Melanin

SCREENING OF ANTAGONISTIC ACTIVITY OF MARINE ACTINOMYCETES AGAINST CLINICAL PATHOGENS Ramarajan K*,Karthick .V * P.K.Senthilkumar, Department of Microbiology,Faculty of Sciences, Annamalai University Tamil Nadu, India. Email: ramsmicr@gmail.com Abstract The present study was conducted to examine the ability of six promising indigenous isolates of marine actinomycetes (NA-1, 2, 3, 4 and TA-1, 2) as probiotics in nature. The actinomycetes isolated from these eco systemsare capable of producing

condition is more noticeable on a dark-skin person than a light-skin person.Although , vitiligo affect all other race but, the condition is not life -threatening or contagious. Normally the color of hair and skin is detemined by melanin. Vitiligo occurs when the cell that produce melanin die or stop functioning.It can be very stressful and make you feel ugly and not highly of yourself. Vitiligo is a disorder which , in the skin destoryed. Sometimes the genes of the immune system can play a role in this diseases

affect the skin on any part of the body examples would be hair, the insides of the mouth and even the eyes (Mayo Clinic Staff, 2015). Normally, the color of hair, skin and eyes is determined by melanin. Vitiligo occurs when the cells that produce melanin die or stop functioning (Mayo Clinic Staff, 2015). Melanin is responsible for giving humans their skin, hair and eye color, this pigment is mainly composed of melanocytes cells in the skin and is sometimes referred to as a chemical as part of the metabolizing

Albinism is not a contemporary issue but it erupted into public consciousness recently, when the reports of some undercover operations revealed the unwarranted killings of persons with albinism for lucrative purposes. The existence of myths and misconceptions surrounding their appearance has led to multiple and intersecting forms of discrimination thereby violating their fundamental rights and freedoms. They can seek refuge under the various human rights mechanisms enumerated subsequently but considering

when a child inherits one defective gene, which is responsible for producing Melanin, from each parent. Melanin is responsible for absorbing ultraviolet rays so the skin isn’t damaged. Thirdly, Albinism has many negative symptoms. People with Albinism don’t tan when exposed to sun and easily get sunburns. They have a greater risk for skin cancer than people without Albinism. The retina doesn’t develop correctly when the Melanin pigment isn’t present. People with

cells that produce melanin, which gives skin its pigmentation and shields the deeper layers of skin from the damaging effects of ultraviolet radiation. When skin is exposed to ultraviolet radiation, melanocytes increase their production of melanin, which generates darker pigmentation of the skin. Ultraviolet radiation stimulates malignant changes within the melanocytes by mutating DNA, stimulating cutaneous growth factors, decreases immune defenses, and promotes species of melanin that cause DNA impairment

In the world we have over 5 billion people. And most of those people have different skin color, and most of those people live in different places. We are told we have lighter and darker skin compared to others. We are taught and told that there have been many incidence of segregation and discrimination and racism. For what? Skin color. We have no control of what skin color we have. It’s not our choice if we want to have light and dark skin. And segregation and discrimination for something we can’t

According to ¨The Genetic Basis of Adaptive Melanism in Pocket Mice”by Michael W. Nachman, Hapi E. Hoekstra, and Susan L. DÁgostino in their article addresses the differences in melanin frequencies from a population of pocket mice. The authors state how in the environment light coloration of mice were original best fit for the environment. This is because the light fur coloration allowed them to be more camouflaged into the ground of the environment thus not allowing predators to visually hunt them

Albinism is a congenital disorder associated with partial or total lack of pigmentation of the skin. Scientifically, this is referred to as the Oculocutaneous albinism (OCA) (). This condition is genetically inherited, passed from parents with carrier genes or those already with the disorder to their off springs. OCA is subdivided into two categories, OCA1 and OCA 2. OCA 2 is the most prevalent type of albinism found in Africa. People living with albinism are more susceptible to negative social

NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE The Evolution of Human Skin Color by Annie Prud’homme-Généreux Life Sciences Quest University, Canada Part I Skin Cancer “Stop it!” called Tatiana, playfully. Her boyfriend, Zach, was inspecting her skin very carefully. “Look,” he answered her, his voice taking on a more serious tone. “Today a woman walked into the clinic for her annual physical. Everything about her seemed ne. She leads a balanced lifestyle, she eats well, she exercises: