Viruses are called the smallest organisms, most of which are unrealistic to see, even using an ordinary microscope. They consist of a small amount of DNA and RNA genes that are in a protein capsule. These viruses penetrate into living cells, where infections subsequently start to multiply. There are alsoviruses that cause cancer, which can put their DNA into the cells, soon provoking the onset of cancer.
What oncoviruses exist?
Oncoviruses are infections that cause the appearance of cancer, as well as viruses that contribute to the development of inflammatory processes that are chronic. Each type of cancer virus carries out infection only a certain type of cells. There are such types of oncoviruses:
Polyoma virus- Pathology caused by VC and JC viruses. VC virus is often affected by children. Initially, the development of respiratory infection begins without signs of renal pathology. Then, under the influence of the VK polyoma virus, kidney damage begins. Poliomavirus JC is able to cause a progressive multifocal encephalopathy in humans. Poliomavirus is not accompanied by inflammatory processes in the body.
- The virus of the papilloma (HPV)Is the most common viral infection that affects the genital tract. Sexually active men and women can get an infection, and even be infected again. For the transmission of the virus is not considered necessary to penetrate during intimacy. It is enough to have a solid genital contact. Often such a virus passes by itself from two months to two years. A small part of the infection can persist in the body and provoke the onset of cancer, the most common of which is cervical cancer in women.
- Retrovirus- can carry genetic information both horizontally and vertically, unlike other oncoviruses. This family of RNA-containing viruses, the most famous representative of which is the human immunodeficiency virus. Retroviral infection can be both benign, and provoke the rapid development of cancer, which end in a lethal outcome.
- The Epstein-Barra virusIs a type of herpes virus that provokes mononucleosis (a disease that can be transmitted during coughing, sneezing and using one of the cutlery). The concentration of the infectious disease is localized in white blood cells.
What types of cancer develop due to the virus?
Oncoviruses can be the cause of cancer, depending on their type:
- The polyoma virus can cause nephropathy, if a person has implants and immunodeficiency.
- The Epstein-Barr virus can provoke the appearance of cancer of the nasopharynx and the oral cavity, the stomach.
- The papilloma virus can provoke the appearance of cancer of the skin, mouth, pharynx, uterus, genital organs.
- Retrovirus promotes the emergence of HIV, which infects and destroys T-lymphocytes, leading to a decrease in the activity of the human immune system and initiating the onset of AIDS. HIV does not transform cells, but the diseased are often prone to certain types of cancer, such as lymphoma and Kaposi's sarcoma.
Prevention of virus activation and cancer development
There is a primary cancer prevention:
- correction of nutrition and lifestyle;
- to give up smoking;
- reduction of exposure to carcinogenic substances;
- increase the protective function of the body to harmful substances in an almost healthy population.
- the definition and therapy of diseases in the precancerous stage;
- Observation of high-risk groups for oncology;
- diagnosis of cancer in the early stages.
Helps prevent the occurrence of relapses and metastasis in patients with cancer, as well as the prevention of recurrence of cancer in recovered patients with oncology.
There are also sanitary and hygienic cancer prevention, which is responsible for protecting the environment from carcinogenic substances; dietary prevention cancer - specially developed and practical nutrition recommendations that can reduce the risk of cancer; medical prevention of cancer - comprehensive disease control measures, which are carried out by physicians, in order to reduce morbidity and mortality from cancers; chemoprophylaxis of cancer - the invention and application in practice of developed drugs and drugs that can reduce the risk of cancer.
In order to preventpapillomovirus infectionrecommended to carry out vaccination. Do it better before the active sex life, that is, before the emergence of conditions that are favorable for infection. Immunity to the disease is produced in almost 100% of vaccinated people. Vaccination is carried out in three stages and is considered complete, if fully carried out during the year.
To date, no vaccine has been developed that can reduce the risk of infectionretroviral infection. The most important thing is to remember the necessary safety during sexual intercourse. Using a condom will help prevent diseases caused by retrovirus. Also, there is a risk of transmission of the virus through the blood, therefore in medicine it is forbidden to use reusable syringes, needles, systems for blood transfusion. Blood donors also undergo a thorough check for the presence of a retrovirus.
Experts say that to avoid infectionthe Epstein-Barr virusit is almost impossible, however, for the prevention, it is recommended to increase the body's resistance to viruses so that the disease passes with the least consequences. It can be tempering the body from childhood, avoiding stressful situations, properly conducted personal hygiene, walking outdoors and taking vitamins necessary for the body.
Is it possible to get cancer from a sick person, or from a carrier of the virus?
The fact that the people around are safe near the oncological people has already been repeatedly proven and confirmed by the conducted experiments. In the 19th century, a French surgeon extracted an extract of breast cancer. Then he introduced it to himself, and several more people, who participated voluntarily, this extract under the skin. In the place where the injection was carried out, acute inflammatory processes began, which took place several days later. The experiment was soon carried out again and the results were the same.
Modern scientists also conducted studies that confirmed that it is impossible to get cancer from another person. Medical workers analyzed 35, 00 blood transfusion procedures conducted for 35 years. Three percent of donors had cancer, but none of the people who transfused the blood of cancer patients were infected.
Another important conclusion after the medical research - genetics on the appearance of cancers affects much more than viruses and other factors. This means that the oncovirus that has got into the body has practically zero significance in the development of cancer, while a breakdown in the genetic code is a key one.
Viruses,cancer-causing- very dangerous for human life and health. Their prevention and timely diagnosis will help to minimize the risk of serious consequences. If any signs of a viral infection appear, it is necessary to urgently contact a competent specialist and take tests that will help them identify and take the necessary measures in time..