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1.
J Clin Med ; 13(11)2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38892747

RESUMO

Background: This study aimed to gather data on physical activity (PA), bleeding, health-related quality of life, and health status, using a wearable device and an electronic patient-reported outcome (ePRO) app, in individuals with moderate or severe hemophilia A (HA) without inhibitors receiving treatment according to the clinical practice. Methods: This is a 12-month multicenter cohort study conducted in Italy. The primary outcomes included the description of PA by type and intensity, adherence to World Health Organization guidelines, bleeding, and health-related quality of life by EQ-5D questionnaire. PA data were collected continuously through a fitness tracker worn by the patient; all the other variables were collected through ePRO questionnaires. Results: Only 54 of the 103 enrolled subjects (52.4%) used their fitness tracker for the defined valid period; adolescents were the least compliant age group. PA was performed at low rates and intensity. Approximately 52% of the subjects had sedentary behavior. The mean EQ-5D values did not change over time. At least one bleeding was reported in 43.7% of the subjects, mostly with sedentary behavior. The PA in the 2 days preceding the bleeding was comparable to the one observed in the overall observational period. Conclusions: The systematic recording of data through a fitness tracker and ePRO app shows that subjects with HA without inhibitors have lower-than-expected PA and that they still experience issues related to bleeding.

2.
Haemophilia ; 30(2): 437-448, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38314918

RESUMO

INTRODUCTION: Considering the advances in haemophilia management and treatment observed in the last decades, a new set of value-based outcome indicators is needed to assess the quality of care and the impact of these medical innovations. AIM: The Value-Based Healthcare in Haemophilia project aimed to define a set of clinical outcome indicators (COIs) and patient-reported outcome indicators (PROIs) to assess quality of care in haemophilia in high-income countries with a value-based approach to inform and guide the decision-making process. METHODS: A Value-based healthcare approach based on the available literature, current guidelines and the involvement of a multidisciplinary group of experts was applied to generate a set of indicators to assess the quality of care of haemophilia. RESULTS: A final list of three COIs and five PROIs was created and validated. The identified COIs focus on two domains: musculoskeletal health and function, and safety. The identified PROIs cover five domains: bleeding frequency, pain, mobility and physical activities, Health-Related Quality of Life and satisfaction. Finally, two composite outcomes, one based on COIs, and one based on PROIs, were proposed as synthetic outcome indicators of quality of care. CONCLUSION: The presented standard set of health outcome indicators provides the basis for harmonised longitudinal and cross-sectional monitoring and comparison. The implementation of this value-based approach would enable a more robust assessment of quality of care in haemophilia, within a framework of continuous treatment improvements with potential added value for patients. Moreover, proposed COIs and PROIs should be reviewed and updated routinely.


Assuntos
Hemofilia A , Humanos , Hemofilia A/tratamento farmacológico , Qualidade de Vida , Estudos Transversais , Cuidados de Saúde Baseados em Valores , Avaliação de Resultados em Cuidados de Saúde
3.
Diagnostics (Basel) ; 13(6)2023 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-36980420

RESUMO

Background and Aim: Double-balloon enteroscopy (DBE) is a well-established procedure for direct visualisation of the entire small bowel mucosa, and, in contrast with other imaging techniques, allows to perform biopsies and therapeutic interventions. The aim of this study was to evaluate the indications, diagnostic yield, therapeutic yield, and complications of DBE in a cohort of consecutive patients according to patients' age. Methods: We conducted a retrospective study of consecutive patients who underwent DBE in our endoscopy unit between January 2006 and December 2021. Results: A total of 387 consecutive patients who underwent 460 DBE procedures were included. Mean age of the patients was 63 years. The overall diagnostic yield was 67.6%; vascular lesions were the predominant endoscopic findings (31.5%), followed by polyps or neoplastic masses (17.6%). Older patients (≥65 years) showed statistically higher rates of clinically relevant findings than adult patients (18-65 years) (p = 0.001). Crohn's disease and polyps or neoplastic masses were more frequent in the younger group (p = 0.009 and p = 0.066, respectively), while vascular lesions and non-specific inflammation were the most common findings in the older group (p < 0.001 and p < 0.001, respectively). The therapeutic intervention rate was 31.7%. Rates of endoscopic treatment were significantly higher in the older group (p < 0.001). Total complications occurred in five procedures (1.1%). Conclusion: In clinical practice, DBE is an efficient diagnostic and therapeutic tool with a high safety profile, particularly in the elderly population.

4.
Haemophilia ; 28(5): 872-884, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35588502

RESUMO

Following the publication of a book of personal memories by one of us (CS1,2 ), we have attempted to synthesis our joint memories of three ageing men, born in the era preceding universal access to treatment, in an attempt to describe our experience, our challenges and our reflections on the development of therapies, which have ensured that our experience of growing up with haemophilia in the 1950s and 1960s has not been mirrored by the current generation of patients. We describe our upbringing in different parts of Europe in health care systems which, while of varying standards, were all unable to offer the kind of care which developed after the development of specific therapies. We assess the effect of the contamination of these therapies by blood-borne pathogens on our own development, and the development of our communities around us. In addition, we reflect on the lessons learnt, sometimes painfully, by our generation of people with haemophilia and how some of these enabled us to overcome substantial hurdles, survive and build productive lives. Finally, we survey the development of therapies in the past 20 years, and offer some reflections on how our experience can be integrated in a realistic expectation of what the future holds for our community, in our own affluent societies and in countries less advantaged economically. We hope that our thoughts may contribute to continued progress in the field of haemophilia care.


Assuntos
Hemofilia A , Atenção à Saúde , Europa (Continente) , Hemofilia A/terapia , Humanos , Masculino , Inquéritos e Questionários , Sobreviventes
5.
Acta Biomed ; 93(1): e2022129, 2022 03 14.
Artigo em Inglês | MEDLINE | ID: mdl-35315416

RESUMO

Background ad aim of workː the position of Italian law regarding participation of prophylactically treated hemophiliacs to organized sport trainings and competitions remains unclear and this study focuses on the eligibility of pediatric patients in particular. Methodsː 16 patients age 3 to 15 years old, with severe haemophilia and prophylaxis starting age of 20,2 ± 2,2 months were enrolled. Weight, height, body mass index (BMI) and joint status (Hemophilia Joint Health Score [HJHS] and Haemophilia Early Arthropathy Detection with UltraSound, HEAD-US score) of patients were evaluated at start (T0) and after 12 months (T12) of a HIITS sport activity program. Resultsː All patients qualified for Italian competitive sport medical certification. Their weight and height increased after 12 months, without an increase in BMI (T0= 17,2; T1= 18,7; p>0,05). HJHS score did not change significantly (T0: 1.6 ± 1; T1: 2.1 ± 1.3; p>0.05). All children were right-handed and atrophy for the muscles of the right elbow significantly decreased (no atrophy seen at T0 in 4 of 16 patients and at T1 in 8 of 16 patients; p=0.045). Conclusionsː Hemophilic children, prophylactically treated, are capable to be included in sport groups and physical activity programs.


Assuntos
Hemofilia A , Artropatias , Adolescente , Certificação , Criança , Pré-Escolar , Diagnóstico Precoce , Hemofilia A/diagnóstico , Hemofilia A/terapia , Humanos , Recém-Nascido , Ultrassonografia
6.
EMBO Rep ; 22(4): e51404, 2021 04 07.
Artigo em Inglês | MEDLINE | ID: mdl-33779029

RESUMO

Status epilepticus (SE) is a condition in which seizures are not self-terminating and thereby pose a serious threat to the patient's life. The molecular mechanisms underlying SE are likely heterogeneous and not well understood. Here, we reveal a role for the RNA-binding protein Fragile X-Related Protein 2 (FXR2P) in SE. Fxr2 KO mice display reduced sensitivity specifically to kainic acid-induced SE. Immunoprecipitation of FXR2P coupled to next-generation sequencing of associated mRNAs shows that FXR2P targets are enriched in genes that encode glutamatergic post-synaptic components. Of note, the FXR2P target transcriptome has a significant overlap with epilepsy and SE risk genes. In addition, Fxr2 KO mice fail to show sustained ERK1/2 phosphorylation induced by KA and present reduced burst activity in the hippocampus. Taken together, our findings show that the absence of FXR2P decreases the expression of glutamatergic proteins, and this decrease might prevent self-sustained seizures.


Assuntos
Ácido Caínico , Estado Epiléptico , Animais , Hipocampo/metabolismo , Ácido Caínico/toxicidade , Camundongos , Camundongos Endogâmicos C57BL , Proteínas de Ligação a RNA/genética , Proteínas de Ligação a RNA/metabolismo , Convulsões/induzido quimicamente , Convulsões/genética , Estado Epiléptico/induzido quimicamente , Estado Epiléptico/genética
8.
Psychol Health Med ; 25(9): 1062-1072, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-31984755

RESUMO

The investigation of mental health among persons with haemophilia is mostly focused on negative and disease-related indicators. Literature however shows that psychosocial resources and optimal daily functioning can co-exist with chronic disease. The Dual Continua Model operationalizes positive mental health as 'flourishing', a condition comprising emotional, psychological, and social well-being dimensions. In the present study physical and mental health were comparatively assessed through positive and negative indicators in adults with haemophilia and a control group. Participants included 84 Italian persons with severe haemophilia (Mage = 43.44; SDage = 13.04) and 164 adults without history of chronic illness (Mage = 40.98; SDage = 12.26), who completed the Short Form Health Survey, the Positive and Negative Affect Schedule, and the Mental Health Continuum Short Form. MANOVA and post-hoc t-tests provided evidence of worse general health, lower negative affect and higher psychological well-being among participants with haemophilia compared with the control group. Moreover, the percentage of flourishing individuals was higher among participants with haemophilia. Results support previous evidence suggesting that a chronic disease does not prevent mental well-being attainment. The identification of assets and strengths allowing people with haemophilia to flourish can be fruitfully used to design resource-centered interventions.


Assuntos
Hemofilia A/psicologia , Saúde Mental , Satisfação Pessoal , Adulto , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
9.
Bull Atmos Sci Technol ; 1(3-4): 263-282, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-38624479

RESUMO

The celebration of the 25th anniversary of the Piedmont flood was organized by the University of Piemonte Orientale in Alessandria, a town that was severely affected in November 1994. It has been an opportunity to reexamine the meteorological event and assess the potential of CNR-ISAC models, after more than 20 years of development, to accurately simulate the heavy precipitation at different lead times. The predictability of this extreme event has been studied on a wide range of space and time scales, from subseasonal to convection resolving, using a variety of model setups and initial conditions. The subseasonal experiment produces a precipitation anomaly that, even if underestimated, indicates some predictability beyond the second forecast week. At shorter ranges, results indicate that there is a consistent improvement in the precipitation forecast going from low-resolution hydrostatic to high-resolution nonhydrostatic models. It is only at very high resolution (500 m) that the convective activity extending to the north of the divide line of the Ligurian Apennines, which was responsible for the flood of the Tanaro River, is predicted with an intensity comparable with rain gauge observations. The main mesoscale phenomena that played a role in the different phases of the event have been also identified.

10.
Patient Relat Outcome Meas ; 10: 243-255, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31616195

RESUMO

BACKGROUND: Sexual health plays a primary role in quality of life (QoL) for many people, including those with hemophilia; however, there is little information available about sexual relationships and satisfaction in patients with hemophilia. METHODS: To address this issue, the Hemophilia Experiences, Results and Opportunities (HERO) and the Bridging Hemophilia B Experiences, Results and Opportunities into Solutions (B-HERO-S) studies included questions from the Male Sexual Health Questionnaire (MSHQ). RESULTS: Although these data were not statistically analyzed for comparisons between the 3 populations (HERO, HERO US only, and B-HERO-S), in general, participants in the HERO survey appeared to be more satisfied with their sexual relationship than participants in the B-HERO-S survey. In addition, many patients, especially those outside the United States, reported that they had not discussed sexual health with their doctor or other members of the hemophilia treatment center team. While the topic of sexual health has been infrequently explored in men with hemophilia, this is the first time it has been investigated in women with hemophilia. CONCLUSION: The results of these studies demonstrate that the impact of hemophilia extends to intimacy and suggest the need for large-scale studies in additional countries to explore further the factors associated with sexual health issues in people with hemophilia.

11.
Ann Gastroenterol ; 30(6): 649-653, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29118559

RESUMO

BACKGROUND: The aim of our study was to test the long-term efficacy of Endo-SPONGE® therapy in a group of patients treated in our center with vacuum-assisted therapy because of anastomotic leakages after colorectal surgery. METHODS: Eleven patients [male: 6; mean age: 71 (range: 44-82) years] who had anastomotic leakage treated with Endo-SPONGE® placement were included in the study. Patient records were examined retrospectively. All patients with documented anastomotic leakage on abdominal computed tomography following an anterior resection of the rectum for rectal cancer underwent sigmoidoscopy to determine the extent of the anastomotic defect and the size of the presacral abscess. RESULTS: Ten of the 11 patients (90.9%) showed closure of the anastomotic leakage after a mean of 16 sponge changes. During follow up [mean: 29 (range: 6-64) months], we observed two cases of anastomotic stricture. Treatment failure was observed in one patient who presented an increased size of dehiscence after 23 sessions of endoscopic treatment, despite an initial good response. CONCLUSIONS: Our study substantially confirms previous conclusions and reaffirms that Endo-SPONGE® treatment for colorectal anastomotic leakages, performed in suitable patients, represents a successful and safe approach. The reduction in wound closure time, mild-to-moderate discomfort and possibly shorter hospitalization suggest that Endo-SPONGE® treatment can be a prominent therapeutic regimen with adequate patient acceptance.

13.
Neuron ; 79(6): 1169-82, 2013 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-24050404

RESUMO

The CYFIP1/SRA1 gene is located in a chromosomal region linked to various neurological disorders, including intellectual disability, autism, and schizophrenia. CYFIP1 plays a dual role in two apparently unrelated processes, inhibiting local protein synthesis and favoring actin remodeling. Here, we show that brain-derived neurotrophic factor (BDNF)-driven synaptic signaling releases CYFIP1 from the translational inhibitory complex, triggering translation of target mRNAs and shifting CYFIP1 into the WAVE regulatory complex. Active Rac1 alters the CYFIP1 conformation, as demonstrated by intramolecular FRET, and is key in changing the equilibrium of the two complexes. CYFIP1 thus orchestrates the two molecular cascades, protein translation and actin polymerization, each of which is necessary for correct spine morphology in neurons. The CYFIP1 interactome reveals many interactors associated with brain disorders, opening new perspectives to define regulatory pathways shared by neurological disabilities characterized by spine dysmorphogenesis.


Assuntos
Espinhas Dendríticas/genética , Proteínas do Tecido Nervoso/metabolismo , Neurônios/ultraestrutura , Biossíntese de Proteínas/genética , RNA Mensageiro/metabolismo , Proteínas Adaptadoras de Transdução de Sinal/química , Proteínas Adaptadoras de Transdução de Sinal/genética , Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Fatores Etários , Aminoquinolinas/farmacologia , Análise de Variância , Animais , Fator Neurotrófico Derivado do Encéfalo/farmacologia , Carbazóis/farmacologia , Células Cultivadas , Córtex Cerebral/citologia , Cromatografia Líquida , Proteínas de Ligação a DNA/metabolismo , Espinhas Dendríticas/efeitos dos fármacos , Espinhas Dendríticas/ultraestrutura , Inibidores Enzimáticos/farmacologia , Proteína do X Frágil da Deficiência Intelectual/genética , Proteína do X Frágil da Deficiência Intelectual/metabolismo , Proteína do X Frágil da Deficiência Intelectual/ultraestrutura , Regulação da Expressão Gênica/genética , Proteínas de Fluorescência Verde/genética , Proteínas de Fluorescência Verde/metabolismo , Humanos , Imunoprecipitação , Técnicas In Vitro , Alcaloides Indólicos/farmacologia , Proteínas Luminescentes/metabolismo , Masculino , Transtornos Mentais/genética , Metanálise como Assunto , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Microscopia Imunoeletrônica , Proteínas do Tecido Nervoso/química , Proteínas do Tecido Nervoso/genética , Proteínas do Tecido Nervoso/ultraestrutura , Neurônios/efeitos dos fármacos , Biossíntese de Proteínas/efeitos dos fármacos , Pirimidinas/farmacologia , Sinaptossomos/efeitos dos fármacos , Sinaptossomos/metabolismo , Sinaptossomos/ultraestrutura , Espectrometria de Massas em Tandem , Fatores de Tempo , Fatores de Transcrição/metabolismo , Transfecção
14.
Nat Neurosci ; 16(4): 449-55, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23434911

RESUMO

Cognitive and motor performances decline during aging. Although it is clear that such signs reflect synaptic compromise, the underlying mechanisms have not been defined. We found that the levels and activity of the synaptic plasticity modulators phosphatidylinositol-(4,5)-bisphosphate (PI(4,5)P2) and phospholipase Cγ (PLCγ) were substantially reduced in hippocampal synaptic membranes from old mice. In addition, these membranes contained reduced levels of the PI(4,5)P2-clustering molecule myristoylated alanine-rich C kinase substrate (MARCKS). Consistent with a cause-effect relationship, raising MARCKS levels in the brain of old mice led to increased synaptic membrane clustering of PI(4,5)P2 and to PLCγ activation. MARCKS overexpression in the hippocampus of old mice or intraventricular perfusion of MARCKS peptide resulted in enhanced long-term potentiation and improved memory. These results reveal one of the mechanisms involved in brain dysfunction during aging.


Assuntos
Envelhecimento/fisiologia , Transtornos Cognitivos/fisiopatologia , Regulação para Baixo/fisiologia , Hipocampo/fisiologia , Peptídeos e Proteínas de Sinalização Intracelular/deficiência , Proteínas de Membrana/deficiência , Fosfatidilinositol 4,5-Difosfato/fisiologia , Envelhecimento/efeitos dos fármacos , Animais , Células Cultivadas , Transtornos Cognitivos/tratamento farmacológico , Hipocampo/efeitos dos fármacos , Infusões Intraventriculares , Peptídeos e Proteínas de Sinalização Intracelular/administração & dosagem , Masculino , Proteínas de Membrana/administração & dosagem , Camundongos , Camundongos Endogâmicos C57BL , Substrato Quinase C Rico em Alanina Miristoilada , Neurônios/efeitos dos fármacos , Neurônios/fisiologia , Técnicas de Cultura de Órgãos , Ratos
15.
Neurobiol Dis ; 47(2): 216-24, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22538221

RESUMO

Unverricht-Lundborg disease (ULD) is the most common progressive myoclonic epilepsy. Its etiology has been identified in a defect of a protease inhibitor, cystatin B (CSTB), but the mechanism(s) by which this defect translates in the clinical manifestations of the disease are still obscure. We tested the hypothesis that ULD is accompanied by a loss of cortical GABA inhibition in a murine model (the CSTB knockout mouse) and in a human case. Cortical GABA signaling has been investigated measuring VGAT immunohistochemistry (a histological marker of the density of GABA terminals), GABA release from synaptosomes and paired-pulse stimulation. In CSTB knockout mice, a progressive decrease in neocortex thickness was found, associated with a prevalent loss of GABA interneurons. A marked reduction in VGAT labeling was found in the cortex of both CSTB knockout mice and an ULD patient. This implicates a reduction in GABA synaptic transmission, which was confirmed in the mouse model as reduction in GABA release from isolated nerve terminals and as loss of electrophysiologically measured GABA inhibition. The alterations in VGAT immunolabeling progressed in time, paralleling the worsening of myoclonus. These results provide direct evidence that loss of cortical GABA input occurs in a relevant animal model and in a case of human ULD, leading to a condition of latent hyperexcitability that favors myoclonus and seizures. These findings contribute to the understanding of the pathogenic mechanism of ULD and of the neurobiological basis of the effect of currently employed drugs.


Assuntos
Córtex Cerebral/patologia , Terminações Pré-Sinápticas/patologia , Síndrome de Unverricht-Lundborg/patologia , Ácido gama-Aminobutírico/deficiência , Adulto , Animais , Córtex Cerebral/metabolismo , Humanos , Masculino , Camundongos , Camundongos da Linhagem 129 , Camundongos Knockout , Pessoa de Meia-Idade , Terminações Pré-Sinápticas/metabolismo , Síndrome de Unverricht-Lundborg/metabolismo
16.
Adv Exp Med Biol ; 970: 517-51, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22351071

RESUMO

The Fragile X syndrome (FXS) is the most frequent form of inherited mental retardation and also considered a monogenic cause of Autism Spectrum Disorder. FXS symptoms include neurodevelopmental delay, anxiety, hyperactivity, and autistic-like behavior. The disease is due to mutations or loss of the Fragile X Mental Retardation Protein (FMRP), an RNA-binding protein abundant in the brain and gonads, the two organs mainly affected in FXS patients. FMRP has multiple functions in RNA metabolism, including mRNA decay, dendritic targeting of mRNAs, and protein synthesis. In neurons lacking FMRP, a wide array of mRNAs encoding proteins involved in synaptic structure and function are altered. As a result of this complex dysregulation, in the absence of FMRP, spine morphology and functioning is impaired. Consistently, model organisms for the study of the syndrome recapitulate the phenotype observed in FXS patients, such as dendritic spine anomalies and defects in learning. Here, we review the fundamentals of genetic and clinical aspects of FXS, devoting a specific attention to ASD comorbidity and FXS-related diseases. We also review the current knowledge on FMRP functions through structural, molecular, and cellular findings. Finally, we discuss the neuroanatomical, electrophysiological, and behavioral defects caused by FMRP loss, as well as the current treatments able to partially revert some of the FXS abnormalities.


Assuntos
Encéfalo/metabolismo , Dendritos/metabolismo , Proteína do X Frágil da Deficiência Intelectual/genética , Síndrome do Cromossomo X Frágil/genética , Gônadas/metabolismo , RNA Mensageiro/genética , Animais , Encéfalo/fisiopatologia , Criança , Dendritos/patologia , Modelos Animais de Doenças , Drosophila melanogaster , Proteína do X Frágil da Deficiência Intelectual/metabolismo , Síndrome do Cromossomo X Frágil/tratamento farmacológico , Síndrome do Cromossomo X Frágil/metabolismo , Síndrome do Cromossomo X Frágil/fisiopatologia , Expressão Gênica , Gônadas/fisiopatologia , Humanos , Masculino , Camundongos , Terapia de Alvo Molecular , Mutação , Fenótipo , Biossíntese de Proteínas , Estabilidade de RNA , Peixe-Zebra
17.
Am J Gastroenterol ; 105(6): 1284-91, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20051943

RESUMO

OBJECTIVES: We sought (i) to validate a new prediction rule of mortality (Progetto Nazionale Emorragia Digestiva (PNED) score) on an independent population with non-variceal upper gastrointestinal bleeding (UGIB) and (ii) to compare the accuracy of the Italian PNED score vs. the Rockall score in predicting the risk of death. METHODS: We conducted prospective validation of analysis of consecutive patients with UGIB at 21 hospitals from 2007 to 2008. Outcome measure was 30-day mortality. All the variables used to calculate the Rockall score as well as those identified in the Italian predictive model were considered. Calibration of the model was tested using the chi2 goodness-of-fit and performance characteristics with receiver operating characteristic (ROC) analysis. The area under the ROC curve (AUC) was used to quantify the diagnostic accuracy of the two predictive models. RESULTS: Over a 16-month period, data on 1,360 patients were entered in a national database and analyzed. Peptic ulcer bleeding was recorded in 60.7% of cases. One or more comorbidities were present in 66% of patients. Endoscopic treatment was delivered in all high-risk patients followed by high-dose intravenous proton pump inhibitor in 95% of them. Sixty-six patients died (mortality 4.85%; 3.54-5.75). The PNED score showed a high discriminant capability and was significantly superior to the Rockall score in predicting the risk of death (AUC 0.81 (0.72-0.90) vs. 0.66 (0.60-0.72), P<0.000). Positive likelihood ratio for mortality in patients with a PNED risk score >8 was 16.05. CONCLUSIONS: The Italian 10-point score for the prediction of death was successfully validated in this independent population of patients with non-variceal gastrointestinal bleeding. The PNED score is accurate and superior to the Rockall score. Further external validation at the international level is needed.


Assuntos
Hemorragia Gastrointestinal/mortalidade , Trato Gastrointestinal Superior , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico
18.
Proc Natl Acad Sci U S A ; 106(17): 7191-6, 2009 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-19366663

RESUMO

A loss of neurons is observed in the hippocampus of many patients with epilepsies of temporal lobe origin. It has been hypothesized that damage limitation or repair, for example using neurotrophic factors (NTFs), may prevent the transformation of a normal tissue into epileptic (epileptogenesis). Here, we used viral vectors to locally supplement two NTFs, fibroblast growth factor-2 (FGF-2) and brain-derived neurotrophic factor (BDNF), when epileptogenic damage was already in place. These vectors were first characterized in vitro, where they increased proliferation of neural progenitors and favored their differentiation into neurons, and they were then tested in a model of status epilepticus-induced neurodegeneration and epileptogenesis. When injected in a lesioned hippocampus, FGF-2/BDNF expressing vectors increased neuronogenesis, embanked neuronal damage, and reduced epileptogenesis. It is concluded that reduction of damage reduces epileptogenesis and that supplementing specific NTFs in lesion areas represents a new approach to the therapy of neuronal damage and of its consequences.


Assuntos
Fator Neurotrófico Derivado do Encéfalo/metabolismo , Epilepsia/genética , Epilepsia/terapia , Fator 2 de Crescimento de Fibroblastos/metabolismo , Convulsões/genética , Convulsões/terapia , Animais , Fator Neurotrófico Derivado do Encéfalo/genética , Proliferação de Células , Epilepsia/metabolismo , Epilepsia/patologia , Fator 2 de Crescimento de Fibroblastos/genética , Terapia Genética , Vetores Genéticos/genética , Masculino , Neurogênese , Ratos , Ratos Sprague-Dawley , Convulsões/metabolismo , Convulsões/patologia , Resultado do Tratamento
19.
J Neurosci ; 28(49): 13112-24, 2008 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-19052202

RESUMO

Fibroblast growth factor 2 (FGF-2) has multiple, pleiotropic effects on the nervous system that include neurogenesis, neuroprotection and neuroplasticity. Thus, alteration in FGF-2 expression patterns may have a profound impact in brain function, both in normal physiology and in pathology. Here, we used FGF-2 transgenic mice (TgFGF2) to study the effects of endogenous FGF-2 overexpression on susceptibility to seizures and to the pathological consequences of seizures. TgFGF2 mice display increased FGF-2 expression in hippocampal pyramidal neurons and dentate granule cells. Increased density of glutamatergic synaptic vesicles was observed in the hippocampus of TgFGF2 mice, and electrophysiological data (input/output curves and patch-clamp recordings in CA1) confirmed an increase in excitatory inputs in CA1, suggesting the presence of a latent hyperexcitability. Indeed, TgFGF2 mice displayed increased susceptibility to kainate-induced seizures compared with wild-type (WT) littermates, in that latency to generalized seizure onset was reduced, whereas behavioral seizure scores and lethality were increased. Finally, WT and TgFGF2 mice with similar seizure scores were used for examining seizure-induced cellular consequences. Neurogenesis and mossy fiber sprouting were not significantly different between the two groups. In contrast, cell damage (assessed with Fluoro-Jade B, silver impregnation and anti-caspase 3 immunohistochemistry) was significantly lower in TgFGF2 mice, especially in the areas of overexpression (CA1 and CA3), indicating reduction of seizure-induced necrosis and apoptosis. These data suggest that FGF-2 may be implicated in seizure susceptibility and in seizure-induced plasticity, exerting different, and apparently contrasting effects: favoring ictogenesis but reducing seizure-induced cell death.


Assuntos
Epilepsia/genética , Fator 2 de Crescimento de Fibroblastos/genética , Predisposição Genética para Doença/genética , Degeneração Neural/genética , Plasticidade Neuronal/genética , Animais , Morte Celular/genética , Convulsivantes/farmacologia , Modelos Animais de Doenças , Epilepsia/metabolismo , Epilepsia/fisiopatologia , Feminino , Ácido Glutâmico/metabolismo , Cones de Crescimento/metabolismo , Cones de Crescimento/ultraestrutura , Hipocampo/citologia , Hipocampo/metabolismo , Hipocampo/fisiopatologia , Humanos , Masculino , Potenciais da Membrana/genética , Camundongos , Camundongos Transgênicos , Degeneração Neural/metabolismo , Degeneração Neural/fisiopatologia , Técnicas de Cultura de Órgãos , Técnicas de Patch-Clamp , Terminações Pré-Sinápticas/metabolismo , Terminações Pré-Sinápticas/ultraestrutura , Células Piramidais/citologia , Células Piramidais/metabolismo , Células Piramidais/fisiopatologia , Vesículas Sinápticas/metabolismo , Vesículas Sinápticas/ultraestrutura
20.
Am J Gastroenterol ; 103(7): 1639-47; quiz 1648, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-18564127

RESUMO

OBJECTIVES: From an Italian Registry of patients with upper gastrointestinal hemorrhage (UGIH), we assessed the clinical outcomes and explored the roles of clinical, endoscopic, and therapeutic factors on 30-day mortality in a real life setting. METHODS: Prospective analysis of consecutive patients endoscoped for UGIH at 23 community and tertiary care institutions from 2003 to 2004. Covariates and outcomes were defined a priori and 30-day follow-up obtained. Logistic regression analysis identified predictors of mortality. RESULTS: One thousand and twenty patients were included. A total of 46 patients died for an overall 4.5% mortality rate. In all, 85% of deaths were associated with one or more major comorbidity. Sixteen of 46 patients (35%) died within the first 24 h of the onset of bleeding. Of these, eight had been categorized as ASA class 1 or 2 and none of them was operated upon, despite a failure of endoscopic intention to treatment in four. Regression analysis showed advanced age, presence of severe comorbidity, low hemoglobin levels at presentation, and worsening health status as the only independent predictors of 30-day mortality (P < 0.001). The acute use of a PPI exerted a protective effect (OR 0.23, 95% CI 0.09-0.73). Recurrent bleeding was low (3.2%). Rebleeders accounted for only 11% of the total patients deceased (OR 3.27, 95% CI 1.5-11.2). CONCLUSIONS: These results indicate that 30-day mortality for nonvariceal bleeding is low. Deaths occurred predominantly in elderly patients with severe comorbidities or those with failure of endoscopic intention to treatment.


Assuntos
Hemorragia Gastrointestinal/mortalidade , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Comorbidade , Endoscopia do Sistema Digestório , Feminino , Nível de Saúde , Hemoglobinas/análise , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Recidiva , Análise de Regressão
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