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Transcriptional induction of the IMD signaling pathway and associated antibacterial activity in the digestive tract of cat fleas (Ctenocephalides felis).
Parasit Vectors
December 2024
Department of Biology, Georgia Southern University, 4324 Old Register Rd., Statesboro, GA, 30460, USA.
Background: Fleas are insect vectors that transmit several Gram-negative bacterial pathogens acquired by ingesting infected vertebrate blood. To combat foodborne illness, insect midgut epithelial cells are armed with efficient microbial recognition and control systems, such as the immune deficiency (IMD) pathway that regulates the expression of antimicrobial peptides (AMPs). However, despite their medical and veterinary importance, relatively little is known about the IMD signaling pathway and production of AMPs in the digestive tract of cat fleas (Ctenocephalides felis).
View Article and Find Full Text PDFYield of clinical metagenomics: insights from real-world practice for tissue infections.
EBioMedicine
December 2024
Department of Laboratory Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China; Zhejiang Key Laboratory of Clinical in Vitro Diagnostic Techniques, Hangzhou, 310003, PR China; Institute of Laboratory Medicine, Zhejiang University, Hangzhou, 310003, PR China. Electronic address:
Background: While metagenomic next-generation sequencing (mNGS) has been acknowledged as a valuable diagnostic tool for infections, its clinical validity and impact on patient management when using fresh tissue samples remains uncertain.
Methods: We conducted a retrospective cross-sectional study involving patients who underwent tissue mNGS at a tertiary hospital in China from February 2021 to February 2024, aiming to assess its ability to detect plausible pathogens and its clinical validity and impact.
Findings: A total of 520 mNGS results from 508 patients were analysed, detecting plausible pathogens in 302 (58.
Bottom-Up Proteomics Workflow for Studying Multi-organism Systems.
Methods Mol Biol
December 2024
Department of Chemistry, North Carolina State University, Raleigh, NC, USA.
In recent years, discovery proteomics has emerged as a pivotal tool in biological research, especially when studying the intricate relationships among multiple organisms. To delve deeper into these interactions, we pioneered a bottom-up proteomics workflow. Using nanoLC-MS/MS and a label-free quantification method, this work specifically examines the differential protein expression in fleas (Ctenocephalides felis felis) that have been experimentally infected with Bartonella henselae, the causative agent of cat scratch disease (CSD).
View Article and Find Full Text PDFCat scratch disease in children with nocturnal fever: A case report.
World J Clin Cases
December 2024
Department of Pediatric Intensive Care Unit, Rainbow Hospital of Xianyang (Children's Hospital of Xianyang), Xianyang 721000, Shaanxi Province, China.
Background: Cat scratch disease (CSD) is the most common human infection caused by (). The main manifestation is self-limited lymphadenopathy that primarily affects adolescents, and typically resolves without treatment within 2-4 months. However, individuals with compromised immune systems or immunodeficiency require specific antibacterial therapy following diagnosis.
View Article and Find Full Text PDFUnilateral Exudative Retinal Detachment and Uveitis Accompanied by a Large Subretinal Deposit on the Macula Secondary to Bartonella Henselae Infection.
Diagnostics (Basel)
December 2024
Beijing Children's Hospital, Capital Medical University, Beijing 100070, China.
Bartonella henselae is a Gram-negative bacillus, mainly parasitizing on cats. When a child is scratched by a cat, they may present with the disease symptoms including regional lymphadenopathy, malaise, fever, and splenomegaly, which is known as cat-scratch disease (CSD). Ocular manifestations occur in 5-10% of patients with CSD.
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