-analysis and clinical statistics were used to prove the cha... AIM:To investigate the molecular mechanisms underlying the influence of hypoxia and alpha-ketoglutaric acid(α-KG)on scleral collagen expression.METHODS:Meta-analysis and clinical statistics were used to prove the changes in choroidal thickness(ChT)during myopia.The establishment of a hypoxic myopia model(HYP)for rabbit scleral fibroblasts through hypoxic culture and the effects of hypoxia andα-KG on collagen expression were demonstrated by Sirius red staining.Transcriptome analysis was used to verify the genes and pathways that hypoxia andα-KG affect collagen expression.Finally,real-time quantitative reverse transcription polymerase chain reaction(RT-qPCR)was used for reverse verification.RESULTS:Meta-analysis results aligned with clinical statistics,revealing a thinning of ChT,leading to scleral hypoxia.Sirius red staining indicated lower collagen expression in the HYP group and higher collagen expression in the HYP+α-KG group,showed that hypoxia reduced collagen expression in scleral fibroblasts,whileα-KG can elevated collagen expression under HYP conditions.Transcriptome analysis unveiled the related genes and signaling pathways of hypoxia andα-KG affect scleral collagen expression and the results were verified by RT-qPCR.CONCLUSION:The potential molecular mechanisms through which hypoxia andα-KG influencing myopia is unraveled and three novel genes TLCD4,TBC1D4,and EPHX3 are identified.These findings provide a new perspective on the prevention and treatment of myopia via regulating collagen expression. 展开更多
关键词 SCLERA scleral collagen expression HYPOXIA alpha-ketoglutaric acid MYOPIA
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Anti-abrasion collagen fiber-based membrane functionalized by UiO-66-NH_(2)with ultra-high efficiency and stability for oil-in-water emulsions separation
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作者 Xiaoxia Ye Rixin Huang +3 位作者 Zhihong Zheng Juan Liu Jie Chen Yuancai Lv 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第2期285-297,共13页
Membrane separation strategies offer promising platform for the emulsion separation.However,the low mechanical strength of membrane separation layers and the trade-off between separation flux and efficiency present si... Membrane separation strategies offer promising platform for the emulsion separation.However,the low mechanical strength of membrane separation layers and the trade-off between separation flux and efficiency present significant challenges.In this study,we report a CFM@UiO-66-NH_(2)membrane with high separation flux,efficiency and stability,through utilizing a robust anti-abrasion collagen fiber membrane(CFM)as the multifunctional support and UiO-66-NH_(2)by an in-situ growth as the separation layer.The high mechanical strength of the CFM compensated for the weakness of the separation layer,while the charge-breaking effect of UiO-66-NH_(2),along with the size sieving of its constituent separating layers and the capillary effect of the collagen fibers,contributed to the potential for efficient separation.Additionally,the CFM@UiO-66-NH_(2)membrane exhibited superhydrophilic properties,making it suitable for separating oil-in-water microemulsions and nanoemulsions stabilized by anionic surfactants.The membrane demonstrated remarkable separation efficiencies of up to 99.960%and a separation flux of370.05 L·m^(-2)·h^(-1).Moreover,it exhibits stability,durability,and abrasion resistance,maintaining excellent separation performance even when exposed to strong acids and alkalis without any damage to its structure and performance.After six cycles of reuse,it achieved a separation flux of 417.97 L·m^(-2)·h^(-1)and a separation efficiency of 99.747%.Furthermore,after undergoing 500 cycles of strong abrasion,the separation flux remained at 124.39 L·m^(-2)·h^(-1),with a separation efficiency of 99.992%.These properties make it suitable for the long-term use in harsh operating environments.We attribute these properties to the electrostatic effect resulting from the amino group on UiO-66-NH_(2)and its in-situ growth on the CFM,which forms a size-screening separation layer.Our work highlights the potential of the CFM@UiO-66-NH_(2)membrane as an environmentally friendly size-screening material for the efficient emulsion wastewater separation. 展开更多
关键词 collagen fibers Metal-organic frameworks Oil-in-water emulsion separation Size sieving
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Acupotomy ameliorates knee osteoarthritis-related collagen deposition and fibrosis in rabbit skeletal muscle through the TGF-β/Smad pathway
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作者 Tingyao Hu Einar Khavaza +7 位作者 Chuxi Liang Longfei Xing Xilin Chen Yue Xu Weiwei Ma Farid Mokhtari Juan Lu Changqing Guo 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第3期376-385,共10页
Objective:To investigate the effects of acupotomy on skeletal muscle fibrosis and collagen deposition in a rabbit knee osteoarthritis(KOA)model.Methods: Rabbits(n=18)were randomly divided into control,KOA,and KOA+acup... Objective:To investigate the effects of acupotomy on skeletal muscle fibrosis and collagen deposition in a rabbit knee osteoarthritis(KOA)model.Methods: Rabbits(n=18)were randomly divided into control,KOA,and KOA+acupotomy(Apo)groups(n=6).The rabbits in the KOA and Apo groups were modeled using the modified Videman's method for 6 weeks.After modeling,the Apo group was subjected to acupotomy once a week for 3 weeks on the vastus medialis,vastus lateralis,rectus femoris,biceps femoris,and anserine bursa tendons around the knee.The behavior of all animals was recorded,rectus femoris tissue was obtained,and histomorphological changes were observed using Masson staining and transmission electron microscopy.The expression of transforming growth factor-β1(TGF-β1),Smad 3,Smad 7,fibrillar collagen types I(Col-I)and III(Col-III)was detected using Western blot and real-time polymerase chain reaction(RT-PCR).Results: Histological analysis revealed that acupotomy improved the microstructure and reduced the collagen volume fraction of rectus femoris,compared with the KOA group(P=.034).Acupotomy inhibited abnormal collagen deposition by modulating the expression of fibrosis-related proteins and mRNA,thus preventing skeletal muscle fibrosis.Western blot and RT-PCR analysis revealed that in the Apo group,Col-I,and Col-III protein levels were significantly lower than those in the KOA group(both P<.01),same as Col-I and Col-III mRNA levels(P=.0031;P=.0046).Compared with the KOA group,the protein levels of TGF-β1 and Smad 3 were significantly reduced(both P<.01),as were the mRNA levels of TGF-β1 and Smad 3(P=.0007;P=.0011).Conversely,the levels of protein and mRNA of Smad 7 were significantly higher than that in the KOA group(P<.01;P=.0271).Conclusion: Acupotomy could alleviate skeletal muscle fibrosis and delay KOA progress by inhibiting collagen deposition through the TGF-β/Smad pathway in the skeletal muscle of KOA rabbits. 展开更多
关键词 ACUPOTOMY Knee osteoarthritis Skeletal muscle FIBROSIS collagen deposition
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Multiscale engineered artificial compact bone via bidirectional freeze-driven lamellated organization of mineralized collagen microfibrils
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作者 Lingwenyao Kong Yonggang Zhao +6 位作者 Yang Xiong Junlin Chen Shuo Wang Ziming Yan Huibin Shi Zhanli Liu Xiumei Wang 《Bioactive Materials》 SCIE CSCD 2024年第10期168-181,共14页
Bone,renowned for its elegant hierarchical structure and unique mechanical properties,serves as a constant source of inspiration for the development of synthetic materials.However,achieving accurate replication of bon... Bone,renowned for its elegant hierarchical structure and unique mechanical properties,serves as a constant source of inspiration for the development of synthetic materials.However,achieving accurate replication of bone features in artificial materials with remarkable structural and mechanical similarity remains a significant challenge.In this study,we employed a cascade of continuous fabrication processes,including biomimetic mineralization of collagen,bidirectional freeze-casting,and pressure-driven fusion,to successfully fabricate a macroscopic bulk material known as artificial compact bone(ACB).The ACB material closely replicates the composition,hierarchical structures,and mechanical properties of natural bone.It demonstrates a lamellated alignment of mineralized collagen(MC)microfibrils,similar to those found in natural bone.Moreover,the ACB exhibits a similar high mineral content(70.9%)and density(2.2 g/cm3)as natural cortical bone,leading to exceptional mechanical properties such as high stiffness,hardness,and flexural strength that are comparable to those of natural bone.Importantly,the ACB also demonstrates excellent mechanical properties in wet,outstanding biocompatibility,and osteogenic properties in vivo,rendering it suitable for a broad spectrum of biomedical applications,including orthopedic,stomatological,and craniofacial surgeries. 展开更多
关键词 Artificial compact bone Bidirectional freeze-casting Mineralized collagen microfibril Hierarchical structures
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Skin care efficacy study of recombinant humanized collagen based on in vitro level
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作者 Jian Wang Yuhui Fan +3 位作者 Danfeng Li Ningwen Cheng Ling Li Yufeng Yu 《日用化学工业(中英文)》 CAS 北大核心 2024年第9期1030-1038,共9页
Studying the skin care efficacy of recombinant humanized collagen based on in vitro level.The stability of the recombinant humanized collagen was first analyzed by treating at different temperatures,then its skincare ... Studying the skin care efficacy of recombinant humanized collagen based on in vitro level.The stability of the recombinant humanized collagen was first analyzed by treating at different temperatures,then its skincare efficacy based on in vitro level was evaluated by detecting the inhibition rate of elastase,the inhibition rate of collagenase,the protein content of type I collagen in human fibroblasts,the inhibition of reactive oxygen species(ROS)with human keratinocytes,and the effects of the recombinant humanized collagen on the expression of hyaluronic acid(HA),filaggrin(FLG)and transglutaminase 1(TGM1)in keratinocytes.The results showed that recombinant humanized collagen was able to maintain stability at temperatures below 70℃.With regard to its skincare efficacy,recombinant humanized collagen could inhibit elastase and collagenase activities and promote the increase of type I collagen content in human fibroblasts.It also showed good inhibition of ROS in keratinocytes in vitro and could increase the expression of HA,FLG,and TGM1 in keratinocytes.In short,the recombinant humanized collagen exhibited a favourable skin care effect in vitro level.This study proved that it has potential firming,anti-wrinkle,moisturizing,and repairing efficacy,and is a valuable cosmetic raw material. 展开更多
关键词 recombinant humanized collagen stability human fibroblast cell in vitro keratinocytes skin care efficacy
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Bio-Oss骨粉与CGF在自体牙移植游离端骨缺损中的修复重建
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作者 张翠乐 陈志方 赵璐 《广东医学》 CAS 2024年第6期777-781,共5页
目的评估Bio-Oss骨粉和浓缩生长因子(concentrated growth factor,CGF)联合应用于自体牙移植游离端骨缺损修复的临床疗效。方法选取2018年7月至2022年6月就诊于合肥市口腔医院口腔外科患者共44例,观察组23例,术中应用Bio-Oss骨粉及CGF;... 目的评估Bio-Oss骨粉和浓缩生长因子(concentrated growth factor,CGF)联合应用于自体牙移植游离端骨缺损修复的临床疗效。方法选取2018年7月至2022年6月就诊于合肥市口腔医院口腔外科患者共44例,观察组23例,术中应用Bio-Oss骨粉及CGF;对照组21例,不应用任何材料,术后定期随访,对比移植牙术后即刻初期稳定性、术后1周牙龈状况、术后3个月和6个月骨愈合情况以及术后1年成功率。结果观察组移植牙术后即刻初期稳定性较对照组有明显改善,差异有统计学意义(P<0.05);观察组术后1周牙龈肿胀度与对照组无明显改善,差异无统计学意义(P>0.05);术后3个月受牙区牙槽骨愈合情况较对照组好,差异有统计学意义(P<0.05);术后随访1年,观察组牙移植成功率100%;对照组牙移植成功率90.5%,留存率95.2%,失败率4.8%,差异有统计学意义(P<0.05)。结论Bio-Oss骨粉与CGF在自体牙移植游离端骨缺损中有较好的临床疗效,促进新骨形成,有利于移植牙早期稳定,提高自体牙移植成功率。 展开更多
关键词 自体牙移植 bio-oss骨粉 浓缩生长因子 游离端缺失
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Clinical efficacy of intradermal type Ⅰ collagen injections in treating skin photoaging in patients from high-altitude areas
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作者 Bin Yang Ao He +6 位作者 Bin-Bin Bu Gong Zhuo Qing-Zhu Zhou Jia-Hang He Liu Liu Wen-Li Huang Xian Zhao 《World Journal of Clinical Cases》 SCIE 2024年第16期2713-2721,共9页
BACKGROUND Photoaging,a result of chronic sun exposure,leads to skin damage and pigmentation changes.Traditional treatments may have limitations in high-altitude areas like Yunnan Province.Intradermal Col Ⅰ injection... BACKGROUND Photoaging,a result of chronic sun exposure,leads to skin damage and pigmentation changes.Traditional treatments may have limitations in high-altitude areas like Yunnan Province.Intradermal Col Ⅰ injections stimulate collagen production,potentially improving skin quality.This study aims to assess the efficacy and safety of this treatment for photoaging.AIM To evaluate the efficacy and safety of intradermal typeΙcollagen(ColΙ)injection for treating photoaging.METHODS This prospective,self-controlled study investigated the impact of intradermal injections of ColΙon skin photodamage in 20 patients from the Yunnan Province.Total six treatment sessions were conducted every 4 wk±3 d.Before and after each treatment,facial skin characteristics were quantified using a VISIA skin detector.Skin thickness data were assessed using the ultrasound probes of the Dermalab skin detector.The Face-Q scale was used for subjective evaluation of the treatment effect by the patients.RESULTS The skin thickness of the right cheek consistently increased after each treatment session compared with baseline.The skin thickness of the left cheek significantly increased after the third through sixth treatment sessions compared with baseline.The skin thickness of the right zygomatic region increased after the second to sixth treatment sessions,whereas that of the left zygomatic region showed a significant increase after the fourth through sixth treatment sessions.The skin thickness of both temporal regions significantly increased after the fifth and sixth treatment sessions compared with baseline(P<0.05).These findings were also supported by skin ultrasound images.The feature count for the red areas and wrinkle feature count decreased following the treatment(P<0.05).VISIA assessments also revealed a decrease in the red areas after treatment.The Face-QSatisfaction with Facial Appearance Overall and Face-Q-Satisfaction with Skin scores significantly increased after each treatment session.The overall appearance of the patients improved after treatment.CONCLUSION Intradermal ColΙinjection improves photoaging,with higher patient satisfaction and fewer adverse reactions,and could be an effective treatment method for populations residing in high-altitude areas. 展开更多
关键词 PHOTOAGING TypeΙcollagen Face-Q High-altitude area Skin photodamage Patient satisfaction
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富自体浓缩生长因子纤维蛋白液联Bio-Oss骨粉在重度慢性牙周炎引导性骨再生应用研究
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作者 朱光恒 卢杰英 蓝田 《中文科技期刊数据库(引文版)医药卫生》 2024年第1期0140-0143,共4页
探讨在重度慢性牙周炎(SCP)引导性骨再生(GBR)治疗中,富自体浓缩生长因子纤维蛋白液(PRF)联合Bio-Oss骨粉的临床应用效果。方法 选取我院接诊的SCP患者80例,根据随机数字表法将其分为对照组与观察组,均为其提供GBR治疗,前者以Bio-Oss骨... 探讨在重度慢性牙周炎(SCP)引导性骨再生(GBR)治疗中,富自体浓缩生长因子纤维蛋白液(PRF)联合Bio-Oss骨粉的临床应用效果。方法 选取我院接诊的SCP患者80例,根据随机数字表法将其分为对照组与观察组,均为其提供GBR治疗,前者以Bio-Oss骨粉进行缺损区填充、后者以PRF联合Bio-Oss骨粉进行缺损区填充,对比两组患者牙骨缺损再生情况、种植体成功率、组织愈合情况、疼痛程度与术后不良反应。结果 观察组牙骨缺损再生情况测量计算,植骨高度、成骨厚度均高于对照组(P<0.05);对照组、观察组种植体成功率分别为97.50%、100.00%,两组对比无差异(P>0.05);观察组患者组织愈合评估中,黏膜颜色评分、黏膜肿胀程度评分均低于对照组(P<0.05);观察组术后24h疼痛评分(2.51±0.85)分,低于对照组疼痛评分(3.25±1.08)分,差异有统计学意义(P<0.05);对照组、观察组不良反应发生率分别为5.00%、2.50%,两组对比无差异(P>0.05)。结论 PRF联合Bio-Oss骨粉应用于SCP患者GBR治疗,更利于患者骨缺损再生和组织愈合,同时可降低术后疼痛问题,值得推广。 展开更多
关键词 重度慢性牙周炎 引导性骨再生 富自体浓缩生长因子纤维蛋白液 bio-oss骨粉
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富血小板纤维蛋白联合Bio-Oss骨粉修复颌骨囊肿术后骨缺损的疗效
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作者 宁晔 唐丽宇 +2 位作者 龚飞飞 庄劭玉 夏华宽 《蚌埠医学院学报》 CAS 2024年第2期187-191,共5页
目的:观察使用富血小板纤维蛋白(platelet-rich fibrin,PRF)联合Bio-Oss骨粉修复颌骨囊肿术后骨缺损的临床疗效。方法:选取颌骨囊肿术后存在一定大小范围的骨缺损病人共36例作为研究对象,随机分为2组,各18例。对照组病人单纯使用Bio-Os... 目的:观察使用富血小板纤维蛋白(platelet-rich fibrin,PRF)联合Bio-Oss骨粉修复颌骨囊肿术后骨缺损的临床疗效。方法:选取颌骨囊肿术后存在一定大小范围的骨缺损病人共36例作为研究对象,随机分为2组,各18例。对照组病人单纯使用Bio-Oss充填修复骨缺损;观察组病人使用PRF联合Bio-Oss充填颌骨囊肿造成的骨缺损空腔。所有病人术后分别于3、6、12个月进行定期随访观察,通过CBCT影像学检查测量骨密度值评估临床疗效。结果:观察组颌骨囊肿术后伤口愈合良好,对照组有1例术后7 d创口出现轻度糜烂红肿,未见充填材料排异反应。影像学检查显示观察组较对照组病人颌骨缺损空腔内的充填材料随着时间推移与新生骨及周围骨组织生长良好,能够达到临床满意的骨组织修复效果。观察组术后3、6、12个月骨缺损区骨密度均高于对照组,差异均有统计学意义(P<0.05~P<0.01)。结论:PRF联合Bio-Oss骨粉可有效提高颌骨囊肿术后骨缺损的成骨疗效。 展开更多
关键词 颌骨囊肿 富血小板纤维蛋白 bio-oss骨粉 骨缺损
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