检索范围:
排序: 展示方式:
Detecting genetic hypermutability of gastrointestinal tumor by using a forensic STR kit
Anqi Chen, Suhua Zhang, Jixi Li, Chaoneng Ji, Jinzhong Chen, Chengtao Li
《医学前沿(英文)》 2020年 第14卷 第1期 页码 101-111 doi: 10.1007/s11684-019-0698-4
关键词: mismatch repair protein deficiency (MMR-D) microsatellite instability (MSI) short tandem repeats (STR) gastrointestinal tumor hypermutability
Expression status of GATA3 and mismatch repair proteins in upper tract urothelial carcinoma
Yue Wang, Jinxia Zhang, Yunfan Wang, Shufang Wang, Yu Zhang, Qi Miao, Fei Gao, Huiying He
《医学前沿(英文)》 2019年 第13卷 第6期 页码 730-740 doi: 10.1007/s11684-019-0687-7
关键词: upper tract urothelial carcinoma GATA binding protein 3 mismatch repair microsatellite instability prognosis
Antithrombin deficiency and decreased protein C activity in a young man with venous thromboembolism:
null
《医学前沿(英文)》 2018年 第12卷 第3期 页码 319-323 doi: 10.1007/s11684-017-0553-4
Antithrombin and protein C are two crucial members in the anticoagulant system and play important roles in hemostasis. Mutations in and lead to deficiency or dysfunction of the two proteins, which could result in venous thromboembolism (VTE). Here, we report a Chinese 22-year-old young man who developed recurrent and serious VTE in cerebral veins, visceral veins, and deep veins of the lower extremity. Laboratory tests and direct sequencing of and were conducted for the patient and his family members. Coagulation tests revealed that the patient presented type I antithrombin deficiency combined with decreased protein C activity resulting from a small insertion mutation c.848_849insGATGT in and a short deletion variant c.572_574delAGA in . This combination of the two mutations was absent in 400 healthy subjects each from southern and northern China. Then, we summarized all the mutations of the and gene reported in the Chinese Han population. This study demonstrates that the combination of antithrombin deficiency and decreased protein C activity can result in severe VTE and that the coexistence of different genetic factors may increase the risk of VTE.
关键词: antithrombin deficiency protein C activity mutation variant venous thromboembolism anticoagulants
Prevalence of vitamin D deficiency in girls with idiopathic central precocious puberty
null
《医学前沿(英文)》 2018年 第12卷 第2期 页码 174-181 doi: 10.1007/s11684-017-0544-5
The relationship between vitamin D deficiency and idiopathic central precocious puberty (ICPP) has been recently documented. In this study, 280 girls diagnosed with ICPP and 188 normal puberty control girls of similar ages were enrolled and retrospectively studied. The ICPP group had significantly lower serum 25-hydroxyvitamin D (25[OH]D) levels than the control group. Furthermore, a nonlinear relationship was found between serum 25[OH]D and ICPP, and a cut-off point for serum 25[OH]D was found at 31.8 ng/ml for ICPP with and without adjusting the different confounding factors. Girls with serum 25[OH]D≥31.8 ng/ml had a lower odds ratio (unadjusted: OR 0.36, 95% CI 0.15 to 0.83, <0.05; height and weight adjusted: OR 0.44, 95% CI 0.18 to 1.08, = 0.072; BMI adjusted: OR 0.36, 95% CI 0.16 to 0.84, <0.05). The ICPP subjects with 25[OH]D deficiency had a higher body mass index (BMI) than the subjects from the two other subgroups. Correlation analysis showed that vitamin D level is correlated with BMI and some metabolic parameters in the ICPP group. Our study suggested that vitamin D status may be associated with ICPP risk and may have a threshold effect on ICPP.
关键词: idiopathic central precocious puberty threshold effects vitamin D status
Liang ZHUANG, Shiying YU, Xiaoyuan HUANG, Yang CAO, Huihua XIONG
《医学前沿(英文)》 2009年 第3卷 第1期 页码 26-29 doi: 10.1007/s11684-009-0008-7
关键词: Ku80 DNA-PK(cs)-binding protein human ataxia telangiectasia mutated protein tumor cell lines radiosensitivity
Decellularized extracellular matrix mediates tissue construction and regeneration
《医学前沿(英文)》 2022年 第16卷 第1期 页码 56-82 doi: 10.1007/s11684-021-0900-3
关键词: decellularized extracellular matrix 3D culture organoids tissue repair
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
D1 protein turnover and the xanthophyll cycle (XC) are important photoprotective mechanisms in plants that operate under adverse conditions. Here, streptomycin sulfate (SM) and dithiothreitol (DTT) were used in tomato plants as inhibitors of D1 protein turnover and XC to elucidate their photoprotective impacts under sub-high temperature and high light conditions (HH, 35°C, 1000 µmol·m-2·s-1). SM and DTT treatments significantly reduced the net photosynthetic rate, apparent quantum efficiency, maximum photochemical efficiency, and potential activity of photosystem II, leading to photoinhibition and a decline in plant biomass under HH. The increase in reactive oxygen species levels resulted in thylakoid membrane lipid peroxidation. In addition, there were increased non-photochemical quenching and decreased chlorophyll pigments in SM and DTT application, causing an inhibition of D1 protein production at both transcriptional and translational levels. Overall, inhibition of D1 turnover caused greater photoinhibition than XC inhibition. Additionally, the recovery levels of most photosynthesis indicators in DTT-treated plants were higher than in SM-treated plants. These findings support the view that D1 turnover has a more important role than XC in photoprotection in tomato under HH conditions.
关键词: D1 turnover / photoinhibition / photoprotection / photosynthesis / tomato / xanthophyll cycle
PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (
Tao LU, Jiazhi LU, Mingfang QI, Zhouping SUN, Yufeng LIU, Tianlai LI
《农业科学与工程前沿(英文)》 页码 262-279 doi: 10.15302/J-FASE-2021383
关键词: D1 turnover photoinhibition photoprotection photosynthesis tomato xanthophyll cycle
Dynein axonemal heavy chain 10 deficiency causes primary ciliary dyskinesia in humans and mice
《医学前沿(英文)》 页码 957-971 doi: 10.1007/s11684-023-0988-8
关键词: DNAH10 mice motile cilia mutation primary ciliary dyskinesia
Generation and repair of AID-initiated DNA lesions in B lymphocytes
null
《医学前沿(英文)》 2014年 第8卷 第2期 页码 201-216 doi: 10.1007/s11684-014-0324-4
Activation-induced deaminase (AID) initiates the secondary antibody diversification process in B lymphocytes. In mammalian B cells, this process includes somatic hypermutation (SHM) and class switch recombination (CSR), both of which require AID. AID induces U:G mismatch lesions in DNA that are subsequently converted into point mutations or DNA double stranded breaks during SHM/CSR. In a physiological context, AID targets immunoglobulin (Ig) loci to mediate SHM/CSR. However, recent studies reveal genome-wide access of AID to numerous non-Ig loci. Thus, AID poses a threat to the genome of B cells if AID-initiated DNA lesions cannot be properly repaired. In this review, we focus on the molecular mechanisms that regulate the specificity of AID targeting and the repair pathways responsible for processing AID-initiated DNA lesions.
关键词: class switch recombination somatic hypermutation activation-induced deaminase DNA repair genomic instability
Tian Jiang, Yuhui Hou, Tengjiang Zhang, Xudong Feng, Chun Li
《化学科学与工程前沿(英文)》 2019年 第13卷 第3期 页码 554-562 doi: 10.1007/s11705-019-1834-z
关键词: β-glucuronidase enzyme-inorganic hybrid nanoflower biotransformation glycyrrhizin glycyrrtinic acid 3-O-mono-β-D-glucuronide
Bile duct injury repair — earlier is not better
null
《医学前沿(英文)》 2015年 第9卷 第4期 页码 508-511 doi: 10.1007/s11684-015-0418-7
Bile duct injury is a common complication of cholecystectomy. The timing of bile duct injury repair remains controversial. A recent review conducted in France reported 39% complications and 64% failure after immediate repair in 194 patients compared with 14% complications and 8% failure after late repair in 133 patients. A national review of 139 consecutive early repairs conducted at five hepatopancreaticobiliary centers in Denmark reported 4% mortality, 36% morbidity, and 42 restrictures (30%) at a median follow-up of 102 months, and only 64 patients (46%) demonstrated uneventful short-term and long-term outcomes. Most patients with bile duct injury present with bile leak and sepsis; thus, early repair is not recommended. Percutaneous drainage of bile and endoscopic stenting are the mainstays of treatment of bile leak because they convert acute bile duct injury into a controlled external biliary fistula. The ensuing benign biliary stricture should be repaired by a biliary surgeon after a delay of 4–6 weeks once the external biliary fistula has closed.
关键词: bile duct injury cholecystectomy laparoscopic cholecystectomy
《医学前沿(英文)》 doi: 10.1007/s11684-023-1001-2
关键词: iron deficiency anemia intravenous iron ferric carboxymaltose iron sucrose Hb response early response
Mobile platform for hydraulic turbine blade repair robot
GUI Zhongcheng, CHEN Qiang, SUN Zhenguo, ZHANG Wenzeng, LIU Kang
《机械工程前沿(英文)》 2008年 第3卷 第2期 页码 164-169 doi: 10.1007/s11465-008-0035-0
Luthfi Muhammad MAULUDIN, Chahmi OUCIF, Timon RABCZUK
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 792-801 doi: 10.1007/s11709-020-0629-0
关键词: self-healing concrete interfacial zone capsule materials cohesive elements fracture maps
标题 作者 时间 类型 操作
Detecting genetic hypermutability of gastrointestinal tumor by using a forensic STR kit
Anqi Chen, Suhua Zhang, Jixi Li, Chaoneng Ji, Jinzhong Chen, Chengtao Li
期刊论文
Expression status of GATA3 and mismatch repair proteins in upper tract urothelial carcinoma
Yue Wang, Jinxia Zhang, Yunfan Wang, Shufang Wang, Yu Zhang, Qi Miao, Fei Gao, Huiying He
期刊论文
Antithrombin deficiency and decreased protein C activity in a young man with venous thromboembolism:
null
期刊论文
Correlativity study between expression of DNA double-strand break repair protein and radiosensitivity
Liang ZHUANG, Shiying YU, Xiaoyuan HUANG, Yang CAO, Huihua XIONG
期刊论文
PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (SOLANUM LYCOPERSICUM) UNDER
期刊论文
PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (
Tao LU, Jiazhi LU, Mingfang QI, Zhouping SUN, Yufeng LIU, Tianlai LI
期刊论文
Construction of a CaHPO4-PGUS1 hybrid nanoflower through protein-inorganic self-assembly, and its applicationin glycyrrhetinic acid 3-O-mono-β-D-glucuronide preparation
Tian Jiang, Yuhui Hou, Tengjiang Zhang, Xudong Feng, Chun Li
期刊论文
non-inferiority trial of intravenous ferric carboxymaltose versus iron sucrose in patients with iron deficiency
期刊论文
Mobile platform for hydraulic turbine blade repair robot
GUI Zhongcheng, CHEN Qiang, SUN Zhenguo, ZHANG Wenzeng, LIU Kang
期刊论文