Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 32
Filtrar
Más filtros

Bases de datos
País/Región como asunto
Tipo del documento
País de afiliación
Intervalo de año de publicación
1.
Z Gerontol Geriatr ; 53(6): 577-589, 2020 Oct.
Artículo en Alemán | MEDLINE | ID: mdl-32666157

RESUMEN

The clinical symptom dizziness encompasses a broad range of complaints. The prevalence among older adults is high. Over the course of 1 year 50% of people over 80 years old, 30% of those between 70-80 years old and 20% between 60-70 years old contact a physician as a result of dizziness. The diagnostic process has to be well organized. The medical history and clinical examination are frequently underestimated but in many cases are crucial. Extensive investigations should only be carried out in cases of a firmly suspected diagnosis. A good interdisciplinary cooperation can positively influence the diagnostic process. The awareness of red flags also helps to detect emergency patients with dizziness. This article discusses the differential diagnosis of dizziness in older adults and provides appropriate recommendations for the diagnostic process.


Asunto(s)
Mareo , Vértigo , Anciano , Anciano de 80 o más Años , Diagnóstico Diferencial , Mareo/diagnóstico , Servicio de Urgencia en Hospital , Humanos , Examen Físico , Vértigo/diagnóstico
2.
Internist (Berl) ; 61(3): 254-260, 2020 Mar.
Artículo en Alemán | MEDLINE | ID: mdl-32030437

RESUMEN

The peripheral nervous system is subject to changes during the aging process, e.g., deep tendon reflexes decrease, as proprioception does. In contrast, polyneuropathies have to be distinguished from age-associated changes as independent diseases with etiologies similar to those in younger ages. Incidence of polyneuropathies is reported about 118/100,000, the overall prevalence in the general population is estimated to be about 1% and rises to up to 7% in the elderly. Etiology includes metabolic disorders, primary inflammatory polyneuropathies, systemic disorders and vasculitic neuropathies. Due to the age-specific increase of the prevalence of certain etiologies, neuropathies associated with diabetes, malignancy, and monoclonal gammopathies are even more common in older patients. However, the proportion of cryptogenic neuropathies, e.g. neuropathies without obvious cause, increases also with age. In older age, polyneuropathies additionally impair mobility and increase the risk of falling, thus the assessment of functional abilities is mandatory. It is essential to try to identify the underlying cause by a systematic approach including history, clinical investigation, neurophysiological and lab exams. Treatment of polyneuropathies is based on therapy of underlying conditions and requires management of neuropathic pain in the majority of cases. Physiotherapy and rehabilitation target pain relief and sustaining activities of daily living.


Asunto(s)
Envejecimiento , Nefropatías Diabéticas , Gammopatía Monoclonal de Relevancia Indeterminada , Paraproteinemias , Polineuropatías/etiología , Actividades Cotidianas , Anciano , Humanos , Neuralgia , Manejo del Dolor
3.
Age Ageing ; 48(5): 719-724, 2019 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-31112221

RESUMEN

INTRODUCTION: we examined the consequences of applying the new EWGSOP2 algorithm for sarcopenia screening instead of the former EWGSOP algorithm (EWGSOP1) in geriatric inpatients. METHODS: the dataset of our formerly published Sarcopenia in Geriatric Elderly (SAGE) study includes 144 geriatric inpatients (86 women, 58 men, mean age 80.7±5.6 years) with measurements of gait speed, handgrip strength and appendicular muscle mass by dual x-ray absorptiometry (DXA). We analysed the agreement between EWGSOP and EWGSOP2 algorithms in identifying patients as sarcopenic/non-sarcopenic. Differences in the distribution sarcopenic vs. non-sarcopenic were assessed by Chi²-test. RESULTS: sarcopenia prevalence according to EWGSOP1 (41 (27.7%)) was significantly higher than with EWGSOP2 (26(18.1%), p<0.05). The sex-specific sarcopenia prevalence was 22.1% (EWGSOP1) and 17.4% (EWGSOP2), respectively, for women (difference not significant) and 37.9% vs. 19.4% for men (p<0.05%). The overall agreement in classifying subjects as sarcopenic/non-sarcopenic was 81.25% (81.4% for women, 81.0% for men). However, among the 41 sarcopenia cases identified by EWGSOP1, only 20 (48.8%) were diagnosed with sarcopenia by EWGSOP2 (9/19 w (47.4%), 11/22 m (50.0%)). Ten of 19 women (52.6%) and 11 of 22 men (50.0%) diagnosed with sarcopenia by EWGSOP1 were missed by EWGSOP2, while 6 of 15 women (40.0%) and 0 of 11 men (0.0%) were newly diagnosed. DISCUSSION: there is a substantial mismatch in sarcopenia case finding according to EWGSOP1 and EWGSOP2. The overall prevalence and the number of men diagnosed with sarcopenia are significantly lower in EWGSOP2. While the absolute number of women identified as sarcopenic remains relatively constant, the overlap of individual cases between the two definitions is low.


Asunto(s)
Algoritmos , Marcha/fisiología , Evaluación Geriátrica/métodos , Fuerza de la Mano/fisiología , Pacientes Internos , Guías de Práctica Clínica como Asunto , Sarcopenia/diagnóstico , Absorciometría de Fotón , Anciano , Anciano de 80 o más Años , Austria/epidemiología , Diagnóstico Diferencial , Femenino , Humanos , Incidencia , Masculino , Prevalencia , Estudios Retrospectivos , Sarcopenia/epidemiología , Sarcopenia/fisiopatología
4.
Z Gerontol Geriatr ; 52(7): 688-693, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31049683

RESUMEN

BACKGROUND: Sarcopenia and osteoporosis share an underlying pathology and reinforce each other in terms of negative outcomes. OBJECTIVE: To evaluate the extent of concomitance of sarcopenia as defined by the European Working Group on Sarcopenia in Older People (EWGSOP) and osteoporosis as defined by the World Health Organization (WHO) in geriatric inpatients and their relationship to nutritional and functional status. MATERIAL AND METHODS: A cross-sectional analysis of geriatric inpatients from the sarcopenia in geriatric elderly (SAGE) study. Measurements included dual X­ray absorptiometry for bone mineral density and appendicular muscle mass; gait speed and hand grip strength, the Barthel index, body mass index (BMI) and the mini nutritional assessment short form (MNA-SF). RESULTS: Of the 148 patients recruited for SAGE, 141 (84 women, 57 men; mean age 80.6 ± 5.5 years) had sufficient data to be included in this ancillary investigation: 22/141 (15.6%) were only osteoporotic, 19/141 (13.5%) were only sarcopenic and 20/141 (14.2%) osteosarcopenic (i.e. both sarcopenia and osteoporosis). The prevalence of osteoporosis was higher in sarcopenic than in non-sarcopenic individuals (51.3% vs. 21.6%, p < 0.001). Sarcopenic, osteoporotic and osteosarcopenic subjects had a lower BMI, MNA-SF, handgrip and gait speed (p < 0.05) than the reference group (those neither osteoporotic nor sarcopenic, n = 80). The Barthel index was lower for sarcopenic and osteosarcopenic (p < 0.05) but not for osteoporotic (p = 0.07) subjects. The BMI and MNA-SF were lower in osteosarcopenia compared to sarcopenia or osteoporosis alone (p < 0.05) while there were no differences in functional criteria. CONCLUSION: Osteoporosis and sarcopenia are linked to nutritional deficits and reduced function in geriatric inpatients. Co-occurrence (osteosarcopenia) is common and associated with a higher degree of malnutrition than osteoporosis or sarcopenia alone.


Asunto(s)
Osteoporosis , Sarcopenia , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Marcha , Fuerza de la Mano , Humanos , Masculino , Osteoporosis/complicaciones , Osteoporosis/epidemiología , Prevalencia , Sarcopenia/complicaciones , Sarcopenia/epidemiología
5.
Schmerz ; 29(2): 203-10, 2015 Apr.
Artículo en Alemán | MEDLINE | ID: mdl-25605233

RESUMEN

BACKGROUND: Adequate and sufficient data on pain in nursing home residents is still lacking in Austria. This study intends to gather and increase available data on pain and pain assessment as well as identify potential improvement possibilities. STUDY PARTICIPANTS AND METHODS: Using a cross-sectional design, 425 residents from 12 Austrian nursing homes were recruited. The selected homes were selected as a cluster sample from 29 homes operated by one carrier. Pain assessment of cognitively intact as well as cognitively impaired residents was conducted using questionnaires, observation, and medical record examination. RESULTS: Pain prevalence was dependent on type of resident and ranged between 37.9 and 73.1 %. Sensitivity of the proxy assessment instruments varied between 47.7 and 87.7 %. Overall, 81 % of residents with daily recurring pain have been pain sufferers for at least one year. Between 40 and 68 % do not disclose their pain or consider their pain as being a part of aging. CONCLUSION: Our data on pain indicate a definite need for action. Accurately detecting pain requires reliable and resident-adapted means of assessment. Varying prevalence, specificity, and sensitivity numbers indicate the need for further research.


Asunto(s)
Dolor Crónico/epidemiología , Hogares para Ancianos/estadística & datos numéricos , Casas de Salud/estadística & datos numéricos , Dimensión del Dolor/estadística & datos numéricos , Actividades Cotidianas/clasificación , Anciano , Austria , Dolor Crónico/diagnóstico , Análisis por Conglomerados , Estudios Transversales , Medicina Basada en la Evidencia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Manejo del Dolor/métodos , Manejo del Dolor/estadística & datos numéricos
6.
Z Gerontol Geriatr ; 48(1): 29-34, 2015 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-24292516

RESUMEN

BACKGROUND: Gait disorders are common in the elderly, compromising quality of life and increasing the risk for falls. Mobility and fall risk assessment usually includes measurement of gait velocity. Computerized gait analyses are able to measure additional gait parameters. MATERIALS AND METHODS: This study addressed the question whether elderly patients (n=66) change their self-selected gait speed when walking on a computerized platform compared to a 10-m walk test. A second aim was to compare gait velocity, gait parameters, and clinical measurements (TUG, POMA) in subgroups of patients with a history of a fall (n=27) vs. without a history of a fall (n=39). RESULTS: Our results demonstrate that gait velocity was significantly reduced in the subgroup of fallers, but not in the group of nonfallers. Moreover, other gait parameters and the clinical tests differed significantly between fallers and nonfallers. DISCUSSION: A possible explanation could be the visual requirements of the test environment, which may influence the walking speed in terms of a dual-task paradigm in those participants with mobility problems.


Asunto(s)
Accidentes por Caídas/prevención & control , Trastornos Neurológicos de la Marcha/diagnóstico , Trastornos Neurológicos de la Marcha/fisiopatología , Evaluación Geriátrica/métodos , Examen Físico/métodos , Caminata , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
7.
Z Gerontol Geriatr ; 47(7): 577-82, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24292515

RESUMEN

BACKGROUND: To date, short dementia screenings are often limited by poor specificity or still take too much time with respect to the restricted resources of primary care physicians and the increasing number of dementia disorders. As a new instrument, the three-question dementia screening (SDTP, Salzburg Dementia Test Prediction) should be compared with the eight-item screening of Chen et al. and the CERAD battery (Consortium to Establish a Registry for Alzheimer's Disease), focusing on specificity and economy of time. MATERIALS AND METHODS: We tested 404 patients (243 women). The mean age of the subjects was 80.1 years (SD = 6.8) for men and 83.2 years (SD = 6.0) for women. The mean Mini-Mental State Examination (MMSE) score was 21.9 (SD = 5.8) for men and 21.1 (SD = 6.3) for women. Artificial neural networks (ANNs) were used to find a mathematical model that allows the total MMSE to be predicted with only three questions of the MMSE. This is achieved by multiplying the outcome of the three best predictor questions with a weighting coefficient, which was delineated by using ANNs. RESULTS: The Salzburg Dementia Test Prediction (SDTP) had a sensitivity of 94% (95% CI: 87-97%) for screening of possible dementia, when the MMSE (MMSE < 25/30) was used as the reference test method and 96% when the CERAD was used. The specificity was 68% (95% CI: 57-77%) if the MMSE was used and 70% if the whole test battery (CERAD) was used, which is as sensitive as and more specific than the eight-item screening. CONCLUSION: The SDTP is a time-saving instrument for screening of dementia, which is as sensitive as and more specific than the eight-item screening of Chen et al. and provides a prediction of the MMSE with high accuracy.


Asunto(s)
Demencia/diagnóstico , Diagnóstico por Computador/métodos , Evaluación Geriátrica/métodos , Tamizaje Masivo/métodos , Redes Neurales de la Computación , Psicometría/métodos , Encuestas y Cuestionarios , Anciano de 80 o más Años , Austria , Femenino , Humanos , Masculino , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
8.
Z Gerontol Geriatr ; 47(5): 425-38; quiz 439-40, 2014 Jul.
Artículo en Alemán | MEDLINE | ID: mdl-24609425

RESUMEN

Delirium, the acute deterioration of cognitive function and attention, is the most frequent mental disorder in elderly. Its correct diagnosis and adequate management are of crucial importance for the patient's health and functional outcome. First of all, one has to be aware of the possibilities of preventing this complex, potentially life-threatening problem, which means recognizing the patient at risk, avoiding environmental stress and causal factors (i.e., anticholinergic medication) in cognitively impaired patients, and timely reaction to prodromal symptoms. Causal therapy (i.e., treatment of the causal condition and/or eliminating the precipitating situation) is imperative. It must be accompanied by nursing and environmental measures and, if necessary, by antipsychotic and/or sedating symptomatic treatment.


Asunto(s)
Antipsicóticos/administración & dosificación , Trastornos del Conocimiento/diagnóstico , Delirio/diagnóstico , Delirio/prevención & control , Evaluación Geriátrica/métodos , Hipnóticos y Sedantes/administración & dosificación , Anciano , Anciano de 80 o más Años , Trastornos del Conocimiento/psicología , Trastornos del Conocimiento/terapia , Terapia Combinada/métodos , Delirio/psicología , Femenino , Alemania , Humanos , Masculino , Grupo de Atención al Paciente/organización & administración , Síntomas Prodrómicos , Evaluación de Síntomas
9.
Z Gerontol Geriatr ; 45(1): 55-66; quiz 67-8, 2012 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-22278008

RESUMEN

Among geriatric patients, atrial fibrillation is the most common cardiac arrhythmia. In patients over 80 years of age, the prevalence rises to approximately 10%. Atrial fibrillation is associated with serious health implications, including a 2-fold increase in mortality risk and a 5-fold increase in stroke risk. In contrast to these facts, the current guidelines on the management of atrial fibrillation of the European Society of Cardiology (ESC) contain only a short paragraph on these patients. Many relevant clinical aspects go without any comment. Thus, the purpose of our paper is to discuss those special needs of geriatric patients and their physicians which are not mentioned in the guidelines of the ESC. In our review, we discuss rhythm versus rate control, oral anticoagulation, outcome, prevention, falls, adherence, polypharmacy, dementia, nursing home patients, frailty, and geriatric assessment in consideration of geriatric patients. An extended search of the literature on Pubmed served as the basis for this review. Individual aspects of each geriatric patient should be considered when managing these complex patients; however, the complexity of each case must not lead to an individualized therapy that is not in accordance with current guidelines and the literature. A large number of papers which help us to answer most of the clinical questions regarding the management of trial fibrillation in geriatric patients have already been published.


Asunto(s)
Antiarrítmicos/uso terapéutico , Anticoagulantes/uso terapéutico , Fibrilación Atrial/diagnóstico , Fibrilación Atrial/terapia , Estimulación Cardíaca Artificial/métodos , Evaluación Geriátrica/métodos , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino
10.
Eur J Neurol ; 18(2): 306-311, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20629718

RESUMEN

BACKGROUND: We aimed at determining the safety and efficacy of IV alteplase in Austrian versus non-Austrian centres as documented in the Internet-based registers Safe Implementation of Thrombolysis for Stroke - MOnitoring STudy (SITS-MOST) and - International Stroke Thrombolysis Register (SITS-ISTR). METHODS: We analysed patient data entered in the registers SITS-MOST and SITS-ISTR in the period December 2002 to 15 November 2007. RESULTS: Compared to the non-Austrian cohort (n=15153), the Austrian cohort (n=896) was slightly older [median, interquartile range (IQR): 70, 60-77 years vs. 69, 60-76 years, P=0.05] and included more women (44.6% vs. 41.0%, P=0.03). Austrian patients had a significantly shorter stroke onset-to-treatment time (OTT; median, IQR: 135, 105-160 min vs. 145, 115-170 min, P<0.0005). Symptomatic intracerebral haemorrhages were observed in 1.6% of Austrian and 1.7% of non-Austrian patients (P=0.82). At 3 months, 50.8% of Austrian and 53.0% of non-Austrian patients were independent (P=0.23), but death was less frequent in Austrian patients (12.1% vs. 14.9%, P=0.03). Multivariate analyses adjusted for demographic and baseline characteristics confirmed lower mortality at 3 months in the Austrian cohort (odds ratio 0.81, 95% confidence intervals 0.71-0.92, P=0.001). Longer OTT was associated with increased mortality at 3 months, with a hazard ratio of 1.02 (95% CI 1.01-1.03; P=0.005) for each 10-min increase in OTT. CONCLUSIONS: The implementation of intravenous alteplase for acute stroke has been safe and efficacious in Austrian centres. OTT and mortality were significantly lower in Austrian patients compared to non-Austrian SITS centres.


Asunto(s)
Fibrinolíticos/uso terapéutico , Accidente Cerebrovascular/tratamiento farmacológico , Terapia Trombolítica/estadística & datos numéricos , Activador de Tejido Plasminógeno/uso terapéutico , Anciano , Austria , Femenino , Humanos , Masculino , Persona de Mediana Edad , Sistema de Registros , Resultado del Tratamiento
12.
Neuropsychiatr ; 24(2): 67-87, 2010.
Artículo en Alemán | MEDLINE | ID: mdl-20605003

RESUMEN

The Austrian Alzheimer Society developed evidence-based guidelines based on a systematic literature search and criteria-guided assessment with subsequent transparent determination of grades of clinical recommendation. The authors evaluated currently available therapeutic approaches for the most common forms of dementia and focused on diagnosis and pharmacological intervention, taking into consideration the situation in Austria. The purpose of these guidelines is the rational and cost-effective use of diagnostic and therapeutic measures in dementing illnesses. Users are physicians and all other providers of care for patients with dementia in Austria.


Asunto(s)
Demencia/diagnóstico , Demencia/tratamiento farmacológico , Medicina Basada en la Evidencia , Nootrópicos/uso terapéutico , Anciano , Anciano de 80 o más Años , Aminoácidos/efectos adversos , Aminoácidos/uso terapéutico , Antipsicóticos/efectos adversos , Antipsicóticos/uso terapéutico , Inhibidores de la Colinesterasa/efectos adversos , Inhibidores de la Colinesterasa/uso terapéutico , Trastornos del Conocimiento/diagnóstico , Trastornos del Conocimiento/tratamiento farmacológico , Estudios Transversales , Demencia/epidemiología , Demencia/etiología , Quimioterapia Combinada , Femenino , Ginkgo biloba , Humanos , Incidencia , Estilo de Vida , Cuidados a Largo Plazo , Masculino , Cumplimiento de la Medicación , Memantina/efectos adversos , Memantina/uso terapéutico , Persona de Mediana Edad , Extractos Vegetales/efectos adversos , Extractos Vegetales/uso terapéutico , Dinámica Poblacional , Psicotrópicos/efectos adversos , Psicotrópicos/uso terapéutico , Ensayos Clínicos Controlados Aleatorios como Asunto
13.
Arch Gerontol Geriatr ; 80: 98-103, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30419483

RESUMEN

BACKGROUND: Quantification of skeletal muscle mass is mandatory for diagnosing sarcopenia, a highly prevalent geriatric syndrome. While dual energy X-ray absorptiometry (DXA) is the reference method in a clinical context, bioimpedance analysis (BIA) is more readily applicable on a broad scale. Recently BIA equations for the prediction of appendicular skeletal muscle mass in higher age groups have been published, but data on their performance in geriatric inpatients are lacking. METHODS: In 144 geriatric inpatients (86 women and 58 men, mean age 80.7 ± 5.6 years) appendicular skeletal muscle mass was predicted by 4 different BIA equations and measured by DXA. Results were compared by linear regression analysis and Bland Altmann plots. The agreement with DXA in classifying subjects to have normal or reduced muscle mass was calculated for the BIA based approaches. RESULTS: The 4 BIA equations showed only minor differences in regression analysis, but major differences in mean error (range -0.98 kg to + 0.19 kg in women and -2.47 kg to -0.58 kg in men). Considering regression parameters and mean error, the equation of Scafoglieri et al. performed best, resulting in an agreement with DXA of more than 83%. Sensitivity to detect subjects with reduced muscle mass was <70% in the whole group for all BIA equations. CONCLUSION: The BIA equation of Scafoglieri et al. performs best in geriatric inpatients, with more than 83% of subjects classified correctly as having normal or reduced muscle mass compared to DXA. Low sensitivity to detect subjects with reduced muscle mass in geriatric inpatients remains a limitation of BIA.


Asunto(s)
Absorciometría de Fotón/métodos , Impedancia Eléctrica , Músculo Esquelético/patología , Sarcopenia/diagnóstico , Anciano , Anciano de 80 o más Años , Composición Corporal/fisiología , Femenino , Humanos , Masculino
14.
Eur J Clin Invest ; 38(1): 24-33, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18173548

RESUMEN

BACKGROUND: Among other matrix metalloproteinases (MMPs), gelatinase B (MMP-9) is discussed to be associated with the pathogenesis of vascular diseases. Two single nucleotide polymorphisms (SNPs) of the MMP-9 gene, C-1562T in the promoter region and a G/A transition in exon 6 (R + 279Q), have been addressed in previous association studies which, however, produced conflicting results. MATERIAL AND METHODS: A novel multiplex RealTime PCR protocol for the fast and simultaneous detection of both polymorphisms is presented, which was used for genotyping 1737 participants of a prospective study investigating genetic factors influencing the progression of atherosclerosis. RESULTS: Haplotype analysis revealed -1562C/+279Q as the major haplotype in this population. Allelic distribution of the C-1562T polymorphism was consistent with data published for similar cohorts; however, we found that R + 279Q allelic distribution appears to vary significantly among Caucasian populations. Considering clinical data available from 1487 participants, we found significant associations between the presence of atherosclerotic plaque and the CA-haplotype in men (P = 0.028, phi = 0.08), and between the AG variant of exon 6 and common carotid artery intima-media thickness (CIMT) in women (P = 0.004, Eta(2) = 0.019). CONCLUSIONS: In summary, our results demonstrate associations of MMP-9 genotypes with different stages of carotid atherosclerosis.


Asunto(s)
Arteriosclerosis/genética , Enfermedades de las Arterias Carótidas/genética , Metaloproteinasa 9 de la Matriz/genética , Polimorfismo Genético/genética , Adulto , Anciano , Arteriosclerosis/diagnóstico por imagen , Femenino , Haplotipos/genética , Humanos , Masculino , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa/métodos , Estudios Prospectivos , Ultrasonografía
15.
Arterioscler Thromb Vasc Biol ; 25(3): 604-10, 2005 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-15604415

RESUMEN

OBJECTIVE: Reactive oxygen species (ROS) contribute to atherogenesis. Uncoupling protein 2 (UCP2) reduces mitochondrial ROS generation and protects against the disease in animal models. A common -866G/A promoter polymorphism that has been associated with obesity and beta-cell function may also affect UCP2 gene expression in cells of the arterial wall. METHODS AND RESULTS: Genotype distributions of the -866G/A and of a 45nt-del/ins polymorphism in the 3'-untranslated region of the UCP2 gene were determined in 1334 participants of the Salzburg Atherosclerosis Prevention Program in Subjects at High Individual Risk (SAPHIR). We observed a modest association of the -866G/A promoter polymorphism and 2-loci haplotypes with asymptomatic carotid atherosclerosis in female study participants. Functional studies revealed increased expression of the -866G wild-type allele in human umbilical vein endothelial cells and differentiated THP-1 cells. Electrophoretic mobility shift assay studies and antibody-interference assays performed with nuclear extracts of various cell lines showed binding of cell-type specific protein complexes to the region encompassing the -866 site and suggested involvement of hypoxia inducible factor 1alpha in the regulation of UCP2 gene expression in endothelial cells and macrophages. CONCLUSIONS: Our results suggest a role of UCP2 in atherogenesis as originally proposed from studies in animal and cell culture models.


Asunto(s)
Enfermedades de las Arterias Carótidas/genética , Proteínas de Transporte de Membrana/genética , Proteínas Mitocondriales/genética , Polimorfismo de Nucleótido Simple , Adulto , Distribución por Edad , Anciano , Enfermedades de las Arterias Carótidas/epidemiología , Enfermedades de las Arterias Carótidas/metabolismo , Línea Celular , Estudios Transversales , Endotelio Vascular/citología , Femenino , Genotipo , Humanos , Hipertensión/epidemiología , Hipertensión/genética , Hipertensión/metabolismo , Canales Iónicos , Macrófagos/citología , Masculino , Proteínas de Transporte de Membrana/metabolismo , Persona de Mediana Edad , Proteínas Mitocondriales/metabolismo , Prevalencia , Especies Reactivas de Oxígeno/metabolismo , Factores de Riesgo , Distribución por Sexo , Proteína Desacopladora 2
16.
Atherosclerosis ; 165(1): 175-8, 2002 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-12208484

RESUMEN

BACKGROUND: An insertion/deletion (I/D) polymorphism of the gene for angiotensin-converting-enzyme (ACE) is associated with ACE plasma levels and activity. Conflicting results have been reported about the relevance of this polymorphism for atherosclerotic vascular disease. The aim of the present study was to analyze the role of this polymorphism for peripheral arterial disease (PAD). METHODS: The study was designed as a case-control study including 522 patients with documented PAD and 522 sex- and age-matched controls. ACE genotype was determined by size-analysis of polymerase chain reaction products. RESULTS: ACE genotype frequencies were similar between patients (II: 23.4%; ID: 44.8%; DD: 31.8%) and controls (II: 23.8%; ID: 48.3%; DD: 27.9%, P=0.37). The adjusted odds ratio of carriers of the DD genotype for PAD was 1.29 (95% confidence interval 0.95-1.75). The polymorphism was furthermore not associated with age at onset of PAD (P=0.56), Fontaine stage of the disease (P=0.68) or ankle/brachial index of patients (P=0.86). CONCLUSION: The ACE I/D polymorphism is not a significant risk factor for PAD.


Asunto(s)
Eliminación de Gen , Peptidil-Dipeptidasa A/genética , Enfermedades Vasculares Periféricas/genética , Polimorfismo Genético , Adulto , Distribución por Edad , Anciano , Austria/epidemiología , Estudios de Casos y Controles , Estudios de Cohortes , Femenino , Marcadores Genéticos/genética , Humanos , Incidencia , Modelos Logísticos , Masculino , Persona de Mediana Edad , Enfermedades Vasculares Periféricas/diagnóstico , Enfermedades Vasculares Periféricas/epidemiología , Probabilidad , Valores de Referencia , Medición de Riesgo , Factores de Riesgo , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad , Distribución por Sexo , Estadísticas no Paramétricas
17.
Hum Pathol ; 32(10): 1136-40, 2001 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11679949

RESUMEN

We report a 52-year-old woman who underwent otoneurosurgery to resect acoustic neurinoma. Bone reconstruction was performed with an aluminium (Al)-containing cement. Six weeks later the patient suffered from loss of consciousness, myoclonic jerks, and persistent grand mal seizures, clinical symptoms that resembled those of lethal dialysis encephalopathy of the 1960s and 1970s. She died 6 months later because of septic complications. Light- and electron-microscopic investigation of the central nervous system (CNS) showed pathognomonic Al-containing intracytoplasmic argyrophilic inclusions in choroid plexus epithelia, neurons, and cortical glia. These changes are characteristics of dialysis-associated encephalopathy (DAE), induced nowadays by long-term ingestion of Al-containing drugs (and with benign clinical courses). Atomic absorption spectrometry showed an increase of mean bulk Al concentration of the cortex and subcortex up to 9.3 microg/g (normal range <2 microg/g); laser microprobe showed the increase of Al in subcellular structures. This unique case again shows the extraordinary neurotoxicity of Al, which was, in our patient, initiated by an amount of about 30 mg Al and apparently caused by direct Al access to the brain parenchyma via a cerebrospinal fluid leakage.


Asunto(s)
Aluminio/envenenamiento , Encefalopatías/inducido químicamente , Oído Interno/cirugía , Complicaciones Posoperatorias , Aluminio/análisis , Silicatos de Aluminio/efectos adversos , Silicatos de Aluminio/química , Materiales Biocompatibles/efectos adversos , Materiales Biocompatibles/química , Cementos para Huesos/efectos adversos , Cementos para Huesos/química , Encéfalo/efectos de los fármacos , Encéfalo/metabolismo , Encéfalo/patología , Química Encefálica , Encefalopatías/patología , Resultado Fatal , Femenino , Cementos de Ionómero Vítreo/efectos adversos , Humanos , Persona de Mediana Edad , Convulsiones/etiología
18.
Biomed Pharmacother ; 58(10): 619-27, 2004 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-15589073

RESUMEN

The cholesteryl ester transfer protein (CETP) is responsible for the exchange of triglycerides and cholesteryl esters between lipoprotein particles leading to an increased hepatic clearance of HDL-cholesteryl esters. A high CETP activity reduces serum HDL levels, whereas persons without CETP activity have high HDL levels. We investigated the association of the TaqIB CETP polymorphism and various parameters of the insulin resistance syndrome in a cross sectional population based study. We included 1029 persons without known cardiovascular disease or diabetes mellitus consecutively enrolled in our SAPHIR program (Salzburg Atherosclerosis Prevention program in persons with a High Infarction Risk). Numerous clinical and laboratory data were accomplished. Insulin sensitivity was measured by a short insulin tolerance test. The TaqIB CETP polymorphism was determined by PCR, TaqI restriction and electrophoresis. 35.2% were homozygous for the prevalence (B1B1), 46.7% were heterozygous (B1B2), and 18.1% homozygous for the absence (B2B2) of the restriction site. HDL cholesterol and apolipoprotein A1 were lower and small dense low-density lipoproteins (sdLDL) higher in B1B1 compared to B2B1 and B2B2 persons. In women, we found a significant interaction effect between CETP genotype and adiposity for HDL cholesterol. B1B1 women with a BMI and a waist circumference above the median had 9.7 mg/dl lower HDL than B1B2 and 9.1 mg/dl lower HDL than B2B2 women (P < 0.001). In men, no interaction effect but a marked genotype to HDL correlation was found. There was a high CETP effect on sdLDL detected in men (P = 0.001). B1B1 men had sdLDL in 36%, B1B2 in 24.6%, and B2B2 in only 14.5%. Men with adiposity and insulin resistance had twice as many sdLDL as insulin sensitive men. We found a significant sex specific effect of the TaqIB CETP polymorphism on the insulin resistance parameters HDL-cholesterol and sdLDL in an Austrian population based study.


Asunto(s)
Proteínas Portadoras/genética , Glicoproteínas/genética , Síndrome Metabólico/genética , Polimorfismo Genético/genética , Polimerasa Taq/genética , Adulto , Anciano , Austria , Distribución de Chi-Cuadrado , Proteínas de Transferencia de Ésteres de Colesterol , Estudios de Cohortes , Femenino , Humanos , Modelos Lineales , Masculino , Síndrome Metabólico/sangre , Persona de Mediana Edad , Análisis Multivariante
19.
J Neuroimaging ; 10(4): 195-9, 2000 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11147396

RESUMEN

Conventional transcranial color-coded real-time sonography of the vertebrobasilar system is limited by imaging problems of the distal segment of the basilar artery. Lung-stable contrast-enhancing agents may overcome this problem by enhancing the quality of Doppler signals by as much as 20%. Fourty-two patients underwent sonographic evaluation of the vertebrobasilar system before and after receiving intravenously administered galactose-based contrast-enhancing agent Levovist by transforaminal and transtemporal routes. Imaging quality was classified into five categories depending on the length of visible color-flow by transforaminal approach: 1--no signal, 2--1-9.9 mm, 3--10-19.9 mm, 4--20-29.9 mm, 5--> or = 30 mm. For transtemporal insonation, imaging quality was classified either as no color flow or sufficient color flow of the basilar tip. By unenhanced investigation, average signal length of color flow was 16 +/- 8 mm for transforaminal investigation; application of Levovist improved this value to 26.6 +/- 6 mm. For unenhanced transforminal approach, 4.8% were assigned to category 1, 11.9% to category 2, 54.8% to category 3, 23.8% to category 4 and 4.8% to category 5. After signal enhancement with Levovist, category 1 covered 0%, category 2 2.4%, category 3 7.14%, category 4 59.5% and category 5 30.9% (p < 0.001). Unenhanced transtemporal approach allowed identification of the basilar tip in 78.6% with an average length of 6.3 +/- 2 mm; contrast enhancement improved this values to 92.9% and 8.3 +/- 3.3 mm respectively (p < 0.05). The application of transpulmonary contrast-enhancing agents improves the reliability of transcranial color-coded duplex sonography of the basilar artery.


Asunto(s)
Arteria Basilar/diagnóstico por imagen , Medios de Contraste , Aumento de la Imagen/métodos , Ultrasonografía Doppler en Color , Ultrasonografía Doppler Transcraneal , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Circulación Cerebrovascular/fisiología , Medios de Contraste/administración & dosificación , Femenino , Humanos , Inyecciones Intravenosas , Masculino , Persona de Mediana Edad , Hueso Occipital , Polisacáridos/administración & dosificación , Reproducibilidad de los Resultados , Hueso Temporal , Arteria Vertebral/diagnóstico por imagen
20.
J Neuroimaging ; 7(1): 50-4, 1997 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-9038434

RESUMEN

A 61-year-old woman had Creutzfeldt-Jakob disease, type Heidenhain, that progressed for 4 months until death, 3 of which she spent in a hospital. The diagnosis was verified by autopsy. Consecutive brain computed tomography, magnetic resonance imaging, blood flow measurements, electroencephalography (EEG), and routine laboratory tests were performed. All imaging techniques showed nonspecific pathological changes, whereas EEG revealed alterations indicative for Creutzfeldt-Jakob disease.


Asunto(s)
Síndrome de Creutzfeldt-Jakob/diagnóstico , Imagen por Resonancia Magnética , Tomografía Computarizada de Emisión de Fotón Único , Tomografía Computarizada por Rayos X , Encéfalo/patología , Síndrome de Creutzfeldt-Jakob/patología , Diagnóstico Diferencial , Electroencefalografía , Femenino , Humanos , Persona de Mediana Edad , Priones/análisis
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA