74 results on '"Qiaoling Yu"'
Search Results
2. Deterministic Processes Shape Abundant and Rare Bacterial Communities in Drinking Water
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Binghua Han, Qiaoling Yu, Wanghong Su, Jiawei Yang, Shiheng Zhang, Xiaoshan Li, and Huan Li
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General Medicine ,Applied Microbiology and Biotechnology ,Microbiology - Published
- 2023
3. Putative Role of CFSH in the Eyestalk-AG-Testicular Endocrine Axis of the Swimming Crab Portunus trituberculatus
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Mengen Wang, Rui Xu, Shisheng Tu, Qiaoling Yu, Xi Xie, and Dongfa Zhu
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CFSH ,General Veterinary ,crustaceans ,sex differentiation ,Animal Science and Zoology ,Portunus trituberculatus ,endocrine axis - Abstract
It has been shown in recent studies that the crustacean female sex hormone (CFSH) plays a crucial role in the development of secondary sexual characteristics in Decapoda crustaceans. However, research on the function of CFSH in the eyestalk-AG-testicular endocrine axis has been inadequate. We cloned and identified a homolog of CFSH, PtCFSH, in this study. RT-PCR showed that PtCFSH was mainly expressed in the eyestalk. A long-term injection of dsPtCFSH and recombinant PtCFSH (rPtCFSH) in vivo showed opposite effects on spermatogenesis-related gene expression and histological features in the testis of P. trituberculatus, and was accompanied by changes in AG morphological characteristics and PtIAG expression. In addition, the phosphorylated-MAPK levels and the expression of several IIS pathway genes in the testis was changed accordingly in two treatments, suggesting that PtCFSH may regulate the testicular development via IAG. The hypothesis was further validated by a mixed injection of both dsPtCFSH and dsPtIAG in vivo. The following in vitro studies confirmed the negatively effects of PtCFSH on AG, and revealed that the PtCFSH can also act directly on the testis. Treatment with rPtCFSH reduced the cAMP and cGMP levels as well as the nitric oxide synthetase activity. These findings provide vital clues to the mechanisms of CFSH action in both the eyestalk-AG-testis endocrinal axis and its direct effects on the testis.
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- 2023
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4. Advances in Research on Natural Distribution, Biosynthesis, Detection, Bioactivity, and Application of Lutein
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Zilong Zhao, FangFang Ci, He Pang, Qiaoling Yu, Riyue Dong, and Aijia Xing
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Plant Science ,Agricultural and Biological Sciences (miscellaneous) ,Agronomy and Crop Science ,Food Science - Published
- 2022
5. Precipitation weakens the gravesoil fungal richness and species interactions in the Qinghai-Tibet Plateau
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Binghua Han, Qiaoling Yu, Qian Han, Sijie Wang, Wanghong Su, Jiapeng Qu, and Huan Li
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Ecology ,Soil Science ,Agricultural and Biological Sciences (miscellaneous) - Published
- 2023
6. Carcass Decay of Wild Mammals Increases the Carbon Storage and Temporal Turnover of Gravesoil Carbon-Fixing Microbes in Alpine Meadow
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Xiaochen Wang, Qian Han, Qiaoling Yu, Sijie Wang, Jiawei Yang, Wanghong Su, Ruijun Wan-Yan, Xiaofang Sun, and Huan Li
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- 2023
7. Synthesis, modification, and adsorption properties of Yb‐MOF: Kinetic and thermodynamic studies
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Lili Yin, Qinsong Deng, Zhilin Ke, Qiaoling Yu, Yu Xiao, and Shuhua Zhang
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Inorganic Chemistry ,General Chemistry - Published
- 2022
8. Two community types occur in gut microbiota of large‐sample wild plateau pikas ( Ochotona curzoniae )
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Qiaoling Yu, Huan Li, and Guoliang Li
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geography ,Plateau ,geography.geographical_feature_category ,Bacteria ,biology ,Phylogenetic tree ,Firmicutes ,Ochotona curzoniae ,Zoology ,Bacteroidetes ,Animals, Wild ,Lagomorpha ,Gut flora ,biology.organism_classification ,Gastrointestinal Microbiome ,Microbial population biology ,Animals ,Animal Science and Zoology ,Pika ,Ecosystem ,Phylogeny - Abstract
Studies on large-sample gut microbial sequencing data indicate that gut microbiota can be divided into multiple community types; different community types may influence the community function and ecosystem service. However, the knowledge on the classification, diversity, interaction, and assembling of microbial community types in the gut of wild animals is still insufficient. Here, we used pika gut microbiota data as an example to study the microbial community types in large-sample sequencing dataset. Cecal microbial communities from 118 wild plateau pika (Ochotona curzoniae) individuals at 5 elevational regions on the Qinghai-Tibet Plateau were analyzed. Our results show that pika gut microbiota can be separated into 2 community types (Cluster I and Cluster II). Cluster I was mainly distributed on the high-elevation regions with more than 3694 m and was most dominated by Firmicutes. Cluster II was from the low-elevation areas (lower than 3580 m), and was predominated by Bacteroidetes. Cluster I had a higher community alpha-diversity and predicted functional diversity than Cluster II, and the beta-diversity and predicted functional profiles of these 2 clusters were significantly different. Network analysis revealed that there were more complex interactions between Cluster I, which had enhanced influence on the co-occurrences of other microbes in the bacterial community when compared to Cluster II. Phylogenetic analysis found that the environmental filtering in the Cluster I was stronger than Cluster II. The assemblages of pika gut bacterial communities were determined mainly by deterministic processes, while the relative importance of deterministic processes accounted for more percentages in the Cluster I than Cluster II. Our results demonstrated that 2 gut microbial community types in pikas had distinct diversity patterns and ecological functions. Current methods are also helpful for identifying gut community types and the related mechanisms behind gut microbiota types in large-sample sequencing data of wild animals.
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- 2021
9. Multi-omics methods reveal that putrescine and cadaverine cause different degrees of enrichment of high-risk resistomes and opportunistic pathogens in the water and sediment of the Yellow River
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Wanghong Su, Xiaocheng Wang, Jiawei Yang, Qiaoling Yu, Xiaoshan Li, Shiheng Zhang, and Huan Li
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Biochemistry ,General Environmental Science - Abstract
Contamination of antibiotic resistomes due to animal carcass decay has become a serious environmental concern. However, the relationship between main metabolite compounds of corpse decomposition (i.e., putrescine and cadaverine) and antibiotic resistomes remains unclear. To tackle this issue, the response of antibiotic resistance genes (ARGs) and microbiome in aquatic environment to excess putrescine, cadaverine and a mixture of both based on laboratory simulation experiment was investigated by high-throughput quantitative PCR and amplicon sequencing methods. Our results showed putrescine and cadaverine led to the increasing of TC (total carbon) and TN (total nitrogen) both in water and sediment. Under the exposure of putrescine and cadaverine, the total abundance of mobile genetic elements (MGEs) and most ARGs in water was higher than in sediment. In particular, putrescine and cadaverine caused significantly different decreases in alpha diversity of microbial community in water and sediment compared with the control group. Microbial community structures both in water and sediment were also significantly affected by cadaverine and putrescine. Furthermore, putrescine and cadaverine led to different degrees of increases of high-risk ARGs (like mecA) and opportunistic pathogens (like Delftia) in sediment, promoting the prevalence of antibiotic resistant bacteria. In conclusion, our findings revealed the influences of main metabolites of carcass decay on microbiome and resistomes, providing references for risk assessment and pollution management.
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- 2022
10. Metagenomics reveals the response of antibiotic resistance genes to elevated temperature in the Yellow River
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Qiaoling Yu, Qian Han, Shunqin Shi, Xiaofang Sun, Xiaochen Wang, Sijie Wang, Jiawei Yang, Wanghong Su, Zhibiao Nan, and Huan Li
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Environmental Engineering ,Genes, Bacterial ,Environmental Chemistry ,Humans ,Water ,Drug Resistance, Microbial ,Metagenomics ,Pollution ,Waste Management and Disposal ,Anti-Bacterial Agents - Abstract
Climate warming may aggravate the threat of antibiotic resistance genes (ARGs) to environmental and human health. However, whether temperature can predict ARGs and influence their assembly processes remains unknown. Here, we used metagenomic sequencing to explore how gradually elevated water temperature (23 °C, 26 °C, 29 °C, 32 °C, 35 °C) influences ARG and mobile genetic element (MGE) profiles in the Yellow River. In total, 30 ARG types including 679 subtypes were detected in our water samples. Gradually increased temperature remarkably reduced ARG diversity but increased ARG abundance. Approximately 37 % of ARGs and 42 % of MGEs were predicted by temperature, while most others were not sensitive to temperature. For each 1 °C increase in temperature, the ARG abundance rose by 2133 TPM (Transcripts Per kilobase of exon model per Million mapped reads) abundance, and multidrug, tetracycline and peptide resistance genes had the fastest increases. Proteobacteria and Actinobacteria were the primary ARG hosts, with 558 and 226 ARG subtypes, respectively. Although ARG profiles were mainly governed by stochastic process, elevated temperature increased the deterministic process of ARGs in the Yellow River. The abundance of five high-risk ARGs (tetM, mecA, bacA, vatE and tetW) significantly increased with elevated water temperature, and these ARGs co-occurred with several opportunistic pathogens (Delftia, Legionella and Pseudomonas), implying that antibiotic resistance risk may increase under climate warming. Our study explored the possibility of predicting resistomes and their health risks through temperature, providing a novel approach to predict and control ARGs in water environments under climate warming.
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- 2022
11. Distribution and influencing factors of antibiotic resistance genes of crayfish (Procambarus clarkii) intestine in main crayfish breeding provinces in China
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Ruijun Wanyan, Meijing Pan, Zhan Mai, Xiong Xiong, Wanghong Su, Jiawei Yang, Qiaoling Yu, Xiaochen Wang, Qian Han, Huan Li, Guitang Wang, and Shangong Wu
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China ,Environmental Engineering ,Drug Resistance, Microbial ,Astacoidea ,Breeding ,Pollution ,Anti-Bacterial Agents ,Intestines ,Genes, Bacterial ,RNA, Ribosomal, 16S ,Environmental Chemistry ,Animals ,Humans ,Waste Management and Disposal - Abstract
The propagation of antibiotic resistance genes (ARGs) has become a global public health concern. However, the distribution and influencing factors of ARGs, especially high-risk ARGs, in the gut of aquaculture animals remain unclear. Here, we employed 16S rRNA gene sequencing and high-throughput quantitative PCR techniques to determine crayfish gut microbiota and ARGs collected from 40 culture ponds in major crayfish farming provinces of China. We detected 74 ARGs in crayfish gut. Among them, the beta-lactamase and tetracycline resistance genes were dominant. The total ARG abundance was the highest in Hubei Province. High-risk ARGs were also found in crayfish gut, and ermB had the highest abundance and distributed in Anhui, Hubei, Henan and Jiangxi Province. In addition, opportunistic pathogens (Streptococcus, Aeromonas and Acinetobacter) might be potential hosts for ARGs, including high-risk ARGs. Finally, habitat, environmental factors (NO
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- 2022
12. Metagenomics reveals elevated temperature causes nitrogen accumulation mainly by inhibiting nitrate reduction process in polluted water
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Jiawei Yang, Qiaoling Yu, Wanghong Su, Sijie Wang, Xiaochen Wang, Qian Han, Jiapeng Qu, and Huan Li
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Environmental Engineering ,Environmental Chemistry ,Pollution ,Waste Management and Disposal - Published
- 2023
13. Mammalian carcass decay increases carbon storage and temporal turnover of carbon-fixing microbes in alpine meadow soil
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Xiaochen Wang, Qian Han, Qiaoling Yu, Sijie Wang, Jiawei Yang, Wanghong Su, Ruijun Wan-Yan, Xiaofang Sun, and Huan Li
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Biochemistry ,General Environmental Science - Published
- 2023
14. Nationality and body location alter human skin microbiome
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Yijie Wang, Qiaoling Yu, Mian Gul Hilal, Rui Zhou, Huan Li, and Tianshu Feng
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China ,Bacteria ,integumentary system ,Microbiota ,Zoology ,Human skin ,Pathogenic bacteria ,General Medicine ,Chryseobacterium ,Biology ,biology.organism_classification ,medicine.disease_cause ,Applied Microbiology and Biotechnology ,Chinese people ,RNA, Ribosomal, 16S ,Lactobacillus ,Ethnicity ,medicine ,Humans ,Microbiome ,Proteobacteria ,Skin ,Biotechnology - Abstract
Skin microbiomes function directly in human health and are affected by various external and internal factors. However, few studies have showed the variation of human skin microbiota at multiple body sites in individuals of different national origin living in the same environment. Here, using 16S rRNA sequencing, we investigated the diversity and function of skin microbiomes in different body locations of Chinese and Pakistani individuals from a single college in China. Body location and nationality significantly affected community structures, while season and gender only impacted community member. Due to different lifestyles and likely genetic characteristics of the hosts, Proteobacteria was more abundant in Pakistanis than in Chinese individuals. There were significant differences in the Shannon diversity of skin microorganisms among different skin sites of Chinese individuals, but not in Pakistanis. PICRUSt prediction indicated that gene functions involved in carbohydrate metabolism, lipid metabolism, and xenobiotics biodegradation and metabolism were higher in bacteria collected from Pakistanis than those from Chinese individuals, but the amino acid metabolism of skin microorganisms in Chinese people was higher. The relative abundances of potential pathogenic bacteria also differed in different body locations, providing a foundation for studying skin-associated bacterial diseases. Through a meta-analysis of 233 human skin samples from eight elevational sites in western China, we found that skin microbial diversity first decreased and then increased with increasing altitude. Network analysis showed positive correlation between altitude and Lactobacillus, Chryseobacterium, or Acinetobacter. Our results uncover the variation of human skin microbiota allowing future explorations of potential significance for human health. KEY POINTS: • Body location and nationality affect skin microbiota diversity and function. • Proteobacteria was more abundant in Pakistanis than in Chinese. • Skin microbial diversity first decreased and then increased with elevated altitude.
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- 2021
15. Animal Activities of the Key Herbivore Plateau Pika (
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Jiawei, Yang, Sijie, Wang, Wanghong, Su, Qiaoling, Yu, Xiaochen, Wang, Qian, Han, Yuting, Zheng, Jiapeng, Qu, Xiangzhen, Li, and Huan, Li
- Abstract
Plateau pikas (
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- 2022
16. Corpse decay of wild animals leads to the divergent succession of nrfA-type microbial communities
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Wanghong Su, Sijie Wang, Jiawei Yang, Qiaoling Yu, Stephan Wirth, Xiaodan Huang, Wanpeng Qi, Xiao Zhang, and Huan Li
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Soil ,Microbiota ,Ammonium Compounds ,Cadaver ,Animals ,Animals, Wild ,General Medicine ,Applied Microbiology and Biotechnology ,Soil Microbiology ,Biotechnology - Abstract
Animal carcasses introduce large amounts of nitrates and ammonium into the soil ecosystem. Some of this ammonium is transformed from nitrite through the nrfA-type microbial community. However, it is unclear how nrfA-type microorganisms respond to the decomposition of corpses. This study applied high-throughput sequencing to characterize the ecological succession of nrfA-type microbial communities in grassland soil. Our results showed that Cyclobacterium and Trueperella were the predominant genera for nrfA-type communities in soil with a decomposing corpse (experimental group), while Cyclobacterium and Archangium were dominant in soil without a corpse (control group). The alpha diversity indexes and the resistance and resilience indexes of the microbial communities initially increased and then decreased during decomposition. Compared with the control group, nrfA-encoding community structure in the experimental group gradually became divergent with succession and temporal turnover accelerated. Network analysis revealed that the microbial communities of the experimental group had more complex interactions than those of the control groups. Moreover, the bacterial community assembly in the experimental group was governed by stochastic processes, and the communities of the experimental group had a weaker dispersal capacity than those of the control group. Our results reveal the succession patterns of the nrfA-type microbial communities during degradation of wild animal corpses, which can offer references for demonstrating the ecological mechanism underlying the changes in the nrfA-type microbial community during carcass decay. KEY POINTS: • Corpse decay accelerates the temporal turnover of the nrfA-type community in soil. • Corpse decay changes the ecological succession of the nrfA-type community in soil. • Corpse decay leads to a complex co-occurrence pattern of the nrfA-type community in soil.
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- 2022
17. Corpse decomposition of freshwater economic fish leads to similar resistomes and the enrichment of high-risk antibiotic resistance genes in different water types
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Xiaochen Wang, Ruijun Wan-Yan, Jiawei Yang, Wanghong Su, Qiaoling Yu, Sijie Wang, Qian Han, Xiangzhen Li, and Huan Li
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Sulfonamides ,Environmental Engineering ,Fishes ,Water ,Drug Resistance, Microbial ,Fresh Water ,General Medicine ,Management, Monitoring, Policy and Law ,Tetracycline ,Anti-Bacterial Agents ,Genes, Bacterial ,Cadaver ,Animals ,Humans ,Waste Management and Disposal - Abstract
Animal carcass decay produces many poisonous metabolites and chemical pollutants, which pose potential ecological risks to the aquatic environment and human health. However, the effects of animal cadaver decomposition on high-risk antibiotic resistance genes (ARGs) and potential pathogens in different water types are still unknown. In this study, fifteen freshwater economic fish (Carassius auratus) corpses were put into three types of water (i.e., pond water, tap water, and domestic sewage) for a 100-day decomposition. Next generation sequencing and HT-qPCR were used to illustrate how corpse decomposition affected microbial communities and ARG profiles. Our results revealed that fish corpse degradation caused similar resistomes and microbiome in different water types. MLSB (Macrolide-Lincosamide-Streptogramin B), β-lactamase, sulfonamide, tetracycline resistance genes and transposase genes in the experimental groups were increased. Among them, tetracycline resistance genes were enriched by 224 to 136,218-fold during the process of corpse degradation. Furthermore, high-risk ARGs (ermB, floR and dfrA1), which resist to MLSB, multidrug and sulfonamide respectively, were significantly enriched in the cadaver groups and had co-occurrence patterns with opportunistic pathogens, such as Bacteroidetes, which was more than 37 times in carcass groups than that in control groups. The study is able to draw a general conclusion that cadaver decomposition of freshwater economic fish deteriorates the aquatic environment by affecting high-risk ARGs and pathogenic microorganisms regardless of water types, which poses potential threats to human health. Therefore, timely management and treatment of animal carcasses is of great significance to the protection of water environment.
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- 2022
18. Microbiota and mobile genetic elements influence antibiotic resistance genes in dust from dense urban public places
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Tianshu Feng, Qian Han, Wanghong Su, Qiaoling Yu, Jiawei Yang, and Huan Li
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Interspersed Repetitive Sequences ,Genes, Bacterial ,Health, Toxicology and Mutagenesis ,Microbiota ,Humans ,Drug Resistance, Microbial ,Dust ,General Medicine ,Tetracycline ,Toxicology ,Pollution ,Anti-Bacterial Agents - Abstract
Many contaminants were carried by dust, a common environment media that is easy to contact with human beings, and antibiotic resistance genes (ARGs) as an emergency pollutant also harbor in dust and pose serious threats to human health especially those carried by opportunistic pathogens because inactivation of antibiotics caused by ARGs may enhance pathogenicity. Considering there is a gap of investigation of dust ARGs, 16 S rRNA gene sequences and high-throughput quantitative PCR were employed to obtain information of microbial communities and accumulated ARGs in dust from different urban places, including the malls, hospitals, schools and parks, to investigate the distribution and influencing factors of ARGs and discover the potential hosts of ARGs in dust. Here, 9 types of ARGs such as sulfonamide, tetracycline, and beta-lactamase and 71 subtypes of ARGs like sul1, tetM-01, and drfA1 were detected in dust. ARGs had varying distribution in different public places and seasons in dust. The abundances of total ARGs, MLSB and tetracycline genes were higher in spring than summer. The diversity of ARGs was highest in malls, follow by hospitals, schools, and parks. Additionally, multi-drug resistance genes in dust were more abundant in hospitals than in schools and parks. The microbes were distinguished as the most important driving factors for ARGs in dust, followed by the mobile genetic elements (MGEs) and different places, while dust physicochemical parameters only exert a negligible impact. Notably, several opportunistic pathogens like the Streptococcus, Vibrio, and Pseudomonas were inferred as potential hosts of high-risk ARGs such as mecA, tetM-02, and tetO-01 in dust because of strongly positive co-occurrence. These results imply that dust is likely an important reservoir of ARGs. We should realize that ARGs may be harbored in some opportunistic pathogens occur in dust and endanger human health because of dust contacting to human easily.
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- 2022
19. Insight into the dynamics of drinking water resistome in China
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Mian Gul Hilal, Binghua Han, Qiaoling Yu, Tianshu Feng, Wanghong Su, Xiangkai Li, and Huan Li
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Health, Toxicology and Mutagenesis ,General Medicine ,Toxicology ,Pollution - Published
- 2023
20. Heavy rainfall accelerates the temporal turnover but decreases the deterministic processes of buried gravesoil bacterial communities
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Wanghong Su, Qian Han, Jiawei Yang, Qiaoling Yu, Sijie Wang, Xiaochen Wang, Jiapeng Qu, and Huan Li
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Soil ,Environmental Engineering ,Bacteria ,Microbiota ,Cadaver ,Environmental Chemistry ,Humans ,Pollution ,Waste Management and Disposal ,Soil Microbiology - Abstract
The influences of global climatic change require an understanding of changes in soil microbial communities under precipitation. However, little is known about how soil ("gravesoil") microbial communities associated with corpse decay respond to precipitation. Here, we explored the variations of temporal turnover and assembly in gravesoil bacterial communities in the Qinghai-Tibet Plateau ecosystem via controlled rainfall simulation experiments. In our experiments, rainfall intensity was set to 2.5 and 5 mm/3 days to simulate moderate and heavy rainfall, respectively, and sampling was conducted on the 4th, 11th, 18th, 32nd, 46th and 60th day. Our results showed precipitation significantly altered bacterial abundances and community structures. Analysis of time-decay relationships revealed that precipitation resulted in a divergent succession of gravesoil bacterial community structure and abundance changes of dominant phyla, such as Chloroflexi. Moreover, in the experimental groups, our results suggested that moderate rainfall increased the deterministic processes in the initial and mid periods, whereas heavy rainfall decreased these processes of gravesoil microbial community assembly in every period compared with those in the control group. The dispersal capacity induced by stochastic processes of gravesoil microbial communities decreased over time under moderate rainfall, whereas it initially increased and then decreased under heavy rainfall. This study highlights the influence of heavy rainfall on bacterial communities during corpse decay, which can provide some inferences for predicting changes in soil microbial communities under global climatic change.
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- 2022
21. Metagenomics reveals that temperature predicts a small proportion of antibiotic resistomes and mobile genetic elements in polluted water
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Jiawei, Yang, Qiaoling, Yu, Wanghong, Su, Sijie, Wang, Xiaochen, Wang, Qian, Han, and Huan, Li
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Health, Toxicology and Mutagenesis ,General Medicine ,Toxicology ,Pollution - Abstract
Climate warming multiplies the threat of antibiotic resistance genes (ARGs) to public health, but whether temperature may predict antibiotic resistomes in water environment remain unknown. Here, by metagenomic sequencing, we investigated the changes of resistome at five different temperature gradients (23, 26, 29, 32, and 35 °C) in polluted water by animal cadaver. Thirty ARG types including 668 subtypes were observed in our samples. Temperature significantly influenced ARG profiles and showed a negative correlation with ARG diversity. The ARG assembly process was dominated by a deterministic process (63.32%-95.08%) but showed a peak pattern with temperature. Notably, temperature may predict approximately 21% of ARGs and 36% of mobile genetic elements (MGEs), while most other ARGs or MGEs were insensitive to temperature. Three types (carbapenem, dicyclomycin, and diaminopyrimidine antibiotic) and 63 subtypes of ARGs that positively correlated with temperature were identified in the polluted water. Notably, we screened 21 subtypes of high-risk ARGs (bacA, mdtA, tetM, etc.) and 22 opportunistic pathogens (Aeromonas, Clostridium, Bacteroides, etc.) and found their positive co-occurrence with temperature, implying these potential biological or genetic pollutants may probably go up under global warming. Our study reveals the predictability of temperature on antibiotic resistance genes, providing a suitable approach to track the fate and spread of ARGs in water environment under climate warming.
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- 2023
22. Successions of rare and abundant microbial subcommunities during fish carcass decomposition in a microcosm under the influence of variable factors
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Mian G Hilal, Rui Zhou, Qiaoling Yu, Yijie Wang, Tianshu Feng, Xiangkai Li, and Huan Li
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Microbiota ,RNA, Ribosomal, 16S ,Proteobacteria ,Genetics ,Fishes ,Animals ,Firmicutes ,Water ,Cyanobacteria ,Molecular Biology ,Microbiology ,Acidobacteria - Abstract
Animal carcasses are hotspots of ecological activity. The study of the role of microbes in carcass decomposition has been exclusively focused on microbes with higher abundance. The comparative study of abundant and rare subcommunities associated with decomposition needs in-depth exploration. The current experiment has been conducted on the decomposition of a fish carcass in a microcosm. We conducted 16S rRNA gene sequencing of the microbial communities. The correlation of the physicochemical properties of tap and Yellow river water with the microbial communities was evaluated. Proteobacteria, Bacteroidetes, Firmicutes, and Actinobacteria were found to be the dominant phyla in both abundant and rare subcommunities. Among bacteria, the Acidobacteria, Planctomycetes, and Cyanobacteria were found only in the rare subcommunity. In both subcommunities, the abundance of Proteobacteria was found to increase over time, and that of Firmicutes to decrease. The rare subcommunity shows higher alpha diversity than the abundant one. The variation in the abundant subcommunity was influenced by time and water type, and that in the rare subcommunity was influenced by pH and water type. These results have implications for future research on the ecological role of rare and abundant subcommunities in the decomposition of carcasses in the aquatic ecosystem.
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- 2021
23. miR‑638 suppresses proliferation by negatively regulating high mobility group A1 in ovarian cancer cells
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Yaofeng Jin, Xiaomei Bai, Wei Zhang, Li Ma, and Qiaoling Yu
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Cancer Research ,endocrine system diseases ,Oncogene ,proliferation ,high mobility group A1 ,Cell ,apoptosis ,Cancer ,Articles ,General Medicine ,Cell cycle ,Biology ,medicine.disease_cause ,medicine.disease ,female genital diseases and pregnancy complications ,microRNA-638 ,ovarian cancer ,medicine.anatomical_structure ,Immunology and Microbiology (miscellaneous) ,microRNA ,medicine ,Cancer research ,Viability assay ,Carcinogenesis ,Ovarian cancer - Abstract
Ovarian cancer is one of the most common gynecological diseases with high mortality rates. Previous studies have shown that microRNA (miR)-638 is associated with tumorigenesis. The present study aimed to assess the role and underlying mechanisms of miR-638 in ovarian cancer. miR-638 expression was detected in ovarian cancer tissues and miR-638 was overexpressed or knocked down in ovarian cancer OVCAR-3 and Caov-3 cells. The clinical results revealed that miR-638 expression was downregulated in ovarian cancer tissues compared with in adjacent normal tissues. miR-638 expression was also found to be relatively low in OVCAR-3 cells whilst being relatively high in Caov-3 cells among the five ovarian cancer cell lines tested. miR-638 overexpression inhibited cell viability, arrested the cell cycle at the G1 phase and promoted apoptosis in OVCAR-3 cells. By contrast, miR-638 knockdown increased Caov-3 cell viability, facilitated cell cycle progression and inhibited apoptosis. miR-638 reduced the expression of high mobility group A1 (HMGA1) by directly targeting its 3' untranslated region. HMGA1 overexpression reversed the inhibition of proliferation induced by miR-638 overexpression in OVCAR-3 cells. These results suggest that miR-638 may serve to be a suppressor of ovarian cancer by regulating HMGA1, which may provide a potential therapeutic target for ovarian cancer.
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- 2021
24. A Pan-cancer Analysis of Molecular Characteristics and Oncogenic Role of Gasdermins
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mingchao Mu, Junhui Yu, Jing Guo, Qiaoling Yu, Xuejun Sun, Qin Zhang, and Xingjie Wang
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Cancer Research ,Oncology ,Pan cancer ,Genetics ,Cancer research ,Biology - Abstract
Background The gasdermins (GSDMs) family is proposed to be pore-forming effector proteins that cause cell membrane permeabilization and pyroptosis. Despite our increasing knowledge of GSDMD, GSDME and GSDMB, the biological functions and the regulation of GSDM expression and activation remain elusive for most GSDMs. In this study, we analyzed the molecular characteristics and oncogenic role of GSDM family genes systematically. Methods TCGA, CCLE, cBioPortal, GEPIA, CellMiner and BioGRID databases were utilized in this study. Immunohistochemical analysis and a series of in vitro experiments were conducted. Results We found that, in cancer, GSDM genes and their expressions extensively changed, which were associated with patient survival. The expression of GSDMs was widely associated with cancer-related pathways, drug resistance, immune subtypes, tumor microenvironment and cancer cell stemness. However, an intra- and inter-cancer heterogeneity was discovered regarding the corresponding GSDM gene. We found that GSDMA and GSDMB regulated drug resistance to the opposite direction of GSDME. In colorectal cancer, GSDME might be a positive regulator in cell invasion and metastasis through cell migration and angiogenesis, while GSDMA, GSDMB and GSDMD might be a negatively regulator of cell migration. Conclusions GSDM family genes might play important roles in cancer other than pyroptosis. We suggest more efforts be made to investigate the GSDM family and each GSDM gene be studied as an entity in each type of cancer.
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- 2021
25. Epithelial-mesenchymal Transition of Peritoneal Mesothelial Cells Is Enhanced by M2c Macrophage Polarization
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Jin Han, Lei Zhang, Jiamei Lu, Li Wang, Qiaoling Yu, Xiaoqin Ma, Dan Liu, Lingting Wei, Fumeng Huang, Lifang Tian, Zhao Chen, Jie Gao, Yuzhan Zhang, and Rongguo Fu
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Epithelial-Mesenchymal Transition ,Chemistry ,Macrophages ,Immunology ,Macrophage polarization ,Peritoneal Fibrosis ,General Medicine ,Molecular biology ,Gene expression ,CCL17 ,Macrophage ,Humans ,Epithelial–mesenchymal transition ,CXCL13 ,Peritoneum ,Mesothelial Cell ,Signal Transduction - Abstract
BACKGROUND Peritoneal fibrosis (PF) can reduce the efficiency of peritoneal dialysis and eventually lead to ultrafiltration failure. Epithelial-mesenchymal transition (EMT) of peritoneal mesothelial cells (PMCs) is the start of PF. Macrophages are involved in the process. This study was to investigate the effect of macrophage polarization on EMT of PMCs. METHODS Monocyte-macrophage cells (THP-1) were treated to induce macrophage subsets (M1, M2a, M2c). The inducing was assessed by detecting protein and mRNA expression of cytokines using ELISA and RT-PCR. Subsequently, PMCs were co-cultured with M1, M2a and M2c, respectively, in Transwell chambers for 48 h and then expressions of E-cadherin and α-SMA were determined in PMCs. The PMCs that were not co-cultured with macrophages served as control PMCs. One-way ANOVA and SNK-q test were used to conduct statistics and P
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- 2021
26. Corpse Degradation of Farmed Fish Increases the Abundance of Antibiotic Resistance Genes but Exhibits the Temporal Stability
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Tianshu Feng, Xiangzhen Li, Qiaoling Yu, Huan Li, Tongtong Li, Wanghong Su, and Jiawei Yang
- Subjects
Abundance (ecology) ,Fish farming ,Zoology ,Degradation (geology) ,Biology ,Antibiotic resistance genes - Abstract
Serious concerns have been raised regarding resistomes causing by corpse decomposition in the aquatic environment, which pose threats to the water environment and human health. However, antibiotic resistance genes (ARGs) in large-volume tap water and their temporal stability during corpse decay are poorly explored. Here, high-throughput quantitative polymerase chain reaction (HT-qPCR) and amplicon sequencing were applied to profile ARGs and bacterial communities in experimental and control groups containing 50 L of tap water at 7th, 15th and 100th day during corpse decomposition. We found that most of the ARGs in experimental groups had higher abundance compared with the control groups independent of time. And the absolute abundance of some ARGs in the carcass groups was even enriched by 259 to 413,640-folds. The tetracycline and beta-lactamase resistance genes of the experimental groups were obviously enriched compared with control groups, and the ARG profiles were convergent during different decay stages, which indicated the long-term persistence of ARGs. Treatment, dissolved oxygen (DO) and pH were three important factors determining ARG profiles during corpse decomposition. Twelve opportunistic pathogens, especially Burkholderia, Legionella and Halomonas, remarkably increased as decomposition proceeded. Network analysis showed that opportunistic pathogens were significantly associated with ARGs. Our results emphasize that corpse decay increases the abundance and diversity of ARGs in large-volume drinking water independent of time while exhibits temporal persistence of ARGs, thereby uncovering the harmful effects of animal cadavers. It also provides valuable suggestions for the risk assessment and management of source water caused by corpse decay.
- Published
- 2021
27. Differences in Gut Microbiome Composition and Antibiotic Resistance Gene Distribution between Chinese and Pakistani University Students from a Common Peer Group
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Qiaoling Yu, Mian Gul Hilal, Huan Li, Jiapeng Qu, Tianshu Feng, Rui Zhou, and Yijie Wang
- Subjects
0301 basic medicine ,Microbiology (medical) ,Firmicutes ,QH301-705.5 ,030106 microbiology ,Gut flora ,human health ,Microbiology ,Article ,03 medical and health sciences ,Virology ,Prevotella ,Microbiome ,Biology (General) ,Genetics ,biology ,gut microbiota ,Phylum ,biology.organism_classification ,stabilization ,antibiotic resistance genes (ARGs) ,030104 developmental biology ,Dialister ,Bacteroides ,Proteobacteria ,nationalities - Abstract
Gut microbiomes play important functional roles in human health and are also affected by many factors. However, few studies concentrate on gut microbiomes under exercise intervention. Additionally, antibiotic resistance genes (ARGs) carried by gut microbiomes may constantly pose a threat to human health. Here, ARGs and microbiomes of Chinese and Pakistanis participants were investigated using 16S rRNA gene sequencing and high-throughput quantitative PCR techniques. The exercise had no impact on gut microbiomes in the 12 individuals investigated during the observation period, while the different distribution of gut microbiomes was found in distinct nationalities. Overall, the dominant microbial phyla in the participants’ gut were Bacteroidota, Firmicutes and Proteobacteria. Some genera such as Prevotella and Dialister were more abundant in Pakistani participants and some other genera such as Bacteroides and Faecalibacterium were more abundant in Chinese participants. The microbial diversity in Chinese was higher than that in Pakistanis. Furthermore, microbial community structures were also different between Chinese and Pakistanis. For ARGs, the distribution of all detected ARGs is not distinct at each time point. Among these ARGs, floR was distributed differently in Chinese and Pakistani participants, and some ARGs such as tetQ and sul2 are positively correlated with several dominant microbiomes, particularly Bacteroidota and Firmicutes bacteria that did not fluctuate over time.
- Published
- 2021
28. The long-term decomposition of wild animal corpses leads to carbon and phosphorus accumulation and disturbs the ecological succession of the denitrification community encoded by narG
- Author
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Jiawei Yang, Wanghong Su, Qiaoling Yu, Zunji Shi, Xiaodan Huang, Petr Heděnec, Huakun Zhou, Jiapeng Qu, and Huan Li
- Subjects
Ecology ,Soil Science ,Agricultural and Biological Sciences (miscellaneous) - Published
- 2022
29. Water volume influences antibiotic resistomes and microbiomes during fish corpse decomposition
- Author
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Rui Zhou, Qiaoling Yu, Tianshu Feng, Jiawei Yang, Wanghong Su, Huan Li, Tongtong Li, and Xiangzhen Li
- Subjects
Conservation of Natural Resources ,Environmental Engineering ,010504 meteorology & atmospheric sciences ,Tetracycline ,010501 environmental sciences ,medicine.disease_cause ,01 natural sciences ,RNA, Ribosomal, 16S ,Water environment ,medicine ,Cadaver ,Environmental Chemistry ,Animals ,Humans ,Food science ,Microbiome ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Total organic carbon ,Comamonas ,biology ,Microbiota ,Water ,Pathogenic bacteria ,biology.organism_classification ,16S ribosomal RNA ,Pollution ,Anti-Bacterial Agents ,Environmental Policy ,Genes, Bacterial ,Bacteroides ,medicine.drug - Abstract
Corpse decomposition may cause serious pollution (e.g., releasing antibiotic resistance genes) to the water environment, thereby threatening public health. However, whether antibiotic resistance genes (ARGs) and microbiomes are affected by different water volumes during carcass decomposition remains unknown. Here, we investigated the effects of large/small water volumes on microbial communities and ARGs during fish cadaver decomposition by 16S rRNA high-throughput sequencing and high-throughput quantitative PCR. The results showed that the large water volume almost eliminated the effects of corpse decomposition on pH, total organic carbon (TOC), and total nitrogen (TN). When the water volume enlarged by 62.5 fold, the relative abundances of some ARGs resisting tetracycline and sulfonamide during carcass decomposition decreased by 217 fold on average, while there was also a mean 5267 fold increase of vancomycin resistance genes. Compared with the control group, the enriched types of ARGs varied between the large and small volume. Water volume, mobile genetic elements, and carcass decomposition were the most important factors affecting ARG profiles. Many opportunistic pathogens (like Bacteroides and Comamonas) were enriched in the corpse group. Bacteroides and Comamonas may be potential hosts of ARGs, indicating the potential for the spread of ARGs to humans by water pathogenic bacteria. This research highlights that the "dilution effect" can contribute to eliminating this adverse effect during corpse decomposition to a certain extent. It may provide references for environmental governance and public health.
- Published
- 2021
30. Exploring microbial communities, assessment methodologies and applications of animal's carcass decomposition: a review
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Rui Zhou, Yijie Wang, Tianshu Feng, Mian Gul Hilal, Huan Li, Xiangkai Li, and Qiaoling Yu
- Subjects
0301 basic medicine ,Insecta ,animal diseases ,Microorganism ,Ecological succession ,Biology ,Applied Microbiology and Biotechnology ,Microbiology ,Decomposer ,03 medical and health sciences ,fluids and secretions ,0302 clinical medicine ,Nutrient ,Animals ,Ecosystem ,030216 legal & forensic medicine ,Microbiome ,Ecology ,Bacteria ,Microbiota ,digestive, oral, and skin physiology ,technology, industry, and agriculture ,Fungi ,food and beverages ,Nutrients ,Decomposition ,030104 developmental biology - Abstract
Animals are an essential part of the ecosystem, and their carcasses are the nutrient patches or hotspots where nutrients accumulate for a long time. After death, the physical and chemical properties undergo alterations inside the carcass. The animal carcass is decomposed by many decomposers such as bacteria, fungi, microeukaryotes and insects. The role of microbial symbionts in living organisms is well explored and studied, but there is a scarcity of knowledge and research related to their role in decomposing animal carcasses. Microbes play an important role in carcass decomposition. The origins of microbial communities associated with a carcass, including the internal and external microbiome, are discussed in this review. The succession and methods used for the detection and exploration of decomposition-associated microbial communities have been briefly described. Also, the applications of carcass-associated microbial taxa have been outlined. This review is intended to understand the dynamics of microbial communities associated with the carcass and pave the way to estimate postmortem interval and its role in recycling nutrients.
- Published
- 2021
31. Animal corpse degradation enriches antibiotic resistance genes but remains recalcitrant in drinking water microcosm
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Wanghong Su, Tongtong Li, Qiaoling Yu, Tianshu Feng, Jiawei Yang, Jiapeng Qu, Xiangzhen Li, and Huan Li
- Subjects
Biomaterials ,Waste Management and Disposal ,Microbiology - Published
- 2022
32. Heavy metals and microbiome are negligible drivers than mobile genetic elements in determining particle-attached and free-living resistomes in the Yellow River
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Qiaoling Yu, Huan Li, Wanghong Su, Jiawei Yang, Tongtong Li, and Tianshu Feng
- Subjects
Pollutant ,Environmental Engineering ,biology ,Ecology ,Microbiota ,Health, Toxicology and Mutagenesis ,Microorganism ,Aquatic ecosystem ,biology.organism_classification ,Pollution ,Anti-Bacterial Agents ,Interspersed Repetitive Sequences ,Rivers ,Genes, Bacterial ,Abundance (ecology) ,Metals, Heavy ,RNA, Ribosomal, 16S ,Humans ,Environmental Chemistry ,Microbiome ,Mobile genetic elements ,Waste Management and Disposal ,Relative species abundance ,Bacteria - Abstract
Suspended particles in water can shelter both microorganisms and contaminants. However, the emerging pollutants antibiotic resistance genes (ARGs) in free-living (FL) or particle-attached (PA) bacteria in aquatic environments are less explored. In this study, we compared the free-living and particle-attached ARGs during four seasons in the Yellow River using high-throughput quantitative PCR techniques and 16S rRNA gene sequencing. Our results demonstrated that both the free-living water and particles were dominated by tetracycline and beta-lactamase resistance genes. The PA-ARGs had a higher absolute abundance than FL-ARGs in the Yellow River, regardless of the season. Both PA-ARGs and FL-ARGs had the highest absolute abundance and diversity during winter. Mobile genetic elements (MGEs) were the dominant driver for both size-fractionated ARGs. However, the microbiome had less influence on PA-ARG profiles than the FL-ARG profiles, while the effects of the heavy metals on ARGs were negligible. The community assembly of both FL-ARG and PA-ARG can be explained by neutral processes. Several opportunistic pathogens (e.g., Escherichia coli) associated with human health exhibited a higher relative abundance in the particles than during a free-living lifestyle. Parts of these pathogens were potential ARG hosts. As such, it is important to monitor the ARGs and opportunistic pathogens from size-fractionated bacteria and develop targeted strategies to manage ARG dissemination and opportunistic pathogens to ensure public health.
- Published
- 2022
33. Rumen Microbiome and Metabolome of Tibetan Sheep (Ovis aries) Reflect Animal Age and Nutritional Requirement
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Huan Li, Qiaoling Yu, Tongtong Li, Liye Shao, Ming Su, Huakun Zhou, and Jiapeng Qu
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Firmicutes ,Metabolite ,Population ,Rumen ,chemistry.chemical_compound ,Metabolomics ,Metabolome ,Microbiome ,Food science ,education ,Ovis ,Original Research ,education.field_of_study ,lcsh:Veterinary medicine ,rumen microbiome ,biology ,General Veterinary ,food and beverages ,biology.organism_classification ,SCFA ,metabolomics ,essential amino acids ,chemistry ,age ,lcsh:SF600-1100 ,Veterinary Science - Abstract
The rumen microbiota plays an important role in animal functional attributes. These microbes are indispensable for the normal physiological development of the rumen, and may also convert the plant polysaccharides from grass into available milk and meat, making it highly valuable to humans. Exploring the microbial composition and metabolites of rumen across developmental stages is important for understanding ruminant nutrition and metabolism. However, relatively few reports have investigated the microbiome and metabolites across developmental stages in ruminants. Using 16S rRNA gene sequnecing, metabolomics and high-performance liquid chromatography techniques, we compared the rumen microbiota, metabolites and short chain fatty acids (SCFAs) between lambs and sub-adult Tibetan sheep (Ovis aries) from Qinghai-Tibetan Plateau. Bacteroidetes and Spirochaetae were enriched in sub-adult sheep, while Firmicutes and Tenericutes were more abundant in young individuals. The sub-adult individuals had higher alpha diversity values than those in young sheep. Metabolomics analysis showed that the content of essential amino acids and related gene functional pathways in rumen were different between the lambs and sub-adult population. L-Leucine that participates in valine, leucine and isoleucine biosynthesis was more abundant in the lambs, while phenylethylamine that takes part in phenylalanine metabolism was more enriched in the sub-adults. Both rumen microbial community structures and metabolite profiles were impacted by age, but rumen SCFA concentration was relatively stable between different age stages. Some specific microbes (e.g., Clostridium and Ruminococcaceae) were positively associated with L-Leucine but negatively correlated with phenylethylamine, implying that rumen microbes may play different roles for metabolite production at different ages. Mantel test analysis showed that rumen microbiota was significantly correlated with metabolomics and SCFA profiles. Our results indicates the close relationship between microbial composition and metabolites, and also reveal different nutritional requirement for different ages in ruminants, thus having important significance for regulating animal nutrition and metabolism by microbiome intervention.
- Published
- 2020
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34. Gut microbiome adaptation to extreme cold winter in wild plateau pika (Ochotona curzoniae) on the Qinghai-Tibet Plateau
- Author
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Qiaoling Yu, Tianshu Feng, Huan Li, Rui Zhou, and Yijie Wang
- Subjects
China ,Ochotona curzoniae ,Zoology ,Gut flora ,Tibet ,Microbiology ,03 medical and health sciences ,Genetics ,Animals ,Microbiome ,Pika ,Molecular Biology ,Extreme Cold ,Ecosystem ,030304 developmental biology ,0303 health sciences ,biology ,030306 microbiology ,Lagomorpha ,biology.organism_classification ,Adaptation, Physiological ,Gastrointestinal Microbiome ,Cold Temperature ,Microbial population biology ,Metagenomics ,Seasons ,Host adaptation - Abstract
The Qinghai-Tibet Plateau is a harsh environment characterized by low temperature, high altitude and hypoxia, although some native mammals may adapt well to the extreme climate. However, how animal gut microbial community structure and function adapt to extreme cold climates is not well understood. Plateau pika (Ochotona curzoniae) is an ideal animal model with which to study the effects of climate change on host adaptation by studing intestinal microorganisms. Here, we used 16S rRNA sequencing technology combined with physiological methods to investigate plateau pika gut microbiota in summer and winter. Due to limited diet resources, the pikas in winter have a lower ability of degradation and fermentation for plant-based food (reduced cellulase activity and total short-chain fatty acids) by decreasing gut microbial diversity and some functional microbes, such as fiber-degrading bacteria Oscillospira and Treponema. Metagenomic prediction showed that most of those gene functions associated with metabolism (e.g. energy metabolism and lipid metabolism) were less abundant in winter, implying that the plateau pika slows diet fermentation and weakens energy requirements in the cold season. Our results have significance for explaining the mechanism of wild plateau mammals adapting to a high-altitude cold environment from the perspective of gut microbiome.
- Published
- 2020
35. Temporal succession of water microbiomes and resistomes during carcass decomposition in a fish model
- Author
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Rui Zhou, Mian Gul Hilal, Huan Li, Qiaoling Yu, Tianshu Feng, and Yijie Wang
- Subjects
Veterinary medicine ,Environmental Engineering ,Firmicutes ,Health, Toxicology and Mutagenesis ,0211 other engineering and technologies ,Environmental pollution ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Tap water ,Water environment ,Cadaver ,Environmental Chemistry ,Animals ,Humans ,Water pollution ,Waste Management and Disposal ,0105 earth and related environmental sciences ,021110 strategic, defence & security studies ,biology ,Microbiota ,Bacteroidetes ,Water ,Drug Resistance, Microbial ,biology.organism_classification ,Pollution ,Anti-Bacterial Agents ,Genes, Bacterial ,Nutrient pollution ,Water quality - Abstract
Carcass decomposition in water may cause serious environmental pollution, which poses a great threat to water quality and public health. However, water microbial community succession and antibiotic resistance genes (ARGs) during carcass decomposition process are less explored. Using high-throughput sequencing and high-throughput quantitative PCR techniques, the temporal succession of water bacterial communities and ARGs profiles in experimental groups (fish carcasses) and control groups (no carcasses) containing two different types of water (the Yellow River water and tap water) in different successional stages were studied. Our results showed that NH3-N concentration in the corpse groups has greatly risen and exceeded more than 28 times on average over the safety thresholds of water quality. Some potential pathogenic genera Comamonas, Bacteroides and Pseudomonas significantly increased during carcass decomposition process. The bacterial communities of the Yellow River water and tap water in the experimental groups exhibited similar succession patterns, and community dissimilarities between the two groups decreased and smaller over time, indicating that bacterial community convergence. NH3-N, NO3-N and time were three most important factors in determining bacteria community structures. The influence of water type on corpse bacterial community structures was significant but weak. The gene copy number of seven detected ARGs (cmlA1-01, floR, sul1, sul2, tetG-01, tetM-01 and tetQ) in the experimental groups was more abundant than that in the control groups. The ARGs concentrations in the corpse groups were even enriched 19-fold (minimum) to 148-fold (maximum) compared to the gene tetQ of the Yellow River water in the control groups on the initial stage. Redundancy analysis (RDA) indicated that Bacteroidetes and Firmicutes were significantly correlated with all detected ARGs. This study emphasizes that cadaver degradation leads to the deterioration of nitrogen pollution, the abundance increase of potential pathogens, and the transfer of ARGs from dead animals to water environment, thereby uncovering the harmful effects of related water pollution for human health.
- Published
- 2020
36. Ultrasound enhanced biosynthesis of L-theanine from L-glutamine and ethylamine by recombinant γ-glutamyltranspeptidase
- Author
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Fangkai Han, Qiaoling Yu, Lisheng Xu, and Xingtao Zhang
- Subjects
0106 biological sciences ,Environmental Engineering ,Glutamine ,Mutant ,Bioengineering ,010501 environmental sciences ,01 natural sciences ,law.invention ,chemistry.chemical_compound ,Biosynthesis ,Glutamates ,law ,010608 biotechnology ,Ethylamines ,Thermal stability ,Waste Management and Disposal ,0105 earth and related environmental sciences ,chemistry.chemical_classification ,Renewable Energy, Sustainability and the Environment ,Substrate (chemistry) ,General Medicine ,gamma-Glutamyltransferase ,Enzyme ,chemistry ,Yield (chemistry) ,Recombinant DNA ,Ethylamine ,Nuclear chemistry - Abstract
A mutant library of the key amino acid residue site E387 in γ-glutamyltranspeptidase was constructed to screen the mutant enzymes with significantly improved thermal stability (E387Q). The reaction temperature of the mutant enzyme (E387Q) was 10℃ higher than that of the parent enzyme. Ultrasound-assisted synthesis of L-theanine by γ-glutamyltranspeptidase was investigated. The effects of ultrasonic power, reaction pH and substrate concentration on the enzymatic synthesis of L-theanine were studied by the response surface method. The results showed that the optimal process conditions are ultrasonic power of 100 W, reaction pH of 9, substrate L-glutamine concentration of 120 mmol/L, reaction temperature of 45℃, and L-theanine yield of 89.1%. The yield of L-theanine is 2.61 times higher than that obtained without ultrasound. Ultrasound can significantly promote the synthesis of L-theanine by γ-glutamyltranspeptidase.
- Published
- 2020
37. Seasonal distribution of antibiotic resistance genes in the Yellow River water and tap water, and their potential transmission from water to human
- Author
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Wanghong Su, Yijie Wang, Qiaoling Yu, Jiawei Yang, Rui Zhou, Tianshu Feng, Huan Li, and Hong Zhang
- Subjects
Total organic carbon ,China ,Veterinary medicine ,Health, Toxicology and Mutagenesis ,Water Pollution ,Pseudomonas ,Drug Resistance, Microbial ,General Medicine ,Biology ,Toxicology ,biology.organism_classification ,Pollution ,law.invention ,Biosafety ,Transmission (mechanics) ,Rivers ,Aeromonas ,Tap water ,Genes, Bacterial ,law ,RNA, Ribosomal, 16S ,Humans ,Water treatment ,Seasons ,Water quality - Abstract
The prevalence and transmission of antibiotic resistance genes (ARGs) and opportunistic pathogens in water environments can pose great threat to public health. However, the dissemination of ARGs and opportunistic pathogens from water environments to humans has been poorly explored. Here, we employed 16S rRNA gene sequencing and high-throughput quantitative PCR techniques to explore the seasonal distribution of ARGs and opportunistic pathogens in the Yellow River water (source water) and tap water, as well as their relationships with healthy humans at Lanzhou, China. Physiochemical analysis was applied to detect water quality parameters and heavy metal contents. The absolute abundance and diversity of ARGs in the Yellow River and tap water demonstrated distinct seasonal patterns. In winter, the Yellow river water had the highest ARG abundance and diversity, while tap water owned the lowest. Mobile genetic elements (MGEs) were the predominant driver of ARG profiles in both the Yellow river and tap water. Null model analysis showed that ARG assembly in the Yellow River was more influenced by stochastic processes than tap water and this was independent of seasons. Total organic carbon and arsenic contents exhibited positive correlations with many ARGs. Opportunistic pathogens Aeromonas and Pseudomonas may be potential hosts for ARGs. Approximately 80% of detected ARGs were shared between water samples and the human gut. These persistent ARGs could not be entirely eliminated through drinking water treatment processes. Thus, it is crucial to protect sources of tap water from anthropogenic pollution and improve water treatment technologies to reduce the dissemination of ARGs and ensure drinking-water biosafety for human health.
- Published
- 2022
38. Multichannel-Structured Three-Dimensional Chip for Highly Sensitive Pathogenic Bacteria Detection Based on Fast DNA-Programmed Signal Polymerization
- Author
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Xiaqing Wang, Zhijun Huang, Qiaoling Yu, Zewei Luo, Ya Xu, Yixiang Duan, Yongxin Li, and Junman Chen
- Subjects
DNA, Bacterial ,Staphylococcus aureus ,Fluorophore ,02 engineering and technology ,01 natural sciences ,Signal ,Analytical Chemistry ,chemistry.chemical_compound ,Polymethyl Methacrylate ,Detection theory ,Oligonucleotide Array Sequence Analysis ,business.industry ,010401 analytical chemistry ,Nucleic Acid Hybridization ,Salmonella enterica ,Three-dimensional integrated circuit ,021001 nanoscience & nanotechnology ,Chip ,Fluorescence ,0104 chemical sciences ,chemistry ,Polymerization ,Optoelectronics ,Electrophoresis, Polyacrylamide Gel ,0210 nano-technology ,business ,human activities ,Biosensor - Abstract
The threat of food safety and the limited analytical methods with high performance promote the growing interest in the development of pathogenic bacteria biosensors. This study presents a pathogenic bacteria biosensing system, where a novel three-dimensional (3D) chip acts as an analytical carrier and DNA-programmed hybridization chain reaction (HCR) causes signal amplification. The 3D chip is designed featuring a compact multichannel structure. It has a large surface area for sensitive sensing and exhibits multiple functions of target capture, separation, rinsing, and signal detection to simplify the analysis processes. HCR, which enables the fluorophore's polymerization, is designed as two signal amplification modes, each with unique advantages. Mode I achieves highly sensitive detection in a "sandwich" assay format, in which a long HCR-amplified probe is used to boost the fluorescence signal. In mode II, the assembly of HCR is performed on the inner surface of the 3D chip. Especially, a group of rapid-assembly HCR sequences is proposed, of which the assembly time as short as 15 min stands out among the related works previously reported. Under the optimal conditions, the proposed biosensing system has the limits of detection (LOD) of 4 and 8 cfu/mL in mode I for Staphylococcus aureus detection and in mode II for Salmonella enterica Typhimurium detection, respectively. The specificity and the real sample applications are evaluated. This multichannel-structured 3D chip based on HCR signal amplification has potential applications in food safety monitoring and biosensor development.
- Published
- 2018
39. Elevation is Associated with Human Skin Microbiomes
- Author
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Tingbei Bo, Jiapeng Qu, Huan Li, Yijie Wang, Liye Shao, Tianshu Feng, Huakun Zhou, Nan Li, Rui Zhou, and Qiaoling Yu
- Subjects
Microbiology (medical) ,0303 health sciences ,integumentary system ,030306 microbiology ,elevation ,Beta diversity ,Elevation ,deterministic processe ,Zoology ,Human skin ,Biology ,Microbiology ,Article ,diversity ,03 medical and health sciences ,Human health ,Microbial population biology ,Virology ,network ,Skin microbiome ,Alpha diversity ,Microbiome ,Ultraviolet radiation ,030304 developmental biology - Abstract
Human skin microbiota plays a crucial role in the defense against pathogens, and is associated with various skin diseases. High elevation is positively correlated with various extreme environmental conditions (i.e., high ultraviolet radiation), which may exert selection pressure on skin microbiota, and therefore influence human health. Most studies regarding skin microbial communities have focused on low-elevation hosts. Few studies have explored skin microbiota in high-elevation humans. Here, we investigated the diversity, function, assembly, and co-occurrence patterns of skin microbiotas from 35 health human subjects across three body sites (forehead, opisthenar, and palm) and seven elevation gradients from 501 to 3431 m. Alpha diversity values (i.e., Shannon diversity and observed operational taxonomic units (OTUs)) decreased with increasing elevation regardless of the body site, while beta diversity (Jaccard and Bray&ndash, Curtis dissimilarities) showed an increasing trend with elevation. Elevation is a significant factor that influences human skin microbiota, even after controlling host-related factors. Skin microbiotas at high elevation with more than 3000 m on the Qinghai&ndash, Tibet Plateau, had a significant structural or functional separation from those at low elevation with less than 3000 m. Notably, the clustering coefficient, average degree, and network density were all lower at high-elevation than those at low-elevation, suggesting that high-elevation skin networks were more fragile and less connected. Phylogenetic analysis showed that human skin microbiotas are mainly dominated by stochastic processes (58.4%&ndash, 74.6%), but skin microbiotas at high-elevation harbor a greater portion of deterministic processes than those at low-elevation, indicating that high-elevation may be conducive to the promotion of deterministic processes. Our results reveal that the filtering and selection of the changeable high-elevation environment on the Qinghai&ndash, Tibet Plateau may lead to less stable skin microbial community structures.
- Published
- 2019
40. Rs1520220 and Rs2195239 Polymorphisms of IGF-1 Gene Associated with Histopathological Grades in IgA Nephropathy in Northwestern Chinese Han Population
- Author
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Li Wang, Linting Wei, Tian Tian, Tianbo Jin, Rongguo Fu, Dan Niu, Zhijun Dai, Jie Gao, Qiaoling Yu, Xinghan Liu, and Meng Wang
- Subjects
0301 basic medicine ,China ,lcsh:Diseases of the circulatory (Cardiovascular) system ,medicine.medical_specialty ,Genotype ,Single-nucleotide polymorphism ,lcsh:RC870-923 ,urologic and male genital diseases ,Polymorphism, Single Nucleotide ,Single-nucleotide polymorphisms ,Gastroenterology ,Nephropathy ,03 medical and health sciences ,Internal medicine ,lcsh:Dermatology ,medicine ,Chi-square test ,Humans ,Genetic Predisposition to Disease ,Insulin-Like Growth Factor I ,Proteinuria ,business.industry ,Case-control study ,Glomerulonephritis, IGA ,IgA nephropathy ,General Medicine ,Odds ratio ,lcsh:RL1-803 ,lcsh:Diseases of the genitourinary system. Urology ,medicine.disease ,Confidence interval ,Insulin-like growth factor-1 ,030104 developmental biology ,Susceptibility ,lcsh:RC666-701 ,Nephrology ,Case-Control Studies ,Disease Progression ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background/Aims: Insulin-like growth factor-1 (IGF-1) plays important roles in cellular proliferation, differentiation, and growth. Previous studies showed that single-nucleotide polymorphisms (SNPs) of IGF-1 are associated with various diseases. This case-control study aimed to examine the relationship between IGF-1 polymorphisms and IgA nephropathy (IgAN) risk in a Chinese Han population. Methods: We recruited 351 IgAN patients and 310 healthy controls from Northwestern China. Sequenom MassARRAY was utilized to examine the genotypes of two common IGF-1 SNPs (rs1520220 and rs2195239). Odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated by the Chi square test to evaluate the associations between IGF-1 and IgAN. Results: Our study demonstrated that IGF-1 gene rs1520220 and rs2195239 polymorphisms did not confer susceptibility to IgAN. We found no correlation between gender, blood pressure, proteinuria, eGFR, and IgAN in both SNPs. However, the rs1520220 and rs2195239 variants were correlated with M1 and E1 in patients with IgAN (M0/M1: CC vs. CG+GG: OR = 1.62, P = 0.04; E0/E1: CC vs. CG+GG: OR = 1.95, P = 0.004; GG vs. GC+CC: OR = 1.90, P = 0.004, respectively). Conclusion: These results indicate that IGF-1 gene polymorphisms play crucial roles in the histopathological progression of IgAN in the Chinese Han population.
- Published
- 2018
41. Corpse decomposition increases the diversity and abundance of antibiotic resistance genes in different soil types in a fish model
- Author
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Rui Zhou, Jianxiao Zhu, Jiawei Yang, Qiaoling Yu, Wanghong Su, Yijie Wang, Huan Li, and Tianshu Feng
- Subjects
010504 meteorology & atmospheric sciences ,Health, Toxicology and Mutagenesis ,Zoology ,Environmental pollution ,010501 environmental sciences ,Biology ,Toxicology ,01 natural sciences ,Soil ,Abundance (ecology) ,Cadaver ,Animals ,Humans ,Microbiome ,Soil Microbiology ,0105 earth and related environmental sciences ,Drug Resistance, Microbial ,Soil classification ,General Medicine ,Pollution ,Anti-Bacterial Agents ,Multiple drug resistance ,Microbial population biology ,Genes, Bacterial ,Alpha diversity ,Mobile genetic elements - Abstract
As a common natural phenomenon, corpse decomposition may lead to serious environmental pollution such as nitrogen pollution. However, less is known about antibiotic resistance genes (ARGs), an emerging contaminant, during corpse degradation. Here, ARGs and microbiome in three soil types (black, red and yellow soil) have been investigated between experimental and control groups based on next-generation sequencing and high-throughput quantitative PCR techniques. We found that the absolute abundance of total ARGs and mobile genetic elements (MGEs) in the experimental groups were respectively enriched 536.96 and 240.60 times in different soil types, and the number of ARGs in experimental groups was 7-25 more than that in control groups. For experimental groups, the distribution of ARGs was distinct in different soil types, but sulfonamide resistance genes were always enriched. Corpse decomposition was a primary determinant for ARGs profiles. Microbiome, NH4+ concentrates and pH also significantly affected ARGs profiles. Nevertheless, soil types had few effects on ARGs. For soil microbiome, some genera were elevated in experimental groups such as the Ignatzschineria and Myroides. The alpha diversity is decreased in experimental groups and microbial community structures are different between treatments. Additionally, the Escherichia and Neisseria were potential pathogens elevated in experimental groups. Network analysis indicated that most of ARGs like sulfonamide and multidrug resistance genes presented strong positively correlations with NH4+ concentrates and pH, and some genera like Ignatzschineria and Dysgonomonas were positively correlated with several ARGs such as aminoglycoside and sulfonamide resistance genes. Our study reveals a law of ARGs' enrichment markedly during corpse decomposing in different soil types, and these ARGs contaminant maintaining in environment may pose a potential threat to environmental safety and human health.
- Published
- 2021
42. Carcass decay deteriorates water quality and modifies the nirS denitrifying communities in different degradation stages
- Author
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Yaqi Dou, Qiaoling Yu, Yijie Wang, Tianshu Feng, Jiawei Yang, Rui Zhou, Huan Li, and Wanghong Su
- Subjects
Environmental Engineering ,Denitrification ,010504 meteorology & atmospheric sciences ,Nitrogen ,010501 environmental sciences ,01 natural sciences ,chemistry.chemical_compound ,Denitrifying bacteria ,Nitrate ,Water Quality ,Cadaver ,Animals ,Environmental Chemistry ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Pollutant ,Bacteria ,biology ,Chemistry ,Total dissolved solids ,biology.organism_classification ,Pollution ,Salinity ,Environmental chemistry ,Water quality ,Proteobacteria - Abstract
Corpse degradation may release amounts of hazardous materials (e.g., cadaverine, putrescine and ammonia) into surrounding areas, which deteriorate environments and result in nitrogen contamination. Nitrate or nitrite can be reduced to nitrogen gas by denitrifying bacteria, thus alleviating nitrogen contamination and purifying aquatic environments. However, the reaction of nirS-encoding denitrifiers to carcass degradation is less studied. Therefore, water physiochemical analysis and high-throughput sequencing were applied to explore the successional pattern of nirS denitrifying communities in the Yellow River water and tap water during three stages of animal cadaver decay (submerged fresh, advanced floating decay as well as sunken remains) and relevant control group. Nitrate nitrogen (NO3-N) and ammonia nitrogen (NH4+-N) concentration in corpse groups were highly elevated compared with control groups. The dominant phylum for nirS denitrifying communities was Proteobacteria. Abundant denitrifying genera Paracoccus, Alicycliphilus and Diaphorobacter were detected, and these genera have been reported to participate in the degradation of organic pollutants. Particularly, nirS-type community structures were remarkably influenced by corpse decay and became similar with succession. Water total dissolved solids (TDS), salinity, conductivity (CON) and phosphate were primary impacting factors driving the community structures, but the effect of water type was almost negligible. Notably, denitrifying community assembly was dominated by deterministic processes rather than stochastic processes, and the relative importance of deterministic processes among most corpse groups was higher than that in control groups, indicating that environmental filtering regulates the denitrifying communities. Our results provide new insight into environmental purification for hazardous materials produced by corpse degradation, thereby providing valuable advice to environmental administration.
- Published
- 2021
43. Association of Interleukin-10 Polymorphisms (rs1800872, rs1800871, and rs1800896) with Predisposition to IgA Nephropathy in a Chinese Han Population: A Case-Control Study
- Author
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Jie, Gao, Linting, Wei, Rongguo, Fu, Jiali, Wei, Dan, Niu, Li, Wang, Heng, Ge, Qiaoling, Yu, Meng, Wang, Xinghan, Liu, and Wanggang, Zhang
- Subjects
Adult ,Male ,lcsh:Diseases of the circulatory (Cardiovascular) system ,Genotype ,urologic and male genital diseases ,lcsh:RC870-923 ,Polymorphism, Single Nucleotide ,Young Adult ,Asian People ,lcsh:Dermatology ,Humans ,Genetic Predisposition to Disease ,Glomerulonephritis, IGA ,Case-control study ,IgA nephropathy ,Middle Aged ,lcsh:RL1-803 ,lcsh:Diseases of the genitourinary system. Urology ,Interleukin-10 ,Proteinuria ,Haplotypes ,Susceptibility ,lcsh:RC666-701 ,Case-Control Studies ,IL-10 ,Female - Abstract
Background/Aims: IgA nephropathy (IgAN) is a common form of primary glomerulonephritis worldwide. Previous studies indicated that IL-10 single nucleotide polymorphisms (SNP) play an important role in IgAN pathogenesis, but the results were controversy. This study aimed to investigate the association between IL-10 SNPs (rs1800872, rs1800871, and rs1800896) with IgAN in a Chinese Han population. Methods: We conducted a case–control study that included 351 patients with IgAN and 310 age-, gender- and ethnicity-matched healthy controls. Three promoter SNPs (rs1800872, rs1800871, and rs1800896) of IL-10 were genotyped by Sequenom MassARRAY. Odds ratios (ORs) with 95% confidence intervals (CI) were used to assess the relationship with IgAN. Results: We found that the rs1800896 did not correlate with IgAN risk, whereas rs1800872 and rs1800871 were significantly associated with increased IgAN risk in all genetic models. The haplotype analysis indicated that the CCA haplotype was associated with increased IgAN risk (OR = 1.36; 95% CI = 1.05–1.75). Moreover, there were no associations between these SNPs and blood pressure or gender, whereas the rs1800896 variant was correlated with higher 24-hour urine protein in patients with IgAN. Conclusion: Taken together, these results suggest that IL-10 is a susceptibility gene in patients with IgAN.
- Published
- 2017
44. Association Between IFN-γ Gene Polymorphisms and IgA Nephropathy in a Chinese Han Population
- Author
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Ganglian Yao, Meng Wang, Tianbo Jin, Rongguo Fu, Li Wang, Dan Niu, Jie Gao, Xinghan Liu, Linting Wei, and Qiaoling Yu
- Subjects
0301 basic medicine ,endocrine system ,business.industry ,030232 urology & nephrology ,Case-control study ,General Medicine ,urologic and male genital diseases ,medicine.disease ,Nephropathy ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Chinese han population ,Nephrology ,Immunology ,Medicine ,Immunoglobulin A Nephropathy ,Cardiology and Cardiovascular Medicine ,business ,Gene - Abstract
Background/Aims: IFN-γ was reported to be involved in the development and progression of Immunoglobulin A nephropathy (IgAN), however, few studies have investigated the association between IFN-γ polymorphisms and IgAN. Therefore, we performed a case-control study to assess the association between IFN-γ polymorphisms and the risk of IgAN. Methods: Sequenom MassARRAY was used to genotype two SNPs (rs1861494 and rs2430561) in 351 patients with IgAN and 310 healthy controls. Associations were evaluated as odd ratios (OR) with 95% confidence intervals (CI). Results: No association was found between IFN-γ rs1861494 and IgAN risk or clinical parameters. For rs2430561, the AA genotype was more common in patients with IgAN, compared with controls (AT vs. AA: OR = 0.57, P = 0.035). IFN-γ-rs2430561 T allele may be a protective factor for IgAN susceptibility (T vs. A: OR = 0.59, P = 0.04). Subgroup analysis based on clinical features revealed no significant association between rs2430561 polymorphism and clinical data such as gender, 24-h urine protein, blood pressure, Oxford classifcation and estimated glomerular fltration rate. IgAN patients had a higher IFN-γ serum level than healthy controls and patients with rs1861494 AA genotype had a higher IFN-γ serum level compared with those with AG/GG genotypes. Conclusions: IFN-γ polymorphisms may be involved in the development and progression of IgAN.
- Published
- 2017
45. Association of Interleukin-10 Polymorphisms (rs1800872, rs1800871, and rs1800896) with Predisposition to IgA Nephropathy in a Chinese Han Population: A Case-Control Study
- Author
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Qiaoling Yu, Rongguo Fu, Jiali Wei, Linting Wei, Li Wang, Jie Gao, Dan Niu, Xinghan Liu, Meng Wang, Wanggang Zhang, and Heng Ge
- Subjects
0301 basic medicine ,business.industry ,030232 urology & nephrology ,Case-control study ,Glomerulonephritis ,General Medicine ,urologic and male genital diseases ,medicine.disease ,Nephropathy ,03 medical and health sciences ,Interleukin 10 ,030104 developmental biology ,0302 clinical medicine ,Chinese han population ,Nephrology ,Immunology ,Medicine ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background/Aims: IgA nephropathy (IgAN) is a common form of primary glomerulonephritis worldwide. Previous studies indicated that IL-10 single nucleotide polymorphisms (SNP) play an important role in IgAN pathogenesis, but the results were controversy. This study aimed to investigate the association between IL-10 SNPs (rs1800872, rs1800871, and rs1800896) with IgAN in a Chinese Han population. Methods: We conducted a case–control study that included 351 patients with IgAN and 310 age-, gender- and ethnicity-matched healthy controls. Three promoter SNPs (rs1800872, rs1800871, and rs1800896) of IL-10 were genotyped by Sequenom MassARRAY. Odds ratios (ORs) with 95% confidence intervals (CI) were used to assess the relationship with IgAN. Results: We found that the rs1800896 did not correlate with IgAN risk, whereas rs1800872 and rs1800871 were significantly associated with increased IgAN risk in all genetic models. The haplotype analysis indicated that the CCA haplotype was associated with increased IgAN risk (OR = 1.36; 95% CI = 1.05–1.75). Moreover, there were no associations between these SNPs and blood pressure or gender, whereas the rs1800896 variant was correlated with higher 24-hour urine protein in patients with IgAN. Conclusion: Taken together, these results suggest that IL-10 is a susceptibility gene in patients with IgAN.
- Published
- 2017
46. Genetic variants of MCP-1 and CCR2 genes and IgA nephropathy risk
- Author
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Meng Wang, Tian Tian, Heng Ge, Xinghan Liu, Qiaoling Yu, Li Wang, Tianbo Jin, Jie Gao, Rongguo Fu, Zhijun Dai, Dan Niu, Jiali Wei, and Linting Wei
- Subjects
Adult ,Male ,Nephrology ,medicine.medical_specialty ,CCR2 ,Receptors, CCR2 ,case-control study ,monocyte chemoattractant protein-1 ,030232 urology & nephrology ,Gastroenterology ,polymorphism ,Nephropathy ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Polymorphism (computer science) ,Internal medicine ,Genotype ,medicine ,Humans ,Genetic Predisposition to Disease ,Chemokine CCL2 ,risk ,business.industry ,Case-control study ,Genetic variants ,Genetic Variation ,Glomerulonephritis, IGA ,IgA nephropathy ,Odds ratio ,medicine.disease ,Oncology ,Case-Control Studies ,030220 oncology & carcinogenesis ,Immunology ,Female ,business ,Research Paper - Abstract
// Jie Gao 1, * , Xinghan Liu 2, * , Linting Wei 1, * , Dan Niu 3 , Jiali Wei 4 , Li Wang 1 , Heng Ge 1 , Meng Wang 2 , Qiaoling Yu 5 , Tianbo Jin 6 , Tian Tian 2 , Zhijun Dai 2 , Rongguo Fu 1 1 Department of Nephrology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China 2 Department of Oncology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China 3 Department of Nephrology, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China 4 Department of Nephrology, Hainan general hospital, Haikou 570311, China 5 Department of Pathology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China 6 National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University, Xi’an 710069, China * These authors have contributed equally to this work Correspondence to: Jie Gao, email: gxej_cn@sina.com Rongguo Fu, email: pipifu@126.com Keywords: monocyte chemoattractant protein-1, IgA nephropathy, polymorphism, risk, case-control study Received: September 16, 2016 Accepted: October 12, 2016 Published: October 24, 2016 ABSTRACT Monocyte chemoattractant protein-1 (MCP-1) and its receptor CCR2 stimulate inflammation response by activating and recruiting monocytes/macrophages. MCP-1 and CCR2 polymorphisms were reported to be associated with various diseases. To explore the relationship between MCP-1 and CCR2 polymorphisms and IgA nephropathy (IgAN), we conducted this case-control study by enrolling 351 IgAN patients and 310 health controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to evaluate potential associations of MCP-1 and CCR2 polymorphisms with susceptibility and clinical parameters of IgAN. No statistical differences between IgAN group and the control group in the MCP-1 -2518 and CCR2 +190 genotypic groups were observed ( P > 0.05). Individuals with MCP-1 -2518 GG genotypes had a higher blood pressure (GG vs. AA+AG: OR = 1.79, 95% CI = 1.07-2.99, P = 0.026) and Lee’s grade (GG vs. AA+AG: OR = 2.05, 95% CI = 1.19-3.54, P = 0.009; GG vs. AA: OR = 2.24, 95% CI = 1.19-4.20, P = 0.01), compared with patients with AA/AG genotypes. A significant association between CCR2 +190 polymorphism and Lee’s grades was observed (GA+AA vs. GG: OR = 2.66, 95% CI = 1.63-4.35, P < 0.001; GA vs. AA+GG: OR = 2.27, 95% CI = 1.39-3.70, P = 0.001). Our results indicated that MCP-1 and CCR2 polymorphisms may influence the progression of IgAN, but not increase/decrease its susceptibility.
- Published
- 2016
47. Temporal-resolved characterization of laser-induced plasma for spectrochemical analysis of gas shales
- Author
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Yixiang Duan, Yi He, Tao Xu, Yong Zhang, Qiaoling Yu, and Zhang Ming
- Subjects
Laser ablation ,Materials science ,Calibration curve ,Thermodynamic equilibrium ,020209 energy ,010401 analytical chemistry ,Analytical chemistry ,02 engineering and technology ,Plasma ,Laser ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Analytical Chemistry ,law.invention ,law ,0202 electrical engineering, electronic engineering, information engineering ,Plasma diagnostics ,Laser-induced breakdown spectroscopy ,Instrumentation ,Oil shale ,Spectroscopy - Abstract
Optical emission of laser ablation plasma on a shale target surface provides sensitive laser-induced breakdown spectrometry (LIBS) detection of major, minor or trace elements. An exploratory study for the characterization of the plasma induced on shale materials was carried out with the aim to trigger a crucial step towards the quantitative LIBS measurement. In this work, the experimental strategies that optimize the plasma generation on a pressed shale pellet surface are presented. The temporal evolution properties of the plasma induced by ns Nd:YAG laser pulse at the fundamental wavelength in air were investigated using time-resolved space-integrated optical emission spectroscopy. The electron density as well as the temperatures of the plasma were diagnosed as functions of the decay time for the bulk plasma analysis. In particular, the values of time-resolved atomic and ionic temperatures of shale elements, such as Fe, Mg, Ca, and Ti, were extracted from the well-known Boltzmann or Saha–Boltzmann plot method. Further comparison of these temperatures validated the local thermodynamic equilibrium (LTE) within specific interval of the delay time. In addition, the temporal behaviors of the signal-to-noise ratio of shale elements, including Si, Al, Fe, Ca, Mg, Ba, Li, Ti, K, Na, Sr, V, Cr, and Ni, revealed the coincidence of their maximum values with LIBS LTE condition in the time frame, providing practical implications for an optimized LIBS detection of shale elements. Analytical performance of LIBS was further evaluated with the linear calibration procedure for the most concerned trace elements of Sr, V, Cr, and Ni present in different shales. Their limits of detection obtained are elementally dependent and can be lower than tens of parts per million with the present LIBS experimental configurations. However, the occurrence of saturation effect for the calibration curve is still observable with the increasing trace element content, indicating that, due to the complex composition of shale materials, the omnipresent “matrix effect” is still a great challenging for the performance of quantitative LIBS measurement even in the framework of the LTE approach.
- Published
- 2016
48. Lack of Association Between Polymorphisms in AGT and ATR1 and IgA Nephropathy in a Chinese Population
- Author
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Fengming Dong, Jie Gao, Qiaoling Yu, Zhe Wang, Linting Wei, Pengtao Yang, Xinghan Liu, Zhijun Dai, Meng Wang, and Rongguo Fu
- Subjects
Adult ,Male ,China ,medicine.medical_specialty ,Angiotensinogen ,Single-nucleotide polymorphism ,urologic and male genital diseases ,Bioinformatics ,Polymorphism, Single Nucleotide ,Gastroenterology ,Receptor, Angiotensin, Type 1 ,Nephropathy ,Asian People ,Risk Factors ,Internal medicine ,Genotype ,medicine ,Humans ,Statistical analysis ,Immunoglobulin A Nephropathy ,Allele ,Genetics (clinical) ,Chinese population ,Angiotensin II receptor type 1 ,Models, Genetic ,business.industry ,Glomerulonephritis, IGA ,General Medicine ,Middle Aged ,medicine.disease ,Female ,business - Abstract
The mechanism of immunoglobulin A nephropathy (IgAN) remains unclear. Genetic factors may be associated with the risk of IgAN. This study aims to identify the possible association of M268T (rs699) in the Angiotensinogen (AGT) gene and A1166C (rs5186) in the Angiotensin II receptor type 1 (ATR1) gene with IgAN risk.Study subjects included 351 patients with IgAN and 310 controls from the Chinese population. The tag SNPs (tSNPs) were genotyped by Sequenom MassARRAY RS1000. Statistical analysis of the association between tSNPs and IgAN was performed using the χ(2) test and SNPStats software.The AGT (M268T) genotypes were distributed in IgAN as CC 61.9%, CT 34.8%, and TT 3.2%, while in controls CC 64.1%, CT 31.3%, and TT 4.6%. Distribution of ATR1 (A1166C) was AA 87.7%, CA 12.3%, and CC 0%, while in controls AA 87.2%, CA 12%, and CC 0.8%. We further analyzed tSNPs under different inheritance models and found that there were no significant differences in the genotypes and allele frequencies of rs699 and rs5186 between two groups (p 0.05). We also analyzed tSNPs based on the rate of pressure, proteinuria and Lee's classification, and no significant differences were found in the models (p 0.05).rs699 in the AGT gene and rs5186 in the ATR1 gene were not associated with the risk and clinical outcomes of IgAN.
- Published
- 2015
49. A train position based beam switching mechanism in high speed railway scenario
- Author
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Delin Cai, Peng Ma, Qiaoling Yu, Ting Zhou, Mingyang Zhang, and Chao Wang
- Subjects
business.industry ,Computer science ,Orthogonal frequency-division multiplexing ,Electrical engineering ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,020206 networking & telecommunications ,020302 automobile design & engineering ,02 engineering and technology ,Communications system ,Term (time) ,Mechanism (engineering) ,0203 mechanical engineering ,Gigabit ,Position (vector) ,Extremely high frequency ,0202 electrical engineering, electronic engineering, information engineering ,Wireless ,business - Abstract
According to the medium and long term development planning of railway networks, China will built “eight vertical and horizontal” high speed railway network during 13th five-year. With the rapid development of mobile smart terminals, the rail dedicated communication system using GSM-R system cannot satisfy the passengers' communication requirement. As high frequency communication has been considered in 3GPP new radio to achieve higher capacity, this paper studies the high-speed communication using 60GHz millimeter wave. In this paper, we propose a beam switching mechanism based on train position information in high speed railway scenario. The proposed mechanism can realize fast intra-TRP/inter-TRP beam switching and the simulation result demonstrates Gigabit data rate can be provided for passengers.
- Published
- 2017
50. The Endothelial Nitric Oxide Synthase Gene Polymorphism is Associated with the Susceptibility to Immunoglobulin a Nephropathy in Chinese Population
- Author
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Qiaoling Yu, Dan Niu, Cong Dai, Jiali Wei, Jie Gao, Xinghan Liu, Tian Tian, Linting Wei, Li Wang, Meng Wang, Yan Ou, Tianbo Jin, and Rongguo Fu
- Subjects
0301 basic medicine ,Male ,lcsh:Diseases of the circulatory (Cardiovascular) system ,030232 urology & nephrology ,lcsh:RC870-923 ,urologic and male genital diseases ,Single-nucleotide polymorphisms ,0302 clinical medicine ,Enos ,Genotype ,lcsh:Dermatology ,biology ,Nitric Oxide Synthase Type III ,IgA nephropathy ,General Medicine ,Middle Aged ,Rs1799983 ,Nephrology ,Female ,Cardiology and Cardiovascular Medicine ,Risk ,Adult ,medicine.medical_specialty ,Single-nucleotide polymorphism ,Polymorphism, Single Nucleotide ,03 medical and health sciences ,Young Adult ,Rs2070744 ,Asian People ,Internal medicine ,medicine ,Humans ,Genetic Predisposition to Disease ,business.industry ,Haplotype ,Case-control study ,Glomerulonephritis, IGA ,Odds ratio ,lcsh:RL1-803 ,lcsh:Diseases of the genitourinary system. Urology ,biology.organism_classification ,030104 developmental biology ,Endocrinology ,Haplotypes ,lcsh:RC666-701 ,Case-Control Studies ,Endothelial nitric oxide synthase ,Gene polymorphism ,business - Abstract
Background/Aims: Endothelial nitric oxide synthase (eNOS) is one of the most important enzymes for producting nitric oxide (NO), which regulate the function of many organs and cells. The single nucleotide polymorphisms (SNPs) of eNOS were found to be associated with many kidney diseases. However, it is lack of relevant studies to evaluate the associations between eNOS polymorphisms and immunoglobulin A nephropathy (IgAN). This case-control study aimed to evaluate the relationship between eNOS polymorphisms and IgAN. Methods: We recruited 351 IgAN patients and 310 age- and sex-matched healthy controls from Northwest China. Sequenom MassARRAY was used to detect the genotypes of two common eNOS SNPs (rs1799983 and rs2070744). Odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated by the Chi square test to evaluate the associations between eNOS and IgAN. Phase 2.1 was used to conduct haplotype analysis. Results: In the overall analysis, we found that the rs1799983 polymorphism was associated with a decreased risk of IgAN (G/T vs. G/G: OR=0.57, 95%CI=0.34–0.96; G/T+T/T vs. G/G: OR=0.52, 95%CI=0.31–0.86; G/T vs. G/G-T/T: OR=0.60, 95%CI=0.36–0.99; Log-additive model: OR=0.48, 95%CI=0.30–0.78). Haplotype analysis indicated that Trs1799983Crs2070744 is a protective factor against IgAN (OR=0.62, 95%CI=0.42––0.92). However, no significant differences were found between the two SNPs (rs1799983 and rs2070744) and clinical features (age, sex, blood pressure, and Lee’s grade) of IgAN. Conclusion: The eNOS gene rs1799983 polymorphism and Trs1799983Crs2070744 haplotype may reduce the risk of IgAN in Chinese populations.
- Published
- 2016
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