Publications by authors named "Philippe-A Lysy"

Partial remission (PR) occurs in only half of people with new-onset type 1 diabetes (T1D) and corresponds to a transient period characterized by low daily insulin needs, low glycemic fluctuations and increased endogenous insulin secretion. While identification of people with newly-onset T1D and significant residual beta-cell function may foster patient-specific interventions, reliable predictive biomarkers of PR occurrence currently lack. We analyzed the plasma of children with new-onset T1D to identify biomarkers present at diagnosis that predicted PR at 3 months post-diagnosis.

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Aims: New-onset type 1 diabetes mellitus (T1D) in pediatric patients represents a clinical challenge for initial total daily insulin dosing (TIDD) due to substantial heterogeneity in practice and lack of consensus on the optimal starting dose. Our INSENODIAB (INsulin SEnsitivity in New Onset type 1 DIABetes) study is aimed at (1) exploring the influence of patient-specific characteristics on insulin requirements in pediatric patients with new-onset T1D; (2) constructing a predictive model for the recommended TIDD tailored to individual patient profiles; and (3) assessing potential associations between TIDD and patient outcomes at follow-up intervals of 3 and 12 months.

Methods: We conducted a comprehensive analysis of medical records for children aged 6 months to 18 years, hospitalized for new-onset T1D from 2013 to 2022.

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Backgruound: Recent diabetes subclassifications have improved the differentiation between patients with type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus despite several overlapping features, yet without considering genetic forms of diabetes. We sought to facilitate the identification of monogenic diabetes by creating a new tool that we validated in a pediatric maturity-onset diabetes of the young (MODY) cohort.

Methods: We first created the DIAgnose MOnogenic DIAbetes (DIAMODIA) criteria based on the pre-existing, but incomplete, MODY calculator.

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Introduction A variable near adult height (NAH) outcome after growth hormone (GH) therapy in Noonan syndrome (NS) patients with short stature has been reported. The main objective of this study was to evaluate NAH and body mass index (BMI) evolution in a large Belgian cohort of NS patients treated for short stature. The secondary objectives were to investigate whether sex, genotype, the presence of a thoracic deformity and/or a heart anomaly might affect NAH and to validate the recently developed NAH prediction model by Ranke et al.

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Aims: To evaluate whether parameters of post-hypoglycemic hyperglycemia (PHH) correlated with glucose homeostasis during the first year after type 1 diabetes onset and helped to distinguish pediatric patients undergoing partial remission or not.

Methods: In the GLUREDIA (GLUcagon Response to hypoglycemia in children and adolescents with new-onset type 1 DIAbetes) study, longitudinal values of clinical parameters, continuous glucose monitoring metrics and residual β-cell secretion from children with new-onset type 1 diabetes were analyzed during the first year after disease onset. PHH parameters were calculated using an in-house algorithm.

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Introduction: Von Hippel Lindau (VHL) syndrome is caused by an autosomal dominant hereditary or sporadic germline mutation of the gene with more than five hundred pathogenic mutations identified. Pheochromocytomas and rarely paragangliomas occur in 10-50% of patients with VHL syndrome usually around 30 years of age and exceptionally before the age of 10.

Case Presentation: We diagnosed a 9-year-old girl of normal appearance and severe refractory hypertension, with a norepinephrine-secreting pheochromocytoma related to VHL syndrome due to a known familial germline heterozygous mutation of gene (c.

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Kabuki syndrome is a congenital condition characterized by a set of facial dysmorphic features that often help the clinician to suspect the diagnosis. However, more insidious symptoms can rarely occur, such as manifestations of hypoglycemia in newborns with congenital hyperinsulinism hypoglycemia, especially when a variant of the gene is found. In those cases, a treatment with diazoxide can be started and can be replaced with lanreotide if a satisfying glycemic control is not achieved.

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Article Synopsis
  • Hyperglycemia (HG) and prediabetes are often overlooked in children undergoing liver (LT) and renal (RT) transplants, yet they increase the risk for diabetes and heart disease, prompting the DIABGRAFT study to analyze these conditions.
  • The study included a retrospective analysis of 195 LT and 20 RT patients, revealing that 25% of LT and 35% of RT patients experienced transient HG, with 20% of RT patients developing diabetes, often linked to glucocorticoid use and complications like infection.
  • Additionally, while standard blood tests for diabetes markers showed normal results, more sensitive measures indicated insulin resistance and impaired glucose tolerance, highlighting the importance of monitoring glycemic levels immediately after transplant
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Article Synopsis
  • The study aimed to evaluate how partial remission (PR) affects glycemic control in children with type 1 diabetes mellitus (T1DM) over time.
  • Researchers analyzed data from 189 pediatric patients, categorizing them by remission status and the duration of their PR.
  • Results indicated that patients experiencing PR had better glycemic control shortly after PR, with longer durations of PR leading to even greater improvements in key metrics like HbA levels, time in range, and reduced glycemic variability.
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Objective: Real-time continuous glucose monitoring (RT-CGM) can improve metabolic control and quality of life (QoL), but long-term real-world data in children with type 1 diabetes (T1D) are scarce. Over a period of 24 months, we assessed the impact of RT-CGM reimbursement on glycemic control and QoL in children/adolescents with T1D treated with insulin pumps.

Research Design And Methods: We conducted a multicenter prospective observational study.

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Objective: To evaluate whether indexes of glycemic variability may overcome residual β-cell secretion estimates in the longitudinal evaluation of partial remission in a cohort of pediatric patients with new-onset type 1 diabetes.

Research Design And Methods: Values of residual β-cell secretion estimates, clinical parameters (e.g.

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Article Synopsis
  • The study explored how hypoglycemia recovery impacts cardiovascular risk in pediatric patients with type 1 diabetes (T1D) by examining post-hypoglycemic hyperglycemia (PHH).
  • Researchers analyzed data from 142 patients over two months, finding a daily PHH rate of 0.6 episodes, with significant correlations to hyperglycemia rates and other glycemic variability parameters.
  • Key findings indicated that younger age and lower BMI were linked to higher PHH rates, while older and obese patients tended to experience longer PHH episodes with higher blood sugar peaks.
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  • A study focused on children and adolescents with leukemia and lymphoma was conducted to identify the incidence and risk factors for hyperglycemia, which is often overlooked in this group.
  • Data from 267 patients was analyzed, revealing that 18% of those with acute lymphoblastic leukemia (ALL) and 17% with non-Hodgkin's lymphoma (NHL) experienced hyperglycemia shortly after starting treatment, mostly within the first month.
  • Key risk factors for hyperglycemia in ALL patients included being overweight or obese, entering puberty, having steroid-resistant disease, and undergoing hematopoietic stem cell transplants, indicating the need for careful monitoring in these cases.
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Objectives: To evaluate the evolution of subcutaneous glucose during two sessions of monitored aerobic exercise in children or adolescents with type 1 diabetes after adaptation of insulin doses and carbohydrate intake according to a combined algorithm.

Methods: Twelve patients with type 1 diabetes (15.1 ± 2 years; diabetes duration: 9.

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Indications and administration of intra-amniotic infusions of L-thyroxine in the context of non-immune fetal hypothyroidism with goiter lack of standardization. Systematic follow-up of clinical features related to thyroid hormonal homeostasis may be useful to evaluate their efficiency and develop standardized management guidelines.

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Article Synopsis
  • Amiodarone, a drug used to treat arrhythmias, can cause thyroid dysfunction in children, similar to what has been observed in adults, with potential for long-lasting neurodevelopmental issues.
  • In a study of 152 children, 23% experienced thyroid dysfunction, with hypothyroidism occurring more frequently than thyrotoxicosis, particularly among older children receiving higher dosages and longer treatment.
  • The findings stress the need for careful monitoring of thyroid function in children on amiodarone, especially those with higher risk factors, to manage complications effectively.
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While the autoimmune character of T1D (type 1 diabetes) is being challenged, it is currently recognized that inflammation plays a key role in its development. We hypothesized that glucotoxicity could contribute to -cell mass destruction through participation in islet inflammation. We evaluated the potential of empagliflozin (EMPA) and GABA (gamma-aminobutyric acid) to protect -cell mass against glucotoxicity and to increase -cell mass after diagnosis of T1D.

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Aims: We performed a systematic review of clinical trials investigating the health benefits of physical activity in pediatric patients with type 1 diabetes.

Methods: To perform this systematic review, search strategies were created and adapted to four databases. Only randomized controlled trials written in English before 1998 and that answered to the PICOS criteria were included.

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Adrenal insufficiency is defined as impaired adrenocortical hormone synthesis. According to its source, the deficit is classified as primary (adrenal steroidogenesis impairment), secondary (pituitary adrenocorticotropic hormone deficit) or tertiary (hypothalamic corticotropin-releasing hormone deficit). The management of adrenal insufficiency resides primarily in physiological replacement of glucocorticoid secretion.

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Cushing syndrome (CS) is a rare disease in children, frequently associated with subtle or periodic symptoms that may delay its diagnosis. Weight gain and growth failure, the hallmarks of hypercortisolism in pediatrics, may be inconsistent, especially in ACTH-independent forms of CS. Primary pigmented nodular adrenocortical disease (PPNAD) is the rarest form of ACTH-independent CS, and can be associated with endocrine and nonendocrine tumors, forming the Carney complex (CNC).

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Although different criteria were used to define partial remission in type 1 diabetes, the IDAA1C formula has prevailed as it correlates with stimulated C-peptide levels. Our retrospective study evaluated clinical variables associated with the occurrence of IDAA1C-defined partial remission in a series of 239 pediatric patients. Diabetic ketoacidosis and age at diagnosis, but no other clinical feature, influenced the occurrence of remission.

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Background: The aim of our study was to determine the influence of routine ketone monitoring on hyperglycemic events (HE) and ketosis in youngsters with type 1 diabetes (T1D).

Methods: Our single-site, controlled and randomized study was conducted on children and adolescents with T1D outside of remission phase. During two crossover periods of 6 months, patients ( = 22) experiencing HE tested ketones alternatively with a blood ketone meter or urine ketone test strips and gave their opinion on screening methods after completion of clinical trial.

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Thorough research on the capacity of human islet transplantation to cure type 1 diabetes led to the achievement of 3- to 5-year-long insulin independence in nearly half of transplanted patients. Yet, translation of this technique to clinical routine is limited by organ shortage and the need for long-term immunosuppression, restricting its use to adults with unstable disease. The production of new bona fide β cells in vitro was thus investigated and finally achieved with human pluripotent stem cells (PSCs).

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Unlabelled: : β-Cell replacement therapy represents the most promising approach to restore β-cell mass and glucose homeostasis in patients with type 1 diabetes. Safety and ethical issues associated with pluripotent stem cells stimulated the search for adult progenitor cells with endocrine differentiation capacities. We have already described a model for expansion and differentiation of human pancreatic duct-derived cells (HDDCs) into insulin-producing cells.

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