Expression of monocarboxylate transporter MCTI was studied in archival tiss
ues from human CNS using antibodies to the carboxyl-terminal end of MCTI. S
ections of neocortex, hippocampus and cerebellum of brains from 10 adult au
topsy patients who died from other than CNS disease, and from archival surg
ical biopsy specimens of 83 primary CNS and eight non-CNS tumors were studi
ed. MCTI immunoreactivity was present in microvessels and, ependymocytes of
normal CNS tissues similar to that reported for MCTI expression in rat bra
ins. MCTI immunoreactivity was strongest in ependymomas, hemangioblastomas
and high grade glial neoplasms, and weakest in low grade gliomas. Increased
MCTI expression in high grade glial neoplasms may provide a potential ther
apeutic target for treatment of some CNS neoplasms. NeuroReport 12:761-765
(C) 2001 Lippincott Williams & Wilkins.