作者: Gerard V. Sunnen
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摘要: Hepatitis C (HCV) is a global disease with worldwide expanding incidence and prevalence base. Of massive public health importance, hepatitis presents supremely challenging problems in view of its adaptability pathogenic capacity. The unique strategies that HCV utilizes to parasitize hosts make it formidable enemy therapeutic interventions need considerable sophistication counter progress. Ozone, because special biological properties, has theoretical practical attributes potent inactivator. History the virus. A form became recognized 1970’s resembled serum B, lesser extent infectious A. It had, however, novel features, among them distinctive serological profile. In 1989, genome was deciphered. possible, by means extrapolation from genetic evolution virus approximate age. Sequence analysis points diversification different genotypes 200 400 years ago. Ancestors these probably date back 100,000 or so when viruses co-evolved modern humans. Further viral trees Old New World primates take primordial forms primate speciation periods some 35 million Today, context human population growth, migration, travel, widened territories, geographically demographically. There every indication this currently showing an accelerated phase. Virion architecture molecular biology. particle composed nucleocapsid containing genome, RNA single strand approximately 9600 nucleotides, protein coating. An envelope allows attachment penetration into host cells surrounds nucleocapsid. encodes structural proteins, designated as core (C), 1 (E1), 2 (E2), P7 (uncertain function), providing for virion architecture, nonstructural mainly enzymes essential virion’s life cycle, NS2, NS3, NS4A, NS4B, NS5A, NS5B. Proteases generate proteins. Helicases unwind nucleic acid. Polymerases replicate RNA. Within located hypervariable region implying area intensive fluidity mutational potential. displays great genotypic flexibility makes sophisticated evasiveness defenses. envelope, lipid bilayer associated glycoprotein union carbohydrates proteins Up 60% component phospholipid remainder mostly cholesterols. possesses projections called peplomers facilitate cells. One on thought be instrumental process CD-81.