Alpha-synuclein expression in the developing human brain.

Ravi Raghavan, Loes de Kruijff, Monique D. Sterrenburg, Beverly B. Rogers, Christa L. Hladik, Charles L. White

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Alpha (alpha)-synuclein is a presynaptic protein, abnormal expression of which has been associated with neurodegenerative and neoplastic diseases. It is abundant in the developing vertebrate central nervous system (CNS), but less is known about its developmental expression in the human CNS. Immunohistochemical expression of alpha-synuclein was studied in 39 fetal, perinatal, pediatric, and adolescent brains. Perikaryal expression of alpha-synuclein is observed as early as 11-wk gestation in the cortical plate. Several discrete neuronal groups in the hippocampus, basal ganglia, and brain stem express perikaryal alpha-synuclein by 20-wk gestation, persisting through the first few years of life. In the cerebellum, alpha-synuclein is present by 21-wk gestation and persists into adult life as a coarse granular neuropil reaction product in the internal granular layer, and as a diffuse neuropil "blush" in the molecular layer. The germinal matrix, glia, endothelial cells, external granular layer, Pukinje cells, and dentate neurons are consistently negative for alpha-synuclein. We conclude that alpha-synuclein is expressed very early in human gestation, and that its distribution and temporal sequence of expression varies in discrete neuronal groups. Perikaryal alpha-synuclein starts disappearing from the neuronal cytosol in early childhood, and only the neuropil retains immunoreactivity into adulthood. The reappearance of alpha-synuclein in the adult neuronal cytosol in certain disease processes may represent reemergence of cues from an earlier developmental stage as part of a stress response.

Original languageEnglish (US)
Pages (from-to)506-516
Number of pages11
JournalPediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society
Volume7
Issue number5
StatePublished - Sep 2004

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alpha-Synuclein
Brain
Neuropil
Pregnancy
Cytosol
Central Nervous System
Neocortex
Basal Ganglia
Neuroglia
Neurodegenerative Diseases
Cerebral Cortex
Cerebellum
Brain Stem
Cues
Vertebrates
Hippocampus
Endothelial Cells
Pediatrics
Neurons

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Pathology and Forensic Medicine

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Alpha-synuclein expression in the developing human brain. / Raghavan, Ravi; Kruijff, Loes de; Sterrenburg, Monique D.; Rogers, Beverly B.; Hladik, Christa L.; White, Charles L.

In: Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, Vol. 7, No. 5, 09.2004, p. 506-516.

Research output: Contribution to journalArticle

Raghavan, Ravi ; Kruijff, Loes de ; Sterrenburg, Monique D. ; Rogers, Beverly B. ; Hladik, Christa L. ; White, Charles L. / Alpha-synuclein expression in the developing human brain. In: Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society. 2004 ; Vol. 7, No. 5. pp. 506-516.
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