Definition of melanocyte
A cell in the skin that produces the pigment melanin.
Examples of melanocyte in the following topics:
- The difference in skin color between lightly and darkly pigmented individuals is due to the level of melanocyte activity and not due to the number of melanocytes in their skin.
- These stimuli include Vitamin D metabolites, retinoids (found in acne creams ), melanocyte-stimulating hormone, cholera toxin, and UV irradiation, which all trigger melanogenesis and alter skin pigmentation .
- The anterior pituitary receives signalling molecules from the hypothalamus, and in response, synthesizes and secretes seven important hormones: Growth hormone (GH)- stimulates growth, cell reproduction and regeneration Thyroid-stimulating hormone (TSH)- induces the thyroid to produce hormones that regulate metabolism Adrenocorticotropic hormone (ACTH)- increases production of stress hormones by the adrenal glands Prolactin (PRL)- induces lactation Luteinizing hormone (LH)- in females, triggers ovulation and the development of the corpus luteum; in males, stimulates the production of testosterone Follicle-stimulating hormone (FSH)-regulates the development, growth, pubertal maturation, and reproductive body processes Melanocyte-stimulating hormone (MSH)- stimulates the production and release of melanin by melanocytes in skin and hair; also affects appetite and sexual arousal.
- It is thought that the overproduction of melanocyte-stimulating hormone (MSH), brought on by stress, can cause outbreaks of this condition.