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Jun Wu, Jian Lu, Leiming Li, Xiuyun Min, Yongming Luo
The Qinghai-Tibet Plateau, especially the northeastern region, is not a pure land any more due to recently increasing anthropogenic activities. This study collected soil samples from 70 sites of the northeastern Qinghai-Tibet Plateau to evaluate pollution, ecological-health risks, and possible pollution sources of heavy metals. The concentrations of heavy metals in soil were relatively high. Values of geo-accumulation index exhibited that Hg pollution was the most serious meanwhile Hg possessed the strongest enrichment feature based on enrichment factor values...
February 21, 2018: Chemosphere
Yantao Wu, Li Li, Guoqiang Zhu, Wenhui Li, Nianzhang Zhang, Shuangnan Li, Gang Yao, Wenjun Tian, Baoquan Fu, Hong Yin, Xingquan Zhu, Hongbin Yan, Wanzhong Jia
BACKGROUND: Cervids used to be considered the only animal intermediate hosts of the G10 genotype of Echinococcus canadensis. Yaks are often herded in the Qinghai-Tibet Plateau, China, where echinococcosis remains prevalent. However, no E. canadensis G10 cases have been recorded in yaks until now. The aim of our study was to identify causative agents of echinococcosis in yaks in this region. METHODS: Total genomic DNA was extracted from the germinal layer of one hydatid using a Blood and Tissue Kit...
March 9, 2018: Parasites & Vectors
Lin Chen, Zhancheng Gao
BACKGROUND: A high incidence and mortality of plague in the past two decades occurred in the Qinghai-Tibet Plateau, China. High dose streptomycin (6-8 g/d) remained the first practical strategy for controlling the progressive, vicious clinical circumstances for patients with pneumonic plague in the Plateau, as opposed to the routine dosage recommended by the World Health Organization. To investigate whether patients with pneumonic plague truly required a large dosage of streptomycin in the hypoxic environment of the Tibetan Plateau, we investigated the hypothesis that hypoxic environment would change the pharmacokinetics of streptomycin in vivo...
March 9, 2018: BMC Infectious Diseases
Wenjie Liu, Shengyun Chen, Junyi Liang, Xiang Qin, Shichang Kang, Jiawen Ren, Dahe Qin
The objective of this study is to investigate the effect of decreased permafrost stability on carbon storage of the alpine ecosystems in the northeastern margin of the Qinghai-Tibet Plateau. During July and August 2013, we selected 18 sites in five types of permafrost (stable, substable, transitional, unstable, and extremely unstable) regions. We measured aboveground phytomass carbon (APC) and soil respiration (SR), soil inorganic carbon (SIC), soil organic carbon (SOC), belowground phytomass carbon, and soil properties down to 50 cm at same types of soils and grasslands...
March 8, 2018: Scientific Reports
J T Lin, W Q Wang, X Zhou, K S Yin, C T Liu, C Z Wang, M Huang, P Chen, Y D Yuan, S X Cai, C G Wu, J Li, Q C Lin, J Y Zhou, H G Liu, Y H Gu, X G Huang, D J Sun, X H Yang, L Yang, J M Huo, Z C Chen, W Zhou, P Jiang, H P Tang, R Y Liu, W Zhang, Y Q Chen, Y J Huang, X J Liu, L M Dai, X W Ye, C P Hu, J Zhang, J Y Xu
Objective: To evaluate the changes of asthma control, disease management and perception in recent years in China. Methods: We conducted 2 multi-center, cross-sectional surveys. Outpatient asthmatic patients from 10 cities in mainland China (2007-2008) and 30 central cities from 30 provinces in China (except Tibet)(2015-2016) were recruited respectively. Data of asthma control, disease management and perception from the 2 surveys were compared for 10 cities which took part in both of the 2 surveys. Chi-square test was used for comparison between groups...
March 12, 2018: Chinese Journal of Tuberculosis and Respiratory Diseases
Jun Feng, Hong Tu, Li Zhang, Shaosen Zhang, Shan Jiang, Zhigui Xia, Shuisen Zhou
BACKGROUND: China has initiated the National Malaria Elimination Action Plan, which aims to eliminate malaria by 2020. However, the transmission of malaria occurs sporadically or in distinct foci, which greatly hampers progress toward elimination in China and other countries. The object of this study was to foci categorization and evaluates whether the response met the requirements issued by the nation or WHO. METHODS: Residual transmissions were investigated and located with fine spatial resolution mapping from parasitological confirmed malaria cases by use of routine national surveillance data...
March 7, 2018: BMC Infectious Diseases
Yunfu Gu, Yan Bai, Quanju Xiang, Xiumei Yu, Ke Zhao, Xiaoping Zhang, Chaonan Li, Songqing Liu, Qiang Chen
Soil microbes provide important ecosystem services. Zoige Plateau wetland, the largest alpine peat wetland in the world, has suffered from serious degradation in the past 30 years. We studied the composition of the Zoige Plateau alpine wetland soil microbiota and relations among specific taxa using 16S rRNA amplicon sequencing combined with association network analysis. Compared to the pristine swamp soil, taxons DA101, Aeromicrobium, Bradyrhizobium, and Candidatus Nitrososphaera were enriched and several methanogenic Euryarchaeota were depleted in the moderately degraded meadow soil and highly degraded sandy soil...
March 1, 2018: Scientific Reports
Zhi-Min Liu, Ji-Feng Zhao, Song-Yun Qin, Xiang Liu, Chang-Hua Wang, Zhi-Wei Zhang, Wei-Zao Luo, Guo-Yue Zhong
The study is aimed to clarify the actual original plant, find out the usage status and the resource distribution of the Tibetan medicinal plant "Bangga". By using the way of the literatures survey, interview and investigation, it found out that the actual original plant of the Tibetan medicinal plant "Bangga" were the whole dried plant or the aerial part of Aconitum tanguticum or A. naviculare of Ranunculaceae, among which A. tanguticummainly distributed in Sichuan, Gansu, Qinghai, Tibet (Qamdo), and A...
December 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Supen Wang, Liqing Fan, Conghui Liu, Jiaqi Li, Xu Gao, Wei Zhu, Yiming Li
Identifying the origins of alien species has important implications for effectively controlling the spread of alien species. The black-spotted frog Pelophylax nigromaculatus , originally from East Asia, has become an alien species on the Tibetan Plateau (TP). In this study, we collected 300 individuals of P. nigromaculatus from 13 native regions and 2 invasive regions (including Nyingchi and Lhasa) on the TP. To identify the source region of the TP introductions, we sequenced portions of the mitochondrial cyt b gene...
December 2017: Current Zoology
Maoyi Tian, Xuejun Yin, Danzeng Dunzhu, Zhong Liu, Cong Li, Hao Sun, Ci Song, Laba Sangzhu, Anushka Patel, Julie Redfern, Lijing L Yan
BACKGROUND: The simplified cardiovascular management (SimCard Study) program was a cluster randomized controlled trial conducted in Tibet, China to evaluate a multifaceted intervention consisting of appropriate medication prescriptions and lifestyle recommendations delivered by village doctors. The intervention was effective in improving the management of cardiovascular diseases in resource-limited settings. The aim of this qualitative study was to examine stakeholder feedback and to inform future research and scaling up...
March 1, 2018: Globalization and Health
Wen-Bin Yu, Christopher P Randle, Lu Lu, Hong Wang, Jun-Bo Yang, Claude W dePamphilis, Richard T Corlett, De-Zhu Li
Phtheirospermum (Orobanchaceae), a hemiparasitic genus of Eastern Asia, is characterized by having long and viscous glandular hairs on stems and leaves. Despite this unifying character, previous phylogenetic analyses indicate that Phtheirospermum is polyphyletic, with Phtheirospermum japonicum allied with tribe Pedicularideae and members of the Ph. tenuisectum complex allied with members of tribe Rhinantheae. However, no analyses to date have included broad phylogenetic sampling necessary to test the monophyly of Phtheirospermum species, and to place these species into the existing subfamiliar taxonomic organization of Orobanchaceae...
2018: Frontiers in Plant Science
Jiang Y Zeng, Dor J Ciren, Dun Z Yundan, Qiong Pu, Cai W Gongjue, Dor J Jiumei, Ian D Robertson
Background: Little information is available regarding the knowledge, attitudes and practices (KAP) of the owners of yaks in Tibet with respect to brucellosis. Methods: This manuscript reports on the results of a cross-sectional survey using a structured questionnaire investigating the KAP of 317 yak herders from 34 villages in the three main yak-rearing counties of Maizhokunggar, Damxung and Yadong from April to August 2015. Results: Although 60...
February 17, 2018: International Health
Li Lei, Mujeeb Ur Rehman, Shucheng Huang, Lihong Zhang, Lei Wang, Khalid Mehmood, Hui Zhang, Xiaole Tong, Meng Wang, Jiakui Li
This study was conducted to test the distribution of diarrheagenic Escherichia coli (DEC) associated genes in fecal isolates from diarrheic yaks of a high remote region of China. Briefly, we obtained 203 fecal samples from diarrheic adult yaks and E. coli strains were isolated and identified via standard methods The antibiotic sensitivity of isolates was determined via disk diffusion method and polymerase chain reaction (PCR) was used to detect the DEC virulence associated genes. Results of the current study showed a high rate of resistance to tetracycline (93...
February 19, 2018: Acta Tropica
Liu Hui, Xiao Ning, Yang Shi-Jie, Wang Dong, Peng Jia
The Qinghai-Tibet Plateau is known as one of the highest endemic areas of echinococcosis. However, the dog infection rates of Echinococcus granulosus in the plateau regions were similar to other non-Tibetan areas with the high endemic, and most of the rates were below 40%. The infected dogs with E. multilocularis were ubiquitous in Ganzi Prefecture of Sichuan Province and Qinghai Province where many survey data were done and available, which was much different from those in non-Ti-betan areas where the geographical distribution of dogs infected with E...
April 7, 2017: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
Mohammad Pourkheirandish, Hiroyuki Kanamori, Jianzhong Wu, Shun Sakuma, Frank R Blattner, Takao Komatsuda
Wild barley forms a two-rowed spike with a brittle rachis, whereas domestic barley has two- or six-rowed spikes with a tough rachis. As does domestic barley, "agriocrithon" forms a six-rowed spike; however the spike is brittle the same as wild barley, which makes the origin of agriocrithon obscure. Haplotype analysis of the Six-rowed spike 1 (vrs1) and the Non-brittle rachis 1 (btr1) and 2 (btr2) genes was conducted to infer the origin of agriocrithon barley. Some agriocrithon barley accessions (eu-agriocrithon) carried Btr1 and Btr2 haplotypes that are not found in any cultivars, implying that they are directly derived from wild barley through a mutation at the vrs1 locus...
February 22, 2018: Plant Journal: for Cell and Molecular Biology
Kun Li, Jinhuan Jiang, Muhammad Shahzad, Hui Zhang, Khalid Mehmood, Xiong Jiang, Xiaodong Zhao, Houqiang Luo, Xiaole Tong, Jiakui Li
Diarrhea a serious disease, reported to be related with changes in microbial diversity is widely epidemic in the yaks on the Qinghai Tibet plateau. Herein, we preformed high-throughput sequencing of the parasitic diversity in 3 groups of yaks i.e. healthy adult yaks (HA), diarrheic adult yaks (DA) and diarrheic yak calves (DC) in Gannan Tibetan Autonomous Prefecture. The results showed that 2 Phyla, 3 Classes, 5 Orders, 4 Families and 6 Genera were discovered in HA yaks; 2 Phyla, 3 Classes, 6 Orders, 6 Families and 8 Genera were found in DA yaks while 2 Phyla, 5 Classes, 5 Orders, 10 Families and 7 Genera were observed in DC yaks...
February 17, 2018: Microbial Pathogenesis
Jingjing Sun, Mengxin Xing, Wei Wang, Fangqun Dai, Junzhong Liu, Jianhua Hao
A Gram-stain-negative, rod-shaped, red-pigmented, aerobic bacterium, strain M2T , was isolated from a seawater sample collected from the western Pacific Ocean at a depth of 1000 m and characterized using polyphasic taxonomy. Strain M2T was catalase-positive and oxidase-negative. Cells grew at 4-33 °C (optimum, 25 °C), at pH 6-9 (optimum, 7) and with 0-4 % (w/v) (optimum, 1 %) NaCl. Phylogenetic trees based on 16S rRNA gene sequences showed that strain M2T was associated with the genus Hymenobacter. Strain M2T showed the highest 16S rRNA gene sequence similarities to Hymenobacter actinosclerus CCUG 39621T (95...
February 2, 2018: International Journal of Systematic and Evolutionary Microbiology
Kun Li, Khalid Mehmood, Hui Zhang, Xiong Jiang, Muhammad Shahzad, Xiaoqian Dong, Jiakui Li
Diarrhea is a serious epidemic in yaks on Qinghai Tibet plateau, but the exact pathogen is not confirmed. Diarrhea is related to the changes in diversity of intestinal flora. The current study herein is performed for high-throughput sequencing of fungus microbial diversity in healthy adult yaks, diarrheal adult yaks and diarrheal yak calves in Gannan Tibetan Autonomous Prefecture. A total 446726 optimized sequences were achieved. Over 250 OTUs in species level have been indentified for each sample. The Shannon and Simpson index revealed that there was no visible difference in the flora between different yak groups (p > 0...
February 15, 2018: Acta Tropica
Tafeng Hu, Junji Cao, Chongshu Zhu, Zhuzi Zhao, Suixin Liu, Daizhou Zhang
Many studies indicate that the atmospheric environment over the southern part of the Tibetan Plateau is influenced by aged biomass burning particles that are transported over long distances from South Asia. However, our knowledge of the particles emitted locally (within the plateau region) is poor. We collected aerosol particles at four urban sites and one remote glacier site during a scientific expedition to the southeastern Tibetan Plateau in spring 2010. Weather and backward trajectory analyses indicated that the particles we collected were more likely dominated by particles emitted within the plateau...
February 14, 2018: Science of the Total Environment
Lulu Cui, Bu Duo, Fei Zhang, Chunlin Li, Hongbo Fu, Jianmin Chen
This paper presents a detailed study on the indoor air pollution in the Jokahng Temple at Tibet Plateau, and its implication to human health. The mean concentrations of PM 1.0 and PM 2.5 were 435.0 ± 309.5 and 483.0 ± 284.9 μg/m 3 , respectively. The PM 2.5 concentration exceeded the National Ambient Air Quality Standard (75 μg/m 3 ) by 6.4 times. The size-segregated aerosols displayed a bimodal distribution. One peak was observed in the fine mode (0.4-2.1 μm) and the other peak appeared in the coarse mode (2...
February 13, 2018: Environmental Pollution
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