1.Analysis of projects in drug metabolism and pharmacokinetics funded by NSFC during "10th Five Year Plan" in China
Xinyi YANG ; Xuefu YOU ; Lei WU
Chinese Pharmacological Bulletin 1986;0(04):-
In this article, the projects in drug metabolism and pharmacokinetics funded by NSFC during "10th Five Year Plan" (2001~2005) in China were reviewed. The major research fields of these projects in drug metabolism and pharmacokinetics funded by NSFC during the financial years were overviewed and analyzed. Finally, current problems in these research fields in China were also briefly analyzed.
2.Value of low dose dobutamine stress echocardiography in detecting survival myocardium
Chunsong KANG ; Xinyi YANG ; Jian WANG
Chinese Journal of Ultrasonography 2003;0(10):-
(0.05)) during dobutamine 5 ?g?kg~(-1)?min~(-1) stage. Blood pressure had significant increase both in dobutamine 10 ?g?kg~(-1)?min~(-1) stage and post-coronary revascularization. The sensitivity,specificity,accuracy of dobutamine 5 and 10 ?g?kg~(-1)?min~(-1) were (73.0)% and (89.6)%, (81.7)% and (82.8)%,(76.9)% and (86.5)%, respectively. Conclusions LDDSE is a simple,safe and no injury means to identify survival myocardium in myocardial infarction.
3.Basilar artery tortuosity is related to age and cerebral basilar atery infarctions
Zhangning ZHAO ; Xinyi WANG ; Meijia ZHU ; Zhiqiang YANG
Chinese Journal of Neurology 2010;43(7):505-508
Objective To study the tortuosity coefficient (TC) values of basilar arteries in the adult,and its change in cerebral basilar artery infarction.Methods TC values of basilar arteries was prospectively analyzed using the magnetic resonance angiography images of 135 controls(19-80 years of age,male 90,female 45)and 42 patients with cerebral infarction(5l-70 years of age,male 28,female 14).The relationship between TC values and posterior circulation infarction was statistically evaluated.Results Differences of TC between age groups were statistically significant except group B (31-50 years)and C(51-70 years)(F=10.31,P<0.01).The infarction group had greater TC value(2.497±1.200)than the control group(1.939±0.850,t=2.39,P=0.0195).Conclusions (1)Basilar artery tortuosity is positively related to age,reflecting the degree of arteriosclerosis;(2)Basilar artery tortuosity increases in patients with posterior circulation infarction.
4.Research on quality of life and influencing factors for the empty-nester elderly in rural area in Hunan
Wenting ZHA ; Xuewen YANG ; Xinyi ZHANG ; Weijun LIANG
Chinese Journal of Geriatrics 2014;33(9):1021-1024
Objective To study the life quality and influencing factors for empty nester elderly in rural area in Hunan,and to provide the scientific basis for the effective interventions.Methods The two villages of Yiyang and Huaihua were randomly selected by cluster sampling from June 2011 to December 2011 in Hunan.Data of the world health organizations quality of life instrument-short version (WHOQOL-BREF) was collected by face to face interview with the empty nesters.The risk factors for the quality of life in empty nester elderly in rural area were analyzed by the multiple linear regression analysis.Results A total of 785 valid questionnaires were acquired,among which 472 cases were from empty nester elderly (60.1%,472/785),the average age of them was (69.3±7.3) years,and the male:female ratio was 1.1:1 (250:222).The literacy of 81.8% of empty nester elderly were under junior middle school,69.7% of them married with consorts who were still living,74.4% of them were farmer,75.2% of them had monthly income under 500 Yuan,56.4% of them got the income from their own labor,69.9% of them considered that their relationship with children were harmony.64.2 % of empty nester elderly in village suffered from chronic diseases and 16.7 % of them suffered from accidental injury within the last one year.The scores in physiological health,psychological health and quality of life were lower in empty nester elderly than in the non-empty nester elderly [(60.8±15.7) vs.(63.1±13.5),(59.0±12.1) w (64.6±17.4),(59.5±9.8) vs.(63.0 ± 10.1),t=3.18,4.43,4.91,all P<0.05].The multiple linear regression analysis showed that the influencing factors for quality of life in empty nester elderly were education background,marital status,source of finance,relationship with children,chronic disease and accidental injury within the last one year (β=1.693,2.426,0.779,1.060,-7.007,-3.784,all P<0.05).Conclusions The empty-nest elderly accounts for more than half of the elderly in rural area,who have the lower levels in physio-psychological health and quality of life.We should improve their awareness and knowledge of health,build their harmonious relationship with spouse and children,improve the social security and medical insurance system,actively promote the knowledge of chronic disease and accidental injury,in order to improve the quality of life in empty nester elderly and achieve the healthy aging.
5.Determination of Solubility and Apparent Oil/Water Partition Coefficient of Sitafloxacin
Weiming DING ; Guiling LI ; Cong CAI ; Juxian WANG ; Xinyi YANG
Herald of Medicine 2014;(10):1357-1360
Objective To determine the solubility and apparent oil/ water partition coefficient of sitafloxacin in different solvents. Methods High performance liquid chromatography (HPLC) was used. The column was Dikma Diamonsil C18 (2) (4. 6 mmí250 mm,5 μm). The mobile phase was 0. 05 mol·L-1 KH2 PO4 solution (pH was adjusted with H3 PO4 to 2. 4)-acetonitrile (7030). The column temperature was set at room temperature. The flow rate was 1. 0 mL·min-1 . The detection wavelength was 295 nm and the injection volume was 10 μL. The solubility of sitafloxacin and the apparent oil/ water partition coefficient at pH 2. 0,4. 3,5. 8,6. 6,7. 4,8. 0,10. 0 and 11. 2 were determined. Results The equilibrium solubility of sitafloxacin in water was 0. 44 mg·mL-1 and the apparent oil/ water partition coefficient was 0. 23 (lgP= -0. 64) at (37±2) ℃ . Sitafloxacin has the lowest equilibrium solubility (0. 13 mg·mL-1 ) and the highest apparent oil/ water partition coefficient in pH7. 4 buffer solution system. At pH>10 and pH<5. 8,the solubility of sitafloxacin increased obviously and apparent oil/ water partition coefficient decreased. Conclusion Sitafloxacin is insoluble in water and also poorly soluble in oil,but its solubility could be improved significantly in acidic or alkaline solution.
6.Research progresses of Mycobacterium tuberculosis cytochrome P450s as a potential drug target.
Yun LU ; Feng QIAO ; Xuefu YOU ; Xinyi YANG
Acta Pharmaceutica Sinica 2014;49(4):427-34
Identification and validation of a new target is one of the most important steps for new antituberculosis (TB) drug discovery. Researches have shown that Mycobacterium tuberculosis (Mtb) encodes 20 CYP450 enzymes which play important roles in the synthesis and metabolism of lipid, cholesterol utilization, and the electron transport of respiratory chain in Mtb. With the critical roles within the organism as well as the protein structures of six Mtb CYP450 enzymes being clarified, some of them have been highlighted as potential anti-tuberculosis targets. In this paper, the phylogenetic analysis, the structural features, and the enzymatic functions of Mtb CYPs, as well as the mechanism of interactions with selective inhibitors such as azole antifungal agents for the CYPs have been reviewed and summarized. The druggability of the CYPs has also been analyzed for their further utility as targets in high throughput screening and rational design of more selective inhibitors.
7.Principles of biowaiver about consistency evaluation of generic drug products and varieties of biowaiver in countries and international organizations
Dan YANG ; Chao MA ; Xinyi CHEN ; Boying CHEN ; Xiaowen REN
Drug Evaluation Research 2017;40(2):157-163
Objective For bioequivalence test of the consistency evaluation of generic drug products,providing a reference of varieties of biowaiver.Methods Based on Human bioequivalence test waiver guidelines (draft),on condition that first drug of the consistency evaluation,to introduce and conclude briefly the standards of biowaiver and varieties of biowaiver in FDA,WHO and EMA.Results Contrast to FDA,there are 59 varieties applied for the waiver and 19 varieties not applied for the waiver in the 289 varietie;compared to WHO,10 drugs are exempted and 1 grug is exempted in EMA.Conclusion At present,the specific list of drugs are not published of biowaiver in our country,the pharmaceutical companies should compare and consult revelant standards and specific drugs in China and abroad,to speed up the progress of the consistency evaluation.
8.The Karamay community alcohol abuse and self-rated health status survey
Heyuan CHEN ; Hanyu ZHANG ; Chongsi ZHAO ; Xinyi GAO ; Rongping WANG ; Peiwen CHEN ; Fengchi YANG
Chinese Journal of Behavioral Medicine and Brain Science 2012;21(4):340-342
ObjectiveTo investigate the health status and incidence of alcohol abuse of Xinjiang community residents.MethodsThrough multi-stage random sampling,1992 community residents ( 15-65years old) were assessed using socio-demographic information questionnaire,alcohol use disorders identification test (AUDIT) and self-rated health measurement scale-prior test(SHRMS).Single factor analysis and rank sum test were used to identify the incidence of alcohol abuse,the distribution of different populations,and the self-rated health status of abusers.ResultsTotally 298 cases of alcohol abuse were identified,and accordingly,the prevalence rate of alcohol abuse for general population was 15.1% ( male 26.4%,female 4.8% ).Key factors for alcohol abuse included male,middle-aged,well-educated,at work,administrative work,high income levels and large number of household.The differences among groups were statistical significant.Presumably the workplace population was at high risk of alcohol abuse.Alcohol abusers were significantly worse than general population in self-rated health status(P < 0.01 ),especially in mental health and social health.ConclusionThe incidence of alcohol abuse is relatively high in Xinjiang rcgion,and the problem need more attention.Further survey and early intervention work for highrisk group are advised to achieve the purpose of prevention and control.
9.Theory of mind abilities between autistic children' s and the normal children' s parents
Liqin YANG ; Kai WANG ; Chunyan ZHU ; Yufeng ZHANG ; Xinyi LV ; Hui CAO ; He CHANG
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(9):812-814
Objective To compare the theory of mind(TOM) abilities between autistic children's parents and the normal children' s,and to indirectly prove that TOM deficit in autism maybe related to heredity in cognitive neuropsychology.Methods This study examines TOM abilities in 32 autistic children' s parents and 32 normal children' s parents,using the computerized Yoni task and an extensive battery of neuropsychological tests.Results In contrast to findings in the control group,autistic children' s parents showed significantly lower scores in affective theory of mind( (23.06 ±5.12)vs(25.63 ±4.47),P<0.01 ) and special emotion( ( 10.13 ±4.14)vs ( 14.87 ±2.21 ),P<0.05),but not in cognitive theory of mind( (22.75 ±5.01 ) vs(22.56 ±5.63),P>0.05).Conclusion The autistic children' s parents are impaired in affective theory of mind,and to indirectly prove that autistic TOM deficit maybe related to heredity in cognitive neuropsychology.
10.The clinical significance of estradiol gel applying to the therapy of operation combined with GnRHa in endometriosis
Hui GUO ; Jiajie WU ; Yanhua ZHAO ; Ting YANG ; Yuqi GAO ; Xinyi LIU
Journal of Chinese Physician 2016;18(2):224-227
Objective To investigate the efficacy and tolerability of estradiol (E2) gel with postoperative patients of moderately severe ovarian endometriosis cyst,who suffer from the side effect of GnRH agonist.Methods Sixty samples were selected with stage Ⅲ ~ Ⅳ ovarian endometriosis after conservative operation by the same operator at the Department of Gynecology,Xiangya Hospital,Central South University,between February 2013 and August 2014.All of the patients after surgeries were randomly divided into three groups:control group (n =20) with only goserelin injection after conservative surgery,treatment group A (n =20) who received estradiol gel,and treatment group B (n =20) who received tibolone as an add-back therapy.The serum E2,follicle stimulating hormone (FSH),luteinizing hormone (LH),hypoestrogenic symptoms,the incidence of uterine bleeding,and the recurrence after conservative operation were compared among three groups.Results Three months later aster treatment with goserelin,the serum level of E2 of three groups showed statistically significant difference (P < 0.05).Serum E2 level of treatment group A was not significantly higher than treatment group B (P > 0.05).The kupperman sore,the incidence of hot flashes sweating,tiring,and agrypnia of treatment groups A and B were significantly lower than the control group (P < 0.05).The incidence of uterine bleeding and recurrence dont differ sharply among three groups (P > 0.05).Conclusions GnRHa combined with estradiol gel can improve symptoms of postoperative patients,reduce side effects effectively,and avoid increase of the risk of vagina bleeding and relapse.