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Emerging Microbes & Infections

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https://www.readbyqxmd.com/read/29789582/the-concordance-between-upper-and-lower-respiratory-microbiota-in-children-with-mycoplasma-pneumoniae-pneumonia
#1
Wenkui Dai, Heping Wang, Qian Zhou, Xin Feng, Zhiwei Lu, Dongfang Li, Zhenyu Yang, Yanhong Liu, Yinhu Li, Gan Xie, Kunling Shen, Yonghong Yang, Yuejie Zheng, Shuaicheng Li
In recent years, the morbidity of Mycoplasma pneumoniae pneumonia (MPP) has dramatically increased in China. An increasing number of studies indicate that an imbalance in the respiratory microbiota is associated with respiratory infection. We selected 28 hospitalized patients infected with M. pneumoniae and 32 healthy children. Nasopharyngeal (NP) and oropharyngeal (OP) swabs were collected from healthy children, whereas NP, OP and bronchoalveolar lavage (BAL) specimens were collected from patients. Microbiota analysis was performed on all microbial samples using 16 S ribosomal RNA (16 S rRNA) sequencing...
May 23, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29777102/a-virus-like-particle-based-tetravalent-vaccine-for-hand-foot-and-mouth-disease-elicits-broad-and-balanced-protective-immunity
#2
Wei Zhang, Wenlong Dai, Chao Zhang, Yu Zhou, Pei Xiong, Shuxia Wang, Xiaohua Ye, Qingwei Liu, Dongming Zhou, Zhong Huang
Hand, foot, and mouth disease (HFMD) is an infectious disease that mainly affects infants and children, causing considerable morbidity and mortality worldwide. HFMD is commonly caused by enterovirus 71 (EV71) and coxsackieviruses A16 (CVA16), A6 (CVA6), and A10 (CVA10). Formalin-inactivated EV71 vaccines are currently available in China; however, these vaccines fail to confer cross-protection against infections by other HFMD-causing enteroviruses, highlighting the necessity of developing a multivalent HFMD vaccine...
May 18, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29777096/the-first-isolate-of-candida-auris-in-china-clinical-and-biological-aspects
#3
Xiaojuan Wang, Jian Bing, Qiushi Zheng, Feifei Zhang, Jingbo Liu, Huizhen Yue, Li Tao, Han Du, Yina Wang, Hui Wang, Guanghua Huang
The emerging human fungal pathogen Candida auris has been recognized as a multidrug resistant species and is associated with high mortality. This fungus was first described in Japan in 2009 and has been reported in at least 18 countries on five continents. In this study, we report the first isolate of C. auris from the bronchoalveolar lavage fluid (BALF) of a hospitalized woman in China. Interestingly, this isolate is susceptible to all tested antifungals including amphotericin B, fluconazole, and caspofungin...
May 18, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29769522/a-sandwich-strategy-for-functional-cure-of-chronic-hepatitis-b
#4
LETTER
Xuan-Yi Wang, Yu-Mei Wen
No abstract text is available yet for this article.
May 17, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29769530/comparison-of-the-genotypic-and-phenotypic-properties-of-hiv-1-standard-subtype-b-and-subtype-b-b-env-molecular-clones-derived-from-infections-in-china
#5
Hui Xie, Jianhui Nie, Qingqing Chen, Weijin Huang, Youchun Wang
Although a number of standardized human immunodeficiency virus 1 (HIV-1) pseudoviruses have been generated to assess neutralizing antibodies, subtype B/B' has not been comprehensively characterized either genotypically or phenotypically. Full-length env genes were isolated from plasma samples derived from B/B'-infected individuals, including former plasma donors and men who had sex with men. The neutralization properties of these pseudoviruses were determined by testing against sCD4, 16 neutralizing monoclonal antibodies and 44 plasma samples, including samples from those infected with the three major prevalent clades in China...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29765037/novel-triple-reassortant-influenza-viruses-in-pigs-guangxi-china
#6
Ping He, Guojun Wang, Yanning Mo, Qingxiong Yu, Xiong Xiao, Wenjuan Yang, Weifeng Zhao, Xuan Guo, Qiong Chen, Jianqiao He, Mingli Liang, Jian Zhu, Yangbao Ding, Zuzhang Wei, Kang Ouyang, Fang Liu, Hui Jian, Weijian Huang, Adolfo García-Sastre, Ying Chen
Considered a "mixing vessel" for influenza viruses, pigs can give rise to new influenza virus reassortants that can threaten humans. During our surveillance of pigs in Guangxi, China from 2013 to 2015, we isolated 11 H1N1 and three H3N2 influenza A viruses of swine origin (IAVs-S). Out of the 14, we detected ten novel triple-reassortant viruses, which contained surface genes (hemagglutinin and neuraminidase) from Eurasian avian-like (EA) H1N1 or seasonal human-like H3N2, matrix (M) genes from H1N1/2009 pandemic or EA H1N1, nonstructural (NS) genes from classical swine, and the remaining genes from H1N1/2009 pandemic...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29765033/an-epizootic-of-chlamydia-psittaci-equine-reproductive-loss-associated-with-suspected-spillover-from-native-australian-parrots
#7
Cheryl Jenkins, Martina Jelocnik, Melinda L Micallef, Francesca Galea, Alyce Taylor-Brown, Daniel R Bogema, Michael Liu, Brendon O'Rourke, Catherine Chicken, Joan Carrick, Adam Polkinghorne
Chlamydia psittaci is an avian pathogen capable of spill-over infections to humans. A parrot C. psittaci strain was recently detected in an equine reproductive loss case associated with a subsequent cluster of human C. psittaci infections. In this study, we screened for C. psittaci in cases of equine reproductive loss reported in regional New South Wales, Australia during the 2016 foaling season. C. psittaci specific-PCR screening of foetal and placental tissue samples from cases of equine abortion (n = 161) and foals with compromised health status (n = 38) revealed C...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29765021/prospective-surveillance-for-influenza-virus-in-chinese-swine-farms
#8
Benjamin D Anderson, Mai-Juan Ma, Guo-Lin Wang, Zhen-Qiang Bi, Bing Lu, Xian-Jun Wang, Chuang-Xin Wang, Shan-Hui Chen, Yan-Hua Qian, Shao-Xia Song, Min Li, Teng Zhao, Meng-Na Wu, Laura K Borkenhagen, Wu-Chun Cao, Gregory C Gray
Pork production in China is rapidly increasing and swine production operations are expanding in size and number. However, the biosecurity measures necessary to prevent swine disease transmission, particularly influenza. viruses (IAV) that can be zoonotic, are often inadequate. Despite this risk, few studies have attempted to comprehensively study IAV ecology in swine production settings. Here, we present environmental and animal sampling data collected in the first year of an ongoing five-year prospective epidemiological study to assess IAV ecology as it relates to swine workers, their pigs, and the farm environment...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29765019/relationship-between-circulating-vascular-endothelial-growth-factor-and-its-soluble-receptor-in-patients-with-hemorrhagic-fever-with-renal-syndrome
#9
Emil Pal, Misa Korva, Katarina Resman Rus, Nataša Kejžar, Petra Bogovič, Franc Strle, Tatjana Avšič-Županc
Hemorrhagic fever with renal syndrome (HFRS) is characterized by endothelial dysfunction with capillary leakage without obvious cytopathology in the capillary endothelium. The aim of the study was to analyze the kinetics of vascular endothelial growth factor (VEGF) and its soluble receptor (sVEGFR-2) in HFRS patients infected with Dobrava (DOBV) or Puumala virus (PUUV). VEGF and sVEGFR-2 levels were measured in daily plasma and urine samples of 73 patients with HFRS (58 with PUUV, 15 with DOBV) and evaluated in relation to clinical and laboratory variables...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29760415/rbm24-stabilizes-hepatitis-b-virus-pregenomic-rna-but-inhibits-core-protein-translation-by-targeting-the-terminal-redundancy-sequence
#10
Yongxuan Yao, Bo Yang, Huang Cao, Kaitao Zhao, Yifei Yuan, Yingshan Chen, Zhenhua Zhang, Yun Wang, Rongjuan Pei, Jizheng Chen, Xue Hu, Yuan Zhou, Mengji Lu, Chunchen Wu, Xinwen Chen
The terminal redundancy (TR) sequence of the 3.5-kb hepatitis B virus (HBV) RNA contains sites that govern many crucial functions in the viral life cycle, including polyadenylation, translation, RNA packaging, and DNA synthesis. In the present study, RNA-binding motif protein 24 (RBM24) is shown to be involved in the modulation of HBV replication by targeting the TR of HBV RNA. In HBV-transfected hepatoma cell lines, both knockdown and overexpression of RBM24 led to decreased HBV replication and transcription...
May 14, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29743570/enterovirus-71-infection-of-human-airway-organoids-reveals-vp1-145-as-a-viral-infectivity-determinant
#11
Sabine M G van der Sanden, Norman Sachs, Sylvie M Koekkoek, Gerrit Koen, Dasja Pajkrt, Hans Clevers, Katja C Wolthers
Human enteroviruses frequently cause severe diseases in children. Human enteroviruses are transmitted via the fecal-oral route and respiratory droplets, and primary replication occurs in the gastro-intestinal and respiratory tracts; however, how enteroviruses infect these sites is largely unknown. Human intestinal organoids have recently proven to be valuable tools for studying enterovirus-host interactions in the intestinal tract. In this study, we demonstrated the susceptibility of a newly developed human airway organoid model for enterovirus 71 (EV71) infection...
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29739931/human-testicular-organoid-system-as-a-novel-tool-to-study-zika-virus-pathogenesis
#12
LETTER
Daniel P Strange, Nima Pourhabibi Zarandi, Goral Trivedi, Anthony Atala, Colin E Bishop, Hooman Sadri-Ardekani, Saguna Verma
No abstract text is available yet for this article.
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29739928/sensitive-detection-of-treponema-pallidum-dna-from-the-whole-blood-of-patients-with-syphilis-by-the-nested-pcr-assay
#13
Cuini Wang, Yuanyuan Cheng, Biao Liu, Yuanyuan Wang, Weiming Gong, Yihong Qian, Zhifang Guan, Haikong Lu, Xin Gu, Mei Shi, Pingyu Zhou
The aim of this work was to investigate the application of the nested PCR assay for the detection of Treponema pallidum (TP) DNA from the blood of patients with different stages of syphilis. In this study, a nested PCR method targeting the Tpp47 and polA genes (Tpp47-Tp-PCR and polA-Tp-PCR) was developed to detect TP-DNA in whole blood samples collected from 262 patients with different stages of syphilis (84 primary syphilis, 97 secondary syphilis, and 81 latent syphilis patients). The PCR assay detected T...
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29739926/maldi-tof-ms-for-identification-of-tsukamurella-species-tsukamurella-tyrosinosolvens-as-the-predominant-species-associated-with-ocular-infections
#14
Jade L L Teng, Ying Tang, Samson S Y Wong, Jordan Y H Fong, Zhe Zhao, Chun-Pong Wong, Jonathan H K Chen, Antonio H Y Ngan, Alan K L Wu, Kitty S C Fung, Tak-Lun Que, Susanna K P Lau, Patrick C Y Woo
Although Tsukamurella infections have been increasingly reported in Europe, Asia, America, and Africa, indicating that diseases caused by this group of bacteria are emerging in a global scale, species identification within this genus is difficult in most clinical microbiology laboratories. Recently, we showed that groEL gene sequencing is useful for identification of all existing Tsukamurella species. Nevertheless, PCR sequencing is still considered expensive, time-consuming, and technically demanding, and therefore is yet to be incorporated as a routine identification method in clinical laboratories...
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29739925/re-visiting-the-evolution-dispersal-and-epidemiology-of-zika-virus-in-asia
#15
John H-O Pettersson, Jon Bohlin, Myrielle Dupont-Rouzeyrol, Ola B Brynildsrud, Kristian Alfsnes, Van-Mai Cao-Lormeau, Michael W Gaunt, Andrew K Falconar, Xavier de Lamballerie, Vegard Eldholm, Didier Musso, Ernest A Gould
Based on serological evidence and viral isolation, Zika virus (ZIKV) has circulated for many years relatively benignly in a sylvatic cycle in Africa and an urban cycle in South East Asia (SEA). With the recent availability of limited but novel Indian ZIKV sequences to add to the plethora of SEA sequences, we traced the phylogenetic history and spatio-temporal dispersal pattern of ZIKV in Asia prior to its explosive emergence in the Pacific region and the Americas. These analyses demonstrated that the introduction and dispersal of ZIKV on the Pacific islands were preceded by an extended period of relatively silent transmission in SEA, enabling the virus to expand geographically and evolve adaptively before its unanticipated introduction to immunologically naive populations on the Pacific islands and in the Americas...
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29739922/bordetella-pertussis-isolates-vary-in-their-interactions-with-human-complement-components
#16
Charlotte Brookes, Irene Freire-Martin, Breeze Cavell, Frances Alexander, Stephen Taylor, Ruby Persaud, Norman Fry, Andrew Preston, Dimitri Diavatopoulos, Andrew Gorringe
Whooping cough is a re-emerging respiratory tract infection. It has become clear that there is a need for better understanding of protective immune responses and variation between Bordetella pertussis strains to aid the development of improved vaccines. In order to survive in the host, B. pertussis has evolved mechanisms to evade complement-mediated killing, including the ability to bind complement-regulatory proteins. Here we evaluate the variation in interactions with the complement system among recently isolated strains...
May 9, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29717131/avian-hepatitis-e-virus-infection-of-duck-goose-and-rabbit-in-northwest-china
#17
LETTER
Baoyuan Liu, Mengnan Fan, Beibei Zhang, Yiyang Chen, Yani Sun, Taofeng Du, Yuchen Nan, En-Min Zhou, Qin Zhao
No abstract text is available yet for this article.
May 2, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29717109/substitution-of-d701n-in-the-pb2-protein-could-enhance-the-viral-replication-and-pathogenicity-of-eurasian-avian-like-h1n1-swine-influenza-viruses
#18
Suli Liu, Wenfei Zhu, Zhaomin Feng, Rongbao Gao, Junfeng Guo, Xiyan Li, Jia Liu, Dayan Wang, Yuelong Shu
Eurasian avian-like H1N1 (EA H1N1) swine influenza viruses (SIVs) have become predominant in pig populations in China and have recently been reported to have the most potential to raise the next pandemic in humans. The mutation D701N in the PB2 protein, which accounts for 31% of H1N1 SIVs, has previously been shown to contribute to the adaptation of the highly pathogenic H5N1 or H7N7 avian influenza viruses in mammals. However, little is known of the effects of this substitution on the EA H1N1 viruses. Herein, we investigated the contributions of 701N in the PB2 protein to an EA H1N1 SIV (A/Hunan/42443/2015(H1N1), HuN EA-H1N1), which had 701D in the PB2 protein...
May 2, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29691394/replication-and-pathogenic-potential-of-influenza-a-virus-subtypes-h3-h7-and-h15-from-free-range-ducks-in-bangladesh-in-mammals
#19
Rabeh El-Shesheny, Mohammed M Feeroz, Scott Krauss, Peter Vogel, Pamela McKenzie, Richard J Webby, Robert G Webster
Surveillance of wild aquatic birds and free-range domestic ducks in the Tanguar Haor wetlands in Bangladesh has identified influenza virus subtypes H3N6, H7N1, H7N5, H7N9, and H15N9. Molecular characterization of these viruses indicates their contribution to the genesis of new genotypes of H5N1 influenza viruses from clade 2.3.2.1a that are dominant in poultry markets in Bangladesh as well as to the genesis of the highly pathogenic H5N8 virus currently causing disease outbreaks in domestic poultry in Europe and the Middle East...
April 25, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29691381/genetic-and-evolutionary-analysis-of-emerging-h3n2-canine-influenza-virus
#20
Gairu Li, Ruyi Wang, Cheng Zhang, Shilei Wang, Wanting He, Junyan Zhang, Jie Liu, Yuchen Cai, Jiyong Zhou, Shuo Su
The H3N2 canine influenza virus (CIV) originated from an avian species. Since its emergence, it has circulated in multiple states and has caused pandemics among dog populations; however, no comprehensive studies have explored the causes driving these ongoing cases. The study of the codon usage patterns of viruses can reveal the genetic changes required for the viruses to adapt to new hosts and the external environment. Here we performed a thorough genetic, evolutionary, and codon usage analysis. We identified three evolutionary H3N2 CIV clades from a timescaled phylogenetic tree, namely, Origin, China, and Korea/USA, by principal component analysis (PCA)...
April 25, 2018: Emerging Microbes & Infections
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