|
| |
| | Melanin - Wikipedia, the free encyclopedia |
 | | Melanin is the primary determinant of human skin color. | | | Some individual animals and humans have no or very little melanin in their bodies, which is a condition known as albinism. | | | Melanin influences neural activity and mediates the conduction of radiation, light, heat and kinetic energy. |
|
http://en.wikipedia.org/wiki/Melanin
(2612 words)
|
|
| |
| | Study 4 Melanin 95 |
| | The melanins of vertebrates and invertebrates can be observed in the skin, in fur, in hair, in feathers, in scales, in the choroid, in the peritoneum, in the pia mater, in the brain, and in melanomas (malign tumours of an intense black colour). | | | Since there is no reason to believe that natural melanin does not belong to the category of the polyarenes and polycationic polyenes, like pyrrol black and acetylene black, it is necessary to review all the chemical and biological analytic data gathered to date in the study of natural melanins (eumelanins, pheomelanins, allomelanins). | | | The EPR signal is present both in melanins prepared in the laboratory under most varied conditions and in pheomelanins of very varied origins. |
|
http://www.tightrope.it/nicolaus/melanin95.htm
(10653 words)
|
|
| |
| | GOT MELANIN ANYONE |
| | Many people are aware that the deep concentration of melanin in African peoples skin makes them black and enables them to use the rays of the sun more effectively than our less “melanated” counterparts, but what few know is that melanin is not only present in our skin but it permeates our whole physical being. | | | Melanin also causes seratonin to flow more effectively in the waking state so to “inspirience” more spirituality. | | | Melanin is present in each organ and regulates the workings of our brain. |
|
http://www.blackherbals.com/got_melanin_anyone.htm
(1087 words)
|
|
| |
| | Melanin Types |
| | Melanin is important also in other areas of the body, as the eye and the brain., but it is not completely understood what the melanin pigment does in these areas. | | | The lack of melanin causes albinism, with many disagreable conditions, as lack of skin protection and vision problems. | | | This cell is found in the skin, in the hair follicle, and in the iris and retina of the eye. |
|
http://www.newton.dep.anl.gov/askasci/bio99/bio99834.htm
(204 words)
|
|
| |
| | Melanin Properties - Afrocentrism and Pseudoscience (Skeptical Inquirer Spring 1992) |
| | The group claims that melanin is involved in the regulation of all psychological and physiological processes of the human body. | | | According to the group, in addition to the skin, hair, and eyes, melanin is widely dispersed in the human body, for example, in twelve sites in the brain, in all the major organs, and in all muscles. | | | There is also no evidence that the amount of melanin in internal organs correlates with the amount of melanin in the skin. |
|
http://www.csicop.org/si/9201/minority.html
(2128 words)
|
|
| |
| | Melanin |
| | The amount of melanin in the skin is one of the most variable of human traits, and many polygenes are involved. | | | Melanin acts as a filter to prevent damage to the delicate deeper layers of the skin, by penetration of ultraviolet light. | | | That’s how you get suntans because it’s the result of both thickening and increasing the melanin in the skin. |
|
http://www.sankofa.ch/texts/Melanin.htm
(1265 words)
|
|
| |
| | Facts About Albinism |
| | General health of a child and an adult with albinism is normal, and the reduction in melanin pigment in the skin, hair and the eyes should have no effect on the brain, the cardiovascular system, the lungs, the gastrointestinal tract, the genitourinary system, the musculoskeletal system, or the immune system. | | | The formation of melanin pigment follows a pathway like this, but the pathway is more complex and not all of the steps are known. | | | As a result, the first two critical conversions in the melanin pathway (tyrosine-->dopa-->dopaquinone) are not made and no melanin pigment forms; the pathway is "blocked" at the start. |
|
http://albinism.med.umn.edu/facts.htm
(9932 words)
|
|
| |
| | Melanin Vision Center - Eyewear protection that surpasses UV protection! |
| | melanin lenses and the neuro- physiological system of human vision. | | | When you look through a pair of melanin glasses, you will be surprised by the brilliant, undistorted color that you can see. | | | For lens applications this is a revolutionary concept which may be of significant therapeutic value. |
|
http://www.melaninvisioncenter.com/site/948939/page/354952
(3192 words)
|
|
| |
| | Melanin |
| | Melanin is the natural substance that gives color (pigment) to hair, skin, and the iris. |
|
http://adam.about.com/reports/000455.htm
(118 words)
|
|
| |
| | Why Tanning Pills Don't Work - Sunless.com |
| | Joe's mom, who is Irish, has melanocytes that make mostly the red-yellow pheomelanin form of melanin, which does not absorb UV radiation as well — and doesn't make her skin dark. | | | Any doctor who prescribes psoralens to someone merely for tanning purposes is putting their patient at serious risk for skin cancer. | | | Unlike Melanotan, pTpT has never undergone clinical trials on humans, so whether it will be an effective preventative treatment for skin cancer is unknown. |
|
http://www.sunless.com/safe/tanningpillsdontwork.php
(4702 words)
|
|
| |
| | melanin on Encyclopedia.com |
| | Melanin makes skin vulnerable to harmful ultraviolet rays. | | | A shift in thinking: melanin makes skin vulnerable.(Cutaneous Oncology) | | | Let HighBeam Research help you refine your search |
|
http://www.encyclopedia.com/html/m1/melanin.asp
(413 words)
|
|
| |
| | Photoprotective Technologies, Inc. |
| | Melanin lenses are superior to other sun lenses in their ability to filter colors in proportion to their damage — thereby reducing the risks of macular degeneration and cataracts — while still providing excellent color perception. | | | Melanin is the pigment in our hair, skin, and eyes that protects us against sunlight damage. | | | Please take your time and read all the information about melanin and how it can protect you and your family against future eye diseases by reducing the risks of sunlight-related macular degenerations and cataracts. |
|
http://www.melaninproducts.com
(144 words)
|
|
| |
| | MELANIN |
| | Your melanin identify you as a child of the Aten (sun). | | | Pale skin people on the other hand has a scanty amount of melanin and it clumps together in scanty clusters. | | | It is the very melanin in your skin which processes light and transmits it to the surface of your being. |
|
http://www.pyramidoftruth.com/MELANIN.html
(618 words)
|
|
| |
| | melanin -- Encyclopædia Britannica |
| | Melanins occur widely in the feathers of birds; in hair, eyes, and skin of mammals, including humans; in skin or scales or both of many fishes, amphibians, and reptiles; in the ink of cephalopods (octopus, squid); and in various tissues of many invertebrates. | | | The human skin is variously coloured and shows remarkable individual variations even within racial groups. | | | People without the ability to form the natural pigment melanin have a condition called albinism and are referred to as albinos. |
|
http://www.britannica.com/eb/article-9051870?tocId=9051870
(697 words)
|
|
| |
| | Black skin 'could fight disease' |
| | This could explain why dark skin evolved in humans and animals living in tropical areas, where the threat of disease is greatest. | | | Dr Mackintosh believes that melanin performs a similar function in humans and other large vertebrates. | | | Melanosomes from human skin have been shown to inhibit micro-organisms in laboratory tests. |
|
http://cogweb.ucla.edu/ep/Melanin.html
(443 words)
|
|
| |
| | Melanin makes skin vulnerable to harmful ultraviolet rays |
| | Brash said he had been curious why people with dark hair and fair skin were not as vulnerable to skin cancer as fair skinned blondes and redheads. | | | Melanin makes skin vulnerable to harmful ultraviolet rays | | | Melanin filters out UV radiation, but the melanin in hair follicles, particularly in light hair, actually increases the sun damaging effects of UV rays and causes cell death in the hair follicle, said Douglas Brash, principal investigator and professor of therapeutic radiology, genetics and dermatology at Yale School of Medicine. |
|
http://www.eurekalert.org/pub_releases/2004-10/yu-mms101304.php
(298 words)
|
|
| |
| | Macular Degeneration : Macular Degeneration International : The Foundation Fighting Blindness |
| | I learned that melanin occurs naturally in our retina, skin and hair and that as we age, we lose melanin and it's protective effects. | | | I learned that all wavelengths of light can hurt the retina if the exposure is high enough - I thought it was only UV light I had to be concerned with. | | | I learned more technical information about Melanin lenses from Dr. James Gallas, the inventor, who sent me all the research on accelerated testing of light exposure to the retina. |
|
http://www.maculardegeneration.org/melanin.html
(592 words)
|
|
| |
| | Sun Exposure: Precautions and Protection, HYG-5550-97 |
| | Blondes, redheads, and people with fair skins have less melanin and, therefore, burn more quickly. | | | Blondes, redheads, and individuals with fair skin burn readily. | | | Three types of skin cancer exist: basal, squamous, and melanoma. |
|
http://ohioline.osu.edu/hyg-fact/5000/5550.html
(2522 words)
|
|
| |
| | melanin. The New Dictionary of Cultural Literacy, Third Edition. 2002 |
| | ‡ The amount of melanin present in the skin determines the color of a person’s complexion: people with a large amount have dark skin, whereas those with very little have fair skin. | | | Produced by special skin cells that are sensitive to sunlight, melanin protects the body by absorbing ultraviolet radiation from the sun. |
|
http://www.bartleby.com/59/22/melanin.html
(163 words)
|
|
| |
| | GaiaNews - Words We Speak - Melanin |
| | The Skin We're In We humans are mesmerized by melanin, the pigment that gives color to our skin, but almost always for quite the wrong reasons. | | | There's a pseudoscientific idea floating around that says that if you have lots of melanin--the pigment that colors your skin and hair and the irises of your eyes-- you will be smart and exquisitely attuned to life's rhythms and have a warm, outgoing personality. | | | Now, pause to read this, again, slowly and reflectively considering how you will honor and bring this wisdom more alive through YOUR LIFE, today! |
|
http://fyicomminc.bizland.com/gaianews/speech4.html
(938 words)
|
|
| |
| | Re: How did human beings have different skin colors if we evolved the same |
| | Skin color is determined by the amount of melanin in the skin. | | | However, those with darker skin have an increased rate of melanin deposition. | | | Sun exposure also increases the rate of melanin deposition, the process called tanning. |
|
http://www.madsci.org/posts/archives/dec97/877963549.Dv.r.html
(208 words)
|
|
| |
| | Melanin's role in albinos pigmentation (lack of skin pigmentation) |
| | The melanocytes of the epidermis are crucial in determining skin pigmentation (color). | | | People with albinos pigmentation must be especially careful to protect their skin. | | | These two forms of melanin are often both present together, and occur in varying proportions. |
|
http://www.pg.com/science/skincare/Skin_tws_16.htm
(282 words)
|
|
| |
| | Pigmentation.net: Information about skin pigmentation and skin lightening agents |
| | The melanocyte to keratinocyte ratio varies from one region to another within the human body. | | | MSH treatment accelerates melanin synthesis and causes the skin to visibly darken. | | | Differences in skin color are due mainly to differences in the number of melanin granules in the keratinocytes. |
|
http://www.pigmentation.net
(621 words)
|
|
| |
| | Melanin-Concentrating Hormone -- Neurotransmitter.net |
| | Furthermore, to determine whether GALP regulates feeding behaviour via orexin/hypocretin neurones, the feeding behaviour of rats was studied following GALP i.c.v. | | | This receptor is enriched in brain areas that are involved in the modulation of mood and affect, suggesting that MCH-dependent signaling may influence neurobiological mechanisms underlying fear and anxiety processes. | | | The observation that loss of orexin (hypocretin) neurons causes human narcolepsy raises the possibility that other acquired disorders might also result from loss of hypothalamic neurons. |
|
http://www.neurotransmitter.net/melanin.html
(17050 words)
|
|
| |
| | Melanin |
| | Present in skin and hair of mammals, chitin of many insects | | | Coat color variants are caused by temporal regulation of melanin production during hair follicle growth, e.g. |
|
http://www.life.umd.edu/faculty/wilkinson/BSCI338/L8ltproduct/tsld010.htm
(37 words)
|
|
| |
| | Optical Absorption of Melanin |
| | A black-to-dark-brown insoluble material found in human black hair and in the retina of the eye. | | | Cutaneous melanosomes are variable and may have 1/4th to 1/10th the melanin concentration of the RPE melanosomes. | | | The molecular structure of the extended melanin polymer is neither well characterized nor unique, so citing the concentration as [moles/liter] is difficult. |
|
http://omlc.bme.ogi.edu/spectra/melanin
(634 words)
|
|
| |
| | Hair pigmentation melanin and hair color |
| | Melanin granules in the cortex of a hair | | | White hairs contain no melanin at all: their whiteness is an optical effect, due to the way they reflect the light. | | | As we have seen, the color of hair is due to the presence in the cortex of granules of a pigment called melanin, which is formed in special pigment-producing cells (melanocytes) in the hair bulb during the growing phase (anagen) of each hair. |
|
http://www.pg.com/science/haircare/hair_twh_59.htm
(368 words)
|
|
| |
| | Word! Melanin |
| | This natural pigment is what gives your skin its special hue. | | | The darker your skin, the more melanin you have. | | | Ever wonder where your skin gets its color? |
|
http://kidshealth.org/kid/word/m/word_melanin.html
(65 words)
|
|
| |
| | Melanocyte - Wikipedia, the free encyclopedia |
| | With a process called melanogenesis, they produce melanin, a pigment in the skin, eyes, and hair. | | | This is completely different to the surrounding skin cells (keratinocytes)and means that all melanocytes had the capacity to migrate widely in the embryo. | | | The typical density of melanocytes is between 1000 and 2000 cells per square mm of skin, comprising between 5-10% of cells in the skin. |
|
http://en.wikipedia.org/wiki/Melanocyte
(291 words)
|
|
| |
| | BBC - h2g2 - Determination of Eye Colour |
| | Melanin absorbs light and is the principle pigment in hair and skin. | | | Albinism is where there is no melanin in the melanocytes at all. | | | In a green eye (or a hazel one) there is a variable level of melanin, so that some of the light is absorbed by the melanin and some is scattered by the collagen. |
|
http://www.bbc.co.uk/dna/h2g2/A734933
(1530 words)
|
|
| |
| | MedlinePlus Medical Encyclopedia: Urine melanin |
| | This disease is usually visible on the skin, but if the malignant cells metastasize to internal areas of the body, you may never see the cancer. | | | If the skin cell tumors are growing within the body (especially within the liver), melanin may be produced in sufficient quantities to be present in the urine. | | | There are no risks associated with this test. |
|
http://www.nlm.nih.gov/medlineplus/ency/article/003365.htm
(514 words)
|
|
| |
| | Melanin transfer process found by Japanese team |
| | Melanin is the substance that causes spots and freckles on skin and allows people to tan. | | | The Institute of Physical and Chemical Research (Riken) has uncovered substances that transfer melanin pigment between cells, a discovery could lead to the development of medicines that could help maintain skin fairness and keep hair from turning gray. | | | Instead, the melanin is produced within cells called melanocytes before being transferred to skin and hair cells by proteins. |
|
http://www.medicalnewstoday.com/medicalnews.php?newsid=16435&nfid=rssfeeds
(168 words)
|
|
| |
| | Example: Melanin |
| | The reverse condition (often seen as a color phase variation in rodents and some carnivores) is melanism, in which more than the usual amount is made. | | | These cells migrate during development to specific places: one such place is the deep layers of the skin. | | | This image shows melanocytes and keratinocytes in the deepest layer (stratum basale) of the skin. |
|
http://education.vetmed.vt.edu/Curriculum/VM8054/Labs/Lab3/Examples/exmelano.htm
(421 words)
|
|
| |
| | Illuminant estimation using iso-melanin-lines |
| | The second parameter, which determines the skin colour, is the melanin concentration. | | | Figure 4: Measured skin chromaticity distribution and modelled iso-melanin-lines for several melanin concentrations and a 3700K light source. | | | The CCT is then found by minimising equation 4, replacing d(M) by d(CCT) and |
|
http://www.vision.auc.dk/~mst/Publications/fg2000html/node5.html
(437 words)
|
|
| |
| | melanin |
| | melanin: the brown-black pigment found in the skin, eyes, and hair. |
|
http://www.webref.org/anthropology/m/melanin.htm
(78 words)
|
|
| |
| | MedlinePlus Medical Encyclopedia: Melanin |
| | Melanin is a natural substance that gives color (pigment) to hair, skin, and the iris of the eye. | | | Updated by: Jonathan Kantor, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. |
|
http://www.nlm.nih.gov/medlineplus/ency/article/002256.htm
(184 words)
|
|
| |
| | Untitled Document |
| | Photoacoustic calorimetry is used to examine the energy dissipation in melanin under physiological conditions (pH = 7.2) following irradiation by ultraviolet (UV) and visible (VIS) light. | | | These results establish that the photochemistry of melanin is wavelength-dependent. | | | At 351 nm, most of the energy was released as heat; a small amount of energy was retained (5% ± 5%). |
|
http://www.chem.duke.edu/~jds/papers/124.html
(146 words)
|
|
| |
| | melanin - OneLook Dictionary Search |
| | Melanin : Visionary, for the Study of Vision [home, info] | | | melanin : The On-line Medical Dictionary [home, info] | | | melanin : Dictionary of Cancer Terms [home, info] |
|
http://www.onelook.com/?w=melanin
(257 words)
|
|
| |
| | Color Genes in the Poodle |
| | These genes do not affect the synthesis of melanin, but rather the structure and organization of the pigment granules. | | | The genetics of coat color is largely concerned with the genes that affect the number, shape, arrangement or position of these granules, or the type of melanin they contain. | | | For some reason, the melanin that is made is primarily the dark eumelanin. |
|
http://www.netpets.com/dogs/reference/genetics/pdlcolor.html
(1381 words)
|
|
| |
| | WHAT IS MELANIN |
| | Melanin is an important Key to Human Survival, and the only reason why JAH made Black people black, therefore it is a Blessing and can never be a curse. | | | The truth about Melanin is up to now a closely kept secret, for Melanin is Blackness itself, that is to say, the single chemical responsible for colouring the skin pigments in black people, melanin is the human's only protection from the natural rays of the sun. | | | It also possesses the unique ability to absorb various energy sources and convert these absorbed energies in to re-usable energy, this includes mediums such as; Music vibration and sound waves, the sun rays, sun heat, light rays etc. |
|
http://www.rastafarian.net/what_is_melanin.htm
(128 words)
|
|
| |
| | Dictionary of Difficult Words - melanin |
| | disease marked by deposition of melanin in tissues. | | | Red and yellow were the colours of Macedonia's flag when the republic was part of Yugoslavia. |
|
http://tiscali.co.uk/reference/dictionaries/difficultwords/data/d0008125.html
(174 words)
|
|
| |
| | Upstream: Pride and prejudice. |
| | Afrocentrism and other "multicultural" programs repudiate European institutions, including Western scholarly norms, and embrace instead an alternative "black reality." This Afrocentric approach is pervasive in inner-city schools in Atlanta, Milwaukee, Washington, DC., and elsewhere. | | | D. Schools Superintendent Franklin Smith hired consultant Abena Walker for $250,000 to develop a pilot Afrocentric program for the students in his charge, who rank among the nation's poorest achievers. | | | It even appears in mixed-race, middle-class suburbs like Prince George's County, Maryland, where a speaker at an Afrocentrism conference told how melanin, the coloring agent in skin, helps blacks "speak and read faster," as well as "glide in the air like a Magic Johnson or hit top speeds like Florence Joyner." |
|
http://www.mugu.com/cgi-bin/Upstream/People/DSouza/dsouza-pride.html
(2950 words)
|
|
| |
| | MELANIN |
| | MELANIN IS THE BLACK CHEMICAL IN OUR SKIN, HAIR, AND EYES. | | | THE WORD MELANIN MAY BE DEFINED AS FOLLOWS: MELANO (GREEK WORD) MEANING BLACK. | | | ANIN IS DERIVED FROM A SIMILAR WORD CALLED AMINE. |
|
http://www.angelfire.com/sc/rotation/page2.html
(92 words)
|
|
|
