PMID- 25802930 OWN - NLM STAT- MEDLINE DCOM- 20150615 LR - 20220129 IS - 1528-1167 (Electronic) IS - 0013-9580 (Print) IS - 0013-9580 (Linking) VI - 56 IP - 4 DP - 2015 Apr TI - Quantitative magnetic resonance imaging evidence for altered structural remodeling of the temporal lobe in West syndrome. PG - 608-16 LID - 10.1111/epi.12907 [doi] AB - OBJECTIVE: To explore the structure-function relation of the temporal lobe in newly diagnosed West syndrome of unknown cause (uWS). METHODS: Quantitative magnetic resonance imaging (three-dimensional [3D] structural MRI and diffusion tensor imaging [DTI]) was analyzed using voxel-based morphometry (VBM) and tract-based spatial statistics (TBSS) in 22 patients and healthy age-matched controls. The electrophysiologic responsiveness of the temporal lobe was measured using the N100 auditory event-related potential (aERP) to a repeated 1,000 Hz tone. Neurocognitive function was assessed using the Bayley Scales of Infant Development, Second Edition (BSID-II). Tests followed first-line treatment with vigabatrin (17 patients) or high-dose oral prednisolone (5 patients). RESULTS: Total temporal lobe volume was similar in patients and controls. Patients had a smaller temporal stem (TS) (p < 0.0001) and planum temporale (PT) (p = 0.029) bilaterally. TS width asymmetry with a larger right-sided width in controls was absent in patients (p = 0.033). PT asymmetry was present in both groups, being larger on the right (p = 0.048). VBM gray matter volume was increased at the left temporal lobe (superior and middle temporal gyri, the peri-rhinal cortex, and medial temporal lobe) (p < 0.005, family wise error-corrected). VBM gray matter volume correlated with the duration of infantile spasms (Pearson's r = -0.630, p = 0.009). DTI metrics did not differ between patients and controls on TBSS. Mean BSID-II scores were lower (p < 0.001) and auditory N100 ERP attenuated less in patients than in controls (p = 0.002). SIGNIFICANCE: The functional networking and white matter development of the temporal lobe are impaired following infantile spasms. Treatment may promote structural plasticity within the temporal lobe following infantile spasms, manifest as increased gray matter volume on VBM. It remains to be investigated further whether this predicts patients' long-term cognitive difficulties. CI - (c) 2015 The Authors. Epilepsia published by Wiley Periodicals, Inc. on behalf of International League Against Epilepsy. FAU - Fosi, Tangunu AU - Fosi T AD - Young Epilepsy, Surrey, United Kingdom; Department of Clinical Neurophysiology, Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom; Neurosciences Unit, University College London Institute of Child Health, London, United Kingdom. FAU - Chu, Carlton AU - Chu C FAU - Chong, Wui Khean AU - Chong WK FAU - Clark, Chris AU - Clark C FAU - Scott, Rod C AU - Scott RC FAU - Boyd, Stewart AU - Boyd S FAU - De Haan, Michelle AU - De Haan M FAU - Neville, Brian AU - Neville B LA - eng GR - G1002276/MRC_/Medical Research Council/United Kingdom GR - Department of Health/United Kingdom PT - Journal Article PT - Multicenter Study PT - Observational Study PT - Research Support, Non-U.S. Gov't DEP - 20150302 PL - United States TA - Epilepsia JT - Epilepsia JID - 2983306R SB - IM MH - Child, Preschool MH - Female MH - Humans MH - Infant MH - Magnetic Resonance Imaging/*methods MH - Male MH - Prospective Studies MH - Registries MH - Spasms, Infantile/*diagnosis/*genetics/metabolism MH - Temporal Lobe/metabolism/*pathology PMC - PMC5006860 OTO - NOTNLM OT - Auditory event-related potential OT - Quantitative magnetic resonance imaging OT - Temporal lobe OT - West syndrome EDAT- 2015/03/25 06:00 MHDA- 2015/06/16 06:00 PMCR- 2016/08/31 CRDT- 2015/03/25 06:00 PHST- 2014/11/30 00:00 [accepted] PHST- 2015/03/25 06:00 [entrez] PHST- 2015/03/25 06:00 [pubmed] PHST- 2015/06/16 06:00 [medline] PHST- 2016/08/31 00:00 [pmc-release] AID - EPI12907 [pii] AID - 10.1111/epi.12907 [doi] PST - ppublish SO - Epilepsia. 2015 Apr;56(4):608-16. doi: 10.1111/epi.12907. Epub 2015 Mar 2.