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Objective To observe the clinical efficacy of modified Huanglian Qingxin Decoction for the treatment of recurrent oral ulcer. Methods Eighty recurrent oral ulcer patients were randomly divided into treatment group and control group by random number table method,40 cases in each group. The treatment group was given oral use of modified Huanglian Qingxin Decoction, and the control group was treated with Zinc Sulfate Tablets and Compound Vitamin B Tablets. Four weeks constituted one course of treatment. The scores of oral symptoms and signs of the two groups were observed before and after treatment,and the short-term effect and long-term effect of the two groups were evaluated after treatment. Results (1)After treatment for 5 days,ulcer area,ulcer pain, congestion area,exudation area,and sleep of the treatment group were much relieved (P < 0.01), and ulcer area,congestion area,and exudation area of the control group were improved (P < 0.05). The treatment group had better effect on improving ulcer area, ulcer pain, congestion area, exudation area, and sleep than the control group (P < 0.01). (2)After treatment for 5 days, the total short-term effective rate of the treatment group was 95.0%,and that of the control group was 72.5%,the difference being significant (P < 0.05).(3) Within one year after the suspension of treatment, total intermission period for ulcer attack in the two groups was prolonged (P < 0.05), and the amount of ulcer foci were much reduced (P < 0.05), the effect of the treatment group being superior to that of the control group(P < 0.05).(4)Within one year after the suspension of treatment,the total long-term effective rate of the treatment group was 70.0%,and that of the control group was 45.0%,the difference being significant (P<0.05). (5)During the treatment,the results of blood and urine routine examination,hepatic and renal function,and electrocardiography showed no abnormal changes. Conclusion Modified Huanglian Qingxin Decoction has better clinical efficacy for the treatment of recurrent oral ulcer than western medicine by relieving clinical symptoms and signs, prolonging the intermission period for ulcer attack, and reducing the total amount of ulcer foci.
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OBJECTIVE: To study the preparation and in vitro release profile of compound vitamin microencapsules using cross-linked gelatin as wall material. METHODS: At the presence of hydrogen peroxide, the cross-linked gelatin was prepared with ferulic acid as the cross-linking agent. During this reaction, horseradish peroxidase was used as the catalyst. Influences of reaction conditions on the cross-linking degree were investigated. Compound vitamin microcapsules were prepared by spray-drying technique using the obtained cross-linked gelatin as wall material. The core material was the mixture of thiamine hydrochloride (vitamin B1), riboflavin (vitamin B2), pyridoxine hydrochloride (vitamin B6), folic acid and nicotinamide. The effect of the ratio of wall material to core material on the encapsulation efficiency and loading of the vitamins were investigated. The size and surface morphology of the compound vitamin microcapsules were characterized. The encapsulation efficiency, loading and in vitro release property of the core material were determined by fluorospectrophotometry. RESULTS: A comparatively high cross-linking degree (ca. 10%) of cross-linked gelatin was obtained under the following reaction conditions:temperature of 40°C, pH value of 8.0, gelatin concentration of 9% (W/V), ferulic acid concentration of 40 mmol·L-1 and reaction time of 24 h. The vitamins were embedded by the cross-linked gelatin and the encapsulation efficiency was more than 85%. Scanning electron microscopy (SEM) study showed that the compound vitamin microcapsules had a regular spherical shape but the majority presented rough surfaces or dents. Particle size analysis indicated that the microcapsules had a mean diameter of 15.27 μm. At the ratio of coating material to core material was 10/1 (W/W), the vitamins encapsulated with the cross-linked gelatin released completely in 30 min in simulated gastric fluid, and they released completely in 16 min in simulated intestinal fluid. They released slower than the vitamins encapsulated with the gelatin accordingly. CONCLUSION: Compound vitamin microencapsules with high encapsulation efficiency and sustained release effect can be obtained by spray-drying using cross-linked gelatin as wall material.
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OBJECTIVE:To establish a HPLC method for determination of Vitamin B12 in compound vitamin capsules. METHODS:Compound vitamin capsules were determined by HPLC on a ODS column at room temperature.The mobile phase consisted of methyl alcohol and 0.05mol/L KH2PO4 buffer(22∶78,pH=6.4). The flow rate was 1.0ml/min,and the detection wave length was set at 360nm.The sample size was 20?l.RESULTS:The sample size of vitamin B12 presented a good linear relationship with peak area in the range of 10.20?g～204.00?g(r=0.9 999).The average recovery was 99.7%(RSD=1.18%).CONCLUSIONS:The present method is simple,convenient,and accurate for determination of vitamin B12 in compou_nd vitamin capsules,and it also has the advantage of preventing the interference from vitamin B6 and folic acid.