Search Results - "Domingos Possani, Lourival"
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Colombian Scorpion Centruroides margaritatus : Purification and Characterization of a Gamma Potassium Toxin with Full-Block Activity on the hERG1 Channel
Published in Toxins (08-06-2021)“…The Colombian scorpion produces a venom considered of low toxicity. Nevertheless, there are known cases of envenomation resulting in cardiovascular disorders,…”
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Transcriptomic and Proteomic Analyses Reveal the Diversity of Venom Components from the Vaejovid Scorpion Serradigitus gertschi
Published in Toxins (05-09-2018)“…To understand the diversity of scorpion venom, RNA from venomous glands from a sawfinger scorpion, , of the family Vaejovidae, was extracted and used for…”
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The Ca2+ Channel Blocker Verapamil Inhibits the In Vitro Activation and Function of T Lymphocytes: A 2022 Reappraisal
Published in Pharmaceutics (15-07-2022)“…Ca2+ channel blockers (CCBs) are commonly used to treat different cardiovascular conditions. These drugs disrupt the intracellular Ca2+ signaling network,…”
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Comparative proteomic analysis of female and male venoms from the Mexican scorpion Centruroides limpidus: Novel components found
Published in Toxicon (Oxford) (01-01-2017)“…Venom from male and female scorpions of the species Centruroides limpidus were separated by HPLC and their molecular masses determined by mass spectrometry…”
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Targeting antigens to Dec-205 on dendritic cells induces a higher immune response in chickens: Hemagglutinin of avian influenza virus example
Published in Research in veterinary science (01-04-2017)“…It is widely known that targeting a variety of antigens to the DEC-205 receptor on dendritic cells (DCs) significantly potentiate immunity. This communication…”
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Venom content and toxicity regeneration after venom gland depletion by electrostimulation in the scorpion Centruroides limpidus
Published in Toxicon (Oxford) (01-01-2019)“…The scorpion venom is a cocktail of many components. Its composition can exhibit a level of plasticity in response to different behavioral and environmental…”
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Antiseizure potential of peptides from the venom of social wasp Chartergellus communis against chemically-induced seizures
Published in Toxicon (Oxford) (30-04-2021)“…Epilepsy is one of the most common neurological diseases in the world. The objective of this research was to investigate a new peptide from the venom of the…”
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Antarease-like Zn-metalloproteases are ubiquitous in the venom of different scorpion genera
Published in Biochimica et biophysica acta (01-06-2014)“…The venoms of several scorpion species have long been associated with pancreatitis in animal models and humans. Antarease, a Zn-metalloprotease from Tityus…”
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Intraspecific variation of Centruroides sculpturatus scorpion venom from two regions of Arizona
Published in Archives of biochemistry and biophysics (15-01-2018)“…This study investigated geographic variability in the venom of Centruroides sculpturatus scorpions from different biotopes. Venom from scorpions collected from…”
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Characterization and Chemical Synthesis of Cm39 (α-KTx 4.8): A Scorpion Toxin That Inhibits Voltage-Gated K+ Channel KV1.2 and Small- and Intermediate-Conductance Ca2+-Activated K+ Channels KCa2.2 and KCa3.1
Published in Toxins (05-01-2023)“…A novel peptide, Cm39, was identified in the venom of the scorpion Centruroides margaritatus. Its primary structure was determined. It consists of 37 amino…”
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Structural and functional characterization of toxic peptides purified from the venom of the Colombian scorpion Tityus macrochirus
Published in Toxicon (Oxford) (01-11-2019)“…The soluble venom of the scorpion Tityus macrochirus was separated by chromatographic procedures and three homogeneous peptides were obtained and their primary…”
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An Alkaloid from Scorpion Venom: Chemical Structure and Synthesis
Published in Journal of natural products (Washington, D.C.) (24-08-2018)“…While most scorpion venom components identified in the past are peptidic or proteinic in nature, we report here a new alkaloid isolated from the venom of the…”
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Of Seven New K+ Channel Inhibitor Peptides of Centruroides bonito, α-KTx 2.24 Has a Picomolar Affinity for Kv1.2
Published in Toxins (15-08-2023)“…Seven new peptides denominated CboK1 to CboK7 were isolated from the venom of the Mexican scorpion Centruroides bonito and their primary structures were…”
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Unveiling the Protein Components of the Secretory-Venom Gland and Venom of the Scorpion Centruroides possanii (Buthidae) through Omic Technologies
Published in Toxins (09-08-2023)“…Centruroides possanii is a recently discovered species of “striped scorpion” found in Mexico. Certain species of Centruroides are known to be toxic to mammals,…”
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New tricks of an old pattern: structural versatility of scorpion toxins with common cysteine spacing
Published in The Journal of biological chemistry (06-04-2012)“…Scorpion venoms are a rich source of K(+) channel-blocking peptides. For the most part, they are structurally related small disulfide-rich proteins containing…”
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Characterization of two peptides isolated from the venom of social wasp Chartergellus communis (Hymenoptera: Vespidae): Influence of multiple alanine residues and C-terminal amidation on biological effects
Published in Peptides (New York, N.Y. : 1980) (01-09-2017)“…•Two peptides were characterized from the venom of the social wasp C. communis.•First time that a wasp's peptide with multiple alanines in their sequence is…”
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The new kappa-KTx 2.5 from the scorpion Opisthacanthus cayaporum
Published in Peptides (New York, N.Y. : 1980) (01-07-2011)“…► We describe the κ-KTx2.5 and show it is a blocker of hKv1.1, and hKv1.4 channels. ► CD spectra showed a predominance of α-helices at different temperatures…”
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Kv1.3 channel blockade with the Vm24 scorpion toxin attenuates the CD4+ effector memory T cell response to TCR stimulation
Published in Cell communication and signaling (14-08-2018)“…BackgroundIn T cells, the Kv1.3 and the KCa3.1 potassium channels regulate the membrane potential and calcium homeostasis. Notably, during TEM cell activation,…”
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Novel monoclonal antibody against alphaX subunit from horse CD11c/CD18 integrin
Published in Veterinary immunology and immunopathology (15-04-2015)“…The αX I-domain of the horse integrin CD11c was successfully expressed in Escherichia coli, purified, biochemically characterized and used as immunogen to…”
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Two Novel Ergtoxins, Blockers of K+-channels, Purified from the Mexican Scorpion Centruroides elegans elegans
Published in Neurochemical research (01-08-2008)“…Voltage-gated potassium channels of the ether-a-go-go related gene (ERG) family are implicated in many important cellular processes. Three such genes have been…”
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