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ACTH(1-24) stimulates the migration of human monocytes in vitro
S Genedani1, M Bernardi, M G Baldini
1Institute of Pharmacology, University of Modena, Italy.
Insights
Adrenocorticotropic hormone (ACTH) directly stimulates human monocyte migration. This hormone, ACTH(1-24), acts as a potent chemokinetic factor, influencing immune cell movement in vitro.
Area of Science:
- Immunology
- Endocrinology
- Cell Biology
Background:
- Immune responses are known to be modulated by various stressors.
- The direct impact of hormones on immune cell function requires further elucidation.
Purpose of the Study:
- To investigate the direct effect of adrenocorticotropic hormone (ACTH) on the in vitro migration of human monocytes.
Main Methods:
- Utilized chemotaxis chambers to assess monocyte migration.
- Applied ACTH(1-24) at varying concentrations (10^-14 M and 10^-8 M).
Main Results:
- ACTH(1-24) significantly enhanced the number of migrating human monocytes.
- Maximum chemokinetic effect observed at concentrations of 10^-14 M and 10^-8 M.
Conclusions:
- ACTH(1-24) directly and potently stimulates human monocyte migration.
- ACTH exerts a chemokinetic effect on monocytes, influencing their movement.
Abstract:
In view of the increasing evidence that a variety of stresses can influence immune responses, the direct effect of adrenocorticotropic hormone on the migration of human monocytes was studied in vitro. ACTH(1-24) significantly increased the number of migrating cells when placed in the same or the opposite compartment of the chemotaxis chamber, maximum activity being obtained at 10(-14) and 10(-8) M. The results indicate that ACTH(1-24) directly and potently stimulates the migration of human monocytes by means of a chemokinetic effect.