Publications by authors named "Wei-zhong Yang"

is increasingly resistant to antibiotics, significantly lowering eradication rates and posing a major public health challenge. This study investigated the distribution of antibiotic-resistant phenotypes and genotypes of in Hainan Province. It determined the minimum inhibitory concentrations (MICs) of six antibiotics using the E-test method and detected resistance genes via Sanger sequencing.

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Background: A viral infection can modify the risk to subsequent viral infections via cross-protective immunity, increased immunopathology, or disease-driven behavioral change. There is limited understanding of virus-virus interactions due to lack of long-term population-level data.

Methods: Our study leverages passive surveillance data of 10 human acute respiratory viruses from Beijing, Chongqing, Guangzhou, and Shanghai collected during 2009 to 2019: influenza A and B viruses; respiratory syncytial virus A and B; human parainfluenza virus (HPIV), adenovirus, metapneumovirus (HMPV), coronavirus, bocavirus (HBoV), and rhinovirus (HRV).

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Article Synopsis
  • RSV infection in infants poses significant global health challenges, with cough and shortness of breath being common symptoms, especially in those under one year old.
  • A comprehensive review of 47 studies revealed that manifestations of RSV are reported less frequently in medium and low HDI countries compared to high HDI countries.
  • The study found that RSV-infected infants are at a higher risk of developing wheezing, with odds ratios indicating significant associations for both immediate and long-term respiratory issues.
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  • Acute diarrhea with fever may indicate a more severe condition, and this study aimed to analyze the characteristics and pathogens involved in febrile diarrhea across different age groups in China between 2011 and 2020.
  • A nationwide survey of 146,296 acute diarrhea patients showed that 18.6% had fever, with the highest incidence (24.2%) in children under 5, who also had a greater prevalence of viral pathogens.
  • The study found notable differences in pathogen associations with fever, revealing that nontyphoidal Salmonella was more common in febrile patients across all ages, while rotavirus A and diarrheagenic E. coli were more strongly linked to fever in specific age groups.
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Background: Traditional bismuth-containing quadruple therapy, as a first-line eradication treatment for Helicobacter pylori (H. pylori), has several disadvantages, including drug side effects, low medication adherence, and high costs. Trials of high-dose dual treatment have demonstrated its advantages, which include good safety and adherence profiles.

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Background: Severe community-acquired pneumonia (SCAP) is associated with a substantial number of hospitalisations and deaths worldwide. Infection or co-infection patterns, along with their age dependence and clinical effects are poorly understood. We aimed to explore the causal and epidemiological characteristics by age, to better describe patterns of community-acquired pneumonia (CAP) and their association with severe disease.

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Background: Endoscopic submucosal dissection (ESD) is a treatment for early gastric cancer with the advantages of small invasion, fewer complications, and a low local recurrence rate. However, there is a high risk of complications such as bleeding and perforation, and the operation time is also longer. ESD operation time is closely related to bleeding and perforation.

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Gallbladder cancer is a malignant tumor with a high mortality rate. Accumulating evidence supports that lncRNA MEG3 may halt the progression of gallbladder cancer, while the downstream mechanism is rarely studied. Thus, we aim to investigate the molecular basis of the tumor-suppressing role of lncRNA MEG3 in gallbladder cancer.

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Background: Acute meningitis or encephalitis (AME) results from a neurological infection causing high case fatality and severe sequelae. AME lacked comprehensive surveillance in China.

Methods: Nation-wide surveillance of all-age patients with AME syndromes was conducted in 144 sentinel hospitals of 29 provinces in China.

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Background: To combat the coronavirus disease 2019 (COVID-19) pandemic, nonpharmaceutical interventions (NPIs) were implemented worldwide, which impacted a broad spectrum of acute respiratory infections (ARIs).

Methods: Etiologically diagnostic data from 142 559 cases with ARIs, who were tested for 8 viral pathogens (influenza virus [IFV], respiratory syncytial virus [RSV], human parainfluenza virus [HPIV], human adenovirus [HAdV], human metapneumovirus [HMPV], human coronavirus [HCoV], human bocavirus [HBoV], and human rhinovirus [HRV]) between 2012 and 2021, were analyzed to assess the changes in respiratory infections in China during the first COVID-19 pandemic year compared with pre-pandemic years.

Results: Test-positive rates of all respiratory viruses decreased during 2020, compared to the average levels during 2012-2019, with changes ranging from -17.

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Background: Non pharmaceutical interventions (NPI) including hand washing directives were implemented in China and worldwide to combat the COVID-19 pandemic, which are likely to have had impacted a broad spectrum of enteric pathogen infections.

Methods: Etiologically diagnostic data from 45 937 and 67 395 patients with acute diarrhea between 2012 and 2020, who were tested for seven viral pathogens and 13 bacteria respectively, were analyzed to assess the changes of enteric pathogen infections in China during the first COVID-19 pandemic year compared to pre-pandemic years.

Findings: Test positive rates of all enteric viruses decreased during 2020, compared to the average levels during 2012-2019, with a relative decrease of 71•75% for adenovirus, 58•76% for norovirus, 53•50% for rotavirus A, and 72•07% for the combination of other four uncommon viruses.

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Article Synopsis
  • A nationwide study in China from 2009 to 2019 analyzed over 231,000 patients with acute respiratory infections, revealing significant insights into viral and bacterial infection rates.
  • Children under 5 and school-aged children had the highest rates of viral (46.9%) and bacterial (30.9%) infections, with influenza and Streptococcus pneumoniae identified as the leading pathogens.
  • The research highlighted complex interactions between different pathogens and suggested that targeted strategies for diagnosis and prevention should consider factors such as age, location, and seasonal variation in respiratory infections.
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Objectives To investigate the epidemiological features of diarrheagenic Escherichia coli (DEC) in patients with acute diarrhea in China. Methods An active sentinel surveillance was performed in all-age patients with acute diarrhea in China, 2009‒2018. DEC was isolated and identified by serological assay and PCR from stool samples.

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  • Biomedical engineering (BME) in the biomedical materials track combines engineering and medical education, focusing on cutting-edge technology and interdisciplinary knowledge.
  • The paper analyzes opportunities and challenges within this specialty education, considering national strategies and industry needs regarding expert qualifications in biomedical materials.
  • It proposes a reconstruction of the core knowledge system and suggests a diversified training model to develop skilled professionals who can lead advancements in diagnosis, treatment technology, and the medical device industry.
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Background: COVID-19 can lead to increased psychological symptoms such as post-traumatic stress disorder (PTSD), depression, and anxiety among patients with COVID-19. Based on the previous mindfulness-based interventions proved to be effective, this protocol reports a design of a randomized controlled trial aiming to explore the efficacy and possible mechanism of a mindful living with challenge (MLWC) intervention developed for COVID-19 survivors in alleviating their psychological problems caused by both the disease and the pandemic.

Methods: In April 2021, more than 1600 eligible participants from Hubei Province of China will be assigned 1:1 to an online MLWC intervention group or a waitlist control group.

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National-based prospective surveillance of all-age patients with acute diarrhea was conducted in China between 2009‒2018. Here we report the etiological, epidemiological, and clinical features of the 152,792 eligible patients enrolled in this analysis. Rotavirus A and norovirus are the two leading viral pathogens detected in the patients, followed by adenovirus and astrovirus.

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Background and Purpose- Predicting the risk of stroke and determining intervention indications are highly important for patients with Moyamoya disease (MMD). Here, we evaluated a novel MMD grading system based on collateral circulation and Suzuki stage to evaluate symptoms and predict prognosis. Methods- In total, 301 idiopathic MMD patients were retrospectively analyzed between 2014 and 2016.

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Article Synopsis
  • This study examines the epidemiologic characteristics of moyamoya disease (MMD) in China, focusing on prevalence, age and gender distribution, and initial symptoms among a cohort of 4,128 patients.
  • The median age of symptom onset was approximately 30 years, showing a bimodal distribution with peaks at ages 5-9 and 35-45, and the patient gender ratio was even at 1:1.
  • Key initial symptoms included transient ischemic attacks (48.13%), with variations in ischemic and hemorrhagic types observed across different regions of China, particularly highlighting a higher prevalence of hemorrhagic cases in East China.
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OBJECTIVE The object of this study was to summarize the long-term effect of encephaloduroarteriosynangiosis (EDAS) for the treatment of pediatric moyamoya disease (MMD) and to investigate factors influencing the clinical outcomes of EDAS. METHODS Clinical features, angiographic findings, and clinical outcomes were analyzed among MMD patients younger than 18 years who had been treated with EDAS between 2002 and 2007 at the authors' institution. The Kaplan-Meier method was used to estimate stroke risk after EDAS.

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Aim: To investigate the role of oxidative stress in regulating the functional expression of P-glycoprotein (P-gp) in mitochondria of D407 cells.

Methods: D407 cells were exposed to different ranges of concentrations of HO. The mitochondrial location of P-gp in the cells subjected to oxidative stress was detected by confocal analysis.

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The aim of the present study was to determine the effect of baicalin on the expression of miR-497 and its target B-cell lymphoma-2 (Bcl-2) in the hippocampus of kainic acid (KA)-induced epileptic mice. To establish status epilepticus (SE), 0.1 µg/5 µl KA was injected into the lateral cerebral ventricle in mice, which then received an intraperitoneal injection of baicalin (100 mg/kg) after 1 and 8 h.

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Previous studies from our laboratories showed that an anti-inflammatory drug, 5-lipoxygenase inhibitor zileuton, attenuates ischemic brain damage via inhibiting inflammatory reaction. However, it was elusive whether zileuton attenuates inflammatory reaction and ischemic brain damage through the modulation of PI3K/Akt signaling pathway. In the present study, we, for the first time, investigated whether PI3K/Akt pathway was involved in zileuton's anti-inflammatory and neuroprotective properties against brain damage following experimental ischemic stroke.

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Objective: To investigate the impact of impoundment and active public health interventions on rodent populations and rodent-borne diseases in the Three Gorges reservoir region from 1997 to 2012.

Methods: Surveillance data from 1997 to 2012 were extracted from the Public Health Surveillance System of The Three Gorges established in 1997. Temporal changes in the incidences of hemorrhagic fever with renal syndrome (HFRS) and leptospirosis, rodent density, pathogen-carrying rates, and their correlations were analyzed.

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Objectives: In epidemiological research, major studies have focused on theoretical models; however, few methods of visual analysis have been used to display the patterns of disease distribution.

Design: For this study, a method combining the space-time cube (STC) with space-time scan statistics (STSS) was used to analyze the pattern of incidence of hand-foot-mouth disease (HFMD) in Guangdong Province from May 2008 to March 2009. In this research, STC was used to display the spatiotemporal pattern of incidence of HFMD, and STSS were used to detect the local aggregations of the disease.

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Our previous studies demonstrated that propofol protects rat brain against focal cerebral ischemia. However, whether propofol attenuates early brain injury after subarachnoid hemorrhage in rats remains unknown until now. The present study was performed to evaluate the effect of propofol on early brain injury after subarachnoid hemorrhage in rats and further explore the potential mechanisms.

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