2.Reliability of sulfur dioxide determination method documented in Chinese pharmacopoeia for evaluating Paeoniae Radix Alba.
Huan-Huan LIU ; Ming KONG ; Xiu-yang LI ; Song-Lin LI
China Journal of Chinese Materia Medica 2014;39(23):4615-4619
The content of SO2 in Paeoniae Radix Alba (RPA) was determined by the method documented in Chinese Pharmacopoeia (CP) 2010 edition to validate the repeatability of the method for evaluating RPA, and the contents of paeoniflorin sulfonate in both the residual material and distilled solution of RPA were determined by HPLC to study the transformation of paeoniflorin sulfonate to SO2 by HCl. It was found that the repeatability of the method in CP for evaluating RPA is unacceptable, and paeoniflorin sulfonate was detectable in both the residual material and distilled solution of RPA even at "the end point" of SO2 determination, merely about 50% of paeoniflorin sulfonate was transformed to SO2 by HCl, indicating that the current SO2 determination method in CP is not able to accurately quantify SO2 in RPA. It is recommended that more special method for determining SO2 content in RPA should be developed regarding the chemical characteristics of sulfur-fumigated RPA.
Chemistry Techniques, Analytical
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methods
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Chemistry, Pharmaceutical
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Drugs, Chinese Herbal
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analysis
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Fumigation
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Glucosides
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analysis
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Monoterpenes
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analysis
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Paeonia
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chemistry
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Pharmacopoeias as Topic
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standards
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Sulfur Dioxide
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chemistry
3.Improvement of dysphagia in patients with esophagus stenosis following carcinoma of esophagus
Ming LI ; Shao guang GAN ; Shizhou HUAN ; Rong fan CHEN ;
Chinese Journal of Tissue Engineering Research 2002;6(2):302-
Objective To investigate the intervention ways of endoscopes in the treatment of esophagus stenosis due to carcinoma of esophagus and improvement of quality. Method 11 cases of advanced carcinoma of esophagus were included in this study. Operation and chemical therapy were unavailable for these patients. Memory trestle with membrane and made of alloy of Nickel- titanium was inserted under intervention of endoscope. Trestle was posed in stenosis part of esophagus under direction of X- ray. Trestle could be dilated 3- 7 days after operation due to its reaction characteristics to temperature. So, redilated therapy was unnecessary. Trestle could reconstruct swallowing tract and made feeding through mouth become available during limited survival time.Results All trestles were successfully inserted.Half- fluid feeding was available after operation. Obstruction was removed in all patients(100% ).Conclusion Method described in this study was safe and effective .Effective swallowing tracts were reconstructed in all patients after trestle was planted and quality of life and survival time were both improved.
5.Research on refractive status characteristics and anterior chamber depth after cataract surgery
Xiao-Cheng, FENG ; Wu-Ming, PAN ; Li, GUO ; Jian-Rong, XIE ; Huan-Ying, LI
International Eye Science 2015;(7):1194-1196
AlM:To study the refractive status characteristics aftser cataract surgery and the correlation between preoperative anterior chamber depth ( ACD) and refractive status.METHODS: Ninety-six cases of patients with cataract were randomly divided into two groups. The patients in phacoemulsification group were treated with phacoemulsification combined intraocular lens ( lOL ) implantation while the patients in small incision group were treated by small incision extracapsular cataract extraction combined with lOL implantation. Changes in ACD and postoperative refractive status and refractive fully corrected value were counted and the correlation of them were analyzed .RESULTS: ACD of the phacoemulsification group s deepened 0. 74mm while that of the small incision group deepened 0. 78mm after treatment and there was no significant difference (P>0. 05). After operation, the ACD of two groups significantly deepened ( P<0. 05 ). The postoperative visual acuity of two groups were significantly better than the uncorrected visual acuity of two groups (P<0. 05). The postoperative refraction of two groups patients were mainly 0 ~ +1. 0D ( 41. 67% and 54. 16%) and+1. 25~+2. 0D (43. 75% and 33. 33%) (P>0. 05). CONCLUSlON: ACD is significant deepened after operation. Surgeon needs full consideration of changes to improve the refractive lOL calculation accuracy.
6.Forensic Analysis of 9 Cases with Enterovirus 71 Infection
Ming LI ; Jianyun YU ; Zhen LI ; Yongqiang QU ; Huan ZHANG ; Shuxue MA ; Shangwen WANG
Journal of Kunming Medical University 2013;(10):145-147
Objective To investigate the forensic characteristics of death cases of EV71 through retrospective analysis of 9 death forensic cases of Enterovirus 71 (EV71) . Methods Nine cases of EV71 death cases were collected,and the population characteristics, histopathological change,toxicology,pathology and causes of death of these cases were discussed. Results All 9 patients had fever, cough, emesis, and were treated as influenza or hand-foot and mouth disease (HFMD) in local hospitals, the condition was still deteriorating and finally died. The 9 autopsy cases were diagnosed as brain stem encephalitis and death in forensic diagnose. Conclusion The HFMD disease caused by EV71 infection progresses rapidly often leads to medical disputes, the patient's family and hospital's opinions on the causes of death in patients are often different,identifying the cause of death is conducive to resolve the disputes.
7.The expressions and their relationship of PTTG,P27 and CDK4 in glioma
Yu-Huan YUAN ; Ru-Fei DAI ; Jun CAI ; Xiao-Ming LI ; Chao YAN ;
Chinese Journal of Primary Medicine and Pharmacy 2005;0(11):-
Objective To investigate the role of expressions of pituitary tumor transforming gene(PTTG) and p27 in glioma,and explore the relationship between the expressions of them and cell cycle regulation.Methods Specimens of 40 patient with gliomas were divided into gradeⅠ:8 cases,gradeⅡ:10 cases,gradeⅢ:13 cases, gradeⅣ:9 cases,PTTGmRNA and p27mRNA were detected by reverse transcription polymerase chain reaction (RT-PCR),and their expressions of PTTG,P27,CDK4 protein were detected by immunostaining assay using strep- tavidin-peroxidase(SP) method.Results The expressions of PTTGmRNA in gradeⅠ~Ⅳwere (0.907?0.065),(1.109?0.083),(1.312?0.089),(1.499?0.215) respectively,there was significant difference among the groups(P
8.Progress on Post Traumatic Epilepsy and Its Forensic Evaluation
Yunge ZHANG ; Chunxiao LI ; Guofu GUAN ; Ming Lü ; Heying CHENG ; Huan CHEN
Journal of Forensic Medicine 2016;32(3):200-203
Post traumatic epilepsy(PTE)refers to the epileptic seizures after traumatic brain injury. Or-ganic damage can be found by imaging examination, and abnormal electroencephalogram can be detected via electroencephalogram examination which has the similar location of the brain injury. PTE has the characteristics of low incidence, absence of case reports, and easy to exaggerate the state of illness, which add difficulties to the forensic identification. This paper reviews the status of epidemiology, patho-genesis, clinical treatment and forensic identification for PTE.
9.Asiatic acid induces apoptosis in T98 G human glioblastoma cells by changing autophagy
Huan LI ; Fuqin GUAN ; Yu CHEN ; Min YIN ; Hao SUN ; Ming WANG ; Xu FENG ; Yu SHAN
Chinese Pharmacological Bulletin 2015;(10):1363-1367,1368
Aim To investigate the effect of asiatic acid on apoptosis and autophagy in human glioblastoma T98G cells. Methods MTT colorimetry was employed to assay the cellular proliferating activity. The fluores-cence microscope and Hoechst 33258 staining were used to detect the morphological changes. The cell ap-optosis and autophagy were analyzed by flow cytometry with Annexin-V/7-AAD and MDC staining respective-ly. The expressions of associated proteins were detected by Western blot to analyze the mechanism of apoptosis and autophagy. Results MTT assay showed that the growth of T 9 8 G cells was inhibited by asiatic acid ( IC50 =46. 3 μmol · L-1 ) . Annexin V/7-AAD stai-ning and Western blot revealed that asiatic acid in-duced apoptosis in T98 G cells by reducing the expres-sion of Akt, decreasing the mitochondrial membrane potential, and increasing the expression of Caspase-3. MDC staining and Western blot showed that the per-centage of MDC-positive cells was decreased and the expressions of Beclin-1 , LC3-II and Atgs were inhibi-ted by asiatic acid treatment. 5 μmol·L-1 chloroquine was used to up-regulate the expressions of LC3-Ⅱand Beclin-1 . Asiatic acid-inhibited autophagy was blocked and the total apoptotic rate was reduced remarkably. Conclusion Asiatic acid suppresses T98 G cells pro-liferation by inducing apoptosis and inhibiting cell au-tophagy, and the very role of inhibiting autophagy could promote apoptosis to a certain extent.
10.Expression and tyrosine phosphorylation of insulin receptor substrate-1 in adipose tissue from patients with gestational diabetes mellitns
Jianwen ZHU ; Ming HE ; Yan ZHOU ; Han XIE ; Juan WANG ; Huan WANG ; Li ZOU
Chinese Journal of Endocrinology and Metabolism 2008;24(4):397-399
Objective To investigate the expression and tyrosine phosphorylation of insulin receptor substrate-1 (IRS-1) and in the adipose tissue of patients with gestational diabetes mellitus (GDM), and to explore molecular mechanisms of insulin resistance in GDM. Methods The serum and adipose tissue were sampled from patients with GDM (GDM group, n = 20) and normal pregnant women (control group, n = 20). Fasting plasma glucose was measured by glucose oxidase assay. The expressions of IRS-1 protein and mRNA were determined by Western blot and semi-quantitative RT-PCR. The tyrosine phosphorylation of IRS-1 was measured by immunoprecipitation. Results Compared with control group, in GDM group, the expression of IRS-1 mRNA was markedly decreased (0.61 ±0.06 vs 1.12 ± 0.17, P < 0.01), the expression of IRS-1 protein was significantly decreased (0.57 ±0.08 vs O. 83 ±0.07, P <0.01) and tyrosine phosphorylation was significantly reduced (0.23 ± O. 06 vs O. 62 ±0.04, P < 0.01) in the adipose tissue. Conclusion The decline of protein expression and tyrosine phosphorylation of IRS-1 in the adipose tissue of gestational diabetes appears to be one of the moleculemechanisms of insulin resistance in patients with GDM.