Neuromelanin: The Dark Pigment in the Brain
Neuromelanin is a pigment found in the brain that imparts color to neurotransmitting cells. Discovered by Jan Evangelista Purkyne, a Czech anatomist, in 1838, this dark pigment was initially believed to have no significant function. However, recent studies have shed light on the potential correlation between the loss of neuromelanin and the progression of Parkinson’s disease. It is speculated that, similar to how melanin safeguards the skin from harm, neuromelanin may play a protective role against cell death.
Oculocutaneous Albinism
Oculocutaneous albinism is a genetic disorder that causes a lack of pigmentation in the skin, hair, and eyes. This condition can be inherited when both parents carry the recessive gene for albinism, and it can affect individuals of any ethnicity to varying degrees. People with oculocutaneous albinism are particularly susceptible to sun damage and skin cancer due to their lack of melanin, and they also commonly experience vision problems such as involuntary eye movements and sensitivity to light. To protect their eyes, individuals with albinism should wear sunglasses whenever they are exposed to natural light, and it is also important for them to apply sunscreen to their skin.