Tags

Type your tag names separated by a space and hit enter

Expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in HTLV-I-associated myelopathy.
J Neuropathol Exp Neurol. 1998 Sep; 57(9):839-49.JN

Abstract

Matrix metalloproteinases (MMPs) have been reported to be involved in inflammatory disorders of the central nervous system (CNS). However, little is known about the role of MMPs in the pathogenesis of HTLV-I-associated myelopathy (HAM)/Tropical spastic paraparesis (TSP). To address this issue, we examined the tissue expression and localization of MMPs and their inhibitors, tissue inhibitors of metalloproteinases (TIMPs) in the spinal cord lesions of HAM/TSP using immunohistochemistry. In addition, the blood and cerebrospinal fluid (CSF) levels of MMPs and TIMPs of the patients with HAM/TSP were determined using sandwich enzyme immunoassays (SIA) and gelatin zymography. Immunohistochemical studies revealed that collagen IV and decorin immunoreactivity on the basement membrane of CNS parenchymal vessels was partially disrupted where inflammatory mononuclear cells infiltrated in active-chronic lesions of HAM/TSP. In these lesions, MMP-2 (gelatinase A) was immunostained mainly on the surface of foamy macrophages and lymphocytes, whereas MMP-9 (gelatinase B) expression was positive in the intravascular and perivascular mononuclear cells but not on foamy macrophages. In contrast, inactive chronic lesions of the spinal cords of the HAM/TSP contained fewer MMP-2-positive or MMP-9-positive mononuclear cells than active-chronic lesions. Many parenchymal vessels had thickened vascular walls which showed increased immunoreactivity to decorin. SIA revealed that production levels of MMP-2 and MMP-9 in both blood and CSF were higher in the patients with HAM/TSP than those in non-inflammatory other neurological disease controls (ONDs). Using zymography, proMMP-9 was detected more frequently in the CSF of patients with HAM/TSP than those in ONDs. Taken together, our data indicate that MMP-2 and MMP-9 may play an important role in the blood-brain barrier breakdown and tissue remodeling in the CNS of HAM/TSP.

Authors+Show Affiliations

The Third Department of Internal Medicine, Kagoshima University School of Medicine, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9737547

Citation

Umehara, F, et al. "Expression of Matrix Metalloproteinases and Tissue Inhibitors of Metalloproteinases in HTLV-I-associated Myelopathy." Journal of Neuropathology and Experimental Neurology, vol. 57, no. 9, 1998, pp. 839-49.
Umehara F, Okada Y, Fujimoto N, et al. Expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in HTLV-I-associated myelopathy. J Neuropathol Exp Neurol. 1998;57(9):839-49.
Umehara, F., Okada, Y., Fujimoto, N., Abe, M., Izumo, S., & Osame, M. (1998). Expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in HTLV-I-associated myelopathy. Journal of Neuropathology and Experimental Neurology, 57(9), 839-49.
Umehara F, et al. Expression of Matrix Metalloproteinases and Tissue Inhibitors of Metalloproteinases in HTLV-I-associated Myelopathy. J Neuropathol Exp Neurol. 1998;57(9):839-49. PubMed PMID: 9737547.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Expression of matrix metalloproteinases and tissue inhibitors of metalloproteinases in HTLV-I-associated myelopathy. AU - Umehara,F, AU - Okada,Y, AU - Fujimoto,N, AU - Abe,M, AU - Izumo,S, AU - Osame,M, PY - 1998/9/16/pubmed PY - 1998/9/16/medline PY - 1998/9/16/entrez SP - 839 EP - 49 JF - Journal of neuropathology and experimental neurology JO - J Neuropathol Exp Neurol VL - 57 IS - 9 N2 - Matrix metalloproteinases (MMPs) have been reported to be involved in inflammatory disorders of the central nervous system (CNS). However, little is known about the role of MMPs in the pathogenesis of HTLV-I-associated myelopathy (HAM)/Tropical spastic paraparesis (TSP). To address this issue, we examined the tissue expression and localization of MMPs and their inhibitors, tissue inhibitors of metalloproteinases (TIMPs) in the spinal cord lesions of HAM/TSP using immunohistochemistry. In addition, the blood and cerebrospinal fluid (CSF) levels of MMPs and TIMPs of the patients with HAM/TSP were determined using sandwich enzyme immunoassays (SIA) and gelatin zymography. Immunohistochemical studies revealed that collagen IV and decorin immunoreactivity on the basement membrane of CNS parenchymal vessels was partially disrupted where inflammatory mononuclear cells infiltrated in active-chronic lesions of HAM/TSP. In these lesions, MMP-2 (gelatinase A) was immunostained mainly on the surface of foamy macrophages and lymphocytes, whereas MMP-9 (gelatinase B) expression was positive in the intravascular and perivascular mononuclear cells but not on foamy macrophages. In contrast, inactive chronic lesions of the spinal cords of the HAM/TSP contained fewer MMP-2-positive or MMP-9-positive mononuclear cells than active-chronic lesions. Many parenchymal vessels had thickened vascular walls which showed increased immunoreactivity to decorin. SIA revealed that production levels of MMP-2 and MMP-9 in both blood and CSF were higher in the patients with HAM/TSP than those in non-inflammatory other neurological disease controls (ONDs). Using zymography, proMMP-9 was detected more frequently in the CSF of patients with HAM/TSP than those in ONDs. Taken together, our data indicate that MMP-2 and MMP-9 may play an important role in the blood-brain barrier breakdown and tissue remodeling in the CNS of HAM/TSP. SN - 0022-3069 UR - https://www.unboundmedicine.com/medline/citation/9737547/Expression_of_matrix_metalloproteinases_and_tissue_inhibitors_of_metalloproteinases_in_HTLV_I_associated_myelopathy_ L2 - https://academic.oup.com/jnen/article-lookup/doi/10.1097/00005072-199809000-00005 DB - PRIME DP - Unbound Medicine ER -