Results 51 to 60 of about 5,876 (263)

An Economic Dilemma between Molecular Weapon Systems May Explain an Arachno-Atypical Venom in Wasp Spiders (Argiope bruennichi)

Biomolecules, 2020
Spiders use venom to subdue their prey, but little is known about the diversity of venoms in different spider families. Given the limited data available for orb-weaver spiders (Araneidae), we selected the wasp spider Argiope bruennichi for detailed ...
Tim Lüddecke, Björn M. von Reumont, Frank Förster, André Billion, Thomas Timm, Günter Lochnit, Andreas Vilcinskas, Sarah Lemke   +7 more
doaj   +1 more source

Exposed weapons: A revised reconstruction of the facial anatomy and life appearance of the saber‐toothed cat Megantereon (Felidae, Machairodontinae)

The Anatomical Record, EarlyView.
Abstract Megantereon was a widespread saber‐toothed felid from the Pliocene and Pleistocene of the Old World and North America, but its rarity in the fossil record makes it complicated to restore its life appearance. Lack of complete specimens makes it necessary to combine information from fossils of different individuals to reconstruct their facial ...
Mauricio Antón, Gema Siliceo, Juan Francisco Pastor, Qigao Jiangzuo, Manuel J. Salesa   +4 more
wiley   +1 more source

Friends or Foes? Emerging Impacts of Biological Toxins [PDF]

, 2019
Toxins are substances produced from biological sources (e.g., animal, plants, microorganisms) that have deleterious effects on a living organism. Despite the obvious health concerns of being exposed to toxins, they are having substantial positive impacts
Casewell, N.R., Clark, G.C., Elliott, C.T., Harvey, A.L., Jamieson, A.G., Strong, Peter, Turner, A.D.   +6 more
core   +4 more sources

Potency Testing of Venoms and Antivenoms in Embryonated Eggs: An Ethical Alternative to Animal Testing

Toxins, 2021
Venoms are complex mixtures of biologically active molecules that impact multiple physiological systems. Manufacture of antivenoms (AVs) therefore requires potency testing using in vivo models to ensure AV efficacy. As part of ongoing research to replace
Erin E. Verity, Kathy Stewart, Kirsten Vandenberg, Chi Ong, Steven Rockman   +4 more
doaj   +1 more source

Spiritual and religious information experiences: An Annual Review of Information Science and Technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract This chapter examines the contours of the religious and spiritual information experiences subfield through a review and content analysis of selected contributions from the past two decades in both information science and related fields. The research question that guides this review is: How have spirituality and religion been conceptualized in ...
Nadia Caidi, Pranay Nangia, Hugh Samson, Cansu Ekmekcioglu, Michael Olsson   +4 more
wiley   +1 more source

Are ticks venomous animals? [PDF]

, 2017
[Introduction]: As an ecological adaptation venoms have evolved independently in several species of Metazoa. As haematophagous arthropods ticks are mainly considered as ectoparasites due to directly feeding on the skin of animal hosts. Ticks are of major
Cabezas-Cruz, Alejandro, Valdés, James J.   +1 more
core   +1 more source

Spider venom peptides as potential drug candidates due to their anticancer and antinociceptive activities

Journal of Venomous Animals and Toxins including Tropical Diseases
Spider venoms are known to contain proteins and polypeptides that perform various functions including antimicrobial, neurotoxic, analgesic, cytotoxic, necrotic, and hemagglutinic activities.
Ting Wu, Meng Wang, Wenfang Wu, Qianxuan Luo, Liping Jiang, Huai Tao, Meichun Deng   +6 more
doaj   +1 more source

Phospholipase D toxins of brown spider venom convert lysophosphatidylcholine and sphingomyelin to cyclic phosphates. [PDF]

PLoS ONE, 2013
Venoms of brown spiders in the genus Loxosceles contain phospholipase D enzyme toxins that can cause severe dermonecrosis and even death in humans.
Daniel M Lajoie, Pamela A Zobel-Thropp, Vlad K Kumirov, Vahe Bandarian, Greta J Binford, Matthew H J Cordes   +5 more
doaj   +1 more source

Neuroactive venom compounds obtained from Phlogiellus bundokalbo as potential leads for neurodegenerative diseases: insights on their acetylcholinesterase and beta-secretase inhibitory activities in vitro

Journal of Venomous Animals and Toxins including Tropical Diseases, 2021
Background Spider venom is a rich cocktail of neuroactive compounds designed to prey capture and defense against predators that act on neuronal membrane proteins, in particular, acetylcholinesterases (AChE) that regulate synaptic transmission through ...
Simon Miguel M. Lopez, Jeremey S. Aguilar, Jerene Bashia B. Fernandez, Angelic Gayle J. Lao, Mitzi Rain R. Estrella, Mark Kevin P. Devanadera, Cydee Marie V. Ramones, Aaron Joseph L. Villaraza, Leonardo A. Guevarra Jr., Myla R. Santiago-Bautista, Librado A. Santiago   +10 more
doaj   +1 more source

Gene and Genome Duplication in Spiders

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
In chelicerates whole genome duplications (WGDs) were identified in distinct groups. While there is evidence that Xiphosurans/horseshoe crabs had three rounds of WGD and arachnopulmonates (e.g. spiders and scorpions) had one WGD, in many other arachnid groups no WGD was identified.
Chetan Munegowda, Matthias Pechmann, Nikola‐Michael Prpic‐Schäper, Natascha Turetzek   +3 more
wiley   +1 more source