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He T, Tang Q, Ren Q, Liu Y, He G, Pan Y, Wang Z, Huang P, Lin J. Different Valence States of Copper Ion Delivery against Triple-Negative Breast Cancer. ACS Nano 2024. [PMID: 38320291 DOI: 10.1021/acsnano.3c10226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Different valence states of copper (Cu) ions are involved in complicated redox reactions in vivo, which are closely related to tumor proliferation and death pathways, such as cuproptosis and chemodynamic therapy (CDT). Cu ion mediated Fenton-like reagents induced tumor cell death which presents compelling attention for the CDT of tumors. However, the superiority of different valence states of Cu ions in the antitumor effect is unknown. In this study, we investigated different valence states of Cu ions in modulating tumor cell death by Cu-chelated cyanine dye against triple-negative breast cancer. The cuprous ion (Cu+) and copper ion (Cu2+) were chelated with four nitrogen atoms of dipicolylethylenediamine-modified cyanine for the construction of Cu+ and Cu2+ chelated cyanine dyes (denoted as CC1 and CC2, respectively). Upon 660 nm laser irradiation, the CC1 or CC2 can generate reactive oxygen species, which could disrupt the cyanine structure, achieving the rapid release of Cu ions and initiating the Fenton-like reaction for CDT. Compared with Cu2+-based Fenton-like reagent, the CC1 with Cu+ exhibited a better therapeutic outcome for the tumor due to there being no need for a reduction by glutathione and a shorter route to generate more hydroxyl radicals. Our findings suggest the precision delivery of Cu+ could achieve highly efficient antitumor therapy.
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Affiliation(s)
- Ting He
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Qinan Tang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Qiaoju Ren
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Yurong Liu
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Gang He
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Yuantao Pan
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Ziguang Wang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
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Wang ZH, Ren Q, Liu GL, Zhou LL, Ba TH, Han XY, Ji LN. [Individualized treatment of glucokinase-maturity-onset diabetes of the young with pregnancy and analysis of glycemic variability during pregnancy: a case report]. Zhonghua Nei Ke Za Zhi 2023; 62:91-94. [PMID: 36631043 DOI: 10.3760/cma.j.cn112138-20220511-00359] [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: 01/13/2023]
Affiliation(s)
- Z H Wang
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - Q Ren
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - G L Liu
- Department of Obstetrics, Peking University People's Hospital, Beijing 100044, China
| | - L L Zhou
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - T H Ba
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - X Y Han
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - L N Ji
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
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3
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Ren Q, Chu Z, Cheng L, Cheng H. [Characteristics and significance of outer retinal thickness changes in reticular macular disease]. Zhonghua Yan Ke Za Zhi 2022; 58:1024-1032. [PMID: 36480883 DOI: 10.3760/cma.j.cn112142-20220430-00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective: To study the characteristics and significance of changes in the thickness of the outer retinal layer (ORL) outside the macula in patients with reticular macular disease (RMD). Methods: A cross-sectional study was conducted. The clinical data of patients who visited the Department of Ophthalmology of the First Affiliated Hospital of Guangzhou Medical University from February to September 2019 were retrospectively collected. Thirty-one patients with at least one eye (54 eyes in total) diagnosed with early/mid-stage age-related macular degeneration (AMD) were consecutively included in the AMD group, and 33 patients with at least one eye (64 eyes in total) showing subretinal wart-like deposits on optical coherence tomography images were consecutively included in the RMD group. Thirty-two volunteers aged between 50 to 90 years with a normal fundus in both eyes (64 eyes in total) were consecutively included in the healthy control (HC) group. Frequency domain optical coherence tomography was applied to examine and analyze the thickness features of the ORL, inner retinal layer and choroid at the macular fovea (F), 2 mm of the temporal edge (T), the nasal edge (N), the superior edge (S) and inferior edge (I) of the macular fovea in each group. The correlations of the thickness of ORL with the choroidal thickness and the blood flow density of the choriocapillaris layer in patients with RMD were also analyzed. Results: The thickness of ORL at the F, T, S and I sites in the RMD group was significantly thinner than that in the AMD and HC groups. The difference was most obvious at the F site [(90.27±8.93), (98.04±11.7) and (97.19±7.02)μm] in the RMD, AMD and HC groups, respectively; all P<0.01). In the logistic regression model with independent variables of the ORL thickness at the macular F site, gender and age, there was a significant association between the thickness of ORL at the F site and the incidence of RMD (odds ratio=0.926, P<0.05). The ORL and choroid in the eyes of patients with RMD were significantly thinner at the F site [(90.27±8.93) and (163.21±72.43) μm, respectively; both P<0.01] compared with the AMD [(98.04±11.7) and (235.34±64.15) μm, respectively] and HC [(97.19±7.02) and (240.08±62.27) μm, respectively] groups. However, the ORL and choroidal thickness did not show significant and strong linear correlations at multiple sites. In contrast, there was a significant linear correlation between the blood flow density of the choriocapillaris layer and the thickness of ORL at the F, T and S sites in patients with RMD (r=0.487, 0.722, 0.467, respectively; all P<0.05). Conclusions: The thickness of ORL outside the macula of eyes with RMD is thinner than that of healthy eyes and eyes with early/mid-stage AMD. The thinning of ORL outside the macula is related to the decrease in the blood flow density of the choriocapillaris layer in patients with RMD.
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Affiliation(s)
- Q Ren
- Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Z Chu
- Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - L Cheng
- Zhongshan Ophthalmic Centre, Sun Yat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - H Cheng
- Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
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Kwon K, Pan J, Guo Y, Ren Q, Yang Z, Tao J, Ji F. Demirjian method and Willems method to study the dental age of adolescents in Shanghai before and after 10 years. Folia Morphol (Warsz) 2022; 82:346-358. [PMID: 35285510 DOI: 10.5603/fm.a2022.0025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 02/03/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND The aim of this study is to assess the validity of whether the difference in dental age between 2009 to 2011 and 2021 is affected by environmental factors such as environmental pollution, floating population, and dietary habits. Demirjian and Willems dental age estimation methods were conducted for a Han population of children aged 8 to 14 in Shanghai, China. A total of 1,259 digital panorama radiographs of children aged 8.00-14.99 was estimated. All digital panorama radiographs were estimated using the Demirjian and Willems methods. MATERIALS AND METHODS Both 2009 to 2011 and 2021 were statistically analyzed by paired t-tests. The results show that the Demirjian method overestimates 2009 to 2011 and underestimates 2021 than children's chronological age. According to the Willms method, males are overestimated and females are underestimated from 2009 to 2011, and both genders were underestimated in 2021. CONCLUSIONS In conclusion, the difference in dental age between 2009 to 2011 and 2021 was statistically significant. Factors such as environment and dietary habits have been found to be affected by dental development. However, there are disputes among some researchers about the exact factors, so it is suggested to further study the effects of environmental factors on tooth development.
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Affiliation(s)
- K Kwon
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Pan
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Guo
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Q Ren
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Yang
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Tao
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F Ji
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Ren Q, Zhou Y, Yan M, Zheng C, Zhou G, Xia X. Imaging-guided percutaneous transthoracic needle biopsy of nodules in the lung base: fluoroscopy CT versus cone-beam CT. Clin Radiol 2022; 77:e394-e399. [DOI: 10.1016/j.crad.2022.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 02/02/2022] [Indexed: 01/08/2023]
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Ren Q, Huang PY, Liu Y, Liao WK, Zhou ZX, Zhao CS. SYNTHESIS, CRYSTAL STRUCTURE, AND DFT STUDY OF 4-(2-CHLOROBENZYL)-1-(5-NITRO-2-(PYRROLIDIN-1-YL)PHENYL)- [1,2,4]TRIAZOLO[4,3-a]QUINAZOLIN-5(4H)-ONE. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621090171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu Y, Zheng Z, Deng H, Ren Q, Zhou Z, Zhao C, Chai H. SYNTHESIS AND CHARACTERIZATION OF A NEW COMPOUND 4-(2-CHLOROBENZYL)IMIDAZO[1,2-a] QUINAZOLIN-5(4H)-ONE: DFT STUDY, CRYSTAL STRUCTURE, MEP, AND HOMO–LUMO VALUES. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621080163] [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: 11/23/2022]
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Zhao X, Chen L, Ren Q, Wu Z, Fang S, Jiang Y, Chen Y, Zhong Y, Wang D, Wu J, Zhang G. Potential Applications in Sewage Bioremediation of the Highly Efficient Pyridine-Transforming Paenochrobactrum sp. APPL BIOCHEM MICRO+ 2021. [DOI: 10.1134/s0003683821030145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Li SM, Wang YA, Liu W, Wu ZY, Chen L, Cai XL, Zhang R, Yang WJ, Liu Y, Ma YM, Gong SQ, Zhang SM, Ren Q, Han XY, Ji LN. [Urinary retinol binding protein and β 2-microglobulin were associated with urinary albumin to creatinine ratio and renal function in hospitalized diabetic patients]. Zhonghua Nei Ke Za Zhi 2021; 60:438-445. [PMID: 33906273 DOI: 10.3760/cma.j.cn112138-20200515-00483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the associations of urinary retinol binding protein (RBP) and β2-microglobulin (β2-MG) with urinary albumin to creatinine ratio (UACR) and renal function in hospitalized patients with type 2 diabetes mellitus (T2DM). Methods: A total of 1 030 Chinese patients with T2DM were included in this study. The subjects were divided into the UACR normal group (<30 mg/g), microalbuminuria group (30-300 mg/g) and macroalbuminuria group (>300 mg/g). Patients with normal UACR were further divided into two groups according to the estimated glomerular filtration rate (eGFR): the eGFR low group (<90 ml·min-1·1.73m-2) and the normal eGFR group (≥90 ml·min-1·1.73m-2). Urine RBP and β2-MG levels among the groups were compared. Multiple linear regression analyses were applied to evaluate risk factors of urine RBP and β2-MG. Results: In all patients (n=1 030), urine RBP and β2-MG increased gradually with the increase of UACR across the three groups, the proportions of abnormal urine RBP (>0.7 mg/L) and β2-MG (>370 μg/L) in these groups were 3.8%, 8.5%, 39.0% (P<0.001), and 12.9%, 26.7%, 46.8% (P<0.001), respectively. In the UACR normal group (n=788), 12.2% of the patients were with eGFR<90 ml·min-1·1.73m-2. The proportion of abnormal β2-MG (>370 μg/L) was higher in the eGFR low group than that in the eGFR normal group (29.2% vs. 10.7%, P<0.001). Multivariate linear stepwise regression analyses were performed using natural logarithm of urine RBP or β2-MG as dependent variable, and showed that urine RBP was independently associated with UACR (β=0.0005, P<0.001), serum creatinine (β=0.006, P<0.001) and glycosylated hemoglobin A1c (β=0.050, P=0.001), and β2-MG was independently correlated with UACR (β=0.000 4, P<0.001), serum creatinine (β=0.011, P<0.001), systolic blood pressure (β=0.005, P=0.031) and fasting blood-glucose (β=0.027, P=0.046). Conclusions: Urine RBP and β2-MG are positively associated with high UACR and impaired renal function in T2DM patients, and these changes could occur before UACR and eGFR turned out to be abnormal. It is recommended that urine RBP and β2-MG be detected as early as possible to identify diabetic kidney disease in patients with normal UACR and eGFR.
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Affiliation(s)
- S M Li
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - Y A Wang
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - W Liu
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - Z Y Wu
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - L Chen
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - X L Cai
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - R Zhang
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - W J Yang
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - Y Liu
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - Y M Ma
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - S Q Gong
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - S M Zhang
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - Q Ren
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - X Y Han
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
| | - L N Ji
- Departments of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing 100044, China
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Ren Q, Wang XJ, Zhao YQ, Xu LQ, Yu HW, Ma AJ, Zheng WG. Thermo-Responsive Shape Memory Behavior of Methyl Vinyl Silicone Rubber/Olefin Block Copolymer Blends via Co-Crosslinking. INT POLYM PROC 2021. [DOI: 10.1515/ipp-2020-3927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Shape memory polymers (SMPs) are developed by blending and cross-linking polymers which include crystalline domains and cross-linked networks. In this paper, we describe the morphology, thermal and shape memory behavior of methyl vinyl silicone rubber (MVMQ)/olefin block copolymer (OBC) blends prepared by a melt-blending and chemical cross-linking method. MVMQ without crystalline domains could not hold its temporary shape. After introducing the OBC, the obtained blends exhibited excellent dual shape memory properties. The cross-linking networks of MVMQ acted as reversible domains, while crystalline regions of OBC worked as fixed domains. When the blending ratio of MVMQ/OBC was 50/ 50, the blend had both a high shape fixity ratio and shape recovery ratio.
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Affiliation(s)
- Q. Ren
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences , Ningbo , PRC
- University of Chinese Academy of Sciences , Beijing , PRC
| | - X. J. Wang
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences , Ningbo , PRC
- School of Materials Science and Chemical Engineering, Xi’an Technological University , Xi’an , PRC
| | - Y. Q. Zhao
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences , Ningbo , PRC
| | - L. Q. Xu
- School of Material Science and Chemical Engineering, Ningbo University , Ningbo , PRC
| | - H. W. Yu
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences , Ningbo , PRC
| | - A. J. Ma
- School of Materials Science and Chemical Engineering, Xi’an Technological University , Xi’an , PRC
| | - W. G. Zheng
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences , Ningbo , PRC
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Jiao JL, Zhang HP, Huang Q, Wang W, Sinclair R, Wang G, Ren Q, Lin GT, Huq A, Zhou HD, Li MZ, Ma J. Orbital competition of Mn 3+ and V 3+ ions in Mn 1+x V 2-x O 4. J Phys Condens Matter 2021; 33:134002. [PMID: 33527912 DOI: 10.1088/1361-648x/abd9a1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The structural and magnetic properties of Mn1+x V2-x O4 (0 < x ⩽ 1) have been investigated by the heat capacity, magnetization, x-ray diffraction and neutron diffraction measurements, and a phase diagram of temperature versus composition was built up. For x ⩽ 0.3, a cubic-to-tetragonal (c > a) phase transition was observed. For x > 0.3, the system maintained the tetragonal lattice. Although the collinear and noncollinear magnetic transitions of V3+ ions were obtained in all compositions, the canting angles between the V3+ ions decreased with Mn3+-doping, and the ordering of the Mn3+ ions was only observed as x > 0.4. In order to study the dynamics of the ground state, the first principles simulation was applied to analyze not only the orbital effects of Mn2+, Mn3+, and V3+ ions, but also the related exchange energies.
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Affiliation(s)
- J L Jiao
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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Sun ZB, Li SD, Ren Q, Xu JL, Lu X, Sun MH. Biology and applications of Clonostachys rosea. J Appl Microbiol 2020; 129:486-495. [PMID: 32115828 DOI: 10.1111/jam.14625] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [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: 09/21/2019] [Revised: 02/24/2020] [Accepted: 02/26/2020] [Indexed: 01/07/2023]
Abstract
Clonostachys rosea is a promising saprophytic filamentous fungus that belongs to phylum Ascomycota. Clonostachys rosea is widespread around the world and exists in many kinds of habitats, with the highest frequency in soil. As an excellent mycoparasite, C. rosea exhibits strong biological control ability against numerous fungal plant pathogens, nematodes and insects. These behaviours are based on the activation of multiple mechanisms such as secreted cell-wall-degrading enzymes, production of antifungal secondary metabolites and induction of plant defence systems. Besides having significant biocontrol activity, C. rosea also functions in the biodegradation of plastic waste, biotransformation of bioactive compounds, as a bioenergy sources and in fermentation. This mini review summarizes information about the biology and various applications of C. rosea and expands on its possible uses.
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Affiliation(s)
- Z-B Sun
- School of Light Industry, Beijing Technology and Business University, Beijing, China.,Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - S-D Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Q Ren
- School of Light Industry, Beijing Technology and Business University, Beijing, China
| | - J-L Xu
- School of Light Industry, Beijing Technology and Business University, Beijing, China
| | - X Lu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - M-H Sun
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Ren Q, Zhang CY, Ma XF, Cheng RZ, Bian XY, Xiao XL, Liu XZ, Zhou HF. [Spectomycin B1 induces VEGFR2 de-SUMO modification to inhibit angiogenesis in nasopharyngeal carcinoma]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 33:1181-1184. [PMID: 31914270 DOI: 10.13201/j.issn.1001-1781.2019.12.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Indexed: 11/12/2022]
Abstract
Objective:To explore the new mechanism of spectomycin B1 in inhibiting angiogenesis of nasopharyngeal carcinoma and to provide a theoretical basis for targeted gene therapy of nasopharyngeal carcinoma. Method:Human nasopharyngeal carcinoma CNE1 cells were divided into two groups, the control group and spectomycin B1 group. Western blot was used to detect the expression levels of small ubiquitin-related modified protein(SUMO) 1 and vascular endothelial growth factor receptor 2(VEGFR2). The angiogenesis assay was used to detect the angiogenic ability of CNE1 cells, and the apoptosis was detected by flow cytometry. The model of nasopharyngeal carcinoma-bearing mice was established, spectomycin B1 was administered, tumor volume and weight were measured, and protein expression of CD31 was detected by immunohistochemistry and microvessel density was compared. Result:Spectomycin B1 could reduce deSUMOylation of VEGFR2 protein by 4.05 times, significantly reduce the angiogenic ability of CNE1 cells, and increase the apoptosis rate by 20.68%. In the tumor-bearing mouse model, spectomycin B1 treatment could inhibit subcutaneous tumor growth rate and weight, and the blood vessel density decreased by 40.04%. Conclusion:Spectomycin B1 can inhibit neovascularization of nasopharyngeal carcinoma by inducing deSUMOylation of VEGFR2 protein.
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Affiliation(s)
- Q Ren
- Department of Otorhinolaryngology,the Fifth Central Hospital of Tianjin,Tianjin,300450,China
| | - C Y Zhang
- Department of Pharmacy,Tianjin Binhai New Area Hospital of Traditional Chinese Medicine
| | - X F Ma
- Central Laboratory,the Fifth Central Hospital of Tianjin
| | - R Z Cheng
- Department of Pharmacy,Tianjin Binhai New Area Hospital of Traditional Chinese Medicine
| | - X Y Bian
- Central Laboratory,the Fifth Central Hospital of Tianjin
| | - X L Xiao
- Central Laboratory,the Fifth Central Hospital of Tianjin
| | - X Z Liu
- Central Laboratory,the Fifth Central Hospital of Tianjin
| | - H F Zhou
- Department of Otorhinolaryngology,Tianjin Medical University General Hospital
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Ren Q, Lin P, Wang Q, Zhang B, Feng L. Chronic peripheral ghrelin injection exerts antifibrotic effects by increasing growth differentiation factor 15 in rat hearts with myocardial fibrosis induced by isoproterenol. Physiol Res 2019; 69:439-450. [PMID: 31852204 DOI: 10.33549/physiolres.934183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
This study aimed to investigate the anti-fibrotic effects of ghrelin in isoproterenol (ISO)-induced myocardial fibrosis and the underlying mechanism. Sprague-Dawley rats were randomized to control, ISO, and ISO + ghrelin groups. ISO (2 mg/kg per day, subcutaneous) or vehicle was administered once daily for 7 days, then ghrelin (100 microg/kg per day, subcutaneous) was administered once daily for the next 3 weeks. Ghrelin treatment greatly improved the cardiac function of ISO-treated rats. Ghrelin also decreased plasma brain natriuretic peptide level and ratios of heart weight to body weight and left ventricular weight to body weight. Ghrelin significantly reduced myocardial collagen area and hydroxyproline content, accompanied by decreased mRNA levels of collagen type I and III. Furthermore, ghrelin increased plasma level of growth differentiation factor 15 (GDF15) and GDF15 mRNA and protein levels in heart tissues, which were significantly decreased with ISO alone. The phosphorylation of Akt at Ser473 and GSK-3beta at Ser9 was decreased with ISO, and ghrelin significantly reversed the downregulation of p-Akt and p-GSK-3beta. Mediated by GDF15, ghrelin could attenuate ISO-induced myocardial fibrosis via Akt-GSK-3beta signaling.
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Affiliation(s)
- Q Ren
- Geriatric Department of the Third Hospital of Hangzhou, Hangzhou, China.
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15
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Yang B, Chen H, Gao H, Ren Q, Zhang H, Chen W. Genetic determinates for conjugated linolenic acid production in Lactobacillus plantarum ZS2058. J Appl Microbiol 2019; 128:191-201. [PMID: 31561280 DOI: 10.1111/jam.14466] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 02/20/2019] [Revised: 08/28/2019] [Accepted: 09/23/2019] [Indexed: 12/17/2022]
Abstract
AIMS To investigate the genetic determinates for conjugated linolenic acid (CLNA) production in Lactobacillus plantarum ZS2058, a high CLNA producer. METHODS AND RESULTS After culturing with α-linolenic acid (ALA) in the medium, the fatty acid compositions of supernatant fluid and cell pellets were analysed via GC-MS. cis9,trans11,cis15-CLNA was identified to be the predominant isomer. And during CLNA production, 10-hydroxy-cis12-cis15-octadecenoic acid (10-HOEA) and 10-oxo-cis12-cis15-octadecenoic acid (10-OXOA) were accumulated. The E. coli recombinants harbouring genes encoding myosin-cross-reactive antigen (MCRA), short-chain dehydrogenase/oxidoreductase (DH) and acetoacetate decarboxylase (DC), respectively, were analysed for their roles in CLNA production. The results indicated that MCRA converted ALA to 10-HOEA, following converted to 10-OXOA by DH. While with the combination of three recombinants, ALA could be transformed into CLNA plus 10-HOEA and 10-OXOA. When the three genes were deleted, none of the L. plantarum ZS2058 knockout mutants could produce any CLNA, after complementation, and all the complementary mutants recovered the CLNA-production ability at similar levels as the wild strain. CONCLUSIONS Lactobacillus plantarum ZS2058 produced CLNA from ALA with 10-HOEA and 10-OXOA as intermediates. The triple-component isomerase of MCRA, DH and DC was the unique genetic determinant for CLNA generation. SIGNIFICANCE AND IMPACT OF THE STUDY The current results firstly provided conclusive evidence that the triple-component isomerase complex was shared by both CLA and CLNA production in lactobacilli.
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Affiliation(s)
- B Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - H Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - H Gao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Q Ren
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - H Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu, China.,Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch, Wuxi, Jiangsu, China
| | - W Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu, China.,Beijing Innovation Center of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, China
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Ren Q, Xie H, Chen Y, Wu C, Li H, Lu Y, Lin N, Li X, Yuan W, Yang Y, Jin H, Sun J. OR68: Effects of a Micronutrient Pack on Micronutrient Status, Homocysteine Level, Oxidative Stress Biomarkers and Functions in Institutional Older Adults: A Multicenter Randomized, Double-Blind, Placebo-Controlled Study. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32540-3] [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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17
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Abstract
1. MicroRNAs are small noncoding RNA molecules that play crucial roles in gene expression. However, the comparative profiling of testicular and ovarian microRNAs in birds are rarely reported, particularly in pigeon.2. In this study, Illumina next-generation sequencing technology was used to sequence miRNA libraries of the gonads from six healthy adult utility pigeons. A total of 344 conserved known miRNAs and 32 novel putative miRNAs candidates were detected. Compared with those of ovaries, 130 differentially expressed (DE) miRNAs were identified in the testes. Among them, 70 miRNAs showed down-regulation in the ovaries, while another 60 miRNAs were up-regulated.3. Combining the results of the expression of target gene measurements and pathway enrichment analyses, it was revealed that some DEmiRNAs from the gonad samples involved in sexual differentiation and development (such as cli-miR-210-3p and cli-miR-214-3p) could down-regulate AR (androgen receptor). Cli-miR-181b-5p, cli-miR-9622-3p and cli-miR-145-5p were highly expressed in both the ovaries and testes, which could co-target HOXC9, and were related to regulation of primary metabolic processes. KEGG enrichment analysis showed that DEmiRNAs may play biological and sex-related roles in pigeon gonads.4. The expression profiles of testicular and ovarian miRNA in adult pigeon gonads are presented for the first time, and the findings may contribute to a better understanding of gonadal expression in poultry.
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Affiliation(s)
- L Jiang
- The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu, China.,The Provincial Key Laboratory of the Conservation and Exploitation Research of Biological Resources in Anhui, College of Life Sciences, Anhui Normal University, Wuhu, China
| | - D Bi
- The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu, China
| | - H Ding
- The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu, China
| | - Q Ren
- The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu, China.,State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, China
| | - P Wang
- The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu, China
| | - X Kan
- The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu, China.,The Provincial Key Laboratory of the Conservation and Exploitation Research of Biological Resources in Anhui, College of Life Sciences, Anhui Normal University, Wuhu, China
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18
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Ren Q, Liu FT, Zhang CY, Li LL, Cheng RZ, Liu XZ, Liu Q, Zhou HF. [Hypoxia increases chemotherapy resistance in nasopharyngeal carcinoma via inducing CDK6 deSUMOylation]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:524-528. [PMID: 31315360 DOI: 10.3760/cma.j.issn.1673-0860.2019.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the mechanism of chemotherapy resistance in nasopharyngeal carcinoma under hypoxic conditions through the perspective of protein SUMOylation modification. Methods: Cobalt chloride (CoCl(2)) was used to establish the hypoxic model of human nasopharyngeal carcinoma CNE1 cells. Then, the cell cycle was detected by flow cytometry, and the expression level of small ubiquitin-related modifier(SUMO) and cyclin-dependent kinase 6 (CDK6) proteins were detected by western blotting. MTT assay was used to determine the median lethal dose (IC(50)) of cancer cells against cisplatin, and enzyme-linked immunosorbent assay (ELISA) was used to determine lactate dehydrogenase (LDH) level. Results: The cell cycle of CNE1 induced by hypoxia was arrested in G0/G1 phase.The results of Western blot showed that the protein expression level of CDK6 in CNE1 cells was lower than that in the control group (0.83±0.25 vs. 0.43±0.21, t=14.67, P=0.003). The protein level of conjugated SUMO1 was significantly lower than that in the control group (2.69±0.48 vs. 1.38±0.31, t=17.22, P=0.001), while the level of free SUMO1 protein was significantly higher than that in the control group (2.01±0.43 vs. 2.60±0.59, t=15.45, P=0.002).The LC50 of CNE1 cells in the control group was significantly lower than that in the hypoxic group (29.44 μg/ml vs. 97.72 μg/ml, t=12.79, P=0.001). After CNE1 cells received 50 μg/ml cisplatin for 48 h, the LDH content in the supernatant of the control group was significantly higher than that in the hypoxic group ((541.49±64.59) ng/ml vs. (234.67±41.03) ng/ml, t=11.94, P=0.007)). The apoptosis rate of CNE1 cells in the control group was significantly higher than that in the hypoxic group ((76.64±5.37)% vs. (32.84±4.77) ng/ml, t=8.49, P=0.003)). Conclusion: Hypoxia can dissociate the covalent modification of CDK6 and SUMO1, inhibit cell cycle and increase the chemotherapy resistance of nasopharyngeal carcinoma.
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Affiliation(s)
- Q Ren
- Department of Otorhniolaryngology, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - F T Liu
- Clinical Medical College of Tianjin Medical University, Tianjin 300070, China
| | - C Y Zhang
- Department of Pharmacy, Tianjin Binhai New Area Hospital of Traditional Chinese Medicine, Tianjin 300450, China
| | - L L Li
- Department of Bone and Soft Tissue Oncology, Tianjin Medical University Cancer Hospital, Tianjin 300060, China
| | - R Z Cheng
- Department of Pharmacy, Tianjin Binhai New Area Hospital of Traditional Chinese Medicine, Tianjin 300450, China
| | - X Z Liu
- Central Laboratory, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Q Liu
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - H F Zhou
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin 300070, China
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Lin T, Peng C, Liu S, Huang H, Wang Z, Guo C, Ren Q, Fang X, Hong H, Li F, Ying Tian Y. A PROSPECTIVE STUDY ON THE CIRCULATION AND CENTRAL NERVOUS SYSTEM AFTERPRIMARY CENTRAL NERVOUS SYSTEM B CELL LYMPHOMATREATMENT WITH RITUXIMAB. Hematol Oncol 2019. [DOI: 10.1002/hon.139_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- T. Lin
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - C. Peng
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - S. Liu
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - H. Huang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - Z. Wang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - C. Guo
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - Q. Ren
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - X. Fang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - H. Hong
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - F. Li
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
| | - Y. Ying Tian
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine, Guangzhou, China; Guangzhou China
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Lin T, Ren Q, Huang H, Li X, Hong H, Wang Z, Fang X, Guo C, Li F, Zhang L, Yao Y, Chen Z, Huang Y, Li Z, Cai Q, Tian Y, Wang H, Lin X, Fan W, Zheng L, Lin S, Liu Q. A PROSPECTIVE STUDY OF MRI AND PET/CT-GUIDED THERAPY FOR IMPROVING SURVIVAL IN UPPER AERODIGESTIVE TRACT NATURAL KILLER/T-CELL LYMPHOMA, NASAL TYPE. Hematol Oncol 2019. [DOI: 10.1002/hon.85_2630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- T. Lin
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Q. Ren
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - H. Huang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - X. Li
- Department of Medical Oncology; The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China; Guangzhou China
| | - H. Hong
- Department of Medical Oncology; Sun Yat-sen Memorial Hospital; Guangzhou China
| | - Z. Wang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - X. Fang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - C. Guo
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - F. Li
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - L. Zhang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Y. Yao
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Z. Chen
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Y. Huang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Z. Li
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Q. Cai
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Y. Tian
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - H. Wang
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - X. Lin
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - W. Fan
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - L. Zheng
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - S. Lin
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
| | - Q. Liu
- Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in Southern China; Collaborative Innovation Center of Cancer Medicine; Guangzhou China
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21
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Xing L, Wang J, Li L, Ma Z, Hu C, Zhang H, Shan L, Chen Z, Zhang J, Zhou Q, Gao S, Ma X, Sun P, Ren Q, Wu M, Wu J, Li J, Yao J, Ma H, Wang W, Yao W, Wang D, Kang J, Li G, Wang X, Zhu W, Wang J, Yu J. MA02.06 A Randomized, Double-Blind, Placebo-Controlled Trial of Chemotherapy Combined with Yangzheng Xiaoji in Advanced NSCLC. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Xie X, Yang Y, Ren Q, Ding X, Bao P, Yan B, Yan X, Han J, Yan P, Qiu Q. Accumulation of deleterious mutations in the domestic yak genome. Anim Genet 2018; 49:384-392. [DOI: 10.1111/age.12703] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2018] [Indexed: 12/19/2022]
Affiliation(s)
- X. Xie
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
| | - Y. Yang
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
| | - Q. Ren
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
| | - X. Ding
- Key Laboratory of Yak Breeding Engineering Gansu Province; Lanzhou Institute of Husbandry and Pharmaceutical Sciences; Chinese Academy of Agricultural Science; Lanzhou 730050 China
| | - P. Bao
- Key Laboratory of Yak Breeding Engineering Gansu Province; Lanzhou Institute of Husbandry and Pharmaceutical Sciences; Chinese Academy of Agricultural Science; Lanzhou 730050 China
| | - B. Yan
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
| | - X. Yan
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
| | - J. Han
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
| | - P. Yan
- Key Laboratory of Yak Breeding Engineering Gansu Province; Lanzhou Institute of Husbandry and Pharmaceutical Sciences; Chinese Academy of Agricultural Science; Lanzhou 730050 China
| | - Q. Qiu
- State Key Laboratory of Grassland Agro-Ecosystem; School of Life Sciences; Lanzhou University; Lanzhou 730000 China
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Cui W, Ren Q, Zhi YS, Zhao XL, Wu ZP, Li PG, Tang WH. Optimization of Growth Temperature of β-Ga₂O₃ Thin Films for Solar-Blind Photodetectors. J Nanosci Nanotechnol 2018; 18:3613-3618. [PMID: 29442874 DOI: 10.1166/jnn.2018.14692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Monoclinic gallium oxide thin films were deposited on c-plane sapphire substrates at various substrate temperatures ranging from 450 °C to 700 °C by radio frequency magnetron sputtering technology. X-ray diffraction results showed that the deposited β-Ga2O3 films were oriented at ( 2 ¯ 01) direction. As the substrate temperature increased, the intensity of β-Ga2O3 peaks increased and bandgap decreased accordingly. Metal/semiconductor/metal structured solar-blind photodetectors based on β-Ga2O3 thin films growing at various substrate temperatures had been fabricated. The growth temperatures of thin films had no obvious influence on dark current and response to 365 nm light illuminations. The photoelectric properties such as responsivity and response speed of the thin films to 254 nm light illuminations were growth temperature dependent. At an applied bias of 50 V, the photodetectors prepared with 450 °C grown film had the highest responsivity of 2.18 A/W, and the photodetectors prepared with 700 °C grown film had the shortest rising time of 0.95 s under 254 nm light illuminations.
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Affiliation(s)
- W Cui
- Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - Q Ren
- Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - Y S Zhi
- Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - X L Zhao
- Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - Z P Wu
- Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - P G Li
- Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018 Zhejiang, China
| | - W H Tang
- Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
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Ren Q, Cai M, Zhang K, Ren W, Su Z, Yang T, Sun T, Wang J. Effects of bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF) release from polylactide-poly (ethylene glycol)-polylactide (PELA) microcapsule-based scaffolds on bone. ACTA ACUST UNITED AC 2017; 51:e6520. [PMID: 29211249 PMCID: PMC5711005 DOI: 10.1590/1414-431x20176520] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 03/29/2017] [Accepted: 08/31/2017] [Indexed: 01/11/2023]
Abstract
Multiple growth factors can be administered to mimic the natural process of bone healing in bone tissue engineering. We investigated the effects of sequential release of bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF) from polylactide-poly (ethylene glycol)-polylactide (PELA) microcapsule-based scaffolds on bone regeneration. To improve the double emulsion/solvent evaporation technique, VEGF was encapsulated in PELA microcapsules, to which BMP-2 was attached. The scaffold (BMP-2/PELA/VEGF) was then fused to these microcapsules using the dichloromethane vapor method. The bioactivity of the released BMP-2 and VEGF was then quantified in rat mesenchymal stem cells (rMSCs). Immunoblotting analysis showed that BMP-2/PELA/VEG promoted the differentiation of rMSCs into osteoblasts via the MAPK and Wnt pathways. Osteoblast differentiation was assessed through alkaline phosphatase expression. When compared with simple BMP-2 plus VEGF group and pure PELA group, osteoblast differentiation in BMP-2/PELA/VEGF group significantly increased. An MTT assay indicated that BMP-2-loaded PELA scaffolds had no adverse effects on cell activity. BMP-2/PELA/VEG promoted the differentiation of rMSCs into osteoblast via the ERK1/2 and Wnt pathways. Our findings indicate that the sequential release of BMP-2 and VEGF from PELA microcapsule-based scaffolds is a promising approach for the treatment of bone defects.
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Affiliation(s)
- Q Ren
- Emergency Department, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - M Cai
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia, China
| | - K Zhang
- Emergency Department, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - W Ren
- Emergency Department, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Z Su
- Emergency Department, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - T Yang
- Emergency Department, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - T Sun
- Emergency Department, Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - J Wang
- Department of Cardiothoracic Surgery, Third Affiliated Hospital of Inner Mongolia Medical University, Baotou, Inner Mongolia, China
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Chen JL, Ren Q, Li JQ. [A case report of Cushing's syndrome in pregnancy]. Zhonghua Nei Ke Za Zhi 2017; 56:851-853. [PMID: 29136718 DOI: 10.3760/cma.j.issn.0578-1426.2017.11.016] [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: 06/07/2023]
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26
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Yang B, Ren Q, Zhang JC, Chen QX, Hashimoto K. Altered expression of BDNF, BDNF pro-peptide and their precursor proBDNF in brain and liver tissues from psychiatric disorders: rethinking the brain-liver axis. Transl Psychiatry 2017; 7:e1128. [PMID: 28509900 PMCID: PMC5534963 DOI: 10.1038/tp.2017.95] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/22/2017] [Accepted: 03/28/2017] [Indexed: 12/11/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) has a role in the pathophysiology of psychiatric disorders. The precursor proBDNF is converted to mature BDNF and BDNF pro-peptide, the N-terminal fragment of proBDNF; however, the precise function of these proteins in psychiatric disorders is unknown. We sought to determine whether expression of these proteins is altered in the brain and peripheral tissues from patients with psychiatric disorders. We measured protein expression of proBDNF, mature BDNF and BDNF pro-peptide in the parietal cortex, cerebellum, liver and spleen from control, major depressive disorder (MDD), schizophrenia (SZ) and bipolar disorder (BD) groups. The levels of mature BDNF in the parietal cortex from MDD, SZ and BD groups were significantly lower than the control group, whereas the levels of BDNF pro-peptide in this area were significantly higher than controls. In contrast, the levels of proBDNF and BDNF pro-peptide in the cerebellum of MDD, SZ and BD groups were significantly lower than controls. Moreover, the levels of mature BDNF from the livers of MDD, SZ and BD groups were significantly higher than the control group. The levels of mature BDNF in the spleen did not differ among the four groups. Interestingly, there was a negative correlation between mature BDNF in the parietal cortex and mature BDNF in the liver in all the subjects. These findings suggest that abnormalities in the production of mature BDNF and BDNF pro-peptide in the brain and liver might have a role in the pathophysiology of psychiatric disorders, indicating a brain-liver axis in psychiatric disorders.
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Affiliation(s)
- B Yang
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Q Ren
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
| | - J-c Zhang
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
| | - Q-X Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - K Hashimoto
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
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Ren Q, Ju W, Wang D, Guo Z, Chen M, He X. Multidisciplinary Cooperation in a Simultaneous Combined Liver and Kidney Transplantation Patient of Primary Hyperoxaluria 1. JNMA J Nepal Med Assoc 2017; 56:175-178. [PMID: 28598458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023] Open
Abstract
Primary hyperoxaluria type 1 is an autosomal recessive hereditary glyoxylate metabolism disorder characterized by excessive production of oxalate, caused by the deficiency of liver specific peroxisomal enzyme: alanineglyoxylate aminotransferase. For patients with end-stage renal disease, combined liver and kidney transplantation was needed. This report describes one patient, with a diagnosis of end-stage renal disease and primary hyperoxaluria 1 confirmed by PCR and direct sequencing with genomic DNA, received the simultaneous combined liver and kidney transplantation after seven months' waiting. However, there were several complications observed post surgery, such as protracted bleeding, common bile duct anastomotic stenosis, biliary calculi and recurrence of urolithiasis. All these were well solved by relevant department, and finally a satisfactory outcome was achieved. Multidisciplinary cooperation plays an important role on the PH1 patient management, especially when multiple complications are encountered.
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Affiliation(s)
- Q Ren
- Department of hepatobiliary and pancreatic surgery, Peking University Shenzhen Hospital, Shenzhen China
| | - W Ju
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - D Wang
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Z Guo
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - M Chen
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - X He
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Ren Q, Shao Y, Yu W. Pre-warming the double-lumen endobronchial tubes to facilitate intubation in incubator. Br J Anaesth 2017; 118:140-141. [DOI: 10.1093/bja/aew418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhou L, Cai X, Zhu Y, Liu W, Gong S, Zhang S, Ma Y, Zhang B, Liu Y, Li M, Zhou X, Luo Y, Gao L, Zhang X, Chen J, Wu J, Chen L, Zhang R, Ren Q, Zhang F, Yang W, Han X, Ji L. Serum leptin level is associated with glycaemic control in newly diagnosed type 2 diabetes patients: A 1-year cohort study. Diabetes & Metabolism 2016; 42:457-461. [DOI: 10.1016/j.diabet.2016.05.011] [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] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/15/2016] [Accepted: 05/17/2016] [Indexed: 01/20/2023]
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Ren Q, Xia T. Application of dispersive liquid—liquid microextraction for the analysis of organophosphorus pesticides in Hawthorn (Crataegus pinnatifidavar.major) juice samples. ACTA CHROMATOGR 2016. [DOI: 10.1556/1326.2016.28.3.10] [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: 11/19/2022]
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31
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Hu H, Bai X, Wen A, Shah A, Dai S, Ren Q, Wang S, He S, Wang L. Assessment of interactions between glutamine and glucose on meat quality, AMPK, and glutamine concentrations in pectoralis major meat of broilers under acute heat stress. J APPL POULTRY RES 2016. [DOI: 10.3382/japr/pfw021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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32
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Ren Q, Ma M, Hashimoto K. Current Status of Substance Abuse in East Asia and Therapeutic Prospects. East Asian Arch Psychiatry 2016; 26:45-51. [PMID: 27377485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The abuse of drugs, including opioids and stimulants, is a major public health problem worldwide, including in East Asia. Nonetheless, there are no pharmacological treatments for many psychiatric or neurological symptoms associated with that abuse. Abused drugs exert several detrimental effects on structural plasticity in brain regions associated with reward circuits. Understanding the molecular mechanisms that underlie this structural plasticity in brain neurons will aid in the development of novel therapeutic drugs for substance abuse. In this review, we discuss recent topics in substance abuse in East Asia and the therapeutic drugs available. Finally, we discuss potential therapeutic signalling pathways involved in long-term changes to structural plasticity in the brain after repeated administration of opioids and stimulants.
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Affiliation(s)
- Q Ren
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
| | - M Ma
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
| | - K Hashimoto
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
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Yang W, Cheng Z, Yu J, Yang H, Liu Z, Ren Q, Xu L. Multicentre study to evaluate the clinical effects of laparoscopic uterine artery occlusion in combination with myomectomy to treat symptomatic uterine leiomyomas. Eur J Obstet Gynecol Reprod Biol 2016; 204:9-15. [PMID: 27471836 DOI: 10.1016/j.ejogrb.2016.05.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 03/30/2016] [Accepted: 05/17/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Uterine artery occlusion is often used to treat symptomatic uterine myomas, as this is a minimally invasive approach. However, alternative methods for uterus-sparing therapy are in development. This study aimed to compare the clinical effects of laparoscopic uterine artery occlusion (LUAO) in combination with laparoscopic myomectomy (LM) with LM alone for the management of symptomatic uterine leiomyomas. STUDY DESIGN This multicentre study was a retrospective controlled investigation. In total, 618 patients with symptomatic uterine myomas from six hospitals in Eastern China underwent LUAO+LM or LM alone between June 2011 and December 2012. Operative time, blood loss, transfusion, highest temperature, postoperative hospital stay, complications and follow-up results were compared between the two groups. RESULTS Complete clinical data were available for 504 patients. Among these, 324 patients underwent LUAO+LM and 180 patients underwent LM alone. Mean±standard deviation blood loss, transfusion, highest peri-operative temperature and duration of hospital stay were significantly lower in the LUAO+LM group compared with the LM group (83.61±53.70ml vs 109±58.43ml, 1.85% vs 6.11%, 37.6±0.40°C vs 37.9±0.45°C and 5.11±0.62 days vs 6.10±0.83 days, respectively). The mean duration of follow-up was 38.97±5.82 months in the LUAO+LM group and 37.30±2.25 months in the LM group (p>0.05). The relief of abnormal uterine bleeding, reduction of uterine volume and recurrence of myomas were more remarkable in the LUAO+LM group than the LM group (97.22% vs 83.75%, 62.42% vs 51.83% and 3.47% vs 10.63%, respectively). CONCLUSIONS LUAO in combination with LM was associated with higher surgical quality, greater relief of abnormal symptoms and less recurrence of myomas compared with LM alone. LUAO in combination with LM is recommended for women with symptomatic uterine myomas who wish to preserve their uterus.
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Affiliation(s)
- W Yang
- Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China; Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, China
| | - Z Cheng
- Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China; Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, China.
| | - J Yu
- Department of Obstetrics and Gynaecology, Affiliated Hospital, Jiangnan University, Jiangsu Province, China
| | - H Yang
- Department of Obstetrics and Gynaecology, Changshu No. 1 People's Hospital, Jiangsu Province, China
| | - Z Liu
- Department of Obstetrics and Gynaecology, Shanghai Pudong New District Zhoupu Hospital, Shanghai, China
| | - Q Ren
- Department of Obstetrics and Gynaecology, No. 1 People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - L Xu
- Department of Obstetrics and Gynaecology, Qidong People's Hospital, Jiangsu Province, China
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Cui X, Chen K, Xing H, Yang Q, Krishna R, Bao Z, Wu H, Zhou W, Dong X, Han Y, Li B, Ren Q, Zaworotko MJ, Chen B. Pore chemistry and size control in hybrid porous materials for acetylene capture from ethylene. Science 2016; 353:141-4. [DOI: 10.1126/science.aaf2458] [Citation(s) in RCA: 839] [Impact Index Per Article: 104.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 05/05/2016] [Indexed: 01/18/2023]
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Ren Q, Wang Y, Zheng Q, Ye L, Zhou XD, Zhang LL. Survey of student attitudes towards digital simulation technologies at a dental school in China. Eur J Dent Educ 2016; 21:180-186. [PMID: 27040731 DOI: 10.1111/eje.12198] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/16/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Q. Ren
- West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Y. Wang
- West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Q. Zheng
- West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - L. Ye
- West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - X. D. Zhou
- West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - L. L. Zhang
- West China Hospital of Stomatology; Sichuan University; Chengdu China
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Ren Q, Han X, Zhang S, Cai X, Ji L. Combined Influence of Genetic Variants and Gene-gene Interaction on Sulfonylurea Efficacy in Type 2 Diabetic Patients. Exp Clin Endocrinol Diabetes 2016; 124:157-62. [PMID: 27008632 DOI: 10.1055/s-0035-1564161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Q. Ren
- Department of Endocrinology and Metabolism, Peking University People’s Hospital, Peking University Diabetes Center, Beijing, China
| | - X. Han
- Department of Endocrinology and Metabolism, Peking University People’s Hospital, Peking University Diabetes Center, Beijing, China
| | - S. Zhang
- Department of Endocrinology and Metabolism, Peking University People’s Hospital, Peking University Diabetes Center, Beijing, China
| | - X. Cai
- Department of Endocrinology and Metabolism, Peking University People’s Hospital, Peking University Diabetes Center, Beijing, China
| | - L. Ji
- Department of Endocrinology and Metabolism, Peking University People’s Hospital, Peking University Diabetes Center, Beijing, China
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Meng T, Ren Q, Wang J, Shi H, Zhang S, Liu M. Association between COL9A2 Gln326Arg mutations and the development of intervertebral disc disease in a Chinese population. Genet Mol Res 2016; 15:gmr-15-04-gmr.15048958. [DOI: 10.4238/gmr15048958] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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38
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Lattuada M, Ren Q, Zuber F, Galli M, Bohmer N, Matter MT, Wichser A, Bertazzo S, Pier GB, Herrmann IK. Theranostic body fluid cleansing: rationally designed magnetic particles enable capturing and detection of bacterial pathogens. J Mater Chem B 2016; 4:7080-7086. [DOI: 10.1039/c6tb01272h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We show theoretical and experimental considerations on bacteria capturing and enrichment via magnetic separation enabling integrated diagnosis and treatment of blood stream infections.
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Affiliation(s)
- M. Lattuada
- Adolphe Merkle Institute
- University of Fribourg
- Fribourg
- Switzerland
| | - Q. Ren
- Department Materials Meet Life
- Swiss Federal Laboratories for Materials Science and Technology (Empa)
- 9014 St. Gallen
- Switzerland
| | - F. Zuber
- Department Materials Meet Life
- Swiss Federal Laboratories for Materials Science and Technology (Empa)
- 9014 St. Gallen
- Switzerland
| | - M. Galli
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - N. Bohmer
- Department Materials Meet Life
- Swiss Federal Laboratories for Materials Science and Technology (Empa)
- 9014 St. Gallen
- Switzerland
| | - M. T. Matter
- Department Materials Meet Life
- Swiss Federal Laboratories for Materials Science and Technology (Empa)
- 9014 St. Gallen
- Switzerland
| | - A. Wichser
- Department Materials Meet Life
- Swiss Federal Laboratories for Materials Science and Technology (Empa)
- 9014 St. Gallen
- Switzerland
| | - S. Bertazzo
- Department of Medical Physics and Biomedical Engineering
- University College London
- Malet Place Engineering Building
- London
- UK
| | - G. B. Pier
- Brigham and Women's Hospital
- Harvard Medical School
- Boston
- USA
| | - I. K. Herrmann
- Department Materials Meet Life
- Swiss Federal Laboratories for Materials Science and Technology (Empa)
- 9014 St. Gallen
- Switzerland
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Ding ZF, Xia SY, Xue H, Tang JQ, Ren Q, Gu W, Meng QG, Wang W. Direct visualization of the novel pathogen, Spiroplasma eriocheiris, in the freshwater crayfish Procambarus clarkii (Girard) using fluorescence in situ hybridization. J Fish Dis 2015; 38:787-794. [PMID: 25167936 DOI: 10.1111/jfd.12287] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/11/2014] [Accepted: 06/19/2014] [Indexed: 06/03/2023]
Abstract
Spiroplasma eriocheiris is the first spiroplasma strain known to be pathogenic to freshwater crustaceans. It has caused considerable economic losses both in the freshwater crayfish Procambarus clarkii (Girard) and in some other crustaceans. The monitoring of the pathogen in crustacean populations and study of its behaviour in the laboratory require the development of reliable diagnostic tools. In this article, we improved microscopic identification of S. eriocheiris by combining in situ hybridization with specific fluorescently labelled oligonucleotide probes. The established fluorescence in situ hybridization (FISH) allowed simultaneous visualization, identification and localization of S. eriocheiris in the tissues of diseased crayfish P. clarkii and exhibited low background autofluorescence and ideal signal-to-noise ratio. With the advantages of better tissue penetration, potentially more specific and stable, we designed three species-specific oligonucleotide probes utilizing the sequences of 16S-23S rRNA intergenic spacer regions (ISRs) of S. eriocheiris. Positive hybridization signals were visualized in haemocytes and connective tissues of hepatopancreas, cardiac muscle and gill from diseased crayfish. This unique distribution pattern matched the pathological changes when diagnosed by H&E staining and indicated that S. eriocheiris probably spread throughout the tissues in P. clarkii by hemokinesis. This assay will facilitate our understanding of the pathogenesis of S. eriocheiris and enhance the early diagnosis of the novel pathogen.
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Affiliation(s)
- Z F Ding
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, China
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
| | - S Y Xia
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - H Xue
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
| | - J Q Tang
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
| | - Q Ren
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - W Gu
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Q G Meng
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - W Wang
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Ren Q, Cao R, Pei X, Wang H, Hu L. SU-C-BRD-07: Three-Dimensional Dose Reconstruction in the Presence of Inhomogeneities Using Fast EPID-Based Back-Projection Method. Med Phys 2015. [DOI: 10.1118/1.4923803] [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: 11/07/2022] Open
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Zhang R, Bai W, Xiaomei F, Chi Z, Runxiao L, Ren Q, Gao C. SU-E-P-39: Characterization of Dose Impact On Different Beam Fields Size Attenuation for Elekta IGRT Couch. Med Phys 2015. [DOI: 10.1118/1.4923973] [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: 11/07/2022] Open
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Zeng H, Ren Q. FRI0380 Efficacy and Safety of Leflunomide Therapy in Lupus Nephritis:A Meta-Analysis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5566] [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: 11/04/2022]
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Ren Q, Alexander M, Samdani R, Singh B. Abstract P3-05-01: Accurate assessment of HER2 status in “triple-negative” breast cancer requires both IHC and FISH testing. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p3-05-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Triple-negative invasive breast carcinoma (TNBC) does not over-express estrogen, progesterone receptors and HER2/neu. Approximately 15% breast cancers are “triple negative” and have poor overall survival with no targeted therapeutic options. HER2 positive patients also have a poor prognosis which is markedly improved with anti-HER2 therapy. ASCO/CAP guidelines have made substantial improvement in biomarker assessment by standardizing pre-analytic, analytic and post-analytic variables. Since 2009, we have performed HER2 fluorescence in situ hybridization (FISH) analysis in addition to immunohistochemistry (IHC) on all triple negative patients in an effort to accurately assess HER2 status.
Materials and Methods: Pathology database at our institute was queried for triple negative breast cancer cases 2009-2012. 175 cases were identified with ER(SP1; Ventana)< = 1%, PR(1E2; Ventana)< = 1% and HER2 IHC (HercepTest® DAKO 2009-2011; 4B5-Ventana- 2012)< = 1+. FISH for Her2 was also performed on these cases. HER2/CEP17> = 2 was classified as HER2 positive. FISH for HER2 amplification was performed using the FDA-approved HER2 DNA Probe Kit (Vysis, Inc.). The hybridization results were recorded and analyzed by BioView Duet system (Allegro Plus Automated Scanner) with HER2 application software (BV-HER2-AF). Fisher's exact test was performed to correlate HER2 amplification with clinico-pathological parameters.
Results: 175 breast cancers were classified as “triple-negative” by IHC between 2009-2012. The patients’ age ranged from 25 to 93 years old (mean = 58); 109 were Caucasian (62%), 33 African American (19%), 9 Asian (5%) and 4 Hispanic (2%). The majority of the cases (152, 86%) were invasive ductal carcinoma. The rest include 9 cases of medullary carcinoma, 3 cases of metaplastic carcinoma, 3 cases of apocrine carcinoma, 2 cases of papillary carcinoma and 2 cases of invasive lobular carcinoma. 34 had regional lymph node (axillary) metastasis (19%) and 9 had distant metastasis (5%).
23 of the 175 “triple-negative” cases (13%) showed HER2 amplification by HER2 FISH analysis (HER2/CEP17> = 2). 14.9% (20/134) TNBC cases were FISH positive 2009-11 (HercepTest®, DAKO) and 7.3% (3/41) cases were FISH positive in 2012 (4B5, Ventana). 14 of the 23 patients were Caucasian (61%), 4 African American (17%), 2 Asian and 1 Hispanic. 20 of the 23 cases (87%) had invasive ductal carcinoma, of which 18 (78%) were poorly differentiated. 8 of the 23 cases (35%) had lymph node metastasis and 1 case had distant metastasis. No statistically significant correlation was observed between the HER2 gene amplification and clinicopathological factors analyzed, including race (P = 1), age (P = 1), tumor size (P = 0.6), pathologic stage (P = 0.6), lymph node status (P = 0.08), and Ki-67 index (P = 0.8 with 20% cutoff; P = 0.1 with 70% cutoff).
Conclusion: In this cohort, 13% TNBC were re-classified as HER2 positive by performing HER2 FISH test in addition to immunohistochemistry analysis. Rate of FISH positivity in TNBC declined over the four year study period. No clinicopathological variables are correlated with HER2 FISH amplification. These data suggest that dual testing of HER2 should be considered routinely in TNBC for accurate classification to guide therapy.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-05-01.
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Affiliation(s)
- Q Ren
- New York University School of Medicine, New York, NY
| | - M Alexander
- New York University School of Medicine, New York, NY
| | - R Samdani
- New York University School of Medicine, New York, NY
| | - B Singh
- New York University School of Medicine, New York, NY
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Ren Q, Xiao J, Han X, Luo Y, Yang W, Ji L. Rs290487 of TCF7L2 gene is not associated with type 2 diabetes in Chinese Han population: a case control study and meta-analysis. Exp Clin Endocrinol Diabetes 2013; 121:526-30. [PMID: 24002895 DOI: 10.1055/s-0033-1347199] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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] [Indexed: 10/26/2022]
Abstract
AIMS rs290487 in TCF7L2 was originally identified to be associated with type 2 diabetes in Taiwan Chinese population. However, discrepancies were noted in subsequent replicated studies. So the aim of this study is to investigate the effect of rs290487 in TCF7L2 on genetic susceptibility of type 2 diabetes in a large sample of Chinese -population. RESULTS In meta analysis of 9 studies with 9 422 cases and 8 585 control subjects, no association was found between rs290487 and type 2 diabetes in China (OR=1.06, 95% confidence interval (CI), 0.96-1.17, p=0.19). In case control study, rs290487 was genotyped in 5 151 diabetic patients and 4 650 non-diabetic controls. After adjusting for sex, age and BMI, and using an additive genetic model, logistic regression analysis revealed no association between rs290487 and type 2 diabetes (OR=1.015, 95%CI 0.949-1.087, p=0.662). No association was found between rs290487 and type 2 diabetes in northern and southern Chinese population separately. CONCLUSIONS In summary, we have found no association between rs290487 and type 2 diabetes in Chinese population. This SNP is unlikely an influential genetic variant with type 2 diabetes in Chinese population.
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Affiliation(s)
- Q Ren
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
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Huang L, Ren Q, Sun Y, Ye L, Cao H, Ge F. Lower incidence and severity of tomato virus in elevated CO(2) is accompanied by modulated plant induced defence in tomato. Plant Biol (Stuttg) 2012; 14:905-13. [PMID: 22512888 DOI: 10.1111/j.1438-8677.2012.00582.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Elevation in atmospheric CO(2) concentration broadly affects plant phenology and physiology, and these effects may alter the performance of plant viruses. The effects of elevated CO(2) on the susceptibility of tomato plants to Tomato yellow leaf curl virus (TYLCV) were examined for two successive years in open top chambers (OTC) in the field. We experimentally tested the hypothesis that elevated CO(2) would reduce the incidence and severity of TYLCV on tomato by altering plant defence strategies. Our results showed that elevated CO(2) decreased TYLCV disease incidence (by 14.6% in 2009 and 11.8% in 2010) and decreased disease severity (by 20.0% in 2009 and 10.4% in 2010). Elevated CO(2) also decreased the level of TYLCV coat protein in tomato leaves. Regardless of virus infection, elevated CO(2) increased plant height and aboveground biomass. Additionally, elevated CO(2) increased the leaf C:N ratio of tomato, but decreased soluble protein content in leaves. Notably, elevated CO(2) increased the salicylic acid (SA) level in uninfected and infected plants. In contrast, elevated CO(2) reduced jasmonic acid (JA) in uninfected plants while it increased JA and abscisic acid (ABA) in virus-infected plants. Furthermore, combined exogenous SA and JA application enhanced resistance to TYLCV more than application of either SA or JA alone. Our results suggest that the modulated antagonistic relationship between SA and JA under elevated CO(2) makes a great contribution to increased tomato resistance to TYLCV, and the predicted increases in tomato productivity may be enhanced by reduced plant virus susceptibility under projected rising CO(2) conditions.
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Affiliation(s)
- L Huang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Jia J, Liu F, Ren Q, Pei X, Cao R, Wu Y. SU-E-J-36: A Flexible Integration of Key Technologies in Image-Guided Radiotherapy for Accurate Radiotherapy System (ARTS-IGRT). Med Phys 2012; 39:3660. [DOI: 10.1118/1.4734871] [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: 11/07/2022] Open
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47
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Wang Y, Li G, Ren Q, Wu Y. SU-E-T-209: Four-Dimensional Gamma Method for Dose-Guided Radiotherapy. Med Phys 2012; 39:3751. [DOI: 10.1118/1.4735270] [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: 11/07/2022] Open
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48
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Yang J, Guan G, Niu Q, Liu Z, Li Y, Liu J, Ma M, Ren Q, Liu A, Luo J, Yin H. Development and application of a loop-mediated isothermal amplification assay for rapid detection of Borrelia burgdorferi s. l. in ticks. Transbound Emerg Dis 2012; 60:238-44. [PMID: 22587441 DOI: 10.1111/j.1865-1682.2012.01335.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A loop-mediated isothermal amplification (LAMP) assay was developed to detect Borrelia burgdorferi s. l. in ticks, which is a pathogen that causes Lyme disease. Cross-reactions with Chlamydia psittaci, Mycoplasma mycoides subsp. capri and some tick-borne pathogens were excluded. Analytical sensitivity of LAMP showed its detection limit was from 0.02 to 0.2 pg of DNA in detection of the reference samples at 65°C for 40 min. The performance of LAMP was assessed by testing 110 samples from susceptible tick species and comparing the results with conventional and nested PCR tests previously described. The results demonstrated that LAMP was significantly more sensitive than the conventional PCR (32.7% versus 15.5%, P < 0.05) and slightly more sensitive, although not significantly so, than nested PCR (32.7% versus 26.4%, P > 0.05). The assay was used to analyse a total of 1052 ticks collected from eight provinces in China. The results showed that the infection rates of B. burgdorferi s. l. varied from 12.5% to 88.9% across the different geographical sites. Selected positive samples were subjected to sequencing and sequence analysis for conformation of the accuracy of the assay. Here we report a highly sensitive, specific and easy diagnostic assay based on LAMP technology. These data indicate that LAMP is a useful approach for detecting B. burgdorferi s. l. in field-collected ticks and has the potential as an alternative tool for the ecological and epidemiological surveillance of Lyme disease.
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Affiliation(s)
- J Yang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases MOA, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Gansu, China
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49
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Ren Q, Xu B, Chen SQ, Yang Y, Wang CY, Wang YD, Wang XH, Hua LX, Chen M. A common genetic variant of 5p15.33 is associated with risk for prostate cancer in the Chinese population. Genet Mol Res 2012; 11:1349-56. [PMID: 22653581 DOI: 10.4238/2012.may.15.5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recent evidence has suggested that single-nucleotide polymorphisms (SNPs) located at 5p15.33 contribute to susceptibilities for several cancer types, including prostate cancer. To determine whether SNP rs402710 in this region plays a role in prostate cancer, we analyzed these associations in a Chinese population; 251 prostate cancer patients and 273 control subjects were included in this case-control study. Genotypes were determined by PCR-RFLP. We found that subjects carrying the CC homozygote had a decreased risk for prostrate cancer compared to those carrying TT/TC genotypes (odds ratio (OR) = 0.69, 95% confidence interval (CI) = 0.48-0.98, P = 0.038). Compared with the TT homozygote, subjects carrying the CC homozygote also had a decreased risk for prostate cancer (OR = 0.71, 95%CI = 0.51-0.99, P = 0.043). We conclude that rs402710 polymorphisms in the 5p15.33 region are associated with prostate cancer risk in the Chinese population. Further investigations with large cohorts and done worldwide are warranted to determine whether our findings are detected in other populations.
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Affiliation(s)
- Q Ren
- Department of Anesthesiology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
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50
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Niu Q, Guan G, Liu Z, Ma M, Li Y, Liu A, Ren Q, Liu J, Luo J, Yin H. Simultaneous detection of piroplasma infections in field Haemaphysalis qinghaiensis ticks by reverse line blotting. Exp Appl Acarol 2012; 56:123-132. [PMID: 22143673 DOI: 10.1007/s10493-011-9503-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 11/06/2011] [Indexed: 05/31/2023]
Abstract
Piroplasmosis is caused by tick-borne haemoprotozoan parasites in the genera of Theileria and Babesia, in which numbers of agents are highly pathogenic for cattle, sheep and goats. We developed a reverse line blot (RLB) assay for detection and differentiation of four different parasites, in which 18S ribosomal RNA gene sequence was amplified with a set of universal primers specific for all members in the genera of Theileria and Babesia; and the probes were designed on the basis of hypervariable region 4 (V4 region) of 18S rRNA gene. Three Theileria and one Babesia can be detected simultaneously on this system and it was sensitive to detect a parasitemia level between 10(-5) and 10(-8)%. A total of 149 Haemaphysalis qinghaiensis ticks collected from Lintan County of Gannan Tibetan Autonomous Region was tested by RLB. Among these, 136 tick samples were also tested by a nested PCR assay developed previously. After comparison of these results, it showed that more T. luwenshuni was detected in RLB assay, while more T. uilenbergi was detected in H. qinghaiensis ticks by nested PCR. The RLB has shown capability for simultaneous detection of four species of piroplasm in H. qinghaiensis ticks, indicating its usefulness for epidemiological studies of piroplasmosis.
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Affiliation(s)
- Q Niu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Epizootic Diseases of Grazing Animals, Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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