Cited by 888Neonatal and fetal brain pathologyNeurogenesis and neuroplasticity mechanismsAdvanced Neuroimaging Techniques and Applications

Sequence of Central Nervous System Myelination in Human Infancy. II. Patterns of Myelination in Autopsied Infants

Kinney, Hannah C., Ann brody, Betty, Kloman, Alexander S., Gilles, Floyd H.·1988·Journal of Neuropathology and Experimental Neurology

Abstract

The timing and synchronization of postnatal myelination in the human central nervous system (CNS) are complex. We found eight time-related patterns of CNS myelination during the first two postnatal years in autopsied infants. The intensity of myelination was graded in 162 infants with diverse diseases on an ordinal scale of degrees 0-4. The Ayer method for maximum likelihood estimates for censored data was utilized to generate curves of the temporal changes in the percent of infants with degrees 0 through 4 of myelin in 62 white matter sites. These sites fall into eight subgroups determined by the presence or absence of microscopic myelin (degree 1) at birth and the median age at which mature myelin (degree 3) is reached. There is variability in the timing of myelination within and across axonal systems, and early onset of myelination is not always followed by early myelin maturation. We reexamined general rules governing the timing of myelination proposed by previous investigators, and found that those rules are neither complete nor inviolate, and that there is a complex interplay among them. This study specifies distinct periods of maturation in which myelinating pathways are potentially vulnerable to insult during the first two postnatal years.

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Crossref · 10.1097/00005072-198805000-00003

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  • Regional differences could result from different timing of oligodendrocyte maturation during post-natal development.

    “These regional differences could result from different timing of oligodendrocyte maturation during post-natal development (21, 22).”
  • Myelination begins prenatally and is present in many regions at birth, especially primary sensory and motor pathways including the optic radiations and internal capsule.

    “Postmortem studies of white-matter myelination in the human brain find that myelination begins prenatally and is present in many regions at the time of birth, especially primary sensory and motor pathways, including the optic radiations and internal capsule210, 211.”
  • After birth, myelination generally proceeds in sensory before motor regions, projection before association areas, and posterior before anterior regions.

    “Postnatally, myelination follows a general pattern of sensory before motor regions, projection areas before associative areas, and posterior before anterior regions211.”

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Authors
Kinney, H. C., Ann brody, B., Kloman, A. S., & Gilles, F. H.
Affiliations
Boston Children's Hospital (US)
Corresponding author
Kinney, Hannah C.
Venue
Journal of Neuropathology and Experimental Neurology
Published
1988-05
Volume
47
Issue
3
Pages
217-234
ISSN
0022-3069 (ISSN-L)
OpenAlex
W2050139274
Cited by
888
References
0
Citations by year
2026: 18 · 2025: 15 · 2024: 25 · 2023: 37 · 2022: 34 · 2021: 35 · 2020: 63 · 2019: 36 · 2018: 35 · 2017: 28 · 2016: 36 · 2015: 34 · 2014: 37 · 2013: 48 · 2012: 36
FWCI
7.83
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuropathology & Experimental Neurology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Neonatal and fetal brain pathology
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
myelination, white matter maturation, postnatal development, myelin maturation, infant brain, developmental vulnerability
MeSH terms
Brain, Humans, Infant, Newborn, Myelin Sheath, Spinal Cord

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