Is there a possibility of intrasystem regulation by hormones produced by the immune cells? Experiments with extremely low concentrations of histamine.
ABSTRACT The effect of histamine in 10 -9 , 10 -12 , 10 -15 and 10 -18 molar concentrations was studied on the beta-endorphin and triiodothyronine (T 3 ) content of peritoneal immune cells (lymphocytes, monocyte-granulocyte group and mast cells), using immunocytochemical flow cytometric method. The lower concentrations (10 -15 and 10 -18 M) were effective, where endorphin content was significantly lowered and T 3 content was significantly elevated. The results call attention to the extreme sensitivity of histamine receptors in this hormonal index and to the specific response by hormone production to histamine, in the immune cells. The new data support the earlier hypothesis, that there is a hormonal network inside the immune system.
- Immunology Today 08/1997; 18(7):317-9. · 9.49 Impact Factor
Article: Beta-endorphin in granulocytes.[Show abstract] [Hide abstract]
ABSTRACT: The literature indicates that beta-endorphin can be found in the mononuclear cells of peripheral blood. In the present experiments the endorphin content of granulocytes was studied, compared to lymphocytes as reference cells. Granulocytes as well, as lymphocytes contain endorphin. The granulocytes' endorphin content is much higher. Both lymphocytes and granulocytes are also able to take up endorphin from the milieu.Cell Biology International 02/2002; 26(8):741-3. · 1.64 Impact Factor
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ABSTRACT: Recent findings indicate that the immune and neuroendocrine systems interact and modulate one another functionally. The mechanism for this seems to be that the 2 systems share a set of receptors and ligands (hormones). Cells of the immune system are able to synthesize neuroendocrine peptide hormones which are biologically active and produced in physiologically significant quantities. Furthermore, leukocytes possess functional receptors for these same neuroendocrine hormones which will specifically modulate immune responses. The structural and functional evidence for these interactions is reviewed and discussed in the context of a bidirectional regulatory circuit between the immune and neuroendocrine systems.Journal of Neuroimmunology 12/1985; 10(1):31-40. · 3.03 Impact Factor