Publications by authors named "Wen-Qiang Tang"

3 Publications

  • Page 1 of 1

Genetic variation of Echinococcus spp. in yaks and sheep in the Tibet Autonomous Region of China based on mitochondrial DNA.

Parasit Vectors 2019 Dec 27;12(1):608. Epub 2019 Dec 27.

State Key Laboratory of Veterinary Etiological Biology/National Professional Laboratory of Animal Hydatidosis, Key Laboratory of Veterinary Parasitology of Gansu Province/Lanzhou Veterinary Research Institute, CAAS, Lanzhou, 730046, Gansu, People's Republic of China.

Background: Cystic echinococcosis (CE) in humans and livestock is caused by Echinococcus granulosus (sensu lato). In China where CE is endemic, a number of studies have shown that Echinococcus granulosus (sensu stricto) is majorly responsible for CE. However, E. canadensis (G6) which is the second leading cause of CE is now being detected in most parts of the country. In this study, the species diversity and genetic variation of Echinococcus granulosus (s.l.) in four counties in Tibet Autonomous Region of China were investigated.

Methods: Infection with Echinococcus granulosus (s.s.) in yaks and sheep was identified using NADH dehydrogenase subunit 1 and 5 (nad1 and nad5) mitochondrial genes while the genotype G6 of E. canadensis initially diagnosed with NADH dehydrogenase subunit 1 (nad1) was further confirmed by analysis of the complete mitochondrial genome and a phylogenetic network constructed based on the nad2 and nad5 genes.

Results: Out of 85 hydatid cyst samples collected from slaughtered sheep (n = 54) and yaks (n = 31), 83 were identified as E. granulosus (s.s.) G1 (n = 77), G3 (n = 6) and 2 were identified as E. canadensis G6. Analysis of the nad1/nad5 genes revealed 16/17 mutations with 9/14 parsimony informative sites resulting in 15/14 haplotypes, respectively. Haplotype diversity (Hd) and nucleotide diversity (π) of E. granulosus (s.s.) population were 0.650 and 0.00127 for nad1 and 0.782 and 0.00306 for nad5, respectively, with an overall negative Tajima's D and Fu's Fs. A low F indicated no genetic difference between isolates from sheep and yaks.

Conclusion: Pockets of infection with E. canadensis (G6, G7, G8 and G10) have been previously reported in sheep, goats, yaks and/or humans in different parts of China. While the G6 genotype has been previously reported in sheep in the Tibet Autonomous Region, the detection in a yak in the present study represents the first to the best of our knowledge. Therefore, we recommend future surveys and control efforts to comprehensively investigate other potential intermediate hosts for the prevalence and genetic diversity of the E. canadensis group (G6, G7, G8 and G10) across the country and their inclusion into the existing CE control programme.
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http://dx.doi.org/10.1186/s13071-019-3857-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6935104PMC
December 2019

Integrin alpha5beta1 suppresses rBMSCs anoikis and promotes nitric oxide production.

Biomed Pharmacother 2018 Mar 8;99:1-8. Epub 2018 Jan 8.

Department of Cardiology, Liaocheng People's Hospital and Clinical School of Taishan Medical University, Liaocheng, Shandong, 252000, China; School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia. Electronic address:

Background: Cell based therapy has been heralded as a novel, promising therapeutic strategy for cardiovascular diseases including pulmonary arterial hypertension (PAH). However, the low survival rate after transplantation due to cell death via anoikis is a major obstacle in stem cell therapy. Cells adhesion via Integrin alpha5beta1 (ITGA5B1) has a tendency to exert higher maximum forces. The present study aimed to evaluate the potential protective effect of ITGA5B1 on rat bone marrow mesenchymal stem cells (rBMSCs) from anoikis.

Methods: Mononuclear cells were isolated by density gradient centrifugation with Ficoll, and rBMSCs cell surface markers were evaluated by flow cytometry. Osteogenic and adipocyte differentiation was determined by Alizarin Red S and Oil Red O staining respectively. The expression of Integrin A5 (ITGA5), Integrin B1 (ITGB1), eNOS and actived-caspase-3 mRNA or protein was confirmed by qPCR and western-blot. Cell adhesion, cell viability, anoikis and the migration of rBMSCs were also evaluated. Nitric oxide (NO) production was detected by the greiss assay.

Results: Co-infected with Integrin A5 and B1 lentivirus to rBMSCs increased ITGA5 and ITGB1 mRNA and protein expression. ITGA5B1 enhanced the cell adhesion, cell viability, cell migration and NO production but reduced the cell anoikis in rBMSCs/ITGA5B1 groups.

Conclusion: Transduction of rat rBMSCs with ITGA5B1 lentivirus could prevent cell anoikis and increase NO production.
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http://dx.doi.org/10.1016/j.biopha.2018.01.038DOI Listing
March 2018

[Helminth Infections in Goats in Nimu County of Tibet].

Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2016 Feb;34(1):8-10

Postmortem examinations were made in 99 goats in Nimu County of Tibe, and parasites were collected and identified based on morphology. The collected parasites were categorized, and infection status was analyzed. The helminth infection rate was 100% among the goats, and all showed a pattern of mixed infection. The identified parasites belonged to 21 species, 15 genera, and 9 families. The Trichuris genus(36.4%) was the most prevailing among nematodes in the gastrointestinal tract; Paramphistomum cervi(60.6%) and Paramphistomum gotoi(60.6%) were predominant among trematodes detected; Cysticercus tenuicollis(52.5%) was the predominant cestode detected; and Orientobilharzia turkestanicum was the major parasite detected in the portal vein (69.7%).
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February 2016