目的探讨金匮肾气丸联合维生素D钙片治疗2型糖尿病性骨质疏松症(T2DOP)的临床疗效,以及对患者血清骨转换标志物、白细胞介素-1β(IL-1β)、基质金属蛋白酶-9(MMP-9)、超氧化物歧化酶(SOD)水平的影响。方法选择该院2021年1月至2022年10...目的探讨金匮肾气丸联合维生素D钙片治疗2型糖尿病性骨质疏松症(T2DOP)的临床疗效,以及对患者血清骨转换标志物、白细胞介素-1β(IL-1β)、基质金属蛋白酶-9(MMP-9)、超氧化物歧化酶(SOD)水平的影响。方法选择该院2021年1月至2022年10月收治的84例T2DOP患者作为研究对象,按随机数字表法将患者分为观察组(42例)和对照组(42例)。观察组采用金匮肾气丸联合维生素D钙片治疗,对照组单用维生素D钙片治疗,治疗24周后比较两组临床疗效。治疗前后检测两组患者第1~4腰椎(L 1~4)、股骨颈的骨密度(BMD),并对两组患者进行疼痛视觉模拟量表(VAS)评分。治疗前后检测两组患者的糖代谢指标[空腹血糖(FPG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbA1c)]、血清骨转换标志物{25羟基维生素D[25(OH)D]、β-胶原特殊序列(β-Crosslaps)、总Ⅰ型胶原氨基端延长肽(Total-P1NP)、骨钙素N端中分子片段(N-MID)}以及IL-1β、MMP-9、SOD水平。统计两组不良反应发生情况。结果观察组总有效率为95.24%,明显高于对照组的76.19%(P<0.05)。治疗后,两组L 1~4 BMD以及血清25(OH)D、Total-P1NP、N-MID、SOD水平均高于治疗前(P<0.05),VAS评分、FPG、2 h PG、HbA1c以及血清β-Crosslaps、IL-1β、MMP-9水平均低于治疗前(P<0.05)。治疗后,观察组L 1~4 BMD以及血清25(OH)D、Total-P1NP、N-MID、SOD水平均高于对照组(P<0.05),VAS评分、FPG、2 h PG、HbA1c以及血清β-Crosslaps、IL-1β、MMP-9水平均低于对照组(P<0.05)。两组不良反应总发生率比较,差异无统计学意义(P>0.05)。结论金匮肾气丸联合维生素D钙片治疗T2DOP能有效调节患者血清骨转换标志物、IL-1β、MMP-9、SOD水平,改善糖代谢与骨代谢,提高临床疗效。展开更多
The incorporation of commercial flame retardants into fiber-reinforced polymer(FRP)composites has been proposed as a potential solution to improve the latter’s poor flame resistance.However,this approach often poses ...The incorporation of commercial flame retardants into fiber-reinforced polymer(FRP)composites has been proposed as a potential solution to improve the latter’s poor flame resistance.However,this approach often poses a challenge,as it can adversely affect the mechanical properties of the FRP.Thus,balancing the need for improved flame resistance with the preservation of mechanical integrity remains a complex issue in FRP research.Addressing this critical concern,this study introduces a novel additive system featuring a combination of one-dimensional(1D)hollow tubular structured halloysite nanotubes(HNTs)and two-dimensional(2D)polygonal flake-shaped nano kaolinite(NKN).By employing a 1D/2D hybrid kaolinite nanoclay system,this research aims to simultaneously improve the flame retardancy and mechanical properties.This innovative approach offers several advantages.During combustion and pyrolysis processes,the 1D/2D hybrid kaolinite nanoclay system proves effective in reducing heat release and volatile leaching.Furthermore,the system facilitates the formation of reinforcing skeletons through a crosslinking mechanism during pyrolysis,resulting in the development of a compact char layer.This char layer acts as a protective barrier,enhancing the material’s resistance to heat and flames.In terms of mechanical properties,the multilayered polygonal flake-shaped 2D NKN plays a crucial role by impeding the formation of cracks that typically arise from vulnerable areas,such as adhesive phase particles.Simultaneously,the 1D HNT bridges these cracks within the matrix,ensuring the structural integrity of the composite material.In an optimal scenario,the homogeneously distributed 1D/2D hybrid kaolinite nanoclays exhibit remarkable results,with a 51.0%improvement in mode II fracture toughness(GIIC),indicating increased resistance to crack propagation.In addition,there is a 34.5%reduction in total heat release,signifying improved flame retardancy.This study represents a significant step forward in the field of composite materials.The innovative use of hybrid low-dimensional nanomaterials offers a promising avenue for the development of multifunctional composites.By carefully designing and incorporating these nanoclays,researchers can potentially create a new generation of FRP composites that excel in both flame resistance and mechanical strength.展开更多
Diabetic cardiomyopathy is a disorder of the cardiac muscle that affects patients with diabetes.The exact mechanisms underlying diabetic cardiomyopathy are mostly unknown,but several factors have been implicated in th...Diabetic cardiomyopathy is a disorder of the cardiac muscle that affects patients with diabetes.The exact mechanisms underlying diabetic cardiomyopathy are mostly unknown,but several factors have been implicated in the pathogenesis of the disease and its progression towards heart failure,including endothelial dysfunction,autonomic neuropathy,metabolic alterations,oxidative stress,and alterations in ion homeostasis,especially calcium transients[1].In Military Medical Research,Jiang et al.[2]sought to determine the functional role of complement factor D(Adipsin)in the pathophysiology of diabetic cardiomyopathy.展开更多
A k-L(2,1)-labeling for a graph G is a function such that whenever and whenever u and v are at distance two apart. The λ-number for G, denoted by λ(G), is the minimum k over all k-L(2,1)-labelings of G. In this pape...A k-L(2,1)-labeling for a graph G is a function such that whenever and whenever u and v are at distance two apart. The λ-number for G, denoted by λ(G), is the minimum k over all k-L(2,1)-labelings of G. In this paper, we show that for or 11, which confirms Conjecture 6.1 stated in [X. Li, V. Mak-Hau, S. Zhou, The L(2,1)-labelling problem for cubic Cayley graphs on dihedral groups, J. Comb. Optim. (2013) 25: 716-736] in the case when or 11. Moreover, we show that? if 1) either (mod 6), m is odd, r = 3, or 2) (mod 3), m is even (mod 2), r = 0.展开更多
Given a graph G and a positive integer d, an L( d, 1) -labeling of G is afunction / that assigns to each vertex of G a non-negative integer such that |f(u)-f (v) | >=d ifd_c(u, v) =1;|f(u)-f(v) | >=1 if d_c(u, v...Given a graph G and a positive integer d, an L( d, 1) -labeling of G is afunction / that assigns to each vertex of G a non-negative integer such that |f(u)-f (v) | >=d ifd_c(u, v) =1;|f(u)-f(v) | >=1 if d_c(u, v) =2. The L(d, 1)-labeling number of G, lambda_d(G) is theminimum range span of labels over all such labelings, which is motivated by the channel assignmentproblem. We consider the question of finding the minimum edge span beta_d( G) of this labeling.Several classes of graphs such as cycles, trees, complete k-partite graphs, chordal graphs includingtriangular lattice and square lattice which are important to a telecommunication problem arestudied, and exact values are given.展开更多
文摘目的探讨金匮肾气丸联合维生素D钙片治疗2型糖尿病性骨质疏松症(T2DOP)的临床疗效,以及对患者血清骨转换标志物、白细胞介素-1β(IL-1β)、基质金属蛋白酶-9(MMP-9)、超氧化物歧化酶(SOD)水平的影响。方法选择该院2021年1月至2022年10月收治的84例T2DOP患者作为研究对象,按随机数字表法将患者分为观察组(42例)和对照组(42例)。观察组采用金匮肾气丸联合维生素D钙片治疗,对照组单用维生素D钙片治疗,治疗24周后比较两组临床疗效。治疗前后检测两组患者第1~4腰椎(L 1~4)、股骨颈的骨密度(BMD),并对两组患者进行疼痛视觉模拟量表(VAS)评分。治疗前后检测两组患者的糖代谢指标[空腹血糖(FPG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbA1c)]、血清骨转换标志物{25羟基维生素D[25(OH)D]、β-胶原特殊序列(β-Crosslaps)、总Ⅰ型胶原氨基端延长肽(Total-P1NP)、骨钙素N端中分子片段(N-MID)}以及IL-1β、MMP-9、SOD水平。统计两组不良反应发生情况。结果观察组总有效率为95.24%,明显高于对照组的76.19%(P<0.05)。治疗后,两组L 1~4 BMD以及血清25(OH)D、Total-P1NP、N-MID、SOD水平均高于治疗前(P<0.05),VAS评分、FPG、2 h PG、HbA1c以及血清β-Crosslaps、IL-1β、MMP-9水平均低于治疗前(P<0.05)。治疗后,观察组L 1~4 BMD以及血清25(OH)D、Total-P1NP、N-MID、SOD水平均高于对照组(P<0.05),VAS评分、FPG、2 h PG、HbA1c以及血清β-Crosslaps、IL-1β、MMP-9水平均低于对照组(P<0.05)。两组不良反应总发生率比较,差异无统计学意义(P>0.05)。结论金匮肾气丸联合维生素D钙片治疗T2DOP能有效调节患者血清骨转换标志物、IL-1β、MMP-9、SOD水平,改善糖代谢与骨代谢,提高临床疗效。
基金supported by the National Natural Science Foundation of China(11872279,12172258,and 11625210).
文摘The incorporation of commercial flame retardants into fiber-reinforced polymer(FRP)composites has been proposed as a potential solution to improve the latter’s poor flame resistance.However,this approach often poses a challenge,as it can adversely affect the mechanical properties of the FRP.Thus,balancing the need for improved flame resistance with the preservation of mechanical integrity remains a complex issue in FRP research.Addressing this critical concern,this study introduces a novel additive system featuring a combination of one-dimensional(1D)hollow tubular structured halloysite nanotubes(HNTs)and two-dimensional(2D)polygonal flake-shaped nano kaolinite(NKN).By employing a 1D/2D hybrid kaolinite nanoclay system,this research aims to simultaneously improve the flame retardancy and mechanical properties.This innovative approach offers several advantages.During combustion and pyrolysis processes,the 1D/2D hybrid kaolinite nanoclay system proves effective in reducing heat release and volatile leaching.Furthermore,the system facilitates the formation of reinforcing skeletons through a crosslinking mechanism during pyrolysis,resulting in the development of a compact char layer.This char layer acts as a protective barrier,enhancing the material’s resistance to heat and flames.In terms of mechanical properties,the multilayered polygonal flake-shaped 2D NKN plays a crucial role by impeding the formation of cracks that typically arise from vulnerable areas,such as adhesive phase particles.Simultaneously,the 1D HNT bridges these cracks within the matrix,ensuring the structural integrity of the composite material.In an optimal scenario,the homogeneously distributed 1D/2D hybrid kaolinite nanoclays exhibit remarkable results,with a 51.0%improvement in mode II fracture toughness(GIIC),indicating increased resistance to crack propagation.In addition,there is a 34.5%reduction in total heat release,signifying improved flame retardancy.This study represents a significant step forward in the field of composite materials.The innovative use of hybrid low-dimensional nanomaterials offers a promising avenue for the development of multifunctional composites.By carefully designing and incorporating these nanoclays,researchers can potentially create a new generation of FRP composites that excel in both flame resistance and mechanical strength.
基金National Institutes of Health(NIH):National Heart,Lung,and Blood Institute(NHLBI:R01-HL164772,R01-HL159062,R01-HL146691,T32-HL144456)National Institute of Diabetes and Digestive and Kidney Diseases(NIDDK:R01-DK123259,R01-DK033823)+2 种基金National Center for Advancing Translational Sciences(NCATS:UL1-TR002556-06,UM1-TR004400)(to Gaetano Santulli)Diabetes Action Research and Education Foundation(to Gaetano Santulli)Monique Weill-Caulier and Irma T.Hirschl Trusts(to Gaetano Santulli).
文摘Diabetic cardiomyopathy is a disorder of the cardiac muscle that affects patients with diabetes.The exact mechanisms underlying diabetic cardiomyopathy are mostly unknown,but several factors have been implicated in the pathogenesis of the disease and its progression towards heart failure,including endothelial dysfunction,autonomic neuropathy,metabolic alterations,oxidative stress,and alterations in ion homeostasis,especially calcium transients[1].In Military Medical Research,Jiang et al.[2]sought to determine the functional role of complement factor D(Adipsin)in the pathophysiology of diabetic cardiomyopathy.
文摘A k-L(2,1)-labeling for a graph G is a function such that whenever and whenever u and v are at distance two apart. The λ-number for G, denoted by λ(G), is the minimum k over all k-L(2,1)-labelings of G. In this paper, we show that for or 11, which confirms Conjecture 6.1 stated in [X. Li, V. Mak-Hau, S. Zhou, The L(2,1)-labelling problem for cubic Cayley graphs on dihedral groups, J. Comb. Optim. (2013) 25: 716-736] in the case when or 11. Moreover, we show that? if 1) either (mod 6), m is odd, r = 3, or 2) (mod 3), m is even (mod 2), r = 0.
文摘Given a graph G and a positive integer d, an L( d, 1) -labeling of G is afunction / that assigns to each vertex of G a non-negative integer such that |f(u)-f (v) | >=d ifd_c(u, v) =1;|f(u)-f(v) | >=1 if d_c(u, v) =2. The L(d, 1)-labeling number of G, lambda_d(G) is theminimum range span of labels over all such labelings, which is motivated by the channel assignmentproblem. We consider the question of finding the minimum edge span beta_d( G) of this labeling.Several classes of graphs such as cycles, trees, complete k-partite graphs, chordal graphs includingtriangular lattice and square lattice which are important to a telecommunication problem arestudied, and exact values are given.
