Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 69
Filtrar
Mais filtros

Intervalo de ano de publicação
1.
Lett Appl Microbiol ; 61(6): 588-95, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26394238

RESUMO

UNLABELLED: Coffee is among the most preferred nonalcoholic drinks, and its consumption is distributed globally. During the coffee fruiting process, however, a large amount of waste is generated in the form of pulp, mucilage, husks, and water waste. The pulp and mucilage have the chemical composition to support the growth of micro-organisms and the production of value-added product. The aim was testify pulp coffee can be considered as carbon and inductor source for ß-glucosidase by Bacillus subtilis CCMA 0087. The response surface methodology (RSM) based on a central composite rotatable design (CCRD) was employed for this optimization. The methodology used in the optimization process was validated by testing the best conditions obtained and comparing them with the values predicted by the model. The highest ß-glucosidase production (22·59 UI ml(-1) ) was reached in 24 h of culturing at coffee pulp concentration of 36·8 g l(-1) , temperature of 36·6°C, and pH of 3·64. SIGNIFICANCE AND IMPACT OF THE STUDY: Countries whose economy is based on agricultural activities generate a great deal of liquid and solid waste. Thus, it is important to develop new alternatives for using this waste rather than disposing it in the environment. The production of enzymes, and particularly cellulase, is one such alternative. In this study, we proposed to produce ß-glucosidase production from pulp coffee extract using a Bacillus subtilis strain.


Assuntos
Bacillus subtilis/metabolismo , Reatores Biológicos/microbiologia , Café/metabolismo , Mucilagem Vegetal/metabolismo , beta-Glucosidase/biossíntese , Carbono , Celulase/biossíntese , Fermentação , Concentração de Íons de Hidrogênio , Temperatura , Resíduos
2.
Braz J Med Biol Res ; 55: e12038, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35703681

RESUMO

The aim of this study was to review the symptomatic manifestations of COVID-19 in children in the scientific literature. An integrative review of studies published between December 2019 and September 5, 2021, from the Medical Literature Analysis and Retrieval System Online, Web of Science, Scopus, Literatura Latino-Americana em Ciência de Saúde, and Base de Dados de Enfermagem databases, was carried out to answer the following research question: What symptomatic manifestations does COVID-19 cause in children?". Twenty articles were included. The main symptoms described were fever, cough, diarrhea, vomiting, sore throat, dyspnea, headache, abdominal pain, malaise, and weakness or tiredness. The findings of this review can contribute to the diagnosis and clinical decision-making of the health team by providing information that facilitates the identification of COVID-19 in the target population, favoring early identification, better care, and consequently a better prognosis.


Assuntos
COVID-19 , Criança , Tosse/etiologia , Humanos
3.
Rev Esp Anestesiol Reanim ; 57(4): 214-9, 2010 Apr.
Artigo em Espanhol | MEDLINE | ID: mdl-20499799

RESUMO

BACKGROUND AND OBJECTIVE: Thoracic epidural analgesia and patient-controlled analgesia (PCA) with intravenous fentanyl have both been shown to be effective in pediatric patients treated surgically for pectus excavatum using the Nuss procedure. We compare the efficacy and safety of these techniques. METHODS: Retrospective study of pediatric cases in which the Nuss procedure was used to treat pectus excavatum between October 1997 and February 2009. Weight, age, sex, and Haller index were analyzed. Pain was assessed every 8 hours on a visual analog scale of 0 to 10 or on a scale based on observation of distress (LLANTO scale). Daily use of analgesics was also recorded. The incidence of catheter-related complications or adverse events of treatment such as nausea, vomiting, and respiratory depression were also noted. RESULTS: We identified 31 patients in 2 groups: the epidural group (n=22) and the PCA group (n=9). Demographic characteristics, the incidences of complications or adverse events, and mean (SD) pain scores (epidural group, 1.8 [3.8]; PCA group, 2.1 [3.4]; P = .775) were statistically similar in the 2 groups. However, analgesic requirements and the duration of analgesic use in days differed significantly, at 2.9 (1.1) days in the epidural group and 5.9 (1.4) days in the PCA group (P =.001). CONCLUSIONS: The efficacy and safety of thoracic epidural analgesia is similar to that of PCA with intravenous fentanyl, although the use of epidural analgesia is associated with a markedly shorter duration of requirement for postoperative analgesia.


Assuntos
Analgesia Controlada pelo Paciente , Analgésicos Opioides/administração & dosagem , Cardioversão Elétrica , Fentanila/administração & dosagem , Tórax em Funil/cirurgia , Criança , Feminino , Humanos , Infusões Intravenosas , Masculino , Procedimentos Ortopédicos/métodos , Estudos Retrospectivos
4.
Braz. j. med. biol. res ; 55: e12038, 2022. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1384137

RESUMO

The aim of this study was to review the symptomatic manifestations of COVID-19 in children in the scientific literature. An integrative review of studies published between December 2019 and September 5, 2021, from the Medical Literature Analysis and Retrieval System Online, Web of Science, Scopus, Literatura Latino-Americana em Ciência de Saúde, and Base de Dados de Enfermagem databases, was carried out to answer the following research question: What symptomatic manifestations does COVID-19 cause in children?". Twenty articles were included. The main symptoms described were fever, cough, diarrhea, vomiting, sore throat, dyspnea, headache, abdominal pain, malaise, and weakness or tiredness. The findings of this review can contribute to the diagnosis and clinical decision-making of the health team by providing information that facilitates the identification of COVID-19 in the target population, favoring early identification, better care, and consequently a better prognosis.

5.
Braz J Med Biol Res ; 39(7): 873-81, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16862277

RESUMO

The Northeast region is the location of most cases of acute hepatitis A virus (HAV) in Brazil. In the present study, the genotypes of HAV strains from Pernambuco State, one of most populous states in the Northeast region, were characterized. Blood samples positive for anti-HAV IgM from 145 individuals (mean age = 29.1 years), collected during 2002 and 2003, were submitted to nested RT-PCR for amplification of the 5'non-translated region (5'NTR) and VP1/2A regions of the HAV genome. The VP1/2A and 5'NTR regions were amplified in 39 and 21% of the samples, respectively. Nucleotide sequencing was carried out in 46% of VP1/2A and in 53% of 5'NTR isolates. The identity in nucleotide sequence of the VP1/2A region ranged from 93.6 to 100.0%. Phylogenetic analysis of the VP1/2A sequences showed that 65% belong to sub-genotype IA and 35% to sub-genotype IB. Co-circulation of both sub-genotypes was observed in the two years studied. Distinct clusters of highly related sequences were observed in both sub-genotypes, suggesting endemic circulation of HAV strains in this area. In the 5'NTR isolates, 92.7-99.2% identity was observed and two isolates presented one deletion at position 413. Phylogenetic analysis showed that genotype IA strains cluster in the tree in the same way as genotype IB strains, but one IIIA isolate from Spain clusters with genotype IB strains. These results do not allow us to state that 5'NTR could be used to genotype HAV sequences. This is the first report of co-circulation of sub-genotypes IA and IB in this region, providing additional information about the molecular epidemiology of HAV strains in Brazil.


Assuntos
Regiões 5' não Traduzidas/genética , Vírus da Hepatite A/genética , Hepatite A/virologia , RNA Viral/análise , Proteínas Estruturais Virais/genética , Adulto , Sequência de Bases , Brasil , Feminino , Genoma Viral , Genótipo , Vírus da Hepatite A/classificação , Vírus da Hepatite A/isolamento & purificação , Humanos , Masculino , Técnicas de Amplificação de Ácido Nucleico , Filogenia , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Análise de Sequência de RNA
6.
Arq. bras. med. vet. zootec. (Online) ; 73(2): 513-516, Mar.-Apr. 2021. graf
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1248925

RESUMO

A doxorrubicina (dox) é um medicamento antineoplásico que induz cardiotoxicidade por estresse oxidativo. Os flavonoides são antioxidantes extraídos de plantas como Camellia sinensis e Arrabidaea chica (Fridericia chica). Esta pesquisa objetivou avaliar efeitos protetores do extrato de A. chica (AC), comparado ao de C. sinensis (CS), frente ao estresse oxidativo induzido pela dox, no coração. Cardiomiócitos e células neoplásicas MDA-MB 231 foram incubados com AC e CS. Depois, adicionou-se dox e avaliaram-se taxas de viabilidade e morte celular. A citometria de fluxo para o ensaio de iodeto de propídeo (IP) em cardiomiócitos mostrou as seguintes taxas de morte celular: controle 53%; dox 78% (maior que controle, P=0,015); AC_12,5µg/mL + dox 65% (menor que dox, P=0,031); AC_25µg/mL + dox 62% (menor que dox, P=0,028); AC_50µg/mL + dox 63% (menor que dox, P=0,030); CS_12,5µg/mL + dox 71% (menor que dox, P=0,040); CS_25µg/ml + dox 69% (menor que dox, P=0,037); CS_50µg/mL + dox 74% (menor que dox, P=0,044). Resultados das células MDA-MB 231 mostraram que nenhum extrato interferiu na atividade antitumoral da dox. Os dados de IP foram corroborados pelos de MTT. Este estudo reporta promissora utilização de A. chica na prevenção da cardiotoxicidade induzida pela dox.(AU)


Assuntos
Animais , Ratos , Extratos Vegetais/uso terapêutico , Doxorrubicina , Bignoniaceae/química , Cardiotoxicidade/terapia , Cardiotoxicidade/veterinária , Plantas Medicinais , Flavonoides/uso terapêutico
7.
Toxicon ; 103: 129-34, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26140842

RESUMO

Toxic effects of Peruvian Hadruroides lunatus scorpion venom on different biochemical and enzymatic parameters in blood serum of Wistar rats and Swiss mice were determined after experimental envenomation. An increase in enzymatic activities of Aspartate Aminotransferase (AST), Lactate Dehydrogenase (LDH) and levels of serum protein and albumin were observed while a decrease in creatinine level in serum was perceived after 30 min of envenomation. No alterations in urea levels and in kidney histology were detected in the envenomed rats. The global leukocytes count was diminished, with decrease in lymphocytes, eosinophils and neutrophils levels in the bloodstream, while no alterations were found in hematological parameters of red series in rats injected with H. lunatus venom. IL-2, IL-4, IL-6, INF-γ, TNF, IL-17A and IL-10 levels were evaluated 0.5, 3 and 6 h after experimental envenomation of mice with H. lunatus venom. From all the analyzed cytokines, only IL-6 showed an increase in serum levels. Taken together, these results point out that envenomation by H. lunatus can impair hematological and immunological parameters and therefore might be monitored in accidents involving this species.


Assuntos
Picadas de Escorpião/patologia , Venenos de Escorpião/toxicidade , Escorpiões/metabolismo , Animais , Aspartato Aminotransferases/sangue , Creatinina/sangue , Interferon gama/sangue , Interleucina-10/sangue , Interleucina-17/sangue , Interleucina-2/sangue , Interleucina-4/sangue , Interleucina-6/sangue , L-Lactato Desidrogenase/sangue , Masculino , Camundongos , Ratos , Ratos Wistar , Albumina Sérica/metabolismo
8.
Toxicon ; 99: 109-17, 2015 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-25817000

RESUMO

This communication describes the general characteristics of the venom from the Brazilian scorpion Tityus fasciolatus, which is an endemic species found in the central Brazil (States of Goiás and Minas Gerais), being responsible for sting accidents in this area. The soluble venom obtained from this scorpion is toxic to mice being the LD50 is 2.984 mg/kg (subcutaneally). SDS-PAGE of the soluble venom resulted in 10 fractions ranged in size from 6 to 10-80 kDa. Sheep were employed for anti-T. fasciolatus venom serum production. Western blotting analysis showed that most of these venom proteins are immunogenic. T. fasciolatus anti-venom revealed consistent cross-reactivity with venom antigens from Tityus serrulatus. Using known primers for T. serrulatus toxins, we have identified three toxins sequences from T. fasciolatus venom. Linear epitopes of these toxins were localized and fifty-five overlapping pentadecapeptides covering complete amino acid sequence of the three toxins were synthesized in cellulose membrane (spot-synthesis technique). The epitopes were located on the 3D structures and some important residues for structure/function were identified.


Assuntos
Antivenenos/análise , Proteínas de Artrópodes/toxicidade , Modelos Moleculares , Picadas de Escorpião/imunologia , Venenos de Escorpião/toxicidade , Escorpiões/imunologia , Sequência de Aminoácidos , Animais , Antivenenos/metabolismo , Antivenenos/uso terapêutico , Proteínas de Artrópodes/antagonistas & inibidores , Proteínas de Artrópodes/química , Proteínas de Artrópodes/genética , Brasil , Reações Cruzadas , Bases de Dados de Proteínas , Mapeamento de Epitopos , Dose Letal Mediana , Masculino , Camundongos , Dados de Sequência Molecular , Peso Molecular , Conformação Proteica , Picadas de Escorpião/sangue , Venenos de Escorpião/antagonistas & inibidores , Venenos de Escorpião/química , Venenos de Escorpião/metabolismo , Escorpiões/fisiologia , Alinhamento de Sequência , Homologia de Sequência de Aminoácidos , Ovinos
9.
Braz J Med Biol Res ; 35(7): 823-6, 2002 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-12131923

RESUMO

The aim of the present study was to determine the effect of a regional basic diet (RBD) on the prevalence of caries in the molar teeth of rats of both sexes aged 23 days. The animals were divided into six groups of 10 rats each receiving the following diets for 30 and 60 days after weaning: RBD, a cariogenic diet, and a commercial diet. The prevalence and penetration of caries in the molar teeth of the rats was then analyzed. The RBD produced caries in 37.5% of the teeth of animals fed 30 days, and in 83.4% of animals fed 60 days, while the cariogenic diet produced caries in 72.5% and 77.5% of the teeth of animals fed 30 and 60 days, respectively. Rats fed the RBD for 30 days had caries in the enamel in 38% of their teeth, 48% had superficial dentin caries, and 7.5% moderate dentin caries. The effect of the RBD did not differ significantly from that of the cariogenic diet in terms of the presence of caries in rats fed 60 days. The penetration depth of the caries produced by the RBD was the same as that produced by the cariogenic diet. Our results show that the RBD has the same cariogenic potential as the cariogenic diet. Since the RBD is the only option for the low-income population, there should be a study of how to compensate for the cariogenicity of this diet.


Assuntos
Cariogênicos/efeitos adversos , Cárie Dentária/etiologia , Dieta Cariogênica , Animais , Brasil , Cárie Dentária/prevenção & controle , Testes de Atividade de Cárie Dentária , Feminino , Masculino , Prevalência , Ratos , Ratos Wistar
10.
Vet Parasitol ; 101(1): 45-52, 2001 Oct 31.
Artigo em Inglês | MEDLINE | ID: mdl-11587832

RESUMO

The occurrence of bovine external otitis in tropical regions is predominantly assigned to parasitic infections by rhabditiform nematodes and infestations by mites of the genus Raillietia. This research had the purpose of investigating the prevalence of parasitic otitis in the dry and rainy seasons of Minas Gerais and correlating it with variables age, breed and the presence of horns. The secretion or cerumen of 981 cattle was collected with sterile swabs, placed in test tubes and exposed to sunlight for the identification of clinical infections caused by rhabditiform nematodes. The ear canals of 109 animals were flushed to study the occurrence of mites of the genus Raillietia. Clinical otitis caused by rhabditiform nematodes was observed only in animals of the Gyr breed, affecting 169 (60.1%) of the total (278) of these cattle. The prevalence of otitis in this breed was significantly higher for mature adult cows (P<0.001) and in cows with horns (P<0.001). In a total of nine animals suspected of raillietiosis, the examinations revealed the presence of Raillietia spp. in two Dutch cows. These results demonstrate that treatment must be focused on adult Gyr cattle with horns. This and future studies with an emphasis on epidemiological aspects may contribute to development of alternative approaches to reduce disease.


Assuntos
Doenças dos Bovinos/epidemiologia , Otite Externa/veterinária , Fatores Etários , Animais , Brasil/epidemiologia , Cruzamento , Bovinos , Doenças dos Bovinos/genética , Doenças dos Bovinos/parasitologia , Feminino , Predisposição Genética para Doença , Cornos/parasitologia , Infestações por Ácaros/epidemiologia , Infestações por Ácaros/veterinária , Otite Externa/epidemiologia , Otite Externa/parasitologia , Prevalência , Infecções por Rhabditida/epidemiologia , Infecções por Rhabditida/veterinária , Rhabditoidea , Estações do Ano
11.
J Ethnopharmacol ; 15(3): 261-9, 1986 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-3724206

RESUMO

Thirty two medicinal plants used popularly for their proposed diuretic and/or antihypertensive properties have been tested for antihypertensive effects in conscious unrestrained rats. All extractions were made in aqueous ethanol (50:50 by vol.) at low temperature. Before administration of the extracts the alcohol was evaporated. The extracts (40 ml/kg) were always administered per os. Antihypertensive effects in SHR rats were observed after the administration of Allium sativum Linn. (bulb), Olea europaea Linn. (leaf) and Hedychium coronarium Koen. (leaf-blade).


Assuntos
Anti-Hipertensivos/farmacologia , Plantas Medicinais/análise , Animais , Pressão Sanguínea/efeitos dos fármacos , Brasil , Feminino , Frequência Cardíaca/efeitos dos fármacos , Masculino , Extratos Vegetais/farmacologia , Ratos , Ratos Endogâmicos SHR
12.
J Ethnopharmacol ; 24(1): 19-29, 1988 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-3199837

RESUMO

Extracts of 32 medicinal plants used popularly for their presumed diuretic and/or antihypertensive properties were tested for diuretic effects in conscious unrestrained rats. Extracts were made using aqueous ethanol (50:50, v/v) at 4-10 degrees C. When given orally at a dose of 40 ml/kg, a majority of the ethanol-free extracts produced a more pronounced diuresis than would be expected from the potassium concentration of the extracts. The most significant diuretic effect was observed with Hedychium coronarium sheath and leaf-blade extracts.


Assuntos
Diuréticos/isolamento & purificação , Plantas Medicinais , Animais , Brasil , Diurese/efeitos dos fármacos , Avaliação Pré-Clínica de Medicamentos , Feminino , Concentração de Íons de Hidrogênio , Extratos Vegetais/farmacologia , Plantas Medicinais/análise , Potássio/análise , Ratos , Ratos Endogâmicos , Especificidade da Espécie
13.
Arq. bras. med. vet. zootec. (Online) ; 71(1): 349-352, jan.-fev. 2019. ilus
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1038585

RESUMO

Este estudo objetiva reportar a ocorrência de apoptose in vivo induzida pelo veneno da serpente Bothrops alternatus em células musculares esqueléticas. Cinco coelhos machos, adultos, receberam 150µg/kg de veneno no músculo vasto lateral, enquanto outros cinco animais receberam 0,1% de BSA diluído em PBS no mesmo local. Após 12 horas, os animais foram eutanasiados, e amostras do local de inoculação foram coletadas para análise histopatológica. Foram evidenciadas necrose e hemorragia nas células musculares. Além disso, a análise imuno-histoquímica para identificação de caspase-3 ativada revelou marcações granulares e agregadas no citoplasma das células musculares, compatíveis com o processo de apoptose. Este é o primeiro relato que confirma o veneno de B. alternatus como causador de apoptose in vivo em células musculares esqueléticas.(AU)


Assuntos
Animais , Coelhos , Apoptose/efeitos dos fármacos , Bothrops , Venenos de Crotalídeos/intoxicação , Músculos/fisiopatologia
14.
Arq. bras. med. vet. zootec. (Online) ; 70(5): 1529-1538, set.-out. 2018. tab, graf
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-947264

RESUMO

Twelve adult rabbits were distributed in three groups and received on the femoral biceps region, via intradermal injection (ID), 25µg of Bothrops alternatus venom dissolved in NaCl 0.9% and diluted in 0.25mL of phosphate buffered saline (PBS). Thirty minutes later, the group G1 received 0.25mL of phosphate buffered saline (PBS) ID while to G2 and G3 25mg of ethylenediamine tetraacetic acid (EDTA) dissolved in 0.25mL of PBS were administered via intramuscular (IM) and intravenous (IV) injection, respectively. Evaluations included local lesion and blood profile of all animals, before (time zero) and at 1, 2, 3, 4, 5, 6, 12, 18 and 24h after venom administration. All animal treated with PBS (G1) and EDTA IV (G3) presented increase of nociceptive stimuli at the site of inoculation of the venom, followed by moderate edema that persisted for 24h. Animals treated with IM EDTA (G2) only manifested increase of nociceptive stimuli at the site of injection 1h after treatment with discrete local edema between 12 and 24h. In relation to the local hemorrhagic halo no differences were found amongst the studied groups. Blood profile revealed significant decrease of segmented neutrophils in all groups. There was also increase in triglycerides and decrease in total protein and albumin in all groups. The local lesion was not altered by the treatments.(AU)


Doze coelhos adultos, distribuídos em três grupos, receberam, na região de bíceps femoral, por via intradérmica (ID), 25µg de veneno de Bothrops alternatus, dissolvidos em NaCl 09%, diluído em 0,25mL de tampão salina fosfato (PBS). Trinta minutos após o desafio, o grupo G1 recebeu 0,25mL de (PBS) ID, e os grupos G2 e G3 receberam 25mg de ácido etilenodiamino tetra-acético (EDTA), dissolvidos em mL de PBS por via intramuscular (IM) e intravenosa (IV), respectivamente. Foram avaliados lesão local e perfil sanguíneo de todos os animais, antes - tempo zero, e à uma, às duas, três, quatro, cinco, seis, 12, 18 e 24 horas após a injeção do veneno. Tanto os animais tratados com PBS (G1) como os animais tratados com EDTA IV (G3) apresentaram aumento do estímulo nociceptivo no local da administração do veneno, seguido por moderado edema, que perdurou por 24h. Os animais tratados com EDTA IM (G2) somente manifestaram aumento do estímulo nociceptivo local uma hora após tratamento e discreto edema local entre 12 e 24 horas. Em relação ao halo hemorrágico, não houve diferença entre os três grupos estudados. No perfil hematológico, observou-se diminuição significativa dos neutrófilos segmentados nos três grupos estudados. Da mesma forma, houve aumento dos triglicerídeos e diminuição da proteína total e albumina em todos os grupos. Conclui-se que a lesão local não foi alterada pelos tratamentos.(AU)


Assuntos
Animais , Bothrops/imunologia , Ácido Edético/análogos & derivados , Ácido Edético/uso terapêutico , Ferimentos e Lesões/terapia
15.
Toxicon ; 73: 121-9, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23850427

RESUMO

The aim of this paper is to report the study of hepatogenous photosensitization in buffaloes during two outbreaks provoked by ingestion of Brachiaria decumbens in Minas Gerais state, Brazil. Ten young buffaloes in outbreak 1 and seven buffaloes in outbreak 2 were intoxicated by B. decumbens. Nine clinically healthy buffaloes raised under the same conditions as the sick animals served as the control group. All animals were subjected to clinical examination, and serum was collected to measure gamma-glutamyl transferase (GGT), aspartate aminotransferase (AST), direct bilirubin (DB), indirect bilirubin (IB) and total bilirubin (TB) as indicators of liver function and urea and creatinine as indicators of renal function. Histopathology of liver fragments from five different animals was carried out. During the outbreaks and every two months for one year, samples of grass from paddocks where the animals got sick were collected for quantitative evaluation of the saponin protodioscin, combined with observations of pasture characteristics and daily rainfall. Clinical signs included apathy, weight loss, restlessness, scar retraction of the ears and intense itching at the skin lesions, mainly on the rump, the tail head, neck and hindlimbs, similar to the signs observed in other ruminants. Only the GGT enzyme presented significantly different (P < 0.01) serum levels between intoxicated animals (n = 17) and healthy animals (n = 9), indicating liver damage in buffaloes bred in B. decumbens pastures. Microscopy of the liver showed foamy macrophages and lesions of liver disease associated with the presence of crystals in the bile ducts, which have also been found in sheep and cattle poisoned by grasses of the genus Brachiaria. During the outbreaks, protodioscin levels were higher than 3%, and shortly after, these levels were reduced to less than 0.80%, suggesting a hepatic injury etiology. The outbreaks took place at the beginning of the rainy season, and there was a positive correlation between saponin and the amount of rainfall, as well as between saponin and the amount of green leaves in the pasture. These findings indicate that the grass was more toxic in this period. This is the first report of photosensitization by B. decumbens in buffalo.


Assuntos
Brachiaria/química , Búfalos , Surtos de Doenças/veterinária , Transtornos de Fotossensibilidade/induzido quimicamente , Transtornos de Fotossensibilidade/epidemiologia , Transtornos de Fotossensibilidade/veterinária , Saponinas/toxicidade , Animais , Brasil/epidemiologia , Fígado/metabolismo , Fígado/patologia , Chuva , Saponinas/análise , Estações do Ano , Pele/patologia , gama-Glutamiltransferase/sangue
16.
Toxicon ; 60(5): 934-42, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22750532

RESUMO

This communication describes the general biochemical properties and some immunological characteristics of the venom from the Peruvian scorpion Hadruroides lunatus, which is the most medically relevant species in Peru. The soluble venom of this scorpion is toxic to mice, the LD50 determined was 0.1 mg/kg and 21.55 mg/kg when the venom was injected intracranial or intraperitoneally, respectively. The soluble venom displayed proteolytic, hyaluronidasic, phospholipasic and cardiotoxic activities. High performance liquid chromatography of the soluble venom resulted in the separation of 20 fractions. Two peptides with phospholipasic activity were isolated to homogeneity and their molecular masses determined by mass spectrometry (MALDI TOF). Anti-H. lunatus venom sera were produced in rabbits. Western blotting analysis showed that most of the protein content of this venom is immunogenic. H. lunatus anti-venom displayed consistent cross-reactivity with venom antigens from the new World-scorpions Tityus serrulatus and Centruroides sculpturatus venoms; however, a weaker reactivity was observed against the venom antigens from the old World-scorpion Androctonus australis Hector.


Assuntos
Venenos de Escorpião/química , Venenos de Escorpião/imunologia , Venenos de Escorpião/intoxicação , Animais , Western Blotting , Fracionamento Químico , Cromatografia Líquida de Alta Pressão , Reações Cruzadas , Ensaio de Imunoadsorção Enzimática , Hialuronoglucosaminidase/metabolismo , Soros Imunes/imunologia , Dose Letal Mediana , Camundongos , Camundongos Endogâmicos C57BL , Peru , Fosfolipases A2/metabolismo , Proteólise , Coelhos , Ratos , Ratos Wistar , Especificidade da Espécie , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz
17.
Arq. bras. med. vet. zootec ; 68(4): 894-900, jul.-ago. 2016. tab, graf, ilus
Artigo em Inglês | LILACS, VETINDEX | ID: lil-792458

RESUMO

We evaluated 160 hip joint radiographs of 40 dogs of different large breeds (25 females and 15 males) from the metropolitan area of Belo Horizonte, Minas Gerais, Brazil. The radiographs of each dog were obtained at two different stages: stage 1 (mean 7.23 months) and stage 2 (mean 14.25). The conventional radiographic method (CRM) and the radiographic distraction method (RDM) were used, carried out in both stages. CRM measured the Norberg angle (NA), the angle of inclination (AI) and evaluated the presence of degenerative joint disease (DJD). The MRD was performed to establish the distraction index (DI). The aims were to evaluate the presence of the Morgan line and other signs of DJD and correlate them with the degree of canine hip dysplasia (CHD) and also check if the DI greater than 0.3 (first stage) was associated with the presence of ML (second stage). It was found that DI, AI and changes of femoral neck and the formation of osteophytes were associated with the presence of ML. It was observed that if the DI is greater than 0.3 at the first stage, the chance of a positive outcome of ML in the second stage increases by 7.2 times. Thus, 49 joints showed DI > 0.3 at the first stage, in which 31 (63.3 %) presented ML at the second stage. Of the 31 animals that showed DI ≤ 0.3 at first, six (19.4%) had LM at the second stage. There has been a significant association between the presence of ML and the degree of CHD. The more severe the CHD, the higher the percentage of positive ML results. Thus, among the 24 (60 %) animals that showed ML, 11 (45.83 %) were classified as severe dysplastics, 5 (20.83%) as moderate and 8 (33.33 %) as mild. None of the animals classified as normal or borderline presented ML. Among the 8 animals classified as mild dysplastics, 5 showed only ML as DJD.(AU)


Avaliaram-se 160 radiografias das articulações coxofemorais de 40 cães de diferentes raças de grande porte, provenientes de Belo Horizonte, Brasil. As radiografias de cada animal foram obtidas em dois momentos: um (média de 7,23 meses de idade) e dois (média de 14,25 meses). Utilizaram-se o método radiográfico convencional (MRC) e o método radiográfico em distração (MRD), ambos realizados nos dois momentos. No MRC, mensurou-se o ângulo de Norberg (AN), o ângulo de inclinação (AI) e avaliou-se a presença de doença articular degenerativa (DAD). O MRD foi realizado para se estabelecer o índice de distração (ID). Os objetivos foram avaliar a presença da linha Morgan (LM) e de outros sinais de DAD, correlacionando-os com o grau de displasia coxofemoral (DCF); além de se verificar se o ID maior que 0,3 (primeiro momento) possui associação com a presença de LM (segundo momento). Verificou-se que ID, AI e encurtamento e/ou espessamento do colo femoral e formação de osteófitos foram associados à presença da LM. Observou-se que, quando o ID era maior que 0,3 no primeiro momento, a chance de um resultado positivo da LM no segundo momento aumentava em 7,2 vezes. No primeiro momento, 49 articulações apresentaram ID > 0,3. Destas, 31 (63,3%) apresentaram LM no segundo momento. Dos 31 animais que apresentaram ID ≤ 0,3 no primeiro momento, seis (19,4%) desenvolveram LM no segundo momento. Houve associação significativa entre presença de LM com o grau de DCF, e quanto mais grave a DCF, maior foi o percentual de resultados positivos da LM. Dos 24 (60%) animais que apresentaram LM, 11 (45,83%) foram classificados como displásicos graves, cinco (20,83%) como médios e oito (33,33%) como leves. Nenhum dos animais considerados suspeitos ou normais apresentou LM. Dos oito animais classificados como displásicos leves, cinco apresentaram apenas LM como sinal de DAD.(AU)


Assuntos
Animais , Masculino , Feminino , Cães , Displasia Pélvica Canina , Osteoartrite/veterinária , Instabilidade Articular/veterinária , Radiografia/veterinária
18.
Arq. bras. med. vet. zootec ; 68(6): 1479-1486, nov.-dez. 2016. tab
Artigo em Português | LILACS, VETINDEX | ID: biblio-827958

RESUMO

RESUMO O capim Tifton-85 (Cynodon spp.) vem sendo utilizado na alimentação de equinos na forma de pré-secado (haylage) e feno, todavia não existem estudos conclusivos a respeito da influência da haylage sobre o estado de saúde dessa espécie. Portanto, esta pesquisa objetivou avaliar o perfil sanguíneo como indicador de higidez de éguas Quarto de Milha alimentadas com haylage e feno de Tifton-85. A gramínea utilizada foi cortada com 30 dias de crescimento. Para produção da haylage, a planta cortada permaneceu no campo até atingir 70% de matéria seca, quando foi colhida. Foram utilizadas 12 éguas Quarto de Milha, com idade entre oito e 12 anos e com peso vivo médio inicial de 451,6kg. Os animais foram distribuídos aleatoriamente em dois grupos (n=6), sendo o grupo 1 alimentado com feno e o grupo 2 alimentado com haylage, por um período de 28 dias. Foram realizadas cinco coletas de sangue em intervalos de uma semana, para a determinação do perfil hematológico. Em relação ao eritrograma, observou-se discreta diminuição da concentração de hemoglobina, do hematócrito e do volume globular médio (VGM) em ambos os grupos. No leucograma, houve aumento dos leucócitos totais nas coletas iniciais em ambos os grupos, mas sem significado clínico. Conclui-se que éguas adultas Quarto de Milha, após a ingestão de feno e haylage de Tifton-85, não apresentaram alterações no perfil hematológico que indicassem prejuízos à saúde.(AU)


ABSTRACT Tifton-85 grass (Cynodon spp) has been used in equine nutrition in the form of pre-dried (haylage) and hay, however, there are no conclusive studies about the influence of haylage on blood profile of this species. Therefore, the aim of this study was to evaluate the blood profile as health indicators of Quarter Horse mares were fed haylage and Tifton-85 hay. The used grass was cut at 30 days of growth. For the production of haylage, this plant remained cut in the field until it had 70% of dry matter, when it was collected. Twelve Quarter Horse mares, aged 8-12 years, with average weight of 451.58kg were used. The animals were distributed randomly into two groups (n= 6), group 1 fed hay and group 2 fed haylage, both for 28 days. Blood samples were collected at one week intervals each for determining the hematological parameters. In the erythrogram, a decrease in the hemoglobin concentration, packed cell volume and mean cell volume after the administration in both groups were detected. The white blood count increased in both groups, but the values remained within normal limits without clinical significance. In conclusion, adult Quarter Horse mares fed Tifton-85 hay and haylage showed no alterations in hematology.(AU)


Assuntos
Animais , Feminino , Adulto , Fenômenos Fisiológicos da Nutrição Animal , Cavalos/sangue , Pastagens , Contagem de Células Sanguíneas/veterinária , Conservação de Alimentos
19.
Arq. bras. med. vet. zootec ; 68(6): 1458-1464, nov.-dez. 2016. ilus
Artigo em Português | LILACS, VETINDEX | ID: biblio-827924

RESUMO

A ectopia ureteral é uma enfermidade congênita que se caracteriza quando um ou ambos os ureteres apresentam-se inseridos fora do seu local anatômico, com a inserção ocorrendo no útero, no colo da bexiga, na uretra ou na vagina, devido a uma diferenciação anormal dos ductos mesonéfricos e metanéfricos. Nos machos, a inserção pode ocorrer também nos ductos deferentes e na próstata. A incontinência urinária é o sinal clínico mais comumente associado ao ureter ectópico. O presente relato descreve um caso de ureter ectópico extramural unilateral, em um cão da raça Labrador Retriever de sete anos de idade, corrigido cirurgicamente, e mostra a importância dos exames radiográfico contrastado e ultrassonografia.(AU)


Ureteral ectopia is a congenital disease that is characterized when one or both ureters are shown inserted outside their anatomic site, with the possible insertion in the uterus, bladder neck, the urethra or vagina due to abnormal differentiation of ducts mesonephrics and metanephrics. In males the insertion can also occur in the vas deferens and prostate. Urinary incontinence is the most common clinical sign associated with ectopic ureter. This report describes a case of unilateral extramural ectopic ureter in a dog of the Labrador Retriever breed at seven years old surgically corrected, and shows the importance of contrast radiographic examination and ultrasound.(AU)


Assuntos
Animais , Cães , Coristoma/veterinária , Ureter/diagnóstico por imagem , Incontinência Urinária/veterinária
20.
Toxicon ; 55(6): 1132-7, 2010 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-20060851

RESUMO

The present study characterized envenomation in young rats by Tityus fasciolatus, an endemic scorpion to Central Brazilian and state of Minas Gerais. Electrocardiographic examinations were performed prior to treatment and every 5 min during the first 30 min after envenomation. The cardiac blood profile [creatine kinase, CK isoenzyme MB, lactate dehydrogenase, aspartate aminotransferase and troponina] together with macroscopic and microscopic alterations in the lungs and heart were evaluated. Envenomated animals showed ECG changes suggesting electrolytic imbalance, myocarditis and venom interference on the conduction tissue. Biochemical analyses indicated myocardial damage with high levels of CK, CK-MB and LDH. Macroscopic and microscopic findings included detection of pulmonary haemorrhages. In conclusion, T. fasciolatus venom leads to acute cardio-respiratory changes in young rats.


Assuntos
Cardiopatias/induzido quimicamente , Coração/efeitos dos fármacos , Pneumopatias/induzido quimicamente , Picadas de Escorpião/etiologia , Venenos de Escorpião/intoxicação , Escorpiões/fisiologia , Animais , Modelos Animais de Doenças , Eletrocardiografia , Coração/fisiopatologia , Cardiopatias/patologia , Cardiopatias/fisiopatologia , Hemorragia/induzido quimicamente , Hemorragia/fisiopatologia , Pneumopatias/patologia , Pneumopatias/fisiopatologia , Masculino , Miocardite/induzido quimicamente , Miocardite/fisiopatologia , Ratos , Ratos Wistar , Picadas de Escorpião/complicações , Picadas de Escorpião/fisiopatologia
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa