Sentences with phrase «pigment melanin»

A team at Massachusetts General Hospital scrutinized the opioid system, the reward pathway hijacked by drugs such as heroin, because the researchers had earlier found that beta - endorphin and the skin pigment melanin originate from the same protein.

People with light skin, light eyes and light hair have less of the protective pigment melanin in their skin and are more susceptible to sunburns — and more apt to have moles.

These white cats with pink gums or eyelids, lack the protective pigment melanin.

Infant and toddler skin also has less of the brown pigment melanin, which helps protect the skin from ultraviolet light.

«Researchers look to improve detection of skin cancer lacking pigment melanin.»

Melanoma is a cancer that originates in melanocytes, the cells that produce the skin - color pigment melanin.

A lotion that stimulates production of the skin pigment melanin induces a deep tan in specially bred laboratory mice.

As soon as the calcium level exceeds a particular threshold value over a longer period of time, a signal cascade is triggered that initiates production of the body's tanning pigment melanin in the genetically modified cells.

However, researchers do know that young skin has lower levels of the skin - protecting pigment melanin and a thinner outer layer, which allows UV rays to more easily reach the melanin - producing cells known as melanocytes.

Unlike self - tanning lotions that essentially stain skin brown and provide minimal sun protection, the drug activates the production of the dark form of the skin pigment melanin, which absorbs UV radiation and diminishes damage to skin cells.

Copper plays a vital role in the production of the pigment melanin which is responsible for protecting our skin from sun damage.

The researchers published a study in the journal JAMA Dermatology that outlines key features linked to amelanotic melanoma, a form of skin cancer that lacks the brown or black color that stems from the pigment melanin.

Thomas added: «Nearly all animals can produce the pigment melanin.

Melanocytes, healthy skin cells that form the pigment melanin, come from neural crest cells, which are created in the spinal column.

The shape and chemical composition of these granules is identical to organelles found in cells called melanosomes; these being responsible for creating and storing the pigment melanin.

It arises from mutations affecting cells, called melanocytes, that produce the pigment melanin, which gives color to those body parts.

In the study, human melanocytes — the cells that produce the skin pigment melanin — were exposed to estrogen levels usually seen during pregnancy.

In 2015, researchers found that the wings of the dragonfly Zenithoptera lanei, though similar in appearance to Morpho wings, get their color from waxy crystals that cover layers of the pigment melanin.

He has picked up signs of relatively stable organic molecules such as cholesterol and the pigment melanin, but he has never seen the tell - tale building blocks of proteins.

Melanocytes play an important protective role in human skin: In sunlight they form the pigment melanin which adsorbs harmful UV radiation and thus prevents sunburn.

Among scientists studying human evolution, it has been almost universally assumed that the need to make more vitamin D at Northern latitudes drove genetic mutations that reduce production of the pigment melanin, the main determinant of skin tone, according to Elias.

«While is seems logical that the loss of the pigment melanin would serve as a compensatory mechanism, allowing for more irradiation of the skin surface and therefore more vitamin D production, this hypothesis is flawed for many reasons,» he continued.

Those with blue eyes also shared a number of other genetic markers in the same region — a stretch of DNA that regulates production of the pigment melanin.

But about 7 % of the offspring produced by unisexual reproduction responded differently than their parents to temperature and drug treatment; they also had other quirks, such as increased production of the pigment melanin, a known virulence factor.

The pigment melanin, in its most common form, provides black and brown color to skin, feathers, and hair.

Consequently, Europeans and Asians over the last 20,000 years evolved lighter skin through two dozen different mutations that decrease production of the skin pigment melanin.

UNC Lineberger researchers led by Nancy Thomas, MD, PhD, have identified key features linked to amelanotic melanoma, a form of skin cancer that lacks the brown or black color that stems from the pigment melanin.

Because phenylalanine is involved in the production of the pigment melanin, patients with PKU tend to have lighter skin, hair, and eyes than their siblings...

The epidermis makes new skin and the pigment melanin.

L - tyrosine is also involved in the production of thyroid hormone and the skin pigment melanin.

L - tyrosine is involved in the production of thyroid hormone and the skin pigment melanin.

Also in this layer, we find melanocytes, the cells responsible for the pigment melanin that determines skin color.

Greater amounts of the pigment melanin in the epidermal layer result in darker skin and reduce the skin's ability to produce vitamin D from sunlight [1].

The pigment melanin reduces the skin's ability to make vitamin D in response to sunlight exposure.

Enzyme components like tyrosinase convert to the pigment melanin, which provides not just our skin and hair color, but protects our skin from UV damage.

It regulates the synthesis of the pigment melanin, therefore it reduces the marks, scars, pimple spots etc on the skin.

The cells produce the pigment melanin, which is chemically linked to adrenaline (also known as epinephrine), the «fight or flight» hormone whose production is affected by changes in the animals» fear responses.

«Diagram I — IV» also investigates the body, specifically the skin pigment melanin.