<strong>Introduction: </strong>Jaw osteitis is an inflammatory disease of bone tissue causing aseptic necrosis of bone. This study aims to clarify the etiologies of osteitis of the jawbones and to describe...<strong>Introduction: </strong>Jaw osteitis is an inflammatory disease of bone tissue causing aseptic necrosis of bone. This study aims to clarify the etiologies of osteitis of the jawbones and to describe the clinical and radiographic aspects of extensive forms. <strong>Cases Presentation:</strong> Our study concerns the clinical and radiographic examination of 4 cases of voluminous bone sequesters. The causes of osteitis are mainly infectious and due to late consultations of our populations. The development of these maxillary osteitis leads to the formation of large bone sequesters. <strong>Conclusion: </strong>The evolution towards voluminous sequesters is a combination of dental infection, poor oral hygiene, late consultation and traditional treatment.展开更多
Objective To estimate the effect of two simple filters, two or more positive peptide filter and Unified Score filter on the true positive rate of protein and peptide. Methods Twenty-two LC-MS/MS datasets were from 18 ...Objective To estimate the effect of two simple filters, two or more positive peptide filter and Unified Score filter on the true positive rate of protein and peptide. Methods Twenty-two LC-MS/MS datasets were from 18 known protein mixture. Two or more positive peptide filter and Unified Score filter were applied to the 22 datasets. The filters effect was evaluated according to the true positive rate of protein and peptide for each filter. Results The positive rates of protein and peptide from two or more peptide filter raised from 56.49% to 92.86%-99.12% (for protein) and from 90.67% to 97.74%-99.62% (for peptide), but many positive proteins were filtered out. The positive rates of protein and peptide from Unified Score (ThermoFinnigan value 2400) were only about 35.51% and 82.99%, but after adjusted the value (3900) according to the number of false positive peptide, those positive rate raised to 63.61% (for protein) and 91.97% (for peptide). Conclusions Two or more peptides requirement could significantly decrease false positive rate, but it also may filter out many true positive proteins especially low molecular weight and less abundant proteins. Unified Score may be a better filter than Xcorr and DeltaCn combination and the value of 3900 is found to be more suitable for this particular datasets.展开更多
In recent years,the contamination of water by arsenic reached alarming levels in many countries of the world,attracting the interest of many researchers engaged in testing methodologies able to remove this harmful pol...In recent years,the contamination of water by arsenic reached alarming levels in many countries of the world,attracting the interest of many researchers engaged in testing methodologies able to remove this harmful pollutant.An important aspect that must be taken into consideration is the possibility to find arsenic in different chemical forms which could require different approaches for its removal.At this aim,a speciation analysis appears to be crucial for better understanding the behavior of arsenic species in aqueous solutions,especially in presence of compounds with marked chelating properties.Phosphonates can be identified as good sequestering agents and,at this purpose,this manuscript intends to investigate the interaction of As(Ⅲ)with three phosphonic acids derived from nitrilotriacetic acid(NTA)by replacements of one(N-(Phosphonomethyl)iminodiacetic acid,NTAP),two(N,N-Bis-(phosphonomethyl)glycine,NTA2P)and three(Nitrilotri(methylphosphonic acid),NTA3P)carboxylic groups with the same number of phosphonate groups.An in-depth potentiometric and calorimetric investigation allowed to determine speciation models featured by simple ML,MLH i and ML(OH)species.A complete thermodynamic characterization of the systems is reported together with the definition of coordination mode by mass spectrometry measurements.On the light of the speciation models,the possibility of using these ligands in arsenic removal techniques was assessed by determining the pL 0.5(the concentration of ligand able to remove the 50%of metal ion present in trace).All ligands show a good sequestering ability,in particular under the conditions of fresh water,following the trend NTA3P>NTA2P>NTAP.展开更多
目的分析经皮椎间孔镜TESSYS技术治疗老年游离型腰椎间盘突出合并腰椎管狭窄症的临床效果。方法选取2014年1月至2016年1月于本院接受经皮椎间孔镜TESSYS技术治疗的32例老年游离型腰椎间盘突出合并腰椎管狭窄症患者为研究对象(TESSYS组)...目的分析经皮椎间孔镜TESSYS技术治疗老年游离型腰椎间盘突出合并腰椎管狭窄症的临床效果。方法选取2014年1月至2016年1月于本院接受经皮椎间孔镜TESSYS技术治疗的32例老年游离型腰椎间盘突出合并腰椎管狭窄症患者为研究对象(TESSYS组),以本院同期采用传统开放手术治疗的32例患者作为对照(开放手术组)。分别于术前及术后1天、1周、3个月、6个月采用视觉模拟评分法(visual analogue scale,VAS)评价两组患者疼痛缓解程度,术前和术后2周采用起立-行走计时测试(time up and go test,TUG)评估两组患者行动能力,术前及术后3、6、12个月采用Oswestry功能障碍指数(Oswestry dability index,ODI)评估两组患者日常生活能力。结果术后第1天、1周、3个月及6个月两组患者VAS评分均显著低于本组术前(P<0.05),TESSYS组患者VAS评分均显著低于同期开放手术组(P=0.000)。术后2周两组患者TUG结果均显著低于本组术前(P<0.05),TESSYS组患者TUG结果显著低于开放手术组(t=5.087,P=0.000)。术后3、6及12个月,两组患者ODI评分较术前均显著降低(P<0.05),TESSYS组患者术后不同时间点ODI评分均显著低于开放手术组(P<0.05)。TESSYS组无一例患者发生硬脊膜破裂、血管神经损伤、感染等并发症。开放手术组1例患者发生马尾神经损伤,经治疗后症状有所好转,但末次随访仍存在鞍区麻木。结论经皮椎间孔镜TESSYS技术治疗老年游离型腰椎间盘突出合并腰椎管狭窄症,疗效显著优于传统开放手术,可有效维护患者脊柱稳定性,减少术后并发症,提高患者生活质量。展开更多
文摘<strong>Introduction: </strong>Jaw osteitis is an inflammatory disease of bone tissue causing aseptic necrosis of bone. This study aims to clarify the etiologies of osteitis of the jawbones and to describe the clinical and radiographic aspects of extensive forms. <strong>Cases Presentation:</strong> Our study concerns the clinical and radiographic examination of 4 cases of voluminous bone sequesters. The causes of osteitis are mainly infectious and due to late consultations of our populations. The development of these maxillary osteitis leads to the formation of large bone sequesters. <strong>Conclusion: </strong>The evolution towards voluminous sequesters is a combination of dental infection, poor oral hygiene, late consultation and traditional treatment.
基金Supported by grants from the National Basic Research Program (973)2004CB520804 ,National Natural Science Foundation of China (30270657,30230150 ,3037030 ).
文摘Objective To estimate the effect of two simple filters, two or more positive peptide filter and Unified Score filter on the true positive rate of protein and peptide. Methods Twenty-two LC-MS/MS datasets were from 18 known protein mixture. Two or more positive peptide filter and Unified Score filter were applied to the 22 datasets. The filters effect was evaluated according to the true positive rate of protein and peptide for each filter. Results The positive rates of protein and peptide from two or more peptide filter raised from 56.49% to 92.86%-99.12% (for protein) and from 90.67% to 97.74%-99.62% (for peptide), but many positive proteins were filtered out. The positive rates of protein and peptide from Unified Score (ThermoFinnigan value 2400) were only about 35.51% and 82.99%, but after adjusted the value (3900) according to the number of false positive peptide, those positive rate raised to 63.61% (for protein) and 91.97% (for peptide). Conclusions Two or more peptides requirement could significantly decrease false positive rate, but it also may filter out many true positive proteins especially low molecular weight and less abundant proteins. Unified Score may be a better filter than Xcorr and DeltaCn combination and the value of 3900 is found to be more suitable for this particular datasets.
基金We thank MIUR(Ministero dell’Istruzione,dell’Universitàe della Ricerca)for financial support(co-funded PRIN project with Prot.2015MP34H3)and FSE regional funds for Ph.D.support to D.C.
文摘In recent years,the contamination of water by arsenic reached alarming levels in many countries of the world,attracting the interest of many researchers engaged in testing methodologies able to remove this harmful pollutant.An important aspect that must be taken into consideration is the possibility to find arsenic in different chemical forms which could require different approaches for its removal.At this aim,a speciation analysis appears to be crucial for better understanding the behavior of arsenic species in aqueous solutions,especially in presence of compounds with marked chelating properties.Phosphonates can be identified as good sequestering agents and,at this purpose,this manuscript intends to investigate the interaction of As(Ⅲ)with three phosphonic acids derived from nitrilotriacetic acid(NTA)by replacements of one(N-(Phosphonomethyl)iminodiacetic acid,NTAP),two(N,N-Bis-(phosphonomethyl)glycine,NTA2P)and three(Nitrilotri(methylphosphonic acid),NTA3P)carboxylic groups with the same number of phosphonate groups.An in-depth potentiometric and calorimetric investigation allowed to determine speciation models featured by simple ML,MLH i and ML(OH)species.A complete thermodynamic characterization of the systems is reported together with the definition of coordination mode by mass spectrometry measurements.On the light of the speciation models,the possibility of using these ligands in arsenic removal techniques was assessed by determining the pL 0.5(the concentration of ligand able to remove the 50%of metal ion present in trace).All ligands show a good sequestering ability,in particular under the conditions of fresh water,following the trend NTA3P>NTA2P>NTAP.
文摘目的分析经皮椎间孔镜TESSYS技术治疗老年游离型腰椎间盘突出合并腰椎管狭窄症的临床效果。方法选取2014年1月至2016年1月于本院接受经皮椎间孔镜TESSYS技术治疗的32例老年游离型腰椎间盘突出合并腰椎管狭窄症患者为研究对象(TESSYS组),以本院同期采用传统开放手术治疗的32例患者作为对照(开放手术组)。分别于术前及术后1天、1周、3个月、6个月采用视觉模拟评分法(visual analogue scale,VAS)评价两组患者疼痛缓解程度,术前和术后2周采用起立-行走计时测试(time up and go test,TUG)评估两组患者行动能力,术前及术后3、6、12个月采用Oswestry功能障碍指数(Oswestry dability index,ODI)评估两组患者日常生活能力。结果术后第1天、1周、3个月及6个月两组患者VAS评分均显著低于本组术前(P<0.05),TESSYS组患者VAS评分均显著低于同期开放手术组(P=0.000)。术后2周两组患者TUG结果均显著低于本组术前(P<0.05),TESSYS组患者TUG结果显著低于开放手术组(t=5.087,P=0.000)。术后3、6及12个月,两组患者ODI评分较术前均显著降低(P<0.05),TESSYS组患者术后不同时间点ODI评分均显著低于开放手术组(P<0.05)。TESSYS组无一例患者发生硬脊膜破裂、血管神经损伤、感染等并发症。开放手术组1例患者发生马尾神经损伤,经治疗后症状有所好转,但末次随访仍存在鞍区麻木。结论经皮椎间孔镜TESSYS技术治疗老年游离型腰椎间盘突出合并腰椎管狭窄症,疗效显著优于传统开放手术,可有效维护患者脊柱稳定性,减少术后并发症,提高患者生活质量。
