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Skin cancer: not only and old person's disease

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Introduction

College of Natural and Applied Sciences Department of Biology, Chemistry and Allied Health Sciences Not an Old person's Disease In Partial Fulfilment of The Course BIOL395 Genetics Section A Facilitator: Ms. Jayann Brown By: Paul Scavella I.D. #: 24063087 Date: April 2, 2009 Name: Paul A. Scavella II Cancer is the number one killer in America today. We can say the known causes of cancer are radiation, sunlight, pollution, cigarette smoking and improper diets. I will explain the major causes of cancer. Cancer is a term used for diseases in which abnormal cells divide without control and are able to invade other tissues. Cancer cells can spread to other parts of the body through the blood and lymph systems. Cancer is not just on disease but many diseases. There are more than 100 different types of cancer. Most cancers are named for the organ of the type of cell in which they start, for example, the cancer that begins in the colon is called colon cancer; cancer that begins in basal cells of the skin is called basal cell carcinoma. Cancer types can be grouped into broader categories the main categories of cancer include carcinoma which is cancer that begins in the skin or in tissues that line or cover internal organs. Sarcoma is cancer that begins in bone, cartilage, fat, muscle, blood vessels, or other connective or supportive tissue. Leukaemia, this is a cancer that starts in blood-forming tissue such as bone marrow and causes large numbers of abnormal blood cells to be produced and enter the blood. Lymphoma and myeloma cancers are cancers that begin in the cells of the immune system. ...read more.

Middle

It would be harder to kill all the cancer cells that have reproduced and divided and invaded other body organs and tissues. After removing the malignant tumor you would have to go under all kinds of procedures to kill the remaining cancerous cells such as radiation and chemotherapy. Under normal circumstances our bodies might need to make more cells in the event that we are injured and body tissues are lost. The way we heal is by the regeneration of cells basically. In an event where a person gets a deep cut the cells are regenerated and a mass of cells grow where the skin tissue was lost. The skin will not heal as it looked before unless the person received stitches, but you will be able to see new skin forming which at the most basic level is just cells dividing. When a person is burnt the same process will occur. All these calamities add up to a loss of cells so basically the body might need to make more cells when the body loses some cells irregularly by some unfortunate series of events. Proto-oncogenes are normal cellular genes, these genes code for proteins that stimulate normal cell growth and division. The proto-oncogenes are the genes whose products stimulate normal progress through the cell cycle. Cyclins and cyclin-dependent kinases (CDK) are examples of products encoded by proto-oncogenes. The Cyclin-CDK complex act as maturation-promoting factor which deals directly with the maturation of cells and their division. So if the proto-oncogenes are functioning properly no cancerous cells will be given rise to. So if this proto-oncogene malfunctions or becomes mutated into the cancer causing cell cycle oncogene gene then that person may acquire cancer. ...read more.

Conclusion

So they would just have to be aware and stay away from any risks for skin cancer. If a person were to ignore the risks for skin cancer and sunbathe or take part in other risky behaviour it still does not mean that they will automatically get cancer some day. This person is just giving themselves more of a chance to contract skin cancer at the end of the day if cell cycle genes become mutated or the cells themselves become mutated, but this doesn't always happen and doesn't always have to be the case. Cancer is a tricky thing and it is very important to know about it. Important things to know are both good and bad. Cancer is a bad thing and it is very important to know about it so that we as humans can't prevent it by knowing how it happens and what the risks are and to stay away from those risks as far as possible. People need to know to protect themselves and many of the popular beliefs among laymen are not true and they need to educate themselves about these truths. Skin cancer is not only an "Old People's Disease". It is true that cancer is usually for old people because of how cancer works and manifests itself after years of accumulating mutations in their genes but contrary to that belief it is becoming prevalent among the young people and they need to know that they are at risk as well; because they may be predisposed and that in itself speeds up the process. Cancer is a killer it discriminates against no man. ...read more.

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