Pharmacokinetics and Pharmacodynamics of Interferon Alpha 2A

The Interferons (IFNs) are a group of cytokines produced by vertebrates in response to various stimuli, including the presence of foreign nucleic acids in the body, bacteria, tumor cells and viral antigens. These proteins have significant shares immunomodulatory, antiproliferative and antiviral drugs, the first line of defense of the body. Once produced, the IFNs block viral replication, maximize the lytic activity of natural killer cells, increase the expression of MHC class I in cells infected by viruses and induce the development of Th1 cells The production of interferon alpha-2A is now held by biotechnology with the establishment of a chain of DNA producer of interferon alpha-2a in the chain of original DNA of a bacterium, allowing the bacteria produce this drug on an industrial scale. In the process of synthesis, the 165 amino acids that are part of this molecule can change in your order with no reduction in activity or changes in the properties.

Due to this fact, the biological and medicinal considered, especially those in manufacturing by genetic engineering, need to prove their clinical activity so that they can be marketed. In the case of interferon, the consequences of the use of a product without activity compared to treat patients with Hepatitis C can lead to serious health complications from them. It is therefore necessary to prove its clinical activity and pharmacokinetics before its clinical efficacy. The sponsor of this study aims to end the renewal of registration of interferon alpha-2A with the Ministry of Health So this study to evaluate the Pharmacokinetics and Pharmacodynamics of interferon alpha-2a may allow in the future this medicine can be used by a year in patients with hepatitis C, without risk to their health, besides those already known and inherent in the treatment of any interferon.

Inclusion criteria

• Accepting the End of Free and Informed Consent;
• Research subjects were male, aged 18 to 55 years;
• Research subjects with body mass index ≥ 19 and ≤ 30;
• Be considered healthy, from the analysis of medical history, medical examination and laboratory tests within the normal range.

Exclusion criteria

• Results of laboratory tests outside the values considered acceptable in accordance with the criteria of medical evaluator;
• Having participated in any experimental study or have ingested any experimental drug in the last three months before the start of the study;
• Have made regular use of medication in the past 4 weeks preceding the start of the study or have made use of any medication a week before the start of the study;
• Have been hospitalized for any reason, up to 8 weeks before the start of the study;
• Present history of abuse of alcohol, drugs or medications, or have ingested alcohol within 48 hours prior to the period of stay;
• Have a history of liver disease, renal, pulmonary, gastrointestinal, hematological or psychiatric;
• Present pressure changes of any cause that requires pharmacological treatment; present history of myocardial infarction, angina and / or heart failure;
• Have donated or lost 450 ml of blood or more in the three months preceding the study