Injuries caused by brown spiders (Loxosceles genus) are associated with dermonecrotic lesions with gravitational spreading and systemic manifestations. The venom has a complex composition containing many different toxins, of which metalloproteases have been described in many different species of this genus. These toxins may degrade extracellular matrix constituents acting as a spreading factor....

a faunistic review is given on the iranian medically important spiders of two genera loxosceles and latrodectus. latrodectus cinctus blackwall, 1865 is reported for the first time from iran (and for the second time from asia) and is replaced with the previous erroneous reports of l. hasseltii thorell, 1870. the following species are reported for the first time from the listed provinces: loxosce...

A new record of Loxosceles rufescens (Dufour, 1820) (Araneae, Sicariidae) from Eastern India is discussed herein. This paper extends the distribution L. rufencens Western to India. It was sampled wild habitat area inside campus Berhampur University, Ganjam, Odisha,

Venoms of brown spiders in the genus Loxosceles contain phospholipase D enzyme toxins that can cause severe dermonecrosis and even death in humans. These toxins cleave the substrates sphingomyelin and lysophosphatidylcholine in mammalian tissues, releasing the choline head group. The other products of substrate cleavage have previously been reported to be monoester phospholipids, which would re...

Our goal was to recreate a passive hemagglutination inhibition (PHAI) test to diagnose brown recluse spider (BRS; Loxosceles reclusa) bite envenomation for treatment trials. Guinea pigs received intradermal injections of concentrated spider venom from the following species: Loxosceles reclusa, Argiope aurantia, Argiope trifasciata, Phidippus audax, and Lycosa frondicola. Skin lesion exudate was...

Se dan a conocer nuevos registros de Loxosceles pallalla para la Región Coquimbo en base dos machos recolectados ambientes naturales. discute acerca distribución y endemicidad especie Chile y, además, se entrega una breve descripción facilitar el reconocimiento datos su historia natural.

loxosceles rufescens , commonly known as the mediterranean recluse or mediterranean fiddle-back spider is recorded from iran for the first time. the genus loxosceles contains 103 accepted species, two of them (including l. rufescens ) are cosmopolitan. all loxosceles species tested so far possess necrotic venoms, which is a unique characteristic among the order araneae. considering this charact...

Silk has enormous potential as a next-generation material: it is a biopolymer spun from protein at ambient temperature and pressure, and the best spider silks are as strong as steel and tougher than Kevlar. Because of its green production, mechanical robustness, and biocompatibility, silk has been studied for use in a range of engineering and biomedical applications. However, despite exciting r...