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Emiliani Y, Sánchez A, Munera M, Sánchez J, Aparicio D. In silico analysis of cross reactivity among phospholipases from Hymenoptera species. F1000Res 2021; 10:2. [PMID: 34046162 PMCID: PMC8129813 DOI: 10.12688/f1000research.27089.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 12/20/2022] Open
Abstract
Background: Phospholipases are enzymes with the capacity to hydrolyze membrane lipids and have been characterized in several allergenic sources, such as hymenoptera species. However, cross-reactivity among phospholipases allergens are little understood. The objective of this study was to determine potential antigenic regions involved in cross-reactivity among allergens of phospholipases using an
in silico approach. Methods: In total, 18 amino acids sequences belonging to phospholipase family derived from species of the order hymenoptera were retrieved from the UniProt database to perform phylogenetic analysis to determine the closest molecular relationship. Multialignment was done to identify conserved regions and matched with antigenic regions predicted by ElliPro server. 3D models were obtained from modeling by homology and were used to locate cross-reactive antigenic regions. Results: Phylogenetic analysis showed that the 18 phospholipases split into four monophyletic clades (named here as A, B, C and D). Phospholipases from A clade shared an amino acid sequences’ identity of 79%. Antigenic patches predicted by Ellipro were located in highly conserved regions, suggesting that they could be involved in cross-reactivity in this group (Ves v 1, Ves a 1 and Ves m 1). Conclusions: At this point, we advanced to the characterization of potential antigenic sites involved in cross-reactivity among phospholipases. Inhibition assays are needed to confirm our finding.
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Affiliation(s)
- Yuliana Emiliani
- Health Faculty - GINUMED, Corporation University Rafael Nuñez, Cartagena, Colombia
| | - Andrés Sánchez
- Health Faculty - GINUMED, Corporation University Rafael Nuñez, Cartagena, Colombia.,Group of Clinical and Experimental Allergy, University of Antioquia, Medellín, Colombia
| | - Marlon Munera
- Health Faculty - GINUMED, Corporation University Rafael Nuñez, Cartagena, Colombia
| | - Jorge Sánchez
- Group of Clinical and Experimental Allergy, University of Antioquia, Medellín, Colombia
| | - Dilia Aparicio
- Health Faculty - GINUMED, Corporation University Rafael Nuñez, Cartagena, Colombia
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Hauke TJ, Herzig V. Love bites - Do venomous arachnids make safe pets? Toxicon 2020; 190:65-72. [PMID: 33307110 DOI: 10.1016/j.toxicon.2020.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/30/2020] [Accepted: 12/06/2020] [Indexed: 12/21/2022]
Abstract
With a global estimate of tens of thousands of arachnid enthusiasts, spiders and scorpions are gaining increasing popularity as pets in industrialised countries in Europe, Northern America and Asia. As most spiders and all scorpions are venomous and due to their mostly negative image in the public media, several governments are already considering introducing legislation to regulate the domestic care of potentially dangerous captive animals. We aimed to investigate the circumstances and effects of exposure to arachnids kept in captivity. Thus, we collected and analysed data from 354 self-reported bites and stings attributed to pet arachnids. Our data revealed that on average there were less than 20 recorded envenomations per year with ~90% preventable by due care. We also categorized the severity of the resulting symptoms and found that the vast majority of symptoms were either local (60.7%) or minor (32.8%), 5.4% were asymptomatic, only 1.1% were severe and no fatalities were recorded. Based on our database of bite and sting reports, we performed a risk assessment for arachnid pet ownership and concluded that, with the proper care, arachnids can be safely kept as pets and pose a lower risk than many other recreational activities.
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Affiliation(s)
| | - Volker Herzig
- GeneCology Research Centre, School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia.
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Ward MJ, Ellsworth SA, Rokyta DR. Venom-gland transcriptomics and venom proteomics of the Hentz striped scorpion (Centruroides hentzi; Buthidae) reveal high toxin diversity in a harmless member of a lethal family. Toxicon 2018; 142:14-29. [DOI: 10.1016/j.toxicon.2017.12.042] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/07/2017] [Accepted: 12/11/2017] [Indexed: 01/02/2023]
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Kang AM, Brooks DE. Nationwide Scorpion Exposures Reported to US Poison Control Centers from 2005 to 2015. J Med Toxicol 2016; 13:158-165. [PMID: 27921219 DOI: 10.1007/s13181-016-0594-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/13/2016] [Accepted: 11/22/2016] [Indexed: 10/20/2022] Open
Abstract
INTRODUCTION Previous studies of scorpion envenomation in the United States (US) have focused on Arizona and the bark scorpion, Centruroides sculpturatus. Although many other scorpion species live in the US, information about envenomations in other states is lacking. METHODS Nationwide scorpion exposures from 2005 to 2015 were analyzed using the National Poison Data System. RESULTS Of the 185,402 total exposures, Arizona (68.2%), Texas (10.3%), and Nevada (4.2%) were the top contributors. However, six other southern states reported greater than 100 cases annually, primarily during the warmer months and evening hours. Envenomations occurred most often in a home (97.8%) and were typically managed on-site (90.1%). Pain was the most common effect nationwide (88.7%). Arizona had the highest frequencies of sensory, neuromuscular, and respiratory effects along with higher hospitalization and ICU admission rates, although the latter appeared to drop over the study period. In contrast, local skin effects such as erythema and edema were more common outside of Arizona. Children under 10 years of age in Arizona and Nevada had the highest rates of systemic effects, hospitalization, and ICU admission. CONCLUSIONS Scorpion envenomations occurred throughout the southern US with similar seasonal and daily variations. Common clinical effects included pain, local edema, and erythema, except in Arizona and Nevada where severe systemic symptoms were more common. Systemic effects correlated with high rates of ICU admissions and intubations, especially in children under 10 years of age.
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Affiliation(s)
- A Min Kang
- Department of Medical Toxicology & Banner Poison and Drug Information Center, Banner-University Medical Center Phoenix, Phoenix, AZ, 85006, USA. .,Departments of Child Health and Internal Medicine & Center for Toxicology and Pharmacology Education and Research, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, 85004, USA.
| | - Daniel E Brooks
- Department of Medical Toxicology & Banner Poison and Drug Information Center, Banner-University Medical Center Phoenix, Phoenix, AZ, 85006, USA.,Departments of Emergency Medicine and Internal Medicine & Center for Toxicology and Pharmacology Education and Research, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, 85004, USA
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Chaïr-Yousfi I, Laraba-Djebari F, Hammoudi-Triki D. Androctonus australis hector venom contributes to the interaction between neuropeptides and mast cells in pulmonary hyperresponsiveness. Int Immunopharmacol 2015; 25:19-29. [PMID: 25601496 DOI: 10.1016/j.intimp.2015.01.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 01/06/2015] [Accepted: 01/09/2015] [Indexed: 11/28/2022]
Abstract
Lung injury and respiratory distress syndrome are frequent symptoms observed in the most severe cases of scorpion envenomation. The uncontrolled transmigration of leukocyte cells into the lung interstitium and alveolar space and pulmonary edema may be the cause of death. Mast cells can release various inflammatory mediators known to be involved in the development of lung edema following scorpion venom injection. The present study was designed to determine the evidence of neurokinin 1 (NK1) receptor and the involvement of mast cell activation to induce pulmonary edema and to increase vascular permeability after Androctonus australis hector (Aah) venom administration. To this end, mast cells were depleted using compound 48/80 (C48/80). Furthermore, the involvement of tachykinin NK1 receptors expressed on mast cell membranes was elucidated by their blocking with an antagonist. On the other hand, the ability of Aah venom to increase vascular permeability and to induce edema was also assessed by measuring the amount of Evans blue dye (EBD) extravasation in bronchoalveolar lavage (BAL) fluid and in the lungs of mice. Pulmonary edema, as assessed by the levels of EBD extravasation, was completely inhibited in compound 48/80-treated animals. Depletion by stimuli non-immunological C48/80 component markedly reduced induced inflammatory response following the venom administration. The mast cells seem to play an important role in the development of lung injury and the increase of vascular permeability in mice following the subcutaneous administration of Aah scorpion venom through the NK1 receptor.
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Affiliation(s)
- Imène Chaïr-Yousfi
- University of Sciences and Technology Houari Boumediene, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, Algiers, Algeria
| | - Fatima Laraba-Djebari
- University of Sciences and Technology Houari Boumediene, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, Algiers, Algeria.
| | - Djelila Hammoudi-Triki
- University of Sciences and Technology Houari Boumediene, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, Algiers, Algeria
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Järvinen KM, Celestin J. Anaphylaxis avoidance and management: educating patients and their caregivers. J Asthma Allergy 2014; 7:95-104. [PMID: 25031541 PMCID: PMC4096453 DOI: 10.2147/jaa.s48611] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Anaphylaxis is an increasingly prevalent problem in westernized countries. Therefore, it is of utmost importance that the increasing numbers of patients at risk for anaphylaxis receive proper education on the etiology and risk factors as well as appropriate treatment of anaphylaxis with epinephrine. The physician’s role is crucial in order to educate the patients and care takers on effective measures to prevent anaphylaxis and empower them to take charge of early recognition and proper management of an anaphylactic reaction to prevent poor outcomes. This review summarizes the clinical presentation, triggers, avoidance, and management of anaphylaxis.
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Affiliation(s)
- Kirsi M Järvinen
- Division of Allergy and Immunology, Department of Medicine, Albany Medical College, Albany, NY, USA
| | - Jocelyn Celestin
- Division of Allergy and Immunology, Department of Medicine, Albany Medical College, Albany, NY, USA
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González-Salazar F, Garza-González JN, Hernandez-Luna CE, Mata-Cárdenas BD, Carranza-Rosales P, Castro-Garza JE, Hernández-García ME, Vargas-Villarreal J. Sphingomyelinase activity of Trichomonas vaginalis extract and subfractions. BIOMED RESEARCH INTERNATIONAL 2013; 2013:679365. [PMID: 24024206 PMCID: PMC3760288 DOI: 10.1155/2013/679365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 07/10/2013] [Indexed: 11/18/2022]
Abstract
Trichomoniasis is one of the most common acute sexually transmitted curable diseases, and it is disseminated worldwide generating more than 170 million cases annually. Trichomonas vaginalis is the parasite that causes trichomoniasis and has the ability to destroy cell monolayers of the vaginal mucosa in vitro. Sphingomyelinases (SMase) are enzymes that catalyze the hydrolysis of sphingomyelin into ceramide and phosphorylcholine. Ceramide appears to be a second messenger lipid in programmed apoptosis, cell differentiation, and cell proliferation. Sphingomyelinase is probably a major source of ceramide in cells. Signal transduction mediated by ceramide leads cells to produce cytokine induced apoptosis during several inflammatory responses. SMase are also relevant toxins in several microorganisms. The main objective of this research is to identify SMase activity of T. vaginalis in the total extract (TE), P30, and S30 subfractions from brooked trophozoites. It was found that these fractions of T. vaginalis have SMase activity, which comes principally from P30 subfraction and was mainly type C. Enzymatic activity of SMase increased linearly with time and is pH dependent with two peaks by pH 5.5 and pH 7.5. The addition of manganese to the reaction mixture increased the SMase activity by 1.97.
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Affiliation(s)
- Francisco González-Salazar
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Administración de Correo No. 4, 2 de abril 501 Colonia Independencia, 64720 Monterrey, NL, Mexico
- Departamento de Ciencias Básicas, División de Ciencias de la Salud, Universidad de Monterrey, Avenida Morones Prieto 4500 Pte, 66238 San Pedro Garza García, NL, Mexico
| | - Jesús N. Garza-González
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Administración de Correo No. 4, 2 de abril 501 Colonia Independencia, 64720 Monterrey, NL, Mexico
- Departamento de Biología Celular y Genética, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, 66451 San Nicolás de los Garza, NL, Mexico
| | - Carlos E. Hernandez-Luna
- Laboratorio de Enzimología, Facultad de Ciencias Biológicas, UANL, San Nicolás de los Garza, NL, Mexico
| | - Benito David Mata-Cárdenas
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Avenida Manuel L Barragán S/N, San Nicolás de los Garza, NL, Mexico
| | - Pilar Carranza-Rosales
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Administración de Correo No. 4, 2 de abril 501 Colonia Independencia, 64720 Monterrey, NL, Mexico
| | - Jorge Enrique Castro-Garza
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Administración de Correo No. 4, 2 de abril 501 Colonia Independencia, 64720 Monterrey, NL, Mexico
| | - Magda Elizabeth Hernández-García
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Administración de Correo No. 4, 2 de abril 501 Colonia Independencia, 64720 Monterrey, NL, Mexico
| | - Javier Vargas-Villarreal
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Administración de Correo No. 4, 2 de abril 501 Colonia Independencia, 64720 Monterrey, NL, Mexico
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Akahoshi M, Song CH, Piliponsky AM, Metz M, Guzzetta A, Abrink M, Schlenner SM, Feyerabend TB, Rodewald HR, Pejler G, Tsai M, Galli SJ. Mast cell chymase reduces the toxicity of Gila monster venom, scorpion venom, and vasoactive intestinal polypeptide in mice. J Clin Invest 2011; 121:4180-91. [PMID: 21926462 DOI: 10.1172/jci46139] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 08/03/2011] [Indexed: 12/22/2022] Open
Abstract
Mast cell degranulation is important in the pathogenesis of anaphylaxis and allergic disorders. Many animal venoms contain components that can induce mast cell degranulation, and this has been thought to contribute to the pathology and mortality caused by envenomation. However, we recently reported evidence that mast cells can enhance the resistance of mice to the venoms of certain snakes and that mouse mast cell-derived carboxypeptidase A3 (CPA3) can contribute to this effect. Here, we investigated whether mast cells can enhance resistance to the venom of the Gila monster, a toxic component of that venom (helodermin), and the structurally similar mammalian peptide, vasoactive intestinal polypeptide (VIP). Using 2 types of mast cell-deficient mice, as well as mice selectively lacking CPA3 activity or the chymase mouse mast cell protease-4 (MCPT4), we found that mast cells and MCPT4, which can degrade helodermin, can enhance host resistance to the toxicity of Gila monster venom. Mast cells and MCPT4 also can limit the toxicity associated with high concentrations of VIP and can reduce the morbidity and mortality induced by venoms from 2 species of scorpions. Our findings support the notion that mast cells can enhance innate defense by degradation of diverse animal toxins and that release of MCPT4, in addition to CPA3, can contribute to this mast cell function.
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Affiliation(s)
- Mitsuteru Akahoshi
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305-5324, USA
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Adi-Bessalem S, Mendil A, Hammoudi-Triki D, Laraba-Djebari F. Lung Immunoreactivity and Airway Inflammation: Their Assessment After Scorpion Envenomation. Inflammation 2011; 35:501-8. [DOI: 10.1007/s10753-011-9338-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Abstract
PURPOSE OF REVIEW Anaphylaxis is an acute-onset and potentially life-threatening allergic reaction that can be caused by numerous allergic triggers including stinging insects. This review focuses on recent advances, natural history, risk factors and therapeutic considerations. RECENT FINDINGS Recent work suggests that concerns over insect allergy diagnosis continue to exist. This is especially true with individuals who have a convincing history of a serious life-threatening anaphylactic event, but lack the necessary diagnostic criteria of venom-specific IgE by skin test or in-vitro diagnostic methods to confirm the diagnosis. The role of occult mastocytosis or increased basophile reactivity may play a role in this subset population. Additionally, epinephrine continues to be underutilized as the primary acute intervention for an anaphylactic reaction in the emergent setting. SUMMARY The incidence of anaphylaxis continues to rise across all demographic groups, especially those less than 20 years of age. Fortunately, the fatalities related to anaphylaxis appear to have decreased over the past decades. Our understanding of various triggers, associated risk factors, as well as an improved understanding and utilization of biological markers such as serum tryptase have improved. Our ability to treat insect anaphylaxis by venom immunotherapy is highly effective. Unfortunately, anaphylaxis continues to be underappreciated and undertreated especially in regard to insect sting anaphylaxis. This includes the appropriate use of injectable epinephrine as the primary acute management tool. These findings suggest that continued education of the general population, primary care healthcare providers and emergency departments is required.
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Klotz JH, Klotz SA, Pinnas JL. Animal bites and stings with anaphylactic potential. J Emerg Med 2007; 36:148-56. [PMID: 17997071 DOI: 10.1016/j.jemermed.2007.06.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2005] [Revised: 12/06/2006] [Accepted: 02/11/2007] [Indexed: 11/26/2022]
Abstract
Anaphylaxis to animal bites and stings poses a significant medical risk of vascular or respiratory reactions that vary according to the patient's response and nature of the insult. Emergency Physicians frequently see patients who complain of an allergic reaction to an animal bite or sting. Although Hymenoptera stings, specifically those of wasps, bees, and hornets, account for the majority of these cases, other invertebrates and vertebrates are capable of causing allergic reactions and anaphylaxis. Many of the causative animals are quite unusual, and their bites and stings are not commonly appreciated as potential causes of anaphylaxis. We conducted a literature review to identify documented reports of anaphylaxis and anaphylactoid reactions to animal bites and stings. This summary is meant to heighten awareness of the diversity of animals that may cause anaphylaxis, hopefully leading to more rapid diagnosis and treatment of this dangerous condition. A diverse group of animals was found whose bites and stings cause anaphylaxis and anaphylactoid reactions. Some case summaries are presented. A potentially life-saving plan is to direct patients to proper follow-up care to prevent a future life-threatening reaction, including: prescribing epinephrine and antihistamines with proper instructions for their use; referral to an allergist to determine if skin testing, radioallergosorbent test, and immunotherapy are indicated; and reporting the case to state or local Poison Control Centers. In some cases it may be helpful to consult an entomologist or a pest control service for help in identification and elimination of certain offenders.
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Affiliation(s)
- John H Klotz
- Department of Entomology, University of California, Riverside, California 92521, USA
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