Spatiotemporal analysis of pertussis in Hunan Province, China, 2009-2019
作者:
Tan, Huiyi;Liang, Linlong;Yin, Xiaocheng;Li, ChunYing;Liu, Fuqiang;...
期刊:
BMJ OPEN ,2022年12(9):e055581 ISSN:2044-6055
通讯作者:
Wu, C.;Liu, F.
作者机构:
[Tan, Huiyi] Changsha Ctr Dis Control & Prevent, Changsha, Hunan, Peoples R China.;[Tan, Huiyi; Li, ChunYing; Wu, Chengqiu] Univ South China, Hengyang Med Sch, Sch Publ Hlth, Hengyang, Hunan, Peoples R China.;[Liang, Linlong] Changsha Cent Hosp, Changsha, Hunan, Peoples R China.;[Yin, Xiaocheng] Univ South China, Hengyang Med Sch, Affiliated Hosp 1, Hengyang, Hunan, Peoples R China.;[Liu, Fuqiang] Hunan Prov Ctr Dis Control & Prevent, Publ Hlth Emergency Response Off, Changsha, Hunan, Peoples R China.
通讯机构:
[Wu, C.] S;[Liu, F.] P;Public Health Emergency Response Office, Changsha, China;School of Public Health, Hengyang, China
关键词:
epidemiology;public health;public health
摘要:
<jats:sec><jats:title>Objectives</jats:title><jats:p>This study aims to explore the spatial and spatiotemporal distribution of pertussis in Hunan Province, and provide a scientific basis for targeting preventive measures in areas with a high incidence of pertussis.</jats:p></jats:sec><jats:sec><jats:title>Design</jats:title><jats:p>In this retrospective spatial and spatiotemporal (ecological) study, the surveillance and population data of Hunan Province from 2009 to 2019 were analysed. The ArcGIS V.10.3 software was used for spatial autocorrelation analysis and visual display, and SaTScan V.9.6 software was used for statistical analysis of spatiotemporal scan data.</jats:p></jats:sec><jats:sec><jats:title>Settings</jats:title><jats:p>Confirmed and suspected pertussis cases with current addresses in Hunan Province and onset dates between 1 January 2009 and 31 December 2019 were included in the study.</jats:p></jats:sec><jats:sec><jats:title>Participants</jats:title><jats:p>The study used aggregated data, including 6796 confirmed and suspected pertussis cases.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>The seasonal peak occurred between March and September, and scattered children were at high risk. The global Moran’s I was between 0.107 and 0.341 (p<0.05), which indicated that the incidence of pertussis in Hunan had a positive spatial autocorrelation. The results of local indicators of spatial autocorrelation analysis showed that the hot spots were mainly distributed in the northeast region of Hunan Province. Moreover, both purely space and spatiotemporal scans showed that the central and northeastern parts were the most likely cluster areas with an epidemic period between March and October in 2018 and 2019.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>The distribution of the pertussis epidemic in Hunan Province from 2009 to 2019 shows spatiotemporal clustering. The clustering areas of the pertussis epidemic were concentrated in the central and northeastern parts of Hunan Province between March and October 2018 and 2019. In areas with low pertussis incidence, the strengthening of the monitoring system may reduce under-reporting. In areas with high pertussis incidence where we could study whether the genes of endemic pertussis strains are mutated and differ from vaccine strains.</jats:p></jats:sec>
语种:
英文
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Exposure of Chinese adult females to parabens from personal care products: Estimation of intake via dermal contact and health risks
作者:
Li, Chun;Zhao, Yang;Liu, Shan;Yang, Dongfeng;Ma, Huimin;...
期刊:
Environmental Pollution ,2021年272:116043 ISSN:0269-7491
通讯作者:
Lu, Shaoyou
作者机构:
[Li, Chun; Zhao, Yang; Lu, Shaoyou; Liu, Shan] Sun Yat Sen Univ, Sch Publ Hlth Shenzhen, Guangzhou 510275, Peoples R China.;[Kang, Li; Yang, Dongfeng; Zhu, Zhou] Shenzhen Ctr Dis Control & Prevent, Shenzhen 518055, Peoples R China.;[Yang, Dongfeng] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.;[Ma, Huimin] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China.;[Ma, Huimin] Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou 510640, Peoples R China.
通讯机构:
[Lu, Shaoyou] S;Sun Yat Sen Univ, Sch Publ Hlth Shenzhen, Guangzhou 510275, Peoples R China.
关键词:
Adult females;Health risk;Intake;Parabens;Personal care products
摘要:
Capsule: Leave-on PCPs, especially sunscreen, body lotion, and mask, constituted the main sources of paraben exposure via dermal contact for Chinese adult females. © 2020 Elsevier LtdParabens are added into foodstuffs, pharmaceuticals and personal care products (PCPs) as additives extensively due to their excellent antiseptic and antibacterial effects. In the past decade, parabens have raised great concerns on their potential harm to humans. Existing studies have suggested positive correlations between PCP application and urinary paraben concentrations in females, but little is known about paraben exposure levels and health risks arising from PCP use. In this study, 150 PCP samples covering eleven categories were collected from South China and measured for the concentrations of five parabens, including methyl paraben (MeP), ethyl paraben (EtP), propyl paraben (PrP), butyl paraben (BuP) and benzyl paraben (BeP). Parabens were widely detected in PCPs, with a detection frequency of 100%, 99.3%, 80.0%, 74.0% and 13.3%, for MeP, EtP, PrP, BuP and BeP, respectively. The median concentration of Σ5parabens was 126 μg/g with a range of 6.38–424 μg/g across all PCP samples. The contents of MeP, EtP and PrP measured in leave-on PCPs were obviously higher than those in the rinse-off ones (p < 0.05). MeP and PrP were the main paraben analogues, together accounting for 93.6% of Σ5parabens in all PCPs. The daily intakes of parabens through dermal absorption by Chinese adult females estimated by measurements obtained in the present study were 0.15 and 83.2 μg/kg-bw/day on basis of the application of rinse-off and leave-on PCPs, respectively. Among the eleven categories, sunscreen, body lotion and mask constituted the main exposure sources of parabens to females. The hazard quotients of parabens were far less than 1, indicating no considerable health risk for Chinese adult females. © 2020 Elsevier Ltd
语种:
英文
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Trace elements in shellfish from Shenzhen, China: Implication of coastal water pollution and human exposure
作者:
Liu, Shan;Liu, Yanling;Yang, Dongfeng;Li, Chun;Zhao, Yang;...
期刊:
Environmental Pollution ,2020年263(Aug. Pt.B):114582.1-114582.8 ISSN:0269-7491
通讯作者:
Lu, Shaoyou
作者机构:
[Li, Chun; Zhao, Yang; Lu, Shaoyou; Liu, Shan] Sun Yat Sen Univ, Sch Publ Hlth Shenzhen, Guangzhou 510275, Peoples R China.;[Liu, Yanling] Nanshan Dist Ctr Dis Control & Prevent, Shenzhen 518054, Peoples R China.;[Yang, Dongfeng] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.;[Ma, Huimin] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China.;[Ma, Huimin] Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou 510640, Peoples R China.
通讯机构:
[Lu, Shaoyou] S;Sun Yat Sen Univ, Sch Publ Hlth Shenzhen, Guangzhou 510275, Peoples R China.
关键词:
Trace elements;Shellfish;Estimated daily intake;Health risk
摘要:
Shellfish constitute an important component of human diet, especially for those living in coastal regions. Shellfish have attracted extensive attention due to high enrichment of heavy metals. The aims of this study were to investigate the levels of trace elements in shellfish from coastal waters of Shenzhen, China and to assess human intake risks. Nine elements, including chromium (Cr), copper (Cu), iron (Fe), zinc (Zn), manganese (Mn), selenium (Se), cadmium (Cd), arsenic (As) and lead (Pb) were measured in 216 shellfish samples from eight species. Their concentrations (based on wet weight) were: Cr (0.28–21.4 mg kg−1), Cu (1.40–158 mg kg−1), Fe (16.5–5387 mg kg−1), Zn (11.1–847 mg kg−1), Mn (1.33–422 mg kg−1), Se (0.15–11.8 mg kg−1), Cd (0.02–18.4 mg kg−1), Pb (<LOQ-10.9 mg kg−1) and As (2.24–95.5 mg kg−1), relatively greater than those reported in shellfish from other locations of China. Crassostrea ariakensis and Babylonia areolata were found to enrich As and Cd, respectively. The target hazard quotient (THQ) values of Cd and As were more than 1, suggesting considerable health risks from the consumption of shellfish of this zone. To our knowledge, this is the first study to assess the human risk exposure to trace elements via shellfish consumption in South China. © 2020 Elsevier LtdResidents in Shenzhen, China have been subjected to considerable health risks of As and Cd via shellfish consumption. © 2020 Elsevier Ltd
语种:
英文
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The internal exposure of phthalate metabolites and bisphenols in waste incineration plant workers and the associated health risks
作者:
Lu, Shaoyou;Yang, Dongfeng;Ge, Xiang;Li, Le;Zhao, Yang;...
期刊:
Environment International ,2020年145:106101 ISSN:0160-4120
通讯作者:
Yu, Yingxin
作者机构:
[Li, Chun; Zhao, Yang; Lu, Shaoyou; Yang, Dongfeng] Sun Yat Sen Univ, Sch Publ Hlth Shenzhen, Guangzhou 510275, Peoples R China.;[Ma, Shengtao; Yu, Yingxin; Ge, Xiang] Guangdong Univ Technol, Guangzhou Key Lab Environm Catalysis & Pollut Con, Inst Environm Hlth & Pollut Control, Sch Environm Sci & Engn,Guangdong Key Lab Environ, Guangzhou 510006, Peoples R China.;[Li, Le; Yang, Dongfeng] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.;[Yang, Dongfeng] Shenzhen Ctr Dis Control & Prevent, Shenzhen 518055, Peoples R China.
通讯机构:
[Yu, Yingxin] G;Guangdong Univ Technol, Guangzhou Key Lab Environm Catalysis & Pollut Con, Inst Environm Hlth & Pollut Control, Sch Environm Sci & Engn,Guangdong Key Lab Environ, Guangzhou 510006, Peoples R China.
关键词:
Bisphenols;Health risk assessment;Municipal solid waste incineration;Phthalate metabolites;Urine
摘要:
Many hazardous substances can be released during incineration of municipal solid waste (MSW), which pose a potential threat to human health. As additives, phthalates (PAEs) and bisphenols (BPs), which are widely used in daily goods, are likely to be present in the released hazardous substances. In the present study, we investigated the urinary levels of phthalate metabolites (mPAEs) and BPs in workers in an MSW incineration plant (the exposed group) and in residents 8 km away (the control group) in Shenzhen, China. The results showed that the median total urinary concentration of mPAEs in workers was significantly higher than that in residents (1.02 × 103 vs. 375 ng/mL). However, there was no significant difference between workers and residents for BPs. Among the mPAEs measured, the most abundant compound was mono-n-butyl phthalate in both exposed and control groups. Monoethyl phthalate and monomethyl phthalate might be potential markers for MSW incineration because of significantly high levels in the exposed group. The workers engaged in different types of workshops showed no significant differences in the urinary levels of mPAEs, also for BPs. It was worth noting that 70.8% of workers were at risk of the non-carcinogenic effects caused by PAEs with diethylhexyl phthalate having the highest risk. Actions should be taken to reduce the risks caused by these hazardous chemicals. © 2020 The Author(s)
语种:
英文
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预防医学实验教学体系与实践的改革探索
作者:
黄炼;张朝晖;曾怀才;郝玉娥;李程;...
期刊:
山西医科大学学报 ,2018年20(9):765-767 ISSN:1007-6611
作者机构:
南华大学公共卫生学院预防医学与放射卫生实验中心,衡阳,421001;[曾怀才; 单晓云; 黄炼; 张朝晖; 李程; 郝玉娥] 南华大学
关键词:
预防医学;实验教学;教学改革
摘要:
预防医学实验是预防医学的重要组成部分,是增强学生实践动手能力、培养科学精神和创新能力的关键环节。南华大学公共卫生学院通过改革实验教学管理体制和实验教学内容,自主编写实验教材,组织学生参与实验准备,多种考核方式综合评价等措施,充分调动学生学习的自主性,有效培养和提高预防医学专业学生的实践能力和综合素质。
语种:
中文
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依托省级实验教学示范中心平台提升预防医学生的公共卫生核心能力
作者:
王婧;张朝晖;谭琰;何爱桃;李程;...
期刊:
教育教学论坛 ,2016年(20):191-192 ISSN:1674-9324
作者机构:
南华大学公共卫生学院,湖南衡阳,421001;[曾怀才; 王婧; 张朝晖; 何爱桃; 谭琰; 李程] 南华大学
关键词:
预防医学;公共卫生核心能力;实验教学
摘要:
本文以提升预防医学生的公共卫生核心能力为导向,充分发挥“湖南省实验教学示范中心”的实验教学资源优势,改进实验教学方法,激发学生的潜能,探索如何提高公共卫生应急能力、应答能力和解决问题的能力,培养具有良好素质和竞争能力的公共卫生工作者.
语种:
中文
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内科临床实习带教的问题与对策
作者:
程健琳;何芳丽;谢娟;李程
期刊:
基础医学与临床 ,2015年35(11):1583-1585 ISSN:1001-6325
作者机构:
[程健琳; 李程] 南华大学公共卫生学院;[何芳丽] 南华大学药学与生物科学学院;[谢娟] 南华大学医学院
关键词:
内科;实习带教;问题;对策
摘要:
临床实习是培养医学生成为临床医生最重要的环节之一。近年来内科临床实习带教中出现的主要问题表现为老师带教积极性不高,学生实习意识不强,新型医患关系的出现以及出科考核制度不完善等。本文探讨了上述问题产生的原因,提出了相应的解决对策,以期进一步提高内科临床实习水平。
语种:
中文
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铀矿尘致大鼠肺纤维化中转化生长因子β1的表达
作者:
罗振华;胡迎春;王守凤;袁新健;杨丽萍;...
作者机构:
南华大学公共卫生学院劳动卫生与环境卫生学教研室,衡阳421001
会议名称:
第七届中国核学会“三核”论坛暨中国毒理学会放射毒理委员会第八次全国会议
会议时间:
201007
会议地点:
长春
会议论文集名称:
第七届中国核学会“三核”论坛暨中国毒理学会放射毒理委员会第八次全国会议论文集
关键词:
肺纤维化;转化生长因子-β1;血浆;肺匀浆
摘要:
目的:探讨铀矿尘诱导肺组织纤维化过程转化生长因子-β1(TGF-β1)在肺组织中的表达以及TGF-β1含量的变化.方法:36只大鼠随机等分为铀矿尘组和对照组.采用一次性非暴露式气管内滴注染尘方法,铀矿尘组每只大鼠气管内滴注20mg/ml的粉尘悬液1ml,对照组气管内滴注生理盐水1ml,分别于处理后第14 d,30 d及60 d每组随机处死6只取样,观察肺组织病理形态改变以及肺组织中TGF-β1的表达,测定肺匀浆和血浆中TGF-β1含量的改变.结果:铀矿尘组在染尘后第14 d时肺组织主要表现为炎症改变,第30 d时出现纤维增生同时TGF-β1表达增强,第60 d时表现为大量的纤维增生并伴有TGF-β1强表达.肺匀浆和血浆中TGF-β1含量在第14 d时高于对照组,第30 d及60 d时肺匀浆和血浆中TGF-β1含量显著高于对照组(P<0.01).结论:铀矿尘诱导肺组织纤维化过程中存在TGF-β1高表达,肺匀浆和血浆中TGF-β1含量明显增加.
语种:
中文
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内源性硫化氢对硫酸铍致大鼠肺损伤的保护及其PI3K/Akt依赖机制
作者:
廖永红;黄炼;李程;张朝晖
作者机构:
南华大学公共卫生学院预防医学系,湖南衡阳,421001;水口山有色金属有限责任公司职工医院,湖南衡阳,421513
会议名称:
全国卫生毒理学术研讨会
会议时间:
2014-12-01
会议地点:
北京
会议论文集名称:
全国卫生毒理学术研讨会论文集
关键词:
硫酸铍;内源性硫化氢;活性氧
摘要:
目的 采用非暴露式气管内滴注硫酸铍(BeSO4)染毒SD大鼠,并用内源性硫化氢(H2S)供体硫氢化钠(NaHS)和肺组织中内源性H2S合成酶胱硫醚-γ-裂解酶(CSE)抑制剂DL-炔丙基甘氨酸(PPG)干预,探讨内源性H2S对BeSO4致大鼠肺组织损伤的作用及其机制。方法 将健康、无特定病原体(SPF级)、体重180±20g、雄性SD大鼠48只,随机分为对照组、BeSO4组、BeSO4+NaHS组和BeSO4+PPG组,每组12只。
语种:
中文
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改革《毒理学基础》实验教学模式,培养创新性预防医学人才
作者:
张朝晖;黄炼;李程
期刊:
中国校外教育 ,2014年(S3):435-435 ISSN:1004-8502
作者机构:
南华大学公共卫生学院
关键词:
实验教学;预防医学;毒理学基础
摘要:
通过整合《毒理学基础》实验教学内容,改革预防医学专业《毒理学基础》实验教学方式,充分调动学生自主学习积极性,从而达到培养预防医学专业学生的综合素质和创新能力的目的。
语种:
中文
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四碘荧光素钠-邻啡啰啉荧光光谱法测定水中镉
作者:
陈春芳;程健琳;李程;张涛;何爱桃
期刊:
中南医学科学杂志 ,2014年42(6):579-581+629 ISSN:2095-1116
作者机构:
南华大学教务处,湖南衡阳,421001;南华大学公共卫生学院,湖南衡阳,421001;[张涛; 程健琳; 何爱桃; 李程; 陈春芳] 南华大学
关键词:
镉;荧光光谱法;四碘荧光素钠;邻啡啰啉
摘要:
目的 建立一种荧光光谱测定水中镉的新方法. 方法 在pH =6.0的乙酸-乙酸钠(HAe-NaAc)缓冲介质中,镉(Cd2+)与四碘荧光素钠、邻啡哆啉反应形成络合物,体系的最大激发波长为525 nm,发射波长为531 nm,在一定范围内,其荧光强度与Cd2+的浓度成线性关系. 结果 Cd2+浓度在3.92×10 6mol/L ~2.00 ×10-5 mol/L范围内,荧光强度变化值(△F)与镉离子浓度(cCd2+)有良好的线性关系,线性方程为△F=58.9c(×10-5 mol/L) +4.8,相关系数r=0.999 2,检出限为1.91×10-6 mol/L,样品加标回收率为86.6%~101.5%.结论 本方法可直接用于水中镉的测定,选择性好,准确可靠,结果满意.
语种:
中文
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当归多糖对幼年大鼠染铅所致贫血的治疗作用
作者:
田丹;王敏;李程;王穆;谭伟;...
期刊:
中国药理学与毒理学杂志 ,2012年26(2):200-204 ISSN:1000-3002
通讯作者:
Rang, W.-Q.
作者机构:
[王穆; 田丹; 谭伟; 刘佩意; 让蔚清; 李程] Department of Hygienic Toxicology, Institute of Environmental Medicine and Radiation Health, University of South China, Hengyang 421001, China
通讯机构:
[Rang, W.-Q.] D;Department of Hygienic Toxicology, , Hengyang 421001, China
关键词:
当归多糖;血铅;贫血
摘要:
目的探讨当归多糖(APS)对染铅大鼠的驱铅作用和对染铅所致贫血的治疗作用。方法4周龄SD幼鼠ip给予醋酸铅30 mg.kg~(-1),隔天1次,连续7次,建立铅性贫血模型。建模第2天,ip给予APS15,30,60和120 mg.kg~(-1),每天1次,共14 d。以给药当天为第1天,分别于给药前第7和14天剪尾取血,检测血铅(BPb)、血红蛋白(Hb)和红细胞(RBC)。第14天处死大鼠,股动脉取血,测定BPb、Hb、RBC、血细胞比容(Hct)、δ-氨基乙酰丙酸脱水酶(ALAD)活性和锌原卟啉(ZPP)浓度。采用石墨炉原子吸收光谱法测定全血血铅含量;采用氰化高铁法测定Hb含量;采用显微镜计数法计数RBC;采用血球分析仪测定Hct;采用二甲氨基苯甲醛法比色法测定全血ALAD活性;采用锌原卟啉血液荧光测定仪测定ZPP。结果与正常对照组比较,给药前第7天和第14天模型组BPb含量显著升高,Hb和RBC明显降低(P<0.01);与给药前相比模型组第7和14天BPb含量均明显降低(P<0.01)。与模型组相比,给APS 15~120 mg.kg~(-1)第7天和第14天,BPb明显降低,并且第14天明显低于第7天,但均显著高于对应的正常对照组(P<0.01);Hb和RBC明显升高,并且第14天明显高于第7天,Hb分别增加了33.4%,34.1%,21.0%和34.6%,RBC分别增加了28.5%,17.9%,18.3%和19.2%(P<0.01),基本恢复至正常对照组水平。与模型组相比,给予APS 15~120 mg.kg~(-1)第14天,Hct明显升高,并且恢复至正常对照组水平;ALAD明显升高(P<0.01),但仍显著低于正常对照组水平(P<0.01);ZPP明显降低,但仍显著高于正常对照组水平(P<0.01)。二巯基丁二酸120 mg.kg~(-1)作用与APS一致、效果相当。结论APS具有明显的驱铅作用,对染铅所致贫血具有治疗作用。
语种:
中文
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硫酸铍致小鼠肝线粒体功能障碍研究
作者:
张朝晖;王淑娟;骆金俊;黄炼;李程;...
期刊:
中国职业医学 ,2012年39(5):376-379 ISSN:2095-2619
作者机构:
南华大学公共卫生学院环境医学与放射卫生研究所,湖南衡阳,421001
关键词:
硫酸铍;线粒体功能障碍;活性氧;细胞色素C;跨膜电位
摘要:
目的 探讨硫酸铍(BeSO4·4H2O)对小鼠肝线粒体功能的影响.方法 将36只6周龄昆明(KM)小鼠随机分为对照组、低剂量组及高剂量组3组,每组12只,雌雄各半.对照组采用灭菌生理氯化钠溶液按0.01 ml/g(体质量)隔天腹腔注射,低、高剂量组分别以1、2 mg/kg BeSO4·4H2O生理氯化钠溶液隔天腹腔注射染毒,连续染毒3周.取肝脏采用差速离心法制备线粒体,采用荧光分光光度法测定其活性氧(ROS)水平及线粒体膜电位(△Ψm),采用分光光度法测定细胞色素C (Cytc)水平及线粒体肿胀程度.结果 与对照组比较,低、高剂量组肝脏系数增高,肝脏线粒体ROS及Cytc水平随染毒剂量的增加而升高,差异均有统计学意义(P<0.05);随染毒剂量的增加△Ψm下降、线粒体肿胀明显.结论 BeSO4·4H2O可致小鼠肝线粒体功能障碍.
语种:
中文
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云南滇池富磷区趋化性细菌的系统多样性
作者:
郝玉娥;杨培香;陈明会;舒雪萍;陈强;...
期刊:
应用生态学报 ,2012年23(7):1985-1991 ISSN:1001-9332
通讯作者:
Mo, M.-H.
作者机构:
[郝玉娥; 李程] College of Public Health, University of South China, Hengyang 421001, Hunan, China;[莫明和; 杨培香; 陈强; 舒雪萍; 陈明会] Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming 650091, China;[杨发祥] Yunnan Microbial Fermentation Engineering Research Center Co. Ltd., Kunming 650217, China
通讯机构:
[Mo, M.-H.] K;Key Laboratory for Conservation and Utilization of Bio-Resources, , Kunming 650091, China
关键词:
滇池富磷区;解磷细菌;趋化性;系统多样性
摘要:
从云南滇池富磷区100份土样中筛选解磷细菌(PSB),通过组氨酸激酶编码基因(cheA)筛选趋化性PSB,并通过软琼脂平板法验证其趋化性;利用钼蓝比色法测定PSB对磷酸三钙的溶解能力;基于16S rRNA基因序列分析趋化性PSB的系统亲缘关系.结果表明:分离到的145株PSB的溶磷圈直径在0.5 ~2 cm,其中37株为趋化性PSB.该37株PSB对供试的4种趋化底物均具有趋化性,而且对磷酸三钙均具有解磷活性.基于16S rRNA基因序列的系统发育分析显示,这37株趋化性PSB分属于10属,共17种细菌,其中假单胞菌属种类最多(5种9株),肠杆菌属次之(3种8株),芽孢杆菌属尽管只分离到1个种(Bacillus aryabhattai),但共分离到9个菌株.
语种:
中文
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小鼠腹腔注射硫酸铍的病理形态学观察
作者:
张朝晖;黄炼;谭滇湘;骆金俊;李程;...
期刊:
中国实验动物学报 ,2012年20(5):58-61,后插8 ISSN:1005-4847
作者机构:
南华大学公共卫生学院,湖南衡阳,421001;衡阳市中心医院麻醉科,湖南衡阳,421001;[黄炼; 廖永红; 张朝晖; 王淑娟; 骆金俊; 李程] 南华大学;[谭滇湘] 衡阳市中心医院
关键词:
硫酸铍;小鼠;脏器系数;病理学;肺;肝
摘要:
目的 研究腹腔注射硫酸铍( BeSO4·4H2O)对小鼠主要脏器的损害作用.方法 将30只6周龄昆明(KM)雄性小鼠随机分为三组,分别予以不同剂量硫酸铍生理盐水溶液腹腔注射染毒,隔日一次,染毒两周.观察主要脏器的病理组织学变化并测定脏器系数.结果 与对照组比较,染毒组心、脾、肾、睾丸脏器系数无显著差异,肝、肺脏器系数差异有统计学意义(P<0.05);对照组肺、肝病理学组织检查未见异常,低剂量组小鼠肺组织可见淤血、出血、支气管扩张出血,肺泡腔内有少量炎性渗出物、支气管周围炎、间质性肺炎、小叶性肺炎等;高剂量组小鼠肺组织可见支气管扩张出血,支气管腔内有大量炎性渗出物,支气管周围肺泡扩张,间质性肺炎、小叶性肺炎、融合性小叶性肺炎;低剂量组肝细胞水肿,可见点状坏死和小灶性坏死;高剂量组小鼠肝组织损伤严重,肝细胞排列紊乱,多数肝细胞呈细胞水肿,肝细胞胞质成空泡状,可见明显的点状坏死和小灶性坏死,并伴有炎细胞浸润,坏死区周围肝细胞细胞质呈嗜酸性变,轻度核固缩,并且肝细胞呈不同程度的胞质疏松,肝窦以及肝中央静脉扩张有广泛变性、坏死等病理改变.睾丸、心、脾、肾未见明显异常.结论 小鼠腹腔注射本试验剂量的硫酸铍后主要引起肺组织和肝脏损伤,其它脏器未见明显异常.
语种:
中文
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毛细管气相色谱测定染发剂中苯二胺
作者:
薛金花;梁超;李程
期刊:
应用化工 ,2011年40(2):349-352 ISSN:1671-3206
作者机构:
[薛金花; 梁超; 李程] 南华大学公共卫生学院
关键词:
气相色谱法;苯二胺;染发剂;毛细管柱
摘要:
建立了毛细管气相色谱法测定染发剂中邻,间,对苯二胺含量的分析方法.样品用乙酸乙酯,超声波提取,离心除去杂质,然后采用毛细管分离,FID检测,保留时间定性,峰面积定量.苯二胺三种异构体在0.0110 g/L浓度范围内线性关系良好,相关系数为0.999 50.999 6;邻苯二胺,对苯二胺,间苯二胺加标回收率分别为88.6%97.8%,93.3%105.0%,88.5%99.1%,相对标准偏差为1.94%2.05%(n=7),检出限分别为2,2.5,2 ng/mL.该方法简单,快速应用于实际样品测定,结果满意
语种:
中文
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丙烯酰胺对PC12细胞损伤及机制研究
作者:
李程;王穆;吴剑阁;何翠琳;李盼盼;...
期刊:
实用预防医学 ,2011年18(10):1826-1829 ISSN:1006-3110
作者机构:
南华大学公共卫生学院环境医学与放射卫生研究所,湖南衡阳,421001;[吴剑阁] 衡阳市疾病预防控制中心;南华大学公共卫生学院2006级卫生检验专业;[让蔚清; 杨慧仙; 李盼盼; 何翠琳; 何爱桃; 李程; 王穆] 南华大学
关键词:
丙烯酰胺;PC12细胞;MTT比色法;单细胞凝胶电泳技术;丙二醛;总抗氧化能力
摘要:
目的 探讨丙烯酰胺(AA)对PC12细胞的细胞毒性及可能机制.方法 分别以0、62.5、125、250、500、1 000μmol/L AA为染毒剂量,染毒12 h后,采用MTT比色法检测丙烯酰胺对体外培养PC12细胞的增殖抑制作用,并用碱性单细胞凝胶电泳技术(single cell gel electrophoresis,SCGE)检测PC12细胞DNA的损伤作用、用MDA和T-AOC试剂盒检测细胞MDA和T-AOC改变.结果 染毒12 h后,细胞生长受到明显的抑制,且染毒剂量越高,抑制作用越明显(P<0.01);单细胞凝胶电泳实验表明,AA对体外培养PC12细胞的DNA有明显的损伤作用,细胞上清液中MDA含量随着染毒量的上升而升高,T-AOC含量随染毒量的上升而降低.结论 AA能够显著抑制PC12细胞活性,损伤细胞DNA,并诱导细胞氧化损伤.
语种:
中文
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衡阳市淀粉类油炸食品中丙烯酰胺含量调查
作者:
李程;龚琴;向艳;何爱桃
期刊:
实用预防医学 ,2011年18(8):1448-1449 ISSN:1006-3110
作者机构:
南华大学公共卫生学院,湖南,衡阳,421001;南华大学2004级卫生检验班;[龚琴; 何爱桃; 向艳; 李程] 南华大学
关键词:
淀粉;油炸食品;丙烯酰胺;调查
摘要:
目的 了解衡阳市淀粉类油炸食品中丙烯酰胺含量情况.方法 对衡阳市市售淀粉类油炸食品进行随机采样,在选定的色谱条件下,固相萃取-高效液相色谱法测定样品中的丙烯酰胺含量.结果 8种淀粉类油炸食品:薯条、饼干、油条、油饼、蛋糕、烤面包、麻花和方便面中丙烯酰胺平均含量依次为1 082,715,390,281,165,118,92,54μg/kg;8种淀粉类油炸食品中丙烯酰胺的含量不同(F=126.44,P<0.01),麻花和烤面包两类食品的丙烯酰胺的含量差异无统计学意义(P>0.05),其余各种淀粉类油炸食品的丙烯酰胺含量间差异均有统计学意义(P<0.05).结论 8种淀粉类油炸食品中丙烯酰胺含量均远远超过世界卫生组织规定的饮水中丙烯酰胺的限量水平,应引起重视.
语种:
中文
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预防医学开放性实验室管理模式及运行机制的探索
作者:
李程;龙鼎新;何爱桃;于军晖;周孝元;...
期刊:
中国高等医学教育 ,2010年(5):39-40,83 ISSN:1002-1701
作者机构:
南华大学公共卫生学院,湖南,衡阳,421001;[让蔚清; 龙鼎新; 何爱桃; 周孝元; 李程; 于军晖] 南华大学
关键词:
预防医学;开放性实验室;管理模式;运行机制
摘要:
通过分析预防医学实验室管理模式及运行现况,提出了目前预防医学实验室管理存在的问题。按照国家实验教学示范中心建设的要求,提出开放性实验室管理模式及运行机制。该研究有利于培养学生的创新精神、实践能力。
语种:
中文
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白藜芦醇抗炎作用与氨基脲敏感性胺氧化酶活性的关系
作者:
郑翔;曹霞飞;王敏;李程;张鹏;...
期刊:
营养学报 ,2010年32(6):560-563,569 ISSN:0512-7955
作者机构:
[郑翔; 曹霞飞; 王敏; 李程; 张鹏; 让蔚清] 南华大学公共卫生学院环境医学与放射卫生研究所
关键词:
白藜芦醇;二溴乙胺;急性肺损伤
摘要:
目的观察白藜芦醇(resveratrol, Res)的抗炎作用,分析抗炎效应与氨基脲敏感性胺氧化酶(semicarbazide sensitive amine oxidase,SSAO)的关系,探讨Res抗炎作用新机制.方法将雄性新西兰兔34只,随机分成对照组(n=4),脂多糖(lipopolysaccharide,LPS)组(n=6),Res预防组(30,60,120mg/kg,n=6)和2-溴乙胺(2-bromoethylamine,2-BEA)组(n=6).对照组不做处理,其它各组分别给予1%二甲基亚砜(dimethyl sulfoxide,DMSO,ip),Res(30,60,120mg/kg,ip)和2-BEA(10mg/kg,iv),并立即进行气管插管灌注LPS建立急性肺损伤的动物模型,.ELISA法测定16h血清IL-1β,IL-6,PGE2,iNOS等炎症因子水平,高效液相色谱法测定16h血浆SSAO活性.结果对雄性新西兰兔气管插管灌注LPS,实验动物血清IL-1β,IL-6,iNOS水平,血浆SSAO活性明显高于对照组(P<0.05);三个剂量的Res降低LPS所致的炎症模型动物血清IL-1β,IL-6,PGE2,iNOS水平,血浆SSAO活性,其中60,120mg/kg Res明显抑制炎症反应(P<0.05).三个剂量的Res明显降低LPS所致的炎症模型动物肺湿重/干重比值(W/D,P<0.05),不同程度的减轻LPS诱导的急性肺损伤程度.结论 Res具有减轻模型动物急性肺损伤效应,降低动物血清IL-1β,IL-6,PGE2,iNOS等炎症因子水平,抑制动物血浆SSAO活性,其抗炎效应与SSAO活性降低有关
语种:
中文
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