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1.
Autoimmun Rev ; 16(12): 1224-1229, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29037905

RESUMEN

Recently there has been an increase demand for Computer-Aided Diagnosis (CAD) tools to support clinicians in the field of Indirect ImmunoFluorescence (IIF), as the novel digital imaging reading approach can help to overcome the reader subjectivity. Nevertheless, a large multicenter evaluation of the inter-observer reading variability in this field is still missing. This work fills this gap as we evaluated 556 consecutive samples, for a total of 1679 images, collected in three laboratories with IIF expertise using HEp-2 cell substrate (MBL) at 1:80 screening dilution according to conventional procedures. In each laboratory, the images were blindly classified by two experts into three intensity classes: positive, negative, and weak positive. Positive and weak positive ANA-IIF results were categorized by the predominant fluorescence pattern among six main classes. Data were pairwise analyzed and the inter-observer reading variability was measured by Cohen's kappa test, revealing a pairwise agreement little further away than substantial both for fluorescence intensity and for staining pattern recognition (k=0.602 and k=0.627, respectively). We also noticed that the inter-observer reading variability decreases when it is measured with respect to a gold standard classification computed on the basis of labels assigned by the three laboratories. These data show that laboratory agreement improves using digital images and comparing each single human evaluation to potential reference data, suggesting that a solid gold standard is essential to properly make use of CAD systems in routine work lab.


Asunto(s)
Anticuerpos Antinucleares/análisis , Técnica del Anticuerpo Fluorescente Indirecta/métodos , Humanos , Variaciones Dependientes del Observador
2.
Neuroimage Clin ; 13: 370-377, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28123948

RESUMEN

Although several studies have demonstrated that facial-affect recognition impairment is common following moderate-severe traumatic brain injury (TBI), and that there are diffuse alterations in large-scale functional brain networks in TBI populations, little is known about the relationship between the two. Here, in a sample of 26 participants with TBI and 20 healthy comparison participants (HC) we measured facial-affect recognition abilities and resting-state functional connectivity (rs-FC) using fMRI. We then used network-based statistics to examine (A) the presence of rs-FC differences between individuals with TBI and HC within the facial-affect processing network, and (B) the association between inter-individual differences in emotion recognition skills and rs-FC within the facial-affect processing network. We found that participants with TBI showed significantly lower rs-FC in a component comprising homotopic and within-hemisphere, anterior-posterior connections within the facial-affect processing network. In addition, within the TBI group, participants with higher emotion-labeling skills showed stronger rs-FC within a network comprised of intra- and inter-hemispheric bilateral connections. Findings indicate that the ability to successfully recognize facial-affect after TBI is related to rs-FC within components of facial-affective networks, and provide new evidence that further our understanding of the mechanisms underlying emotion recognition impairment in TBI.


Asunto(s)
Lesiones Traumáticas del Encéfalo/fisiopatología , Conectoma/métodos , Emociones/fisiología , Expresión Facial , Reconocimiento Facial/fisiología , Red Nerviosa/fisiopatología , Adulto , Femenino , Humanos , Individualidad , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Red Nerviosa/diagnóstico por imagen
3.
Reumatismo ; 62(4): 259-65, 2010.
Artículo en Italiano | MEDLINE | ID: mdl-21253619

RESUMEN

OBJECTIVES: BAFF and APRIL belong to the tumor necrosis factor (TNF) superfamily and are crucial for the survival, maturation, and differentiation of B cells. Aim of the study is to evaluate BAFF and APRIL in patients affected by Sjögren syndrome (SS) and systemic lupus erythematosus (SLE). METHODS: Sixty patients, (40 SLE, 20 SS) and 20 healthy subjects were enrolled in this study. All subjects were evaluated for laboratory data (ESR, CRP, immunoglobulin G, A and M, complement fragments C3 and C4, LDH, beta2microglobulin, serum levels of rheumatoid factor), autoantibodies (ANA; ENA-SSA, -SSB, -Sm) and lymphocytes subpopulations. For patients, disease activity and damage indexes were assessed with the use of SLEDAI and SLICC and SSDAI and SSDDI for SLE and SS, respectively. BAFF and APRIL were determined by commercial sandwich ELISA kit (R&D Systems, Bender MedSystem). Statistical analysis has been performed with software Prism (Graphpad Instat, version 5.00). RESULTS: APRIL levels were higher among SLE and SS patients compared to controls (p<0.0001, and p0.0001, respectively). BAFF levels in SLE were significantly higher than in SS (p<0.0001). We found higher BAFF levels in SLE and SS compared to controls (p<0.0001). Among SLE patients APRIL correlated with SLEDAI (r 0.3, p 0.04), SLICC (r 0.5,p 0.001), ESR (r 0.3, p 0.005) and CRP (r 0.4, p 0.02). Among SS patients APRIL correlated with SSDAI (r 0.4, p 0.02), SSDDI (r 0.4, p0.01), IgG (r 0.5, p0.01), ESR (r 0.6, p 0.01), CRP (r 0.6, p 0.02) and CD19 B lymphocytes absolute count (r 0.4, p 0.04); BAFF correlated with SSDDI (r 0.7, p 0.004) and CD19 B lymphocytes absolute count (r 0.5, p 0.04). CONCLUSIONS: In this study we showed a correlation between disease activity, damage indexes and BAFF/APRIL levels in SLE and SS patients suggesting a role in the strong activation of the immune system in patients with active disease.


Asunto(s)
Factor Activador de Células B/fisiología , Lupus Eritematoso Sistémico/etiología , Síndrome de Sjögren/etiología , Miembro 13 de la Superfamilia de Ligandos de Factores de Necrosis Tumoral/fisiología , Adulto , Enfermedad Crónica , Femenino , Humanos , Inflamación/etiología , Persona de Mediana Edad
4.
Int J Immunopathol Pharmacol ; 21(3): 659-67, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18831934

RESUMEN

The aim of this study is to evaluate the presence of antibodies to carbonic anhydrase I and/or II (ACAI and ACAII) in patients affected by connective tissue diseases (CTD) and to investigate their association with lung involvement evaluated by High resolution CT scan (HRCT). Ninety-six patients affected by CTD were studied, i.e. 33 rheumatoid arthritis (RA), 8 psoriatic arthritis (PA), 8 ankylosing spondilitis (AS), 23 Systemic Lupus Erythematosus (SLE), 10 Sjogren Syndrome (SS), and 14 Systemic Sclerosis (SSc). ACA were detected by ELISA. The lung involvement was evaluated by means of a previously described HRCT score. According to a receiver operator characteristic curve, patients were divided into those with HRCT score > or = 10 and those with HRCT score < 10, where HRCT score > or = 10 was predictive of interstitial lung disease. ACAI and/or ACAII were detected in 30/96 patients (31.2%) (P < 0.0001 in comparison with controls). In particular, the prevalence of ACAI and/or ACAII was significantly higher in patients with RA (P = 0.002), PA (P < 0.0001), SLE (P = 0.0003) and SSc (P < 0.0001). A positive correlation was found between HRCT scores and CRP or ACAI levels (P = < 0.0001 and P = 0.004, respectively). Thirty-nine of 96 patients (40.6%) showed a HRCT score > or = 10 and both their CRP and ACAI levels were significantly higher when compared with patients showing a HRCT score less than 10 (P < 0.0006 and P = 0.0009, respectively). Moreover, C3 and C4 complement fractions inversely correlated with HRCT scores (P = 0.0004 and P < 0.0001, respectively) and lower values of C3 and C4 complement fractions were found in patients with HRCT score > or = 10 than in those with HRCT score less than 10 (P = 0.014 and P = 0.007, respectively). Due to the lower levels of complement fractions detected in patients with HRCT score > or = 10, a possible immune-complex-mediated pathogenic mechanism of lung involvement could be suggested.


Asunto(s)
Autoanticuerpos/sangre , Anhidrasas Carbónicas/inmunología , Enfermedades del Tejido Conjuntivo/inmunología , Enfermedades Pulmonares/etiología , Adulto , Anciano , Proteína C-Reactiva/análisis , Complemento C3/análisis , Complemento C4/análisis , Enfermedades del Tejido Conjuntivo/complicaciones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Tomografía Computarizada por Rayos X
5.
Eur Rev Med Pharmacol Sci ; 12(4): 267-70, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18727460

RESUMEN

Antinuclear antibodies (ANA) represent the main diagnostic markers for systemic autoimmune disease (AD), although their presence can be detected in blood donors. The aim of this study was to study ANA prevalence in healthy subjects of different racial groups, exposed to the same environmental factors, in order to understand the relevance of genetics or environment in determining autoimmunity. We enrolled in this study 80 healthy Filipinos (Polynesian), migrated to Italy from an average of 15 years, and 60 healthy native Italians (Caucasian) and ANA were detected in their sera (at 1:80 screening dilution) through indirect immunofluorescence assay. We found a higher prevalence of ANA positivity in Filipinos compared to Italians (23.7% vs 8.3%--P = 0.02; OR 3.43; 95% CI 1.2-9.8), above all in females and elderly, although demographic characteristics, clinical history and habits were not significantly different between the two groups. These data confirm that ANA positivity is not a rare condition and healthy non-Caucasians present a higher prevalence of autoantibodies. This could be determined by their autoimmunity-prone immune system or by the exposition to infective agents, pollution, drugs or nutrition of a western country. Future studies to evaluate the ANA prevalence in Filipinos in their own country and the follow-up of positive patients could clarify the real predisposition to AD of this population.


Asunto(s)
Anticuerpos Antinucleares/sangre , Pueblo Asiatico/etnología , Adulto , Anciano , Enfermedades Autoinmunes/diagnóstico , Enfermedades Autoinmunes/inmunología , Biomarcadores/sangre , Emigrantes e Inmigrantes , Femenino , Técnica del Anticuerpo Fluorescente Indirecta , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Filipinas/etnología , Prevalencia
6.
Reumatismo ; 60(1): 50-6, 2008.
Artículo en Italiano | MEDLINE | ID: mdl-18432325

RESUMEN

OBJECTIVE: Aim of this study was to evaluate the prevalence of alexithymia in patients affected by SLE or RA and to investigate the correlation between alexithymia and immunoendocrine parameters (PRL, hGH, IL-6 and TNF-alfa). METHODS: Twenty-five patients (12 and 13 affected by SLE and RA, respectively) were enrolled into the study. The Toronto Alexithymia Scale-20 (TAS-20) was administered. PRL, hGH, IL-6 and TNF-alfa levels were measured by commercially available ELISA kits. RESULTS: Alexithymia prevalence (TAS-20 > or = 51) was 54% in RA and 42% in SLE patients. hGH serum levels were 3.1+/-4.2 and 1.1+/-0.9 IU/ml in SLE and RA, respectively. PRL concentration was 18.4+/-6.5 ng/ml and 14.2+/-4.0 ng/ml in SLE and RA patients, respectively (p=0.03). In RA group, TNF-alpha was 20+/-36.2 whereas in SLE it was 4.9+/-12.8 pg/ml (p=0.03); IL-6 serum concentrations were 24.4+/-25.1 and 2.9+/-5.4 pg/ml, in RA and SLE respectively (p=0.004). The serum level of hGH showed slight increase in alexithymic group (A) compared to non alexithymic group (NA) in both SLE and RA patients. PRL serum levels in SLE-A patients was 26.7+/-17.3 ng/ml while in SLE-NA patients was 12.4+/-3.3 ng/ml (p=0.04). In RA patients increased values of IL-6 and TNF-alpha were present in the A group compared to NA group (IL-6: 35.3+/-28 pg/mL vs 3.5+/-3.9 pg/mL, p=0.01; TNF-alpha: 34.7+/-39 pg/mL vs 3.1+/-3.4 pg/mL, p=0.01). CONCLUSIONS: In this preliminary results we found an high prevalence of alexithymia and a correlation between immunoendocrine parameters and alexhytimic features in SLE and RA, suggesting that an immunomodulatory pathway could influence this cognitive style in patients with autoimmune disorders. Other studies should contribute to find a common biological pathway linking alexithymia and autoimmunity.


Asunto(s)
Síntomas Afectivos/epidemiología , Síntomas Afectivos/etiología , Artritis Reumatoide/complicaciones , Lupus Eritematoso Sistémico/complicaciones , Adulto , Anciano , Anciano de 80 o más Años , Humanos , Persona de Mediana Edad , Prevalencia
7.
Lupus ; 16(1): 56-8, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17283587

RESUMEN

The antiphospholipid syndrome (APS) is an autoimmune disorder, characterized by a wide spectrum of clinical manifestations. Thromboembolic events, with a greater involvement of extremities veins, are the most common features, and obstruction of abdominal vessels are sporadically reported. We present a singular case of a patient with primary APS (PAPS) that developed a spontaneous splenorenal shunt, secondary to a total portal, mesenteric and splenic vein thrombosis. Spontaneous splenorenal shunt, an uncommon circumstance reported in cirrhotic disease, to the best of our knowledge, has not been previously described in PAPS.


Asunto(s)
Síndrome Antifosfolípido/complicaciones , Fístula/etiología , Oclusión Vascular Mesentérica/etiología , Vena Porta/patología , Venas Renales/patología , Vena Esplénica/patología , Trombosis de la Vena/etiología , Femenino , Fístula/diagnóstico por imagen , Predisposición Genética a la Enfermedad , Heterocigoto , Humanos , Metilenotetrahidrofolato Reductasa (NADPH2)/deficiencia , Metilenotetrahidrofolato Reductasa (NADPH2)/genética , Persona de Mediana Edad , Deficiencia de Proteína C/complicaciones , Deficiencia de Proteína S/complicaciones , Venas Renales/diagnóstico por imagen , Vena Esplénica/diagnóstico por imagen , Trombofilia/etiología , Trombofilia/genética , Ultrasonografía Doppler en Color
8.
Reumatismo ; 58(3): 177-86, 2006.
Artículo en Italiano | MEDLINE | ID: mdl-17013433

RESUMEN

Neuropsychiatric involvement in patients with Systemic Lupus Erythematosus (SLE), first mentioned by Kaposi more than 100 years ago, still remains one of the main challenge facing rheumatologist and other physicians. The diagnosis of neuropsychiatric SLE (NPSLE) is complex not only because of the considerable prevalence variation (14-80%) but also because of the wide spectrum of NP manifestations. They vary from overt neurologic alterations (seizure, psychosis), to subtle abnormalities (neurocognitive dysfunctions). Different NP manifestations result from a variety of mechanisms including antibodies, vasculitis, thrombosis, hemorrhages and cytokine-mediated damages. Of note, despite the dramatic clinical manifestations, too often changes at the morphological neuroimaging techniques are minimal and non specific. There is no one diagnostic tool specific for NPSLE and diagnosis must be based on the combinated use of immunoserological tests, functional and anatomical neuroimaging and standardized specific criteria. Symptomatic, immunosuppressive and anticoagulant therapies are the main strategies available in the management of these patients. Therapy for CNS lupus should be adjusted according to the needs of the individual patients. The coming years promise to be an important time for the development of new neuroimaging techniques and for the study of disease mechanism. An early and objective identification of brain involvement will allow for appropriate treatment to avoid severe complications.


Asunto(s)
Vasculitis por Lupus del Sistema Nervioso Central , Ansiolíticos/administración & dosificación , Ansiolíticos/uso terapéutico , Anticuerpos Antifosfolípidos/análisis , Antipsicóticos/administración & dosificación , Antipsicóticos/uso terapéutico , Antirreumáticos/administración & dosificación , Antirreumáticos/uso terapéutico , Ciclofosfamida/administración & dosificación , Ciclofosfamida/uso terapéutico , Diagnóstico Diferencial , Humanos , Inmunosupresores/administración & dosificación , Inmunosupresores/uso terapéutico , Vasculitis por Lupus del Sistema Nervioso Central/diagnóstico , Vasculitis por Lupus del Sistema Nervioso Central/diagnóstico por imagen , Vasculitis por Lupus del Sistema Nervioso Central/tratamiento farmacológico , Vasculitis por Lupus del Sistema Nervioso Central/epidemiología , Vasculitis por Lupus del Sistema Nervioso Central/terapia , Imagen por Resonancia Magnética , Espectroscopía de Resonancia Magnética , Anamnesis , Metotrexato/administración & dosificación , Metotrexato/uso terapéutico , Plasmaféresis , Prevalencia , Sensibilidad y Especificidad , Tomografía Computarizada por Rayos X
9.
Ann Rheum Dis ; 62(10): 1003-5, 2003 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-12972482

RESUMEN

OBJECTIVE: To evaluate the association of IgG and IgM antibodies directed against different negatively charged phospholipids (that is, anticardiolipin (aCL), antiphosphatidylinositol, antiphosphatidylserine, and antiphosphatidic acid) and anti-beta(2)-glycoprotein I (abeta(2)GPI), with Raynaud's phenomenon in patients with systemic lupus erythematosus (SLE). METHODS: Ninety three patients with SLE (81 female), 40 with and 53 without Raynaud's phenomenon, were included in the study. IgG and IgM antiphospholipid antibodies and abeta(2)GPI were determined by enzyme linked immunosorbent assay (ELISA). RESULTS: Fifty patients (54%) were positive for IgG and/or IgM antibodies to one or more phospholipid antigens or to beta(2)GPI. The prevalence of all autoantibodies evaluated, either IgG or IgM, was higher in patients without than in those with Raynaud's phenomenon. A negative association was found between IgG aCL and Raynaud's phenomenon (p=0.038), whereas autoantibodies other than aCL were not significantly associated with Raynaud's phenomenon. CONCLUSION: Our results demonstrate no positive association between antiphospholipid antibodies and Raynaud's phenomenon in SLE and indicate that measurement of anti-negatively charged phospholipid antibodies other than aCL is not useful as a serological marker predictive for Raynaud's phenomenon.


Asunto(s)
Anticuerpos Antifosfolípidos/análisis , Lupus Eritematoso Sistémico/inmunología , Enfermedad de Raynaud/inmunología , Adolescente , Adulto , Anciano , Epítopos , Femenino , Humanos , Inmunoglobulina G/análisis , Inmunoglobulina M/análisis , Lupus Eritematoso Sistémico/complicaciones , Masculino , Persona de Mediana Edad , Enfermedad de Raynaud/complicaciones , Estadísticas no Paramétricas
10.
J Clin Microbiol ; 39(9): 3222-7, 2001 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-11526154

RESUMEN

The new INNO-LiPA Mycobacteria (Innogenetics, Ghent, Belgium), a reverse-hybridization-based line probe assay, and the AccuProbe assay (Gen-Probe Inc., San Diego, Calif.) were applied to MB/BacT Alert 3D (MB/BacT) system (Organon Teknika, Boxtel, The Netherlands) culture bottles and evaluated for mycobacterial identification. From 2,532 respiratory and extrapulmonary specimens submitted for culture, 168 were flagged positive by the MB/BacT system and promptly evaluated for identification (within 24 h). Each of 163 vials grew one mycobacterial isolate, including Mycobacterium tuberculosis complex (n = 73), M. avium complex (n = 3), M. avium (n = 8), M. intracellulare (n = 5), M. kansasii (n = 15), M. gordonae (n = 8), M. malmoense (n = 3), M. chelonae (n = 13), M. abscessus (n = 2), M. xenopi (n = 11), M. scrofulaceum (n = 2), M. fortuitum (n = 7), M. terrae (n = 3), M. simiae (n = 2), M. celatum (n = 3), M. flavescens (n = 1), M. interjectum (n = 1), M. bohemicum (n = 1), and M. pulveris (n = 2). Five cultures yielded mixed growth of two mycobacterial species: M. tuberculosis complex plus M. gordonae (n = 2), M. tuberculosis complex plus M. chelonae (n = 1), M. tuberculosis complex plus M. xenopi (n = 1), and M. avium plus M. chelonae (n = 1). In testing of one-isolate vials, both systems showed excellent sensitivity and specificity for all species and complexes for which they are licensed (nine for INNO-LiPA Mycobacteria versus six for AccuProbe). There were minor discrepancies in results for two isolates identified by INNO-LiPA Mycobacteria as M. avium - M. intracellulare - M. scrofulaceum (MAIS) complex and by AccuProbe as M. intracellulare. In testing of two-isolate vials, INNO-LiPA Mycobacteria correctly identified all isolates, while the AccuProbe assay failed to identify three M. tuberculosis complex isolates and one M. avium isolate. The AccuProbe assay was completed within 2 h, while INNO-LiPA Mycobacteria required a 6-h period. In our opinion, INNO-LiPA Mycobacteria offers the following advantages: (i) it contains a genus-specific probe that, in addition to being used in genus identification, may be used as an internal control for both the amplification and hybridization steps; (ii) it simultaneously identifies M. tuberculosis complex, MAIS complex, and seven other mycobacterial species, even from mixed cultures; (iii) its mycobacterial DNA amplification ensures reliable results independent from the concentration of viable microorganisms; and (iv) it genotypically identifies M. kansasii and M. chelonae. In conclusion, even though INNO-LiPA Mycobacteria is considerably less easy to use than AccuProbe, requiring personnel skilled in molecular biology techniques, it represents an excellent approach for routine identification of frequently encountered mycobacteria.


Asunto(s)
Sondas de ADN , Infecciones por Mycobacterium/diagnóstico , Infecciones por Mycobacterium/microbiología , Mycobacterium/clasificación , Mycobacterium/crecimiento & desarrollo , Medios de Cultivo , Humanos , Mycobacterium/genética , Hibridación de Ácido Nucleico , Juego de Reactivos para Diagnóstico
11.
J Clin Microbiol ; 39(2): 651-7, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11158124

RESUMEN

The MB/BacT ALERT 3D System (MB/BacT) (Organon Teknika, Boxtel, The Netherlands) is a fully automated, nonradiometric system with a revised antibiotic supplement kit designed for the recovery of mycobacteria from clinical specimens. In a multicenter study, the recovery rate of acid-fast bacilli (AFB) and the mean time to their detection from clinical specimens was determined by using the MB/BacT system. Data were compared to those assessed by the radiometric BACTEC 460 system (B460) and by culture on Löwenstein-Jensen (L-J) solid medium. A total of 2,859 respiratory and extrapulmonary specimens were processed by the N-acetyl-L-cysteine (NALC)-NaOH method using two different concentrations of sodium hydroxide; 1.5% was adopted in study design A (1,766 specimens), and 1.0% was used in study design B (1,093 specimens). The contamination rates for MB/BacT were 4.6% (study design A) and 7.1% (study design B). One hundred seventy-nine mycobacterial isolates were detected by study design A, with 148 Mycobacterium tuberculosis complex (MTB) isolates and 31 nontuberculous mycobacteria (NTM) isolates. Overall recovery rates were 78.8% for MB/BacT (P = 0.0049), 64.2% for L-J (P < 0.0001), and 87.1% for B460, whereas they were 84.5, 70.9, and 91.2%, respectively, for MTB alone. A total of 125 mycobacteria were detected by study design B, with 46 MTB and 79 NTM. Overall recovery rates by the individual systems were 57.6% (P = 0.0002), 56.8% (P = 0.0001), and 80% for MB/BacT, L-J, and B460, respectively, whereas the rates were 91.3, 78.3, and 97.8% for MTB alone. By study design A, the mean times to detection of smear-positive MTB, smear-negative MTB, and NTM were 11.5, 19.9, and 19.6 days, respectively, with the MB/BacT; 8.3, 16.8, and 16.6 days, respectively, with the B460; and 20.6, 32.1, and 27.8 days, respectively, with L-J medium. By study design B, the mean times were 15.1, 26.7, and 26 days with the MB/BacT; 11.7, 21.3, and 24.8 days with the B460; and 20.4, 28.7, and 28.4 days with L-J medium. Identification was attempted by probing (Accuprobe) MB/BacT-positive bottles within the first working day following instrument positive flag. Results were compared to those obtained in the B460 positive vials by the p-nitro-alpha-acetylamino-beta-hydroxypropiophenone (NAP) test (study design A) or by the Accuprobe assay (study design B). About 90% of MTB and 100% of NTM could be identified, showing turnaround times closely related to those obtained by combining B460 and the NAP test or the Accuprobe assay. In conclusion, even though recovery rates were shown to be lower than B460, especially for NTM, and contaminants were somewhat higher, MB/BacT represents a valuable alternative to the radiometric system, especially in those laboratories where disposal of radioactive waste is restricted. Finally, when AFB are cultured in nonradiometric liquid media, our data (detection times and bacterial overgrowth rates) suggest that decontamination with 1.5% NaOH may be more suitable than the standard NALC-NaOH.


Asunto(s)
Mycobacterium tuberculosis/clasificación , Mycobacterium/clasificación , Técnicas Bacteriológicas , Medios de Cultivo , Sondas de ADN , Reacciones Falso Negativas , Reacciones Falso Positivas , Humanos , Italia , Mycobacterium/genética , Mycobacterium/aislamiento & purificación , Infecciones por Mycobacterium/diagnóstico , Infecciones por Mycobacterium/microbiología , Mycobacterium tuberculosis/genética , Mycobacterium tuberculosis/aislamiento & purificación , Radiometría , Juego de Reactivos para Diagnóstico , Reproducibilidad de los Resultados , Manejo de Especímenes , Tuberculosis Pulmonar/diagnóstico , Tuberculosis Pulmonar/microbiología
12.
J Clin Microbiol ; 38(4): 1559-62, 2000 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-10747143

RESUMEN

The new Roche COBAS AMPLICOR Mycobacterium tuberculosis Assay was compared to the Gen-Probe enhanced Mycobacterium tuberculosis Amplified Direct Test (AMTDII). A total of 486 specimens (296 respiratory and 190 extrapulmonary) collected from 323 patients were tested in parallel with both assays. Results were compared with those of acid-fast staining and culture, setting the combination of culture and clinical diagnosis as the "gold standard." After resolution of discrepant results, the sensitivity, specificity, and positive and negative predictive values for AMTDII were 85.7, 100, 100, and 90.4% for respiratory specimens and 82.9, 100, 100, and 95. 5% for extrapulmonary specimens, respectively. The corresponding values for AMPLICOR were 94.2, 100, 100, and 96.6% for respiratory specimens and 85, 100, 100, and 96.1% for extrapulmonary specimens, respectively. No significant differences were observed between the results of both assays or, within each one, between respiratory and extrapulmonary specimens. The difference between AMTDII and AMPLICOR sensitivities was related to the presence of inhibitory samples, which the former assay, lacking an internal amplification control (IAC), could not detect. The overall inhibition rate for the AMPLICOR assay was 3.9% (19 specimens). It is concluded that, although both amplification assays proved to be rapid and specific for the detection of M. tuberculosis complex in clinical samples, AMPLICOR, by a completely automated amplification and detection procedure, was shown to be particularly feasible for a routine laboratory setting. Finally, AMTDII is potentially an excellent diagnostic technique for both respiratory and extrapulmonary specimens, provided that an IAC is included with the assay.


Asunto(s)
Mycobacterium tuberculosis/aislamiento & purificación , Técnicas de Amplificación de Ácido Nucleico , Tuberculosis/diagnóstico , Biopsia , Medios de Cultivo , Humanos , Mycobacterium tuberculosis/clasificación , Mycobacterium tuberculosis/genética , Valor Predictivo de las Pruebas , Juego de Reactivos para Diagnóstico , Sistema Respiratorio/microbiología , Sensibilidad y Especificidad , Supuración/microbiología , Tuberculosis/microbiología
14.
Breast Cancer Res Treat ; 54(2): 109-15, 1999 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10424401

RESUMEN

AIM OF THE STUDY: To evaluate the quality of life (QL) in patients with ductal carcinoma in situ of the breast treated with conservative surgery and postoperative irradiation. MATERIAL AND METHODS: A self-completed questionnaire covering many disease-, symptom-, and treatment-specific issues was administered to 106 conservatively treated patients affected by non-infiltrating breast cancer. The questionnaire was based on a series of 34 items assessing five main fields of post-treatment adjustment: physical well being, sexual adaptation, aesthetic outcome, emotional/psychological well being, relational behaviour. Furthermore, the patients were requested to evaluate the degree of information provided by the medical staff concerning surgical procedures and radiation therapy, and to evaluate the effects of the treatment on their social and overall life. RESULTS: The questionnaire was completed by 83 patients (78%), who had a median follow-up of 54.5 months. This final sample had a median age of 50 years (range 29-88) at the time of treatment and 54 years (range 32-94) at the time of study. The patients claimed to be in good physical condition. Data relating to sexual life were provided by 93% of the sample. Some limitations in sexuality, some interference with sexual desire, and some modifications during intercourse were reported by 5, 6, and 5 patients, respectively. The subjective evaluations of the cosmetic results of the therapies were generally good. Only 13 patients (16%) reported the perception of a worsened body image. Forty-six percent of the sample (38 patients) declared that they felt tense, 48% (39 patients) nervous, 29% (38 patients) lonely, 59% (41 patients) anxious, and 41% (34 patients) depressed. Only seven patients (8%) declared that the treatment had had a bad effect on their social life, and 15 (18%) thought that their current life had been affected by the treatment. The amount of information received concerning the disease and treatment (surgery and radiotherapy) was considered sufficient by 79%, 75%, and 79% of the sample, respectively. CONCLUSIONS: This study revealed a good QL in patients treated with breast conservation and postoperative irradiation, with a preserved favourable body image and a lack of negative impact on sexuality. Radiation therapy did not lead to any significant additional problems capable of affecting the QL.


Asunto(s)
Neoplasias de la Mama/psicología , Carcinoma in Situ/psicología , Carcinoma Intraductal no Infiltrante/psicología , Calidad de Vida , Adulto , Anciano , Anciano de 80 o más Años , Actitud Frente a la Salud , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/fisiopatología , Neoplasias de la Mama/cirugía , Carcinoma in Situ/diagnóstico por imagen , Carcinoma in Situ/fisiopatología , Carcinoma in Situ/cirugía , Carcinoma Intraductal no Infiltrante/diagnóstico por imagen , Carcinoma Intraductal no Infiltrante/fisiopatología , Carcinoma Intraductal no Infiltrante/cirugía , Terapia Combinada , Emociones , Femenino , Humanos , Salud Mental , Persona de Mediana Edad , Radiografía , Estudios Retrospectivos , Autoevaluación (Psicología) , Conducta Sexual , Factores Socioeconómicos , Encuestas y Cuestionarios
15.
Tumori ; 85(6): 488-93, 1999.
Artículo en Inglés | MEDLINE | ID: mdl-10774571

RESUMEN

AIMS AND BACKGROUND: In spite of the fact that ductal carcinoma in situ (DCIS) of the breast is a frequently encountered clinical problem, there is no consensus about the optimal treatment of clinically occult (i.e., mammographic presentation only) DCIS. Interest in breast conservation therapy has recently increased. Few data are available in Italy on the conservative treatment with surgery and adjuvant postoperative radiotherapy. METHODS: A retrospective multi-institutional study was performed in 15 Radiation Oncology Departments in northern Italy involving 112 women with subclinical DCIS of the breast treated between 1982 and 1993. Age of the patients ranged between 32 and 72 years (median, 50 years). All of them underwent conservative surgery: quadrantectomy in 89, tumorectomy in 11, and wide excision in 12 cases. The most common histologic subtype was comedocarcinoma (37%). The median pathologic size was 10 mm (range 1 to 55 mm). Axillary dissection was performed in 83 cases: all the patients were node negative. All the patients received adjunctive radiation therapy with 60Co units (77%) or 6 MV linear accelerators (23%) for a median total dose to the entire breast of 50 Gy (mean, 49.48 Gy; range, 45-60 Gy). Seventy-six cases (68%) received a boost to the tumor bed at a dose of 8-20 Gy (median 10 Gy) for a minimum tumor dose of 58 Gy. RESULTS: At a median follow-up of 66 months, 8 local recurrences were observed, 4 intraductal and 4 invasive. All recurrent patients had a salvage mastectomy and are alive and free of disease at this writing. The 10-year actuarial overall, cause-specific, and recurrence-free survival was of 98.8%, 100%, and 91%, respectively. CONCLUSIONS: The retrospective multicentric study, with a local control rate of more than 90% at 10 years with 100% cause-specific survival, showed that conservative surgery and adjuvant radiation therapy is a safe and efficacious treatment for patients with occult, non-palpable DCIS.


Asunto(s)
Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Carcinoma Intraductal no Infiltrante/radioterapia , Carcinoma Intraductal no Infiltrante/cirugía , Adulto , Neoplasias de la Mama/diagnóstico por imagen , Carcinoma Intraductal no Infiltrante/diagnóstico por imagen , Supervivencia sin Enfermedad , Femenino , Humanos , Italia , Mamografía , Mastectomía Segmentaria , Persona de Mediana Edad , Radioterapia Adyuvante , Estudios Retrospectivos , Resultado del Tratamiento
16.
J Neurooncol ; 36(2): 179-83, 1998 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-9525817

RESUMEN

We describe a case of glioblastoma treated with chemoradiotherapy that spread to the dura mater with direct invasion of the skull base, protrusion into the homolateral nasal fossa, and penetrated of the frontal sinus, the orbital wall and the ethmoidal sinuses. Only eight cases of glioblastoma showing this development have been described in the literature; one of these, however, had a sarcomatous component which was absent in our case.


Asunto(s)
Neoplasias Encefálicas/patología , Glioblastoma/patología , Neoplasias Nasofaríngeas/patología , Neoplasias Nasofaríngeas/secundario , Neoplasias Orbitales/patología , Neoplasias Orbitales/secundario , Anciano , Duramadre/patología , Glioblastoma/tratamiento farmacológico , Glioblastoma/radioterapia , Humanos , Masculino , Invasividad Neoplásica , Neoplasias de la Base del Cráneo/patología , Neoplasias de la Base del Cráneo/secundario
17.
Cancer ; 82(2): 355-61, 1998 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-9445194

RESUMEN

BACKGROUND: The outcome after treatment for glioblastoma remains poor. Therefore, the authors evaluated the long term efficacy and toxicity of treatment with radiotherapy and concurrent carboplatin plus teniposide followed by three cycles of carmustine in patients who underwent resection for glioblastoma. METHODS: Fifty-six newly diagnosed patients with glioblastoma underwent radiotherapy (1.8-2 gray [Gy]/day, 5 days a week using limited fields up to 60 Gy), and concurrent chemotherapy with carboplatin (350 mg/m2) on Days 1, 22, and 43, and teniposide (50 mg/m2) on Days 1, 2, 3, 22, 23, 24, 43, 44, and 45. Four weeks after the end of radiotherapy, patients were given carmustine (200 mg/m2) every 8 weeks for 3 cycles. Treatment then was suspended, but if disease progression was found, treatment was resumed using different drugs. RESULTS: All 56 patients were evaluated for time to progression (TTP) and median survival time (MST). The TTP was 7.5 months and the MST was 12.5 months. Toxicity manifested as thrombocytopenia and in most cases was acceptable. Four patients (7.1%) had radiation necrosis at 2, 2, 7, and 9 months, respectively, from the end of radiotherapy. CONCLUSIONS: The results obtained in the current study with concurrent radiochemotherapy in patients with glioblastoma are comparable to the best results reported using radiotherapy alone followed by chemotherapy with nitrosoureas.


Asunto(s)
Antineoplásicos Fitogénicos/administración & dosificación , Antineoplásicos/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Encefálicas/radioterapia , Carboplatino/administración & dosificación , Glioblastoma/radioterapia , Tenipósido/administración & dosificación , Adulto , Anciano , Antineoplásicos/efectos adversos , Antineoplásicos/uso terapéutico , Antineoplásicos Alquilantes/administración & dosificación , Antineoplásicos Alquilantes/efectos adversos , Antineoplásicos Fitogénicos/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias Encefálicas/tratamiento farmacológico , Neoplasias Encefálicas/cirugía , Carboplatino/efectos adversos , Carmustina/administración & dosificación , Carmustina/efectos adversos , Terapia Combinada , Progresión de la Enfermedad , Femenino , Glioblastoma/tratamiento farmacológico , Glioblastoma/cirugía , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Necrosis , Compuestos de Nitrosourea/uso terapéutico , Modelos de Riesgos Proporcionales , Traumatismos por Radiación/etiología , Dosificación Radioterapéutica , Análisis de Supervivencia , Tasa de Supervivencia , Tenipósido/efectos adversos , Trombocitopenia/inducido químicamente , Resultado del Tratamiento
18.
Eur J Cancer ; 33(10): 1559-65, 1997 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-9389915

RESUMEN

The optimal treatment of ductal carcinoma in situ (DCIS) of the breast has not yet been established. The effectiveness of adjuvant postoperative radiotherapy after conservative surgery is debated. Few data are available in Italy on the combined treatment. A collaborative multi-institutional study on this issue in 10 radiation oncology departments of the north-east of Italy was conducted. One hundred and thirty nine women with DCIS of the breast were treated between 1980 and 1990. Age ranged between 28 and 88 years (median 50 years). Surgical procedures were: quadrantectomy in 108, lumpectomy in 22 and wide excision in 9 cases. The axilla was surgically staged in 97 cases: all the patients were node-negative. Radiation therapy was delivered with 60Co units (78%) or 6 MV linear accelerators (22%) for a median total dose to the entire breast of 50 Gy (mean 49.48 Gy; range 45-60 Gy). The tumour bed was boosted in 109 cases (78%) at a dose of 4-30 Gy (median 10 Gy) for a minimum tumour dose of 58 Gy. Median follow-up was 81 months. Thirteen local recurrences were recorded, 7 intraductal and 6 invasive. All recurrent patients had a salvage mastectomy and are alive and free of disease. Actuarial overall, cause-specific and recurrence-free survival at 10 years are of 93%, 100% and 86%, respectively. The results of this retrospective multicentric study substantiate the favourable data reported in the literature and confirm the efficacy of the breast-conserving treatment of DCIS employing conservative surgery and adjuvant radiation therapy.


Asunto(s)
Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Carcinoma in Situ/radioterapia , Carcinoma in Situ/cirugía , Carcinoma Ductal de Mama/radioterapia , Carcinoma Ductal de Mama/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Mastectomía Segmentaria , Persona de Mediana Edad , Recurrencia Local de Neoplasia/terapia , Radioterapia Adyuvante , Radioterapia de Alta Energía , Estudios Retrospectivos , Tasa de Supervivencia
19.
Am J Clin Oncol ; 20(4): 364-7, 1997 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-9256890

RESUMEN

A Phase II study with a combination of BCNU and alpha-interferon (IFN) was conducted in patients with high-grade glioma recurrent after surgery and radiation treatment in order to investigate tumor control and toxicity. Twenty-one non-chemotherapy pretreated patients were administered 6 MU alpha-IFN in a 2-h infusion followed by 150 mg/m2 BCNU i.v. on day 1. Three MU alpha-IFN were subsequently administered subcutaneously on alternating days three times a week, until recycling of the whole procedure on day 42. Among 21 patients, partial remission was obtained in 7 (33%; 95% CI = 15-57) and stable disease in 6 (29%; CI = 11-52); overall Kaplan-Meier median time to progression (TTP) was 4.5 months (CI = 4-9) and the overall median survival time (MST) was 7 months (CI = 5-13). In patients who underwent surgical redebulking prior to chemotherapy, TTP and MST were 9 (CI = 7-14) and 15 months (CI = 11.0-39.0); in patients who were not operated on again before chemotherapy, these values were 4 (CI = 2-5; log rank test, p = 0.0026) and 5.5 months (CI = 4-7; log rank test, p = 0.0012) respectively. The results of this regimen in relapsing patients, especially following surgical redebulking, are encouraging; toxicity is acceptable, and further studies on combined alpha-IFN and multiple-agent chemotherapy are warranted.


Asunto(s)
Antineoplásicos Alquilantes/administración & dosificación , Antineoplásicos/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Encefálicas/tratamiento farmacológico , Carmustina/administración & dosificación , Glioma/tratamiento farmacológico , Interferón-alfa/administración & dosificación , Recurrencia Local de Neoplasia/tratamiento farmacológico , Adulto , Anciano , Antineoplásicos/efectos adversos , Antineoplásicos Alquilantes/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Plaquetas/efectos de los fármacos , Neoplasias Encefálicas/radioterapia , Neoplasias Encefálicas/cirugía , Carmustina/efectos adversos , Terapia Combinada , Progresión de la Enfermedad , Femenino , Glioblastoma/tratamiento farmacológico , Glioblastoma/radioterapia , Glioblastoma/cirugía , Glioma/radioterapia , Glioma/cirugía , Humanos , Infusiones Intravenosas , Inyecciones Subcutáneas , Interferón-alfa/efectos adversos , Leucopenia/inducido químicamente , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/cirugía , Proteínas Recombinantes , Inducción de Remisión , Tasa de Supervivencia
20.
J Neurooncol ; 30(3): 247-55, 1996 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-8943100

RESUMEN

PURPOSE: The poor results from treatment of high grade glioma prompted us to explore new protocols involving concurrent radio-chemotherapy. Our primary objective was to evaluate the feasibility of very early postoperative chemotherapy with BCNU, concurrent radio-chemotherapy with carboplatin and teniposide, and post-radiotherapy BCNU. Our secondary objectives were to evaluate time to progression, and overall survival. PATIENTS AND METHODS: We treated 24 newly diagnosed patients (pts) with BCNU 150 mg/m2 seven days after surgery. Thirty days later, we started radiotherapy, 1.8 to 2 Gy/day for 5 days a week on limited fields up to 60 Gy, and concurrent chemotherapy with carboplatin 250 mg/m2 on days 1, 22, and 43, and teniposide 50 mg/m2 on days 1, 2, 3, 22, 23, 24, 43, 44 and 45. Two cycles of 150 mg/m2 BCNU were then given at 30 and 70 days, respectively, after the end of the radio-chemotherapy course. Therapy was then suspended, but if disease progression was evident, treatment was resumed with drugs that had not been previously employed. Surgical reintervention was not routinely considered. RESULTS: Following radio-chemotherapy treatment in the 24 pts evaluable for response, we observed partial remissions in 8 cases (33%) and stable disease in 12 (50%). Actuarial estimates of progression free survival (PFS) were 33 weeks, with 56 wks for anaplastic astrocytoma and 31 weeks for glioblastoma. Median survival time (MST) of all pts was 58 weeks; 51 weeks for glioblastoma and was not reached for anaplastic astrocytoma. This regimen was feasible. Of 144 planned cycles, 139 were delivered, and among these only in 13 and 9 cycles the doses were reduced by 75 and 50%, respectively. We did not observe any gastrointestinal toxicity. Grade 2 hematological toxicity occurred in 25% of pts. grade 3 in 4% and neurological toxicity in 3% of the pts during BCNU delivery, probably due to a sharp increase in intracranial pressure. CONCLUSION: Early chemotherapy, concurrent chemo-radiotherapy and brief post-radio-therapy chemotherapy are feasible and well tolerated. The objective response and disease stabilization rates appear similar to previous experiences.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Encefálicas/tratamiento farmacológico , Neoplasias Encefálicas/radioterapia , Glioblastoma/tratamiento farmacológico , Glioblastoma/radioterapia , Adulto , Anciano , Antineoplásicos/administración & dosificación , Antineoplásicos Alquilantes/administración & dosificación , Antineoplásicos Fitogénicos/administración & dosificación , Neoplasias Encefálicas/mortalidad , Carboplatino/administración & dosificación , Carmustina/administración & dosificación , Terapia Combinada , Femenino , Glioblastoma/mortalidad , Humanos , Masculino , Persona de Mediana Edad , Análisis de Supervivencia , Tenipósido/administración & dosificación , Factores de Tiempo
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