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1.
Epilepsy Behav ; 156: 109841, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38768551

RESUMEN

INTRODUCTION: Seizures are a common complication of subarachnoid hemorrhage (SAH) in both acute and late stages: 10-20 % acute symptomatic seizures, 12-25 % epilepsy rate at five years. Our aim was to identify early electroencephalogram (EEG) and computed tomography (CT) findings that could predict long-term epilepsy after SAH. MATERIAL AND METHODS: This is a multicenter, retrospective, longitudinal study of adult patients with aneurysmal SAH admitted to two tertiary care hospitals between January 2011 to December 2022. Routine 30-minute EEG recording was performed in all subjects during admission period. Exclusion criteria were the presence of prior structural brain lesions and/or known epilepsy. We documented the presence of SAH-related cortical involvement in brain CT and focal electrographic abnormalities (epileptiform and non-epileptiform). Post-SAH epilepsy was defined as the occurrence of remote unprovoked seizures ≥ 7 days from the bleeding. RESULTS: We included 278 patients with a median follow-up of 2.4 years. The mean age was 57 (+/-12) years, 188 (68 %) were female and 49 (17.6 %) developed epilepsy with a median latency of 174 days (IQR 49-479). Cortical brain lesions were present in 189 (68 %) and focal EEG abnormalities were detected in 158 patients (39 epileptiform discharges, 119 non-epileptiform abnormalities). The median delay to the first EEG recording was 6 days (IQR 2-12). Multiple Cox regression analysis showed higher risk of long-term epilepsy in those patients with CT cortical involvement (HR 2.6 [1.3-5.2], p 0.009), EEG focal non-epileptiform abnormalities (HR 3.7 [1.6-8.2], p 0.002) and epileptiform discharges (HR 6.7 [2.8-15.8], p < 0.001). Concomitant use of anesthetics and/or antiseizure medication during EEG recording had no influence over its predictive capacity. ROC-curve analysis of the model showed good predictive capability at 5 years (AUC 0.80, 95 %CI 0.74-0.87). CONCLUSIONS: Focal electrographic abnormalities (both epileptiform and non-epileptiform abnormalities) and cortical involvement in neuroimaging predict the development of long-term epilepsy. In-patient EEG and CT findings could allow an early risk stratification and facilitate a personalized follow-up and management of SAH patients.


Asunto(s)
Electroencefalografía , Epilepsia , Hemorragia Subaracnoidea , Humanos , Hemorragia Subaracnoidea/complicaciones , Hemorragia Subaracnoidea/fisiopatología , Femenino , Masculino , Persona de Mediana Edad , Estudios Longitudinales , Estudios Retrospectivos , Anciano , Epilepsia/etiología , Epilepsia/diagnóstico , Epilepsia/diagnóstico por imagen , Epilepsia/fisiopatología , Adulto , Tomografía Computarizada por Rayos X , Neuroimagen , Encéfalo/diagnóstico por imagen , Encéfalo/fisiopatología
2.
Pharmacogenomics J ; 18(1): 14-22, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-28607505

RESUMEN

The role of genetic molecular markers in neoadjuvant treatment for locally advanced esophageal cancer has been reviewed, focusing strictly on concurrent chemoradiation protocols followed by surgery. Eleven studies evaluated the role of mRNA expression profile; the end point was overall survival (OS) in two studies and different definitions of histological response in nine. Genes reported as significant were involved in cell cycle control (30), apoptosis (7), structural molecules (9), cell metabolism (6) and DNA repair (1). Seven studies reported about 15 microRNA (miRNA) molecules associated with OS (2) or histological response (13), however, defined with different classifications. Their target genes were prevalently involved in cell cycle control (4), apoptosis (1), cell adhesion (1), migration (1) and angiogenesis (1). Gene polymorphisms (single-nucleotide polymorphisms (SNPs)) have been evaluated in 8 studies reporting 10 variants associated with survival or pathological response. OS was the end point in six of these studies. SNPs reported as significant were involved in DNA repair system (4), detoxification (2), folate metabolism (6), drug efflux (2) and others (2). In a study, a panel including histology, pathological response and five SNPs discriminated two subsets of patients with 5-year survival rates of 79.3% and 26.3% (hazard ratio 6.25, P<0.0001). In another study, combination of stage, grade and 4 miRNAs improved prediction of pathological response (P=10-30). At present, given the great inconsistency of the data and the variability of the end points, definite conclusions are extremely difficult, if not impossible. More consistent data can derive only from analyses obtained from patients included in prospective randomized trials while panels combining genetic and clinical factors may improve prediction.


Asunto(s)
Neoplasias Esofágicas/genética , Marcadores Genéticos/genética , Antineoplásicos/uso terapéutico , Quimioradioterapia/métodos , Neoplasias Esofágicas/tratamiento farmacológico , Neoplasias Esofágicas/radioterapia , Humanos , Terapia Neoadyuvante/métodos , Polimorfismo de Nucleótido Simple/genética
3.
Sci Rep ; 7(1): 8413, 2017 08 21.
Artículo en Inglés | MEDLINE | ID: mdl-28827728

RESUMEN

MicroRNAs (miRNAs) hold great promise in cancer research. The use of appropriate reference miRNAs for normalization of qPCR data is crucial for accurate expression analysis. We present here analysis and verification of current data, proposing a workflow strategy for identification of reference miRNAs in colorectal cancer (CRC). We performed a systematic review of studies aimed to identify stable reference miRNAs in CRC through high-throughput screening. Among the candidate miRNAs selected from the literature we excluded those predicted to target oncogenes or tumor suppressor gene. We then assessed the expression levels of the remaining candidates in exosomes, plasma and tissue samples from CRC patients and healthy controls. The expression stability was evaluated by box-plot, ∆Cq analysis, NormFinder and BestKeeper statistical algorithms. The effects of normalisers on the relative quantification of the oncogenic miR-1290 was also assessed. Our results consistently showed that different combinations of miR-520d, miR-1228 and miR-345 provided the most stably expressed reference miRNAs in the three biological matrices. We identified suitable reference miRNAs for future miRNA expression studies in exosomes plasma and tissues CRC samples. We also provided a novel conceptual framework that overcome the need of performing ex novo identification of suitable reference genes in single experimental systems.


Asunto(s)
Neoplasias Colorrectales/patología , Perfilación de la Expresión Génica/métodos , Perfilación de la Expresión Génica/normas , MicroARNs/análisis , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Reacción en Cadena en Tiempo Real de la Polimerasa/normas , Estándares de Referencia , Humanos , MicroARNs/genética
5.
Pharmacogenomics J ; 17(3): 252-257, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-26927287

RESUMEN

Candidate genes involved in DNA repair, 5-fluorouracil metabolism and drug detoxification were genotyped in 124 patients receiving neoadjuvant chemoradiation treatment for locally advanced esophageal cancer and their predictive role for long-term relapse-free survival (RFS) and cancer-specific survival (CSS) were evaluated. A panel including MTHFR 677TT, MDR1 2677GT, GSTP1 114CC, XPC 499CC and XPC 939AC+CC, defined as high-risk genotypes, discriminated subgroups with significantly different outcomes. When the panel was combined with histology, patients split into two subsets with 5-year RFS and CSS rates of 65% vs 27% (hazard ratio (HR) 3.0, P<0.0001) and 69% vs 31% (HR 2.9, P<0.0001), respectively. Combining the 5-single-nucleotide polymorphism (5-SNP) panel with pathological response defined two major informative risk classes with 5-year PFS and CSS rates of 79.4% vs 17.7% (HR 6.71, P<0.0001) and 79.3% vs 26.3% (HR 6.25, P<0.0001), respectively. This classification achieved a sensitivity of 79%, a specificity of 85.4% and an accuracy of 81.8%.


Asunto(s)
Adenocarcinoma/terapia , Biomarcadores de Tumor/genética , Carcinoma de Células Escamosas/terapia , Quimioradioterapia Adyuvante , Neoplasias Esofágicas/terapia , Perfilación de la Expresión Génica/métodos , Terapia Neoadyuvante , Polimorfismo de Nucleótido Simple , Adenocarcinoma/genética , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adulto , Anciano , Carcinoma de Células Escamosas/genética , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/patología , Supervivencia sin Enfermedad , Neoplasias Esofágicas/genética , Neoplasias Esofágicas/mortalidad , Neoplasias Esofágicas/patología , Carcinoma de Células Escamosas de Esófago , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Farmacogenética , Medicina de Precisión , Valor Predictivo de las Pruebas , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
6.
Ann Oncol ; 27(11): 2074-2081, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27573560

RESUMEN

BACKGROUND: Six months of oxaliplatin-based adjuvant chemotherapy is standard of care for radically resected stage III colon cancer and an accepted option for high-risk stage II. A shorter duration of therapy, if equally efficacious, would be advantageous for patients and Health-Care Systems. PATIENTS AND METHODS: TOSCA ['Randomized trial investigating the role of FOLFOX-4 or XELOX (3 versus 6 months) regimen duration and bevacizumab as adjuvant therapy for patients with stage II/III colon cancer] is an open-label, phase III, multicenter, noninferiority trial randomizing patients with high-risk stage II or stage III radically resected colon cancer to receive 3 months (arm 3 m) versus 6 months (arm 6 m) of FOLFOX4/XELOX. Primary end-point was relapse-free survival. We present here safety and compliance data. RESULTS: From June 2007 to March 2013, 3759 patients were accrued from 130 Italian sites, 64% receiving FOLFOX4 and 36% XELOX in either arm. Treatment completion rate without any modification was 35% versus 12% and with delays or dose reduction 52% versus 44% in arm 3 and 6 m. Treatment was permanently discontinued in 8% (arm 3 m) and 33% (arm 6 m). In arm 6 m, 50% of patients discontinuing treatment did so after completing 80% of planned program. Grade 3+ toxicities were higher in arm 6 m than that in 3 m. Grade 2+ neuropathy was 31.2% versus 8.8% (P < 0.0001) while grade 3+ was 8.4 versus 1.3 (P < 0.0001), in arm 3 and 6 m. Seven deaths within 30 days from last treatment administration in arm 6 m and three deaths in arm 3 m were observed (0.3% versus 0.1%, P = 0.34). CONCLUSIONS: TOSCA is the first trial comparing 3 versus 6 months of adjuvant chemotherapy completing accrual within the international initiative of treatment duration evaluation (International Duration Evaluation of Adjuvant, IDEA). High compliance to treatment in control arm will allow a correct assessment of potential differences between the two treatment durations. CLINICALTRIALSGOV REGISTRATION NUMBER: NCT00646607.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias del Colon/tratamiento farmacológico , Desoxicitidina/análogos & derivados , Fluorouracilo/análogos & derivados , Recurrencia Local de Neoplasia/tratamiento farmacológico , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Bevacizumab/administración & dosificación , Capecitabina , Quimioterapia Adyuvante/efectos adversos , Neoplasias del Colon/mortalidad , Neoplasias del Colon/patología , Terapia Combinada , Desoxicitidina/administración & dosificación , Desoxicitidina/efectos adversos , Supervivencia sin Enfermedad , Femenino , Fluorouracilo/administración & dosificación , Fluorouracilo/efectos adversos , Humanos , Leucovorina/administración & dosificación , Leucovorina/efectos adversos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/mortalidad , Recurrencia Local de Neoplasia/patología , Estadificación de Neoplasias , Compuestos Organoplatinos/administración & dosificación , Compuestos Organoplatinos/efectos adversos , Oxaliplatino , Oxaloacetatos , Cooperación del Paciente
7.
PLoS One ; 11(5): e0154325, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27152840

RESUMEN

UNLABELLED: Breast cancer (BC) in young adult patients (YA) has a more aggressive biological behavior and is associated with a worse prognosis than BC arising in middle aged patients (MA). We proposed that differentially expressed miRNAs could regulate genes and proteins underlying aggressive phenotypes of breast tumors in YA patients when compared to those arising in MA patients. OBJECTIVE: Using integrated expression analyses of miRs, their mRNA and protein targets and stromal gene expression, we aimed to identify differentially expressed profiles between tumors from YA-BC and MA-BC. METHODOLOGY AND RESULTS: Samples of ER+ invasive ductal breast carcinomas, divided into two groups: YA-BC (35 years or less) or MA-BC (50-65 years) were evaluated. Screening for BRCA1/2 status according to the BOADICEA program indicated low risk of patients being carriers of these mutations. Aggressive characteristics were more evident in YA-BC versus MA-BC. Performing qPCR, we identified eight miRs differentially expressed (miR-9, 18b, 33b, 106a, 106b, 210, 518a-3p and miR-372) between YA-BC and MA-BC tumors with high confidence statement, which were associated with aggressive clinicopathological characteristics. The expression profiles by microarray identified 602 predicted target genes associated to proliferation, cell cycle and development biological functions. Performing RPPA, 24 target proteins differed between both groups and 21 were interconnected within a network protein-protein interactions associated with proliferation, development and metabolism pathways over represented in YA-BC. Combination of eight mRNA targets or the combination of eight target proteins defined indicators able to classify individual samples into YA-BC or MA-BC groups. Fibroblast-enriched stroma expression profile analysis resulted in 308 stromal genes differentially expressed between YA-BC and MA-BC. CONCLUSION: We defined a set of differentially expressed miRNAs, their mRNAs and protein targets and stromal genes that distinguish early onset from late onset ER positive breast cancers which may be involved with tumor aggressiveness of YA-BC.


Asunto(s)
Neoplasias de la Mama/patología , MicroARNs/genética , Receptores de Estrógenos/metabolismo , Anciano , Neoplasias de la Mama/genética , Neoplasias de la Mama/metabolismo , Femenino , Perfilación de la Expresión Génica , Humanos , Persona de Mediana Edad
8.
Pharmacogenomics J ; 16(3): 266-71, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26054330

RESUMEN

The occurrence of a second primary esophageal carcinoma (EC) in long-term cancer survivors may represent a late effect of previous radio-chemotherapeutic treatment. To identify the genetic factors that could increase this risk, we analyzed nine variants within ERCC1, XPD, XRCC1 and XRCC3 DNA repair pathway genes, and GSTP1, TP53 and MDM2 genes in 61 patients who received radio-chemotherapy for a prior lymphoma or breast cancer; 29 of them had a second primary EC. This cohort consists of 22 esophageal squamous cell carcinoma (ESCC) and 7 esophageal adenocarcinoma (EADC) patients. A validation cohort of 154 patients with sporadic EC was also included. The XPD Asp312Asn (rs1799793) was found to be associated with the risk of developing second primary ESCC (P=0.015). The resultant variant was also involved in the onset of sporadic ESCC (P=0.0018). To know in advance who among long-term cancer survivors have an increased risk of EC could lead to a more appropriate follow-up strategy.


Asunto(s)
Adenocarcinoma/genética , Biomarcadores de Tumor/genética , Neoplasias de la Mama/terapia , Carcinoma de Células Escamosas/genética , Quimioradioterapia , Neoplasias Esofágicas/genética , Variación Genética , Linfoma/terapia , Neoplasias Primarias Secundarias/genética , Sobrevivientes , Proteína de la Xerodermia Pigmentosa del Grupo D/genética , Adenocarcinoma/diagnóstico , Neoplasias de la Mama/patología , Carcinoma de Células Escamosas/diagnóstico , Estudios de Casos y Controles , Neoplasias Esofágicas/diagnóstico , Carcinoma de Células Escamosas de Esófago , Femenino , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Humanos , Linfoma/diagnóstico , Masculino , Neoplasias Primarias Secundarias/diagnóstico , Fenotipo , Proyectos Piloto , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
9.
Pharmacogenomics J ; 16(6): 525-529, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-26503812

RESUMEN

So far, no reliable predictive clinicopathological markers of response to aromatase inhibitors (AIs) have been identified, and little is known regarding the role played by host genetics. To identify constitutive predictive markers, an array-based association study was performed in a cohort of 55 elderly hormone-dependent breast cancer (BC) patients treated with third-generation AIs. The array used in this study interrogates variants in 225 drug metabolism and disposition genes with documented functional significance. Six variants emerged as associated with response to AIs: three located in ABCG1, UGT2A1, SLCO3A1 with a good response, two in SLCO3A1 and one in ABCC4 with a poor response. Variants in the AI target CYP19A1 resulted associated with a favourable response only as haplotype; haplotypes with increased response association were also detected for ABCG1 and SLCO3A1. These results highlight the relevance of host genetics in the response to AIs and represent a first step toward precision medicine for elderly BC patients.


Asunto(s)
Antineoplásicos Hormonales/uso terapéutico , Inhibidores de la Aromatasa/uso terapéutico , Aromatasa/genética , Biomarcadores de Tumor/genética , Perfilación de la Expresión Génica/métodos , Análisis de Secuencia por Matrices de Oligonucleótidos , Farmacogenética/métodos , Pruebas de Farmacogenómica/métodos , Variantes Farmacogenómicas , Receptores de Estrógenos/metabolismo , Transportador de Casetes de Unión a ATP, Subfamilia G, Miembro 1/genética , Transportador de Casetes de Unión a ATP, Subfamilia G, Miembro 1/metabolismo , Factores de Edad , Anciano , Anciano de 80 o más Años , Antineoplásicos Hormonales/efectos adversos , Aromatasa/metabolismo , Inhibidores de la Aromatasa/efectos adversos , Biomarcadores de Tumor/metabolismo , Neoplasias de la Mama/enzimología , Neoplasias de la Mama/genética , Neoplasias de la Mama/patología , Femenino , Glucuronosiltransferasa/genética , Glucuronosiltransferasa/metabolismo , Haplotipos , Humanos , Italia , Persona de Mediana Edad , Proteínas Asociadas a Resistencia a Múltiples Medicamentos/genética , Proteínas Asociadas a Resistencia a Múltiples Medicamentos/metabolismo , Transportadores de Anión Orgánico/genética , Transportadores de Anión Orgánico/metabolismo , Fenotipo , Medicina de Precisión , Valor Predictivo de las Pruebas , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
10.
J Dairy Sci ; 99(1): 120-9, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26547644

RESUMEN

In this study, the survival of the functional yeast Kluyveromyces marxianus B0399 in an industrially produced fermented milk was evaluated. In particular, the yeast viability was assessed throughout the entire shelf-life of the product (30 d) to ensure the presence of the effective yeast dose (20 million viable cells for each serving of 125 g) while avoiding, by sorbic acid addition, yeast growth, which could affect product quality and stability. To find the best combination of yeast and sorbic acid concentration, 13 different combinations were tested, and then 2 of them were chosen for industrial production. In production at lower concentrations (30 million viable cells, 150 mg/kg of sorbic acid) the effective dose was maintained only at 4 and 6°C, whereas at higher dosages (70 million viable cells, 250 mg/kg of sorbic acid) the effect of temperature was less evident. In all the trials, the concentration of sorbic acid was not affected by microbial metabolism and remained stable throughout the entire shelf-life.


Asunto(s)
Productos Lácteos Cultivados/microbiología , Kluyveromyces/efectos de los fármacos , Ácido Sórbico/farmacología , Recuento de Colonia Microbiana , Productos Lácteos Cultivados/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Aditivos Alimentarios/análisis , Manipulación de Alimentos , Microbiología de Alimentos , Concentración de Iones de Hidrógeno , Kluyveromyces/crecimiento & desarrollo , Pruebas de Sensibilidad Microbiana , Viabilidad Microbiana/efectos de los fármacos , Sensibilidad y Especificidad
12.
Br J Cancer ; 109(3): 807-13, 2013 Aug 06.
Artículo en Inglés | MEDLINE | ID: mdl-23839493

RESUMEN

BACKGROUND: Tumour-released DNA in blood represents a promising biomarker for cancer detection. Although epigenetic alterations such as aberrant promoter methylation represent an appealing perspective, the discordance existing between frequencies of alterations found in DNA extracted from tumour tissue and cell-free DNA (cfDNA) has challenged their practical clinical application. With the aim to explain this bias of agreement, we investigated whether protocadherin 10 (PCDH10) promoter methylation in tissue was associated with methylation pattern in matched cfDNA isolated from plasma of patients with colorectal cancer (CRC), and whether the strength of concordance may depend on levels of cfDNA, integrity index, as well as on different clinical-pathological features. METHODS: A quantitative methylation-specific PCR was used to analyse a selected CpG site in the PCDH10 promoter of 67 tumour tissues, paired normal mucosae, and matched plasma samples. The cfDNA integrity index and cfDNA concentration were assessed using a real-time PCR assay. RESULTS: The PCDH10 promoter methylation was detected in 63 out of 67 (94.0%) surgically resected colorectal tumours and in 42 out of 67 (62.7%) plasma samples. The median methylation rate in tumour tissues and plasma samples was 43.5% (6.3-97.8%) and 5.9% (0-80.9%), respectively. There was a significant correlation between PCDH10 methylation in cfDNA and tumour tissue in patients with early CRC (P<0.0001). The ratio between plasma and tissue methylation rate increases with increasing cfDNA integrity index in early-stage cancers (P=0.0299) and with absolute cfDNA concentration in advanced cancers (P=0.0234). CONCLUSION: Our findings provide new insight into biological aspects modulating the concordance between tissues and plasma methylation profiles.


Asunto(s)
Cadherinas/genética , Neoplasias Colorrectales/sangre , Neoplasias Colorrectales/genética , Metilación de ADN , ADN de Neoplasias/genética , Estudios de Cohortes , Neoplasias Colorrectales/patología , ADN de Neoplasias/sangre , ADN de Neoplasias/aislamiento & purificación , Regulación hacia Abajo , Silenciador del Gen , Humanos , Regiones Promotoras Genéticas , Protocadherinas
13.
Ann Surg Oncol ; 20(6): 1993-9, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23274533

RESUMEN

BACKGROUND: Neoadjuvant chemoradiotherapy (CRT) is now considered the standard of care by many centers in the treatment of both squamous cell carcinoma (SCC) and adenocarcinoma of the esophagus. This study evaluates the effectiveness of a neoadjuvant CRT protocol, as regards pathological complete response (pCR) rate and long-term survival. METHODS: From 2003 to 2011, at Upper G.I. Surgery Division of Verona University, 155 consecutive patients with locally advanced esophageal cancers (90 SCC, 65 adenocarcinoma) were treated with a single protocol of neoadjuvant CRT (docetaxel, cisplatin, and 5-fluorouracil with 50.4 Gy of concurrent radiotherapy). Response to CRT was evaluated through percentage of pathological complete response (pCR or ypT0N0), overall (OS) and disease-related survival (DRS), and pattern of relapse. RESULTS: One hundred thirty-one patients (84.5 %) underwent surgery. Radical resection (R0) was achieved in 123 patients (79.3 %), and pCR in 65 (41.9 %). Postoperative mortality was 0.7 % (one case). Five-year OS and DRS were respectively 43 and 49 % in the entire cohort, 52 and 59 % in R0 cases, and 72 and 81 % in pCR cases. Survival did not significantly differ between SCC and adenocarcinoma, except for pCR cases. Forty-nine patients suffered from relapse, which was mainly systemic in adenocarcinoma. Only three out of 26 pCR patients with previous adenocarcinoma developed relapse, always systemic. CONCLUSIONS: This study suggests that patients treated with the present protocol achieve good survival and high pCR rate. Further research is necessary to evaluate whether surgery on demand is feasible in selected patients, such as pCR patients with adenocarcinoma.


Asunto(s)
Adenocarcinoma/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carcinoma de Células Escamosas/terapia , Neoplasias Esofágicas/terapia , Terapia Neoadyuvante , Adenocarcinoma/secundario , Adulto , Anciano , Carcinoma de Células Escamosas/secundario , Quimioradioterapia Adyuvante , Cisplatino/administración & dosificación , Docetaxel , Neoplasias Esofágicas/patología , Esofagectomía , Femenino , Fluorouracilo/administración & dosificación , Hospitales de Alto Volumen , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Neoplasia Residual , Dosificación Radioterapéutica , Tasa de Supervivencia , Taxoides/administración & dosificación , Resultado del Tratamiento
14.
Acta Diabetol ; 49 Suppl 1: S123-31, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22249339

RESUMEN

Post-transplant diabetes mellitus represents an important complication of prolonged immunosuppressive treatment after solid organ transplantation. The immunosuppressive toxicity, responsible for a persistent impairment of glucose metabolism in pancreatic islet-transplanted patients, is mainly attributed to calcineurin inhibitors and steroids, while other immunosuppressive molecules (azathioprine and mycophenolic acid, MPA) are considered not to have a toxic effect. In the present study, in vitro effects of MPA have been investigated in mouse beta-cell lines (ßTC-1 and ßTC-6) and in purified human pancreatic islets. ßTC-1, ßTC-6, and human pancreatic islets were exposed to various concentrations of MPA for different times. Consequently, we evaluated the viability, the induction of apoptosis, the glucose-stimulated insulin secretion, and the expression of ß-cell function genes (Isl1, Pax6, Glut-2, glucokinase) and apoptosis-related genes (Bax and Bcl2). ßTC-1, ßTC-6, and human islets treated, respectively, for 48 and 72 h with 15-30 nM MPA showed altered islet architecture, as compared with control cells. We observed for ßTC-1 and ßTC-6 almost 70% reduction in cell viability; three to sixfold induction of TUNEL/apoptotic-positive cells quantified by FACS analysis. A twofold increase in apoptotic cells was observed in human islets after MPA exposure associated with strong inhibition of glucose-stimulated insulin secretion. Furthermore, we showed significant down-regulation of gene expression of molecules involved in ß-cell function and increase rate between Bax/Bcl2. Our data demonstrate that MPA has an in vitro diabetogenic effect interfering at multiple levels with survival and function of murine and human pancreatic ß-cells.


Asunto(s)
Expresión Génica/efectos de los fármacos , Inmunosupresores/farmacología , Células Secretoras de Insulina/citología , Células Secretoras de Insulina/efectos de los fármacos , Ácido Micofenólico/farmacología , Adolescente , Adulto , Animales , Apoptosis/efectos de los fármacos , Línea Celular , Supervivencia Celular/efectos de los fármacos , Células Cultivadas , Proteínas del Ojo/genética , Proteínas del Ojo/metabolismo , Femenino , Transportador de Glucosa de Tipo 2/genética , Transportador de Glucosa de Tipo 2/metabolismo , Proteínas de Homeodominio/genética , Proteínas de Homeodominio/metabolismo , Humanos , Insulina/metabolismo , Secreción de Insulina , Células Secretoras de Insulina/metabolismo , Islotes Pancreáticos/citología , Islotes Pancreáticos/efectos de los fármacos , Masculino , Ratones , Persona de Mediana Edad , Factor de Transcripción PAX6 , Factores de Transcripción Paired Box/genética , Factores de Transcripción Paired Box/metabolismo , Proteínas Represoras/genética , Proteínas Represoras/metabolismo , Adulto Joven
15.
Oncol Rep ; 27(1): 28-38, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21956537

RESUMEN

This study aimed to identify the CD24 and CD44 immunophenotypes within invasive ductal breast carcinoma (IDC) subgroups defined by immunohistochesmistry markers and to determine its influence on prognosis as well as its association with the expression of Ki-67, cytokeratins (CK5 and CK18) and claudin-7. Immunohistochemical expression of CD44 and CD24 alone or in combination was investigated in 95 IDC cases arranged in a tissue microarray (TMA). The association with subgroups defined as luminal A and B; HER2 rich and triple negative, or with the other markers and prognosis was analyzed. CD44+/CD24- and CD44-/CD24+ were respectively present in 8.4% and 16.8% of the tumors, a lack of both proteins was detected in 6.3%, while CD44+/CD24+ was observed in 45.3% of the tumors. Although there was no significant correlation between subgroups and different phenotypes, the CD44+/CD24- phenotype was more common in the basal subgroups but absent in HER2 tumors, whereas luminal tumors are enriched in CD44-/CD24+ and CD44+/CD24+ cells. The frequency of CD44+/CD24- or CD44-/CD24+ was not associated with clinical characteristics or biological markers. There was also no significant association of these phenotypes with the event free (DFS) and overall survival (OS). Single CD44+ was evident in 57.9% of the tumors and was marginally associated to grading and not to any other tumor characteristics as well as OS and DFS. CD24+ was positive in 74.7% of the tumors, showing a significant association with estrogen receptor, progesterone receptor and Ki-67 and a marginal association with CK18 and claudin-7. Expression of claudin-7 and Ki-67 did not associate with the cancer subgroups, while a positive association between CK18 and the luminal subgroups was found (P=0.03). CK5, CK18 and Ki-67 expression had no influence in OS or DFS. Single CD24+ (P=0.07) and claudin-7 positivity (P=0.05) were associated with reduced time of recurrence, suggesting a contribution of these markers to aggressiveness of breast cancer.


Asunto(s)
Biomarcadores de Tumor/análisis , Neoplasias de la Mama/metabolismo , Antígeno CD24/biosíntesis , Carcinoma Ductal de Mama/metabolismo , Claudinas/biosíntesis , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/patología , Antígeno CD24/análisis , Carcinoma Ductal de Mama/mortalidad , Carcinoma Ductal de Mama/patología , Claudinas/análisis , Femenino , Humanos , Receptores de Hialuranos/análisis , Receptores de Hialuranos/biosíntesis , Inmunohistoquímica , Estimación de Kaplan-Meier , Antígeno Ki-67/análisis , Antígeno Ki-67/biosíntesis , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Células Madre Neoplásicas/metabolismo , Células Madre Neoplásicas/patología , Pronóstico , Análisis de Matrices Tisulares
16.
Eur J Paediatr Dent ; 12(4): 236-8, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22185247

RESUMEN

AIM: The aim of our study is to verify if some of the noises produced in a dental surgery, especially those of high- speed drill and Erbium laser, might cause anxiety to children. MATERIALS AND METHODS: In order to confirm our hypothesis, we recorded these noises and then reproduced them to a group of children in a neutral setting, in this case at school. The children were aged 6 to 10 years, 55.9% were Italian, while the remaining 44.1% were of other nationalities. Some of them already had a previous experience at the dentist's. RESULTS: The range of images recalled by the children is very small, and they all refer to a realistic, imaginary and sometimes daily context (domestic, family and game related). Such representations have rarely been associated to negative sensations. CONCLUSION: The noise environment of the dentist's surgery, for what concerns the two stimuli we analysed (high-speed Drill and Erbium laser), does not cause an anxious reaction to the majority of children; as a matter of fact the percentage of positive sensations and emotions turns out to be predominant. The results obtained suggest it would be useful to protect this natural tendency, finding out the best method to prevent adult models, such as parents or clinical staff, from affecting it in a negative way.


Asunto(s)
Ansiedad al Tratamiento Odontológico , Ruido , Niño , Ansiedad al Tratamiento Odontológico/etiología , Equipo Dental de Alta Velocidad , Humanos , Láseres de Estado Sólido , Ruido/efectos adversos
17.
Int J Immunopathol Pharmacol ; 24(3): 695-702, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21978701

RESUMEN

Most autoinflammatory disorders typically come out in the pediatric population, although a limited number of patients may experience disease onset during adulthood. To date, a late disease onset has been described only in familial Mediterranean fever, caused by mutations in the MEFV gene, and in tumor necrosis factor receptor-associated periodic syndrome, caused by mutations in the TNFRSF1A gene. The relative rarity and lack of information on adult-onset autoinflammatory diseases make it likely that mutations will be found in an even smaller percentage of cases. With the aim of improving the genetic diagnosis in adults with suspected autoinflammatory disorders, we recently identified a set of variables related to the probability of detecting gene mutations in MEFV and TNFRSF1A and, in addition, we have also proposed a diagnostic score for identifying those patients at high risk of carrying mutations in these genes. In the present study we evaluated the preliminary score sensitivity and specificity on a wider number of patients in order to validate the goodness of fit of the model. Two hundred and nineteen consecutive patients with a clinical history of periodic fever attacks were screened for mutations in MEFV and TNFRSF1A genes; detailed information about family/personal history and clinical manifestations were also collected. For the validation of the score we considered data both from the 110 patients used to build the preliminary diagnostic score and from the additional 219 patients enrolled in the present study, for a total number of 329 patients. Early age at disease onset, positive family history for recurrent fever episodes, thoracic pain, abdominal pain and skin rash, which are the variables that had previously been shown to be significantly associated with a positive genetic test result (12), were used for validation. On univariate analysis the associations with a positive genetic test were: age at onset (odds ratio [OR] 0.43, p=0.003), positive family history for recurrent fever episodes (OR 5.81, p<0.001), thoracic pain (OR 3.17, p<0.001), abdominal pain (OR 3.80, p<0.001) and skin rash (OR 1.58, p=0.103). The diagnostic score was calculated using the linear combination of the estimated coefficients of the logistic multivariate model (cut-off equals to 0.24) revealing good sensitivity (0.778) and good specificity (0.718). In conclusion, our score may serve in the diagnostic evaluation of adult patients presenting with recurrent fever episodes suspected of having an autoinflammatory disorder, helping identify the few subjects among them who may be carriers of mutations in MEFV and TNFRSF1A genes.


Asunto(s)
Enfermedades Autoinflamatorias Hereditarias/diagnóstico , Adolescente , Adulto , Edad de Inicio , Anciano , Niño , Preescolar , ADN/biosíntesis , ADN/genética , Análisis Mutacional de ADN , Femenino , Amplificación de Genes , Predisposición Genética a la Enfermedad , Heterocigoto , Humanos , Lactante , Modelos Logísticos , Masculino , Curvas de Flujo-Volumen Espiratorio Máximo/genética , Persona de Mediana Edad , Modelos Biológicos , Oportunidad Relativa , Curva ROC , Receptores Tipo I de Factores de Necrosis Tumoral/genética , Reproducibilidad de los Resultados , Población Blanca , Adulto Joven
18.
Int J Immunopathol Pharmacol ; 23(3): 701-7, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20943039

RESUMEN

Tumor necrosis factor-alpha receptor (TNFR1)-associated periodic syndrome (TRAPS) is the most common autosomal-dominant autoinflammatory condition and is caused by mutations in the TNFRSF1A gene. TRAPS is characterized by recurrent attacks of fever typically lasting from 1 to 3 weeks; in addition to fever, common clinical features include mainly periorbital oedema, conjunctivitis, a migratory erythematous plaque simulating erysipela with underlying myalgia, and arthritis or arthralgia; serosal membrane inflammation is also possible. The identification of TNFRSF1A mutations as the genetic cause of TRAPS coincided with the wider use of biological agents in medicine and raised the possibility that blocking TNF could potentially represent the primary therapeutic goal in TRAPS, thus disclosing new treatment choices for this complex disease. In the past few years, isolated reports and case-series have been published suggesting that inhibition of TNF-alpha might represent a promising therapeutic approach in TRAPS. We present here our experience with etanercept in the treatment of patients affected with TRAPS, and we also add a review of the literature.


Asunto(s)
Antiinflamatorios no Esteroideos/uso terapéutico , Enfermedades Autoinflamatorias Hereditarias/tratamiento farmacológico , Inmunoglobulina G/uso terapéutico , Receptores del Factor de Necrosis Tumoral/fisiología , Adulto , Niño , Etanercept , Femenino , Enfermedades Autoinflamatorias Hereditarias/patología , Humanos , Masculino , Persona de Mediana Edad , Receptores del Factor de Necrosis Tumoral/uso terapéutico , Receptores Tipo I de Factores de Necrosis Tumoral/genética
19.
Scand J Immunol ; 72(3): 213-22, 2010 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20696018

RESUMEN

It is well established that the passive trans-placental passage of anti-Ro/SSA antibodies from mother to foetus is associated with the risk to develop an uncommon syndrome named neonatal lupus (NLE), where the congenital heart block represents the most severe clinical feature. Recent evidence demonstrated that also adult heart, classically considered invulnerable to the anti-Ro/SSA antibodies, may represent a target of the arrhythmogenicity of these autoantibodies. In particular, the prolongation of the QTc interval appears the most frequent abnormality observed in adults with circulating anti-Ro/SSA antibodies, with some data suggesting an association with an increased risk of ventricular arrhythmias, also life threatening. Moreover, even though the association between anti-Ro/SSA antibodies and conduction disturbances is undoubtedly less evident in adults than in infants, from the accurate dissection of the literature data the possibility arises that sometimes also the adult cardiac conduction tissue may be affected by such antibodies. The exact arrhythmogenic mechanisms involved in foetus/newborns and adults, respectively, have not been completely clarified as yet. However, increasing evidence suggests that anti-Ro/SSA antibodies may trigger rhythm disturbances through an inhibiting cross-reaction with several cardiac ionic channels, particularly the calcium channels (L-type and T-type), but also the potassium channel hERG, whose different expression and involvement in the cardiac electrophysiology during lifespan might account for the occurrence of age-related differences.


Asunto(s)
Anticuerpos Antinucleares/inmunología , Arritmias Cardíacas/etiología , Arritmias Cardíacas/inmunología , Adulto , Humanos , Canales Iónicos/inmunología , Síndrome de QT Prolongado/etiología , Síndrome de QT Prolongado/inmunología
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