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Qi Q, Jiang Y, Zhou X, Lü Y, Xiao R, Bai J, Lou H, Sun W, Lian Y, Hao N, Li M, Chang J. Whole-genome sequencing analysis in fetal structural anomalies: novel phenotype-genotype discoveries. Ultrasound Obstet Gynecol 2024; 63:664-671. [PMID: 37842862 DOI: 10.1002/uog.27517] [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: 05/17/2023] [Revised: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 10/17/2023]
Abstract
OBJECTIVES The identification of structural variants and single-nucleotide variants is essential in finding molecular etiologies of monogenic genetic disorders. Whole-genome sequencing (WGS) is becoming more widespread in genetic disease diagnosis. However, data on its clinical utility remain limited in prenatal practice. We aimed to expand our understanding of implementing WGS in the genetic diagnosis of fetal structural anomalies. METHODS We employed trio WGS with a minimum coverage of 40× on the MGI DNBSEQ-T7 platform in a cohort of 17 fetuses presenting with aberrations detected by ultrasound, but uninformative findings of standard chromosomal microarray analysis (CMA) and exome sequencing (ES). RESULTS Causative genetic variants were identified in two families, with an increased diagnostic yield of 11.8% (2/17). Both were exon-level copy-number variants of small size (3.03 kb and 5.16 kb) and beyond the detection thresholds of CMA and ES. Moreover, to the best of our knowledge, we have described the first prenatal instance of the association of FGF8 with holoprosencephaly and facial deformities. CONCLUSIONS Our analysis demonstrates the clinical value of WGS in the diagnosis of the underlying etiology of fetuses with structural abnormalities, when routine genetic tests have failed to provide a diagnosis. Additionally, the novel variants and new fetal manifestations have expanded the mutational and phenotypic spectrums of BBS9 and FGF8. © 2023 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- Q Qi
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Y Jiang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - X Zhou
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Y Lü
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - R Xiao
- National Engineering Laboratory for Key Technology of Birth Defect Control and Prevention, Screening and Diagnostic R&D Center, Zhejiang, China
| | - J Bai
- Becreative Lab Co. Ltd, Beijing, China
| | - H Lou
- Becreative Lab Co. Ltd, Beijing, China
| | - W Sun
- Biosan Biochemical Technologies Co. Ltd., Zhejiang, China
| | - Y Lian
- Biosan Biochemical Technologies Co. Ltd., Zhejiang, China
| | - N Hao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - M Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - J Chang
- Department of Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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Zhou Z, Lian Y, Zhu L, Zhang H, Li Z, Wang M. Platinum Nanoparticles Prevent the Resistance of Pseudomonas aeruginosa to Ciprofloxacin and Imipenem: Mechanism Insights. ACS Nano 2023; 17:24685-24695. [PMID: 38048441 DOI: 10.1021/acsnano.3c04167] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Metal nanoparticles (MNPs) have recently gained extensive attention due to their broad-spectrum prospect, particularly in biomedical application. Here, we reveal that long-term exposure to platinum nanoparticles (Pt NPs) increases the susceptibility of Pseudomonas aeruginosa PAO1 to imipenem and ciprofloxacin. We exposed PAO1 to Pt NPs (a series of doses, varying from 0.125 to 35 μg/mL) for 60 days and characterized the evolved strains (ES) and compared with wild type (WT) to understand the mechanism of heightened sensitivity. We found that overexpression of oprD and downregulation of mexEF-oprN facilitate the intracellular accumulation of antibiotic, thus increasing susceptibility. Furthermore, loss-of-function mutations were discovered in regulators lasR and mexT. Cloning intact lasR from wild-type (WT) into ES slightly improves imipenem resistance. Strikingly, cloning mexT from WT into ES reverts the imipenem and ciprofloxacin resistance to the original level. Briefly, the increase of membrane permeability controlled by mexT made PAO1 greatly susceptible to imipenem and ciprofloxacin, and the decrease of quorum sensing mediated by lasR made PAO1 slightly susceptible to imipenem. Overall, these results reveal an antibiotic susceptibility mechanism from prolonged exposure to MNPs, which provides a promising approach to prevent antibiotic resistance.
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Affiliation(s)
- Zhiruo Zhou
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yulu Lian
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Lin Zhu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Haibo Zhang
- China National Demonstration Center for Experimental Chemistry, Wuhan University, Wuhan 430072, China
| | - Zhangqiang Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Meizhen Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
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Liu X, Lu Y, Lian Y, Chen Z, Xia J, Meng L, Qi Z. Erratum to 'Macrophage Depletion Improves Chronic Rejection in Rats With Allograft Heart Transplantation' [Trans Proc 52 (2020) 992-1000]. Transplant Proc 2023; 55:1762. [PMID: 32703674 DOI: 10.1016/j.transproceed.2020.04.004] [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: 10/23/2022]
Affiliation(s)
- X Liu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, Affiliated Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Y Lu
- Department of General Surgery, Affiliated Zhongshan Hospital of Xiamen University, Xiamen, China
| | - Y Lian
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of Thoracic Surgery, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China
| | - Z Chen
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, The Second Hospital of Xiamen City, Xiamen, China
| | - J Xia
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - L Meng
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - Z Qi
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China.
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Wang M, Lian Y, Wang Y, Zhu L. The role and mechanism of quorum sensing on environmental antimicrobial resistance. Environ Pollut 2023; 322:121238. [PMID: 36758922 DOI: 10.1016/j.envpol.2023.121238] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [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: 10/22/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
As more environmental contaminants emerging, antibiotics and antibiotic resistance genes (ARGs) have caused a substantial increase of antimicrobial resistance (AMR) in environment. Quorum sensing (QS) is a bacterial cell-to-cell communication process that regulates many traits and gene expression, including ARGs and the related genes that contribute to AMR development. Herein, we summarize the role, physiology, and genetic mechanisms of bacterial QS in AMR development in the environment. First, the effect of QS on AMR is introduced. Next, the role of QS in bacterial physiological behaviors that promote AMR development, including membrane permeability, tactic movement, biofilm formation, persister formation, and small colony variants (SCVs), is systematically analyzed. Furthermore, the regulation of QS on the expression of ARGs, generation of reactive oxygen species (ROS), which affects ARGs formation, and horizontal gene transfer (HGT), which accelerates the transmission of ARGs, are discussed to reveal the molecular mechanism for AMR development. This review provides a reference for a better understanding of AMR evolution and novel insights into AMR prevention.
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Affiliation(s)
- Meizhen Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310012, China
| | - Yulu Lian
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Yujie Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Lin Zhu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.
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Zhu L, Lian Y, Lin D, Lin G, Wang M. The profile and persistence of clinically critical antibiotic resistance genes and human pathogenic bacteria in manure-amended farmland soils. Front Cell Infect Microbiol 2022; 12:1073118. [PMID: 36506020 PMCID: PMC9729351 DOI: 10.3389/fcimb.2022.1073118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/01/2022] [Indexed: 11/25/2022] Open
Abstract
Introduction Microbial contamination in farmlands is usually underestimated and understudied. Different fertilization times and manure origins might introduce and change the microorganism diversity in farmland soils and thus might influence the abundance and persistence of microbial contamination including antibiotic resistance genes (ARGs), human bacterial pathogens (HBPs), and virulence factor genes (VFGs). Methods A 0.5-/1.5-year fertilization experiment was performed, and metagenomic sequencing was conducted to quantify microbial contamination. The resistomes of soil samples revealed that ARGs against antibiotics which were extensively used in veterinary medicine as well as clinically critical ARGs (CCARGs) persisted in manure-amended soils. Here the extended-spectrum beta-lactamase and carbapenemase bla genes, the high-level mobilized colistin resistance gene mcr, the tigecycline resistance gene tet(X), and the vancomycin resistance gene van, all of which can circumvent the defense line of these "last-resort" antibiotics were selected to investigate CCARG pollution in farm environments. Results A total of 254 potential HBPs and 2106 VFGs were detected in soil samples. Overall, our results revealed that (1) farmland soils could serve as a reservoir of some important bla, mcr, tet(X), and van gene variants, (2) the diversity and relative abundance of HBPs and VFGs increased significantly with incremental fertilization times and were discrepant among different manureamended soils, and (3) most CCARGs and VFGs coexisted in HBPs. Disscusion The results of this study suggested a biological risk of manure in spreading antimicrobial resistance and pathogenicity.
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Affiliation(s)
- Lin Zhu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Yulu Lian
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Da Lin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Guoping Lin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Meizhen Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China,Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, China,*Correspondence: Meizhen Wang,
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Zhu L, Lian Y, Lin D, Huang D, Yao Y, Ju F, Wang M. Insights into microbial contamination in multi-type manure-amended soils: The profile of human bacterial pathogens, virulence factor genes and antibiotic resistance genes. J Hazard Mater 2022; 437:129356. [PMID: 35728317 DOI: 10.1016/j.jhazmat.2022.129356] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [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: 04/29/2022] [Revised: 06/06/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Concerns regarding biological risk in environment have garnered increasing attention. Manure has been believed to be a significant source of antibiotic resistance genes (ARGs) in agricultural soil. Nevertheless, the profile of microbial contamination including ARGs, virulence factor genes (VFGs) and human bacterial pathogens (HBPs) in different manure-amended soils remain largely unknown. Here, we conducted the systematic metagenome-based study to explore changes in resistome, VFGs and HBPs in soils treated by frequently-used manures. The results revealed that many manure-borne ARGs, VFGs, and HBPs could be spreaded into soils, and their diversity and abundance were significantly different among chemical fertilizer, pig manure, chicken manure, cow dung and silkworm excrement application. A total of 157 potential HBPs accounting about 1.33% of total bacteria were detected. The main ARGs transferred from manures to soil conferred resistance to vancomycin and macrolide-lincosamide-streptogramin. The series analysis revealed positive co-occurrence patterns of ARGs-HBPs, VFGs-HBPs and ARGs-VFGs. Microbial contamination were more serious in pig manure and silkworm excrement sample than in the other samples, implying the usage of these two manures increased the risk of HBPs and dissemination of ARGs. This study confirmed the prevalence and discrepancy of resistome, VFGs and HBPs in different manure-amended soils.
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Affiliation(s)
- Lin Zhu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yulu Lian
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Da Lin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Dan Huang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yanlai Yao
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Feng Ju
- Key laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China
| | - Meizhen Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
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Wang C, Li F, Lian Y, He X. Clinical Analysis of Targeted Therapy Combined with Immunotherapy for Neoadjuvant Treatment of Advanced Hepatocellular Carcinoma. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.spl.595] [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: 01/28/2023] Open
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Li Y, Xia L, Chen J, Lian Y, Dandekar AA, Xu F, Wang M. Resistance elicited by sub-lethal concentrations of ampicillin is partially mediated by quorum sensing in Pseudomonas aeruginosa. Environ Int 2021; 156:106619. [PMID: 33989839 DOI: 10.1016/j.envint.2021.106619] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/29/2021] [Accepted: 05/01/2021] [Indexed: 06/12/2023]
Abstract
The rapid increase of antibiotic resistance is a serious challenge around the world. Antibiotics are present in various environments at sub-lethal concentrations, but how resistance emerges under sub-lethal conditions is not fully clear. In this study, we evolved Pseudomonas aeruginosa PAO1 under sub-lethal conditions, in the presence of either 15-30 μg/mL or 150-300 μg/mL of ampicillin. We found a ~ 5-6 fold increase in the minimum inhibitory concentration (MIC) among evolved isolates exposed to 15-30 μg/mL of ampicillin, and more than a 19-fold of increase in 150-300 μg/mL of ampicillin exposure. DNA sequencing revealed that mpl and ampD were frequently mutated in these resistant strains. We performed a transcriptome analysis of deletion mutations of mpl or ampD, compared to PAO1. Both showed a two-fold increase in expression of quorum sensing (QS) genes including lasR and rhlI/R; the heightened expression was positively correlated with the expression of the ampicillin resistance gene ampC. We queried if quorum sensing contributes to the increase in the ampicillin MIC. After adding the quorum quencher acylase I, the growth yield both decreased by roughly 50% for Δmpl in 2000 μg/mL of ampicillin and ΔampD in 4000 μg/mL of ampicillin. Addition of the QS signals into synthase mutants restored the higher MIC, but only for the rhlI/R circuit. This study highlights the involvement of QS in antibiotic resistance evolution, and shows the multifactorial contributors to the observed phenotypes.
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Affiliation(s)
- Yue Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
| | - Lexin Xia
- Department of Infectious Diseases, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Jian Chen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
| | - Yulu Lian
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
| | - Ajai A Dandekar
- Department of Medicine, University of Washington, Seattle, WA 98195, USA; Department of Microbiology, University of Washington, Seattle, WA 98195, USA
| | - Feng Xu
- Department of Infectious Diseases, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Meizhen Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
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Lian Y, Tian Y. The Clinical Study of the Effect of WBRT on Cognitive Function of Patients With Brain Metastasis of Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1543] [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: 11/25/2022]
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Dong F, Jiang M, Zhang Z, Li F, Lian Y. C1q/TNF-related protein-9 suppresses inflammation in synovial cells from patients with osteoarthritis. Scand J Rheumatol 2021; 51:368-373. [PMID: 34514937 DOI: 10.1080/03009742.2021.1946996] [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: 01/15/2023]
Abstract
Objective: Synovial inflammation contributes to cartilage degeneration and osteoarthritis (OA) development. Targeting the inflammation process may provide a promising strategy for OA treatment. It has been demonstrated that C1q/tumour necrosis factor-related protein-9 (CTRP9) has immunosuppression capabilities. Thus, we conducted this study to investigate the role of CTRP9 in OA and its therapeutic potential.Method: The expression level of CTRP9 was quantified in peripheral blood mononuclear cells (PBMCs), serum, and synovial cells (SCs) isolated from OA patients by quantitative polymerase chain reaction and enzyme-linked immunosorbent assay. The relationship between the expression level of CTRP9 and the disease activity of OA was determined. The inflammation-suppressing effects of CTRP9 were assessed in vitro.Results: The expression level of CTRP9 was increased in the PBMCs and serum of OA compared to healthy controls. The serum level of CTRP9 was found to be positively correlated with erythrocyte sedimentation rate, C-reactive protein, and visual analogue scale score. In addition, CTRP9 protein suppressed the expression of pro-inflammatory cytokines, including tumour necrosis factor-α, interleukin-6, and interleukin-1β, in PBMCs and SCs in vitro. CTRP9 was increased in OA patients and positively correlated with the disease activity. The recombinant CTRP9 had inflammation-suppressing activities in vitro.Conclusion: CTRP9 may have therapeutic potential for treating OA.Osteoarthritis (OA) is characterized as cartilage destruction resulting from synovial inflammation (1-6). According to the clinical symptoms and levels of inflammation, OA has been divided into primary generalized osteoarthritis (PGOA) and erosive inflammatory osteoarthritis (EIOA) (7). The only available treatment for OA is joint replacement. Thus, it is necessary to develop novel and effective therapeutic strategies to treat OA.Because synovial inflammation contributes to OA development, targeting the inflammation process may provide a promising strategy for OA treatment. Previous investigations showed that pro-inflammatory factors promoted OA development (8-10), while anti-inflammatory factors suppressed it (11-14). Thus, we conducted the present study to investigate the role of C1q/tumour necrosis factor-related protein-9 (CTRP9), an anti-inflammatory factor (15), in OA, and its therapeutic potential.
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Affiliation(s)
- F Dong
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - M Jiang
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - Z Zhang
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - F Li
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - Y Lian
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
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Liu X, Lu Y, Lian Y, Chen Z, Xia J, Meng L, Qi Z. Macrophage Depletion Improves Chronic Rejection in Rats With Allograft Heart Transplantation. Transplant Proc 2020; 52:992-1000. [PMID: 32122662 DOI: 10.1016/j.transproceed.2019.12.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 10/11/2019] [Accepted: 12/15/2019] [Indexed: 10/24/2022]
Abstract
BACKGROUND Macrophages may be important in chronic rejection after organ transplantation. This study aimed to investigate the possibility of depleting macrophages for a certain amount of time to alleviate chronic rejection in a heart transplant model of Fischer to Lewis rats. METHODS Clodronate liposome was injected abdominally to deplete macrophages for 2 time frames. The expression levels of ectodysplasin 1, arginase 1 (Arg1), chitinase-like lectin (Ym1), interferon gamma, tumor necrosis factor α (TNF-α), smooth muscle α-actin (α-SMA), monocyte chemoattractant protein 1 (MCP-1), and interleukin 10 (IL-10) were detected. RESULTS 1. The expression levels of α-SMA, interferon gamma, TNF-α, and MCP-1 and the transformation of peripheral T cells were lower after macrophage depletion for 2 or 4 weeks. 2. The expression levels of α-SMA, TNF-α, and MCP-1 and the transformation of peripheral T cells were even lower after 4 weeks compared with 2 weeks, except for interferon gamma. 3. A higher level of expression of Arg1 and Ym1 after macrophage depletion for 2 weeks was observed. 4. A higher level of expression of IL-10 after macrophage depletion for 2 weeks, but not 4 weeks, was also observed. CONCLUSIONS Macrophage clearance after heart transplantation alleviated chronic rejection probably via M2 polarization of regenerated macrophages, reduced T-lymphocyte proliferation, and changed the expression levels of interferon gamma, TNF-α, MCP-1, and IL-10.
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Affiliation(s)
- X Liu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, Affiliated Xiang'an Hospital of Xiamen University, Xiamen, China.
| | - Y Lu
- Department of General Surgery, Affiliated Zhongshan Hospital of Xiamen University, Xiamen, China
| | - Y Lian
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of Thoracic Surgery, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China
| | - Z Chen
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, The Second Hospital of Xiamen City, Xiamen, China
| | - J Xia
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - L Meng
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - Z Qi
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China.
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Chen L, Zhao W, Zhong G, Watts C, Gunn JP, Liu X, Lian Y, DLP Team. Thermal Analysis on Various Design Concepts of ITER Divertor Langmuir Probes. Fusion Science and Technology 2018. [DOI: 10.1080/15361055.2017.1415614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- L. Chen
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - W. Zhao
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - G. Zhong
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - C. Watts
- ITER Organization, Route de Vinon-sur-Verdon, CS 90046, 13067 St. Paul Lez Durance Cedex, France
| | | | - X. Liu
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - Y. Lian
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - DLP Team
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
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Ruppert K, Cauley J, Lian Y, Zgibor JC, Derby C, Solomon DH. The effect of insulin on bone mineral density among women with type 2 diabetes: a SWAN Pharmacoepidemiology study. Osteoporos Int 2018; 29:347-354. [PMID: 29075805 PMCID: PMC5818624 DOI: 10.1007/s00198-017-4276-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/13/2017] [Indexed: 12/12/2022]
Abstract
UNLABELLED This was a longitudinal study examining the effects of insulin use on bone mineral density loss. Insulin use was found to be associated with greater bone mineral density loss at the femoral neck among women with diabetes mellitus. INTRODUCTION Women with diabetes mellitus (DM) have higher bone mineral density (BMD) and experience slower BMD loss but have an increased risk of fracture. The data regarding the effect of insulin treatment on BMD remains conflicted. We examined the impact of insulin initiation on BMD. METHODS We investigated the annual changes in BMD associated with the new use of insulin among women with DM in the Study of Women's Health Across the Nation (SWAN). Propensity score (PS) matching, which is a statistical method that helps balance the baseline characteristics of women who did and did not initiate insulin, was used. Covariates with a potential impact on bone health were included in all models. Mixed model regression was used to test the change in BMD between the two groups. Median follow-up time was 5.4 years. RESULTS The cohort consisted of 110 women, mean age, 53.6 years; 49% white and 51% black. Women using insulin (n = 55) were similar on most relevant characteristics to the 55 not using insulin. Median diabetes duration for the user group was 10 vs. 5.0 years for the non-user group. There was a greater loss of BMD at the femoral neck among insulin users (- 1.1%) vs non-users (- 0.77%) (p = 0.04). There were no differences in BMD loss at the spine - 0.30% vs - 0.32% (p = 0.85) or at the total hip - 0.31% vs - 0.25 (p = 0.71), respectively. CONCLUSIONS Women with T2DM who initiated insulin experienced a more rapid BMD loss at the femoral neck as compared to women who did use insulin.
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Affiliation(s)
- K Ruppert
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 4420 Bayard St Suite 600, Pittsburgh, PA, 15260, USA.
| | - J Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 4420 Bayard St Suite 600, Pittsburgh, PA, 15260, USA
| | - Y Lian
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 4420 Bayard St Suite 600, Pittsburgh, PA, 15260, USA
| | - J C Zgibor
- Department of Epidemiology and Biostatistics, University of South Florida, Tampa, FL, USA
| | - C Derby
- Department of Neurology, Albert Einstein College of Medicine, New York, NY, USA
| | - D H Solomon
- Division of Rheumatology, Division of Pharmacoepidemiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Qiu C, Yin T, Zhang Y, Lian Y, You Y, Wang K, Zheng R, Shuai X. Ultrasound Imaging Based on Molecular Targeting for Quantitative Evaluation of Hepatic Ischemia-Reperfusion Injury. Am J Transplant 2017; 17:3087-3097. [PMID: 28489274 DOI: 10.1111/ajt.14345] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 11/21/2016] [Revised: 04/26/2017] [Accepted: 04/27/2017] [Indexed: 01/25/2023]
Abstract
The aim of the present study was to quantitatively diagnose and monitor the therapy response of hepatic ischemia-reperfusion injury (IRI) with the use of targeted ultrasound (US) imaging. Targeted microbubbles (MBs) were fabricated, and the binding of intracellular adhesion molecule 1 (ICAM-1) antibodies to MBs was observed. To establish a quantitative method based on targeted US imaging, contrast-enhanced US was applied for IRI rats. After andrographolide treatment, the IRI rats were subjected to the quantitative targeted US imaging for a therapeutic effect. Effective binding of ICAM-1 antibodies to MBs was observed. According to the quantitative targeted US imaging, the ICAM-1 normalized intensity difference (NID) in the IRI rats (38.74 ± 15.08%) was significantly higher than that in the control rats (10.08 ± 2.52%, p = 0.048). Further, different degrees of IRI (mild IRI, moderate to severe IRI) were distinguished by the use of the NID (37.14 ± 2.14%, 22.34 ± 1.08%, p = 0.002). Analysis of mRNA expression demonstrated the accuracy of analyzing the NID by using quantitative targeted US imaging (R2 = 0.7434, p < 0.001). Andrographolide treatment resulted in an obviously weakened NID of ICAM-1 (17.7 ± 4.8% vs 34.2 ± 6.6%, p < 0.001). The study showed the potential of the quantitative targeted US imaging method for the diagnosis and therapeutic monitoring of IRI.
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Affiliation(s)
- C Qiu
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - T Yin
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y Zhang
- Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Department of Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y Lian
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y You
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - K Wang
- Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Science, Beijing, China
| | - R Zheng
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - X Shuai
- PCFM Lab of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China.,Center for Biomedical Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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15
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Lian Y, Gao C, Wu Y, Xia J, Leng Y, Liu Y, Zhu M, Chen J, Qi Z. Suppression of Delayed Xenograft Rejection by Resveratrol in a Hamster-to-Rat Cardiac Transplantation Model. Transplant Proc 2017; 49:1483-1491. [DOI: 10.1016/j.transproceed.2017.03.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/09/2017] [Accepted: 03/30/2017] [Indexed: 12/13/2022]
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16
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Ji J, Liu T, Xiang B, Liu Z, Jia Y, Lian Y, Lin Z, Xu F, Liu W, Zhu H, Niu T, Pan L, Gong Y, Chang H, Huang J, Wu Y, Li J, He C, Xie L, Ma H, Tang Y, Guo Y, Kuang P, Dong T. A MULTI-CENTER STUDY OF GLIDE CHEMOTHERAPY CONSOLIDATED WITH AUTOLOGOUS STEM CELL TRANSPLANTATION FOR NEWLY DIAGNOSED STAGE IV AND RELAPSED EXTRANODAL NATURAL KILLER/T-CELL LYMPHOMA PATIENTS. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_105] [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: 02/05/2023]
Affiliation(s)
- J. Ji
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - T. Liu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - B. Xiang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Z. Liu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Jia
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Lian
- Hematology; Chengdu First People's Hospital; Chengdu China
| | - Z. Lin
- Hematology; Affiliated Hospital & Clinical Medical College of Chengdu University; Chengdu China
| | - F. Xu
- Hematology; Mianyang Central Hospital; Mianyang China
| | - W. Liu
- Pathology; West China Hospital of Sichuan University; Chengdu China
| | - H. Zhu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - T. Niu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - L. Pan
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Gong
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - H. Chang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - J. Huang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Wu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - J. Li
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - C. He
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - L. Xie
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - H. Ma
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Tang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Guo
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - P. Kuang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - T. Dong
- Hematology; West China Hospital of Sichuan University; Chengdu China
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Ding J, Xie M, Lian Y, Zhu Y, Peng P, Wang J, Wang L, Wang K. Long noncoding RNA HOXA-AS2 represses P21 and KLF2 expression transcription by binding with EZH2, LSD1 in colorectal cancer. Oncogenesis 2017; 6:e288. [PMID: 28112720 PMCID: PMC5294247 DOI: 10.1038/oncsis.2016.84] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 10/06/2016] [Accepted: 10/14/2016] [Indexed: 12/24/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have received increased attention as a new class of functional regulators involved in human carcinogenesis. HOXA cluster antisense RNA 2 (HOXA-AS2) is a 1048-bp lncRNA located between the HOXA3 and HOXA4 genes in the HOXA cluster that regulates gene expression at a transcription level. HOXA-AS2 is previously found to be overexpressed in gastric cancer (GC) and promotes GC cells proliferation. However, its potential role and molecular mechanism in colorectal cancer (CRC) are not known. Here, we identified that HOXA-AS2 is significantly upregulated in CRC tissue. In addition, increased HOXA-AS2 expression is associated with a larger tumor size and an advanced pathological stage in CRC patients. HOXA-AS2 knockdown significantly suppressed proliferation by blocking the G1/S transition and caused apoptosis of CRC cells in vitro and in vivo. The mechanistic investigations showed that HOXA-AS2 could interact with EZH2 (enhancer of zeste homolog 2), LSD1 (lysine specific demethylase 1) and recruit them to p21 (CDKN1A), KLF2 promoter regions to repress their transcription. Furthermore, the rescue experiments demonstrated that HOXA-AS2 oncogenic function is partly through regulating p21. In conclusion, our data suggest that HOXA-AS2 may function as an oncogene by modulating the multiple genes expression involved in CRC proliferation, and also provides a potential target for CRC therapy.
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Affiliation(s)
- J Ding
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - M Xie
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Jiangsu, PR China
| | - Y Lian
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - Y Zhu
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - P Peng
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - J Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - L Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - K Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
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18
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Ren XL, Liu P, Lian Y, Huang J, Zheng XY, Zhu YJ, Qiao J. [Effect of catheter choice during embryo transfer on the clinical outcome of in vitro fertilization-embryo transfer]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:905-909. [PMID: 27752179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To compare two flexible embryo catheters and determine whether clinical outcome differs in the in vitro fertilization-embryo transfer (IVF-ET) cycles. METHODS This prospective control study was conducted by one doctor between July 2012 and November 2013. In the study, 2 064 patients undergoing fresh embryo transfer by using IVF-ET/intracytoplasmic sperm injection (ICSI)-ET in Reproductive Medical Center of Peking University Third Hospital were recruited. The subjects were divided into two groups. Cook Sydney IVF embryo transfer catheters (product model: K-JETS-7019-SIVF) were used for embryo transfer in group 1 (n=949), and Frydman-CCD catheters (product model: 131230301) were used in group 2 (n=1 115). Pregnancy outcomes were compared between these two groups. RESULTS There was no significant difference in age, diagnosis for infertility and stimulation protocol used between the two groups. In addition, there was no difference in the number of oocytes collected and in the number and score of embryos transferred. The significantly higher implantation rate, clinical pregnancy rate, and live birth rate (34.40% vs. 26.92%, 51.21% vs. 41.52%, 42.57% vs. 33.09%, P<0.05) were observed in group 1 compared with group 2. The abortion rate was not significantly different between the two groups (11.93% vs. 15.98%, P>0.05). The proportion of difficult transfer was higher in group 1 than that in group 2 (5.27% vs. 3.41%, P<0.05). There was no difference in the clinical pregnancy rate and live birth rate between the two difficult transfer cycles. CONCLUSION The type of embryo transfer catheter affects the clinical outcome in IVF. Good clinical outcome can be obtained by using Cook Sydney IVF catheter, which is worthy of clinical promotion.
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Affiliation(s)
- X L Ren
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - P Liu
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - J Huang
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - X Y Zheng
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Y J Zhu
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - J Qiao
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
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Xia H, Gong Z, Lian Y, Zhou J, Wang X. Gene Expression Profile Regulated by CREB in K562 Cell Line. Transplant Proc 2016; 48:2221-34. [PMID: 27569974 DOI: 10.1016/j.transproceed.2016.04.023] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 03/14/2016] [Accepted: 04/25/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB) is a member of the CREB/activation transcription factor 1 family that binds to an octanucleotide cAMP response element consensus sequence in promoters of target genes. METHODS CREB has been shown to regulate a variety of cellular functions, including cell proliferation, survival, apoptosis, differentiation, metabolism, hematopoiesis, immune response, and neuronal activity. CREB was also identified as a proto-oncogene involving in transformation by promoting abnormal proliferation and survival of myeloid cells. To understand the mechanism of CREB functions in leukemogenesis, the transcriptional profiles from a K562 cell line in which CREB was knocked down were analyzed with the use of bioinformatics methods. RESULTS DAVID Bioinformatics Resources and Gene Set Enrichment Analysis (GSEA) were performed to identify the targets that are regulated by CREB. A total of 692 genes were up-regulated and 364 genes down-regulated. The up-regulated genes were significantly enriched in pathways of cancer and chronic myeloid leukemia. GSEA analysis showed expression of Notch1 pathway to be decreased and hypoxia-inducible factor (HIF) pathway to be activated. CONCLUSIONS Our results identified candidate gene sets that could be used to guide research on discovering the mechanism of CREB during leukemogenesis.
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Affiliation(s)
- H Xia
- Department of Blood Transfusion, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China.
| | - Z Gong
- Department of Hematology, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
| | - Y Lian
- Department of Central Laboratory, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
| | - J Zhou
- Department of Cardiology, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
| | - X Wang
- Department of Hematology, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
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Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Lian Y, Ma LL. [Outcome of treatment of Y chromosome AZFc microdeletion patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:607-611. [PMID: 29263498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To discuss the treatment options for patients with azoospermia factor (AZF) c microdeletion on Y chromosome. METHODS One hundred and eighty three patients, who were diagnosed as AZFc microdeletion on Y chromosome in Peking University Third Hospital, were recruited in our study. In order to get better treatment option for this kind of patients, we retrospectively analyzed their clinic data including the treatment process and pregnancy outcome and found out the characteristics of their semen. RESULTS Among the 183 patients, sperms can be found in ejaculated semen in 105 patients (57.4%, 105/183). One hundred and three patients (98.1%, 103/105) were diagnosed as severe or extremely severe oligospermia. Regular medication was given to 98 patients, 6 patients (6.1%, 6/98) of which got natural pregnancy. The other 99 patients who have sperms in their semen received intracytoplasmic sperm injection (ICSI), 68 patients (68.7%, 68/99) of which got pregnancy. Seventy eight patients were diagnosed as azoospermia among all the 183 patients. Forty nine patients received testicular sperm aspiration (TESA), and 21 patients choose to receive micro-TESE directly. Among the 49 patients with TESA, sperms were retrieved in 17 patients (34.7%, 17/49), and sperms were not retrieved in 32 patients (65.3%, 32/49), of which 12 patients (37.5%, 12/32) gave up treatment and 20 patients (62.5%, 20/32) choose micro-TESE. Among the 41 patients who choose to receive micro-TESE, operation has been done on 19 patients, of which 11 patients (57.9%, 11/19) got sperms. Among the 11 patients, TESA has been done on 6 patients before micro-TESE, of which 4 patients (66.6%, 4/6) got sperms. ICSI has already been done on 7 azoospermia AZFc microdeletion patients who underwent micro-TESE, of which 4 patients (57.1%, 4/7) get pregnancy. CONCLUSION AZFc microdeletion patients who had sperms were always diagnosed as severe or extremely severe oligospermia. ICSI was their first choice instead of drug therapy. For AZFc microdeletion patients who were diagnosed as azoospermia, TESA was one of their choices, however, the success rate is not high. Micro-TESE is still possible to get sperms even after the failure of TESA. Therefore, we may choose micro-TESE instead of TESA in some azoospermia patients in order to reduce surgical trauma on patients.
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Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
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Abstract
We explore different Skyrmion types in the lowest Landau level of graphene at a filling factor ν=±1. In addition to the formation of spin and valley pseudospin Skyrmions, we show that another type of spin-valley entangled Skyrmions can be stabilized in graphene due to an approximate SU(4) spin-valley symmetry that is affected by sublattice symmetry-breaking terms. These Skyrmions have a clear signature in spin-resolved density measurements on the lattice scale, and we discuss the expected patterns for the different Skyrmion types.
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Affiliation(s)
- Y Lian
- Laboratoire de Physique des Solides, Univ. Paris-Sud, Université Paris-Saclay, CNRS, UMR 8502, F-91405 Orsay Cedex, France
| | - A Rosch
- Institut für Theoretische Physik, Universität zu Köln, D-50937 Cologne, Germany
| | - M O Goerbig
- Laboratoire de Physique des Solides, Univ. Paris-Sud, Université Paris-Saclay, CNRS, UMR 8502, F-91405 Orsay Cedex, France
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22
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Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Lian Y, Ma LL. [Outcome of treatment of Y chromosome AZFc microdeletion patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:607-611. [PMID: 27538137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To discuss the treatment options for patients with azoospermia factor (AZF) c microdeletion on Y chromosome. METHODS One hundred and eighty three patients, who were diagnosed as AZFc microdeletion on Y chromosome in Peking University Third Hospital, were recruited in our study. In order to get better treatment option for this kind of patients, we retrospectively analyzed their clinic data including the treatment process and pregnancy outcome and found out the characteristics of their semen. RESULTS Among the 183 patients, sperms can be found in ejaculated semen in 105 patients (57.4%, 105/183). One hundred and three patients (98.1%, 103/105) were diagnosed as severe or extremely severe oligospermia. Regular medication was given to 98 patients, 6 patients (6.1%, 6/98) of which got natural pregnancy. The other 99 patients who have sperms in their semen received intracytoplasmic sperm injection (ICSI), 68 patients (68.7%, 68/99) of which got pregnancy. Seventy eight patients were diagnosed as azoospermia among all the 183 patients. Forty nine patients received testicular sperm aspiration (TESA), and 21 patients choose to receive micro-TESE directly. Among the 49 patients with TESA, sperms were retrieved in 17 patients (34.7%, 17/49), and sperms were not retrieved in 32 patients (65.3%, 32/49), of which 12 patients (37.5%, 12/32) gave up treatment and 20 patients (62.5%, 20/32) choose micro-TESE. Among the 41 patients who choose to receive micro-TESE, operation has been done on 19 patients, of which 11 patients (57.9%, 11/19) got sperms. Among the 11 patients, TESA has been done on 6 patients before micro-TESE, of which 4 patients (66.6%, 4/6) got sperms. ICSI has already been done on 7 azoospermia AZFc microdeletion patients who underwent micro-TESE, of which 4 patients (57.1%, 4/7) get pregnancy. CONCLUSION AZFc microdeletion patients who had sperms were always diagnosed as severe or extremely severe oligospermia. ICSI was their first choice instead of drug therapy. For AZFc microdeletion patients who were diagnosed as azoospermia, TESA was one of their choices, however, the success rate is not high. Micro-TESE is still possible to get sperms even after the failure of TESA. Therefore, we may choose micro-TESE instead of TESA in some azoospermia patients in order to reduce surgical trauma on patients.
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Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
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Huang J, Lian Y, Zhao N, Liu P, Qiao J. Which is better for robertsonian translocation’s PGD cycles,blastomere fish or trophectoderm array? Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.580] [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: 11/28/2022]
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Abstract
This paper presents a novel electrocardiogram (ECG) processing technique for joint data compression and QRS detection in a wireless wearable sensor. The proposed algorithm is aimed at lowering the average complexity per task by sharing the computational load among multiple essential signal-processing tasks needed for wearable devices. The compression algorithm, which is based on an adaptive linear data prediction scheme, achieves a lossless bit compression ratio of 2.286x. The QRS detection algorithm achieves a sensitivity (Se) of 99.64% and positive prediction (+P) of 99.81% when tested with the MIT/BIH Arrhythmia database. Lower overall complexity and good performance renders the proposed technique suitable for wearable/ambulatory ECG devices.
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Ma K, Lian Y, Zhou S, Hu R, Xiong Y, Ting P, Xiong Y, Li X, Wang X. Microarray analysis of differentially expressed genes in preeclamptic and normal placental tissues. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog16432014] [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: 11/01/2022]
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Ma K, Lian Y, Zhou S, Hu R, Xiong Y, Ting P, Xiong Y, Li X, Wang X. Microarray analysis of differentially expressed genes in preeclamptic and normal placental tissues. CLIN EXP OBSTET GYN 2014; 41:261-271. [PMID: 24992773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE OF INVESTIGATION To detect the candidate genes for preeclampsia (PE). MATERIALS AND METHODS The gene expression profiles in preeclamptic and normal placental tissues were analyzed using cDNA microarray approach and the altered expression of important genes were further confirmed by real-time RT-PCR (reverse transcription polymerase chain reaction) technique. Total RNA was extracted from placental tissues of three cases with severe PE and from three cases with normal pregnancy. After scanning, differentially expressed genes were detected by software. RESULTS In two experiments (the fluorescent labels were exchanged), a total of 111 differentially expressed genes were detected. In placental tissue ofpreeclamptic pregnancy, 68 differentially expressed genes were up-regulated, and 44 differentially expressed genes were down-regulated. Of these genes, 16 highly differentially expressed genes were confirmed by real-time fluorescent quantitative RT-PCR, and the result showed that the ratio of gene expression differences was comparable to that detected by cDNA microarray. CONCLUSION The results of bioinformatic analysis showed that encoding products of differentially expressed genes were correlated to infiltration of placenta trophoblastic cells, immunomodulatory factors, pregnancy-associated plasma protein, signal transduction pathway, and cell adhesion. Further studies on the biological function and regulating mechanism of these genes will provide new clues for better understanding of etiology and pathogenesis of PE.
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Thornhill A, Dibouni ZA, Shah T, Wheat S, Teitelbaum M, Walker M, Bissonette F, Yuzpe AL, Leveille MC, Gysler M, Johnson M, Sprague A, Villena JG, Aparicio JL, Gimenez J, Ten J, Perez RB, Scholten I, Chambers GM, van Loendersloot L, van der Veen F, Repping S, Gianotten J, Hompes PGA, Ledger W, Mol BWJ, Dior UP, Laufer N, Granovsky-Grisaru S, Yagel S, Yaffe H, Gielchinsky Y, Nelen WLDM, Huppelschoten AG, Verkerk EW, Adang EMM, Kremer JAM, Davies M, Rumbold A, Marino J, Willson K, Moore V, Giles L, Shebl O, Ebner T, Tews G, Haas D, Oppelt P, Mayer RB, Sanges F, Maggiulli R, Albricci L, Romano S, Scarica C, Schimberni M, Giallonardo A, Vettraino G, Ubaldi F, Rienzi L, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Obrado EC, Barredo DR, Navarro LL, Rodriguez AV, Rague PNB, Lletget BC, Padro RT, Oron G, Sokal-Arnon T, Zeadna A, Son WY, Holzer H, Tulandi T, Nakamura Y, Hattori H, Sato Y, Kuchiki M, Sakamoto E, Doshida M, Toya M, Kyono K, Nakajo Y, Nakamura Y, Hirata K, Doshida M, Toya M, Kyono K, Xin ZM, Zhu H, Sun YP, Jin HX, Song WY, Rodriguez A, Poisot F, Rodriguez F, Coll O, Vassena R, Vernaeve V, Ye Y, Wang L, Wang N, Le F, Jin F, Zheng Y, Jin F, Lou Y, Le F, Pan PP, Wang N, Wang LY, Hu CX, Liu SY, Zheng YM, Li LJ, Liu XZ, Xu XR, Huang HF, Jin F, Lin SL, Li M, Lian Y, Chen LX, Liu P, Kawwass JF, Crawford S, Kissin DM, Session DR, Boulet S, Jamieson DJ. Quality and safety of ART therapies. Hum Reprod 2013. [DOI: 10.1093/humrep/det219] [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: 11/13/2022] Open
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Danielson ME, Beck TJ, Karlamangla AS, Greendale GA, Atkinson EJ, Lian Y, Khaled AS, Keaveny TM, Kopperdahl D, Ruppert K, Greenspan S, Vuga M, Cauley JA. A comparison of DXA and CT based methods for estimating the strength of the femoral neck in post-menopausal women. Osteoporos Int 2013; 24:1379-88. [PMID: 22810918 PMCID: PMC3606278 DOI: 10.1007/s00198-012-2066-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 06/06/2012] [Indexed: 01/10/2023]
Abstract
UNLABELLED The study goal was to compare simple two-dimensional (2D) analyses of bone strength using dual energy x-ray absorptiometry (DXA) data to more sophisticated three-dimensional (3D) finite element analyses using quantitative computed tomography (QCT) data. DXA- and QCT-derived femoral neck geometry, simple strength indices, and strength estimates were well correlated. INTRODUCTION Simple 2D analyses of bone strength can be done with DXA data and applied to large data sets. We compared 2D analyses to 3D finite element analyses (FEA) based on QCT data. METHODS Two hundred thirteen women participating in the Study of Women's Health Across the Nation (SWAN) received hip DXA and QCT scans. DXA BMD and femoral neck diameter and axis length were used to estimate geometry for composite bending (BSI) and compressive strength (CSI) indices. These and comparable indices computed by Hip Structure Analysis (HSA) on the same DXA data were compared to indices using QCT geometry. Simple 2D engineering simulations of a fall impacting on the greater trochanter were generated using HSA and QCT femoral neck geometry; these estimates were benchmarked to a 3D FEA of fall impact. RESULTS DXA-derived CSI and BSI computed from BMD and by HSA correlated well with each other (R=0.92 and 0.70) and with QCT-derived indices (R=0.83-0.85 and 0.65-0.72). The 2D strength estimate using HSA geometry correlated well with that from QCT (R=0.76) and with the 3D FEA estimate (R=0.56). CONCLUSIONS Femoral neck geometry computed by HSA from DXA data corresponds well enough to that from QCT for an analysis of load stress in the larger SWAN data set. Geometry derived from BMD data performed nearly as well. Proximal femur breaking strength estimated from 2D DXA data is not as well correlated with that derived by a 3D FEA using QCT data.
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Affiliation(s)
- M E Danielson
- Department of Epidemiology, University of Pittsburgh, 130 DeSoto St., Pittsburgh, PA 15261, USA.
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Wang Y, Deepu CJ, Lian Y. A computationally efficient QRS detection algorithm for wearable ECG sensors. Annu Int Conf IEEE Eng Med Biol Soc 2012; 2011:5641-4. [PMID: 22255619 DOI: 10.1109/iembs.2011.6091365] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In this paper we present a novel Dual-Slope QRS detection algorithm with low computational complexity, suitable for wearable ECG devices. The Dual-Slope algorithm calculates the slopes on both sides of a peak in the ECG signal; And based on these slopes, three criterions are developed for simultaneously checking 1)Steepness 2)Shape and 3)Height of the signal, to locate the QRS complex. The algorithm, evaluated against MIT/BIH Arrhythmia Database, achieves a very high detection rate of 99.45%, a sensitivity of 99.82% and a positive prediction of 99.63%.
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Affiliation(s)
- Y Wang
- National University of Singapore. yichao@ nus.edu.sg
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Yu Y, Yan J, Li M, Yan L, Zhao Y, Lian Y, Li R, Liu P, Qiao J. Effects of combined epidermal growth factor, brain-derived neurotrophic factor and insulin-like growth factor-1 on human oocyte maturation and early fertilized and cloned embryo development. Hum Reprod 2012; 27:2146-59. [DOI: 10.1093/humrep/des099] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Deng J, Lian Y, Shen C, Chen Y, Zhang M, Wang YJ, Zhou HD. Adverse life event and risk of cognitive impairment: a 5-year prospective longitudinal study in Chongqing, China. Eur J Neurol 2011; 19:631-7. [DOI: 10.1111/j.1468-1331.2011.03599.x] [Citation(s) in RCA: 7] [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] [Indexed: 11/29/2022]
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Lian Y, Wang Y, Li H, Wu Y. e0615 The relationship between left ventricular diastolic function and arterial stiffness in coronary heart disease patients with diabetes. Heart 2010. [DOI: 10.1136/hrt.2010.208967.615] [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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Li QZ, Zhou J, Lian Y, Zhang B, Branch VK, Carr-Johnson F, Karp DR, Mohan C, Wakeland EK, Olsen NJ. Interferon signature gene expression is correlated with autoantibody profiles in patients with incomplete lupus syndromes. Clin Exp Immunol 2009; 159:281-91. [PMID: 19968664 DOI: 10.1111/j.1365-2249.2009.04057.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Interferon (IFN) signature genes have been shown to be expressed highly in peripheral blood of patients with systemic lupus erythematosus (SLE), especially in the presence of active disease. However, the expression of this gene signature in individuals with incomplete forms of lupus and the pathogenic relationship between IFN signature genes and autoantibody production have not been explored fully. In the present study, we examined the gene expression and autoantibody profiles of patients diagnosed with incomplete lupus erythematosus (ILE) to determine correlations of the gene expression signature with autoantibody production. Gene expression analysis was carried out on the 24K Illumina Human Refseq-8 arrays using blood samples from 84 subjects, including patients with SLE (n = 27) or ILE (n = 24), first-degree relatives (FDR) of these patients (n = 22) and non-autoimmune control (NC) individuals (n = 11). Autoantibody expression was measured using standard immunoassays and autoantigen proteomic arrays. Up-regulation of a set of 63 IFN signature genes was seen in 83% of SLE patients and 50% of ILE patients. High levels of IFN gene expression in ILE and SLE showed significant correlations with the expression of a subset of IgG autoantibodies, including chromatin, dsDNA, dsRNA, U1snRNP, Ro/SSA, La/SSB, topoisomerase I and Scl 70, while low IFN levels were correlated with immunoglobulin (Ig)M autoreactivity. These studies suggest that in patients with ILE the IFN gene expression signature may identify a subset of these individuals who are at risk for disease progression. Furthermore, high levels of alpha IFN may promote autoantibody class-switch from IgM to the more pathogenic IgG class.
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Affiliation(s)
- Q-Z Li
- Department of Immunology and Division of Rheumatic Diseases, University of Texas Southwestern Medical Center, Dallas, TX 75390-8884, USA.
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Huang J, Chen Y, Lian Y, Qiao J, Gao X, Liu P. Does meiotic segregation behavior of spermatozoa predict the embryos karyotypes in male robertsonian translocations? Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.1434] [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: 11/28/2022]
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Abstract
INTRODUCTION Bone xenografts from pig to human appear to be an alternative to resolve the shortage of bone autologous and allografts. However, the major obstacle of pig-to-human xenotransplantation is the interaction between human natural anti-Gal antibody and the alpha-Gal epitope abundantly expressed on pig endothelium. It was important to investigate the expression of alpha-Gal epitopes in porcine bone tissue to look for an ideal method to remove the alpha-Gal epitopes. METHODS The cortical and trabecular bone were retrieved from five pigs. After the soft tissues and periosteum were removed, the blood and marrow cavity were cleaned with phosphate-buffered solution. All 5 mm x 5 mm x 5 mm samples were imbedded in paraffin and methyl methacrylate resin for histological sections. The mouse IgM M86 monoclonal antibody, which was highly specific for alpha-Gal epitopes, was used to document alpha-Gal epitope expression by immunostaining of tissues and immunofluorescence. RESULTS Gal-positive immunostaining and immunofluorescence were observed on the surface of osteocytes and Haversian canals. There was a significant difference in Gal expression between cortical and trabecular bone tissues. There was no Gal expression in the extracellular matrix of bone. CONCLUSIONS Major alpha-Gal epitopes were on the surface of osteocytes of porcine bone tissues. A method should be used to damage the osteocytes and eliminate the alpha-Gal epitopes to avoid the xenogenic rejection in xenotransplantation of porcine bone tissues.
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Affiliation(s)
- W Feng
- Orthopaedic Department, West China Hospital, Sichuan University, Guoxuexiang 37, Chengdu 610041, P.R. China
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Tai F, Broders H, Lian Y, Wang T, Sun R. Cellular activation patterns of the main olfactory bulb and accessory olfactory bulb following exposure to beddings soiled by same- or opposite-sex conspecifics in Mandarin voles (Microtus mandarinus). CAN J ZOOL 2006. [DOI: 10.1139/z06-104] [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: 11/22/2022]
Abstract
Using induction of Fos as an index, we studied cellular activation patterns in the accessory olfactory bulb (AOB) and main olfactory bulb (MOB) of Mandarin voles ( Microtus mandarinus (Milne-Edwards, 1871)) following their exposure to beddings soiled by different sexes. Male and female Mandarin voles that were exposed to beddings soiled by the opposite sex produced significantly more Fos-immunoreactive (Fos-ir) neurons in the anterior portion of the AOB and significantly fewer Fos-ir neurons in the posterior portion of the AOB than voles exposed to beddings soiled by the same sex. Furthermore, male and female Mandarin voles exposed to bedding soiled by different sex produced different numbers of Fos-ir cells in MOB. Mandarin voles exposed to beddings soiled by the opposite sex produced significantly more Fos-ir neurons in MOB than voles exposed to beddings soiled by the same sex. Our results establish that Mandarin voles of each sex showed different cellular activation patterns in AOB and MOB following exposures to sex-specific beddings. We suggest that both AOB and MOB were involved in sexual activities induced by chemosensory signals.
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Affiliation(s)
- F.D. Tai
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - H.G. Broders
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - Y. Lian
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - T.Z. Wang
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - R.Y. Sun
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
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Abstract
The authors followed 5,437 people aged 55 years and older with normal baseline Mini-Mental State Examination score annually for 5 years. The mean incidence of cognitive impairment was 2.3% per year. Cognitive activities in both the individual item (playing board games and reading) and the composite measure were associated with the reduced risk of cognitive impairment, while watching television was associated with an increased risk of cognitive impairment.
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Affiliation(s)
- J Y J Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
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Abstract
BACKGROUND Vitrification is assumed to be a promising method to cryopreserve human oocytes but still needs optimization. In this study, rabbit oocytes (fertilized by ICSI) were vitrified with cryoloops, and the effect of three different cryopreservation protocols on spindle configuration and embryo quality was assessed. METHODS Metaphase II rabbit oocytes were randomly assigned to one of four groups: (i) control; (ii) E40 [40% ethylene glycol (EG)]; (iii) ED20 [20% EG + 20% dimethylsulphoxide (DMSO)]; and (iv) ED20 + M (20% EG + 20% DMSO + vitrification machine). After warming, one part of each group was fertilized by ICSI to examine the fertilization and embryo cleavage ability, and the others were immunostained for tubulin and chromatin before visualization using confocal microscopy. RESULTS The survival rates after warming were 79.1, 83.1 and 82.3%, respectively. In protocols E40 and ED20, the spindles were severely injured and the embryo quality not good compared with those in the ED20 + M group. CONCLUSIONS The fastest cooling rate in combination with EG and DMSO as cryoprotectants had the fewest adverse effects on the spindle configuration of rabbit oocytes and embryo development.
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Affiliation(s)
- X Y Cai
- Department of Obstetrics and Gynaecology, Third Hospital, Peking University, Peking, China 100083
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Zheng D, Fong J, Shao Z, Lian Y, Wu C. Thermal oxide based silica ridge waveguide. Opt Express 2004; 12:1753-1758. [PMID: 19475002 DOI: 10.1364/opex.12.001753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A silica planar waveguide structure, where a ridge waveguide resides on a vacuum gap, was invented. The silica layer, which was fabricated through thermal oxidation at 1150 masculineC, had an excellent optical index uniformity on the order of 3x10(-5) @1550 nm, and a thickness uniformity of 10 nm at a thickness of 10 microm. Straight waveguide with low insertion loss was demonstrated. Improved thermal efficiency of this structure to cause phase change was discussed in comparison to the conventional channel waveguide structure. Finally, the limitation of this technology to make complex device structures was also explored.
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Okazaki T, Suenaga K, Lian Y, Gu Z, Shinohara H. Intrafullerene electron transfers in Sm-containing metallofullerenes: Sm@C2n (74 < or = 2n < or = 84). J Mol Graph Model 2001; 19:244-51. [PMID: 11391876 DOI: 10.1016/s1093-3263(00)00093-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The electronic properties of Sm-containing metallofullerenes, Sm@C74, Sm@C76 (I, II), Sm@C78, Sm@C80, Sm@C82 (I, II, III) and Sm@C84 (I, II, III), are characterized by UV-Vis-NIR absorption spectroscopy and electron energy-loss spectroscopy (EELS). The UV-Vis-NIR absorption spectra of Sm@C74, Sm@C80, Sm@C82 (I, II, III) and Sm@C84 (I, II) are quite similar to those of the corresponding Ca, Sr, Ba, Eu, Tm, Yb-based metallofullerenes. In contrast, the absorption spectra of Sm@C76 (I, II), Sm@C78 and Sm@C84(III) show a novel feature: the onset for Sm@C78 is observed approximately 2600 nm, which corresponds to a small band gap (approximately 0.5 eV). Furthermore, the oxidation states of Sm atom in the various fullerene cages are investigated by EELS, which reveals that the Sm atom takes +2 oxidation state in the fullerene cages. A probable rationale for the tendency to have the Sm2+ state is presented based on a simple thermochemical cycle model.
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Affiliation(s)
- T Okazaki
- Department of Chemistry, Nagoya University, Nagoya, Japan
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Abstract
The present study was designed to evaluate the feasibility of germinal vesicle (GV) transfer in rabbits and mice. The GV oocytes were collected from ovaries and cultured in 20 microg/mL 3-isobutyl-1-methylxanthin (IBMX) in TCM199 medium, which caused oocytes to shrink, enlarging the perivitelline space to facilitate the GV removal and transfer. Pairs of GV-cytoplast complexes were fused with electric pulses, and the fused, reconstructed oocytes were cultured in TCM199 for 24 h. Results are as follows: 1) The exposure time of rabbit GV oocytes to IBMX medium affected the success of GV removal. For oocytes cultured for 2 and 3 h in IBMX medium, removed rates were 56% and 44, respectively, significantly higher (P < 0.05) than removal rates of GV oocytes cultured for 1 and 4 h (27% and 27%, respectively); 2) There was no significant difference (P > 0.1) in fusion and maturation rates of rabbit reconstructed oocytes collected at 72 and 84 h after initiation of FSH injection to donors; 3) eCG in the maturation media improved development of rabbit-to-rabbit GV transferred oocytes but had no positive effect on mouse-to-rabbit GV transferred oocytes; 4) When mouse GV-karyoplasts were injected into enucleated rabbit oocytes, fusion rates of GV-karyoplasts measuring 40- to 50-microm and 80- to 90-microm in diameters obtained were 84% and 93%, respectively. The rates were significantly higher (P < 0.05) than fusion rates after transferring GV-karyoplasts measuring 30- to 35-microm in diameter (63%). The maturation rate (89%) of reconstructed oocytes composed of 80- to 90-microm mouse GV-karyoplasts and rabbit GV-enucleated cytoplasts was higher than that seen for oocytes composed of 40- to 50-microm (77%, P<0.05) or 30- to 35-microm (59%, P<0.01) mouse karyoplasts. Thirty-five of the 63 (56%) mature mouse-to-rabbit reconstructed oocytes had the normal complement of 20 chromosomes.
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Affiliation(s)
- G P Li
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing
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Barnett SW, Lu S, Srivastava I, Cherpelis S, Gettie A, Blanchard J, Wang S, Mboudjeka I, Leung L, Lian Y, Fong A, Buckner C, Ly A, Hilt S, Ulmer J, Wild CT, Mascola JR, Stamatatos L. The ability of an oligomeric human immunodeficiency virus type 1 (HIV-1) envelope antigen to elicit neutralizing antibodies against primary HIV-1 isolates is improved following partial deletion of the second hypervariable region. J Virol 2001; 75:5526-40. [PMID: 11356960 PMCID: PMC114265 DOI: 10.1128/jvi.75.12.5526-5540.2001] [Citation(s) in RCA: 188] [Impact Index Per Article: 8.2] [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: 11/20/2022] Open
Abstract
Partial deletion of the second hypervariable region from the envelope of the primary-like SF162 virus increases the exposure of certain neutralization epitopes and renders the virus, SF162DeltaV2, highly susceptible to neutralization by clade B and non-clade B human immunodeficiency virus (HIV-positive) sera (L. Stamatatos and C. Cheng-Mayer, J. Virol. 78:7840-7845, 1998). This observation led us to propose that the modified, SF162DeltaV2-derived envelope may elicit higher titers of cross-reactive neutralizing antibodies than the unmodified SF162-derived envelope. To test this hypothesis, we immunized rabbits and rhesus macaques with the gp140 form of these two envelopes. In rabbits, both immunogens elicited similar titers of binding antibodies but the modified immunogen was more effective in eliciting neutralizing antibodies, not only against the SF162DeltaV2 and SF162 viruses but also against several heterologous primary HIV type 1 (HIV-1) isolates. In rhesus macaques both immunogens elicited potent binding antibodies, but again the modified immunogen was more effective in eliciting the generation of neutralizing antibodies against the SF162DeltaV2 and SF162 viruses. Antibodies capable of neutralizing several, but not all, heterologous primary HIV-1 isolates tested were elicited only in macaques immunized with the modified immunogen. The efficiency of neutralization of these heterologous isolates was lower than that recorded against the SF162 isolate. Our results strongly suggest that although soluble oligomeric envelope subunit vaccines may elicit neutralizing antibody responses against heterologous primary HIV-1 isolates, these responses will not be broad and potent unless specific modifications are introduced to increase the exposure of conserved neutralization epitopes.
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Affiliation(s)
- S W Barnett
- Chiron Corporation, Emeryville, California 94608-2916, USA
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Lian Y, Tan J, Deng Z. [Experimental study of shuangcao granule no. 1 on duck hepatitis B virus in ducklings]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2000; 20:530-2. [PMID: 11789214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
OBJECTIVE To study the in vivo anti-viral effect of a Chinese drug, composite Shuangcao Anti-Jaundice Granule No. 1(SCG-1), on duck hepatitis B virus (DHBV). METHODS Guangzhou brown spot ducklings infected with DHBV were used as the hepatitis B animal model, for which, 1-day old ducklings were infected with DHBV. Positive DHBV-DNA in ducklings sera were detected 13 days after the infection, and then SCG-1 was given for 14 days and DHBV-DNA was detected by dot-blot hybridization test. RESULTS After medicated with SCG-1 [10 g/(kg.day) and 5 g/(kg.day)] 7 days and 14 days, optic density value (OD value) of DHBV-DNA in ducklings' sera were obviously lower than that before treatment, there was significant difference. But rebound phenomenon appeared in both groups 3 days after stopping medication (P < 0.05). CONCLUSION SCG-1 could inhibit the replication of DHBV-DNA in Guangzhou ducklings.
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Affiliation(s)
- Y Lian
- Guangzhou Municipal Eighth People's Hospital, Institute of Infectious Diseases, Guangzhou (510060)
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Lian Y, Deng Z, Li Y, Lei C, Tang X. Measurement and significance of oblique occipital frontal diameter and superior inferior diameter of hepatic left lobulus in patients with hepatic fibrosis. Zhonghua Gan Zang Bing Za Zhi 2000; 8:156-7. [PMID: 10880164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
OBJECTIVE To study the changes and significance of oblique occipital frontal diameter (OFD) and superior inferior diameter (SID) of the hepatic left lobulus in different stages of hepatic fibrosis, and to evaluate the value of corresponding serological examination in the non-invasive diagnosis to hepatic fibrosis and cirrhosis. METHODS Seventy-two patients with chronic hepatitis were confirmed by biopsy. OFD and SID of the hepatic left lobulus were measured by type B ultrasonic flaw detector. Serum levels of hyaluronic acid (HA), laminin (LN), type IV collagen (CIV) and type III procollagen (PCIII) were measured by radioimmunoassay. RESULTS SID of the hepatic left lobulus in S(4) stage was 5.7cmA1.5cm, significantly shorter than the values of 7.7cmA1.4 cm in S(0) stage. OFD of the hepatic left lobulus was longer in S(4) stage than S(0) stage, but the difference didn't reach statistical significance. Serum levels of HA, LN,CIV, and PCIII elevated as the increase of fibrosis. HA and PCIII increased to 273.4mug/LA131.3mug/L and 167. 4mug/LA48.1mug/L in S3 stage from 66.2mug/LA35.0mug/L and 103. 4mug/LA23.8mug/L in S(0) stage. CONCLUSION Changes in of SID and OFD of the hepatic left lobulus and serum levels of HA and PCIII may indicate indirectly mid-late hepatic fibrosis or early cirrhosis.
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Affiliation(s)
- Y Lian
- Institute of Infectious Diseases, Guangzhou 8th People's Hospital, Guangzhou 510060, China
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Lian Y, Wu W, Shi Y. [Preliminary study on relationship between different viral pathogenesis and disease prognosis in patients with severe viral hepatitis]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1999; 13:355-7. [PMID: 12759976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
OBJECTIVE To study the relationship between different viral pathogenesis and disease prognosis in severe viral hepatitis. METHODS Different viral pathogenesis of 87 dead and live cases with severe viral hepatitis were compared. RESULTS Total mortality of 87 patients with severe hepatitis was 74.71% (65/87), total prevalence of HBV infection alone in these patients was 41.38% (36/87). The detection rates of HBV infection alone and superinfection of different hepatitis viruses in 68 patients with chronic severe hepatitis (CSH) were 41.18% (28/68) and 58.82% (40/68) respectively. The prevalences of superinfection of HBV and HEV or HAV and superinfection of HBV and CMV in patients with CSH were 27.94% (19/68) and 10.29 (7/68) respectively. The mortality of superinfection of HBV and CMV (85.71%) was the highest, followed by HBV infection alone (77.78%). In addition, the prevalence and mortality of HBV infection alone in 19 patients with acute or subacute severe hepatitis was the highest. CONCLUSION HBV, HEV or HAV infection alone was the main viral pathogenesis of severe hepatitis. Superinfection of different viruses in patients with CSH was the most common viral infection type. An unpromising prognosis of superinfection of HBV and CMV in CSH is noted.
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Affiliation(s)
- Y Lian
- Institute of Infectious Diseases, Guangzhou 8th People's Hospital, Guangzhou 510060
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Abstract
The catalytic center of the RNA from the negative strand of the satellite RNA of chicory yellow mottle virus type 1 (sCYMV1) is in the hairpin ribozyme family, has catalytic activity, and cleaves substrates before a preferred GUA sequence. This is different from that of the satellite RNA from the negative strand of tobacco ringspot virus (sTRSV) which prefers a GUC sequence at the site of cleavage. The sCYMV1 hairpin ribozyme has now been developed for cleaving heterologous RNA substrates. When helix 1 was extended from the native 5 bp to 6 bp with a newly added A:U base pair, catalytic activity increased three-fold. The preferred sequence for the substrate loop was the native A*GUA sequence where * is the site of cleavage. When each nucleotide in this sequence was changed to each of the other three nucleotides, catalytic activity decreased 66-100%. RNA targets, containing this A*GUA sequence, were located in both human papillomavirus and HIV-1. Ribozymes were developed which efficiently cleaved these targets in vitro. These results identify a new class of hairpin ribozymes capable of cleaving substrates before a preferred GUA sequence rather than the GUC preferred by the sTRSV hairpin ribozyme. This expands the repertoire of target sites available for gene therapy using the hairpin ribozyme.
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Affiliation(s)
- Y Lian
- Department of Biological Sciences, Northern Illinois University, DeKalb, IL 60115, USA
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Su Z, Zeng Y, Zhou H, Wai J, Lian Y, Lu X, Liu L. [Preliminary study on chemical changes in the decocting process of radix et rhizoma Rhei]. Zhongguo Zhong Yao Za Zhi 1999; 24:291-2, 318. [PMID: 12205885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To understand the chemical changes in the decocting process of Radix et Rhizoma Rhei. METHOD Comparing the contents of many kinds of anthraquinones in the crude drug, decoction and drug sediments of Radix et Rhizoma Rhei by HPLC. RESULT The contents of combined and free anthraquinones changed after the crude drug was decocted. CONCLUSION These changes may be related to the hydrolysis of combined anthraquinones, the decomposition of free anthraquinones, and the inter-transition among anthraquinones.
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Affiliation(s)
- Z Su
- Guangzhou University of Traditional Chinese Medicine, Guangzhou 510407
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Yuan H, Zhang J, Feng X, Lian Y. Observation on electromyogram changes in 93 cases of peripheral facial paralysis treated by point-through-point acupuncture. J TRADIT CHIN MED 1997; 17:275-7. [PMID: 10437210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Bioelectricity of the affected muscles at acute stage, recovery stage and sequel state in 93 cases of peripheral facial paralysis was observed with EMG. Pathological potential or motor potential was found to be reduced to varying degrees in all the affected muscles. After treatment by point-through-point acupuncture, myodynamia recovered fairly rapidly, EMG showed obvious changes, pathological potential decreased, and the normal motor unit potential increased remarkably. Comparative analysis of EMG before and after acupuncture indicated that point-through-point acupuncture had an obvious therapeutic effect on the disease. It was also very significant that EMG was used in diagnosing various stages of peripheral facial paralysis, evaluation of prognosis and guidance in clinical treatment.
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Affiliation(s)
- H Yuan
- First Affiliated Hospital, Tianjin College of Traditional Chinese Medicine
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Huang X, Lian Y, Wang Q. [Experimental in vivo passage of H2 strain of live attenuated vaccine of hepatitis A in common marmosets]. Zhonghua Yu Fang Yi Xue Za Zhi 1997; 31:260-2. [PMID: 9812599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Common marmosets with negative serum antibodies against hepatitis A virus (anti-HAV) and normal liver functions were used for the tests of passage of H2 vaccine strain of HAV to explore its residual virulence after attenuation and possibility of its reversion. Common marmosets were inoculated with attenuated live vaccine, and fecal suspension and/or proliferative liquid in tissue culture of the progeny of vaccine HAV excreted from their feces were passaged in common marmosets. Result of three serial passages in vivo indicated that there was no significant difference in serum anti-HAV titer, and no or low-level changes in activities of liver enzymes, no pathological changes in liver tissues observed, and detectable but minimal HAV was shed in stool of the all animals.
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Affiliation(s)
- X Huang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming
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