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https://www.readbyqxmd.com/read/28920168/the-online-measured-black-carbon-aerosol-and-source-orientations-in-the-nam-co-region-tibet
#1
Xin Zhang, Jing Ming, Zhongqin Li, Feiteng Wang, Guoshuai Zhang
Equivalent black carbon (eBC) mass concentrations were measured by an aethalometer (AE-31) in the Nam Co, central Tibet from 2010 to 2014. Different from previous filter-sampling studies (Ming et al., J Environ Sci 22(11):1748-1756, 2010; Zhao et al., Environ Sci Pollut Res 20:5827-5838, 2013), the first high-resolution online eBC measurement conducted in central Tibet is reported here, allowing to discuss the diurnal variations as well as seasonal variabilities of eBC. Average daily eBC concentration was 74 ± 50 ng/m(3), reflecting a global background level...
September 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28916706/the-expression-of-ldh-c-in-the-skeletal-muscle-of-plateau-pika-ochotona-curzoniae-enhances-adaptation-to-a-hypoxic-environment
#2
Zhi F An, Deng B Wei, Lian Wei, Yang Wang, Lin N Wei
The plateau pika (Ochotona curzoniae) is a species of sprint-running alpine animals in the Qinghai-Tibet Plateau, which is a harsh highland hypoxic environment. Ldh-c is expressed in the testis, sperm and somatic tissues of plateau pika. To reveal the role and physiological mechanisms of sperm-specific lactate dehydrogenase (LDH-C4), in plateau pika to adapt to hypoxic environment, an adenoviral line of pMultiRNAi-Ldhc was constructed and injected into the bilateral biceps femoris of the hind legs. The swimming times of the pikas, and the Ldh-c expression levels, total LDH activities and ATP levels in skeletal muscle, were measured after the pikas were raised in the trapped site for 5 days...
September 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28915257/outbreaks-of-epidemic-keratoconjunctivitis-caused-by-human-adenovirus-type-8-in-the-tibet-autonomous-region-of-china-in-2016
#3
Zhenqiang Lei, Zhen Zhu, Bai Ma Ci Wang, Hong Mei, Hong Li, Dan Zeng Gong Ga, Guo Jie, Mi Ma Bu Chi, Sheng Zhang, Chaofeng Ma, Wenbo Xu
From April to November 2016, two outbreaks of epidemic keratoconjunctivitis (EKC) occurred successively at primary and middle schools in the Tibet Autonomous Region of China, and a total of 197 clinically diagnosed cases were reported. Real-time PCR analyses confirmed that human adenovirus (HAdV) infection was related to these outbreaks. Further studies involving sequence determination and phylogenetic analysis based on the penton base, hexon, and fiber genes indicated that human adenovirus type 8 (HAdV-8), belonging to species D, was responsible for the outbreaks...
2017: PloS One
https://www.readbyqxmd.com/read/28912514/retinal-changes-following-rapid-ascent-to-a-high-altitude-environment
#4
X Tian, B Zhang, Y Jia, C Wang, Q Li
PurposeTo determine what impact rapid ascension to a high-altitude environment has on the retina with the aim of preventing and treating high-altitude oculopathy.Patients and methodsParticipants in the study were members of the Chinese military assigned to the high-altitude environment of the Tibetan plateau. Ninety-one participants were enrolled in the study. Optical coherence tomography was used to measure the thickness of retina-related indicators. Measurements were taken before and after exposure to the high-altitude environment and upon return to the baseline altitude...
September 15, 2017: Eye
https://www.readbyqxmd.com/read/28910201/reentry-high-altitude-pulmonary-edema-in-the-himalayas
#5
Santosh Baniya, Christopher Holden, Buddha Basnyat
Baniya, Santosh, Christopher Holden, and Buddha Basnyat. Reentry high altitude pulmonary edema in the Himalayas. High Alt Med Biol. 16:000-000, 2017.-Reentry high altitude pulmonary edema (HAPE), a subset of HAPE, is a well recognized, life-threatening illness documented almost exclusively in the North and South Americans, who live at high altitude (>2500 m) and return to their homes after a brief sojourn of days to months at lower altitude. This phenomenon has not been reported in Sherpas or other people of Tibetan origin in Nepal or India...
September 14, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28902963/rhizospheric-fungi-and-their-link-with-the-nitrogen-fixing-frankia-harbored-in-host-plant-hippophae-rhamnoides-l
#6
Xue Zhou, Lei Tian, Jianfeng Zhang, Lina Ma, Xiujun Li, Chunjie Tian
Sea buckthorn (Hippophae rhamnoides L.) is a pioneer plant used for land reclamation and an appropriate material for studying the interactions of symbiotic microorganisms because of its nitrogen-fixing root nodules and mycorrhiza. We used high-throughput sequencing to reveal the diversities and community structures of rhizospheric fungi and their link with nitrogen-fixing Frankia harbored in sea buckthorn collected along an altitude gradient from the Qinghai Tibet Plateau to interior areas. We found that the fungal diversities and compositions varied between different sites...
September 13, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28893611/emerging-peak-on-the-phylogeographic-landscape-of-mycobacterium-tuberculosis-in-west-asia-definitely-smoke-likely-fire
#7
Igor Mokrousov, Egor Shitikov, Yuriy Skiba, Sergey Kolchenko, Ekaterina Chernyaeva, Anna Vyazovaya
To date, a major attention was justly given to the global lineages of Mycobacterium tuberculosis. Here, we demonstrated an importance of the minor ones, on an example of intriguing and underestimated NEW-1 family that belongs to Euro-American lineage (lineage 4). Analysis of the global WGS/NGS datasets (5715 strains) identified 2235 strains of Lineage 4 and 66 strains of sublineage L4.5. This latter is marked with RD122 genomic deletion and includes NEW-1 family. Phylogenomic analysis confirmed a separate position of the NEW-1 family that we tentatively designate L4...
September 8, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28888625/fine-mapping-and-conservation-analysis-of-linear-b-cell-epitopes-of-peste-des-petits-ruminants-virus-hemagglutinin-protein
#8
Ruisong Yu, Rui Zhu, Weixiang Gao, Ming Zhang, Shijuan Dong, Bingqing Chen, Li Yu, Chunfang Xie, Fengying Jiang, Zhen Li
Hemagglutinin protein (H), one of the two glycoproteins of peste des petits ruminants virus (PPRV), binds to its receptor on the host cell and acts as a major antigen that induces and confers highly protective immunity in the host. In order to delineate the epitopes on H protein, fine epitope mapping and conservation analysis of linear B-cell epitopes (BCEs) on PPRV H has been undertaken using biosynthetic peptides and rabbit anti-PPRV H sera. Thirteen linear BCEs were identified and their corresponding minimal motifs were located on the H protein of PPRV China/Tibet/Geg/07-30...
September 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28887534/phylogeographic-studies-of-schizothoracine-fishes-on-the-central-qinghai-tibet-plateau-reveal-the-highest-known-glacial-microrefugia
#9
Yangyang Liang, Dekui He, Yintao Jia, Heying Sun, Yifeng Chen
Pleistocene climatic oscillations have greatly influenced the evolutionary history and distribution pattern of most extant species. However, their effects on species on the Qinghai-Tibet Plateau (QTP) are not well understood. To investigate the effects of past climatic shifts, particularly the Last Glacial Maximum (LGM), on plateau fish, we analysed the phylogeographic structure and demographic history of five closely related taxa of the subfamily Schizothoracinae, a representative endemic taxon of the QTP, from nine endorheic lakes on the central QTP and three peripheral exorheic rivers using the mitochondrial control region (D-loop) sequence and 12 microsatellite (SSR) markers...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28873199/cloning-and-functional-characterization-of-the-hbsyr1-gene-encoding-a-syntaxin-related-protein-in-tibetan-hulless-barley-hordeum-vulgare-l-var-nudum-hk-f
#10
Q J Xu, Y L Wang, Z X Wei, H J Yuan, X Q Zeng, N Tashi
Tibetan barley is a staple food for the natives of Qinghai-Tibet Plateau. Drought causes a reduction in barley production. In this study, the full-length cDNA of a gene encoding a syntaxin-associated protein was cloned from the leaves of a drought-resistant variety of barley, "Himalaya 10"; its expression was evaluated during drought stress and rehydration via real-time PCR. The cloned HbSYR1 cDNA sequence was 1300 bp in length, and included an 840-bp open reading frame that encoded 279 amino acids. Sequence analysis predicted the molecular weight of the encoded protein to be 42...
August 31, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28857023/actinomyces-gaoshouyii-sp-nov-isolated-from-plateau-pika-ochotona-curzoniae
#11
Xiangli Meng, Yiting Wang, Shan Lu, Xin-He Lai, Dong Jin, Jing Yang, Jianguo Xu
Two strains (pika_113T and pika_114) of a previously undescribed Actinomyces-like bacterium were recovered from the intestinal contents of plateau pika (Ochotona curzoniae) on the Tibet-Qinghai Plateau, China. Results from biochemical characterization indicated that the two strains were phenotypically homogeneous and distinct from other previously described species of the genus Actinomyces. Based on the comparison of 16S rRNA gene sequences and genome analysis, the bacteria were determined to be a hitherto unknown subline within the genus Actinomyces, being most closely related to type strains of Actinomyces denticolens and Actinomyces timonensis with a respective 97...
August 31, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28853682/thermus-caldifontis-sp-nov-a-thermophilic-bacterium-isolated-from-a-hot-spring
#12
Inam Ullah Khan, Neeli Habib, Firasat Hussain, Wen-Dong Xian, Arshia Amin, En-Min Zhou, Iftikhar Ahmed, Xiao-Yang Zhi, Wen-Jun Li
A thermophilic bacterial strain, designated YIM 73026T was isolated from a sediment sample collected from a hot spring in Tibet, PR China. The taxonomic position of the novel isolate was investigated by a polyphasic approach. The novel isolate was Gram-stain-negative, aerobic and rod-shaped. Colonies were circular, convex, opaque and yellow. The strain grew at 50-70 °C (optimum, 60 °C), pH 6.0-8.0 (optimum, pH 7.0) and in the presence of up to 1.0 % NaCl (w/v). Comparison of the 16S rRNA gene sequences of YIM 73026T and those of other members of the genus Thermus showed sequence similarities ranging from 91...
August 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28846033/metabolic-alterations-of-qinghai-tibet-plateau-pikas-in-adaptation-to-high-altitude
#13
Xue-Feng Cao, Zhen-Zhong Bai, Lan Ma, Shuang Ma, Ri-Li Ge
Cao, Xue-Feng, Zhen-Zhong Bai, Lan Ma, Shuang Ma, and Ri-Li Ge. Metabolic alterations of Qinghai-Tibet plateau pikas in adaptation to high altitude. High Alt Med Biol. 18:219-225, 2017.-To determine specific metabolic alterations in the myocardium of plateau pikas (Ochotona curzoniae) and potential metabolic biomarkers involved in their adaptation to the high-altitude environment of the Qinghai-Tibet Plateau. Ten pikas were captured by traps in the Kekexili Reserve (4630 m a.s.l; n = 5) and at the foot of the Laji Mountain (2600 m a...
September 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28841403/identification-of-quantitative-trait-loci-for-seedling-root-traits-from-tibetan-semi-wild-wheat-triticum-aestivum-ssp-tibetanum
#14
Jian Ma, Wei Luo, Han Zhang, Xiao-Hong Zhou, Na-Na Qin, Yu-Ming Wei, Yaxi Liu, Qian-Tao Jiang, Guo-Yue Chen, You-Liang Zheng, Xiu-Jin Lan
As a primitive hexaploid wheat resource distributed only in Tibet, Tibetan semi-wild wheat (Triticum aestivum ssp. tibetanum Shao) possesses unique characteristics that could be exploited in wheat breeding program. A good root system could offer a stable platform for the above-ground components. Aiming at detecting possible excellent locus for root traits from Tibetan semi-wild wheat, we here identified QTLs for root traits using a recombinant inbred line population derived from a cross between Tibetan semi-wild wheat Q1028 and Zhengmai 9023...
August 25, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28834549/climate-signals-in-tree-ring-%C3%AE-18-o-and-%C3%AE-13-c-from-southeastern-tibet-insights-from-observations-and-forward-modelling-of-intra-to-interdecadal-variability
#15
Xiaomin Zeng, Xiaohong Liu, Kerstin Treydte, Michael N Evans, Wenzhi Wang, Wenling An, Weizhen Sun, Guobao Xu, Guoju Wu, Xuanwen Zhang
Stable isotopes in tree rings are increasingly used as proxies for climatic and ecophysiological changes. However, uncertainties remain about the strength and consistency of their response to environmental variation at different temporal (i.e. seasonal to inter-decadal) scales. We developed 5 yr of intra-seasonal and 62 yr of early- and late-wood δ(13) C and δ(18) O series of Smith fir (Abies georgei var. smithii) on the southeastern Tibetan Plateau, and used a process-based forward model to examine the relative importance of environmental and physiological controls on the isotopic data...
August 23, 2017: New Phytologist
https://www.readbyqxmd.com/read/28822932/hydrochemistry-of-waters-in-snowpacks-lakes-and-streams-of-mt-dagu-eastern-of-tibet-plateau
#16
Guang Zhao, Wei Li, Feng Li, Fu Zhang, Gangcai Liu
There is little available information on hydrochemistry of waters from glacial source to downstream of glacierized catchments. Here we examine the water chemistry of the snowpacks, lakes and streams at eight sampling sites within glacial basin in Mt. Dagu, east Tibetan Plateau. An air mass trajectory model, correlation analysis, Gibbs model, Piper diagram and hydrograph separation analysis were utilized to investigate the characteristics and solutes sources of these waters. Generally, the TDS (Total dissolved solids; 7...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822448/-warning-symptoms-of-asthma-attack-and-asthma-self-management-a-national-asthma-control-survey-from-china
#17
J T Lin, W Q Wang, X Zhou, C Z Wang, M Huang, S X Cai, P Chen, Q C Lin, J Y Zhou, Y H Gu, Y D Yuan, D J Sun, X H Yang, L Yang, J M Huo, Z C Chen, P Jiang, J Zhang, X W Ye, H G Liu, H P Tang, R Y Liu, C T Liu, W Zhang, C P Hu, Y Q Chen, X J Liu, L M Dai, W Zhou, Y J Huang, J Y Xu
Objective: To investigate warning symptoms of asthma attack and evaluate asthma self-management status of asthma patients in urban China. Methods: A multi-center, cross-sectional, questionnaire-based survey was carried out from 30 general hospitals dispersed in 30 provinces of mainland China (except for Tibet) during Oct 2015 to May 2016. Information of frequency and warning symptoms of asthma attack, the time from warning symptoms to asthma attack, the impact of asthma attack and asthma self-management were collected from asthma patients of outpatient department...
August 8, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28822231/preoperative-halo-gravity-traction-for-severe-thoracic-kyphoscoliosis-patients-from-tibet-radiographic-correction-pulmonary-function-improvement-nursing-and-complications
#18
Xiaojin Li, Liwen Zeng, Xiaoyin Li, Xuexia Chen, Caixia Ke
BACKGROUND This study investigated the outcomes of preoperative HGT as an adjunct treatment for severe thoracic kyphoscoliosis, its role in radiographic correction, and pulmonary function improvement, together with nursing strategy and incidence of complications. MATERIAL AND METHODS Eleven patients with a mean age of 18.8 years were retrospectively reviewed. Inclusion criteria were: patients with severe kyphoscoliosis (coronal Cobb angle and kyphosis angle ≥80°); duration of HGT ≥8 weeks; patients undergoing HGT for at least 12 h per day; traction weight no less than 40% of body weight; and patients not receiving physical therapies...
August 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28809943/genetic-evidence-for-subspecies-differentiation-of-the-himalayan-marmot-marmota-himalayana-in-the-qinghai-tibet-plateau
#19
Jingyan Yan, Hongjian Chen, Gonghua Lin, Qian Li, Jiarui Chen, Wen Qin, Jianping Su, Tongzuo Zhang
The primary host of plague in the Qinghai-Tibet Plateau (QTP), China, is Marmota himalayana, which plays an essential role in the maintenance, transmission, and prevalence of plague. To achieve a more clear insight into the differentiation of M. himalayana, complete cytochrome b (cyt b) gene and 11 microsatellite loci were analyzed for a total of 423 individuals from 43 localities in the northeast of the QTP. Phylogenetic analyses with maximum likelihood and Bayesian inference methods showed that all derived haplotypes diverged into two primary well-supported monophyletic lineages, I and II, which corresponded to the referential sequences of two recognized subspecies, M...
2017: PloS One
https://www.readbyqxmd.com/read/28804492/population-genetic-differentiation-and-taxonomy-of-three-closely-related-species-of-saxifraga-saxifragaceae-from-southern-tibet-and-the-hengduan-mountains
#20
Qing-Bo Gao, Yan Li, Zhuo-Ma Gengji, Richard J Gornall, Jiu-Li Wang, Hai-Rui Liu, Liu-Kun Jia, Shi-Long Chen
The effects of rapid, recent uplift of the Hengduan Mountains on evolution and diversification of young floristic lineages still remain unclear. Here, we investigate diversification of three closely related Saxifraga species with a distribution restricted to the Hengduan Mountains (HM) and southern Tibet, and comment on their taxonomy based on molecular evidence. Three chloroplast DNA fragments (rbcL, trnL-F, trnS-G) and the nuclear ribosomal DNA internal transcribed spacer (ITS) were employed to study genetic structure across 104 individuals from 12 populations of Saxifraga umbellulata, S...
2017: Frontiers in Plant Science
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