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BACKGROUND:Subdermal contraceptive implants as a novel contraceptive method have been extensively used worldwide.OBJECTIVE:To review the research progress in the non-biodegradable and biodegradable long-term subdermal contraceptive implants and to explore their advantages and disadvantages.METHODS:A computer-based search of CNKI,Wanfang,and PubMed (1967-2015) was performed by the first author for relevant articles,using the key words of contraceptive implants,non-biodegradable,biodegradable in Chinese and English,respectively.Initially 240 articles were retrieved,and finally 70 articles were included in result analysis.RESULTS AND CONCLUSION:Long-term subdermal contraceptive implants that pass through the local capillaries into the blood circulation system can avoid the gastrointestinal absorption,improve the bioavailability of drugs,and reduce adverse drug reactions.According to the performance,there are two kinds of drug carriers,non-biodegradable and biodegradable.Although non-biodegradable implants have been widely used and the contraceptive effect is excellent,the implants must be removed surgically because they cannot be absorbed or metabolized in the body.Significant efforts have been devoted to developing biodegradable implants because they can degrade at the end of use.However,the utility of some biodegradable polymers as drug carriers in implantable applications has been hampered by their shortcomings,and further study on alternative materials is urgently required.
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This article made a historic review on the treatment and diagnosis process of biliary atresia at home and abroad, and analyzed the problems of diagnosis and treatment on biliary atresia. The author points out that there is no registered system in domestic, which results in screening job has been unable to conduct substantive work for many years. The author also puts forward his own views about the postoperative influence factors including the time of Kasai operation, postoperative cholangitis, biliary cirrhosis and other issues, and suggests that improving the prognosis of children with biliary atresia needs the cooperation among national colleagues to work together.
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ObjectiveTo investigate the diagnosis and operative procedure for spontaneous perforation of congenital choledochal cyst in children. MethodsThe clinical data of 16 cases with spontaneous perforation of congenital choledochal cyst were analysed retrospectively.ResultsAll cases were under 4 years old with a mean age of 23 months. Abdominal distension, pain, vomiting, fever and diffuse tenderness were present in all patients. The preoperative diagnosis was established by paracentesis in ten patients. Abdominal sonography and CT found a cyst in 5 of the 10 cases reviewed. In 11 cases (68.7%), the site of perforation was found on the confluence of common bile duct and gallbladder cystic duct. T-tube drainage was used as a transition measure. All patients recovered uneventfully. Radical resection was performed in about three months after the initial operation. ConclusionsThe obstruction of the bile duct and poor blood supply to the choledochal cyst are major causes leading to perforation. Routine abdominal paracentesis should be carried out for a small child with peritonitis and general abdominal tenderness, especially on the right upper quadrant.T-tube drainage should be adopted as an emergent procedure to tide the patient over the crisis followed by elective choledochal cyst resection and bile duct reconstruction.
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Objective:To establish a HPLC for determination of Gracillin in Rhizoma Paridis and Yunnan white on the bases of determining anti tumor cytotoxic bioactivities of more than 20 varieties of chinese medical materials and traditional Chinese patent medicines.Methods: The determination was carried out by HPLC on KR 100-5C18 column, with acetoitrile water (43∶5) as a mobile phase. The detection wavelength was 210nm. and the flow rate was 0.8ml/min.Results: The recoveries are 99.8% (RSD in 2.6%, n=6) and 98.8% (RSD is 1.5%, n=6), respechrely. The within day and between day accuracies are 1.4% of RSD(n=6) and 1.8% of RSD (n=4), respectively.Conclusion: The results showed that water, methanol and alcohol extracts of Rhizoma Paridis and Yunnan white had strong inhibition on 6 kinds of neoplasm cells of human body and their component Grarillin also had the inhibition on tumor cells.
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Objective To investigate the protective effect of the extractions of synthetic Cordyceps Sinensia Sacc powder on cold preserved injured tissues of rat livers. Methods The extractions of synthetic Cordyceps Sinensia Sacc powder were added into LR at certain proportion. Having been preserved for 6 or 12 hours, the liver grafts of rats were reperfused for 30 minutes. And then, ATP, ADP, AMP in livers were measured and added up to total adenine nucleotide (TAN). Besides, AST, ALT, MDA, and ET in the effluent of the reperfusion were assayed. Pathological sections were studied and apoptosis index was detected by TUNEL method. Results The values of ATP, TAN in the experimental group preserved for 12 hours were significantly higher than the control group (P0.05), but the mean of the former was higher than the latter. There was obvious increase of apoptosis index (P