Immunohistochemical localization of insulin-like growth factor binding protein 2 in the central nervous system of SOD1(G93A) transgenic mice.
In the present study, we performed immunohistochemical studies to investigate the changes of insulin-like growth factor binding protein 2 (IGFBP2) in the central nervous system of SOD1(G93A) mutant transgenic mice as an in vivo model of amyotrophic lateral sclerosis (ALS). Decreased immunoreactivity for IGFBP2 was observed in the cerebral cortex, hippocampus and brainstem of SOD1(G93A) transgenic mice. In the cerebral cortex, the number of IGFBP2-positive cells was decreased in the somatomotor area, somatosensory area, auditory area, visual area, entorhinal area, piriform area and prefrontal area. In the hippocampal formation, IGFBP2 immunoreactivity was significantly decreased in the CA1-3 areas and the dentate gyrus. In the brainstem, few IGFBP2-immunoreactive cells were observed in the medullary and pontine reticular formation, vestibular nucleus, trigeminal motor nucleus, facial nucleus, hypoglossal nucleus and raphe nucleus. In the spinal cord, IGFBP2 immunoreactivity was not significantly decreased in SOD1(G93A) transgenic mice. This study showing decreased IGFBP2 in different brain regions of SOD1(G93A) transgenic mice may provide clues for understanding differential susceptibility of neural structures in ALS.
Sim
Sung Eun
SE
Department of Anatomy, Seoul National University College of Medicine, 28 Yongon-Dong, Chongno-Gu, Seoul 110-799, Korea.
Chung
Yoon Hee
YH
Jeong
Ji Hoon
JH
Yun
Sin Weon
SW
Lim
Hyoun-Sub
HS
Kim
Daejin
D
Kim
Sung Su
SS
Lee
Won Bok
WB
Cha
Choong Ik
CI
D000818:Animals; D001921:Brain / Q000378:metabolism; D001933:Brain Stem / Q000378:metabolism; D002490:Central Nervous System / Q000378:metabolism*; D002540:Cerebral Cortex / Q000378:metabolism; D006624:Hippocampus / Q000378:metabolism; D007150:Immunohistochemistry; D018971:Insulin-Like Growth Factor Binding Protein 2 / Q000378:metabolism*; D051379:Mice; D008822:Mice, Transgenic; D013116:Spinal Cord / Q000378:metabolism
D018971:Insulin-Like Growth Factor Binding Protein 2