排序方式: 共有23条查询结果,搜索用时 317 毫秒
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Chunhua Liu Xijin Xu Xia Huo 《Environmental science and pollution research international》2014,21(8):5457-5464
Anogenital distance (AGD), a useful anthropometric measurement for genital development in both animals and humans, was originally found by reproductive toxicologists in rodent experiments. As an easy-to-measure and sensitive marker, AGD has become a bioassay of fetal androgen action and a well-established reproductive toxicity endpoint in animals. It is generally accepted that AGD is sexually dimorphic in many mammals, with males having longer AGD than females. Exposure to proposed endocrine disruptors may result in reduced AGD; thus, it has been used to measure health effects of compounds with endocrine-altering properties or endocrine-disrupting chemicals (EDCs) in environmental toxicology. Moreover, AGD is an important clinical measure to address endocrine-sensitive endpoints in the first year of life and to assess the adverse impact of in utero exposure to environmental EDCs. Recently, AGD has been identified as one of the endpoints in the US Environmental Protection Agency guidelines for reproductive toxicity studies in humans, but use of AGD in human studies is still rare, and the results remain mixed and inconclusive due to many reasons. In order to achieve a breakthrough, researchers are endeavoring to standardize the measurement of AGD, normalize age-specific population data in different ethnic groups, and conduct more in-depth human researches in this field. 相似文献
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Chen Zihan Huo Xia Chen Guangcan Luo Xiuli Xu Xijin 《Environmental science and pollution research international》2021,28(23):28833-28847
Environmental Science and Pollution Research - Lead (Pb) is a heavy metal with widespread industrial use, but it is also a widespread environmental contaminant with serious toxicological... 相似文献
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Yan Li Xia Huo Junxiao Liu Lin Peng Weiqiu Li Xijin Xu 《Environmental monitoring and assessment》2011,177(1-4):343-351
This study aimed to determine the levels of placental cadmium (PCd) and cord blood cadmium (CBCd) and the resulting expression of placental metallothionein (MT) in neonates and to investigate cadmium (Cd) exposure levels in neonates and mothers who live in Guiyu, China, an electronic waste (e-waste) pollution site. Among the 423 mothers included in the study from 2004/2005 to 2007, 289 lived in Guiyu (exposed group) and 134 lived in Chaonan, located 10 km away from Guiyu (controls) and had never been exposed to e-waste pollution. CBCd and PCd levels were measured by atomic absorption spectrometry. Placental MT was examined by immunohistochemistry. Information on maternal and neonatal characteristics and exposure conditions was obtained from hospital records and by personal interviews. For the 3 years, the median CBCd was higher for Guiyu neonates than for controls (3.61 vs. 1.25 ??g/L), with 25.61% of Guiyu subjects exhibiting a median CBCd that exceeded the safety limit defined by the World Health Organization (5 ??g/L), as compared with 14.18% of control neonates (p < 0.01). In Guiyu, the mean PCd was higher than that for controls (0.17 ± 0.48 vs. 0.10 ± 0.11 ??g/g, p ?? 0.01). The high levels of CBCd and PCd were significantly associated with parents?? occupational and environmental exposure to e-waste recycling pollutants. Staining for MT was positive and dense for 67.00% (67/100) of Guiyu neonates as compared with 32.69% (17/52) of controls (p < 0.01). Exposure to e-waste recycling pollutants increased Cd exposure in neonates, which was accompanied by increased placental MT expression. 相似文献
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Li Minghui Huo Xia Davuljigari Chand Basha Dai Qingyuan Xu Xijin 《Environmental geochemistry and health》2019,41(1):225-247
Environmental Geochemistry and Health - MicroRNAs (miRNAs) are a class of small, noncoding RNA species that play crucial roles across many biological processes and in the pathogenesis of major... 相似文献
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Qin Qilin Xu Xijin Dai Qingyuan Ye Kai Wang Chenyang Huo Xia 《Environmental geochemistry and health》2019,41(1):93-123
Environmental Geochemistry and Health - This paper reviews the concentrations of persistent organic pollutants (POPs) in atmosphere of an electronic waste (e-waste) recycling town, Guiyu, in... 相似文献
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采用自行设计的收集、吸收方法回收湿法聚氨酯(Pu)合成革生产废气中的N,N-二甲基甲酰胺(DMF),废气由集气罩收集,经填料吸收塔被水吸收后,出口废气中DMF质量浓度小于14.5mg/m^3,远低于国家标准40mg/m^3的排放要求,整个吸收塔DMF的吸收率达95%。采用自主开发的节能型三塔工艺回收废水中的DMF,废水处理能力达13.8t/h,DMF回收率达99%以上,回收的DMF纯度为99.95%。以3条湿法PU合成革生产线计,采用节能型三塔回收工艺,预计每年可增加效益354.3万元。 相似文献
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Wang Qihua Xu Xijin Cong Xiaowei Zeng Zhijun Xu Long Huo Xia 《Environmental geochemistry and health》2019,41(1):191-210
Environmental Geochemistry and Health - Asthma, as one of the most common chronic diseases in children and adults, is a consequence of complex gene–environment interactions. Polycyclic... 相似文献
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