目的:探讨儿童原发性激素敏感型肾病综合征(SSNS)患儿血清25羟基维生素D_(3)[25-(OH)D_(3)]与T淋巴细胞亚群及实验室相关指标的表达水平特点及相关性。方法:选取2021年8月—2022年8月在山西省儿童医院肾内科初治的确诊为原发性肾病综合...目的:探讨儿童原发性激素敏感型肾病综合征(SSNS)患儿血清25羟基维生素D_(3)[25-(OH)D_(3)]与T淋巴细胞亚群及实验室相关指标的表达水平特点及相关性。方法:选取2021年8月—2022年8月在山西省儿童医院肾内科初治的确诊为原发性肾病综合征且经过标准剂量激素治疗4周后尿蛋白阴转的SSNS组患儿45例。同时选取同期年龄、性别相匹配的健康对照组儿童30例。比较两组儿童血清25-(OH)D_(3)、T淋巴细胞亚群、血浆白蛋白(Alb)、血脂测定[总胆固醇(TC)、三酰甘油(TG)]及24 h尿蛋白定量(24 h TPU)水平,分析25-(OH)D_(3)与T淋巴细胞亚群及实验室相关指标的相关性。结果:(1)SSNS组血清25-(OH)D_(3)、Treg细胞、CD_(3)^(+)CD_(8)^(+)(%)、Alb水平均低于健康对照组,差异有统计学意义(P<0.05);24 h TPU、TC、TG、CD_(3)^(+)CD_(4)^(+)(%)、CD_(4)^(+)/CD_(8)^(+)均高于健康对照组,差异有统计学意义(P<0.05)。(2)SSNS组中,血清25-(OH)D_(3)与Treg细胞、CD_(4)^(+)/CD_(8)^(+)、Alb水平呈正相关(β=0.335、0.458、0.343,P<0.05),与CD_(3)^(+)CD_(8)^(+)(%)、24 h TPU、TG、TC呈负相关(β=-0.437、-0.323、-0.325、-0.325,P<0.05)。结论:SSNS患儿存在25-(OH)D_(3)降低及T淋巴细胞亚群失衡,25-(OH)D_(3)与CD_(8)^(+)、CD_(4)^(+)/CD_(8)^(+)、Treg细胞、24 h TPU、Alb、血脂代谢密切相关。展开更多
Low-temperature,ambient processing of high-quality CsPbBr_(3)films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells(PSCs).Herein,we demonstrate a crystal orientation en...Low-temperature,ambient processing of high-quality CsPbBr_(3)films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells(PSCs).Herein,we demonstrate a crystal orientation engineering strategy of PbBr_(2)precursor film to accelerate its reaction with CsBr precursor during two-step sequential deposition of CsPbBr_(3)films.Such a novel strategy is proceeded by adding CsBr species into PbBr_(2)precursor,which can tailor the preferred crystal orientation of PbBr_(2)film from[020]into[031],with CsBr additive staying in the film as CsPb_(2)Br_(5)phase.Theoretical calculations show that the reaction energy barrier of(031)planes of PbBr_(2)with CsBr is lower about 2.28 eV than that of(O2O)planes.Therefore,CsPbBr_(3)films with full coverage,high purity,high crystallinity,micro-sized grains can be obtained at a low temperature of 150℃.Carbon-electrode PSCs with these desired CsPbBr_(3)films yield the record-high efficiency of 10.27%coupled with excellent operation stability.Meanwhile,the 1 cm^(2)area one with the superior efficiency of 8.00%as well as the flexible one with the champion efficiency of 8.27%and excellent mechanical bending characteristics are also achieved.展开更多
3,3＇-Bis（5-（N-（4-hydroxylphenyl）imidomethyl）pyrrol-2-yl）pentane 1 has been synthesized and characterized. The crystal of its methanol complex, 1·（CH3OH）2, belongs to the orthorhombic system, space group ...3,3＇-Bis（5-（N-（4-hydroxylphenyl）imidomethyl）pyrrol-2-yl）pentane 1 has been synthesized and characterized. The crystal of its methanol complex, 1·（CH3OH）2, belongs to the orthorhombic system, space group Pccn with a = 18.094（2）, b = 11.6890（16）, c = 13.3629（19） , V = 2826.3（7） 3, Z = 8, C14.5H18N2O2, Mr = 252.31, Dc = 1.186 g/cm3, F（000） = 1080 and μ（MoKα） = 0.080 mm-1. The final R = 0.0662 and wR = 0.1801 for 1908 observed reflections with I 2σ（I）, and R = 0.0800 and wR = 0.1948 for all reflections. In the solid state, bridged by included methanol molecules, the molecules of compound 1 form interpenetrated grid structure through N–H···O and O–H···O hydrogen bonds.展开更多
文摘目的:对25(OH)D3、甲状旁腺激素(PTH)与慢性心力衰竭心衰(CHF)严重程度的相关性进行系统研究。方法:选取住院CHF患者186例,其中HFpEF 96例,HFmrEF 30例,HFrEF 60例;研究同时选取同期健康人群42例作为对照组,收集一般资料、血清25(OH)D3、PTH、NT-proBNP水平、常规生化指标、心脏彩超结果等,另根据CHF组患者的不同亚型将186例CHF患者分为HFpEF组(96例患者)、HFmrEF组(30例患者)和HFrEF组(60例患者),对比HFpEF组、HFmrEF组和HFrEF组患者血清25(OH)D3和PTH表达水平差异,并进行统计分析。结果:CHF组和对照组一般资料和常规生化指标等资料对比差异无统计学意义(P > 0.05);而CHF组和对照组在25(OH)D3、PTH以及NT-proBNP等资料对比差异有统计学意义(P 3表达水平与CHF疾病的发生呈负相关(r = −0.442, P r = 0.521, P 3表达水平明显低于HFpEF组和HFmrEF组,而PTH表达水平明显高于HFpEF组和HFmrEF组(P P > 0.05)。结论:25‐羟维生素D3和PTH表达水平与心衰严重程度密切相关。25‐羟维生素D3和PTH联合检测对CHF疾病的诊断及病情严重程度评估具有重要的临床意义。
文摘目的:探讨儿童原发性激素敏感型肾病综合征(SSNS)患儿血清25羟基维生素D_(3)[25-(OH)D_(3)]与T淋巴细胞亚群及实验室相关指标的表达水平特点及相关性。方法:选取2021年8月—2022年8月在山西省儿童医院肾内科初治的确诊为原发性肾病综合征且经过标准剂量激素治疗4周后尿蛋白阴转的SSNS组患儿45例。同时选取同期年龄、性别相匹配的健康对照组儿童30例。比较两组儿童血清25-(OH)D_(3)、T淋巴细胞亚群、血浆白蛋白(Alb)、血脂测定[总胆固醇(TC)、三酰甘油(TG)]及24 h尿蛋白定量(24 h TPU)水平,分析25-(OH)D_(3)与T淋巴细胞亚群及实验室相关指标的相关性。结果:(1)SSNS组血清25-(OH)D_(3)、Treg细胞、CD_(3)^(+)CD_(8)^(+)(%)、Alb水平均低于健康对照组,差异有统计学意义(P<0.05);24 h TPU、TC、TG、CD_(3)^(+)CD_(4)^(+)(%)、CD_(4)^(+)/CD_(8)^(+)均高于健康对照组,差异有统计学意义(P<0.05)。(2)SSNS组中,血清25-(OH)D_(3)与Treg细胞、CD_(4)^(+)/CD_(8)^(+)、Alb水平呈正相关(β=0.335、0.458、0.343,P<0.05),与CD_(3)^(+)CD_(8)^(+)(%)、24 h TPU、TG、TC呈负相关(β=-0.437、-0.323、-0.325、-0.325,P<0.05)。结论:SSNS患儿存在25-(OH)D_(3)降低及T淋巴细胞亚群失衡,25-(OH)D_(3)与CD_(8)^(+)、CD_(4)^(+)/CD_(8)^(+)、Treg细胞、24 h TPU、Alb、血脂代谢密切相关。
基金the financial support from the National Key R&D program of China(2021YFF0500501 and 2021YFF0500504)the Fundamental Research Funds for the Central Universities(YJS2213 and JB211408)+1 种基金the National Natural Science Foundation of China(61874083)the Joint Research Funds of Department of Science&Technology of Shaanxi Province and Northwestern Polytechnical University(No.2020GXLH-Z-014)
文摘Low-temperature,ambient processing of high-quality CsPbBr_(3)films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells(PSCs).Herein,we demonstrate a crystal orientation engineering strategy of PbBr_(2)precursor film to accelerate its reaction with CsBr precursor during two-step sequential deposition of CsPbBr_(3)films.Such a novel strategy is proceeded by adding CsBr species into PbBr_(2)precursor,which can tailor the preferred crystal orientation of PbBr_(2)film from[020]into[031],with CsBr additive staying in the film as CsPb_(2)Br_(5)phase.Theoretical calculations show that the reaction energy barrier of(031)planes of PbBr_(2)with CsBr is lower about 2.28 eV than that of(O2O)planes.Therefore,CsPbBr_(3)films with full coverage,high purity,high crystallinity,micro-sized grains can be obtained at a low temperature of 150℃.Carbon-electrode PSCs with these desired CsPbBr_(3)films yield the record-high efficiency of 10.27%coupled with excellent operation stability.Meanwhile,the 1 cm^(2)area one with the superior efficiency of 8.00%as well as the flexible one with the champion efficiency of 8.27%and excellent mechanical bending characteristics are also achieved.
基金supported by the National Natural Science Foundation of China (No. 20702038)
文摘3,3＇-Bis（5-（N-（4-hydroxylphenyl）imidomethyl）pyrrol-2-yl）pentane 1 has been synthesized and characterized. The crystal of its methanol complex, 1·（CH3OH）2, belongs to the orthorhombic system, space group Pccn with a = 18.094（2）, b = 11.6890（16）, c = 13.3629（19） , V = 2826.3（7） 3, Z = 8, C14.5H18N2O2, Mr = 252.31, Dc = 1.186 g/cm3, F（000） = 1080 and μ（MoKα） = 0.080 mm-1. The final R = 0.0662 and wR = 0.1801 for 1908 observed reflections with I 2σ（I）, and R = 0.0800 and wR = 0.1948 for all reflections. In the solid state, bridged by included methanol molecules, the molecules of compound 1 form interpenetrated grid structure through N–H···O and O–H···O hydrogen bonds.
