alexa Restoration of Innate Immune Responses may be a Novel Therapeutic Strategy for Treatment of Chronic Hepatitis C Virus Infection
ISSN: 0974-8369

Biology and Medicine
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Research Article

Restoration of Innate Immune Responses may be a Novel Therapeutic Strategy for Treatment of Chronic Hepatitis C Virus Infection

Yutaka Kishida1*, NaohikoImaizumi1, HirohisaTanimura1, YoshimichiHaruna2, Masahumi Naitoh3, Shinichiro Kashiwamura4 and Toru Kashiwagi5

1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Kaisei Hospital, Osaka City, Osaka, Japan

2Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Prefectural General Medical Center, Osaka City, Osaka, Japan

3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Koseinenkin Hospital, Osaka City, Osaka, Japan

4Laboratory of Host Defenses Institute for Advanced Medical Science, Hyogo College of Medicine, Nishinomiya City, Hyogo, Japan

5Deaprtment of Nuclear Medicine and PET-Center, Hyogo College of Medicine, Nishinomiya City, Hyogo, Japan

Corresponding Author:
Yutaka Kishida, Ph.D., M.D
Division of Gastroenterology and Hepatology
Department of Internal Medicine, Osaka Kaisei Hospital. 1-6-10 Miyahara
Yodogawa-Ku, Osaka City, Osaka, 532-0003 Japan
Tel: +81-6-6393-6234
Fax: +81-7-5955-3946
E-mail: [email protected]

Received Date: January 19, 2014; Accepted Date: February 08, 2014; Published Date: February 17, 2014

Citation: Kishida Y, Imaizumi N, Tanimura H, Haruna Y, Naitoh M, et al. (2014) Restoration of Innate Immune Responses may be a Novel Therapeutic Strategy for Treatment of Chronic Hepatitis C Virus Infection. Biol Med 6:196. doi: 10.4172/0974-8369.1000196

Copyright: © 2014 Kishida Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

HCV persistence results from inefficient innate and adaptive immune responses. We investigated whether an induction approach (IA) with natural (n) IFN-beta followed by Peg IFN-alpha and ribavirin (Standard of Care; SOC) (novel combination treatment; NCT) increased the virologic response and restored innate and adaptive immune responses in chronic hepatitis C (CHC) patients with HCV genotype 1b and a high viral load. Seven CHC patients were treated with NCT. NCT overcame viral escape and breakthrough, resulting in persistent viral clearance. Early virologic responders (EAVR, n=5) with undetectable HCVRNA before the end of IA showed a sustained virologic response (SVR). Late VR (LAVR, n=2) with undetectable HCVRNA after the end of IA showed a transient VR. IL-15 was increased at the end of IA in both EAVR and LAVR. CXCL-8, CXCL-10, CCL-4, and CCL-11 levels were significantly decreased (p<0.05) in EAVR, but were not in LAVR during NCT. IL-12 increased significantly (p<0.05) and CXCL-8 decreased significantly (p<0.05) after the end of NCT in EAVR, but did not in LAVR. The present study suggested that the initial early virologic clearance induced by CPIT before the use of SOC induced the restoration of DC function and improvements in the activation of NK cells, as indicated by the up-regulation of IL-12 and IL-15 and down-regulation of CXCL-8, CXCL-10, CCL-4, CCL-11. Early virologic clearance by IA with nIFN-beta induced the restoration of innate immune responses linked to adaptive immune responses, which resulted in SVR. NCT (n=8) achieved a higher SVR rate than that of SOC (n=8) in difficultto-treat CHC patients. The results showed the safety of the nIFN-beta treatment and supported the use of nIFN-beta as a safe and alternative option. NCT is more effective and have less adverse effects than SOC in difficult-to-treat CHC patients with genotype 1b and a high viral load

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