Browsing by Author "Lopes, Ana Isabel"
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- Discrepancies in perceptions of well-being: comparing parental and pediatric PROMIS-patient-reported outcomes in Crohn’s diseasePublication . Azevedo, Sara; Oliveira, Maria Miguel; Nogueira, Paulo Jorge; Lopes, Ana IsabelBackground: This study aims to evaluate and compare the perspectives of pediatric Crohn's disease (CD) patients and their parents/caregivers concerning global physical, emotional, and social health as well as health-related quality of life (HRQQL), using both the Patient-Reported Outcomes Measurement Information System (PROMIS) and the IMPACT III questionnaire. Methods: In a cross-sectional study, 31 dyads of pediatric CD patients (aged 8-17 years) and their parents/caregivers were recruited from an outpatient Pediatric Gastroenterology Center. Participants completed PROMIS (Global Health, Depressive Symptoms, Anxiety, Meaning and Purpose Pain Interference Life Satisfaction, Peer Relationships, Physical Activity and Fatigue) and IMPACT III measures. Comparative analyses using t-tests and multivariate analyses assessed the impact of demographic factors on score differences. Cohen's Kappa analysis evaluated the alignment between parent and child perceptions of disease status. Results: The sample comprised 58% females with a mean age of 15.2 (± 2) years and a mean disease duration of 2.7 (± 2.7) years. Most patients were in disease remission (83.9%) and perceived their disease as better or unchanged in the past 6 months. Concerning PROMIS scores, parents reported significantly lower global health scores (p < 0.001) and higher meaning and purpose scores (p = 0.029) compared to their children. Parental education and professional status significantly influenced PROMIS score differences. Specifically, mothers with specialized professions showed smaller differences in PROMIS depression and pain interference, although greater differences in PROMIS meaning and purpose, as compared to their respective children's scores. Fathers with specialized professions demonstrated greater differences in PROMIS anxiety scores but smaller differences in PROMIS life satisfaction scores. A significant misalignment between parent and child subjective perceptions of disease status was observed (p = 0.004), suggesting that parents may overestimate symptom severity or underestimate improvements compared to their children's experiences. Conclusion: This study highlights the importance of integrating patient and parental perspectives in the clinical management of pediatric CD. The observed discrepancies in disease-related perceptions, influenced by parental educational and professional background, underscore the need for comprehensive assessments to ensure accurate, patient-centered care. For broader generalization, further research should explore these dynamics in newly diagnosed and hospitalized patients.
- Identification of a novel deletion in UDP-glucuronosyltransferase gene in a patient with Crigler-Najjar syndrome type IPublication . Costa, Elisio; Vieira, Emilia; dos Santos, Rosario; Lopes, Ana Isabel; Saldanha, Maria Joana; Brites, Dora
- Neonatal cholestasis : development of a diagnostic decision algorithm from multivariate predictive modelsPublication . Santos Silva, Ermelinda; Moreira Silva, Helena; Catarino, Cristina; Dias, Cláudia Camila; Santos Silva, Alice; Lopes, Ana IsabelDespite the recent advances involving molecular studies, the neonatal cholestasis (NC) diagnosis still relays on the expertise of medical teams. Our aim was to develop models of etiological diagnosis and unfavourable prognosis which may support a rationale diagnostic approach. We retrospectively analysed 154 patients born between January 1985 and October 2019. The cohort was divided into two main groups: (A) transient cholestasis and (B) other diagnosis (with subgroups) and also in two groups of outcomes: (I) unfavourable and (II) favourable. Multivariate logistic regression analysis identified the lower gestational age as the only variable independently associated with an increased risk of transient cholestasis and signs and/or symptoms of sepsis with infectious or metabolic diseases. Gamma-glutamyl transferase serum levels > 300 IU/L had a positive predictive value for both diagnosis of biliary atresia and for alpha-1-antitrypsin deficiency (A1ATD) and for unfavourable prognosis. A model of diagnosis for A1ATD (n = 34) showed an area under the ROC curve = 0.843 [confidence interval (CI): 0.773-0.912].Conclusion: This study identified some predictors of diagnosis and prognosis which helped to build a diagnostic decision algorithm. The unusually large subgroup of patients with A1ATD in this cohort emphasizes its predictive diagnostic model. What Is Known • The etiological diagnosis of neonatal cholestasis (NC) requires a step-by-step guided approach, and diagnostic models have been developed only for biliary atresia. • Current algorithms neither address the epidemiology changes nor the application of the new molecular diagnostic tools. What Is New • This study provides diagnostic predictive models for patients with A1ATD, metabolic/infectious diseases, and transient cholestasis, and two models of unfavourable prognosis for NC. • A diagnostic decision algorithm is proposed based on this study, authors expertise and the literature.
- Phase I/II trial of liver–derived mesenchymal stem cells in pediatric liver–based metabolic disorders : a prospective, open label, multicenter, partially randomized, safety study of one cycle of heterologous human adult liver–derived progenitor cells (HepaStem) in urea cycle disorders and Crigler-Najjar syndrome patientsPublication . Smets, Françoise; Dobbelaere, Dries; McKiernan, Patrick; Dionisi-Vici, Carlo; Broué, Pierre; Jacquemin, Emmanuel; Lopes, Ana Isabel; Gonçalves, Isabel; Mandel, Hanna; Pawlowska, Joanna; Kamińska, Diana; Shteyer, Eyal; Torre, Giuliano; Shapiro, Riki; Eyskens, François; Clapuyt, Philippe; Gissen, Paul; Pariente, Danièle; Grunewald, Stephanie; Yudkoff, Marc; Binda, Maria Mercedes; Najimi, Mustapha; Belmonte, Nathalie; de Vos, Beatrice; Thonnard, Joelle; Sokal, EtienneRegenerative medicine using stem cell technology is an emerging field that is currently tested for inborn and acquired liver diseases. Objective. This phase I/II prospective, open label, multicenter, randomized trial aimed primarily at evaluating the safety of Heterologous Human Adult Liver–derived Progenitor Cells (HepaStem) in pediatric patients with urea cycle disorders (UCDs) or Crigler-Najjar (CN) syndrome 6 months posttransplantation. The secondary objective included the assessment of safety up to 12 months postinfusion and of preliminary efficacy. Methods. Fourteen patients with UCDs and 6 with CN syndrome were divided into 3 cohorts by body weight and intraportally infused with 3 doses of HepaStem. Clinical status, portal vein hemodynamics, morphology of the liver, de novo detection of circulating anti– human leukocyte antigen antibodies, and clinically significant adverse events (AEs) and serious adverse events to infusion were evaluated by using an intent-to-treat analysis. Results. The overall safety of HepaStem was confirmed. For the entire study period, patient-month incidence rate was 1.76 for the AEs and 0.21 for the serious adverse events, of which 38% occurred within 1 month postinfusion. There was a trend of higher events in UCD as compared with CN patients. Segmental left portal vein thrombosis occurred in 1 patient and intraluminal local transient thrombus in a second patient. The other AEs were in line with expectations for catheter placement, cell infusion, concomitant medications, age, and underlying diseases. Conclusions. This study led to European clinical trial authorization for a phase II study in a homogeneous patient cohort, with repeated infusions and intermediate doses.