[3H]Paroxetine binding to human peripheral lymphocyte membranes of patients with major depression before and after treatment with fluoxetine. Export

@article{citeulike:3194378, abstract = {Serotonin has been involved in major depression and is also related to central and peripheral mechanisms of neuroimmunomodulation. Recently, the uptake of [3H]serotonin into human peripheral blood lymphocytes has been reported. We determined the density of serotonin uptake sites by the binding of [3H]paroxetine to blood peripheral lymphocyte membrane preparations of controls and of patients with major depression before and after treatment with fluoxetine for six weeks. The severity of depression was assessed by the use of Hamilton Rating Scale for Depression and of Beck Depression Inventory. There was a reduction in the number of sites for [3H]paroxetine in patients before administration of the antidepressant respecting controls, and a recovery after the treatment. Affinity was unchanged. No correlation was obtained between the severity of symptoms determined by Hamilton Rating Scale for Depression or by Beck Depression Inventory, and the number of binding sites for [3H]paroxetine. The levels of the plasma serotonin metabolite, 5-hydroxyindoleacetic acid, did not differ between the three groups of subjects, but serotonin was lower in patients after treatment respecting controls and in patients before treatment. The significant correlation between specific binding of [3H]paroxetine and plasma serotonin levels in controls was not present in the patients. Lymphocyte serotonin transporter is decreased in major depressed patients and is modulated by antidepressant treatment. In addition of counting with a peripheral marker in depression, the study of serotonin system in lymphocytes might contribute to understand the bi-directional interaction between the nervous and the immune systems.}, address = {Laboratorio de Neuroqu\'{\i}mica, Centro de Biof\'{\i}sica y Bioqu\'{\i}mica, Instituto Venezolano de Investigaciones Cient\'{\i}ficas Apdo. 21827, Caracas 1020-A, Venezuela and Centro de Salud Mental del Este, Caracas, Venezuela.}, author = {Urbina, M. and Pineda, S. and Pi\~{n}ango, L. and Carreira, I. and Lima, L.}, citeulike-article-id = {3194378}, citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/12609459}, citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=12609459}, issn = {0192-0561}, journal = {International journal of immunopharmacology}, keywords = {depression, fluoxetine, lymphocyte, sert}, month = {October}, number = {10}, pages = {631--646}, posted-at = {2008-09-04 17:04:56}, priority = {3}, title = {[3H]Paroxetine binding to human peripheral lymphocyte membranes of patients with major depression before and after treatment with fluoxetine.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/12609459}, volume = {21}, year = {1999} }

TY - JOUR ID - citeulike:3194378 L3 - citeulike-article-id:3194378 N2 - Serotonin has been involved in major depression and is also related to central and peripheral mechanisms of neuroimmunomodulation. Recently, the uptake of [3H]serotonin into human peripheral blood lymphocytes has been reported. We determined the density of serotonin uptake sites by the binding of [3H]paroxetine to blood peripheral lymphocyte membrane preparations of controls and of patients with major depression before and after treatment with fluoxetine for six weeks. The severity of depression was assessed by the use of Hamilton Rating Scale for Depression and of Beck Depression Inventory. There was a reduction in the number of sites for [3H]paroxetine in patients before administration of the antidepressant respecting controls, and a recovery after the treatment. Affinity was unchanged. No correlation was obtained between the severity of symptoms determined by Hamilton Rating Scale for Depression or by Beck Depression Inventory, and the number of binding sites for [3H]paroxetine. The levels of the plasma serotonin metabolite, 5-hydroxyindoleacetic acid, did not differ between the three groups of subjects, but serotonin was lower in patients after treatment respecting controls and in patients before treatment. The significant correlation between specific binding of [3H]paroxetine and plasma serotonin levels in controls was not present in the patients. Lymphocyte serotonin transporter is decreased in major depressed patients and is modulated by antidepressant treatment. In addition of counting with a peripheral marker in depression, the study of serotonin system in lymphocytes might contribute to understand the bi-directional interaction between the nervous and the immune systems. IS - 10 JF - International journal of immunopharmacology SN - 0192-0561 AD - Laboratorio de Neuroquímica, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas Apdo. 21827, Caracas 1020-A, Venezuela and Centro de Salud Mental del Este, Caracas, Venezuela. EP - 646 TI - [3H]Paroxetine binding to human peripheral lymphocyte membranes of patients with major depression before and after treatment with fluoxetine. VL - 21 SP - 631 KW - depression KW - fluoxetine KW - lymphocyte KW - sert AU - Urbina, M AU - Pineda, S AU - Piñango, L AU - Carreira, I AU - Lima, L PY - 1999/10// UR - http://view.ncbi.nlm.nih.gov/pubmed/12609459 ER -