Myotoxic effects of mastoparan from Polybia paulista (Hymenoptera, Epiponini) wasp venom in mice skeletal muscle

Toxicon ◽  
2007 ◽  
Vol 50 (5) ◽  
pp. 589-599 ◽  
Author(s):  
Thalita Rocha ◽  
Bibiana Monson de Souza ◽  
Mario Sérgio Palma ◽  
Maria Alice da Cruz-Höfling
Toxins ◽  
2017 ◽  
Vol 9 (9) ◽  
pp. 259 ◽  
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Murilo Bazon ◽  
Amilcar Perez-Riverol ◽  
José dos Santos-Pinto ◽  
Luis Fernandes ◽  
Alexis Lasa ◽  
...  

Author(s):  
JFC Vinhote ◽  
AFC Torres ◽  
RT Dantas ◽  
TP Praciano ◽  
RRPPB Menezes ◽  
...  

2019 ◽  
Vol 200 ◽  
pp. 60-73 ◽  
Author(s):  
Caroline Lacerra de Souza ◽  
José Roberto Aparecido dos Santos-Pinto ◽  
Franciele Grego Esteves ◽  
Amilcar Perez-Riverol ◽  
Luís Gustavo Romani Fernandes ◽  
...  

Toxins ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 379
Author(s):  
Luís Gustavo Romani Fernandes ◽  
Amilcar Perez-Riverol ◽  
Murilo Luiz Bazon ◽  
Débora Moitinho Abram ◽  
Márcia Regina Brochetto-Braga ◽  
...  

Insect venom can cause systemic allergic reactions, including anaphylaxis. Improvements in diagnosis and venom immunotherapy (VIT) are based on a better understanding of an immunological response triggered by venom allergens. Previously, we demonstrated that the recombinant phospholipase A1 (rPoly p 1) from Polybia paulista wasp venom induces specific IgE and IgG antibodies in sensitized mice, which recognized the native allergen. Here, we addressed the T cell immune response of rPoly p 1-sensitized BALB/c mice. Cultures of splenocytes were stimulated with Polybia paulista venom extract and the proliferation of CD8+ and CD4+ T cells and the frequency of T regulatory cells (Tregs) populations were assessed by flow cytometry. Cytokines were quantified in cell culture supernatants in ELISA assays. The in vitro stimulation of T cells from sensitized mice induces a significant proliferation of CD4+ T cells, but not of CD8+ T cells. The cytokine pattern showed a high concentration of IFN-γ and IL-6, and no significant differences to IL-4, IL-1β and TGF-β1 production. In addition, the rPoly p 1 group showed a pronounced expansion of CD4+CD25+FoxP3+ and CD4+CD25-FoxP3+ Tregs. rPoly p 1 sensitization induces a Th1/Treg profile in CD4+ T cell subset, suggesting its potential use in wasp venom immunotherapy.


2015 ◽  
Vol 135 (1) ◽  
pp. 264-267.e8 ◽  
Author(s):  
José Roberto Aparecido dos Santos-Pinto ◽  
Lucilene Delazari dos Santos ◽  
Helen Andrade Arcuri ◽  
Anally Ribeiro da Silva Menegasso ◽  
Paloma Napoleão Pêgo ◽  
...  

Toxicon ◽  
2017 ◽  
Vol 137 ◽  
pp. 168-172 ◽  
Author(s):  
Juliana Freire Chagas Vinhote ◽  
Dânya Bandeira Lima ◽  
Ramon Róseo Paula Pessoa Bezerra de Menezes ◽  
Clarissa Perdigão Mello ◽  
Bibiana Monson de Souza ◽  
...  

3 Biotech ◽  
2020 ◽  
Vol 10 (5) ◽  
Author(s):  
Amilcar Perez-Riverol ◽  
Alexis Musacchio-Lasa ◽  
Luis Gustavo Romani Fernandes ◽  
Jose Roberto Aparecido dos Santos-Pinto ◽  
Franciele Grego Esteves ◽  
...  

Author(s):  
D. E. Philpott ◽  
A. Takahashi

Two month, eight month and two year old rats were treated with 10 or 20 mg/kg of E. Coli endotoxin I. P. The eight month old rats proved most resistant to the endotoxin. During fixation the aorta, carotid artery, basil arartery of the brain, coronary vessels of the heart, inner surfaces of the heart chambers, heart and skeletal muscle, lung, liver, kidney, spleen, brain, retina, trachae, intestine, salivary gland, adrenal gland and gingiva were treated with ruthenium red or alcian blue to preserve the mucopolysaccharide (MPS) coating. Five, 8 and 24 hrs of endotoxin treatment produced increasingly marked capillary damage, disappearance of the MPS coating, edema, destruction of endothelial cells and damage to the basement membrane in the liver, kidney and lung.


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