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Liu FS, Huang HL. Case report: One case of acute myeloid leukemia M3 with atypical morphology. Front Oncol 2024; 14:1341840. [PMID: 38567145 PMCID: PMC10985165 DOI: 10.3389/fonc.2024.1341840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 02/29/2024] [Indexed: 04/04/2024] Open
Abstract
Acute promyelocytic leukemia (APL) is a type of acute myeloid leukemia. About 2% of APL is characterized by atypical rearrangements. Here we reported one APL case with atypical manifestations and morphology. A 35-year-old woman patient, mainly due to fatigue, poor appetite for over 10 days and intermittent fever for 3 days. combined with the results of flow cytometry, fusion gene and chromosome, the patient was diagnosed as AML-M3 with atypical morphology. Double induction therapy with retinoic acid and arsenous acid was immediately administrated. Idarubicin was administrated on the 18th day. A re-examination was performed in the 5th week, both the blood routine test and myelogram showed normal results, and the fusion gene turned negative, indicating complete remission. When atypical morphology occurs, peripheral blood POX staining may be performed to check the abnormal cells. Flow cytometry, chromosome analysis, and fusion gene analysis are also required for further diagnosis.
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Affiliation(s)
| | - Hua-Liang Huang
- Department of Laboratory, Inner Mongolia Baogang Hospital, Baotou, China
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2
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Huang HL, Liu XM, Zhang Y, Huang YS. [Comparison of formulas for intraocular lens power calculation after corneal refractive surgery]. Zhonghua Yan Ke Za Zhi 2023; 59:1012-1018. [PMID: 38061902 DOI: 10.3760/cma.j.cn112142-20231015-00143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Objective: To evaluate the accuracy of five intraocular lens (IOL) power calculation formulas for calculating IOL power in patients with previous myopia-corrected corneal refractive surgery. Methods: In this case series study, a total of 30 eyes of 30 patients who had excimer laser corneal refractive surgery for myopia and subsequent cataract surgery in Qingdao Eye Hospital from April 2020 to October 2022 were included. The Pentacam anterior segment analysis system and IOLMaster were used to measure ocular parameters, including axial length, anterior chamber depth, keratometry, lens thickness, and mean true net power (mTNP). Five formulas were used for IOL power calculation: Shammas formula, Olsen formula, SRK/T (mTNP) formula, Haigis-L formula, and Barrett True-K formula. After cataract extraction, we obtained the actual postoperative refraction by measuring the objective refraction. The prediction error was determined as the difference between the actual postoperative refraction and the predicted refraction, and the absolute value of the prediction error was the absolute error. The differences in the calculation errors of the 5 formulas were compared. Results: Regarding the prediction errors, the results of the SRK/T (mTNP) and Olsen formulas were better than those of Shammas and Haigis-L, and the differences were statistically significant (all P<0.05). The proportion of eyes with an absolute error of 0.50 D for Barrett True-K was highest (70%, 21/30), followed by the SRK/T (mTNP) formula (67%, 20/30). The proportions of eyes with an absolute error within 1.00 D for Barrett True-K, SRK/T (mTNP), and Olsen were all over 80%, with 24 eyes, 24 eyes, and 25 eyes, respectively. Conclusions: The Barrett True-K formula showed high accuracy in predicting the refraction after cataract extraction in patients with a history of corneal refractive surgery for myopia. The calculation result of the Haigis-L formula was highly unstable.
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Affiliation(s)
- H L Huang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Qingdao 266071, China
| | - X M Liu
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Qingdao 266071, China
| | - Y Zhang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Qingdao 266071, China
| | - Y S Huang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Qingdao 266071, China
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Chen XH, Yang ZJ, Xu CJ, Chen YH, Huang HL, Li ZS, Lin T, Zhao ML, Chen T, Chen H, Liang YR, Zhu MS, Hu YF, Li GX, Yu J. [Application effect of the joint nasogastric tube for pairing overlap guiding tube (JNT) in esophagojejunostomy]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:986-989. [PMID: 37849270 DOI: 10.3760/cma.j.cn441530-20230105-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
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4
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Huang HL, Li YY, Guo HB. Corrigendum: Detection and homology analysis of carbapenem resistant Acinetobacter baumannii resistance gene. Front Cell Infect Microbiol 2023; 13:1141959. [PMID: 37033475 PMCID: PMC10081446 DOI: 10.3389/fcimb.2023.1141959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/10/2023] [Indexed: 04/11/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fcimb.2022.987260.].
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Affiliation(s)
| | | | - Hong-Bo Guo
- Department of Laboratory, Inner Mongolia Baogang Hospital, Baotou, China
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5
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Guo HB, Huang HL, Li YY. Detection and homology analysis of carbapenem resistant Acinetobacter baumannii resistance gene. Front Cell Infect Microbiol 2023; 12:987260. [PMID: 36683680 PMCID: PMC9853024 DOI: 10.3389/fcimb.2022.987260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/08/2022] [Indexed: 01/07/2023] Open
Abstract
Objective To explore the carrying status and homology of carbapenem resistant Acinetobacter baumannii (CRAB) in our hospital. Methods From January 2015 to December 2017, 52 strains of acinetobacter baumannii isolated from the bacteria room of the clinical laboratory of Baogang hospital in Inner Mongolia were selected as the research object. K-B disk diffusion method and Vitek-2 were used to determine the drug sensitivity of Acinetobacter baumannii. The drug resistance gene was detected by polymerase chain reaction (PCR) and its homology was analyzed by pulsed field gel electrophoresis (PFGE). Results Except for Cefoperazone/sulbactam, other antibiotics were resistant to ab. The detection rate of drug resistance gene class C β-lactamases (ADC) was 100%, and the higher detection rates of other drug resistance genes were class D β-lactamases (OXA)-51 (36 strains, 90.0%),disinfectant gene qacE△1-sull (32 strains, 80.0%), and klebsiella pneumoniae carbapenemase (KPC) gene was not detected. 2-8 drug resistance genes were detected in each CRAB strain, and the strains with 6 drug resistance genes were the most (15 strains, 37.5%); Among the detected drug-resistant gene combinations, ADC+OXA-23 + OXA-51 gene was detected at the same time (29 strains, 72.5%), followed by ADC+ intl1 + qacE △ 1-sull gene (26 strains, 65.0%), ADC + qacE △ 1-sull + ant (3 '') -i gene (19 strains, 47.5%), and 11 strains (27.5%). There were 19 different types in PFGE homology test, each type was 1-9 strains, including 9 strains of A5 type and 8 strains of A18 type, mainly from intensive care unit. Conclusion CRAB in the hospital is highly resistant to common clinical antibiotics. OXA-23 and OXA-51 genes are most likely to be the main factors causing drug resistance of Acinetobacter baumannii in the hospital. Homology analysis showed that there was CRAB nosocomial infection transmission in different wards of the hospital.
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Affiliation(s)
- Hong-Bo Guo
- Department of Laboratory, Inner Mongolia Baogang Hospital, Baotou, China
| | - Hua-Liang Huang
- Department of Laboratory, Inner Mongolia Baogang Hospital, Baotou, China
| | - Yue-Yu Li
- Department of Laboratory, Inner Mongolia Baogang Hospital, Baotou, China
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Zhong WS, Xu Z, Cui J, Chen WX, Huang HL, Tan HL, Zhang PQ, Tan L, Xie L. [Application of lateral upper arm free flap in the repair of postoperative defects of oral cancer]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1219-1224. [PMID: 36319128 DOI: 10.3760/cma.j.cn115330-20220406-00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To explore the clinical application and efficacy of lateral upper arm free flap (LUAFF) for one-stage repairing of soft tissue defect after oral cancer surgery. Methods: This article was a retrospective analysis of clinical data of 46 patients receiving treatment of one-stage repairing of soft tissue defect with LUAFF after oral cancer surgery in Hunan Cancer Hospital, from June 2019 to June 2021. Among these cases, 40 were males, and 6 were females. The patients' ages were from 23 to 64 years old. The clinical data of patients were reviewed and outcomes were evaluated. SPSS 23.0 software was used for statistical analysis. Results: In the LUAFF of 46 patients, flap area ranged from 5.0 cm×3.5 cm to 15.0 cm×7.0 cm; the mean pedicle length was 8.15±1.42 cm; the mean artery diameter was 1.20±0.41 mm (range, 1.5 to 2.5 mm); the mean diameter of the largest veins was 2.15±0.52 mm; and the median number of perforators was 2.6 (range, 1 to 4). All donor sites were closed primarily. Two cases had arterial anastomosis thrombosis, but their flaps were successfully saved with urgent re-anastomosis of the vessels. The overall flap survival rate was 93.5%(43/46), with flap necroses after operation in three cases. No patient received tracheotomy. The average hospital stay time of patients after operation was 9.4 days. The follow-up time was 6-24 months, elbow and wrist movements on the operative side were normal, and the upper limb muscle strength was not affected. Conclusions: LUAFF is a suitable choice for the repairs of small-moderate tissue defects in oral cancer surgery, with consistent perforators in the flap, simple harvest method, concealed donor-site scar, and high survival rate.
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Affiliation(s)
- W S Zhong
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Z Xu
- Department of Head and Neck Radiation Oncology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - J Cui
- Department of Head and Neck Surgery, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen 518116, China
| | - W X Chen
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - H L Huang
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - H L Tan
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - P Q Zhang
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - L Tan
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Li Xie
- Department of Head and Neck Surgery, Hunan Cancer Hospital,The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
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Huang HL, Wang KD, Sun XH. [Relative factors analysis of visual field defect in advanced primary glaucoma]. Zhonghua Yan Ke Za Zhi 2022; 58:22-27. [PMID: 34979789 DOI: 10.3760/cma.j.cn112142-20210608-00272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To explore the relative factors of visual field defect in advanced primary glaucoma. Methods: A retrospective case-control study. The data of patients with primary advanced glaucoma who had the central 5 to 10 degrees of the visual field or the temporal peripheral field and were treated at Eye & ENT Hospital of Fudan University from January 2014 to December 2019 were reviewed. The patients were divded into the central visual field group and the temporal peripheral field group according to the type of visual field defect. Statistical analyses of single-factor (Chi square test or independent sample t test) and multivariate logistic regression were performed to analyze the correlation between the remaining visual field and the risk factors including age, gender, left/right eye, type of glaucoma, baseline glaucoma stage, peak intraocular pressure (IOP), mean IOP, number of operations, family history, high myopia, diabetes, hypertension, hypotension and migraine. Results: A total of 287 patients (287 eyes) were included. There were 101 patients [mean age, (61±15) years; 48 males, 53 females] with the central 5 to 10 degrees of the visual field and 186 patients [mean age, (59±17) years; 107 males, 79 females] with the temporal peripheral field. There was no statistically significant difference between the two groups with respect to age, gender, left/right eye, age of onset, number of operations, family history and history of combined systemic diseases (all P>0.05). Primary open-angle glaucoma, chronic primary angle-closure glaucoma (CPACG) and acute primary angle-closure glaucoma were found in 26, 34 and 41 patients, respectively, in the central visual field group, and in 61, 78 and 47 patients, respectively, in the temporal peripheral field group. The baseline glaucoma was in the moderate stage in 30 and 32 patients, and in the advanced stage in 71 and 154 patients, respectively, in the two groups. The peak IOP was (31.94±4.11) mmHg (1 mmHg=0.133 kPa) and (34.58±6.47) mmHg, and the mean IOP was (22.48±3.99) mmHg and (24.01±4.30) mmHg, respectively, in the two groups. High myopia occurred in 5 and 28 patients, respectively, in the two groups. The differences in the type of glaucoma (χ²=7.24), baseline glaucoma stage (χ²=6.04), peak IOP (t=4.22), mean IOP (t=2.96) and high myopia (χ²=6.57) between the two groups were statistically significant (all P<0.05). In the multivariable model, CPACG (OR=2.021, 95%CI: 1.020 to 4.001), higher peak IOP (OR=1.128, 95%CI: 1.038 to 1.226) and high myopia (OR=5.090, 95%CI: 1.556 to 16.651) increased the risks for the progression to the temporal peripheral field. Conclusion: CPACG, higher peak IOP and concurrent high myopia are all relative factors for the progression to the temporal peripheral field in advanced primary glaucoma.
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Affiliation(s)
- H L Huang
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, NHC Key Laboratory of Myopia (Fudan University), Laboratory of Myopia, Chinese Academy of Medical Science, Shanghai 200031, China
| | - K D Wang
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, NHC Key Laboratory of Myopia (Fudan University), Laboratory of Myopia, Chinese Academy of Medical Science, Shanghai 200031, China
| | - X H Sun
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, NHC Key Laboratory of Myopia (Fudan University), Laboratory of Myopia, Chinese Academy of Medical Science, Shanghai 200031, China
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Li JK, Huang HL, Zhu YH, Lei JQ. [Research progress of cirrhotic portal hypertension in diagnostic imaging methods]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1224-1228. [PMID: 35045646 DOI: 10.3760/cma.j.cn501113-20200116-00019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hepatic venous pressure gradient measurement via jugular vein catheterization is still currently the gold standard for evaluating portal hypertension. However, how to accurately and reproducibly assess whether there is portal hypertension has always been a concern in patients with liver cirrhosis. In recent years, imaging methods have made significant progress in the non-invasive diagnosis of portal hypertension. This paper reviews the current different diagnostic value of imaging methods and related research progress in an attempt to evaluate patients with cirrhotic portal hypertension.
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Affiliation(s)
- J K Li
- Department of Radiology, the First Hospital of Lanzhou University & Intelligent Imaging Medical Engineering Research Center of Gansu Province & Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou 73000, China
| | - H L Huang
- Department of Radiology, the First Hospital of Lanzhou University & Intelligent Imaging Medical Engineering Research Center of Gansu Province & Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou 73000, China
| | - Y H Zhu
- Department of Radiology, the First Hospital of Lanzhou University & Intelligent Imaging Medical Engineering Research Center of Gansu Province & Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou 73000, China
| | - J Q Lei
- Department of Radiology, the First Hospital of Lanzhou University & Intelligent Imaging Medical Engineering Research Center of Gansu Province & Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou 73000, China
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Hsiung TL, Wei LW, Huang HL, Wang HP. In situ X-ray absorption spectroscopic studies of TiO 2 photocatalytic active sites for degradation of trace CHCl 3 in drinking water. J Synchrotron Radiat 2021; 28:1839-1844. [PMID: 34738937 DOI: 10.1107/s1600577521008973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
Toxic disinfection byproducts such as trihalomethanes (e.g. CHCl3) are often found after chlorination of drinking water. It has been found that photocatalytic degradation of trace CHCl3 in drinking water generally lacks an expected relationship with the crystalline phase, band-gap energy or the particle sizes of the TiO2-based photocatalysts used such as nano TiO2 on SBA-15 (Santa Barbara amorphous-15), TiO2 clusters (TiO2-SiO2) and atomic dispersed Ti [Ti-MCM-41 (Mobil Composition of Matter)]. To engineer capable TiO2 photocatalysts, a better understanding of their photoactive sites is of great importance and interest. Using in situ X-ray absorption near-edge structure (XANES) spectroscopy, the A1 (4969 eV), A2 (4971 eV) and A3 (4972 eV) sites in TiO2 can be distinguished as four-, five- and six- coordinated Ti species, respectively. Notably, the A2 Ti sites that are the main photocatalytic species of TiO2 are shown to be accountable for about 95% of the photocatalytic degradation of trace CHCl3 in drinking water (7.2 p.p.m. CHCl3 gTiO2-1 h-1). This work reveals that the A2 Ti species of a TiO2-based photocatalyst are mainly responsible for the photocatalytic reactivity, especially in photocatalytic degradation of CHCl3 in drinking water.
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Affiliation(s)
- T L Hsiung
- Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - L W Wei
- Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - H L Huang
- Department of Safety, Health and Environmental Engineering, National United University, Miaoli 36063, Taiwan
| | - H Paul Wang
- Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
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Huang HL, Cai MY, Lin N, Wang Y, Xu LP. [Analysis of genetic abnormalities and clinical outcome of fetus with ultrasonic nonstructural abnormality]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1094-1099. [PMID: 34619927 DOI: 10.3760/cma.j.cn112150-20210326-00307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analysis the incidence of abnormal genetics and the clinical outcome of fetuses with ultrasonic nonstructural abnormality. Methods: This study was conducted retrospectively. 631 pregnant women were enrolled in the Prenatal Diagnostic Center of Fujian Maternal and Child Health Hospital due to ultrasonic nonstructural abnormality from January 2016 to January 2019. According to different gestational weeks, amniotic fluid or umbilical cord blood samples were collected for chromosome karyotype analysis and SNP-array. According to the number of nostructural abnormalities, they were divided into 1 nostructural abnormality group, 2 nostructural abnormalities group, and ≥3 nostructural abnormalities group. Chi-square test was used for comparison between groups. Results: Of the 631 cases, 34 cases (5.4%, 34/631) had abnormal karyotypes, including 20 cases with abnormal chromosome number and 14 cases with abnormal chromosome structure. In results of SNP-array, there were 53 abnormal results (8.4%, 53/631), including 32 cases of pathogenic copy number variations (CNV) and 21 cases of variations of uncertain clinical significance (VOUS). The rates of pathogenic CNV were 4.57% (21/260), 4.76% (7/147) and 16.67% (4/24) in the group of 1, 2 and ≥3 nostructural abnormalities, respectively. The rate of the three groups showed a linear trend, and the difference was statistically significant (χ²=7.419,P<0.05). In the single nostructural abnormality group, the rate of pathogenic CNV of nasal bone dysplasia, fetal growth restriction (FGR) and thickened nuchal translucency (NT) were 8.11% (3/37), 7.04% (5/71) and 5.60% (7/125), respectively. Conclusions: Compared with the karyotype analysis, SNP-array can significantly improve the detection rate of genetic abnormalities in ultrasonic nonstructural abnormality. When multiple ultrasonic nonstructural abnormality were combined, the risk of genetic abnormalities showed an upward trend.
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Affiliation(s)
- H L Huang
- Fujian Maternity and Child Health Hospital, Fujian Maternity and Child Health Hospital Affiliated to Fujian Medical University, Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou 350001, China
| | - M Y Cai
- Fujian Maternity and Child Health Hospital, Fujian Maternity and Child Health Hospital Affiliated to Fujian Medical University, Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou 350001, China
| | - N Lin
- Fujian Maternity and Child Health Hospital, Fujian Maternity and Child Health Hospital Affiliated to Fujian Medical University, Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou 350001, China
| | - Y Wang
- Fujian Maternity and Child Health Hospital, Fujian Maternity and Child Health Hospital Affiliated to Fujian Medical University, Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou 350001, China
| | - L P Xu
- Fujian Maternity and Child Health Hospital, Fujian Maternity and Child Health Hospital Affiliated to Fujian Medical University, Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou 350001, China
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Hsiung TL, Wei LW, Huang HL, Tuan YJ, Wang HP. In situ X-ray absorption spectroscopic studies of photocatalytic oxidation of As(III) to less toxic As(V) by TiO 2 nanotubes. J Synchrotron Radiat 2021; 28:849-853. [PMID: 33949992 DOI: 10.1107/s1600577521003076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Arsenic in groundwater caused the black-foot disease (BFD) in many countries in the 1950-1960s. It is of great importance to develop a feasible method for removal of arsenic from contaminated groundwater in BFD endemic areas. Photocatalytic oxidation of As(III) to less toxic As(V) is, therefore, of significance for preventing any arsenic-related disease that may occur. By in situ synchrotron X-ray absorption spectroscopy, the formation of As(V) is related to the expense of As(III) disappearance during photocatalysis by TiO2 nanotubes (TNTs). Under UV/Vis light irradiation, the apparent first-order rate constant for the photocatalytic oxidation of As(III) to As(V) is 0.0148 min-1. It seems that As(III) can be oxidized with photo-excited holes while the not-recombined electrons may be scavenged with O2 in the channels of the well defined TNTs (an opening of 7 nm in diameter). In the absence of O2, on the contrary, As(III) can be reduced to As(0), to some extent. Cu(II) (CuO), as an electron acceptor, was impregnated on the TNTs surfaces in order to gain a better understanding of electron transfer during photocatalysis. It appears that As(III) can be oxidized to As(V) while Cu(II) is reduced to Cu(I) and Cu(0). The molecular-scale data are very useful in revealing the oxidation states and interconversions of arsenic during the photocatalytic reactions. This work has implications in that the toxicity of arsenic in contaminated groundwater or wastewater can be effectively decreased via solar-driven photocatalysis, which may facilitate further treatments by coagulation.
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Affiliation(s)
- T L Hsiung
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - L W Wei
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - H L Huang
- Department of Safety, Health and Environmental Engineering, National United University, Miaoli 36003, Taiwan
| | - Y J Tuan
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - H Paul Wang
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
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Huang HL, Gnanasegaran G, Paez D, Fanti S, Hacker M, Sathekge M, Bom HS, Cerci JJ, Chiti A, Lan X, Herrmann K, Scott AM, Vinjamuri S, Dorbala S, Estrada E, Pellet O, Orellana P, El-Haj N, Giammarile F, Abdel-Wahab M, Bomanji J. Nuclear medicine services after COVID-19: gearing up back to normality. Eur J Nucl Med Mol Imaging 2020; 47:2048-2053. [PMID: 32367256 PMCID: PMC7197920 DOI: 10.1007/s00259-020-04848-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- H L Huang
- Institute of Nuclear Medicine, University College London Hospital, 5th Floor, 235 Euston Road, London, UK.,Department of Nuclear Medicine and Molecular Imaging, Division of Radiological Sciences, Singapore General Hospita, Bukit Merah, Singapore
| | | | - D Paez
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - S Fanti
- Department of Oncology, Division of Nuclear Medicine, University of Bologna, Bologna, Italy
| | - M Hacker
- Department of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna General Hospital, Vienna, Austria
| | - M Sathekge
- Nuclear Medicine Department, University of Pretoria and Steve Biko Academic Hospital, Pretoria, South Africa
| | - H S Bom
- Department of Nuclear Medicine, Chonnam National University, Seoul, South Korea
| | - J J Cerci
- PET/CT Department at Quanta Diagnostics and Therapy, Curitiba, Brazil
| | - A Chiti
- Humanitas University and Humanitas Research Centre, Milan, Italy
| | - X Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - K Herrmann
- Department of Nuclear Medicine, Universitätsklinikum Essen, Essen, Germany
| | - A M Scott
- Department of Molecular Imaging and Therapy, Austin Health, Melbourne, Australia
| | - S Vinjamuri
- Royal Liverpool University Hospital, Liverpool, L7 8XP, UK
| | - S Dorbala
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
| | - E Estrada
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - O Pellet
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - P Orellana
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - N El-Haj
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - F Giammarile
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - M Abdel-Wahab
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - Jamshed Bomanji
- Institute of Nuclear Medicine, University College London Hospital, 5th Floor, 235 Euston Road, London, UK.
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Huang HL, Gnanasegaran G, Paez D, Fanti S, Hacker M, Sathekge M, Bom HS, Cerci JJ, Chiti A, Lan X, Herrmann K, Scott AM, Vinjamuri S, Dorbala S, Estrada E, Pellet O, Orellana P, El-Haj N, Giammarile F, Abdel-Wahab M, Bomanji J. Correction to: Nuclear medicine services after COVID-19: gearing up back to normality. Eur J Nucl Med Mol Imaging 2020; 47:2220. [PMID: 32462399 PMCID: PMC7252414 DOI: 10.1007/s00259-020-04884-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The authors P. Orellana and N. El-Haj were inadvertently deleted in the original paper.
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Affiliation(s)
- H L Huang
- Institute of Nuclear Medicine, University College London Hospital, 5th Floor, 235 Euston Road, London, UK
- Department of Nuclear Medicine and Molecular Imaging, Division of Radiological Sciences, Singapore General Hospital, Bukit Merah, Singapore
| | | | - D Paez
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - S Fanti
- Department of Oncology, Division of Nuclear Medicine, University of Bologna, Bologna, Italy
| | - M Hacker
- Department of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna General Hospital, Vienna, Austria
| | - M Sathekge
- NuclearMedicine Department, University of Pretoria and Steve Biko Academic Hospital, Pretoria, South Africa
| | - H S Bom
- Department of Nuclear Medicine, Chonnam National University, Seoul, South Korea
| | - J J Cerci
- PET/CT Department at Quanta Diagnostics and Therapy, Curitiba, Brazil
| | - A Chiti
- Humanitas University and Humanitas Research Centre, Milan, Italy
| | - X Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - K Herrmann
- Department of Nuclear Medicine, Universitätsklinikum Essen, Essen, Germany
| | - A M Scott
- Department of Molecular Imaging and Therapy, Austin Health, Melbourne, Australia
| | - S Vinjamuri
- Royal Liverpool University Hospital, Liverpool, L7 8XP, UK
| | - S Dorbala
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
| | - E Estrada
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - O Pellet
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - P Orellana
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - N El-Haj
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - F Giammarile
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - M Abdel-Wahab
- Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - Jamshed Bomanji
- Institute of Nuclear Medicine, University College London Hospital, 5th Floor, 235 Euston Road, London, UK.
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Shang Q, Wu P, Huang HL, Zhang SL, Tang XD, Guo XJ. Inhibition of heat shock protein 90 suppresses Bombyx mori nucleopolyhedrovirus replication in B. mori. Insect Mol Biol 2020; 29:205-213. [PMID: 31621968 DOI: 10.1111/imb.12625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/02/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Heat shock protein 90 (Hsp90) plays a very important role in facilitating the replication of many viruses. Until now, little has been known about the role of Hsp90 in Bombyx mori virus infection. In this study, we explored the role of BmHsp90 in B. mori nucleopolyhedrovirus (BmNPV) replication. We found that BmHsp90 inhibition by geldanamycin (GA) significantly reduced the BmNPV titre, the protein expression level of BmNPV nucleocapsid protein 39 (VP39) and the transcript level of BmNPV genes. Silencing the hsp90 gene in BmN cells by small interfering RNA suppressed BmNPV replication whereas overexpression of hsp90 promoted the replication of BmNPV. After inhibition of Hsp90, the expression of three key genes [signal transducing activator of transcription (stat), suppressor of cytokine signalling protein 2 (socs2), socs6] involved in the Janus kinase/STAT pathway significantly changed, with up-regulation of stat and down-regulation of socs2 and socs6. In addition, the expression of two antiapoptosis genes, BmNPV inhibitor of apoptosis protein1 (BmNPV-iap1) and Bmiap2, was greatly decreased in GA-treated cells, whereas their expression was significantly increased in hsp90-overexpressed silkworm larvae. Our results indicated that inhibition of Hsp90 can suppress BmNPV proliferation in B. mori. Our findings may provide new clues to elucidate the molecular mechanisms of silkworm-virus interactions.
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Affiliation(s)
- Q Shang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
| | - P Wu
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
- The Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
- Quality inspection center for sericultural products, Ministry of Agriculture and Rural Affairs, Zhenjiang, China
| | - H L Huang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
| | - S L Zhang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
| | - X D Tang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
- The Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - X J Guo
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
- The Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
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Ge FF, Yang XQ, Chen YX, Huang HL, Shen XC, Li Y, Hu JM. Application of Eye Tracker in Lie Detection. Fa Yi Xue Za Zhi 2020; 36:229-232. [PMID: 32530172 DOI: 10.12116/j.issn.1004-5619.2020.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Indexed: 06/11/2023]
Abstract
Objective To investigate the application value of eye tracking in lie detection. Methods The 40 subjects were randomly divided into two groups. The pupil diameter, fixation duration, points of fixation and blink frequency of the subjects in the experimental group in observing target stimulation and non-target stimulation were recorded with eye tracker after they accomplished the mock crime. The eye movement parameters of subjects in the control group were directly collected. The differences in eye movement parameters of the experimental group and the control group in observing target stimulation and non-target stimulation were analyzed by t-test. Pearson coefficient analysis of correlation between eye movement parameters that had differences was conducted. The effectiveness of eye movement parameters to distinguish between the experimental group and the control group was calculated by the receiver operator characteristic (ROC) curve. Results Participants from the experimental group had shorter average pupil diameter, longer average fixation duration and fewer fixation points (P<0.05), but the differences in blink frequency had no statistical significance. The differences in the above indicators of the control group in observing target stimulation and non-target stimulation had no statistical significance. The average fixation duration showed a negative correlation with fixation points (r=-0.255, P<0.05); the average fixation duration showed a negative correlation with average pupil diameter (r=-0.218, P<0.05); the fixation points showed a positive correlation with average pupil diameter (r=0.09, P<0.05). The area under the curve of average pupil diameter, average fixation duration and fixation points was 0.603, 0.621 and 0.580, respectively. Conclusion The average pupil diameter, average fixation duration and fixation points obtained by the eye tracker under laboratory conditions can be used to detect lies.
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Affiliation(s)
- F F Ge
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610000, China
- West China School of Medicine, Sichuan University, Chengdu 610000, China
| | - X Q Yang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610000, China
| | - Y X Chen
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610000, China
| | - H L Huang
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610000, China
| | - X C Shen
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610000, China
| | - Y Li
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610000, China
| | - J M Hu
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610000, China
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Huang HL, Ke YJ, Yang L, Yan Q, He BC, Zhou K, Chen ZR, Guo HM, Lu C, Liu J, Huang JS. [The mid-term outcomes of minimally invasive plasty for severe tricuspid regurgitation after cardiac surgery]. Zhonghua Wai Ke Za Zhi 2019; 57:902-907. [PMID: 31826593 DOI: 10.3760/cma.j.issn.0529-5815.2019.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To evaluate the efficacy of minimally invasive surgery in patients with late severe tricuspid regurgitation after cardiac surgery, and to evaluate the role of leaflets augmentation technique in tricuspid valvuloplasty. Methods: From January 2015 to June 2019, 85 patients undergoing tricuspid valve repair procedure with minimally invasive approach at Department of Cardiovascular Surgery, Guangdong provincial People's Hospital were enrolled. There were 22 males and 63 females, aging of (53.6±12.4) years (range: 15 to 75 years). The interval between the prior and current operations was (16.0±7.3) years (range: 0.2 to 35.0 years). The diameter of right atrium and right ventricle was (77.3±17.2) mm and (61.0±8.4) mm, respectively. Tricuspid regurgitation was severe or extremely severe, the tricuspid regurgitation area was (19.0±10.3) cm(2). All patients underwent minimally invasive tricuspid valvuloplasty or tricuspid valve replacement on beating-heart with totally endoscopic technique and port-access approach through right chest wall. The operations included tricuspid valve replacement and tricuspid valvuloplasty, the technique of tricuspid valvuloplasty including leaflets augmentation with patch, ring implantation, chordae tendineaes reconstruction, release of papillary muscle, edge to edge method, etc. Postoperative hospitalization days, the time of ICU stay, blood transfusion rate, ventilator time and the results of echocardiography were recorded. Follow-up was completed regularly by WeChat, telephone and outpatient visit. Results: Sixty-five patients underwent tricuspid valve repair, and 20 patients underwent tricuspid valve replacement because of prosthetic failure and plasty failure. Five patients died during hospitalization, with mortality rate 5.9%. One patient was transferred to local hospital for anti-infection treatment, the other 79 patients were discharged from hospital in well condition and followed-up. The postoperative hospitalization time was 7.0 (5.5) days (M(Q(R))) days, the mean ventilator time was 18.0 (16.2) hours, and the mean ICU stay time was 68.0 (75.5) hours. There were 35 patients without blood conduction transfusion, the transfusion rate was only 58.9% (50/85). Four cases of severe, 9 cases of moderate and 67 cases of mild to zero tricuspid regurgitation were examined before being discharged, with tricuspid regurgitation area of (2.8±3.5) cm(2) (range: 0 to 19.1 cm(2)). The follow-up time was 1 to 38 months. Two patients died during follow-up, one patient died from infective endocarditis and mitral perivalvular leakage, the other one died of intractable right heart failure. One patient was implanted with permanent pacemaker due to Ⅲ atrioventricular block. Valvular re-replacement was performed in 2 patients who were re-admitted for the artificial valve infection and mechanical valve obstruction. No re-operation of tricuspid valve. Conclusions: Totally endoscopic minimally invasive technique provided satisfactory surgical outcomes for critically sick patients with severe tricuspid regurgitation following cardiac surgery. The application of leaflets augmentation technique achieved ideal repair effect for previously unrepairable lesions.
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Affiliation(s)
- H L Huang
- Department of Cardiovascular Surgery, Guangdong Provincial Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou 510100, China
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17
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Liang JH, Luo HL, Long F, Li L, Huang HL, Huang M, Zhang X, Mao WD. [Expression and significance of Survivin and Bcl-2 in nasal aquamous cell carcinoma]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 30:529-531. [PMID: 29871061 DOI: 10.13201/j.issn.1001-1781.2016.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the expression and it's clinical significance of Survivin and Bcl-2 in nasal squamous cell carcinoma (SNSCC). Method:The immunohistochemical Envision two step method was used to measure the expression of Survivin and Bcl-2 in 35 cases of SNSCC, 20 cases of normal inferior concha tissues. Result:The expression of Survivin in SNSCC was 88.6%, significantly higher than the normal inferior turbinate mucosal tissue expression of 0% (P<0.01). The expression of Bcl-2 in SNSCC was 71.4%, significantly higher than the normal inferior turbinate mucosal tissue expression of 25% (P<0.01). Expression of Bcl-2 was significantly higher in SNSCC than in normal tissue. The expression of Survivin was positively correlated with Bcl-2 expression (P<0.01). The higher the grade of tumor, the lower expressions of Survivin and Bcl-2. Conclusion:Survivin and Bcl-2 may play an promoting role in the development and progression process of SNSCC. Survivin may become a target spot of SNSCC gene therapy.
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Affiliation(s)
- J H Liang
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - H L Luo
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - F Long
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - L Li
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - H L Huang
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - M Huang
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - X Zhang
- Department of Otolaryngology Head and Neck Surgery,Hanzhong Central Hospital,Hanzhong,723000,China
| | - W D Mao
- Department of Pathology,Hanzhong Central Hospital
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Wang N, Zhou H, Huang HL. Comparison of automatic and manual reposition treatment for horizontal semicircular canal benign paroxysmal positional vertigo. J BIOL REG HOMEOS AG 2018; 32:719-723. [PMID: 29921405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The purpose of this investigation was to compare the efficacy of automatic to manual reposition treatment for patients with horizontal semicircular canal paroxysmal positional vertigo (BPPV). Sixty patients diagnosed with BPPV were equally and randomly divided into either a manual reposition treatment group or an automatic reposition treatment group. The groups were compared regarding difference in pain [visual analog scale (VAS)], extent of vertigo disorder [dizziness handicap inventory (DHI)], quality of life (SF-36), and therapeutic effect. Improved VAS, DHI and SF-36 were observed in both groups, however the efficacious rate of the automatic reposition group (96.7%) was 13.4% higher than that of the manual reposition group, reaching a statistical significance (p less than 0.05). In conclusion, in the treatment of BPPV patients, automatic reposition is more effective than manual reposition and can improve the patients quality of life.
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Affiliation(s)
- N Wang
- Department of Neurology, Xuzhou First Peoples Hospital, Xuzhou, Jiangsu, PR China
| | - H Zhou
- Department of Neurology, Xuzhou First Peoples Hospital, Xuzhou, Jiangsu, PR China
| | - H L Huang
- Department of Neurology, Xuzhou First Peoples Hospital, Xuzhou, Jiangsu, PR China
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Dong L, Shi YK, Xu JP, Zhang EY, Liu JC, Li YX, Ni YM, Yang Q, Han T, Fu B, Chen J, Ren L, Wei SL, Chen H, Liu KX, Yu FX, Liu JS, Xiao MD, Wu SM, Zhang KL, Huang HL, Jiang SL, Qiao CH, Wang CS, Xu ZY, Zhou XM, Wang DJ, Ni LX, Xiao YB, Jiang SL, Zhang GM, Liang GY, Yang SY, Bo P, Zhong QJ, Zhang JB, Zhang X, Zhu YB, Teng X, Zhu P, Huang F, Xiao YM, Cao GQ, Tian H, Xia LM, Lu FL, Liu YQ, Liu DX, Xu H, Yuan Y, Li M, Chang C, Wu XC, Xu Z, Guo P, Bai YJ, Xue WB, Jiang XY, Na ZH, Zeng QY, Cai H, Wang YL, Xiong R, Jin S, Zheng XM, Wu D. [The multicenter study on the registration and follow-up of low anticoagulation therapy for the heart valve operation in China]. Zhonghua Yi Xue Za Zhi 2017; 96:1489-94. [PMID: 27266493 DOI: 10.3760/cma.j.issn.0376-2491.2016.19.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the optimal anticoagulation methods and monitoring strategy for Chinese patients undergoing heart valve replacement, which is potentially quite different from western populations. METHODS In this multicenter prospective cohort study, the anticoagulation and monitoring strategy data was acquired from 25 773 in-hospital patients in 35 medical centers and 20 519 patients in outpatient clinic in 11 medical centers from January 1st, 2011 to December 31th, 2015. RESULTS As for in-hospital patients, mean age of study population was (48.6±11.2) years old; main etiology of valve pathology was rheumatic (87.5%) origin among study cohort; 94.8% of study population received mechanical valve implantation; international normalized ratio (INR) monitoring (in all the study centers) and low-intensity anticoagulation strategy (31 hospitals chose target INR range of 1.5-2.5, and actual values of INR among 89.2% of 100 069 in-hospital monitoring samples were 1.5-2.5), with mean actual INR values of 1.84±0.53, and warfarin dosage of (2.82±0.93) mg/d were widely adopted among the study centers; strategies of in-hospital warfarin administration were similar in all the study centers; complication rates of low-intensity anticoagulation strategy were low in severe hemorrhage (0.02%), thrombosis (0.05%), and thromboembolism (0.05%) events, without anticoagulation-related death.As for 18 974 outpatient clinic patients, the follow-up rate was 92.47%, with a total of 30 012 patient-years (Pty). Anticoagulation-related morbidity and mortality rates were 0.67% and 0.15% Pty; major hemorrhage morbidity and mortality rates were 0.25% and 0.13% Pty; thromboembolism morbidity and mortality rates were 0.45% and 0.03% Pty.The mean dosage of warfarin daily dosage was (2.85±1.23) mg/d and INR value was 1.82±0.57.No significant regional difference in the intensity of anticoagulation therapy was noted during the study. CONCLUSIONS INR can be used as a normalized indicator for intensity of anticoagulation therapy in China.The optimal anticoagulation intensity with INR range from 1.5 to 2.5 is safe and effective for Chinese patients with heart valve replacement, and there is no significant regional difference in the intensity of anticoagulation therapy.
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Affiliation(s)
- L Dong
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Chen HF, Yao ZH, Yan XH, Zhao L, Wang S, Lin J, Huang HL. [Comparison and application of two risk assessment methods for occupational lead exposure risk classification in a lead-acid battery enterprise]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:130-133. [PMID: 28355703 DOI: 10.3760/cma.j.issn.1001-9391.2017.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To apply and compare two risk assessment methods for occupational lead exposure risk classification in a lead-acid battery enterprise. Methods: In April 2013, an occupational health survey was carried out in a lead-acid battery enterprise. Lead smoke and lead dust were tested in the workplace. The risk assessment index system for occupational chemical hazards that was established and optimized by the research group (referred to as "optimized index system" ) , as well as the Singapore semi-quantitative risk assessment model, was used for occupational lead exposure risk classification in the lead-acid battery enterprise. The two risk classification results were analyzed and compared. Results: In the lead smoke risk classification results, the optimized index system classified the raw material group and foundry group workshops as Class I hazardous and the assembling group workshop as Class II hazardous. The Singapore semi-quantitative risk assessment model classified the raw material group workshop as high risk and foundry group and assembling group workshops as extremely high risk. In the lead dust risk classification results, the optimized index system classified the raw material group workshop as Class I hazardous, while the plate painting group, plate cutting group, and assembling group workshops were classified as Class II hazardous. The Singapore semi-quantitative risk assessment model classified the raw material group workshop as medium risk, the plate painting group and plate cutting group workshops as high risk, and the assembling group workshop as extremely high risk. Conclusion: There are some differences in risk assessment of occupational lead exposure between the two risk assessment methods. The optimized index system is comparably more reasonable and feasible, and is highly operable.
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Affiliation(s)
- H F Chen
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangdong Provincial Key Laboratory of Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
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Liu J, Guo HM, Gao Q, Chen B, Xie B, Huang HL, Liu J, Lu C, Chen JM, Zhuang J. [Clinical experience of 60 patients underwent three-dimensional video assisted thoracoscopic mitral valvuloplasty]. Zhonghua Wai Ke Za Zhi 2016; 54:605-8. [PMID: 27502135 DOI: 10.3760/cma.j.issn.0529-5815.2016.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To summarize the clinical experience of 60 patients underwent three-dimensional video assisted thoracoscopic mitral valvuloplasty. METHODS Sixty patients were enrolled retrospectively from March 2014 to January 2016 in Department of Cardiacvascular Surgery, Guangdong Cardiovascular Institute. They underwent three-dimensional video assisted thoracoscopic mitral valvuloplasty. There were 37 male and 23 female patients. The range of age was 15 to 78 years (the median age was 47 years). The techniques of mitral valvuloplasty included chordae tendineae transplantation (53 patients), annuloplasty (58 patients), posterior leaflet resection (13 patients), anterior leaflet resection (2 patients), commissure resection (1 patient). Their information from charts were collected. The follow-up time was lasting 3 to 25 months by telephone or outpatient department interview. The data was analyzed via paired t test or Wilcoxon signed-rank test. RESULTS Conversions to mitral valve replacement were performed for two patients. No patients underwent thoracotomy. The operation time was (213±37) minutes, cardiopulmonary bypass time was (129±31) minutes, aortic cross clamping time was (81±21) minutes. Postoperative hospital stay was (7±3) days. During follow-up period, there were no re-operation and no death. Mitral regurgitation level and New York Heart Association class were both improved (Z=-6.286, P=0.000, Z=-6.237, P=0.000), respectively. Besides, there was also no new atrial fibrillation patients. CONCLUSIONS Not only does three-dimensional video assisted thoracoscopic mitral valvuloplasty maintain the advantages of 2-Dimensional thoracoscopy, but also have the similar view of median thoracotomy. This technique showed promising clinical value in the future.
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Affiliation(s)
- J Liu
- Department of Cardiacvascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Lin N, Lin Y, Huang HL, Lin XL, He DQ, He SQ, Guo DH, Li Y, Xu LP. [Prenatal diagnosis of Thailand deletion of α-thalassemia 1 families]. Zhonghua Yi Xue Za Zhi 2016; 96:1919-22. [PMID: 27373361 DOI: 10.3760/cma.j.issn.0376-2491.2016.24.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To conduct analysis and prenatal diagnosis on 11 couples carrying Thailand deletion (--(THΑI)) α-thalassemia 1, so as to provide information for clinical genetic counseling on α-thalassemia 1. METHODS Altogether 11 Thailand deletion (--(THΑI)) α-thalassemia 1 families were collected from Fujian Maternal and Children Health Hospital from May 2009 to September 2015. Gap-polymerase chain reaction (gap-PCR) and reverse dot blot (RDB) technology were used to detect the thalassemia mutations in the couples and fetuses. RESULTS In one family, Thailand deletion α-thalassemia 1 was detected in both the pregnant woman and her husband. In 10 families, Thailand deletion α-thalassemia 1 was detected in either the pregnant women or the husband, while the spouses had α-thalassemia heterozygote (1 combined with β thalassemia heterozygote). Thailand deletion α-thalassemia 1 family members all had lower mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH). In prenatal diagnosis of the 12 fetuses, 4 fetuses were found with hemoglobin(Hb) Bart's hydrops fetalis syndrome, 5 were with α-thalassemia heterozygote, and 3 were normal. CONCLUSIONS For couples with positive hematological phenotype but normal results in routine genetic examination of α-thalassemia, attention should be paid especially for with a history of having babies of hydrops fetalis syndrome or hemoglobin H disease. It is necessary to consider the possibility of the rare Thailand deletion (--(THΑI)) α-thalassemia 1. Prenatal diagnosis for high-risk families plays an important role.
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Affiliation(s)
- N Lin
- Center of Prenatal Diagnosis, Fujian Matenal and Children Health Hospital, Fujian Medical University Teaching Hospital, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou 350001, China
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Zhu P, Zhao MY, Li XH, Fu Q, Zhou ZF, Huang CF, Zhang XS, Huang HL, Tan Y, Li JX, Li JN, Huang S, Ashraf M, Lu C, Chen JM, Zhuang J, Guo HM. Effect of low temperatures on BAX and BCL2 proteins in rats with spinal cord ischemia reperfusion injury. Genet Mol Res 2015; 14:10490-9. [PMID: 26400280 DOI: 10.4238/2015.september.8.10] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We evaluated changes in BAX and BCL2 expression levels after spinal cord ischemia/reperfusion injury (SCII) and hypothermia during operations in rats. Eighty rats were divided into four groups: Group A (N = 20, 18°C); Group B (N = 20, 28°C); Group C (N = 20, room temperature); and Group D (N = 20, sham operation control). Spinal cord ischemia was induced for 90 min. Hypothermia was induced 15 min before, and maintained during ischemia, followed by heating to normothermia for 30 min after reperfusion. Motor function of the lower limbs was evaluated according to the Tarlov score at 72 and 168 h. For each rat, spinal cord samples were taken at 6, 24, 72 h, and 1 week to evaluate the histopathological changes, neuronal apoptosis, and BAX and BCL2 expression levels. Compared with normothermia, hypothermia significantly improved hind limb function; Group B achieved a higher score than Group A. Group D showed no neurologic deficiency, while the other groups showed various degrees. Group C exhibited greater neuronal apoptosis, higher BAX expression, but lower BCL2 expression than the other groups. Compared with Group A, BAX was expressed less and BCL2 more in Group B, and there was less apoptosis in Group B. Hypothermia preserves hind limb motor function and reduces neuronal death, thereby protecting rats from SCII. The spinal cord may be protected from SCII by inhibition of BAX and activation of BCL2. However, deep hypothermia may inhibit the expression of BCL2, resulting in a worse outcome than mild hypothermia.
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Affiliation(s)
- P Zhu
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - M Y Zhao
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - X H Li
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Q Fu
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Z F Zhou
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - C F Huang
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - X S Zhang
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - H L Huang
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Y Tan
- Department of Pharmacology, UIC College of Medicine, Chicago, IL, USA
| | - J X Li
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - J N Li
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - S Huang
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - M Ashraf
- Department of Pharmacology, UIC College of Medicine, Chicago, IL, USA
| | - C Lu
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - J M Chen
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - J Zhuang
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - H M Guo
- Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
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Cui JJ, Tian Y, Liu Y, Huang HL, Jin Y. Proacrosin activation mechanisms in capacitated and frozen-thawed boar spermatozoa. Genet Mol Res 2014; 13:9915-20. [PMID: 25501202 DOI: 10.4238/2014.november.27.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The main objective of the current study was to explore the different activation mechanisms of capacitation and freeze-thawed spermatozoa. Using SDS-PAGE and Western blotting, the conversion process of boar proacrosin during freeze-thawing and capacitation of spermatozoa was analyzed. The results revealed that capacitated spermatozoa exhibited a greater fluorescence area than that of the freeze-thawed spermatozoa, which were smaller than those of the fresh group. Fresh spermatozoa displayed 45- and 35- kDa protein bands, while those of freeze-thawed andcapacitated spermatozoa displayed 45-, 35- and 28-kDa bands. In summary, these data indicate that proacrosin is activated, thus becoming α- and β-acrosins and a 28-kDa protein during capacitation and freeze-thawing.
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Affiliation(s)
- J J Cui
- Agricultural College of Yanbian University, Yanji, Jinlin, China
| | - Y Tian
- Agricultural College of Yanbian University, Yanji, Jinlin, China
| | - Y Liu
- Agricultural College of Yanbian University, Yanji, Jinlin, China
| | - H L Huang
- Agricultural College of Yanbian University, Yanji, Jinlin, China
| | - Y Jin
- Agricultural College of Yanbian University, Yanji, Jinlin, China
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Dong WW, Huang HL, Yang W, Liu J, Yu Y, Zhou SL, Wang W, Lv XC, Li ZY, Zhang MY, Zheng ZH, Yan W. Testis-specific Fank1 gene in knockdown mice produces oligospermia via apoptosis. Asian J Androl 2014; 16:124-30. [PMID: 24369145 PMCID: PMC3901870 DOI: 10.4103/1008-682x.122592] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Fank1 is exclusively expressed in the testis from the meiosis phase to the haploid phase of spermatogenesis. In this study, we examined the function of Fank1 by establishing a Fank1-knockdown transgenic mouse model. The apoptotic statuses of the testes of the transgenic mice were tested using the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) method. The FANK1 consensus DNA-binding sequence was identified using cyclic amplification of sequence target (CAST) analysis. Differentially expressed genes were examined using microarray analysis. A reduction in sperm number and an increase in apoptotic spermatocytes were observed in Fank1-knockdown mice, and the apoptotic cells were found to be primarily spermatogonia and spermatocytes. The CAST results demonstrated that the consensus DNA-binding sequence was AAAAAG, in which the percentage occurrence of each base at each position ranged from 55 to 86%. This sequence was present in the promoter regions of 10 differentially expressed genes that were examined using microarray analysis. In total, 17 genes were differentially expressed with changes in their expression levels greater than twofold. The abnormal expression of Fank1 target genes that were regulated directly or indirectly by Fank1 reduced the number of sperm in the knockdown mice. Thus, FANK1 may play a pivotal role in spermatogenesis as a transcription factor.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Zhi-Hong Zheng
- Laboratory Animal Centre; Department of Pathology and Pathophysiology Research, China Medical University, Shenyang, China
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26
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Abstract
To explore the relationship between Myf5 gene polymorphisms and production performance traits in Songliao white geese, we used the chicken Myf5 sequence to design primers and amplified part of the exon 1 sequence of the Songliao white goose Myf5 gene. Results of single-strand conformation polymorphism polymerase chain reaction analysis revealed polymorphisms of the amplified fragment, including three genotypes (AA, AB, and BB). Three varieties were dominated by allele A and were mainly expressed in AA genotypes. We also identified that the Myf5 gene has one single nucleotide change (A→G) on exon 1 at locus 1344, and another (G→C) at locus 1410. Analysis of variance showed significant differences between genotypes before slaughter in live weight, carcass weight, eviscerated weight, leg muscle weight, weight of the wings, and slaughter rate. There were no significant differences with respect to other growth and carcass traits evaluated.
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Affiliation(s)
- J B Wu
- Agricultural College of Yanbian University, Yanji, China
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Abstract
BACKGROUND Returning to work has been recognized as an indicator of functional recovery. Few studies have aimed to explore whether one's type of work changes after transplantation. PURPOSE This study aims to describe the change in types of work in liver transplant patients. METHODS A retrospective and descriptive study was conducted at a medical center in northern Taiwan. The data were collected by a self-report questionnaire between July and September 2010. Descriptive statistics an correlational analysis were used to analyze the data. RESULTS A convenience sample of 111 adult liver transplant patients was included in this study. Of the sample, 20 patients remained unemployed, 44 had a change in status by becoming unemployed (n=42) or employed (n=2), and 47 patients remained employed after transplantation. At the time of data collection, 49 (44.1%) liver transplant patients were gainfully employed, a rate that was lower than that of the pretransplantation stage (n=89, 80.2%). The number of workers engaged in manual labor decreased from 40 to 18 between pre- and posttransplantation. Of the 47 still-employed patients, 6 (12.8%) changed their occupation after transplantation. CONCLUSION The rate of gainful employment after liver transplantation was low, and those patients who had done manual labor pretransplantation were no longer able to do this type of work and were unemployed. The still-employed patients who worked in management or were professionals did not change their type of work after transplantation; however, service and labor workers did change their type of work.
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Affiliation(s)
- L-C Weng
- School of Nursing, Chang Gung University, and Liver Research Center, Department of General Surgery, Chang Gung Medical Foundation-Chang Gung Memorial Hospital, Taoyuan, Taiwan
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28
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Abstract
Beta-blockers are recommended as first-line symptomatic treatment for stable angina. However, their impact on mortality outside the context of myocardial infarction is unknown. We performed a meta-analysis of all randomized trials of beta-blockers in stable angina. Medical databases and cardiology journals were searched for relevant randomized clinical trials. The primary outcome was cardiovascular mortality, separately considering trials of beta-blockers versus placebo and beta-blockers versus other antianginals. We conducted a subgroup analysis on cardioselective versus non-cardioselective beta-blockers and calcium channel antagonists versus nitrates. We calculated odds ratios (ORs) and confidence intervals (CIs) using Peto's method. We found no statistically significant evidence that beta-blockers impact on mortality when compared with placebo (OR, 0.42; CI, 0.15–1.21) or other antianginals (OR, 0.98; CI, 0.86–1.10), or all others (OR, 0.97; CI, 0.86–1.09). There was a trend for cardioselective beta-blockers to have a greater improvement in mortality when compared with placebo and to have greater impact than non-calcium channel antagonists. Beta-blockers do not have statistically significant impact on mortality versus placebo or versus other active comparators. The findings exclude a benefit of 15% or greater and a hazard of 10% or greater. The impact of cardioselectivity requires further study.
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Affiliation(s)
- H L Huang
- University of Edinburgh, Edinburgh, Scotland, UK
| | - K A A Fox
- President of British Cardiovascular Society, Professor of Cardiology, Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, Scotland, UK
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Li D, Tang GP, Li JZ, Kong Y, Huang HL, Min LJ, Zhou J, Shen FP, Wang QQ, Yu H. Dual-targeting non-viral vector based on polyethylenimine improves gene transfer efficiency. Journal of Biomaterials Science, Polymer Edition 2012; 18:545-60. [PMID: 17550658 DOI: 10.1163/156856207780852532] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polyethylenimine (PEI) is the polymer most commonly used for transferring plasmids into eukaryotes, but its gene-transfer efficiency is lower compared to viral vectors. Receptors targeting PEI combined with ligands can enhance efficiency of gene transfer into the corresponding receptor-positive cells. Using the double-receptor-mediated pathway of viral infection, in this study we synthesized a novel non-viral vector based on PEI combined with two peptides recognizing FGF receptors (peptide YC25) and integrins (peptide CP9) on the cell surface. The dual targeting vector showed a physicochemical character similar to that of PEI, such as pDNA formation, particle size, zeta potential and lower toxicity. In vitro gene transfer showed that the dual-receptor targeted vector (YC25-PEI-CP9) exhibited a markedly higher transgene efficiency in cell lines with positive expression of FGF receptors and integrins, compared with single-peptide-modified PEI or unmodified PEI. In the cells with only integrin-positive expression, YC25-PEI-CP9 mediated a higher transgene expression than PEI but lower than CP9-PEI. The corresponding free peptides could inhibit the transgene efficiency of the peptide-coupled PEI. In vivo gene transfer in tumor-bearing nude mice also demonstrated that the dual-targeting vectors showed a significantly enhanced transfection efficiency in tumors with positive expression of FGF receptors and integrins. The synthesized polymer YC25-PEI-CP9 has the prospect to act as a novel kind of non-viral vector in gene therapy.
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Affiliation(s)
- D Li
- Institute of Immunology, Zhejiang University, 388 Yuhangtang Road, Hangzhou 310058, P. R. China
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30
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Abstract
BACKGROUND The prevalence of the metabolic syndrome (MetS) is high among the elderly. However, evidence that mortality increases with MetS is rare. In this study, we investigated the relationship between MetS, cardiovascular disease (CVD) and all cause mortality in the elderly. MATERIALS AND METHODS A total 10 547 participants, aged 65 years and older, of baseline cohort were recruited from four nationwide Health Screening Centres in Taiwan from 1998 to 1999. The metabolic syndrome was defined according to the America Heart Association/National Heart Lung Blood Institute definition. Cox proportional hazards regression analyses were used to estimate the relative risks (RRs) of CVD and all cause mortality for those with MetS for up to 8 years of follow-up. RESULTS The baseline prevalence of MetS was 50.1% (45.6% in men and 54.4% in women, respectively). A total of 1312 participants died; of these, 300 participants died from CVD. Adjusted for age, gender, smoking, total cholesterol and estimated glomerular filtration rate, the RRs for CVD and all cause mortality among participants with MetS were 1.48 (95% confidence interval = 1.16-1.90) and 1.16 (1.03-1.30), respectively, for participants compared to those without MetS. The mean RRs for CVD, however, ranged from 1.21 to 5.31 among different combinations of MetS components. CONCLUSION The elderly with MetS, compared to those without MetS, had a higher CVD and all cause mortality in Taiwan. Furthermore, different combinations of MetS components posed different risks to the mortality, which deserves further research in the future.
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Affiliation(s)
- C J Wen
- Department of Family Medicine, National Taiwan University Hospital, Taipei, Taiwan
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31
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Yang KT, Lin CY, Huang HL, Liou JS, Chien CY, Wu CP, Huang CW, Ou BR, Chen CF, Lee YP, Lin EC, Tang PC, Lee WC, Ding ST, Cheng WTK, Huang MC. Expressed transcripts associated with high rates of egg production in chicken ovarian follicles. Mol Cell Probes 2007; 22:47-54. [PMID: 17692502 DOI: 10.1016/j.mcp.2007.06.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2006] [Revised: 04/06/2007] [Accepted: 06/12/2007] [Indexed: 11/16/2022]
Abstract
The purpose of this study was to characterize differentially expressed transcripts associated with varying rates of egg production in Taiwan country chickens. Ovarian follicles were isolated from two strains of chicken which showed low (B) or high (L2) rates of egg production, then processed for RNA extraction and cDNA library construction. Three thousand and eight forty clones were randomly selected from the cDNA library and amplified by PCR, then used in microarray analysis. Differentially expressed transcripts (P<0.05, log(2)> or = 1.75) were sequenced, and aligned using GenBank. This analysis revealed 20 non-redundant sequences which corresponded to known transcripts. Eight transcripts were expressed at a higher level in ovarian tissue prepared from chicken strain B, and 12 transcripts were expressed at a higher level in L2 birds. These differential patterns of expression were confirmed by semi-quantitative RT-PCR. We show that transcripts of cyclin B2 (cycB2), ferritin heavy polypeptide 1 (FTH1), Gag-Pol polyprotein, thymosin beta4 (TB4) and elongation factor 1 alpha1 (EEF1A1) were enriched in B strain ovarian follicles. In contrast, thioredoxin (TXN), acetyl-CoA dehydrogenase long chain (ACADL), inhibitor of growth family member 4 (ING4) and annexin II (ANXA2) were expressed in at higher levels in the L2 strain. We suggest that our approach may lead to the isolation of effective molecular markers that can be used in selection programs in Taiwan country chickens.
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Affiliation(s)
- K T Yang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
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32
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Liu MX, Yin CC, Chun L, Huang HL. [Cloning and expression in Escherichia coli of secondary lymphoid-tissue chemokine (SLC) gene]. Sheng Wu Gong Cheng Xue Bao 2007; 23:352-7. [PMID: 17460916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Secondary lymphoid-tissue chemokine (SLC) is a type of CC chemokine identified by searching the Expressed Sequence Tag (EST) database. The full-length SLC gene was synthesized based on human SLC sequence using SOE-PCR. The sequenced SLC gene was cloned into expression vector pTMF and pALM, which used to transform Escherichia coli. Then the E. coli was cultured and induced according to protocol. The expressed target protein was identified by Western blotting. The target protein was expressed as soluble protein as well as inclusion bodies, the ratio of these two forms target protein varied with the difference conditions of culture and induction. The target protein was purified with the methods of nickel-nitrilotriacetic acid (Ni-NTA) metal-affinity chromatography. The results of electrophoresis of the purified target protein showed that the molecular weight was larger than the predicted molecular weight.
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Affiliation(s)
- Ming-Xue Liu
- Life Science and Engineering College, Southwest University of Science and Technology, Mianyang 621000, China.
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33
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Huang GL, Huang HL, Zhang HC, Wang PG. Structure-function relations of carbohydrates by neoglycolipid arrays. Appl Biochem Biotechnol 2006; 133:211-6. [PMID: 16720902 DOI: 10.1385/abab:133:3:211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2005] [Revised: 10/19/2005] [Accepted: 10/30/2005] [Indexed: 11/11/2022]
Abstract
The work presented herein is a new noncovalent glycoarray assembly method for microplates created by simply mixing together a carbohydrate and a tetradecylamine. alpha-D-Mannopyranoside, alpha-D-glucopyranoside, and alpha-D-galactopyranoside were utilized in model studies and product formations were detected by lectin binding. The method can be extended to study the steric hindrance effect of carbohydrate-protein interactions, namely the structure-function relations of carbohydrates.
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Affiliation(s)
- Gang-Liang Huang
- School of Life Science, Shandong University, Jinan City, Jinan 250100, China.
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34
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Wu CP, Huang HL, Asl MN, He JW, Gillis J, Skinner FK, Zhang L. Spontaneous rhythmic field potentials of isolated mouse hippocampal-subicular-entorhinal cortices in vitro. J Physiol 2006; 576:457-76. [PMID: 16887877 PMCID: PMC1890361 DOI: 10.1113/jphysiol.2006.114918] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The rodent hippocampal circuit is capable of exhibiting in vitro spontaneous rhythmic field potentials (SRFPs) of 1-4 Hz that originate from the CA3 area and spread to the CA1 area. These SRFPs are largely correlated with GABA-A IPSPs in pyramidal neurons and repetitive discharges in inhibitory interneurons. As such, their generation is thought to result from cooperative network activities involving both pyramidal neurons and GABAergic interneurons. Considering that the hippocampus, subiculum and entorhinal cortex function as an integrated system crucial for memory and cognition, it is of interest to know whether similar SRFPs occur in hippocampal output structures (that is, the subiculum and entorhinal cortex), and if so, to understand the cellular basis of these subicular and entorhinal SRFPs as well as their temporal relation to hippocampal SRFPs. We explored these issues in the present study using thick hippocampal-subicular-entorhinal cortical slices prepared from adult mice. SRFPs were found to spread from the CA1 area to the subicular and entorhinal cortical areas. Subicular and entorhinal cortical SRFPs were correlated with mixed IPSPs/EPSPs in local pyramidal neurons, and their generation was dependent upon the activities of GABA-A and AMPA glutamate receptors. In addition, the isolated subicular circuit could elicit SRFPs independent of CA3 inputs. We hypothesize that the SRFPs represent a basal oscillatory activity of the hippocampal-subicular-entorhinal cortices and that the subiculum functions as both a relay and an amplifier, spreading the SRFPs from the hippocampus to the entorhinal cortex.
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Affiliation(s)
- C P Wu
- Room 13-411, Toronto Western Hospital, 399 Bathurst Street, Toronto, Ontario, Canada
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35
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Sun ML, Piao JH, Yin CC, Yang GS, Huang HL. [A preliminary study of the structure prediction and expression of SARS-CoV spike protein]. Yi Chuan 2005; 27:623-8. [PMID: 16120590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In this study, the encoding sequences of SARS-CoV spike protein were analyzed by bioinformatics methods, the structural characteristics and functions were forecasted based on available data. It suggests that the fragment of spike glycoprotein (S401-659) may be crucial for viral attachment and may be a major immunodominant epitope. Then the fragment was amplified and subcloned into expression vector pET28a(+) and pPIC9K. These two plasmids pET28a(+)-S and pPIC9K-S were transformed to E.coli strain BL21(DE3)-star and Pichia pastoris, respectively. SDS-PAGE and Western blot analysis showed that the recombinant protein was successfully expressed. The denatured inclusion bodies were purified with Ni-NTA chelate agarose and its purity can reach 90%.
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Affiliation(s)
- Mei-Ling Sun
- College of Animal Science and Technology , Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi, 712100, China.
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36
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Wu CP, Cheung G, Rakhshani N, Parvardeh S, Asl MN, Huang HL, Zhang L. Ca3 neuronal activities of dorsal and ventral hippocampus are differentially altered in rats after prolonged post-ischemic survival. Neuroscience 2005; 130:527-39. [PMID: 15664709 DOI: 10.1016/j.neuroscience.2004.09.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2004] [Indexed: 10/26/2022]
Abstract
The aim of the present study is to explore the potential hyper-excitability of hippocampal CA3 neurons in rats after prolonged post-ischemic survival. We conducted 15-min four-vessel-occlusion ischemic episodes in rats, allowed these animals to survive for approximately 8 months and then examined the basic morphological features and population synaptic activities of CA3 neurons. In fixed tissue sections obtained from dorsal hippocampi of post-ischemic rats, we observed a complete loss of the CA1 neurons together with a shrunken CA1 sector. Extracellular recordings in slices revealed that the overall synaptic activities of dorsal hippocampal CA3 neurons were decreased in post-ischemic rats compared with sham-operated controls. Both sham control and post-ischemic ventral hippocampal neurons were capable of exhibiting intermittent spontaneous field potentials in slices. These spontaneous field potentials spread from the CA3 to the CA1 area and their generation relied on the activity of glutamate alpha-amino-3-hydroxy-5-methyl-4 isoxazole proprionic acid (AMPA) receptors. The propensity for displaying these spontaneous field potentials appeared to be greater in post-ischemic slices than sham control slices. Our data suggest that the hyper-excitability of the post-ischemic hippocampus, if it occurs, may preferentially take place in the ventral CA3 circuitry.
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Affiliation(s)
- C P Wu
- Toronto Western Research Institute, University Health Network, Room 13-411, Toronto Western Hospital, 399 Bathurst Street, Toronto, Ontario, Canada M5T 2S8
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Chang SH, Wang C, Chen CC, Huang HL, Chern MS, Hsieh IC. The transient appearance of collateral circulation during coronary spasm. Int J Clin Pract 2005:12-4. [PMID: 15875610 DOI: 10.1111/j.1368-504x.2005.00268.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
This article reports a case of transient augmentation of collateral circulation due to spontaneous coronary arterial spasm during angiography. The patient's electrocardiogram revealed ST-segment depression during vasospastic attack; this depression differs from the typical change of the ST-segment elevation in coronary spasm without collateral circulation.
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Affiliation(s)
- S H Chang
- Second Section of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Tao Yuan, Taiwan
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38
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Chun L, Yin CC, Song JZ, Liu MX, Piao JH, Lin Q, Wang XB, Huang HL. Soluble Expression of Recombinant Human Secondary Lymphoid Chemokine (SLC) in E. coli and Research on Its In Vitro and In Vivo Bioactivity. J Biochem 2004; 136:769-76. [PMID: 15671487 DOI: 10.1093/jb/mvh186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Secondary lymphoid tissue chemokine (SLC) is a CC chemokine that plays an important role in leukocytes homing to lymphoid tissues. The ability of SLC to co-localize both T cells and dendritic cells formed the rationale to evaluate its utility in cancer immunotherapy. The in vivo antitumor effect of murine SLC (mSLC) has been well documented, but little is known about that of human SLC (hSLC). To investigate the antitumor efficiency in vivo of hSLC, the hSLC gene was artificially synthesized and induced to express as a soluble form in Escherichia coli. After purification, the purity of the recombinant human SLC (rhSLC) protein was above 95% by SDS-PAGE analysis. The K(d) of rhSLC binding to peripheral blood lymphocytes (PBLs) was 0.2186 +/- 0.02675 microM as assessed by FACS, and the maximal chemotactic index of rhSLC was 9.49 at 100 nM as assessed by in vitro chemotaxis assay. Then genomic sequences of hSLC and mSLC, and of human CCR7 (hCCR7) and murine CCR7 (mCCR7), the receptor for SLC, were aligned. It was found that hSLC and mSLC share 70.72% identity and hCCR7 and mCCR7share 86.77% identity. Furthermore, we found that rhSLC could chemoattract murine peripheral blood mononuclear cells (PBMCs) in vitro. On the basis of these facts, immune competent mice inoculated with S180 sarcoma cells were chosen as an in vivo model. Intratumoral injections of rhSLC inhibited tumor growth and increased survival. These findings suggest that, despite its incapability to bind to either human or murine CXCR3, which is related to angiostasis, rhSLC can induce an antitumor response in vivo by another route. This report proves that rhSLC has a potent tumor-inhibition ability that makes it a promising candidate agent in cancer immunotherapy.
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MESH Headings
- Adult
- Angiogenesis Inhibitors/immunology
- Angiogenesis Inhibitors/metabolism
- Angiogenesis Inhibitors/therapeutic use
- Animals
- Chemokine CCL21
- Chemokines, CC/immunology
- Chemokines, CC/metabolism
- Chemokines, CC/therapeutic use
- Escherichia coli/genetics
- Escherichia coli/metabolism
- Genetic Therapy
- Humans
- In Vitro Techniques
- Lymphocytes/immunology
- Lymphocytes/metabolism
- Lymphocytes/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred ICR
- Mice, SCID
- Receptors, Chemokine/metabolism
- Recombinant Proteins/therapeutic use
- Research
- Sarcoma, Experimental/immunology
- Sarcoma, Experimental/metabolism
- Sarcoma, Experimental/prevention & control
- Survival Rate
- T-Lymphocytes/immunology
- Tumor Cells, Cultured
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Affiliation(s)
- Lei Chun
- The Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 100101, Beijing, China
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39
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Wang XB, Zhou B, Yin CC, Lin Q, Huang HL. A New Approach for Rapidly Reshaping Single-Chain Antibody In Vitro by Combining DNA Shuffling with Ribosome Display. J Biochem 2004; 136:19-28. [PMID: 15269236 DOI: 10.1093/jb/mvh083] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Antibody reshaping is an effective way to reduce the immunogenicity while maintaining or improving the affinity of murine antibodies. This paper describe a new in vitro approach for rapidly reshaping murine antibodies by combining DNA shuffling with ribosome display. With the new method, a reshaping anti-4-1BB single-chain antibody (scFv), Re-4B4-1 scFv, which bound to its antigen (4-1BB) specifically and strongly, was selected from a reshaping library. These results proved definitely the feasibility of the new designed approach for antibody reshaping.
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Affiliation(s)
- Xiang-Bin Wang
- Institute of Genetics and Developmental Biology, Chinese Academy of Science, Beijing, 100101, China
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40
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Yang H, He D, Chao K, Lin Q, You S, Huang HL. [Studies of the expression, purification, renaturation and biologic activity of an anti-CEA immunotoxin]. Sheng Wu Gong Cheng Xue Bao 2004; 20:348-51. [PMID: 15971603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A recombinant immunotoxin named CEA/PE38/KDEL was constructed, which was composed of anti-CEA single-chain Fv and the truncated and modified form of Pseudomonas exotoxin (PE38/KDEL). The CEA/PE38/KDEL immunotoxin was expressed in the E. coli strain BL21 (DE3)-star as inclusion bodies. The denatured inclusion bodies were purified with Ni-NTA chelate agarose, then the constant gradient dialysis was used to perform the refolding of the CEA/PE38/KDEL immunotoxin. Results of FACS and MTT assay indicate that the refolded immunotoxins keep potent and specific cytotoxicity to tumor cells bearing CEA antigens.
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Affiliation(s)
- Hui Yang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110015, China
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41
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Wang XB, Zhao BF, Zhao Q, Piao JH, Liu J, Lin Q, Huang HL. A New Recombinant Single Chain Trispecific Antibody Recruits T Lymphocytes to Kill CEA (Carcinoma Embryonic Antigen) Positive Tumor Cells In Vitro Efficiently. J Biochem 2004; 135:555-65. [PMID: 15115782 DOI: 10.1093/jb/mvh065] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Anti-tumor associated antigen (TAA).CD3.CD28 trispecific antibody(TsAb) is able to provide two signals for fully and continuously activation of T lymphocytes and recruit them around tumor cells, presenting an attractive concept in tumor immunotherapy. Here, a new single chain trispecific antibody (scTsAb), named CEA-scTsAb, was constructed by fusion of anti-CEA (Carcinoma Embryonic Antigen) single chain antibody (scFv), anti-CD3 scFv and anti-CD28 VH, spaced by polypeptide interlinkers taken from the fragment of constant region (FC) of human IgG and human serum albumin (HSA). It was expressed in Escherichia coli at low temperature (30 degrees C) with up to 50% of the antibody being present in soluble form. After one step of DEAE anion chromatography, the soluble product was sufficiently pure for further in vitro activity assays. First, it was proved that CEA-scTsAb could recognize three antigens (CEA, CD28 and Jurkat cell membrane antigen) specifically and could distinguish antigen positive cells from antigen negative cells in vitro. Then fresh PBMC (peripheral blood mononuclear cells), without being pre-treated by co-stimulatory reagents, such as IL-2 or CD28 mAb, were used as effector cells to test their ability to mediate tumor specific cytolysis of CEA-positive tumor cells, SW1116. It was found by photomicrography that T lymphocytes were attracted to SW1116 cells in the presence of CEA-scTsAb, which resulted in effective cytolysis of tumor cells. As shown by MTT assay, the efficacy of tumor specific cytolysis mediated by CEA-scTsAb related to both the quantity and activation of PBMC. At an effector cells/target cells ratio (E/T) of 5, it was proved by dual-color FACS with propidium iodide (PI) and FITC-annexin V that both necrosis and apoptosis of tumor cells were causes of tumor specific cytolysis. In summary, a new single chain trispecific (CEA x CD3 x CD28) antibody was constructed and characterized carefully in this paper and was found to possess functions: (i) to activate T lymphocytes independently of additional co-stimulatory signal, (ii) to attract activated T lymphocytes around CEA-positive tumor cells, (iii) to attack CEA-positive tumor cells with recruited T lymphocytes. Because it recognizes a widely distributed tumor antigen (CEA), with moderate molecular weight (about 75 kDa) and a simple production procedure, and is able to mediate a high level of tumor specific cytolysis without any additional co-stimulating reagents, CEA-scTsAb is very promising for the task of immunotherapy in future.
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MESH Headings
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Apoptosis/immunology
- CD28 Antigens/immunology
- CD3 Complex/immunology
- Carcinoembryonic Antigen/immunology
- Cell Line, Tumor
- Chromatography, Ion Exchange
- Coculture Techniques
- Cytotoxicity, Immunologic/drug effects
- Cytotoxicity, Immunologic/immunology
- Electrophoresis, Polyacrylamide Gel
- Enzyme-Linked Immunosorbent Assay
- Escherichia coli/genetics
- Flow Cytometry
- Gene Expression
- Genetic Vectors/genetics
- Humans
- Immunoglobulin Fc Fragments/genetics
- Immunoglobulin Fragments/genetics
- Immunoglobulin Heavy Chains/genetics
- Immunoglobulin Variable Region/genetics
- Jurkat Cells
- Leukocytes, Mononuclear/drug effects
- Leukocytes, Mononuclear/immunology
- Lymphocyte Activation/immunology
- Necrosis/immunology
- Polymerase Chain Reaction
- Recombinant Fusion Proteins/immunology
- Recombinant Fusion Proteins/isolation & purification
- Recombinant Fusion Proteins/pharmacology
- Serum Albumin/genetics
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
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Affiliation(s)
- Xiang-Bin Wang
- The Institute of Genetics and Developmental Biology, Chinese Academy of Science, 100101, Beijing, China
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42
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Fang M, Zhao R, Yang Z, Zhang Z, Li H, Zhang XT, Lin Q, Huang HL. Characterization of an anti-human ovarian carcinomaxanti-human CD3 bispecific single-chain antibody with an albumin-original interlinker. Gynecol Oncol 2004; 92:135-46. [PMID: 14751149 DOI: 10.1016/j.ygyno.2003.10.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The objective of this study was to determine the properties of a single-chain bispecific antibody (scBsAb) against human ovarian carcinoma and to develop this agent for potential use in human ovarian cancer. METHODS ELISA and FACS were performed to determine the antigen-binding properties of the scBsAb. Its abilities to retarget the pre-activated human peripheral blood mononuclear cells (PBMCs) to human ovarian carcinoma cell line SKOV3 cells and mediate their lysis in vitro were performed by a colorimetric MTT-based assay. Nude mice bearing human SKOV3 tumor xenografts were used to study the distribution and imaging of the scBsAb. Its pharmacokinetics in vivo was also studied in naive BALB/c mice. RESULTS The scBsAb showed nearly identical ligand binding properties at each site relative to the individual monovalent single-chain antibody prototype molecules and could bridge SKOV3 and human T cell line Jurkat, which expresses CD3 antigens on the surface of cells together. It can also retarget the pre-activated PBMCs to SKOV3 cells and mediated their lysis in vitro effectively. Imaging and distribution study demonstrated that the antibody could target the tumor. Its elimination in vivo corresponded to second-order kinetics with a terminal half-life time (t(1/2)beta) of 7.7 h. CONCLUSION This scBsAb with easy production and reasonable blood retention time should be developed for potential use in human ovarian cancer.
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Affiliation(s)
- Min Fang
- Group 102, Institute of Genetics and Developmental Biology, Academia Sinica, Beijing 100101, China
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43
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Yu XC, Jiang X, Huang HM, Zhang Z, Lin Q, Guan XH, Huang HL. [Gene cloning, construction and expression of single-chain Fv (scFv) against the membrane protein of Schistosoma japonicum]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:135-40. [PMID: 12571935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To construct single chain antibody specific to membrane protein of Schistosoma japonicum by genetic engineering technique. METHODS The VH (heavy-chain variable region) and VL(light-chain variable region) genes were amplified by PCR from the genomic DNA of NP11-4 cell line, and sequenced by Sanger's method. The ScFv was constructed in pTHA90 vector using VH and VL genes, then expressed by IPTG. RESULTS The VH and VL genes were obtained through PCR. The DNA sequences showed that VH and VL were new variable region genes of antibody. They were registered by GenBank. A ScFv gene with (Gly4Ser) 3 intralinker in the pTHA90 vector was successfully constructed. The ScFv was expressed as thioredoxin-fused proteins about 36.2 kDa. CONCLUSION A specific ScFv against the membrane protein of Schistosoma japonicum was constructed and expressed.
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Affiliation(s)
- X C Yu
- Institute of Genetics, Chinese Academy of Sciences, Beijing 100101
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44
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Yin CC, Wang SZ, Lin ZH, Wang XB, Liu J, Huang HL. [An efficient approach to the synthesis of a high-quality random peptide repertoire]. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2003; 35:921-4. [PMID: 14515210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
During the construction of a random peptide repertoire using degenerate models, unexpected amino acids or stop codons are almost unavoidable. To conquer this shortcoming, a new split-mix-split method of oligonucleotide synthesis was developed. A 13-amino acids random peptide library had been constructed by using this method. The sequencing results of 16 clones indicated that neither stop codon nor codon for cysteine appeared as designed. The occurrence rations of 19 amino acids were also calculated and no obvious amino acid bias had been observed. By using this method, the type and quantity of amino acid at certain position of a peptide could be controlled well, so this split-mix-split method, combined with degenerate could meet the needs of a high diversity random peptide library.
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Affiliation(s)
- Chang-Cheng Yin
- Institute of Genetics and Developmental Biology, the Chinese Academy of Sciences, Beijing 100101, China.
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45
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Ku CC, Wang HP, Lee PH, Hsiao MC, Huang HL, Wang HC. Speciation of chromium in an electroplating sludge during thermal stabilization. Bull Environ Contam Toxicol 2003; 71:860-865. [PMID: 14672143 DOI: 10.1007/s00128-003-0215-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- C C Ku
- Department of Environmental Engineering, National Cheng Kung University, Tainan, Taiwan, Republic of China
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46
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Wang HC, Wang HP, Peng CY, Liu HL, Huang HL. X-ray absorption spectroscopic studies of As-humic substances in the ground water of the Taiwan blackfoot disease area. Bull Environ Contam Toxicol 2003; 71:798-803. [PMID: 14672134 DOI: 10.1007/s00128-003-0204-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- H C Wang
- Division of Chest Medicine, Department of Medicine, Veterans General Hospital-Kaoshiung, Kaoshiung, Taiwan, Republic of China
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47
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Song XT, Feng ZQ, Qiu ZN, Li YQ, Yu XC, Xiong Y, Yin CC, Huang HL, Guan XH. [Cloning and sequence analysis of the light chain variable region gene of monoclonal anti-idiotypic antibody NP30 of Schistosoma japonicum]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 18:257-9. [PMID: 12567627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To amplify and sequence the light chain of anti-idiotypic monoclonal antibody NP30 of Schistosoma japonicum. METHODS By comparing the conserved regions at each end of the nucleotide sequences of murine germ-line genes encoding FR1 and FR4 regions of immunoglobulin light chain variable regions, we designed a set of primers for amplification of VL gene. The hybridoma cells secreting anti-idiotypic monoclonal antibody NP30 of Schistosoma japonicum were cultured and their genome DNAs were extracted and used as templates for PCR. The PCR product was then cloned into pUC19 vector. The recombinants were sequenced by Sanger's method. The VL gene was compared with GenBank and published mouse VL genes. RESULTS The full-length of VL gene was 318 bp. The VL gene was a member of mouse Ig kappa light chain subgroup IV and generated from rearrangement of germ line V and J kappa 4 genes. The VL gene sequence has been registered by GenBank(accession No. AF206720). CONCLUSION The obtained VL gene was a potentially functional gene of anti-idiotypic monoclonal antibody NP30 of Schistosoma japonicum.
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Affiliation(s)
- X T Song
- Institute for Molecular Biology of Medicine, Nanjing Medical University, Nanjing 210029
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48
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Song LP, Cheng JL, Wang XB, Zhang Z, Fang M, Zhou ZY, Huang HL. A new model of trispecific antibody resulting the cytotoxicity directed against tumor cells. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2003; 35:503-10. [PMID: 12796809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Bispecific antibodies (BsAb) with specificity to both tumor cells and CD3 molecule were believed to be promising immunological tools for the therapy with minimal residual diseases by activating cytotoxic T cells. However, without costimulatory molecule CD28, the activated T cells tended to apoptosis. In order to kill tumor cells more efficiently, a recombinant multifunctional single-chain trispecific antibody (scTsAb), which contains anti-ovarian carcinoma (OC) scFv, anti-CD3 scFv and VH domain of anti-CD28 antibody, was constructed and expressed in E. coli BL21 Star strain. The scTsAb showed strong binding avidities to membrane antigen of SK-OV-3 cell, CD3 molecule on Jurkat cell, and recombinant CD28 antigen. It was further demonstrated that this scTsAb could activate peripheral blood T cells to elicit strong cytotoxicity against SK-OV-3 cells. This new type of recombinant scFv antibody set up a new technological platform for T cells based immunotherapy against cancer, especially with the failure on MHC antigen presentation or absence of costimulating signal.
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Affiliation(s)
- Li-Ping Song
- Institute of Genetics and Developmental Biology, the Chinese Academy of Sciences, Beijing 100101, China
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49
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Song LP, Huang HL. [Protein splicing and its application]. Sheng Wu Gong Cheng Xue Bao 2003; 19:249-54. [PMID: 15966332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Protein splicing is a newly discovered posttranslational editing process that removes an internal protein fragment from the protein precursor. During the splicing process the internal protein fragment, intein, triggered the self-excision from the precursor protein and the concomitant ligation of the flanking protein fragments, exteins. The self-catalysis requires neither auxiliary enzymes nor cofactors and only involves four intramolecular reactions. A number of key catalytic residues in inteins and flanking fragments have been identified, which led to the development of the protein splicing process as a protein engineering tool. Controllable cleavage of the peptide bond at either the N or the C terminus of an intein has allowed the design of novel strategies for manipulation of protein and peptides. Affinity purification of recombinant proteins can be facilitated by fusion the target protein with an intein. The fusion also creates C-terminal thioester, which expands the scope of chemical ligation in protein. Inteins can be engineered in a "split and inverted" configuration to form a cyclic polypeptide consisting of the sequence linking two intein subdomains. This article summarizes the recent advance in the mechanism of protein splicing and its applications in protein purification, protein ligation and protein cyclization.
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Affiliation(s)
- Li-Ping Song
- Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing 100101, China
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50
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Zhang Z, Li ZH, Wang F, Fang M, Yin CC, Zhou ZY, Lin Q, Huang HL. Overexpression of DsbC and DsbG markedly improves soluble and functional expression of single-chain Fv antibodies in Escherichia coli. Protein Expr Purif 2002; 26:218-28. [PMID: 12406675 DOI: 10.1016/s1046-5928(02)00502-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Single-chain Fv antibodies (scFv), a group of reconstructed molecules with several disulfide bonds, are prone to aggregate as inclusion bodies, the insoluble species of natural proteins, when expressed in Escherichia coli, especially at high level. Recovery of functionally active products from inclusion bodies is onerous and ineffective. We have increased the soluble and functional scFv yields by fusing either DsbC or DsbG, two E. coli disulfide isomerases with general chaperone function, to scFvs. Compared to the totally insoluble inclusion bodies of scFvs expressed separately, more than half of each fusion protein DsbC-scFv or DsbG-scFv was soluble, according to SDS-PAGE analysis. The more effective solubility was obtained when the fused protein DsbG-scFv was co-expressed simultaneously with DsbC under the same promoter. Under this condition, the soluble portion of DsbG-scFv increased from about 50% to 90% measured by scanning SDS-PAGE gel. Co-expression of DsbC can change fusion protein CBD-scFv from totally insoluble when expressed in E. coli separately to a considerable portion of soluble CBD-scFv. Antigen-binding activity assay showed that scFvs retained full affinity to specific antigens. We also determined that general molecular chaperones GroEL and GroES had no effects on the solubility of scFvs when co-expressed with scFv in E. coli. We propose that the correct formation of disulfide bonds in scFvs is the crucial factor responsible for solubility of scFvs.
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Affiliation(s)
- Zhong Zhang
- Group 102, Institute of Genetics and Developmental Biology, Academia Sinica, Beijing 100101, China
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