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BACKGROUND: Physical activity guidelines for adults with disability, chronic conditions, and pregnancy (i.e., specific populations) have been developed to provide guidance for engaging in physical activity. However, specific populations remain considerably less physically active compared to the general population, presenting a knowledge-practice gap. PURPOSE: The purpose of this systematic scoping review was to identify and evaluate strategies for disseminating and implementing physical activity guidelines among specific populations and/or stakeholders (e.g., healthcare professionals) in Canada. METHODS: Five search approaches (peer-reviewed literature databases, grey literature database, custom Google search engines, targeted web-based searches, and content expert consultation) identified records documenting and/or evaluating strategies that had been used to disseminate or implement guidelines from a predetermined list. Systematic and scoping review protocols were followed. Risk of bias assessments were conducted for all studies that evaluated strategies. RESULTS: Eighty-one records reported dissemination strategies (n = 42), implementation strategies (n = 28), or both (n = 11). Twenty-two studies reporting on 29 evaluated strategies were deemed "serious" or "high" risk of bias. Common guideline dissemination and implementation strategies are deliberated and recommendations for future practice are made. CONCLUSIONS: Findings may inform future dissemination and implementation efforts for physical activity guidelines in Canada or similar countries.
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Personas con Discapacidad , Ejercicio Físico , Adulto , Canadá , Enfermedad Crónica , Femenino , Humanos , Conocimiento , EmbarazoRESUMEN
BACKGROUND: A subset of patients with phenylketonuria benefit from treatment with tetrahydrobiopterin (BH4), although there is no consensus on the definition of BH4 responsiveness. The aim of this study therefore was to gain insight into the definitions of long-term BH4 responsiveness being used around the world. METHODS: We performed a web-based survey targeting healthcare professionals involved in the treatment of PKU patients. Data were analysed according to geographical region (Europe, USA/Canada, other). RESULTS: We analysed 166 responses. Long-term BH4 responsiveness was commonly defined using natural protein tolerance (95.6%), improvement of metabolic control (73.5%) and increase in quality of life (48.2%). When a specific value for a reduction in phenylalanine concentrations was reported (n = 89), 30% and 20% were most frequently used as cut-off values (76% and 19% of respondents, respectively). When a specific relative increase in natural protein tolerance was used to define long-term BH4 responsiveness (n = 71), respondents most commonly reported cut-off values of 30% and 100% (28% of respondents in both cases). Respondents from USA/Canada (n = 50) generally used less strict cut-off values compared to Europe (n = 96). Furthermore, respondents working within the same center answered differently. CONCLUSION: The results of this study suggest a very heterogeneous situation on the topic of defining long-term BH4 responsiveness, not only at a worldwide level but also within centers. Developing a strong evidence- and consensus-based definition would improve the quality of BH4 treatment.
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Biopterinas/análogos & derivados , Fenilalanina/genética , Fenilcetonurias/tratamiento farmacológico , Biopterinas/efectos adversos , Biopterinas/uso terapéutico , Canadá/epidemiología , Europa (Continente)/epidemiología , Humanos , Fenilalanina/sangre , Fenilalanina Hidroxilasa/genética , Fenilcetonurias/sangre , Fenilcetonurias/epidemiología , Fenilcetonurias/patología , Estados Unidos/epidemiologíaRESUMEN
OBJECTIVES: To evaluate the relation between climacteric symptoms or other risk factors for cardiovascular disease and oxidative status of postmenopausal women. METHODS: Cross-sectional investigation performed at the outpatient service for the menopause at the University Hospital, on 50 apparently healthy women in physiological postmenopause. The whole-blood free oxygen radical test (FORT), free oxygen radical defence (FORD), age, months since menopause, weight, body mass index, waist circumference, waist-to-hip ratio, estradiol, lipids, glucose, insulin, insulin resistance (glucose/insulin and HOMA-IR), and fibrinogen were evaluated. The Greene Climacteric Scale with its subscales was used to evaluate climacteric symptoms. The pulsatility index, an index of downstream blood flow resistance, was determined for both the internal carotid artery and the brachial artery. RESULTS: The waist-to-hip ratio (r = 0.540; p = 0.0001), estradiol (r = 0.548; p = 0.0004) and waist circumference (r = 0.345; p = 0.02) were independently related to blood FORT. The score in the Greene vasomotor subscale was the only parameter independently related to blood FORD (r = 0.554; p = 0.0001). FORT was not related to the artery pulsatility index, while FORD was negatively related to the pulsatility index of both the internal carotid (r = 0.549; p = 0.0001) and the brachial (r = 0.484; p = 0.0001) arteries. DISCUSSION: In postmenopausal women, abdominal adiposity and hypoestrogenism increase oxidative stress. Climacteric symptoms, particularly vasomotor symptoms, markedly reduce antioxidant defences. Lower antioxidant defences are associated with higher resistance to blood flow in the great arteries. In women early after the menopause, visceral fat, hypoestrogenism and climacteric symptoms may increase the risk for cardiovascular disease.
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Estrés Oxidativo , Posmenopausia/fisiología , Adulto , Anciano , Biomarcadores/sangre , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/fisiopatología , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Posmenopausia/sangre , Posmenopausia/psicología , Flujo Pulsátil , Factores de RiesgoRESUMEN
Allele frequencies for 26 short tandem repeats (STRs) were obtained from a sample of 203 unrelated individuals living in the area of Florence, Prato and Pistoia (Tuscany, Central Italy). These 26 loci are in addition to the existing 13 U.S. core loci and can help provide assistance in complex kinship testing when, for example, the alleged father is not available for testing. The results were compared with U.S. Caucasian, African American and Hispanic populations.
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Frecuencia de los Genes , Genética de Población , Repeticiones de Microsatélite , Dermatoglifia del ADN , Humanos , Italia , Reacción en Cadena de la Polimerasa Multiplex , Grupos Raciales/genética , Estados UnidosRESUMEN
BACKGROUND: We studied the genetic fingerprints of ovarian cancer and validated the potential of Mammaglobin b (SCGB2A1), one of the top differentially expressed genes found in our analysis, as a novel ovarian tumour rejection antigen. METHODS: We profiled 70 ovarian carcinomas including 24 serous (OSPC), 15 clear-cell (CC), 24 endometrioid (EAC) and 7 poorly differentiated tumours, and 14 normal human ovarian surface epithelial (HOSE) control cell lines using the Human HG-U133 Plus 2.0 chip (Affymetrix). Quantitative real-time PCR and immunohistochemistry staining techniques were used to validate microarray data at RNA and protein levels for SCGB2A1. Full-length human-recombinant SCGB2A1 was used to pulse monocyte-derived dendritic cells (DCs) to stimulate autologous SCGB2A1-specific cytotoxic T-lymphocyte (CTL) responses against chemo-naive and chemo-resistant autologous ovarian tumours. RESULTS: Gene expression profiling identified SCGB2A1 as a top differentially expressed gene in all histological ovarian cancer types tested. The CD8+ CTL populations generated against SCGB2A1 were able to consistently induce lysis of autologous primary (chemo-naive) and metastatic/recurrent (chemo-resistant) target tumour cells expressing SCGB2A1, whereas autologous HLA-identical noncancerous cells were not lysed. Cytotoxicity against autologous tumour cells was significantly inhibited by anti-HLA-class I (W6/32) monoclonal antibody. Intracellular cytokine expression measured by flow cytometry showed a striking type 1 cytokine profile (i.e., high IFN-γ secretion) in SCGB2A1-specific CTLs. CONCLUSION: SCGB2A1 is a top differentially expressed gene in all major histological types of ovarian cancers and may represent a novel and attractive target for the immunotherapy of patients harbouring recurrent disease resistant to chemotherapy.
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Antígenos de Neoplasias/metabolismo , Biomarcadores de Tumor/metabolismo , Mamoglobina B/metabolismo , Neoplasias Ováricas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Antígenos de Neoplasias/genética , Biomarcadores de Tumor/genética , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Inmunoterapia , Mamoglobina B/genética , Análisis por Micromatrices , Persona de Mediana Edad , Neoplasias Ováricas/patología , Neoplasias Ováricas/terapia , Transcriptoma , Estudios de Validación como AsuntoRESUMEN
BACKGROUND: Lichen sclerosus is a chronic relapsing inflammatory dermatosis with a predilection for anogenital skin in 85%-98% of cases and is more prevalent in women (3%) than in men (> 0.07%). OBJECTIVES: The purpose of this study was to investigate gender differences in clinical presentation and therapeutic response to treatment with platelet-rich plasma (PRP), an emerging innovative strategy for LS. METHODS: Forty-three male and 51 female patients affected by LS were evaluated. Each patient was subjected to PRP treatment (1 infiltration every 15 days, for 3 times). RESULTS: The PRP procedure was well tolerated by all patients and an overall significant decrease in symptoms was reported 6 months after PRP infiltration. Reduction in pain and burning sensation was significant in both gender but more accentuated in women than in men, whereas reduction of itching was similar. On the contrary, dyspareunia evidenced sex-related difference since a significant diminution was observed only in male. CONCLUSIONS: This study demonstrates that PRP based therapy may exert a relevant role in LS patient management due to its effect on Quality of Life (QoL) and sexual function in both gender. In addition, the study underlined gender-related differences in severity of symptoms and disease age onset.
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Liquen Escleroso y Atrófico , Plasma Rico en Plaquetas , Liquen Escleroso Vulvar , Enfermedad Crónica , Femenino , Genitales , Humanos , Liquen Escleroso y Atrófico/diagnóstico , Liquen Escleroso y Atrófico/terapia , Masculino , Calidad de Vida , Factores Sexuales , Liquen Escleroso Vulvar/tratamiento farmacológicoRESUMEN
BACKGROUND: To date, no good marker for screening or disease monitoring of endometrial cancer (EC) is available. The aims of this study were to investigate HE4 gene, protein expression and serum HE4 (sHE4) levels in a panel of ECs and normal endometria (NEs) and to correlate sHE4 with patient clinicopathological characteristics and prognosis. METHODS: Using quantitative real-time PCR we tested 46 ECs and 20 NEs for HE4 gene expression. Protein expression was analysed by immunohistochemistry on tissue microarrays in 153 ECs and 33 NEs. Pre-operative serum samples from 138 EC and 76 NE patients were analysed with HE4-EIA assay. Association between sHE4 and patient clinicopathological characteristics or outcome was evaluated. RESULTS: Protein and HE4 gene were significantly upregulated in EC tissues and sera, compared with controls. High sHE4 levels were significantly associated with worse EC clinical characteristics. By univariate survival analysis, high sHE4 levels significantly correlated with decreased overall survival, progression-free survival and disease-free survival, retaining their independent prognostic value on the poorly differentiated EC cohort. CONCLUSION: We demonstrate, for the first time, that high sHE4 levels correlates with an aggressive EC phenotype and may constitute an independent prognostic factor for poorly differentiated-ECs. Determination of sHE4 could be clinically useful in identifying high-risk EC patients for a more aggressive adjuvant therapy.
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Biomarcadores de Tumor/metabolismo , Neoplasias Endometriales/sangre , Neoplasias Endometriales/diagnóstico , Endometrio/metabolismo , Proteínas Secretorias del Epidídimo/metabolismo , Adulto , Anciano , Análisis de Varianza , Biomarcadores de Tumor/sangre , Biomarcadores de Tumor/genética , Antígeno Ca-125/metabolismo , Estudios de Casos y Controles , Diagnóstico Diferencial , Supervivencia sin Enfermedad , Neoplasias Endometriales/metabolismo , Neoplasias Endometriales/cirugía , Ensayo de Inmunoadsorción Enzimática , Proteínas Secretorias del Epidídimo/genética , Proteínas Secretorias del Epidídimo/inmunología , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Inmunohistoquímica , Estimación de Kaplan-Meier , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa , Valor Predictivo de las Pruebas , Periodo Preoperatorio , Pronóstico , Análisis por Matrices de Proteínas , ARN Mensajero/metabolismo , beta-DefensinasRESUMEN
The World Health Organization (WHO) recommends that pneumococcal conjugate vaccines (PCVs) be included in immunization programs worldwide. In China, the 7-valent pneumococcal conjugate vaccine (PREVNAR 7®) was authorized in 2008 but was not included in the national immunization programs. In 2016, PREVNAR 13®, a 13-valent pneumococcal conjugate vaccine (PCV13), was licensed for optional use in China. We will conduct a scoping review of the distribution of serotypes and antimicrobial resistance of Streptococcus pneumoniae in children aged under 5 years in China since the introduction of PCV13. We will obtain data from PubMed, the China National Knowledge Infrastructure (CNKI), and Wanfang Med Online. We will also review epidemiological data from WHO and the China Antimicrobial Surveillance Network (CHINET). Our analysis will include the condition of interest, the intervention, and the geographical region. All types of studies will be eligible for inclusion in the study database if they meet the inclusion criteria. This scoping review is intended to outline how S. pneumoniae serotypes are distributed, and it will map their antimicrobial resistance in children aged under 5 years in China. The results of this study will provide useful information on the impact of PCV13 in China.
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Antiinfecciosos , Farmacorresistencia Bacteriana , Infecciones Neumocócicas/microbiología , Antibacterianos , Preescolar , China/epidemiología , Humanos , Lactante , Infecciones Neumocócicas/epidemiología , Infecciones Neumocócicas/prevención & control , Vacunas Neumococicas/administración & dosificación , Proyectos de Investigación , Literatura de Revisión como Asunto , Serogrupo , Streptococcus pneumoniae/clasificación , Streptococcus pneumoniae/efectos de los fármacosRESUMEN
An amendment to this paper has been published and can be accessed via the original article.
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BACKGROUND: Phenylketonuria (PKU) is an autosomal recessive inborn error of phenylalanine metabolism caused by deficiency in the enzyme phenylalanine hydroxylase that converts phenylalanine into tyrosine. MAIN BODY: In 2017 the first European PKU Guidelines were published. These guidelines contained evidence based and/or expert opinion recommendations regarding diagnosis, treatment and care for patients with PKU of all ages. This manuscript is a supplement containing the practical application of the dietary treatment. CONCLUSION: This handbook can support dietitians, nutritionists and physicians in starting, adjusting and maintaining dietary treatment.
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Fenilalanina Hidroxilasa , Fenilcetonurias , Dieta , Humanos , Fenilalanina , TirosinaRESUMEN
This study identifies the genetic fingerprint of poorly differentiated endometrioid endometrial carcinomas (G3-EEC) and analyses the potential utility of trefoil factor 3 (TFF3) as novel serum marker in G3-EEC. Affymetrix microarrays were used to identify the gene expression patterns of 19 snap-frozen G3-EEC and 15 normal endometrium (NE) biopsies. Quantitative real-time PCR (qRT-PCR) and immunohistochemistry were used to validate TFF3 expression. Finally, TFF3 serum levels were determined by ELISA in 25 G3-EEC patients, 42 healthy controls, and in 13 endometrial hyperplasia patients. Hierarchical cluster analysis showed TFF3 as the top differentially expressed gene between 363 upregulated genes in G3-EEC, when compared with NE. Trefoil factor 3 gene expression levels analysed by qRT-PCR significantly correlated with Affymetrix results (P<0.001; rs=0.85). By immunohistochemistry, TFF3 protein was significatively more expressed in EEC compared with NE (P<0.01), with cytoplasmatic positivity in 79% G3-EEC and 18% NE. Patients harbouring G3-EECs had significantly higher TFF3 serum concentration by ELISA when compared with healthy patients (P<0.001) or patients harbouring endometrial hyperplasia (P=0.012). In conclusion, TFF3 is highly expressed at gene and protein level in G3-EEC. Further investigations on a wider set of samples are warranted to validate TFF3 as a novel serum marker for early detection and/or monitoring of G3-EEC patients.
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Biomarcadores de Tumor/sangre , Neoplasias Endometriales/diagnóstico , Perfilación de la Expresión Génica , Péptidos/sangre , Biomarcadores de Tumor/genética , Antígeno Ca-125/sangre , Análisis por Conglomerados , Neoplasias Endometriales/sangre , Neoplasias Endometriales/genética , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Inmunohistoquímica , Péptidos/genética , Factor Trefoil-3RESUMEN
Severe pain syndromes may be recorded during all phases of haematopoietic stem cell transplantation (HSCT) for haematological malignancies: from stem cell mobilization to the long-term post transplant period. Although the major cause of pain in the setting of HSCT is injury to mucosal tissues induced by the conditioning regimen, pain from several other causes has been reported. In this paper, we review pain and its management in the setting of HSCT.
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Neoplasias Hematológicas/terapia , Movilización de Célula Madre Hematopoyética/efectos adversos , Trasplante de Células Madre Hematopoyéticas , Manejo del Dolor , Acondicionamiento Pretrasplante/efectos adversos , Humanos , Dolor/etiología , Síndrome , Factores de Tiempo , Trasplante Autólogo , Trasplante HomólogoRESUMEN
Salmonella enterica serovar Typhimurium (S. Typhimurium) is a common cause of non-typhoideal salmonellosis in humans and animals; since the end of '90 a monophasic serovar defined by the antigenic formula 4,5:i:- has been emerged. This study shows occurrence of monophasic serovar in Italy (Lombardia Region) and analyses antimicrobial resistance of 147 S. Typhimurium and 45 monophasic strains. Multiple drug resistance (MDR) has been detected in 94,5% and 76,6% of 55 porcine and 137 human isolates, respectively; tetra-resistance pattern AmSSuTe is the most common among in both sources (55 out of 116 strains of MDR S. Typhimurium and 16 out of 41 strains of MDR monophasic variant). Transfer of resistance determinants has been investigated by plasmid conjugation for all the 157MDR strains: only 16 isolates (10,2%) gave positive results, and transfer has almost been partial. Data from our investigation and data reported by other studies show a wide difference in the circulating phenotypes and in polymorphism of S. Typhimurium, confirmed also by the emergence of the monophasic serovar.
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Salmonella typhimurium/clasificación , Salmonella typhimurium/efectos de los fármacos , Animales , Farmacorresistencia Bacteriana , Humanos , Pruebas de Sensibilidad Microbiana , Salmonella typhimurium/aislamiento & purificación , Porcinos/microbiologíaRESUMEN
This paper reported on a series of 49 elderly patients over 60 years of age affected by acute lymphoblastic leukemia (ALL), observed at our institution from 1969 to 1993. The biological characteristics considered, median WBC count, FAB classification, immunophenotype at onset of disease, were no different from those of our adult ALL series. Overall complete remission (CR) rate of these patients was 59%, 18% had resistant disease and 23% died during induction. Overall median survival was 9 months and overall median duration of CR was 7 months. All patients were divided according to treatment into two groups: group A (13 patients) received an intensive treatment including vincristine (VCR), prednisone (PDN), daunorubicin (DNR) and L-asparaginase (L-Asp), while in group B (36 patients) were included patients who received mild conventional induction with VCR and PDN. In group A, 77% of patients achieved CR and 23% died during induction. All patients were hospitalized during induction treatment. During follow-up, among 10 CRs, five (50%) died in CR because of hemorrhage (two), infections (two) and myocardial infarction (one); five (50%) relapsed. Median survival was 4 months and median duration of CR was 3.5 months. In group B, 53% of patients obtained CR, 25% had resistant disease and 22% died during induction. During induction, 44% of patients were hospitalized. During follow-up, among 19 CRs, 14 (74%) relapsed and three (15%) died in CR because of infection (two) and cardiorespiratory failure (one). Three patients (15%) are still alive: two in first CR and one in second CR. No statistical differences between the two groups in terms of CR rate or survival were noted. Standardized therapeutic trials are needed better to evaluate results in these patients, considering also the introduction of new therapeutic agents or supportive treatments, such as growth factors.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Asparaginasa/administración & dosificación , Daunorrubicina/administración & dosificación , Femenino , Humanos , Masculino , Metotrexato/administración & dosificación , Persona de Mediana Edad , Prednisona/administración & dosificación , Inducción de Remisión , Estudios Retrospectivos , Resultado del Tratamiento , Vincristina/administración & dosificaciónRESUMEN
A home care service has been implemented at our center with the aim of offering domiciliary assistance to patients with hematologic malignancies in advanced phase. We report our experience concerning the home management of these patients in the setting of infective complications. Of 151 patients in home care, 70 (46%) developed a total of 109 febrile episodes, performance status and neutrophil count significantly affecting the incidence of infections. Fever was of unknown origin in 51% of cases and microbiologically and clinically documented infections accounted for 26 and 23% of the cases, respectively. Oral ciprofloxacin in patients not neutropenic and intravenous ceftriaxone plus amikacin in neutropenic patients was shown to be effective and suitable for empiric home antibacterial treatment; in fact, 65% of febrile episodes responded to the initial antibacterial therapy with a further 16% after modification. Overall, 19.3% of the infective episodes were fatal, the prognosis appearing to be similar to that usually observed in the same category of patients in an inpatient setting. Our experience appears to show that a home care program could be the option of choice for patients with advanced cancer even in the setting of infective complications. It could improve the quality of life of patients and of their families, and it could save these subjects the risk of developing infections by resistant nosocomial isolates.
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Antibacterianos/uso terapéutico , Neoplasias Hematológicas/complicaciones , Servicios de Atención de Salud a Domicilio , Infecciones/tratamiento farmacológico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Estudios de Factibilidad , Femenino , Fiebre/tratamiento farmacológico , Fiebre/mortalidad , Neoplasias Hematológicas/terapia , Humanos , Infecciones/epidemiología , Infecciones/microbiología , Infecciones/mortalidad , Masculino , Persona de Mediana Edad , Cuidados Paliativos , PronósticoRESUMEN
This article examines the long-term memory of a patient, AB, who had previously been reported to have problems in the short-term retention of word meanings. The authors found that AB had a problem not only in the short-term but also in the long-term retention of lexical-semantic information. AB, however, had no problem in the long-term retention of other kinds of information (pictures, shapes, propositional information). This pattern of results was interpreted as evidence that lexical-semantic representations have their own specific memory resources that are involved in the retention of the corresponding representations across different time intervals (e.g., they are involved in short-term as well as long-term retention). Implications for models of memory are discussed.
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Memoria a Corto Plazo , Retención en Psicología , Semántica , Adulto , Anciano , Amnesia/psicología , Daño Encefálico Crónico/psicología , Femenino , Humanos , Aprendizaje , Masculino , Memoria , Recuerdo Mental , Persona de Mediana Edad , Modelos Psicológicos , Psicolingüística , Percepción del HablaRESUMEN
In HCL patients some cases of familial occurrence of the disease were reported, without an association with a specific haplotype or HLA antigen. In a series of a non familial HCL patients an increase in DR11 frequency was reported. We performed HLA class I and class II antigens in a series of 38 consecutive HCL patients. An increased frequency of B17 (10/38-27%) and DR11 (22/38-57%) antigens compared with the normal Caucasian population was recorded. As clinical characteristics, no significant differences were recognized between DR11 positive and DR11 negative patients. In response to IFN treatment, a complete response (CR) was achieved in 20% of DR11 patients and in 46% of DR11 negative patients. In this study an increase frequency of B17 and DR11 antigens was found; furthermore DR11 positive patients seem to be less responsive to IFN treatment but a larger series of patients will have to be studied in the future in order to establish this observation with more certainty.
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Antígenos HLA/análisis , Prueba de Histocompatibilidad , Leucemia de Células Pilosas/inmunología , Adulto , Anciano , Femenino , Antígenos HLA/genética , Antígenos HLA-B/análisis , Antígenos HLA-B/genética , Antígenos HLA-DR/análisis , Antígenos HLA-DR/genética , Subtipos Serológicos HLA-DR , Humanos , Leucemia de Células Pilosas/genética , Masculino , Persona de Mediana EdadRESUMEN
The Sonority Dispersion Principle (Clements, 1990) states that the sharper the rise in sonority between the beginning of the syllable and the nucleus, the better the syllable. So far evidence in favour of this principle has been derived mainly from the distributional properties of syllable types and, to a lesser extent, from language acquisition. The case of DB, presented in this study, provides strong evidence that the Sonority Dispersion Principle also applies to an explanation of aphasic errors and revives Jakobson's idea that the same principles of complexity can explain the distribution of syllables, language acquisition, and language loss (Jakobson, 1941, 1968). Although some evidence that sonority constraints aphasic errors has been presented before, this is the first study reporting systematic effects of sonority-based complexity in aphasia.
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Afasia de Broca/diagnóstico , Adulto , Humanos , Masculino , Fonética , Lectura , EscrituraRESUMEN
We describe the patterns of omissions (and substitutions) of freestanding grammatical morphemes and the patterns of substitutions of bound grammatical morphemes in 20 so-called agrammatic patients. Extreme variation was observed in the patterns of omissions and substitutions of grammatical morphemes, both in terms of the distribution of errors for different grammatical morphemes as well as in terms of the distribution of omissions versus substitutions. Results are discussed in the context of current debates concerning the possibility of a theoretically motivated distinction between the clinical categories of agrammatism and paragrammatism and, more generally, concerning the theoretical usefulness of any clinical category. The conclusion is reached that the observed heterogeneity in the production of grammatical morphemes among putatively agrammatic patients renders the clinical category of agrammatism, and by extension all other clinical categories from the classical classification scheme (e.g., Broca's aphasia, Wernicke's aphasia, and so forth) to more recent classificatory attempts (e.g., surface dyslexia, deep dysgraphia, and so forth), theoretically useless.