Patients with Ectopic Posterior Pituitary: Report of Six Cases

WOS:000627743000006Objective: Ectopic posterior pituitary (EPP) can occur because of a migration defect or neurodegeneration of the hypothalamic nuclei. EPP is typically rarely diagnosed. Therefore, we aimed to report our patients with EPP. Material and Methods: This is a retrospective study (approved by the Ege University Ethical Committee, protocol 20-7T/49) that included 6 patients with EPP who were followed up between 2012 and 2019. We collected information on age, sex, height, weight, body mass index, age at the diagnosis, history of traumatic delivery, consanguinity, multiple hormone deficiency and treatment. We examined laboratory levels and medical records, and, magnetic resonance imaging (MRI) reports. Results: The mean age of patients was 25.83 years, and the age at diagnosis was 11.16 years. One patient was female, and the others were male. They were receiving hormone replacement treatment. The patients were diagnosed with EPP during their childhood. All patients, except 2, were taking growth hormone replacement therapy. Only one patient had a history of consanguinity. Additional information about the patients is described in the patient sections. Conclusion: Patients with EPP are rarely seen, and this rare condition should be considered when a patient has panhypopituitarism. MRI is the gold standard imaging modality for hypophysis to identify this condition. in addition, patients who have EPP in MRI should be screened for hypopituitarism

A transcranial magnetic stimulation study for the characterization of corticospinal pathway plasticity in children with neurological disorders

We aimed to investigate cortical and radicular TMS-evoked motor evoked potentials (MEPs) in children with neurological disorders (n = 57, mean age: 5.45 years) and agematched healthy controls (n = 46). Four TMS parameters were analyzed: MEP amplitudes, the latencies of MEP, the latency jump (cortical MEP latency at rest - cortical active-MEP latency at with slightly contracted targeted muscle), and central motor conduction time. Children with neurological disorders were categorized according to the two major types of neuronal plasticity; excessive plasticity: 29 children with cerebral palsy and impaired plasticity: 28 children with neurodegenerative diseases, stroke, and central nervous system infections. The active-MEP abnormalities (absent and prolonged latencies) were correlated with the location of cortical involvement on MRI patterns. We obtained a significantly increased rate of abnormal cortical activeMEPs in children with impaired plasticity (21/28, 75%) compared with excessive plasticity (18/29, 62%). The rate of absent MEP response is three times more in children with impaired plasticity (43%) than in children with excessive plasticity (14%). A more reduced latency jump was measured in children with impaired plasticity compared to children with excessive plasticity. TMS-evoked active-MEPs and latency jumping are valuable parameters for characterizing neuronal plasticity in children with neurological disorders. (c) 2021 Published by Elsevier Ltd

Abnormal white matter integrity and impairment of cognitive abilities in adolescent inhalant abusers

WOS: 000348955000010PubMed ID: 25479538Inhalant abuse represents a major health problem especially among adolescents and young adults. However, less is known about white matter (WM) microstructure in adolescent inhalant abusers. In the present study, we used diffusion tensor imaging (DTI) to study WM changes in adolescent inhalant abusers compared with healthy controls. We also tested whether there was any relationship between WM integrity and neuropsychological measures in adolescent inhalant abusers. The study included 19 adolescent inhalant abusers and 19 healthy control subjects. Whole brain analysis of WM microstructure was performed using tract-based spatial statistics (TBSS) to detect abnormal WM regions between groups. Wisconsin card sorting test (WCST) and Stroop test were used to measure neuropsychological performance. We found that adolescent inhalant abuser group had significantly higher axial diffusivity (AD) values in left parietal, occipital and temporal WM than in healthy control group. Inhalant abuser and control groups did not differ significantly on fractional anisotropy (FA) and radial diffusivity (RD) values. Adolescent inhalant abusers showed worse performance when compared with control group in WCST and Stroop test. There was no significant correlation of AD values in significant clusters with neuropsychological test performances within the two groups. We only found discrete impairments in neuropsychological test performance and WM integrity in adolescent inhalant abusers compared with healthy control subjects and we were not able to demonstrate a direct correlation between WM alterations and neurocognitive performance. Future work is required to longitudinally evaluate brain abnormalities through methods assessing brain structure, function and connectivity. (C) 2014 Elsevier Inc. All rights reserved.Ege University Science and Technology Application and Research CenterEge University [09/EGEBAM/001]This research was funded by Ege University Science and Technology Application and Research Center (grant number 09/EGEBAM/001) which had no role in the design of the study, collection and analysis of data and decision to publish

Can strict volume control be the key for treatment and prevention of posterior reversible encephalopathy syndrome in hemodialysis patients?

WOS: 000313751100014PubMed ID: 22360471Posterior reversible encephalopathy syndrome (PRES) is a rare but if diagnosed late an irreversible disease. The majority of the patients present with severe hypertension, and effective blood pressure control is the mainstay of therapy. In this case report, we present three cases with PRES, treated successfully with strict volume control policy and propose that strict volume control policy may be a key element for the treatment of PRES