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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Kalipada Pahan Mushfiquddin Khan Inderjit Singh |
| Abstract | X-adrenoleukodystrophy (X-ALD) is an inherited fatty acid metabolic disorder with secondary manifestation of neuroinflammatory disease process. We report that compounds (forskolin, 8-bromo cAMP, and rolipram) that increase cAMP and activate protein kinase A (PKA) were found to stimulate the peroxisomal β-oxidation of lignoceric acid (C24:0) whereas compounds (H-89 and myristoylated PKI) that decrease cAMP and PKA activity inhibited the peroxisomal β-oxidation of lignoceric acid in cultured skin fibroblasts from X-ALD patients. Consistent with the stimulation of β-oxidation of lignoceric acid, activators of PKA normalized the level of very long chain fatty acids (VLCFA) in X-ALD cultured skin fibroblasts. This normalization of VLCFA in X-ALD cells with forskolin, 8-Br cAMP or with rolipram, an inhibitor of cAMP phosphodiesterase, was realized independent of expression of mRNA or protein of the ALD gene, suggesting that cAMP derivatives can correct the metabolic defect in X-ALD fibroblasts without involving the candidate gene for the disease. Because astrocytes and microglia in demyelinating lesions of X-ALD brain express proinflammatory cytokines such as tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), we examined the effect of cAMP derivatives or rolipram on lipopolysaccharide-stimulated rat primary astrocytes and microglia and found that cAMP derivatives and rolipram inhibited the induction of TNF-α and IL-1β in both astrocytes and microglia. The ability of cAMP derivatives and rolipram to block the induction of TNF-α and IL-1β in astrocytes and microglia and to normalize the fatty acid pathogen in skin fibroblasts of x-adrenoleukodystrophy (X-ALD) clearly identify cAMP analogs or rolipram as candidates for potential therapy for X-ALD patients.—Pahan, K., M. Khan, and I. Singh. Therapy for X-adrenoleukodystrophy: normalization of very long chain fatty acids and inhibition of induction of cytokines by cAMP. J. Lipid Res. 1998. 39: 1091–1100. |
| ISSN | 00222275 |
| e-ISSN | 15397262 |
| DOI | 10.1016/S0022-2275(20)33878-5 |
| Journal | Journal of Lipid Research |
| Issue Number | 5 |
| Volume Number | 39 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 1998-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Biochemistry Camp Very Long Chain Fatty Acids X-ald Glial Cells Cytokines |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Endocrinology |
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