Viruses, bacteria, and prions differ in many ways. There are also multiple similarities between them. First off, how much do you know about viruses?
Viruses have various shapes: spheres, rods, or spirals. Viruses have either DNA or RNA, but not both, a protein coat that incases the nucleic acid, and some even have a nuclear envelope. Sometimes viruses have spikes that they use to attach onto their host. Viruses undergo the lytic and lysogenic cycles when they reproduce. The lytic cycle goes through five stages: attachment, penetration, biosynthesis, maturation, and release. According to Essentials of Biology, “During attachment the capsid combines with a receptor in the bacterial cell wall. During penetration, a viral enzyme digests away part of the cell wall, and viral DNA is injected into the bacterial cell. Biosynthesis of viral components begins after the virus inactivates host genes not necessary to viral replication. The machinery of the host cell then carries out viral DNA replication and production of multiple copies of the capsid protein subunits. During maturation, viral DNA and capsids assemble to produce several hundred viral particles. Lysozyme, an enzyme coded for by a viral gene, disrupts the cell wall, and release of phage particles occurs. The bacterial cell dies as a result.” The lysogenic cycle is the same process, except for it has a dormant period known as integration. The phage is latent and not actively reproducing. A disease caused by viruses could include influenza. Influenza is commonly known as the flu. Influenza is spread by contact with another person who has the virus. It can also survive on surfaces for a short period, and if contracted by another person it can enter the nasal passage and can infec...
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"Structural Biochemistry/Prion Protein Misfolding and Disease." - Wikibooks, open books for an open world. N.p., n.d. Web. . .
"NINDS Transmissible Spongiform Encephalopathies Information Page." Transmissible Spongiform Encephalopathies Information Page: National Institute of Neurological Disorders and Stroke (NINDS). N.p., n.d. Web. . .
"." Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, n.d. Web. . .
"Creutzfeldt-Jakob Disease Fact Sheet." : National Institute of Neurological Disorders and Stroke (NINDS). N.p., n.d. Web. . .
Lerner, K. L. & Lerner, B. W., (2008). Tay-Sachs disease. The Gale Encyclopedia of Science (4th ed.). Detroit
"Lead." Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 18 Mar. 2004. Web. 28 Apr. 2014. http://www.cdc.gov/nceh/lead/
Walton, Sir John. Brain's Diseases of the Nervous System. Oxford University Press. New York, 1955, pp. 365.
Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 15 Feb. 2012. Web. 20 Feb. 2014.
Creutzfeldt-Jakob is known as a prion disease. Prion is a protein that occurs normally inside the brain, however
WORLD HEALTH ORGANISATION, 1997. Tabular list of neurological and related disorders. In: WORLD HEALTH ORGANISATION, ed. Application of the International Classification of Diseases to Neurology. Canada: World Health Organisation, p. 153.
TSEs or more commonly prion diseases are a group of invariably fatal neurodegenerative diseases that occur in humans and animals . This disease is caused by a protease –resistant protein (PrPsc) after misfolding of a host-encoded prion protein (PrP). TSEs can exist as genetic, infectious or sporadic forms. The diseases are characterized by dementia, ataxia and neuropathlogically due to loss of specific neurons in the brain. Other clinical features include persistent painful stimuli, dystonia, visual or cerebellar problems and gliosis (1).
Bloodborne pathogens are viruses that deteriorate cells within the body. A virus is a submicroscopic parasitic organism that feeds on cells. Viruses are dependent on cells for their nutrients so the virus survive and reproduce. Every virus consists of either deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). A virus can contain a strand of one or the other, but not both. This RNA or DNA is contained within a protein shell for protection. A virus is a parasite that is dependent upon cells for metabolic and reproductive requirements. By using the cell the virus makes the host very ill by redirecting cellular activity to make more viruses.
The prion diseases that Chronic Wasting Disease is related to are Creutzfeldt-Jakobs disease found in humans, bovine spongiform encephalopathy (BSE) in cattle, and scrapies in sheep (3,4). These diseases are grouped together because they share certain characteristics such as long incubation periods, spongiform changes that are associated with neural loss, and cause failure to induce inflammatory responses (Chronic Wasting Disease Alliance).
... U.S. Department of Health and Human Services Public Health Service, National Institutes of Health, National Institute of
... of bacterial dna buy viruses. When they invade the bcacterial cell they make use of the bacterial protein machinery to produce virions. During process packaging where genetic material is packed into the newly formed virus, bits of bact dna are also included. The new virions carry bact dna into the next cell they infect
Creutzfeldt-Jakob Disease is an uncommon, deteriorating, consistently fatal brain disorder that is caused by prions. The symptoms of CJD are similar of Alzheimer’s but progress much faster. There are three variations of CJD, sporadic, familial, and acquired. All variations affect the brain the same way and have the same result of death. CJD is an untreatable and incurable disease.
...s - Fact Sheet." Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 22 Feb. 2011. Web. 08 Apr. 2014.
Journal of Public Health. Vol. 70, No. 4, Apr. 1980, pp. 348-351. EBSCOhost. 2017 October 25.
Centers for Disease Control and Prevention. Rep. N.p., 26 Sept. 2013. Web. 11 Apr. 2014.