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Comparison of proteins, lethality and immunogenic compounds of Androctonus crassicauda (Olivier, 1807) (Scorpiones: Buthidae) venom obtained by different methods J. Venom. Anim. Toxins incl. Trop. Dis.
Ozkan,O.; Kar,S.; Güven,E.; Ergun,G..
Scorpions are venomous arthropods of the class Arachnida and are considered relatives of spiders, ticks and mites. There are approximately 1,500 species of scorpions worldwide, which are characterized by an elongated body and a segmented tail that ends in a venomous stinger. No specific treatment is available for scorpion envenomation, except for the use of antivenom. The current study aimed at comparing protein content and lethality of Androctonus crassicauda venom extracted by two different methods (electric stimulation and maceration of telsons). The LD50 calculated by probit analysis was 1.1mg/kg for venom obtained by electric stimulation and 39.19mg/kg for venom obtained by maceration of telsons. In the electrophoretic analysis, protein bands of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venoms; Androctonus crassicauda; Gland maceration; Electric stimulation; Immunogenicity; Lethality.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000400013
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Comparison between two methods of scorpion venom milking in Morocco J. Venom. Anim. Toxins incl. Trop. Dis.
Oukkache,Naoual; Chgoury,Fatima; Lalaoui,Mekki; Cano,Alejandro Alagón; Ghalim,Noreddine.
Background The present study compared two methods used successfully in a large-scale program for the collection of scorpion venoms, namely the milking of adult scorpions via manual and electrical stimulation. Results Our immunobiochemical characterizations clearly demonstrate that regularly applied electrical stimulation obtains scorpion venom more easily and, most importantly, in greater quantity. Qualitatively, the electrically collected venom showed lack of hemolymph contaminants such as hemocyanin. In contrast, manual obtainment of venom subjects scorpions to maximal trauma, leading to hemocyanin secretion. Our study highlighted the importance of reducing scorpion trauma during venom milking. Conclusions In conclusion, to produce high quality antivenom...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venoms; Manual stimulation; Electrical stimulation; Antivenom; Lethality.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992013000100303
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Resistance of cervical adenocarcinoma cells (HeLa) to venom from the scorpion Centruroides limpidus limpidus J. Venom. Anim. Toxins incl. Trop. Dis.
Contreras-Ortiz,José María Eloy; Vázquez-Chagoyán,Juan Carlos; Martínez-Castañeda,José Simón; Estrada-Franco,José Guillermo; Aparicio-Burgos,José Esteban; Acosta-Dibarrat,Jorge; Barbabosa-Pliego,Alberto.
Background : The venom of Centruroides limpidus limpidus (Cll) is a mixture of pharmacologically active principles. The most important of these are toxic proteins that interact both selectively and specifically with different cellular targets such as ion channels. Recently, anticancer properties of the venom from other scorpion species have been described. Studies in vitro have shown that scorpion venom induces cell death, inhibits proliferation and triggers the apoptotic pathway in different cancer cell lines. Herein, after treating human cervical adenocarcinoma (HeLa) cells with Cll crude venom, their cytotoxic activity and apoptosis induction were assessed. Results : Cll crude venom induced cell death in normal macrophages in a dose-dependent manner....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venoms; Cytotoxic tests; Apoptosis; HeLa cells; Anticancer agents; Centruroides toxins.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992013000100311
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Protective effects of the antioxidant Ginkgo biloba extract and the protease inhibitor aprotinin against Leiurus quinquestriatus venom-induced tissue damage in rats J. Venom. Anim. Toxins incl. Trop. Dis.
Fatani,A. J.; Al-Zuhair,H. A.; Yaquob,H. I.; Abdel-Fattah,A. A.; El-Sayed,M. I.; El-Sayed,F. A..
Oxidative stress and proteases have been implicated in several diseases and extensive evidence indicates that antioxidants and protease inhibitors help prevent organ functional damage. Leiurus quinquestriatus (LQQ) scorpion venom causes cellular injuries that may lead to multiple organ failure. Thus, the capability of the antioxidant "natural standardized extract of Gingko biloba leaves (Gin, EGb 761)" and the non-selective protease inhibitor, aprotinin, in ameliorating venom-induced biochemical alterations indicative of cellular injury and oxidative stress was studied to determine their effectiveness in protecting rats from venom-evoked cellular damages. Thus, in this study, rats were treated with LQQ venom (0.3mg.kg-1, subcutaneously) alone or after Gin...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leiurusquinquestriatus; Ginkgo; Aprotinin; Scorpion venoms.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000200008
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Perinatal effects of scorpion venoms: maternal and offspring development J. Venom. Anim. Toxins incl. Trop. Dis.
Dorce,Ana Leticia Coronado; Martins,Adriana do Nascimento; Dorce,Valquiria Abrão Coronado; Nencioni,Ana Leonor Abrahão.
Abstract Scorpion envenomation is a public health problem, especially in tropical and subtropical countries. Considering the high incidence of scorpionism in some areas, pregnant women and nursing mothers may be possible victims. Scorpion stings alter the release of neurotransmitters and some cytokines. These mediators act as organizers and programmers in the adequate formation of the nerves, and non-physiological concentrations of them during the brain organization originate disorders and diseases that can appear later in the life of the individual. Despite the importance of this subject, there are only a few studies showing the effects of scorpion venom on maternal reproductive development, in the morphology and physical and behavioral development of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venoms; Pregnancy; Lactation; Reproductive development; Perinatal development.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100210
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Effects of atropine and propranolol on lung inflammation in experimental envenomation: comparison of two buthidae venoms J. Venom. Anim. Toxins incl. Trop. Dis.
Saidi,Hadjer; Adi-Bessalem,Sonia; Hammoudi-Triki,Djelila; Laraba-Djebari,Fatima.
Background Previous works had shown that scorpion venom induced neurotransmitter elevation and an inflammatory response associated with various anatomo-pathological modifications. The most dangerous scorpions species in Algeria responsible for these effects are Androctonus australis hector (Aah) and Androctonus amoreuxi (Aam). Results Comparison of the physiopathological effects induced by the two venoms showed differences in the kinetic of cytokine release and in lung injury. The lung edema was only observed in response to Aah venom and it was correlated with cell infiltration. In order to better understand the involved mechanism in inflammatory response, we used two antagonists, atropine (non-selective muscarinic antagonist) and propranolol (β adrenergic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venoms; Cytokines; Lung inflammation; Acetylcholine; Atropine; Propranolol.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992013000100305
Registros recuperados: 6
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