共查询到19条相似文献,搜索用时 187 毫秒
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徐格 《广东微量元素科学》2001,8(5):19-22
HIV感染及AIDS至今依然严重威胁着人类的生命,因而成为医学界研究的热点。本文着重从硒与细胞因子角度揭示硒与HIV和AIDS在发生、发展中的关系,证明其扮演的重要角色,提示了一种研究HIV和AIDS的新方向。 相似文献
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硒补充:防治艾滋病的有效新策略 总被引:1,自引:0,他引:1
从以下四方面:(1)低硒——引发艾滋病的基础性因素,(2)病毒复制——进一步消耗体内的硒,(3)硒水平——艾滋病结局的独立预测指标,(4)硒补充——防治艾滋病的有效新策略,详细论述了硒在艾滋病发生、发展和结局中的作用,列举了硒剂防艾滋病干预试验的某些初步结果。如能采用理想的“硒”,并在随机化、大样本量的对照试验中得到进一步证实,则硒补充作为一种简单易行、消费得起的干预措施,可能具有公共健康效益。 相似文献
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秦俊法 《广东微量元素科学》1996,3(12):1-7
从艾滋病的病理特征与微量元素缺乏症的类似性,艾滋病患者的微量元素含量变化,艾洋患者微量元素补充等方面综述了艾滋病与微量元素的联系,讨论了微量元素在防治艾滋病中的可能作用,附31篇参考文献。 相似文献
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微量元素与艾滋病相关标志物 总被引:1,自引:2,他引:1
人类免疫缺陷病毒(HIV)感染病程监督是防治艾滋病的重要措施和手段。阐述了微量元素在HIV病变进程中的变化及与其它相关标志物的关系,内容包括:微量元素与HIV病变、微量元素与CD4淋巴细胞、微量元素与谷胱甘肽、微量元素与HIV消瘦综合征,以及微量元素与炎性反应标志等5个方面。迄今的研究表明,微量元素可以作为反映HIV感染疾病进展的一种新的替代标志物。 相似文献
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微量元素硒与人体健康的研究 总被引:12,自引:2,他引:12
就微量元素硒对人体健康的影响,生理作用,致病机理和药物治疗等方面进行了比较系统的研究和阐述,为阐述上一些疾病的诊断和治疗提供参考。 相似文献
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李贵升 《广东微量元素科学》1996,3(5):58-60
对2434例视力不好的7~15岁的少年儿童进行临床观察,其中近视1284例,远视1046例,散光98例,斜视4例,其它2例.文献表明视力不好原因之一与微量元素硒不足有关。人体眼睛内含硒量很高,虹膜及水晶体的含硒量更为丰富,如果少年儿童不注意光线长期看书、看电视引起眼肌过度疲劳。使体内的硒含量降低。容易使视力下降。故在治疗中适当地补充微量元素硒,对提高视力收到显著的效果。并提示保护少儿视力,供给含硒丰富的食物非常重要。 相似文献
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就硒缺乏症、硒与透析的关系,检查了慢性肾功不全患者血清中的硒,其浓度为9.8±1.9μg/dL,正常人的血清中,硒浓度为13.7±2.6μg/dL.并对慢性肾功不全的患者进行透析,测定其血清中硒浓度为10.7±3.1μg/dL.结果表明:慢性肾功不全患者血清中硒浓度低于正常人血清中画浓度,经透析后血清中硒浓度虽有上升,但仍不如正常人,并且随着透析期间的延长血清中硒浓度逐渐下降. 相似文献
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人体微量元素硒营养 总被引:7,自引:0,他引:7
蒋彬 《广东微量元素科学》2002,9(2):1-6
硒是人体必需的微量元素。环境系统中的硒含量差异较大,缺硒现象普遍。利用天然食品摄取硒营养是安全,有效,可行的途径。 相似文献
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J.L. Burguera P. Carrero M. Burguera C. Rondon M.R. Brunetto M. Gallignani 《Spectrochimica Acta Part B: Atomic Spectroscopy》1996,51(14):1837-1847
An on-line flow injection system has been developed for the selective determination of Se(IV) and Se(VI) in citric fruit juices and geothermal waters by hydride generation atomic absorption spectrometry with microwave-aided heating prereduction of Se(VI) to Se(IV). The samples and the prereductant solutions (4 mol l−1 HCl for Se(IV) and 12 mol l−1 HCl for Se(VI)) which circulated in a closed-flow circuit were injected by means of a time-based injector. This mixture was displaced by a carrier solution of 1% v/v of hydrochloric acid through a PTFE coil located inside the focused microwave oven and mixed downstream with a borohydride solution to generate the hydride. The linear ranges were 0–120 and 0–100 μg l−1 of Se(IV) and Se(VI), respectively. The detection limits were 1.0 μg l−1 for Se(IV) and 1.5 μg l−1 for Se(VI). The precision (about 2.0–2.5% RSD) and recoveries (96–98% for Se(IV) and 94–98% for Se(VI)) were good. Total selenium values were also obtained by electrothermal atomic absorption spectrometry which agreed with the content of both selenium species. The sample throughput was about 50 measurements per hour. The main advantage of the method is that the selective determination of Se(IV) and Se(VI) in citric fruit juices and geothermal waters is performed in a closed system with a minimum sample manipulation, exposure to the environment, minimum sample waste and operator attention. 相似文献
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宫颈癌是女性生殖系统常见的恶性肿瘤之一,在女性肿瘤发病率中占第二位。通过对其病因学的研究,大多学者期望更多的掌握宫颈癌的发病原因及机理。目前研究认为高危HPV感染、性生活、孕产次、种族、饮食等多种因素与宫颈癌的发生发展都有明显相关性;而人体的微量元素不仅对于宫颈癌的发生,而且对其预后都产生着重大的影响。现对现有的研究所得出的微量元素与宫颈癌发生发展的关系以及治疗做一综述。 相似文献
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Gallignani M Valero M Brunetto MR Burguera JL Burguera M Petit de Peña Y 《Talanta》2000,52(6):1015-1024
In this study a flow injection (FI) system used in conjunction with hydride generation (HG), atomic absorption spectrometry (AAS) and microwave (MW) aided pre-reduction of selenite (Se(IV)) to selenate (Se(IV)) with HCl:HBr has been developed in order to differentiate both inorganic selenium species. As full control of the MW reduction step is possible, the experimental approach allows the use of milder acidic conditions (10% v/v of HCl and HBr) than those conventionally accomplished with hydrochloric acid alone (≥50% v/v). Experimental parameters were optimized by the univariate optimization method. In either case, the linear range was from 1.0 to 30 μg l−1. The detection limits based on 3σ of the blank signal were 0.25 μg l−1 for Se(IV) and 0.30 μg l−1 for Se(VI). The reproducibility, about 3% RSD and recoveries of different amounts of Se(VI) and Se(IV) added to water and orange juice samples (97–103%) were good. The main advantage of the proposed method is that the sequential determination of Se(IV) and Se(VI) is performed at a high sampling frequency (ca. 50 samples per h) in a closed system without Se losses, and with a minimum sample waste, operator attention, and sample manipulation. 相似文献
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秦俊法 《广东微量元素科学》2014,(10):30-35
中国微量元素研究取得了处于国际前沿的研究成果,逐渐形成了具有中国特色的微量元素医学的完整体系,形成了元素基础医学学派、元素形态分析学派和元素组学研究学派。微量元素知识普及、期刊论文和会议论文、学位论文、专利项目、基金资助项目、图书出版、元素形态分析、微量元素组学等8个方面发生了翻天覆地的变化。首创微量元素组学研究,成功地破解了临床医学和中药传统理论中一系列关键问题,发现微量元素的双面效应。 相似文献