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Chen XM, Jia CL, Zhu ZY. Paeonol impacts ovarian cancer cell proliferation, migration, invasion and apoptosis via modulating the transforming growth factor beta/smad3 signaling pathway. J Physiol Pharmacol 2023; 74. [PMID: 38345445 DOI: 10.26402/jpp.2023.6.06] [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] [Received: 02/11/2023] [Accepted: 12/31/2023] [Indexed: 02/15/2024]
Abstract
Paeonol (2-hydroxy-4-methoxyphenylacetophenone) is a natural phenolic component isolated from the root bark of peony with multiple pharmacological activities and has been proven to have anti-cancer effects. The objective of this study is to investigate the influence mechanism of paeonol on the proliferatory and apoptotic activities of ovarian cancer (OC) cells by modulating the transforming growth factor beta (TGF-β)/Smad3 pathway. The SKOV3 cells were pretreated with various concentrations of paeonol (0, 25, 50, 100, 200, 400 μg/mL) for 48 hours to determine the optimal experimental concentration of paeonol. Following this, the TGF-β overexpression vector was constructed and transfected into the SKOV3 cells. The assessment of cell proliferation, invasion, and migration was conducted through MTT, colony formation, flow cytometry, transwell, and wound-healing experiments. The detection of TGF-β/Smad3 pathway-related proteins and apoptosis-related proteins (B-cell lymphoma (Bcl-2) Bcl-2-associated X protein (Bax)) was performed using Western blot analysis. Paeonol exhibited a significant inhibitory effect on SKOV3 cell viability when administered at concentrations ranging from 50-400 μg/mL, with an IC50 value of 200 μg/mL. Within the concentration range of 50 to 200 μg/mL, paeonol exhibited a dose-dependent effect on the progression of SKOV3 cells, including a reduction in the anti-apoptotic protein Bcl-2, an increase in the pro-apoptotic protein Bax (P<0.05), inhibition of cell migration and invasion (P<0.05), and promotion of cell apoptosis (P<0.05), particularly at a concentration of 200 μg/mL. These effects were found to be more pronounced. The aforementioned effects of paeonol can be ascribed to its inhibition of the TGFβ/Smad3 pathway, according to a mechanistic viewpoint. It is noteworthy that the inhibitory impact of paeonol on SKOV3 cell progression is counteracted by the elevation of TGF-β levels following overexpression. We conclude that paeonol exerts regulatory effects on the TGF-β/Smad3 pathway, leading to the inhibition of proliferation, migration, and invasion of OC cells, thereby attenuating malignant behavior of cancer cells.
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Affiliation(s)
- X M Chen
- Department of Gynecology, WuHan Third Hospital (Tongren Hospital of WuHan University), Wuhan City, Hubei Province, China.
| | - C L Jia
- Department of Obstetrics and Gynecology, XiangYang First People's Hospitai Affiliated to Hubei Medicine, Xiangyang City, Hubei Province, China
| | - Z Y Zhu
- Department of Gynecology, WuHan Third Hospital (Tongren Hospital of WuHan University), Wuhan City, Hubei Province, China.
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Zhang HP, Zhang HL, Zhou XM, Chen GJ, Zhou QF, Tang J, Zhu ZY, Wang W. Predictive value of frailty assessment tools in patients undergoing surgery for gastrointestinal cancer: An observational cohort study. World J Gastrointest Surg 2023; 15:2525-2536. [PMID: 38111763 PMCID: PMC10725547 DOI: 10.4240/wjgs.v15.i11.2525] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/09/2023] [Accepted: 09/26/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND Few studies have simultaneously compared the predictive value of various frailty assessment tools for outcome measures in patients undergoing gastrointestinal cancer surgery. Therefore, it is difficult to determine which assessment tool is most relevant to the prognosis of this population. AIM To investigate the predictive value of three frailty assessment tools for patient prognosis in patients undergoing gastrointestinal cancer surgery. METHODS This single-centre, observational, prospective cohort study was conducted at the Affiliated Lianyungang Hospital of Xuzhou Medical University from August 2021 to July 2022. A total of 229 patients aged ≥ 18 years who underwent surgery for gastrointestinal cancer were included in this study. We collected baseline data on the participants and administered three scales to assess frailty: The comprehensive geriatric assessment (CGA), Fried phenotype and FRAIL scale. The outcome measures were the postoperative severe complications and increased hospital costs. RESULTS The prevalence of frailty when assessed with the CGA was 65.9%, 47.6% when assessed with the Fried phenotype, and 34.9% when assessed with the FRAIL scale. Using the CGA as a reference, kappa coefficients were 0.398 for the Fried phenotype and 0.291 for the FRAIL scale (both P < 0.001). Postoperative severe complications and increased hospital costs were observed in 29 (12.7%) and 57 (24.9%) patients, respectively. Multivariate logistic analysis confirmed that the CGA was independently associated with increased hospital costs (odds ratio = 2.298, 95% confidence interval: 1.044-5.057; P = 0.039). None of the frailty assessment tools were associated with postoperative severe complications. CONCLUSION The CGA was an independent predictor of increased hospital costs in patients undergoing surgery for gastrointestinal cancer.
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Affiliation(s)
- Hui-Pin Zhang
- Department of Gastrointestinal Surgery, The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang 222061, Jiangsu Province, China
- Department of Gastrointestinal Surgery, The First People’s Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Hai-Lin Zhang
- Department of Nursing, The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang 222061, Jiangsu Province, China
| | - Xiao-Min Zhou
- Department of Nursing, The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang 222061, Jiangsu Province, China
| | - Guan-Jie Chen
- Department of Invasive Technology, Zhongda Hospital Southeast University, Nanjing 210003, Jiangsu Province, China
| | - Qi-Fan Zhou
- Department of Hemopurification Center, Lianyungang Clinical College of Nanjing Medical University, Lianyungang 222061, Jiangsu Province, China
| | - Jie Tang
- Department of Hemopurification Center, Lianyungang Clinical College of Nanjing Medical University, Lianyungang 222061, Jiangsu Province, China
| | - Zi-Ye Zhu
- Department of Nursing, The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang 222061, Jiangsu Province, China
| | - Wei Wang
- Department of Gastrointestinal Surgery, The First People’s Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
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Zhu ZY, Li XG, Wang RX, Tang RW, Zhao L, Yin GX, Wang ZC, Zhuo L. [Analysis of the performance of a multi-view fusion and active contour constraint based deep learning algorithm for ossicles segmentation on 10 μm otology CT]. Zhonghua Yi Xue Za Zhi 2021; 101:3897-3903. [PMID: 34905891 DOI: 10.3760/cma.j.cn112137-20210816-01840] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the performance of a deep learning algorithm that combined multi-view fusion with active contour constrained for ossicles segmentation on the 10 μm otology CT images. Methods: The 10 μm otology CT image data from 79 cases (56 cases were from volunteers and 23 cases were from specimens) were retrospectively collected in the Radiology Department of Beijing Friendship Hospital from October 2019 to December 2020. An annotation of malleus, incus, and stapes were conducted. Then the datasets were established and were divided into training set (n=55), validation set (n=8), and test set (n=16). Using the rapid localization of the region of interest combined with the precise segmentation algorithm, the malleus, incus and stapes were segmented and fused from three perspectives of coronal, sagittal and cross-sectional views. Besides, an active contour loss was designed simultaneously for the segmentation of stapes. Dice similarity coefficient (DSC) was used as the objective evaluation metric for the evaluation of the segmentation results. The inter group DSC of the proposed method was compared with that of the basic method and other methods. Results: The average DSC values of the multi-view fusion segmentation algorithm for malleus, incus and stapes reached up to 94.2%±2.7%, 94.6%±2.6% and 76.0%±5.5%, respectively. After adopting the constraint of active contour loss method, the average DSC of stapes was improved (76.4%±5.4% vs 76.0%±5.5%). The visualization results also demonstrated that the segmentation results of the stapes were more complete. Conclusions: Multi-view fusion algorithm based on 10 μm otology CT images can realize accurate segmentation of malleus and incus. Combined with the constraint of active contour loss method, the segmentation accuracy of stapes can be further improved.
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Affiliation(s)
- Z Y Zhu
- Department of information, Beijing University of Technology, Beijing 100124, China
| | - X G Li
- Department of information, Beijing University of Technology, Beijing 100124, China
| | - R X Wang
- Department of information, Beijing University of Technology, Beijing 100124, China
| | - R W Tang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - L Zhao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - G X Yin
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Z C Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - L Zhuo
- Department of information, Beijing University of Technology, Beijing 100124, China
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Yang Q, Sun LX, Gao WT, Zhu ZY, Gao X, Zhang QG, Zhu AM, Liu QL. Crown ether-based anion exchange membranes with highly efficient dual ion conducting pathways. J Colloid Interface Sci 2021; 604:492-499. [PMID: 34274712 DOI: 10.1016/j.jcis.2021.07.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 05/12/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 11/30/2022]
Abstract
Anion exchange membranes (AEMs) are a crucial constituent for alkaline fuel cells. As the core component of fuel cells, the low performance AEMs restrict the development and application of the fuel cells. Herein, the trade-off between the OH- conductivity and dimensional stability was solved by constructing AEMs with adequate OH- conductivity and satisfactory alkali resistance using Tröger's base (TB) poly (crown ether)s (PCEs) as the main chain, the embedded quaternary ammonium (QA) and Na+-functionalized crown ether units as the cationic group. Crown ether is an electron donator, and can capture Na+ to form Na+-functionalized crown ether units to conveniently transfer OH- and significantly promote the alkaline stability of the AEMs. The influence of the Na+-functionalized crown ether units on the performance of AEMs was studied in detail. The PCEs based AEMs show an obvious hydrophobic-hydrophilic microphase separation. These features make them ideal platforms for the OH- conduction applications. As expected, the as-prepared PCEs-QA-100% (100% is the degree of cross-linking) AEM with an ionic exchange capacity (IEC) of 2.07 meq g-1 has a high OH- conductivity of 159 mS cm-1 at 80 °C. Furthermore, the membrane electrode assemblies fabricated using the PCEs-QA-100% AEM possess a maximum power density of 291 mW cm-2 under the current density of 500 mA cm-2.
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Affiliation(s)
- Q Yang
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - L X Sun
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - W T Gao
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Z Y Zhu
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - X Gao
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Q G Zhang
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - A M Zhu
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Q L Liu
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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Zhu ZY, Liu YL, Gou GQ, Gao W, Chen J. Effect of heat input on interfacial characterization of the butter joint of hot-rolling CP-Ti/Q235 bimetallic sheets by Laser + CMT. Sci Rep 2021; 11:10020. [PMID: 33976259 PMCID: PMC8113572 DOI: 10.1038/s41598-021-89343-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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] [Received: 12/11/2020] [Accepted: 04/19/2021] [Indexed: 11/10/2022] Open
Abstract
Composite structures made of 2 mm-thick titanium and 10 mm-thick carbon steel are widely used in infrastructures such as long-distance gas transportation. However, cracking, which is caused by intermetallic compounds (ICs), is a dominate failure mode in welds of this structure. Thus, a common way to improve the in-service life of is reduce the number of ICs. In this paper, we employ a novel hybrid welding method to fabricate composite structures of TA2 titanium and Q235 carbon steel. Specifically, Ti and carbon steel is welded by laser and double Cold Metal Transfer (CMT) welding, respectively. The microstructure near the interface of Ti and steel is then examined using SEM, EBSD, EDS, with emphasis on the ICs in terms of chemical elements and morphologies. Results show that FeTi and Fe2Ti are the main ICs near the interface, and responsible for the failure of the welds. The effect of welding heat input on the formation of ICs is investigated as well. Results show that ICs are smaller when the heat input is low. Under low heat input circumstance, the tensile strength of the weld can reach up to 420 MPa.
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Affiliation(s)
- Z Y Zhu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, 610031, China
| | - Y L Liu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, 610031, China
| | - G Q Gou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, 610031, China.
| | - W Gao
- Department of Chemical and Materials Engineering, the University of Auckland, PB 92019, Auckland, 1142, New Zealand
| | - J Chen
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, 610031, China.,Chengdu Industrial and Trade College, Chengdu, 611756, China
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Meng Y, Zhu ZY, Zhu JY, Yang PY, Wang XJ. [Characteristics of clinical effectiveness of bloodletting and proposed ways of mechanism research]. Zhen Ci Yan Jiu 2020; 45:835-8. [PMID: 33788451 DOI: 10.13702/j.1000-0607.190927] [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: 11/12/2022]
Abstract
According to the operative characteristics, the stimulated site and the curative effect-emerged site of bloodletting therapy, its clinical characteristics may be divided into three categories: a) local stimulation induced focus-local effect, b) local stimulation induced effect of the distal target organ (point-to-point distal effect), and c) special point stimulation induced broader effect of the whole body. Accordingly, the underlying mechanisms of clinical outcomes mainly involve the improvement of the local microcirculation and secondary changes of inflammatory substances for the first category (local focus). The point-to-point distal effect might mainly involve the innervation of nerve segments, while the broad effect of specific acupoint stimulation might involve multiple levels of the neuro-endocrine-immune system. The future research on the mechanisms of bloodletting should starts from its specific effects and the type of disease, which should not be generalized.
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Affiliation(s)
- Ying Meng
- The First Clinical Medical School, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zi-Ye Zhu
- College of Acupuncture-moxibustion and Tuina, Nanjing University of Chinese Medicine, Nanjing 210023, China; School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jie-Yu Zhu
- College of Acupuncture-moxibustion and Tuina, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Pei-Yu Yang
- College of Acupuncture-moxibustion and Tuina, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Xin-Jun Wang
- College of Acupuncture-moxibustion and Tuina, Nanjing University of Chinese Medicine, Nanjing 210023, China; School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing 210023, China
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Qin W, Hu BZ, Zhang Z, Chen S, Li FJ, Zhu ZY, Wang XJ, Liu M, Li CH. [Clinical characteristics and death risk factors of severe COVID-19]. Zhonghua Jie He He Hu Xi Za Zhi 2020; 43:648-653. [PMID: 32727175 DOI: 10.3760/cma.j.cn112147-20200320-00380] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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 analyze the clinical features and death-related risk factors of COVID-19. Methods: We enrolled 891 COVID-19 patients admitted to the Affiliated Hospital of Jianghan University from December 2019 to February 2020, including 427 men and 464 women. Of the 891 cases, 582 were severe or critical, including 423(73%)severe and 159 (27%) critical cases. We compared the demographics, laboratory findings, clinical characteristics, treatments and prognosis data of the 582 severe patients. Univariate and multivariate logistic regression analysis was conducted to explore the risk factors associated with death in COVID-19 patients. Results: The 582 severe patients included 293 males and 289 females, with a median age of 64(range 24 to 106). Sixty-three patients died, including 45 males and 18 females, with a median age of 71(range 37 to 90). The average onset time of the 582 patients was 8 days, of whom 461 (79%) had fever, 358 (62%) dry cough, 274 (47%) fatigue. There were 206 cases with shortness of breath (35%), 155 cases with expectoration (27%), 83 cases with muscle pain or joint pain (14%), 71 cases with diarrhea (12%), and 29 cases with headache (4%). Underlying diseases were present in 267 (46%) patients, most commonly hypertension (194, 33%), followed by diabetes (69, 12%), coronary atherosclerotic heart disease (37, 6%), tumor (18, 3%), and chronic obstructive pulmonary disease (5, 1%). Chest CT showed bilateral lung involvement in 505 patients (87%). Upon admission, the median lymphocyte count of the 582 patients was 0.8(IQR, 0.6-1.1)×10(9)/L, the median D-dimer was 0.5 (IQR, 0.4- 0.8) mg/L, the median N-terminal brain natriuretic peptide precursor (NT-proBNP) was 433 (IQR, 141- 806) pg/L, and the median creatinine was 70.3 (IQR, 56.9-87.9) μmol/L. The death group had a median lymphocyte count of 0.5 (0.4-0.8)×10(9)/L, D-dimer 1.1 (0.7-10.0)mg/L, N-terminal brain natriuretic peptide precursor 1479(893-5 087) pg/ml, and creatinine 89.9(67.1-125.3) μmol/L. Multivariate logistic analysis showed that increased D-dimer (OR: 1.095, 95% CI: 1.045-1.148, P<0.001), increased NT-proBNP (OR: 4.759, 95% CI: 2.437-9.291, P<0.001), and decreased lymphocyte count (OR: 0.180, 95% CI: 0.059-0.550, P=0.003) were the risk factors of death in COVID-19 patients. Conclusions: The average onset time of severe COVID-19 was 8 days, and the most common symptoms were fever, dry cough and fatigue. Comorbidities such as hypertension were common and mostly accompanied by impaired organ functions on admission. Higher D-dimer, higher NT-proBNP, and lower lymphocyte count were the independent risk factors of death in COVID-19 patients.
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Affiliation(s)
- W Qin
- Department of Pulmonary and Critical Care Medicine,Affiliated Hospital of Jianghan University, Wuhan 430015,China
| | - B Z Hu
- Institute of Pulmonary Vascular Diseases, Jianghan University, Wuhan 430015,China
| | - Z Zhang
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100020, China
| | - S Chen
- Institute of Pulmonary Vascular Diseases, Jianghan University, Wuhan 430015,China
| | - F J Li
- Institute of Pulmonary Vascular Diseases, Jianghan University, Wuhan 430015,China
| | - Z Y Zhu
- Institute of Pulmonary Vascular Diseases, Jianghan University, Wuhan 430015,China
| | - X J Wang
- Institute of Pulmonary Vascular Diseases, Jianghan University, Wuhan 430015,China
| | - M Liu
- General Department, Affiliated Hospital of Jianghan University, Wuhan 430015, China
| | - C H Li
- Institute of Pulmonary Vascular Diseases, Jianghan University, Wuhan 430015,China
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Niu WH, Li CL, Liu H, Shi WX, Zhang JJ, Zhu ZY. [Application of luminex liquid chip technology to observe changes in T cell secretion of umbilical cord mesenchymal stem cells]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:556-558. [PMID: 31357784 DOI: 10.3760/cma.j.issn.1007-3418.2019.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- W H Niu
- Tianjin Medical University Third Center Clinical College, Tianjin 300000, China
| | - C L Li
- Third Central Hospital of Tianjin, Tianjin Key Laboratory of Artificial Cell, Tianjin Institute of Hepatobiliary Disease, Artificial Cell Engineering Technology Research Center of Public Health Ministry, Tianjin 300000, China
| | - H Liu
- Third Central Hospital of Tianjin, Tianjin Key Laboratory of Artificial Cell, Tianjin Institute of Hepatobiliary Disease, Artificial Cell Engineering Technology Research Center of Public Health Ministry, Tianjin 300000, China
| | - W X Shi
- Third Central Hospital of Tianjin, Tianjin Key Laboratory of Artificial Cell, Tianjin Institute of Hepatobiliary Disease, Artificial Cell Engineering Technology Research Center of Public Health Ministry, Tianjin 300000, China
| | - J J Zhang
- Third Central Hospital of Tianjin Hepatobiliary Surgery, Tianjin 300000, China
| | - Z Y Zhu
- Tianjin Medical University Third Center Clinical College, Tianjin 300000, China
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Xia RW, Xun CZ, Xiang D, Zhang JM, Yang QX, Zhao FY, Wang C, Zhu ZY, Li Q, Ye LY. A novel double-variant RHAG allele leads to Rh mod phenotype. Transfus Med 2019; 29:460-465. [PMID: 31032541 DOI: 10.1111/tme.12598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 09/30/2018] [Revised: 01/30/2019] [Accepted: 04/02/2019] [Indexed: 12/28/2022]
Abstract
AIMS/OBJECTIVES We aimed to analyse the molecular backgrounds and red blood cell (RBC) antigen expression of a male blood donor with Rhmod phenotype and his family members. BACKGROUND Rh deficiency phenotypes are rarely found worldwide and are characterised by the lack of Rh antigen expression on RBCs. During routine screening, we found a blood donor who seemingly lacked Rh antigens. Therefore, we recruited the donor and his family for further investigation. METHODS RBC serotyping and antibody screening/identification were performed for each sample. A routine blood examination was also conducted. RHD, RHCE and RHAG were sequenced at the genomic DNA or RNA level. Eleven antigens or proteins associated with Rh complex were tested using flow cytometry analysis. RESULTS The proband and one of his brothers showed extremely weak D antigen and Rh expression levels but did not manifest anaemia. Most of the expressed RBC antigens of the two Rh-deficient individuals were similar to the previously reported cases but with some exceptions. Molecular analyses demonstrated homozygous expression of a novel RHAG allele, namely, c.[572G>A;707A>C], both in the proband and one of his brothers. CONCLUSIONS To our knowledge, we identified the second double-variant RHAG allele and the first one related to Rhmod phenotype. The novel allele was also confirmed to be heritable by family analyses.
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Affiliation(s)
- R W Xia
- Blood Group Reference Laboratory, Qujing Blood Center, Qujing, China
| | - C Z Xun
- Blood Group Reference Laboratory, Qujing Blood Center, Qujing, China
| | - D Xiang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - J M Zhang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Q X Yang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - F Y Zhao
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - C Wang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Z Y Zhu
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Q Li
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - L Y Ye
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
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Zhu ZY, Xue JX, Yu LX, Bian WH, Zhang YF, Sohn KC, Shin IH, Yao C. Reducing postsurgical exudate in breast cancer patients by using San Huang decoction to ameliorate inflammatory status: a prospective clinical trial. ACTA ACUST UNITED AC 2018; 25:e507-e515. [PMID: 30607117 DOI: 10.3747/co.25.4108] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Reducing inflammatory factors in wound exudate is a promising treatment approach for healing wounds in postsurgical breast cancer patients. Traditional Chinese Medicine (tcm) treatments have been shown to be beneficial and safe for optimal regulation of oxidative stress during the postoperative period. In the present clinical trial, we evaluated the effectiveness of a promising Chinese herbal formula, San Huang decoction [shd (Radix astragali, Radix et rhizoma rhei, and Rhizoma curcuma longa, 3:1:1; supplemental Table 1)], on wound inflammatory response after mastectomy. Methods The study randomized 30 patients with breast cancer who fulfilled the inclusion and exclusion criteria to either a treatment (n = 15) or a control group (n = 15). Patients in the treatment group received liquid shd, taken twice daily with or without food. Treatment was given for 1 day before surgery and for 7 days postoperatively. Participants in the control group received a placebo on the same schedule as the treatment group. Outcomes measured in every subject included clinical tcm and wound inflammation symptom scores, daily and total amounts of drainage fluid, and levels of inflammatory factors in the exudate [tumour necrosis factor α (tnf-α), interleukins 6 (il-6), 8 (il-8), and 2R (il-2R), human C-reactive protein (crp)] at 2 hours and on days 1, 3, and 7 postoperatively. Results The total amount of drainage fluid over 7 days was significantly lower in the treatment group (572.20 ± 93.95 mL) than in the control group (700.40 ± 107.38 mL). The tcm symptom score was also lower in treatment group (day 7: 1.87 ± 0.83 vs. 4.80 ± 3.61, p = 0.049), as was the inflammatory symptom score (day 7: 0.67 ± 0.72 vs. 3.67 ± 2.50, p = 0.001). Levels of tnf-α, il-6, il-8, il-2R, and crp in drainage fluid were significantly lower with shd treatment. Conclusions Perioperative treatment with shd effectively lessened postoperative exudate and ameliorated inflammatory symptoms in patients who underwent surgery for breast cancer.
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Affiliation(s)
- Z Y Zhu
- Department of Breast Disease, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, P.R.C
| | - J X Xue
- Department of Breast Disease, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, P.R.C
| | - L X Yu
- Department of Breast Disease, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, P.R.C
| | - W H Bian
- Department of Breast Disease, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, P.R.C
| | - Y F Zhang
- Department of Breast Disease, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, P.R.C
| | - K C Sohn
- Hospital of Catholic University of Daegu, Daegu, Republic of Korea
| | - I H Shin
- Hospital of Catholic University of Daegu, Daegu, Republic of Korea
| | - C Yao
- Department of Breast Disease, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, P.R.C
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11
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Xiong YY, Zhang SM, Hua WL, Zhu ZY. [Digital duplication of mock-up in the restorations of severe dental fluorosis cases]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:777-779. [PMID: 30419660 DOI: 10.3760/cma.j.issn.1002-0098.2018.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Y Xiong
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology & National Clinical Research Center of Stomatology, Shanghai 200011, China
| | - S M Zhang
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology & National Clinical Research Center of Stomatology, Shanghai 200011, China
| | - W L Hua
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology & National Clinical Research Center of Stomatology, Shanghai 200011, China
| | - Z Y Zhu
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology & National Clinical Research Center of Stomatology, Shanghai 200011, China
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12
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Wang Y, Guo R, Gong XC, Zhu ZY, Liu HY, Qi JH, Hao XJ. [Double-site ectopic thyroid: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 53:699-700. [PMID: 30293267 DOI: 10.3760/cma.j.issn.1673-0860.2018.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Y Wang
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
| | - R Guo
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
| | - X C Gong
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
| | - Z Y Zhu
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
| | - H Y Liu
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
| | - J H Qi
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
| | - X J Hao
- Department of Otorhinolaryngology, Airforce Hospital, Beijing 100142, China
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13
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Li K, Zhu ZY, Sun YY, Huang C, Wang YK. [Combined application of alveolar ridge preservation and digital implant guide technique to solve the esthetic problem of anterior teeth: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:561-563. [PMID: 30078272 DOI: 10.3760/cma.j.issn.1002-0098.2018.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- K Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Z Y Zhu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Y Y Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - C Huang
- Department of Prosthodontics, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Y K Wang
- Department of Prosthodontics, School of Stomatology, Wuhan University, Wuhan 430079, China
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14
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Niu WH, Zhang JJ, Zhu ZY. [Research advances in the role of mesenchymal stem cells and their exosomes in treatment of liver diseases]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:793-796. [PMID: 29108215 DOI: 10.3760/cma.j.issn.1007-3418.2017.10.018] [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
At present, liver transplantation remains the most effective treatment for acute liver failure and advanced cirrhosis, but its use and promotion are limited by insufficient organ donors, financial consideration, and requirements for lifelong immunosuppression. In recent years, stem cell transplantation has been recommended as an effective substitutive therapy for liver disease. Mesenchymal stem cells, also known as pluripotent interstitial stromal cells, are self-renewing cells that can be found in almost all postnatal organs and tissues, including the liver. Their potential to differentiate into hepatocytes and immunomodulatory properties provide new insights into the use of mesenchymal stem cells in the treatment of acute and chronic liver diseases. This article reviews the characteristics of mesenchymal stem cells, their mechanisms in the treatment of acute and chronic liver diseases, and related risks.
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Affiliation(s)
- W H Niu
- Tianjin Medical University Three Center Clinical College, Tianjin Key Laboratory of Artificial Cell, Tianjin Institute of Hepatobiliary Disease, Artificial Cell Engineering Technology Research Center of Public Health Ministry, Tianjin 300000, China
| | - J J Zhang
- Tianjin Third Central Hospital Hepatobiliary Surgery, Tianjin 300000, China
| | - Z Y Zhu
- Tianjin Medical University Three Center Clinical College, Tianjin Key Laboratory of Artificial Cell, Tianjin Institute of Hepatobiliary Disease, Artificial Cell Engineering Technology Research Center of Public Health Ministry, Tianjin 300000, China
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15
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He LB, Wang H, Luo LF, Jiang SH, Liu LY, Li YM, Huang R, Liao LJ, Zhu ZY, Wang YP. Characterization, expression analysis and localization pattern of toll-like receptor 1 (tlr1) and toll-like receptor 2 (tlr2) genes in grass carp Ctenopharyngodon idella. J Fish Biol 2016; 89:1434-1440. [PMID: 27221024 DOI: 10.1111/jfb.12997] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 01/06/2016] [Accepted: 04/06/2016] [Indexed: 06/05/2023]
Abstract
In this study, the toll-like receptor 1 (tlr1) and toll-like receptor 2 (tlr2) genes of grass carp Ctenopharyngodon idella were cloned and characterized. tlr1 and tlr2 were found to be highly expressed in immune system organs such as spleen, middle kidney and heart kidney. The expression level of tlr1 and tlr2 was found to be up-regulated at the later stage of viral challenge process. Moreover, subcellular localization indicated that Tlr1 and Tlr2 shared similar localization pattern and both of them may locate in the plasma membrane of transfected cells.
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Affiliation(s)
- L B He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - H Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - L F Luo
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - S H Jiang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- Department of Zoology, College of Life Sciences, Kim Il Song University, Pyongyang, Democratic People's Republic of Korea
| | - L Y Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Y M Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - R Huang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - L J Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Z Y Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Y P Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
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Zhao XF, Xu Y, Zhu ZY, Gao CY, Shi YN. Clinical observation of umbilical cord mesenchymal stem cell treatment of severe systolic heart failure. Genet Mol Res 2015; 14:3010-7. [PMID: 25966065 DOI: 10.4238/2015.april.10.11] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The aim of this study was to evaluate the effectiveness of umbilical cord mesenchymal stem cells (MSCs) in the treatment of chronic systolic heart failure. Fifty-nine hospitalized patients with heart failure were randomly divided into a treatment group (30 patients) and a control group (29 patients). The treatment group received treatment with medication as well as intracoronary transplantation of umbilical cord MSCs, and the control group, only medication. The cardiac structure, function change, and rehospitalization and mortality rates of the 2 groups were observed before and 1 and 6 months after treatment. One month after the transplantation of umbilical cord MSCs, the incidence of fatigue, chest tightness, and dyspnea was high in the treatment group. The 6-min walking distance of the treatment group was found to be significantly higher than that of the control group (P < 0.05); in addition, the NT-proBNP level, left ventricular ejection fraction, and mortality rate of the treatment group were statistically lower than those of the control group (P < 0.05). Readmission rates showed a downward trend, but the difference was not statistically significant (P > 0.05). Using umbilical cord MSCs in the treatment of congestive heart failure can help improve cardiac remodeling and cardiac function and reduce the mortality rate.
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Affiliation(s)
- X F Zhao
- Department of Internal Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - Y Xu
- Department of Internal Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - Z Y Zhu
- Department of Internal Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - C Y Gao
- Department of Internal Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - Y N Shi
- Department of Internal Medicine, Henan Provincial People's Hospital, Zhengzhou, China
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17
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Pei YY, Huang R, Li YM, Liao LJ, Zhu ZY, Wang YP. Characterizations of four toll-like receptor 4s in grass carp Ctenopharyngodon idellus and their response to grass carp reovirus infection and lipopolysaccharide stimulation. J Fish Biol 2015; 86:1098-1108. [PMID: 25683466 DOI: 10.1111/jfb.12617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 07/04/2014] [Accepted: 11/26/2014] [Indexed: 06/04/2023]
Abstract
In this study, the subcellular localization, tissue distribution and response to grass carp reovirus (GCRV) infection and lipopolysaccharide (LPS) stimulation of four grass carp Ctenopharyngodon idellus toll-like receptor 4 (tlr4) genes were investigated. All four genes were constitutively expressed in all tissues studied, but the subcellular localization and tissue exhibiting the highest expression differed for each protein. Following GCRV infection, all the four tlr4s were upregulated in all tissues examined, and stimulation of C. idellus kidney (CIK) cells with LPS resulted in downregulation of all four tlr4s. These results provide a foundation for further investigation of tlr4 genes in bony fishes.
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Affiliation(s)
- Y Y Pei
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; Graduated University of Chinese Academy of Sciences, Beijing, 100049, China
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18
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Zhu ZY, Liu Y, Wang HB, Xiao JZ, Qiu YF, Yan L, Chen D, Liu AG, Yang X. Expression and diagnostic value of proteins in Mycobacterium tuberculosis. Genet Mol Res 2014; 13:7780-90. [PMID: 25299092 DOI: 10.4238/2014.september.26.16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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 constructed a prokaryotic expression vector expressing the Mycobacterium tuberculosis protein TB16.3, as well as 3 other proteins, including TB15.3, CFP-10, and Rv2626C, which were purified and analyzed for their effectiveness as detection antibodies. The TB16.3 genes of M. tuberculosis H37Rv genomic DNA were amplified by polymerase chain reaction, inserted into the expression vector pET-30a, and expressed in Escherichia coli. An enzyme-linked immunosorbent assay was used to detect the 4 M. tuberculosis antibodies. Engineered E. coli bacteria expressing TB16.3 and the 3 other proteins were constructed and found mainly to be soluble. For recombinant TB16.3 proteins, serum samples of 118 tuberculosis (TB) patients and 96 healthy controls were analyzed. Sensitivity, specificity, and adjusted concordance rate for the TB16.3 antibody were 72.9, 86.5, and 79.6%, respectively. The positive rate of Rv2626C antibody in TB patients (44.1%) was significantly lower than that in normal controls (75.0%, χ(2) = 20.8, P < 0.01). TB15.3 and TB16.3 were used for simultaneous detection and showed sensitivity, specificity, and repeatability rates of 69.4, 96.9, and 83.7%. The antibody positive rate and specificity for patients with lung disease was 9.6 and 90.4%, respectively. TB15.3 and TB16.3 were mixed and detected simultaneously. Combined with the results for TB15.3, the sensitivity, specificity, and concordance rates were 82.2, 95.9, and 88.9%, respectively. The concordance rate was the highest value observed. Target genes were cloned into a host strain and expressed successfully. The TB16.3 recombinant protein may be used as a new serological antigen for tuberculosis diagnosis.
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Affiliation(s)
- Z Y Zhu
- Hainan Provincial Nongken General Hospital, Haikou, Hainan, China
| | - Y Liu
- College of Environment and Plant Protection of Hainan University, Haikou, Hainan, China
| | - H B Wang
- Hainan Provincial Nongken General Hospital, Haikou, Hainan, China
| | - J Z Xiao
- Hainan Provincial Nongken General Hospital, Haikou, Hainan, China
| | - Y F Qiu
- Nanjing Potomac Biotechnology Co. Ltd., Nanjing, Jiangsu, China
| | - L Yan
- Nanjing Potomac Biotechnology Co. Ltd., Nanjing, Jiangsu, China
| | - D Chen
- Nanjing Potomac Biotechnology Co. Ltd., Nanjing, Jiangsu, China
| | - A G Liu
- Nanjing Potomac Biotechnology Co. Ltd., Nanjing, Jiangsu, China
| | - X Yang
- Nanjing Potomac Biotechnology Co. Ltd., Nanjing, Jiangsu, China
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19
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Zhu ZY, Zhang D, Wang HB, Xiao JZ, Qiu YF, Yan L, Chen D, Liu AG, Yang X. Expression and serological diagnosis of Mycobacterium tuberculosis CFP-10 and Rv2626c proteins. Genet Mol Res 2014; 13:7398-406. [PMID: 25222238 DOI: 10.4238/2014.september.12.5] [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
We constructed a Mycobacterium tuberculosis vector expressing CFP-10 and Rv2626c to examine the expression of these proteins in Escherichia coli as well as their immunoreactivity. The CFP-10 and Rv2626c genes were amplified from tuberculosis H37Rv genomic DNA using polymerase chain reaction. They were ligated into the expression vector PET30a and expressed in E. coli. Histidine tag nickel column chromatography was used to purify the recombinant protein. An enzyme-linked immunosorbent assay (ELISA) was used for detection. In our E. coli-engineered bacteria containing a CFP10 and Rv2626c plasmid, the target protein was found mainly to be in the soluble form. We formed mixed antigens of the recombinant CFP10 and Rv2626c proteins. ELISA results showed that in 214 blood samples, the positive rate was 77.1%. The target gene was successfully expressed in the host strain. Mixed antigens of the recombinant CFP-10 and Rv2626c proteins can be used as a combination antigen in the serological diagnosis of tuberculosis.
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Affiliation(s)
- Z Y Zhu
- Hainan Provincial Nongken General Hospital, Haikou, Hainan, China
| | - D Zhang
- College of Environment and Plant Protection of Hainan University, Haikou, Hainan, China
| | - H B Wang
- Hainan Provincial Nongken General Hospital, Haikou, Hainan, China
| | - J Z Xiao
- Hainan Provincial Nongken General Hospital, Haikou, Hainan, China
| | - Y F Qiu
- Nanjing Potomac BioTechnology Co. Ltd., Nanjing, Jiangsu, China
| | - L Yan
- Nanjing Potomac BioTechnology Co. Ltd., Nanjing, Jiangsu, China
| | - D Chen
- Nanjing Potomac BioTechnology Co. Ltd., Nanjing, Jiangsu, China
| | - A G Liu
- Nanjing Potomac BioTechnology Co. Ltd., Nanjing, Jiangsu, China
| | - X Yang
- Nanjing Potomac BioTechnology Co. Ltd., Nanjing, Jiangsu, China
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An YH, Xing Y, Song J, Li PG, Wang SL, Liu AP, Zhu ZY, Tang WH. Optoelectronic properties of CdSe0.75S0.25 nanocrystals assembled into micro-electrodes. J Nanosci Nanotechnol 2013; 13:5640-5644. [PMID: 23882809 DOI: 10.1166/jnn.2013.7518] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
CdSe0.75S0.25 semiconductor nanocrystals were synthesized by chemical colloidal route. The crystal structure, morphology and optical properties of synthesized CdSe0.75S0.25 nanocrystals were characterized by XRD, TEM and UV-Vis absorption spectroscopy respectively. The crystal structure of CdSe0.75S0.25 is face-centered Cubic sphalerite phase. The average size is about 7 nm in diameter. A gold tip-to-tip structure electrode with the gap size -20 microm was fabricated using conventional optical lithography technique followed by film deposition and standard lift-off process. An optoelectronics device was fabricated based on CdSe0.75S0.25 by assembling nanocrystals into electrodes by using dielectrophoresis (DEP) process. The electrical transport properties and opto-electrical transport properties of the fabricated device were measured at temperature range from 5 K to 305 K. The results show that the resistance of CdSe0.75S0.25 NCs increases with the temperature decreases, indicating a typical semiconductor behavior. An obvious photoconductive behavior was observed, demonstrated potential application in nano-optoelectronics devices. After data analyzing, the conductivity shows the 0.5 exponent of Efros-Shklovskii variable-range-hopping (ES-VRH) model.
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Affiliation(s)
- Y H An
- Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
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Abstract
Non-classical human leukocyte antigen (HLA)-DM plays an important and unique role in the processing and presentation of exogenous antigens. Polymorphisms of certain genes and frequency of alleles in populations may indicate susceptibility to certain diseases. In this study, the analysis of HLA-DMA and HLA-DMB gene polymorphisms and haplotypes in the Chinese Han population was conducted to obtain population genetic data. HLA-DM typing has been performed previously by other groups by polymerase chain reaction (PCR)-restriction fragment length polymorphism and PCR-sequence-specific oligonucleotide probe techniques. In this study, we established a TaqMan PCR typing method as an alternative to these techniques to survey the frequency of DMA and DMB alleles in the population. Genotyping was conducted in 1000 unrelated individuals of Han nationality in South and North China using TaqMan PCR typing. Four different DMA alleles and six different DMB alleles were detected. All loci met the Hardy-Weinberg equilibrium principle that both allele and genotype frequencies in a population remain constant. We found that the DMA*01:01 (69.35%) and DMB*01:01 (52.5%) alleles were more frequent in Chinese Hans. Analysis of the haplotypes for two loci of DMA and DMB showed that a highly significant positive linkage disequilibrium (LD) presented for DMA*01:01-DMB*01:02, DMA*01:01-DMB*01:03, DMA*01:01-DMB*01:04, DMA*01:02-DMB*01:01, DMA*01:02-DMB*01:05, DMA*01:03-DMB*01:07, and DMA*01:04-DMB*01:01 haplotypes. Analysis of haplotypes for four loci associated with antigen processing (DMA-DMB-TAP1-TAP2) showed a highly significant LD in DMA*01:01-DMB*01:04-TAP1*02:01:01-TAP2*01:02, DMA*01: 02-DMB*01:05-TAP1*01:01-TAP2*01:01, and DMA*01:01-DMB*01:03-TAP1* 04:01-TAP2*01:01 haplotypes. The comparison between the Chinese Han population and non-Chinese populations showed that no significant differences were found at the HLA-DMA locus in the Chinese Han population compared with people of German nationality, whereas significant differences presented when compared with Turkish, American Caucasian, Japanese, French, and Italian nationalities. However, at the HLA-DMB locus, highly significant differences presented in the Chinese Han population compared with Germans and Italians. This study lays the foundations for further disease association analyses.
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Affiliation(s)
- M L Feng
- Shanghai Blood Center, Shanghai, China
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22
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Zhu ZY, Cheng YC, Schwingenschlögl U. The origin of the pseudogap in α-Ga. J Phys Condens Matter 2011; 23:475502. [PMID: 22075974 DOI: 10.1088/0953-8984/23/47/475502] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Density functional theory, the free-electron empty lattice approximation and the nearly free-electron approximation are employed to investigate the electronic properties of partially covalent α-Ga. Whereas free-electron-like properties are revealed over a large energy range, a deep pseudogap at the Fermi level is characteristic of α-Ga. We explain the origin of the pseudogap in terms of a delicate interplay between the electronic states and the specific Brillouin zone geometry.
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Affiliation(s)
- Z Y Zhu
- Physical Sciences and Engineering Division, KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia
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Wang CM, Lo LC, Zhu ZY, Pang HY, Liu HM, Tan J, Lim HS, Chou R, Orban L, Yue GH. Mapping QTL for an adaptive trait: the length of caudal fin in Lates calcarifer. Mar Biotechnol (NY) 2011; 13:74-82. [PMID: 20352272 DOI: 10.1007/s10126-010-9271-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Accepted: 12/17/2009] [Indexed: 05/29/2023]
Abstract
The caudal fin represents a fundamental design feature of fishes and plays an important role in locomotor dynamics in fishes. The shape of caudal is an important parameter in traditional systematics. However, little is known about genes involved in the development of different forms of caudal fins. This study was conducted to identify and map quantitative trait loci (QTL) affecting the length of caudal fin and the ratio between tail length and standard body length in Asian seabass (Lates calcarifer). One F1 family containing 380 offspring was generated by crossing two unrelated individuals. One hundred and seventeen microsatellites almost evenly distributed along the whole genome were genotyped. Length of caudal fin at 90 days post-hatch was measured. QTL analysis detected six significant (genome-wide significant) and two suggestive (linkage-group-wide significant) QTL on seven linkage groups. The six significant QTL explained 5.5-16.6% of the phenotypic variance, suggesting these traits were controlled by multiple genes. Comparative genomics analysis identified several potential candidate genes for the length of caudal fin. The QTL for the length of caudal fin detected for the first time in marine fish may provide a starting point for the future identification of genes involved in the development of different forms of caudal fins in fishes.
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Affiliation(s)
- C M Wang
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
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Zhu ZY, Mu YQ, Fu XM, Li SM, Zhao FX. Association of CYP1B1 gene polymorphisms and the positive expression of estrogen alpha and estrogen beta with endometrial cancer risk. EUR J GYNAECOL ONCOL 2011; 32:188-191. [PMID: 21614911] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
To investigate the relationship between the CYP1B1 L432V polymorphism, ERalpha and ERbeta positivities and the incidence of endometrial cancer. The relationship between CYP1B1 L432V polymorphism, ERalpha and ERbeta positivities and endometrial cancer was investigated using the allele-specific polymerase chain reaction method to analyze gene polymorphism in exon 3 codon 432 (C-G) of CYP1B1. Our results are as follows: in endometrial cancer cases the prevalence rates of CYP1B1 L432V genotypes C/C, C/G, and G/G were 47.2%, 36.1%, and 16.7%, respectively, and 68.8%, 23.8% and 7.5% in the control group, respectively. The frequencies of CYP1B1 C and G alleles were 65.3% and 34.7% in endometrial cancer patients and 80.6% and 19.4% in the control group. A significant difference was found in the genotype distributions or allele frequencies of CYP1B1 L432V polymorphism between the two groups (p < 0.05). Compared with wild-type C/C, the susceptibility of endometrial cancer with homozygotic mutation G/G and heterozygotic mutation C/G increased by 3.235 (95%CI 1.111-9.425) and 2.214 (95% CI 1.067-4.593). Moveover, the positive expression of ERalpha in genotypes G/G and C/G was higher than in the wild genotype C/C (p < 0.05). In conclusion, allelic polymorphism of CYP1B1 L432V increases the risk of endometrial cancer and has a positive correlation with ERalpha expression.
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Affiliation(s)
- Z Y Zhu
- Department of Obstetrics and Gynecology, Shanxi Datong University School of Medicine, Datong, China.
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Zhu ZY, Wang CM, Lo LC, Lin G, Feng F, Tan J, Chou R, Lim HS, Orban L, Yue GH. A standard panel of microsatellites for Asian seabass (Lates calcarifer). Anim Genet 2009; 41:208-12. [PMID: 19793264 DOI: 10.1111/j.1365-2052.2009.01973.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microsatellites are the most popular markers for parentage assignment and population genetic studies. To meet the demand for international comparability for genetic studies of Asian seabass, a standard panel of 28 microsatellites has been selected and characterized using the DNA of 24 individuals from Thailand, Malaysia, Indonesia and Australia. The average allele number of these markers was 10.82 +/- 0.71 (range: 6-19), and the expected heterozygosity averaged 0.76 +/- 0.02 (range: 0.63-1.00). All microsatellites showed Mendelian inheritance. In addition, eight standard size controls have been developed by cloning a set of microsatellite alleles into a pGEM-T vector to calibrate allele sizes determined by different laboratories, and are available upon request. Seven multiplex PCRs, each amplifying 3-5 markers, were optimized to accurately and rapidly genotype microsatellites. Parentage assignment using 10 microsatellites in two crosses (10 x 10 and 20 x 20) demonstrated a high power of these markers for revealing parent-sibling connections. This standard set of microsatellites will standardize genetic diversity studies of Asian seabass, and the multiplex PCR sets will facilitate parentage assignment.
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Affiliation(s)
- Z Y Zhu
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, Singapore
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Affiliation(s)
- Z Y Zhu
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
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Yue GH, Wang GL, Zhu BQ, Wang CM, Zhu ZY, Lo LC. Discovery of four natural clones in a crayfish species Procambarus clarkii. Int J Biol Sci 2008; 4:279-82. [PMID: 18781225 PMCID: PMC2532795 DOI: 10.7150/ijbs.4.279] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Accepted: 08/26/2008] [Indexed: 11/08/2022] Open
Abstract
Self-cloning is quite rare in shrimp, lobsters, crayfish and crabs. Here we report the discovery of four natural clones of red swamp crayfish (Procambarus clarkii), each containing 2-6 genetically identical individuals, during the genotyping of 120 individuals with five microsatellites. The four clones were heterozygote at most of the five microsatellite loci. Phylogenetic analysis using microsatellite genotypes suggests recent origin of the four clones. Sequencing a part of the mitochondrial gene Cox I confirmed that the four clones were from the species Procambarus clarkii.
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Affiliation(s)
- G H Yue
- Molecular population Genetics Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore.
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28
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Zhu ZY, Zhang HW, Xu SF, Chen JL, Wu GH, Zhang B, Zhang XX. Intrinsic anisotropy of degree of transport spin polarization in typical ferromagnets. J Phys Condens Matter 2008; 20:275245. [PMID: 21694406 DOI: 10.1088/0953-8984/20/27/275245] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A general approach is presented for investigation of the anisotropy of the degree of transport spin polarization (P) in ferromagnets both in the ballistic regime, P(1,i), and in the diffusive regime, P(2,i), as a function of crystal direction. The validity of this approach is confirmed by the benchmark calculation for the isotropic P. By this approach, we have investigated the anisotropy of P in bcc Fe, fcc Co, fcc Ni and hcp Co. For cubic structures, P(1,i) shows a small but appreciable anisotropy, due to the difference in the electronic orbital extension for spin-up and spin-down conduction bands. However, P(2,i) shows an isotropic feature for the cubic structure, as a result of the combination of its dependence on the square of electron velocity and the lattice symmetry. On the other hand, for hcp Co, both P(1,i) and P(2,i) show a very strong anisotropy. The large anisotropy of P(1,i) and P(2,i) in hcp Co is mainly attributed to the anisotropy of spin-down ballistic (diffusive) conductance.
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Affiliation(s)
- Z Y Zhu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
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Weng JQ, Xie RH, Yao PP, Li MH, Xu F, Lu YY, Zhu HP, Cui QR, Zhu ZY. [Molecular characterization of hantavirus Zhejiang isolate ZT10 strain from M. fartis]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2008; 22:2-5. [PMID: 18414685] [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: 05/26/2023]
Abstract
OBJECTIVE To learn about the complete genomic sequence of the Seoul virus strain ZT10 isolated from M. fartis. METHODS The total RNA was extracted from the infected Vero E6 cells and amplified by RT-PCR. The purified PCR products were cloned into T-vector and sequenced. RESULTS The results demonstrated that the complete genome of ZT10 was comprised of L(6530), M(3651) and S(1753) segments which encoded 2151-1133 and 429 amino acids respectively. CONCLUSION Analysis of sequence revealed that the ZT10 belonged to Seoul virus. The nucleotide sequence identity of the M gene with Seoul virus was 84.0%-96.3%. The identity with Hantan vrisu (Prospect Hill virus, Tula virus) isolated from M. fartis was 57.5%-60.9%. The sequence identity of the S gene with Seoul virus was 87.9%-96.0% at nucleotide level and 96.9%-97.9% at amino acid level.
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Affiliation(s)
- Jing-qing Weng
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou 310009, China.
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30
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Wang CM, Lo LC, Feng F, Zhu ZY, Yue GH. Identification and verification of QTL associated with growth traits in two genetic backgrounds of Barramundi (Lates calcarifer). Anim Genet 2007; 39:34-9. [PMID: 18076743 DOI: 10.1111/j.1365-2052.2007.01672.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Quantitative trait loci (QTL) affecting growth traits have previously been mapped in linkage groups (LG) 2, 3 and 23 of Barramundi (Lates carcalifer), but these QTL have not been verified in different genetic backgrounds and environments. Here, we report the identification and verification of QTL for growth traits on LG2, 3, 10 and 23 in F(1) families constructed using brooders from the Singapore Marine Aquaculture Center (MAC) and from wild stocks collected in Thailand (THAI). The previously detected QTL for body weight and length linked to marker Lca371 on LG2 were confirmed in both the MAC and THAI families, whereas other QTL previously mapped to LG3 and 23 were only detected in one of the two families. QTL for body weight and length were identified in the MAC family, but not in the THAI family, in a region where the insulin-like growth factor 2 (IGF2) and tyrosine hydroxylase 1 (TH1) genes are located on LG10. Significant epistatic interactions were identified between markers Lca287 on LG2 and IGF2 on LG10 for growth trait QTL in the MAC family, but not in the THAI family. Effects of the IGF2, TH1 and parvalbumin 1 candidate genes were family-specific. Our results indicate that some but not all QTL are family-specific in Barramundi.
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Affiliation(s)
- C M Wang
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
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31
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Pei DS, Sun YH, Chen SP, Wang YP, Hu W, Zhu ZY. Identification of differentially expressed genes from the cross-subfamily cloned embryos derived from zebrafish nuclei and rare minnow enucleated eggs. Theriogenology 2007; 68:1282-91. [PMID: 17919716 DOI: 10.1016/j.theriogenology.2007.08.027] [Citation(s) in RCA: 16] [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] [Received: 03/18/2007] [Revised: 08/26/2007] [Accepted: 08/01/2007] [Indexed: 11/19/2022]
Abstract
Cross-species nuclear transfer (NT) has been used to retain the genetic viability of a species near extinction. However, unlike intra-species NT, most embryos produced by cross-species NT were unable to develop to later stages due to incompatible nucleo-cytoplasmic interactions between the donor nuclei and the recipient cytoplasm from different species. To study the early nucleo-cytoplasmic interaction in cross-species NT, two laboratory fish species (zebrafish and rare minnow) from different subfamilies were used to generate cross-subfamily NT embryos in the present study. Suppression subtractive hybridization (SSH) was performed to screen out differentially expressed genes from the forward and reverse subtractive cDNA libraries. After dot blot and real-time PCR analysis, 80 of 500 randomly selective sequences were proven to be differentially expressed in the cloned embryos. Among them, 45 sequences shared high homology with 28 zebrafish known genes, and 35 sequences were corresponding to 22 novel expressed sequence tags (ESTs). Based on functional clustering and literature mining analysis, up- and down-regulated genes in the cross-subfamily cloned embryos were mostly relevant to transcription and translation initiation, cell cycle regulation, protein binding, etc. To our knowledge, this is the first report on the determination of genes involved in the early development of cross-species NT embryos of fish.
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Affiliation(s)
- D S Pei
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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32
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Zhu ZY, Cao YY, Wang Y, Quan H, Zhao JX, Jia XM, Cao YB, Gao PH, Xu Z, Jiang YY. Candida albicans THI13 disruption affects production of monocytic cytokines. Oral Microbiol Immunol 2007; 22:293-7. [PMID: 17803625 DOI: 10.1111/j.1399-302x.2007.00357.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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The Candida albicansTHI13 gene was identified by its homology to the Candida tropicalis CtNMT1 gene, which is involved in pyrimidine precursor biosynthesis. METHODS Disruption of THI13 revealed that this gene played a minor role in thiamin biosynthesis in C. albicans. Purified human monocytes were incubated with C. albicans at the optimal Candida: monocyte ratio of 0.5 and cytokines in the supernatants were measured by enzyme-linked immunosorbent assay. RESULTS AND DISCUSSION This experiment showed that the wild-type strain significantly induced interleukin-10 (IL-10) production but had little effect on IL-12 production, and that THI13 mutants had no significant effect on IL-10 production, though the IL-12 level was increased in the supernatants. These results suggest that THI13 is involved in the host effective immune response by regulating IL-10 and IL-12 production.
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Affiliation(s)
- Z Y Zhu
- School of Pharmacy, Second Military Medical University, Shanghai, China
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Zhu ZY, Wang CM, Lo LC, Feng F, Lin G, Yue GH. Isolation, characterization, and linkage analyses of 74 novel microsatellites in Barramundi (Lates calcarifer). Genome 2007; 49:969-76. [PMID: 17036072 DOI: 10.1139/g06-080] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [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: 11/22/2022]
Abstract
Barramundi (Lates calcarifer) is an important marine food fish species in Southeast Asia and Australia. Seventy-four novel microsatellites were isolated from a genomic DNA library enriched for CA repeats and were characterized in 24 unrelated individuals. Among the 74 microsatellites, 71 were polymorphic, with an average allele number of 7.0 +/- 3.6/locus. The average expected heterozygosity of these polymorphic markers was 0.66. Sixty-three of the 71 polymorphic microsatellites conformed to Hardy-Weinberg equilibrium. Linkage analyses were conducted in a reference family, leading to the assignment of 34 novel microsatellites and 16 published markers in 16 linkage groups. The novel microsatellites developed in this study will contribute significantly to the construction of a first-generation linkage map for mapping of quantitative trait loci in Barramundi, and supply a large choice of markers for studies on population genetics, stock management, and pedigree reconstruction.
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Affiliation(s)
- Z Y Zhu
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, National University of Singapore, Singapore
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Guo ZH, Xiang D, Zhu ZY, Liu X, Chen HP, Wang JL, Liu DZ, Zhao TM. Serologic and molecular characterization of the B(A) blood group in the Chinese population. Immunohematology 2007; 23:69-74. [PMID: 18004937] [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] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
B(A) phenotype individuals have normal B antigen and a small amount of A antigen on the RBCs with anti-A in the plasma. Some highly potent monoclonal anti-A reagents are capable of agglutinating B(A) RBCs, which therefore usually results in a discrepancy between RBC and plasma ABO grouping. To date, five B(A) alleles (ABO B(A)01, B(A)02, B(A)03, B(A)04, and B(A)05) have been defined by nucleotide sequences. To get a more complete picture of B(A) phenotypes found in the Chinese population and resolve blood donor typing problems caused by B(A) alleles,a serologic and molecular study of nine unrelated Chinese individuals and three families carrying B(A) alleles was conducted. Allele B(A)02 with a 700C>G mutation, allele B(A)04 with a single 640A>G substitution, and allele B(A)05 with a 641T>C mutation were detected in multigenerational families and unrelated blood donors. Neither the B(A)01 nor B(A)03 alleles with 703A>G substitutions were observed in this study. In addition, a polymerase chain reaction with a sequence-specific primer genotyping assay was developed for rapid identification of B(A)02, B(A)04, and B(A)05 alleles using genomic DNA samples.
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Affiliation(s)
- Z H Guo
- Blood Group Reference Lab, Shanghai Blood Center, 1191 Hong Qiao Road, Shanghai 200051
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35
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Xu YX, Zhu ZY, Lo LC, Wang CM, Lin G, Feng F, Yue GH. Characterization of two parvalbumin genes and their association with growth traits in Asian seabass (Lates calcarifer). Anim Genet 2006; 37:266-8. [PMID: 16734689 DOI: 10.1111/j.1365-2052.2006.01423.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [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: 10/25/2022]
Abstract
Parvalbumins are extremely abundant in fish muscle and play an important role in muscle relaxation. In this study, two parvalbumin genes (PVALB1 and PVALB2) were cloned from Asian seabass (Lates calcarifer). The cDNAs for PVALB1 and PVALB2 were 840 and 667 bp respectively. Both genes consisted of five exons and four introns, encoded 109 amino acids, and were of beta lineage. Using real-time polymerase chain reaction, expression of PVALB1 was detected in all 10 tissues tested, with expression in brain, kidney, muscle and small intestine being 15- to 322-fold higher than in the other tissues. Expression of PVALB2 was detected only in muscle, brain and intestine, and was up to 10-fold lower than PVALB1 expression. A (CT)(17) microsatellite in the 3'-untranslated region of PVALB1 and three single nucleotide polymorphisms (SNPs) in the third intron of PVALB2 were identified. The microsatellite in PVALB1 was significantly associated with body weight and body length at 90 days post-hatch (P < 0.01), whereas the SNPs in PVALVB2 were not associated with these traits.
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Affiliation(s)
- Y X Xu
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
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Wang S, Yu GJ, Gong JL, Li QT, Xu HJ, Zhu DZ, Zhu ZY. Large-area fabrication of periodic Fe nanorings with controllable aspect ratios in porous alumina templates. Nanotechnology 2006; 17:1594-1598. [PMID: 26558565 DOI: 10.1088/0957-4484/17/6/011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Highly uniform Fe nanoring arrays in porous anodic alumina templates are fabricated by physical vapour deposition and grazing ion milling techniques. The nanorings have aspect ratios ranging from 0.8 to 4, depending on the deposition conditions. The outer diameter of the individual nanorings, and the area density and distribution patterns are completely determined by the template used. Selected-area electron diffraction reveals that these nanorings have a polycrystalline microstructure. The nanoring fabrication method demonstrated here can be extended to other materials.
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Affiliation(s)
- S Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
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Farook JM, Wang Q, Moochhala SM, Zhu ZY, Lee L, Wong PTH. Distinct regions of periaqueductal gray (PAG) are involved in freezing behavior in hooded PVG rats on the cat-freezing test apparatus. Neurosci Lett 2004; 354:139-42. [PMID: 14698458 DOI: 10.1016/j.neulet.2003.10.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 11/26/2022]
Abstract
The periaqueductal gray (PAG) is considered to be an exit relay for defensive responses. Studies have shown that the ventrolateral periaqueductal gray (vlPAG) plays a role in the expression of freezing behavior whereas dorsolateral periaqueductal gray (dlPAG) is involved on both freezing and active forms of defensive behaviors. To further elucidate this theory, lesioned vlPAG and dlPAG rats were exposed to a cat in the cat-freezing test apparatus. Subsequently, a 7-day repeated exposure to a cat was done on the vlPAG and dlPAG lesioned rats. Results showed that the vlPAG lesioned rats demonstrated significant decrease in freezing behavior and corresponding increase in locomotor activity, while the dlPAG lesioned rats failed to show any significance. Subsequent repeated exposure of the vlPAG lesioned rats to a cat for 7 days showed a gradual decrease in freezing behavior with significance shown at days 5, 6 and 7 while the dlPAG lesioned rats failed to show any changes. These results suggest that vlPAG regulates freezing behavior in hooded PVG rats.
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Affiliation(s)
- J M Farook
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA.
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Zhang YA, Nie P, Luo HY, Wang YP, Sun YH, Zhu ZY. Characterization of cDNA encoding immunoglobulin light chain of the mandarin fish (Siniperca chuatsi). Vet Immunol Immunopathol 2003; 95:81-90. [PMID: 12969639 DOI: 10.1016/s0165-2427(03)00105-3] [Citation(s) in RCA: 18] [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: 11/16/2022]
Abstract
Immunoglobulin light chain cDNA sequences of a perciform fish, the mandarin fish Siniperca chuatsi were amplified from head kidney mRNA by reverse transcription (RT)-PCR and RACE methods using degenerated primer and gene specific ones. In cDNA sequences of the VL region, nucleotide exchanges were present mainly within CDRs, although a lesser degree of variability was also found in FRs. Moreover, the length of CDR1 and CDR3 in the mandarin fish is shorter than in most other fish species. In the middle of S. chuatsi CL region, a microsatellite sequence (AGC)(6-8) was found, which is also present in another perciform species, the spotted wolffish (Anarhichas minor). The comparison of amino acid sequence of the mandarin fish CL domain with those of other vertebrates showed the highest degree of similarity of 94.5% to the spotted wolffish, while the similarity with rainbow trout (Oncorhynchus mykiss) Ig L1 (62.7%) and channel catfish (Ictalurus punctatus) Ig LG (55.9%) isotypes is also higher. However, there is only 50% identity in the VL regions between the mandarin fish and the wolffish. The sequence similarity of the mandarin fish CL domain with those of higher vertebrate did not readily allow it to be classified as kappa or lambda isotype. The phylogenetic analyses also demonstrated that the CL genes of the mandarin fish and most other teleost fish cluster as a separate branch out of the mammal kappa and lambda branches.
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Affiliation(s)
- Y A Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Laboratory of Fish Diseases, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, PR China
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Zhang YA, Nie P, Wang YP, Zhu ZY. cDNA sequence encoding immunoglobulin M heavy chain of the mandarin fish Siniperca chuatsi. Fish Shellfish Immunol 2003; 14:477-480. [PMID: 12812226 DOI: 10.1006/fsim.2002.0451] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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)
- Y A Zhang
- State Key Laboratory of Freshwater Ecology and Giotechnology, and Laboratory of fish Diseases, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, P. R. China
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Li RC, Zhu ZY. The integration of four major determinants of antibiotic action: bactericidal activity, postantibiotic effect, susceptibility, and pharmacokinetics. J Chemother 2002; 14:579-83. [PMID: 12583549 DOI: 10.1179/joc.2002.14.6.579] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
A functional pharmacokinetic/pharmacodynamic (PK/PD) index that could simultaneously describe three controlling PD variables, i.e., bactericidal activity, postantibiotic effect (PAE), and susceptibility, in relation to pharmacokinetics, was designed using an in vitro kinetic model. Tobramycin was tested against one standard and five clinical strains of Pseudomonas aeruginosa. The organisms showed minimum inhibitory concentrations (MICs) ranging between 1 and >1000 microg/ml. The model allowed antibiotic concentrations to be reduced exponentially from initial concentrations at fixed multiples of MIC. Antibiotic removal was performed when the decreasing concentrations hit the MIC of individual strain to provide a wide range of AUC(>MIC) within an identical frame of AUC(>MIC)/MIC (AUIC) values. Viable counts were measured at antibiotic addition and before/after its removal for bactericidal activity and PAE assessments. A linear relationship was observed between PAE and bactericidal rate constants, though the pattern varied among different strains. Characterization of the exposure (AUC(>MIC))-effect relationships using the Emax model revealed that the less susceptible strains displayed lower Emax and higher EC50 for both antimicrobial effects. By employing the AUIC as a common frame of reference, regression analysis showed a significant linear correlation (p < 0.05) between the mean PAE and bactericidal rate data and, thereby simultaneously defining the four contributing factors of the PK/PD system. It appears that the AUIC, by conveying the pharmacokinetic and susceptibility information, could serve as a PK/PD index in bridging the interdependency of PAE and bactericidal activity. More importantly, the collective assessment of these four factors would allow more optimal evaluation of dosage regimens.
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Affiliation(s)
- R C Li
- Department of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong.
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Ruan Y, Liu W, Xu X, Weng SQ, Shao SK, Zhou WQ, Teng Z, Gu HX, Zhu ZY, Xu ZY. [Comparative study on antibody levels of vaccination group and control group after 4 years of immunized with type B inactivated vaccine against hemorrhagic fever with renal syndrome]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2001; 15:274-6. [PMID: 11986705] [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: 02/24/2023]
Abstract
OBJECTIVE To compare the antibody level of vaccine group and control group in a randomized, controlled trial of type B inactivated vaccine against hemorrhagic fever with renal syndrome(HFRS) in Jiande County of Zhejiang Province and to find out if there is enhancement of subclinical infection about type B inactivated vaccine against HFRS. METHODS The number of sera collected (July 1994-July 1998) in vaccine group immunized type B inactivated vaccine against HFRS and control group were 305 and 283 persons in Jiande County respectively, and indirect immunofluorescent antibody method(IFAT) was used for testing the titer of HFRS IgG in sera. The cut-off values were determined on IFA titer of the second sera in control group with positive and negative IFA before vaccine was given respectively, and the subclinical infection of positive and negative IFA of the first sera in vaccine group was evaluated. RESULTS When taking different cut-off values of subclinical infection, there were no statistical differences in HFRS IFA positive rates between vaccine group and control group of positive IFA in the first sera. In vaccine group and control group of negative IFA before vaccine given, also the IFA positive rates were not statistically different in these groups. There were no statistical differences of IFA GMT and IFA sero-negative rate between vaccine group and control group. CONCLUSIONS The investigation showed there was no statistical difference in antibody level between vaccine group and control group, so there could not be enhancement of subclinical infection of vaccine group receiving type B inactivated vaccine against HFRS.
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Affiliation(s)
- Y Ruan
- Center of EPI, Chinese Academy of Preventive Medicine, Beijing 100050, China
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Abstract
The complete nucleotide sequence of M6 gene of grass carp hemorrhage virus (GCHV) was determined. It is 2039 nucleotides in length and contains a single large open reading frame that could encode a protein of 648 amino acids with predicted molecular mass of 68.7 kDa. Amino acid sequence comparison revealed that the protein encoded by GCHV M6 is closely related to the protein mu1 of mammalian reovirus. The M6 gene, encoding the major outer-capsid protein, was expressed using the pET fusion protein vector in Escherichia coli and detected by Western blotting using chicken anti-GCHV immunoglobulin (IgY). The result indicates that the protein encoded by M6 may share a putative Asn-42-Pro-43 proteolytic cleavage site with mu1.
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Affiliation(s)
- T Qiu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan
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43
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Wang W, Wang YP, Zhu ZY. [Prokaryotic expression of recombinant grass carp growth hormone]. Yi Chuan Xue Bao 2001; 28:306-12. [PMID: 11329871] [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: 02/19/2023]
Abstract
The recombinant plasmid containing a synthetic grass carp growth hormone cDNA was transformed into Escherichia coli BL21 (DE3) and expressed efficiently, induced by 1 mmol/L IPTG. 12.5% SDS-PAGE showed the molecular weight of new added protein in Escherichia coli BL21 (DE3) is consistent with that of grass carp growth hormone. The recombinant protein was composed of approximately 40% of the total bacterial proteins. The target protein was purified with Ni-NTA affinity column. Western-blotting conformed that recombinant protein could specifically react with antibody against grass carp growth hormone. ELISA-receptor assay showed the bioactivity of recombinant protein is consistent with that of nature grass carp growth hormone.
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Affiliation(s)
- W Wang
- State Key Laboratory of Fresh Water Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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44
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Abstract
Hemorrhagic disease, caused by the grass carp reovirus (GCRV), is one of the major diseases of grass carp in China. Little is known about the structure and function of the gene segments of this reovirus. The S10 genome segment of GCRV was cloned and the complete nucleotide sequence is reported here. The S10 is 909 nucleotides long and contains a large open reading frame (ORF) encoding a protein of 276 amino acids with a deduced molecular weight of approximately 29.7 kDa. Comparisons of the deduced amino acid sequence of GCRV S10 with those of other reoviruses revealed no significant homologies. However, GCRV S10 shared a putative zinc-finger sequence and a similar distribution of hydrophilic motifs with the outer capsid proteins encoded by Coho salmon aquareovirus (SCSV) S10, striped bass reovirus (SBRV) S10, and mammalian reovirus (MRV) S4. It was predicted that this segment gene encodes an outer capsid protein.
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Affiliation(s)
- T Qiu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrology, Chinese Academy of Sciences, Wuhan
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45
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Li JS, Zhu ZY, Cai SQ. [A survey on botanical origins of drug Xue Lianhua produced in China]. Zhongguo Zhong Yao Za Zhi 2000; 25:461-5. [PMID: 12515206] [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 Based on an to investigation and identification of commercial samples to find out the original species and resources of Xue Lianhua. METHOD Botanical and macroscopical identification. RESULT The main original species of the plant are Saussurea involucrata, S. medusa, S. gossypiphora, S. polylada, S. laniceps, S. tridactyla, S. gnaphaloides, S. kingii, S. obvallata, S. tangutica, S. globosa, S. longifolia, Soroseris erysimoides, So. glomerata and So. umbrella. CONCLUSION The flower and stem of S. involucrata and S. polylada and the whole herb of S. medusa and S. gossypiphora are used as Xue Lianhua in most areas of China.
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Affiliation(s)
- J S Li
- Institute of Medicinal Plant, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China
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46
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Wu YS, Wang Y, Huang CH, Lan FH, Zhu ZY. A compound heterozygote in the NADH-cytochrome b5 reductase gene from a Chinese patient with hereditary methemoglobinemia type I. Int J Hematol 2000; 72:34-6. [PMID: 10979206] [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] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
To elucidate the mutation in the nicotinamide adenine dinucleotide-cytochrome b5 reductase (b5R) gene from a Chinese patient with hereditary methemoglobinemia type I, we analyzed the coding sequences of b5R cDNA from the patient and from normal subjects by direct sequencing the reverse transcriptase-polymerase chain reaction (RT-PCR) products. The PCR-amplified genomic DNA fragments of the b5R gene from the patient, his mother, and normal controls were analyzed by restriction enzymes MspI and RsaI. A compound heterozygote Arg57Gln (CGG-->CAG)/Cys203Tyr (TGC-->TAC) was found in the b5R gene from the patient, and a CGG-->CAG mutant allele occurred in a chromosome inherited from his mother, while TGC-->TAC occurred in a chromosome inherited from his father. In this report, we discuss a compound heterozygote first observed in the b5R gene from a patient with hereditary methemoglobinemia type I.
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Affiliation(s)
- Y S Wu
- Center for Medical Laboratory, Fuzhou General Hospital, People's Republic of China.
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47
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Wang Y, Wu YS, Zheng PZ, Yang WX, Fang GA, Tang YC, Xie F, Lan FH, Zhu ZY. A novel mutation in the NADH-cytochrome b5 reductase gene of a Chinese patient with recessive congenital methemoglobinemia. Blood 2000; 95:3250-5. [PMID: 10807796] [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] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
Recessive congenital methemoglobinemia due to nicotinamide adenine dinucleotide (NADH)-cytochrome b5 reductase (b5R) deficiency is classified into 2 clinical types: type 1 (erythrocyte type) and type 2 (generalized type). We found a Chinese family with type 1 recessive congenital methemoglobinemia, the patients from which were diagnosed according to clinical symptoms and b5R enzyme activity in the blood cells. To learn the molecular basis of type 1 recessive congenital methemoglobinemia in this Chinese family, we isolated total RNA from the peripheral leukocytes of the propositus and b5R complementary DNA (cDNA) by reverse transcription- polymerase chain reaction (RT-PCR). The coding region of the b5R cDNA was analyzed by sequencing the cloned PCR products. The results showed that the propositus was homozygous for a G-->A transition at codon 203 in exon 7, changing a cysteine to a tyrosine (Cys203Tyr). To characterize the mutant enzyme, both glutathione S-transferase (GST)-fused wild-type b5R and GST-fused mutant Cys203Tyr b5R were expressed in Escherichia coli and affinity purified. The results showed that the catalytic activity of the enzyme was not much affected by this amino acid substitution, but the mutant enzyme exhibited decreased heat stability and increased susceptibility to trypsin. These properties of the mutant enzyme would account for the restricted b5R deficiency and mild clinical manifestations of these type 1 patients. The finding of this novel mutation makes codon 203 the only position within the b5R gene at which more than 1 mutation has been found.
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Affiliation(s)
- Y Wang
- Research Laboratories, Center for Laboratory Medicine, Fuzhou General Hospital, Fuzhou City, Fujian Province, China.
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48
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Zhu ZY, Minenkova O, Bellintani F, De Tomassi A, Urbanelli L, Felici F, Monaci P. 'In vitro evolution' of ligands for HCV-specific serum antibodies. Biol Chem 2000; 381:245-54. [PMID: 10782995 DOI: 10.1515/bc.2000.031] [Citation(s) in RCA: 8] [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: 11/15/2022]
Abstract
We developed a strategy to improve the properties of ligands selected from phage-displayed random peptide libraries. A site-directed mutagenesis protocol that introduces mutations and extends the size of a target sequence has been set up to generate diversity in a single or in a population of clones. The pool of mutants thus created is screened to identify variants with the desired properties. We refer to this strategy as in vitro evolution' of ligands. Here we report the application of this in vitro evolution protocol to the identification of improved ligands for HCV-specific serum antibodies. A single clone or population of clones were processed to generate a secondary library. Screening of these libraries with sera from HCV-infected patients identified peptides with an enhanced and broadened ability to detect HCV-specific serum antibodies.
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Affiliation(s)
- Z Y Zhu
- Kenton Labs, Centro Ricerche Farmacologia, IRCCSS Lucia, Roma, Italy
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49
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Hu W, Yu DH, Wang YP, Wu KC, Zhu ZY. [Electroporation of sperm to introduce foreign DNA into the genome of Pinctada maxima (Jameson)]. Sheng Wu Gong Cheng Xue Bao 2000; 16:165-8. [PMID: 10976319] [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: 02/17/2023]
Abstract
Gene transfer was investigated in marine molluscs via electroporated sperm. Sperm of P. maxima (J.) was incubated with linear "all-fish" growth hormone gene (pCAgcGH and pCAgcGHc) for 30 min. Then, mature eggs were in-vitro fertilized with the sperm cells treated with electroporation at 10 kV and 2(7) pulses of six cycles. DNA was extracted from spat and analyzed by PCR and southern blot. The results indicated that the foreign DNA had been transferred into the genome of experimental molluscs. The transgenetic ration was 5.6%, 20% and 50% when 2 micrograms/mL, 6 micrograms/mL and 18 micrograms/mL of foreign DNA was used, respectively. It is suggested that the transferred efficiency is correlated with the amount of the foreign DNA.
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Affiliation(s)
- W Hu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan
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50
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Abstract
Fishes, the biggest and most diverse community in vertebrates are good experimental models for studies of cell and developmental biology by many favorable characteristics. Nuclear transplantation in fish has been thoroughly studied in China since 1960s. Fish nuclei of embryonic cells from different genera were transplanted into enucleated eggs generating nucleo-cytoplasmic hybrids of adults. Most importantly, nuclei of cultured goldfish kidney cells had been reprogrammed in enucleated eggs to support embryogenesis and ontogenesis of a fertile fish. This was the first case of cloned fish with somatic cells. Based on the technique of microinjection, recombinant MThGH gene has been transferred into fish eggs and the first batch of transgenic fish were produced in 1984. The behavior of foreign gene was characterized and the onset of the foreign gene replication occurred between the blastula to gastrula stages and random integration mainly occurred at later stages of embryogenesis. This eventually led to the transgenic mosaicism. The MThGH-transferred common carp enhanced growth rate by 2-4 times in the founder juveniles and doubled the body weight in the adults. The transgenic common carp were more efficient in utilizing dietary protein than the controls. An "all-fish" gene construct CAgcGH has been made by splicing the common carp beta-actin gene (CA) promoter onto the grass carp growth hormone gene (gcGH) coding sequence. The CAgcGH-transferred Yellow River Carp have also shown significantly fast-growth trait. Combination of techniques of fish cell culture, gene transformation with cultured cells and nuclear transplantation should be able to generate homogeneous strain of valuable transgenic fish to fulfil human requirement in 21st century.
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Affiliation(s)
- Z Y Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Luojiashan, Wuhan.
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