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Zeng B, Jin Y, Su X, Qiu S. The association between sarcopenia and stress incontinence among older adults in India: A study based on longitudinal aging study in India. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00817-5] [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: 02/12/2023]
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Zeng B, Chen ML, Yu LY, Yang H. [Research progress in IgG4-related pharyngolaryngeal disease]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:80-84. [PMID: 36603873 DOI: 10.3760/cma.j.cn115330-20220523-00296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- B Zeng
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M L Chen
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - L Y Yu
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H Yang
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Daignault-Mill S, Moi D, Ju R, Zeng B, Gabrielli B, Spoerri L, Dolcetti R, Haass N. 642 Repurposing bortezomib for improved treatment of melanoma by exploiting immunogenic cell death. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ma X, Zeng B, Zheng L, Lin J, Wang J, Chen X. Effects of Cluster of Differentiation 147 Expression Down-Regulation on Proliferation Migration and Invasion of Cervical Cancer Cells. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.963] [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: 11/22/2022] Open
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Zeng B, Liao B, Zhou D, Bai Y, Chen H, Chen B, Zhu Z. [Inhibitory effect of Xinhui citrus fermentation liquor on liver fibrosis in mice]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:588-592. [PMID: 33963720 DOI: 10.12122/j.issn.1673-4254.2021.04.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the inhibitory effect of Xinhui citrus fermentation liquor on liver fibrosis in mice. OBJECTIVE Mouse models of liver fibrosis were established by intraperitoneal injection of CCl4 in 105 male C57BL/6 mice, followed by gavage of 0.1 mL 40% CCl4 olive oil 3 times a week (model group, n=49) or daily gavage of citrus liquor at the dose of 0.26 mL (citrus liquor group, n=56) for 8 weeks. Seven mice receiving only olive oil treatment (0.1 mL, 3 times a week) and another 7 treated with citrus liquor served as the control group. Liver tissues and serum samples were collected from 7 mice in the citrus liquor group and model group each week and from the mice in the two control groups at the 8th week for pathological examination of the liver tissues using HE staining and Sirius red staining and for determination of the biochemical indexes of liver function. OBJECTIVE The mice in the model group showed progressively worsened liver fibrosis with obvious hepatic steatosis, necrosis and inflammatory cell infiltration. These liver pathologies were much ameliorated in citrus liquor group, which showed significantly reduced vacuolation, inflammatory cell infiltration, collagen deposition and the Ishak score of the liver tissue (P < 0.05). Serum levels of cholyglycine, alanine aminotransferase, transglutaminase and alanine aminotransferase were all significantly lower in citrus liquor group than in the model group (P < 0.05). OBJECTIVE Xinhui citrus fermentation liquor has protective effect on the liver and can significantly ameliorate liver fibrosis in mice.
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Affiliation(s)
- B Zeng
- Clinical Research Center, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510315, China
| | - B Liao
- Clinical Research Center, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510315, China
| | - D Zhou
- Department of Clinical Laboratory, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510315, China
| | - Y Bai
- Department of Clinical Laboratory, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510315, China
| | - H Chen
- Department of Clinical Laboratory, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510315, China
| | - B Chen
- Guangdong Xinbaotang Biological Technology Co, Ltd., Jiangmen 529100, China
| | - Z Zhu
- Clinical Research Center, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510315, China
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Gu Y, Zeng B, Sherma J. Development of quantitative HPTLC methods for dolutegravir, lamivudine, and tenofovir disproxil fumarate in a combination pharmaceutical product using a model process published earlier for transfer of minilab TLC screening methods to HPTLC-densitometry. ACTA CHROMATOGR 2020. [DOI: 10.1556/1326.2019.00689] [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] [Indexed: 11/19/2022]
Abstract
High-performance thin-layer chromatography (HPLTC)–densitometry methods are described for the analysis of the anti(retro)virals dolutegravir (D), lamivudine (L), and tenofovir disoproxil fumarate (TDF) in a pharmaceutical tablet product. To the best of our knowledge, no previous quantitative planar chromatography method has been reported in the literature for this combination formulation. The method for L was transferred from a thin-layer chromatography (TLC) screening method published in the Global Pharma Health Fund (GPHF) Minilab Manual designed for identification of counterfeit and substandard drug products using a model process published earlier. D and TDF are not included in the list of drugs for which TLC screening methods are published for the Minilab, but HPTLC–densitometry procedures were developed for them using the transfer process guidelines. L was analyzed simultaneously with TDF on Merck Premium Purity silica gel 60 F plates using the mobile phase ethyl acetate–methanol–acetone–concentrated ammonium hydroxide (30:7:3:1) and densitometric scanning at 254 nm. D was analyzed on a second plate by scanning at 366 nm after chromatography with the chloroform–methanol–formic acid (32:8:2) mobile phase. Data for all three drugs are shown to meet the requirements of the model transfer process for calibration curve r values, assay of tablets relative to their label values, peak purity/peak identity tests, and validation by standard addition analysis of samples spiked at 50%, 100%, and 150% of the label value of active ingredients. A TLC screening method for TDF in the combination product was developed and published online with open access.
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Affiliation(s)
- Y. Gu
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | - B. Zeng
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | - J. Sherma
- Department of Chemistry, Lafayette College, Easton, PA, USA
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Wang C, Wang H, Peng Y, Zeng B, Zhang Y, Tang X, Mi L, Pan Y, Yang Z. CTNNBIP1 modulates keratinocyte proliferation through promoting the transcription of β‐catenin/TCF complex downstream genes. J Eur Acad Dermatol Venereol 2020; 35:368-379. [PMID: 32531088 DOI: 10.1111/jdv.16725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 04/30/2020] [Indexed: 01/12/2023]
Affiliation(s)
- C. Wang
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - H. Wang
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - Y. Peng
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - B. Zeng
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - Y. Zhang
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - X. Tang
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - L. Mi
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - Y. Pan
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
| | - Z. Yang
- Department of Dermatology The Second Affiliated Hospital, The Domestic First‐class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine Changsha Hunan China
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Wang K, Pang L, Tao Y, Li X, Zhang J, Cui T, Zeng B, Lin H. Association of genetic and environmental factors with dental caries among adolescents in south China: A cross-sectional study. Eur J Paediatr Dent 2020; 21:129-136. [PMID: 32567944 DOI: 10.23804/ejpd.2020.21.02.07] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM The objective of this study was to investigative genetic and environmental factors that contribute to caries susceptibility among adolescents in south China. MATERIALS AND METHODS A cross-sectional study was conducted among 1055 adolescents aged 13-14 years old in south China. The International Caries Detection and Assessment System (ICDAS) was used to identify caries. Environmental variables were analysed by regression models. Twenty-three single nucleotide polymorphisms (SNPs) in 14 genes were identified from saliva samples. Regression analysis was used for the evaluation of effects of SNP markers using the minor allele as the effect allele. RESULTS Our results suggest that gender, Cariostat score and Plaque Index were associated with dental caries. After the adjustment by age and gender, the G allele in AMBN (rs13115627) nominally was a protective factor for caries under additive model (P=0.028; OR=0.782; 95% CI, 0.627-0.974). However, the association did not meet the Bonferroni correction significance cut-off for multiple testing. CONCLUSION Gender, Cariostat score and Plaque Index were associated with dental caries in this population. No selected SNPs showed a significant association with dental caries under either additive model or dominance model.
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Affiliation(s)
- K Wang
- Department of Preventive Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China
| | - L Pang
- Department of Preventive Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China
| | - Y Tao
- Department of Preventive Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China
| | - X Li
- Foshan Stomatology Hospital, Foshan, School of Stomatology and Medicine, Foshan University, Foshan, PR China
| | - J Zhang
- Foshan Stomatology Hospital, Foshan, School of Stomatology and Medicine, Foshan University, Foshan, PR China
| | - T Cui
- Foshan Stomatology Hospital, Foshan, School of Stomatology and Medicine, Foshan University, Foshan, PR China
| | - B Zeng
- Department of Preventive Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China
| | - H Lin
- Department of Preventive Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, PR China
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Zeng B, Yang L, Liang YJ, Lao XM, Mei XY, Liao GQ. Diagnostic value of intraoperative bone marrow assessment for bone margins in patients with head and neck squamous cell carcinoma: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2020; 49:1128-1134. [PMID: 32151508 DOI: 10.1016/j.ijom.2019.11.014] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 11/07/2019] [Accepted: 11/11/2019] [Indexed: 11/28/2022]
Abstract
A clear bone margin is essential for complete resection of the bone-involved tumour, but the evaluation of hard tissue takes time and is impractical intraoperatively. Bone marrow assessment remains controversial. The aim of this study was to investigate the diagnostic value of intraoperative bone marrow assessment for bone margins. PubMed and Web of Science were searched for studies published between 1990 and 2017. A systematic review was conducted. After quality assessment, 10 articles with 11 cohorts and 404 patients were identified. Sensitivity, specificity, and other measures were pooled for meta-analysis; the estimates for intraoperative bone marrow assessment were as follows: sensitivity 0.82 (95% confidence interval (CI) 0.62-0.93), specificity 0.99 (95% CI 0.96-1.00), positive likelihood ratio 109.79 (95% CI 22.99-524.34), negative likelihood ratio 0.18 (95% CI 0.08-0.42), and diagnostic odds ratio 241.82 (95% CI 90.33-647.38). Furthermore, sensitivity and specificity at the summary operating point of the summary receiver operating characteristic curve were 0.82 and 0.99, respectively, and the area under the curve was 0.99. Intraoperative bone marrow assessment was investigated by meta-analysis and shown to have a high level of overall accuracy for the diagnosis of bone margins.
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Affiliation(s)
- B Zeng
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, 56th Lingyuanxi Road, Guangzhou, Guangdong, 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No.74, 2nd Zhongshan Road, Guangzhou, 510080, Guangdong, China
| | - L Yang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, 56th Lingyuanxi Road, Guangzhou, Guangdong, 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No.74, 2nd Zhongshan Road, Guangzhou, 510080, Guangdong, China
| | - Y-J Liang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, 56th Lingyuanxi Road, Guangzhou, Guangdong, 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No.74, 2nd Zhongshan Road, Guangzhou, 510080, Guangdong, China
| | - X-M Lao
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, 56th Lingyuanxi Road, Guangzhou, Guangdong, 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No.74, 2nd Zhongshan Road, Guangzhou, 510080, Guangdong, China
| | - X-Y Mei
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, 56th Lingyuanxi Road, Guangzhou, Guangdong, 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No.74, 2nd Zhongshan Road, Guangzhou, 510080, Guangdong, China
| | - G-Q Liao
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, 56th Lingyuanxi Road, Guangzhou, Guangdong, 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No.74, 2nd Zhongshan Road, Guangzhou, 510080, Guangdong, China.
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Zeng B, Zhao G, Liu HL. The Differential Effect of Treadmill Exercise Intensity on Hippocampal Soluble Aβ and Lipid Metabolism in APP/PS1 Mice. Neuroscience 2020; 430:73-81. [PMID: 31954827 DOI: 10.1016/j.neuroscience.2020.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 08/19/2019] [Revised: 01/02/2020] [Accepted: 01/06/2020] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) is characterized clinically by progressive impairments in learning and memory. Accumulating evidence suggests that regular exercise plays a neuroprotective role in aging-associated memory loss. Our previous study has confirmed that long-term treadmill exercise initiated either before or during the onset of β-amyloid (Aβ) pathology, was beneficial for reducing the levels of soluble Aβ and further improved cognition. In this study, in APP/PS1 mice, we assessed changes in soluble Aβ, and various blood biochemistry and molecular biological indices to assess whether exercise modulated lipid metabolism and thereby decelerated AD progression. Our results show that long-term treadmill exercise reduced the total cholesterol, triglyceride, and low-density lipoprotein cholesterol levels, and increased the level of high-density lipoprotein cholesterol. Exercise also decreased the levels of soluble Aβ1-40 and Aβ1-42, down-regulated retinoid X receptor expression, and up-regulated liver X receptor, Apolipoprotein E, Low density lipoprotein receptor, Low density lipoprotein receptor-related protein 1, and ATP-binding cassette transporter A1 expression. This indicates that long-term treadmill exercise alters the lipoprotein content, increases lipid metabolism and cholesterol transportation, reduces the soluble Aβ, and therein plays an important neuroprotective role and delays AD progression. We further show that medium exercise intensity (60%-70% of maximal oxygen uptake) was more efficacious in increasing lipid metabolism and reducing blood lipid levels and soluble Aβ levels, than low-intensity exercise (45-55% of maximal oxygen uptake). This research has broad prospects and implications, and offers a theoretical basis for the prevention of AD.
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Affiliation(s)
- B Zeng
- Department of Sports Medicine, China Medical University, Shenyang 110122, PR China
| | - G Zhao
- Department of Sports Medicine, China Medical University, Shenyang 110122, PR China
| | - H L Liu
- Department of Sports Medicine, China Medical University, Shenyang 110122, PR China.
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Zeng B, Gu Y, Sherma J. Transfer of TLC screening methods to quantitative HPTLC–densitometry methods for pharmaceutical products containing amlodipine besylate, cefpodoxime proxetil, cetirizine 2HCl, diclofenac sodium, efavirenz, mefenamic acid, and atovaquone + proguanil HCl. ACTA CHROMATOGR 2019. [DOI: 10.1556/1326.2018.00523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- B. Zeng
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | - Y. Gu
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | - J. Sherma
- Department of Chemistry, Lafayette College, Easton, PA, USA
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Lin B, Zeng B, Zhao J, Xu T, Wang Y, Hu B, Li F, Zhao Q, Liu R, Liu J, Chen JM, Huang D, Wang Y. Seven Novel and Three Known Mutations in FOXL2 in 10 Chinese Families with Blepharophimosis Syndrome. Curr Mol Med 2019; 18:152-159. [PMID: 30198434 DOI: 10.2174/1566524018666180907162619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 07/22/2018] [Accepted: 09/05/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Blepharophimosis syndrome (BPES) is characterized by eyelid malformation with occasional premature ovarian failure. Mutations in FOXL2 underlie a fraction of BPES cases. OBJECTIVE We aimed to investigate the genetic basis of BPES in 26 Chinese families that included 78 patients. METHODS We performed ophthalmological examinations on each family member. We used Sanger sequencing to screen FOXL2 exons and their flanking sequences. We also performed bioinformatics studies, structural modeling and pathogenicity evaluations on all identified variations. Literature was reviewed and genotype-phenotype correlation analysis was performed. RESULTS The patients had typical manifestations of BPES. Ten mutations were identified in ten of the twenty-six families. Among these, seven were novel mutations. These included the six truncating mutations, p.Glu69*, p.Gly256Glyfs*14, p.Ala14Serfs*135, p.Pro333Profs*200, p.Pro290Leufs*70, and p.Pro157Profs*91, and one missense mutation, p.Tyr59Cys. The mutations were scattered within the gene, and no mutational hotspots were found. Genotype-phenotype correlation analysis showed that frameshift or nonsense mutations were correlated with type I BPES, while in-frame or missense mutations were associated with type II BPES. CONCLUSION We report the largest BPES cohort in China thus far as well as seven novel mutations in FOXL2. The identification of novel mutations has not only expanded the mutational spectrum of the gene (which is valuable for mutation detection-based screening) but also suggests that most mutations within the Chinese population may not have been characterized yet.
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Affiliation(s)
- B Lin
- Oculoplasty Department, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yatsen University, Guangzhou, China
| | - B Zeng
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.,Department of Medical Genetics, Zhongshan School of Medicine and Center for Genome Research, Sun Yat-sen University, Guangzhou, China
| | - J Zhao
- Oculoplasty Department, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yatsen University, Guangzhou, China
| | - T Xu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Y Wang
- Fetal Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - B Hu
- Fifth Affiliated Hospital, Sun Yat-sen University-BGI Laboratory, Department of Experimental Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - F Li
- Department of Prenatal Diagnostic Center, Guangzhou Women and Children`s Medical Centre, Guangzhou Medical University, Guangzhou, China
| | - Q Zhao
- Department of Obstetrics and Gynecology, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen, Guangdong 529030, China
| | - R Liu
- Fifth Affiliated Hospital, Sun Yat-sen University-BGI Laboratory, Department of Experimental Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - J Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - J M Chen
- Institut National de la Sante et de la Recherche Medicale (INSERM), Brest, France.,Etablissement Francais du Sang (EFS) - Bretagne, Brest, France.,Faculte de Medecine et des Sciences de la Sante, Universite de Bretagne Occidentale (UBO), Brest, France
| | - D Huang
- Oculoplasty Department, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yatsen University, Guangzhou, China
| | - Y Wang
- Xinhua College, Sun Yat-sen University, Guangzhou, China.,Fifth Affiliated Hospital, Sun Yat-sen University, Zuhai 519000, China
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Zeng B, Zhu W, Fu Y, Zhou S. Response Mechanism of Oviposition and Relevant Protein Expression of Bactrocera cucurbitae (Coquillet) to Short-Term High-Temperature Conditions. Neotrop Entomol 2019; 48:197-206. [PMID: 30430415 DOI: 10.1007/s13744-018-0638-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 09/21/2018] [Indexed: 06/09/2023]
Abstract
Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) is an important pest of vegetables in Asia, the Middle East, Africa, and Hawaii. High temperature can significantly influence B. cucurbitae reproduction. The effect of short-term high-temperature exposure on proteins that affect oviposition was analyzed by proteomics. Among six key target genes for oviposition, the expression of Vitellogenin-1, Vitellogenin-2, and Vitellogenin receptor was similar in B. cucurbitae exposed to higher temperature compared to controls. However, levels of Vitellogenin-3 were reduced. Juvenile hormone (Jh)-inducible protein was downregulated and then upregulated, while the expression of Jh-epoxide hydrolase-2 showed the opposite Jh-inducible protein trend. Therefore, short-term high-temperature stress can cause differential expression of proteins related to oviposition in B. cucurbitae, which in turn further triggers the hormesis of oviposition. High-temperature conditions have become more frequent because of climate warming and are predicted to continue. The data indicate that climate effects on insect reproduction pose a significant threat to agriculture in a world of increasing population.
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Affiliation(s)
- B Zeng
- Institute of Tropical Agriculture and Forestry, Hainan Univ, Haikou, China
| | - W Zhu
- Institute of Tropical Agriculture and Forestry, Hainan Univ, Haikou, China
| | - Y Fu
- Institute of Tropical Agriculture and Forestry, Hainan Univ, Haikou, China
| | - S Zhou
- Institute of Tropical Agriculture and Forestry, Hainan Univ, Haikou, China.
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Liu L, Zeng B. [Research progress on stem cell technology and cardiac regeneration]. Zhonghua Xin Xue Guan Bing Za Zhi 2018; 46:577-580. [PMID: 30032554 DOI: 10.3760/cma.j.issn.0253-3758.2018.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Raschka S, More SK, Devadoss D, Zeng B, Kuhn LA, Basson MD. Identification of potential small-molecule protein-protein inhibitors of cancer metastasis by 3D epitope-based computational screening. J Physiol Pharmacol 2018; 69. [PMID: 29980145 DOI: 10.26402/jpp.2018.2.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/30/2018] [Indexed: 12/31/2022]
Abstract
In cancer cells exposed to extracellular pressure or shear stress, AKT1-FAK interaction drives focal adhesion kinase (FAK) phosphorylation, leading to force-activated cancer cell adhesion and metastasis. Blocking the AKT1-FAK interaction is therefore an attractive target for cancer therapy, avoiding the side effects of global FAK inhibition. Starting with our previous identification of a short FAK peptide that binds AKT1, we identified a series of small-molecule inhibitor candidates using a novel approach for inhibiting protein-protein interactions. Using a 3D structural fragment of the FAK peptide as the query, millions of drug-like, commercially available molecules were screened to identify a subset mimicking the volume and chemistry of the FAK fragment to test for their ability to block pressure-sensitive FAK phosphorylation by AKT1. Two compounds reduced the stimulation of FAK phosphorylation in response to extracellular pressure in human SW620 colon cancer cells without affecting basal FAK phosphorylation. Thus, using a 3D protein interaction epitope as a novel query for ligand-based virtual screening can successfully identify small-molecules that show promise in modulating cancer cell adhesion and metastasis.
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Affiliation(s)
- S Raschka
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, USA
| | - S K More
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, USA
| | - D Devadoss
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, USA
| | - B Zeng
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, USA.,Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, USA
| | - L A Kuhn
- Departments of Biochemistry and Molecular Biology and Computer Science and Engineering, Michigan State University, East Lansing, USA.
| | - M D Basson
- Departments of Surgery, Pathology, and Biomedical Sciences, University of North Dakota, Grand Forks, USA
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17
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Montico B, Lapenta C, Ravo M, Martorelli D, Muraro E, Zeng B, Comaro E, Spada M, Donati S, Santini SM, Tarallo R, Giurato G, Rizzo F, Weisz A, Belardelli F, Dolcetti R, Dal Col J. Exploiting a new strategy to induce immunogenic cell death to improve dendritic cell-based vaccines for lymphoma immunotherapy. Oncoimmunology 2017; 6:e1356964. [PMID: 29147614 DOI: 10.1080/2162402x.2017.1356964] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 07/06/2017] [Accepted: 07/11/2017] [Indexed: 12/22/2022] Open
Abstract
Although promising, the clinical benefit provided by dendritic cell (DC)-based vaccines is still limited and the choice of the optimal antigen formulation is still an unresolved issue. We have developed a new DC-based vaccination protocol for aggressive and/or refractory lymphomas which combines the unique features of interferon-conditioned DC (IFN-DC) with highly immunogenic tumor cell lysates (TCL) obtained from lymphoma cells undergoing immunogenic cell death. We show that treatment of mantle cell lymphoma (MCL) and diffuse large B-cell lymphoma (DLBCL) cell lines with 9-cis-retinoic acid and IFNα (RA/IFNα) induces early membrane exposure of Calreticulin, HSP70 and 90 together with CD47 down-regulation and enhanced HMGB1 secretion. Consistently, RA/IFNα-treated apoptotic cells and -TCLs were more efficiently phagocytosed by DCs compared to controls. Notably, cytotoxic T cells (CTLs) generated with autologous DCs pulsed with RA/IFNα-TCLs more efficiently recognized and specifically lysed MCL or DLBCL cells or targets loaded with several HLA-A*0201 cyclin D1 or HLA-B*0801 survivin epitopes. These cultures also showed an expansion of Th1 and Th17 cells and an increased Th17/Treg ratio. Moreover, DCs loaded with RA/IFNα-TCLs showed enhanced functional maturation and activation. NOD/SCID mice reconstituted with human peripheral blood lymphocytes and vaccinated with autologous RA/IFNα-TCL loaded-IFN-DCs showed lymphoma-specific T-cell responses and a significant decrease in tumor growth with respect to mice treated with IFN-DC unpulsed or loaded with untreated TCLs. This study demonstrates the feasibility and efficacy of the use of RA/IFNα to generate a highly immunogenic TCL as a suitable tumor antigen formulation for the development of effective anticancer DC-based vaccines.
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Affiliation(s)
- B Montico
- Centro di Riferimento Oncologico, Department of Translational Research, Immunopathology and Cancer biomarkers, Aviano (PN), Italy
| | - C Lapenta
- Istituto Superiore di Sanità, Department of Hematology, Oncology and Molecular Medicine, Rome, Italy
| | - M Ravo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi (SA), Italy
| | - D Martorelli
- Centro di Riferimento Oncologico, Department of Translational Research, Immunopathology and Cancer biomarkers, Aviano (PN), Italy
| | - E Muraro
- Centro di Riferimento Oncologico, Department of Translational Research, Immunopathology and Cancer biomarkers, Aviano (PN), Italy
| | - B Zeng
- The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia
| | - E Comaro
- Centro di Riferimento Oncologico, Department of Translational Research, Immunopathology and Cancer biomarkers, Aviano (PN), Italy
| | - M Spada
- Istituto Superiore di Sanità, Department of Hematology, Oncology and Molecular Medicine, Rome, Italy
| | - S Donati
- Istituto Superiore di Sanità, Department of Hematology, Oncology and Molecular Medicine, Rome, Italy
| | - S M Santini
- Istituto Superiore di Sanità, Department of Hematology, Oncology and Molecular Medicine, Rome, Italy
| | - R Tarallo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi (SA), Italy
| | - G Giurato
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi (SA), Italy.,Genomix4Life srl, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy
| | - F Rizzo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi (SA), Italy
| | - A Weisz
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi (SA), Italy
| | - F Belardelli
- Istituto Superiore di Sanità, Department of Hematology, Oncology and Molecular Medicine, Rome, Italy
| | - R Dolcetti
- Centro di Riferimento Oncologico, Department of Translational Research, Immunopathology and Cancer biomarkers, Aviano (PN), Italy.,The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia
| | - J Dal Col
- Centro di Riferimento Oncologico, Department of Translational Research, Immunopathology and Cancer biomarkers, Aviano (PN), Italy.,Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi (SA), Italy
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18
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Basson MD, Zeng B, Wang S. The C-terminal region of the focal adhesion kinase F1 domain binds Akt1 and inhibits pressure-induced cell adhesion. J Physiol Pharmacol 2017; 68:375-383. [PMID: 28820394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 05/29/2017] [Indexed: 06/07/2023]
Abstract
Increased extracellular pressure or shear stress activate a complex signal pathway that stimulates integrin binding affinity and potentiates metastatic cell adhesion. Inhibiting either focal adhesion kinase (FAK) and Akt1 can block this pathway, but risks interfering with the diverse other functions of each kinase. However, the mechanotransduced signal pathway involves a novel Akt1-FAK interaction not required for most FAK or Akt1 function, so modeling and blocking this interaction seems a desirable target. Building upon previous work suggesting that FAK-Akt1 binding is mediated by the FAK F1 lobe, we demonstrated that independently expressing the F1 domain in human Caco-2 or murine CT-26 colon cancer cells by transient or stable inducible plasmid expression respectively prevents the stimulation of cancer cell adhesion by increased extracellular pressure. Serial further truncation of the FAK F1 lobe identified shorter regions capable of pulling down Akt1 on a glutathione S-transferase (GST) - conjugated column. Ultimately, we identified a 33 residue segment (residues 94-126) at the C-terminal of the F1 lobe as sufficient to pull down Akt1. These findings raise the possibility of developing a treatment modality around the disruption of the FAK-Akt1 interaction using peptides modeled from FAK.
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Affiliation(s)
- M D Basson
- Departments of Surgery, Pathology, and Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA.
| | - B Zeng
- Departments of Surgery, Pathology, and Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
| | - S Wang
- Departments of Surgery, Pathology, and Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
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19
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Li XL, Zhang Z, Li ZX, Deng NJ, Zeng B, Chen YM. [Isolation of cariogenic Streptococcus mutans and the inhibitory effect of egg yolk antibody on caries]. Zhonghua Kou Qiang Yi Xue Za Zhi 2017; 52:248-253. [PMID: 28412792 DOI: 10.3760/cma.j.issn.1002-0098.2017.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To isolate the cariogenic Streptococcus mutans (Sm) strains and study the therapeutical effect of egg yolk antibody (IgY) of the Sm on dental caries development. Methods: Sm strains were isolated from the children's dental plaque samples. Morphological, biochemical and molecular biological methods were applied to identify the serotype, acid producing and adhesion abilities of isolated Sm strains. After inactivation one of the Sm strains was used as antigen to immune laying hens to collect and extract the specific anti-Sm IgY. The rats were infected with Sm (serotype e). After 16 weeks of infection, all the rats were found developing dental caries. The rats were then randomly divided into two groups. The rats in experimental group were supplied with diet containing anti-Sm IgY while the rats in control group with normal IgY. All rats were sacrificed after another 8 weeks' observation. The degree of caries for each rat was assessed using Keyes' method. Results: We isolated 7 Sm strains from the children's dental plaque samples in the present study. The numbers of serotype c, e, f, k were 3, 2, 0 and 2, respectively. All strains showed similar morphological and biochemical characters as standard UA159 Sm strain, and possessed strong capabilities of acid production and adherence. Interestingly, even the same serotypec strains, such as No.3 and No.7 strains, demonstrated significant difference on acid producing and adherence capabilities. After 16 weeks infection with serotype e strain, the rats' mandibular teeth were apparently decayed, and treatment with specific anti-Sm IgY obviously attenuated the development of caries in the experiment group rats (16.4±2.0) compared with that in the control group rats (30.2±9.3) (P<0.05) determined by Keyes' method. Conclusions: Seven cariogenic Sm strains of different serotypes were isolated, which possesses similar morphology and biochemical characters. Although belonging to the same serotype strains they always show significant difference in acid-producing and adherencec apabilities. Further experiment provides evidences that the serotype e strain could obviously induce caries independently, and employment of specific anti-Sm IgY as passive immunotherapy additive might effectively inhibit the further development of dental caries.
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Affiliation(s)
- X L Li
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - Z Zhang
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - Z X Li
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - N J Deng
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - B Zeng
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - Y M Chen
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
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20
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Zeng B, Sun JJ, Chen T, Sun BL, He Q, Chen XY, Zhang YL, Xi QY. Effects of Moringa oleifera silage on milk yield, nutrient digestibility and serum biochemical indexes of lactating dairy cows. J Anim Physiol Anim Nutr (Berl) 2017; 102:75-81. [PMID: 28299866 DOI: 10.1111/jpn.12660] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 08/16/2016] [Accepted: 11/14/2016] [Indexed: 01/26/2023]
Abstract
This study investigated the effects of Moringa oleifera (MO) as a partial substitute of alfalfa hay on milk yield, nutrient apparent digestibility and serum biochemical indexes of dairy cows. MO was harvested at 120 days post-seeding. Fresh MO was cut, mixed with chopped oat hay (425:575 on a DM basis), ensiled and stored for 60 days. Sixty healthy Holstein dairy cows were allocated to one of three groups: NM (no MO or control), LM (low MO; 25% alfalfa hay and 50% maize silage were replaced by MO silage) or HM (high MO; 50% alfalfa hay and 100% maize silage were replaced by MO silage). The feeding trial lasted 35 days. The LM and HM diets did not affect dry matter (DM) intake, milk yield or milk composition (lactose, milk fat, milk protein and somatic cell count). The apparent digestibility of DM and NDF was lower for HM group than NM group. Additionally, there were no significant differences in serum biochemical indexes between the LM and NM groups. The HM group had lower serum concentrations of total cholesterol, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol and higher serum concentrations of urea than the NM group. The partial replacement of alfalfa hay (≤50%) and maize silage with MO silage had no negative effects on milk yield, in vivo nutrient apparent digestibility or serum biochemical indexes of lactating cows.
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Affiliation(s)
- B Zeng
- College of Animal Science, South China Agriculture University, Guangzhou, China
| | - J J Sun
- College of Animal Science, South China Agriculture University, Guangzhou, China
| | - T Chen
- College of Animal Science, South China Agriculture University, Guangzhou, China
| | - B L Sun
- College of Animal Science, South China Agriculture University, Guangzhou, China
| | - Q He
- Guangdong Engineering & Research Center for Woody Fodder Plants, South China Agricultural University, Guangzhou, China
| | - X Y Chen
- Guangdong Engineering & Research Center for Woody Fodder Plants, South China Agricultural University, Guangzhou, China
| | - Y L Zhang
- College of Animal Science, South China Agriculture University, Guangzhou, China
| | - Q Y Xi
- College of Animal Science, South China Agriculture University, Guangzhou, China
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21
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Zeng B, Yan HD, Huang LK, Wang YC, Wu JH, Huang X, Zhang AL, Wang CR, Mu Q. Orthogonal design in the optimization of a start codon targeted (SCoT) PCR system in Roegneria kamoji Ohwi. Genet Mol Res 2016; 15:gmr-15-gmr15048968. [PMID: 27813608 DOI: 10.4238/gmr15048968] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Roegneria kamoji Ohwi is an excellent forage grass due to its high feeding value and high resistance to some biotic and abiotic stresses. However, the start codon targeted (SCoT) polymorphism has not been conducted on R. kamoji. In this study, an orthogonal L16 (45) design was employed to investigate the effects of five factors (Mg2+, dNTPs, Taq DNA polymerase, primer, and template DNA) on the polymerase chain reaction (PCR) to determine the optimal SCoT-PCR system for R. kamoji. The results showed that the most suitable conditions for SCoT-PCR in R. kamoji included 1.5 mM Mg2+, 0.15 mM dNTPs, 1.0 U Taq DNA polymerase, 0.4 pM primer, and 40 ng template DNA. SCoT primers 39 and 41 were used to verify the stability of the optimal reaction system, and amplification bands obtained from diverse samples were found to be clear, rich, and stable in polymorphisms, indicating that this reaction system can be used for SCoT-PCR analysis of R. kamoji. We have developed a simple and rapid way to study the mutual effects of factors and to obtain positive results through the use of an orthogonal design L16 (45) to optimize the SCoT-PCR system. This method may provide basic information for molecular marker-assisted breeding and analyses of genetic diversity in R. kamoji.
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Affiliation(s)
- B Zeng
- Department of Animal Science, Southwest University, Rongchang, Chongqing Province, China
| | - H D Yan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - L K Huang
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Y C Wang
- Animal Husbandry and Veterinary Research Institute of Guizhou Province, Guizhou, Guiyang, China
| | - J H Wu
- Guizhou Institute of Prataculture, Guizhou, Dushan, China
| | - X Huang
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - A L Zhang
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - C R Wang
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Q Mu
- Guizhou Institute of Prataculture, Guizhou, Dushan, China
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22
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Zheng P, Zeng B, Zhou C, Liu M, Fang Z, Xu X, Zeng L, Chen J, Fan S, Du X, Zhang X, Yang D, Yang Y, Meng H, Li W, Melgiri ND, Licinio J, Wei H, Xie P. Gut microbiome remodeling induces depressive-like behaviors through a pathway mediated by the host's metabolism. Mol Psychiatry 2016; 21:786-96. [PMID: 27067014 DOI: 10.1038/mp.2016.44] [Citation(s) in RCA: 1151] [Impact Index Per Article: 143.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 02/15/2016] [Accepted: 02/17/2016] [Indexed: 12/11/2022]
Abstract
Major depressive disorder (MDD) is the result of complex gene-environment interactions. According to the World Health Organization, MDD is the leading cause of disability worldwide, and it is a major contributor to the overall global burden of disease. However, the definitive environmental mechanisms underlying the pathophysiology of MDD remain elusive. The gut microbiome is an increasingly recognized environmental factor that can shape the brain through the microbiota-gut-brain axis. We show here that the absence of gut microbiota in germ-free (GF) mice resulted in decreased immobility time in the forced swimming test relative to conventionally raised healthy control mice. Moreover, from clinical sampling, the gut microbiotic compositions of MDD patients and healthy controls were significantly different with MDD patients characterized by significant changes in the relative abundance of Firmicutes, Actinobacteria and Bacteroidetes. Fecal microbiota transplantation of GF mice with 'depression microbiota' derived from MDD patients resulted in depression-like behaviors compared with colonization with 'healthy microbiota' derived from healthy control individuals. Mice harboring 'depression microbiota' primarily exhibited disturbances of microbial genes and host metabolites involved in carbohydrate and amino acid metabolism. This study demonstrates that dysbiosis of the gut microbiome may have a causal role in the development of depressive-like behaviors, in a pathway that is mediated through the host's metabolism.
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Affiliation(s)
- P Zheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - B Zeng
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - C Zhou
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - M Liu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - Z Fang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - X Xu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - L Zeng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - J Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - S Fan
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - X Du
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - X Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - D Yang
- Department of Neurology, Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Y Yang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - H Meng
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - W Li
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - N D Melgiri
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - J Licinio
- Mind & Brain Theme, South Australian Health and Medical Research Institute and Department of Psychiatry, School of Medicine, Flinders University, Adelaide, SA, Australia
| | - H Wei
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - P Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
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23
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Zeng B, Lu H, Xiao X, Zhou L, Lu J, Zhu L, Yu D, Zhao W. NovelEDAmutation in X-linked hypohidrotic ectodermal dysplasia and genotype-phenotype correlation. Oral Dis 2015; 21:994-1000. [DOI: 10.1111/odi.12376] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 08/25/2015] [Accepted: 09/16/2015] [Indexed: 11/28/2022]
Affiliation(s)
- B Zeng
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
- Department of Medical Genetics; Zhongshan School of Medicine and Center for Genome Research; Sun Yat-sen University; Guangzhou China
| | - H Lu
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
| | - X Xiao
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
| | - L Zhou
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
| | - J Lu
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
| | - L Zhu
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
| | - D Yu
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
| | - W Zhao
- Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology; Sun Yat-sen University; Guangzhou China
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24
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Basson MD, Zeng B, Wang S. Akt1 binds focal adhesion kinase via the Akt1 kinase domain independently of the pleckstrin homology domain. J Physiol Pharmacol 2015; 66:701-709. [PMID: 26579576] [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] [Grants] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 10/13/2015] [Indexed: 06/05/2023]
Abstract
Akt1 and focal adhesion kinase (FAK) are protein kinases that play key roles in normal cell signaling. Individually, aberrant expression of these kinases has been linked to a variety of cancers. Together, Akt1/FAK interactions facilitate cancer metastasis by increasing cell adhesion under conditions of increased extracellular pressure. Pathological and iatrogenic sources of pressure arise from tumor growth against constraining stroma or direct perioperative manipulation. We previously reported that 15 mmHg increased extracellular pressure causes Akt1 to both directly interact with FAK and to phosphorylate and activate it. We investigated the nature of the Akt1/FAK binding by creating truncations of recombinant FAK, conjugated to glutathione S-transferase (GST), to pull down full-length Akt1. Western blots probing for Akt1 showed that FAK/Akt1 binding persisted in FAK truncations consisting of only amino acids 1-126, FAK(NT1), which contains the F1 subdomain of its band 4.1, ezrin, radixin, and moesin (FERM) domain. Using FAK(NT1) as bait, we then pulled down truncated versions of recombinant Akt1 conjugated to HA (human influenza hemagglutinin). Probes for GST-FAK(NT1) showed Akt1-FAK binding to occur in the absence of the both the Akt1 (N)-terminal pleckstrin homology (PH) domain and its adjacent hinge region. The Akt1 (C)-terminal regulatory domain was equally unnecessary for Akt1/FAK co-immunoprecipitation. Truncations involving the Akt1 catalytic domain showed that the domain by itself was enough to pull down FAK. Additionally, a fragment spanning from the PH domain to half way through the catalytic domain demonstrated increased FAK binding compared to full length Akt1. These results begin to delineate the Akt1/FAK interaction and can be used to manipulate their force-activated signal interactions. Furthermore, the finding that the N-terminal half of the Akt1 catalytic domain binds so strongly to FAK when cleaved from the rest of the protein may suggest a means for developing novel inhibitors that target this specific Akt1/FAK interaction.
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Affiliation(s)
- M D Basson
- Department of Surgery, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, USA.
- Department of Basic Science, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, USA
| | - B Zeng
- Department of Surgery, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, USA
| | - S Wang
- Department of Surgery, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, USA
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25
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Tan BS, Hsu YT, Zeng B, Hatnean MC, Harrison N, Zhu Z, Hartstein M, Kiourlappou M, Srivastava A, Johannes MD, Murphy TP, Park JH, Balicas L, Lonzarich GG, Balakrishnan G, Sebastian SE. Heavy fermions. Unconventional Fermi surface in an insulating state. Science 2015; 349:287-90. [PMID: 26138105 DOI: 10.1126/science.aaa7974] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 06/24/2015] [Indexed: 11/03/2022]
Abstract
Insulators occur in more than one guise; a recent finding was a class of topological insulators, which host a conducting surface juxtaposed with an insulating bulk. Here, we report the observation of an unusual insulating state with an electrically insulating bulk that simultaneously yields bulk quantum oscillations with characteristics of an unconventional Fermi liquid. We present quantum oscillation measurements of magnetic torque in high-purity single crystals of the Kondo insulator SmB6, which reveal quantum oscillation frequencies characteristic of a large three-dimensional conduction electron Fermi surface similar to the metallic rare earth hexaborides such as PrB6 and LaB6. The quantum oscillation amplitude strongly increases at low temperatures, appearing strikingly at variance with conventional metallic behavior.
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Affiliation(s)
- B S Tan
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
| | - Y-T Hsu
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
| | - B Zeng
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
| | | | - N Harrison
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87504, USA
| | - Z Zhu
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87504, USA
| | - M Hartstein
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
| | - M Kiourlappou
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
| | - A Srivastava
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
| | - M D Johannes
- Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375, USA
| | - T P Murphy
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
| | - J-H Park
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
| | - L Balicas
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
| | - G G Lonzarich
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK
| | - G Balakrishnan
- Department of Physics, University of Warwick, Coventry CV4 7AL, UK
| | - Suchitra E Sebastian
- Cavendish Laboratory, Cambridge University, JJ Thomson Avenue, Cambridge CB3 OHE, UK.
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26
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Zeng B, Huang X, Huang LK, Zhang J, Yan HD, Luo D, Liang H, Yuan Y. Optimization of SCoT-PCR reaction system in Dactylis glomerata by orthogonal design. Genet Mol Res 2015; 14:3052-61. [PMID: 25966069 DOI: 10.4238/2015.april.10.15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The effects of 5 factors (template DNA, Mg(2+), dNTPs, Taq DNA polymerase, and primer) on the polymerase chain reaction (PCR) were investigated to optimize the start codon targeted polymor-phism (SCoT)-PCR system of Dactylis glomerata L., using an orthogo-nal design L16 (4(5)). A suitable SCoT-PCR system for D. glomerata was established; the 20 μL reaction volume contained 3.0 mM Mg(2+), 0.2 mM dNTPs, 1.0 U Taq DNA polymerase, 0.2 μM primer, 20 ng tem-plate DNA, and 2 μL 10X buffer. Each factor had a different effect on the amplification reaction, and the concentration of dNTPs had the larg-est effect on the SCoT-PCR system. We tested 10 orchardgrass samples to determine and verify the stability of the reaction system. The results showed that amplified bands from diverse materials were clear, stable, and rich in polymorphisms, indicating that the optimized system was very stable.
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Affiliation(s)
- B Zeng
- Department of Animal Science, Southwest University, Rongchang, Chongqing Province, China
| | - X Huang
- Department of Grassland Science, College of Animal Science and Technology College, Sichuan Agricultural University, Ya'an, Sichuan Province, China
| | - L K Huang
- Department of Grassland Science, College of Animal Science and Technology College, Sichuan Agricultural University, Ya'an, Sichuan Province, China
| | - J Zhang
- Chongqing Academy of Animal Sciences, Yuzhong, Chongqing Province, China
| | - H D Yan
- Department of Animal Science, Southwest University, Rongchang, Chongqing Province, China
| | - D Luo
- Department of Animal Science, Southwest University, Rongchang, Chongqing Province, China
| | - H Liang
- Department of Animal Science, Southwest University, Rongchang, Chongqing Province, China
| | - Y Yuan
- Department of Animal Science, Southwest University, Rongchang, Chongqing Province, China
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27
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Liu DY, Gan T, Rao NN, Xu GG, Zeng B, Li HL. Automatic Detection of Early Gastrointestinal Cancer Lesions Based on Optimal Feature Extraction from Gastroscopic Images. J Med Imaging Hlth Inform 2015. [DOI: 10.1166/jmihi.2015.1390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Xu J, Bi H, Chen R, Aslam AFM, Li Z, Ling L, Zeng B, Huang Y, Tan A. Transgenic characterization of two testis-specific promoters in the silkworm, Bombyx mori. Insect Mol Biol 2015; 24:183-190. [PMID: 25387604 DOI: 10.1111/imb.12144] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 06/04/2023]
Abstract
Sex-specific regulatory elements are key components for developing insect genetic sexing systems. The current insect genetic sexing system mainly uses a female-specific modification system whereas little success was reported on male-specific genetic modification. In the silkworm Bombyx mori, a lepidopteran model insect with economic importance, a transgene-based, female-specific lethality system has been established based on sex-specific alternative splicing factors and a female-specific promoter BmVgp (vitellogenin promoter) has been identified. However, no male-specific regulatory elements have yet been identified. Here we report the transgenic identification of two promoters that drive reporter gene expression in a testis-specific manner in B. mori. Putative promoter sequences from the B. mori Radial spoke head 1 gene (BmR1) and beta-tubulin 4 gene (Bmβ4) were introduced using piggybac-based germline transformation. In transgenic silkworms, expression of the reporter gene enhanced green fluorescent protein (EGFP) directed by either BmR1 promoter (BmR1p) or Bmβ4p showed precisely testis-specific manners from the larval to adult stage. Furthermore, EGFP expression of these two transgenic lines showed different localization in the testis, indicating that BmR1p or Bmβ4p might be used as distinct regulatory elements in directing testis-specific gene expression. Identification of these testis-specific promoters not only contributes to a better understanding of testis-specific gene function in insects, but also has potential applications in sterile insect techniques for pest management.
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Affiliation(s)
- J Xu
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
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29
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Yuan C, Chen J, Yu S, Chang Y, Mao J, Xu Y, Luo W, Zeng B, Dai L. Protein-responsive assemblies from catechol-metal ion supramolecular coordination. Soft Matter 2015; 11:2243-2250. [PMID: 25648855 DOI: 10.1039/c4sm02528h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Supramolecular self-assembly driven by catechol-metal ion coordination has gained great success in the fabrication of functional materials including adhesives, capsules, coatings and hydrogels. However, this route has encountered a great challenge in the construction of nanoarchitectures in the absence of removable templates, because of the uncontrollable crosslinking of catechol-metal ion coordination. Herein, we show that a supramolecular approach, combining both catechol-metal ion coordination and polymer self-assembly together, can organize polymers into hybrid nanoassemblies ranging from solid particles, homogeneous vesicles to Janus vesicles. Without the introduction of a specific binding ligand or complicated molecular design, these assemblies can totally disassemble in response to proteins. UV/vis absorption, fluorescence quenching and recovery investigations have confirmed that proteins can seize metal ions from the hybrid nanoassemblies, thus causing the degradation of catechol-metal ion coordination networks.
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Affiliation(s)
- C Yuan
- College of Materials, Xiamen University, Xiamen, 361005, China
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30
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Shi SF, Zeng B, Han HL, Hong X, Tsai HZ, Jung HS, Zettl A, Crommie MF, Wang F. Optimizing broadband terahertz modulation with hybrid graphene/metasurface structures. Nano Lett 2015; 15:372-377. [PMID: 25483819 DOI: 10.1021/nl503670d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.
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Affiliation(s)
- S-F Shi
- Department of Physics, University of California at Berkeley , Berkeley, California 94720, United States
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31
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An FP, Balantekin AB, Band HR, Beriguete W, Bishai M, Blyth S, Butorov I, Cao GF, Cao J, Chan YL, Chang JF, Chang LC, Chang Y, Chasman C, Chen H, Chen QY, Chen SM, Chen X, Chen X, Chen YX, Chen Y, Cheng YP, Cherwinka JJ, Chu MC, Cummings JP, de Arcos J, Deng ZY, Ding YY, Diwan MV, Draeger E, Du XF, Dwyer DA, Edwards WR, Ely SR, Fu JY, Ge LQ, Gill R, Gonchar M, Gong GH, Gong H, Grassi M, Gu WQ, Guan MY, Guo XH, Hackenburg RW, Han GH, Hans S, He M, Heeger KM, Heng YK, Hinrichs P, Hor YK, Hsiung YB, Hu BZ, Hu LM, Hu LJ, Hu T, Hu W, Huang EC, Huang H, Huang XT, Huber P, Hussain G, Isvan Z, Jaffe DE, Jaffke P, Jen KL, Jetter S, Ji XP, Ji XL, Jiang HJ, Jiao JB, Johnson RA, Kang L, Kettell SH, Kramer M, Kwan KK, Kwok MW, Kwok T, Lai WC, Lau K, Lebanowski L, Lee J, Lei RT, Leitner R, Leung A, Leung JKC, Lewis CA, Li DJ, Li F, Li GS, Li QJ, Li WD, Li XN, Li XQ, Li YF, Li ZB, Liang H, Lin CJ, Lin GL, Lin PY, Lin SK, Lin YC, Ling JJ, Link JM, Littenberg L, Littlejohn BR, Liu DW, Liu H, Liu JL, Liu JC, Liu SS, Liu YB, Lu C, Lu HQ, Luk KB, Ma QM, Ma XY, Ma XB, Ma YQ, McDonald KT, McFarlane MC, McKeown RD, Meng Y, Mitchell I, Monari Kebwaro J, Nakajima Y, Napolitano J, Naumov D, Naumova E, Nemchenok I, Ngai HY, Ning Z, Ochoa-Ricoux JP, Olshevski A, Patton S, Pec V, Peng JC, Piilonen LE, Pinsky L, Pun CSJ, Qi FZ, Qi M, Qian X, Raper N, Ren B, Ren J, Rosero R, Roskovec B, Ruan XC, Shao BB, Steiner H, Sun GX, Sun JL, Tam YH, Tang X, Themann H, Tsang KV, Tsang RHM, Tull CE, Tung YC, Viren B, Vorobel V, Wang CH, Wang LS, Wang LY, Wang M, Wang NY, Wang RG, Wang W, Wang WW, Wang X, Wang YF, Wang Z, Wang Z, Wang ZM, Webber DM, Wei HY, Wei YD, Wen LJ, Whisnant K, White CG, Whitehead L, Wise T, Wong HLH, Wong SCF, Worcester E, Wu Q, Xia DM, Xia JK, Xia X, Xing ZZ, Xu JY, Xu JL, Xu J, Xu Y, Xue T, Yan J, Yang CC, Yang L, Yang MS, Yang MT, Ye M, Yeh M, Yeh YS, Young BL, Yu GY, Yu JY, Yu ZY, Zang SL, Zeng B, Zhan L, Zhang C, Zhang FH, Zhang JW, Zhang QM, Zhang Q, Zhang SH, Zhang YC, Zhang YM, Zhang YH, Zhang YX, Zhang ZJ, Zhang ZY, Zhang ZP, Zhao J, Zhao QW, Zhao Y, Zhao YB, Zheng L, Zhong WL, Zhou L, Zhou ZY, Zhuang HL, Zou JH. Search for a light sterile neutrino at Daya Bay. Phys Rev Lett 2014; 113:141802. [PMID: 25325631 DOI: 10.1103/physrevlett.113.141802] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Indexed: 06/04/2023]
Abstract
A search for light sterile neutrino mixing was performed with the first 217 days of data from the Daya Bay Reactor Antineutrino Experiment. The experiment's unique configuration of multiple baselines from six 2.9 GW(th) nuclear reactors to six antineutrino detectors deployed in two near (effective baselines 512 m and 561 m) and one far (1579 m) underground experimental halls makes it possible to test for oscillations to a fourth (sterile) neutrino in the 10(-3) eV(2)<|Δm(41)(2) |< 0.3 eV(2) range. The relative spectral distortion due to the disappearance of electron antineutrinos was found to be consistent with that of the three-flavor oscillation model. The derived limits on sin(2) 2θ(14) cover the 10(-3) eV(2) ≲ |Δm(41)(2)| ≲ 0.1 eV(2) region, which was largely unexplored.
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Affiliation(s)
- F P An
- Institute of Modern Physics, East China University of Science and Technology, Shanghai
| | | | - H R Band
- University of Wisconsin, Madison, Wisconsin, USA
| | - W Beriguete
- Brookhaven National Laboratory, Upton, New York, USA
| | - M Bishai
- Brookhaven National Laboratory, Upton, New York, USA
| | - S Blyth
- Department of Physics, National Taiwan University, Taipei
| | - I Butorov
- Joint Institute for Nuclear Research, Dubna, Moscow Region
| | - G F Cao
- Institute of High Energy Physics, Beijing
| | - J Cao
- Institute of High Energy Physics, Beijing
| | - Y L Chan
- Chinese University of Hong Kong, Hong Kong
| | - J F Chang
- Institute of High Energy Physics, Beijing
| | - L C Chang
- Institute of Physics, National Chiao-Tung University, Hsinchu
| | - Y Chang
- National United University, Miao-Li
| | - C Chasman
- Brookhaven National Laboratory, Upton, New York, USA
| | - H Chen
- Institute of High Energy Physics, Beijing
| | | | - S M Chen
- Department of Engineering Physics, Tsinghua University, Beijing
| | - X Chen
- Chinese University of Hong Kong, Hong Kong
| | - X Chen
- Institute of High Energy Physics, Beijing
| | - Y X Chen
- North China Electric Power University, Beijing
| | - Y Chen
- Shenzhen University, Shenzhen
| | - Y P Cheng
- Institute of High Energy Physics, Beijing
| | | | - M C Chu
- Chinese University of Hong Kong, Hong Kong
| | | | - J de Arcos
- Department of Physics, Illinois Institute of Technology, Chicago, Illinois, USA
| | - Z Y Deng
- Institute of High Energy Physics, Beijing
| | - Y Y Ding
- Institute of High Energy Physics, Beijing
| | - M V Diwan
- Brookhaven National Laboratory, Upton, New York, USA
| | - E Draeger
- Department of Physics, Illinois Institute of Technology, Chicago, Illinois, USA
| | - X F Du
- Institute of High Energy Physics, Beijing
| | - D A Dwyer
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - W R Edwards
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - S R Ely
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - J Y Fu
- Institute of High Energy Physics, Beijing
| | - L Q Ge
- Chengdu University of Technology, Chengdu
| | - R Gill
- Brookhaven National Laboratory, Upton, New York, USA
| | - M Gonchar
- Joint Institute for Nuclear Research, Dubna, Moscow Region
| | - G H Gong
- Department of Engineering Physics, Tsinghua University, Beijing
| | - H Gong
- Department of Engineering Physics, Tsinghua University, Beijing
| | - M Grassi
- Institute of High Energy Physics, Beijing
| | - W Q Gu
- Shanghai Jiao Tong University, Shanghai
| | - M Y Guan
- Institute of High Energy Physics, Beijing
| | - X H Guo
- Beijing Normal University, Beijing
| | | | - G H Han
- College of William and Mary, Williamsburg, Virginia, USA
| | - S Hans
- Brookhaven National Laboratory, Upton, New York, USA
| | - M He
- Institute of High Energy Physics, Beijing
| | - K M Heeger
- University of Wisconsin, Madison, Wisconsin, USA and Department of Physics, Yale University, New Haven, Connecticut, USA
| | - Y K Heng
- Institute of High Energy Physics, Beijing
| | - P Hinrichs
- University of Wisconsin, Madison, Wisconsin, USA
| | - Y K Hor
- Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia, USA
| | - Y B Hsiung
- Department of Physics, National Taiwan University, Taipei
| | - B Z Hu
- Institute of Physics, National Chiao-Tung University, Hsinchu
| | - L M Hu
- Brookhaven National Laboratory, Upton, New York, USA
| | - L J Hu
- Beijing Normal University, Beijing
| | - T Hu
- Institute of High Energy Physics, Beijing
| | - W Hu
- Institute of High Energy Physics, Beijing
| | - E C Huang
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - H Huang
- China Institute of Atomic Energy, Beijing
| | | | - P Huber
- Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia, USA
| | - G Hussain
- Department of Engineering Physics, Tsinghua University, Beijing
| | - Z Isvan
- Brookhaven National Laboratory, Upton, New York, USA
| | - D E Jaffe
- Brookhaven National Laboratory, Upton, New York, USA
| | - P Jaffke
- Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia, USA
| | - K L Jen
- Institute of Physics, National Chiao-Tung University, Hsinchu
| | - S Jetter
- Institute of High Energy Physics, Beijing
| | - X P Ji
- School of Physics, Nankai University, Tianjin
| | - X L Ji
- Institute of High Energy Physics, Beijing
| | - H J Jiang
- Chengdu University of Technology, Chengdu
| | | | - R A Johnson
- Department of Physics, University of Cincinnati, Cincinnati, Ohio, USA
| | - L Kang
- Dongguan University of Technology, Dongguan
| | - S H Kettell
- Brookhaven National Laboratory, Upton, New York, USA
| | - M Kramer
- Lawrence Berkeley National Laboratory, Berkeley, California, USA and Department of Physics, University of California, Berkeley, California, USA
| | - K K Kwan
- Chinese University of Hong Kong, Hong Kong
| | - M W Kwok
- Chinese University of Hong Kong, Hong Kong
| | - T Kwok
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - W C Lai
- Chengdu University of Technology, Chengdu
| | - K Lau
- Department of Physics, University of Houston, Houston, Texas, USA
| | - L Lebanowski
- Department of Engineering Physics, Tsinghua University, Beijing
| | - J Lee
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - R T Lei
- Dongguan University of Technology, Dongguan
| | - R Leitner
- Charles University, Faculty of Mathematics and Physics, Prague
| | - A Leung
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - J K C Leung
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - C A Lewis
- University of Wisconsin, Madison, Wisconsin, USA
| | - D J Li
- University of Science and Technology of China, Hefei
| | - F Li
- Institute of High Energy Physics, Beijing and Chengdu University of Technology, Chengdu
| | - G S Li
- Shanghai Jiao Tong University, Shanghai
| | - Q J Li
- Institute of High Energy Physics, Beijing
| | - W D Li
- Institute of High Energy Physics, Beijing
| | - X N Li
- Institute of High Energy Physics, Beijing
| | - X Q Li
- School of Physics, Nankai University, Tianjin
| | - Y F Li
- Institute of High Energy Physics, Beijing
| | - Z B Li
- Sun Yat-Sen (Zhongshan) University, Guangzhou
| | - H Liang
- University of Science and Technology of China, Hefei
| | - C J Lin
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - G L Lin
- Institute of Physics, National Chiao-Tung University, Hsinchu
| | - P Y Lin
- Institute of Physics, National Chiao-Tung University, Hsinchu
| | - S K Lin
- Department of Physics, University of Houston, Houston, Texas, USA
| | - Y C Lin
- Chengdu University of Technology, Chengdu
| | - J J Ling
- Brookhaven National Laboratory, Upton, New York, USA and Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - J M Link
- Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia, USA
| | - L Littenberg
- Brookhaven National Laboratory, Upton, New York, USA
| | - B R Littlejohn
- Department of Physics, University of Cincinnati, Cincinnati, Ohio, USA
| | - D W Liu
- Department of Physics, University of Houston, Houston, Texas, USA
| | - H Liu
- Department of Physics, University of Houston, Houston, Texas, USA
| | - J L Liu
- Shanghai Jiao Tong University, Shanghai
| | - J C Liu
- Institute of High Energy Physics, Beijing
| | - S S Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Y B Liu
- Institute of High Energy Physics, Beijing
| | - C Lu
- Joseph Henry Laboratories, Princeton University, Princeton, New Jersey, USA
| | - H Q Lu
- Institute of High Energy Physics, Beijing
| | - K B Luk
- Lawrence Berkeley National Laboratory, Berkeley, California, USA and Department of Physics, University of California, Berkeley, California, USA
| | - Q M Ma
- Institute of High Energy Physics, Beijing
| | - X Y Ma
- Institute of High Energy Physics, Beijing
| | - X B Ma
- North China Electric Power University, Beijing
| | - Y Q Ma
- Institute of High Energy Physics, Beijing
| | - K T McDonald
- Joseph Henry Laboratories, Princeton University, Princeton, New Jersey, USA
| | | | - R D McKeown
- College of William and Mary, Williamsburg, Virginia, USA and California Institute of Technology, Pasadena, California, USA
| | - Y Meng
- Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia, USA
| | - I Mitchell
- Department of Physics, University of Houston, Houston, Texas, USA
| | | | - Y Nakajima
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - J Napolitano
- Department of Physics, College of Science and Technology, Temple University, Philadelphia, Pennsylvania, USA
| | - D Naumov
- Joint Institute for Nuclear Research, Dubna, Moscow Region
| | - E Naumova
- Joint Institute for Nuclear Research, Dubna, Moscow Region
| | - I Nemchenok
- Joint Institute for Nuclear Research, Dubna, Moscow Region
| | - H Y Ngai
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z Ning
- Institute of High Energy Physics, Beijing
| | - J P Ochoa-Ricoux
- Lawrence Berkeley National Laboratory, Berkeley, California, USA and Instituto de Física, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - A Olshevski
- Joint Institute for Nuclear Research, Dubna, Moscow Region
| | - S Patton
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - V Pec
- Charles University, Faculty of Mathematics and Physics, Prague
| | - J C Peng
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - L E Piilonen
- Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia, USA
| | - L Pinsky
- Department of Physics, University of Houston, Houston, Texas, USA
| | - C S J Pun
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - F Z Qi
- Institute of High Energy Physics, Beijing
| | - M Qi
- Nanjing University, Nanjing
| | - X Qian
- Brookhaven National Laboratory, Upton, New York, USA
| | - N Raper
- Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - B Ren
- Dongguan University of Technology, Dongguan
| | - J Ren
- China Institute of Atomic Energy, Beijing
| | - R Rosero
- Brookhaven National Laboratory, Upton, New York, USA
| | - B Roskovec
- Charles University, Faculty of Mathematics and Physics, Prague
| | - X C Ruan
- China Institute of Atomic Energy, Beijing
| | - B B Shao
- Department of Engineering Physics, Tsinghua University, Beijing
| | - H Steiner
- Lawrence Berkeley National Laboratory, Berkeley, California, USA and Department of Physics, University of California, Berkeley, California, USA
| | - G X Sun
- Institute of High Energy Physics, Beijing
| | - J L Sun
- China General Nuclear Power Group, Shenzhen
| | - Y H Tam
- Chinese University of Hong Kong, Hong Kong
| | - X Tang
- Institute of High Energy Physics, Beijing
| | - H Themann
- Brookhaven National Laboratory, Upton, New York, USA
| | - K V Tsang
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - R H M Tsang
- California Institute of Technology, Pasadena, California, USA
| | - C E Tull
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Y C Tung
- Department of Physics, National Taiwan University, Taipei
| | - B Viren
- Brookhaven National Laboratory, Upton, New York, USA
| | - V Vorobel
- Charles University, Faculty of Mathematics and Physics, Prague
| | - C H Wang
- National United University, Miao-Li
| | - L S Wang
- Institute of High Energy Physics, Beijing
| | - L Y Wang
- Institute of High Energy Physics, Beijing
| | - M Wang
- Shandong University, Jinan
| | - N Y Wang
- Beijing Normal University, Beijing
| | - R G Wang
- Institute of High Energy Physics, Beijing
| | - W Wang
- College of William and Mary, Williamsburg, Virginia, USA and Sun Yat-Sen (Zhongshan) University, Guangzhou
| | | | - X Wang
- College of Electronic Science and Engineering, National University of Defense Technology, Changsha
| | - Y F Wang
- Institute of High Energy Physics, Beijing
| | - Z Wang
- Department of Engineering Physics, Tsinghua University, Beijing
| | - Z Wang
- Institute of High Energy Physics, Beijing
| | - Z M Wang
- Institute of High Energy Physics, Beijing
| | - D M Webber
- University of Wisconsin, Madison, Wisconsin, USA
| | - H Y Wei
- Department of Engineering Physics, Tsinghua University, Beijing
| | - Y D Wei
- Dongguan University of Technology, Dongguan
| | - L J Wen
- Institute of High Energy Physics, Beijing
| | | | - C G White
- Department of Physics, Illinois Institute of Technology, Chicago, Illinois, USA
| | - L Whitehead
- Department of Physics, University of Houston, Houston, Texas, USA
| | - T Wise
- University of Wisconsin, Madison, Wisconsin, USA
| | - H L H Wong
- Lawrence Berkeley National Laboratory, Berkeley, California, USA and Department of Physics, University of California, Berkeley, California, USA
| | - S C F Wong
- Chinese University of Hong Kong, Hong Kong
| | - E Worcester
- Brookhaven National Laboratory, Upton, New York, USA
| | - Q Wu
- Shandong University, Jinan
| | - D M Xia
- Institute of High Energy Physics, Beijing
| | - J K Xia
- Institute of High Energy Physics, Beijing
| | - X Xia
- Shandong University, Jinan
| | - Z Z Xing
- Institute of High Energy Physics, Beijing
| | - J Y Xu
- Chinese University of Hong Kong, Hong Kong
| | - J L Xu
- Institute of High Energy Physics, Beijing
| | - J Xu
- Beijing Normal University, Beijing
| | - Y Xu
- School of Physics, Nankai University, Tianjin
| | - T Xue
- Department of Engineering Physics, Tsinghua University, Beijing
| | - J Yan
- Xi'an Jiaotong University, Xi'an
| | - C C Yang
- Institute of High Energy Physics, Beijing
| | - L Yang
- Dongguan University of Technology, Dongguan
| | - M S Yang
- Institute of High Energy Physics, Beijing
| | | | - M Ye
- Institute of High Energy Physics, Beijing
| | - M Yeh
- Brookhaven National Laboratory, Upton, New York, USA
| | - Y S Yeh
- Institute of Physics, National Chiao-Tung University, Hsinchu
| | - B L Young
- Iowa State University, Ames, Iowa, USA
| | - G Y Yu
- Nanjing University, Nanjing
| | - J Y Yu
- Department of Engineering Physics, Tsinghua University, Beijing
| | - Z Y Yu
- Institute of High Energy Physics, Beijing
| | | | - B Zeng
- Chengdu University of Technology, Chengdu
| | - L Zhan
- Institute of High Energy Physics, Beijing
| | - C Zhang
- Brookhaven National Laboratory, Upton, New York, USA
| | - F H Zhang
- Institute of High Energy Physics, Beijing
| | - J W Zhang
- Institute of High Energy Physics, Beijing
| | | | - Q Zhang
- Chengdu University of Technology, Chengdu
| | - S H Zhang
- Institute of High Energy Physics, Beijing
| | - Y C Zhang
- University of Science and Technology of China, Hefei
| | - Y M Zhang
- Department of Engineering Physics, Tsinghua University, Beijing
| | - Y H Zhang
- Institute of High Energy Physics, Beijing
| | - Y X Zhang
- China General Nuclear Power Group, Shenzhen
| | - Z J Zhang
- Dongguan University of Technology, Dongguan
| | - Z Y Zhang
- Institute of High Energy Physics, Beijing
| | - Z P Zhang
- University of Science and Technology of China, Hefei
| | - J Zhao
- Institute of High Energy Physics, Beijing
| | - Q W Zhao
- Institute of High Energy Physics, Beijing
| | - Y Zhao
- North China Electric Power University, Beijing and College of William and Mary, Williamsburg, Virginia, USA
| | - Y B Zhao
- Institute of High Energy Physics, Beijing
| | - L Zheng
- University of Science and Technology of China, Hefei
| | - W L Zhong
- Institute of High Energy Physics, Beijing
| | - L Zhou
- Institute of High Energy Physics, Beijing
| | - Z Y Zhou
- China Institute of Atomic Energy, Beijing
| | - H L Zhuang
- Institute of High Energy Physics, Beijing
| | - J H Zou
- Institute of High Energy Physics, Beijing
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An F, Balantekin A, Band H, Beriguete W, Bishai M, Blyth S, Butorov I, Cao G, Cao J, Chan Y, Chang J, Chang L, Chang Y, Chasman C, Chen H, Chen Q, Chen S, Chen X, Chen X, Chen Y, Chen Y, Cheng Y, Cherwinka J, Chu M, Cummings J, de Arcos J, Deng Z, Ding Y, Diwan M, Draeger E, Du X, Dwyer D, Edwards W, Ely S, Fu J, Ge L, Gill R, Gonchar M, Gong G, Gong H, Gu W, Guan M, Guo X, Hackenburg R, Han G, Hans S, He M, Heeger K, Heng Y, Hinrichs P, Hor Y, Hsiung Y, Hu B, Hu L, Hu L, Hu T, Hu W, Huang E, Huang H, Huang X, Huber P, Hussain G, Isvan Z, Jaffe D, Jaffke P, Jen K, Jetter S, Ji X, Ji X, Jiang H, Jiao J, Johnson R, Kang L, Kettell S, Kramer M, Kwan K, Kwok M, Kwok T, Lai W, Lau K, Lebanowski L, Lee J, Lei R, Leitner R, Leung A, Leung J, Lewis C, Li D, Li F, Li G, Li Q, Li W, Li X, Li X, Li Y, Li Z, Liang H, Lin C, Lin G, Lin P, Lin S, Lin Y, Ling J, Link J, Littenberg L, Littlejohn B, Liu D, Liu H, Liu J, Liu J, Liu S, Liu Y, Lu C, Lu H, Luk K, Ma Q, Ma X, Ma X, Ma Y, McDonald K, McFarlane M, McKeown R, Meng Y, Mitchell I, Monari Kebwaro J, Nakajima Y, Napolitano J, Naumov D, Naumova E, Nemchenok I, Ngai H, Ning Z, Ochoa-Ricoux J, Olshevski A, Patton S, Pec V, Peng J, Piilonen L, Pinsky L, Pun C, Qi F, Qi M, Qian X, Raper N, Ren B, Ren J, Rosero R, Roskovec B, Ruan X, Shao B, Steiner H, Sun G, Sun J, Tam Y, Tang X, Themann H, Tsang K, Tsang R, Tull C, Tung Y, Viren B, Vorobel V, Wang C, Wang L, Wang L, Wang M, Wang N, Wang R, Wang W, Wang W, Wang X, Wang Y, Wang Z, Wang Z, Wang Z, Webber D, Wei H, Wei Y, Wen L, Whisnant K, White C, Whitehead L, Wise T, Wong H, Wong S, Worcester E, Wu Q, Xia D, Xia J, Xia X, Xing Z, Xu J, Xu J, Xu J, Xu Y, Xue T, Yan J, Yang C, Yang L, Yang M, Yang M, Ye M, Yeh M, Yeh Y, Young B, Yu G, Yu J, Yu Z, Zang S, Zeng B, Zhan L, Zhang C, Zhang F, Zhang J, Zhang Q, Zhang Q, Zhang S, Zhang Y, Zhang Y, Zhang Y, Zhang Y, Zhang Z, Zhang Z, Zhang Z, Zhao J, Zhao Q, Zhao Y, Zhao Y, Zheng L, Zhong W, Zhou L, Zhou Z, Zhuang H, Zou J. Independent measurement of the neutrino mixing angleθ13via neutron capture on hydrogen at Daya Bay. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.90.071101] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cui YM, Zeng B, Wang Q, Long XJ, Chen W. Synthesis and crystal structure of a novel tri-nuclear nickel(II) complex derived from N,N′-(2-hydroxypropane-1,3-diyl)bis(salicylaldimine). RUSS J COORD CHEM+ 2014. [DOI: 10.1134/s1070328414100030] [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: 11/22/2022]
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Shi SF, Tang TT, Zeng B, Ju L, Zhou Q, Zettl A, Wang F. Controlling graphene ultrafast hot carrier response from metal-like to semiconductor-like by electrostatic gating. Nano Lett 2014; 14:1578-82. [PMID: 24564302 DOI: 10.1021/nl404826r] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We investigate the ultrafast terahertz response of electrostatically gated graphene upon optical excitation. We observe that the photoinduced terahertz absorption increases in charge neutral graphene but decreases in highly doped graphene. We show that this transition from semiconductor-like to metal-like response is unique for zero bandgap materials such as graphene. In charge neutral graphene photoexcited hot carriers effectively increase electron and hole densities and increase the conductivity. In highly doped graphene, however, photoexcitation does not change net conducting carrier concentration. Instead, it mainly increases electron scattering rate and reduce the conductivity.
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Affiliation(s)
- S-F Shi
- Department of Physics, University of California at Berkeley , Berkeley, California 94720, United States
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Abstract
OBJECTIVE This study evaluated the influence of different urination methods on the urinary systems of patients with spinal cord injury. METHODS Patients with spinal cord injury were grouped according to their usual voiding method: clean intermittent catheterization (CIC); Credé manoeuvre/reflex voiding; indwelling catheterization; normal voiding. Urinary tract infections (UTIs) were monitored and type B-ultra-sonography (B-USG) scans, renal function tests and urodynamic studies were performed in all patients over a 2-year period. RESULTS Compared with the normal voiding group (n = 14), incidence rates of UTIs were significantly different in the Credé manoeuvre/reflex voiding (n = 26) and indwelling catheterization (n = 12) groups but not in the CIC group (n = 15). All intervention groups had a significantly higher rate of positive findings on B-USG scan and a significantly increased residual urine volume, compared with the normal voiding group. In addition, residual urine volume was significantly lower in the CIC group compared with the Credé manoeuvre/reflex voiding and indwelling catheterization groups. CONCLUSION CIC was shown to be the optimal method for assisted bladder voiding after spinal cord injury.
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Affiliation(s)
- L Shen
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China
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Zhang Q, Li G, Rhodes D, Kiswandhi A, Besara T, Zeng B, Sun J, Siegrist T, Johannes MD, Balicas L. CORRIGENDUM: Superconductivity with extremely large upper critical fields in Nb2Pd0.81S5. Sci Rep 2013; 3:1682. [PMID: 23604219 PMCID: PMC3631946 DOI: 10.1038/srep01682] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Zhang Q, Li G, Rhodes D, Kiswandhi A, Besara T, Zeng B, Sun J, Siegrist T, Johannes MD, Balicas L. Superconductivity with extremely large upper critical fields in Nb2Pd0.81S5. Sci Rep 2013; 3:1446. [PMID: 23486091 PMCID: PMC3595695 DOI: 10.1038/srep01446] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 02/27/2013] [Indexed: 12/03/2022] Open
Abstract
Here, we report the discovery of superconductivity in a new transition metal-chalcogenide compound, i.e. Nb2Pd0.81S5, with a transition temperature Tc is approximately equal to 6.6 K. Despite its relatively low Tc, it displays remarkably high and anisotropic superconducting upper critical fields, e.g. μ0Hc2 (T → 0 K) > 37 T for fields applied along the crystallographic b-axis. For a field applied perpendicularly to the b-axis, μ0Hc2 shows a linear dependence in temperature which coupled to a temperature-dependent anisotropy of the upper critical fields, suggests that Nb2Pd0.81S5 is a multi-band superconductor. This is consistent with band structure calculations which reveal nearly cylindrical and quasi-one-dimensional Fermi surface sheets having hole and electron character, respectively. The static spin susceptibility as calculated through the random phase approximation, reveals strong peaks suggesting proximity to a magnetic state and therefore the possibility of unconventional superconductivity.
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Affiliation(s)
- Q. Zhang
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - G. Li
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - D. Rhodes
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - A. Kiswandhi
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
- Department of Physics, Florida State University, Tallahassee, Florida 32306-3016, USA
| | - T. Besara
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - B. Zeng
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - J. Sun
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - T. Siegrist
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
- Department of Chemical and Biomedical Engineering, Florida State University, Tallahassee, Florida 32310, USA
| | - M. D. Johannes
- Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375, USA
| | - L. Balicas
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
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Liu S, Zhao X, Pan T, Wu S, Zeng B, Zeng H, Gao M, Zhang Y, Huang W, Lin Y. Template effect of hydrolysis of the catalyst precursor on growth of carbon nanotube arrays. J Colloid Interface Sci 2012; 374:34-9. [DOI: 10.1016/j.jcis.2012.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 01/31/2012] [Accepted: 02/01/2012] [Indexed: 10/14/2022]
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Puckett RL, Orsini JJ, Pastores GM, Wang RY, Chang R, Saavedra-Matiz CA, Torres PA, Zeng B, Caggana M, Lorey F, Abdenur JE. Krabbe disease: clinical, biochemical and molecular information on six new patients and successful retrospective diagnosis using stored newborn screening cards. Mol Genet Metab 2012; 105:126-31. [PMID: 22115770 DOI: 10.1016/j.ymgme.2011.10.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Revised: 10/18/2011] [Accepted: 10/18/2011] [Indexed: 10/16/2022]
Abstract
PURPOSE To present clinical, biochemical and molecular information on six new clinically diagnosed Krabbe disease patients and assess the sensitivity of retrospective galactocerebrosidase measurement in their newborn screening samples. METHODS Medical records were reviewed. Galactocerebrosidase activity was measured in leukocytes and, retrospectively, in the patients' newborn screening cards (stored for 1.4 to 13.5 years). GALC gene mutation analysis was performed. RESULTS Five patients with Krabbe disease, one of whom also had hydrocephalus, became symptomatic during infancy. A sixth patient presented with seizures and developmental regression at age two and had a protracted disease course. Galactocerebrosidase activity in leukocytes ranged from 0.00 to 0.20 nmol/h/mg protein. Low galactocerebrosidase activity (range: 3.2% to 11.1% of the daily mean), consistent with Krabbe disease, was detected in each of the newborn screening samples. GALC molecular analysis identified six previously unreported mutations and two novel sequence variants. CONCLUSION Our cases highlight the clinical variability of Krabbe disease. Galactocerebrosidase activity in newborn dried blood spots is a highly sensitive test, even when samples have been stored for many years. The high frequency of private mutations in the GALC gene may limit the use of genetic information for making treatment decisions in the newborn period.
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Affiliation(s)
- R L Puckett
- Division of Metabolic Disorders, CHOC Children's, Orange, CA 92868, USA
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Ruan Z, Luo C, Shi Z, Zhang B, Zeng B, Zhang C. Intraoperative reduction of distal tibiofibular joint aided by three-dimensional fluoroscopy. Technol Health Care 2011; 19:161-6. [PMID: 21610297 DOI: 10.3233/thc-2011-0618] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The aim of the study was to demonstrate the surgical work-flow of the intraoperative 3D fluoroscopy (Acadis)-aided reduction for distal tibiofibular joint. MATERIAL AND METHOD Ten ankle fracture patients with dislocated syndesmosis were treated. The surgical work-flow of intraoperative 3D (Acadis)-fluoroscopy-aided reduction was described. Axial imaging was measured for quality of syndesmotic reduction by measuring the distance between the fibular and the posterior and anterior facet of tibial incisura along a line perpendicular to joint space. RESULT Acadis 3D scan was successfully accomplished. The syndesmosis of the healthy side was symmetrical. The asymmetry of syndesmosis prior to transsyndesmotic fixation (D) was 3.7 mm on average (2.2-8.2 mm). The asymmetry of syndesmosis after transsyndesmotic fixation (E) was 1.7 mm on average (1.2-4.2 mm). CONCLUSION Intraoperative 3D-fluoroscopy was able to detect subtle malreduction of the syndesmosis in the operative treaetment of ankle fractures. The intraoperative 3D-fluoroscopy-aided reduction for the distal tibiofibular syndesmosis is effective.
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Affiliation(s)
- Zhiyong Ruan
- Department of Orthopaedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
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41
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Song W, Chen Y, Shen H, Yuan T, Zhang C, Zeng B. Biochemical markers comparison of dynamic hip screw and Gamma nail implants in the treatment of stable intertrochanteric fracture: a prospective study of 60 patients. J Int Med Res 2011; 39:822-9. [PMID: 21819714 DOI: 10.1177/147323001103900315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This prospective study compared the extent of surgical trauma following dynamic hip screw (DHS) or Gamma nail (GN) implantation in 60 patients (≥ 60 years old) with stable intertrochanteric fracture. Levels of the biochemical markers creatinine kinase (CK) and C-reactive protein (CRP) were measured pre- and postoperatively. CRP levels were statistically significantly lower on postoperative days 1 and 2 in patients in the DHS versus the GN group; no other differences were observed. Surgical procedures for DHS implantation were considered less invasive than those for GN implantation, although the degree of muscle damage was similar in both groups. The degree of bone and bone marrow damage, rather than muscle tissue damage, may be crucial for determining the CRP response during the operative period. It is concluded that DHS implantation may be described as a more 'systemically' minimally invasive procedure than GN implantation.
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Affiliation(s)
- W Song
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China.
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Han X, Feng F, Zu J, Tang S, Bamikole M, Tan Z, Zeng B, Zhou C, Wang M. Effects of conjugated linoleic acid supplementation on growth, carcass characteristics and fatty acid profiles of muscle and fat in growing-finishing pigs. J Anim Feed Sci 2011. [DOI: 10.22358/jafs/66169/2011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Yuan ZQ, Tang SX, Zeng B, Wang M, Tan ZL, Sun ZH, Zhou CS, Han XF, Bamikole MA. Effects of dietary supplementation with alkyl polyglycoside, a nonionic surfactant, on nutrient digestion and ruminal fermentation in goats1. J Anim Sci 2010; 88:3984-91. [DOI: 10.2527/jas.2009-2397] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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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Zeng B, Mu G, Luo H, Xiang T, Mazin I, Yang H, Shan L, Ren C, Dai P, Wen HH. Anisotropic structure of the order parameter in FeSe(0.45)Te(0.55) revealed by angle-resolved specific heat. Nat Commun 2010; 1:112. [PMID: 21081910 PMCID: PMC3066551 DOI: 10.1038/ncomms1115] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 10/18/2010] [Indexed: 11/09/2022] Open
Abstract
The central issues for understanding iron (Fe)-based superconductors are the symmetry and structure of the superconducting gap. So far the experimental data and theoretical models have been highly controversial. Some experiments favor two or more constant or nearly constant gaps, others indicate strong anisotropy and yet others suggest gap zeros ('nodes'). A unique method for addressing this issue, and one of very few methods that are bulk and angle resolved, is measuring the electronic-specific heat in a rotating magnetic field. In this study, we present the first such measurement for an Fe-based high-T(c) superconductor. We observed a fourfold oscillation of the specific heat as a function of the in-plane magnetic field direction. Our results are consistent with the expectations for an extended s-wave model, with a significant gap anisotropy on the electron pockets and the gap minima along the ΓM (Fe-Fe bond) direction.
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Affiliation(s)
- B. Zeng
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - G. Mu
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - H.Q. Luo
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - T. Xiang
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - I.I. Mazin
- Code 6391, Naval Research Laboratory, Washington, District of Columbia 20375, USA
| | - H. Yang
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
| | - L. Shan
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - C. Ren
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - P.C. Dai
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
- Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200, USA
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, USA
| | - H.-H. Wen
- National Laboratory for Superconductivity, Institute of Physics and National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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Cao X, Sun Y, Wang C, Zeng B. Purification and characterization of a new D-galactose-specific lectin from the housefly, Musca domestica, and its antiproliferative effect on human K562 and MCF-7 tumor cells. J Insect Sci 2010. [PMID: 20673196 DOI: 10.1673/031.010.7901] [] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
In the present work, a D-galactose-specific lectin with novel N-terminal sequence was purified from Musca domestica L. (Diptera: Muscidae) pupae. The purification was performed using affinity chromatography, ultra-filtration, and HPLC. The haemagglutinating activity of M. domestica lectin was specifically inhibited by D-galactose. The haemagglutinating activity of this lectin was stable at temperatures up to 65 degrees C and in pH ranging from 4 to 8. Salts including FeCl(3) and MnCl(2) inhibited the haemagglutinating process, whereas NaCl, KCl, CaCl(2), MgCl(2), ZnCl(2), and AlCl(3) did not. By SDS-PAGE, purified M. domestica pupae lectin yielded a single band with a molecular weight of 40 kDa, with or without reduction of beta-mercaptoethanol, and it could be stained with Alcian Blue 8 GX. The morphology of purified lectin was observed by atomic force microscopy, which indicated that M. domestica lectin was an 8.27 nm high, globular shaped glycoprotein with a 1.41 nm high polysaccharide chain. In addition, antiproliferative activity of this lectin against tumor cells K562 and MCF-7 was determined with a colorimetric assay using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide, which showed that the antiproliferative process was time- and dose-dependent with an IC(50) of 5.7 and 6.7 at 24 h, 5.5 and 6.4 at 36 h, 5.2 and 6.5 microM at 48 h, respectively.
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Affiliation(s)
- X Cao
- Tianjin University of Science and Technology, Tianjin, P.R. China.
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Liao A, Lu Y, Zeng B, Zhang Y, Xiang W, Hu L. Quantitative and functional changes of peripheral natural killer cells in women with reproductive failure after artificial insemination with donor sperm. J Reprod Immunol 2010. [DOI: 10.1016/j.jri.2010.06.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
Feral camels have significant negative impacts on the environment and the social/cultural values of Aboriginal people. These impacts include damage to vegetation through feeding behaviour and trampling; suppression of recruitment in some plant species; damage to wetlands through fouling, trampling, and sedimentation; competition with native animals for food, water and shelter; damage to sites such as waterholes, that have cultural significance to Aboriginal people; destruction of bushfood resources; reduction in Aboriginal people’s enjoyment of natural areas; creation of dangerous driving conditions; damage to people and vehicles due to collisions, and being a general nuisance in remote settlements. Negative economic impacts of feral camels mainly include direct control and management costs, impacts on livestock production through camels competing with stock for food and other resources and damage to production-related infrastructure. The annual net impact cost of feral camels was estimated to be –$10.67 million for those elements that could be evaluated according to market values. We established a positive density/damage relationship for camels and infrastructure on pastoral properties, which is likely to hold true for environmental variables and cultural/social variables as well. Therefore, irrespective of climate change, the magnitude of the negative impacts of feral camels will undoubtedly increase if the population is allowed to continue to increase. Furthermore, the likelihood that camels would be epidemiologically involved in the spread of exotic diseases like bluetongue and surra (were there to be outbreaks of these diseases in Australia) is also very likely to increase with population density. On the basis of our present understanding, we recommend that feral camels be managed to a long-term target density of 0.1–0.2 camels/km2 at property to regional scales (areas in the order of 10 000–100 000 km2) in order to mitigate broad-scale negative impacts on the environmental, social/cultural and production assets of the Australian rangelands.
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Cao X, Huo Z, Lu M, Mao D, Zhao Q, Xu C, Wang C, Zeng B. Purification of lectin from larvae of the fly, Musca domestica, and in vitro anti-tumor activity in MCF-7 cells. J Insect Sci 2010; 10:164. [PMID: 21067415 PMCID: PMC3016858 DOI: 10.1673/031.010.14124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Accepted: 01/12/2009] [Indexed: 05/30/2023]
Abstract
A new lectin was purified from larvae of the fly, Musca domestica L. (Diptera: Muscidae) (MLL-2, 38 kDa) using affinity chromatography and HPLC. Anti-tumor activity of MLL-2 was demonstrated by its inhibition of proliferation of human breast cancer (MCF-7) cells in a time-and dose-dependent manner. The results of acridine orange staining indicated that MLL-2 caused apoptosis in MCF-7 cells. DNA fragmentation in MCF-7 cells has been detected by TUNEL. Flow cytometric analysis also demonstrated that MLL-2 caused dose-dependent apoptosis of MCF-7 cells through cell arrest at G2/M phase. The MLL-2 induced a sustained increase in concentration of intracellular free calcium. Western blot revealed that MLL-2 induced apoptosis in MCF-7 cells was associated with typical apoptosis proteins in the mitochondrial pathway. In addition, the caspase-3 activity in MCF-7 cells treated with MLL-2 for 48 hours was significantly increased compared to controls (407.4 ± 3.0 vs. 1749.2 ± 6.0, P <0.01). Since MLL-2 induced apoptosis in MCF-7cells the mitochondrial pathway may be the main pathway of antitumor activity.
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Affiliation(s)
- X. Cao
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Z. Huo
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - M. Lu
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - D. Mao
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Q. Zhao
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - C. Xu
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - C. Wang
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - B. Zeng
- Ministry of Education, Key Laboratory of Food Nutrition and Safety, School of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
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Cao X, Sun Y, Wang C, Zeng B. Purification and characterization of a new D-galactose-specific lectin from the housefly, Musca domestica, and its antiproliferative effect on human K562 and MCF-7 tumor cells. J Insect Sci 2010; 10:79. [PMID: 20673196 PMCID: PMC3383435 DOI: 10.1673/031.010.7901] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2008] [Accepted: 09/01/2008] [Indexed: 05/29/2023]
Abstract
In the present work, a D-galactose-specific lectin with novel N-terminal sequence was purified from Musca domestica L. (Diptera: Muscidae) pupae. The purification was performed using affinity chromatography, ultra-filtration, and HPLC. The haemagglutinating activity of M. domestica lectin was specifically inhibited by D-galactose. The haemagglutinating activity of this lectin was stable at temperatures up to 65 degrees C and in pH ranging from 4 to 8. Salts including FeCl(3) and MnCl(2) inhibited the haemagglutinating process, whereas NaCl, KCl, CaCl(2), MgCl(2), ZnCl(2), and AlCl(3) did not. By SDS-PAGE, purified M. domestica pupae lectin yielded a single band with a molecular weight of 40 kDa, with or without reduction of beta-mercaptoethanol, and it could be stained with Alcian Blue 8 GX. The morphology of purified lectin was observed by atomic force microscopy, which indicated that M. domestica lectin was an 8.27 nm high, globular shaped glycoprotein with a 1.41 nm high polysaccharide chain. In addition, antiproliferative activity of this lectin against tumor cells K562 and MCF-7 was determined with a colorimetric assay using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide, which showed that the antiproliferative process was time- and dose-dependent with an IC(50) of 5.7 and 6.7 at 24 h, 5.5 and 6.4 at 36 h, 5.2 and 6.5 microM at 48 h, respectively.
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Affiliation(s)
- X Cao
- Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Y Sun
- Tianjin University of Science and Technology, Tianjin, P.R. China
| | - C Wang
- Tianjin University of Science and Technology, Tianjin, P.R. China
| | - B. Zeng
- Tianjin University of Science and Technology, Tianjin, P.R. China
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Zeng B, Edwards GP. Perceptions of pastoralists and conservation reserve managers on managing feral camels and their impacts. Rangel J 2010. [DOI: 10.1071/rj09036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The perceptions of people living within the current range of feral camels and involved in the pastoral industry and conservation reserve management were assessed through a questionnaire survey. The survey was designed to gauge understanding about the distribution and abundance of feral camels, perspective on camel impacts, and attitudes towards different camel management options. Camels occurred on 74.2% of pastoral properties and 51.4% of reserves that were surveyed. Camels were reported to be increasing on more than 50% of pastoral properties and 88% of reserves and were reported to cause damage on most properties where they occurred. The total monetary value of this damage (including management to mitigate it) was estimated to be $7.15 million per annum on the pastoral estate and $0.37 million per annum across the conservation estate within or on the margins of the camel range. On the pastoral estate, ~$2.40 million of the damage per annum was to infrastructure whereas production losses amounted to $3.42 million per annum. A minority of pastoral properties and reserves reported tangible benefits that accrued from selling camels, eating camels and using camels for natural resource management activities including weed control. The monetary value of the benefit was estimated to be about $0.58 million per annum across the pastoral estate, compared with ~$34 379 per annum across the conservation estate. Pastoralists and reserve managers generally saw a need to control camels and their impacts and currently play an active role in this regard. Both landholder groups favoured culling and commercial use to manage camel impacts but were comfortable using all of the available approaches and willing to consider new ones.
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