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1.
J Aging Res ; 2015: 312931, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26346975

RESUMO

The quality of the built environment can impact the quality of life and the sense of home of nursing home residents. This study investigated (1) which factors in the physical and social environment correlate with the sense of home of the residents and (2) which environmental factors are most meaningful. Twelve participants engaged in a qualitative study, in which photography was as a supportive tool for subsequent interviews. The data were analysed based on the six phases by Braun and Clarke. The four themes identified are (1) the physical view; (2) mobility and accessibility; (3) space, place, and personal belongings; and (4) the social environment and activities. A holistic understanding of which features of the built environment are appreciated by the residents can lead to the design and retrofitting of nursing homes that are more in line with personal wishes.

2.
Dermatology ; 223(1): 13-9, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21876338

RESUMO

BACKGROUND: Non-infective cutaneous granulomas with unknown pathogenesis occur in various primary immunodeficiencies (PIDs) including ataxia telangiectasia (A-T). OBJECTIVE: To find a common immunological denominator in these cutaneous granulomas. METHODS: The dermatological and immunological features of 4 patients with A-T and cutaneous granulomas were described. The literature on skin granulomas in A-T and in other PIDs is reviewed. RESULTS: All 4 A-T patients had progressive granulomas on their limbs and showed decreased IgG and IgA concentrations with normal IgM levels. They had a marked decrease in B cells and naïve T cells coinciding with the appearance of the cutaneous granulomas. Similar B- and T-cell abnormalities were described in patients with other PIDs with skin granulomas. CONCLUSIONS: We hypothesize that the pathogenesis of these skin granulomas is related to immune dysregulation of macrophages due to the absence of naïve T cells with an appropriate T-cell receptor repertoire and the unopposed activity of γδ T cells and/or natural killer cells.


Assuntos
Ataxia Telangiectasia/imunologia , Granuloma/imunologia , Dermatopatias/imunologia , Ataxia Telangiectasia/complicações , Linfócitos B/imunologia , Criança , Pré-Escolar , Feminino , Granuloma/complicações , Humanos , Imunoglobulina A/metabolismo , Imunoglobulina G/metabolismo , Síndromes de Imunodeficiência/complicações , Síndromes de Imunodeficiência/imunologia , Lactente , Dermatoses da Perna/imunologia , Masculino , Dermatopatias/complicações , Linfócitos T/imunologia
3.
Br J Cancer ; 105(4): 586-91, 2011 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-21792198

RESUMO

BACKGROUND: Immunodeficiency in ataxia telangiectasia (A-T) is less severe in patients expressing some mutant or normal ATM kinase activity. We, therefore, determined whether expression of residual ATM kinase activity also protected against tumour development in A-T. METHODS: From a total of 296 consecutive genetically confirmed A-T patients from the British Isles and the Netherlands, we identified 66 patients who developed a malignant tumour; 47 lymphoid tumours and 19 non-lymphoid tumours were diagnosed. We determined their ATM mutations, and whether cells from these patients expressed any ATM with residual ATM kinase activity. RESULTS: In childhood, total absence of ATM kinase activity was associated, almost exclusively, with development of lymphoid tumours. There was an overwhelming preponderance of tumours in patients <16 years without kinase activity compared with those with some residual activity, consistent with a substantial protective effect of residual ATM kinase activity against tumour development in childhood. In addition, the presence of eight breast cancers in A-T patients, a 30-fold increased risk, establishes breast cancer as part of the A-T phenotype. CONCLUSION: Overall, a spectrum of tumour types is associated with A-T, consistent with involvement of ATM in different mechanisms of tumour formation. Tumour type was influenced by ATM allelic heterogeneity, residual ATM kinase activity and age.


Assuntos
Ataxia Telangiectasia/genética , Proteínas de Ciclo Celular/genética , Proteínas de Ligação a DNA/genética , Mutação , Neoplasias/enzimologia , Neoplasias/prevenção & controle , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Supressoras de Tumor/genética , Adolescente , Adulto , Ataxia Telangiectasia/enzimologia , Proteínas Mutadas de Ataxia Telangiectasia , Neoplasias Encefálicas/enzimologia , Neoplasias Encefálicas/prevenção & controle , Neoplasias da Mama/enzimologia , Neoplasias da Mama/prevenção & controle , Criança , Feminino , Humanos , Immunoblotting , Estimativa de Kaplan-Meier , Linfoma/enzimologia , Linfoma/prevenção & controle , Masculino , Países Baixos , Proteínas Serina-Treonina Quinases/genética , Reino Unido , Adulto Jovem
4.
Neurology ; 73(6): 430-7, 2009 Aug 11.
Artigo em Inglês | MEDLINE | ID: mdl-19535770

RESUMO

OBJECTIVE: To describe the phenotype of adult patients with variant and classic ataxia-telangiectasia (A-T), to raise the degree of clinical suspicion for the diagnosis variant A-T, and to assess a genotype-phenotype relationship for mutations in the ATM gene. METHODS: Retrospective analysis of the clinical characteristics and course of disease in 13 adult patients with variant A-T of 9 families and 6 unrelated adults with classic A-T and mutation analysis of the ATM gene and measurements of ATM protein expression and kinase activity. RESULTS: Patients with variant A-T were only correctly diagnosed in adulthood. They often presented with extrapyramidal symptoms in childhood, whereas cerebellar ataxia appeared later. Four patients with variant A-T developed a malignancy. Patients with classic and variant A-T had elevated serum alpha-fetoprotein levels and chromosome 7/14 rearrangements. The mildest variant A-T phenotype was associated with missense mutations in the ATM gene that resulted in expression of some residual ATM protein with kinase activity. Two splicing mutations, c.331 + 5G>A and c.496 + 5G>A, caused a more severe variant A-T phenotype. The splicing mutation c.331 + 5G>A resulted in less ATM protein and kinase activity than the missense mutations. CONCLUSIONS: Ataxia-telangiectasia (A-T) should be considered in patients with unexplained extrapyramidal symptoms. Early diagnosis is important given the increased risk of malignancies and the higher risk for side effects of subsequent cancer treatment. Measurement of serum alpha-fetoprotein and chromosomal instability precipitates the correct diagnosis. There is a clear genotype-phenotype relation for A-T, since the severity of the phenotype depends on the amount of residual kinase activity as determined by the genotype.


Assuntos
Ataxia Telangiectasia/diagnóstico , Ataxia Telangiectasia/genética , Adulto , Fatores Etários , Feminino , Variação Genética/genética , Humanos , Masculino , Pessoa de Meia-Idade , Mutação/genética , Estudos Retrospectivos , Adulto Jovem
5.
Neuropediatrics ; 38(3): 117-21, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17985259

RESUMO

Thirteen classical ataxia telangiectasia (A-T) patients, varying in age from 1 to 25 years, were studied clinically, electrophysiologically as well as by muscle ultrasound to chart the development and spectrum of neuromuscular abnormalities in A-T. The most prominent finding was a progressive axonal sensorimotor polyneuropathy, apparent by electromyography and muscle ultrasound from the age of 8 years and becoming clinically discernible around 12 years of age. Before the age of 8 years decreased tendon reflexes and slightly slowed sensory nerve conduction velocities could already be observed. With routine electrophysiological techniques the severe polyneuropathy precludes conclusions about the presence of anterior horn cell loss in older patients.


Assuntos
Ataxia Telangiectasia/complicações , Músculo Esquelético/diagnóstico por imagem , Músculo Esquelético/fisiopatologia , Condução Nervosa/fisiologia , Doenças Neuromusculares , Adolescente , Adulto , Criança , Pré-Escolar , Estimulação Elétrica/métodos , Eletromiografia , Feminino , Humanos , Lactente , Masculino , Condução Nervosa/efeitos da radiação , Doenças Neuromusculares/diagnóstico por imagem , Doenças Neuromusculares/etiologia , Doenças Neuromusculares/patologia , Ultrassonografia Doppler/métodos
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