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Mariscal MG, Berry-Kravis E, Buxbaum JD, Ethridge LE, Filip-Dhima R, Foss-Feig JH, Kolevzon A, Modi ME, Mosconi MW, Nelson CA, Powell CM, Siper PM, Soorya L, Thaliath A, Thurm A, Zhang B, Sahin M, Levin AR. Shifted phase of EEG cross-frequency coupling in individuals with Phelan-McDermid syndrome. Mol Autism 2021; 12:29. [PMID: 33910615 PMCID: PMC8082621 DOI: 10.1186/s13229-020-00411-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 12/28/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Phelan-McDermid Syndrome (PMS) is a rare condition caused by deletion or mutation of the SHANK3 gene. Individuals with PMS frequently present with intellectual disability, autism spectrum disorder, and other neurodevelopmental challenges. Electroencephalography (EEG) can provide a window into network-level function in PMS. METHODS Here, we analyze EEG data collected across multiple sites in individuals with PMS (n = 26) and typically developing individuals (n = 15). We quantify oscillatory power, alpha-gamma phase-amplitude coupling strength, and phase bias, a measure of the phase of cross frequency coupling thought to reflect the balance of feedforward (bottom-up) and feedback (top-down) activity. RESULTS We find individuals with PMS display increased alpha-gamma phase bias (U = 3.841, p < 0.0005), predominantly over posterior electrodes. Most individuals with PMS demonstrate positive overall phase bias while most typically developing individuals demonstrate negative overall phase bias. Among individuals with PMS, strength of alpha-gamma phase-amplitude coupling was associated with Sameness, Ritualistic, and Compulsive behaviors as measured by the Repetitive Behavior Scales-Revised (Beta = 0.545, p = 0.011). CONCLUSIONS Increased phase bias suggests potential circuit-level mechanisms underlying phenotype in PMS, offering opportunities for back-translation of findings into animal models and targeting in clinical trials.
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Affiliation(s)
| | - Elizabeth Berry-Kravis
- Department of Pediatrics, Rush University Medical Center, Chicago, IL, USA
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA
- Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA
| | - Joseph D Buxbaum
- Seaver Autism Center, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Genetics and Genomic Sciences, Mount Sinai School of Medicine, New York, NY, USA
- Department of Neuroscience, Mount Sinai School of Medicine, New York, NY, USA
| | - Lauren E Ethridge
- Department of Pediatrics, University of Oklahoma Health Science Center, Oklahoma City, OK, USA
| | - Rajna Filip-Dhima
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - Jennifer H Foss-Feig
- Seaver Autism Center, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Alexander Kolevzon
- Seaver Autism Center, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Meera E Modi
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - Matthew W Mosconi
- Clinical Child Psychology Program, Schiefelbusch Institute for Life Span Studies, University of Kansas, Lawrence, KS, USA
| | - Charles A Nelson
- Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA
| | - Craig M Powell
- Department of Neurobiology, UAB School of Medicine, Birmingham, AL, USA
| | - Paige M Siper
- Seaver Autism Center, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Latha Soorya
- Department of Psychiatry, Rush University Medical Center, Chicago, IL, USA
| | - Andrew Thaliath
- Department of Pediatrics, Rush University Medical Center, Chicago, IL, USA
| | - Audrey Thurm
- Intramural Research Program, National Institute of Mental Health, Bethesda, USA
| | - Bo Zhang
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - Mustafa Sahin
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - April R Levin
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA.
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Ethridge L, Thaliath A, Kraff J, Nijhawan K, Berry-Kravis E. Development of Neural Response to Novel Sounds in Fragile X Syndrome: Potential Biomarkers. Am J Intellect Dev Disabil 2020; 125:449-464. [PMID: 33211818 PMCID: PMC8631234 DOI: 10.1352/1944-7558-125.6.449] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Auditory processing abnormalities in fragile X syndrome (FXS) may contribute to difficulties with language development, pattern identification, and contextual updating. Participants with FXS (N = 41) and controls (N = 27) underwent auditory event-related potentials during presentation of an oddball paradigm. Data was adequate for analysis for 33 participants with FXS and 27 controls (age 4-51 y, 13 females [FXS]; 4-54 y, 11 females [control]). Participants with FXS showed larger N1 and P2 amplitudes, abnormal lack of modulation of P1 and P2 amplitudes and P2 latency in response to oddball stimuli ) relative to controls: Females with FXS were more similar to controls. Participants with FXS showed a marginal speeding of the P2 latency, suggesting potentiation to oddball stimuli rather than habituation. Participants with FXS showed a heightened N1 habituation effect compared to controls. Gamma power was significantly higher for participants with FXS. Groups did not differ on mismatch negativity. Both controls and participants with FXS showed similar developmental trajectories in P1 and N1 amplitude, P2 latency, and gamma power, but not for P2 amplitude. One month retest analyses performed in 14 participants suggest strong test-retest reliability for most measures. Individuals with FXS show previously demonstrated increased response amplitude and high frequency neural activity. Despite an overall normal developmental trajectory for most measures, individuals with FXS show age-independent but gender-dependent decreases in complex processing of novel stimuli. Many markers show strong retest reliability even in children and thus are potential biomarkers for clinical trials in FXS.
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Affiliation(s)
- Lauren Ethridge
- Lauren Ethridge, University of Oklahoma Health Sciences Center
| | - Andrew Thaliath
- Andrew Thaliath, Jeremy Kraff, Karan Nijhawan, and Elizabeth Berry-Kravis, Rush University Medical Center, Chicago
| | - Jeremy Kraff
- Andrew Thaliath, Jeremy Kraff, Karan Nijhawan, and Elizabeth Berry-Kravis, Rush University Medical Center, Chicago
| | - Karan Nijhawan
- Andrew Thaliath, Jeremy Kraff, Karan Nijhawan, and Elizabeth Berry-Kravis, Rush University Medical Center, Chicago
| | - Elizabeth Berry-Kravis
- Andrew Thaliath, Jeremy Kraff, Karan Nijhawan, and Elizabeth Berry-Kravis, Rush University Medical Center, Chicago
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Haladi S, Odappa G, Rao S, Thaliath A, Simon P, Ravi R. Sociodemographic, epidemiological, clinical, and treatment profile of snakebite cases presented to a tertiary care hospital in Davangere, Karnataka, India. Muller J Med Sci Res 2016. [DOI: 10.4103/0975-9727.174605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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