The development of advanced aircraft relies on high performance thermal-structural materials,and carbon/carbon com-posites(C/C)composited with ultrahigh-temperature ceramics are ideal candidates.However,the traditiona...The development of advanced aircraft relies on high performance thermal-structural materials,and carbon/carbon com-posites(C/C)composited with ultrahigh-temperature ceramics are ideal candidates.However,the traditional routes of compositing are either inefficient and expensive or lead to a non-uniform distribution of ceramics in the matrix.Compared with the traditional C/C-ZrC-SiC composites prepared by the reactive melt infiltration of ZrSi_(2),C/C-ZrB_(2)-ZrC-SiC composites prepared by the vacuum infiltration of ZrB_(2) combined with reactive melt infiltration have the higher content and more uniform distribution of the introduced ceramic phases.The mass and linear ablation rates of the C/C-ZrB_(2)-ZrC-SiC composites were respectively 68.9%and 29.7%lower than those of C/C-ZrC-SiC composites prepared by reactive melt infiltration.The ablation performance was improved because the volatilization of B_(2)O_(3),removes some of the heat,and the more uniformly distributed ZrO_(2),that helps produce a ZrO2-SiO2 continu-ous protective layer,hinders oxygen infiltration and decreases ablation.展开更多
Objective: To determine the effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients. Methods: In this double-blind randomized controlled study, patients aged 65 to 80 who we...Objective: To determine the effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients. Methods: In this double-blind randomized controlled study, patients aged 65 to 80 who were undergoing spinal fusion surgery for disc herniation were administered flurbiprofen 100 mg (P group, flurbiprofen group), prednisolone 0.6 mg/kg (D group, prednisolone group), prednisolone 0.6 mg/kg plus flurbiprofen 100 mg (P + D group, flurbiprofen + prednisolone group) or normal saline (S group, saline group) 15 minutes before the induction of anesthesia. Plasma samples were collected before surgery (T0) and on day 1 (T1), day 2 (T2) and day 3 (T3) following surgery. At the same time, systemic inflammatory response syndrome (SIRS) was assessed by SIRS criteria. The levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and C-reactive protein (CRP) for collected samples were measured. Results: Other groups had significantly lower levels of IL-6, CRP and occurrence of SIRS than S group (p < 0.05). Compared to groups P and D, the levels of IL-6 and CRP in P + D group were significantly lower on T1 (p < 0.05). Peak levels of IL-6 in all groups were presented on T1 (p 0.05). The levels of CRP within three days were significantly different but did not show peak levels (p > 0.05). Conclusion: Compared to prednisolone or flurbiprofen, combining flurbiprofen with prednisolone in elderly surgery patients led to an increased suppression of IL-6.展开更多
Diabetic peripheral neuropathy is a common complication of diabetes mellitus.Elucidating the pathophysiological metabolic mechanism impels the generation of ideal therapies.However,existing limited treatments for diab...Diabetic peripheral neuropathy is a common complication of diabetes mellitus.Elucidating the pathophysiological metabolic mechanism impels the generation of ideal therapies.However,existing limited treatments for diabetic peripheral neuropathy expose the urgent need for cell metabolism research.Given the lack of comprehensive understanding of energy metabolism changes and related signaling pathways in diabetic peripheral neuropathy,it is essential to explore energy changes and metabolic changes in diabetic peripheral neuropathy to develop suitable treatment methods.This review summarizes the pathophysiological mechanism of diabetic peripheral neuropathy from the perspective of cellular metabolism and the specific interventions for different metabolic pathways to develop effective treatment methods.Various metabolic mechanisms(e.g.,polyol,hexosamine,protein kinase C pathway)are associated with diabetic peripheral neuropathy,and researchers are looking for more effective treatments through these pathways.展开更多
目的:研究联合中性粒细胞百分比(Percentage of neutrophils,NEU%)、C-反应蛋白(C-reactive protein,CRP)及白介素-6(Interleukin-6,IL-6)在白血病合并肺部感染中的诊断价值。方法:选取2019年1月到2023年1月在我院收治的81例白血病患者...目的:研究联合中性粒细胞百分比(Percentage of neutrophils,NEU%)、C-反应蛋白(C-reactive protein,CRP)及白介素-6(Interleukin-6,IL-6)在白血病合并肺部感染中的诊断价值。方法:选取2019年1月到2023年1月在我院收治的81例白血病患者作为研究对象。根据感染标准分为未感染组(36例)和感染组(45例)。感染组患者进一步根据感染程度分级,分为轻度感染组(32例)与重度感染组(13例)。对比未感染组和感染组外周血中NEU%、CRP、IL-6水平;对比轻度感染组与重度感染组外周血中NEU%、CRP、IL-6水平;探讨NEU%、CRP、IL-6水平单独及联合检测对白血病合并感染的诊断效能。结果:对比两组外周血中NEU%、CRP、IL-6水平,感染组3个指标均高于未感染组(P<0.05)。轻度感染组中NEU%、CPR、IL-6指标水平均低于重度感染组(P<0.05)。NEU%特异度为50.31%,灵敏度为80.20%,准确度为69.83%,CRP特异度为50.00%,灵敏度为88.37%,准确度为75.69%,IL-6特异度为40.36%,灵敏度为92.32%,准确度为72.32%,三项联合特异度为67.32%,灵敏度为96.51%,准确度为86.62%(P<0.05)。结论:白血病合并肺部感染中联合NEU%、CRP及IL-6水平明显升高,且三者联合对白血病合并肺部感染诊断价值高。展开更多
文摘The development of advanced aircraft relies on high performance thermal-structural materials,and carbon/carbon com-posites(C/C)composited with ultrahigh-temperature ceramics are ideal candidates.However,the traditional routes of compositing are either inefficient and expensive or lead to a non-uniform distribution of ceramics in the matrix.Compared with the traditional C/C-ZrC-SiC composites prepared by the reactive melt infiltration of ZrSi_(2),C/C-ZrB_(2)-ZrC-SiC composites prepared by the vacuum infiltration of ZrB_(2) combined with reactive melt infiltration have the higher content and more uniform distribution of the introduced ceramic phases.The mass and linear ablation rates of the C/C-ZrB_(2)-ZrC-SiC composites were respectively 68.9%and 29.7%lower than those of C/C-ZrC-SiC composites prepared by reactive melt infiltration.The ablation performance was improved because the volatilization of B_(2)O_(3),removes some of the heat,and the more uniformly distributed ZrO_(2),that helps produce a ZrO2-SiO2 continu-ous protective layer,hinders oxygen infiltration and decreases ablation.
文摘Objective: To determine the effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients. Methods: In this double-blind randomized controlled study, patients aged 65 to 80 who were undergoing spinal fusion surgery for disc herniation were administered flurbiprofen 100 mg (P group, flurbiprofen group), prednisolone 0.6 mg/kg (D group, prednisolone group), prednisolone 0.6 mg/kg plus flurbiprofen 100 mg (P + D group, flurbiprofen + prednisolone group) or normal saline (S group, saline group) 15 minutes before the induction of anesthesia. Plasma samples were collected before surgery (T0) and on day 1 (T1), day 2 (T2) and day 3 (T3) following surgery. At the same time, systemic inflammatory response syndrome (SIRS) was assessed by SIRS criteria. The levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and C-reactive protein (CRP) for collected samples were measured. Results: Other groups had significantly lower levels of IL-6, CRP and occurrence of SIRS than S group (p < 0.05). Compared to groups P and D, the levels of IL-6 and CRP in P + D group were significantly lower on T1 (p < 0.05). Peak levels of IL-6 in all groups were presented on T1 (p 0.05). The levels of CRP within three days were significantly different but did not show peak levels (p > 0.05). Conclusion: Compared to prednisolone or flurbiprofen, combining flurbiprofen with prednisolone in elderly surgery patients led to an increased suppression of IL-6.
基金supported by the Projects of the National Key R&D Program of China,Nos.2021YFC2400803(to YO),2021YFC2400801(to YQ)the National Natural Science Foundation of China,Nos.82002290(to YQ),82072452(to YO),82272475(to YO)+5 种基金the Young Elite Scientist Sponsorship Program by Cast,No.YESS20200153(to YQ)the Sino-German Mobility Programme,No.M-0699(to YQ)the Excellent Youth Cultivation Program of Shanghai Sixth People’s Hospital,No.ynyq202201(to YQ)the Shanghai Sailing Program,No.20YF1436000(to YQ)the Medical Engineering Co-Project of University of Shanghai for Science and Technology,10-22-310-520(to YO)a grant from Shanghai Municipal Health Commission,No.202040399(to YO).
文摘Diabetic peripheral neuropathy is a common complication of diabetes mellitus.Elucidating the pathophysiological metabolic mechanism impels the generation of ideal therapies.However,existing limited treatments for diabetic peripheral neuropathy expose the urgent need for cell metabolism research.Given the lack of comprehensive understanding of energy metabolism changes and related signaling pathways in diabetic peripheral neuropathy,it is essential to explore energy changes and metabolic changes in diabetic peripheral neuropathy to develop suitable treatment methods.This review summarizes the pathophysiological mechanism of diabetic peripheral neuropathy from the perspective of cellular metabolism and the specific interventions for different metabolic pathways to develop effective treatment methods.Various metabolic mechanisms(e.g.,polyol,hexosamine,protein kinase C pathway)are associated with diabetic peripheral neuropathy,and researchers are looking for more effective treatments through these pathways.
文摘目的:研究联合中性粒细胞百分比(Percentage of neutrophils,NEU%)、C-反应蛋白(C-reactive protein,CRP)及白介素-6(Interleukin-6,IL-6)在白血病合并肺部感染中的诊断价值。方法:选取2019年1月到2023年1月在我院收治的81例白血病患者作为研究对象。根据感染标准分为未感染组(36例)和感染组(45例)。感染组患者进一步根据感染程度分级,分为轻度感染组(32例)与重度感染组(13例)。对比未感染组和感染组外周血中NEU%、CRP、IL-6水平;对比轻度感染组与重度感染组外周血中NEU%、CRP、IL-6水平;探讨NEU%、CRP、IL-6水平单独及联合检测对白血病合并感染的诊断效能。结果:对比两组外周血中NEU%、CRP、IL-6水平,感染组3个指标均高于未感染组(P<0.05)。轻度感染组中NEU%、CPR、IL-6指标水平均低于重度感染组(P<0.05)。NEU%特异度为50.31%,灵敏度为80.20%,准确度为69.83%,CRP特异度为50.00%,灵敏度为88.37%,准确度为75.69%,IL-6特异度为40.36%,灵敏度为92.32%,准确度为72.32%,三项联合特异度为67.32%,灵敏度为96.51%,准确度为86.62%(P<0.05)。结论:白血病合并肺部感染中联合NEU%、CRP及IL-6水平明显升高,且三者联合对白血病合并肺部感染诊断价值高。
