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Cañas CA, Castaño-Valencia S, Castro-Herrera F. The Colombian bushmasters Lachesis acrochorda (García, 1896) and Lachesis muta (Linnaeus, 1766): Snake species, venoms, envenomation, and its management. Toxicon 2023; 230:107152. [PMID: 37178796 DOI: 10.1016/j.toxicon.2023.107152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/02/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
In Colombia, there are two species of bushmaster snakes, Lachesis acrochorda, which is distributed mainly in the west of the country (in the Choco region), and Lachesis muta in the southeast (in the Amazon and Orinoquia region), whose presence has been reduced due to the destruction of their habitats. Captive maintenance is challenging, making it difficult to obtain their venom for study and antivenom manufacturing. They are the largest vipers in the world. The occurrence of human envenomation is quite rare, but when it occurs, it is associated with high mortality. Bushmaster venom is necrotizing, hemorrhagic, myotoxic, hemolytic, and cardiovascular depressant. Due to the presence of bradycardia, hypotension, emesis, and diarrhea in some patients (Lachesis syndrome), the possibility of a vagal or cholinergic effect is raised. The treatment of envenomation is hindered by the scarcity of antivenom and the need to use high doses. A review of the most relevant biological and medical aspects of bushmaster snakes is presented, mainly for those occurring in Colombia, to facilitate their recognition and raise awareness about the need for special attention to improve their conservation and advance scientific knowledge, in particular, about their venom.
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Affiliation(s)
- Carlos A Cañas
- Universidad Icesi, CIRAT: Centro de Investigación en Reumatología, Autoinmunidad y Medicina Traslacional, Cali, 760031, Colombia; Fundación Valle del Lili, Departamento de Reumatología, Cali, 760026, Colombia.
| | - Santiago Castaño-Valencia
- Department of Physiological Sciences, Department of Health Sciences, Universidad del Valle. Cali 760042, Colombia; Laboratorio de Herpetología y Toxinología, Universidad del Valle. Cali 760042, Colombia
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Vera-gonzales C, Arenas-chávez CA, Ponce-soto LA, Alvarez-risco A, Del-aguila-arcentales S, Davies NM, Yáñez JA. Purification and Characterization of a Novel Factor of Crotoxin Inter-CRO (V-1), a New Phospholipase A2 Isoform from Crotalus durissus collilineatus Snake Venom Using an In Vitro Neuromuscular Preparation. Processes (Basel) 2022; 10:1428. [DOI: 10.3390/pr10071428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The fractionation of Crotalus durissus collilineatus whole venom through an HPLC chromatographic method enabled the purification of a new V-1 neurotoxin. Inter-CRO (V-1) presents similarity in its primary structure to crotoxin B (CB), suggesting another isoform of this toxin. The aim of this study was to compare V-1 to the crotoxin complex (CA/CB) and CB to elucidate aspects related to its functionality. The homogeneity of the purified protein was confirmed with a molecular mass of 1425.45 Da, further verified by mass spectrometry. The sequence of the protein showed high similarity to other viperid snake venom PLA2 proteins. The results of this study report that V-1 is an uncharacterized novel toxin with different biological activities from CB. V-1 maintained catalytic activity but presented neurotoxic activity as observed by the 2.5-fold increase in twitch tension record compared to control values on isolated muscle cells.
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Gutierres PG, Pereira DR, Vieira NL, Arantes LF, Silva NJ, Torres-Bonilla KA, Hyslop S, Morais-Zani K, Nogueira RMB, Rowan EG, Floriano RS. Action of Varespladib (LY-315920), a Phospholipase A 2 Inhibitor, on the Enzymatic, Coagulant and Haemorrhagic Activities of Lachesis muta rhombeata (South-American Bushmaster) Venom. Front Pharmacol 2022; 12:812295. [PMID: 35095526 PMCID: PMC8790531 DOI: 10.3389/fphar.2021.812295] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/09/2021] [Indexed: 01/08/2023] Open
Abstract
Varespladib (VPL) was primarily developed to treat inflammatory disturbances associated with high levels of serum phospholipase A2 (PLA2). VPL has also demonstrated to be a potential antivenom support agent to prevent PLA2-dependent effects produced by snake venoms. In this study, we examined the action of VPL on the coagulant, haemorrhagic and enzymatic activities of Lachesis muta rhombeata (South-American bushmaster) venom. Conventional colorimetric enzymatic assays were performed for PLA2, caseinolytic and esterasic activities; in vitro coagulant activities for prothrombin time (PT) and activated partial thromboplastin time (aPTT) were performed in rat citrated plasma through a quick timer coagulometer, whereas the dimensions of haemorrhagic haloes obtained after i.d. injections of venom in Wistar rats were determined using ImageJ software. Venom (1 mg/ml) exhibited accentuated enzymatic activities for proteases and PLA2in vitro, with VPL abolishing the PLA2 activity from 0.01 mM; VPL did not affect caseinolytic and esterasic activities at any tested concentrations (0.001–1 mM). In rat citrated plasma in vitro, VPL (1 mM) alone efficiently prevented the venom (1 mg/ml)-induced procoagulant disorder associated to extrinsic (PT) pathway, whereas its association with a commercial antivenom successfully prevented changes in both intrinsic (aPTT) and extrinsic (PT) pathways; commercial antivenom by itself failed to avoid the procoagulant disorders by this venom. Venom (0.5 mg/kg)-induced hemorrhagic activity was slightly reduced by VPL (1 mM) alone or combined with antivenom (antivenom:venom ratio 1:3 ‘v/w’) in rats, with antivenom alone producing no protective action on this parameter. In conclusion, VPL does not inhibit other major enzymatic groups of L. m. rhombeata venom, with its high PLA2 antagonize activity efficaciously preventing the venom-induced coagulation disturbances.
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Affiliation(s)
- Pamella G Gutierres
- Laboratory of Toxinology and Cardiovascular Research, University of Western São Paulo, Presidente Prudente, Brazil
| | - Diego R Pereira
- Laboratory of Toxinology and Cardiovascular Research, University of Western São Paulo, Presidente Prudente, Brazil
| | - Nataly L Vieira
- Laboratory of Toxinology and Cardiovascular Research, University of Western São Paulo, Presidente Prudente, Brazil
| | - Lilian F Arantes
- Graduate Program in Zootechnics, Rural Federal University of Pernambuco, Recife, Brazil
| | - Nelson J Silva
- Graduate Program in Environmental Sciences and Health, School of Medical, Pharmaceutical and Biomedical Sciences, Pontifical Catholic University of Goiás, Goiânia, Brazil
| | - Kristian A Torres-Bonilla
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, Brazil
| | - Stephen Hyslop
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, Brazil
| | | | - Rosa M B Nogueira
- Laboratory of Toxinology and Cardiovascular Research, University of Western São Paulo, Presidente Prudente, Brazil
| | - Edward G Rowan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Rafael S Floriano
- Laboratory of Toxinology and Cardiovascular Research, University of Western São Paulo, Presidente Prudente, Brazil
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Leão-Torres AG, Pires CV, Ribelato AC, Zerbinatti MC, Santarém CL, Nogueira RMB, Giometti IC, Giuffrida R, Silva EO, Gerez JR, Silva NJ, Rowan EG, Floriano RS. Protective action of N-acetyl-L-cysteine associated with a polyvalent antivenom on the envenomation induced by Lachesis muta muta (South American bushmaster) in rats. Toxicon 2021; 198:36-47. [PMID: 33915137 DOI: 10.1016/j.toxicon.2021.04.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 04/14/2021] [Accepted: 04/20/2021] [Indexed: 02/05/2023]
Abstract
In this study, we examined the potential use of N-acetyl-L-cysteine (NAC) in association with a polyvalent antivenom and as stand-alone therapy to reduce the acute local and systemic effects induced by Lachesis muta muta venom in rats. Male Wistar rats (300-350 g) were exposed to L. m. muta venom (1.5 mg/kg - i.m.) and subsequently treated with anti-Bothrops/Lachesis serum (antivenom:venom ratio 1:3 'v/w' - i.p.) and NAC (150 mg/kg - i.p.) separately or in association; the animals were monitored for 120 min to assess changes in temperature, locomotor activity, local oedema formation and the prevalence of haemorrhaging. After this time, animals were anesthetized in order to collect blood samples through intracardiac puncture and then euthanized for collecting tissue samples; the hematological-biochemical and histopathological analyses were performed through conventional methods. L. m. muta venom produced pronounced local oedema, subcutaneous haemorrhage and myonecrosis, with both antivenom and NAC successfully reducing the extent of the myonecrotic lesion when individually administered; their association also prevented the occurrence of subcutaneous haemorrhage. Venom-induced creatine kinase (CK) release was significantly prevented by NAC alone or in combination with antivenom; NAC alone failed to reduce the release of hepatotoxic (alanine aminotransferase) and nephrotoxic (creatinine) serum biomarkers induced by L. m. muta venom. Venom induced significant increase of leucocytes which was also associated with an increase of neutrophils, eosinophils and monocytes; antivenom and NAC partially reduced these alterations, with NAC alone significantly preventing the increase of eosinophils whereas neither NAC or antivenom prevented the increase in monocytes. Venom did not induce changes in the erythrogram parameters. In the absence of a suitable antivenom, NAC has the potential to reduce a number of local and systemic effects caused by L. m. muta venom.
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Affiliation(s)
- Aline G Leão-Torres
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Carina V Pires
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Amanda C Ribelato
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Maria C Zerbinatti
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Cecília L Santarém
- Graduate Program in Animal Science, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Rosa M B Nogueira
- Graduate Program in Animal Science, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Inês C Giometti
- Graduate Program in Animal Science, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Rogério Giuffrida
- Graduate Program in Animal Science, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Elisangela O Silva
- Laboratory of Pathological Anatomy, Veterinary Hospital, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, 19067-175, Presidente Prudente, SP, Brazil
| | - Juliana R Gerez
- Department of Histology, State University of Londrina, Rodovia Celso Garcia Cid Km 380, 86057-970, Londrina, PR, Brazil
| | - Nelson J Silva
- Graduate Program in Environmental Sciences and Health, School of Medical, Pharmaceutical and Biomedical Sciences, Pontifical Catholic University of Goiás (PUC Goiás), Rua 232, 128, 74605-140, Goiânia, GO, Brazil
| | - Edward G Rowan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, G4 0RE, Glasgow, UK
| | - Rafael S Floriano
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil.
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Ferrari CZ, Ribeiro R, Lima AM, Soares AM, Cavalcante WLG, Vieira LB. Gyroxin, a toxin from Crotalus durissus terrificus snake venom, induces a calcium dependent increase in glutamate release in mice brain cortical synaptosomes. Neuropeptides 2020; 83:102081. [PMID: 32839009 DOI: 10.1016/j.npep.2020.102081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/10/2020] [Accepted: 08/10/2020] [Indexed: 01/09/2023]
Abstract
Gyroxin is a thrombin-like toxin obtained from the venom of the South American rattlesnake, Crotalus durissus terrificus. Literature has reported "gyroxin syndrome" characterized, in mice, as series of aberrant motor behavior, known as barrel rotation, mainly after intraperitoneal administration. Despites several studies, a physiological mechanism of "gyroxin syndrome" are still not completely understood. In this context, alterations on the central nervous system (CNS), especially causing neurotoxic events, are pointed out as likely candidates. Then, we decided to investigate whether gyroxin induces alterations in glutamate release, one of the most important neurotransmitter involved in neurotoxicity. For that, we performed all experiments, in vitro, using a model of mice brain cortical synaptosomes. Notably, our results indicate that the administration of gyroxin on purified presynaptic brain cortical terminals resulted in an extracellular Ca2+- dependent raise in glutamate release. Indeed, our results also showed that gyroxin increases intrasynaptosomal calcium (Ca2+) levels through acting on voltage gated calcium channels (VGCC), specifically N and P/Q subtypes. Moreover, our data show that gyroxin increases exocytosis rate. Interestingly, these data suggest that gyroxin might induce neurotoxicity by increasing glutamate levels. However, future investigations are needed in order to elucidate the nature of the following events.
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Affiliation(s)
- C Z Ferrari
- Department of Pharmacology, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - R Ribeiro
- Department of Pharmacology, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - A M Lima
- Laboratório de Biotecnologia de Proteínas e Compostos Bioativos da Amazônia Ocidental, LaBioProt, Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia e Universidade Federal de Rondônia, UNIR, Porto Velho, RO, Brazil
| | - A M Soares
- Laboratório de Biotecnologia de Proteínas e Compostos Bioativos da Amazônia Ocidental, LaBioProt, Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia e Universidade Federal de Rondônia, UNIR, Porto Velho, RO, Brazil; Centro Universitário São Lucas, UniSL, Porto Velho, RO, Brazil
| | - W L G Cavalcante
- Department of Pharmacology, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
| | - L B Vieira
- Department of Pharmacology, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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Kadi-Saci A, Laraba-Djebari F. Purification and characterization of a thrombin-like enzyme isolated from Vipera lebetina venom: its interaction with platelet receptor. Blood Coagul Fibrinolysis 2020; 31:1-10. [PMID: 31764002 DOI: 10.1097/MBC.0000000000000856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
: Snake venoms contain various molecules that can be used as tools in the diagnosis and in the treatment of hemostatic disorders. This study reports the isolation and functional characterization of a new thrombin-like enzyme and its role in the modulation of platelet aggregation and coagulation. The molecule was purified by gel filtration, anion exchange chromatography and reverse-phase-HPLC on C8 column; its molecular weight was determined. Natural and synthetic substrates were used to evaluate its enzymatic activities. The fibrinogenolytic activity was tested electrophoretically and by reverse-phase-HPLC on C18 column. Otherwise, the effect on blood coagulation and deficient plasma factors were also evaluated. The mechanism by which a thrombin-like enzyme VLCV (thrombin-like enzyme)-induced platelet aggregation was explored in presence of ticlopidin, clopidogrel and aspirin. VLCV (45 kDa) isolated from Vipera lebetina as a thrombin-like enzyme seems to be able to modulate platelet function. This enzyme showed an amidolytic activity by hydrolyzing the chromogenic-specific substrate of thrombin and the α-chain of fibrinogen. It is also able to clot human plasma and the deficient human plasma in factor X, suggesting that it is involved in the intrinsic and common pathways. The aggregating effect of VLCV is more sensitive to ticlopidine than to the clopidogrel suggesting the involvement of ADP/P2Y12/PI3K pathway. VLCV seems to be able to promote human platelet aggregation suggesting an interaction between P2Y12 and PAR1. Due to its ability to replace the missing factor X and its proaggregating activity, VLCV could be used as molecular tool to better understand the hemostasis mechanism.
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Torres-Huaco FD, Maruñak S, Teibler P, Bustillo S, Acosta de Pérez O, Leiva LC, Ponce-Soto LA, Marangoni S. Local and systemic effects of BtaMP-1, a new weakly hemorrhagic Snake Venom Metalloproteinase purified from Bothriopsis taeniata Snake Venom. Int J Biol Macromol 2019; 141:1044-1054. [PMID: 31494155 DOI: 10.1016/j.ijbiomac.2019.09.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 08/16/2019] [Accepted: 09/04/2019] [Indexed: 01/07/2023]
Abstract
A new weak hemorrhagic metalloproteinase named BtaMP-1 was purified from Bothriopsis taeniata snake venom by molecular exclusion followed by anion exchange chromatographies. This protein showed a molecular mass of 25,968.16 Da and is composed of 218 amino acid residues. The multiple alignments of its partial amino acid sequence showed high structural identity with other P-I class SVMP. BtaMP-1 showed caseinolytic activity that was enhanced by Ca2+ ion, completely inhibited by chelating and reducing agents and can be classified as an α-fibrinogenolytic enzyme. Locally, BtaMP-1 induces hemorrhage and edema, but not myotoxicity. These findings were confirmed by histological analysis of mouse gastrocnemius muscle. "In vitro" studies suggest that BtaMP-1 induce cytotoxicity in myoblast C2C12 but not in the myotubes cell line. BtaMP-1 induced systemic alterations in mice with one MHD and two hours exposure; histological analysis of lungs showed hemorrhagic areas, congestion, and increase the thickness of alveolar septum. Also, this protein induced mild effects on kidney and disruption of coagulation by depletion of fibrinogen plasma levels. This work provides insights into the importance of BtaMP-1 biological effects in envenomation by Bothropsis taeniata snake venom and providing further evidence to understand the role of P-I class SVMP in ophidian envenomation.
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Affiliation(s)
- Frank Denis Torres-Huaco
- Department of Biochemistry, Institute of Biology, University of Campinas (UNICAMP), PO Box 6109, CEP 13083-970 Campinas, SP, Brazil; Universidad Continental, Av. Los Incas, ZIP 4002 Arequipa, Peru.
| | - Silvana Maruñak
- Laboratory of Pharmacology, Faculty of Veterinary Science, National Northeastern University (UNNE), Argentina
| | - Pamela Teibler
- Laboratory of Pharmacology, Faculty of Veterinary Science, National Northeastern University (UNNE), Argentina
| | - Soledad Bustillo
- Protein Research Laboratory (LabInPro), Faculty of Natural Sciences and Surveying (FACENA), National Northeastern University (UNNE), Corrientes 3400, Argentina
| | - Ofelia Acosta de Pérez
- Laboratory of Pharmacology, Faculty of Veterinary Science, National Northeastern University (UNNE), Argentina
| | - Laura Cristina Leiva
- Protein Research Laboratory (LabInPro), Faculty of Natural Sciences and Surveying (FACENA), National Northeastern University (UNNE), Corrientes 3400, Argentina
| | - Luis Alberto Ponce-Soto
- Department of Biochemistry, Institute of Biology, University of Campinas (UNICAMP), PO Box 6109, CEP 13083-970 Campinas, SP, Brazil
| | - Sergio Marangoni
- Department of Biochemistry, Institute of Biology, University of Campinas (UNICAMP), PO Box 6109, CEP 13083-970 Campinas, SP, Brazil
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Wiezel GA, Bordon KC, Silva RR, Gomes MS, Cabral H, Rodrigues VM, Ueberheide B, Arantes EC. Subproteome of Lachesis muta rhombeata venom and preliminary studies on LmrSP-4, a novel snake venom serine proteinase. J Venom Anim Toxins Incl Trop Dis 2019; 25:e147018. [PMID: 31131000 PMCID: PMC6521711 DOI: 10.1590/1678-9199-jvatitd-1470-18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 10/02/2018] [Indexed: 11/22/2022] Open
Abstract
Background: Lachesis muta rhombeata is one of the venomous snakes of
medical importance in Brazil whose envenoming is characterized by local and
systemic effects which may produce even shock and death. Its venom is mainly
comprised of serine and metalloproteinases, phospholipases A2 and
bradykinin-potentiating peptides. Based on a previously reported
fractionation of L. m. rhombeata venom (LmrV), we decided
to perform a subproteome analysis of its major fraction and investigated a
novel component present in this venom. Methods: LmrV was fractionated through molecular exclusion chromatography and the main
fraction (S5) was submitted to fibrinogenolytic activity assay and
fractionated by reversed-phase chromatography. The N-terminal sequences of
the subfractions eluted from reversed-phase chromatography were determined
by automated Edman degradation. Enzyme activity of LmrSP-4 was evaluated
upon chromogenic substrates for thrombin (S-2238), plasma kallikrein
(S-2302), plasmin and streptokinase-activated plasminogen (S-2251) and
Factor Xa (S-2222) and upon fibrinogen. All assays were carried out in the
presence or absence of possible inhibitors. The fluorescence resonance
energy transfer substrate Abz-KLRSSKQ-EDDnp was used to determine the
optimal conditions for LmrSP-4 activity. Molecular mass of LmrSP-4 was
determined by MALDI-TOF and digested peptides after trypsin and Glu-C
treatments were analyzed by high resolution MS/MS using different
fragmentation modes. Results: Fraction S5 showed strong proteolytic activity upon fibrinogen. Its
fractionation by reversed-phase chromatography gave rise to 6 main fractions
(S5C1-S5C6). S5C1-S5C5 fractions correspond to serine proteinases whereas
S5C6 represents a C-type lectin. S5C4 (named LmrSP-4) had its N-terminal
determined by Edman degradation up to the 53rd amino acid residue
and was chosen for characterization studies. LmrSP-4 is a fibrinogenolytic
serine proteinase with high activity against S-2302, being inhibited by PMSF
and benzamidine, but not by 1,10-phenantroline. In addition, this enzyme
exhibited maximum activity within the pH range from neutral to basic and
between 40 and 50 °C. About 68% of the LmrSP-4 primary structure was
covered, and its molecular mass is 28,190 Da. Conclusions: Novel serine proteinase isoforms and a lectin were identified in LmrV.
Additionally, a kallikrein-like serine proteinase that might be useful as
molecular tool for investigating bradykinin-involving process was isolated
and partially characterized.
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Affiliation(s)
- Gisele A Wiezel
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - Karla Cf Bordon
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - Ronivaldo R Silva
- Institute of Biosciences, Letters and Exact Sciences, Universidade Estadual Paulista, Rua Cristóvão Colombo, 2265, 15054-000, São José do Rio Preto, SP, Brazil
| | - Mário Sr Gomes
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil.,Department of Chemical and Physical, State University of Southwest Bahia, Rua José Moreira Sobrinho, até 873 874, 45506-210, Jequié, BA, Brazil
| | - Hamilton Cabral
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - Veridiana M Rodrigues
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil
| | - Beatrix Ueberheide
- Proteomics Resource Center, New York University Langone Medical Center, 430 East 29th St., 10016, New York City, USA
| | - Eliane C Arantes
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
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Carregari VC, Rosa-Fernandes L, Baldasso P, Bydlowski SP, Marangoni S, Larsen MR, Palmisano G. Snake Venom Extracellular vesicles (SVEVs) reveal wide molecular and functional proteome diversity. Sci Rep 2018; 8:12067. [PMID: 30104604 PMCID: PMC6089973 DOI: 10.1038/s41598-018-30578-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 06/04/2018] [Indexed: 12/19/2022] Open
Abstract
Proteins constitute almost 95% of snake venom's dry weight and are produced and released by venom glands in a solubilized form during a snake bite. These proteins are responsible for inducing several pharmacological effects aiming to immobilize and initiate the pre-digestion of the prey. This study shows that proteins can be secreted and confined in snake venom extracellular vesicles (SVEVs) presenting a size distribution between 50 nm and 500 nm. SVEVs isolated from lyophilized venoms collected from four different species of snakes (Agkistrodon contortrix contortrix, Crotalus atrox, Crotalus viridis and Crotalus cerberus oreganus) were analyzed by mass spectrometry-based proteomic, which allowed the identification of proteins belonging to eight main functional protein classes such as SVMPs, serine proteinases, PLA2, LAAO, 5'nucleotidase, C-type lectin, CRISP and Disintegrin. Biochemical assays indicated that SVEVs are functionally active, showing high metalloproteinase and fibrinogenolytic activity besides being cytotoxic against HUVEC cells. Overall, this study comprehensively depicts the protein composition of SVEVs for the first time. In addition, the molecular function of some of the described proteins suggests a central role for SVEVs in the cytotoxicity of the snake venom and sheds new light in the envenomation process.
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Affiliation(s)
- Victor Corassolla Carregari
- Department of Biochemistry, Institute of Biology (IB), Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil.,GlycoProteomics Laboratory, Department of Parasitology, ICB, University of São Paulo, São Paulo, Brazil
| | - Livia Rosa-Fernandes
- GlycoProteomics Laboratory, Department of Parasitology, ICB, University of São Paulo, São Paulo, Brazil.,Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Paulo Baldasso
- Department of Biochemistry, Institute of Biology (IB), Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Sergio Paulo Bydlowski
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo Medical School (FMUSP), São Paulo, Brazil
| | - Sergio Marangoni
- Department of Biochemistry, Institute of Biology (IB), Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Martin R Larsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Giuseppe Palmisano
- GlycoProteomics Laboratory, Department of Parasitology, ICB, University of São Paulo, São Paulo, Brazil.
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Ullah A, Masood R, Ali I, Ullah K, Ali H, Akbar H, Betzel C. Thrombin-like enzymes from snake venom: Structural characterization and mechanism of action. Int J Biol Macromol 2018; 114:788-811. [PMID: 29604354 DOI: 10.1016/j.ijbiomac.2018.03.164] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/08/2018] [Accepted: 03/23/2018] [Indexed: 01/15/2023]
Abstract
Snake venom thrombin-like enzymes (SVTLEs) constitute the major portion (10-24%) of snake venom and these are the second most abundant enzymes present in the crude venom. During envenomation, these enzymes had shown prominently the various pathological effects, such as disturbance in hemostatic system, fibrinogenolysis, fibrinolysis, platelet aggregation, thrombosis, neurologic disorders, activation of coagulation factors, coagulant, procoagulant etc. These enzymes also been used as a therapeutic agent for the treatment of various diseases such as congestive heart failure, ischemic stroke, thrombotic disorders etc. Although the crystal structures of five SVTLEs are available in the Protein Data Bank (PDB), there is no single article present in the literature that has described all of them. The current work describes the structural aspects, structure-based mechanism of action, processing and inhibition of these enzymes. The sequence analysis indicates that these enzymes show a high sequence identity (57-85%) with each other and low sequence identity with trypsin (36-43%), human alpha-thrombin (29-36%) and other snake venom serine proteinases (57-85%). Three-dimensional structural analysis indicates that the loops surrounding the active site are variable both in amino acids composition and length that may convey variable substrate specificity to these enzymes. The surface charge distributions also vary in these enzymes. Docking analysis with suramin shows that this inhibitor preferably binds to the C-terminal region of these enzymes and causes the destabilization of their three-dimensional structure.
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Affiliation(s)
- Anwar Ullah
- Department of Biosciences, COMSATS Institute of Information Technology Park Road, Islamabad 45550, Pakistan.
| | - Rehana Masood
- Department of Biochemistry, Shaheed Benazir Bhutto Women University, Peshawar 25000, Pakistan
| | - Ijaz Ali
- Department of Biosciences, COMSATS Institute of Information Technology Park Road, Islamabad 45550, Pakistan
| | - Kifayat Ullah
- Department of Biosciences, COMSATS Institute of Information Technology Park Road, Islamabad 45550, Pakistan
| | - Hamid Ali
- Department of Biosciences, COMSATS Institute of Information Technology Park Road, Islamabad 45550, Pakistan
| | - Haji Akbar
- Department of Biosciences, COMSATS Institute of Information Technology Park Road, Islamabad 45550, Pakistan
| | - Christian Betzel
- Laboratory for Structural Biology of Infection and Inflammation, University of Hamburg, c/o DESY, Notkestrasse 85, 22603 Hamburg, Germany
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Dias L, Rodrigues MA, Rennó AL, Stroka A, Inoue BR, Panunto PC, Melgarejo AR, Hyslop S. Hemodynamic responses to Lachesis muta (South American bushmaster) snake venom in anesthetized rats. Toxicon 2016; 123:1-14. [DOI: 10.1016/j.toxicon.2016.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/01/2016] [Accepted: 10/04/2016] [Indexed: 11/25/2022]
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Dias L, Rodrigues MA, Inoue BR, Rodrigues RL, Rennó AL, de Souza VB, Torres-Huaco FD, Sousa NC, Stroka A, Melgarejo AR, Hyslop S. Pharmacological analysis of hemodynamic responses to Lachesis muta (South American bushmaster) snake venom in anesthetized rats. Toxicon 2016; 123:25-44. [DOI: 10.1016/j.toxicon.2016.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/01/2016] [Accepted: 10/04/2016] [Indexed: 01/23/2023]
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