ABSTRACT
This study focuses on comparing the 2015 edition of WHO model list of essential medicines for children with the 2012 edition of list of national essential medicines for children in respects of drug categories,dosage forms,specifications and medica?tion information. The number of essential medicines available for children in China roughly equals to that of WHO model list of essen?tial medicines for children. Though China′s list provides more specific and children-agreeable specifications,it lags behind the WHO list with respect to the number of dosage forms and information concerning pediatric weight limitation ,drug combination and alterna?tives. It is recommended that research and development on dosage forms for children should be strengthened to solve the problem of pe?diatric drugs shortage. Also,more clinical trials should be developed as supporting evidence. Based on adapting to the needs of basic health services of children,essential medicines list for children in China should be established.
ABSTRACT
Objective:This paper intends to provide reference for consummation of biosimilar registration poli-cies in China. Methods:This paper evaluates the performance of Japanese registration regulation policies on biosimi-lars by analyzing the procedure and reviewing the features of biosimilars. Results and Conclusions:According to the findings of the present investigation, the availability and affordability of biosimilars have been improved, and the bio-medicine industry has achieved great development. On the other hand, it's recommended that the guideline for the de-velopment and evaluation of biosimilars should be amended on the principle of appropriate simplification, which means to simplify the research and development procedure and exempt partial application dossier. Besides, the regis-tration procedures should be adopted continuously to ensure the stability of biosimilars' R&D and registration.
ABSTRACT
<p><b>OBJECTIVE</b>To study the antioxidant activities of different extracts from Astragalus mongholicus.</p><p><b>METHOD</b>The antioxidant activities of the total flavanoids (TFA), the total saponins (TSA) and the total polysaccharides (TPA) from A. mongholicus were measured by means of biochemiluminescence. The concentrations of these samples varied from 1.25 x 10(-3) g x L(-1) to 25 x10(-3) g x L(-1).</p><p><b>RESULT</b>All the extracts showed antioxidant activities of scavenging 3 different free radicals with obvious concentration-scavenging capacity relationship. The antioxidant activity of TFA was the strongest among them. The IC50 of scavenging superoxide anion radicals of TFA (55.48% TFA, 0.59% TFA and 0.36% TFA) were 0.654 2, 4.654 4 and 6.055 2 g x L(-1), the IC50 of scavenging hydroxyl anion were 0.060 5, 0.254 4 and 0.493 0 g x L(-1), and the IC50 of scavenging hydrogen peroxide were 0.010 4, 0.156 0 and 0.224 0 g x L(-1), respectively.</p><p><b>CONCLUSION</b>The extracts are more sensitive to hydrogen peroxide and hydroxyl anion than to superoxide anion radicals. TFA of A. mongholicus Bunge is the main component responsible for antioxidant activity, while TSA and TPA have weaker antioxidant activity. The antioxidant activity of TFA increases with the rise of its purity. On the contrary, the antioxidant activity of TSA and TPA decreases with the rise of their purity.</p>