| melanogen | A colourless substance that may be converted into melanin; e.g., some patients with widespread metastases of melanoma excrete melanogen in their urine, and melanin is formed when the urine is exposed to air (i.e., oxidised) for a few hours. Origin: melanin + G. -gen, producing (05 Mar 2000) |
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| melanogenaemia | The presence of melanin precursors in the blood; may occur in malignant melanoma with metastasis. Origin: melanogen + G. Haima, blood (05 Mar 2000) |
| melanogenesis | Formation of melanin. Origin: melanin + G. Genesis, production (05 Mar 2000) |
| melanogenesis |
Melanogenesis is the production of the pigment melanin, responsible for skin colour. It is triggered by the damaging effect of ultraviolet rays. Ultraviolet rays penetrate the skin and damage DNA; thymidine dinucleotides (pTpT) fragments from damaged DNA will trigger release of the hormone alpha-MSH, which can then bind to melanocytes to cause them produce melanin. Melanin vesicles from the melanocytes are then transferred to surrounding keratinocytes. ...
Ãâó: en.wikipedia.org/wiki/Melanogenesis
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| melanogen |
a colorless chromogen, convertible into melanin, which may occur in the urine in certain diseases, e.g., malignant melanoma.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| melanogenic |
causing the production of melanin.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| melanogenesis |
the production of the pigment Melanin after exposure to UVR. Melanin is synthesized from the aminoacid Tyrosine.
Ãâó: tan-aid.com/TanningGlossary.html
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