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1.
J Intern Med ; 290(2): 373-385, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33826195

RESUMO

BACKGROUND: As opposed to the decreasing overall rates of coronary heart disease (CHD) incidence and overall cardiovascular disease (CVD) mortality, heart failure (HF) and stroke incidence are increasing in young people, potentially due to rising rates of obesity and reduced cardiorespiratory fitness (CRF). OBJECTIVES: We investigated trends in early major CVD outcomes in a large cohort of young men. METHODS: Successive cohorts of Swedish military conscripts from 1971 to 1995 (N = 1,258,432; mean age, 18.3 years) were followed, using data from the National Inpatient and Cause of Death registries. Cox proportional hazard models were used to analyse changes in 21-year CVD event rates. RESULTS: 21-year CVD and all-cause mortality and incidence of acute myocardial infarction (AMI) decreased progressively. Compared with the cohort conscripted in 1971-1975 (reference), the hazard ratios (HRs) for the last 1991-1995 cohort were 0.50 [95% confidence interval (CI) 0.42-0.59] for CVD mortality; 0.57 (95% CI 0.54-0.60) for all-cause mortality; and 0.63 (95% CI 0.53-0.75) for AMI. In contrast, the incidence of ischaemic stroke, intracerebral haemorrhage and HF increased with HRs of 1.43 (95% CI 1.17-1.75), 1.30 (95% CI 1.01-1.68) and 1.84 (95% CI 1.47-2.30), respectively. During the period, rates of obesity increased from 1.04% to 2.61%, whilst CRF scores decreased slightly. Adjustment for these factors influenced these secular trends only moderately. CONCLUSION: Secular trends of young-onset CVD events demonstrated a marked shift from AMI and CVD mortality to HF and stroke incidence. Trends were significantly, though moderately, influenced by changing baseline BMI and CRF.


Assuntos
Aptidão Cardiorrespiratória , Insuficiência Cardíaca/epidemiologia , Infarto do Miocárdio/epidemiologia , Obesidade/etnologia , Acidente Vascular Cerebral/epidemiologia , Adulto , Fatores Etários , Estudos de Coortes , Humanos , Incidência , Masculino , Modelos de Riscos Proporcionais , Fatores de Risco , Fatores Sexuais , Taxa de Sobrevida , Suécia , Adulto Jovem
2.
J Intern Med ; 287(6): 734-745, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32338406

RESUMO

BACKGROUND: As the population of obese and severely obese young adults grows, it is becoming increasingly important to recognize the long-term risks associated with adolescent obesity. OBJECTIVES: This study aimed to determine the association between body mass index (BMI) in young men at enlistment for military service and later risk of venous thromboembolism (VTE). METHODS: Nationwide register-based prospective cohort study of men enlisting 1969 to 2005, followed through the Swedish National Patient and Cause of Death registries. We identified 1 639 838 men (mean age, 18.3 years) free of prior venous thromboembolism, of whom 29 342 were obese (BMI 30 to <35 kg m-2 ) and 7236 severely obese (BMI ≥ 35 kg m-2 ). The participants were followed until a first registered diagnosis of VTE. RESULTS: During a median follow-up of 28 years (interquartile interval, 20 to 36 years), 11 395 cases of deep vein thrombosis and 7270 cases of pulmonary embolism were recorded. Compared with men with a BMI of 18.5 to <20 kg m-2 , men with higher BMI in young adulthood showed an incrementally increasing risk of VTE that was moderately but significantly increased already at normal BMI levels. Adolescent obese men with a BMI of 30 to 35 kg m-2 had an adjusted hazard ratio of 2.93 (95% confidence interval, 2.65 to 3.24) for VTE. Severely obese men with a BMI of ≥35 kg m-2 had a hazard ratio of 4.95 (95% confidence interval, 4.16 to 5.90). CONCLUSIONS: Men who were obese or severely obese in young adulthood had a marked increase in risk of VTE.


Assuntos
Obesidade Infantil/complicações , Tromboembolia Venosa/etiologia , Adolescente , Adulto , Índice de Massa Corporal , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Obesidade Infantil/epidemiologia , Modelos de Riscos Proporcionais , Estudos Prospectivos , Sistema de Registros , Fatores de Risco , Tromboembolia Venosa/epidemiologia , Adulto Jovem
3.
Brain Behav Immun ; 76: 159-164, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30465879

RESUMO

BACKGROUND: Inflammation has been suggested to be one, possibly treatable, cause of cognitive decline and dementia. The purpose of the present article was to investigate whether the herpes simplex virus 1 (HSV-1) or Toxoplasma gondii (T. gondii) infections are related to cognitive decline or dementia. METHOD: The Health 2000 survey, conducted 2000-2001, is a population-representative sample of people over 30 years old that involved 7112 participants. The sample was followed up in the year 2011, in the Health 2011 study. At both time points, cognitive performance was assessed with two tests from the Consortium to Establish a Registry for Alzheimer's Disease (CERAD) assessing verbal fluency and verbal learning. In addition, the abbreviated Mini-Mental State Examination was administered to people aged over 55. In addition, tests assessing reaction and movement time were performed at baseline. Dementia diagnoses from nationwide health care registers were followed up until the end of year 2013. The presence of HSV-1 and T. gondii immunoglobulin G (IgG) was determined by solid-phase immunoassay at baseline. RESULTS: HSV-1 or T. gondii seropositivity, or IgG antibody levels, were not associated with cognitive decline when investigated as infection × time interactions. In addition, the infections were not associated with the risk of dementia. CONCLUSIONS: In a large sample of participants that is representative of the whole country and with a long follow-up, the results suggest that latent HSV-1 or T. gondii infections are not related to either decline in cognitive performance or dementia risk.


Assuntos
Disfunção Cognitiva/etiologia , Adulto , Idoso , Disfunção Cognitiva/fisiopatologia , Demência , Feminino , Finlândia , Seguimentos , Herpes Simples/fisiopatologia , Herpes Simples/psicologia , Herpesvirus Humano 1/imunologia , Herpesvirus Humano 1/patogenicidade , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Fatores de Risco , Toxoplasma/imunologia , Toxoplasma/patogenicidade , Toxoplasmose/fisiopatologia , Toxoplasmose/psicologia
4.
Schizophr Res ; 192: 404-407, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28461116

RESUMO

It may be challenging to distinguish autoimmune encephalitis associated with anti-neuronal autoantibodies from primary psychiatric disorders. Here, serum was drawn from patients with a first-episode psychosis (n=70) or a clinical high-risk for psychosis (n=6) and controls (n=34). We investigated the serum prevalence of 24 anti-neuronal autoantibodies: IgG antibodies for anti-N-methyl-d-aspartate-type glutamate receptor (anti-NMDAR), glutamate and γ-aminobutyric acid alpha and beta receptors (GABA-a, GABA-b), alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPA), glycine receptor (GlyR), metabotropic glutamate receptor 1 and 5 (mGluR1, mGluR5), anti-Tr/Delta/notch-like epidermal growth factor-related receptor (DNER), contactin-associated protein-like 2 (CASPR2), myelin oligodendrocyte glycoprotein (MOG), glutamic acid decarboxylase-65 (GAD65), collapsin response mediator protein 5/crossveinless-2 (CV2), aquaporin-4 (AQP4), anti-dipeptidyl-peptidase-like protein-6 (DPPX), type 1 anti-neuronal nuclear antibody (ANNA-1, Hu), Ri, Yo, IgLON5, Ma2, zinc finger protein 4 (ZIC4), Rho GTPase-activating protein 26, amphiphysin, and recoverin, as well as IgA and IgM for dopamine-2-receptor (DRD2). Anti-NMDA IgG antibodies were positive with serum titer 1:320 in one patient with a clinical high risk for psychosis. He did not receive a diagnosis of encephalitis after comprehensive neurological evaluation. All other antineuronal autoantibodies were negative and there were no additional findings with immunohistochemistry of brain issues.


Assuntos
Autoanticorpos/sangue , Sintomas Prodrômicos , Transtornos Psicóticos/sangue , Transtornos Psicóticos/imunologia , Receptores de Glutamato/imunologia , Adolescente , Adulto , Aquaporina 4 , Feminino , Seguimentos , Humanos , Masculino , Proteínas de Membrana/imunologia , Glicoproteína Mielina-Oligodendrócito/imunologia , Proteínas do Tecido Nervoso/imunologia , Escalas de Graduação Psiquiátrica , Receptores de GABA/imunologia , Receptores de Glicina/imunologia , Estudos Retrospectivos , Adulto Jovem
5.
J Helminthol ; 92(1): 49-55, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28260532

RESUMO

The cestode Hymenolepis microps is an intestinal parasite of tetraonid birds, including the willow ptarmigan (Lagopus lagopus). This parasite is able to maintain a high prevalence and intensity throughout the year, even in a subarctic environment in bird populations with relatively low host densities, indicating effective transmission routes. Willow ptarmigan consume mainly vegetal material and active consumption of invertebrates is confined to the first two or three weeks of life. Ptarmigan are infected by different species of ectoparasites, of which two species of feather lice, Lagopoecus affinis and Goniodes lagopi, are the most abundant. In this study, we explored the hypothesis that feather lice may be suitable intermediate hosts for H. microps. We applied histological techniques and light microscopy to investigate lice for the presence of larval cestode stages (cysticercoids). We found 12 cysticercoid-like structures inside chewing lice collected on L. lagopus hosts harbouring H. microps. In addition, a polymerase chain reaction (PCR) screening of Ischnocera lice DNA, targeting the 18S rRNA gene of the cestode, showed positive results for two different short fragments of the 18S rRNA gene of H. microps which were sequenced from lice collected on birds. Both independent lines of evidence support the hypothesis that Ischnocera lice might be suitable intermediate hosts in the life cycle of H. microps in L. lagopus.


Assuntos
Doenças das Aves/parasitologia , Galliformes/parasitologia , Himenolepíase/veterinária , Hymenolepis/fisiologia , Infestações por Piolhos/veterinária , Ftirápteros/fisiologia , Animais , Doenças das Aves/epidemiologia , Doenças das Aves/transmissão , Interações Hospedeiro-Parasita , Himenolepíase/epidemiologia , Himenolepíase/parasitologia , Himenolepíase/transmissão , Insetos Vetores/parasitologia , Infestações por Piolhos/epidemiologia , Infestações por Piolhos/parasitologia , Noruega/epidemiologia , Ftirápteros/parasitologia , Reação em Cadeia da Polimerase , Sensibilidade e Especificidade
6.
Eur J Med Chem ; 141: 221-231, 2017 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-29031069

RESUMO

A cancer-targeting conjugate 4 of a cyclometalated [N,C,N-Pt(II)] complex bearing a NˆCˆN 1,3-di(2-pyridyl)-benzene with c(RGDyK) peptide as guiding molecule was designed and synthesized for real-time drug delivery monitoring in cancer cells and photodynamic therapy (PDT). This conjugate demonstrates a mild cytostatic effect to six cancer cell lines expressing integrins at different extent, while possessing promising features for PDT. Conjugate 4 demonstrated rapid cell uptake by receptor-mediated endocytosis and efficient generation of 1O2 upon irradiation. Incubation of rat bladder cancer cells AY27 with conjugate 4 (50 µΜ) prior to blue light exposure (5 min) resulted in significant reduction (50%) of cell survival compared to control cells as measured by MTT assay post 24 h after treatment.


Assuntos
Antineoplásicos/farmacologia , Integrinas/antagonistas & inibidores , Oligopeptídeos/farmacologia , Compostos Organoplatínicos/farmacologia , Fotoquimioterapia , Platina/farmacologia , Animais , Antineoplásicos/síntese química , Antineoplásicos/química , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Integrinas/metabolismo , Estrutura Molecular , Oligopeptídeos/química , Compostos Organoplatínicos/síntese química , Compostos Organoplatínicos/química , Platina/química , Ratos , Relação Estrutura-Atividade
7.
J Wound Care ; 24(8): 346-58, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26562377

RESUMO

OBJECTIVE: The aim of this study was to explore the interaction between interface pressure, pressure-induced vasodilation, and reactive hyperaemia with different pressure-redistribution mattresses. METHOD: A cross-sectional study was performed with a convenience sample of healthy young individuals, and healthy older individuals and inpatients, at a university hospital in Sweden. Blood flow was measured at depths of 1mm, 2mm, and 10mm using laser Doppler flowmetry and photoplethysmography. The blood flow, interface pressure and skin temperature were measured in the sacral tissue before, during, and after load while lying on one standard hospital mattress and three different pressure-redistribution mattresses. RESULTS: There were significant differences between the average sacral pressure, peak sacral pressure, and local probe pressure on the three pressure-redistribution mattresses, the lowest values found were with the visco-elastic foam/air mattress (23.5 ± 2.5mmHg, 49.3 ± 11.1mmHg, 29.2 ± 14.0mmHg, respectively). Blood flow, measured as pressure-induced vasodilation, was most affected in the visco-elastic foam/air group compared to the alternating pressure mattress group at tissue depths of 2mm (39.0% and 20.0%, respectively), and 10mm (56.9 % and 35.1%, respectively). Subjects in all three groups, including healthy 18-65 year olds, were identified with no pressure-induced vasodilation or reactive hyperaemia on any mattress (n=11), which is considered a high-risk blood flow response. CONCLUSION: Interface pressure magnitudes considered not harmful during pressure-exposure on different pressure-redistribution mattresses can affect the microcirculation in different tissue structures. Despite having the lowest pressure values compared with the other mattresses, the visco-elastic foam/air mattress had the highest proportion of subjects with decreased blood flow. Healthy young individuals were identified with the high-risk blood flow response, suggesting an innate vulnerability to pressure exposure. Furthermore, the evaluation of pressure-redistribution support surfaces in terms of mean blood flow during and after tissue exposure is not feasible, but assessment of pressure-induced vasodilation and reactive hyperaemia could be a new way to assess individualised physiological measurements of mechanisms known to be related to pressure ulcer development.


Assuntos
Leitos , Hiperemia/fisiopatologia , Úlcera por Pressão/prevenção & controle , Pressão/efeitos adversos , Sacro/irrigação sanguínea , Vasodilatação/fisiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Velocidade do Fluxo Sanguíneo , Estudos Transversais , Feminino , Humanos , Hiperemia/etiologia , Pacientes Internados , Masculino , Microcirculação , Pessoa de Meia-Idade , Úlcera por Pressão/etiologia , Sacro/fisiopatologia , Temperatura Cutânea , Suécia , Adulto Jovem
8.
Dalton Trans ; 43(25): 9620-32, 2014 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-24832103

RESUMO

Wide band-gap semiconductors doped with luminescent rare earth elements (REEs) have attracted recent interest due to their unique optical properties. Here we report on the synthesis of the transparent conducting oxides (TCOs) indium oxide and indium tin oxide (ITO) doped with neodymium, europium and terbium. The solid solubility in the systems was investigated and isothermal phase diagrams at 1400 °C were proposed. The solubility of the REEs in In2O3 is mainly determined by the size of the rare earth dopant, while in ITO the solid solubility was reduced due to a strong tendency of the tin and REE co-dopants to form a pyrochlore phase. The effect of the REE-doping on the conductivity of the host was determined and optical activity of the REE dopants were investigated in selected host materials. The conductivity of sintered materials of REE-doped In2O3 was significantly reduced, even at small doping concentrations, due to a decrease in carrier mobility. The same decrease in mobility was not observed in thin films of the material processed at lower temperatures. Strong emissions at around 611 nm were observed for Eu-doped In2O3, demonstrating the possibility of obtaining photoluminescence in a TCO host, while no emissions was observed for Nd- and Tb-doping.

9.
Dalton Trans ; 43(5): 2127-33, 2014 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-24281270

RESUMO

Blue-green luminescent octoxy capped Si nanoparticles were synthesized via homogeneous reduction of SiCl4 with the crown ether alkalide K(+)(15-crown-5)2K(-) in tetrahydrofuran. The Si nanoparticles were characterized with respect to size, crystal structure, morphology, surface termination, optical properties and stability. Si diamond structure nanoparticles with narrow size distributions, and average diameters ranging from 3 to 7 nm were obtained. A finite-size effect on the lattice dimensions was observed, in the form of an expansion of the [220] lattice planes of smaller Si nanoparticles. The concentration of SiCl4 was found to be the most important parameter governing the particle size and size distribution. The octoxy capped particles were stable under an ambient atmosphere for at least one month, but exposure to water made them prone to oxidation. An average radiative recombination lifetime of 8.8 ns was measured for the blue-green luminescence. The luminescence appears to originate from surface defects, rather than from quantum confinement.

10.
Neurocase ; 20(2): 192-207, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23425233

RESUMO

The present study investigated hierarchical lexical semantic structure in oral descriptions of concrete word meanings produced by a subject (ZZ) diagnosed with anomic aphasia due to left occipital lesions. The focus of the analysis was production of a) nouns at different levels of semantic specificity (e.g., "robin"-"bird"-"animal") and b) words describing sensory or motor experiences (e.g., "blue," "soft," "fly"). Results show that in contrast to healthy and aphasic controls, who produced words at all levels of specificity and mainly vision-related sensory information, ZZ produced almost exclusively nouns at the most non-specific levels and words associated with sound and movement.


Assuntos
Anomia/diagnóstico , Lobo Occipital/patologia , Semântica , Idoso , Anomia/etiologia , Humanos , Masculino , Acidente Vascular Cerebral/complicações
11.
Magn Reson Med ; 71(2): 885-92, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23447110

RESUMO

PURPOSE: Vulnerable atherosclerotic plaques are structurally weak and prone to rupture, presumably due to local oxidative stress. Redox active iron is linked to oxidative stress and the aim of this study was to investigate the distribution of Fe(III) in carotid plaques and its relation to vulnerability for rupture. METHODS: Atherosclerotic plaques from 10 patients (three asymptomatic and seven symptomatic) were investigated. Plaque vulnerability was classified using ultrasound and immunohistochemistry and correlated to Fe(III) measured by electron paramagnetic resonance spectroscopy. RESULTS: Large intra-plaque Fe(III) variations were found. Plaques from symptomatic patients had a higher Fe(III) concentration as compared with asymptomatic plaques (0.36 ± 0.21 vs. 0.06 ± 0.04 nmol Fe(III)/mg tissue, P < 0.05, in sections adjoining narrowest part of the plaques). All but one plaque from symptomatic patients showed signs of cap rupture. No plaque from asymptomatic patients showed signs of cap rupture. There was a significant increase in cap macrophages in plaques from symptomatic patients compared with asymptomatic patients (31 ± 11% vs. 2.3 ± 2.3%, P < 0.01). CONCLUSION: Fe(III) distribution varies substantially within atherosclerotic plaques. Plaques from symptomatic patients had significantly higher concentrations of Fe(III), signs of cap rupture and increased cap macrophage activity.


Assuntos
Aterosclerose/diagnóstico , Aterosclerose/metabolismo , Estenose das Carótidas/diagnóstico , Estenose das Carótidas/metabolismo , Espectroscopia de Ressonância de Spin Eletrônica/métodos , Ferro/metabolismo , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Distribuição Tecidual , Ultrassonografia/métodos
12.
Psychophysiology ; 50(10): 963-73, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23889039

RESUMO

Exercise has widely documented cardioprotective effects, but the mechanisms behind these effects are still poorly understood. Here, we test the hypothesis that aerobic training lowers cardiovascular sympathetic responses to and speeds recovery from challenge. We conducted a randomized, controlled trial contrasting aerobic versus strength training on indices of cardiac (pre-ejection period, PEP) and vascular (low-frequency blood pressure variability, LF-BPV) sympathetic responses to and recovery from psychological and orthostatic challenge in 149 young, healthy, sedentary adults. Aerobic and strength training did not alter PEP or LF-BPV reactivity to or recovery from challenge. These findings, from a large randomized, controlled trial using an intent-to-treat design, show that moderate aerobic exercise training has no effect on PEP and LF-BPV reactivity to or recovery from psychological or orthostatic challenge. In healthy young adults, the cardioprotective effects of exercise training are unlikely to be mediated by changes in sympathetic activity.


Assuntos
Condicionamento Físico Humano/métodos , Treinamento Resistido/métodos , Estresse Fisiológico/fisiologia , Estresse Psicológico/fisiopatologia , Sistema Nervoso Simpático/fisiologia , Adulto , Pressão Sanguínea/fisiologia , Cardiografia de Impedância , Sistema Cardiovascular , Eletrocardiografia , Exercício Físico , Feminino , Frequência Cardíaca/fisiologia , Humanos , Masculino
13.
Brain Cogn ; 80(2): 237-49, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22935543

RESUMO

Whereas neuroimaging studies of healthy subjects have demonstrated an association between the anterior cingulate cortex (ACC) and cognitive control functions, including response monitoring and error detection, lesion studies are sparse and have produced mixed results. Due to largely normal behavioral test results in two patients with medial prefrontal lesions, a hypothesis has been advanced claiming that the ACC is not involved in cognitive operations. In the current study, two comparably rare patients with unilateral lesions to dorsal medial prefrontal cortex (MPFC) encompassing the ACC were assessed with neuropsychological tests as well as Event-Related Potentials in two experimental paradigms known to engage prefrontal cortex (PFC). These included an auditory Novelty Oddball task and a visual Stop-signal task. Both patients performed normally on the Stroop test but showed reduced performance on tests of learning and memory. Moreover, altered attentional control was reflected in a diminished Novelty P3, whereas the posterior P3b to target stimuli was present in both patients. The error-related negativity, which has been hypothesized to be generated in the ACC, was present in both patients, but alterations of inhibitory behavior were observed. Although interpretative caution is generally called for in single case studies, and the fact that the lesions extended outside the ACC, the findings nevertheless suggest a role for MPFC in cognitive control that is not restricted to error monitoring.


Assuntos
Neoplasias Encefálicas/fisiopatologia , Cognição/fisiologia , Função Executiva/fisiologia , Glioma/fisiopatologia , Giro do Cíngulo/fisiopatologia , Córtex Pré-Frontal/fisiopatologia , Adulto , Atenção/fisiologia , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/psicologia , Potenciais Evocados/fisiologia , Glioma/patologia , Glioma/psicologia , Giro do Cíngulo/patologia , Humanos , Masculino , Testes Neuropsicológicos , Córtex Pré-Frontal/patologia , Tempo de Reação/fisiologia
14.
Brain Inj ; 26(13-14): 1586-98, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22731818

RESUMO

OBJECTIVE: This study examined the effects of chronic focal lesions to the lateral prefrontal cortex (LPFC) or orbitofrontal cortex (OFC) on neuropsychological test performance and self-reported executive functioning in everyday living. METHODS: Fourteen adults with OFC lesions were compared to 10 patients with LPFC injuries and 21 healthy controls. Neuropsychological tests with emphasis on measures of cognitive executive function were administered along with the Behavior Rating Inventory of Executive Functions (BRIEF-A) and a psychiatric screening instrument. RESULTS: The LPFC group differed from healthy controls on neuropsychological tests of sustained mental effort, response inhibition, working memory and mental switching, while the BRIEF-A provided more clinically important information on deficits in everyday life in the OFC group compared to the LPFC group. Correlations between neuropsychological test results and BRIEF-A were weak, while the BRIEF-A correlated strongly with emotional distress. CONCLUSIONS: It was demonstrated that LPFC damage is particularly prone to cause cognitive executive deficit, while OFC injury is more strongly associated with self-reported dysexecutive symptoms in everyday living. The study illustrates the challenge of identifying executive deficit in individual patients and the lack of strong anatomical specificity of the currently employed methods. There is a need for an integrative methodological approach where standard testing batteries are supplemented with neuropsychiatric and frontal-specific rating scales.


Assuntos
Lesões Encefálicas/fisiopatologia , Transtornos Cognitivos/etiologia , Transtornos Cognitivos/fisiopatologia , Função Executiva , Lobo Frontal/lesões , Lobo Frontal/fisiopatologia , Atividades Cotidianas , Adulto , Análise de Variância , Lesões Encefálicas/epidemiologia , Lesões Encefálicas/psicologia , Transtornos Cognitivos/epidemiologia , Transtornos Cognitivos/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Noruega/epidemiologia , Córtex Pré-Frontal/lesões , Córtex Pré-Frontal/fisiopatologia , Autorrelato
15.
Med Biol Eng Comput ; 48(5): 415-22, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20107915

RESUMO

The aim of this study was to validate a non-invasive optical probe for simultaneous blood flow measurement at different vascular depths combining three photoplethysmography (PPG) channels and laser Doppler flowmeter (LDF). Wavelengths of the PPG were near-infrared 810 nm with source-to-detector separation of 10 and 25 mm, and green 560 nm with source-to-detector separation of 4 mm. The probe is intended for clinical studies of pressure ulcer aetiology. The probe was placed over the trapezius muscle, and depths from the skin to the trapezius muscle were measured using ultrasound and varied between 3.8 and 23 mm in the 11 subjects included. A provocation procedure inducing a local enhancement of blood flow in the trapezius muscle was used. Blood flows at rest and post-exercise were compared. It can be concluded that this probe is useful as a tool for discriminating between blood flows at different vascular tissue depths. The vascular depths reached for the different channels in this study were at least 23 mm for the near-infrared PPG channel (source-to-detector separation 25 mm), 10-15 mm for the near-infrared PPG channel (separation 10 mm), and shallower than 4 mm for both the green PPG channel (separation 4 mm) and LDF.


Assuntos
Fluxometria por Laser-Doppler/métodos , Músculo Esquelético/irrigação sanguínea , Fotopletismografia/métodos , Pele/irrigação sanguínea , Adulto , Exercício Físico/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fluxo Sanguíneo Regional/fisiologia , Adulto Jovem
16.
J Mater Sci Mater Med ; 20(7): 1401-8, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19252970

RESUMO

To improve the clinical outcome of metal implants, i.e. earlier loading and reduction of the incidence of revision surgery, better bone bonding ability is wanted. One method to achieve this is to change the surface chemistry to give a surface that facilitates bone bonding in vivo, i.e. a bioactive surface. Crystalline titanium oxide has recently been proven to be bioactive in vitro and is an interesting option to the more common hydroxylapatite (HA) coatings on implants. A materials possible in vitro bioactivity is tested through soaking in simulated body fluid and studies of possible HA formation on the surface. For bioactive materials, the formed HA layer can also be used as a coating. The aim of the current paper is to investigate some boundary conditions for HA formation on crystalline titanium oxide surfaces regarding influence from coating thickness, soaking time and soaking temperature. The influence from soaking time and temperature on the HA growth were investigated on oxidised Ti samples, (24 h at 800 degrees C) resulting in a rutile surface structure. The oxidised samples were tested at three temperatures (4, 37 and 65 degrees C) and four times (1 h, 1 day, 1 week and 4 weeks). The influence from titanium coating thickness on the HA growth was investigated via depositing thin films of crystalline titanium dioxide on Ti plates using a reactive magnetron sputtering process. Four different PVD runs with coating thicknesses between 19 and 74 nm were tested. The soaking temperature had an effect on the HA formation and growth on both rutile surfaces and native oxide on Ti substrates. Higher temperatures lead to easier formation of HA. It was even possible, at 65 degrees C, to grow HA on native titanium oxide from soaking in PBS. The coating quality was better for HA formed at 65 degrees C compared to 37 degrees C. All PVD-coatings showed HA growth after 1 week in PBS at 37 degrees C, thus even very thin coatings of crystalline titanium oxide coatings are bioactive.


Assuntos
Biomimética/métodos , Materiais Revestidos Biocompatíveis/química , Cristalização/métodos , Durapatita/química , Teste de Materiais , Titânio/química , Oxirredução , Propriedades de Superfície , Temperatura
17.
Eur J Clin Microbiol Infect Dis ; 27(10): 929-35, 2008 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-18592281

RESUMO

The purpose of this study was to determine the prevalence of acquired antimicrobial resistance in Streptococcus pneumoniae isolated from nasopharyngeal swabs and blood and cerebrospinal fluid (CSF) specimens of 3,028 children hospitalized with signs or symptoms of pneumonia, sepsis, or meningitis in rural Philippines between 1994 and 2000. Pneumococci were identified using standard methods, serotyped, and their susceptibility to oxacillin, erythromycin, tetracycline, chloramphenicol, and trimethoprim-sulfamethoxazole was determined using the disk diffusion method. Penicillin minimum inhibitory concentrations (MICs) of the oxacillin-resistant isolates were further tested. The clonality of the penicillin-nonsusceptible (PNSP) isolates was analyzed using pulsed-field gel electrophoresis (PFGE) and multi-locus sequence typing (MLST). Altogether 1,048 isolates were analyzed, of which 35 were invasive and 1,013 nasopharyngeal isolates. None was resistant, but 22 (2.1%) were intermediately resistant to penicillin, 4 (0.2%) were resistant to chloramphenicol, 3 (0.2%) to erythromycin, 39 (3.7%) to tetracycline, and 4 (0.2%) to trimethoprim/sulfamethoxazole. Twelve of the 22 PNSP isolates were of serotype 14 and of sequence type 63. These included the two invasive PNSP isolates. PFGE profiling further identified three separate clusters among the sequence of type 63, serotype 14 (ST63(14)) isolates. Antimicrobial resistance in both invasive and nasopharyngeal pneumococcal pediatric isolates in rural Philippines is rare. In spite of this remote setting, the PNSP isolates of the serotype 14 clusters were of ST63 type, which has been described previously on other continents.


Assuntos
Antibacterianos/farmacologia , Farmacorresistência Bacteriana , Meningite Pneumocócica/microbiologia , Nasofaringe/microbiologia , Infecções Pneumocócicas/microbiologia , Pneumonia Pneumocócica/microbiologia , Sepse/microbiologia , Streptococcus pneumoniae/efeitos dos fármacos , Técnicas de Tipagem Bacteriana , Sangue/microbiologia , Líquido Cefalorraquidiano/microbiologia , Pré-Escolar , Impressões Digitais de DNA , DNA Bacteriano/genética , Eletroforese em Gel de Campo Pulsado , Genótipo , Humanos , Lactente , Recém-Nascido , Testes de Sensibilidade Microbiana , Filipinas , População Rural , Streptococcus pneumoniae/classificação , Streptococcus pneumoniae/genética , Streptococcus pneumoniae/isolamento & purificação
18.
J Psychiatr Ment Health Nurs ; 15(3): 219-28, 2008 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-18307651

RESUMO

The negative mental health consequences of intimate partner violence have been well documented in recent years. One aim of the present study was to examine psychological distress and mental problems in assaulted women who have left their relationships. Another aim was to explore these women's sense of coherence (SOC). A combination of qualitative in-depth interviews and quantitative measurement instruments was used. Data were collected from 14 assaulted women with a mean age of 38, living in different places in Sweden. Impact of event scale-revised and symptom checklist-90-R show that the violence creates long-term psychological stress reactions and confirm previous research on the subject. Twelve of the 14 women have symptoms of post-traumatic stress disorder (PTSD). The result of the interviews confirmed complex PTSD and disorders of extreme stress not otherwise specified. On the other hand we found a surprisingly high SOC level among several of the respondents, a fact which could explain why these women finally managed to leave mainly by their own efforts. We call for more both qualitative and quantitative studies on this serious public health issue.


Assuntos
Adaptação Psicológica , Maus-Tratos Conjugais/psicologia , Transtornos de Estresse Traumático/etiologia , Adulto , Medo , Feminino , Humanos , Pessoa de Meia-Idade , Transtornos de Estresse Pós-Traumáticos/etiologia , Transtornos de Estresse Pós-Traumáticos/psicologia , Transtornos de Estresse Traumático/psicologia , Suécia
19.
Lupus ; 16(9): 701-6, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17728362

RESUMO

The objective was to evaluate the efficacy of the information policy given to all systemic lupus erythematosus (SLE) patients. One hundred consecutive SLE patients were asked to answer anonymously a questionnaire covering demographic issues including education, adherence with prescriptions and advice given and methods of sourcing information. Seventy-three females and ten males responded. The demographic data showed that 34 had a university education, 29 high school and 19 primary school education. An inability to work due to disease was increased compared with the matched population (P < 0.001). Forty-two reported that they had received advice about physical training and forty of them followed this advice. Only 28 out of 46 smokers reported that they had got any advice about smoking, and out of these only 13 followed the advice. The patients with university background were less likely to smoke (P < 0.05) and followed the advice more often (P < 0.05). Most patients followed given advice about exposure to sunlight. Thirty-five percent of those prescribed glucocorticoids reported that they varied from the prescribed dosages without consultation with their specialist. This behaviour was more common in the university group (P < 0.05), this grouping also had a higher median dosage. Seventy-three patients had read the booklet about SLE provided by the clinic. Accessing internet information was more common for those with university education (P < 0.01). This study shows that on the whole SLE patients follow given advice, but adherence varies. Aside from the issue of glucocorticoid dosage adherence, educational level seems to be the most important predictor for adherence to advice. Thus, we conclude that a more individualized approach to delivery of information is required and better follow up is needed.


Assuntos
Lúpus Eritematoso Sistêmico/terapia , Cooperação do Paciente , Educação de Pacientes como Assunto/normas , Adulto , Idoso , Atenção à Saúde/normas , Pessoas com Deficiência , Escolaridade , Feminino , Glucocorticoides/administração & dosagem , Glucocorticoides/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade , Padrões de Prática Médica/estatística & dados numéricos , Inquéritos e Questionários
20.
Antimicrob Agents Chemother ; 50(5): 1855-8, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16641460

RESUMO

The telithromycin susceptibility of 210 erythromycin-resistant pneumococci was tested with the agar diffusion method. Twenty-six erm(B)-positive isolates showed heterogeneous resistance to telithromycin, which was manifested by the presence of colonies inside the inhibition zone. When these cells were cultured and tested, they showed stable, homogeneous, and high-level resistance to telithromycin.


Assuntos
Antibacterianos/farmacologia , Resistência Microbiana a Medicamentos/genética , Cetolídeos/farmacologia , Macrolídeos/farmacologia , Streptococcus pneumoniae/efeitos dos fármacos , Sequência de Bases , Genes Bacterianos , Humanos , Testes de Sensibilidade Microbiana , Dados de Sequência Molecular , Regiões Promotoras Genéticas , Streptococcus pneumoniae/isolamento & purificação , Streptococcus pneumoniae/fisiologia
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