Browsing by Subject "antiviral activity"

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    Long-term outcomes of thymosin-α1 and interferon α-2b combination therapy in patients with hepatitis B e antigen (HBeAg) negative chronic hepatitis B
    (John Wiley and Sons Inc., 2003) Saruc M.; Ozden N.; Turkel N.; Ayhan S.; Hock L.M.; Tuzcuoglu I.; Yuceyar H.
    Hepatitis B e antibody (HbeAb) and hepatitis B virus (HBV) DNA positive chronic hepatitis is a clinical entity, distinct from classical hepatitis B e antigen (HbeAg) positive chronic hepatitis B. Our aim was to evaluate the long-term therapeutic efficacy of the combination of interferon α-2b and thymosin-α1 compared with lamivudine plus interferon α-2b and interferon α-2b alone. Fifty-two patients with HbeAg-negative chronic hepatitis B were assigned to three different groups in a nonrandomized manner. Group 1 (n = 27) received thymosin-α1 [1.6 mg subcutaneously (sc), twice a week] and interferon α-2b (10 MIU sc, three times per week) for 26 weeks, subsequently followed by interferon α-2b monotherapy at the same dosage for an additional 26 weeks. Group 2 (n = 10) received interferon α-2b (10 MIU sc, three times per week) for 52 weeks. Group 3 (n = 15) received interferon α-2b (10 MIU sc, three times per week) and lamivudine [100 mg orally (po), q.d.] for 52 weeks, followed by continuous lamivudine (100 mg po, q.d.) therapy. By the end of 78 weeks, a sustained response (SR-6 mo) was seen in 74% (20/27) of the patients within Group 1. On the contrary, Groups 2 and 3 had sustained response rates of 40 (4/10) and 53.3% (8/15), respectively (p = 0.13). At the end of 12 months post-treatment in Group 1, a virological and biochemical response rate was seen in 70.3% of patients (19/27); in contrast, Groups 2 and 3 had response rates of 20 (2/10) and 26.6% (4/15), respectively (p = 0036). At the end of the 18-month post-treatment follow-up period, 71.4% (19/27) of patients in Group 1, 10% of patients in Group 2 (1/10), and 20% of patients in Group 3(3/15) preserved their sustained response (p = 0.0003). Interferon α-2b and thymosin-α1 combination therapy results in significant virological and biochemical response rates compared with standard therapeutic regimens and is well tolerated. © 2003 Wiley-Liss, Inc. and the American Pharmacists Association.
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    Toll-like receptors and skin
    (2011) Ermertcan A.T.; Öztürk F.; Gündüz K.
    Toll-like receptors are important pattern recognition receptors which have key roles in both innate and adaptive immune responses. They are strongly associated with the pathogenesis of inflammatory and autoimmune diseases. Furthermore, Toll-like receptors have also been implicated in the pathogenesis of several skin diseases such as skin infections, psoriasis, acne vulgaris, lichen planus, Behçet's disease, leprosy, syphilis, Lyme disease, atopic dermatitis and allergic contact dermatitis, mycosis fungoides, non-melanoma skin cancers and melanoma. In this manuscript, the structure and functions of Toll-like receptors in immune responses, their impact on skin diseases and recent advances on therapeutic usage have been reviewed. © 2011 European Academy of Dermatology and Venereology.
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    Assessment of in-vitro cytotoxicity and in-ovo virucidal antiviral efficacy of various plant extracts and bioactive molecules
    (Veteriner Fakultesi Dergisi, 2024) Çöven F.O.; Gür S.; Uyar E.; Alsakini K.A.M.H.; Karabey F.; Çöven F.; Çaliş İ.; Nalbantsoy A.
    The viral diseases that occurred in recent years have increased the interest in non-toxic to healthy cells and naturally isolated agents to struggle with these diseases. The key intention of this research is to examine both antiviral potentials against the Infectious Bronchitis model virus (IBV) and cytotoxic activities on determined cell lines of different active ingredients and medical herbs extracts for developing new antiviral agents or drugs towards SARS-CoV-2. The antiviral potency of the samples against IBV was determined as in ovo virucidal antiviral activity in specific pathogen-free (SPF) embryonated chicken eggs (ECEs). To detect antiviral activity, the haemagglutination test was performed after 48 h of incubation for all samples. The cytotoxic activity of the samples was identified on HepG2, Caco-2, HeLa, HEK293, PANC-1, PC-3, A549, MDA-MB-231, and CCD-34Lu cell lines by the MTT protocol. Hypericum perforatum extract was found to have a dominant role in cytotoxicity and antiviral activity. In addition, while nobiletin and Sambucus nigra do not exhibit cytotoxic activity on cells, they play a significant role in antiviral activity. As a consequence of our investigation, the cytotoxic and antiviral properties of Laurus nobilis, H. perforatum, and S. nigra extracts were found remarkable and the potential of these extracts was demonstrated. © 2024, Veteriner Fakultesi Dergisi. All rights reserved.