9 results on '"Qianni Huang"'
Search Results
2. Trends and associated factors in the uptake of HIV testing among female sex workers in Sino-Vietnam border areas in Guangxi, China: a cross-sectional study
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Bingyu Liang, Qianni Huang, Yanyun Ou, Fei Zhang, Peidong Zhang, Aidan Nong, Shide Mo, Zhenxian Wu, Hai Xie, Huayue Liang, Jie Liu, Junjun Jiang, Hao Liang, Deping Liu, and Li Ye
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HIV ,AIDS ,Female sex worker ,Sino-Vietnam border ,HIV testing ,Migrant ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background HIV testing is a primary prevention strategy against the HIV epidemic and an entry point for HIV/AIDS-related care, prevention and treatment. This study aimed to estimate the uptake of HIV testing among Sino-Vietnam female sex workers (FSWs) in Guangxi, China, from 2016 to 2018, and to identify the factors influencing HIV testing uptake. Methods A cross-sectional survey was conducted among FSWs in two Sino-Vietnam border cities of Guangxi, China. The survey was conducted through face-to-face interview, the data were collected by a structured questionnaire, and HIV-1 infection was detected simultaneously. Logistic regression analysis was used to determine the factors associated with uptake of HIV testing. Results In total, 4565 Chinese local FSWs (CL-FSWs) and 636 cross-border migrant Vietnamese FSWs (CMV-FSWs) were recruited into this study. HIV-1 prevalence in CL-FSWs and CMV-FSWs was 0.70% and 3.14%, respectively. The rate of self-reported uptake of HIV testing in CL-FSWs and CMV-FSWs was 54.56% and 45.44%, respectively. The rates of self-reported uptake of HIV testing declined in both groups from 2016 to 2018. Logistic regression analysis indicated that a number of factors, including socio-demographic characteristics (age
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- 2022
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3. The Threat of Potentially Pathogenic Bacteria in the Feces of Bats
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Yuyuan Huang, Yamin Sun, Qianni Huang, Xianglian Lv, Ji Pu, Wentao Zhu, Shan Lu, Dong Jin, Liyun Liu, Zhengli Shi, Jing Yang, and Jianguo Xu
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bat ,metataxonomics ,culturomics ,pathogenic species ,fecal microbiota ,Microbiology ,QR1-502 - Abstract
ABSTRACT Bats have attracted global attention because of their zoonotic association with severe acute respiratory syndrome coronavirus (SARS-CoV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Previous and ongoing studies have predominantly focused on bat-borne viruses; however, the prevalence or abundance of bat-borne pathogenic bacteria and their potential public health significance have largely been neglected. For the first time, this study used both metataxonomics (16S rRNA marker gene sequencing) and culturomics (traditional culture methods) to systematically evaluate the potential public health significance of bat fecal pathogenic bacteria. To this end, fecal samples were obtained from five bat species across different locations in China, and their microbiota composition was analyzed. The results revealed that the bat microbiome was most commonly dominated by Proteobacteria, while the strictly anaerobic phylum Bacteroidetes occupied 35.3% of the relative abundance in Rousettus spp. and 36.3% in Hipposideros spp., but less than 2.7% in the other three bat species (Taphozous spp., Rhinolophus spp., and Myotis spp.). We detected 480 species-level phylotypes (SLPs) with PacBio sequencing, including 89 known species, 330 potentially new species, and 61 potentially higher taxa. In addition, a total of 325 species were identified by culturomics, and these were classified into 242 named species and 83 potentially novel species. Of note, 32 of the 89 (36.0%) known species revealed by PacBio sequencing were found to be pathogenic bacteria, and 69 of the 242 (28.5%) known species isolated by culturomics were harmful to people, animals, or plants. Additionally, nearly 40 potential novel species which may be potential bacterial pathogens were identified. IMPORTANCE Bats are one of the most diverse and widely distributed groups of mammals living in close proximity to humans. In recent years, bat-borne viruses and the viral zoonotic diseases associated with bats have been studied in great detail. However, the prevalence and abundance of pathogenic bacteria in bats have been largely ignored. This study used high-throughput sequencing techniques (metataxonomics) in combination with traditional culture methods (culturomics) to analyze the bacterial flora in bat feces from different species of bats in China, revealing that bats are natural hosts of pathogenic bacteria and carry many unknown bacteria. The results of this study can be used as guidance for future investigations of bacterial pathogens in bats.
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- 2022
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4. Discovery and Evolutionary Analysis of a Novel Bat-Borne Paramyxovirus
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Wentao Zhu, Yuyuan Huang, Xiaojie Yu, Haiyun Chen, Dandan Li, Libo Zhou, Qianni Huang, Liyun Liu, Jing Yang, and Shan Lu
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paramyxovirus ,Jeilongvirus ,bat ,co-evolutionary ,virus discovery ,Microbiology ,QR1-502 - Abstract
Paramyxoviruses are a group of RNA viruses, such as mumps virus, measles virus, Nipah virus, Hendra virus, Newcastle disease virus, and parainfluenza virus, usually transmitted by airborne droplets that are predominantly responsible for acute respiratory diseases. In this paper, we identified a novel paramyxovirus belonging to genus Jeilongvirus infecting 4/112 (3.6%) bats from two trapping sites of Hainan Province of China. In these animals, the viral RNA was detected exclusively in kidney tissues. This is the first full-length Jeilongvirus genome (18,095 nucleotides) from bats of genus Hipposideros, which exhibits a canonical genome organization and encodes SH and TM proteins. Results, based on phylogenic analysis and genetic distances, indicate that the novel paramyxovirus formed an independent lineage belonging to genus Jeilongvirus, representing, thus, a novel species. In addition, the virus-host macro-evolutionary analysis revealed that host-switching was not only a common co-phylogenetic event, but also a potential mechanism by which rats are infected by bat-origin Jeilongvirus through cross-species virus transmission, indicating a bat origin of the genus Jeilongvirus. Overall, our study broadens the viral diversity, geographical distribution, host range, and evolution of genus Jeilongvirus.
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- 2022
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5. Optimization of chemical fertilizer use was modified by smallholders’ livelihood differentiation through mediating effects of agricultural socialized services
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Qianni Huang, Yajuan Li, Xiaoqiang Jiao, Zhichao An, and Ji Ma
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As the mainstay of global food security feeding more with less is one of the major challenges faced by smallholder-dominated food production. This challenge has become increasingly more daunting due to the development of smallholders’ livelihood differentiation induced by urbanization. Usually, smallholders take insure approach to food production on chemical fertilizer use, considering the time of part-time jobs. With the continuous improvement of agricultural socialized services, it remains to be verified, whether the impact of smallholders’ livelihood differentiation on optimal chemical fertilizer application will be mitigated. Therefore, we conducted a study in seven provinces of China with 1112 smallholders. Through the mediation model, we found that: (1) the amount of chemical fertilizer use by smallholders was generally higher than the economically optimal level. (2) Smallholders with differentiated livelihoods can significantly reduce chemical fertilizer application and contribute to maintaining the optimal economic chemical fertilizer application level through the mediating effect of agricultural socialized services demand, which is approximately 13.03%. (3) With farmer livelihood differentiation, the increase in smallholders’ demand for socialized services includes not only an increase in the probability of service selection but also an increase in the demand for service intensity and organization degree of the service providers.
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- 2022
6. Phenotypic and genomic characteristics of Brevibacterium zhoupengii sp. nov., a novel halotolerant actinomycete isolated from bat feces
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Yuyuan Huang, Lingzhi Dong, Jian Gong, Jing Yang, Shan Lu, Xin-He Lai, Dong Jin, Qianni Huang, Ji Pu, Liyun Liu, and Jianguo Xu
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DNA, Bacterial ,China ,Cardiolipins ,Ribose ,Siderophores ,Peptidoglycan ,Sodium Chloride ,Diaminopimelic Acid ,Applied Microbiology and Biotechnology ,Microbiology ,Feces ,Chiroptera ,RNA, Ribosomal, 16S ,Animals ,Brevibacterium ,Phospholipids ,Phylogeny ,Base Composition ,Sheep ,Fatty Acids ,Galactose ,Vitamin K 2 ,General Medicine ,Genomics ,Sequence Analysis, DNA ,Bacterial Typing Techniques ,Actinobacteria ,Teichoic Acids - Abstract
Two strictly aerobic, Gram-staining-positive, non-spore-forming, regular rod-shaped (approximately 0.7 × 1.9 mm) bacteria (HY170
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- 2022
7. Morphological and genomic characteristics of two novel halotolerant actinomycetes, Tomitella gaofuii sp. nov. and Tomitella fengzijianii sp. nov. isolated from bat faeces
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Yuyuan Huang, Jing Yang, Shan Lu, Xin-He Lai, Dong Jin, Juan Zhou, Sihui Zhang, Qianni Huang, Xianglian Lv, Wentao Zhu, Ji Pu, Ying Huang, Liyun Liu, and Jianguo Xu
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DNA, Bacterial ,China ,Fatty Acids ,Nucleic Acid Hybridization ,Genomics ,Sequence Analysis, DNA ,Applied Microbiology and Biotechnology ,Microbiology ,Bacterial Typing Techniques ,Actinobacteria ,Feces ,Chiroptera ,RNA, Ribosomal, 16S ,Actinomyces ,Animals ,Ecology, Evolution, Behavior and Systematics ,Phospholipids ,Phylogeny - Abstract
Four white-pigmented, Gram-staining-positive, strictly aerobic, non-spore-forming, irregular rod-shaped bacteria were isolated from the faeces of bats collected from Guangxi autonomous region (22°20'54″N, 106°49'20″E; July 28, 2011) and Chongqing city (30°02'15″N, 107°07'4″E; September 1, 2011) of South China. The strains shared 99.3-99.9% 16S rRNA gene sequence similarity by BLAST search among them, and belonged to genus Tomitella according to 16S rRNA gene and genomic sequence-based phylogenetic/phylogenomic analyses. Strains HY172
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- 2021
8. SMALLHOLDER ADOPTION OF GREEN PRODUCTION TECHNOLOGIES ON THE NORTH CHINA PLAIN: EVIDENCE FROM SCIENCE AND TECHNOLOGY BACKYARDS.
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Yajuan LI and Qianni HUANG
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AGRICULTURAL services , *AGRICULTURAL technology , *CUSTOMER services , *TECHNOLOGICAL innovations - Abstract
Understanding the impact of agricultural socialized services on smallholder adoption of green production technologies and their mechanisms of action is of great importance for sustainability of farming systems. Currently, there were numerous related studies, but it is still unclear how to gradually achieve the diffusion of technological innovations on pilot sites to a regional level. To answer this question, this paper presents the pathways and mechanisms of green production technologies diffusion by comparing international typical service organizations or modes such as agricultural technology extension service centers (ATESC), farmer field schools (FFS), participatory technology innovation (PTI) and integrated colearning approach (ICLA), while taking Wangzhuang Science and Technology Backyard (WZ STB) in Quzhou, Hebei Province, China as an example. This research had three key outcomes. (1) The combination of collaborative, tree-shaped and jump-start diffusion modes promotes the diffusion of participatory technology innovation to different scales, such as farmers, villages and counties. (2) The three diffusion modes combine and expand the advantages of existing international modes. The collaborative diffusion mode not only provides full scope for the advantages of PTI, but also provides smallholders with service supply for the whole production period. The tree-shaped diffusion mode combines the advantages of FFS from point technology innovation to village diffusion, while achieving a full range of technical service support. The jump-start diffusion mode cannot only achieve large-scale technology diffusion like ATESC and ICLA, but also empower smallholders through adaptive technology innovation. (3) Trust is the key to promoting smallholder reliance on the science and technology provided by STB and to promote their adoption of green production technologies. Accordingly, the following policy recommendations were proposed: strengthen the combination of top-down and bottom-up technology innovation and diffusion models, establish an effective service communication platform and evaluation mechanism, and strengthen the linkage mechanism between socialized services providers and smallholders, which will provide a realistic basis for the national policy of targeted socialized services provision and promote smallholder adoption of green production technologies. [ABSTRACT FROM AUTHOR]
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- 2022
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9. SMALLHOLDER ADOPTION OF GREEN PRODUCTION TECHNOLOGIES ON THE NORTH CHINA PLAIN: EVIDENCE FROM SCIENCE AND TECHNOLOGY BACKYARDS
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Qianni HUANG and Yajuan LI
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General Veterinary ,General Agricultural and Biological Sciences ,Biotechnology - Published
- 2022
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