Local disturbance of neuronal migration in the S-100beta-retarded mutant mouse.
Homozygotes of a mouse strain with genetic polydactyly (Pdn) show disrupted cortical lamination and a significant decrease of S-100beta-immunoreactive elements in a particular area of the brain. In order to understand the abnormal cortical formation at the cellular level, the migration of cortical neurons and the development of glial cells were studied using bromodeoxyuridine (BrdU), S-100beta, and glial fibrillary acidic protein (GFAP) immunohistochemistry. Homozygous mice (Pdn/Pdn) displayed a variable pattern of abnormalities. Irregular GFAP-positive radial glial cells and disturbance of neuronal migration were found in a circumscribed area of the caudo-dorsal cortex of newborn Pdn mouse. The number of S-100beta-positive cells was reduced in this area. The present results suggest that abnormal cortical lamination closely correlates with disturbance of neuronal migration and abnormalities of glial cells, especially a significant decrease of S-100beta-immunoreactive cells.
Ueda
S
S
Department of Histology and Neurobiology, Dokkyo University School of Medicine, Mibu, Tochigi 321-02, Japan. shu-ueda@dokkyomed.ac.jp
Saitoh
Y
Y
Koibuchi
N
N
Ishizuya-Oka
A
A
D000818:Animals; D000831:Animals, Newborn; D000963:Antimetabolites; D001973:Bromodeoxyuridine; D002135:Calcium-Binding Proteins / Q000235:genetics; D002465:Cell Movement / Q000502:physiology*; D002540:Cerebral Cortex / Q000166:cytology / Q000254:growth & development; D005260:Female; D005904:Glial Fibrillary Acidic Protein / Q000032:analysis; D007150:Immunohistochemistry; D008297:Male; D051379:Mice; D008818:Mice, Neurologic Mutants; D009414:Nerve Growth Factors; D009457:Neuroglia / Q000737:chemistry / Q000166:cytology; D009474:Neurons / Q000737:chemistry / Q000166:cytology*; D017689:Polydactyly / Q000235:genetics; D011247:Pregnancy; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins / Q000235:genetics*
D000963:Antimetabolites; D002135:Calcium-Binding Proteins; D005904:Glial Fibrillary Acidic Protein; D009414:Nerve Growth Factors; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins; D001973:Bromodeoxyuridine