Up-regulation of cyclooxygenase-2 in inflammatory demyelinating neuropathy.
To clarify the role of prostaglandins in peripheral nerve demyelination, we examined the expression of cyclooxygenase-2 (COX-2) using selected nerve specimens from patients with chronic inflammatory demyelinating polyneuropathy. COX-2 protein was up-regulated in macrophages causing active demyelination. In situ hybridization revealed that COX-2 mRNA signals were strongly expressed on macrophages adhering to the demyelinating nerve fibers at the endoneurium. This observation may provide a rationale for application of neuroprotective strategies employing COX-2 inhibitors in inflammatory demyelinating neuropathies.
Kawasaki
T
T
Department of Neurology, Graduate School of Medicine, Kyoto University, Japan.
Oka
N
N
Akiguchi
I
I
Miyamoto
K
K
Kaji
R
R
Shibasaki
H
H
D000293:Adolescent; D000328:Adult; D000368:Aged; D015703:Antigens, CD / Q000032:analysis; D015214:Antigens, Differentiation, Myelomonocytic / Q000032:analysis; D002648:Child; D051546:Cyclooxygenase 2; D005260:Female; D006801:Humans; D007527:Isoenzymes / Q000235:genetics* / Q000378:metabolism*; D008264:Macrophages / Q000378:metabolism / Q000473:pathology / Q000648:ultrastructure; D008297:Male; D008565:Membrane Proteins; D008875:Middle Aged; D009413:Nerve Fibers, Myelinated / Q000378:metabolism / Q000473:pathology / Q000648:ultrastructure; D010525:Peripheral Nerves / Q000201:enzymology* / Q000473:pathology / Q000648:ultrastructure; D020277:Polyradiculoneuropathy, Chronic Inflammatory Demyelinating / Q000188:drug therapy / Q000201:enzymology* / Q000473:pathology; D011451:Prostaglandin-Endoperoxide Synthases / Q000235:genetics* / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D015854:Up-Regulation / Q000235:genetics*; D000097382:CD68 Molecule
D015703:Antigens, CD; D015214:Antigens, Differentiation, Myelomonocytic; D051546:Cyclooxygenase 2; D007527:Isoenzymes; D008565:Membrane Proteins; D011451:Prostaglandin-Endoperoxide Synthases; D012333:RNA, Messenger; C067980:CD68 antigen, human; D000097382:CD68 Molecule; C496540:PTGS2 protein, human