Recently, the incidence of reported pertussis cases of adults has dramatically increased in Japan. In the present study, we analyzed seven Bordetella pertussis isolates recovered from adults in Japan using pulsed-field gel electrophoresis (PFGE) and sequencing of their antigenic and virulence-associated proteins, compared with those from children. PFGE analysis demonstrated that the adult strains were closely related to the child strains (78-100% genetic similarity). On the other hand, the genotyping revealed that 71% (5/7) of the adult strains and 47% (25/53) of the child strains had the same combination of antigenic/virulence-associated allelic variants (ptxS1B/prn1/fim2-1/fim3A/fhaB1/tcfA2) as the Japanese vaccine strain Tohama, respectively. In comparison to the child strains, there was no apparent antigenic and genetic shift in the adult strains. Our result suggests that (i) there is no B. pertussis circulating strain specific to adults and (ii) the antigenic/virulence-associated proteins are unrelated to the rise in adult pertussis incidence in Japan.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.vaccine.2008.01.020 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of "normal" versus "mild carpal tunnel syndrome" electrodiagnostic report on surgeon decision and patients clinical outcomes.
Arch Orthop Trauma Surg
January 2025
Orthopedics Research Center, Mashhad University of Medical Science, Mashhad, Iran.
Introduction: There exist conflicting electrodiagnostic reports between diagnosing mild carpal tunnel syndrome (CTS) and normal results, depending on the interpretation methods used by electrodiagnosticians. This underscores the necessity for precise clinical guidelines. This study aims to assess how the variation between mild and normal electrophysiological reports impacts (1) subsequent clinical outcomes in patients diagnosed with CTS and (2) physicians' decision-making.
View Article and Find Full Text PDFClinical Manifestations.
Alzheimers Dement
December 2024
Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Background: Stressors occurring over the lifespan (i.e., lifetime stressor exposure) are hypothesized to contribute to greater risk of cognitive decline and dementia.
View Article and Find Full Text PDFPrevalence and risk factors of antibiotic resistance for urinary tract infections in patients presenting to a Belgian tertiary care emergency department: testing the national guidelines against the local setting.
Acta Clin Belg
January 2025
Internal Medicine department, UZ Brussel, Internal Medicine Research Group, Vrije Universiteit Brussel, Brussels, Belgium.
Objectives: Urinary tract infections (UTIs) are an important cause of empiric antibiotic (over)treatment at the emergency department (ED). To enhance empiric antibiotic choices, mapping the national and local microbiology and antimicrobial resistance (AMR) patterns is crucial. This study aims to examine resistance patterns at a Brussels ED and to identify risk factors for AMR to evaluate current treatment guidelines and help combat AMR.
View Article and Find Full Text PDFAnaesthesia teams´ perception of mental wellbeing, the psychosocial work environment and patient safety culture.
Acta Anaesthesiol Scand
February 2025
Danish Society for Patient Safety.
Background: Mental health issues among healthcare professionals (HCPs) are rising, impacting individual wellbeing, healthcare systems, and patient safety. This exploratory study aimed to analyse the association between anaesthesia teams' perception of their mental wellbeing, psychosocial work environment, and patient safety culture in a university hospital's anaesthesiology department. Second, to identify types of stressors and strategies to overcome them.
View Article and Find Full Text PDFWild-Type and rtA181T/sW172* Mutant Strains of Hepatitis B Virus Drive Hepatocarcinogenesis via Distinct GRP78-Mediated ER Stress Pathways.
J Med Virol
January 2025
Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu, China.
Glucose-regulated protein 78 kDa (GRP78), a key marker of endoplasmic reticulum stress (ERS), is upregulated in hepatocellular carcinoma (HCC) tissues, but its role in hepatitis B virus (HBV)-induced tumorigenesis remains unclear. This study aimed to investigate the contribution of GRP78 to HBV-associated tumor development and explore the ERS pathways involved. The results showed that increased GRP78 expression in patients with HBV-related HCC was associated with a poor prognosis within the first 2 years following diagnosis.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!