2.Study of the inborn errors of mitochondrial fatty acid ?-oridation deficiency
Journal of Peking University(Health Sciences) 2004;0(02):-
Mitochondrial fatty acids ?-oxidation is a repetitive process of four steps which provides the major source of energy for heart, liver and skeletal muscle. Several enzymes are involved in this spiral cycle. The medium-chain acyl-CoA dehydrogenase ( MCAD) , the short-chain acyl-CoA dehydrogenase (SCAD) , the long-chain 3-hydroxy acyl-CoA dehydrogenase (LCHAD) and the carnitine-palmitoyl-CoA transferase Ⅱ ( CPT Ⅱ ) deficiency have been recognized as the most common inborn errors of metabolism and frequently reported in their association with sudden infant death ( SID) . The prevalent mutations in these genes need further investigation in different populations.
3.Multivariate analysis of risk factors with placental abruption in preeclampsia
Chinese Journal of Obstetrics and Gynecology 2010;45(11):825-828
Objective To investigate the risk factors with placental abruption in patients with preeclampsia.Methods Retrospective analysis on medical documents of 219 patients treated in Peking University Third Hospital from Jan.1994 to Dec.2008.Patients were divided into 3 groups, including 52 cases with severe preeclampsia terminated following placental abruption, 130 cases only with severe preeclampsia and 37 cases with unexplained placental abruption without preeclampsia.One hundred and multivariate regression analysis were used to identify the risk factors for placental abruption in patients with preeclampsia.Results (1) When compared with those in control group, univariate analysis showed that gravidity, parity, history of preeclampsia, second and third trimester pregnancy loss, history of autoimmune disease, chronic hypertension disease, lack of regular antenatal care, fetal growth restriction (FGR) and raises of umbilical artery Doppler resistance were risk factors associated with placental abruption.Logistic regression analysis showed that lack of a regular antenatal care ( OR = 45.348, 95% CI: 17.096 - 120.288,P = 0.000 ), FGR ( OR = 27.087, 95% CI: 5.585 - 131.363, P = 0.000 ) and second/third trimester pregnancy loss( OR = 16.068, 95% CI: 1.698 - 152.029, P = 0.015 ) were independent risk factors with placental abruption.(2) When compared with those in preeclampsia patients without placental abruption,the history of preeclampsia ( OR = 3.715,95% CI: 1.096 - 12.596, P = 0.035 ) and lack of a regular antenatal care( OR = 2.509,95% CI:1.173 -5.370,P =0.018) were risk factors for placental abruption in preeclampsia.Conclusion Lack of regular antenatal care, FGR, history of preeclampsia and second/third trimester pregnancy loss were risk factors associated with placental abruption in patients with preeclampsia.
4.Efficacy and safety observation after implantation of TICL in the treatment of high myopia with astigmatism
International Eye Science 2017;17(7):1317-1319
AIM:To study the efficacy and safety of Toric implantable contact lens (TICL) implantation in the treatment of patients with high myopia and astigmatism.METHODS: Totally 90 patients (178 eyes) diagnosed as this disease were selected in our hospital during September 2012 to September 2016 by the method of random.The UCVA, BCVA, refraction, astigmatism coefficient, corneal endothelial cell, intraocular pressure, manifest refraction examination were accessed and compared before and after 3 and 9mo of surgery.RESULTS: After 3 and 9mo of the surgery, the UCVA and BCVA were much higher than those before treatment, which the difference was statistically significant (P<0.05).We compared the refraction at 3mo (-0.52±0.23D) and 9mo (-0.54±0.16D), the astigmatism coefficient at 3mo (-0.39±0.23D) and 9mo (-0.33±0.56D) after treatment, and we found that the differences were not statistically significant (P>0.05).The corneal endothelial cells at 3 and 9mo after operation were compared with those of before treatment, and we found that the differences were statistically significant (P<0.05).The intraocular pressure of 3 and 9mo after operation was compared with that before operation, and we found that the differences were not statistically significant (P>0.05).CONCLUSION: TICL implantation in the treatment of patients with high myopia and myopic astigmatism has a more obvious clinical efficacy and safety and reliability.
8.Relationships between Low Birth Weight and Insulin Resistance and Adult Cardiovascular Disease
zi-yan, ZHAO ; ping-yang, CHEN
Journal of Applied Clinical Pediatrics 2004;0(08):-
The nutritional status in early life have been gradually recognized that it can change the status of development and metabolism of adults.Epidemiological evidence and animal model study have found that low birth weight is the risk factors of adult metabolic syndrome and cardiovascular disease.Insulin resistance is a common pathophysiological basis.Renin-angiotensin system and insulin signaling systems interact to promote the development of insulin resistance.
9. Comparative study on HPLC characteristic chromatogram of water extracts of Arisaematis Rhizoma and its processed products
Chinese Traditional and Herbal Drugs 2020;51(3):639-646
Objective: To establish and analyze the HPLC characteristic chromatogram for water extracts of Arisaematis Rhizoma (AR) and its processed products, Arisaematis Rhizoma Preparatum (ARP) and Arisaema Cum Bile (ACB). The research provided reliable method and scientific basis for their quality control. Methods: The separation was performed on an Agilent C18 (200 mm × 4.6 mm, 5 μm) column with gradient elution of 0.2% acetic acid water and 0.2% acetic acid acetonitrile. The similarity was analyzed with software “Similarity Evaluation System for Chromatographic Fingerprint of TCMs (Version 2012)”. The cluster analysis was performed by SPSS 23.0. The principal component analysis was performed by SIMCA 14.1. Results: HPLC characteristic chromatogram for water extracts of AR, ARP, and ACB were established. There were 19, 20 and 13 common peaks in AR, ARP and ACB, respectively. A total of eight characteristic peaks were identified as F1 (xanthine), F3 (uracil), F4 (hypoxanthine), F5 (uridine), F6 (guanosine), F7 (adenosine), F14 (schaftoside), and F16 (isoschaftoside), respectively. The intragroup similarities of AR, ARP, and ACB were all above 0.8 and each was clustered into one type, and the intergroup similarities among AR and its processed products were all below 0.4. The main components of AR were F16 (isoschaftoside), F14 (schaftoside), F17and F15. The main components of ARP were F16 (isoschaftoside) and F1 (xanthine). The main components of ACB were F3 (uracil), F2, F5 (uridine) and F1 (xanthine). Conclusion: The method can effectively identify AR, ARP and ACB, and provide a scientific basis for their quality control.
10. HPLC simultaneously determines multiple hydrophilic and lipophilic bioactive components in Radix et Rhizoma Salviae Miltiorrhizae
Academic Journal of Second Military Medical University 2010;30(2):190-193
Objective: To develop a new method for the simultaneous determination of two hydrophilic components and two lipophilic components of Radix et Rhizoma Salviae Miltiorrhizae. Methods: The HPLC-DAD method was employed using a column of Agilent Zorbax TC C18 (4.6 mm × 250 mm, 5 μm) with a mobile phase of methanol -2% acetic acid. The gradient elution program was as follow:0-15 min, 30% B-40% B; 15-20 min, 40% B-60% B; 20-25 min, 60% B-90% B; 25-40 min, 90% B. The detection wavelength was set at 281 nm and the temperature was 35°C. Results: The linearity was obtained over 3.76-120.20 μg · ml-1 (r=0.999 9) for rosmarinic acid, 34.20-109 4.5 μg · ml-1 (r=0.999 9) for salviamolic acid B, 0.64-20.32 μg · ml-1 (r=0.999 9) for clyptotanshinon, and 1.02-32.72 μg · ml-1 (r=0.999 6) for tanshinone II A. The RSDs of precision and stability of the sample were both less than 1% in 48 hours. The average recovery was between 99.72%-100.63%. Conclusion: The present method is simple and has satisfactory efficacy; it can simultaneously determine multiple hydrophilic and lipophilic bioactive components in Salvia miltiorrhiza from different areas.