Background: Several studies on patients with juvenile myoclonic epilepsy (JME) showed widespread white matter (WM) abnormalities in the brain. The aim of this study was to investigate potential structural abnormalities in JME patients (1) compared to healthy controls, (2) among JME subgroups with or without photoparoxysmal responses (PPR), and (3) in correlation with clinical variables.Methods: A selection of 31 patients with JME (12 PPR positive) and 27 age and gender matched healthy controls (HC) were studied at a tertiary epilepsy center. Fractional anisotropy (FA) was calculated and intergroup differences analyzed using Tract Based Spatial Statistics (TBSS).Results: Compared to HC the JME group showed reduced FA widespread and bilateral in the longitudinal fasciculus, inferior fronto-occipital fasciculus, corticospinal tract, anterior and posterior thalamic radiation, corona radiata, corpus callosum, cingulate gyrus and external capsule (p < 0.01). Subgroup analysis revealed no significant differences of WM alterations between PPR positive and negative patients and with clinical and epilepsy-related factors.Conclusions: Widespread microstructural abnormalities among patients with JME have been identified.Prior findings of frontal and thalamofrontal microstructural abnormalities have been confirmed. Additionally, microstructural abnormalities were found in widespread extra-frontal regions that may help to validate pathophysiological concepts of JME.
Lambs were fed diets containing 500 g straw, 50 g sucrose and 30 g minerals per day. The straw was untreated (A), wafered after addition of NaOH (B) or gassed with ammonia. Diets A and B, in addition contained urea, so that equal amounts of dietary N were offered. Digestibility of OM was increased by 12 units after addition of NaOH and by 8 units after gassing with NH3. As significantly more faecal N was excreted in animals fed diet C, it is concluded that N of NH3-treated straw is less available than of added urea. When NaOH-treated straw was fed, renal excretion of phosphorus was increased.
EinfiihrungIn der Tierzuchtung wird gewohnlich nach mehreren Merkmalen selektiert, die in einem Index zusammengefafit werden. Hiiufig sind Informationen uber die einzelnen Merkmale zu unterschiedlichen Zeitpunkten verfugbar, zum Beispiel bei der Prufung von Bullen aus Zweinutzungsrassen, bei denen die Mastleistung aus der Eigenleistungsprufung oder aus der Nachkommenpriifung wesentlich eher vorliegt als die Laktationsleistung der Tochter. Gerade bei Grofitieren ist es sehr kostspielig, alle Priifungstiere bis zum Ende der Prufung zu halten. Vielmehr bietet es sich an, vorzeitig nach Teilleistungen zu selektieren, um einerseits die Kosten pro Prufungstier zu senken, andererseits bei limitierter Prufkapazitat mehr Tiere in die Prufung aufnehmen zu konnen.Exakte Kalkulationen mit einer solchen mehrstufigen Selektion sind in der Tierzuchtung bisher kaum durchgefuhrt worden. I n der Pflanzenzuchtung dagegen ist in grofierem Umfang mit der Mehrstufenselektion gearbeitet worden, und auch in der Drogenprufung der pharmazeutischen Industrie gibt es Mehrstufenplane.Ziel dieser Untersuchung war es, verschiedene Modelle der Mehrstufenselektion fur die Selektion des Gottinger Minischweines auf geringere Korpergrofie und verbesserte Aufzuchtleistung zu entwickeln und in ihrer Leistungsfahigkeit zu vergleichen.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.