RESUMEN
AIM@#To improve the absorption of thymopeptides (TH) by preparing sodium deoxycholate/phospholipid-mixed nanomicelles (SDC/PL-MMs).@*METHODS@#TH-SDC/PL-MMs were prepared by a film dispersion method, and then evaluated using photon correlation spectroscopy (PCS), zeta potential measurement, as well as their physical stability after storage for several days. Furthermore, in situ intestinal single-pass perfusion experiments and pharmacodynamics in immunodeficient mice were performed to make a comparison with TH powders and the control drug in absorption properties.@*RESULTS@#A narrow size distribution of nanomicelles, with a mean particle size of (149 ± 8.32) nm and a zeta potential of (-31.05 ± 2.52) mV, was obtained. The in situ intestine perfusion experiments demonstrated a significant advantage in absorption characteristics for TH compared to the other formulations, and oral administration of TH-SDC/PL-MMs potentiated an equivalent effect with i.h. TH in pharmacodynamic studies in immunodeficient mice.@*CONCLUSIONS@#TH-SDC/PL-MMs prepared by a film dispersion method are able to improve the absorption of TH. SDC/PL-MMs might be a good approach for the more effective delivery of drugs like TH.
Asunto(s)
Animales , Ratones , Ratas , Química Farmacéutica , Ácido Desoxicólico , Química , Portadores de Fármacos , Química , Estabilidad de Medicamentos , Micelas , Tamaño de la Partícula , Péptidos , Química , Farmacocinética , Fosfolípidos , Química , Ratas Wistar , Timo , QuímicaRESUMEN
Objective To explore the effects of adefovir velocimeter(ADV) combined with Thymopeptides α1 in treatment of patients with chronic hepatitis B (CHB) against hepatitis B virus (HBV). Methods 67 cases of CHB of positive HBeAg were divided into coupling group and single group. 34 cases of coupling group, after being treated for 26 weeks with thymopeptides α1 and ADV,continued to be treated 52 weeks with ADV. 33 cases of single group were treated for 52 weeks with ADV alone. Alanine aminotransferase periodically (ALT), total bilirubin, HBV DNA,HBeAg,anti-HBe were detected at regular intervals. Efficacy were evaluated after finishing the treatment. Results The liver function were both improved obviously in two groups (P ＞ 0. 05). Frequencen of seroconversio of HBeAg/anti-HBe and negative conversion ratio of HBV DNA were much higher in coupling group than that in single group(P ＜ 0. 05). Conclusions The effects were better with Thymopeptides α1 and ADV than that with single ADV. Coupling Thymopeptides α1 and ADV could help to resist and remove HBV.