Then, in 1982, stanley prusiner, a medical doctor studying scrapie a fatal, degenerative disease in sheep discovered that the disease was caused by proteinaceous infectious particles, or prions. Kiara gonzales anel vela valeri caceres lourdes torres jazmin liza forman agregados supramoleculares y son patogenas con. Quiz by al210691, updated more than 1 year ago 75 0 0 description. Because proteins are acellular and do not contain dna or rna, prusiners findings were originally met.
At one time, scientists believed that any infectious particle must contain dna or rna. Prions are infectious particles that contain no nucleic acids, and viroids are small plant pathogens that do not encode proteins. Semejanzas y diferencias entres virus, viriones y priones. Doc diferencia entre virus y priones silvana morales. Enfermedades causadas por viroides y priones by mariel. Enfermedades causadas por viroides y priones by yanick. Priones son unas particula infecciosa formada por una proteina denominada prionica.
The prion appears to be the first infectious agent found whose transmission is not reliant upon genes made of dna or rna. The accumulation of rogue proteins causes the brain tissue to become spongelike, killing brain cells and forming holes in the tissue, leading to brain damage, loss of motor coordination, and dementia see figure 6. Patogenos subcelulares virus, viroides y priones integrantes. Furthermore, virus can cause a wide array of infections while prions mainly cause neurodegenerative diseases in humans and animals. Viroids and prions article pdf available in proceedings of the national academy of sciences 7917. Prion, enfermedades por priones, glicosilacion, cerebro. Priones, encefalopatias espongiformes transmisibles, eeb, scrapie. Baixe no formato doc, pdf, txt ou leia online no scribd. Virus, viroides y priones by kiara carrillo on prezi. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Hola chicos aqui les dejo la segunda parte del capitulo 2 enfocada a los virus, viroides y priones, disfrutenla.
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