Toxins And Enzymes
Mostrando 1-12 de 70 artigos, teses e dissertações.
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1. Proteome of fraction from Tityus serrulatus venom reveals new enzymes and toxins
Abstract Background: Tityus serrulatus venom (Ts venom) is a complex mixture of several compounds with biotechnological and therapeutical potentials, which highlights the importance of the identification and characterization of these components. Although a considerable number of studies have been dedicated to the characterization of this complex cocktail, t
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 18/04/2019
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2. Deep sequencing analysis of toad Rhinella schneideri skin glands and partial biochemical characterization of its cutaneous secretion
Abstract Background: Animal poisons and venoms are sources of biomolecules naturally selected. Rhinella schneideri toads are widespread in the whole Brazilian territory and they have poison glands and mucous gland. Recently, protein from toads’ secretion has gaining attention. Frog skin is widely known to present great number of host defense peptides and
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 17/12/2018
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3. In vitro characterization of jellyfish venom fibrin(ogen)olytic enzymes from Nemopilema nomurai
Abstract Background: Because jellyfish are capable of provoking envenomation in humans, they are considered hazardous organisms. Although the effects of their toxins are a matter of concern, information on the venom components, biological activity and pathological mechanisms are still scarce. Therefore, the aim of the present study was to investigate a seri
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 08/02/2018
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4. Alpha-type phospholipase A2 inhibitors from snake blood
Abstract It is of popular and scientific knowledge that toxins from snake venom (among them the PLA2 and myotoxins) are neutralized by various compounds, such as antibodies and proteins purified from animal blood. Venomous and nonvenomous snakes have PLA2 inhibitory proteins, called PLIs, in their blood serum. One hypothesis that could explain the presence o
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 27/04/2017
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5. Arthropod venom Hyaluronidases: biochemical properties and potential applications in medicine and biotechnology
AbstractHyaluronidases are enzymes that mainly degrade hyaluronan, the major glycosaminoglycan of the interstitial matrix. They are involved in several pathological and physiological activities including fertilization, wound healing, embryogenesis, angiogenesis, diffusion of toxins and drugs, metastasis, pneumonia, sepsis, bacteremia, meningitis, inflammatio
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 10/11/2015
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6. Purification procedure for the isolation of a P-I metalloprotease and an acidic phospholipase A 2 fromBothrops atrox snake venom
Background Snake venoms are complex mixtures of inorganic and organic components, mainly proteins and peptides. Standardization of methods for isolating bioactive molecules from snake venoms is extremely difficult due to the complex and highly variable composition of venoms, which can be influenced by factors such as age and geographic location of the specim
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 29/09/2015
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7. Infiltrated plaques resulting from an injury caused by the common octopus (Octopus vulgaris): a case report
Several species of octopus are considered venomous due to toxins present in the glands connected to their “beak”, which may be associated with hunt and kill of prey. Herein, we report an accident involving a common octopus (Octopus vulgaris) that injured an instructor during a practical biology lesson and provoked an inflamed infiltrated plaque on the ha
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 02/12/2014
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8. Hepatotoxicity and oxidative stress induced byNaja haje crude venom
Background Snake venoms are synthesized and stored in venom glands. Most venoms are complex mixtures of several proteins, peptides, enzymes, toxins and non-protein components. In the present study, we investigated the oxidative stress and apoptosis in rat liver cells provoked by Naja haje crude injection (LD50) after four hours.Methods Wistar rats were rando
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 02/10/2014
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9. Molecular cloning of a hyaluronidase from Bothrops pauloensis venom gland
Background Hyaluronate is one of the major components of extracellular matrix from vertebrates whose breakdown is catalyzed by the enzyme hyaluronidase. These enzymes are widely described in snake venoms, in which they facilitate the spreading of the main toxins in the victim’s body during the envenoming. Snake venoms also present some variants (hyaluron
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 05/08/2014
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10. Caracterização funcional e estrutural de uma nova fosfolipase A2 ácida de Bothrops moojeni / Functional and structural characterization of a new acidic phospholipase A2 from Bothrops moojeni
The phospholipase A2 (PLA2s) are enzymes that induce various pharmacological effects and usually correspond to a higher percentage of the protein content of snake venoms. Thus, isolation, biochemical, functional and structural characterization of PLA2s may generate important information for a better understanding of the pharmacological effects and toxicity i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/01/2012
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11. Virulence potential and antibiotic susceptibility pattern of motile aeromonads associated with freshwater ornamental fish culture systems: a possible threat to public health
Aeromonas spp. are ubiquitous aquatic organisms, associated with multitude of diseases in several species of animals, including fishes and humans. In the present study, water samples from two ornamental fish culture systems were analyzed for the presence of Aeromonas. Nutrient agar was used for Aeromonas isolation, and colonies (60 No) were identified throug
Brazilian Journal of Microbiology. Publicado em: 2012-06
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12. Identificação do perfil de expressão dos splicings alternativos dos genes das hialuronidases em adenocarcinoma de próstata / Study of genetic polymorphism in children: searching for susceptibility genes and haplotypes
Hyaluronic acid (HA) is a component of the extracellular matrix that hydrates and maintains the osmotic balance of tissues. HA concentration is elevated in several cancers including prostate. Hyaluronidases (HAases) are a family of enzymes related to the spread of bacterial infections, toxins of venoms and probably cancer progression. Small fragments of HA a
Publicado em: 2008