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Id: biblio-1278223
Autor: Genzano, Gabriel; Puente Tapia, Francisco Alejandro; Dutto, Sofía; Schiariti, Agustín.
Título: Las medusas en los balnearios de la provincia de Buenos Aires / The jellyfish species in the coastal waters of Buenos Aires province
Fonte: Acta toxicol. argent;28(2):53-59, Sept. 2020. graf.
Idioma: es.
Resumo: Resumen Las medusas son organismos mayoritariamente marinos pertenecientes al grupo de los cnidarios, los cuales se caracterizan por presentar células urticantes especializadas, los cnidocitos. Si bien, todas las medusas son potencialmente venenosas y el grado de toxicidad depende de la especie, sus efectos sobre los humanos varían desde reacciones locales leves hasta reacciones atópicas-anafilácticas graves, llegando incluso a la muerte de la víctima. Mundialmente se conocen numerosas especies de medusas causantes de envenenamiento a humanos, tales como la avispa de mar (Chironex fleckeri), el sifonóforo carabela portuguesa (Physalia physalis) o el hidrocoral de fuego (Millepora spp.). En Argentina, tres especies de medusas revisten de im portancia clínica epidemiológica debido a su poder urticante: las hidromedusas Liriope tetraphylla y Olindias sambaquiensis, así como la escifomedusa Chrysaora lactea. Estas especies presentan sus mayores abundancias en el verano en las costas bonae renses, coincidiendo con la presencia de turistas durante el periodo vacacional. Sus afectaciones varían de leves a moderadas, registrándose desde parestesias y ardor con dermatitis, prurito, edemas y eritemas. Una infinidad de "remedios caseros" se conocen para remediar los efectos de las picaduras de medusas, sin embargo, la mayoría han resultado ineficaces y perjudiciales. Lo más recomendable es evitar frotar y lavar la zona afectada con agua dulce o aplicar hielo para tratar de contrarrestar el ardor y acudir lo antes posible al centro de salud más cercano.

Abstract Medusae are mainly a marine group belonged to cnidarians, which are characterized by specialized stinging cells, cnidocyts. Although all medusae are potentially poisonous, their toxicity depends on the species and the effects on humans vary- ing from mild local reactions to severe atopic-anaphylactic reactions, even the death of the victim. Numerous species of cnidar ians are known worldwide to affect humans, such as the sea wasp {Chironex fleckeri), the siphonophore portuguese man-of-war (Physaliaphysalis) or the fire-coral (Millepora spp.). In Argentina, three species of medusae are known with clinical epidemiological importance due to their stinging power: the hydromedusae Liriopetetraphylla and Olindias sambaquiensis, as well as the scypho- medusae Chrysaora lactea. These species have their highest abundances in the summer on Buenos Aires coasts, coinciding with the presence of tourists during the summer vacations. Its affectations vary from mild to moderate, registering from paresthesias and burning with dermatitis, itching, edemas, and erythema. An infinity of "home remedies" are known formedusae stings, how- ever, most of them have proven ineffective and harmful. It is best to avoid rubbing and washing the affected area with fresh water or applying ice to try to counteract the burning in the region and to go the health center as soon as possible.
Descritores: Cnidários/patogenicidade
Venenos de Cnidários/toxicidade
-Argentina
Nematocisto/lesões
Responsável: AR658.1 - Biblioteca Central "Leopoldo Marechal"


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Id: biblio-1041394
Autor: Bastos, Denise Maria Ramalho Ferreira; Haddad Júnior, Vidal; Nunes, Jorge Luiz Silva.
Título: Human envenomations caused by Portuguese man-of-war (Physalia physalis) in urban beaches of São Luis City, Maranhão State, Northeast Coast of Brazil
Fonte: Rev. Soc. Bras. Med. Trop;50(1):130-134, Jan.-Feb. 2017. graf.
Idioma: en.
Projeto: Fundação de Amparo à Pesquisa e Desenvolvimento Científico do Maranhão (FAPEMA).
Resumo: ABSTRACT INTRODUCTION: The clinical and epidemiological aspects associated with Portuguese man-of-war envenomation were investigated and characterized. METHODS: Data from recorded envenomation events between 2005 and 2013 were provided by the GBMar (Group of Firemen Maritime of Maranhão State) and SEMUSC (Municipal Secretary of Security with Citizenship). RESULTS: Most victims were children, and clinical manifestations included intense pain, edema, erythema, and rare systemic manifestations. CONCLUSIONS: The envenomation events were predictable and based on patterns involving multiple factors (environmental and/or human behavior); however, the initially applied measures did not match the current recommendations of the Health Ministry of Brazil.
Descritores: Venenos de Cnidários/envenenamento
Hidrozoários
-Estações do Ano
Praias
Brasil/epidemiologia
Pessoa de Meia-Idade
Limites: Humanos
Animais
Masculino
Feminino
Lactente
Pré-Escolar
Criança
Adolescente
Adulto
Adulto Jovem
Responsável: BR1.1 - BIREME


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Id: biblio-897045
Autor: Pereira, João Claudio Campos; Szpilman, David; Haddad Junior, Vidal.
Título: Anaphylactic reaction/angioedema associated with jellyfish sting
Fonte: Rev. Soc. Bras. Med. Trop;51(1):115-117, Jan.-Feb. 2018. graf.
Idioma: en.
Resumo: Abstract The most frequent jellyfish in Southern Brazil causes mainly local pain and skin plaques. A 3-year-old female bather presented an erythematous, irregular plaque on the left forearm after contact with a jellyfish and intense facial angioedema with facial flushing. The lungs had vesicular murmur, wheezes, and snorts, and pink and spumous secretion in the airways with intercostal retraction. She was administered subcutaneous adrenaline (0.1mg/kg) and hydrocortisone intravenous (10mg/kg) with total recovery in a few minutes. The manifestations of anaphylactic reactions are distinct from those of envenomations, and prompt and adequate care is fundamental in these situations.
Descritores: Mordeduras e Picadas/complicações
Cnidários/classificação
Venenos de Cnidários
Anafilaxia/etiologia
Angioedema/etiologia
-Anafilaxia/diagnóstico
Angioedema/diagnóstico
Limites: Humanos
Animais
Feminino
Tipo de Publ: Relatos de Casos
Responsável: BR1.1 - BIREME


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Id: biblio-1041566
Autor: Haddad Junior, Vidal; Costa, Maurício Azevedo de Oliveira; Nagata, Renato.
Título: Outbreak of jellyfish envenomations caused by the species olindias sambaquiensis (cnidaria: hydrozoa) in the Rio Grande do Sul state (Brazil)
Fonte: Rev. Soc. Bras. Med. Trop;52:e20190137, 2019. graf.
Idioma: en.
Descritores: Mordeduras e Picadas/epidemiologia
Surtos de Doenças
Venenos de Cnidários/envenenamento
Hidrozoários
-Estações do Ano
Índice de Gravidade de Doença
Brasil/epidemiologia
Limites: Animais
Tipo de Publ: Carta
Responsável: BR1.1 - BIREME


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Id: biblio-1087405
Autor: Young, Pablo; Rey, Graciela.
Título: Manifestaciones clínicas de las picaduras por medusa en la costa argentina / Clinical manifestations of jellyfish stings on the Argentine coast
Fonte: Salud(i)ciencia (Impresa) = Salud(i)ciencia (En linea);22(5):450-453, mayo-jun. 2017.
Idioma: es.
Descritores: Envenenamento
Mordeduras e Picadas
Venenos de Cnidários
Anafilaxia
Cifozoários
Tipo de Publ: Entrevista
Responsável: AR392.1 - Biblioteca


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Id: lil-317782
Autor: Nonato, Edmundo Ferraz; Málaque, Célia Maria Sant'Ana; Haddad Júnior, Vidal.
Título: Acidentes por animais aquáticos / Accidents for aquatic animals
Fonte: In: Veronesi, Ricardo; Focaccia, Roberto. Tratado de infectologia: v.2. Säo Paulo, Atheneu, 2002. p.1563-1569, ilus. (BR)
Idioma: pt.
Símbolo: BR.
Descritores: Acidentes
Fauna Aquática
Peçonhas
-Peixes Venenosos
Venenos de Cnidários
Equinodermos
Peixes
Anelídeos
Venenos de Moluscos
Poríferos
Responsável: BR31.1 - SIDC - Serviço de Informação e Documentação Científica
BR31.1; WC100, V599t, 2.ed., v.2


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Id: biblio-984697
Autor: Ramírez-Carreto, Santos; Pérez-García, Erick I; Salazar-García, Sandra I; Bernáldez-Sarabia, Johanna; Licea-Navarro, Alexei; Rudiño-Piñera, Enrique; Pérez-Martínez, Leonor; Pedraza-Alva, Gustavo; Rodríguez-Almazán, Claudia.
Título: Identification of a pore-forming protein from sea anemone Anthopleura dowii Verrill (1869) venom by mass spectrometry
Fonte: J. venom. anim. toxins incl. trop. dis;25:e147418, 2019. graf, ilus.
Idioma: en.
Projeto: CONACyT; . PAPIIT; . CONACyT; . CAPES; . CNPq; . CAPES.
Resumo: Background: Pore-forming proteins (PFP) are a class of toxins abundant in the venom of sea anemones. Owing to their ability to recognize and permeabilize cell membranes, pore-forming proteins have medical potential in cancer therapy or as biosensors. In the present study, we showed the partial purification and sequencing of a pore-forming protein from Anthopleura dowii Verrill (1869). 17. Methods: Cytolytic activity of A. dowii Verrill (1869) venom was determined via hemolysis assay in the erythrocytes of four mammals (sheep, goat, human and rabbit). The cytotoxic activity was analyzed in the human adherent lung carcinoma epithelial cells (A549) by the cytosolic lactate dehydrogenase (LDH) assay, and trypan blue staining. The venom was fractionated via ammonium sulfate precipitation gradient, dialysis, and ion exchange chromatography. The presence of a pore-forming protein in purified fractions was evaluated through hemolytic and cytotoxic assays, and the activity fraction was analyzed using the percent of osmotic protections after polyethylene glycol (PEG) treatment and mass spectrometry. 18. Results: The amount of protein at which the venom produced 50% hemolysis (HU50) was determined in hemolysis assays using erythrocytes from sheep (HU50 = 10.7 ± 0.2 µg), goat (HU50 = 13.2 ± 0.3 µg), rabbit (HU50 = 34.7 ± 0.5 µg), and human (HU50 = 25.6 ± 0.6 µg). The venom presented a cytotoxic effect in A549 cells and the protein amount present in the venom responsible for producing 50% death (IC50) was determined using a trypan blue cytotoxicity assay (1.84 ± 0.40 µg/mL). The loss of membrane integrity in the A549 cells caused by the venom was detected by the release of LDH in proportion to the amount of protein. The venom was fractionated; and the fraction with hemolytic and cytotoxic activities was analyzed by mass spectrometry. A pore-forming protein was identified. The cytotoxicity in the A549 cells produced by the fraction containing the pore-forming protein was osmotically protected by PEG-3350 Da molecular mass, which corroborated that the loss of integrity in the plasma membrane was produced via pore formation. 19. Conclusion: A. dowii Verrill (1869) venom contains a pore-forming protein suitable for designing new drugs for cancer therapy.(AU)
Descritores: Anêmonas-do-Mar
Venenos de Cnidários/isolamento & purificação
Neoplasias Pulmonares/terapia
-Venenos/toxicidade
Espectrometria de Massas/métodos
Células A549
Limites: Humanos
Animais
Responsável: BR33.1 - Divisão Técnica de Biblioteca e Documentação


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Id: biblio-954854
Autor: Oliveira, Cláudia S; Caldeira, Cleópatra A. S; Diniz-Sousa, Rafaela; Romero, Dolores L; Marcussi, Silvana; Moura, Laura A; Fuly, André L; Carvalho, Cicília de; Cavalcante, Walter L. G; Gallacci, Márcia; Pai, Maeli Dal; Zuliani, Juliana P; Calderon, Leonardo A; Soares, Andreimar M.
Título: Pharmacological characterization of cnidarian extracts from the Caribbean Sea: evaluation of anti-snake venom and antitumor properties
Fonte: J. venom. anim. toxins incl. trop. dis;24:22, 2018. ilus, graf.
Idioma: en.
Projeto: Ministry of Science and Technology (MCTI); . National Council for Scientific and Technological Development (CNPq); . Funding Authority for Studies and Projects (FINEP); . Coordination for the Improvement of Higher Education Personnel (CAPES); . National Research Network in Marine Biotechnology; . Genetic Heritage Management Board (CGEN/MMA).
Resumo: Cnidarians produce toxins, which are composed of different polypeptides that induce pharmacological effects of biotechnological interest, such as antitumor, antiophidic and anti-clotting activities. This study aimed to evaluate toxicological activities and potential as antitumor and antiophidic agents contained in total extracts from five cnidarians: Millepora alcicornis, Stichodactyla helianthus, Plexaura homomalla, Bartholomea annulata and Condylactis gigantea (total and body wall). Methods: The cnidarian extracts were evaluated by electrophoresis and for their phospholipase, proteolytic, hemorrhagic, coagulant, fibrinogenolytic, neuromuscular blocking, muscle-damaging, edema-inducing and cytotoxic activities. Results: All cnidarian extracts showed indirect hemolytic activity, but only S. helianthus induced direct hemolysis and neurotoxic effect. However, the hydrolysis of NBD-PC, a PLA2 substrate, was presented only by the C gigantea (body wall) and S. helianthus. The extracts from P. homomalla and S. helianthus induced edema, while only C gigantea and S. helianthus showed intensified myotoxic activity. The proteolytic activity upon casein and fibrinogen was presented mainly by B. annulata extract and all were unable to induce hemorrhage or fibrinogen coagulation. Cnidarian extracts were able to neutralize clotting induced by Bothrops jararacussu snake venom, except M. alcicornis. All cnidarian extracts were able to inhibit hemorrhagic activity induced by Bothrops moojeni venom. Only the C. gigantea (body wall) inhibited thrombin-induced coagulation. All cnidarian extracts showed antitumor effect against Jurkat cells, of which C. gigantea (body wall) and S. helianthus were the most active; however, only C. gigantea (body wall) and M. alcicornis were active against B16F10 cells. Conclusion: The cnidarian extracts analyzed showed relevant in vitro inhibitory potential over the activities induced by Bothrops venoms; these results may contribute to elucidate the possible mechanisms of interaction between cnidarian extracts and snake venoms.(AU)
Descritores: Antivenenos/toxicidade
Venenos de Cnidários/farmacologia
Venenos de Crotalídeos/imunologia
-Bothrops
Neoplasias/imunologia
Limites: Animais
Masculino
Ratos
Responsável: BR33.1 - Divisão Técnica de Biblioteca e Documentação


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Id: biblio-894176
Autor: Lazcano-Pérez, Fernando; Zavala-Moreno, Ariana; Rufino-González, Yadira; Ponce-Macotela, Martha; García-Arredondo, Alejandro; Cuevas-Cruz, Miguel; Gómez-Manzo, Saúl; Marcial-Quino, Jaime; Arreguín-Lozano, Barbarín; Arreguín-Espinosa, Roberto.
Título: Hemolytic, anticancer and antigiardial activity of Palythoa caribaeorum venom
Fonte: J. venom. anim. toxins incl. trop. dis;24:12, 2018. graf, ilus.
Idioma: en.
Projeto: PAPIIT; . Consejo Nacional de Ciencia y Tecnología (CONACyT).
Resumo: Cnidarian venoms and extracts have shown a broad variety of biological activities including cytotoxic, antibacterial and antitumoral effects. Most of these studied extracts were obtained from sea anemones or jellyfish. The present study aimed to determine the toxic activity and assess the antitumor and antiparasitic potential of Palythoa caribaeorum venom by evaluating its in vitro toxicity on several models including human tumor cell lines and against the parasite Giardia intestinalis. Methods: The presence of cytolysins and vasoconstrictor activity of P. caribaeorum venom were determined by hemolysis, PLA2 and isolated rat aortic ring assays, respectively. The cytotoxic effect was tested on HCT-15 (human colorectal adenocarcinoma), MCF-7 (human mammary adenocarcinoma), K562 (human chronic myelogenous leukemia), U251 (human glyoblastoma), PC-3 (human prostatic adenocarcinoma) and SKLU-1 (human lung adenocarcinoma). An in vivo toxicity assay was performed with crickets and the antiparasitic assay was performed against G. intestinalis at 24 h of incubation. Results: P. caribaeorum venom produced hemolytic and PLA2 activity and showed specific cytotoxicity against U251 and SKLU-1 cell lines, with approximately 50% growing inhibition. The venom was toxic to insects and showed activity against G. intestinalis in a dose-dependent manner by possibly altering its membrane osmotic equilibrium. Conclusion: These results suggest that P. caribaeorum venom contains compounds with potential therapeutic value against microorganisms and cancer.(AU)
Descritores: Giardíase/terapia
Giardia lamblia/parasitologia
Venenos de Cnidários/antagonistas & inibidores
Venenos de Cnidários/toxicidade
-Anticarcinógenos
Ratos Wistar
Venenos de Cnidários/uso terapêutico
Hemolíticos
Limites: Animais
Masculino
Ratos
Responsável: BR33.1 - Divisão Técnica de Biblioteca e Documentação


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Id: biblio-1024982
Autor: Lecanda, María Julieta; Guagliardo, Silvia; Siebenhaar, Paula; Vera, Pablo; Cardinali, Sandra; Tanzola, R. Daniel.
Título: Ecoepidemiología de las lesiones causadas por medusas urticantes en el balneario de Monte Hermoso. Buenos Aires. Argentina / Ecoepidemiology of lesions caused by venomous jellyfish in Monte Hermoso beach. Buenos Aires. Argentina
Fonte: Rev. Asoc. Med. Bahía Blanca;29(1):21-29, enero-marzo 2019.
Idioma: es.
Resumo: En la costa sudoeste bonaerense uno de los principales desafíos para el turismo es el tratamiento y la prevención de envenenamientos por medusas. Hasta el momento se conocen tres especies de medusas urticantes que arriban a la costa: Chrysaora lactea, Liriope tetraphylla y Olindias sambaquiensis. Los objetivos de este trabajo fueron: calcular los parámetros poblacionales de las medusas urticantes, efectuar el diagnóstico diferencial de los síntomas causados por envenenamiento, analizar el número de afectados en relación a la abundancia de medusas urticantes, evaluar la elección diferencial del centro de atención primaria elegido por los afectados y confeccionar un algoritmo diagnóstico. El número de medusas urticantes en el año 2016 fue cinco veces mayor que en 2017. Liriope tetraphylla registró las mayores abundancias promedio, frecuencias y dominancias relativas. En 2016 coincidió su mayor abundancia con el mayor porcentaje de afectados. En 2016 se registraron 69 casos totales de envenenamiento y en 2017 se identificaron 79 casos. En 2017 el porcentaje de personas afectadas por O. sambaquiensis no presentó una correlación con la abundancia promedio de esta especie. Liriope tetraphylla causó lesiones eritematomaculo-papulares acompañadas de prurito sin dolor, C. lactea provocó lesiones eritemato-vesiculosas de dolor moderado y O. sambaquiensis lesiones eritemato-edematosas lineales de dolor intenso con hiperpigmentación residual. No existe tratamiento específico para el envenenamiento, la terapéutica diferencial es sintomática. Las primeras acciones son comunes para las tres especies: lavar con solución fisiológica o agua de mar limpia y aplicar compresas frías.

On the Southwest coast of Buenos Aires Province one of the main challenges for tourism is the treatment and prevention of poisoning by jellyfish. So far, three species of venomous jellyfish arriving to the coast have been identified: Chrysaora lactea, Liriope tetraphylla, and Olindias sambaquiensis. The objectives of this study were: to calculate the population parameters of the venomous jellyfish, to carry out a differential diagnosis of the symptoms caused by poisoning, to analyze the number of individuals affected in relation to the abundance of this jellyfish, to evaluate which primary care centers are chosen by those affected, and to develop a diagnostic algorithm. The number of venomous jellyfish in 2016 was five times higher than in 2017. The highest average abundance, frequency, and relative dominance were recorded for L. tetraphylla. In 2016, its greatest abundance coincided with the highest percentage of people affected by this species. A total of 69 confirmed cases of poisoning caused by the three species were recorded in 2016 and 79 cases in 2017. In 2017, the percentage of people affected by O. sambaquiensis was not correlated with the average abundance of this species. Liriope tetraphylla caused erythematous-maculopapular lesions accompanied by painless pruritus; C. lactea caused erythematous-vesicular lesions of moderate pain and O. sambaquiensis caused linear erythematous-edematous lesions with severe pain and residual hyperpigmentation. At present, there is no specific treatment for poisoning, the differential therapy is symptomatic. The recommended actions are common for all three species: wash the skin with physiological solution or clean sea water and apply cold compresses.
Descritores: Venenos de Cnidários
-Envenenamento
FUNERAL RITESABDOMINAL INJURIES
Limites: Humanos
Responsável: AR393.1 - Centro de Información y Documentación Dr H. Urquiola



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