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| Registros recuperados: 17 | |
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| Silva,Tiago F.; Casais-e-Silva,Luciana L.; Lira-da-Silva,Rejâne M.. |
| O escorpião Tityus serrulatus é conhecido como a espécie mais importante, do ponto de vista médico, pois é o que causa os acidentes mais graves registrados para o território brasileiro. Este trabalho trata da caracterização do veneno do escorpião T. serrulatus, através da obtenção da DL50 e determinação da capacidade em induzir edema pulmonar, em ratos. O veneno foi obtido através de estímulo elétrico. A toxicidade foi determinada através da avaliação da DL50, pelo método de Finney (1971). Os valores demonstraram a baixa toxicidade do veneno (96,16 mg/camundongo), que corresponde a 3 - 7 vezes menos tóxico que venenos de espécimes de outras regiões do Brasil. O veneno testado também não induziu edema pulmonar, avaliado através da diferença entre o peso do... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Escorpião; Veneno; Tityus; Tityus serrulatus. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000200023 |
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| Pinto,MCL; Melo,MB; Cruz,ML; Verçosa Junior,D; Melo,MM. |
| Accidental envenomation caused by Tityus serrulatus scorpions is very common in Brazil and may result in serious cardiorespiratory alterations that are frequently fatal to children. In the present study, the effects of T. serrulatus venom on the cardiorespiratory system of recently weaned male Wistar rats were evaluated. Fifteen animals were distributed into three groups (n = 5). The control group A received 400 μL ultrapure water by subcutaneous injection, while the experimental groups B and C were injected with scorpion venom (100 and 450 μg, respectively, in 400 μL water). Electrocardiogram (ECG) traces were obtained prior to the experiment, at five-minute intervals up to 30 minutes after treatment. At 40 minutes after envenomation, the animals had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tityus serrulatus; Rats; Electrocardiography; CK; CK-MB; Troponin; Pulmonary hemorrhages. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000200008 |
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| CARVALHO,F. F.; NENCIONI,A. L. A.; LEBRUN,I.; DORCE,V. A. C.; SANDOVAL,M. R. L.. |
| It has been previously shown that the crude venom of Tityus serrulatus can cause convulsions. This study was designed to investigate the neurotoxic effects of B, C, G, and K fractions isolated from this venom. Intravenous injection of these fractions in mice (0.6 - 6.0 mg/kg body weight) showed that the C fraction is a potent convulsant and G fraction decreased the threshold for tonic hand limb extension elicited by transauricular electroshock. Unilateral injection of B, C, and K fractions, but not G fraction, into the hippocampus of rats (0.6 - 6.0 µg) caused electroencephalographic alterations consisting of spikes and epileptic discharges that began in the hippocampus and evolved to the cortex. The following motor signs were observed: movements of facial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Scorpion fractions; Electroshock; Seizure; Neurodegeneration; EEG record; Hippocampus; Tityus serrulatus. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000200008 |
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| Pinto,M.C.L.; Melo,M.M.; Costa,M.E.R.; Labarrere,C.R.. |
| The hematological and biochemical profiles of newly weaned rats submitted to experimental poisoning with T. serrulatus venom were evaluated. Fifteen recently weaned male Wistar rats (mean weight 130g) were distributed into three equal groups (n = 5). Animals in the control group (group A) received a subcutaneous injection of 400μL of ultra-pure water, while those in the experimental groups received, by identical route, 400μL of a solution containing 100μg (group B) or 450μg (group C) of scorpion venom dissolved in ultra-pure water. Red blood cells indexes, and differential leukocyte and total platelet counts were determined, together with levels of serum glucose, urea, creatinine, lactic dehydrogenase, aspartate aminotransferase, amylase, insulin, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rat; Tityus serrulatus; Scorpion; Experimental envenoming; Hematology; Biochemestry. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000200015 |
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| Ribeiro,E.L.; Melo,M.M.; Pinto,M.C.L.; Labarrère,C.R.; Guimarães,P.T.C.; Paes,P.R.O.; Leme,F.O.P.. |
| Avaliou-se o hemograma de 12 cães adultos, saudáveis (14,2±5,4kg) após a inoculação de veneno do escorpião amarelo (Tityus serrulatus). Os animais foram distribuídos em dois grupos (G), com seis em cada: os do GI foram usados como controle e receberam 0,5mL de salina tamponada com fosfato (PBS) por via subcutânea (SC) na face medial da coxa esquerda (FMCE), e os do GII receberam veneno liofilizado do T. serrulatus (250µg/kg) diluído em PBS por via SC na FMCE. Foram realizadas colheitas de sangue com anticoagulante EDTA a 10% antes da inoculação do veneno (T0) e após 2h, (T1), 6h (T2), 12h (T3), 24h (T4), 48h (T5) e 72h (T6), para contagem de eritrócitos, leucócitos e plaquetas em aparelho contador eletrônico e esfregaços sanguíneos para contagem... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Cão; Escorpionismo; Tityus serrulatus; Hematologia. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000100019 |
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| The possibility of producing neutralizing antibodies against the lethal effects of scorpion toxins was evaluated in the mouse model by immunization with an immunogen devoid of toxicity. A toxic fraction (5 mg) from the venom of the scorpion Tityus serrulatus was entrapped in sphingomyelin-cholesterol liposomes. The liposomes were treated for 1 h at 37oC with a 1% (w/w) trypsin solution in 0.2 M sodium carbonate buffer, pH 8.3. This treatment led to a strong reduction in venom toxicity. Immunization was performed as follows: mice were injected sc with 20 µg of the liposome-entrapped toxic fraction on days 1 and 21 and a final injection (20 µg) was administered ip on day 36. After injection of the immunogen, all mice developed an IgG response which was shown... |
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Palavras-chave: Liposomes; Neutralizing antibodies; Tityus serrulatus; Immunization; Toxins. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000700010 |
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| Lima,Priscila C.; Bordon,Karla C. F.; Pucca,Manuela B.; Cerni,Felipe A.; Zoccal,Karina F.; Faccioli,Lucia H.; Arantes,Eliane C.. |
| Abstract Background The yellow scorpion Tityus serrulatus (Ts) is responsible for the highest number of accidents and the most severe scorpion envenoming in Brazil. Although its venom has been studied since the 1950s, it presents a number of orphan peptides that have not been studied so far. The objective of our research was to isolate and identify the components present in the fractions VIIIA and VIIIB of Ts venom, in order to search for a novel toxin. The major isolated toxins were further investigated for macrophage modulation. Methods The fractions VIIIA and VIIIB, obtained from Ts venom cation exchange chromatography, were rechromatographed on a C18 column (4.6 × 250 mm) followed by a reversed-phase chromatography using another C18 column (2.1 ×... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-KTx; Cytokine; Interleukin; Neurotoxin; Pro-inflammatory; Scorpion venom; Tityus serrulatus. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100353 |
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| Ribeiro,E.L.; Melo,M.M.. |
| Protein profile of twelve healthy adult dogs averaging 14.2±5.4kg was evaluated after the inoculation of yellow scorpion venom (Tityus serrulatus). The animals were randomly divided in two experimental groups (G) (n= 6): GI control, which received 0.5mL of phosphate buffered saline (PBS) subcutaneously in the medial side of the left thigh (MSLT), and GII which received T. serrulatus venom (250μg/kg), diluted in 0.5mL of PBS subcutaneously in the MSLT. Blood samples were collected before the venom inoculation (time zero) and after 2, 6, 12, 24, 48 and 72h to obtain serum for measurement of total proteins. The fractionated protein profile was done by electrophoresis on agarose films using Tris and Amido Black staining and quantification of albumin and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cão; Proteína total; Albumina; Globulinas; Tityus serrulatus. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000100031 |
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| Amorim,Fernanda Gobbi; Longhim,Heloisa Tavoni; Cologna,Camila Takeno; Degueldre,Michel; Pauw,Edwin De; Quinton,Loïc; Arantes,Eliane Candiani. |
| Abstract Background: Tityus serrulatus venom (Ts venom) is a complex mixture of several compounds with biotechnological and therapeutical potentials, which highlights the importance of the identification and characterization of these components. Although a considerable number of studies have been dedicated to the characterization of this complex cocktail, there is still a limitation of knowledge concerning its venom composition. Most of Ts venom studies aim to isolate and characterize their neurotoxins, which are small, basic proteins and are eluted with high buffer concentrations on cation exchange chromatography. The first and largest fraction from carboxymethyl cellulose-52 (CMC-52) chromatography of Ts venom, named fraction I (Fr I), is a mixture of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tityus serrulatus; Scorpion venom; Enzymes; Proteases; ACE inhibitors; Proteome. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992019000100308 |
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| Hoshino,K.; Moura,A. T. V.; De Paula,H. M. G.. |
| The preferred temperature of the yellow scorpion Tityus serrulatus was investigated since its dispersion is a matter of concern. Adult T. serrulatus, weighing 1.24 + 0.20 g (mean + sd) and with a standard length of 59.3 + 2.5 mm, were used. A metallic corridor (120 cm long, 5 cm large and 10 cm high) with thermal gradient ranging from 0°C to 40°C was used. Tityus serrulatus chose and stayed in temperatures ranging from 14°C to 38°C when safe conditions were offered (dark and thigmotactic stimuli). The number of animals that remained in the 11°C-20°C, 21°C-30°C, and 31°C-40°C temperature zones were 8, 8, and 9, respectively. The chi-square test (degree of freedom = 2) showed that differences were not significant (p>0.05). Some animals moved to lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tityus serrulatus; Scorpion; Temperature; Thermal gradient; Zoogeography. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000100005 |
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| Oliveira,Guilherme Honda de; Cerni,Felipe Augusto; Cardoso,Iara Aimê; Arantes,Eliane Candiani; Pucca,Manuela Berto. |
| Abstract Background In Brazil, accidents with venomous animals are considered a public health problem. Tityus serrulatus (Ts), popularly known as the yellow scorpion, is most frequently responsible for the severe accidents in the country. Ts envenoming can cause several signs and symptoms classified according to their clinical manifestations as mild, moderate or severe. Furthermore, the victims usually present biochemical alterations, including hyperglycemia. Nevertheless, Ts envenoming and its induced hyperglycemia were never studied or documented in a patient with diabetes mellitus (DM). Therefore, this is the first study to evaluate the glycemia during Ts envenoming using a diabetic animal model (NOD, non-obese diabetic). Methods Female mice (BALB/c... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tityus serrulatus; Diabetes mellitus; Scorpion venom; NOD mice; Glycemia. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100319 |
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| Registros recuperados: 17 | |
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