RÉSUMÉ
OBJECTIVE:To establish a method for the dissolution determination of Pentoxyverine citrate and guaifenesin tab-lets,and to compare the difference of preparations from different manufactures. METHODS:The paddle method was used to deter-mine the dissolution,using water as medium with medium volume of 1000 mL and rotation speed of 75 r/min,sampling at 45 min. HPLC method was used to determine the accumulative dissolution of pentoxyverine citrate and guaifenesin:CAPCELL PAK C18 MGⅡ S-5 column;mobile phase of acetonitrile-triethylamine phosphoric buffer solution(pH 2.6±0.05)(33:67,V/V),flow rate of 1.0 mL/min,detection wavelength of 215 nm(pentoxyverine citrate)and 275 nm(guaifenesin),column temperature of 35 ℃,sample size of 20 μL. RESULTS:The linear range of pentoxyverine citrate and guaifenesin were 5.0916-50.9155 μg/mL(r=0.9999)and 29.9995-299.9952 μg/mL(r=0.9999),respectively. RSDs of precision,stability and reproducibility tests were all lower than 2.0%. Average recoveries were 97.90%-100.68%(RSD=0.95%,n=9)and 97.09%-101.85%(RSD=1.32%,n=9). Average accu-mulative dissolution of pentoxyverine citrate in 6 manufactures of samples were 12%,98%,66%,97%,91%,32%(n=3);those of guaifenesin were 8%,95%,68%,90%,93%,18%(n=3),respectively. CONCLUSIONS:The method is simple,ac-curate,sensitive,specific and suitable for the dissolution determination of Pentoxyverine citrate and guaifenesin tablets. The dissolu-tion of samples between different manufactures and the same manufactures different batches are quite different.
RÉSUMÉ
Objective To investigate the effect of aminophylline and pentoxyverine on serum CRP, monocyte chemotaxis protein 1(MCP-1) and serum immune factors in elderly patients with sleep apnea syndrome .Methods 112 elderly patients with apnea syndrome were divided into the control group and the experiment group by order of medical treatment and 56 cases in each group.The control group were treated by rosiglitazone hydrochloride tablets and bay three ramie snore capsule and the experiment group were treated on the control group with Aminophylline Tablets and Pentoxyverine Citrate Tablets.Follow up 3 months, the CRP, MCP-1,IFN-γ,IL-4,IL-8 and IL-10 were tested and compared.Results Compared with the control group after treatment, the CRP,MCP-1,IFN-γand IL-8 level were lower(P <0.05),the IL-4 and IL-10 level were higher(P <0.05).Conclusion Aminophylline and pentoxyverine can be effective in treatment of elderly patients with apnea syndrome and its complications , suggesting that the mechanism may be related to reduce the patients serum CRP, MCP-1, IL-8 and IFNγ-levels, is related to the increasing of the levels of IL-4, IL-10.