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238 results on '"Diao, Xiaoping"'

32. Comparative Assessment of Microplastics in Surface Water and Sediments of Meishe River, Haikou, China.

Author

Wen, Shaobai, Yu, Chunwei, Lin, Fang, and Diao, Xiaoping

Abstract

Meishe River is the longest urban river in Haikou. The level of microplastics pollution in this river may affect the ecological balance, and can have an adverse effect on human health. Thus, it is essential to gain a comprehensive understanding of the microplastics pollution in the river to ensure safety of the human living environment. Microscopic examination and Micro-Fourier Transform Infrared Spectroscopy (μ-FTIR) were used to investigate the distribution and characteristics of microplastic pollution in surface water and sediments of the Meishe River. The results revealed that microplastics extracted from Meishe River mainly consisted of polyethylene (PE) and poly octadecyl acrylate (POA), and the abundance of microplastics in the surface water and sediments lay in the range of 3–10 items/L and 61–205 items/100 g dry weight, respectively. With respect to shapes and colors of microplastics, among the micro plastics found in the surface water, 74% were fiber and 57% were white colored, while among those in the sediments, 88% were fiber and 55% were of white colored. In terms of particle size, microplastics with the particle size of 0.1–0.5 mm were the most abundant (49% approximately) in surface water, while the microplastics with particle size 1.0–5.0 mm were dominant (74%) in the sediments. The results clearly showed that the Meishe River was polluted by microplastics, which may eventually flow into the nearby sea and adversely affect the sea environment. Consequently, some organisms in the urban river may be adversely affected. [ABSTRACT FROM AUTHOR]

Published
2022
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37. Sustaining China's coastal resources: Recommendations to improve the state of the coasts in Hainan

Author

Zhanga, Jialin, Jennerjahn, Tim, Wang, Daoru, Diao, Xiaoping, Rixen, Tim, Nordhau, Inga, Zhao, Hongwei, Labrenz, Matthias, Luo, Zhuhua, Pohlmann, Thomas, Chen, Jianfang, Xu, Dongfeng, Drews, Marco, Herbeck, Lucia, Thomsen, Esther, Dsikowitzky, Larissa, Schwarzbauer, Jan, Xiang, Nan, Li, Ping, and Leibniz Centre For Tropical Marine Research

Abstract

这份政策简报以中德合作研究项目成果为基础，分析总结了海南岛热带海岸带生态系统面临的主要威胁及环境响应，并提出了相应可持续管理的建议。 这份报告涵盖了目前在人类活动干扰和气候变化的压力下我们对生态系统结构和功能的最新理解。海南海岸带生态系统的健康和服务供给功能，即自然资源的潜力，已经受到了严重的威胁。

Published
2020
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38. Organ-differential responses to ethanol and kynurenic acid, a component of alcoholic beverages in gene transcription

Author

Diao Xiaoping, Guoshun Wang, Cihan Yang, Yingxia Zhang, Chenghong Liao, Hailong Zhou, and Qian Han

Subjects
0301 basic medicine, Male, Kynurenine pathway, Transcription, Genetic, Alcohol, Pharmacology, Biology, Kynurenic Acid, 03 medical and health sciences, chemistry.chemical_compound, Mice, 0302 clinical medicine, Kynurenic acid, Gene expression, Genetics, Animals, Ethanol, Alcoholic Beverages, Brain, General Medicine, Metabolism, 030104 developmental biology, Tryptophan Metabolite, chemistry, 030220 oncology & carcinogenesis, Kynurenine
Abstract

Excessive alcohol (ethanol) use has long been known to affect human health negatively. However, the underlying molecular basis is incompletely understood. Moreover, consumption of alcohol is often mixed with kynurenic acid (KYNA), an abundant tryptophan metabolite produced during fermentation. The combined effect of ethanol and KYNA on host gene expression has not been investigated. The current study used mice as the model to interrogate the impact of ethanol and/or KYNA on global gene transcription. Adult male mice were administered with 2 g/kg ethanol and/or 0.1 mg/kg KYNA by gavage once a day for a week. Three organs: brain, kidney, and liver were collected and their total RNAs extracted for transcriptome sequencing and quantitative real-time PCR. Gene ontology, Kyoto encyclopedia of genes, and genomes pathway analyses revealed that alcohol affects the three organs differentially. Furthermore, the gene expression profile from alcohol and KYNA co-administration was significantly different from that of alcohol or KYNA administration alone. Strikingly, Indolamine 2,3-dioxygenase 1, a rate-limiting enzyme in tryptophan metabolism, was significantly increased in the brain after a combined exposure of alcohol and KYNA, suggesting that Trp metabolism was skewed towards the kynurenine pathway in the brain. Our systemic analysis provides new insights into the mechanism whereby alcohol and KYNA affects organ functions.

Published
2019

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