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Cheng YP, Kong DF, Zhang J, Lyu ZQ, Chen ZG, Xiong HW, Lu Y, Luo QS, Lyu QY, Zhao J, Wen Y, Wan J, Lu FF, Lu JH, Zou X, Zhang Z. [Epidemiological characteristics of a 2019-nCoV outbreak caused by Omicron variant BF.7 in Shenzhen]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:379-385. [PMID: 36942331 DOI: 10.3760/cma.j.cn112338-20221031-00926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Objective: To explore the epidemiological characteristic of a COVID-19 outbreak caused by 2019-nCoV Omicron variant BF.7 and other provinces imported in Shenzhen and analyze transmission chains and characteristics. Methods: Field epidemiological survey was conducted to identify the transmission chain, analyze the generation relationship among the cases. The 2019-nCoV nucleic acid positive samples were used for gene sequencing. Results: From 8 to 23 October, 2022, a total of 196 cases of COVID-19 were reported in Shenzhen, all the cases had epidemiological links. In the cases, 100 were men and 96 were women, with a median of age, M (Q1, Q3) was 33(25, 46) years. The outbreak was caused by traverlers initial cases infected with 2019-nCoV who returned to Shenzhen after traveling outside of Guangdong Province.There were four transmission chains, including the transmission in place of residence and neighbourhood, affecting 8 persons, transmission in social activity in the evening on 7 October, affecting 65 persons, transmission in work place on 8 October, affecting 48 persons, and transmission in a building near the work place, affecting 74 persons. The median of the incubation period of the infection, M (Q1, Q3) was 1.44 (1.11, 2.17) days. The incubation period of indoor exposure less than that of the outdoor exposure, M (Q1, Q3) was 1.38 (1.06, 1.84) and 1.95 (1.22, 2.99) days, respcetively (Wald χ2=10.27, P=0.001). With the increase of case generation, the number and probability of gene mutation increased. In the same transmission chain, the proportion of having 1-3 mutation sites was high in the cases in the first generation. Conclusions: The transmission chains were clear in this epidemic. The incubation period of Omicron variant BF.7 infection was shorter, the transmission speed was faster, and the gene mutation rate was higher. It is necessary to conduct prompt response and strict disease control when epidemic occurs.
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Affiliation(s)
- Y P Cheng
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - D F Kong
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - J Zhang
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Z Q Lyu
- Central Laboratory,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Z G Chen
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - H W Xiong
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y Lu
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Q S Luo
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Q Y Lyu
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - J Zhao
- Institute for AIDS Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y Wen
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - J Wan
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - F F Lu
- Fuyong Branch Center of Shenzhen Bao'an District Public Health Center, Shenzhen 518103, China
| | - J H Lu
- Central Office,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - X Zou
- Central Office,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Z Zhang
- Institute for Infectious Disease Prevention and Control, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
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Zhang HW, Hu JJ, Fu RQ, Liu X, Zhang YH, Li J, Liu L, Li YN, Deng Q, Luo QS, Ouyang Q, Gao N. Flavonoids inhibit cell proliferation and induce apoptosis and autophagy through downregulation of PI3Kγ mediated PI3K/AKT/mTOR/p70S6K/ULK signaling pathway in human breast cancer cells. Sci Rep 2018; 8:11255. [PMID: 30050147 PMCID: PMC6062549 DOI: 10.1038/s41598-018-29308-7] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [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: 02/16/2018] [Accepted: 07/09/2018] [Indexed: 12/11/2022] Open
Abstract
Anticancer activities of flavonoids derived from Tephroseris kirilowii (Turcz.) Holub. were evaluated in human cancer cells. We isolated and identified, for the first time, eight flavonoids from T. kirilowii and found that three of them (IH: isorhamnetin, GN: genkwanin, and Aca: acacetin) inhibited cell proliferation in a variety of human cancer cell lines. These active flavonoids caused cell cycle arrest at G2/M phase and induced apoptosis and autophagy in human breast cancer cells. Molecular docking revealed that these flavonoids dock in the ATP binding pocket of PI3Kγ. Importantly, treatment with these flavonoids decreased the levels of PI3Kγ-p110, phospho-PI3K, phospho-AKT, phospho-mTOR, phospho-p70S6K, and phospho-ULK. Pretreatment with PI3Kγ specific inhibitor AS605240 potentiated flavonoids-mediated inactivation of AKT, mTOR, p70S6K, ULK, and apoptosis. Taken together, these findings represent a novel mechanism by which downregulation of PI3Kγ-p110 and consequent interruption of PI3K/AKT/mTOR/p70S6K/ULK signaling pathway might play a critical functional role in these flavonoids-induced cell cycle arrest at G2/M phase, apoptosis, and autophagy. Our studies provide novel insights into the anticancer activities of selected flavonoids and their potential uses in anticancer therapy.
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Affiliation(s)
- Hong-Wei Zhang
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Jin-Jiao Hu
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Ruo-Qiu Fu
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Xin Liu
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Yan-Hao Zhang
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Jing Li
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Lei Liu
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Yu-Nong Li
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Qin Deng
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Qing-Song Luo
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Qin Ouyang
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China
| | - Ning Gao
- College of Pharmacy, 3rd Military Medical University, Chongqing, 400038, China.
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Zhou L, Huang YY, Chen DY, Zhang D, Luo QS, Wang Y, Wu Y. [Correlation between both neck/shoulder and low back pain and daily behavioral habits among middle school students in Shenzhen]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:469-473. [PMID: 29699039 DOI: 10.3760/cma.j.issn.0254-6450.2018.04.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the relations between neck/shoulder or low back pain and their daily behavioral habits among middle school students in Shenzhen. Methods: We randomly chose 3 952 students from 10 high schools in Shenzhen to complete the questionnaires. Data was gathered and analyzed, using the IBM SPSS 23.0. Results: Of the 3 952 participants, 20.3% had neck/shoulder pain and 15.2% had low back pain. Among students experienced neck/shoulder pain, female (25.3%), high school (24.5%) and boarding students (24.4%) experienced higher rates of neck/shoulder pain (P<0.05). Female students (17.9%) also had higher rate of low back pain (P<0.05). Results from logistic regression analysis showed that factors as: gender, type of school, taking naps on the desk, staying up late, self-perceived stress from learning, overloading homework, time spent on mobile phone and TV, spending long time on computer etc. were related to the neck/shoulder pain (P<0.05). Factors as: gender, naps on the desk, stay up late, self-perceived stress, overloading homework, time spent on mobile phone and TV etc., were related to low back pain (P<0.05). Conclusion: Neck/shoulder pain and low back pain were both commonly seen while high self-perceived stress, sedentary behaviors and poor sleeping habits were associated with both neck/shoulder and low back pain in high school students in Shenzhen.
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Affiliation(s)
- L Zhou
- Shenzhen Municipal Center for Diseases Control and Prevention, Shenzhen 518020, China
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Gan CZ, Li G, Luo QS, Li HM. miR-339-5p downregulation contributes to Taxol resistance in small-cell lung cancer by targeting α1,2-fucosyltransferase 1. IUBMB Life 2017; 69:841-849. [PMID: 28940895 DOI: 10.1002/iub.1679] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 09/01/2016] [Accepted: 07/06/2017] [Indexed: 12/23/2022]
Abstract
Lung cancer is a leading cause of cancer-related mortality, and non-small-cell lung carcinoma is responsible for almost 80% of lung cancer-related deaths. In recent years, lung cancer has shown increasing incidence but poor prognosis, and many studies have demonstrated that microRNAs play crucial roles in the development of lung carcinoma and chemoresistance. This study investigated the role of miR-339-5p involvement in lung carcinoma cell lines and chemoresistance to Taxol. We observed that miR-339-5p was significantly downregulated in Taxol-A549 cells compared with A549 cells. In vitro studies further indicated that miR-339-5p could promote colony formation and attenuate apoptosis of lung carcinoma cell lines through targeting α1,2-fucosyltransferase 1 and regulation of the downstream protein Lewis y. Furthermore, miR-339-5p was found to enhance the proliferation inhibition ability of Taxol in lung carcinoma cell lines as well as in the Taxol-A549 subclone. An in vivo study indicated that both miR-339-5p and Taxol could attenuate the growth of lung carcinoma; moreover, miR-339-5p could synergistically promote this inhibitory function of Taxol. In summary, our results suggest a miR-339-5p molecular network that is involved in controlling lung carcinoma progression. © 2017 The Authors IUBMB Life published by Wiley Periodicals, Inc. on behalf of International Union of Biochemistry and Molecular Biology, 69(11):841-849, 2017.
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MESH Headings
- A549 Cells
- Animals
- Antineoplastic Agents, Phytogenic/pharmacology
- Apoptosis/drug effects
- Base Sequence
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/pathology
- Carcinoma, Non-Small-Cell Lung/therapy
- Cell Line, Tumor
- Cell Survival/drug effects
- Drug Resistance, Neoplasm/genetics
- Female
- Fucosyltransferases/genetics
- Fucosyltransferases/metabolism
- Gene Expression Regulation, Neoplastic
- Humans
- Lung Neoplasms/genetics
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Lung Neoplasms/therapy
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Molecular Mimicry
- Oligodeoxyribonucleotides/genetics
- Oligodeoxyribonucleotides/metabolism
- Paclitaxel/pharmacology
- Signal Transduction
- Tumor Burden/drug effects
- Xenograft Model Antitumor Assays
- Galactoside 2-alpha-L-fucosyltransferase
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Affiliation(s)
- Chong-Zhi Gan
- Department of Thoracic Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, People's Republic of China
| | - Gang Li
- Department of Thoracic Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, People's Republic of China
| | - Qing-Song Luo
- Department of Thoracic Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, People's Republic of China
| | - Hong-Min Li
- Cancer Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, People's Republic of China
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Wang ZF, Xue CS, Zhou QX, Wan ZB, Luo QS. Effects of tetrandrine on changes of NMDA receptor channel in cortical neurons of rat induced by anoxia. Zhongguo Yao Li Xue Bao 1999; 20:729-32. [PMID: 10678107] [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: 02/15/2023]
Abstract
AIM To study the effects of tetrandrine (Tet) on the changes of NMDA receptor channels in cortical neurons induced by anoxia. METHODS Cell-attached configuration of patch-clamp techniques. Anoxia was produced by perfused cells with 95% N2 + 5% CO2 gassed bath solution. RESULTS During anoxia, the open time constant (tau 2), open probability (Po) of 35-pS and 100-pS channels increased. Tet 7.5 mumol.L-1 reduced the Po of 35-pS and 100-pS channels, 15 and 30 mumol.L-1 inhibited open of 100-pS channel fully, and changed the open time constant of 35-pS from two to single exponential distribution. CONCLUSION Tet inhibition of the open of NMDA receptor channels induced by anoxia was one of its protective mechanisms.
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Affiliation(s)
- Z F Wang
- Department of Pharmacology, Chongqing University of Medical Sciences, China.
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Lubin JH, Li JY, Xuan XZ, Cai SK, Luo QS, Yang LF, Wang JZ, Yang L, Blot WJ. Risk of lung cancer among cigarette and pipe smokers in southern China. Int J Cancer 1992; 51:390-5. [PMID: 1592530 DOI: 10.1002/ijc.2910510310] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [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: 01/09/2023]
Abstract
Studies in Shanghai and in north-east China indicate that cigarette smoking is a major contributor to the high rates of lung cancer in those areas, but doubts persist regarding the influence of cigarette use on lung cancer rates in other areas of China. In addition, the risk of lung cancer associated with other methods of tobacco consumption--in particular, the use of bamboo water-pipes and long-stem pipes--is uncertain. A population-based case-control study of 427 male lung cancer patients residing in a mining area of Southern China and 1,011 controls was carried out to address this and other issues. Of these patients, 63% smoked cigarettes and (water and long-stem) pipes; 17% and 14% smoked only cigarettes or pipes, respectively; and 6% did not smoke. Compared to non-smokers, smokers of cigarettes only, smokers of pipes only and mixed smokers were at increased risk; OR = 2.6 (95% CI 1.1-6.2), 1.8 (95% CI 0.8-4.2) and 4.1 (95% CI 2.3-9.2), respectively. Risk increased with duration of tobacco use; however, the rate of increase with years of cigarette use was significantly greater than for years of pipe use (p = 0.03). In addition, risks increased 8-fold in the highest quartile of number of cigarettes per day compared to non-cigarette smokers vs. 2.3-fold for the highest quartile of number of liang (50 g) smoked per month compared to non-pipe-smokers; the trends in the ORs differed significantly (p less than 0.001). Results suggest that, in this area of China, tobacco use is an important cause of lung cancer, and that smoking cigarettes may be more deleterious than smoking pipes (primarily water pipes).
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Affiliation(s)
- J H Lubin
- Biostatistics Branch, US National Cancer Institute, Rockville, MD 20892
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Swanson CA, Mao BL, Li JY, Lubin JH, Yao SX, Wang JZ, Cai SK, Hou Y, Luo QS, Blot WJ. Dietary determinants of lung-cancer risk: results from a case-control study in Yunnan Province, China. Int J Cancer 1992; 50:876-80. [PMID: 1555887 DOI: 10.1002/ijc.2910500609] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.8] [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: 12/27/2022]
Abstract
The relation between diet and lung cancer was studied among male residents of a mining community in Yunnan Province. After obtaining food frequency data from subjects or proxies, we compared diets of 428 cases, aged 35-74 years, and 1,011 age-matched controls. Cases tended to consume slightly more rice, but less protein-rich foods (i.e., bean curd, meat, eggs) and vegetables than did controls. The relative risks of lung cancer across increasing quartiles of meat (i.e., pork) consumption, for example, were 1.00, 0.67, 0.72 and 0.46 (p for trend less than 0.01). The relative risks of lung cancer across increasing quartiles of consumption of dark-green, leafy vegetables were 1.00, 0.62, 0.52 and 0.41 (p for trend less than 0.01). Although specific dietary constituent(s) responsible for the protective effect of vegetable consumption could not be identified, carotenoids other than beta-carotene, or compounds in cruciferous or Allium vegetables, are possibilities.
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Affiliation(s)
- C A Swanson
- Epidemiology and Biostatistics Program, DCE, NCI, NIH, Rockville, MD 20852
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Zhang CC, Luo DM, Zhang WD, Zhang GH, Luo QS, Liu ZZ. [Effects of electric stimulation of central end of vagus on unit discharges of hippocampus in rhesus monkeys]. Sheng Li Xue Bao 1986; 38:445-9. [PMID: 3798136] [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: 01/07/2023]
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