Antivenomics as a tool to improve the neutralizing capacity of the crotalic antivenom: a study with crotamine
Conclusions These results indicate that venomic databases and antivenomics analysis provide a useful approach for choosing the better venom mixture for antibody production and for the subsequent screening of antivenom cross-reactivity with relevant snake venom components. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Interleukin 8 (-251 T>A) polymorphism in children and teenagers infected with Helicobacter pylori
Conclusions Our findings suggest that IL8-251 A allele may be an important risk factor for the development of gastric disease when associated with H. pylori infection. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Neurological complications and death in children with dengue virus infection: report of two cases
Conclusions Retrospective studies have found that up to 4% of the patients have dengue virus infections, which leads us to believe that in endemic areas, this infection should be suspected in cases of encephalic and febrile symptoms. RT-PCR should be performed to identify cases of encephalitis caused by the dengue virus, and early interventions should be performed to attempt to reduce the morbidity and mortality of these cases. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Ergosterol isolated from the basidiomycete Pleurotus salmoneostramineus affects Trypanosoma cruzi plasma membrane and mitochondria
Conclusions The selection of naturally antiparasitic secondary metabolites in basidiomycetes, such as ergosterol, may provide potential scaffolds for drug design studies against neglected diseases. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Isolation of biologically active peptides from the venom of Japanese carpenter bee, Xylocopa appendiculata
Conclusion We found three novel biologically active peptides in the venom of X. appendiculata and analyzed their molecular functions, and compared their sequential homology to discuss their molecular diversity. Highly sensitive mass analysis plays an important role in this study. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Rattlesnake Crotalus molossus nigrescens venom induces oxidative stress on human erythrocytes
Conclusions Crotalus molossus nigrescens venom provokes hemolysis and oxidative stress, which induces methemoglobin formation, loss of protein structure and lipid peroxidation. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Preparation and neutralization efficacy of IgY antibodies raised against Deinagkistrodon acutus venom
Conclusion Anti-D. acutus venom IgY antibodies with high purity and titer were for the first time raised successfully in egg yolk of chickens immunized with D. acutus venom. They were effective in neutralizing the lethal effects, and the hemorrhagic, edema-forming and myotoxic acitivities of D. acutus venom. IgY could be an effective source to develop a treatment against snake bites in humans or animals in the future. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Strategies in ‘snake venomics’ aiming at an integrative view of compositional, functional, and immunological characteristics of venoms
Abstract This work offers a general overview on the evolving strategies for the proteomic analysis of snake venoms, and discusses how these may be combined through diverse experimental approaches with the goal of achieving a more comprehensive knowledge on the compositional, toxic, and immunological characteristics of venoms. Some recent developments in this field are summarized, highlighting how strategies have evolved from the mere cataloguing of venom components (proteomics/venomics), to a broader exploration of their immunological (antivenomics) and functional (toxicovenomics) characteristics. Altogether, the combinati...
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Protein-species quantitative venomics: looking through a crystal ball
Abstract In this paper we discuss recent significant developments in the field of venom research, specifically the emergence of top-down proteomic applications that allow achieving compositional resolution at the level of the protein species present in the venom, and the absolute quantification of the venom proteins (the term “ protein species ” is used here to refer to all the different molecular forms in which a protein can be found. Please consult the special issue of Jornal of Proteomics “ Towards deciphering proteomes via the proteoform, protein speciation, moonlighting and protein code concepts ” published ...
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

Heterologous fibrin sealant derived from snake venom: from bench to bedside – an overview
Abstract Hemostatic and adhesive agents date back to World War II, when homologous fibrin sealant came onto scene. Considering that infectious diseases can be transmitted via human blood, a new heterologous fibrin sealant was standardized in the 1990s. Its components were a serine protease (a thrombin-like enzyme) extracted from the venom of Crotalus durissus terrificus snakes and a fibrinogen-rich cryoprecipitate extracted from the blood of Bubalus bubalis buffaloes. This new bioproduct has been used as a coagulant, sealant, adhesive and recently as a candidate scaffold for mesenchymal stem cells and bone and cartilage re...
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - July 7, 2017 Category: Tropical Medicine Source Type: research

From the perception of a cluster of cases of children with microcephaly to congenital Zika syndrome in Brazil: the lessons we have learned and the challenges that lie ahead of us
Conclusion This is the first documented case of reversible atrial fibrillation precipitated by Crotalinae envenomation. In patients with pertinent risk factors for developing atrial fibrillation, physicians should be aware of the potential for this arrhythmia. Direct toxic effects of venom or structural and electrophysiological cardiovascular abnormalities may predispose snakebite patients to arrhythmia, warranting extended and attentive cardiac monitoring. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - April 27, 2017 Category: Tropical Medicine Source Type: research

Reversible atrial fibrillation following Crotalinae envenomation
Conclusion This is the first documented case of reversible atrial fibrillation precipitated by Crotalinae envenomation. In patients with pertinent risk factors for developing atrial fibrillation, physicians should be aware of the potential for this arrhythmia. Direct toxic effects of venom or structural and electrophysiological cardiovascular abnormalities may predispose snakebite patients to arrhythmia, warranting extended and attentive cardiac monitoring. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - April 27, 2017 Category: Tropical Medicine Source Type: research

A clinical trial protocol to treat massive Africanized honeybee (Apis mellifera) attack with a new apilic antivenom
Conclusions This is the first clinical trial protocol designed specifically to evaluate the preliminary efficacy and safety of a new antivenom against stings from the Africanized honeybee Apis mellifera. The results will support future studies to confirm a new treatment for massive bee attack that has a large impact on public health in the Americas. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - April 27, 2017 Category: Tropical Medicine Source Type: research

Can anti-bothropstoxin-I antibodies discriminate between Bothrops jararaca and Bothrops jararacussu venoms?
Conclusions These results show the potential of BthTx-I for producing monoclonal antibodies that differentiate between B. jararacussu and other Bothrops species venoms. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - April 27, 2017 Category: Tropical Medicine Source Type: research

Articular inflammation induced by an enzymatically-inactive Lys49 phospholipase A2: activation of endogenous phospholipases contributes to the pronociceptive effect
Conclusion These results demonstrated the multi-mediated characteristic of the articular inflammation induced by MT-II, which demonstrates its relevance as a model for arthritis mechanisms and treatment evaluation. (Source: Journal of Venomous Animals and Toxins including Tropical Diseases)
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - April 27, 2017 Category: Tropical Medicine Source Type: research