melanocyte


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melanocyte

 [mel´ah-no-sīt″, mĕ-lan´o-sīt]
any of the dendritic clear cells of the epidermis that synthesize tyrosinase and, within their melanosomes, the pigment melanin; the melanosomes are then transferred from melanocytes to keratinocytes. adj., adj melanocyt´ic.

mel·a·no·cyte

(mel'ă-nō-sīt),
A pigment-producing cell located in the basal layer of the epidermis with branching processes by means of which melanosomes are transferred to epidermal cells, resulting in pigmentation of the epidermis. It is also present in the basal layer of the epithelium of the oral cavity.
[melano- + G. kytos, cell]

melanocyte

/mel·a·no·cyte/ (mel´ah-no-sīt) (mĕ-lan´o-sīt) any of the dendritic clear cells of the epidermis that synthesize tyrosinase and, within their melanosomes, the pigment melanin; the melanosomes are then transferred from melanocytes to keratinocytes.melanocyt´ic

melanocyte

(mĕl′ə-nō-sīt′)
n.
An epidermal cell capable of synthesizing melanin.

melanocyte

[mel′ənōsīt′, məlen′ōsīt]
Etymology: Gk, melas + kytos, cell
a body cell capable of producing melanin. Melanocytes are distributed throughout the basal cell layer of the epidermis and form melanin pigment from tyrosine, an amino acid. Melanin granules are then transferred to adjacent basal cells and to hair. Melanocyte-stimulating hormone from the pituitary controls the amount of melanin produced.
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Melanocyte

melanocyte

A specialised cell found at the dermal-epidermal junction—as well as the uvea, inner ear and meninges—which produces and stores melanin.

mel·a·no·cyte

(mel'ă-nō-sīt)
A pigment-producing cell located in the basal layer of the epidermis with branching processes by means of which melanosomes are transferred to epidermal cells, resulting in pigmentation of the epidermis.
[melano- + G. kytos, cell]

melanocyte

A pigment cell of the skin. A cell carrying MELANIN or capable of producing melanin.

melanophore

or

melanocyte

a type of pigment cell (or CHROMATOPHORE) that contains the pigment melanin, usually found in the skin of animals. It has a protective or camouflage function.

melanocyte

A pigment-bearing cell. It is found in the iris, the choroid, the retina, the sclera, the skin, etc. See melanin; choroidal naevus; iris naevus.

melanocyte

any of the dendritic clear cells of the epidermis that synthesize tyrosinase and, within their melanosomes, the pigment melanin; the melanosomes are then transferred from melanocytes to keratinocytes.

melanocyte-stimulating hormone (MSH)
a peptide from the anterior pituitary which influences the formation or deposition of melanin in the body, especially in amphibians and fish.
References in periodicals archive ?
Over a hundred genes are thought to play a role in melanin synthesis and melanocyte function; however, only 11 have been confirmed as key determinants of normal skin pigment variation through genome-wide association studies to date, [9] with some genes linked exclusively to either inter- or intra-population variation.
Increased sensitivity to peroxidative agents as a possible pathogenic factor of melanocyte damage in vitiligo.
Pigmented eccrine poroma occurring on the scalp: Derivation of melanocytes in the tu mor.
Insight into processes that control the production and lifespan of these melanocytes may unlock the secret to new treatments for this potentially fatal form of skin cancer.
The dermis contains hair follicles, sweat and oil glands, blood and lymph vessels, and some melanocytes.
3] Melasma is thought to be due to the stimulation of melanocytes by the female sex hormones oestrogen and progesterone to produce more melanin pigments when the skin is exposed to sun.
The treatment of vitiligo is based on the principles of stimulating the existing melanocytes in the affected area or repopulating it with functioning melanocytes.
established a distinct staining protocol designed to highlight only melanocyte pan-nuclear staining while eliminating all background staining.
However, it can be limited or reversed to a certain extent by first topical treatment then phototherapy or systematic medications or melanocyte transplantation and this has a 70 percent chance of improvement," he said.
KIT also plays a pivotal role in melanocyte migration, development and proliferation (Grichnik, 2006).
If the melanocyte reservoir at the top of the hair follicle can replenish the growing hair bulb pigment production continues.

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