Results 31 to 40 of about 4,688 (211)

The biology and evolution of spider venoms

open access: yesBiological Reviews, Volume 97, Issue 1, Page 163-178, February 2022., 2022
ABSTRACT Spiders are diverse, predatory arthropods that have inhabited Earth for around 400 million years. They are well known for their complex venom systems that are used to overpower their prey. Spider venoms contain many proteins and peptides with highly specific and potent activities suitable for biomedical or agrochemical applications, but the ...
Tim Lüddecke   +3 more
wiley   +1 more source

A new species of Loxosceles Heineken & Lowe (Araneae, Sicariidae), with updated distribution records and biogeographical comments for the species from Mexico, including a new record of Loxosceles rufescens (Dufour) [PDF]

open access: yesZooKeys, 2018
A new species of the spider genus Loxosceles Heineken & Lowe, 1832, Loxosceles malintzi sp. n., is described from the states of Puebla, Morelos and Guerrero, in the central region of Mexico.
Alejandro Valdez-Mondragón   +3 more
doaj   +2 more sources

Loxosceles Heineken & Lowe 1832

open access: yes, 2020
Genus Loxosceles Heineken & Lowe, 1832 Type species: Loxosceles citigrada Heineken & Lowe, 1832 (= Scytodes rufescens Dufour, 1820), currently Loxosceles rufescens (Dufour, 1820).Published as part of Navarro-Rodríguez, Claudia Isabel & Valdez-Mondragón,
Navarro-Rodríguez, Claudia Isabel   +1 more
core   +1 more source

Long time not seen: Expanding the records of Loxosceles amazonica (Araneae: Sicariidae) in the Amazonas state, Brazil [PDF]

open access: yesActa Amazonica, 2017
Spiders of the genus Loxosceles, commonly known as brown recluse spiders, can cause serious accidents in humans. Their venom has a powerful proteolytic and hemolytic action.
Marlus Q. ALMEIDA   +5 more
doaj   +2 more sources

On Chilean Loxosceles (Araneae: Sicariidae): first description of the males of L. surca and L. coquimbo, new records of L. laeta and three remarkable new species from coastal deserts

open access: yesEuropean Journal of Taxonomy, 2017
Loxosceles Heineken & Lowe, 1832 spiders are infamous for their medical importance, but a taxonomic picture of the genus is still far from complete. In this study, the Chilean species of Loxosceles are described and mapped.
Antonio D. Brescovit   +3 more
doaj   +1 more source

Two new Brazilian species of Loxosceles Heinecken & Lowe, 1832 with remarks on amazonica and rufescens groups (Araneae, Sicariidae)

open access: yesZooKeys, 2017
The genus Loxosceles Heinecken & Lowe, 1832 has 91 representatives in the New World. Despite medical relevancy, the taxonomy of the genus is poorly understood.
Caroline Sayuri Fukushima   +2 more
doaj   +3 more sources

Sphingomyelinase D from Loxosceles laeta Venom Induces the Expression of MMP7 in Human Keratinocytes: Contribution to Dermonecrosis. [PDF]

open access: yesPLoS ONE, 2016
Envenomation by Loxosceles spider is characterized by the development of dermonecrosis. In previous studies, we have demonstrated that increased expression/secretion of matrix metalloproteinases 2 and 9, induced by Loxosceles intermedia venom Class 2 ...
Mara A Corrêa   +4 more
doaj   +1 more source

Heterophilic antibodies in sera from individuals without loxoscelism cross-react with phospholipase D from the venom of Loxosceles and Sicarius spiders

open access: yesJournal of Venomous Animals and Toxins including Tropical Diseases, 2018
Background Loxoscelism is a severe human envenomation caused by Loxosceles spider venom. To the best of our knowledge, no study has evaluated the presence of antibodies against Loxosceles venom in loxoscelism patients without treatment with antivenom ...
Tomás Arán-Sekul   +8 more
doaj   +1 more source

Aracnidismo: Caracteres diferenciales y manifestaciones clínicas. Revisión Sistemática

open access: yesKasmera, 2022
Las arañas son artrópodos venenosos de distribución mundial, debido a su adaptabilidad y presencia en zonas tanto rurales como urbanas. Se establecieron como objetivos determinar los caracteres morfológicos más resaltantes, mencionar las características
Glenda Coromoto Velásquez Serra   +2 more
doaj   +1 more source

Primeiro registro sinantrópico de Loxosceles laeta (Nicolet, 1849) (Araneae, Sicariidae) no Município do Rio de Janeiro, Estado do Rio de Janeiro First synanthropic record of Loxosceles laeta (Nicolet, 1849) (Araneae, Sicariidae) in the municipality of Rio de Janeiro, State of Rio de Janeiro

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2009
Loxosceles laeta é a espécie de aranha-marrom de maior importância médica, causando acidentes de maior gravidade, além de apresentar hábito sinantrópico.
Adriano Lima Silveira
doaj   +1 more source

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