Phosphatidylethanolamine methyltransferase and cAMP, cGMP phosphodiesterases in lymphocytes and monocytes in sarcoidosis
Autor: | L. Timouyasse, H. Pacheco, Catherine Rey, M. Dubois, Max Perrin-Fayolle, Pierre Fonlupt, Y. Pacheco, Annie-France Prigent, M.T. Chambe, N Biot |
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Rok vydání: | 1987 |
Předmět: |
Adult
Lung Diseases Male medicine.medical_specialty Sarcoidosis Phosphatidylethanolamine N-Methyltransferase Lymphocyte Clinical Biochemistry Cell Phosphodiesterase 3 Biology Biochemistry Monocytes Cyclic nucleotide chemistry.chemical_compound 3' 5'-Cyclic-GMP Phosphodiesterases Internal medicine Leukocytes medicine Humans Lymphocytes Monocyte Biochemistry (medical) Phosphodiesterase Methyltransferases General Medicine medicine.anatomical_structure Endocrinology chemistry 3' 5'-Cyclic-AMP Phosphodiesterases Phosphatidylethanolamine N-methyltransferase Female PDE10A |
Zdroj: | Clinica Chimica Acta. 163:267-277 |
ISSN: | 0009-8981 |
DOI: | 10.1016/0009-8981(87)90245-2 |
Popis: | Among the various hypotheses proposed to explain immune cell defect in sarcoidosis, we examined thoroughly that of Faguet who described abnormalities of signal transmission at lymphocyte membrane level. Phosphatidylethanolamine methyltransferase and cAMP cGMP phosphodiesterases were studied in blood lymphocytes and monocytes from 8 subjects with sarcoidosis disease. Phosphatidylethanolamine methyltransferase (PMT1) plays an important regulatory role in membrane signal transmission. cAMP and cGMP phosphodiesterases (PDE) regulate cytoplasmic cyclic nucleotide levels and so participate in the modulation of the cell cycle. We observed a decreased PMT1 activity in lymphocytes and monocytes and a decreased cAMP and cGMP PDE activities in monocytes. It is not now possible to say if these abnormalities are primary or secondary. Whatever the origin of this dysfunctioning, these results evoke simultaneous disturbances of membrane signal transmission and cell cycle in monocytes and membrane abnormalities in lymphocytes. These abnormalities could explain some immune cell defects in sarcoidosis disease. |
Databáze: | OpenAIRE |
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