Publications by authors named "Xiangjie Yao"

Bamboo shoot is a healthy food rich in dietary fiber (DF). However, its highly insoluble DF and fibrous texture limit its application in industrially processed foods. To achieve industrial processing of bamboo shoot, cellulase was used to improve the physical characteristics of bamboo shoot DF in this study.

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Ventilator-associated pneumonia (VAP) is a common healthcare-acquired infection often arising during artificial ventilation using endotracheal intubation (ETT), which offers a platform for bacterial colonization and biofilm development. In particular, the effects of prolonged COVID-19 on the respiratory system. Herein, we developed an antimicrobial coating (FK-MEM@CMCO-CS) capable of visualizing pH changes based on bacterial infection and releasing meropenem (MEM) and FK13-a1 in a controlled manner.

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Polygonatum cyrtonema Hua (PC) with different processing degrees during the nine-steam-nine-bask processing was selected as the research object to investigate the changes of polysaccharide structure and their protective effect on cisplatin-induced acute kidney injury (AKI) in mice. The polysaccharides (PCP0, PCP4 and PCP9) were extracted, whose polysaccharide contents were 62.45 %, 60.

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Introduction: The emergence of the new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron sublineage, BA.2.86, has sparked global public health concerns for its potential heightened transmissibility and immune evasion.

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Background: Norovirus (NoV) is the main cause of non-bacterial acute gastroenteritis (AGE) outbreaks worldwide. From September 2015 through August 2018, 203 NoV outbreaks involving 2500 cases were reported to the Shenzhen Center for Disease Control and Prevention.

Methods: Faecal specimens for 203 outbreaks were collected and epidemiological data were obtained through the AGE outbreak surveillance system in Shenzhen.

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In this study, we investigated the epidemiology and molecular characteristics of enteroviruses associated with severe hand, foot and mouth disease (HFMD) in Shenzhen, China, during 2014-2018. A total of 137 fecal specimens from patients with severe HFMD were collected. Enterovirus (EV) types were determined using real-time reverse transcription polymerase chain reaction (RT-PCR), RT nested PCR, and sequencing.

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Bioorthogonal metabolic labeling through the endogenous cellular metabolic pathways (e.g., phospholipid and sugar) is a promising approach for effectively labeling live viruses.

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Objective: New clinical indicators are urgently needed for predicting the progression and complications of hand-foot-and-mouth disease (HFMD) caused by EV-A71 infections.

Materials And Methods: Serum specimens from 132 EV-A71 HFMD patients and 73 health children were collected during 2012-2014 in Shenzhen, China. The specific cytokines/chemokines were detected with a 274-human cytokine antibody array, followed by a 38-inflammation cytokine array, and further validated by ELISA.

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Coxsackievirus group A (CV-A) strains are important pathogens of hand, foot, and mouth disease and herpangina. We report here the near-complete genome sequences of 12 CV-A strains isolated from infants and children with different clinical diseases. The presented data will be very useful for future genome-based epidemiological studies.

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Article Synopsis
  • Coxsackievirus A16 (CV-A16) genotypes B1a and B1b have been prevalent in mainland China, with data collected from 3,008 patients suffering from hand, foot, and mouth disease between 2013 and 2017.
  • The overall detection rate of CV-A16 was 16.5%, showing fluctuations over the years, while a significant majority of the detected strains belonged to subgenotype B1b.
  • Two strains were identified as novel and placed in a new clade (subgenogroup B3), with phylogenetic analysis revealing additional new genotypes B1d and B4 among global CV-A16 strains.
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Enterovirus 71 (EV71), the major pathogen of hand-foot-and-mouth disease (HFDM), can cause severe neurological and respiratory manifestations in young children. Viral spread route and tissue tropism are key factors contributing to different pathogenicity of EV71, however it remains a challenge to dynamically visualize EV71 infection in vivo. The present study applies an in situ bioorthogonal fluorescent labeling strategy to track clinically isolated EV71 strains with different pathogenicity in neonatal mice.

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The whole-genome sequence of an enterovirus A71 strain (EV71/SHENZHEN001/2006) isolated in 2006 from a patient with a fatal case of enterovirus infection was determined. Phylogenetic analysis based on the complete VP1 gene classified this strain as subgenotype C4a.

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Enterovirus 71 (EV71) is associated with the severe hand foot and mouth disease (HFMD) outcomes, however the host-virus interaction mechanism and the pathogenesis remain poorly understood. Long non-coding RNAs (lncRNAs) are involved in variety physiological and pathological processes, but the functions of lncRNAs in EV71 infection remain elusive. Here we profiled the expression of lncRNAs in peripheral blood mononuclear cells (PBMCs) from EV71-infected mild patients, severe patients as well as the healthy controls, and identified 8541 lncRNAs were differentially expressed.

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Here, we report the complete genome sequences of four coxsackievirus A16 strains isolated from four children with severe hand, foot, and mouth disease. Three of them were assigned to subgenotype B1b based on phylogenetic analysis of the VP1 gene, and the other one belonged to subgenotype B1a.

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Enterovirus 71 (EV71) is the main causative agent of hand, foot and mouth disease (HFMD), which induces significantly elevated levels of cytokines and chemokines, leading to local or system inflammation and severe complications, whereas the underlying regulatory mechanisms and the inflammatory pathogenesis remain elusive. ARRDC4 is one member of arrestins family, having important roles in glucose metabolism and G-protein-coupled receptors (GPCRs) related physiological and pathological processes, however, the function of ARRDC4 in innate immune system is largely unknown. Here we identified that ARRDC4 expression was increased after EV71 infection in THP-1-derived macrophages and verified in EV71-infected HFMD patients and the healthy candidates.

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Optical fluorescence imaging is an important strategy to explore the mechanism of virus-host interaction. However, current fluorescent tag labeling strategies often dampen viral infectivity. The present study explores an in situ fluorescent labeling strategy in order to preserve viral infectivity and precisely monitor viral infection in vivo.

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Article Synopsis
  • Noroviruses (NoVs) are the primary cause of gastroenteritis outbreaks globally, with a new variant known as GII.4 Sydney 2012 driving increased epidemic activity since late 2012.
  • In Shenzhen, China, three significant NoV outbreaks occurred from late 2012 to early 2013, affecting two social welfare homes and a factory, with detection rates ranging from 26.2% to 59.3%.
  • All NoV sequences from these outbreaks were identified as the GII.4 Sydney 2012 variant, including recombinant strains, indicating its role in the recent epidemics in the area.
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Four enterovirus D68 (EV-D68) strains from four children with influenza-like illness were identified in Shenzhen, southern China, in late 2015. Here, we announce the availability of these viral genomes in GenBank. The genomic sequences of these EV-D68 strains showed the closest phylogenetic relationship to strains from northern China.

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The whole-genome sequences of seven fatal enterovirus 71 (EV71) strains, isolated in southern China, in 2014, were determined. The complete genome sequences of these strains displayed close relationships to native EV71 strains and showed 94.2% to 99.

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Background: Human Enterovirus A71 (EV-A71) is one of the severest enteroviruses that causes hand, foot, and mouth disease (HFMD) among children. This study identified the mutations of EV-A71 VP1 amino acid residues over a number of years and explored the possible association of identified mutations and HFMD epidemic outbreaks in Shenzhen, China.

Methods: A total of 3760 stool specimens were collected from HFMD patients by Shenzhen Centers for Disease Control and Prevention (CDC) between 1998 and 2013.

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Article Synopsis
  • Coxsackievirus A8 (CV-A8) is a virus that can cause various illnesses, including hand, foot and mouth disease and meningitis, making it significant in infectious disease studies.
  • This report presents the first complete genome sequences of CV-A8 strains linked to HFMD since the original strain was identified in 1949, revealing substantial genetic differences from the prototype strain Donovan.
  • Phylogenetic analysis showed distinct clustering of CV-A8 strains, highlighting geographical evolution, with Chinese and Thai strains forming separate lineages from Donovan and indicating potential relatedness to other enteroviruses.
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  • * The two strains are named RVC/SZ94/CHN/2011 and RVC/SZ272/CHN/2011.
  • * These strains show a close genetic relationship to a 2007 strain from China and a 2008 strain from Japan.
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Article Synopsis
  • The study aimed to analyze the genetic evolution of the VP1 region of Coxsackie virus A4 (CVA4) from herpangina cases in Shenzhen during 2012 and 2014.
  • Researchers used real-time reverse transcription-PCR to test various enteroviruses, amplified the VP1 gene of positive samples, and conducted homology and phylogenetic analysis.
  • Findings showed that the CVA4 strains from both years belonged to genotype GIb, with notable genetic variations, indicating different evolutionary trends between the 2012 and 2014 strains.
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Hand, foot, and mouth disease (HFMD) is caused by human enteroviruses, especially by enterovirus 71 (EV71) and coxsackievirus A16 (CA16). Patients infected with different enteroviruses show varied clinical symptoms. The aim of this study was to determine whether the etiological spectrum of mild and severe HFMD changed, and the association between pathogens and clinical features.

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We determined the complete genome sequence of a coxsackievirus A16 strain (CVA16/SZ29/CHN/2014) from a fatal case in Shenzhen, southern China, in 2014. The strain was assigned to subgenotype B1b based on phylogenetic analysis of the VP1 gene.

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