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Yankowitz LD, Petrulla V, Plate S, Tunc B, Guthrie W, Meera SS, Tena K, Pandey J, Swanson MR, Pruett JR, Cola M, Russell A, Marrus N, Hazlett HC, Botteron K, Constantino JN, Dager SR, Estes A, Zwaigenbaum L, Piven J, Schultz RT, Parish-Morris J. Infants later diagnosed with autism have lower canonical babbling ratios in the first year of life. Mol Autism 2022; 13:28. [PMID: 35761377 PMCID: PMC9235227 DOI: 10.1186/s13229-022-00503-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 05/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Canonical babbling-producing syllables with a mature consonant, full vowel, and smooth transition-is an important developmental milestone that typically occurs in the first year of life. Some studies indicate delayed or reduced canonical babbling in infants at high familial likelihood for autism spectrum disorder (ASD) or who later receive an ASD diagnosis, but evidence is mixed. More refined characterization of babbling in the first year of life in infants with high likelihood for ASD is needed. METHODS Vocalizations produced at 6 and 12 months by infants (n = 267) taking part in a longitudinal study were coded for canonical and non-canonical syllables. Infants were categorized as low familial likelihood (LL), high familial likelihood diagnosed with ASD at 24 months (HL-ASD) or not diagnosed (HL-Neg). Language delay was assessed based on 24-month expressive and receptive language scores. Canonical babble ratio (CBR) was calculated by dividing the number of canonical syllables by the number of total syllables. Generalized linear (mixed) models were used to assess the relationship between group membership and CBR, controlling for site, sex, and maternal education. Logistic regression was used to assess whether canonical babbling ratios at 6 and 12 months predict 24-month diagnostic outcome. RESULTS No diagnostic group differences in CBR were detected at 6 months, but HL-ASD infants produced significantly lower CBR than both the HL-Neg and LL groups at 12 months. HL-Neg infants with language delay also showed reduced CBR at 12 months. Neither 6- nor 12-month CBR was significant predictors of 24-month diagnostic outcome (ASD versus no ASD) in logistic regression. LIMITATIONS Small numbers of vocalizations produced by infants at 6 months may limit the reliability of CBR estimates. It is not known if results generalize to infants who are not at high familial likelihood, or infants from more diverse racial and socioeconomic backgrounds. CONCLUSIONS Lower canonical babbling ratios are apparent by the end of the first year of life in ASD regardless of later language delay, but are also observed for infants with later language delay without ASD. Canonical babbling may lack specificity as an early marker when used on its own.
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Affiliation(s)
- L D Yankowitz
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA.
| | - V Petrulla
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - S Plate
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - B Tunc
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - W Guthrie
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - S S Meera
- National Institute of Mental Health and Neurosciences, Bangalore, India
| | - K Tena
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - J Pandey
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M R Swanson
- Department of Psychology, University of Texas at Dallas, Richardson, TX, USA
| | - J R Pruett
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
| | - M Cola
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - A Russell
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - N Marrus
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
| | - H C Hazlett
- University of North Carolina, Chapel Hill, NC, USA
| | - K Botteron
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
| | - J N Constantino
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
| | - S R Dager
- University of Washington, Seattle, WA, USA
| | - A Estes
- University of Washington, Seattle, WA, USA
| | - L Zwaigenbaum
- Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - J Piven
- University of North Carolina, Chapel Hill, NC, USA
| | - R T Schultz
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J Parish-Morris
- Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Lewis JD, Evans AC, Pruett JR, Botteron K, Zwaigenbaum L, Estes A, Gerig G, Collins L, Kostopoulos P, McKinstry R, Dager S, Paterson S, Schultz RT, Styner M, Hazlett H, Piven J. Network inefficiencies in autism spectrum disorder at 24 months. Transl Psychiatry 2014; 4:e388. [PMID: 24802306 PMCID: PMC4035719 DOI: 10.1038/tp.2014.24] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 03/03/2014] [Accepted: 03/08/2014] [Indexed: 02/01/2023] Open
Abstract
Autism spectrum disorder (ASD) is a developmental disorder defined by behavioral symptoms that emerge during the first years of life. Associated with these symptoms are differences in the structure of a wide array of brain regions, and in the connectivity between these regions. However, the use of cohorts with large age variability and participants past the generally recognized age of onset of the defining behaviors means that many of the reported abnormalities may be a result of cascade effects of developmentally earlier deviations. This study assessed differences in connectivity in ASD at the age at which the defining behaviors first become clear. There were 113 24-month-old participants at high risk for ASD, 31 of whom were classified as ASD, and 23 typically developing 24-month-old participants at low risk for ASD. Utilizing diffusion data to obtain measures of the length and strength of connections between anatomical regions, we performed an analysis of network efficiency. Our results showed significantly decreased local and global efficiency over temporal, parietal and occipital lobes in high-risk infants classified as ASD, relative to both low- and high-risk infants not classified as ASD. The frontal lobes showed only a reduction in global efficiency in Broca's area. In addition, these same regions showed an inverse relation between efficiency and symptom severity across the high-risk infants. The results suggest delay or deficits in infants with ASD in the optimization of both local and global aspects of network structure in regions involved in processing auditory and visual stimuli, language and nonlinguistic social stimuli.
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Affiliation(s)
- J D Lewis
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - A C Evans
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - J R Pruett
- Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA
| | - K Botteron
- Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA
| | - L Zwaigenbaum
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - A Estes
- Department of Speech and Hearing Sciences, University of Washington, Seattle, WA, USA
| | - G Gerig
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT, USA
| | - L Collins
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - P Kostopoulos
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - R McKinstry
- Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA
| | - S Dager
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - S Paterson
- Center for Autism Research, University of Pennsylvania, Philadelphia, PA, USA
| | - R T Schultz
- Center for Autism Research, University of Pennsylvania, Philadelphia, PA, USA
| | - M Styner
- Department of Computer Science, University of North Carolina, Chapel Hill, NC, USA
- Carolina Institute for Developmental Disabilities, University of North Carolina, Chapel Hill, NC, USA
| | - H Hazlett
- Carolina Institute for Developmental Disabilities, University of North Carolina, Chapel Hill, NC, USA
| | - J Piven
- Carolina Institute for Developmental Disabilities, University of North Carolina, Chapel Hill, NC, USA
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