Tanning, skin cancer

Tanning, skin cancer

The topmost layer of our skin is the epidermis, which contains melanocytes.

Biology

Keywords

skin, tanning, skin cancer, disease, melanocyte, melanoma, birthmark, suntan lotion, defense, mutagenic, epidermis, Keratinized epithelium, epithelial tissue, dermatologist, metastasis, human, biology

Scenes

  • - In the wider sense, these are sharply circumscribed, chronic lesions of the skin where the color or the surface is different from that of the surrounding skin. Some of them are present at birth, while others are formed later. In the ordinary sense, only melanocytic nevi are called birthmarks or moles.

  • - Specialized, pigment-producing cells in the epidermis. The produced pigments are transferred to other cells in the skin, thereby protecting their DNA from the damaging effects of sunslight. One of the components of sunlight is UV radiation, which damages cellular DNA and therefore causes mutations (mutagenic effect).

  • - In the wider sense, these are sharply circumscribed, and chronic lesions of the skin where the color or the surface is different from that of the surrounding skin. Some of them are present at birth, while others are formed later. In the ordinary sense, only melanocytic nevi are called birthmarks or moles.
  • - Specialized, pigment-producing cells in the epidermis. The produced pigments are transferred to other epithelial cells, thereby protecting their DNA from the damaging effects of sunlight. One of the components of sunlight is UV radiation, which damages cellular DNA and therefore causes mutations (has a mutagenic effect).

  • - UV radiation damages cellular DNA, which causes uncontrolled cell division and tumor formation.
  • - A malignant tumor that develops from melanocytes. It commonly causes metastases. It is treated surgically, but in case the metastases are widepspread, chemotherapy, immunotherapy and radiation therapy may also be necessary.

  • - Specialized, pigment-producing cells in the epidermis. The produced pigments are transferred to other cells in the skin, thereby protecting their DNA from the damaging effects of sunslight. One of the components of sunlight is UV radiation, which damages cellular DNA and therefore causes mutations (mutagenic effect).
  • - UV radiation damages cellular DNA, which causes uncontrolled cell division and tumor formation.
  • - A malignant tumor that develops from melanocytes. It commonly causes metastases. It is treated surgically, but in case the metastases are widepspread, chemotherapy, immunotherapy and radiation therapy may also be necessary.
  • - In the wider sense, these are sharply circumscribed, and chronic lesions of the skin where the color or the surface is different from that of the surrounding skin. Some of them are present at birth, while others are formed later. In the ordinary sense, only melanocytic nevi are called birthmarks or moles.
  • - Specialized, pigment-producing cells in the epidermis. The produced pigments are transferred to other epithelial cells, thereby protecting their DNA from the damaging effects of sunlight. One of the components of sunlight is UV radiation, which damages cellular DNA and therefore causes mutations (has a mutagenic effect).

Narration

The topmost layer of our skin is the epidermis, which contains melanocytes. These are specialized, pigment-producing cells.

When the skin is exposed to UV radiation, the production of pigments in melanocytes is increased and the skin darkens – this is how tanning occurs. The pigments produced by melanocytes are transferred to other cells in the skin, thereby protecting their DNA from the damaging effects of sunshine.

UV radiation is one of the components of sunshine. This radiation damages cellular DNA and therefore causes mutations, which may lead to the formation of skin cancer. Skin cancer often results from mutations that take place in melanocytes. UV radiation causes the formation of thymine dimers in the DNA of melanocytes. This causes a disturbance in protein synthesis, which increases the risk of cancer, that is, uncontrolled cell division and the formation of malignant tumors. tumor cells can be transferred to other parts of the body, including organs, through blood and lymph circulation. These cells can cause the formation of further tumors. This is called metastasis.

When recognized early, skin cancer can be treated successfully in most instances. Therefore, it is very important to have birthmarks and moles checked regularly by a doctor. Melanomas are removed surgically. When not treated early enough, melanomas commonly metastasize, making them one of the most dangerous types of cancer.

In order to prevent skin cancer, it is highly recommended that we should use suntan lotion when we are exposed to sunshine. Suntan lotion prevents UV radiation from reaching the skin, thereby protecting it against the mutagenic, or DNA-damaging, effect of UV rays.

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