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Applications of basophil activation test in paediatric allergic diseases.
World Allergy Organ J
December 2024
Department of Pediatrics, Pediatric Allergy and Pulmonology Unit, University of Chieti-Pescara, Chieti, Italy.
Basophilic granulocytes, containing and releasing histamine after a specific allergy stimulation, are directly involved in IgE-mediated allergic reactions. CD63 is a transmembrane protein of secretory lysosomes of basophils and its upregulation is related with the release of histamine to the extracellular space during IgE-mediated allergic reactions. Basophil activation test (BAT) measures the activation of circulating basophils upon the stimulation of living blood cells with specific allergens.
View Article and Find Full Text PDFVenom from Spiders Collected in Southeastern and Northeastern Brazilian Regions Cause Hemotoxic Effects on Human Blood Components.
Toxins (Basel)
December 2024
Molecular Toxinology Lab, Research and Development Department, Ezequiel Dias Foundation-FUNED, Belo Horizonte 30510-010, MG, Brazil.
Spiders of the genus represent a public health problem in Brazil due to the severity of the cutaneous and systemic effects that may result from their bite. In the systemic form of loxoscelism, hemolytic anemia, thrombocytopenia, and disseminated intravascular coagulation can occur. Despite the seriousness of accidents, the venom of some species has not yet been properly characterized considering these hemotoxic effects, such as that of , , and .
View Article and Find Full Text PDF[Research progress in mastoparans].
Sheng Wu Gong Cheng Xue Bao
December 2024
College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
Mastoparans (MP), a class of α-helix cationic insect-derived antimicrobial peptides, have a broad spectrum of biological activities including inhibiting bacteria, fungi, viruses, and parasites. Amino acid substitution, peptide modification, peptide chain cyclization, and dosage form modification can enhance the biological activities and target and reduce the toxicity of mastoparans. In this review, we summarize the structure, biological function and modification methods of mastoparans, and prospect the development of antibacterial drugs based on mastoparans, so as to provide reference for the research of mastoparans as a new antibacterial drug.
View Article and Find Full Text PDFUnveiling Diversity and Function: Venom-Associated Microbes in Two Spiders, Heteropoda venatoria and Chilobrachys guangxiensis.
Microb Ecol
December 2024
Hebei Basic Science Center for Biotic Interaction, Hebei University, Baoding, 071002, Hebei, China.
Spiders are natural predators of agricultural pests, primarily due to the potent venom in their venom glands. Spider venom is compositionally complex and holds research value. This study analyzes the diversity of symbiotic bacteria in spider venom glands and venom, as well as the biological activity of culturable symbiotic bacteria.
View Article and Find Full Text PDFHymenoptera venom allergy in children.
Ital J Pediatr
December 2024
Department of Health Sciences, University of Florence, Florence, 50139, Italy.
From a taxonomic point of view, Hymenoptera are subclassified into families: Apidae, including honeybees (Apis mellifera) and bumblebees (Bombus), and Vespidae, which, in turn, are divided into the subfamilies of Vespinae (wasps, including hornets, vespules, dolichovespules) and Polistinae (paper wasp). Hypersensitivity to Hymenoptera venom can be linked to immunological (IgE-mediated or non-IgE-mediated) and non-immunological mechanisms. Reactions are classified into local reactions, large local reactions, systemic reactions, toxic reactions, and unusual reactions.
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