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Wang Y, Hu YW, Yin XL, Deng Y. [Acute macular neuroretinopathy: a case report]. Zhonghua Yan Ke Za Zhi 2023; 59:937-939. [PMID: 37936362 DOI: 10.3760/cma.j.cn112142-20230510-00194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
A 16-year-old female patient experienced a rapid decline in bilateral visual acuity accompanied by central scotomas for 5 days following coronavirus disease 2019 infection. Ocular examination revealed findings consistent with acute macular neuroretinopathy. Structural en face imaging using optical coherence tomography demonstrated a wedge-shaped lesion with low reflectivity directed towards the fovea in both eyes. B-scan images revealed localized hyperreflective bands involving the outer nuclear layer and photoreceptor layer, with discontinuity of the ellipsoid zone. Based on clinical presentation and examination findings, a diagnosis of bilateral acute macular neuroretinopathy was established.
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Affiliation(s)
- Y Wang
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Y W Hu
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - X L Yin
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Y Deng
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
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Fang Y, Zhang Y, Li Z, Sang SW, Yang XR, Zhang TC, Yin XL, Man JY, Lyu M. [Shandong hilly rural natural population cohort study: method and baseline characteristics of survey subjects]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1789-1795. [PMID: 36444464 DOI: 10.3760/cma.j.cn112338-20220404-00258] [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: 06/16/2023]
Abstract
Objective: To understand the study method and the baseline characteristics of the survey subjects of Shandong hilly rural natural population cohort study, and provide reference for the research of the prevalence and risk factors of common chronic and non-communicable diseases. Methods: Baseline survey, including questionnaire survey, physical examination, biochemical index examination and blood and saliva collection, was conducted in local residents aged 20-79 years in Kongcun and Xiaozhi townships of Pingyin county, Shandong province, from 2017 to 2019. Shandong hilly rural natural population cohort was established and main baseline characteristics of the study subjects were statistically analyzed. Results: A total of 10 296 study subjects aged 54.45 years were included in the study, in whom 40.6% were males. Among the study subjects, 88.3% had education level of junior high school or below, 62.1% were famers, and 90.7% were married. Smokers accounted for 45.6% of men and 0.9% of women, and drinkers accounted for 65.8% of men and 3.0% of women, respectively. The self-reported rates of hypertension, diabetes, coronary heart disease, stroke and tumors were 19.8%, 3.2%, 2.8%, 2.7% and 1.2%, respectively. Conclusion: The Shandong hilly rural cohort natural population study provided important evidence for assessing the risk for common chronic and non-communicable diseases and disease prevention and control in hilly rural areas.
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Affiliation(s)
- Y Fang
- Department of Epidemiology and Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| | - Y Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan 250012, China Clinical Research Center of Shandong University, Ji'nan 250012, China
| | - Z Li
- Department of Epidemiology and Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| | - S W Sang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan 250012, China Clinical Research Center of Shandong University, Ji'nan 250012, China
| | - X R Yang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan 250012, China Clinical Research Center of Shandong University, Ji'nan 250012, China
| | - T C Zhang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan 250012, China Clinical Research Center of Shandong University, Ji'nan 250012, China
| | - X L Yin
- Department of Epidemiology and Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| | - J Y Man
- Department of Epidemiology and Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| | - M Lyu
- Department of Epidemiology and Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan 250012, China Clinical Research Center of Shandong University, Ji'nan 250012, China
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Zhang WW, Xue R, Mi TY, Shen XM, Li JC, Li S, Zhang Y, Li Y, Wang LX, Yin XL, Wang HL, Zhang YZ. Propofol ameliorates acute postoperative fatigue and promotes glucagon-regulated hepatic gluconeogenesis by activating CREB/PGC-1α and accelerating fatty acids beta-oxidation. Biochem Biophys Res Commun 2022; 586:121-128. [PMID: 34839190 DOI: 10.1016/j.bbrc.2021.11.073] [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: 10/10/2021] [Revised: 11/12/2021] [Accepted: 11/20/2021] [Indexed: 11/02/2022]
Abstract
Postoperative fatigue (POF) is the most common and long-lasting complication after surgery, which brings heavy burden to individuals and society. Recently, hastening postoperative recovery receives increasing attention, but unfortunately, the mechanisms underlying POF remain unclear. Propofol is a wildly used general anesthetic in clinic, and inspired by the rapid antidepressant effects induced by ketamine at non-anesthetic dose, the present study was undertaken to investigate the anti-fatigue effects and underlying mechanisms of propofol at a non-anesthetic dose in 70% hepatectomy induced POF model in rats. We first showed here that single administration of propofol at 0.1 mg/kg ameliorated acute POF in hepatectomy induced POF rats. Based on metabonomics analysis, we hypothesized that propofol exerted anti-fatigue activity in POF rats by facilitating free fatty acid (FFA) oxidation and gluconeogenesis. We further confirmed that propofol restored the deficit in FFA oxidation and gluconeogenesis in POF rats, as evidenced by the elevated FFA utilization, acetyl coenzyme A content, pyruvic acid content, phosphoenolpyruvic acid content, hepatic glucose output and glycogen storage. Moreover, propofol stimulated glucagon secretion and up-regulated expression of cAMP-response element binding protein (CREB), phosphorylated CREB, peroxlsome prolifeator-activated receptor-γ coactivator-1α (PGC-1α), phosphoenolpyruvate carboxykinade1 and carnitine palmitoltransferase 1A. In summary, our study suggests for the first time that propofol ameliorates acute POF by promoting glucagon-regulated gluconeogenesis via CREB/PGC-1α signaling and accelerating FFA beta-oxidation.
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Affiliation(s)
- W W Zhang
- Department of Anesthesiology, The 8th Medical Center, Chinese PLA General Hospital, Beijing, China; Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China; Hebei North University, Heibei, China
| | - R Xue
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - T Y Mi
- Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, United States
| | - X M Shen
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - J C Li
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - S Li
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - Y Zhang
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - Y Li
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - L X Wang
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - X L Yin
- Department of Anesthesiology, The 8th Medical Center, Chinese PLA General Hospital, Beijing, China; Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China; Hebei North University, Heibei, China
| | - H L Wang
- Department of Anesthesiology, The 8th Medical Center, Chinese PLA General Hospital, Beijing, China; Hebei North University, Heibei, China.
| | - Y Z Zhang
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China.
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Chen H, Zhang TC, Yin XL, Man JY, Yang XR, Lu M. Magnitude and temporal trend of acne vulgaris burden in 204 countries and territories from 1990 to 2019: A analysis from the Global Burden of Disease Study 2019. Br J Dermatol 2021; 186:673-683. [PMID: 34758111 DOI: 10.1111/bjd.20882] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Acne vulgaris is widespread across the world. Mapping the latest magnitudes and temporal trends of acne vulgaris provides the essential foundation for targeted public policies at the national, regional, and global levels. METHODS Complying with the framework of the Global Burden of Disease 2019 Study, the incidence, prevalence and disability-adjusted life years (DALYs) on acne vulgaris were retrieved in 204 countries and regions from 1990 to 2019. The average annual percentage change was calculated to depict the temporal trends in age-standardized rates (ASRs) of acne vulgaris burden by region, sex, and age. RESULTS Globally, 117.4 [95% uncertainty interval (UI): 103.0, 133.7] million incident cases of acne vulgaris, 231.2 million (95% UI: 208.2, 255.5) prevalent cases and 5.0 (95% UI: 3.0, 7.9) million DALYs were estimated in 2019, with about 47% increase compared with 1990. Moreover, the overall ASRs of acne vulgaris increased by around 0.55% annually over the past three decades. We observed huge disparities in ASRs of acne vulgaris with its changing trends in sex, location, and age. The ASR of acne vulgaris among women was around 1.3 times that of men, but the gender difference was narrowed for the pronounced increase among men. The ASRs of acne vulgaris were higher in high-income regions, but the increasing trend was more pronounced in other regions. CONCLUSION The burden rate of acne vulgaris continues to increase in almost all countries. Understanding the specific characteristics of acne vulgaris burden is essential to formulate more effective and targeted interventions for controlling acne burden.
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Affiliation(s)
- H Chen
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China.,Clinical Research Center, Shandong University, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - T C Zhang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China.,Clinical Research Center, Shandong University, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - X L Yin
- Department of Epidemiology and Health Statistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - J Y Man
- Department of Epidemiology and Health Statistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - X R Yang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China.,Clinical Research Center, Shandong University, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - M Lu
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China.,Clinical Research Center, Shandong University, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Epidemiology and Health Statistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
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Shen R, Yin XL, Li JP, Peng JJ, Yi T, Jia HK, Xu HX, Zeng HQ, Zhou Y. [Myeloid sarcoma of the small intestine with CBFβ-MYH11 as the primary manifestation of acute myeloid leukemia with inv(16)and+22: a case report]. Zhonghua Xue Ye Xue Za Zhi 2021; 41:873. [PMID: 33190452 PMCID: PMC7656070 DOI: 10.3760/cma.j.issn.0253-2727.2020.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- R Shen
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - X L Yin
- Department of hematology, 923 hospital of the PLA joint logistic support force, Nanning 530021, China
| | - J P Li
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - J J Peng
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - T Yi
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - H K Jia
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - H X Xu
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - H Q Zeng
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
| | - Y Zhou
- Department of Hematology, Changsha Central Hospital, Nanhua University, Changsha 410004, China
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Leonard AFC, Yin XL, Zhang T, Hui M, Gaze WH. A coliform-targeted metagenomic method facilitating human exposure estimates to Escherichia coli-borne antibiotic resistance genes. FEMS Microbiol Ecol 2019; 94:4875920. [PMID: 29471354 DOI: 10.1093/femsec/fiy024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 02/16/2018] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial resistance and the spread of antibiotic resistance genes (ARGs) pose a threat to human health. Community-acquired infections resistant to treatment with first-line antibiotics are increasing, and there are few studies investigating environmental exposures and transmission. Our objective is to develop a novel targeted metagenomic method to quantify the abundance and diversity of ARGs in a faecal indicator bacterium, and to estimate human exposure to resistant bacteria in a natural environment. Sequence data from Escherichia coli metagenomes from 13 bathing waters in England were analysed using the ARGs Online Analysis Pipeline to estimate the abundance and diversity of resistance determinants borne by this indicator bacterium. These data were averaged over the 13 sites and used along with data on the levels of E. coli in English bathing waters in 2016 and estimates of the volume of water that water users typically ingest in an average session of their chosen activityto quantify the numbers of ARGs that water users ingest. Escherichia coli in coastal bathing waters were found to harbour on average 1.24 ARGs per cell. Approximately 2.5 million water sports sessions occurred in England in 2016 that resulted in water users ingesting at least 100 E. coli-borne ARGs.
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Affiliation(s)
- A F C Leonard
- European Centre for Environment and Human Health, University of Exeter Medical School, Knowledge Spa, Royal Cornwall Hospital, Truro, TR1 3HD, UK
| | - X L Yin
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - T Zhang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - M Hui
- Department of Microbiology, The Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing Street, Shatin, New Territories, Hong Kong
| | - W H Gaze
- European Centre for Environment and Human Health, University of Exeter Medical School, Knowledge Spa, Royal Cornwall Hospital, Truro, TR1 3HD, UK
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Liu YC, Zhao K, Liu Y, Yin XL, Labat D. Analysis of the impact of precipitation and temperature on the streamflow of the Ürümqi River, Tianshan Mountain, China. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1755-1315/191/1/012135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dai HL, Gong YF, Guang XF, Yin XL. ASSA14-07-01 The study of the relationship between serum Angiotensin-(1–7) and cardiac remodelling in patients with congenital heart disease. Heart 2015. [DOI: 10.1136/heartjnl-2014-307109.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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9
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Pace MN, Mayes MA, Jardine PM, McKay LD, Yin XL, Mehlhorn TL, Liu Q, Gürleyük H. Transport of Sr2+ and SrEDTA2- in partially-saturated and heterogeneous sediments. J Contam Hydrol 2007; 91:267-87. [PMID: 17197052 DOI: 10.1016/j.jconhyd.2006.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Revised: 11/03/2006] [Accepted: 11/09/2006] [Indexed: 05/13/2023]
Abstract
Strontium-90 has migrated deep into the unsaturated subsurface beneath leaking storage tanks in the Waste Management Areas (WMA) at the U.S. Department of Energy's (DOE) Hanford Reservation. Faster than expected transport of contaminants in the vadose zone is typically attributed to either physical hydrologic processes such as development of preferential flow pathways, or to geochemical processes such as the formation of stable, anionic complexes with organic chelates, e.g., ethylenediaminetetraacetic acid (EDTA). The goal of this paper is to determine whether hydrological processes in the Hanford sediments can influence the geochemistry of the system and hence control transport of Sr(2+) and SrEDTA(2-). The study used batch isotherms, saturated packed column experiments, and an unsaturated transport experiment in an undisturbed core. Isotherms and repacked column experiments suggested that the SrEDTA(2-) complex was unstable in the presence of Hanford sediments, resulting in dissociation and transport of Sr(2+) as a divalent cation. A decrease in sorption with increasing solid:solution ratio for Sr(2+) and SrEDTA(2-) suggested mineral dissolution resulted in competition for sorption sites and the formation of stable aqueous complexes. This was confirmed by detection of MgEDTA(2-), MnEDTA(2-), PbEDTA(2-), and unidentified Sr and Ca complexes. Displacement of Sr(2+) through a partially-saturated undisturbed core resulted in less retardation and more irreversible sorption than was observed in the saturated repacked columns, and model results suggested a significant reservoir (49%) of immobile water was present during transport through the heterogeneous layered sediments. The undisturbed core was subsequently disassembled along distinct bedding planes and subjected to sequential extractions. Strontium was unequally distributed between carbonates (49%), ion exchange sites (37%), and the oxide (14%) fraction. An inverse relationship between mass wetness and Sr suggested that sandy sediments of low water content constituted the immobile flow regime. Our results suggested that the sequestration of Sr(2+) in partially-saturated, heterogeneous sediments was most likely due to the formation of immobile water in drier regions having low hydraulic conductivities.
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Affiliation(s)
- M N Pace
- Environmental Sciences Division, Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, TN 37831-6038, USA
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Abstract
With vast territory and abundant biomass resources China appears to have suitable conditions to develop biomass utilization technologies. As an important decentralized power technology, biomass gasification and power generation (BGPG) has a potential market in making use of biomass wastes. In spite of the relatively high cost for controlling secondary pollution by wastewater, BGPG is economically feasible and can give a financial return owing to the low price of biomass wastes and insufficient power supply at present in some regions of China. In this work, experimental data from 1 MW-scale circulating fluidized bed (CFB) BGPG plants constructed recently in China were analyzed; and it was found that the unit capital cost of BGPG is only 60-70% of coal power station and its operation cost is much lower than that of conventional power plants. However, due to the relatively low efficiency of small-scale plant, the current BGPG technology will lose its economic attraction when its capacity is smaller than 160 kW or the price of biomass is higher than 200 Yuan RMB/ton. The development of medium-scale BGPG plants, with capacity ranging from 1000 to 5000 kW, is recommended; as is the demonstration of BGPG technology in suitable enterprises (e.g. rice mill and timber mill) in developing countries where large amounts of biomass wastes are available so that biomass collection and transportation can be avoided and the operation cost can be lowered.
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Affiliation(s)
- C Z Wu
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences.
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Abstract
OBJECT The loss of genetic material from specific chromosome loci is a common feature in the oncogenesis of tumors and is often indicative of the presence of important tumor suppressor genes at these loci. Recent molecular genetic analyses have demonstrated frequent loss of chromosomes 10q, 11, and 16 in medulloblastomas. The aim of this study was to localize the targeted deletion regions on the three aforementioned chromosomes in medulloblastomas. METHODS Loss of heterozygosity (LOH) was examined on chromosomes 10q, 11, and 16 in a series of 22 primary and two recurrent medulloblastomas by using polymerase chain reaction-based microsatellite analysis. The DNA extracted from the tumors and corresponding normal blood samples were amplified independently in the presence of radioactively labeled microsatellite primers, resolved by denaturing gel electrophoresis and processed for autoradiography. The DNA obtained from control blood samples that displayed allelic heterozygosity at a given microsatellite locus were considered informative. Loss of heterozygosity was inferred when the allelic signal intensity of the tumor sample was reduced by at least 40%, relative to that of the constitutional control. The LOH analysis demonstrated that deletions of chromosomes 10q, 11p, and 16q are recurrent genetic events in the development of medulloblastomas. Three subchromosomal regions of loss have been identified and are localized to the deleted in malignant brain tumors 1 [DMBT1] gene site on chromosomes 10q25, 11p13-11p15.1, and 16q24.1-24.3. CONCLUSIONS These results indicate that DMBT1 is closely associated with the oncogenesis of medulloblastomas and highlight regions of loss on chromosomes 11p and 16q for further fine mapping and cloning of candidate tumor suppressor genes that are important for the genesis of medulloblastoma.
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Affiliation(s)
- X L Yin
- Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong
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Hui AB, Lo KW, Yin XL, Poon WS, Ng HK. Detection of multiple gene amplifications in glioblastoma multiforme using array-based comparative genomic hybridization. J Transl Med 2001; 81:717-23. [PMID: 11351043 DOI: 10.1038/labinvest.3780280] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.8] [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: 11/09/2022] Open
Abstract
We have used a new method of genomic microarray to investigate amplification of oncogenes throughout the genome of glioblastoma multiforme (GBM). Array-based comparative genomic hybridization (array CGH) allows for simultaneous examination of 58 oncogenes/amplicons that are commonly amplified in various human cancers. Amplification of multiple oncogenes in human cancers can be rapidly determined in a single experiment. Tumor DNA and normal control DNA were labeled by nick translation with green- and red-tagged nucleotides, respectively. Instead of hybridizing to normal metaphase chromosomes in conventional comparative genomic hybridization (CGH), the probes of the mixed fluorescent labeled DNA were applied to genomic array templates comprised of P1, PAC, and BAC clones of 58 target oncogenes. The baseline for measuring deviations was established by performing a series of independent array CGH using test and reference DNA made from normal individuals. In the present study, we examined fourteen GBMs (seven cell lines and seven tumours) with CGH and array CGH to reveal the particular oncogenes associated with this cancer. High-level amplifications were identified on the oncogenes/amplicons CDK4, GLI, MYCN, MYC, MDM2, and PDGFRA. The highest frequencies of gains were detected on PIK3CA (64.3%), EGFR (57.1%), CSE1L (57.1%), NRAS (50%), MYCN (42.9%), FGR (35.7%), ESR (35.7%), PGY1 (35.7%), and D17S167 (35.7%). These genes are suggested to be involved in the GBM tumorigenesis.
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Affiliation(s)
- A B Hui
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, China
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13
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Liu D, Lu JS, Yin XL. [Role of pp60c-src in mitogen-activated protein kinase activation of vascular smooth muscle cells]. Sheng Li Xue Bao 2000; 52:483-6. [PMID: 11941412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The effect of pp60c-src on mitogen-activated protein kinase (MAPK) activation induced by angiotensin II (Ang II) in vascular smooth muscle cells (VSMCs) was observed to explore the signal transduction process of VSMCs proliferation mediated by Ang II. Following transfection of the synthetic antisense c-src oligodeoxynucleotides (ODNs) wrapped in lipofectin into cultured rat VSMCs, pp60c-src content markedly decreased, pp60c-src kinase activity was only 14.4% of control, while MAPK activity was not significantly changed (P>0.05). When these transfected VSMCs were further stimulated by Ang II, the increase in MAPK activity was only 1.6% of control. These data suggest that pp60c-src is needed for MAPK activation in VSMCs stimulated by Ang II, and pp60c-src may be an important signaling molecule in abnormal proliferation of VSMCs.
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Affiliation(s)
- D Liu
- Department of Cardiology, The Second Affiliated Hospital to Zhejiang University Medical School, Hangzhou 310006.
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14
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Abstract
OBJECT Central neurocytomas are rare neuronal tumors commonly found in the intraventricular regions. Little is known about the tumorigenesis of these neoplasms. The aim of this study was to provide an overview of genetic imbalances in central neurocytomas. METHODS In this study, comparative genomic hybridization was used to identify DNA sequence copy number changes (losses and gains) in a series of 10 central neurocytomas. Tumor DNA and normal reference DNA were differentially labeled and allowed to cohybridize to normal metaphase chromosomes. After hybridization and fluorescent staining of the bound DNA, regions of gain or of loss of DNA sequences were detected as changes in the tumor/normal fluorescence intensity ratio along the target metaphase chromosomes. A gain of DNA sequence was detected in chromosomes 2p, 10q, and 18q. A protooncogene, Bcl2, which maps to 18q21, was evaluated by immunohistochemical analysis to determine its role in the formation of central neurocytomas. CONCLUSIONS In this study the authors identified recurrent genetic changes on chromosomes 2p, 10q, and 18q in central neurocytomas and highlighted chromosomal regions for additional mapping and cloning of candidate genes that are important in the development of central neurocytomas.
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Affiliation(s)
- X L Yin
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong
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15
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Xu JM, Yin XL, Chen YM, Qi HM, Li CF, Shen LY, Chen WZ, Wang CG. [Plasma drug concentration and cardiac function in arrhythmic patients during continuous drip of changrolin]. Zhongguo Yao Li Xue Bao 1987; 8:227-31. [PMID: 2959017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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