目的:比较阿柏西普玻璃体内注射联合曲安奈德后部眼球筋膜下注射治疗抗血管内皮生长因子(VEGF)药物雷珠单抗应答不良的湿性年龄相关性黄斑变性(ARMD)的效果及安全性。方法:回顾性队列研究。2018-06/2020-05对抗VEGF药物雷珠单抗治疗应...目的:比较阿柏西普玻璃体内注射联合曲安奈德后部眼球筋膜下注射治疗抗血管内皮生长因子(VEGF)药物雷珠单抗应答不良的湿性年龄相关性黄斑变性(ARMD)的效果及安全性。方法:回顾性队列研究。2018-06/2020-05对抗VEGF药物雷珠单抗治疗应答不良的难治性ARMD 60例60眼,随机分为阿柏西普对照组及曲安奈德联合阿柏西普观察组,每组30例30眼。两组患者每月1次分别行单纯阿柏西普玻璃体内注射或阿柏西普玻璃内注射联合曲安奈德后部眼球筋膜下注射,连续注射3次。分别于注射前和注射第3次后1、3、6mo进行复查视力(BCVA)、黄斑中心凹厚度(CMT)及眼压的改变。结果:两组患者在治疗后1、3、6mo的BCVA及CMT均明显好转(P<0.05)。观察组治疗后1mo平均眼压较前升高,但仍在正常范围,两组眼压比较有差异(17.50±4.60 vs 18.30±3.73mmHg,P<0.05)。结论:曲安奈德后部眼球筋膜下注射联合阿柏西普玻璃体内注射治疗湿性ARMD,有效地减轻黄斑区水肿并改善视力,更加安全可靠。展开更多
Purpose:To translate and apply the Cataldo Lung Cancer Stigma Scale(CLCSS)for Chinese populations and test the reliability and validity of the modified scale.Method:A total of 150 lung cancer patients were recruited f...Purpose:To translate and apply the Cataldo Lung Cancer Stigma Scale(CLCSS)for Chinese populations and test the reliability and validity of the modified scale.Method:A total of 150 lung cancer patients were recruited from three tertiary hospitals in Shandong province and were tested using the Chinese version of CLCSS to assess its reliability and validity.Result:The Cronbach’s a coefficient of the Chinese version of CLCSS and the four subscales ranged from 0.599 to 0.884,and the testeretest reliability ranged from 0.601 to 0.881.The content validity index of the scale was 0.875.Four factors were extracted by exploratory factor analysis that explained 58.6%of the total variance.Conclusion:The Chinese version of CLCSS is a reliable and valid measure of stigma among Chinese patients with lung cancer.展开更多
Replacing traditional polymer-based precursors with small molecules is a promising pathway toward facile and controllable preparation of porous carbons but remains a prohibitive challenge because of the high volatilit...Replacing traditional polymer-based precursors with small molecules is a promising pathway toward facile and controllable preparation of porous carbons but remains a prohibitive challenge because of the high volatility of small molecules.Herein,a simple,general,and controllable method is reported to prepare porous carbons by converting small organic molecules into organic molecular salts followed by pyrolysis.The robust electrostatic force holding organic molecular salts together leads to negligible volatility and thus ensures the formation of carbons under high-temperature pyrolysis.Meanwhile,metal moieties in organic molecular salts can be evolved into in-situ templates or activators during pyrolysis to create nanopores.The modular nature of organic molecular salts allows easy control of the porosity and chemical doping of carbons at a molecular level.The sulfur-doped carbon prepared by the ionic solid strategy can serve as robust support to prepare small-sized intermetallic PtCo catalysts,which exhibit a high mass activity of 1.62 A·mgPt^(−1)in catalyzing oxygen reduction reaction for fuel cell applications.展开更多
Recently, medicinal peptide molecules are of great interest to many international pharmaceutical companies, mainly because of their relatively lower research costs, shorter research cycles, and the greater likelihood ...Recently, medicinal peptide molecules are of great interest to many international pharmaceutical companies, mainly because of their relatively lower research costs, shorter research cycles, and the greater likelihood of being drugs, when compared with traditional small molecules. Due to the great variety in molecule structures and the diverse biological functions, disulfide-rich peptide toxins have become a shining molecular library for the development of polypeptide drugs. In view of the increasing amount of related publications, here we summarize the discovery, structural elucidation and chemical synthesis of disulfide-rich peptide toxins and their analogs.展开更多
Inducible gene-expression systems play important roles in gene functional assays in the post-genome era.Streptomyces phage-derived phiC31 integrase,which mediates an irreversible site-specific cassette exchange betwee...Inducible gene-expression systems play important roles in gene functional assays in the post-genome era.Streptomyces phage-derived phiC31 integrase,which mediates an irreversible site-specific cassette exchange between the phage attachment site(attP)and the bacterial attachment site(attB),provides a promising option for the construction of a controllable gene-expression system.Here,we report a phiC3I integrase-mediated promoter flip system(FLIP)for the inducible expression of target genes in silk-worm(Bombyx mori).First,we constructed a FLIP reporter system,in which a BmAct4 promoter with enhanced translational efficiency was flanked by the attB and attP sites in a head-to-head orientation and further linked in a reverse orientation to a DsRed reporter gene.The coexpression of a C-terminal modified phiC3 I-NLS integrase carrying a simian virus 40(SV40)nuclear localization signal(NLS)effectively flipped the BmAct4 promoter through an attBlattP exchange,thereby activating the downstream expression of DsRed in a silkworm embryo-derived cell line,BmE.Subsequently,the FLIP system,together with a system continuously expressing the phiC3 I-NLS integrase,was used to construct binary transgenic silkworm lines.Hybridization between FLIP and phiC31-NLS transgenic silkworm lines resulted in the successful flipping of the BmAct4 promoter,with an approximately 39%heritable transformation efficiency in silkworm offispring,leading to the constitutive and high-level expression of DsRed in silkworms,which accounted for approximately 0.81%of the silkworm pupal weight.Our successful development of the FLIP system offers an effective alternative for manipulating gene expression in silkworms and other lepidopteran species.展开更多
By employing an electrical micro-titration system, in which a capacitively coupled contactless conductivity detector（C^4D） was used to monitor the reaction process in real time, herein a novel method for determining...By employing an electrical micro-titration system, in which a capacitively coupled contactless conductivity detector（C^4D） was used to monitor the reaction process in real time, herein a novel method for determining ciprofloxacin hydrochloride（CIPHCl） was developed for the first time. Mode 1： Standard CIPHCl solutions at different concentrations were loaded into reaction cells, respectively, and were titrated with standard Ag^＋. Upon the titration, the formation of a precipitate alters the number of ions in the solution, raising the change of conductivity, which was monitored by a special C-4 D to construct a titration curve. The endpoint of the titration was located from the peak of the curve. Between the elapsed time and the initial concentration of titrand, a linear relationship was established over the range of2.0–8.0 mmol/L. Mode 2： Standard Fe^3＋ took the place of Ag^＋, and was used as titrant to recognize ciprofloxacin contributed to the formation of complexation, which also resulting a change of solution conductivity. Under optimized conditions, a working range of 1.0–5.0 mmol/L CIPHCl was found. Because the reaction solutions were isolated from the working electrodes, this pioneer work shows significant simplicity and cost-effectiveness, by eliminating the requirements for detector exchange/renewal between different measurements, and by involving no auxiliary chemicals. Both of the two approaches were applied successfully to determine CIPHCl in tablet samples. And the results were in good agreement with those obtained by reference method.展开更多
文摘目的:比较阿柏西普玻璃体内注射联合曲安奈德后部眼球筋膜下注射治疗抗血管内皮生长因子(VEGF)药物雷珠单抗应答不良的湿性年龄相关性黄斑变性(ARMD)的效果及安全性。方法:回顾性队列研究。2018-06/2020-05对抗VEGF药物雷珠单抗治疗应答不良的难治性ARMD 60例60眼,随机分为阿柏西普对照组及曲安奈德联合阿柏西普观察组,每组30例30眼。两组患者每月1次分别行单纯阿柏西普玻璃体内注射或阿柏西普玻璃内注射联合曲安奈德后部眼球筋膜下注射,连续注射3次。分别于注射前和注射第3次后1、3、6mo进行复查视力(BCVA)、黄斑中心凹厚度(CMT)及眼压的改变。结果:两组患者在治疗后1、3、6mo的BCVA及CMT均明显好转(P<0.05)。观察组治疗后1mo平均眼压较前升高,但仍在正常范围,两组眼压比较有差异(17.50±4.60 vs 18.30±3.73mmHg,P<0.05)。结论:曲安奈德后部眼球筋膜下注射联合阿柏西普玻璃体内注射治疗湿性ARMD,有效地减轻黄斑区水肿并改善视力,更加安全可靠。
基金supported by the National Natural Science Foundation of China(22221003,22071225)the Joint Funds from Hefei National Synchrotron Radiation Laboratory(KY2060000175)the Fundamental Research Funds for the Central Universities(WK2060190103)。
文摘Purpose:To translate and apply the Cataldo Lung Cancer Stigma Scale(CLCSS)for Chinese populations and test the reliability and validity of the modified scale.Method:A total of 150 lung cancer patients were recruited from three tertiary hospitals in Shandong province and were tested using the Chinese version of CLCSS to assess its reliability and validity.Result:The Cronbach’s a coefficient of the Chinese version of CLCSS and the four subscales ranged from 0.599 to 0.884,and the testeretest reliability ranged from 0.601 to 0.881.The content validity index of the scale was 0.875.Four factors were extracted by exploratory factor analysis that explained 58.6%of the total variance.Conclusion:The Chinese version of CLCSS is a reliable and valid measure of stigma among Chinese patients with lung cancer.
基金We acknowledge the funding support from the National Key Research and Development Program of China(No.2018YFA0702001)the National Natural Science Foundation of China(No.22071225)+6 种基金the Fundamental Research Funds for the Central Universities(No.WK2060190103)the Joint Funds from Hefei National Synchrotron Radiation Laboratory(No.KY2060000175)the Natural Science Foundation of Guangdong Province(No.2021A1515012356)the Research Grant for Scientific Platform and Project of Guangdong Provincial Education office(No.2019KTSCX151)Shenzhen Government’s Plan of Science and Technology(No.JCYJ20180305125247308)the Collaborative Innovation Program of Hefei Science Center of CAS(No.2021HSC-CIP015)L.D.F.acknowledges the support from the Instrumental Analysis Center of Shenzhen University(Xili Campus).
文摘Replacing traditional polymer-based precursors with small molecules is a promising pathway toward facile and controllable preparation of porous carbons but remains a prohibitive challenge because of the high volatility of small molecules.Herein,a simple,general,and controllable method is reported to prepare porous carbons by converting small organic molecules into organic molecular salts followed by pyrolysis.The robust electrostatic force holding organic molecular salts together leads to negligible volatility and thus ensures the formation of carbons under high-temperature pyrolysis.Meanwhile,metal moieties in organic molecular salts can be evolved into in-situ templates or activators during pyrolysis to create nanopores.The modular nature of organic molecular salts allows easy control of the porosity and chemical doping of carbons at a molecular level.The sulfur-doped carbon prepared by the ionic solid strategy can serve as robust support to prepare small-sized intermetallic PtCo catalysts,which exhibit a high mass activity of 1.62 A·mgPt^(−1)in catalyzing oxygen reduction reaction for fuel cell applications.
基金supported by National Natural Science Foundation of China (No. 21778001)
文摘Recently, medicinal peptide molecules are of great interest to many international pharmaceutical companies, mainly because of their relatively lower research costs, shorter research cycles, and the greater likelihood of being drugs, when compared with traditional small molecules. Due to the great variety in molecule structures and the diverse biological functions, disulfide-rich peptide toxins have become a shining molecular library for the development of polypeptide drugs. In view of the increasing amount of related publications, here we summarize the discovery, structural elucidation and chemical synthesis of disulfide-rich peptide toxins and their analogs.
基金the National Natural Science Foundation of China(31530071)Chongqing Science and Technology C ommission(CSTC2018JCYJAX0298)+1 种基金Fundamental Research Funds for the Central Universities(XDJK2018C064)State Key Laboratory of Silkworm Genome Biology(SKLSGB1819-1).
文摘Inducible gene-expression systems play important roles in gene functional assays in the post-genome era.Streptomyces phage-derived phiC31 integrase,which mediates an irreversible site-specific cassette exchange between the phage attachment site(attP)and the bacterial attachment site(attB),provides a promising option for the construction of a controllable gene-expression system.Here,we report a phiC3I integrase-mediated promoter flip system(FLIP)for the inducible expression of target genes in silk-worm(Bombyx mori).First,we constructed a FLIP reporter system,in which a BmAct4 promoter with enhanced translational efficiency was flanked by the attB and attP sites in a head-to-head orientation and further linked in a reverse orientation to a DsRed reporter gene.The coexpression of a C-terminal modified phiC3 I-NLS integrase carrying a simian virus 40(SV40)nuclear localization signal(NLS)effectively flipped the BmAct4 promoter through an attBlattP exchange,thereby activating the downstream expression of DsRed in a silkworm embryo-derived cell line,BmE.Subsequently,the FLIP system,together with a system continuously expressing the phiC3 I-NLS integrase,was used to construct binary transgenic silkworm lines.Hybridization between FLIP and phiC31-NLS transgenic silkworm lines resulted in the successful flipping of the BmAct4 promoter,with an approximately 39%heritable transformation efficiency in silkworm offispring,leading to the constitutive and high-level expression of DsRed in silkworms,which accounted for approximately 0.81%of the silkworm pupal weight.Our successful development of the FLIP system offers an effective alternative for manipulating gene expression in silkworms and other lepidopteran species.
基金financial support from Key R&D of Shandong Province (No. 2016GSF120008)Qingdao National Laboratory for Marine Science and Technology (No. 2015ASKJ02-05)
文摘By employing an electrical micro-titration system, in which a capacitively coupled contactless conductivity detector（C^4D） was used to monitor the reaction process in real time, herein a novel method for determining ciprofloxacin hydrochloride（CIPHCl） was developed for the first time. Mode 1： Standard CIPHCl solutions at different concentrations were loaded into reaction cells, respectively, and were titrated with standard Ag^＋. Upon the titration, the formation of a precipitate alters the number of ions in the solution, raising the change of conductivity, which was monitored by a special C-4 D to construct a titration curve. The endpoint of the titration was located from the peak of the curve. Between the elapsed time and the initial concentration of titrand, a linear relationship was established over the range of2.0–8.0 mmol/L. Mode 2： Standard Fe^3＋ took the place of Ag^＋, and was used as titrant to recognize ciprofloxacin contributed to the formation of complexation, which also resulting a change of solution conductivity. Under optimized conditions, a working range of 1.0–5.0 mmol/L CIPHCl was found. Because the reaction solutions were isolated from the working electrodes, this pioneer work shows significant simplicity and cost-effectiveness, by eliminating the requirements for detector exchange/renewal between different measurements, and by involving no auxiliary chemicals. Both of the two approaches were applied successfully to determine CIPHCl in tablet samples. And the results were in good agreement with those obtained by reference method.
