Results 41 to 50 of about 2,308 (193)

Sanitizing the fortress: protection of ant brood and nest material by worker antibiotics [PDF]

, 2013
Social groups are at particular risk for parasite infection, which is heightened in eusocial insects by the low genetic diversity of individuals within a colony. To combat this, adult ants have evolved a suite of defenses to protect each other, including
Graystock, P, Hughes, W O H, Lopes, J F S, Shaw, C, Tranter, C   +4 more
core   +1 more source

Imunoterapia específica com venenos de Hymenoptera: revisão sistemática [PDF]

, 2010
CONTEXT AND OBJECTIVE: The only effective treatment for patients who have severe reactions after Hymenoptera stings is venom immunotherapy. The aim of this study was to review the literature to assess the effects of venom immunotherapy among patients ...
CASTRO, Fabio Fernandes Morato, FONSECA, Luiz Augusto Marcondes, GALVÃO, Clóvis Eduardo Santos, KALIL, Jorge, WATANABE, Alexandra Sayuri   +4 more
core   +1 more source

Bioactivity of Samsum ant (Pachycondyla sennaarensis) venom against lipopolysaccharides through antioxidant and upregulation of Akt1 signaling in rats [PDF]

, 2012
BACKGROUND: This study aimed at investigating the oxidative stress ameliorating effect, lipids profile restoration, and the anti-inflammatory effect of Samsum Ant Venom (SAV) in induced endotoxemic male rats, injected with bacterial lipopolysaccharides ...
Ahmed M Isa, Hossam Ebaid, Mohamed Al-Khalifa, Saad Gadoa   +3 more
core   +1 more source

Assessing the Proteomic Activity of the Venom of the Ant Ectatomma tuberculatum (Hymenoptera: Formicidae: Ectatomminae)

Psyche: A Journal of Entomology, 2018
Ectatomma tuberculatum has one of the most toxic venoms known among ants but there is no detailed study on its characteristics. In light of this, knowing the venom’s chemical composition is of paramount importance in order to obtain information about the
Juliana Rocha da Silva, Aline Zanotelli de Souza, Carlos Priminho Pirovani, Helena Costa, Aline Silva, João Carlos Teixeira Dias, Jacques Hubert Charles Delabie, Renato Fontana   +7 more
doaj   +1 more source

Comparative venom gland transcriptome analysis of the scorpion Lychas mucronatus reveals intraspecific toxic gene diversity and new venomous components [PDF]

, 2010
Background Lychas mucronatus is one scorpion species widely distributed in Southeast Asia and southern China. Anything is hardly known about its venom components, despite the fact that it can often cause human accidents.
Zhao Ruiming, Ma Yibao, He Yawen, Di Zhiyong, Wu Yingliang, Cao Zhijian, Li Wenxin   +6 more
core   +2 more sources

Samsum ant venom modulates the immune response and redox status at the acute toxic dose in vivo [PDF]

Journal of Venomous Animals and Toxins including Tropical Diseases
Background: Ant venoms express surface molecules that participate in antigen presentation involving pro- and anti-inflammatory cytokines. This work aims to investigate the expression of MHC-II, CD80 and CD86 on the polymorphonuclear cells (PMNs) in rats
Hossam Ebaid, Bahaa Abdel-Salam, Ibrahim Alhazza, Jameel Al-Tamimi, Iftekhar Hassan, Ahmed Rady, Ashraf Mashaly, Ahmed Mahmoud, Reda Sammour   +8 more
doaj   +2 more sources

Mandible composition and properties in two selected praying mantises (Insecta, Mantodea)

The Anatomical Record, EarlyView.
Abstract Insects process their food with their cuticle‐based mouthparts. These feeding structures reflect their diversity and can, in some cases, showcase adaptations in material composition, mechanical properties, and shape to suit their specific dietary preferences.
Malo Roze, Stanislav N. Gorb, Timo Zeimet, Wencke Krings   +3 more
wiley   +1 more source

Collection and Toxicity Studies of Ant Venom

Experimental Biology and Medicine, 1964
SummaryVenom from the desert ant, Pogonomyrmex barbatus, collected by 3 different techniques has been described. The observed effects of ant venom, when delivered by the intact viable animal into human skin, indicated a material of cholinergic properties which resulted in piloerection and sweating, and the capacity of eliciting an extensive and ...
M W, WILLIAMS, C S, WILLIAMS
openaire   +2 more sources

Antifungal In Vitro Activity of Pilosulin- and Ponericin-Like Peptides from the Giant Ant Dinoponera quadriceps and Synergistic Effects with Antimycotic Drugs

Antibiotics, 2020
Venoms from ants comprise a rich source of bioactive peptides, including antimicrobial peptides. From the proteome and peptidome of the giant ant Dinoponera quadriceps venom, members of five known classes of antimicrobial peptides were disclosed (e.g ...
Hilania Valéria Dodou Lima, Carolina Sidrim de Paula Cavalcante, Gandhi Rádis-Baptista   +2 more
doaj   +1 more source

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

The Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman, Robert K. Carr, Kate Trinajstic, Zerina Johanson, Oleg A. Lebedev   +4 more
wiley   +1 more source