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Meng W, Shen JJ, Liang TY, Wu Q, Wang LB, Huang D, Xu FP, Bai JY, Yang XJ, Shen PC. Gubentongluo decoction alleviates NLRP3 inflammasome in IgAN cell model. All Life 2023. [DOI: 10.1080/26895293.2022.2138560] [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: 01/19/2023] Open
Affiliation(s)
- Wei Meng
- Department of Clinical Laboratory, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Jiao-Jiao Shen
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Ting-Yu Liang
- Department of Pathology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Qing Wu
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Luo-Bing Wang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Di Huang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Fei-Peng Xu
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Jia-Yuan Bai
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Xue-Jun Yang
- TCM Institute of Kidney Disease, Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
| | - Pei-Cheng Shen
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China
- Key Laboratory of Liver and Kidney Diseases, Shanghai University of Traditional Chinese Medicine, Ministry of Education, Shanghai, People’s Republic of China
- Shanghai Key Laboratory of Traditional Chinese Clinical Medicine (20DZ2272200), Shanghai, People’s Republic of China
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Wu Q, Meng W, Shen JJ, Bai JY, Wang LB, Liang TY, Huang D, Shen PC. Guben Tongluo Formula Protects LPS-induced Damage in Lamina Propria B Lymphocytes Through TLR4/MyD88/NF-κB Pathway. Curr Med Sci 2022; 42:991-999. [PMID: 36107305 DOI: 10.1007/s11596-022-2622-4] [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: 11/12/2021] [Accepted: 06/24/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The main pathological feature of immunoglobulin A nephropathy (IgAN), an autoimmune kidney disease, is the deposition of IgA immune complexes, accompanied by mesangial cell proliferation and elevated urine protein. The Guben Tongluo formula (GTF) is a traditional Chinese medicine prescription, which has predominant protective effects on IgAN. However, the therapeutic mechanism of the GTF in IgAN remains elusive. The present study aimed to determine the effects of GTF in treating IgAN via regulating the TLR4/MyD88/NF-κB pathway. METHODS In the present study, lamina propria B lymphocytes were treated with different concentrations of lipopolysaccharide (LPS) (0, 1, 5, 10 and 20 ng/mL). Flow cytometry was used to define positive CD86+CD19+ cells. CCK-8 assay was used to examine cell proliferation. RNAi was used to induce TLR4 silencing. qRT-PCR and Western blotting were used to determine gene expression. RESULTS It was found that the LPS dose-dependently increased the content of IgA and galactose-deficient IgA1 (Gd-IgA), the levels of TLR4, Cosmc, MyD88 and phosphorylated (p)-NF-κB, and the ratio of CD86+CD19+ and IgA-producing B cells. However, the TLR4 knockdown reversed the role of LPS. This suggests that TLR4 mediates the effects of LPS on lamina propria B lymphocytes. Furthermore, the GTF could dose-dependently counteract the effects of LPS and TLR4 overexpression on lamina propria B lymphocytes through the TLR4/MyD88/NF-κB pathway. CONCLUSION Collectively, these results demonstrate that the GTF can regulate the TLR4/MyD88/NF-κB pathway to treat IgAN model lamina propria B lymphocytes stimulated by LPS.
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Affiliation(s)
- Qing Wu
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Wei Meng
- Department of Clinical Laboratory, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jiao-Jiao Shen
- Department of Nursing, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jia-Yuan Bai
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Luo-Bing Wang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ting-Yu Liang
- Department of Pathology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Di Huang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Pei-Cheng Shen
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
- Key Laboratory of Liver and Kidney Diseases, Shanghai, 201203, China.
- Key Laboratory of Liver and Kidney Diseases (Shanghai University of Traditional Chinese Medicine), Ministry of Education, Shanghai, 201203, China.
- Shanghai Key Laboratory of Traditional Chinese Clinical Medicine (20DZ2272200), Shanghai, 201203, China.
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Liang TY, Chan SJ, Patra AS, Hsieh PL, Chen YA, Ma HH, Huang MH. Inactive Cu 2O Cubes Become Highly Photocatalytically Active with Ag 2S Deposition. ACS Appl Mater Interfaces 2021; 13:11515-11523. [PMID: 33634701 DOI: 10.1021/acsami.1c00342] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Previously, Cu2O cubes have been shown to remain photocatalytically inert toward methyl orange degradation even after surface decoration with ZnO, ZnS, CdS, and Ag3PO4 nanostructures. Surprisingly, when Ag2S nanoparticles are lightly deposited on Cu2O cubes as seen through scanning electron microscopy (SEM) images, the heterostructures become highly photocatalytically active. X-ray diffraction (XRD) patterns show mainly Cu2O diffraction peaks due to lightly deposited Ag2S, but Ag2S peaks can emerge with increased Ag2S deposition. X-ray photoelectron spectroscopy (XPS) analysis also supports Ag2S formation on Cu2O crystals. The Ag2S-deposited Cu2O octahedra and rhombic dodecahedra show the expected activity enhancement. Electron paramagnetic resonance (EPR) measurements, as well as electron, hole, and radical scavenger tests, all confirmed the emergence of photocatalytic activity from the Ag2S-Cu2O cubes. Photoluminescence lifetimes are shortened after Ag2S deposition. Electrochemical impedance measurements revealed a large decrease in charge transfer resistance for Cu2O cubes after the Ag2S deposition. Unexpectedly, the separately synthesized Ag2S particles are also photocatalytically inactive. No specific lattice planes of Ag2S are formed directly over the {100} face of Cu2O. Diffuse reflectance and ultraviolet photoelectron spectral data were used to construct band diagrams of different Cu2O crystals and Ag2S nanoparticles. A Z-scheme charge transfer mechanism may be involved at the heterojunction interface to promote charge carrier separation. However, to explain the sudden appearance of photocatalytic activity from the Ag2S-deposited Cu2O cubes, a large change in the {100} surface band bending after Ag2S deposition should be used. This work illustrates that an unusual photocatalytic outcome is possible to semiconductor heterojunctions, where two photocatalytically inert components can become highly active when joined together.
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Affiliation(s)
| | | | | | | | - Yi-An Chen
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
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4
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Liang B, Yang SY, Chen JM, Liang TY, Zhao HX, Ding XH, Wang F, Feng ES. Diagnostic value of real-time PCR of brain mass lesion in HIV-associated toxoplasmic encephalitis: a case series. Parasit Vectors 2020; 13:564. [PMID: 33172484 PMCID: PMC7653695 DOI: 10.1186/s13071-020-04443-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 10/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Toxoplasmic encephalitis (TE) is a leading cause of brain mass lesions (BML) in human immunodeficiency viruses (HIV)-infected patients. Yet, so far, no accurate diagnostic approach for TE has been developed. Herein, we presented a case series (9 HIV-infected patients with TG confirmed by RT-PCR of BML) to assess the diagnostic value of reverse transcription-polymerase chain reaction (RT-PCR) on TE. METHODS A total of 9 HIV-infected patients with TE confirmed by RT-PCR of BML were included in this study. Clinical data, including clinical symptoms, blood and CSF analysis, neuroimaging features, histopathological characteristics, treatment, and prognosis, were assessed in all patients. According to the results of RT-PCR of BML, all the patients received oral administration of trimethoprim-sulfamethoxazole combined with antiretroviral therapy (ART). Patients were followed up by telephone or outpatient service. RESULTS There were 8 male and 1 female patients; their age ranged from 26 to 56 years-old. The main symptom was intracranial hypertension (6/9). Six patients presented multiple brain lesions, which were mainly located in the supratentorial area (7/9). CD4+ count ranged from 11 to 159 cells/μl (median 92 cells/μl), and serological HIV viral load 0-989190 copies/ml (median 192836 copies/ml). IgG and IgM against serum TG were positive in 7 and 1 patients, respectively. Moreover, regarding CSF, IgG against TG was positive in 3 patients, while all patients were negative for IgM. The neuroimaging features on MRI showed no specificity. Four patients were diagnosed with TE by histopathological findings. After receiving anti-Toxoplasma therapy, 8 (8/9) patients improved clinically to a considerable extent. CONCLUSIONS The application of RT-PCR of BML, together with conventional methods, may significantly improve the diagnostic efficiency of TE.
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Affiliation(s)
- Bo Liang
- Department of Neurosurgery, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Si-Yuan Yang
- Laboratory of Infectious Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, 10015, China
| | - Jia-Min Chen
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing, 10015, China
| | - Ting-Yu Liang
- Department of Neurosurgery, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Hong-Xin Zhao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, 10015, China
| | - Xing-Huan Ding
- Department of Neurosurgery, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Fang Wang
- Department of Neurosurgery, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - En-Shan Feng
- Department of Neurosurgery, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China.
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Lu FF, Wang HY, He XZ, Liang TY, Wang W, Hu HM, Wu F, Liu YW, Zhang SZ. Prognostic value of ion channel genes in Chinese patients with gliomas based on mRNA expression profiling. J Neurooncol 2017; 134:397-405. [DOI: 10.1007/s11060-017-2539-0] [Citation(s) in RCA: 4] [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] [Received: 08/23/2016] [Accepted: 06/25/2017] [Indexed: 01/17/2023]
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6
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Wang HY, Wang W, Liu YW, Li MY, Liang TY, Li JY, Hu HM, Lu Y, Yao C, Ye YY, Wang YZ, Zhang SZ. Role of KCNB1 in the prognosis of gliomas and autophagy modulation. Sci Rep 2017; 7:14. [PMID: 28144039 PMCID: PMC5428316 DOI: 10.1038/s41598-017-00045-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 09/09/2016] [Accepted: 12/20/2016] [Indexed: 12/13/2022] Open
Abstract
Increasing evidence suggests that ion channel genes play an important role in the progression of gliomas. However, the mechanisms by which ion channel genes influence the progression of glioma are not fully understood. We identified KCNB1 as a novel ion gene, associated with malignant progression and favorable overall survival (OS) and progression-free survival (PFS) in glioma patients from three datasets (CGGA, GSE16011 and REMBRANDT). Moreover, we characterized a novel function of autophagy induction accompanied by increased apoptosis and reduced proliferation and invasion of glioma cells for KCNB1. KEGG pathway analysis and in vitro studies suggested that the ERK pathway is involved in KCNB1-mediated regulation of autophagy, which was confirmed by inhibition of KCNB1-induced autophagy by using a selective ERK1/2 inhibitor (U0126) or siERK1/2. In vivo studies showed that KCNB1 induced autophagy while inhibiting tumor growth and increasing survival. Overall, our studies define KCNB1 as a novel prognostic factor for gliomas that exerts its tumor suppressive function through autophagy induction.
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Affiliation(s)
- Hao-Yuan Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Wen Wang
- Chinese Glioma Cooperative Group (CGCG), Beijing, China.,Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yan-Wei Liu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China.,Department of Radiation Therapy, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ming-Yang Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ting-Yu Liang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Ji-Ye Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Hui-Min Hu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Yang Lu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Chen Yao
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yong-Yi Ye
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yong-Zhi Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China. .,Chinese Glioma Cooperative Group (CGCG), Beijing, China. .,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
| | - Shi-Zhong Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China. .,The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
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Wang HY, Tang K, Liang TY, Zhang WZ, Li JY, Wang W, Hu HM, Li MY, Wang HQ, He XZ, Zhu ZY, Liu YW, Zhang SZ. The comparison of clinical and biological characteristics between IDH1 and IDH2 mutations in gliomas. J Exp Clin Cancer Res 2016; 35:86. [PMID: 27245697 PMCID: PMC4888668 DOI: 10.1186/s13046-016-0362-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/17/2016] [Indexed: 12/13/2022]
Abstract
Background Mutations in isocitrate dehydrogenase 1 (IDH1) and isocitrate dehydrogenase 2 (IDH2) are frequent in low-grade gliomas and secondary glioblastomas (sGBM). Because they yield the same oncometabolite, D-2-hydroxyglutarate, they are often treated as equivalent and pooled. The objective of this study was to provide insight into the differences between IDH1 and IDH2 mutant gliomas. Methods To investigate the different clinical and molecular characterization between IDH1 mutant and IDH2 mutant gliomas, we studied 811 patients with IDH1 mutations, IDH2 mutations and IDH1/2 wild-type. In addition, whole-transcriptome sequencing and DNA methylation data were used to assess the distribution of genetic changes in IDH1 and IDH2 mutant gliomas in a Chinese population-based cohort. Results Among 811 gliomas in our cohort, 448 cases (55.2 %) harbored an IDH1 mutation, 18 cases (2.2 %) harbored an IDH2 mutation and 345 cases (42.6 %) harbored an IDH1/2 wild-type. We found that IDH1 and IDH2 are mutually exclusive in gliomas, and IDH2 mutations are mutually exclusive with PTEN, P53 and ATRX mutations. Patients with IDH2 mutations had a higher frequency of 1p/19q co-deletion (p < 0.05) than IDH1 mutant patients. In addition, a Gene Set Enrichment Analysis (GSEA) showed that IDH2 mutant gliomas were associated with the oxidative phosphorylation gene set, and the four most representative biological processes for genes commonly altered by hypermethylation in IDH2 mutant gliomas were the regulation of cell proliferation, cell motion, cell migration and response to hypoxia. Patients with IDH2 mutant gliomas exhibited longer Overall survival (OS) (p < 0.05) and longer Progression-free survival (PFS) (p < 0.05) than patients with IDH1/2 wild-type gliomas. However, their OS and PFS did not differ from that of IDH1 mutant patients. Conclusions Our study revealed an intrinsic distinction between IDH1 and IDH2 mutant gliomas, and these mutations should be considered separately because their differences could have implications for the diagnosis and treatment of IDH1/2 mutant gliomas.
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Affiliation(s)
- Hao-Yuan Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, 253# Gongye Road, Guangzhou, China.,The National Key Clinical Specialty. The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Kai Tang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No. 6 TiantanXili, Dongcheng District, Beijing, 100050, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Ting-Yu Liang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Wei-Zhong Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, 253# Gongye Road, Guangzhou, China.,The National Key Clinical Specialty. The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Ji-Ye Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Center for Brain Disorders Research, Capital Medical University, Beijing, 100069, China
| | - Wen Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No. 6 TiantanXili, Dongcheng District, Beijing, 100050, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Hui-Min Hu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Ming-Yang Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Cooperative Group (CGCG), Beijing, China
| | - Hui-Qing Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, 253# Gongye Road, Guangzhou, China.,The National Key Clinical Specialty. The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xiao-Zheng He
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, 253# Gongye Road, Guangzhou, China.,The National Key Clinical Specialty. The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Zhi-Yuan Zhu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, 253# Gongye Road, Guangzhou, China.,The National Key Clinical Specialty. The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yan-Wei Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No. 6 TiantanXili, Dongcheng District, Beijing, 100050, China. .,Beijing Neurosurgical Institute, Capital Medical University, Beijing, China. .,Chinese Glioma Cooperative Group (CGCG), Beijing, China.
| | - Shi-Zhong Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, 253# Gongye Road, Guangzhou, China. .,The National Key Clinical Specialty. The Engineering Technology Research Center of Education Ministry of China Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
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Udar NS, Xu S, Bay JO, Dandekar SS, Patel N, Chen X, Liang TY, Uhrhammer N, Klisak I, Shizuya H, Yang H, Samara G, Nelissen J, Sawicki M, Concannon P, Gatti RA. Physical map of the region surrounding the ataxia-telangiectasia gene on human chromosome 11q22-23. Neuropediatrics 1999; 30:176-80. [PMID: 10569208 DOI: 10.1055/s-2007-973487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Ataxia telangiectasia (A-T) is an autosomal recessive disease affecting multiple systems, including the development of the cerebellum and thymus. This results in a progressive cerebellar ataxia with onset between 1-3 years, telangiectasia occurs within the subsequent 3-5 years. We localized the A-T gene by linkage analysis to chromosome 11q22-23, between the markers D11S384, and D11S535, and constructed a series of contigs using three BACs and twelve cosmids, spanning a region of approximately 400 kb. We developed a set of sequence-tagged site (STS) markers from the ends of the BACs and cosmids. The A-T gene was isolated from within this region. It is now possible to precisely orient specific BACs, cosmids, and STSs with respect to the exons of the A-T gene (ATM). We anticipate that this information will be useful for further studies of functional domains and regulatory elements within the ATM gene, as well as for other genes in this region. In addition, these clones can be used for FISH studies of deletions, translocations and for loss of heterozygosity in various tumors.
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Affiliation(s)
- N S Udar
- Jules Stein Eye Institute, UCLA School of Medicine, Los Angeles 90095-1732, USA
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Farb A, Burke AP, Tang AL, Liang TY, Mannan P, Smialek J, Virmani R. Coronary plaque erosion without rupture into a lipid core. A frequent cause of coronary thrombosis in sudden coronary death. Circulation 1996; 93:1354-63. [PMID: 8641024 DOI: 10.1161/01.cir.93.7.1354] [Citation(s) in RCA: 729] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Coronary thrombosis has been reported to occur most frequently in lipid-rich plaques with rupture of a thin fibrous cap and contact of the thrombus with a pool of extracellular lipid. However, the frequency of coronary artery thrombosis with or without fibrous cap rupture in sudden coronary death is unknown. In this study, we compared the incidence and morphological characteristics of coronary thrombosis associated with plaque rupture versus thrombosis in eroded plaques without rupture. METHODS AND RESULTS Fifty consecutive cases of sudden death due to coronary artery thrombosis were studied by histology and immunohistochemistry. Plaque rupture of a fibrous cap with communication of the thrombus with a lipid pool was identified in 28 cases. Thrombi without rupture were present in 22 cases, all of which had superficial erosion of a proteoglycan-rich plaque. The mean age at death was 53 +/- 10 years in plaque rupture cases versus 44 +/- 7 years in eroded plaques without rupture (P < .02). In the plaque-rupture group, 5 of 28 (18%) were women versus 11 of 22 (50%) with eroded plaques (P = .03). The mean percent luminal area stenosis was 78 +/- 12% in plaque rupture and 70 +/- 11% in superficial erosion (P < .03). Plaque calcification was present in 69% of ruptures versus 23% of erosions (P < .002). In plaque ruptures, the fibrous cap was infiltrated by macrophages in 100% and T cells in 75% of cases compared with 50% (P < .0001) and 32% (P < .004), respectively, in superficial erosions. Clusters of smooth muscle cells adjacent to the thrombi were present in 95% of erosions versus 33% of ruptures (P < .0001). HLA-DR expression was more often seen in macrophages and T cells in ruptures (25 of 28 cases) compared with expression in macrophages in superficial erosion arteries (8 of 22 cases, P = .0002). CONCLUSIONS Erosion of proteoglycan-rich and smooth muscle cell-rich plaques lacking a superficial lipid core or plaque rupture is a frequent finding in sudden death due to coronary thrombosis, comprising 44% of cases in the present study. These lesions are more often seen in younger individuals and women, have less luminal narrowing and less calcification, and less often have foci of macrophages and T cells compared with plaque ruptures.
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Affiliation(s)
- A Farb
- Department of Cardiovascular Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000, USA
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Syvanen M, Hopkins JD, Griffin TJ, Liang TY, Ippen-Ihler K, Kolodner R. Stimulation of precise excision and recombination by conjugal proficient F'plasmids. Mol Gen Genet 1986; 203:1-7. [PMID: 2872578 DOI: 10.1007/bf00330376] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Large F plasmids such as F'128 stimulate precise excision of the transposons Tn5 and Tn10 in E. coli K12. This stimulation occurs when the transposons are either on the F'128 plasmid or the bacterial chromosome. Stimulation of precise excision is dependent upon conjugal transfer proficient F'plasmids. Tra- mutations which are defective in conjugal transfer negate this F'128 plasmid stimulation effect. F'128 traS mutations, which are surface exclusion defective and thus permit matings between male cells, thereby increasing conjugal transfer, increase the F plasmid stimulation effect. When the F' plasmid is present in a cell with the small plasmid, pRS31, carrying the traS to traZ region of F, stimulation of precise excision is no longer observed. This complementation-like activity by pRS31 is abolished by a Tn5 insertion in the traS gene. Data are presented supporting the notion that F' plasmid stimulation of precise excision occurs in the recipient during conjugal transfer. F'128 traS also stimulates recA-dependent recombination between DNA sequences on the small, nontransferrable plasmid pRDK41, DNA sequences that are unrelated to those of the F plasmid. The F'plasmid stimulation of precise excision of Tn5 is not seen with F+ but only with certain F's with large insertions of chromosomal DNA.
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Hopkins JD, Clements MB, Liang TY, Isberg RR, Syvanen M. Recombination genes on the Escherichia coli sex factor specific for transposable elements. Proc Natl Acad Sci U S A 1980; 77:2814-8. [PMID: 6248868 PMCID: PMC349495 DOI: 10.1073/pnas.77.5.2814] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The Escherichia coli sex factor stimulates precise excision of transposons Tn5 and Tn10 from sites either within the bacterial chromosome or within the factor itself. We have isolated two kinds of mutations that affect this activity. The ferA mutations eliminate the stimulation; the ferB mutations enhance it in the presence of FerA+. We conclude that ferA defines a sex factor gene that stimulates precise excision. The ferB mutations also specifically increase the rate of recombination between two IS3 elements on F' lac-pro (F'128) in a reaction that requires the product of recA. The stimulation of this recombination by ferB also requires an active ferA gene, which implies that the ferA gene stimulates this reaction as well as precise excision. A ferA mutation was mapped at 84.2 kilobases on the F factor, and a ferB mutation was mapped at 82.5 kilobases. The fer mutants were obtained by an approach that permits the isolation of mutants affecting precise excision.
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