![]() ![]() Papillomaviruses are very rent to adverse conditions and can survive for long periods in the environment. "The virus is transmitted through direct contact with an infected pet or the pet’s environment." However, pets with immature immune systems, such as young dogs and puppies, and those who are immunocompromised (have a reduced ability to fight infections), are more prone to developing papilloma warts. All animals and people carry various viruses asymptomatically (without any clinical signs). Your dog or cat has been infected with one of the papillomaviruses. Why did my pet develop a papilloma tumor? One of the best-known are warts on human feet (plantar wart). Each species has its own viruses and their related tumors. There are many types of papillomaviruses, and they occur in all species of animals, including people. The virus activates growth-promoting genes in the DNA (called oncogenes) and simultaneously inactivates suppressor genes that would normally limit cell proliferation and alters the genes that regulate normal, programmed cell death. What causes papillomas?Īfter invading the cells of the dog or cat (the host), papillomaviruses insert their genetic information into the host cell's DNA and upset the normal processes of cell division, so the cell divides abnormally and more frequently. Papillomas are uncommon in cats and common in dogs. Some papillomas may need surgical removal if they become inflamed or infected or fail to regress over time. The tumors often disappear spontaneously because the animal slowly develops immunity to them. Papillomas are benign, sometimes multiple, tumors caused by viruses. ![]()
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