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Nan X, Wang QX, Xing SJ, Liang ZG. Design, synthesis, and biological evaluation of thiazole/thiadiazole carboxamide scaffold-based derivatives as potential c-Met kinase inhibitors for cancer treatment. J Enzyme Inhib Med Chem 2023; 38:2247183. [PMID: 37642355 PMCID: PMC10467532 DOI: 10.1080/14756366.2023.2247183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023] Open
Abstract
As part of our continuous efforts to discover novel c-Met inhibitors as antitumor agents, four series of thiazole/thiadiazole carboxamide-derived analogues were designed, synthesised, and evaluated for the in vitro activity against c-Met and four human cancer cell lines. After five cycles of optimisation on structure-activity relationship, compound 51am was found to be the most promising inhibitor in both biochemical and cellular assays. Moreover, 51am exhibited potency against several c-Met mutants. Mechanistically, 51am not only induced cell cycle arrest and apoptosis in MKN-45 cells but also inhibited c-Met phosphorylation in the cell and cell-free systems. It also exhibited a good pharmacokinetic profile in BALB/c mice. Furthermore, the binding mode of 51am with both c-Met and VEGFR-2 provided novel insights for the discovery of selective c-Met inhibitors. Taken together, these results indicate that 51am could be an antitumor candidate meriting further development.
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Affiliation(s)
- Xiang Nan
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, China
- School of Biomedical Engineering, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University Medical School, Shenzhen, China
| | - Qiu-Xu Wang
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Shao-Jun Xing
- School of Biomedical Engineering, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University Medical School, Shenzhen, China
| | - Zhi-Gang Liang
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, China
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Yao JF, Deng MZ, Xie T, Chen K, Wang QX, Liang ZG. Study on the application of oral digital design in aesthetic restoration of anterior teeth of cleft lip/palate patients. Hua Xi Kou Qiang Yi Xue Za Zhi 2021; 39:582-590. [PMID: 34636208 PMCID: PMC8548225 DOI: 10.7518/hxkq.2021.05.014] [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] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/19/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES A study was conducted to investigate the clinical effects of oral digital design on the aesthetic restoration of anterior teeth of cleft lip/palate patients. METHODS Nine adult cleft lip/palate patients who need aesthetic restoration of anterior teeth were recruited. Digital information of patients' dental arches, the surrounding soft tissue and face were captured by digital camera and scanner. The aesthetic analysis and design were conducted using keynote and 3shape software and were demonstrated to the patients. The optimized treatment plan was ensured by communicating with the patients. Digital wax-up models were exported and printed into resin diagnostic models, which were then utilized in the treatment process to guide the doctors and the technicians in tooth preparation and in making the final restorations, respectively. The adhesive procedure was completed after satisfactory try-in. Aesthetics assessment was conducted in accordance with the anterior esthetic evaluation form. The scores of patient's satisfaction were recorded on a questionnaire containing six items of aesthetic index and doctor-patient communication. Patients were interviewed and examined after 1, 3, 6, and 12 months, respectively, and the clinical effects of restorations were evaluated. RESULTS All nine patients had satisfactory clinical results. The aesthetic defects of the patients were effectively addressed. All treatments met the requirements of the preoperative digital designs. The patients' scores were all above 90 on the satisfaction scale. At 12 months after the operation, the clinical effects of restorations of all cases achieved A class in each evaluation indicator. CONCLUSIONS For cleft lip/palate patients with esthetic defect in the anterior teeth, the digital design plays an important role in optimizing the treatment plan and guides the whole treatment process. This design can help clinicians achieve predictable satisfactory aesthetic results.
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Affiliation(s)
- Jin-Feng Yao
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Meng-Zhao Deng
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Tian Xie
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Kan Chen
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Qiu-Xu Wang
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Zhi-Gang Liang
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
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Yang WY, Li YF, Wang ZR, Yu TX, Xu DJ, Yang N, Niu XY, Cai XL, Zhuo WY, Wu XM, Yan M, Zhou JS, Zhang HW, Liang ZG, Wu WJ, Cheng JH, Huang LA, Zhang YS, Guan Y, Tan ZF, Lu D, He N, Dong DW, Zhu HL, Yang B, Shen QY, Xu AD. Combined therapy of intensive statin plus intravenous rt-PA in acute ischemic stroke: the INSPIRE randomized clinical trial. J Neurol 2021; 268:2560-2569. [PMID: 33555418 DOI: 10.1007/s00415-020-10388-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/18/2020] [Accepted: 12/27/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To investigate the safety and efficacy of intensive statin in the acute phase of ischemic stroke after intravenous thrombolysis therapy. METHODS A total of 310 stroke patients treated with rt-PA were randomly scheduled into the intensive statin group (rosuvastatin 20 mg daily × 14 days) and the control group (rosuvastatin 5 mg daily × 14 days). The primary clinical endpoint was excellent functional outcome (mRS ≤ 1) at 3 months, and the primary safety endpoint was symptomatic intracranial hemorrhage (sICH) in 90 days. RESULTS The intensive statin users did not achieve a favorable outcome in excellent functional outcome (mRS ≤ 1) at 3 months compared with controls (70.3% vs. 66.5%, p = 0.464). Intensive statin also not significantly improved the overall distribution of scores on the modified Rankin scale, as compared with controls (p = 0.82 by the Cochran-Mantel-Haenszel test). The incidence of primary safety endpoint events (sICH) in 90 days did not significantly differ between the intensive statin group and control group (0.6% vs. 1.3%, p > 0.999). CONCLUSION The INSPIRE study indicated that intensive statin therapy may not improve clinical outcomes compared with the low dose of statin therapy in AIS patients undergoing intravenous thrombolysis, and the two groups had similar safety profile. CLINICAL TRIAL REGISTRATION URL: http://www.chictr.org . Unique identifier: ChiCTR-IPR-16008642.
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Affiliation(s)
- Wan-Yong Yang
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Yu-Feng Li
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Zi-Ran Wang
- Department of Neurology and Stroke Center, Linyi People's Hospital, Linyi, 276003, China
| | - Tian-Xia Yu
- Department of Neurology, Yan Tai Shan Hospital, Yantai, 264000, China
| | - Dong-Juan Xu
- Department of Neurology, Dongyang Affiliated Hospital of Wenzhou Medical University, Dongyang, 322100, China
| | - Nan Yang
- Department of Neurology, Traditional Chinese Medicine Hospital of Zhongshan City, Zhongshan, 528400, China
| | - Xiao-Yuan Niu
- Department of Neurology, First Hospital of Shanxi Medical University, Taiyuan, 030000, China
| | - Xue-Li Cai
- Department of Neurology, Lishui Hospital of Zhejiang University, The Central Hospital of Lishui, Lishui, 323000, China
| | - Wen-Yan Zhuo
- Department of Neurology, Zhuhai Hospital Affiliated With Jinan University, Zhuhai, 519000, China
| | - Xue-Mei Wu
- Department of Neurology, General Hospital of TISCO, Taiyuan, 030000, China
| | - Min Yan
- Jingdong Medical District, General Hospital of the Chinese People's Liberation Army, Beijing, 100853, China
| | - Jun-Shan Zhou
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210000, China
| | - Hao-Wen Zhang
- Department of Neurology, Laixi City People's Hospital, Qingdao, 266600, China
| | - Zhi-Gang Liang
- Department of Neurology, Yuhuangding Hospital Affiliated to Qingdao University, Yantai, 264000, China
| | - Wen-Jun Wu
- Department of Neurology, Zhongshan City People's Hospital, Zhongshan, 528403, China
| | - Jian-Hua Cheng
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Li-An Huang
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Yu-Sheng Zhang
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Ying Guan
- Department of Biostatistics, School of Public Health, Southern Medical University, Guangzhou, 510515, China
| | - Ze-Feng Tan
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Dan Lu
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Niu He
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Da-Wei Dong
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Hui-Li Zhu
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Bing Yang
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China
| | - Qing-Yu Shen
- Department of Neurology, Sun-Yet Sen Memorial Hospital of Sun-Yet Sen University, Guangzhou, 510120, China.
| | - An-Ding Xu
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China. .,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510630, China.
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Sun C, Ren XY, Gao Y, Liang ZG, Mou M, Gu HF, Xiao YB. Clinical Efficacy and Safety of Major Uterine Wall Resection and Reconstruction of the Uterus Combined with LNG-IUS for the Treatment of Severe Adenomyosis. Geburtshilfe Frauenheilkd 2019; 80:300-306. [PMID: 32139919 PMCID: PMC7056398 DOI: 10.1055/a-0995-2200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 08/01/2019] [Accepted: 08/11/2019] [Indexed: 12/16/2022] Open
Abstract
Objective
Aim of the study was to evaluate the clinical efficacy and safety of major uterine wall resection and reconstruction of the uterus (MURU) combined with a levonorgestrel-releasing intrauterine system (LNG-IUS) for the treatment of adenomyosis.
Methods
Ninety patients diagnosed with adenomyosis were enrolled in this study. All participants were examined by transvaginal ultrasound (TVU) or magnetic resonance imaging (MRI). Serum levels of cancer antigen 125 (CA 125) were quantitatively measured. All patients underwent MURU in combination with LNG-IUS. The therapeutic safety of MURU was assessed during surgery and the patientsʼ stay in hospital. The clinical efficacy was evaluated by comparatively analyzing changes in dysmenorrhea, volume of menstrual blood, uterine volume and serum levels of CA 125 before, and at 3, 6 and 12 months following MURU.
Results
All 90 patients enrolled in the study were successfully treated with MURU combined with LNG-IUS. No significant complications were observed during surgery and hospital stay. The mean operation time, intraoperative blood loss and length of hospital stay were 82.4 ± 13.8 min, 53.3 ± 20.3 ml, and 4.3 ± 0.8 days, respectively. Dysmenorrhea completely disappeared in all patients. Uterine volume and serum levels of CA 125 were restored to normal ranges. No recurrence of adenomyosis was observed during postoperative follow-up.
Conclusion
MURU combined with LNG-IUS is an efficacious and safe treatment for severe adenomyosis. This combined technique is not only effective to manage severe adenomyosis but also preserves as much of the uterus as possible.
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Affiliation(s)
- Cui Sun
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Xiao-Yan Ren
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Yi Gao
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Zhi-Gang Liang
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Meng Mou
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Heng-Fang Gu
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Yan-Bing Xiao
- Gynecology Department of Affiliate Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
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Hao XJ, Xu CZ, Wang JT, Li XJ, Wang MM, Gu YH, Liang ZG. miR-21 promotes proliferation and inhibits apoptosis of hepatic stellate cells through targeting PTEN/PI3K/AKT pathway. J Recept Signal Transduct Res 2019; 38:455-461. [PMID: 31038023 DOI: 10.1080/10799893.2019.1585452] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
To investigate the effect of microRNA 21 (miR-21) on hepatic stellate cells (HSCs) proliferation and apoptosis, and further to study its potential mechanisms. LX-2 cells were divided into miR-21 mimic group (Mimic), miR-21 mimic negative control group (NM), miR-21 inhibitor group (Inhibitor), miR-21 inhibitor negative control group (NC), and blank control group (Control). The cell proliferation was detected by CCK-8 assay and the cell migration and invasion were detected by scratch and transwell assay. Cell cycle and apoptosis were detected by flow cytometry. The levels of interleukin (IL)-6, tumor necrosis factor (TNF)-α, and transforming growth factor (TGF)-β1 were detected by enzyme-linked immunosorbent assay (ELISA). Proliferation, apoptosis, and phosphatase and tensin homolog (PTEN)/phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) signaling pathway related genes and proteins were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and western blot, respectively. The cells proliferation, migration, and invasion were promoted in Mimic group. The levels of IL-6, TNF-α, and TGF-β1 were increased after miR-21 administration. The expression of α-smooth muscle actin (SMA) and collagen 1 (Colla1) were increased, while Bax/B-cell lymphoma (Bcl)-2 ratio and programed cell death 4 (PDCD4) were reduced after miR‑21 treatment. Meanwhile, the mRNA and protein expression of PTEN were reduced and PI3K/AKT pathway been promoted. Our study demonstrated that miR-21 could promote proliferation and inhibit apoptosis of HSCs, and its mechanism may be related to PTEN/PI3K/AKT pathway.
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Affiliation(s)
- Xin-Jie Hao
- a Hepatic Department , No. 6 Qingdao People's Hospital , Qingdao , China
| | - Cheng-Zhen Xu
- a Hepatic Department , No. 6 Qingdao People's Hospital , Qingdao , China
| | - Jin-Tai Wang
- b Orthopedics Department , No. 8 Qingdao People's Hospital , Qingdao , China
| | - Xiao-Jie Li
- a Hepatic Department , No. 6 Qingdao People's Hospital , Qingdao , China
| | - Ming-Min Wang
- a Hepatic Department , No. 6 Qingdao People's Hospital , Qingdao , China
| | - Yi-Hai Gu
- c Department of Traditional Chinese Medicine , No. 6 Qingdao People's Hospital , Qingdao , China
| | - Zhi-Gang Liang
- d Department of Neurology , Affiliated Yantai Yuhuangding Hospital of Qingdao University , Yantai , China
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Gao N, Tao LX, Huang J, Zhang F, Li X, O'Sullivan F, Chen SP, Tian SJ, Mahara G, Luo YX, Gao Q, Liu XT, Wang W, Liang ZG, Guo XH. Contourlet-based hippocampal magnetic resonance imaging texture features for multivariant classification and prediction of Alzheimer's disease. Metab Brain Dis 2018; 33:1899-1909. [PMID: 30178281 DOI: 10.1007/s11011-018-0296-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 07/23/2018] [Indexed: 01/18/2023]
Abstract
The study is aimed to assess whether the addition of contourlet-based hippocampal magnetic resonance imaging (MRI) texture features to multivariant models improves the classification of Alzheimer's disease (AD) and the prediction of mild cognitive impairment (MCI) conversion, and to evaluate whether Gaussian process (GP) and partial least squares (PLS) are feasible in developing multivariant models in this context. Clinical and MRI data of 58 patients with probable AD, 147 with MCI, and 94 normal controls (NCs) were collected. Baseline contourlet-based hippocampal MRI texture features, medical histories, symptoms, neuropsychological tests, volume-based morphometric (VBM) parameters based on MRI, and regional CMgl measurement based on fluorine-18 fluorodeoxyglucose-positron emission tomography were included to develop GP and PLS models to classify different groups of subjects. GPR1 model, which incorporated MRI texture features and was based on GPG, performed better in classifying different groups of subjects than GPR2 model, which used the same algorithm and had the same data as GPR1 except that MRI texture features were excluded. PLS model, which included the same variables as GPR1 but was based on the PLS algorithm, performed best among the three models. GPR1 accurately predicted 82.2% (51/62) of MCI convertors confirmed during the 2-year follow-up period, while this figure was 53 (85.5%) for PLS model. GPR1 and PLS models accurately predicted 58 (79.5%) vs. 61 (83.6%) of 73 patients with stable MCI, respectively. For seven patients with MCI who converted to NCs, PLS model accurately predicted all cases (100%), while GPR1 predicted six (85.7%) cases. The addition of contourlet-based MRI texture features to multivariant models can effectively improve the classification of AD and the prediction of MCI conversion to AD. Both GPR and LPS models performed well in the classification and predictive process, with the latter having significantly higher classification and predictive accuracies. Advances in knowledge: We combined contourlet-based hippocampal MRI texture features, medical histories, symptoms, neuropsychological tests, volume-based morphometric (VBM) parameters, and regional CMgl measurement to develop models using GP and PLS algorithms to classify AD patients.
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Affiliation(s)
- Ni Gao
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Li-Xin Tao
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Jian Huang
- Department of Epidemiology & Public Health, University College Cork, Cork, 78746, Ireland
| | - Feng Zhang
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Xia Li
- Department of Epidemiology & Public Health, University College Cork, Cork, 78746, Ireland
| | - Finbarr O'Sullivan
- Department of Epidemiology & Public Health, University College Cork, Cork, 78746, Ireland
| | - Si-Peng Chen
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Si-Jia Tian
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Gehendra Mahara
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Yan-Xia Luo
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Qi Gao
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Xiang-Tong Liu
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China
| | - Wei Wang
- School of Medical Science, Edith Cowan University, Perth, WA, 6050, Australia
| | - Zhi-Gang Liang
- Department of Radiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Xiu-Hua Guo
- School of Public Health, Capital Medical University, No. 10 XitoutiaoYouanmenwai Street, Beijing, 100069, China.
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, China.
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Liang ZG, Gao Y, Ren XY, Sun C, Gu HF, Mou M, Xiao YB. Experimental study on ablation of leiomyoma by combination high-intensity focused ultrasound and iodized oil in vitro. J Obstet Gynaecol Res 2017; 43:1578-1584. [PMID: 28708319 DOI: 10.1111/jog.13407] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/11/2017] [Accepted: 05/01/2017] [Indexed: 11/26/2022]
Abstract
AIM The aim of the current study was to investigate whether iodized oil (IO) enhances high-intensity focused ultrasound (HIFU) ablation of uterine leiomyoma and to determine the features of hyperechoic changes in the target region. METHODS Forty samples of uterine leiomyoma were randomly divided into an experimental group and a control group. In the experimental group, the leiomyoma was ablated by HIFU 30 min after 1 mL of iodized oil had been injected into the center of the myoma. The hyperechoic values and areas in the target region were observed by B-modal ultrasound after HIFU ablation. The samples were cut successively into slices and stained by triphenyltetrazolium chloride (TTC) solution within 1 h after HIFU ablation. The diameters of TTC-non-stained areas were measured and tissues in the borderline of the TTC-stained and -non-stained areas were observed pathologically. All procedures in the control group were the same as those in the experimental group except IO was replaced by physiological saline. RESULTS The hyperechoic value in the target region in the experimental group was higher than that in the control group 4 min after HIFU ablation (P < 0.05). Hyperechoic areas in the target region as well as TTC-non-stained volumes in the experimental group were greater than those in the control group (P < 0.05). Routine pathologic observation showed that coagulation necrosis of leiomyoma occurred in the target region in both groups. CONCLUSION IO causes coagulation necrosis, enlarges tissue damage, and postpones the attenuation of hyperechoic changes in the target region when HIFU ablation is carried out for leiomyoma in vitro.
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Affiliation(s)
- Zhi-Gang Liang
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Yi Gao
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Xiao-Yan Ren
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Cui Sun
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Heng-Fang Gu
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Meng Mou
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
| | - Yan-Bing Xiao
- Department of Gynaecology, Affiliated Hospital of Maternal and Child Health Care of Zunyi Medical University, Zunyi, China
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Hu XX, Zhu YM, He LT, Gu Y, Liang ZG, Zheng CS. [Investigation of related risk factors of temporomandibular disorders in 109 patients]. Shanghai Kou Qiang Yi Xue 2017; 26:213-216. [PMID: 28815255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
PURPOSE To investigate the related risk factors of temporomandibular disorders(TMD), and to provide evidences for clinical prevention. METHODS One hundred and nine TMD patients were included in the study as case group, while 109 people with no TMJ symptoms and signs were selected randomly as control group. All subjects fulfilled questionaires. Logistics regression analysis was used to analyze the data with SPSS 22.0 software package. RESULTS Females patients were more common than males, with 20~29 age group accounting for 44%. The proportions of patients with habits of bruxism or clenching, unilateral mastication and maxillofacial injure history were significantly greater than those of control group (P<0.05). The proportions of patients with life stress and habits of stay-up late, chewing hard food and orthodontic treatment history showed no significant difference compared with the control group (P>0.05). CONCLUSIONS TMD has a higher prevalence in female than in male, with a peak incidence in 20-29 age group. Habits of bruxism or clenching, unilateral mastication and maxillofacial injury history may be risk factors of TMD, while life stress, habits of stay-up late, chewing hard food and orthodontic treatments show no significant correlation with TMD.
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Affiliation(s)
- Xin-Xin Hu
- Department of Stomatology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University. Shenzhen 518000, Guangdong Province, China. E-mail:
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Gu HF, Mou M, Liang ZG, Sun C, Ren XY, Xiao YB. The association between paraoxonase 1 gene polymorphisms and polycystic ovarian syndrome. Cell Mol Biol (Noisy-le-grand) 2016; 62:44-47. [PMID: 28145863 DOI: 10.14715/cmb/2016.62.14.7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 01/13/2017] [Indexed: 11/18/2022]
Affiliation(s)
- H F Gu
- Gynaecology of Affiliate Hospital Maternal and Child Health Care of Zunyi Medical University, Zunyi, Guizhou, China
| | - M Mou
- Gynaecology of Affiliate Hospital Maternal and Child Health Care of Zunyi Medical University, Zunyi, Guizhou, China
| | - Z G Liang
- Gynaecology of Affiliate Hospital Maternal and Child Health Care of Zunyi Medical University, Zunyi, Guizhou, China
| | - C Sun
- Gynaecology of Affiliate Hospital Maternal and Child Health Care of Zunyi Medical University, Zunyi, Guizhou, China
| | - X Y Ren
- Gynaecology of Affiliate Hospital Maternal and Child Health Care of Zunyi Medical University, Zunyi, Guizhou, China
| | - Y B Xiao
- Gynaecology of Affiliate Hospital Maternal and Child Health Care of Zunyi Medical University, Zunyi, Guizhou, China
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10
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Wei XJ, Han M, Yang FY, Wei GC, Liang ZG, Yao H, Ji CW, Xie RS, Gong CL, Tian Y. Biological significance of miR-126 expression in atrial fibrillation and heart failure. ACTA ACUST UNITED AC 2015; 48:983-9. [PMID: 26313139 PMCID: PMC4671524 DOI: 10.1590/1414-431x20154590] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/27/2015] [Indexed: 12/22/2022]
Abstract
We investigated the biological significance of microRNA-126 (miR-126) expression in patients with atrial fibrillation (AF) and/or heart failure (HF) to examine the possible mechanism of miR-126-dependent AF and development of HF. A total of 103 patients were divided into three groups: AF group (18 men and 17 women, mean age: 65.62±12.72 years), HF group (17 men and 15 women, mean age: 63.95±19.71 years), and HF-AF group (20 men and 16 women, mean age: 66.56±14.37 years). Quantitative real-time PCR was used to measure relative miR-126 expression as calculated by the 2-ΔΔCt method. miR-126 was frequently downregulated in the 3 patient groups compared with controls. This reduction was significantly lower in permanent and persistent AF patients than in those with paroxysmal AF (P<0.05, t-test). Moreover, miR-126 expression was markedly lower in the HF-AF group compared with the AF and HF groups. The 3 patient groups had higher N-terminal prohormone brain natriuretic peptide (NT-proBNP) levels, lower left ventricular ejection fraction (LVEF), larger left atrial diameter, and higher cardiothoracic ratio compared with controls. There were significant differences in NT-proBNP levels and LVEF among the AF, HF, and HF-AF groups. Pearson correlation analysis showed that relative miR-126 expression was positively associated with LVEF, logarithm of NT-proBNP, left atrial diameter, cardiothoracic ratio, and age in HF-AF patients. Multiple linear regression analysis showed that miR-126 expression was positively correlated with LVEF, but negatively correlated with the logarithm of NT-pro BNP and the cardiothoracic ratio (all P<0.05). Serum miR-126 levels could serve as a potential candidate biomarker for evaluating the severity of AF and HF. However, to confirm these results, future studies with a larger and diverse patient population are necessary.
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Affiliation(s)
- X J Wei
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - M Han
- Emergency Department, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - F Y Yang
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - G C Wei
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - Z G Liang
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - H Yao
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - C W Ji
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - R S Xie
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - C L Gong
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
| | - Y Tian
- Intensive Care Unit, The People's Hospital of Laiwu City, Laiwu City, Shandong Province, China
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11
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Wu ML, Gong L, Qian C, Liang ZG, Zeng W. Characteristics of blood chemistry, hematology, and lymphocyte subsets in pregnant rhesus monkeys. Chin J Nat Med 2015; 13:409-14. [PMID: 26073336 DOI: 10.1016/s1875-5364(15)30033-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Indexed: 11/29/2022]
Abstract
The present study was designed to characterize the blood chemistry, hematology, and lymphocyte subsets in pregnant rhesus monkeys and provide baseline parameters for future studies of reproductive and developmental toxicity and developmental immunotoxicity. Harem-mating was used in 96 female and 16 male rhesus monkeys. Pregnancy was confirmed on gestation day (GD)18 by ultrasound. The blood samples of rhesus monkeys were collected at various times (20 days before pregnancy and GD20, 100 and 150). The analyses of blood chemistry, hematology, and lymphocyte subsets were performed. Compared with 20 days before pregnancy, Significant decreases (P < 0.05) were observed in HCT and RBC on GD20, GD150 and in HGB on GD150, Significant increases in NEUT and decreases in LYMPH on GD20 were observed. Significant decreases in ALB from GD20 to GD150 were observed, significant decreases in TP was observed on GD100. Significant increases in mean GLU were observed on GD20 and GD150 during pregnancy. Significant decreases (P < 0.05) in CD20(+) subsets on GD100, GD150 and CD4(+)/CD8(+)ratio on GD150 were observed, The significant changes of MCV, MCHC, RDW-SD, MCV, MONO, ALT, AST, GLB, ALP, TBIL, DBIL, IBIL, GGT, CR-S, URIC, TC, TG and CK were observed during the pregnant period, but no biologic change were observed, There were no significant changes in MCH, RDW-CV, MPV, BUN, CD3(+), CD4(+) and CD8(+) during pregnancy. These data provide a database for preclinical study in rhesus monkeys. Physiological anemia, hyperglycemia, and immune suppression may occur in pregnant rhesus monkey which is similar to that found in human, and it is essential to distinguish the physiological changes from the pharmacological effects in reproductive and developmental toxicity and developmental immunotoxicity studies of pharmaceuticals.
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Affiliation(s)
- Ming-Ling Wu
- Sichuan Industrial Institute of Antibiotics, Chengdu 610052, China
| | - Li Gong
- Sichuan Primed Bio-tech Group Co. Ltd., Chengdu 610017, China
| | - Can Qian
- Sichuan Industrial Institute of Antibiotics, Chengdu 610052, China
| | - Zhi-Gang Liang
- Sichuan Industrial Institute of Antibiotics, Chengdu 610052, China
| | - Wen Zeng
- Sichuan Industrial Institute of Antibiotics, Chengdu 610052, China.
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12
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Liang ZG, Liu ZL, Sun XW, Tao ML, Yu GP. Viral encephalitis complicated by acute retinal necrosis syndrome: A case report. Exp Ther Med 2015; 10:465-467. [PMID: 26622338 DOI: 10.3892/etm.2015.2557] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 11/10/2014] [Indexed: 11/05/2022] Open
Abstract
Acute retinal necrosis syndrome (ARN) is a viral infection characterized by focal retinal necrosis. Viral meningitis complicated by ARN is relatively rare. In the present case study, a 44-year-old male presented with fever, headache and mental disorder. After four days, the patient developed blurred vision. The patient was diagnosed with viral encephalitis complicated by bilateral ARN, based on the examination results. After treatment with antivirals and systemic glucocorticoids, the symptoms of the patient improved. Viral encephalitis may be an important risk factor for ARN. For a patient with viral encephalitis who experiences decreased visual acuity or vitreous opacification, the possibility of ARN should be considered.
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Affiliation(s)
- Zhi-Gang Liang
- Department of Neurology, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong 264000, P.R. China
| | - Zhu-Li Liu
- Department of Neurology, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong 264000, P.R. China
| | - Xu-Wen Sun
- Department of Neurology, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong 264000, P.R. China
| | - Man-Li Tao
- Department of Neurology, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong 264000, P.R. China
| | - Guo-Ping Yu
- Department of Neurology, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong 264000, P.R. China
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13
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Zhou JX, Zhang HB, Huang Y, He Y, Zheng Y, Anderson JP, Gai WP, Liang ZG, Wang Y, Ren XM, Wang Q, Gong XL, Yang J, Wang X, Halliday G, Wang XM. Tenuigenin attenuates α-synuclein-induced cytotoxicity by down-regulating polo-like kinase 3. CNS Neurosci Ther 2013; 19:688-94. [PMID: 23710708 DOI: 10.1111/cns.12124] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/18/2013] [Accepted: 04/18/2013] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND AIMS Tenuigenin (Ten) is a Chinese herbal extract with antioxidative and antiinflammatory effects on toxin-induced cell models of Parkinson's disease (PD); however, its effects on α-synuclein toxicity-based PD models remain unknown. α-synuclein hyperphosphorylation is a key event in PD pathogenesis and potential target of therapeutic interventions. We tested whether Ten alleviates α-synuclein-induced cytotoxicity via reducing kinases that phosphorylate α-synuclein. METHODS SH-SY5Y cells transiently transfected with wild-type or A53T mutant α-synuclein were used to evaluate the effect of Ten on the levels of α-synuclein phosphorylation-related kinases. Cells treated with 10 μM Ten for 24 h were measured for viability (proliferation and apoptosis assays) and cellular proteins harvested and fractioned. The levels of total and phosphorylated α-synuclein and five associated kinases (polo-like kinase [PLK] 1-3, casein kinase [CK] 1-2) were evaluated by Western blotting. RESULTS Overexpression of either wild-type or A53T mutant α-synuclein decreased cell viability and increased α-synuclein phosphorylation. Ten treatment-protected cells from this α-synuclein-induced toxicity and dramatically reduced α-synuclein phosphorylation and PLK3 (but not other kinase) levels. CONCLUSION In α-synuclein cell model of PD, Ten is effective in attenuating α-synuclein-induced toxicity and α-synuclein phosphorylation probably via targeting PLK3, suggesting it could be an efficient therapeutic drug to treat α-synuclein-related neurodegeneration.
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Affiliation(s)
- Jin-Xia Zhou
- Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, China
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14
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Li W, Hu B, Li GL, Zhao XQ, Xin BZ, Lin JX, Shen Y, Liang XH, Liu GF, Gao HQ, Liao XL, Liang ZG, Wang YJ. Heterozygote genotypes at rs2222823 and rs2811712 SNP loci are associated with cerebral small vessel disease in Han Chinese population. CNS Neurosci Ther 2012; 18:558-65. [PMID: 22621687 DOI: 10.1111/j.1755-5949.2012.00322.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AIMS With developments of etiology of cerebral small vessel disease (CSVD) and genome-wide association study (GWAS) of stroke, the genetic studies of CSVD are focused on genes related to blood-brain barrier (BBB) and aging. The project aims to investigate the association between CSVD and susceptibility loci and candidate genes. METHODS All study subjects admitted Beijing Tiantan Hospital from June 2009 to September 2010 including 197 cerebral small vessel disease patients(S), 198 large artery atherosclerosis control individuals (vascular stenotic rate ≥50% diameter reduction) (L), 200 hypertensive intracerebral hemorrhage control individuals (H) and 197 stroke-free control individuals (C). 15 SNPs in 4 genes (MYLK, AQP4, NINJ2, and INK4/ARF) were genotyped using Multiplex Snapshot assay. Each SNP was first examined between the groups S and C in different genetic models (codominant, dominant, recessive, overdominant, and log-additive). Permutation correction was used to adjust for multiple testing. The significant SNP loci were further analyzed in comparing S with L and H, respectively. Subgroup analysis was also performed for each risk-factor category. RESULTS Among the 15 SNPs, rs2222823 and rs2811712 were found to be significantly associated with CSVD after multiple-testing adjustment. The heterozygote (A/T) of rs2222823 of MYLK has an odds ratio of 0.52 (95% CI =[0.35, 0.79], P= 0.002, adjusted P= 0.031) when compared with homozygotes. The heterozygote (C/T) of rs2811712 of INK4/ARF has an odds ratio of 1.75 (95% CI =[1.13-2.71], P= 0.004, adjusted P= 0.050). The SNP rs2222823 was significant (P= 0.035) in comparing S with H. In comparing S versus L, it is significant for the subgroups of patients without diabetes (P= 0.012) and drinking (P= 0.018). rs2811712 was significant in comparing S with L for the subgroups of patients with hyperlipidemia (P= 0.029) and drinking (P= 0.04). CONCLUSION The heterozygotes (T/A) at the rs2222823 SNP locus of MYLK gene decreases the risk of having cerebral small vessel disease, while the heterozygotes (C/T) at the rs2811712 SNP locus of INK4/ARF gene increases the risk, suggesting that the MYLK and INK4/ARF are the associated genes of cerebral small vessel disease in Han Chinese population.
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Affiliation(s)
- Wei Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, China
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15
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Peng J, Liang ZG, Li KC. Intracranial malignant meningioma with cerebrospinal fluid dissemination: a case report. Chin Med J (Engl) 2011; 124:1597-1599. [PMID: 21740827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Malignant meningiomas are uncommon intracranial tumors. The metastasis of malignant meningiomas to distant extracranial sites are well known. However, dissemination of the tumours in the cerebrospinal fluid (CSF) is rare and few cases have been reported. We present a case of histologically proven malignant meningioma with CSF dissemination at the remote intracranial area and into the spinal canal detected with magnetic resonance imaging.
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Affiliation(s)
- Jing Peng
- Department of Radiology, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
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16
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Li S, Liang ZG, Wang GY, Yavetz B, Kim ED, Goldberg E. Molecular cloning and characterization of functional domains of a human testis-specific isoform of calpastatin. Biol Reprod 2000; 63:172-8. [PMID: 10859257 DOI: 10.1095/biolreprod63.1.172] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Human serum containing sperm-agglutinating antibodies was used to screen a testis cDNA expression library to identify the cognate antigens that may be responsible for this biological effect. The longest positive phage clone (1.9 kb) was sequenced and found to be a testis-specific isoform of calpastatin (tCAST). The testis-specific segment of tCAST is encoded by a single exon within intron 14 of the calpastatin gene. A unique protein isoform is produced that differs in domain structure from the somatic calpastatins (sCAST). Human sCAST most commonly has an N-terminal domain L plus the four functional calpain inhibitory domains. Human tCAST consists of a 40-amino-acid N-terminal T domain plus a part of domain II and all of domains III and IV from the somatic isoform. Our data show that the T domain can target cytosolic localization and membrane association of tCAST, whereas domain I of sCAST exhibits a nuclear localization function. Calpastatin is the endogenous inhibitor of calpain. The calpain/calpastatin system is involved in membrane fusion events for several cell types, and calpain has been localized to the sperm acrosome. We detected tCAST in human sperm and testes extracts by Western blotting with specific antisera. These observations suggest that tCAST may modulate calpain in the calcium-mediated acrosome reaction that is required for fertilization.
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Affiliation(s)
- S Li
- Center for Recombinant Gamete Contraceptive Vaccinogens and Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, Illinois 60208, USA
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O'Hern PA, Liang ZG, Bambra CS, Goldberg E. Colinear synthesis of an antigen-specific B-cell epitope with a 'promiscuous' tetanus toxin T-cell epitope: a synthetic peptide immunocontraceptive. Vaccine 1997; 15:1761-6. [PMID: 9364680 DOI: 10.1016/s0264-410x(97)00105-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Carrier conjugation is commonly used to provide T-cell help for small, linear peptides containing antigen-specific B-cell epitopes. However, carrier conjugation is expensive, variable and often results in adverse side effects if the conjugate is administered repeatedly. To eliminate the need for carrier conjugation, we examined two synthetic peptides for their ability to elicit sustained antibody titres in female rabbits and baboons. One peptide (hC1-20) was based on the sequence of the sperm-specific isozyme of human lactate dehydrogenase (LDH-C4). This peptide stimulates helper T-cell responses. The other peptide (bC5-19:TT) was a chimera between an LDH-C4 B-cell epitope and a 'promiscuous' T-cell epitope from tetanus toxin which has been shown to bind to and stimulate many different major histocompatibility complex alleles. Both peptides were immunogenic in rabbits and baboons. The chimera elicited consistently high antibody titres and was immunogenic in 19/19 wild-caught female baboons. When 14 bC5-19:TT immunized baboons were mated, their fertility was reduced by 62% compared with controls (P < 0.02). This carrier-free construct can be incorporated into biodegradable microspheres which may provide long-term protection from pregnancy with a single dose.
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Affiliation(s)
- P A O'Hern
- Center for Recombinant Gamete Vaccinogens, Northwestern University, Evanston, IL 60208, USA
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18
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Abstract
Human seminal plasma contains a factor that binds human immunoglobulin G (IgG). The factor has an estimated M(r) of 50 kD and interacts specifically with human IgG4. It does not bind other subclasses of human IgG or IgGs of other mammalian species tested. The factor was purified by affinity chromatography on protein G column. The 50-kD component was eluted in the adsorbed fraction and immunostained with monoclonal antibodies against heavy chain (gamma) of IgG. Purified subclasses of human serum IgG were separated into heavy and light chains by sodium dodecyl sulfate polyacrylamide gel electrophoresis under reduced condition. The heavy chains of all subclasses of IgG bound IgG4. The present findings suggest that the 50-kD IgG4 binding factor of human seminal plasma is the heavy chain of IgG.
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Affiliation(s)
- H M Yu
- Center for Biomedical Research, Population Council, New York, New York 10021
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19
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Liang ZG, O'Hern PA, Yavetz B, Yavetz H, Goldberg E. Human testis cDNAs identified by sera from infertile patients: a molecular biological approach to immunocontraceptive development. Reprod Fertil Dev 1994; 6:297-305. [PMID: 7530381 DOI: 10.1071/rd9940297] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Sera from patients with known or suspected immunological infertility were used to screen a human testis cDNA library. A total of 59 sera detected 38 unique cDNA inserts of which four were testis specific by Northern blot analyses. One of these is a testis-specific isoform of calpastatin. Five additional clones, although not testis specific, were found to be testis abundant. The number and type of clones identified by these human sera suggests a possible aetiology for immunologic infertility. The testis-specific clones will be further characterized to establish their usefulness as contraceptive vaccine candidates.
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Affiliation(s)
- Z G Liang
- Center for Recombinant Gamete Contraceptive Vaccinogens, Northwestern University, Evanston, IL 60208
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Abstract
Human seminal plasma contains a component that binds immunoglobulins (Ig). The Ig binding factor was purified by ammonium sulphate precipitation, preparative isoelectrofocusing and gel filtration chromatography and found to bind strongly human IgGl and mouse IgM. This seminal plasma component may possess immunosuppressive activity and may modulate the activities of the immunosurveillance system of the reproductive tract.
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Affiliation(s)
- Z G Liang
- Center for Biomedical Research, Population Council, New York, NY 10021
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21
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Maeda N, Kamada M, Daitoh T, Aono T, Futaki S, Liang ZG, Koide SS. Immunoglobulin binding factor in human seminal plasma: immunological function. Arch Androl 1993; 31:31-6. [PMID: 8373283 DOI: 10.3109/01485019308988377] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Human seminal plasma contains a protein with an estimated molecular weight of 16 kd that binds serum immunoglobulin gamma (IgG) and is named IgG binding factor (IgBF). Purified IgBF specifically suppressed pokeweed mitogen-induced lymphocyte blastogenesis, having little or no effect on lymphocyte blastogenesis stimulated with phytohemagglutinin or Concanavalin A; antibody-dependent cell-mediated cytotoxicity; natural killer cell activity; or complement-dependent cytotoxicity of antibodies against sperm. It would appear that IgBF may suppress activation of B cells in the male and female genital tract.
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Affiliation(s)
- N Maeda
- Department of Obstetrics and Gynecology, School of Medicine, University of Tokushima, Japan
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Abstract
Antibodies raised against prostatic specific antigen (PSA) and immunoglobulin binding factor (IgBF) of human seminal plasma (SP) were used to localize the antigens in various tissues by Western blot. Both antigens were found only in the prostate, including benign prostatic hypertrophy and prostatic adenocarcinoma. The polyclonal anti-PSA antibodies stained five prostatic protein bands with estimated M(r) values of 10, 14, 22, 25, and 33 kD, whereas anti-IgBF antibodies stained a single 16-kD protein. No cross-reaction occurred between the two antibodies. When anti-PSA antibodies were used an additional protein with an estimated M(r) of 35 kD was detected in the extract of benign prostatic hypertrophy, but not with normal prostate or prostatic cancer. When SP and prostatic proteins were analyzed by SDS-PAGE under nonreducing condition and immunoblot with both antibodies, immunoreactive proteins with estimated M(r) of 125 and 140 kD, respectively, were stained, suggesting that both factors may be produced as an aggregated precursor molecule. Since IgBF was found only in the prostate, this component may be useful as a marker of prostatic tissue.
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Affiliation(s)
- Z G Liang
- Center for Biomedical Research, Population Council, New York, NY 10021
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23
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Abstract
To determine the source of the immunoglobulin binding factor (IBF) in seminal plasma, extracts of testis and accessory male sex organs were prepared and analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and immunoblot. The detection reagents used were human and mouse serum Ig, monoclonal anti-Leu 11b antibodies, and polyclonal rabbit anti-IBF antibodies. Of the tissues examined, only the prostate, including benign hypertrophy and adenocarcinoma, contained IBF. These findings suggest that IBF is a secretory product of the prostate.
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Affiliation(s)
- Z G Liang
- Center for Biomedical Research, Population Council, New York, NY 10021
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24
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Abstract
Human seminal plasma, testis, seminal vesicle, epididymis, and prostate contain a component with an estimated Mr of 20 kD that binds human immunoglobulin-Fc. The factor did not bind goat-IgG-Fc, immunoglobulins of human, rat, mouse, goat, horse, or rabbit sera and did not interact with antibodies raised against Fc gamma receptors. The present findings show that this Fc binding factor in seminal plasma is a secretory product of the testis and accessory sex organs. It binds human Ig-Fc but does not meet the criteria of an Fc receptor. Additional IgG-Fc binding proteins with estimated Mr of 90, 88, and 86 kD were detected in the prostate, testis, and seminal vesicle, respectively.
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Affiliation(s)
- Z G Liang
- Center for Biomedical Research, Population Council, New York, NY 10021
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25
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Liang ZG, Kamada M, Koide SS. Structural identity of immunoglobulin binding factor and prostatic secretory protein of human seminal plasma. Biochem Biophys Res Commun 1991; 180:356-9. [PMID: 1930232 DOI: 10.1016/s0006-291x(05)81300-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The amino acid sequence of the N-terminus of the immunoglobulin binding factor of human seminal plasma was determined. The initial 30 amino acids showed complete identity with that of prostatic secretory protein, beta-microseminoprotein and beta-inhibin. In conclusion, these proteins are probably a single entity.
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Affiliation(s)
- Z G Liang
- Center for Biomedical Research, Population Council, New York, NY 10021
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26
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Liang ZG, Kamada M, Koide SS. Properties of an immunoglobulin binding factor from human seminal plasma. Biochem Int 1991; 24:1003-13. [PMID: 1723594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A soluble factor (IBF) in human seminal plasma that binds serum immunoglobulins (Ig) of various species was purified to homogeneity by ammonium sulfate precipitation, preparative isoelectrofocusing, and gel filtration chromatography. The purified IBF interacted weakly with Fc and F(ab')2 fragments and not with Fab. It interacted with anti-Leu 11b and polyclonal anti-Fc gamma RIII antibodies, but not with other anti-Fc gamma R antibodies (32.2, IV.3 and 3G8). IBF is probably a non-glycosylated protein with isoelectric point ranging from 5.1 to 5.8. The estimated Mr of the purified native IBF is 27 kD, determined by sodium dodecyl sulfate polyacrylamide electrophoresis (SDS-PAGE) under non-reducing condition. In its native form, IBF did not bind Ig or interact with anti-Fc gamma R antibodies. Following SDS-PAGE under reducing condition, IBF migrated as a single protein with an estimated Mr of 16 kD and interacted with Ig of various species and with anti-Leu 11b antibodies. When carboxymethylated, however, IBF did not bind IgG. The present results suggest that free sulfhydryl groups of IBF is required for Ig binding.
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MESH Headings
- Antibodies/immunology
- Antigens, Differentiation/chemistry
- Antigens, Differentiation/isolation & purification
- Antigens, Differentiation/metabolism
- Binding Sites
- Chemical Fractionation
- Chromatography, Gel
- Electrophoresis, Gel, Two-Dimensional
- Humans
- Immunoglobulin G/metabolism
- Isoelectric Focusing
- Oxidation-Reduction
- Receptors, Fc/chemistry
- Receptors, Fc/isolation & purification
- Receptors, Fc/metabolism
- Receptors, IgG
- Semen/chemistry
- Staining and Labeling
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Affiliation(s)
- Z G Liang
- Center for Biomedical Research, Population Council, New York, New York 10021
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27
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Wang SX, Luo AM, Liang ZG, Song JF, Wang HA, Chen YX. Preparation and characterization of monoclonal antibodies against sperm-specific lactate dehydrogenase C4. J Androl 1990; 11:319-24. [PMID: 2211339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
LDH-C4, the testis-specific isozymes of lactate dehydrogenase (LDH), is the predominant LDH isozyme in mammalian spermatozoa. Nine monoclonal antibodies against mouse LDH-C4 have been developed. These antibodies were tested for cross reactivity with LDH-C4 from human testis and with LDH-1-5 from mouse and human testes by immunoelectrophoresis, bio-dot, and western blot assays. The results showed that all monoclonal antibodies were specific to LDH-C4 only: they did not react with LDH-1-5 from mice, nor from humans. The immunologic localization of the monoclonal antibodies on capacitated sperm was observed by indirect immunofluorescent assay. On mouse sperm the antibodies were bound to the tail only, but on human sperm eight antibodies were bound to the postacrosome, some to the neck and to the mid-piece. Most of the antibodies belonged to the Ig G class.
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Affiliation(s)
- S X Wang
- Dept. of Immunology, National Research Institute for Family Planning, Beijing, China
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28
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Li WZ, Han ZY, Liang ZG, Han DW, Xin BC. [Study on follicle growth, ovulation and morphological changes of endometrium by ultrasonic and biochemical measurements]. Hua Xi Yi Ke Da Xue Xue Bao 1989; 20:107-10. [PMID: 2507439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Daily growth of the follicles before ovulation and the changes of the endometrium after ovulation were recorded in 16 spontaneous menstrual cycles by the ultrasonic and biochemical measurements. The mean diameter of the dominant follicle was 20 mm before ovulation, the mean volume 3.0 ml, and the growth rate of the follicles 1-3 mm/24 h. Ovulation occurred within 24 h of the luteinizing hormone peak and within 48 hours of the blood estrogen peak. The fact that the blood progesterone levels were higher on the day of the LH peak indicated that luteinization of the dominant follicles had already occurred prior to ovulation. Sonographic criteria of the endometrical tissue were obtained after the serial observation. According to the different sonographic appearances, the secretory phase of the endometrial tissue was divided into the early secretory phase, the middle secretory phase and the late secretory phase. The sonographic characterization of the endometrial tissue in the different phases as well as the thickness of the endometrium during the cycles were described. The clinical usefulness of the criteria of the different phases was to evaluate the subsequent luteal function, and facilitate the clinical management of the infertile women. The study confirms that ultrasound can provide a reliable measure in monitoring the follicular growth and ovulation, and observing the morphological changes of the endometrial tissue during the secretory phase. Thus the in vivo differentiation of the endometrial tissue during the secretory phase could be studied non-invasively by means of the ultrasound tissue characterization.
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29
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Deng HF, Tan TZ, Liang ZG, Xu Z, Liu ZL. [Preparation and primary application of a new renal function imaging 99mTc-MAG3]. Hua Xi Yi Ke Da Xue Xue Bao 1988; 19:279-81. [PMID: 2978155] [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: 01/03/2023]
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30
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Abstract
The induction of infertility by immunization with the sperm-specific lactate dehydrogenase, LDH-C4, suggests its use in a contraceptive vaccine. Development of an immunological contraceptive for human use, however, requires that there be no cross-reactions with somatic tissues. We have demonstrated, using enzyme-linked immunoabsorbence, solid-phase radioimmunoassay, and competitive inhibition radioimmunoassay, that antisera to LDH-C4 is specific and does not cross-react with the somatic isozymes, LDH-A4 and LDH-B4.
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