Antivenomic approach of different Crotalus durissus collilineatus venoms
Journal of Venomous Animals and Toxins including Tropical Diseases volume 24, Article number: 34 (2018)
Our group has previously performed a proteomic study verifying that individual variations can occur among Crotalus durissus collilineatus venoms. These variations may lead to differences in venom toxicity and may result in lack of neutralization of some components by antivenom. In this way, this study aimed to evaluate the Brazilian anticrotalic serum capacity in recognizing twenty-two Crotalus durissus collilineatus venoms, as well as their fractions.
The indirect enzyme-linked immunosorbent assay (ELISA) was chosen to evaluate the efficacy of heterologous anticrotalic serum produced by Instituto Butantan (Brazil) in recognizing the twenty-two Crotalus durissus collilineatus venoms and the pool of them. Moreover, the venom pool was fractionated using reversed-phase fast protein liquid chromatography (RP-FPLC) and the obtained fractions were analyzed concerning antivenom recognition.
Evaluation of venom variability by ELISA showed that all venom samples were recognized by the Brazilian anticrotalic antivenom. However, some particular venom fractions were poorly recognized.
This study demonstrated that the Brazilian anticrotalic serum recognizes all the different twenty-two venoms of C. d. collilineatus and their fractions, although in a quantitatively different way, which may impact the effectiveness of the antivenom therapy. These results confirm the need to use a pool of venoms with the greatest possible variability in the preparation of antivenoms, in order to improve their effectiveness.
Snakebite envenoming in tropical regions is considered a serious public health problem due to its frequency and morbidity/mortality ratio, being a neglected condition belonging to the Neglected Tropical Diseases (NTD) list by World Health Organization (WHO) [1,2,3,4,5]. This kind of problem mainly affects rural workers, especially men and children from poor and developing countries [4, 6, 7]. Based on Brazilian epidemiological data (Sistema de Informações de Agravos de Notificação - SINAN, 2018), in the last decade, the number of accidents ranges from 26,000 to 30,000 per year . In respect to envenomings caused by Crotalus genus, these accidents varies from 1,700 to 2,400 registered cases per year.
The only treatment available for snakebite envenoming is antivenom (AV) serum, in other words, hyperimmune immunoglobulins obtained from animals immunized with specific venom . Therefore, more than a century after Albert Calmette’s introduction of antivenom therapy in 1895, the heterologous AV is still the unique treatment to snakebite patient recovery, although other medical practices must be also considered. For example, patients with cardiac, respiratory and renal failure should receive the AV together with emergency techniques [10, 11].
In Brazil, since 1986, with the implementation of the Programa Nacional de Controle de Acidentes Ofídicos by Ministério da Saúde, extended to other venomous animals in 1988, the production of AV was standardized. Currently, it is carried out by four institutions in the country: Instituto Vital-Brazil, Instituto Butantan, Fundação Ezequiel Dias (FUNED) and the Centro de Produção e Pesquisa de Imunobiológicos (CPPI), which are distributed by the Brazilian Ministry of Health free of charge to health institutions .
The first step of AV production is the extraction of the venoms that compose the mixture that is used as antigen. This mixture comprises venoms from different species and/or subspecies belonging to the same genus. Antigens are inoculated into horses (immunization process), followed by an exploratory bleeding (about 15–30 days after) to investigate the specific antibodies titration. If antibodies high titles are achieved, horse bleeding is performed. Then, plasma is separated and purified of active immunoglobulins (IgGs), which can be prepared in three main conformations : monovalent Fab , F(ab’)2 fragments [15, 16] and whole IgG [17, 18]. Currently in Brazil, there are five types of AV directed to snake’s envenomings: Bothrops AV (B. jararaca – 50%; B. jararacussu – 12.5%; B. neuweidi – 12.5%; B. alternatus – 12.5%; B. moojeni – 12.5%), Crotalus AV (C. d. terrificus – 50%; C. d. collilineatus – 50%), Micrurus AV (M. corallinus – 50%; M. frontalis – 50%), Bothrops-Crotalus AV (B. jararaca – 50%; B. jararacussu – 12.5%; B. neuweidi – 12.5%; B. alternatus – 12.5%; B. moojeni – 12.5%; C. d. terrificus – 50%; C. d. collilineatus – 50%) and Bothrops-Lachesis AV (B. jararaca – 50%; B. jararacussu – 12.5%; B. neuweidi – 12.5%; B. alternatus – 12.5%; B. moojeni – 12.5%; L. muta – 100%) .
Although the antivenom therapy has proven its efficacy in preventing deaths by snakebites, AV production has not been significantly modified during a century, needing some improvements regarding quality parameters . Knowing that components of venomous animals may vary according to species, genus, habitat, age, diet, among other factors, it is difficult to select venoms that will compose the antigens to be used in the AV production [19,20,21,22,23]. Thus, individual variations studies are necessary for a better understanding of envenoming, besides assisting in the development of a more effective AV. If the venom mixture used in the immunization does not present all toxins relevant to the envenoming, the AV may be less efficient, which will result in non-neutralized toxic effects and the use of additional doses of AV. This may lead to the manifestation of therapy side effects, such as anaphylactic reactions (non-IgE and IgE-mediated) and serum disease [24, 25].
AV potential can be evaluated through techniques named “Antivenomic”, that is the identification of venom components by proteomic techniques, which have their epitopes recognized by AV . So far, there are four different ways to perform antivenomics : (i) Venom and AV are mixed and the components that are recognized by the AV are precipitated. The supernatant is evaluated by reversed-phase high performance liquid chromatography (RP-HPLC) considering the chromatographic profile of the whole venom as a control ; (ii) AV is attached to an affinity matrix used for chromatography, which components eluted first or that do not interact with the matrix (i.e. are not recognized by AV), and those that bind in the matrix and are eluted later with a pH change, are analyzed by RP-HPLC and compared to the chromatographic profile of the whole venom ; (iii) Venoms are separated by two-dimensional electrophoresis, transferred to immunoblotting membranes, which are incubated with AV and the binding of antibodies in protein spots is checked . Similarly, fractions obtained in RP-HPLC from venoms are analyzed by SDS-PAGE, which are also transferred to immunoblotting membranes and the process with AV is the same ; (iv) The last technique consists of the combination of HPLC and enzyme-linked immunosorbent assay (ELISA), in order that RP-HPLC fractions eluted are applied into microplates, sensitizing them, and the ELISA method is performed using AV as the primary antibody .
Based on that, this study reports the recognition potential of the antivenom produced by Instituto Butantan (Brazil) against twenty-two C. d. collilineatus venoms and their fractions through an antivenomic approach combining liquid chromatography and ELISA methods, since intraspecific venom variations may affect the efficacy of the antidote.
Snake venoms and antivenom
Twenty-two adult specimens of C. d. collilineatus were collected in the surrounding area of Catalão – GO (18° 10′ 12” S, 47° 56′ 31” W) and kept in the Serpentarium (Universidade de São Paulo, Ribeirão Preto, SP, Brazil), accredited by Brazilian Institute of Environment and Renewable Natural Resources (IBAMA), under register number 1506748, for scientific purposes. The venoms were extracted and dried under vaccum at room temperature for 6 h and stored at − 20 °C until use. The presence of crotamine in each venom was determined using mass spectrometry and N-terminal sequencing (data already published, see Oliveira et al., 2018 ). Pooled venom was prepared by mixing equal amount of each venom.
The heterologous antivenom against Crotalus venom was kindly provided by Unidade de Farmácia do Hospital das Clínicas de Ribeirão Preto (anticrotalic serum, lot 1208195, Instituto Butantan, São Paulo, Brazil).
The venom was fractionated using a method previously described by Calvete et al. and our group [32, 33]. Briefly, the pooled venom (22 mg, 1 mg of each venom) was dispersed in 1.1 mL of 0.1% TFA (solution A) and 1% formic acid, centrifuged at 13,000 × g for 10 min at 4 °C. Fractionation was performed on a C18 column (250 × 10 mm, 5 μm particles, 300 Å, Phenomenex, Torrence, CA, USA) coupled to Fast Protein Liquid Chromatography (FPLC) system (Äkta Purifier UPC 900, GE Healthcare, Uppsala, Sweden). Protein elution was monitored by absorbance at 214 nm and eluted fractions were collected, frozen and lyophilized for further analysis.
Protein quantification of venoms was performed by 280/205 nm absorption method , while protein quantification of RP-FPLC fraction was performed in NanoDrop 2000 Microvolume Spectrophotometer (Thermo Fisher Scientific, Waltham, Massachusetts, USA), using preconfigured method Protein A280.
Immunoreactivity of antivenom against venoms and their components using ELISA
An indirect ELISA was performed. 96-well microplates (Kasvi, Curitiba, PR, Brazil) were sensitized with protein (venom or fraction – 2 μg) in 0.05 M carbonate/bicarbonate buffer, pH 9.6 (100 μL/well) and incubated for 16 h at 4 °C. As positive control, the wells were sensitized with anticrotalic serum (1:1000 in 0.05 M carbonate/bicarbonate buffer, pH 9.6) and, as negative control, no sensitized wells were used. Plates were washed three times with phosphate buffered saline (PBS) pH 7.2, blocked by adding 250 μL of PBS containing 2% (w/v) powdered milk (Molico, São Paulo, SP, Brazil) (MPBS) and incubated for 2 h at 37 °C. The plates were then washed three times with PBS-0.05% Tween (PBS-T) and three times with PBS. The plates were incubated again for 1 h at 37 °C with anticrotalic serum (1:100 in 1% MPBS). The plates were washed three times with PBS-T and three times with PBS. After that, plates were incubated with 100 μL of anti-horse polyclonal antibodies conjugated with peroxidase (IgG-HRP, A6917, Sigma-Aldrich, St. Louis, MO, USA) diluted 1:3000 in 1% MPBS. After one hour of incubation at room temperature, the plates were then washed three times with PBS-T and three times with PBS. 100 μL of OPD-H2O2 (SIGMAFAST OPD tablet, SLBM4528V, Sigma-Aldrich, St. Louis, MO, USA, diluted according to the manufacturer’s instructions) were added to each well. Finally, the plates were incubated for 15 min at room temperature for the development of color (in the dark) and the reaction was interrupted with 50 μL of 1 M H2SO4 (Merck, São Paulo, SP, Brazil). Absorbance reading was performed at 490 nm on a 96-well plate reader (Sunrise-basic Tecan, Männedorf, Switzerland). The assay was carried out in quadruplicate and the results were analyzed by GraphPad Prism 5 software (La Jolla, CA, USA), using one-way ANOVA, followed by Tukey’s post-hoc test.
Densitometry of SDS-PAGE profile of fractions
The densitometric analysis of the Tris-Tricine-SDS-PAGE (16.5%) profile of RP-FPLC fraction 0 and SDS-PAGE (12.5%) profile of RP-FPLC fractions 19, 21, 22, 35, 36, 37, 39 and 42  was performed using a gel documentation system Gel Doc™ EZ System (Bio-Rad Laboratories, Inc., California, USA) and the accompanying software Image Lab™, version 5.2.1 (Bio-Rad Laboratories, Inc., California, USA).
The commercial anticrotalic serum produced by Instituto Butantan (Brazil) was able to recognize all the twenty-two tested venoms. All tests showed high absorbance values (≥ 1.3 at 490 nm), which indicates that the AV presents high concentration of specific antibodies and/or antibodies with high affinity against the venom components (Fig. 1a).
Fractionation of the venom pool resulted in 44 fractions (Fig. 1b). The AV was also able to recognize all the fractions eluted from RP-FPLC, but the results obtained were very different among the different fractions tested, although the same mass of each fraction (2 μg) was used to sensitize the wells of the plate. The fractions 0, 35, 36 and 37 showed the lowest absorbance signals and fractions 19, 21, 22, 39 and 42 the highest absorbances (Fig. 1c). The densitometric analyses of the SDS-PAGE profiles of RP-FPLC fractions 0, 19, 21, 22, 35, 36, 37, 39 and 42 were shown in Fig. 2.
ELISA method has been shown to be a specific, cheap, simple, sensitive and fast-performing assay for detecting toxins and snake venoms [35, 36]. In the last decades, this methodology has been used for several purposes, such as determining the potency of AVs [37, 38] and detecting levels of antigens and antibodies in body fluids of patients who are victims of envenoming . Furthermore, antivenomic studies may provide information of which components of a venom can be recognized by AV. Here it is important to mention that to have an efficient neutralizing effect the AV does not need to recognize all the venom components (indeed many components can be non-toxic to humans) [40, 41]. However, based on the fact that many venom’s compounds are still unknown or do not have their effects determined, the AV producers use the whole venom to immunize animals aiming to produce specific antibodies against the most components they can. Moreover, antivenomic can indirectly show the relative immunogenicity of the venom components for immunized animals .
Considering that the AV recognizes all the tested venoms with high absorbance, we can indirectly infer that the Brazilian anticrotalic venom presents high concentration of specific antibodies and/or high affinity antibodies against C. d. collilineatus venoms. Indeed, many studies demonstrated controversial ideas in this respect [42, 43]. However, ELISA appears to correlate well with both parameters: antibodies concentration and affinity.
On the other hand, concerning venom fractions (Fig. 1b), the AV recognition varies significantly (Fig. 1c). We considered that this variation can be a result of two different factors. (1) Low immunogenicity of some toxins, which hinders the production of specific and high affinity antibodies by the horses. (2) Low abundance of some components in the venom. The fractions 0, 35, 36 and 37 were poorly recognized by the AV (mean absorbance at 490 nm of 0.38, 0.47, 0.31 and 0.46, respectively), compared to fractions 21 and 22 (mean absorbance at 490 nm of 1.37 and 1.39, respectively). According to our previous proteomic analysis , fraction 0 (do not interact with the column) represents 2.38% of the soluble venom. It presents only small peptides (< 3 kDa; Fig. 2a) and, probably, non-protein components, which explain its low immunogenicity. Fractions 35, 36 and 37 correspond to 0.24, 0.20 and 0.15% of the venom, respectively . Therefore, they are in very small proportions in the venom, justifying the low concentration of antibodies in AV. These fractions are composed by a complex mixture of toxins, mainly α (18,141 Da) and β (17,403 Da) subunits of convulxin (Figs. 2d), probably aggregated with small amounts of other toxins, such as serine proteases, 5′-nucleotidase, metalloprotease, glutathione peroxidase, carboxypeptidase, L-amino acid oxidase .
Fractions 19 to 22 (Fig 2b and c) are constituted by the different PLA2 proteoforms (crotoxin B, catalytically active) and are present in large proportions in the pooled C. d. collilineatus venom, corresponding to approximately 44% of the soluble venom , explaining its effective recognition by AV. On the other hand, fractions 39 (0.77%) and 42 (0.40%) are present in small amounts in the soluble venom, but were also very well recognized by AV (Fig. 1c). This may be justified by the fact that both are composed by toxins of high molecular masses and, consequently, with greater immunogenic potential. Nine different molecules were identified in fraction 39 , but those that are present in larger proportions (Fig. 2d) are phosphodiesterase (MM ~ 96.4 kDa) and 5′-nucleotidase (MM ~ 64 kDa). Fraction 42 also has a great diversity of molecules (13 toxins) , among them a metalloprotease (MM ~ 46 kDa), which is the toxin in the highest proportion in this fraction (Fig. 2e).
Interestingly, the unique crotamine-positive venom (number 3) was efficiently recognized by AV (Fig. 1a), but the crotamine-positive fraction (mainly fraction 2) showed only medium AV recognition (absorbance 0.73 at 490 nm) (Fig. 1c). Probably, crotamine is present in a low proportion in the mixture of venoms used for immunizing horses or it may be slightly immunogenic because of its low molecular weight (4,890 Da) . It is able to cause myotoxicity, acting on muscle fibers, depolarizing cells  and leads to extension and induction of paralysis of the hind paws of mice, since it acts by blocking potassium channels .
Boldrini-França et al. reported that crotamine was not recognized by the anticrotalic sera produced by Instituto Vital-Brazil and Instituto Butantan , which may have led to improvements in the crotalic AV production in Brazil. Due to this lack of crotamine neutralization, Teixeira-Araújo et al. established a new protocol to anticrotalic serum production by Instituto Vital-Brazil, using crotamine-positive and negative crotalic venom in the same proportion for horses immunization, which resulted in the recognition of crotamine by the new AV . While in Instituto Butantan, according to the institution, a mixture of equal amounts of C. d. terrificus and C. d. collilineatus venoms collected in different regions of Brazil is used to the antivenom production. It is worth to mention that the institution uses venoms from crotamine-negative and positive individuals and, as far as possible, from both male and female animals (Instituto Butantan). Indeed, the Brazilian Health Regulatory Agency (Agência Nacional de Vigilância Sanitária – ANVISA) recommends the use of crotamine-positive venoms for animal immunization for AV production. However, there is no standardization of crotamine percentage used in these venom mixtures. It can generate a problem, since horses can produce a weak immune response to this toxin, when immunized with low concentrations of it . Therefore, our results confirm that in the last years Instituto Butantan has improved the quality of its antivenoms, because in the past they used to employ venoms collected in crotamine-negative regions (Southeastern and Midwestern Brazil, in the states of São Paulo, Mato Grosso and Minas Gerais) , as well as, the serum produced by Instituto Vital-Brazil, as described by Teixeira-Araujo et al. . Although now AV recognizes crotamine, the low recognition of crotamine-positive fraction 2 could indicate low concentration or low affinity antibodies to crotamine in AV. Perhaps this problem can be minimized with the addition of pure crotamine in the venom mixture used for the immunization of horses, since its immunogenicity has previously been demonstrated [47, 48].
The antivenomic technique combining HPLC and ELISA used here has already been used in several other studies. Lauridsen et al. verified through this technique that South African AV was able to recognize more strongly α-neurotoxins from Naja melanoleuca venom, when compared to others African antivenons . Laustsen et al. also showed that the African antivenoms present higher titers against high molecular mass and less toxic proteins and also against α-neurotoxins, but not as much as dendrotoxins from Dendroaspis polylepis venom .
Regarding venomous sea snakes, Laustsen et al. demonstrated that the BioCSL Sea Snake Antivenom is able to bind in neurotoxins from Aipysurus laevis venom, which can be effective on the treatment of this kind of envenoming . Rey-Suárez et al. shown that the AV against the venom of Micrurus nigrocinctus is effective against the venom of M. dumerilii . This AV was also able to recognize M. clarki venom .
Although antivenomic studies performed by ELISA presents some limitations, such as not allowing quantitative analysis, this methodology contributes considerably to toxinology field, being able to determine the antigenicity of venom components, as well as their immunoreactivity .
The present work emphasizes the importance of antivenomic studies, since the venom can suffer variations due to several factors, which can change the protein expression by individual, thus, there are differences in venom composition. These venom variations may difficult the treatment of victim, due to a serum that does not recognize all the components of venom, not neutralizing them, thus reducing its effectiveness.
Snakebite envenomings are still neglected occupational diseases, which are in dire need of improved treatments. Although presenting some differences, the commercial antivenom produced by Instituto Butantan was able to recognize all the twenty-two tested venoms and their fractions, indicating that the Brazilian anticrotalic antivenom is effective in the treatment of envenomings caused by snakes of this species. Studies with antivenomic approach may reveal which components of the venom are or are not recognized by a particular AV, contributing to improve its efficacy. It makes antivenomic studies increasingly important.
Analysis of variance
Brazilian Health Regulatory Agency (Agência Nacional de Vigilância Sanitária)
Centro de Produção e Pesquisa de Imunobiológicos
Enzyme-linked immunosorbent assay
Fast protein liquid chromatography
Fundação Ezequiel Dias
High performance liquid chromatography
Brazilian Institute of Environment and Renewable Natural Resources
Anti-horse polyclonal antibodies conjugated with peroxidase
Neglected Tropical Diseases
Polyacrylamide gel electrophoresis
Phosphate buffered saline
Reversed-phase high performance liquid chromatography
Sodium dodecyl sulfate
Sistema de Informações de Agravos de Notificação
World Health Organization
Cruz LS, Vargas R, Lopes AA. Snakebite envenomation and death in the developing world. Ethn Dis. 2009;19(1 Suppl) S1-42-6.
Calvete JJ, Rodríguez Y, Quesada-Bernat S, Pla D. Toxin-resolved antivenomics-guided assessment of the immunorecognition landscape of antivenoms. Toxicon. 2018;148:107–22.
Gutiérrez JM, Pereañez JA. The need for an integrated approach in confronting snakebite envenoming in Latin America: the relevance of endogenous scientific and technological research. Vitae. 2016;23(2):103–5.
World Health Organization. Rabies and envenomings: a neglected public health issue: report of a consultative meeting. Geneva: World Health Organization; 2007.
Chippaux JP. Snakebite envenomation turns again into a neglected tropical disease! J Venom Anim Toxins incl Trop Dis. 2017;23:38. https://doi.org/10.1186/s40409-017-0127-6.
Chippaux JP. Epidemiology of envenomations by terrestrial venomous animals in Brazil based on case reporting: from obvious facts to contingencies. J Venom Anim Toxins incl Trop Dis. 2015;21:13. https://doi.org/10.1186/s40409-015-0011-1.
Chippaux JP, Akaffou MH, Allali BK, Dosso M, Massougbodji A, Barraviera B. The 6th international conference on envenomation by snakebites and scorpion stings in Africa: a crucial step for the management of envenomation. J Venom Anim Toxins incl Trop Dis. 2016;22:11. https://doi.org/10.1186/s40409-016-0062-y.
Ministério da Saúde. Acidente por animais peçonhentos – notificações registradas no sistema de informação de agravos de notificação. 2017. http://tabnet.datasus.gov.br/cgi/deftohtm.exe?sinannet/animaisp/bases/animaisbrnet.def. Acessed 25 May 18.
World Health Organization. Guidelines for the production, control and regulation of snake antivenom immunoglobulins. WHO; 2010. p. 6. http://www.who.int/biologicals/expert_committee/Antivenom_WHO_Guidelines_DJW_DEB_mn_cp.pdf.
Warrell DA. Snake bite. Lancet. 2010;375(9708):77–88.
Bochner R. Paths to the discovery of antivenom serotherapy in France. J Venom Anim Toxins incl Trop Dis. 2016;22:20. https://doi.org/10.1186/s40409-016-0074-7.
Wen FH, Monteiro WM, Silva AMM, Tambourgi DV, da Silva IM, Sampaio VS, et al. Snakebites and scorpion stings in the Brazilian Amazon: identifying research priorities for a largely neglected problem. PLoS Negl Trop Dis. 2015;9(5):e0003701.
Gutiérrez JM, León G, Burnouf T. Antivenoms for the treatment of snakebite envenomings: the road ahead. Biologicals. 2011;39(3):129–42.
Al-Abdulla I, Garnvwa JM, Rawat S, Smith DS, Landon J, Nasidi A. Formulation of a liquid ovine fab-based antivenom for the treatment of envenomation by the Nigerian carpet viper (Echis ocellatus). Toxicon. 2003;42(4):399–404.
Raw I, Guidolin R, Higashi HG, Kelen EMA. In: Keeler RF, Tu AT. Antivenins in Brazil: Preparation. In Handbook of Natural Toxins. New York: Marcel Dekker; 1991. p. 557–81.
Grandgeorge M, Véron JL, Lutsch C, Makula MF, Riffard P, Pépin S, et al. Preparation of improved F (ab’) 2 antivenoms. An example: new polyvalent anti-European vipers (equine). Toxicon. 1996;34(2):148.
Bolaños R. Antivenenos. In: Manual de Procedimientos Producción y Pruebas de Control en la Preparación de Antisueros Diftérico, Tetánico, Botulínico, Antivenenos y de la Gangrena Gaseosa. Washington, DC: Organización Panamericana de La Salud editor; 1977. p. 104–41.
Rojas G, Jiménez JM, Gutiérrez JM. Caprylic acid fractionation of hyperimmune horse plasma: description of a simple procedure for antivenom production. Toxicon. 1994;32(3):351–63.
Willemse GT. Individual variation in snake venom. Comp Biochem Physiol. 1978;61(4):553–7.
Chippaux JP, Williams V, White J. Snake venom variability: methods of study, results and interpretation. Toxicon. 1991;29(11):1279–303.
Ferreira ML, Moura-da-Silva AM, França FOS, Cardoso JL, Mota I. Toxic activities of venoms from nine Bothrops species and their correlation with lethality and necrosis. Toxicon. 1992;30(12):1603–8.
Lourenco A Jr, Zorzella Creste CF, de Barros LC, Delazari dos Santos L, Pimenta DC, Barraviera B, et al. Individual venom profiling of Crotalus durissus terrificus specimens from a geographically limited region: crotamine assessment and captivity evaluation on the biological activities. Toxicon. 2013;69:75–81.
Pucca MB, Amorim FG, Cerni FA, Bordon KC, Cardoso IA, Anjolette FA, et al. Influence of post-starvation extraction time and prey-specific diet in Tityus serrulatus scorpion venom composition and hyaluronidase activity. Toxicon. 2014;90:326–36.
Laustsen AH, María Gutiérrez J, Knudsen C, Johansen KH, Bermúdez-Méndez E, Cerni FA, et al. Pros and cons of different therapeutic antibody formats for recombinant antivenom development. Toxicon. 2018;146:151–75.
Laustsen AH, Engmark M, Milbo C, Johannesen J, Lomonte B, Gutiérrez JM, et al. From fangs to pharmacology: the future of snakebite envenoming therapy. Curr Pharm Des. 2016;22(34):5270–93.
Calvete JJ, Sanz L, Angulo Y, Lomonte B, Gutiérrez JM. Venoms, venomics, antivenomics. FEBS Lett. 2009;583(11):1736–43.
Lomonte B, Calvete JJ. Strategies in ‘snake venomics’ aiming at an integrative view of compositional, functional, and immunological characteristics of venoms. J Venom Anim Toxins Incl Trop Dis. 2017;23:26. https://doi.org/10.1186/s40409-017-0117-8.
Lomonte B, Escolano J, Fernández J, Sanz L, Angulo Y, Gutiérrez JM, et al. Snake venomics and antivenomics of the arboreal neotropical pitvipers Bothriechis lateralis and Bothriechis schlegelii. J Proteome Res. 2008;7(6):2445–57.
Pla D, Gutiérrez JM, Calvete JJ. Second generation snake antivenomics: comparing immunoaffinity and immunodepletion protocols. Toxicon. 2012;60(4):688–99.
Correa-Netto C, Teixeira-Araujo R, Aguiar AS, Melgarejo AR, De-Simone SG, Soares MR, et al. Immunome and venome of Bothrops jararacussu: a proteomic approach to study the molecular immunology of snake toxins. Toxicon. 2010;55(7):1222–35.
Lauridsen LP, Laustsen AH, Lomonte B, Gutiérrez JM. Exploring the venom of the forest cobra snake: Toxicovenomics and antivenom profiling of Naja melanoleuca. J Proteome. 2017;150:98–108.
Oliveira IS, Cardoso IA, Bordon KCF, Carone SEI, Boldrini-França J, Pucca MB, et al. Global proteomic and functional analysis of Crotalus durissus collilineatus individual venom variation and its impact on envenoming. J Proteome. 2018. https://doi.org/10.1016/j.jprot.2018.02.020.
Calvete JJ, Juarez P, Sanz L. Snake venomics. Strategy and applications. J Mass Spectrom. 2007;42:1405–14.
Scopes RK. Measurement of protein by spectrophotometry at 205 nm. Anal Biochem. 1974;59(1):277–82.
Selvanayagam ZE, Gopalakrishnakone P. Tests for detection of snake venoms, toxins and venom antibodies: review on recent trends (1987-1997). Toxicon. 1999;37(4):565–86.
Khaing EM, Hurtado PR, Hurtado E, Zaw A, White J, Warrell DA, et al. Development of an ELISA assay to determine neutralising capacity of horse serum following immunisation with Daboia siamensis venom in Myanmar. Toxicon. 2018;151:163–8.
Barbosa CF, Rodrigues RJ, Olortegui CC, Sanchez EF, Heneine LG. Determination of the neutralizing potency of horse antivenom against bothropic and crotalic venoms by indirect enzyme immunoassay. Braz J Med Biol Res. 1995;28(10):1077–80.
Ferreira RS Jr, Pavan Anderlini R, Augusto Brazil Esteves Sant’ Anna O, Carvalho Pimenta D, De Oliveira Orsi R, Barraviera B. New nanostructured silica adjuvant (SBA-15) employed to produce antivenom in young sheep using Crotalus durissus terrificus and Apis mellifera venoms detoxified by cobalt-60. J Toxicol Environ Health A. 2010;73(13–14):926–33.
Barraviera B, Sartori A, Pereira da Silva MF, Kaneno R, Peracoli MTS. Use of an ELISA assay to evaluate venom, antivenom, IgG and IgM human antibody levels in serum and cerebrospinal fluid from patients bitten by Crotalus durissus terrificus in Brazil. J Venom Anim Toxins. 1996;2:14–27 www.scielo.br/scielo.php?pid=S0104-79301996000100003&script=sci_abstract.
Pucca MB, Cerni FA, Peigneur S, Arantes EC, Tytgat J, Barbosa JE. Serrumab: a novel human single chain-fragment antibody with multiple scorpion toxin-neutralizing capacities. J Immunotoxicol. 2014;11(2):133–40.
Silva LC, Pucca MB, Pessenda G, Campos LB, Martinez EZ, Cerni FA, et al. Discovery of human scFvs that cross-neutralize the toxic effects of B. jararacussu and C. d. terrificus venoms. Acta Trop. 2018;177:66–73.
Butler JE, Feldbush TL, McGivern PL, Stewart N. The enzyme-linked immunosorbent assay (ELISA): a measure of antibody concentration or affinity. Immunochemistry. 1978;15(2):131–6.
Kemeny DM, Challacombe SJ. ELISA and other solid phase immunoassays: theoretical and practical aspects; 1988.
Gonçalves JM, Vieira LG. Estudos sobre venenos de serpentes brasileiras. I Análise eletroforética An Acad Bras Cienc. 1950;22:141–50.
Oguiura N, Boni-Mitake M, Rádis-Baptista G. New view on crotamine, a small basic polypeptide myotoxin from south American rattlesnake venom. Toxicon. 2005;46(4):363–70.
Peigneur S, Orts DJ, Prieto da Silva AR, Oguiura N, Boni-Mitake M, de Oliveira EB, et al. Crotamine pharmacology revisited: novel insights based on the inhibition of KV channels. Mol Pharmacol. 2012;82(1):90–6.
Boldrini-Franca J, Corrêa-Netto C, Silva MMS, Rodrigues RS, De La Torre P, Perez A, et al. Snake venomics and antivenomics of Crotalus durissus subspecies from Brazil: assessment of geographic variation and its implication on snakebite management. J Proteome. 2010;73(9):1758–76.
Teixeira-Araújo R, Castanheira P, Brazil-Más L, Pontes F, Leitão de Araújo M, Machado Alves ML, et al. Antivenomics as a tool to improve the neutralizing capacity of the crotalic antivenom: a study with crotamine. J Venom Anim Toxins incl Trop Dis. 2017;23:28. https://doi.org/10.1186/s40409-017-0118-7.
Laustsen AH, Lomonte B, Lohse B, Fernández J, Gutiérrez JM. Unveiling the nature of black mamba (Dendroaspis polylepis) venom through venomics and antivenom immunoprofiling: identification of key toxin targets for antivenom development. J Proteome. 2015;119:126–42.
Laustsen AH, Gutiérrez JM, Rasmussen AR, Engmark M, Gravlund P, Sanders KL, et al. Danger in the reef: proteome, toxicity, and neutralization of the venom of the olive sea snake, Aipysurus laevis. Toxicon. 2015;107(Pt B):187–96.
Rey-Suárez P, Núñez V, Fernández J, Lomonte B. Integrative characterization of the venom of the coral snake Micrurus dumerilii (Elapidae) from Colombia: proteome, toxicity, and cross-neutralization by antivenom. J Proteome. 2016;136:262–73.
Lomonte B, Sasa M, Rey-Suárez P, Bryan W, Gutiérrez JM. Venom of the coral snake Micrurus clarki: proteomic profile, toxicity, immunological cross-neutralization, and characterization of a three-finger toxin. Toxins (Basel). 2016;8(5):1–15.
The authors acknowledge Dr. Palmira Cupo (School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil) for the donation of anticrotalic serum.
Financial support of Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Coordination for the Improvement of Higher Education Personnel, Finance Code 001, scholarship to ISO), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, São Paulo Research Foundation, grants 2011/23236–4, 2012/14996–8 and 2015/18432), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, The National Council for Scientific and Technological Development, grants 303689/2013–7 and 449960/2014–5). Additionally, this work was supported in part by the CAPES through Programa Editoração CAPES (edital n. 13/2016, auxílio n. 0722/2017, processo n. 88881.142062/2017–01) and by the CNPq through Programa Editorial CNPq/CAPES (chamada n. 26/2017, processo n. 440954/2017–7).
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Oliveira, I.S., Pucca, M.B., Sampaio, S.V. et al. Antivenomic approach of different Crotalus durissus collilineatus venoms. J Venom Anim Toxins Incl Trop Dis 24, 34 (2018). https://doi.org/10.1186/s40409-018-0169-4