1.The Method for Determination of Chlorogenic Acid in Eucommia ulmodies Oliv by HPLC
Shengjin LIU ; Liuqing DI ; Dekang WU
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(01):-
Objective The methods for determination of Chlorogenic Acid(CA) in Eucommia ulmodies Oliv were established and determinated the content of CA. Extract solvent, method, time and times were studied and HPLC method for determination was used. Methods The HPLC system consisted of the column of Lichrospher C18 (4.6 mm?250 mm, 5 ?m) and acetonitrtle-water-phosphoric acid (13∶86.5∶ 0.5) as the mobile phase. The temperature was 25℃. The detective wavelength was 327nm. The flow rate was 0.8 mL/min. External standard method was used. Results The powder of eucommia was extracted twice with 60%methanol-water solution at 100 ℃, the first time for 1.5 h,the second for 0.5 h was the optimum one. The method was linear within the range of 2.22?10-2~55.40?10-2 ?g, the average recovery was 99.55%, and the RSD was 1.98% (n =6). Conclusion The method is simple, sensitive and highly reproductive, and it is suitable for ananlysis of CA in Eucommia ulmodies Oliv.
2.Study on the Quality of Eucommia Ulmodies Processing in Planting by Different Methods
Shengjin LIU ; Dekang WU ; Liuqing DI
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(12):-
Objective To study on the quality of Eucommia ulmodies processing in planting by different methods.Methods The quantity percent of coarsed cortex,water and ethanol extract were compred,the contents of Pinoresinol diglucoside(PDG)were determined by HPLC,the residues of pesticides and the content of heavy metal element were carried out to investigate the quality.Results The quantity percent of coarsed cortex was 12.7%(n=3).Ethanol extract had no remarkable difference whether scrape the coarsed cortex or not.Water extract was higher 11.26%(P
3.Effects of sleep deprivation at different time during night on serum cortisol and emotion of healthy men
Huijuan WU ; Zhongxin ZHAO ; Liuqing HUANG
Medical Journal of Chinese People's Liberation Army 2001;0(12):-
Objective To investigate the effects of short-term sleep deprivation(SD)at different time during night on serum cortisol level and emotion state of healthy men,and to find out the influence of work shift onto human circadian rhythm.Methods Two periods of sleep-time were deprived in the present study:the late-night SD(permitted to sleep from 0:00 to 3:00 each day)and the early-night SD(permitted to sleep from 3:00 to 6:00 each day).Ten healthy male adults were chosen to undergo the late-night SD first,followed by normal sleeping for eight nights for washout,and then underwent early-night SD.Each SD period lasted 6 days,i.e.1 day before SD,4 days of SD and 1 day after SD for recovery.Fasting blood samples,for detection of serum cortisol,were collected at 7:00 am every SD day,and the state anxiety inventory(S-AI)scoring was done at the same time.Results The cortisol levels were lowered after 2 types of SD(P0.05).Dependability analysis showed that the cortisol level during the late-night SD period was negatively related to the SD days(r=-0.954 7,P0.05).Both types of SD could elevate anxiety scores,which positively correlated with the SD days(late-night SD:r=0.990,P
4.Identification of DSRAD Gene Mutation in a Chinese Dyschromatosis Symmetrica Hereditaria Family
Yiqun JIANG ; Liuqing CHEN ; Liming WU ; Xiulian XU ; Jianfang SUN
Chinese Journal of Dermatology 1995;0(04):-
Objective To identify the gene locus and the mutation of DSRAD (double-stranded RNA adenosine deaminase) in a Chinese dyschromatosis symmetrica hereditaria(DSH) family. Methods After confirming the diagnosis of the DSH proband, the genomic DNA was extracted from the whole blood samples of every members of the pedigree. The DSRAD gene intervals were localized by linkage analysis and haplotype reconstruction. The mutation of DSRAD was detected by direct sequencing. Results The candidate gene was localized at the 1q region, consistent with the reported region. The direct sequencing results showed that there was a CAA→TAA transition at exon 2 of DSRAD in all affected family members, which consequently led to a nonsense mutation of Gln517Ter. Conclusion A nonsense mutation is found in the Chinese DSH family.
5.Study on the community succession of sarcosaphagous insects at summer in Xinxiang area
Hongyan WU ; Liuqing YANG ; Bo WANG ; Haoyue YUAN ; Yingjie ZHAI
Chinese Journal of Forensic Medicine 2017;32(1):13-15
Objective To study and the succession of sarcosaphagous insects and their regular activity on carcass in Xinxiang area. Methods Six rats and five rabbits were sacrificed and placed at the remote grassland of Xinxiang Medical University in July 2015. The main insect species and the decomposition process were observed. The different decomposition stages and the community succession of insects were recorded. Results Seven main species could be identified belonging to 3 families from Diptera, main including Musca domestica, Chrysomya megacephala, Lucilia sericata, Boettcherisca peregrina, Helicophagella melanura. Muscina stabulans and Fannia prisca. And showed regulations of the succession of sarcosaphagous flies community. Conclusion It may be used for estimating postmortem interval in Xinxiang area.
6.p38 mitogen-activated Protein Kinase in Vascular Smooth Muscle Cells Proliferation in SHR
Liuqing XU ; Qiong YE ; Changsheng XU ; Huajun WANG ; Kegui WU
Chinese Journal of Hypertension 2006;0(09):-
Objective To investigate the role of p38 mitogen-activated protein kinase(p38MAPK) pathway in the proliferation of SHR vascular smooth muscle cells(VSMC) induced by angiotensin Ⅱ(Ang Ⅱ) and platelet-derived growth factor-BB(PDGF-BB).Methods VSMC were obtained from SHR thoracic aorta.DNA synthesis was quantified by measuring [3H]-thymidine incorporation.The p38MAPK activity was evaluated by immunobloting technique with phospho-p38MAPK antibody.Results 1) Ang Ⅱ(10-8-10-6 mol/L),PDGF(3-30 ng/L) dose-dependently increased the proliferation activity of VSMC([3H]-TdR incorporation).Ang Ⅱ(10-7 mol/L) or PDGF(10 ng/L) significantly increased [3H]-TdR incorporation rate in VSMCs(Ang Ⅱ:11 588?1322 vs control 2546?207 counts/min,P
7.Analysis of metabolites of daphnetin in the intestinal wall of rats by liquid chromatography and quatrupole-time of flight mass spectrometry.
Jinjun SHAN ; Haishan DENG ; Hongmei WEN ; Hao WU ; Shouchuan WANG ; Liuqing DI
Acta Pharmaceutica Sinica 2011;46(11):1366-9
In this study, daphnetin and its major metabolites in the intestinal wall of rats were identified by liquid chromatography and quatrupole-time of flight mass spectrometry. Perfusion fluid of duodenum, jejunum, ileum and colon were collected separately for 2 hours from the rat intestine following perfusion with daphnetin. The metabolites of daphnetin in the perfusion fluid of different intestine segments were analyzed by the liquid chromatography and quatrupole-time of flight mass spectrometry. It is shown that the parent drug daphnetin and four metabolites were found in the perfusion fluid of duodenum, jejunum and ileum. However, no metabolites were found in the colon. Among the four metabolites, two daphnetin sulfates (m/z 257) were first discovered as the phase II metabolites of daphnetin in rats, which revealed a new way of daphnetin metabolism in rats.
8.Risk factors of hepatocellular carcinoma in patients with HBV-related liver cirrhosis receiving nucleos (t) ide analogues treatment
Liuqing YANG ; Guoli LIN ; Yuankai WU ; Xiangyong LI ; Tingting XIONG ; Zhiliang GAO ; Yutian CHONG
Chinese Journal of Clinical Infectious Diseases 2012;05(1):28-32
Objective To survey the incidence of hepatocellular carcinoma (HCC) in patients with HBV-related cirrhosis receiving nucleos(t)ide analogues treatment and to assess its risk factors.Methods A total of 141 patients with HBV-related liver cirrhosis receiving nucleos(t) ide therapy from April 2008 to June 2011 were enrolled.The clinical data including virological and biochemical tests were retrospectively analyzed.Univariate and multivariate Cox proportional hazards regression model was used to identify the risk factors of HCC occurrence.Results Patients were followed up for 6.4 to 87.6 months with a median followup time of 32.5 months.During the follow-up period,15 out of 141 patients developed HCC with an average annual incidence rate of 3.8%.HCC incidence was higher in HBeAg positive cirrhosis and in those with family history of liver cancer ( RR =4.524 and 3.858,P < 0.05 ).Conclusions Patients with HBV-related cirrhosis have a high incidence rate of HCC even they recieve nucleos (t) ide analogues treatment.HBeAg positive cirrhosis and family history of liver cancer are independent risk factors for HCC.
9.Efficacy and impact of premedication with eszopiclone on sleep structure of patients with acute insomnia
Zhenyun YIN ; Huijuan WU ; Lin ZHANG ; Hua PENG ; Liuqing HUANG ; Wenzhao WANG ; Zhongxi ZHAO
Chinese Journal of Neurology 2011;44(12):853-856
Objective To evaluate the efficacy of eszopiclone for patients with acute insomnia and the impact of premedication with eszopiclone on sleep structure of patients with acute insomnia.Methods In an open-label,self-control trial was conducted at Changzheng Hospital Sleep Centers,and patients (n =32) with acute insomnia (12 men,20 women; mean age,36.2 years) were administered eszopiclone 3 mg for three consecutive nights.Sleep was monitored via polysomnography.The insomnia severity index (ISI),and mini-mental state examination (MMSE) were used to assess the degree of insomnia and impact of drugs on cognitive function during the day.Results Eszopiclone can shorten sleep latency ( before treatment:(52.92 ± 11.71 ) min,after treatment:(28.2 ± 10.11 ) min; t =-4.376,P <0.01 ),prolong total sleep time(before treatment:(365.22 ±30.13) min,after treatment:(429.18 ±26.93 ) min; t =4.102,P < 0.01 ),decrease wake up times( before treatment:( 5.00 ± 1.92 ) times,after treatment:( 2.73 ± 0.91 )times; t =- 4.592,P < 0.01 ),improve sleep efficiency ( before treatment:72.69% ± 6.32%,after treatment:82.67% ± 4.16% ; t =3.371,P < 0.01 ),reduce awake time ( before treatment:( 88.51 ±17.48) min,after treatment:(65.93 ±21.l0)min; t =-4.592,P <0.01 ),decrease light sleep ( NREM1 period) the percentage of time ( before treatment:12.54% ± 2.10%,after treatment:7.30% ± 2.90% ;t=-3.155,P < 0.01 ),and increase the percentage of slow wave sleep (before treatment:8.03% ±5.37%,after treatment:9.31% ±5.29%; t =4.228,P <0.01).No effect was observed on the percentage of NERM2 period (t =0.731,P >0.05) and REM period (t =-0.813,P >0.05).Eszopiclone can improve the quality of subjective assessment of sleep ( ISI score decreased,t =- 2.551,P < 0.05) and has no significant effect on cognitive function on first the morning after patients taking the medication.Conclusion Eszopiclone can positively regulate the sleep structure in patients with acute insomnia and improve subjective assessment of sleep quality.It is safe and has no significant effect on cognitive function.
10.Effects of Supplementing Qi and Activating Blood Circulation Method on Left Ventricular Contractile Function of Senile Diabetics
Xianpei HENG ; Liuqing YANG ; Hong YANG ; Lifeng WU ; Ling WENG ; Guoying ZHOU ; Xia CHEN ;
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(02):-
type of extreme heat with yin asthenia.But discrepancy of CO and EF between type of deficiency of both QI and YIN and type of QI-stagnation and blood stasis all had not statistical significance.Conclusion: In clinic to aim directly at left ventricular contractile dysfunction of senile diabetics,no matter syndrome differentiation belonging to type of deficiency of both QI and YIN,type of QI-stagnation and blood stasis or type of deficiency of both yin and yang,all can benefit after treatment with supplementing QI and activating blood circulation method;but syndrome differentiation belonging to type of extreme heat with yin asthenia advocates not to use supplementing QI and activating blood circulation method.