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Costa Kamura BD, Albertino LG, Cavallari RR, Queiroz de Souza L, Rodrigues LT, Barros de Sousa Pereira I, Rocha NS, Takahira RK, Briscola Pereira WA, Borges AS, Oliveira-Filho JPD, Amorim RM. Clinical and pathological findings of Africanized bee (Apis mellifera) envenomation in horses. Toxicon 2024; 251:108136. [PMID: 39433260 DOI: 10.1016/j.toxicon.2024.108136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 09/25/2024] [Accepted: 10/18/2024] [Indexed: 10/23/2024]
Abstract
Africanized crossbred bees (Apis mellifera) originated in Brazil in 1957, and since then, the number of accidents involving humans and animals has significantly increased. Although they are considered clinical emergencies, there are few reports describing the clinical and pathological aspects of bee envenomation in horses. In this context, this report aims to describe the clinical and pathological features of bee toxicity after massive bee envenomation in three horses. The horses were referred to the veterinary hospital the day following the attack, and after clinical and laboratory examination, they presented with vascular, muscular, pulmonary, hepatic, and renal impairment. Even after the initiation of therapy immediately upon admission, the clinical condition of the two horses worsened, and they died within two days of hospitalization, with pathological analysis confirming the previously observed clinical alterations of generalized vasculopathy, liver degeneration, pulmonary edema, and renal tubular necrosis. Many cases of massive bee envenomation have been documented in both humans and animals, particularly in dogs. Understanding the mechanism of action of apitoxin, its effects on various tissues, and the ideal therapy for each patient has proven crucial for improving survival rates.
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Affiliation(s)
- Beatriz da Costa Kamura
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Lukas Garrido Albertino
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Ricardo Romera Cavallari
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Larissa Queiroz de Souza
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | | | | | - Noeme Sousa Rocha
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Regina Kiomi Takahira
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Wanderson Adriano Briscola Pereira
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Alexandre Secorun Borges
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - José Paes de Oliveira-Filho
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil
| | - Rogério Martins Amorim
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Botucatu, Brazil.
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2
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Cavalcante JS, Riciopo PM, Pereira AFM, Jeronimo BC, Angstmam DG, Pôssas FC, de Andrade Filho A, Cerni FA, Pucca MB, Ferreira Junior RS. Clinical complications in envenoming by Apis honeybee stings: insights into mechanisms, diagnosis, and pharmacological interventions. Front Immunol 2024; 15:1437413. [PMID: 39359723 PMCID: PMC11445026 DOI: 10.3389/fimmu.2024.1437413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 08/20/2024] [Indexed: 10/04/2024] Open
Abstract
Envenoming resulting from Apis honeybee stings pose a neglected public health concern, with clinical complications ranging from mild local reactions to severe systemic manifestations. This review explores the mechanisms underlying envenoming by honeybee sting, discusses diagnostic approaches, and reviews current pharmacological interventions. This section explores the diverse clinical presentations of honeybee envenoming, including allergic and non-allergic reactions, emphasizing the need for accurate diagnosis to guide appropriate medical management. Mechanistic insights into the honeybee venom's impact on physiological systems, including the immune and cardiovascular systems, are provided to enhance understanding of the complexities of honeybee sting envenoming. Additionally, the article evaluates emerging diagnostic technologies and therapeutic strategies, providing a critical analysis of their potential contributions to improved patient outcomes. This article aims to provide current knowledge for healthcare professionals to effectively manage honeybee sting envenoming, thereby improving patient care and treatment outcomes.
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Affiliation(s)
- Joeliton S Cavalcante
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Pedro Marques Riciopo
- Department of Bioprocess and Biotechnology, School of Agriculture, Agronomic Sciences School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Ana Flávia Marques Pereira
- Center for the Study of Venoms and Venomous Animals of UNESP (CEVAP), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Bruna Cristina Jeronimo
- Center for the Study of Venoms and Venomous Animals of UNESP (CEVAP), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Davi Gomes Angstmam
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Felipe Carvalhaes Pôssas
- Minas Gerais Toxicological Information and Assistance Center, João XXIII Hospital, Belo Horizonte, Minas Gerais, Brazil
| | - Adebal de Andrade Filho
- Minas Gerais Toxicological Information and Assistance Center, João XXIII Hospital, Belo Horizonte, Minas Gerais, Brazil
| | - Felipe A Cerni
- Graduate Program in Tropical Medicine of the State University of Amazonas, Manaus, Amazonas, Brazil
| | - Manuela B Pucca
- Center for the Study of Venoms and Venomous Animals of UNESP (CEVAP), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Rui Seabra Ferreira Junior
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Center for the Study of Venoms and Venomous Animals of UNESP (CEVAP), São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Center for Translational Science and Development of Biopharmaceuticals FAPESP/CEVAP-UNESP, Botucatu, São Paulo, Brazil
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3
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Todorova T, Boyadzhiev K, Dimitrov M, Parvanova P. Bee venom genotoxicity on Saccharomyces cerevisiae cells - The role of mitochondria and YAP1 transcription factor. Toxicology 2024; 503:153768. [PMID: 38442839 DOI: 10.1016/j.tox.2024.153768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/22/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
The present work aims to clarify the genotype differences of a model organism Saccharomyces cerevisiae in response to bee venom. The study evaluated various endpoints including cell survival, induction of physiologically active superoxide anions, mitotic gene conversion, mitotic crossing-over, reverse mutations, DNA double-strand breaks, and Ty1 retrotransposition. The role of the intact mitochondria and the YAP1 transcription factor was also evaluated. Our results indicate a genotype-specific response. The first experimental evidence has been provided that bee venom induces physiologically active superoxide anions and DNA double-strand breaks in S. cerevisiae. The lack of oxidative phosphorylation due to disrupted or missing mitochondrial DNA reduces but not diminishes the cytotoxicity of bee venom. The possible modes of action could be considered direct damage to membranes (cytotoxic effect) and indirect damage to DNA through oxidative stress (genotoxic effect). YAP1 transcription factor was not found to be directly involved in cell defense against bee venom treatment.
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Affiliation(s)
- Teodora Todorova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin str., Sofia 1113, Bulgaria.
| | - Krassimir Boyadzhiev
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin str., Sofia 1113, Bulgaria
| | - Martin Dimitrov
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin str., Sofia 1113, Bulgaria
| | - Petya Parvanova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin str., Sofia 1113, Bulgaria
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4
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Yu X, Jia S, Yu S, Chen Y, Zhang C, Chen H, Dai Y. Recent advances in melittin-based nanoparticles for antitumor treatment: from mechanisms to targeted delivery strategies. J Nanobiotechnology 2023; 21:454. [PMID: 38017537 PMCID: PMC10685715 DOI: 10.1186/s12951-023-02223-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/19/2023] [Indexed: 11/30/2023] Open
Abstract
As a naturally occurring cytolytic peptide, melittin (MLT) not only exhibits a potent direct tumor cell-killing effect but also possesses various immunomodulatory functions. MLT shows minimal chances for developing resistance and has been recognized as a promising broad-spectrum antitumor drug because of this unique dual mechanism of action. However, MLT still displays obvious toxic side effects during treatment, such as nonspecific cytolytic activity, hemolytic toxicity, coagulation disorders, and allergic reactions, seriously hampering its broad clinical applications. With thorough research on antitumor mechanisms and the rapid development of nanotechnology, significant effort has been devoted to shielding against toxicity and achieving tumor-directed drug delivery to improve the therapeutic efficacy of MLT. Herein, we mainly summarize the potential antitumor mechanisms of MLT and recent progress in the targeted delivery strategies for tumor therapy, such as passive targeting, active targeting and stimulus-responsive targeting. Additionally, we also highlight the prospects and challenges of realizing the full potential of MLT in the field of tumor therapy. By exploring the antitumor molecular mechanisms and delivery strategies of MLT, this comprehensive review may inspire new ideas for tumor multimechanism synergistic therapy.
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Affiliation(s)
- Xiang Yu
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, China.
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, Haikou, China.
| | - Siyu Jia
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, China
| | - Shi Yu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
| | - Yaohui Chen
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
| | - Chengwei Zhang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
| | - Haidan Chen
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, China.
| | - Yanfeng Dai
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, China.
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, Haikou, China.
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5
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A rat model of acute kidney injury caused by multiple subcutaneous injections of Asian giant hornet (Vespa mandarina Smith) venom. Toxicon 2022; 213:23-26. [DOI: 10.1016/j.toxicon.2022.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/12/2022] [Accepted: 04/11/2022] [Indexed: 12/20/2022]
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6
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Kastenhuber ER, Mercadante M, Nilsson-Payant B, Johnson JL, Jaimes JA, Muecksch F, Weisblum Y, Bram Y, Whittaker GR, tenOever BR, Schwartz RE, Chandar V, Cantley L. Coagulation factors directly cleave SARS-CoV-2 spike and enhance viral entry. eLife 2022; 11:77444. [PMID: 35294338 PMCID: PMC8942469 DOI: 10.7554/elife.77444] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open
Abstract
Coagulopathy is a significant aspect of morbidity in COVID-19 patients. The clotting cascade is propagated by a series of proteases, including factor Xa and thrombin. While certain host proteases, including TMPRSS2 and furin, are known to be important for cleavage activation of SARS-CoV-2 spike to promote viral entry in the respiratory tract, other proteases may also contribute. Using biochemical and cell-based assays, we demonstrate that factor Xa and thrombin can also directly cleave SARS-CoV-2 spike, enhancing infection at the stage of viral entry. Coagulation factors increased SARS-CoV-2 infection in human lung organoids. A drug-repurposing screen identified a subset of protease inhibitors that promiscuously inhibited spike cleavage by both transmembrane serine proteases and coagulation factors. The mechanism of the protease inhibitors nafamostat and camostat may extend beyond inhibition of TMPRSS2 to coagulation-induced spike cleavage. Anticoagulation is critical in the management of COVID-19, and early intervention could provide collateral benefit by suppressing SARS-CoV-2 viral entry. We propose a model of positive feedback whereby infection-induced hypercoagulation exacerbates SARS-CoV-2 infectivity.
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Affiliation(s)
| | - Marisa Mercadante
- Department of Medicine, Weill Cornell Medical College, New York, United States
| | - Benjamin Nilsson-Payant
- Institute of Experimental Virology, TWINCORE Zentrum für Experimentelle und Klinische Infektionsforschung GmbH, Hannover, Germany
| | - Jared L Johnson
- Department of Medicine, Weill Cornell Medical College, New York, United States
| | - Javier A Jaimes
- Department of Microbiology and Immunology, Cornell University, Ithaca, United States
| | - Frauke Muecksch
- Laboratory of Retrovirology, The Rockefeller University, New York, United States
| | - Yiska Weisblum
- Laboratory of Retrovirology, The Rockefeller University, New York, United States
| | - Yaron Bram
- Department of Medicine, Weill Cornell Medicine, New York, United States
| | - Gary R Whittaker
- Department of Microbiology and Immunology, Cornell University, Ithaca, United States
| | - Benjamin R tenOever
- Department of Microbiology, New York University Langone Medical Center, New York, United States
| | - Robert E Schwartz
- Department of Medicine, Weill Cornell Medicine, New York, United States
| | - Vasuretha Chandar
- Department of Medicine, Weill Cornell Medicine, New York, United States
| | - Lewis Cantley
- Department of Medicine, Weill Cornell Medical College, New York, United States
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7
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Cerpes U, Repelnig ML, Legat FJ. Itch in Hymenoptera Sting Reactions. FRONTIERS IN ALLERGY 2021; 2:727776. [PMID: 35387042 PMCID: PMC8974678 DOI: 10.3389/falgy.2021.727776] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 07/30/2021] [Indexed: 11/24/2022] Open
Abstract
Insect stings and the resulting itch are a ubiquitous problem. Stings by members of the insect order Hymenoptera, which includes sawflies, wasps, bees and ants, and especially by bees and wasps are extremely common, with 56–94% of the population being stung at least once in their lifetime. The complex process of venom activity and inflammation causes local reactions with pain and pruritus, sometimes anaphylactic reactions and more seldomly, as in case of numerous stings, systemic intoxication. We reviewed the literature regarding itch experienced after Hymenoptera stings, but found no study that placed a specific focus on this topic. Hymenoptera venoms are composed of many biologically active substances, including peptide toxins and proteinaceous toxins. Peptide toxins from bee venom cause cell lysis and ion channel modulation in the peripheral and central nervous systems, while toxins from wasp venom induce mast cell degranulation and chemotaxis of polymorphonuclear leukocytes in the skin. The proteinaceous toxins cause a disruption of the cell membranes and necrotic cell death, degradation of hyaluronan (an extracellular matrix glycosaminoglycan), increased vascular permeability, hemolysis, as well as activated platelet aggregation. Mediators which could be directly involved in the venom-induced pruritus include histamine and tryptase released from mast cells, interleukin-4 and interleukin-13 from Th2 lymphocytes, as well as leukotriene C4. We postulate that a pruriceptive itch is induced due to the pharmacological properties of Hymenoptera venoms.
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8
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Das TS, Das BB, Mote C. In vivo and invitro experimentation for scientific validation of the traditional use of Chromolaena odorata (L.) against envenomation of honey bee sting. ADVANCES IN TRADITIONAL MEDICINE 2021. [DOI: 10.1007/s13596-021-00593-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Lai D, Tian Y, Zhang J, Weng CF. Hyperendogenous Heparinization Suggests a Guideline for the Management of Massive Wasp Stings in Two Victims. Wilderness Environ Med 2021; 32:344-350. [PMID: 34294538 DOI: 10.1016/j.wem.2021.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 02/18/2021] [Accepted: 02/26/2021] [Indexed: 10/20/2022]
Abstract
Bees and wasps (order Hymenoptera) are commonly encountered worldwide and often deliver defensive stings when in contact with humans. Massive envenomation resulting from >50 stings causes a toxic reaction and life-threatening complications that typically result in rhabdomyolysis and disseminated intravascular coagulation. Two male patients who were stung over 80 times by wasps experienced severe coagulation abnormality. Consecutive examination by thromboelastography (TEG) guided by heparinase treatment during their hospitalization evidenced heparin-like coagulation dysfunction despite no clinical use of heparin-like substances. Numerous tests were also conducted to confirm whether the coagulation abnormalities could be attributed to hyperendogenous heparinization and allergic reaction, rhabdomyolysis, and vascular endothelial cell injury without apparent disseminated intravascular coagulation, which might all be affected by the production of endogenous heparin. The reduced coagulation potential caused by hyperendogenous heparinization was associated with the binding of antithrombin and the activation of fibrinolysis. In addition, TEG-identified coagulopathy was moderated using protamine for heparin neutralization. The massively envenomed patients survived and were discharged after completion of medical care. We also review clinical manifestations from other published case reports, including topical treatment. Our study provides clinical evidence and guidance for diagnosis via TEG and appropriate intervention with protamine for patients with massive wasp envenomation.
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Affiliation(s)
- Dong Lai
- Department of Transfusion, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China; Intensive Care Unit, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China; Department of Clinical Medicine, Xiamen Medical College, Xiamen, China
| | - Yan Tian
- Department of Transfusion, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China; Department of Clinical Medicine, Xiamen Medical College, Xiamen, China
| | - Jie Zhang
- Department of Transfusion, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China; Intensive Care Unit, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Ching-Feng Weng
- Department of Physiology, School of Basic Medical Science, Xiamen Medical College, Xiamen, China.
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10
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Han Q, Huang L, Li J, Wang Z, Gao H, Yang Z, Zhou Z, Liu Z. Neurotoxins in the venom gland of Calommata signata, a burrowing spider. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2021; 40:100871. [PMID: 34315107 DOI: 10.1016/j.cbd.2021.100871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/06/2021] [Accepted: 06/18/2021] [Indexed: 11/18/2022]
Abstract
Calommata signata, a burrowing spider, represents a special type of predation mode in spiders, and its utilization of toxins is different from that of web-weaving spiders and wandering spiders. The existing researches on spider toxins are mainly focused on the web-weaving and wandering spiders, but little attention on that of the burrowing spiders. Through transcriptome sequencing of C. signata venom gland and the remaining part as the counterpart tissue, 25 putative neurotoxin precursors were identified. These most neurotoxins were novel because their low similarities with the known sequences except for that of over 50% similarities in four neuropeptide toxins. The 25 neuropeptide toxins were divided into five families according to the constitution of cysteines for the possible disulfide bonds and the similarities of the deduced amino acid sequences. Besides neuropeptide toxins, other potential toxins in the venom gland were also analyzed. Unlike web-weaving spiders and wandering spiders, only a few neurotoxin genes were significantly expressed in the venom gland of C. signata. In the non-peptide toxin genes, only CsTryp_SPc-1, CsPA2-1, CsVa5-2 and four PDI genes were abundantly expressed in the venom gland. The present study provided an improved understanding on the spider toxin diversity and useful information for the exploitation of spider toxins.
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Affiliation(s)
- Qianqian Han
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Lixin Huang
- Department of Applied Microbiology, Jiangsu Lixiahe District Institute of Agricultural Sciences/National Agricultural Experimental Station for Agricultural Microbiology, Yangzhou 225007, China
| | - Jingjing Li
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Zhaoying Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Haoli Gao
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Zhiming Yang
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Zhangjin Zhou
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Zewen Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
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11
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Kastenhuber ER, Jaimes JA, Johnson JL, Mercadante M, Muecksch F, Weisblum Y, Bram Y, Schwartz RE, Whittaker GR, Cantley LC. Coagulation factors directly cleave SARS-CoV-2 spike and enhance viral entry. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021. [PMID: 33821268 DOI: 10.1101/2021.03.31.437960] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Coagulopathy is recognized as a significant aspect of morbidity in COVID-19 patients. The clotting cascade is propagated by a series of proteases, including factor Xa and thrombin. Other host proteases, including TMPRSS2, are recognized to be important for cleavage activation of SARS-CoV-2 spike to promote viral entry. Using biochemical and cell-based assays, we demonstrate that factor Xa and thrombin can also directly cleave SARS-CoV-2 spike, enhancing viral entry. A drug-repurposing screen identified a subset of protease inhibitors that promiscuously inhibited spike cleavage by both transmembrane serine proteases as well as coagulation factors. The mechanism of the protease inhibitors nafamostat and camostat extend beyond inhibition of TMPRSS2 to coagulation-induced spike cleavage. Anticoagulation is critical in the management of COVID-19, and early intervention could provide collateral benefit by suppressing SARS-CoV-2 viral entry. We propose a model of positive feedback whereby infection-induced hypercoagulation exacerbates SARS-CoV-2 infectivity.
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12
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Teixeira-Cruz JM, Strauch MA, Monteiro-Machado M, Tavares-Henriques MS, de Moraes JA, Ribeiro da Cunha LE, Ferreira, Jr. RS, Barraviera B, Quintas LEM, Melo PA. A Novel Apilic Antivenom to Treat Massive, Africanized Honeybee Attacks: A Preclinical Study from the Lethality to Some Biochemical and Pharmacological Activities Neutralization. Toxins (Basel) 2021; 13:toxins13010030. [PMID: 33466223 PMCID: PMC7824798 DOI: 10.3390/toxins13010030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 12/25/2022] Open
Abstract
Massive, Africanized honeybee attacks have increased in Brazil over the years. Humans and animals present local and systemic effects after envenomation, and there is no specific treatment for this potentially lethal event. This study evaluated the ability of a new Apilic antivenom, which is composed of F(ab’)2 fraction of specific immunoglobulins in heterologous and hyperimmune equine serum, to neutralize A. mellifera venom and melittin, in vitro and in vivo, in mice. Animal experiments were performed in according with local ethics committee license (UFRJ protocol no. DFBCICB072-04/16). Venom dose-dependent lethality was diminished with 0.25–0.5 μL of intravenous Apilic antivenom/μg honeybee venom. In vivo injection of 0.1–1 μg/g bee venom induced myotoxicity, hemoconcentration, paw edema, and increase of vascular permeability which were antagonized by Apilic antivenom. Cytotoxicity, assessed in renal LLC-PK1 cells and challenged with 10 μg/mL honeybee venom or melittin, was neutralized by preincubation with Apilic antivenom, as well the hemolytic activity. Apilic antivenom inhibited phospholipase and hyaluronidase enzymatic activities. In flow cytometry experiments, Apilic antivenom neutralized reduction of cell viability due to necrosis by honeybee venom or melittin. These results showed that this antivenom is effective inhibitor of honeybee venom actions. Thus, this next generation of Apilic antivenom emerges as a new promising immunobiological product for the treatment of massive, Africanized honeybee attacks.
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Affiliation(s)
- Jhonatha Mota Teixeira-Cruz
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
| | - Marcelo Abrahão Strauch
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
- Scientific Board, Vital Brazil Institute (IVB), Niterói, Rio de Janeiro 24230-410, Brazil;
- Correspondence: (M.A.S.); (L.E.M.Q.); (P.A.M.)
| | - Marcos Monteiro-Machado
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
| | - Matheus Silva Tavares-Henriques
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
| | - João Alfredo de Moraes
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
| | | | - Rui Seabra Ferreira, Jr.
- Center for the Study of Venoms and Venomous Animals (CEVAP), São Paulo State University (UNESP), Botucatu, São Paulo 18610-307, Brazil; (R.S.F.J.); (B.B.)
| | - Benedito Barraviera
- Center for the Study of Venoms and Venomous Animals (CEVAP), São Paulo State University (UNESP), Botucatu, São Paulo 18610-307, Brazil; (R.S.F.J.); (B.B.)
| | - Luis Eduardo M. Quintas
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
- Correspondence: (M.A.S.); (L.E.M.Q.); (P.A.M.)
| | - Paulo A. Melo
- Graduate Program in Pharmacology and Medicinal Chemistry, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.M.T.-C.); (M.M.-M.); (M.S.T.-H.); (J.A.d.M.)
- Correspondence: (M.A.S.); (L.E.M.Q.); (P.A.M.)
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13
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de Roodt AR, Lanari LC, Lago NR, Bustillo S, Litwin S, Morón-Goñi F, Gould EG, van Grootheest JH, Dokmetjian JC, Dolab JA, Irazú L, Damin CF. Toxicological study of bee venom (Apis mellifera mellifera) from different regions of the province of Buenos Aires, Argentina. Toxicon 2020; 188:27-38. [PMID: 33007351 DOI: 10.1016/j.toxicon.2020.09.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/31/2020] [Accepted: 09/25/2020] [Indexed: 10/23/2022]
Abstract
Samples of Apis mellifera mellifera venom from different hives in two regions of the Buenos Aires province and its pool were analyzed for their lethal potency, myotoxic, defibrinogenating, hemolytic and inflammatory-edematizing activity and for the histological alterations they produce in the heart, lungs, kidneys, skeletal muscle and liver of mice. In vitro studies focused on the venom's hemolytic activity in different systems and species (horse, man, sheep and rabbit), the cytotoxicity in cellular lines, and on the proteolytic and coagulant activity in plasma and fibrinogen. Hemolytic activity, either observed in vitro or in vivo, showed similar toxicity levels for all samples. Erythrocytes of different species varied in their sensitivity to the venom pool, equines being the most sensitive and sheep the most resistant to direct hemolytic action. Local and systemic myotoxicity was evidenced by either the elevation of serum creatine kinase and/or histopathological lesions, observed in different muscles. All samples caused significant pathological alterations; pulmonary, cardiac, renal and skeletal muscle lesions were substantive and can be related to the pathophysiological mechanisms of envenomation. The venoms from different apiaries and regions of the Buenos Aires province showed very similar toxicological characteristics. These results suggest that severity of envenomation in case of a swarming could therefore be more related to the number of bees than to the differential toxicity of the venom from different regions of the province. This is the first study on the toxicity and toxicological characteristics of Apis mellifera venom in Argentina.
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Affiliation(s)
- Adolfo R de Roodt
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina; Primera Cátedra de Toxicología, Facultad de Medicina, Universidad de Buenos Aires, Argentina; Centro de Patología Experimental y Aplicada, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
| | - Laura C Lanari
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina
| | - Néstor R Lago
- Centro de Patología Experimental y Aplicada, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Soledad Bustillo
- Grupo de Investigaciones Biológicas y Moleculares (GIByM) - IQUIBA, Universidad Nacional del Nordeste, Corrientes, Argentina
| | - Silvana Litwin
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina
| | - Fernando Morón-Goñi
- Primera Cátedra de Toxicología, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | | | - Jantine H van Grootheest
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina
| | - José Ch Dokmetjian
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina
| | - Jorge A Dolab
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina
| | - Lucía Irazú
- Instituto Nacional de Enfermedades Infecciosas - ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Argentina
| | - Carlos F Damin
- Primera Cátedra de Toxicología, Facultad de Medicina, Universidad de Buenos Aires, Argentina
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14
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Pucca MB, Ahmadi S, Cerni FA, Ledsgaard L, Sørensen CV, McGeoghan FTS, Stewart T, Schoof E, Lomonte B, Auf dem Keller U, Arantes EC, Çalışkan F, Laustsen AH. Unity Makes Strength: Exploring Intraspecies and Interspecies Toxin Synergism between Phospholipases A 2 and Cytotoxins. Front Pharmacol 2020; 11:611. [PMID: 32457615 PMCID: PMC7221120 DOI: 10.3389/fphar.2020.00611] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 04/20/2020] [Indexed: 12/26/2022] Open
Abstract
Toxin synergism is a complex biochemical phenomenon, where different animal venom proteins interact either directly or indirectly to potentiate toxicity to a level that is above the sum of the toxicities of the individual toxins. This provides the animals possessing venoms with synergistically enhanced toxicity with a metabolic advantage, since less venom is needed to inflict potent toxic effects in prey and predators. Among the toxins that are known for interacting synergistically are cytotoxins from snake venoms, phospholipases A2 from snake and bee venoms, and melittin from bee venom. These toxins may derive a synergistically enhanced toxicity via formation of toxin complexes by hetero-oligomerization. Using a human keratinocyte assay mimicking human epidermis in vitro, we demonstrate and quantify the level of synergistically enhanced toxicity for 12 cytotoxin/melittin-PLA2 combinations using toxins from elapids, vipers, and bees. Moreover, by utilizing an interaction-based assay and by including a wealth of information obtained via a thorough literature review, we speculate and propose a mechanistic model for how toxin synergism in relation to cytotoxicity may be mediated by cytotoxin/melittin and PLA2 complex formation.
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Affiliation(s)
- Manuela B Pucca
- Medical School, Federal University of Roraima, Boa Vista, Brazil.,Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Shirin Ahmadi
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark.,Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Felipe A Cerni
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark.,Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Line Ledsgaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Christoffer V Sørensen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Farrell T S McGeoghan
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Trenton Stewart
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark.,Department of Biology, Lund University, Lund, Sweden
| | - Erwin Schoof
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Bruno Lomonte
- Facultad de Microbiología, Instituto Clodomiro Picado, Universidad de Costa Rica, San José, Costa Rica
| | - Ulrich Auf dem Keller
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Eliane C Arantes
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Figen Çalışkan
- Department of Biotechnology and Biosafety, Graduate School of Natural and Applied Sciences, Eskişehir Osmangazi University, Eskişehir, Turkey.,Department of Biology, Faculty of Science and Art, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Andreas H Laustsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
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15
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Factor XII-Deficient Chicken Plasma as a Useful Target for Screening of Pro- and Anticoagulant Animal Venom Toxins. Toxins (Basel) 2020; 12:toxins12020079. [PMID: 31979411 PMCID: PMC7076771 DOI: 10.3390/toxins12020079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/14/2020] [Accepted: 01/20/2020] [Indexed: 11/24/2022] Open
Abstract
The sensitivity of vertebrate citrated plasma to pro- and anticoagulant venom or toxins occurs on a microscale level (micrograms). Although it improves responses to agonists, recalcification triggers a relatively fast thrombin formation process in mammalian plasma. As it has a natural factor XII deficiency, the recalcification time (RT) of chicken plasma (CP) is comparatively long [≥ 1800 seconds (s)]. Our objective was to compare the ability of bee venom phospholipase A2 (bvPLA2) to neutralize clot formation induced by an activator of coagulation (the aPTT clot) in recalcified human and chicken plasmas, through rotational thromboelastometry. The strategy used in this study was to find doses of bvPLA2 that were sufficient enough to prolong the clotting time (CT) of these activated plasmas to values within their normal RT range. The CT of CP was prolonged in a dose-dependent manner by bvPLA2, with 17 ± 2.8 ng (n = 6) being sufficient to displace the CT values of the activated samples to ≥ 1800 s. Only amounts up to 380 ± 41 ng (n = 6) of bvPLA2 induced the same effect in activated human plasma samples. In conclusion, the high sensitivity of CP to agonists and rotational thromboelastometry could be useful. For example, during screening procedures for assaying the effects of toxins in several stages of the coagulation pathway, such as clot initiation, formation, stability, strength, or dissolution.
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16
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Perez-Riverol A, Lasa AM, Dos Santos-Pinto JRA, Palma MS. Insect venom phospholipases A1 and A2: Roles in the envenoming process and allergy. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2019; 105:10-24. [PMID: 30582958 DOI: 10.1016/j.ibmb.2018.12.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 12/10/2018] [Accepted: 12/18/2018] [Indexed: 06/09/2023]
Abstract
Insect venom phospholipases have been identified in nearly all clinically relevant social Hymenoptera, including bees, wasps and ants. Among other biological roles, during the envenoming process these enzymes cause the disruption of cellular membranes and induce hypersensitive reactions, including life threatening anaphylaxis. While phospholipase A2 (PLA2) is a predominant component of bee venoms, phospholipase A1 (PLA1) is highly abundant in wasps and ants. The pronounced prevalence of IgE-mediated reactivity to these allergens in sensitized patients emphasizes their important role as major elicitors of Hymenoptera venom allergy (HVA). PLA1 and -A2 represent valuable marker allergens for differentiation of genuine sensitizations to bee and/or wasp venoms from cross-reactivity. Moreover, in massive attacks, insect venom phospholipases often cause several pathologies that can lead to fatalities. This review summarizes the available data related to structure, model of enzymatic activity and pathophysiological roles during envenoming process of insect venom phospholipases A1 and -A2.
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Affiliation(s)
- Amilcar Perez-Riverol
- Center of the Study of Social Insects, Department of Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP, 13500, Brazil
| | - Alexis Musacchio Lasa
- Center for Genetic Engineering and Biotechnology, Biomedical Research Division, Department of System Biology, Ave. 31, e/158 and 190, P.O. Box 6162, Cubanacan, Playa, Havana, 10600, Cuba
| | - José Roberto Aparecido Dos Santos-Pinto
- Center of the Study of Social Insects, Department of Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP, 13500, Brazil
| | - Mario Sergio Palma
- Center of the Study of Social Insects, Department of Biology, Institute of Biosciences of Rio Claro, São Paulo State University (UNESP), Rio Claro, SP, 13500, Brazil.
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17
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Zhang D, Li J, Sun S, Huang C. The inhibitory effect of saPLIγ, a snake sourced PLA 2 inhibitor on carrageenan-induced inflammation in mice. Toxicon 2018; 151:89-95. [PMID: 30003915 DOI: 10.1016/j.toxicon.2018.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/07/2018] [Accepted: 07/05/2018] [Indexed: 12/23/2022]
Abstract
SaPLIγ is a natural phospholipase A2 (PLA2) inhibitor, isolated from Sinonatrix annularis, that has been demonstrated to protect against envenomation by other venomous snakes. As snake venom PLA2s and mammalian secretory PLA2s are similar, saPLIγ is thought to have potential to alleviate inflammatory reactions in which PLA2s act as a key enzyme for arachidonic acid release. The aim of this study was to investigate the anti-inflammatory effects and mechanisms of action of saPLIγ in an animal model of carrageenan-induced acute inflammation. The results indicated that saPLIγ inhibited PLA2 subtypes extensively, especially IIA-PLA2, in a dose-dependent manner. Paw swelling in mice was reduced markedly by intraperitoneal saPLIγ 2.5 mg/kg, and the effect was significantly better than observed with dexamethasone at the same dose. Lower neutrophil infiltration and tissue edema was observed in the paws of saPLIγ-treated mice. Additionally, carrageenan-induced cyclooxygenase-2 (COX-2) and pro-inflammatory cytokines (TNFα and IL-1β) were also significantly down-regulated by saPLIγ in a dose-dependent manner. These results suggested that saPLIγ had effective anti-inflammatory effects in vivo, and these were produced by blocking mammalian IB, IIA, V and X sPLA2 subtypes.
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Affiliation(s)
- Denghong Zhang
- Department of Biochemistry, College of Basic Medical Science, Nanchang University, Jiangxi province, China
| | - Jingjing Li
- Department of Biochemistry, College of Basic Medical Science, Nanchang University, Jiangxi province, China
| | - Shimin Sun
- Department of Biochemistry, College of Basic Medical Science, Nanchang University, Jiangxi province, China
| | - Chunhong Huang
- Department of Biochemistry, College of Basic Medical Science, Nanchang University, Jiangxi province, China.
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18
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Farhat E, Tegg E, Mohammed S, Grzechnik E, Favaloro EJ. Not as sweet as honey: A rare case of an apparent factor V "inhibitor" in association with bee sting anaphylaxis. Am J Hematol 2018; 93:965-970. [PMID: 29675861 DOI: 10.1002/ajh.25121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/10/2018] [Accepted: 04/17/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Elisabeth Farhat
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital; Westmead NSW Australia
| | - Elizabeth Tegg
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital; Westmead NSW Australia
| | - Soma Mohammed
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital; Westmead NSW Australia
| | - Elzbieta Grzechnik
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital; Westmead NSW Australia
| | - Emmanuel J. Favaloro
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital; Westmead NSW Australia
- Sydney Centres for Thrombosis and Haemostasis; Westmead NSW Australia
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19
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A functional and thromboelastometric-based micromethod for assessing crotoxin anticoagulant activity and antiserum relative potency against Crotalus durissus terrificus venom. Toxicon 2018; 148:26-32. [PMID: 29654870 DOI: 10.1016/j.toxicon.2018.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 11/20/2022]
Abstract
The assessment of the capacity of antivenoms to neutralize the lethal activity of snake venoms still relies on traditional rodent in vivo lethality assay. ED50 and LD50 assays require large quantities of venoms and antivenoms, and besides leading to animal suffering. Therefore, in vitro tests should be introduced for assessing antivenom neutralizing capacity in intermediary steps of antivenom production. This task is facilitated when one key lethal toxin is identified. A good example is crotoxin, a β-neurotoxin phospholipase A2-like toxin that presents anticoagulant activity in vitro and is responsible for the lethality of venoms of Crotalus durissus snakes. By using rotational thromboelastometry, we reported recently one sensitive coagulation assay for assessing relative potency of the anti-bothropic serum in neutralizing procoagulant activity of Bothrops jararaca venom upon recalcified factor-XII-deficient chicken plasma samples (CPS). In this study, we stablished conditions for determining relative potency of four batches of the anti-crotalic serum (ACS) (antagonist) in inactivating crotoxin anticoagulant activity in CPS (target) simultaneously treated with one classical activator of coagulation (agonists). The correlation coefficient (r) between values related the ACS potency in inactivating both in vitro crotoxin anticoagulant activity and the in vivo lethality of whole venom (ED50) was 0.94 (p value < 0.05). In conclusion, slowness in spontaneous thrombin/fibrin generation even after recalcification elicit time lapse sufficient for elaboration of one dose-response curve to pro- or anti-coagulant agonists in CPS. We propose this methodology as an alternative and sensitive assay for assessing antivenom neutralizing ability in plasma of immunized horses as well as for in-process quality control.
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20
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Shin SH, Bae SH, Jung HJ, Lee SA, Kim SW, Chang HH, Park HK, Lee JM, Kim S. Rhabdomyolysis and diabetic ketoacidosis after bee sting: A case report. ALLERGY ASTHMA & RESPIRATORY DISEASE 2018. [DOI: 10.4168/aard.2018.6.2.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Seung Hwan Shin
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - So Hyun Bae
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hye Jin Jung
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sang Ah Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Shin-Woo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hyun-Ha Chang
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Han-Ki Park
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jong-Myung Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sujeong Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
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21
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Massive attack of honeybee on macaws ( Ara ararauna and Ara chloropterus ) in Brazil – A case report. Toxicon 2017. [DOI: 10.1016/j.toxicon.2017.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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The Molecular Basis of Toxins' Interactions with Intracellular Signaling via Discrete Portals. Toxins (Basel) 2017; 9:toxins9030107. [PMID: 28300784 PMCID: PMC5371862 DOI: 10.3390/toxins9030107] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/02/2017] [Accepted: 03/04/2017] [Indexed: 12/20/2022] Open
Abstract
An understanding of the molecular mechanisms by which microbial, plant or animal-secreted toxins exert their action provides the most important element for assessment of human health risks and opens new insights into therapies addressing a plethora of pathologies, ranging from neurological disorders to cancer, using toxinomimetic agents. Recently, molecular and cellular biology dissecting tools have provided a wealth of information on the action of these diverse toxins, yet, an integrated framework to explain their selective toxicity is still lacking. In this review, specific examples of different toxins are emphasized to illustrate the fundamental mechanisms of toxicity at different biochemical, molecular and cellular- levels with particular consideration for the nervous system. The target of primary action has been highlighted and operationally classified into 13 sub-categories. Selected examples of toxins were assigned to each target category, denominated as portal, and the modulation of the different portal’s signaling was featured. The first portal encompasses the plasma membrane lipid domains, which give rise to pores when challenged for example with pardaxin, a fish toxin, or is subject to degradation when enzymes of lipid metabolism such as phospholipases A2 (PLA2) or phospholipase C (PLC) act upon it. Several major portals consist of ion channels, pumps, transporters and ligand gated ionotropic receptors which many toxins act on, disturbing the intracellular ion homeostasis. Another group of portals consists of G-protein-coupled and tyrosine kinase receptors that, upon interaction with discrete toxins, alter second messengers towards pathological levels. Lastly, subcellular organelles such as mitochondria, nucleus, protein- and RNA-synthesis machineries, cytoskeletal networks and exocytic vesicles are also portals targeted and deregulated by other diverse group of toxins. A fundamental concept can be drawn from these seemingly different toxins with respect to the site of action and the secondary messengers and signaling cascades they trigger in the host. While the interaction with the initial portal is largely determined by the chemical nature of the toxin, once inside the cell, several ubiquitous second messengers and protein kinases/ phosphatases pathways are impaired, to attain toxicity. Therefore, toxins represent one of the most promising natural molecules for developing novel therapeutics that selectively target the major cellular portals involved in human physiology and diseases.
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23
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Burdmann EA, Jha V. Acute kidney injury due to tropical infectious diseases and animal venoms: a tale of 2 continents. Kidney Int 2017; 91:1033-1046. [PMID: 28088326 DOI: 10.1016/j.kint.2016.09.051] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/10/2016] [Accepted: 09/28/2016] [Indexed: 12/20/2022]
Abstract
South and Southeast Asia and Latin American together comprise 46 countries and are home to approximately 40% of the world population. The sociopolitical and economic heterogeneity, tropical climate, and malady transitions characteristic of the region strongly influence disease behavior and health care delivery. Acute kidney injury epidemiology mirrors these inequalities. In addition to hospital-acquired acute kidney injury in tertiary care centers, these countries face a large preventable burden of community-acquired acute kidney injury secondary to tropical infectious diseases or animal venoms, affecting previously healthy young individuals. This article reviews the epidemiology, clinical picture, prevention, risk factors, and pathophysiology of acute kidney injury associated with tropical diseases (malaria, dengue, leptospirosis, scrub typhus, and yellow fever) and animal venom (snakes, bees, caterpillars, spiders, and scorpions) in tropical regions of Asia and Latin America, and discusses the potential future challenges due to emerging issues.
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Affiliation(s)
- Emmanuel A Burdmann
- LIM 12, Division of Nephrology, University of São Paulo Medical School, São Paulo, Brazil.
| | - Vivekanand Jha
- George Institute for Global Health, New Delhi, India, and University of Oxford, Oxford, UK
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24
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Sousa PL, Quinet YP, Cavalcante Brizeno LA, Sampaio TL, Torres AFC, Martins AMC, Assreuy AMS. The acute inflammatory response induced in mice by the venom of the giant ant Dinoponera quadriceps involves macrophage and interleukin-1β. Toxicon 2016; 117:22-9. [DOI: 10.1016/j.toxicon.2016.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 03/11/2016] [Accepted: 03/15/2016] [Indexed: 02/04/2023]
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25
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Pessenda G, Silva LC, Campos LB, Pacello EM, Pucca MB, Martinez EZ, Barbosa JE. Human scFv antibodies (Afribumabs) against Africanized bee venom: Advances in melittin recognition. Toxicon 2016; 112:59-67. [DOI: 10.1016/j.toxicon.2016.01.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 01/11/2016] [Accepted: 01/20/2016] [Indexed: 01/27/2023]
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26
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Gajski G, Domijan AM, Žegura B, Štern A, Gerić M, Novak Jovanović I, Vrhovac I, Madunić J, Breljak D, Filipič M, Garaj-Vrhovac V. Melittin induced cytogenetic damage, oxidative stress and changes in gene expression in human peripheral blood lymphocytes. Toxicon 2016; 110:56-67. [DOI: 10.1016/j.toxicon.2015.12.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 12/07/2015] [Accepted: 12/11/2015] [Indexed: 12/12/2022]
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27
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Rahman MM, Lee SJ, Kim GB, Yang DK, Alam MR, Kim SJ. An accidental fatal attack on domestic pigeons by honey bees in Bangladesh. J Vet Med Sci 2015; 77:1489-93. [PMID: 26028022 PMCID: PMC4667669 DOI: 10.1292/jvms.15-0183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Fatalities among avian species due to multiple bee stings are rare. Sixteen pigeons on a
farm in Bangladesh each suffered multiple bee stings. Ten of the pigeons died before
treatment, 5 (4–11 stings) died within 12 hr after treatment, and 1 pigeon (only 3 stings)
survived. Body temperature, heart rate, respiratory rate, hematocrit, hemoglobin,
erythrocytes, thrombocytes, MCV, MCH and MCHC decreased significantly after the incident,
but leucocytes, heterophils, basophils, eosinophils, monocytes, ALT, AST, LDH, CK,
creatinine, BUN and UA increased markedly. Overall, the hematological and biochemical
changes in the bee-stung pigeons were similar to those of mammals; however, avian species
may be more sensitive to bee stings than mammals.
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Affiliation(s)
- Md Mahbubur Rahman
- Highly Pathogenic Avian influenza Active Surveillance Network Program, FAO and Department of Livestock Service, Upazila Veterinary Hospital, Faridpur Sadar, Faridpur, Bangladesh
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28
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Helal SI, Hegazi A, Al-Menabbawy K. Apitherapy Have a Role in Treatment of Multiple Sclerosis. Open Access Maced J Med Sci 2014. [DOI: 10.3889/oamjms.2014.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIM: Multiple sclerosis (MS) is an inflammatory disease in which the fatty myelin sheaths around the axons of the brain and spinal cord are damaged. We Study the effect of Apitherapy in treatment of MS.MATERIAL AND METHODS: Fifty patients with MS, their ages ranged between 26-71 years, were subjected to complete clinical and neurological history and examination to confirm the diagnosis. All cases were under their regular treatment they were divided into two main groups, Group I received honey, pollen, royal jelly and propolis and were treated with apiacupuncture 3 times weekly, for 12 months, in addition to their medical treatment, while group II remains on their ordinary medical treatment only. Apiacupuncture was done by bee stings for regulating the immune system.RESULTS: Results revealed that 4 patients showed some improvement regarding their defects in gait, bowel control, constipation and urination, while 12 cases, showed some mild improvement in their movement in bed, and better improvement in bed sores, sensation, and better motor power, only two cases of them were able to stand for few minutes with support.CONCLUSION: Although Apitherapy is not a curable therapy in MS, but it can be used to minimize the clinical symptoms of MS, and can be included among programs of MS therapy.
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Alonso-Castro AJ. Use of medicinal fauna in Mexican traditional medicine. JOURNAL OF ETHNOPHARMACOLOGY 2014; 152:53-70. [PMID: 24440438 DOI: 10.1016/j.jep.2014.01.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/07/2014] [Accepted: 01/07/2014] [Indexed: 05/22/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Mexico has great biodiversity of fauna. The use of fauna with medicinal properties is a common practice since pre-Hispanic times. In the last decade, there has been an interest in ethnozoological studies in Mexico. Therefore, more studies are needed in order to gather information regarding the use of fauna with medicinal properties in México. Ethnozoological studies are necessary in order to discover new medications for human health. This review presents current information in terms of ethnozoological, conservation status, trade, toxicological and pharmacological effects of fauna used for medicinal purposes in Mexican traditional medicine (MTM), based on scientific literature. Future prospects for research with medicinal fauna are discussed. MATERIALS AND METHODS Bibliographic investigation was carried out by analyzing recognized books and peer-reviewed papers, consulting worldwide accepted scientific databases from the last five decades. Reports included in this review complied with the three criteria cited as follows: (i) used in Mexican traditional medicine for medicinal and/or magical-religious purposes, (ii) with experimental studies regarding the toxicological or medicinal effects and/or with studies exploring mechanisms of medicinal effects, and (iii) with information obtained from a clear source. RESULTS A total of 163 animal species, belonging to 79 families and 4 taxonomic categories, used for medicinal purposes are reported in this review. Medicinal fauna used in MTM come from birds (48), fishes (3), insects (22), mammals (49) and reptiles (41). The most versatile species which had the greatest number of medicinal properties were Mephitis macroura (21 uses), Crotalus atrox (17 uses), Dasypus novemcinctus (13 uses) and Didelphis virginiana (13 uses). However, 14 of the 161 species listed in this review are classified as endangered. Animal species are mainly used for the treatment of inflammatory, respiratory and gastrointestinal diseases. Furthermore, insects and reptiles are the animal groups with more pharmacological studies. Approximately, 11% and 5% of medicinal fauna have been tested in terms of their pharmacological and toxicological effects, respectively. CONCLUSION Despite the use of medicinal fauna in MTM, during centuries, there are a very limited number of scientific studies published on this topic. This review highlights the need to perform pharmacological, toxicological and chemical studies with medicinal fauna used in MTM.
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Berger M, Beys-da-Silva WO, Santi L, de Oliveira IM, Jorge PM, Henriques JAP, Driemeier D, Vieira MAR, Guimarães JA. Acute Lonomia obliqua caterpillar envenomation-induced physiopathological alterations in rats: evidence of new toxic venom activities and the efficacy of serum therapy to counteract systemic tissue damage. Toxicon 2013; 74:179-92. [PMID: 23994591 DOI: 10.1016/j.toxicon.2013.08.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 07/30/2013] [Accepted: 08/13/2013] [Indexed: 02/01/2023]
Abstract
The clinical manifestations of Lonomia obliqua caterpillar envenomation are systemic hemorrhage and acute kidney injury. In an effort to better understand the physiopathological mechanisms of envenomation, a rat model was established to study systemic tissue damage during L. obliqua envenomation. An array of acute venom effects was characterized, including biochemical, hematological, histopathological, myotoxic and genotoxic alterations. Rapid increases in serum alanine and aspartate transaminases, γ-glutamyl transferase, lactate dehydrogenase, hemoglobin, bilirubin, creatinine, urea and uric acid were observed, indicating that intravascular hemolysis and liver and kidney damage had occurred. Treatment with a specific antivenom (antilonomic serum) for up to 2 h post-venom injection neutralized the biochemical alterations. However, treatment after 6 h post-venom injection failed to normalize all biochemical parameters, despite its efficacy in reversing coagulation dysfunction. The hematological findings were consistent with hemolytic anemia and neutrophilic leukocytosis. The histopathological alterations were mainly related to hemorrhage and inflammation in the subcutaneous tissue, lung, heart and kidneys. Signs of congestion and hemosiderosis were evident in the spleen, and hemoglobin and/or myoglobin casts were also detected in the renal tubules. Increased levels of creatine kinase and creatine kinase-MB were correlated with the myocardial necrosis observed in vivo and confirmed the myotoxicity detected in vitro in isolated extensor digitorum longus muscles. Significant DNA damage was observed in the kidneys, heart, lung, liver and lymphocytes. The majority of the DNA lesions in the kidney were due to oxidative damage. The results presented here will aid in understanding the pathology underlying Lonomia's envenomation.
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Affiliation(s)
- Markus Berger
- Laboratório de Bioquímica Farmacológica, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Cep 91501-970, Porto Alegre, RS, Brazil
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Thomas E, Mandell DC, Waddell LS. Survival After Anaphylaxis Induced by a Bumblebee Sting in a Dog. J Am Anim Hosp Assoc 2013; 49:210-5. [DOI: 10.5326/jaaha-ms-5833] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 3.5 yr old castrated male miniature schnauzer was referred with a history of collapse after a bee sting to the left hind limb. At the time of presentation, 14 hr after the sting, the dog was hypotensive, comatose, seizuring, and had a brief period of cardiac arrest. Over the following 48 hr, the dog developed azotemia, severely elevated liver enzyme levels, hypertension, hematochezia, hematemesis, and disseminated intravascular coagulation (DIC). The dog’s neurologic status improved slowly, but significant behavioral abnormalities remained. The dog was discharged after 7 days with ongoing polyuria, polydipsia, and behavioral changes. The polydipsia and polyuria resolved within a few days, but the behavioral changes continued for 6 wk. Reports of anaphylaxis from any cause are sparse in the veterinary literature. This is the first report of suspected anaphylaxis following a bee sting. There are no previous reports of behavioral changes after physical recovery from anaphylaxis.
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Affiliation(s)
- Emily Thomas
- Matthew J. Ryan Veterinary Hospital, University of Pennsylvania, Philadelphia, PA
| | - Deborah C. Mandell
- Matthew J. Ryan Veterinary Hospital, University of Pennsylvania, Philadelphia, PA
| | - Lori S. Waddell
- Matthew J. Ryan Veterinary Hospital, University of Pennsylvania, Philadelphia, PA
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Neutralization of Apis mellifera bee venom activities by suramin. Toxicon 2013; 67:55-62. [PMID: 23474269 DOI: 10.1016/j.toxicon.2013.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 01/31/2013] [Accepted: 02/14/2013] [Indexed: 11/20/2022]
Abstract
In this work we evaluated the ability of suramin, a polysulfonated naphthylurea derivative, to antagonize the cytotoxic and enzymatic effects of the crude venom of Apis mellifera. Suramin was efficient to decrease the lethality in a dose-dependent way. The hemoconcentration caused by lethal dose injection of bee venom was abolished by suramin (30 μg/g). The edematogenic activity of the venom (0.3 μg/g) was antagonized by suramin (10 μg/g) in all treatment protocols. The changes in the vascular permeability caused by A. mellifera (1 μg/g) venom were inhibited by suramin (30 μg/g) in the pre- and posttreatment as well as when the venom was preincubated with suramin. In addition, suramin also inhibited cultured endothelial cell lesion, as well as in vitro myotoxicity, evaluated in mouse extensor digitorum longus muscle, which was inhibited by suramin (10 and 25 μM), decreasing the rate of CK release, showing that suramin protected the sarcolemma against damage induced by components of bee venom (2.5 μg/mL). Moreover, suramin inhibited the in vivo myotoxicity induced by i.m. injection of A. mellifera venom in mice (0.5 μg/g). The analysis of the area under the plasma CK vs. time curve showed that preincubation, pre- and posttreatment with suramin (30 μg/g) inhibited bee venom myotoxic activity in mice by about 89%, 45% and 40%, respectively. Suramin markedly inhibited the PLA2 activity in a concentration-dependent way (1-30 μM). Being suramin a polyanion molecule, the effects observed may be due to the interaction of its charges with the polycation components present in A. mellifera bee venom.
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Gajski G, Domijan AM, Garaj-Vrhovac V. Alterations of GSH and MDA levels and their association with bee venom-induced DNA damage in human peripheral blood leukocytes. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2012; 53:469-477. [PMID: 22730252 DOI: 10.1002/em.21708] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 05/02/2012] [Accepted: 05/07/2012] [Indexed: 06/01/2023]
Abstract
Bee venom (BV) has toxic effects in a variety of cell systems and oxidative stress has been proposed as a possible mechanism of its toxicity. This study investigated the in vitro effect of BV on glutathione (GSH) and malondialdehyde (MDA) levels, and their association with BV-induced DNA strand breaks and oxidative DNA damage in human peripheral blood leukocytes (HPBLs). Blood samples were treated with BV at concentrations ranging from 0.1 to 10 μg/ml over different lengths of time, and DNA damage in HPBLs was monitored with the alkaline and formamidopyrimidine glycoslyase (FPG)-modified comet assays, while GSH and MDA levels were determined in whole blood. Results showed a significant increase in overall DNA damage and FPG-sensitive sites in DNA of HPBLs exposed to BV compared with HPBLs from controls. An increase in DNA damage (assessed with both comet assays) was significantly associated with changes in MDA and GSH levels. When pretreated with N-acetyl-L-cysteine, a source of cysteine for the synthesis of the endogenous antioxidant GSH, a significant reduction of the DNA damaging effects of BV in HPBLs was noted. This suggests that oxidative stress is at least partly responsible for the DNA damaging effects of BV.
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Affiliation(s)
- Goran Gajski
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia.
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Alqutub AN, Masoodi I, Alsayari K, Alomair A. Bee sting therapy-induced hepatotoxicity: A case report. World J Hepatol 2011; 3:268-70. [PMID: 22059110 PMCID: PMC3208180 DOI: 10.4254/wjh.v3.i10.268] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 07/18/2011] [Accepted: 10/12/2011] [Indexed: 02/06/2023] Open
Abstract
The use of bee venom as a therapeutic agent for the relief of joint pains dates back to Hippocrates, and references to the treatment can be found in ancient Egyptian and Greek medical writings as well. Also known as apitherapy, the technique is widely used in Eastern Europe, Asia, and South America. The beneficial effects of bee stings can be attributed to mellitinin, an anti-inflammatory agent, known to be hundred times stronger than cortisone. Unfortunately, certain substances in the bee venom trigger allergic reactions which can be life threatening in a sensitized individual. Multiple stings are known to cause hemolysis, kidney injury, hepatotoxicity and myocardial infarction. The toxicity can be immediate or can manifest itself only weeks after the exposure. We describe hepatotoxicity in a 35-year-old female, following bee sting therapy for multiple sclerosis. She presented to our clinic 3 wk after therapy with a history of progressive jaundice. The patient subsequently improved, and has been attending our clinic now for the last 9 mo.
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Affiliation(s)
- Adel Nazmi Alqutub
- Adel Nazmi Alqutub, Ibrahim Masoodi, Khalid Alsayari, Ahmed Alomair, Division of Gastroenterology and Hepatology, King Fahad Medical City, Riyadh 11525, Saudi Arabia
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Rangel J, Quesada O, Gutiérrez JM, Angulo Y, Lomonte B. Membrane cholesterol modulates the cytolytic mechanism of myotoxin II, a Lys49 phospholipase A2 homologue from the venom of Bothrops asper. Cell Biochem Funct 2011; 29:365-70. [PMID: 21506137 DOI: 10.1002/cbf.1758] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 02/15/2011] [Accepted: 03/16/2011] [Indexed: 11/09/2022]
Abstract
Lys49 phospholipase A2 (PLA2) homologues present in crotalid snake venoms lack enzymatic activity, yet they induce skeletal muscle necrosis by a membrane permeabilizing mechanism whose details are only partially understood. The present study evaluated the effect of altering the membrane cholesterol content on the cytolytic activity of myotoxin II, a Lys49 PLA2 isolated from the venom of Bothrops asper, using the myogenic cell line C2C12 as a model target. Cell membrane cholesterol depletion by methyl-β-cyclodextrin (MβCD) treatment enhanced the cytolytic action of myotoxin II, as well as of its bioactive C-terminal synthetic peptide p(115-129) . Conversely, cell membrane cholesterol enrichment by preformed cholesterol-MβCD complexes reduced the cytolytic effect of myotoxin II. The toxic actions of myotoxin I, a catalytically active PLA2 from the same venom, as well as of the cytolytic peptide melittin from bee venom, also increased in cholesterol-depleted cells. Although physical and functional changes resulting from variations in membrane cholesterol are complex, these findings suggest that membrane fluidity could be a relevant parameter to explain the observed modulation of the cytolytic mechanism of myotoxin II, possibly influencing bilayer penetration. In concordance, the cytolytic effect of myotoxin II decreased in direct proportion to lower temperature, a physical factor that affects membrane fluidity. In conclusion, physicochemical properties that depend on membrane cholesterol content significantly influence the cytolytic mechanism of myotoxin II, reinforcing the concept that the primary site of action of Lys49 PLA2 myotoxins is the plasma membrane.
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Affiliation(s)
- José Rangel
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
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