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Cheng C, Yu X, Shi K, Dai G, Pan Q, Yuan G, Jia J. Associations between abdominal obesity indices with hypertension in type 2 diabetes mellitus: Chinese visceral adiposity index. J Endocrinol Invest 2024; 47:547-555. [PMID: 37768525 DOI: 10.1007/s40618-023-02165-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/14/2023] [Indexed: 09/29/2023]
Abstract
PURPOSE This research was performed to evaluate the relationship between hypertension (HTN) and abdominal obesity index in patients with type 2 diabetes mellitus (T2DM). METHODS Totally 1657 participants with T2DM (mean age 54 ± 12 years; 38.02% female) were enrolled. They were divided into the groups of HTN (n = 775) and non-HTN (n = 882). Anthropometric and biochemical indicators were measured and collected. A bioelectrical impedance analyzer was used to measure visceral and subcutaneous fat areas. RESULTS Compared with the HTN group, the non-HTN group had a lower level of Chinese visceral adiposity index (CVAI) (p < 0.001). Meanwhile, among tertiles of CVAI, as CVAI increased, the proportion of patients with HTN increased, which was 33.51%, 44.30%, and 62.50%, respectively. CVAI was shown to have a significant positive correlation with HTN. (r = 0.258, p < 0.001). CVAI was independently related to an elevated risk of HTN by binary logistic regression analyses, and the OR was (95% CI) 1.013 (1.010-1.016, p < 0.001) after adjustment. The area under the receiver operating characteristic curve (AUC) of CVAI predicted HTN in T2DM patients was greater than those of other abdominal obesity indices (p < 0.001). CONCLUSION We found that CVAI was highly positively correlated with HTN in T2DM. Compared with other indices of abdominal obesity, such as WC, BMI, WHR, VAI, and LAP, the CVAI showed superior discriminative ability in T2DM complicated with HTN. Therefore, more attention should be paid to CVAI in T2DM.
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Affiliation(s)
- C Cheng
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - X Yu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - K Shi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - G Dai
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - Q Pan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - G Yuan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China.
| | - J Jia
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China.
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Dai G, Liu Y, Shen W, Zhu B, Chen L, Chen D, Tan C. Molecular evolution analysis of MYB5 in Brassicaceae with specific focus on seed coat color of Brassica napus. BMC Plant Biol 2024; 24:52. [PMID: 38229007 DOI: 10.1186/s12870-023-04718-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 12/31/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND MYB transcription factors are splay a vital role in plant biology, with previous research highlighting the significant impact of the R2R3-MYB-like transcription factor MYB5 on seed mucilage biosynthesis, trichome branching, and seed coat development. However, there is a dearth of studies investigating its role in the regulation of proanthocyanidin (PA) biosynthesis. RESULTS In this study, a total of 51 MYB5 homologous genes were identified across 31 species belonging to the Brassicaceae family, with particular emphasis on Brassica napus for subsequent investigation. Through phylogenetic analysis, these genes were categorized into four distinct subclasses. Protein sequence similarity and identity analysis demonstrated a high degree of conservation of MYB5 among species within the Brassicaceae family. Additionally, the examination of selection pressure revealed that MYB5 predominantly underwent purifying selection during its evolutionary history, as indicated by the Ka/Ks values of all MYB5 homologous gene pairs being less than one. Notably, we observed a higher rate of non-synonymous mutations in orthologous genes compared to paralogous genes, and the Ka/Ks value displayed a stronger correlation with Ka. In B. napus, an examination of expression patterns in five tissues revealed that MYB5 exhibited particularly high expression in the black seed coat. The findings from the WGCNA demonstrated a robust correlation between MYB5 and BAN(ANR) associated with PA biosynthesis in the black seed coat, providing further evidence of their close association and co-expression. Furthermore, the results obtained from of the analysis of protein interaction networks offer supplementary support for the proposition that MYB5 possesses the capability to interact with transcriptional regulatory proteins, specifically TT8 and TT2, alongside catalytic enzymes implicated in the synthesis of PAs, thereby making a contribution to the biosynthesis of PAs. These findings imply a plausible and significant correlation between the nuique expression pattern of MYB5 and the pigmentation of rapeseed coats. Nevertheless, additional research endeavors are imperative to authenticate and substantiate these findings. CONCLUSIONS This study offers valuable insights into the genetic evolution of Brassicaceae plants, thereby serving as a significant reference for the genetic enhancement of Brassicaceae seed coat color.
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Affiliation(s)
- Guoqiang Dai
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Yi Liu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Wenjie Shen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Bo Zhu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Lunlin Chen
- Nanchang Branch of National Center of Oilcrops Improvement, Jiangxi Province Key Laboratory of Oil Crops Biology, Crops Research Institute of Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China.
| | - Daozong Chen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China.
| | - Chen Tan
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China.
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Zhang Z, Su H, Dai G, Li X, Zeng L. Effects of variable-temperature heat reservoirs on performance of irreversible Carnot refrigerator with heat recovery. Sci Rep 2023; 13:23068. [PMID: 38155181 PMCID: PMC10754918 DOI: 10.1038/s41598-023-50011-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 12/14/2023] [Indexed: 12/30/2023] Open
Abstract
The outlet temperature of the heat recovery reservoir is an important parameter in the design of refrigeration with heat recovery systems. In this paper the second law of thermodynamics has been applied to an irreversible Carnot refrigerator with heat recovery (CRHR) coupled to variable-temperature heat reservoirs. The refrigerating rate, input power, refrigeration coefficient, heat recovery coefficient, comprehensive coefficient of performance and exergy efficiency are chosen as the objective functions. The design rule chosen for this study is that the heat transfer area should be constrained. The mathematical expressions for assessing performance parameters with respect to area ratio, were derived for this study. These expressions are transcendental equations. The numerical solution method was employed to calculate the approximate solutions of the optimum performance parameters in a numerical example. The results indicate that the increase in the outlet temperature of heat recovery reservoir could lead to a rise in the maximum value of refrigerating rate and minimum value of input power; also it will lead to the decline in the maximum value of refrigeration coefficient, heat recovery coefficient, comprehensive coefficient and the exergy efficiency. When the ratio of heat recovery heat exchanger area to the summation of high temperature heat exchanger area and the heat recovery heat exchanger area is 1.0, the performance coefficients would attain their limit values and all of the condensing heat could be recycled. Our findings are helpful to the design and optimization to inform preparation of standard relating to the development of refrigerator with heat recovery.
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Affiliation(s)
- Zhe Zhang
- Department of Building Engineering, Hunan Institute of Engineering, Xiangtan, 411101, China
| | - Huan Su
- Department of Building Engineering, Hunan Institute of Engineering, Xiangtan, 411101, China.
- Hunan Engineering Research Center of Energy Saving and Material Technology of Green and Low Carbon Building, Xiangtan, 411104, China.
| | - Guoqiang Dai
- Department of Building Engineering, Hunan Institute of Engineering, Xiangtan, 411101, China
| | - Xiaohua Li
- Department of Building Engineering, Hunan Institute of Engineering, Xiangtan, 411101, China
- Hunan Engineering Research Center of Energy Saving and Material Technology of Green and Low Carbon Building, Xiangtan, 411104, China
| | - Liping Zeng
- Department of Building Engineering, Hunan Institute of Engineering, Xiangtan, 411101, China
- Hunan Engineering Research Center of Energy Saving and Material Technology of Green and Low Carbon Building, Xiangtan, 411104, China
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4
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Tan C, Chen H, Dai G, Liu Y, Shen W, Wang C, Liu D, Liu S, Xu S, Zhu B, Chen D, Cui C. Identification and characterization of the gene BraANS.A03 associated with purple leaf color in pak choi (Brassica rapa L. ssp. chinensis). Planta 2023; 258:19. [PMID: 37314587 DOI: 10.1007/s00425-023-04171-7] [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] [Grants] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023]
Abstract
MAIN CONCLUSION BraANS.A3 was the key gene controlling purple leaf color in pak choi, and two short fragments of promoter region in green pak choi might be interfering its normal expression. Pak choi (B. rapa L. ssp. chinensis) is an influential and important vegetable with green, yellow, or purple leaves that is cultivated worldwide. The purple leaves are rich in anthocyanins, but the underlying genetics and evolution have yet to be extensively studied. Free-hand sections of the purple leaves indicated that anthocyanins mainly accumulate throughout the adaxial and abaxial epidermal leaf cells. Segregation analyses of an F2 population of a B. rapa ssp. chinensis L. purple leaf mutant ZBC indicated that the purple trait is controlled by an incompletely dominant nuclear gene. Bulked segregant analysis (BSA) showed that the key genes controlling the trait were between 24.25 and 38.10 Mb on chromosome A03 of B. rapa. From the annotated genes, only BraA03g050560.3C, homologous to Arabidopsis AtANS, was related to the anthocyanin synthesis pathway. Genome annotation results and transcriptional sequencing analyses revealed that the BraANS.A3 gene was involved in the purple leaf trait. qRT-PCR analyses showed that BraANS.A3 was highly upregulated in ZBC but hardly expressed in the leaves of an inbred homozygous line of B. campestris ssp. chinensis L. green leaf mutant WTC, indicating that BraANS.A3 played a key role catalyzing anthocyanin synthesis in ZBC. Full-length sequence alignment of BraANS.A3 in WTC and ZBC showed that it was highly conserved in the gene region, with significant variation in the promoter region. In particular, the insertion of two short fragments of the promoter region in WTC may interfere with its normal expression. The promoter regions of ANS in six Brassica species all had multiple cis-elements involved in responses to abscisic acid, light, and stress, suggesting that ANS may be involved in multiple metabolic pathways or biological processes. Protein-protein interactions predicted that BraANS.A3 interacts with virtually all catalytic proteins in the anthocyanin synthesis pathway and has a strong relationship with Transparent Testa 8 (TT8). These results suggest that BraANS.A3 promotes anthocyanin accumulation in purple pak choi and provide new insights into the functional analysis of anthocyanin-related genes in Chinese cabbage and transcriptional regulatory networks.
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Affiliation(s)
- Chen Tan
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Haidong Chen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Guoqiang Dai
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Yi Liu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Wenjie Shen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Chenchen Wang
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Duannv Liu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Sijia Liu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Shuqi Xu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Bo Zhu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Daozong Chen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China.
| | - Cheng Cui
- Environment-Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China.
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Chen D, Chen H, Dai G, Zhang H, Liu Y, Shen W, Zhu B, Cui C, Tan C. Genome-wide identification and expression analysis of the anthocyanin-related genes during seed coat development in six Brassica species. BMC Genomics 2023; 24:103. [PMID: 36894869 PMCID: PMC9999611 DOI: 10.1186/s12864-023-09170-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 02/07/2023] [Indexed: 03/11/2023] Open
Abstract
Yellow seed is one favorite trait for the breeding of Brassica oilseed crops, but the performance of seed coat color is very complicated due to the involvement of various pigments. The change of seed coat color of Brassica crops is related to the specific synthesis and accumulation of anthocyanin, and the expression level of structural genes in anthocyanin synthesis pathway is specifically regulated by transcription factors. Despite some previous reports on the regulations of seed coat color from linkage marker development, gene fine-mapping and multi-omics association analysis, the trait of Brassica crops is affected by the evolutionary events such as genome triploidization, the regulatory mechanism is still largely unknown. In this study, we identified genes related to anthocyanin synthesis in six Brassica crops in U-triangle at the genome-wide level and performed collinearity analysis. A total of 1119 anthocyanin-related genes were identified, the collinear relationship of anthocyanin-related genes on subgenomic chromosomes was the best in B. napus (AACC) and the worst in B. carinata (BBCC). The comparisons of gene expressions for anthocyanin metabolic pathways in seed coats during seed development revealed differences in its metabolism among these species. Interestingly, the R2R3-MYB transcription factors MYB5 and TT2 were differentially expressed at all eight stages of seed coat development, indicating that they might be the key genes that caused the variation of the seed coat color. The expression curve and trend analyses of the seed coat development period showed that the main reason for the unexpressed copies of MYB5 and TT2 was likely gene silencing caused by gene structural variation. These results were valuable for the genetic improvement of Brassica seed coat color, and also provided new insights into gene multicopy evolution in Brassica polyploids.
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Affiliation(s)
- Daozong Chen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Haidong Chen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Guoqiang Dai
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Haimei Zhang
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Yi Liu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Wenjie Shen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Bo Zhu
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China.
| | - Cheng Cui
- Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chendu, 610066, China.
| | - Chen Tan
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China.
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6
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Dai G, Huang X, Liu Q, Li Y, Zhang L, Han K, Yang J, Liu Y, Xue F, Zhao D. Identification of a linear epitope in the capsid protein of goose astrovirus with monoclonal antibody. Pol J Vet Sci 2022; 25:579-587. [PMID: 36649111 DOI: 10.24425/pjvs.2022.143541] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Goose astrovirus (GoAstV) is a novel avastrovirus that typically causes gosling gout and results in 2 to 20% mortality. GoAstV capsid protein is the sole structural protein, which is responsible for viral attachment, assembly, maturation as well as eliciting host antibodies. However, the epitopes within capsid protein have not been well studied. In this study, a monoclonal antibody, named 1D7, was generated against GoAstV capsid protein by hybridoma technology. Western blot results showed that this MAb could react with recombinant capsid protein expressed in E. coli. Also, it recognized the precursor of capsid protein, VP90 and VP70, in GoAstV-infected cells. Besides, excellent specificity of MAb 1D7 was further demonstrated in indirect immunofluorescence assay and immunohistochemical analysis. Epitope mapping results revealed that MAb 1D7 recognized the epitope 33QKVY 36 within Cap protein. Sequence alignment indicated that 33QKVY 36 is a conserved epitope among the isolates of goose astrovirus type 2 (GoAstV-2), suggesting the potential for its use in GoAstV-2 specific diagnostic assay. These findings may provide some insight into a function of the GoAstV capsid protein and further contribute to the development of diagnostic methods for GoAstV infection.
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Affiliation(s)
- G Dai
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Tongwei Road, Nanjing City, Jiangsu Province 210095, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - X Huang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - Q Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - Y Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - L Zhang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - K Han
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - J Yang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - Y Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China
| | - F Xue
- College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Tongwei Road, Nanjing City, Jiangsu Province 210095, PR China
| | - D Zhao
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Nanjing City, Jiangsu Province, 210014, PR China.,College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Tongwei Road, Nanjing City, Jiangsu Province 210095, PR China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing City, Jiangsu Province, 210014, PR China.,Institute of Life Sciences, Jiangsu University, No. 301 Xuefu Road, Zhenjiang, Jiangsu Province, 212013, PR China
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Zhou Y, Shao Z, Dai G, Li X, Xiang Y, Jiang S, Zhang Z, Ren Y, Zhu Z, Fan C, Zhang G. Pathogenic infection characteristics and risk factors for bovine respiratory disease complex based on the detection of lung pathogens in dead cattle in northeast China. J Dairy Sci 2022; 106:589-606. [DOI: 10.3168/jds.2022-21929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 08/12/2022] [Indexed: 11/07/2022]
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Dai G, Chen X, Jing Y, Wang J. Anti-Symmetric Electromagnetic Interactions' Response in Electron Circular Dichroism and Chiral Origin of Periodic, Complementary Twisted Angle in Twisted Bilayer Graphene. Molecules 2022; 27:molecules27196525. [PMID: 36235063 PMCID: PMC9572769 DOI: 10.3390/molecules27196525] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/29/2022]
Abstract
Many novel physical properties of twisted bilayer graphene have been discovered and studied successively, but the physical mechanism of the chiral modulation of BLG by a twisted angle lacks theoretical research. In this work, the density functional theory, the wavefunction analysis of the excited state, and the quantum theory of atoms in molecules are used to calculate and analyze the anti-symmetric chiral characteristics of zigzag-edge twisted bilayer graphene quantum dots based on periodic complementary twisted angles. The analysis of the partial density of states shows that Moiré superlattices can effectively adjust the contribution of the atomic basis function of the fragment to the transition dipole moment. The topological analysis of electron density indicates that the Moiré superlattices structure can enhance the localization of the system, increasing the electron density of the Moiré central ring, reducing the electron surge capacity in general and inducing the reversed helical properties of the top and underlying graphene, which can be used as the origin of the chiral discrimination; it also reveals the mole in the superlattice chiral physical mechanism. On this basis, we will also study the nonlinear optical properties of twisted bilayer graphene based on a twisted angle.
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Affiliation(s)
- Guoqiang Dai
- College of Science, Liaoning Petrochemical University, Fushun 113001, China
| | - Xiangtao Chen
- School of Physics, Northeast Normal University, Changchun 130024, China
| | - Ying Jing
- College of Science, Liaoning Petrochemical University, Fushun 113001, China
- Correspondence: (Y.J.); (J.W.)
| | - Jingang Wang
- College of Science, Liaoning Petrochemical University, Fushun 113001, China
- Correspondence: (Y.J.); (J.W.)
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Zhou Y, Ren Y, Dai G, Li X, Xiang Y, Zhang J, Jiang Y, Jiang S, Hou X, Zhu Z, Wu R. Genetic characterization and clinical characteristics of bovine viral diarrhea viruses in cattle herds of Heilongjiang province, China. Iran J Vet Res 2022; 23:69-73. [PMID: 35782353 PMCID: PMC9238938 DOI: 10.22099/ijvr.2021.38650.5625] [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] [Received: 10/03/2020] [Revised: 11/24/2021] [Accepted: 12/12/2021] [Indexed: 06/15/2023]
Abstract
BACKGROUND Heilongjiang province is the main cattle-producing area in China, and molecular epidemiological studies of bovine viral diarrhea viruses (BVDV) in cattle have not been performed in the province. AIMS The objective of this research was to determine the genetic and clinical characteristics of BVDV in cattle. METHODS Fifty-three BVDV-positive clinical samples were collected from 22 cattle farms in Heilongjiang, and the 5´-untranslated region (5´-UTR) was used to carry out a phylogenetic analysis of the viruses. RESULTS The similarity of the 5´-UTR sequences among these BVDVs was 84.2%-100%, and the phylogenetic analysis showed that all viruses belong to the BVDV-1 species, which is classified into five subtypes: BVDV-1b (47.17%, n=25), 1c (15.09%, n=8), 1d (16.98%, n=9), 1 m (3.77%, n=2), and 1o (16.98%, n=9). The statistical results showed that the BVDV-1b subtype had a positive correlation with gastrointestinal disease (P<0.05; 95% CI: 1.19 to 3.34). There were up to three or four BVDV-1 subtypes in some dairy cattle farms, but farms with a single subtype were prevalent (5/10). CONCLUSION BVDV-1b is predominant in cattle herds of Heilongjiang province, China, and shows a positive correlation with gastrointestinal disease. BVDV-1o was found for the first time in Chinese cattle, which increased the complex distribution of BVDV-1 subtypes in cattle herds of China.
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Affiliation(s)
- Y. Zhou
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
- These authors contributed equally in this study
| | - Y. Ren
- Dapartment of Pharmacy, College of Daqing, Harbin Medical University, Daqing 163319, China
- These authors contributed equally in this study
| | - G. Dai
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - X. Li
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Y. Xiang
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - J. Zhang
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Y. Jiang
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - S. Jiang
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - X. Hou
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Z. Zhu
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - R. Wu
- Department of Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
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Jia F, Ren Z, Xu J, Shao G, Dai G, Liu B, Xu A, Yang Y, Wang Y, Zhou H, Chen M. 991P Sintilimab plus IBI305 as first-line treatment for advanced hepatocellular carcinoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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11
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Liu W, Yuan W, Li X, Zhuang J, Mo X, Dai G, Wang Y, Chen J, Wan Y, Li Y, Zhu X, Chen Y, Luo S, Jiang Z, Shi Y, Chen F, Cao L, Ye X, Fan X, Zhu P, Zhang K, Wu X. ZNF424 Induces Apoptosis and Inhibits Proliferation in Lung Carcinoma Cells. Curr Mol Med 2019; 18:109-115. [PMID: 29974829 PMCID: PMC6225340 DOI: 10.2174/1566524018666180705113642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/29/2018] [Accepted: 07/04/2018] [Indexed: 11/22/2022]
Abstract
Background: Previously, we showed that the Zinc finger-containing transcription factor ZNF424 inhibits p21 transcription, which has been widely associated with various cancers. However, because the roles of ZNF424 in tumorigenesis have not been characterized, we correlated ZNF424 expression with tumorigenesis in lung cancer. Results: The present immunohistochemical analyses show significantly lower ZNF424 expression levels in 43 of 60 lung cancer tissues compared with adjacent tissues. Moreover, flow cytometry assays indicated that overexpression of ZNF424 induces apoptosis in A549 human lung carcinoma cells, and overexpression of ZNF424 significantly increases numbers of G1 phase cells and decreases numbers of S phase cells, suggesting that ZNF424 inhibits proliferation. Western Blot analyses show that overexpression of ZNF424 decreases protein expression levels of the mitogen-activated protein kinase (MAPK) signaling proteins P-P38 and P-ERK in A549 cells. Conclusion: These are the first data to associate ZNF424 with tumorigenesis and demonstrate an inhibitory role in lung cancer, indicating the potential of ZNF424 expression as a diagnostic marker of lung tumorigenesis.
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Affiliation(s)
- W Liu
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - W Yuan
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Li
- The Second Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xianga School of Medicine, Central South University, Changsha, Hunan 410013, China
| | - J Zhuang
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510100, China
| | - X Mo
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - G Dai
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Y Wang
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - J Chen
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510100, China
| | - Y Wan
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Y Li
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Zhu
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510100, China
| | - Y Chen
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - S Luo
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Z Jiang
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Y Shi
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - F Chen
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - L Cao
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Ye
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Fan
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - P Zhu
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510100, China
| | - K Zhang
- The National Clinical Research Center for Geriatrics, Xiangya Hospital of Central South University, Changsha, Hunan 410008, China
| | - X Wu
- The Center for Heart Development, State Key Laboratory of Development Biology of Freshwater Fish, Key Laboratory of MOE for Development Biology and Protein Chemistry, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
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Chen F, Yuan W, Mo X, Zhuang J, Wang Y, Chen J, Jiang Z, Zhu X, Zeng Q, Wan Y, Li F, Shi Y, Cao L, Fan X, Luo S, Ye X, Chen Y, Dai G, Gao J, Wang X, Xie H, Zhu P, Li Y, Wu X. Role of Zebrafish fhl1A in Satellite Cell and Skeletal Muscle Development. Curr Mol Med 2019. [PMID: 29521230 PMCID: PMC6040174 DOI: 10.2174/1566524018666180308113909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: Four-and-a-half LIM domains protein 1 (FHL1) mutations are associated with human myopathies. However, the function of this protein in skeletal development remains unclear. Methods: Whole-mount in situ hybridization and embryo immunostaining were performed. Results: Zebrafish Fhl1A is the homologue of human FHL1. We showed that fhl1A knockdown causes defective skeletal muscle development, while injection with fhl1A mRNA largely recovered the muscle development in these fhl1A morphants. We also demonstrated that fhl1A knockdown decreases the number of satellite cells. This decrease in satellite cells and the emergence of skeletal muscle abnormalities were associated with alterations in the gene expression of myoD, pax7, mef2ca and skMLCK. We also demonstrated that fhl1A expression and retinoic acid (RA) signalling caused similar skeletal muscle development phenotypes. Moreover, when treated with exogenous RA, endogenous fhl1A expression in skeletal muscles was robust. When treated with DEAB, an RA signalling inhibitor which inhibits the activity of retinaldehyde dehydrogenase, fhl1A was downregulated. Conclusion: fhl1A functions as an activator in regulating the number of satellite cells and in skeletal muscle development. The role of fhl1A in skeletal myogenesis is regulated by RA signaling.
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Affiliation(s)
- F Chen
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - W Yuan
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Mo
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - J Zhuang
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510100, China
| | - Y Wang
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - J Chen
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510100, China
| | - Z Jiang
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Zhu
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510100, China
| | - Q Zeng
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Y Wan
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - F Li
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Y Shi
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - L Cao
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Fan
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - S Luo
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Ye
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Y Chen
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - G Dai
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - J Gao
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Wang
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - H Xie
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China.,Animal Nutrition and Human Health Laboratory, School of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - P Zhu
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510100, China
| | - Y Li
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - X Wu
- The Center for Heart Development, State Key Lab of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
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Liu Q, Feng L, Qu B, Ma L, Jia B, Dai G, Du X, Liu H, Gao Y, Wang Y, Chen J. Efficacy of Preoperative Neoadjuvant Simultaneous Integrated Boost IMRT Radiation Therapy Combined with Preoperative Chemotherapy for Locally Advanced Rectal Cancer: A Prospective II Clinical Study. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Yan W, Wu K, Yang Y, Guo M, Dai G. Retinoic acid-induced 2 (RAI2) is a potential tumor suppressor and RAI2 promoter methylation is a poor prognostic marker in colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Dumont CM, Piselli J, Temple S, Dai G, Thompson DM. Endothelial Cells Exposed to Fluid Shear Stress Support Diffusion Based Maturation of Adult Neural Progenitor Cells. Cell Mol Bioeng 2017; 11:117-130. [PMID: 31719881 DOI: 10.1007/s12195-017-0516-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 04/04/2017] [Accepted: 11/18/2017] [Indexed: 12/21/2022] Open
Abstract
Introduction The neural stem cell (NSC) niche is a highly complex cellular and biochemical milieu supporting proliferating NSCs and neural progenitor cells (NPCs) with close apposition to the vasculature, primarily comprised of endothelial cells (ECs). Current in vitro models of the niche incorporate EC-derived factors, but do not reflect the physiologically relevant hemodynamic state of the ECs or the spatial resolution observed between cells within the niche. Methods In this work, we developed a novel in vitro model of the niche that (1) incorporates ECs cultured with fluid shear stress and (2) fosters paracrine cytokine gradients between ECs and NSCs in a spatiotemporal configuration mimicking the cytoarchitecture of the subventricular niche. A modified cone and plate viscometer was used to generate a shear stress of 10 dynes cm-2 for ECs cultured on a membrane, while statically cultured NPCs are 10 or 1000 μm below the ECs. Results NPCs cultured within 10 μm of dynamic ECs exhibit increased PSA-NCAM+ and OLIG2+ cells compared to progenitors in all other culture regimes and the hemodynamic EC phenotype results in distinct progeny phenotypes. This co-culture regime yields greater release of pro-neurogenic factors, suggesting a potential mechanism for the observed progenitor maturation. Conclusions Based on these results, models incorporating ECs exposed to shear stress allow for paracrine signaling gradients and regulate NPC lineage progression with appropriate niche spatial resolution occurring at 10 μm. This model could be used to evaluate cellular or pharmacological interactions within the healthy, diseased, or aged brain.
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Affiliation(s)
- C M Dumont
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180 USA.,Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 USA
| | - J Piselli
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180 USA.,Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 USA
| | - S Temple
- Neural Stem Cell Institute, Rensselaer, NY 12144 USA
| | - G Dai
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180 USA.,Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 USA
| | - D M Thompson
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180 USA.,Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 USA
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wang Z, Dai G, Zhou Y, Hui H, Zhang P, Gou M. Apatinib combined with docetaxel in second-line treatment of advanced gastric cancer: A prospective randomized controlled clinical study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Xu C, Zhou Y, Qi R, Dai G, Tan X, He H. Synthesis and herbicidal activity of optically active α-(substituted phenoxyacetoxy) (substituted phenyl) methylphosphonates. Pestic Biochem Physiol 2017; 143:298-305. [PMID: 29183605 DOI: 10.1016/j.pestbp.2016.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/29/2016] [Accepted: 11/21/2016] [Indexed: 06/07/2023]
Abstract
α-(Substituted phenoxyacetoxy) alkylphosphonates containing one chiral carbon atom have been demonstrated to be PDHc inhibitor with good herbicidal activity and some of them could be used as potential herbicide. In order to determine any difference in herbicidal activities between (R) and (S) isomers, the synthetic method of optically active substituted phenylalkylphosphonates IB were explored. A highly practical, enantioselective hydrophosphonylation was developed to prepare optically active O,O-dimethyl α-hydroxyalkylphosphonates 3 as key intermediate by asymmetric addition reaction of dimethylphosphite 1 and several kinds of aldehydes 2 using tridentate Schiff base Al(III) complexes as catalysts. A series of novel O,O-dimethyl α-(substituted phenoxyacetoxy)(substituted phenyl)methylphosphonates IB including (R) and (S) enantiomers were further synthesized with excellent enantioselectivity (95-99% ee) by the condensation of optically active α-hydroxyl (substituted phenyl)methylphosphonates 3 and substituted phenoxyacetyl chlorides 4. The herbicidal activities of title compound IB including their racemates, (R) and (S) enantiomers were evaluated in greenhouse for post-emergence application. All compounds IB showed significant inhibitory activity against dicotyledonous plants. A difference in herbicidal effect among racemate, (R) and (S) enantiomers were observed. Especially IB7 and IB10 showed obvious chiral selectivity in inhibitory activity against chickweed. (S)-IB7 with ED50 of 22.8gai/ha was found to be most effective enantiomer against chickweed and its inhibitory activity was 8.17 times higher than (R)-IB7. (S)-IB7 as potential herbicide would be effective at lower rates than (R)-IB7 or (rac)-IB7.
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Affiliation(s)
- Chao Xu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, PR China
| | - Yuan Zhou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, PR China
| | - Ruilin Qi
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, PR China
| | - Guoqiang Dai
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, PR China
| | - Xiaosong Tan
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, PR China.
| | - Hongwu He
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, PR China.
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Catarino C, Baltazar T, Dai G, Maria-Engler S, Karande P. 542 Evaluation of native and non-native bio-inks for 3D printing of human tissues. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chen H, He Y, Wu D, Dai G, Zhao C, Huang W, Jiang D. Bone marrow sFRP5 level is negatively associated with bone formation markers. Osteoporos Int 2017; 28:1305-1311. [PMID: 27986984 DOI: 10.1007/s00198-016-3873-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/06/2016] [Indexed: 03/28/2023]
Abstract
UNLABELLED Secreted frizzled-related protein 5 (sFRP5) level in bone marrow environment is inversely correlated with bone formation markers, suggesting that it decreases bone mass by inhibiting bone formation. Besides, it functions in a local fashion when regulating bone metabolism. sFRP5 may be a target when developing anti-osteoporotic agents. INTRODUCTION The purpose of the study is to investigate the relationship between bone marrow sFRP5 level and bone turnover state. METHODS Eighty-three total knee arthroplasty patients were enrolled in this study. Data were collected prospectively and reviewed retrospectively. Lumbar spine and femoral neck bone mineral density (BMD), marrow adipose tissue (MAT) sFRP5 messenger RNA (mRNA) expression level, sFRP5 concentrations in marrow fluid and serum, concentrations of bone formation and resorption markers were measured for each participant. RESULTS Marrow fluid sFRP5 concentration was positively correlated with both MAT sFRP5 expression (p = 0.040) and serum sFRP5 concentration (p = 0.043). Significantly positive correlation existed between MAT sFRP5 expression level and BMD (p < 0.05). Marrow fluid sFRP5 concentration had a moderate but not significant positive association with BMD. MAT sFRP5 was negatively related to serum bone formation markers including N-terminal propeptide of type 1 procollagen (P1NP) (p = 0.011), osteocalcin (OC), and alkaline phosphatase (ALP). Marrow fluid and serum sFRP5 concentrations also had mild negative correlations with bone formation markers but reached no significance. There was no significant correlation between bone resorption marker β-crosslaps (β-CTX) and sFRP5. The mRNA expression level of MAT sFRP5 was positively related with those of MAT leptin, peroxisome proliferator-activated receptor-γ (PPARγ), and adiponectin, and its correlation with leptin was statistically significant (p = 0.026). CONCLUSIONS Bone marrow sFRP5 level is closely correlated with BMD and bone formation markers. sFRP5 may be a potential negative regulator of bone mass by inhibiting bone formation. It may exert its effects on bone metabolism in a paracrine, rather than endocrine manner.
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Affiliation(s)
- H Chen
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China.
| | - Y He
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - D Wu
- Department of Rehabilitation, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - G Dai
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - C Zhao
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - W Huang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - D Jiang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
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Lv Y, Dai G. 188P The efficacy of neoadjuvant chemotherapy in patients with advanced colon cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstract
Purpose: We determined whether reperfusion damage was sufficient to allow extravasation of a large molecular weight contrast agent into infarcted pig myocardium. Material and Methods: Five pig hearts were subjected to in situ occlusion of the left anterior descending coronary artery (2 h) followed by reperfusion (1 h). The hearts were excised and perfused in the Langendorff mode for ex vivo MR imaging. Polylysine-Gd-DTPA (50,000 Da) and Gd-DTPA (500-700 Da) were injected into the aorta (alternately) and followed by measurements of T1 relaxation and mean transit time (MTT). Results: In the normal myocardium, MTT of Gd-DTPA (56.8±23.2 s) was significantly ( p=0.02) longer than that of polylysine-Gd-DTPA (29.0±7 s). However, both normal and infarcted myocardium showed similar MTT (29.0±7.0 vs. 28.0±5.0 s, p>0.05) when using polylysine-Gd-DTPA. Conclusion: The results indicate that the permeability of capillaries to polylysine-Gd-DTPA was not significantly higher in infarcted regions of the myocardium compared to normal tissue. However, infarcted myocardium displayed an increased permeability to the small molecular weight Gd-DTPA. We conclude that microvascular damage may not be sufficient to allow the extravasation of polylysine-Gd-DTPA in infarcted myocardium.
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Affiliation(s)
- J Mark
- Institute for Biodiagnostics, National Research Council Canada, Winnipeg, MB, Canada
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Jiang Z, Li F, Wan Y, Han Z, Yuan W, Cao L, Deng Y, Peng X, Chen F, Fan X, Liu X, Dai G, Wang Y, Zeng Q, Shi Y, Zhou Z, Chen Y, Xu W, Luo S, Chen S, Ye X, Mo X, Wu X, Li Y. LASS5 Interacts with SDHB and Synergistically Represses p53 and p21 Activity. Curr Mol Med 2016; 16:582-90. [DOI: 10.2174/1566524016666160607090012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 05/20/2016] [Accepted: 05/30/2016] [Indexed: 11/22/2022]
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Xu W, Wang Y, Zhou J, Zhu X, Zhang S, Yuan W, Liu X, Shi Y, Cao L, Zeng Q, Jiang Z, Ye X, Wan Y, Peng X, Deng Y, Chen F, Wang X, Dai G, Luo S, Fan X, Mo X, Wu X, Li Y. Cardiac Specific Overexpression of hHole Attenuates Isoproterenol-Induced Hypertrophic Remodeling through Inhibition of Extracellular Signal-Regulated Kinases (ERKs) Signalling. Curr Mol Med 2016; 16:515-23. [PMID: 27211802 DOI: 10.2174/1566524016666160523143704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 05/01/2016] [Accepted: 05/12/2016] [Indexed: 11/22/2022]
Abstract
The human Hole gene (hHole) encodes a six-transmembrane protein with 319- amino acids. Our previous study showed that hHole was strongly expressed in adult heart and may act as a suppressor of extracellular signal-regulated kinases (ERKs), overactivation of which contributed to pathological cardiac hypertrophy. In this study, it was observed that Hole expression was up-regulated in murine hypertrophic hearts. In a cardiac specific transgenic mouse model, it was observed that overexpression of hHole specifically in heart attenuated cardiac hypertrophy and fibrosis induced by isoproterenol (ISO), with blunted transcriptions of ERK1/2, total ERK1/2 proteins and phosphorylated ERK1/2 (p-ERK1/2) levels. Furthermore, overexpression of hHole in mice by hydrodynamic tail-vein injection with hHole plamids also inhibited cardiac hypertrophy induced by ISO. Our work identified hHole as a novel repressor of cardiac hypertrophy, and provided new insights into the possible target for the prevention or treatment of cardiac diseases.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Y Li
- The Center for Heart Development, Key Lab of MOE for Development Biology and Protein Chemistry, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
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Cheng AL, Cornelio G, Shen L, Prince T, Yang TS, Chung IJ, Dai G, Lin JK, Sharma A, Yeh KH, Ma B, Zaatar A, Guan Z, Masood N, Srimuninnimit V, Cheung Yau T, Beier F, Chatterjee S, Lim R. 149PD Association between early tumour shrinkage (ETS) and outcomes in RAS-wild type (WT) patients (pts) with metastatic colorectal cancer (mCRC) receiving first-line FOLFOX or FOLFIRI + cetuximab every other week in the APEC study. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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25
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Zhang X, Shen L, Lu Z, Liu W, Liu T, Hu B, Li W, Fan Q, Xu J, Xu N, Bai Y, Pan Y, Xu Q, Bai W, Xia L, Gao Y, Wang W, Shu Y, Dai G, Feng J. 144O Comparison of efficacy and safety of paclitaxel and capecitabine followed by capecitabine as maintenance therapy versus cisplatin and capecitabine therapy for advanced gastric cancer: a multicentre, randomised, active-controlled phase III study. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.05] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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26
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Xu Y, Ma X, An J, Ding J, Dai G, Liu Z, Song Z, Lin N. Treatment with QiBaoMeiRan, a Chinese herbal formula, prevents bone loss in ovariectomized rat. Climacteric 2015; 19:98-106. [DOI: 10.3109/13697137.2015.1053861] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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27
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Li ZB, Huang YS, Shangguan JB, Ning YF, Yi Y, Dai G. Isolation and characterization of microsatellite loci in Branchiostoma belcheri Gray (Amphioxus). Genet Mol Res 2015; 14:10224-7. [PMID: 26345958 DOI: 10.4238/2015.august.28.5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Branchiostoma belcheri Gray is a second-class, nationally protected protochordate in China. We developed 10 novel polymorphic sites in B. belcheri, which were examined using a population of 30 wild individuals from Xiamen, China. The polymorphism information content ranged between 0.141 and 0.681, and the number of alleles varied from 2 to 5. The expected and observed heterozygosities varied between 0.1528 and 0.6920, and between 0.1429 and 0.5000, respectively. These novel microsatellite markers will facilitate the genetic analysis and protection of wild B. belcheri individuals, and the possible re-stocking of the species in the long-term.
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Affiliation(s)
- Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - Y Yi
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
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28
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Li ZB, Dai G, Shangguan JB, Ning YF, Li YY, Chen RB, Yuan Y, Huang YS. Isolation and characterization of microsatellite markers of sea cucumber Stichopus horrens. Genet Mol Res 2015; 14:8496-9. [PMID: 26345778 DOI: 10.4238/2015.july.28.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Curry fish (Stichopus horrens) is a tropical holothurian species and is widely distributed in the India-West Pacific. In the present study, 9 polymorphic microsatellite loci were isolated and characterized for S. horrens. These loci were tested in 30 individuals from Hainan Island in China. The number of alleles ranged from 2 to 5. The polymorphism information content ranged from 0.348-0.584. The levels of observed and expected heterozygosities varied from 0.1500-0.8000 and from 0.2014-0.5000, respectively. Most loci were in Hardy-Weinberg equilibrium, except HCS1-27 and HCS2-7, after sequential Bonferroni's correction, and no significant linkage disequilibrium was detected for any pairwise combination of loci. These polymorphic microsatellite loci will be useful for studying population structure and conservation strategy design for S. horrens.
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Affiliation(s)
- Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - Y Y Li
- Fisheries College, Jimei University, Xiamen, China
| | - R B Chen
- Fisheries College, Jimei University, Xiamen, China
| | - Y Yuan
- Fisheries College, Jimei University, Xiamen, China
| | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
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29
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Dong Y, Huang J, Li G, Li L, Li W, Li X, Liu X, Liu Z, Lu Y, Ma A, Sun H, Wang H, Wen X, Xu D, Yang J, Zhang J, Zhao H, Zhou J, Zhu L, Committee Members:, Bai L, Cao K, Chen M, Chen M, Dai G, Ding W, Dong W, Fang Q, Fang W, Fu X, Gao W, Gao R, Ge J, Ge Z, Gu F, Guo Y, Han H, Hu D, Huang W, Huang L, Huang C, Huang D, Huo Y, Jin W, Ke Y, Lei H, Li X, Li Y, Li D, Li G, Li X, Li Z, Liang Y, Liao Y, Liu G, Ma A, Ma C, Ma D, Ma Y, Shen L, Sun J, Sun C, Sun Y, Tang Q, Wan Z, Wang H, Wang J, Wang S, Wang D, Wang G, Wang J, Wu Y, Wu P, Wu S, Wu X, Wu Z, Yang J, Yang T, Yang X, Yang Y, Yang Z, Ye P, Yu B, Yuan F, Zhang S, Zhang Y, Zhang R, Zhang Y, Zhang Y, Zhao S, Zhou X. Guidelines for the prevention, diagnosis, and treatment of infective endocarditis in adults: The Task Force for the Prevention, Diagnosis, and Treatment of Infective Endocarditis in Adults of Chinese Society of Cardiology of Chinese Medical Association, and of the Editorial Board of Chinese Journal of Cardiology. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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30
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Yuan Y, Li ZB, Ning YF, Deng HW, Shangguan JB, Huang YS, Dai G. Development and characterization of new microsatellite markers of Fenneropenaeus penicillatus. Genet Mol Res 2015; 14:6679-82. [PMID: 26125876 DOI: 10.4238/2015.june.18.11] [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
Thirteen new polymorphic microsatellite markers in Fenneropenaeus penicillatus were isolated and characterized. The polymorphism of the thirteen microsatellite markers was tested by 30 individuals from Lianjiang, China. It showed that the number of al-leles per locus ranged from 3 to 6 and the Polymorphism Information Content (PIC) was from 0.324 to 0.706. The observed and expected heterozygosities were 0.3217-0.8023 and 0.1977-0.6783, respectively. Only one loci (LJ-19) deviated significantly from Hardy-Weinberg equilibrium (HWE) (P < 0.00385) after Bonferroni correction, while the other twelve markers were in HWE after Bonferroni correction (P > 0.00385). The thirteen polymorphic microsatellite markers could pro-vide more genetic data for further research on cultivation and recovery of F. penicillatus.
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Affiliation(s)
- Y Yuan
- Fisheries College, Jimei University, Xiamen, China
| | - Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - H W Deng
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
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31
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Li ZB, Dai G, Shangguan JB, Ning YF, Li YY, Chen RB, Huang YS, Yuan Y. Isolation and characterization of polymorphic microsatellite loci in the sea cucumber Holothuria scabra. Genet Mol Res 2015; 14:6529-32. [PMID: 26125857 DOI: 10.4238/2015.june.12.5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The sea cucumber Holothuria scabra is an endangered species. In this study, nine new polymorphic microsatellite loci were developed and tested in 30 individuals. The number of alleles ranged from 2 to 5, and the observed and expected heterozygosities ranged from 0.1200 to 0.7391 and from 0.2408 to 0.5983, respectively. No loci significantly deviated from the Hardy-Weinberg equilibrium af-ter a Bonferroni correction, and no significant linkage disequilibrium was found between pairs of loci. These polymorphic microsatellite loci will be useful in studying the genetic diversity of H. scabra and its conservation.
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Affiliation(s)
- Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | | | - R B Chen
- Fisheries College, Jimei University, Xiamen, China
| | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
| | - Y Yuan
- Fisheries College, Jimei University, Xiamen, China
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32
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Li ZB, Li QH, Shangguan JB, Ning YF, Dai G. Screening the first set of polymorphic microsatellite loci in Lunella coronata granulata (Turbinidae). Genet Mol Res 2015; 14:6319-22. [PMID: 26125835 DOI: 10.4238/2015.june.11.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Lunella coronata granulata, from the family Turbini-dae, is an economically important species. The first set of 10 poly-morphic microsatellite loci was screened from L. coronata granulata, and 30 individuals were used to analyze the degree of polymorphism in these loci. The level of observed and expected heterozygosity was 0.0667-0.7333 and 0.0644-0.6628, respectively. The polymorphism information content varied from 0.305 to 0.559. Eight loci were in Hardy-Weinberg equilibrium (HWE) (P > 0.05), while two loci devi-ated significantly from the HWE after Bonferroni's correction (P < 0.005). The isolated microsatellite loci can be utilized in studies of population genetic analysis and they provide important genetic mark-ers for construction of genetic linkage maps and genetic breeding of L. coronata granulata resources.
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Affiliation(s)
- Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - Q H Li
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
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33
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Li ZB, Li QH, Ning YF, Shangguan JB, Dai G, Chen LN, Cao YY, Chen XJ. Development and characterization of microsatellite loci in Megalonibea fusca. Genet Mol Res 2015; 14:4633-6. [PMID: 25966237 DOI: 10.4238/2015.may.4.22] [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
Megalonibea fusca is a commercially important large edible fish. In this study, the first set of 10 polymorphic microsatellite loci for M. fusca was developed and characterized. The number of alleles per locus ranged from two to five, with the observed and expected heterozygosities ranging from 0.0667 to 0.7667, and from 0.0644 to 0.5828, respectively. Most of the loci were in Hardy-Weinberg equilibrium (P > 0.05), except for two loci (Mf25 and Mf30) after a Bonferroni's correction (P < 0.005). These informative microsatellite markers will be useful in further studies of the population and conservation genetics of this species.
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Affiliation(s)
- Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - Q H Li
- Fisheries College, Jimei University, Xiamen, China
| | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | | | - G Dai
- Fisheries College, Jimei University, Xiamen, China
| | - L N Chen
- Fisheries College, Jimei University, Xiamen, China
| | - Y Y Cao
- Fisheries College, Jimei University, Xiamen, China
| | - X J Chen
- Fisheries College, Jimei University, Xiamen, China
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34
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Huang YS, Li QH, Li ZB, Shangguan JB, Ning YF, Dai G. Isolation and characterization of novel polymorphic microsatellite loci in Atrina vexillum Born (Pinnidae). Genet Mol Res 2015; 14:3541-4. [PMID: 25966121 DOI: 10.4238/2015.april.17.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The pen shell, Atrina vexillum Born, is an edible shellfish that is widely consumed in the Asia-Pacific region. In this study, 11 polymorphic microsatellite loci were isolated from A. vexillum, and 30 wild individuals were used to evaluate the degree of polymorphism of these markers. The number of alleles per locus ranged from 3 to 8. The polymorphism information content varied from 0.199 to 0.831. The observed and expected heterozygosities were 0.1000-0.8667 and 0.1244-0.8356, respectively. Two loci deviated significantly from the Hardy-Weinberg equilibrium (HWE) after a Bonferroni correction, while the other nine loci were at HWE. These microsatellite loci will be useful in further studies on population genetic analyses, and will provide important genetic data for the conservation and recovery of A. vexillum.
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Affiliation(s)
- Y S Huang
- Fisheries College, Jimei University, Xiamen, China
| | - Q H Li
- Fisheries College, Jimei University, Xiamen, China
| | - Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
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35
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Deng HW, Li ZB, Dai G, Yuan Y, Ning YF, Shangguan JB, Huang YS. Isolation of new polymorphic microsatellite markers from the marbled rockfish Sebastiscus marmoratus. Genet Mol Res 2015; 14:758-62. [PMID: 25730013 DOI: 10.4238/2015.january.30.19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The marbled rockfish, Sebastiscus marmoratus, is an important commercially near-shore fish that inhabits the beach rocky bottom from Japan to the South China Sea. Eleven polymorphic microsatellite loci were developed from S. marmoratus and were used to identify polymorphisms in 30 samples from a wild population. The allele locus number ranged from 2 to 7. Polymorphism data content ranged from 0.032 to 0.751. The observed and expected heterozygosity levels were 0.0333-0.9667 and 0.0328-0.7675, respectively. Two loci, Smd1-112 and Smd2-80, deviated from Hardy-Weinberg equilibrium. These polymorphic microsatellite markers will facilitate further studies of genetic diversity and genetic differentiation of S. marmoratus.
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Affiliation(s)
- H W Deng
- Fisheries College, Jimei University, Xiamen, China
| | - Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
| | - Y Yuan
- Fisheries College, Jimei University, Xiamen, China
| | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
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36
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Dai G, Li ZB, Shangguan JB, Ning YF, Deng HW, Yuan Y, Huang YS, Yang H, Lu J. Development and characterization of polymorphic microsatellite loci in the sea cucumber Holothuria leucospilota. Genet Mol Res 2015; 14:538-41. [PMID: 25729989 DOI: 10.4238/2015.january.26.8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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
Holothuria leucospilota is a tropical holothurian species that is widely distributed in the tropical and sub-tropical India-Western Pacific Region. Eight polymorphic microsatellite loci were developed from H. leucospilota by using the protocol fast isolation by amplified fragment length polymorphism of sequences containing repeats and tested in 30 individuals from Hainan Island in China. The number of alleles was 2-6 and polymorphism information content ranged from 0.371-0.694. The levels of expected and observed heterozygosities varied from 0.3913-0.6701 and from 0.1154-0.7000, respectively. No significant linkage disequilibrium was detected for any pairwise combination of loci. Only loci YZHS1-42 deviated from Hardy-Weinberg equilibrium. These polymorphic microsatellite loci may be useful for germplasm conservation of H. leucospilota.
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Affiliation(s)
- G Dai
- Fisheries College, Jimei University, Xiamen, China
| | - Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - H W Deng
- Fisheries College, Jimei University, Xiamen, China
| | - Y Yuan
- Fisheries College, Jimei University, Xiamen, China
| | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
| | - H Yang
- Fisheries College, Jimei University, Xiamen, China
| | - J Lu
- Fisheries College, Jimei University, Xiamen, China
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Ning YF, Li ZB, Li QH, Dai G, Shangguan JB, Yuan Y, Huang YS. Isolation and characterization of novel microsatellite markers for molecular genetic diversity in Siganus fuscescens. Genet Mol Res 2015; 14:89-92. [PMID: 25729939 DOI: 10.4238/2015.january.15.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The rabbitfish Siganus fuscescens is an economically valuable species that is widely distributed throughout the estuaries, intertidal, and offshore coasts of the Indo-Pacific and eastern Mediterranean. Ten novel microsatellite loci from the genome of S. fuscescens were developed using the fast isolation protocol with amplified fragment length polymorphism of sequences containing repeats. Polymorphisms in these 10 microsatellite markers were determined from 32 wild individuals. The number of alleles per locus and the polymorphism information content ranged from 2 to 5 and from 0.059 to 0.668, respectively. The observed and expected heterozygosities varied from 0.063 to 0.781 and from 0.062 to 0.731, respectively. Although 1 locus (LZY-X7, P < 0.005) showed significant deviation from the Hardy-Weinberg equilibrium, no deviations were detected in the other 9 loci. These microsatellite loci may be useful for further population genetic studies, conservation studies, population structure assessment, and linkage map construction of S. fuscescens.
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Affiliation(s)
- Y F Ning
- Fisheries College, Jimei University, Xiamen, China
| | - Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - Q H Li
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
| | | | - Y Yuan
- Fisheries College, Jimei University, Xiamen, China
| | - Y S Huang
- Fisheries College, Jimei University, Xiamen, China
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38
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He J, Dai G, Peng H, He H. 3D-Qsar on 1-Substituted Phenoxyacetoxyalkylphosphonates and Phosphinates Using CoMFA and CoMSIA. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.931396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Junbo He
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education and College of Chemistry, Central China Normal University, Wuhan, China
| | - Guoqiang Dai
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education and College of Chemistry, Central China Normal University, Wuhan, China
| | - Hao Peng
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education and College of Chemistry, Central China Normal University, Wuhan, China
| | - Hongwu He
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education and College of Chemistry, Central China Normal University, Wuhan, China
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Shangguan JB, Li ZB, Li QH, Dai G, Ning YF. Screening and characterization of new microsatellite markers in Fenneropenaeus penicillatus. Genet Mol Res 2014; 13:6079-82. [PMID: 25117365 DOI: 10.4238/2014.august.7.22] [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
Fenneropenaeus penicillatus, with high protein and low fat, is a commercially important aquatic product in China. Microsatellite loci were developed according to the protocol of fast isolation by amplified fragment length polymorphism of sequences containing repeats. Eight new polymorphic microsatellite markers for F. penicillatus were identified, and 32 wild individuals were used to evaluate the degree of polymorphism of these markers. The polymorphism information content ranged from 0.2703 to 0.7598, and the number of alleles per locus varied from 3 to 6. The observed and expected heterozygosities were 0.1613-0.5556 and 0.2347-0.7387, respectively. No significant deviations from Hardy-Weinberg equilibrium (P > 0.00625) were detected. These polymorphic microsatellite loci will be useful to study the genetic diversity and population structure of F. penicillatus.
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Affiliation(s)
| | - Z B Li
- Fisheries College, Jimei University, Xiamen, China
| | - Q H Li
- Fisheries College, Jimei University, Xiamen, China
| | - G Dai
- Fisheries College, Jimei University, Xiamen, China
| | - Y F Ning
- Fisheries College, Jimei University, Xiamen, China
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Zheng P, Liu J, Mai S, Yuan Y, Wang Y, Dai G. Regulation of signal transducer and activator of transcription 3 and apoptotic pathways by betaine attenuates isoproterenol-induced acute myocardial injury in rats. Hum Exp Toxicol 2014; 34:538-47. [PMID: 25080425 DOI: 10.1177/0960327114543936] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The present study was designed to investigate the cardioprotective effects of betaine on acute myocardial ischemia induced experimentally in rats focusing on regulation of signal transducer and activator of transcription 3 (STAT3) and apoptotic pathways as the potential mechanism underlying the drug effect. Male Sprague Dawley rats were treated with betaine (100, 200, and 400 mg/kg) orally for 40 days. Acute myocardial ischemic injury was induced in rats by subcutaneous injection of isoproterenol (85 mg/kg), for two consecutive days. Serum cardiac marker enzyme, histopathological variables and expression of protein levels were analyzed. Oral administration of betaine (200 and 400 mg/kg) significantly reduced the level of cardiac marker enzyme in the serum and prevented left ventricular remodeling. Western blot analysis showed that isoproterenol-induced phosphorylation of STAT3 was maintained or further enhanced by betaine treatment in myocardium. Furthermore, betaine (200 and 400 mg/kg) treatment increased the ventricular expression of Bcl-2 and reduced the level of Bax, therefore causing a significant increase in the ratio of Bcl-2/Bax. The protective role of betaine on myocardial damage was further confirmed by histopathological examination. In summary, our results showed that betaine pretreatment attenuated isoproterenol-induced acute myocardial ischemia via the regulation of STAT3 and apoptotic pathways.
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Affiliation(s)
- P Zheng
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - J Liu
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - S Mai
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - Y Yuan
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - Y Wang
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China
| | - G Dai
- Department of Pharmaceutical Engineering, College of Chemical and Materials Engineering, Kaili University, Kaili, Guizhou, People's Republic of China
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Li QH, Li ZB, Dai G, Chen XJ, Chen LN, Cao YY, Shangguan JB, Ning YF. Characterization of new microsatellite markers of Siganus fuscescens (Siganidae). Genet Mol Res 2013; 12:2751-4. [PMID: 23979899 DOI: 10.4238/2013.july.30.12] [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
Siganus fuscescens, which is a small commercially important marine fish, is wildly distributed in shallow waters throughout the tropical and subtropical Indo-Pacific and Eastern Mediterranean regions. It is part of a group known as rabbitfish. Fifteen new polymorphic microsatellite markers for S. fuscescens were identified, and 32 wild individuals were used to evaluate the degree of polymorphism of these markers. The number of alleles per locus ranged from 2 to 12, and the polymorphism information content ranged from 0.210 to 0.849. The observed and expected heterozygosities were 0.142-0.808 and 0.225-0.853, respectively. Although significant deviations from Hardy-Weinberg equilibrium were detected at 2 loci (Sf1-37-2 and Sf1-47), no significant deviations were detected at the other 13 loci. These microsatellite markers will provide a useful tool for studies on genetic diversity and differentiation of S. fuscescens.
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Affiliation(s)
- Q H Li
- Fisheries College, Jimei University, Xiamen, China
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Abstract
Abstract
Glass mat thermoplastics (GMT) have the superior property/price ratio, they can be used in many industrial aspects. In this paper, through a 100mm-deep mold, the glass mat distribution, fiber orientation and mechanical properties of the part were studied under different blank designs. In conclusion, (1) Blank design has effect on the mat distribution and fiber orientation, and finally on the mechanical properties of the part. To a part, there is an optimum blank design, which will not greatly decrease the mechanical properties of the sheets in the final part. (2) In compression molding, interlaminar slippage, blank ejection and resin solidification result in mat distribution and fiber orientation.
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Affiliation(s)
- L. Zhang
- Lab. of Polymer Processing, East China University of Science & Technology, Shanghai, P. R. China
| | - G. Dai
- Lab. of Polymer Processing, East China University of Science & Technology, Shanghai, P. R. China
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Cao YY, Li ZB, Li QH, Chen XJ, Chen L, Dai G. Characterization of eight novel microsatellite markers in the green-lipped mussel Perna viridis (Mytilidae). Genet Mol Res 2013; 12:344-7. [PMID: 23420359 DOI: 10.4238/2013.february.7.4] [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
The green lipped mussel, also known as the Asian green mussel (Perna viridis) is a fast reproducing and valuable food source, but it is also considered an invasive species and can clog and damage pipes and marine equipment. Eight novel polymorphic microsatellite loci for P. viridis were isolated and characterized. Microsatellite polymorphism was evaluated in 30 individuals collected from Xiamen, China. The number of alleles per locus and the polymorphism information content ranged from 2 to 5 and from 0.3092 to 0.7031, respectively. The observed and expected heterozygosities were 0.1538-0.8400 and 0.1448-0.6833, respectively. The loci identified in this study could provide a useful tool for the genetic population structure analysis of P. viridis.
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Affiliation(s)
- Y Y Cao
- Fisheries College, Institute of Aquaculture Biotechnology, Jimei University, Xiamen, China
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Hua R, Shi J, Wang X, Yang J, Zheng P, Cheng H, Li M, Dai G, An Y. Analysis of the causes and types of traumatic spinal cord injury based on 561 cases in China from 2001 to 2010. Spinal Cord 2012. [PMID: 23184031 DOI: 10.1038/sc.2012.133] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVES A remarkable increase in traumatic spinal cord injury (TSCI) morbidity has occurred in China from 2001 to 2010 due to rapid industrial and economic development; this increase seriously threatens public health. The current study investigated the major causes and severity of TSCI in 561 hospitalized TSCI patients who came from all over China to the General Hospital of Chinese People's Armed Police Forces. METHODS Information (including each patient's age, gender, time and cause of injury and severity of spinal cord injury (SCI, complete or incomplete)) regarding 561 hospitalized TSCI patients whose injuries occurred between 2001 and 2010 was retrospectively analyzed. RESULTS Among the 561 patients, the youngest was 9 months old and the oldest was 67 years old; the average patient age was 34.74 ± 12.24 years. The sex ratio was 4.1:1 (male:female). The injuries were primarily caused by transportation accidents (51.2%), falling from a height (23.9%), tamping (8.6%), stumbling (8.0%), stabbing (3.0%) and crushing (1.8%). Although no statistically significant associations were observed between the different injury causes and severity of the injury, a statistically significant association was observed between the different injury causes and levels of the lesion. CONCLUSION Transportation accidents, falling from a height, tamping, stumbling, stabbing and crushing are the most common causes of TSCI. No statistically significant relationships were observed between certain injury causes and either complete or incomplete injury. However, different injury causes usually led to different levels of the lesion. No statistical differences were observed between the levels of the lesion and either complete or incomplete injury.
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Affiliation(s)
- R Hua
- Department of Stem Cell Transplantation, The General Hospital of Chinese People's Armed Police Forces, Beijing, China
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Xie K, Jia L, Xu D, Guo H, Xie X, Huang Y, Chen X, Bao W, Dai G, Wang J. Simultaneous Determination of Amoxicillin and Ampicillin in Eggs by Reversed-Phase High-Performance Liquid Chromatography with Fluorescence Detection using Pre-Column Derivatization. J Chromatogr Sci 2012; 50:620-4. [DOI: 10.1093/chromsci/bms052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Li J, Dai G, Cheng YB, Qi X, Geng MY. Polysialylation promotes neural cell adhesion molecule-mediated cell migration in a fibroblast growth factor receptor-dependent manner, but independent of adhesion capability. Glycobiology 2011; 21:1010-8. [DOI: 10.1093/glycob/cwr020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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47
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Liao XX, Lin JY, Wei HY, Li H, Li X, Liu R, Hu CL, Huang GQ, Dai G. e0225 Hydrogen sulfide inhabits neurons apoptosis in rats after cardiopulmonary resuscitation. Heart 2010. [DOI: 10.1136/hrt.2010.208967.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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48
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Freudenberger T, Dai G, Mayer P, Heim HK, Fischer J. P359 LENTIVIRAL OVEREXPRESSION OF HYALURONIC ACID SYNTHASES 1 AND 2 RESTORES ESTRADIOL-MEDIATED INHIBITION OF PDGF-INDUCED PROLIFERATION IN VASCULAR SMOOTH MUSCLE CELLS. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70426-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kim YR, Tejima E, Huang S, Atochin DN, Dai G, Lo EH, Huang PL, Bogdanov A, Rosen BR. In vivo quantification of transvascular water exchange during the acute phase of permanent stroke. Magn Reson Med 2009; 60:813-21. [PMID: 18816832 DOI: 10.1002/mrm.21708] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Mechanisms that underlie early ischemic damages to the blood-brain-barrier (BBB) are not well understood. This study presents a novel magnetic resonance imaging (MRI) technique using a widely available pulse sequence and a long-circulating intravascular contrast agent to quantify water movements across the BBB at early stages of stroke progression. We characterized the integrity of the BBB by measuring the flip angle dependence of the water exchange-affected MRI signal intensity, to generate an efficient quantitative index of vascular permeability (WEI, or water exchange index). We performed in vivo MRI experiments to measure the transvascular WEI immediately after the permanent filament occlusion of the middle cerebral artery of mice (n = 5), in which we monitored changes in blood volume (V(b)), apparent diffusion coefficient (ADC), and intra-/extravascular WEI for 4 hours. Statistically significant elevations (P < 0.05) of WEI in the ischemic tissue were observed as early as 1 hour after ischemic onset. Initial reduction of the apparent blood volume (V(app)) in the infarct cortex was followed by a continuous increase of V(app) over time. Although the measured ADC in the ipsilesional cortex continuously decreased, the abnormally high intra-/extravascular WEI remained constant at a significantly elevated level, indicating apparent BBB injury at this early stage of stroke.
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Affiliation(s)
- Y R Kim
- Athinoula A. Martinos Center for Biomedical Imaging/Radiology, Massachusetts General Hospital, Charleston, Massachusetts 02129, USA.
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Sazaki G, Dai G, Van Driessche A, Yoshizaki I, Matsui T, Otalora F, Tsukamoto K, Nakajima K. Single-molecule visualization on a protein crystal surface. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308092076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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