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1.
Sci Rep ; 12(1): 5049, 2022 03 23.
Artigo em Inglês | MEDLINE | ID: mdl-35322053

RESUMO

Mammalian captive dietary specialists like folivores are prone to gastrointestinal distress and primate dietary specialists suffer the greatest gut microbiome diversity losses in captivity compared to the wild. Marmosets represent another group of dietary specialists, exudivores that eat plant exudates, but whose microbiome remains relatively less studied. The common occurrence of gastrointestinal distress in captive marmosets prompted us to study the Callithrix gut microbiome composition and predictive function through bacterial 16S ribosomal RNA V4 region sequencing. We sampled 59 wild and captive Callithrix across four species and their hybrids. Host environment had a stronger effect on the gut microbiome than host taxon. Wild Callithrix gut microbiomes were enriched for Bifidobacterium, which process host-indigestible carbohydrates. Captive marmoset guts were enriched for Enterobacteriaceae, a family containing pathogenic bacteria. While gut microbiome function was similar across marmosets, Enterobacteriaceae seem to carry out most functional activities in captive host guts. More diverse bacterial taxa seem to perform gut functions in wild marmosets, with Bifidobacterium being important for carbohydrate metabolism. Captive marmosets showed gut microbiome composition aspects seen in human gastrointestinal diseases. Thus, captivity may perturb the exudivore gut microbiome, which raises implications for captive exudivore welfare and calls for husbandry modifications.


Assuntos
Microbioma Gastrointestinal , Animais , Bactérias/genética , Bifidobacterium/genética , Callithrix/genética , Fezes/microbiologia , Microbioma Gastrointestinal/genética , Mamíferos/genética , RNA Ribossômico 16S/genética
2.
Med Sci Sports Exerc ; 54(5): 807-813, 2022 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-35019903

RESUMO

PURPOSE: Resistance training (RT) combined with appropriate dietary intake can promote a concomitant increase in skeletal muscle mass (SMM) and reduction in fat mass, a condition termed body recomposition. This study's primary purpose was to explore the effects of protein ingestion on body recomposition after 24 wk of RT in older women. METHODS: Data from 130 untrained older women (68.7 ± 5.6 yr, 66.5 ± 11.5 kg, 155.5 ± 6.0 cm, and 27.4 ± 4.0 kg·m-2) across six studies were retrospectively analyzed. The participants were divided into tertiles according to their customary protein intake (g·kg-1·d-1): lower (LP; n = 45), moderate (MP; n = 42), and higher (HP; n = 43) protein intake. Participants performed a whole-body RT program carried out over 24 wk (eight exercises, three sets, 8-15 repetitions, three sessions a week). SMM and fat mass were determined by dual-energy x-ray absorptiometry. RESULTS: All groups increased SMM from baseline (P < 0.05), with the HP and MP groups showing greater increases than the LP group (LP, 2.3%; MP, 5.4%; and HP, 5.1%; P < 0.05). Reductions in fat mass were similar for all three groups (LP, 1.7%; MP, 3.7%; and HP, 3.1%; P > 0.05). The composite z-score of the percentage changes from pretraining to posttraining indicated greater positive body recomposition values for HP and MP compared with LP (P < 0.05). CONCLUSIONS: Results suggest that protein intake is a moderating variable for body recomposition in older women undergoing RT, with a low protein intake having a less favorable effect on body recomposition.


Assuntos
Treinamento Resistido , Absorciometria de Fóton , Idoso , Composição Corporal/fisiologia , Proteínas Alimentares , Feminino , Humanos , Pessoa de Meia-Idade , Músculo Esquelético/fisiologia , Estudos Retrospectivos
3.
BMC Genomics ; 22(1): 239, 2021 Apr 06.
Artigo em Inglês | MEDLINE | ID: mdl-33823806

RESUMO

BACKGROUND: Callithrix marmosets are a relatively young primate radiation, whose phylogeny is not yet fully resolved. These primates are naturally para- and allopatric, but three species with highly invasive potential have been introduced into the southeastern Brazilian Atlantic Forest by the pet trade. There, these species hybridize with each other and endangered, native congeners. We aimed here to reconstruct a robust Callithrix phylogeny and divergence time estimates, and identify the biogeographic origins of autochthonous and allochthonous Callithrix mitogenome lineages. We sequenced 49 mitogenomes from four species (C. aurita, C. geoffroyi, C. jacchus, C. penicillata) and anthropogenic hybrids (C. aurita x Callithrix sp., C. penicillata x C. jacchus, Callithrix sp. x Callithrix sp., C. penicillata x C. geoffroyi) via Sanger and whole genome sequencing. We combined these data with previously published Callithrix mitogenomes to analyze five Callithrix species in total. RESULTS: We report the complete sequence and organization of the C. aurita mitogenome. Phylogenetic analyses showed that C. aurita was the first to diverge within Callithrix 3.54 million years ago (Ma), while C. jacchus and C. penicillata lineages diverged most recently 0.5 Ma as sister clades. MtDNA clades of C. aurita, C. geoffroyi, and C. penicillata show intraspecific geographic structure, but C. penicillata clades appear polyphyletic. Hybrids, which were identified by phenotype, possessed mainly C. penicillata or C. jacchus mtDNA haplotypes. The biogeographic origins of mtDNA haplotypes from hybrid and allochthonous Callithrix were broadly distributed across natural Callithrix ranges. Our phylogenetic results also evidence introgression of C. jacchus mtDNA into C. aurita. CONCLUSION: Our robust Callithrix mitogenome phylogeny shows C. aurita lineages as basal and C. jacchus lineages among the most recent within Callithrix. We provide the first evidence that parental mtDNA lineages of anthropogenic hybrid and allochthonous marmosets are broadly distributed inside and outside of the Atlantic Forest. We also show evidence of cryptic hybridization between allochthonous Callithrix and autochthonous C. aurita. Our results encouragingly show that further development of genomic resources will allow to more clearly elucidate Callithrix evolutionary relationships and understand the dynamics of Callithrix anthropogenic introductions into the Brazilian Atlantic Forest.


Assuntos
Evolução Biológica , Callithrix , Animais , Brasil , Callithrix/genética , DNA Mitocondrial/genética , Humanos , Filogenia
4.
J Dairy Res ; 87(2): 191-195, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32419691

RESUMO

This research communication describes the influence of diet, mammary quarter position and milking process on the temperature of teats and udder of cows fed diets containing different lipid sources. Five primiparous cows were fed diets containing cottonseed, sunflower seed, soybeans or soybean oil as a source of lipids and a reference diet without the inclusion of lipid sources in a 5 × 5 Latin Square design. Milk yield was determined in the last five days of each period. Milk samples were collected for SCC analysis on the last two days of each experimental period. The images of the mammary gland were obtained using an infrared camera and were analyzed with appropriate computer software. Milk yield was 14.8% higher for cows fed soybeans as a source of lipids. Diets and somatic cell counts did not influence the temperature of teats and udder. The milking process reduced the temperature of teats and udder by 0.79°C. Rear teats and rear quarters had higher surface temperatures than front teats and fore quarters. Changes in temperature of teats and mammary quarters occurred as a function of the milking process and quarter position. However, the diet and the SCC did not influence the temperature of teats and mammary quarters in this experiment.


Assuntos
Bovinos/fisiologia , Gorduras na Dieta/administração & dosagem , Glândulas Mamárias Animais/fisiologia , Temperatura Cutânea , Termografia/veterinária , Animais , Contagem de Células/veterinária , Óleo de Sementes de Algodão/administração & dosagem , Indústria de Laticínios/métodos , Dieta/veterinária , Feminino , Lactação/fisiologia , Leite/citologia , Paridade , Gravidez , Óleo de Soja/administração & dosagem , Óleo de Girassol/administração & dosagem
5.
ILAR J ; 61(2-3): 110-138, 2020 12 31.
Artigo em Inglês | MEDLINE | ID: mdl-34933341

RESUMO

We provide here a current overview of marmoset (Callithrix) evolution, hybridization, species biology, basic/biomedical research, and conservation initiatives. Composed of 2 subgroups, the aurita group (C aurita and C flaviceps) and the jacchus group (C geoffroyi, C jacchus, C kuhlii, and C penicillata), this relatively young primate radiation is endemic to the Brazilian Cerrado, Caatinga, and Atlantic Forest biomes. Significant impacts on Callithrix within these biomes resulting from anthropogenic activity include (1) population declines, particularly for the aurita group; (2) widespread geographic displacement, biological invasions, and range expansions of C jacchus and C penicillata; (3) anthropogenic hybridization; and (4) epizootic Yellow Fever and Zika viral outbreaks. A number of Brazilian legal and conservation initiatives are now in place to protect the threatened aurita group and increase research about them. Due to their small size and rapid life history, marmosets are prized biomedical models. As a result, there are increasingly sophisticated genomic Callithrix resources available and burgeoning marmoset functional, immuno-, and epigenomic research. In both the laboratory and the wild, marmosets have given us insight into cognition, social group dynamics, human disease, and pregnancy. Callithrix jacchus and C penicillata are emerging neotropical primate models for arbovirus disease, including Dengue and Zika. Wild marmoset populations are helping us understand sylvatic transmission and human spillover of Zika and Yellow Fever viruses. All of these factors are positioning marmosets as preeminent models to facilitate understanding of facets of evolution, hybridization, conservation, human disease, and emerging infectious diseases.


Assuntos
Febre Amarela , Infecção por Zika virus , Zika virus , Animais , Brasil , Callithrix/genética , Genômica , Hibridização Genética
6.
J Aging Phys Act ; 26(4): 608-613, 2018 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-29345543

RESUMO

The purpose of the study was to clarify the independent association between sedentary behavior and physical activity with multiple chronic diseases and medicine intake in older individuals. Sedentary behavior and physical activity were measured by questionnaires. Diseases and medication use were self-reported. Poisson's regression was adopted for main analysis, through crude and adjusted prevalence ratio and confidence interval of 95%. For men, sedentary time >4 hr/day presented a 76% higher prevalence of ≥2 chronic diseases, while physical inactivity increases the likelihood of using ≥2 medicines in 95%. For women, sedentary behavior >4 hr/day presented an 82% and 43% greater prevalence for ≥2 chronic diseases and the intake of ≥2 medicines, respectively. Sedentary behavior represents an independent associated factor of multiple chronic diseases in older men and women. In addition, inactivity for men and sedentarism for women are associated with the amount of medicine intake.


Assuntos
Exercício Físico , Múltiplas Afecções Crônicas/epidemiologia , Comportamento Sedentário , Postura Sentada , Idoso , Brasil/epidemiologia , Feminino , Humanos , Masculino , Prevalência , Autorrelato , Inquéritos e Questionários
7.
PLoS One ; 10(6): e0127268, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26061111

RESUMO

Animal hybridization is well documented, but evolutionary outcomes and conservation priorities often differ for natural and anthropogenic hybrids. Among primates, an order with many endangered species, the two contexts can be hard to disentangle from one another, which carries important conservation implications. Callithrix marmosets give us a unique glimpse of genetic hybridization effects under distinct natural and human-induced contexts. Here, we use a 44 autosomal microsatellite marker panel to examine genome-wide admixture levels and introgression at a natural C. jacchus and C. penicillata species border along the São Francisco River in NE Brazil and in an area of Rio de Janeiro state where humans introduced these species exotically. Additionally, we describe for the first time autosomal genetic diversity in wild C. penicillata and expand previous C. jacchus genetic data. We characterize admixture within the natural zone as bimodal where hybrid ancestry is biased toward one parental species or the other. We also show evidence that São Francisco River islands are gateways for bidirectional gene flow across the species border. In the anthropogenic zone, marmosets essentially form a hybrid swarm with intermediate levels of admixture, likely from the absence of strong physical barriers to interspecific breeding. Our data show that while hybridization can occur naturally, the presence of physical, even if leaky, barriers to hybridization is important for maintaining species genetic integrity. Thus, we suggest further study of hybridization under different contexts to set well informed conservation guidelines for hybrid populations that often fit somewhere between "natural" and "man-made."


Assuntos
Callithrix/genética , Hibridização Genética , Animais , Brasil
8.
Am J Phys Anthropol ; 155(4): 522-36, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25186076

RESUMO

Hybridization is continually documented in primates, but effects of natural and anthropogenic hybridization on biodiversity are still unclear and differentiating between these contexts remains challenging in regards to primate evolution and conservation. Here, we examine hybridization effects on the mitochondrial DNA (mtDNA) control region of Callithrix marmosets, which provide a unique glimpse into interspecific mating under distinct anthropogenic and natural conditions. DNA was sampled from 40 marmosets along a 50-km transect from a previously uncharacterized hybrid zone in NE Brazil between the ranges of Callithrix jacchus and Callithrix penicillata. DNA was also collected from 46 marmosets along a 30-km transect in a hybrid zone in Rio de Janeiro state, Brazil, where exotic marmosets appeared in the 1980s. Combining Callithrix DNA sampled inside and outside of these hybrid zones, phylogenetic and network analyses show C. jacchus and C. penicillata being parental species to sampled hybrids. We expand limited Callithrix population genetics work by describing mtDNA diversity and demographic history of these parental species. We show ancient population expansion in C. jacchus and historically constant population size in C. penicillata, with the latter being more genetically diverse than the former. The natural hybrid zone contained higher genetic diversity relative to the anthropogenic zone. While our data suggest hybrid swarm formation within the anthropogenic zone due to removed physical reproductive barriers, this pattern is not seen in the natural hybrid zone. These results suggest different genetic dynamics within natural and anthropogenic hybridization contexts that carry important implications for primate evolution and conservation.


Assuntos
Callithrix/genética , DNA Mitocondrial/genética , Evolução Molecular , Variação Genética/genética , Hibridização Genética/genética , Animais , Antropologia Física , Brasil , Callithrix/fisiologia , Orelha/anatomia & histologia , Cabeça/anatomia & histologia , Fenótipo
9.
Eur J Appl Physiol ; 112(3): 941-50, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-21706313

RESUMO

Physical training induces beneficial adaptations, but exhausting exercise increases reactive oxygen species, which can cause muscular injuries with consequent inflammatory processes, implying jeopardized performance and possibly overtraining. Acute strenuous exercise almost certainly exceeds the benefits of physical activity; it can compromise performance and may contribute to increased future risk of cardiovascular disease (CVD) in athletes. Polymorphisms in the muscle-type creatine kinase (CK-MM) gene may influence performance and adaptation to training, while many potentially significant genetic variants are reported as risk factors for CVD. Therefore, we investigated the influence of polymorphisms in CK-MM TaqI and NcoI, methylenetetrahydrofolate reductase (MTHFR C677T and A1298C) and C-reactive protein (CRP G1059C) genes on exercise-induced damage and inflammation markers. Blood samples were taken immediately after a race (of at least 4 km) that took place outdoors on flat tracks, and were submitted to genotyping and biochemical evaluation of aspartate aminotransferase (AST), CK, CRP and high-sensitivity CRP (hs-CRP). CK-MM TaqI polymorphism significantly influenced results of AST, CK and hs-CRP, and an association between MTHFR C677T and A1298C with CRP level was found, although these levels did not exceed reference values. The results indicate that these polymorphisms can indirectly influence performance, contribute to higher susceptibility to exercise-induced inflammation or protection against it, and perhaps affect future risks of CVD in athletes.


Assuntos
Proteína C-Reativa/metabolismo , Creatina Quinase Forma MM/genética , Desoxirribonucleases de Sítio Específico do Tipo II/metabolismo , Exercício Físico/fisiologia , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Polimorfismo de Fragmento de Restrição/fisiologia , Polimorfismo de Nucleotídeo Único/fisiologia , Adolescente , Adulto , Atletas , Proteína C-Reativa/análise , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/genética , Feminino , Frequência do Gene , Predisposição Genética para Doença , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Fragmento de Restrição/genética , Fatores de Risco , Adulto Jovem
10.
Eur J Appl Physiol ; 112(1): 183-92, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21516340

RESUMO

Physical training induces beneficial adaptations, but exhausting exercise increases reactive oxygen species, which can cause muscular injuries with consequent inflammatory processes, implying jeopardized performance and possibly overtraining. Acute strenuous exercise almost certainly exceeds the benefits of physical activity; it can compromise performance and may contribute to increased future risk of cardiovascular disease (CVD) in athletes. Polymorphisms in the muscle-type creatine kinase (CK-MM) gene may influence performance and adaptation to training, while many potentially significant genetic variants are reported as risk factors for CVD. Therefore, we investigated the influence of polymorphisms in CK-MM TaqI and NcoI, methylenetetrahydrofolate reductase (MTHFR C677T and A1298C) and C-reactive protein (CRP G1059C) genes on exercise-induced damage and inflammation markers. Blood samples were taken immediately after a race (of at least 4 km) that took place outdoors on flat tracks, and were submitted to genotyping and biochemical evaluation of aspartate aminotransferase (AST), CK, CRP and high-sensitivity CRP (hs-CRP). CK-MM TaqI polymorphism significantly influenced results of AST, CK and hs-CRP, and an association between MTHFR C677T and A1298C with CRP level was found, although these levels did not exceed reference values. Results indicate that these polymorphisms can indirectly influence performance, contribute to higher susceptibility to exercise-induced inflammation or protection against it, and perhaps affect future risks of CVD in athletes.


Assuntos
Proteína C-Reativa/genética , Creatina Quinase Forma MM/genética , Exercício Físico/fisiologia , Metilenotetra-Hidrofolato Desidrogenase (NADP)/genética , Esforço Físico/genética , Polimorfismo de Nucleotídeo Único/genética , Adolescente , Adulto , Creatina Quinase Forma MM/sangue , Feminino , Humanos , Masculino , Metilenotetra-Hidrofolato Desidrogenase (NADP)/sangue , Pessoa de Meia-Idade , Corrida/fisiologia , Adulto Jovem
11.
Genet Mol Biol ; 33(2): 359-67, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21637495

RESUMO

Physical training induces beneficial adaptation, whereas exhaustive exercises increase reactive oxygen-species generation, thereby causing oxidative damage in plasma and erythrocytes, fractions susceptible to lipid peroxidation. Pequi (Caryocar brasiliense Camb.) is a Brazilian Cerrado fruit containing a carotenoid-rich oil. The aim was to investigate the effects of pequi-oil on exercise-induced oxidative damage in plasma and erythrocytes, after running in the same environment and undergoing weekly training under the same conditions as to type, intensity and length. Evaluations were accomplished after outdoor running on flat land before and after ingestion of 400 mg pequi-oil capsules for 14 days. Blood samples were taken after running and submitted to TBARS assay and erythrogram analysis. Haptoglobin, MnSOD (Val9Ala), CAT (21A/T) and GPX1 (Pro198Leu) gene polymorphisms were priorly investigated, so as to estimate genetic influence The reduction in erythrocytes, hemoglobin and hematocrit after pequi-oil treatment was notably associated with higher plasma expansion. Except for MCHC (mean corpuscular hemoglobin concentration) and RDW (red cell distribution width), the results were influenced by the polymorphisms studied. The best response to pequi-oil was presented by MnSOD Val/Val, CAT AA or AT genotypes and the GPX1 Pro allele. The significantly lower RDW and higher MHCH values were related to pequi-oil protective effects. Pequi oil, besides possessing other nutritional properties, showed protective blood effects.

12.
Genet. mol. biol ; 33(2): 359-367, 2010. graf, tab
Artigo em Inglês | LILACS | ID: lil-548825

RESUMO

Physical training induces beneficial adaptation, whereas exhaustive exercises increase reactive oxygen-species generation, thereby causing oxidative damage in plasma and erythrocytes, fractions susceptible to lipid peroxidation. Pequi (Caryocar brasiliense Camb.) is a Brazilian Cerrado fruit containing a carotenoid-rich oil. The aim was to investigate the effects of pequi-oil on exercise-induced oxidative damage in plasma and erythrocytes, after running in the same environment and undergoing weekly training under the same conditions as to type, intensity and length. Evaluations were accomplished after outdoor running on flat land before and after ingestion of 400 mg pequi-oil capsules for 14 days. Blood samples were taken after running and submitted to TBARS assay and erythrogram analysis. Haptoglobin, MnSOD (Val9Ala), CAT (21A/T) and GPX1 (Pro198Leu) gene polymorphisms were priorly investigated, so as to estimate genetic influence The reduction in erythrocytes, hemoglobin and hematocrit after pequi-oil treatment was notably associated with higher plasma expansion. Except for MCHC (mean corpuscular hemoglobin concentration) and RDW (red cell distribution width), the results were influenced by the polymorphisms studied. The best response to pequi-oil was presented by MnSOD Val/Val, CAT AA or AT genotypes and the GPX1 Pro allele. The significantly lower RDW and higher MHCH values were related to pequi-oil protective effects. Pequi oil, besides possessing other nutritional properties, showed protective blood effects.

13.
Nutr Res ; 29(12): 850-8, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19963158

RESUMO

The objective of this study was to investigate the anti-inflammatory properties of pequi (Caryocar brasiliense) fruit oil and its effects on the postprandial lipidemia and arterial blood pressure of male and female athletes. These athletes were evaluated after races in the same environment and under the same type, intensity, and length of weekly training conditions, both before and after ingestion of 400 mg pequi oil capsules for 14 days. Pequi fruit contains several antioxidants, and its oil has been associated with anti-inflammatory properties in other pequi species. Because the oil of pequi is mostly composed of oleic and palmitic fatty acids, the oil may alter the ratio of triglyceride to cholesterol in postprandial lipidemia. Epidemiologic studies suggest that an increased intake of monounsaturated fatty acids (such as oleic acid) is inversely related to blood pressure. Thus, we hypothesize that pequi oil could reduce exercise-induced inflammation and blood pressure, and modulate postprandial lipidemia in runners. To test this hypothesis, arterial blood pressures were checked before races; blood samples were taken after the races and submitted for analysis of leukocytes and platelets analysis, high-sensitivity C-reactive protein values, and postprandial lipids. Pequi oil resulted in anti-inflammatory effects and reduced the total cholesterol and low-density lipoprotein in the age group older than 45 years, mainly for men. The results showed a general trend for reduced arterial pressure, suggesting that pequi oil may have a hypotensive effect. However, this finding needs additional investigation. Thus, pequi oil, besides possessing many nutritional properties, may be a good candidate supplement for athletes.


Assuntos
Anti-Inflamatórios não Esteroides/farmacologia , Antioxidantes/farmacologia , Pressão Sanguínea/efeitos dos fármacos , Ericales/química , Exercício Físico , Mediadores da Inflamação/sangue , Óleos de Plantas/farmacologia , Adolescente , Adulto , Idoso , Envelhecimento , Biomarcadores/sangue , Feminino , Frutas/química , Humanos , Lipídeos/sangue , Lipoproteínas/sangue , Masculino , Pessoa de Meia-Idade , Aptidão Física/fisiologia , Corrida , Caracteres Sexuais , Adulto Jovem
14.
Mov Disord ; 19(12): 1485-92, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15390066

RESUMO

The pathophysiological changes in neural activity that characterize multiple system atrophy (MSA) are largely unknown. We recorded the activity of pallidal neurons in 3 patients with clinical and radiological features of MSA who underwent unilateral microelectrode-guided pallidotomy for disabling parkinsonism. Findings in these patients were compared with 4 control patients with a clinical diagnosis of Parkinson's disease (PD). The position, firing rates, and firing patterns of single neurons in the pallidal complex were analyzed in both MSA and PD patients. The mean spontaneous firing rate of neurons in the internal segment of the globus pallidus internus (GPii) was significantly lower in MSA than in PD patients. There were no significant differences between MSA and PD patients, however, in firing rates of neurons in the external globus pallidus (GPe) or in the external segment of GPi (GPie). In addition, no significant differences in firing pattern were found between MSA and PD patients. In conclusion, this study has shown that firing rates of neurons in GPii but not in GPie and GPe are different in MSA patients compared with that in PD patients, a finding that may reflect the poor clinical results of pallidotomy reported in patients with MSA.


Assuntos
Globo Pálido/fisiopatologia , Atrofia de Múltiplos Sistemas/fisiopatologia , Doença de Parkinson/fisiopatologia , Adulto , Idoso , Anticonvulsivantes/uso terapêutico , Antiparkinsonianos/uso terapêutico , Feminino , Globo Pálido/cirurgia , Humanos , Levodopa/uso terapêutico , Masculino , Microeletrodos , Pessoa de Meia-Idade , Atrofia de Múltiplos Sistemas/cirurgia , Procedimentos Neurocirúrgicos/instrumentação , Doença de Parkinson/tratamento farmacológico , Doença de Parkinson/cirurgia
15.
J Neurosurg ; 97(5): 1152-66, 2002 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-12450038

RESUMO

OBJECT: The authors sought to determine the location of deep brain stimulation (DBS) electrodes that were most effective in treating Parkinson disease (PD). METHODS: Fifty-four DBS electrodes were localized in and adjacent to the subthalamic nucleus (STN) postoperatively by using magnetic resonance (MR) imaging in a series of 29 patients in whom electrodes were implanted for the treatment of medically refractory PD, and for whom quantitative clinical assessments were available both pre- and postoperatively. A novel MR imaging sequence was developed that optimized visualization of the STN. The coordinates of the tips of these electrodes were calculated three dimensionally and the results were normalized and corrected for individual differences by using intraoperative neurophysiological data (mean 5.13 mm caudal to the midcommissural point [MCP], 8.46 mm inferior to the anterior commissure-posterior commissure [AC-PC], and 10.2 mm lateral to the midline). Despite reported concerns about distortion on the MR image, reconstructions provided consistent data for the localization of electrodes. The neurosurgical procedures used, which were guided by combined neuroimaging and neurophysiological methods, resulted in the consistent placement of DBS electrodes in the subthalamus and mesencephalon such that the electrode contacts passed through the STN and dorsally adjacent fields of Forel (FF) and zona incerta (ZI). The mean location of the clinically effective contacts was in the anterodorsal STN (mean 1.62 mm posterior to the MCP, 2.47 mm inferior to the AC-PC, and 11.72 mm lateral to the midline). Clinically effective stimulation was most commonly directed at the anterodorsal STN, with the current spreading into the dorsally adjacent FF and ZI. CONCLUSIONS: The anatomical localization of clinically effective electrode contacts provided in this study yields useful information for the postoperative programming of DBS electrodes.


Assuntos
Terapia por Estimulação Elétrica , Eletrodos Implantados , Imageamento por Ressonância Magnética , Doença de Parkinson/diagnóstico , Doença de Parkinson/terapia , Núcleo Subtalâmico/patologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
16.
Rev. Inst. Med. Trop. Säo Paulo ; 36(3): 265-74, maio-jun. 1994. ilus, mapas, tab
Artigo em Inglês | LILACS | ID: lil-140172

RESUMO

Apresentam-se os resultados referentes a anticorpos para arbovirus em aves silvestres capturadas, periodicamente, de janeiro de 1978 a dezembro de 1990, nos municipios de Salesopolis (Estacao de Casa Grande); Itapetininga e municipios do Vale do Ribeira, considerando-se os diferentes ambientes de captura. Plasmas foram examinados, por testes de inibicao de hemaglutinacao (IH). Considerou-se apenas as reacoes monotipicas, com excecao de duas reacoes heterotipicas, onde ocorreu uma diferenca de titulo significativa para um determinado virus de um mesmo grupo antigenico. Em um total de 39.911 aves, foram encontradas 269 aves pertencentes a 66 especies e 22 familias, com reacao monotipica para os virus...


Assuntos
Animais , Testes de Inibição da Hemaglutinação , Infecções por Arbovirus/epidemiologia , Animais Selvagens , Aves/microbiologia , Infecções por Arbovirus/história
17.
RBM rev. bras. med ; 44(1/2): 19-23, jan.-fev. 1987. tab, ilus
Artigo em Português | LILACS | ID: lil-39592

RESUMO

Foi realizado um estudo multicêntrico, aberto, näo comparativo em 10 centros universitários de dermatologia no Brasil com a participaçäo de 137 pacientes, utilizando-se um novo derivado imidazólico com potente açäo fungicida - o tioconazol - no tratamento de tinea corporis, cruris ou pedis. Dos 137 pacientes tratados, 44 (32%) eram portadores de T. corporis, 44 (32%) de T. cruris e 49 (36%) de T. pedis. O agente etiológico predominante foi o T. rubrum, responsável por 68 (50%) dos casos, o T. mentagrophytes foi detectado em 32 (23%), o E. floccosum em 25 (18%) e o M. canis em 12 (9%) dos pacientes. O tioconazol foi usado sob a forma de loçäo a 1% e aplicado duas vezes ao dia, durante 4 semanas. Os pacientes foram avaliados clínica e micologicamente no pré-tratamento, na 2ª, 4ª e, se possível, na 8ª semana. A avaliaçäo clínica global ao término do tratamento (4ª semana) evidenciou resultados excelentes ou bons em 132 (96%) pacientes, sendo que nesta ocasiäo 133 (97%) apresentaram cura micológica. Dos 57 paciente que retornaram 4 semanas após o término da terapêutica (8ª semana), em todos constatou-se persistência da cura clínica e micológica. A tolerabilidade ao tioconazol foi excelente, uma vez que somente 2 (1,5%) pacientes apresentaram reaçöes adversas, sendo que destes, em apenas 1 houve necessidade de interrupçäo do tratamento. Em conclusäo, o tioconazol mostrou ser eficaz e seguro no tratamento da tinea corporis, cruris ou pedis


Assuntos
Adolescente , Adulto , Pessoa de Meia-Idade , Humanos , Masculino , Feminino , Imidazóis/uso terapêutico , Tinha/tratamento farmacológico , Tinha dos Pés/tratamento farmacológico
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