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1.
Front Immunol ; 15: 1437413, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39359723

RESUMO

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.


Assuntos
Venenos de Abelha , Mordeduras e Picadas de Insetos , Abelhas/imunologia , Animais , Mordeduras e Picadas de Insetos/imunologia , Mordeduras e Picadas de Insetos/diagnóstico , Mordeduras e Picadas de Insetos/terapia , Humanos , Venenos de Abelha/imunologia , Venenos de Abelha/efeitos adversos
2.
Toxicon ; 249: 108082, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39209220

RESUMO

Despite the wide range of institutions that maintain venomous snakes in captivity in Brazil there are no comprehensive data on the occurrence of snakebites and envenomations in these places. We examined the range of native and exotic species of venomous snakes kept by Brazilian zoos and serpentaria (scientific and commercial) and assessed the frequency of snakebites in workers handling these snakes during a 10-year period (2012-2021). Twenty-two (73.3%) of 30 institutions returned a standard questionnaire, including 15 serpentaria and 7 zoos that together kept 10,607 venomous snakes in 2022/2023. Commercial and scientific serpentaria had many more snakes (n = 10,550, consisting of 10,499 native specimens and 51 exotic specimens) than zoos (n = 57 native specimens), with two genera accounting for the majority of native species (Bothrops spp. = 84.5% and Crotalus durissus ssp. = 13.5%). Thirty-seven snakebites were reported and involved primarily the hands (33), seven of which occurred during venom extraction and 30 in other circumstances, most of them while handling/manipulating the cages or snake boxes (10) and restraining (9) or feeding (5) the snake. In addition, there were two cases of venom accidently sprayed on the face, including the eyes. Most bites were caused by Bothrops spp. (31), followed by C. durissus ssp. (4), Lachesis muta (1) and Micrurus corallinus (1). Thirty-three bites (89.2%) were treated with antivenom, with four bites to the fingers by Bothrops spp. resulting in local functional sequelae. There were 366,918 venom extractions with a ratio of 1.9 bites/100,000 extractions; no bites were recorded in the six institutions that sedated the snakes prior to venom extraction, which accounted for 22.7% of all extractions. These findings show that although snakebites are rare in Brazilian zoos and serpentaria, severe envenomation may occur. The occurrence of snakebites could be reduced by measures such as sedation of the snakes before venom extraction.


Assuntos
Animais de Zoológico , Mordeduras de Serpentes , Mordeduras de Serpentes/epidemiologia , Animais , Brasil/epidemiologia , Humanos , Venenos de Serpentes , Bothrops , Crotalus , Serpentes , Serpentes Peçonhentas
3.
São Paulo; 2024. 48 p.
Tese em Português | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: bud-5344

RESUMO

Aquatic ecosystems have a vast diversity of fauna and flora associated with them. Notably, rivers are of great social, economic, and environmental importance. The Paraná River basin comprises a river system used for energy production, recreation, production and consumption of fish resources. In addition, there is a record of a diverse fauna of venomous fish in this region which, due to their close proximity to the population, results in accidents known as ichthyism. Although these accidents are not lethal, they have a high morbidity rate and serious occupational consequences. Their main symptoms are intense pain, edema, and slow- healing lesions that can result in tissue necrosis. Albeit frequent, these accidents are underreported, making it difficult to map and treat them. Therefore, the aim of this study is to expand the knowledge about venomous fish by characterizing the venomous species found in the Paraná River with the potential to cause accidents. The venom and mucus samples were collected by the Taxonomy of Venomous Animals Laboratory - Toxicological Information and Assistance Center of Paraná and sent to the Immunoregulation Unit of the Applied Toxinology Laboratory of the Butantan Institute for analysis. The venoms were extracted by scraping the epithelium covering the spines and stingers and scraping the mucus covering the animal's body, and the supernatant was obtained by centrifugation. Proteins were quantified using the Bradford method and the protein profile was analyzed using polyacrylamide gel electrophoresis. A total of 133 individuals were collected, distributed among 19 species and 6 families (Auchenipteridae, Doradidae, Loricariidae, Pimelodidae, Cichlidae, and Myliobatiformes). The Pimelodidae family presented the highest species richness, with seven species in total. In addition, seven species collected occur outside their natural distribution area, with Pterodoras granulosus being the most abundant among all the samplings. The Auchenipteridae and Pimelodidae families have similar protein profiles, notably at 68, 38, 28, and 14 kDa in the stinger samples, although they vary for mucus. The Doradidae family, despite having two species from the same family (Pterodoras granulosus and Oxydoras kneri), did not show similarities in the protein pattern. The Cichlidae, with two families, showed only two similar bands (62 and 38 kDa). The expansion of venomous fish habitats can occur due to hydrological and limnological changes, such as river damming. Although it was expected that individuals from the same family would present similar protein profiles, this was not verified in the samples analyzed, suggesting greater diversity in the composition and types of venom. This work is the first endeavor towards notification and biochemical knowledge about fish species with the potential to cause accidents in the Paraná River basin and provides a better understanding of the ecological and toxicological characteristics of these animals.


Ecossistemas aquáticos possuem vasta diversidade associada, apresentando alto grau de importância social, econômica e ambiental, e os ambientes fluviais contemplam diversos animais e espécies vegetais que usufruem e dependem de suas propriedades para a sobrevivência, apresentando assim alto grau de endemismo. A bacia do Rio Paraná compreende um grande sistema fluvial utilizado para recreação, produção e consumo de recursos pesqueiros e produção de energia por uma das principais hidrelétricas do país, Itaipu Binacional. Devido às suas particularidades, a bacia do Rio Paraná possui registros de uma grande diversidade da fauna de peixes peçonhentos que, por estar em áreas próximas à população, resulta em acidentes denominados de ictismo. Essas ocorrências, apesar de apresentarem baixa letalidade, têm alta morbidade e sérias consequências ocupacionais, cujos principais sintomas são dor intensa, edema e lesões de lenta cicatrização que podem resultar em necrose tecidual da região afetada. Apesar de frequentes, tais acidentes são subnotificados, dificultando seu mapeamento e tratamento. Assim, o objetivo deste trabalho foi expandir o conhecimento sobre peixes peçonhentos, através da caracterização das espécies peçonhentas encontradas no Rio Paraná com potencial de causarem acidentes. As amostras de peçonha e muco foram coletadas pelo Laboratório de Taxonomia de Animais Peçonhentos - Centro de Informações e Assistência Toxicológica do Paraná e encaminhadas à Unidade de Imunorregulação do Laboratório de Toxinologia Aplicada do Instituto Butantan para análise. A extração das peçonhas ocorreu por raspado do epitélio que recobre espinhos e ferrões e raspado do muco que recobre o corpo do animal, obtendo-se sobrenadante através de centrifugação. A quantificação de proteínas se deu pelo método de Bradford e o perfil eletroforético foi analisado através de eletroforese em gel de poliacrilamida. Ao todo foram coletados 133 indivíduos, distribuídos em 19 espécies e 6 famílias (Auchenipteridae, Doradidae, Loricariidae, Pimelodidae, Cichlidae e Myliobatiformes). A família Pimelodidae apresentou maior riqueza com sete espécies ao todo. Além disso, sete espécies capturadas ocorrem fora de sua área de distribuição natural, sendo Pterodoras granulosus a mais abundante entre a soma de todas as coletas. As famílias Auchenipteridae e Pimelodidae possuem semelhanças no perfil de proteínas, notadamente em 68, 38, 28 e 14 kDa, nas amostras de espinhos, embora variando para muco. A família Doradidae, apesar de possuir duas espécies de mesma família (Pterodoras granulosus e Oxydoras kneri), não apresentou semelhanças no padrão de proteínas. Os Cichlidae, com duas famílias, apresentaram apenas duas bandas semelhantes (62 e 38 kDa). A expansão de habitats dos peixes peçonhentos pode ocorrer por alterações hidrológicas e limnológicas, como o represamento do rio. Apesar de esperado que indivíduos de mesma família apresentassem perfis proteicos semelhantes, isso não foi verificado, sugerindo maior diversidade de quantidades e tipos de peçonha. Este trabalho é o primeiro passo para a notificação e conhecimento bioquímico sobre as espécies de peixes com potencial de causarem acidentes e possibilita o maior entendimento acerca das características ecológicas e toxicológicas desses animais.

4.
Nursing (Ed. bras., Impr.) ; 26(305): 9965-9972, nov.2023. tab
Artigo em Inglês, Português | LILACS, BDENF - Enfermagem | ID: biblio-1526238

RESUMO

Objetivo: Analisar o perfil epidemiológico dos acidentes por animais peçonhentos no estado de Pernambuco, entre 2018 e 2022. Método: Pesquisa epidemiológica do tipo quantitativa, realizada com secundários do SINAN. Selecionado às variáveis: sexo, faixa etária, raça, escolaridade, gestação, local de picada, tempo de atendimento, tipo de acidente, soroterapia, classificação e evolução final. Os Programa Microsoft Excel e Word foram utilizados para análise estatística. Resultados: Foram notificados 105.005 casos, predominando-se em períodos quentes e chuvosos. Houve maior notificação no sexo feminino (53,05%), dos 20 aos 39 anos (31,74%), ensino fundamental incompleto (15,96%), pardos (67,88%) e não gestantes (87,07%). A maioria dos acidentes foram causados por escorpiões (73,39%), originando-se nos pés (30,35%), com atendimento médico em até 1 hora (47,74%), leves (85,73%), evoluindo para cura (91,52%) sem soroterapia (82,92%). Conclusão: Torna-se evidente a importância de medidas para seu controle, principalmente em orientações populacional e o preenchimento correto da ficha de notificação.(AU)


To analyze the epidemiological profile of accidents by venomous animals in the state of Pernambuco between 2018 and 2022. Method: Quantitative epidemiological research using secondary data from SINAN. The following variables were selected: gender, age group, race, schooling, pregnancy, place of bite, time of care, type of accident, serotherapy, classification and final evolution. The Microsoft Excel and Word programs were used for statistical analysis. Results: 105,005 cases were reported, predominantly during hot and rainy periods. Most cases were reported among females (53.05%), those aged between 20 and 39 (31.74%), those with incomplete primary education (15.96%), those with brown skin (67.88%) and those who were not pregnant (87.07%). The majority of accidents were caused by scorpions (73.39%), originated in the feet (30.35%), with medical attention within 1 hour (47.74%), mild (85.73%), evolving to cure (91.52%) without serotherapy (82.92%). Conclusion: The importance of measures to control the disease is clear, especially in terms of guidance for the population and the correct completion of the notification form.(AU)


Analizar el perfil epidemiológico de los accidentes por animales venenosos en el estado de Pernambuco entre 2018 y 2022. Método: Investigación epidemiológica cuantitativa utilizando datos secundarios del SINAN. Fueron seleccionadas las siguientes variables: sexo, grupo de edad, raza, escolaridad, embarazo, lugar de la mordedura, tiempo de atención, tipo de accidente, sueroterapia, clasificación y evolución final. Para el análisis estadístico se utilizó Microsoft Excel y Word. Resultados: Se notificaron 105.005 casos, predominantemente durante los períodos cálidos y lluviosos. La mayoría de los casos se notificaron en mujeres (53,05%), con edades comprendidas entre 20 y 39 años (31,74%), con estudios primarios incompletos (15,96%), de piel morena (67,88%) y no embarazadas (87,07%). La mayoría de los accidentes fueron causados por escorpiones (73,39%), se originaron en los pies (30,35%), recibieron atención médica en menos de 1 hora (47,74%), fueron leves (85,73%) y evolucionaron hacia la curación (91,52%) sin sueroterapia (82,92%). Conclusión: Es evidente la importancia de las medidas de control de la enfermedad, especialmente en lo que se refiere a la orientación de la población y a la correcta cumplimentación del formulario de notificación.(AU)


Assuntos
Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Vigilância em Saúde Pública , Monitoramento Epidemiológico , Animais Peçonhentos
5.
Toxins (Basel) ; 15(5)2023 04 28.
Artigo em Inglês | MEDLINE | ID: mdl-37235348

RESUMO

Envenomation caused by venomous animals may trigger significant local complications such as pain, edema, localized hemorrhage, and tissue necrosis, in addition to complications such as dermonecrosis, myonecrosis, and even amputations. This systematic review aims to evaluate scientific evidence on therapies used to target local effects caused by envenomation. The PubMed, MEDLINE, and LILACS databases were used to perform a literature search on the topic. The review was based on studies that cited procedures performed on local injuries following envenomation with the aim of being an adjuvant therapeutic strategy. The literature regarding local treatments used following envenomation reports the use of several alternative methods and/or therapies. The venomous animals found in the search were snakes (82.05%), insects (2.56%), spiders (2.56%), scorpions (2.56%), and others (jellyfish, centipede, sea urchin-10.26%). In regard to the treatments, the use of tourniquets, corticosteroids, antihistamines, and cryotherapy is questionable, as well as the use of plants and oils. Low-intensity lasers stand out as a possible therapeutic tool for these injuries. Local complications can progress to serious conditions and may result in physical disabilities and sequelae. This study compiled information on adjuvant therapeutic measures and underscores the importance of more robust scientific evidence for recommendations that act on local effects together with the antivenom.


Assuntos
Mordeduras de Serpentes , Aranhas , Animais , Antivenenos/uso terapêutico , Serpentes , Escorpiões , Insetos , Mordeduras de Serpentes/tratamento farmacológico
6.
Toxins (Basel) ; 15(5)2023 05 18.
Artigo em Inglês | MEDLINE | ID: mdl-37235379

RESUMO

With about 13,000 known species, ants are the most abundant venomous insects. Their venom consists of polypeptides, enzymes, alkaloids, biogenic amines, formic acid, and hydrocarbons. In this study, we investigated, using in silico techniques, the peptides composing a putative antimicrobial arsenal from the venom gland of the neotropical trap-jaw ant Odontomachus chelifer. Focusing on transcripts from the body and venom gland of this insect, it was possible to determine the gland secretome, which contained about 1022 peptides with putative signal peptides. The majority of these peptides (75.5%) were unknown, not matching any reference database, motivating us to extract functional insights via machine learning-based techniques. With several complementary methodologies, we investigated the existence of antimicrobial peptides (AMPs) in the venom gland of O. chelifer, finding 112 non-redundant candidates. Candidate AMPs were predicted to be more globular and hemolytic than the remaining peptides in the secretome. There is evidence of transcription for 97% of AMP candidates across the same ant genus, with one of them also verified as translated, thus supporting our findings. Most of these potential antimicrobial sequences (94.8%) matched transcripts from the ant's body, indicating their role not solely as venom toxins.


Assuntos
Venenos de Formiga , Formigas , Animais , Transcriptoma , Formigas/genética , Peptídeos Antimicrobianos , Peptídeos/genética , Venenos de Formiga/genética
7.
Toxicon ; 224: 107033, 2023 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-36709048

RESUMO

The Alto Juruá region has a rich diversity of venomous snakes, and snakebites represent an important cause of morbidity. The present study was carried out in five communities in the Alto Juruá region, and aimed to evaluate the history of snakebites in terms of which snakes were involved and what was the victims' conduct in relation to first aid and prevention. Between 2017 and 2019, semi-structured interviews were applied to 260 residents, 56 (21.53%) of whom had a history of snakebites. The profile of the victims is 73.2% male, a resident of rural areas who develops activities mainly in agriculture and extractivism and who has a low level of education. Just over half of the snakebites occurred during the rainy season (52.8%) and the majority during the day (77%). Bothrops bites were the most frequently reported (90.3%) and B. atrox was the most mentioned snake (jararaca and surucucu) for being responsible for snakebites (80.8%). Approximately 87.5% of the bites occurred to the lower limbs, and 48.2% of the victims were barefoot at the time of the bite. Inadequate first-aid procedures were reported, such as using tourniquets and consuming the drink known as "Específico Pessoa", not drinking water, and treatment with traditional therapy (phytotherapics, zootherapeutics and faith healers), as well as not seeking hospital care. Thus, the need to facilitate access to hospital units in these communities and health education (prevention and first aid) are essential in order to minimize this situation.


Assuntos
Bothrops , Mordeduras de Serpentes , Animais , Masculino , Humanos , Feminino , Mordeduras de Serpentes/terapia , Brasil , Serpentes , Morbidade , Antivenenos
8.
Rev. Soc. Bras. Med. Trop ; Rev. Soc. Bras. Med. Trop;56: e0144, 2023. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1449326

RESUMO

ABSTRACT Venomous fish are commonly found in Brazilian waters. The most important marine venomous fish species are stingrays (Dasyatidae, Gimnuridae, Myliobatidae, and Rhinopteridae families), catfish (Ariidae family), scorpionfish and lionfish (both Scorpaenidae family), and toadfish (Batrachoididae family). Meanwhile, Potamotrygonidae stingrays and Pimelodidae catfish are the most important venomous freshwater fish. The mechanisms of envenomation vary and involve various venomous apparatuses and glands. Despite not being highly developed, these venomous apparatuses in fish appear rudimentary, using structures such as fins and rays to inoculate toxins and rarely presenting with specialized structures. Toxins are produced by glandular tissue made up of proteinaceous cells, lacking true glands, and are positioned along the inoculation structures. However, systemic manifestations are rare. No antivenom serum has been developed for any species of American venomous fish. Brazilian venomous fish and their venoms have only recently attracted attention, leading to new studies not only addressing clinical issues in humans, but also exploring the discovery of new active substances with immense pharmacological potential.

9.
Rev Soc Bras Med Trop, v. 56, 2023, jun. 2023
Artigo em Inglês | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: bud-4979

RESUMO

Venomous fish are commonly found in Brazilian waters. The most important marine venomous fish species are stingrays (Dasyatidae, Gimnuridae, Myliobatidae, and Rhinopteridae families), catfish (Ariidae family), scorpionfish and lionfish (both Scorpaenidae family), and toadfish (Batrachoididae family). Meanwhile, Potamotrygonidae stingrays and Pimelodidae catfish are the most important venomous freshwater fish. The mechanisms of envenomation vary and involve various venomous apparatuses and glands. Despite not being highly developed, these venomous apparatuses in fish appear rudimentary, using structures such as fins and rays to inoculate toxins and rarely presenting with specialized structures. Toxins are produced by glandular tissue made up of proteinaceous cells, lacking true glands, and are positioned along the inoculation structures. However, systemic manifestations are rare. No antivenom serum has been developed for any species of American venomous fish. Brazilian venomous fish and their venoms have only recently attracted attention, leading to new studies not only addressing clinical issues in humans, but also exploring the discovery of new active substances with immense pharmacological potential.

10.
Toxins, v. 15, n. 5, 313, abr. 2023
Artigo em Inglês | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: bud-4934

RESUMO

Envenomation caused by venomous animals may trigger significant local complications such as pain, edema, localized hemorrhage, and tissue necrosis, in addition to complications such as dermonecrosis, myonecrosis, and even amputations. This systematic review aims to evaluate scientific evidence on therapies used to target local effects caused by envenomation. The PubMed, MEDLINE, and LILACS databases were used to perform a literature search on the topic. The review was based on studies that cited procedures performed on local injuries following envenomation with the aim of being an adjuvant therapeutic strategy. The literature regarding local treatments used following envenomation reports the use of several alternative methods and/or therapies. The venomous animals found in the search were snakes (82.05%), insects (2.56%), spiders (2.56%), scorpions (2.56%), and others (jellyfish, centipede, sea urchin—10.26%). In regard to the treatments, the use of tourniquets, corticosteroids, antihistamines, and cryotherapy is questionable, as well as the use of plants and oils. Low-intensity lasers stand out as a possible therapeutic tool for these injuries. Local complications can progress to serious conditions and may result in physical disabilities and sequelae. This study compiled information on adjuvant therapeutic measures and underscores the importance of more robust scientific evidence for recommendations that act on local effects together with the antivenom.

11.
RECIIS (Online) ; 16(4): 986-989, out.-dez. 2022.
Artigo em Português | LILACS | ID: biblio-1411172

RESUMO

O livro Os animais peçonhentos na saúde pública expõe um vasto histórico de acidentes envolvendo problemas de saúde provocados por animais peçonhentos. Os autores resgatam trabalhos e vivências, descritos por Louis Pasteur e Vital Brazil, fundamentais para o desenvolvimento de processos da ciência translacional como compreendida hoje, no século XXI. A obra é marcada pela defesa da necessidade de políticas públicas coerentes que sejam capazes de promover ações de capacitação, prevenção, diagnóstico, tratamento e reabilitação dos pacientes.


The book Os animais peçonhentos na saúde pública presents a vast history of accidents involving health problems caused by venomous animals. The authors rescue works and experiences, described by Louis Pasteur and Vital Brazil, fundamental for the development of translational science processes as understood today, in the 21st century. The work is marked by the defense of the need for coherent public policies capable of promoting training, prevention, diagnosis, treatment and rehabilitation of patients.


El libro Os animais peçonhentos na saúde pública expone una vasta historia de accidentes que involucran problemas de salud causados por animals venenosos. Los autores rescatan obras y experiencias, descritas por Louis Pasteur y Vital Brazil, fundamentales para el desarrollo de los procesos de ciencia translacional tal como se entienden hoy, en el siglo XXI. El libro está marcado por la defensa de la necesidad de políticas públicas coherentes capaces de promover la formación, la prevención, el diagnóstico, el tratamiento y la rehabilitación de los pacientes.


Assuntos
Humanos , Animais Peçonhentos , Pacientes , Venenos , Mordeduras e Picadas , Saúde Pública , Imunização Passiva , Assistência Centrada no Paciente , Ciência Translacional Biomédica
12.
Toxicon X ; 16: 100137, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36160931

RESUMO

Snakebite envenomings (SBEs) and other envenomings triggered by venomous animals (VAEs) represent a significant disease burden in Brazil, with 29,152 SBEs reported in 2021 alone with nearly half of those occurring in the remote Brazilian Amazon. In 2021, Brazil recorded 240,294 envenomings from snakes, scorpions, spiders, and caterpillars. Therefore, there is an unequal distribution of SBEs with high morbidity and mortality in the Brazilian Amazon. The severity of SBEs increases when patients require more than 6 h to access antivenom treatment, a common issue for the rural and indigenous populations. Understanding currently available resources and practices in Amazon remote areas of Brazil can serve to inform future interventions and guide health care policies. This study aims to develop a resource map of existing healthcare resources for the Brazilian Amazon's clinical management of VAEs with emphasis in SBEs, which will aid future strategic interventions. Data collection included a literature review, secondary data collected by government departments and organizational records, GIS mapping activities, and expert input. Our framework was guided by the three levels of healthcare service ecosystem analysis (macro, meso, and micro). Our resource map lays out a comprehensive overview of antivenom access, the distribution landscape, differences in patient transportation, and barriers to access healthcare that face populations in the Brazilian Amazon.

13.
Psychopharmacology (Berl) ; 239(9): 2753-2769, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35650304

RESUMO

RATIONALE: The endocannabinoid modulation of fear and anxiety due to the on-demand synthesis and degradation is supported by a large body of research. Although it has been proposed that anandamide (AEA) in the substantia nigra pars reticulata (SNpr) seems to be important for the organisation of innate fear-related behaviours, a role for endogenous AEA has yet to be clarified. METHODS: Mice were treated with the fatty acid amide hydrolase (FAAH) selective inhibitor URB597 at different concentrations (0.01, 0.1, 1 nmol/0.1 µL) in the SNpr and confronted by rattlesnakes (Crotalus durissus terrificus). The most effective dose of URB597 (1 nmol) was also preceded by microinjections of the CB1 receptor antagonist AM251 (0.1 nmol) into the SNpr, and mice were then confronted by the venomous snake. RESULTS: URB597 (0.1 and 1 nmol) in the SNpr decreased the expression of defensive behaviours such as defensive attention, escape, and time spent inside the burrow of mice confronted by rattlesnakes. Moreover, pretreatment of SNpr with AM251 suppressed these antiaversive effects of URB597 in this midbrain structure. CONCLUSION: Overall, these data clearly indicate that the panicolytic consequences of endogenous AEA enhancement in the SNpr are mediated by CB1 receptor signalling.


Assuntos
Crotalinae , Parte Reticular da Substância Negra , Animais , Ácidos Araquidônicos , Crotalinae/metabolismo , Crotalus/metabolismo , Endocanabinoides/metabolismo , Camundongos , Alcamidas Poli-Insaturadas , Receptor CB1 de Canabinoide/metabolismo , Substância Negra/metabolismo
14.
Toxicon ; 213: 43-51, 2022 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-35390425

RESUMO

Knowing the distribution of venomous snakes of medical importance is essential to identify areas at risk for snakebites. Thus, we used an integrative approach based on the application of geographic distribution data of venomous snakes, species distribution modeling (SDM), spatial organization of snakebites, and information on human population density for mapping the potential distribution of snakes and identifying areas at risk of snakebites in the state of Maranhão (mid-northern Brazil). From a compiled database of venomous snake records deposited in biological collections and the literature, we predict the potential distribution of venomous snakes in Maranhão, a state whose diversity and geographic distribution of venomous snake species are poorly known. With this, we constructed potential distribution maps for each venomous snake species with at least one occurrence record within state boundaries, as well as generalized maps by family (Viperidae and Elapidae) and the total number of venomous snakes in Maranhão State. We also obtained data on the number of snakebites recorded in each municipality of Maranhão over a decade (2009-2019) and we ran a Generalized Linear Model to test for relationships between the number of venomous snakebites, the area of occurrence of snakes, and human population density. We obtained 1046 records of venomous snake species for Maranhão, represented by 17 viperid and elapid species. Most of the records were from Viperidae (mostly Bothrops atrox and B. marajoensis) and were concentrated mainly in the Amazon of the northern portion of the state. The models showed accurate predictive performance for all modeled species. The entire area of Maranhão exhibits environmental conditions for the occurrence of venomous snakes, with higher suitability indices in the northern region, in the Amazon rainforest. The number of snakebites was positively correlated with the interaction between high-risk areas (i.e., greater distribution of venomous snakes) and human population density. Our study is a pioneer in using species distribution modeling in mid-northern Brazil to address the scarcity of data on snakebite-causing species, directly contributing to the theme of neglected tropical diseases of the World Health Organization.


Assuntos
Mordeduras de Serpentes , Animais , Biodiversidade , Brasil/epidemiologia , Elapidae , Planejamento em Saúde , Humanos , Doenças Negligenciadas , Mordeduras de Serpentes/epidemiologia , Serpentes
15.
Rev. Bras. Saúde Mater. Infant. (Online) ; 22(1): 167-175, Jan.-Mar. 2022. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1376207

RESUMO

Abstract Objectives: to analyze the epidemiological and clinical aspects of accidents caused by venomous animals in children under 15 years old. Methods: a cross-sectional study with an analytical component using secondary data from Centro de Informação e Assistência Toxicológica de Pernambuco (CIATox-PE), (Poison Center in Pernambuco)), in 2017 to 2019. Notifications of accidents caused were included in the studied age group and evaluated the characteristics of poisoning (animal classification, exposure zone, place and time of the occurrence and specific use of serum therapy), and of the patient (sociodemographic variables, clinical condition and evolution). The analysis performed in STATA® 13.1 presents frequency distribution tables and Pearson's chi-square for comparison. Results: of the 2678 notifications, 82,8% were scorpionism and 10, 8% snakebite. The age group of1 to 9 years old (70.5%) and being male (54.1%) were predominant. Most of the cases occurred in urban area (80.9%), in Recife (67.3%), inside the victim's residence (83.9%) and at night (47.3%). The majority (87.1%) were classified as 'mild severity', 10% received antivenom therapy and one died (by scorpionism). Two cases of snakebite in the workplace were registered. Conclusion: there was a high frequency of accidents caused in the urban area, which may be related to the lack of urban planning and sanitary education. The accidents caused among children in the household environment and the suspicion of child labor in the age group of 10 to 14 years old were also highlighted which favors the development and habits of the venomous animal.


Resumo Objetivos: analisar aspectos epidemiológicos e clínicos dos acidentes por animais peçonhentos em menores de 15 anos. Métodos: estudo transversal com componente analítico utilizando dados secundários do Centro de Informação e Assistência Toxicológica de Pernambuco (CIATox-PE), no período de 2017 a 2019. Foram incluídas as notificações dos acidentes na faixa etária estudada e avaliadas características do envenenamento (classe do animal, zona de exposição, local/turno da ocorrência e uso soroterapia específica) e do paciente (variáveis sociodemográficas, gravidade clínica e evolução). A análise realizada no STATA® 13.1 apresenta tabelas de distribuição de frequência e qui-quadrado de Pearson para comparação. Resultados: das 2678 notificações, 82,8% foram de escorpionismo e 10,8% de ofidismo. Predominaram na faixa etária de 1a 9 anos (70,5%) e sexo masculino (54,1%);ocorreram principalmente na zona urbana (80,9%),no Recife(67,3%), na residência da vítima (83,9%), durante horário noturno (47,3%). A maioria (87,1%) foi classificada como de gravidade leve, 10% receberam soroterapia e ocorreu um óbito (escorpionismo). Registraram-se dois casos de ofidismo em ambiente de trabalho. Conclusão: ressaltam-se os acidentes intradomiciliares entre crianças e a suspeita de trabalho infantil na faixa etária de 10 a 14anos.Os acidentes ocorreram sobretudo na zona urbana provavelmente associado à falta de planejamento e educação sanitária que favorece o desenvolvimento e hábitos do animal peçonhento.


Assuntos
Humanos , Lactente , Pré-Escolar , Criança , Adolescente , Mordeduras de Serpentes/epidemiologia , Indicadores de Morbimortalidade , Picadas de Escorpião/epidemiologia , Animais Peçonhentos , Brasil/epidemiologia , Estudos Transversais
16.
Rev. Ciênc. Plur ; 8(2): e23767, mar. 2022. tab, graf
Artigo em Português | BBO - Odontologia, LILACS | ID: biblio-1367887

RESUMO

Introdução: Ambientes urbanos como áreas verdes, praças, parques e escolas estão se tornando cada vez mais propícios ao aparecimento de animais peçonhentos, dentre eles as lagartas urticantes. Acidentes com algumas lagartas urticantes podem ser graves, podendo leva ao óbito, como no caso do gênero Lonomia.Objetivo:descrever o perfil epidemiológico dos acidentes envolvendo lagartas urticantes no município de Chapecó, Santa Catarina e identificar espécies vegetais hospedeiras destas lagartas.Metodologia:Foram coletados os dados epidemiológicos dos acidentes com lagartas urticantes registrados no período entre 2016 e 2017. Os dados foram obtidos junto ao Sistema de Informação de Agravos de Notificação.Foram analisadas as variáveis sexo, idade, parte do corpo acometida, os meses que houve as notificações, a ocupação dos indivíduos que tiveram contato com a lagarta, local em que residem, escolaridade e a espécie da lagarta envolvida. Ainda, foram identificados os espécimes coletados pelo setor de Vigilância em Saúde Ambiental, bem como foram identificadas as plantas hospedeira sem que foram encontrados.Resultados:Foram registrados 377 acidentes envolvendo majoritariamente o sexo feminino e a faixa etária entre 20 a 49 anos.As partes do corpo mais acometidas foram o pé (17,0%), mão (12,9%) e cabeça (11,4%). Foram identificadas seis espécies de plantas associadas à ocorrência de lagartas urticantes Conclusões:O estudo contribui com informações epidemiológicas sobre os acidentes causados por lepidópteros em um município de grande porte. Ressalta-se, a importância de ampliar as pesquisas em relação às plantas hospedeiras e a divulgação dos resultados visando a prevenção de acidentes (AU).


Introduction:Urban environments such as green areas, squares, parks and schools are becoming more and more favorableto the appearance of venomous animals, including urticatingcaterpillars. Accidents with some stinging caterpillars can be serious and can lead to death, as in the case of the genus Lonomia. Objective:to describe the epidemiological profile of accidents involving stinging caterpillars in the municipality of Chapecó, Santa Catarina and to identify host plant species of these caterpillars. Methodology:Epidemiological data on stinging caterpillar accidents recorded in the period between 2016 and 2017were collected. The data were obtained from the Sistema de Informação de Agravos de Notificação. The variables sex, age, body part affected, the months of the notifications, the occupation of the individuals who had contact with the caterpillar, the place where they live, education and the species of the caterpillar involved were analyzed. Still, the specimens collected by the Environmental Health Surveillance sector were identified, as well as the host plants in which they were found. Results:There were 377 accidents involving mostly females and the age group between 20 and 49 years. The parts of the body most affected were the foot (17.0%), hand (12.9%) and head (11.4%). Six species of plants were identified associated with the occurrence of stinging caterpillars.Conclusions:The study contributes with epidemiological information on accidents caused by Lepidoptera in a large municipality. The importance of expanding research in relation to host plants and the dissemination of results aimed at preventing accidents are emphasized (AU).


Introducción: Los entornos urbanos como áreas verdes, plazas, parques y escuelas son cada vez más propicios para la aparición de animales venenosos, incluidas las orugas urticantes. Los accidentes con algunas orugas pueden ser graves y provocar la muerte, como en el caso del género Lonomia.Objetivo: describir el perfil epidemiológico de los accidentes por orugasurticantes en el municipio de Chapecó, Santa Catarina e identificar especies de plantas hospedadoras de estas orugas.Metodología: Se recolectaron datos epidemiológicos sobre accidentes de orugas urticantes registrados en el período entre 2016 y 2017. Los datos se obtuvieron del Sistema de Informação de Agravos de Notificação(SINAN). Se analizaron las variables sexo, edad, parte del cuerpo afectada, los meses delas notificaciones, la ocupación de los individuos que tuvieron contacto con lasorugas, el lugar donde viven, educación y la especie de oruga involucrada. Aún así, se identificaron los especímenes recolectados por el sector de Vigilancia de Salud Ambiental, así como las plantas hospedantes en las que se encontraron.Resultados: Se produjeron 377 accidentes que afectaron en su mayoría a mujeres y al grupo de edad entre 20 y 49 años. Las partes del cuerpo más afectadas fueron el pie (17,0%), mano (12,9%) y cabeza (11,4%).Se identificaron seis especies de plantas asociadas con la ocurrencia de orugas urticantes.Conclusiones: El estudio presentainformación epidemiológica sobre accidentes causados por lepidópteros en un municipio de gran tamaño. Se destacala importancia de ampliar la investigación en relación con las plantas hospedantes y la difusión de resultados orientados a la prevención delosaccidentes (AU).


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Perfil de Saúde , Vigilância em Saúde Pública/métodos , Prevenção de Acidentes/instrumentação , Lepidópteros , Animais Peçonhentos , Brasil/epidemiologia , Interpretação Estatística de Dados
17.
Rev. Soc. Bras. Med. Trop ; Rev. Soc. Bras. Med. Trop;55: e0216, 2022. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1406984

RESUMO

ABSTRACT Background: Freshwater stingrays are fish that have adapted to the rivers and lakes in South America. The expansion of the Potamotrygonidae family in the Paraná River began after the damming of the Sete Quedas Falls, reaching the mouth of the Paranapanema and Tietê rivers approximately 20 years ago via the locks of the hydroelectric power plants. They are not aggressive animals; however, they have one to four stingers on their tails covered by a venom-producing epithelium and can cause severe envenomation in fishermen and bathers if stepped on or manipulated. Methods: We conducted a descriptive, retrospective, and prospective study by monitoring the fishing of the Potamotrygon genus in the lower Tietê River, mapping the location of the rays as a fishery product of professional fishermen and/or recording images of the fish caught. Results: Sixteen stingrays of the Potamotrygon genus were mapped by monitoring fishermen's fish products in the extensive area between the municipalities of Pereira Barreto and Buritama, São Paulo state. Conclusions: The lower Tietê River is fully colonized by freshwater stingrays and this expansion likely continues upstream, reaching various sub-basins of the river. The advancement of these venomous fish in areas where they did not exist previously requires education programs and interaction with the community to avoid serious injuries in bathers and fishermen and the unreasonable extermination of the animals.

18.
Braz. J. Pharm. Sci. (Online) ; 58: e191124, 2022. tab
Artigo em Inglês | LILACS | ID: biblio-1394054

RESUMO

Abstract Snakebite is one of the major health issues posing considerable morbidity and mortality. According to an estimate of World Health Organization (WHO) (World health organization, 2021) approximately 5 million people are bitten by several species of snakes resulting in up to 2.5 million envenomation cases annually. The mainstay of treatment for envenomation is intravenous administration of anti-snake venom. Although antivenom neutralizes the systemic effects but it does not relieve the symptoms such as venom-induced hemorrhage, necrosis and nephrotoxicity. Moreover, the use of antivenoms is associated with hypersensitivity reactions including urticaria, anaphylaxis, or serum sickness due to their heterologous property. Furthermore, stringent storage conditions and narrow specificity of antivenoms limit their use in both developed as well as developing countries. In this context, researchers have been searching for natural products and plant extracts to explore their antivenom activity along with anti-myotoxic, anti-hemorrhagic and anti-inflammatory properties. Plant remedies may prove to be an effective alternate for antivenom sera with less adverse events and better tolerability. To the best of our knowledge, this is the first comprehensive review of medicinal plants possessing anti-snake venom activities against certain species of snakes. The current review highlights the investigated plants with their phytochemical analysis to integrate the available information for future research and development of antivenom sera.


Assuntos
Plantas Medicinais/efeitos adversos , Venenos de Serpentes/análise , Antivenenos/análise , Venenos Elapídicos/isolamento & purificação , Compostos Fitoquímicos/agonistas , Mordeduras de Serpentes/classificação , Organização Mundial da Saúde , Extratos Vegetais , Administração Intravenosa/instrumentação
19.
Acta sci. vet. (Impr.) ; 50(supl.1): Pub. 841, 2022. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1415202

RESUMO

Background: Snakebite envenoming is a condition that affects humans and domestic animals worldwide. Identification of the snake species involved in the envenomation is infrequent. Bothrops envenomation presents typical clinicopathological features. This report describes epidemiological, clinical, and pathological data of 2 cases of Bothrops envenomation in dogs, including the first case of Bothrops moojeni snake striking a domestic animal in Brazil. Cases: Case 1. A dog was witnessed to have a Bothrops moojeni snakebite on a farm. In the first 24 h, acute lameness, pain, diffuse swelling, focal bleeding at the left forelimb, and increased whole-blood clotting time were observed in the envenomed dog. Polyvalent antivenom was administered in addition to fluid therapy, analgesics, corticosteroids, and antibiotics. On the 5th day, the animal presented spontaneous bleeding at the wound site, thrombocytopenia, and increased whole-blood clotting time. An additional dose of polyvalent antivenom was administered, and local treatment at the snakebite site was initiated. After 13 days, the dog showed no clinical or laboratory changes and recovered entirely. Case 2. A mongrel dog was taken for a necropsy to determine the cause of death. Grossly, major findings included swelling in the nasal plane that extended to the neck and dissecting hemorrhage in the subcutaneous tissue and adjacent musculature. Hemorrhages were observed in the heart, parietal pleura, left forelimb, lumbar region, and perirenal tissue. Marked necrosis and disruption of small blood vessels and lymphatics within the deep dermis and subcutaneous tissue were the main microscopic findings close to the snakebite site. Additionally, degeneration and necrosis of muscle fibers and dissecting hemorrhage were observed in the head and neck tissues surrounding the snakebite site. Kidneys showed marked interstitial hemorrhage and acute tubular nephrosis. Discussion: Bothrops envenoming is characterized by local (hemorrhage, dermonecrosis, and myonecrosis) and systemic (coagulative disorders, systemic hemorrhage, and acute kidney injury) changes due to the effect of the main venom components such as phospholipase A2 and metalloproteinases. These changes are hallmarks for the bothropic envenomation, supporting the diagnosis in cases 1 and 2. In case 1, the dog developed a Bothrops moojeni snakebite envenomation, but the immediate treatment with antivenom allowed a favorable outcome. In case 2, gross and microscopic findings supported the presumptive diagnosis of fatal bothropic envenomation. A marked local reaction such as swelling, pain, bleeding, bruising, and tissue necrosis was observed in case 1. In case 2, the most significant local changes were swelling and edema at the head and neck, hemorrhage in the subcutaneous tissue, and adjacent musculature. Systemic effects were observed clinically as spontaneous bleeding, thrombocytopenia, increased whole-blood clotting time (Case 1), systemic hemorrhages, and acute tubular nephrosis (Case 2). A proper treatment probably prevented the development of acute renal failure in Case 1. Herein, we show the first case of accidental snakebite envenomation by B. moojeni in a dog in Brazil. Information is scarce on the identification of venomous snake species striking domestic animals. Fast detection of well-determined clinical and pathological findings of Bothrops envenomation is essential for a correct diagnosis, therapeutics, and a good prognosis, even in cases with an unknown history.


Assuntos
Animais , Cães , Mordeduras de Serpentes/fisiopatologia , Mordeduras de Serpentes/veterinária , Inibidores dos Fatores de Coagulação Sanguínea/análise , Venenos de Crotalídeos/toxicidade , Bothrops
20.
Toxicon ; 201: 59-65, 2021 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-34419508

RESUMO

Bees are insects of the order Hymenoptera and are involved in human accidents. In Brazil, bees that cause accidents are crosses derived from Europeans with African bees and are known for their aggressive behavior. Despite being considered an important public health concern, epidemiological studies at the national level are scarce. The objective of this study was to verify the epidemiological profile of bee accidents in humans in Brazil, using data from 2009 to 2019 of the Brazilian Ministry of Health. It was found that bee accidents increased by 207.61% from the first to the last year of the present study. The incidence varied according to the geographical region; the southern region had more bee accidents, but the Northern region had more deaths caused by bee accidents. Besides, climatic conditions were associated with susceptibility to bee stings; the incidence was higher during spring and summer. Age was also associated with fatality rate, with the elderly being the group with the highest fatality rate. Our results demonstrate that accidents caused by bees involve factors related to patients, the environment, and the behavior of bees. It is important to know the epidemiological aspects to help prevent apidic accidents.


Assuntos
Mordeduras e Picadas de Insetos , Idoso , Animais , Abelhas , Brasil/epidemiologia , Humanos , Mordeduras e Picadas de Insetos/epidemiologia , Estações do Ano
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