Liisa Muukkonen1,2, Jonna Männistö3,4, Jarmo Jääskeläinen3,4, Riitta Hannonen5,6, Hanna Huopio3. 1. Department of Child Neurology, Siun sote North Karelia Central Hospital, Joensuu, Finland. 2. Coronaria Tietotaito, Joensuu, Finland. 3. Department of Paediatrics, Kuopio University Hospital, Kuopio, Finland. 4. Department of Paediatrics, University of Eastern Finland, Kuopio, Finland. 5. Department of Psychology, Carea - Kymenlaakso Social and Health Services, Kotka, Finland. 6. Department of Psychology, University of Jyväskylä, Jyväskylä, Finland.
Abstract
AIM: To examine the hypoglycaemic effect on neurodevelopmental outcome in patients with transient and persistent congenital hyperinsulinism (CHI) born in the 21st century. METHOD: A cohort of 117 patients (66 males, 51 females) with CHI aged 5 to 16 years (mean age 8y 11mo, SD 2y 7mo) were selected from a Finnish nationwide registry to examine all the patients with similar methods. Neurodevelopment was first evaluated retrospectively. The 83 patients with no risk factors for neurological impairment other than hypoglycaemia were recruited and 44 participated (24 males, 20 females; mean age 9y 7mo, SD 3y 1mo) in neuropsychological assessment with the Wechsler Intelligence Scale for Children, Fourth Edition and the Finnish version of the Developmental Neuropsychological Assessment, Second Edition domains of attention, language, memory, sensorimotor, and visual functioning. RESULTS: In retrospective analysis, transient and persistent CHI groups had similar prevalences of mild (22% and 18% respectively) or severe (5% and 7% respectively) neurodevelopmental difficulties. In clinical assessment, the neurocognitive profile was within the average range in both groups, but children with persistent CHI showed significant but restricted deficits in attention, memory, visual, and sensorimotor functions compared with the general population. The transient CHI group did not differ from the standardization samples. INTERPRETATION: Besides the more apparent broader neurological deficits, children with persistent CHI have an increased risk for milder specific neurocognitive problems, which should be considered in the follow-up. WHAT THIS PAPER ADDS: Children with persistent congenital hyperinsulinism showed deficits in attention, memory, visual, and sensorimotor functions. The deficits were potentially of hypoglycaemic origin. Children with transient hyperinsulinism did not differ from the general population.
AIM: To examine the hypoglycaemic effect on neurodevelopmental outcome in patients with transient and persistent congenital hyperinsulinism (CHI) born in the 21st century. METHOD: A cohort of 117 patients (66 males, 51 females) with CHI aged 5 to 16 years (mean age 8y 11mo, SD 2y 7mo) were selected from a Finnish nationwide registry to examine all the patients with similar methods. Neurodevelopment was first evaluated retrospectively. The 83 patients with no risk factors for neurological impairment other than hypoglycaemia were recruited and 44 participated (24 males, 20 females; mean age 9y 7mo, SD 3y 1mo) in neuropsychological assessment with the Wechsler Intelligence Scale for Children, Fourth Edition and the Finnish version of the Developmental Neuropsychological Assessment, Second Edition domains of attention, language, memory, sensorimotor, and visual functioning. RESULTS: In retrospective analysis, transient and persistent CHI groups had similar prevalences of mild (22% and 18% respectively) or severe (5% and 7% respectively) neurodevelopmental difficulties. In clinical assessment, the neurocognitive profile was within the average range in both groups, but children with persistent CHI showed significant but restricted deficits in attention, memory, visual, and sensorimotor functions compared with the general population. The transient CHI group did not differ from the standardization samples. INTERPRETATION: Besides the more apparent broader neurological deficits, children with persistent CHI have an increased risk for milder specific neurocognitive problems, which should be considered in the follow-up. WHAT THIS PAPER ADDS: Children with persistent congenital hyperinsulinism showed deficits in attention, memory, visual, and sensorimotor functions. The deficits were potentially of hypoglycaemic origin. Children with transient hyperinsulinism did not differ from the general population.
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