OBJECTIVE:To establish the method of determining the gliclazide in human serum by solid-phase extraction combined with HPLC.METHODS:The pre-treatment of plasma sample was carried out by solid-phase extraction.The chromatographic column was Zirchrom;the mobile phase was methyl cyanide-0.2%glacial acetic acid(60∶40);the UV de-tection wavelength was229nm;the column temperature was40℃and the flow rate was1.0ml/min.The blood concentration of gliclazide was determined with glipizide as the internal standard.RESULTS:The calibration curve was linear within the range of0.1～10.0?g/ml(r=0.9966);the average recovery was99.96%;the RSD of both intraday and inter-day were below10%. CONCLUSION:The method is simple and the determination result is accurate and with little interference,which is suitable for the study of the pharmacokinetics and bioavailability of gliclazide.

Objective To explore the effect of health failure mode and effects analysis(HFMEA)in reducing the risk of medication errors in of inpatients.Methods HFMEA was used to assess potential risk factors for medica-tion management process,in order to analyze the failure mode and the causes of potential risks.Effective precautionary measures were formulated and implemented.Results After the intervention.the incidence rate of errors in medication had been reduced from 5.21% to 1.77%,and the difference was statistically significant(χ2 =201.06,P <0.01). Conclusion HFMEA is effective in reducing the events of errors in medicine of inpatients.So as to guarantee the safety of the clinical medication of inpatients.

With the available network resource in colleges or universities,we structured long-range network teaching platform in medical science and unified the advantages of the net-work technique and multimedia technique to improve the theory and practice level of medical students.Network teaching has broken the tradition teaching pattern and it will produce signifi-cant effect in reformation and development of modern medicine teaching,and will raise the level of medicine teaching.

Cerebral small vessel disease (SVD) is an important subtype of cerebrovascular disease. It is also one of the major reasons for resulting in vascular cognitive impairment or dementia in the elderly. SVD is a small arteriovenous lesion in subcortex caused by a variety of causes, mainly causing subcortical lacunar infarction, white matter damage, microblecds and other pathological changes. There is evidence that vascular endothelial function and blood-brain barrier damage may result in small vessel structures and perivascular changes, which may be the initial factors.of causing SVD. Genetic susceptibility is also one of the risk factors that can not be ignored.

Objective To study the effect of Shenqiwan and vitamin E on mtDNA 4834 deletion in a mimetic aging rat model .Methods Forty rats three months old ,were randomly divided into four groups :group A ,which was treated with hypodermic 5 % D -galactose for 8 weeks ,and group B (shenqiwan group ,n=10) which was treated daily with Shenqiwan for 2 weeks after hypodermic 5 % D -galactose for 6 weeks ,group C (vitamin E group ,n = 10) which were treated daily with Vitamin E for 2 weeks after hypodermic 5 % D -galactose for 6 weeks ,group D were given saline only .Auditory brainstem response (ABR) was used to detect the hearing thresh-old of rats before and after the treatment .The inner ear tissue was harvested and mitochondrial DNA was amplified to identify the 4834 bp deletion mutation by nested primer polymerase chain reaction (nested PCR) technique .Re-sults The threshold of ABR in the group A ,B and C were significant higher than that in group D .However the difference in shift of ABR threshold between group A ,B ,C and group D was not significant .The mtDNA4834 de-letion rate in three modeled groups (group A ,B ,C) was significant high than that of in group D .There was statis-tically significant difference between the treated group (group B ,C) and the model group (group A) on mtDNA4834 deletion in cochlea ,but the difference between the treated groups on mtDNA 4834 deletion in cochlea was not statistically significant .Conclusion Shenqiwan and vitamin E can reduce the aging induced mtDNA 4834 deletion in aging rats inner ear .

Objective To investigate the effect of tea polyphenols and sulforaphane on the expression of protein kinase A anchoring protein 95 and cyclin E2 in lung cancer tissue.Methods 56 cases confirmed by pathology and operation therapy for lung cancer patients,were randomly divided into combined treatment group and control group,each had 28 cases.The content of protein kinase A anchoring protein 95 and cell cycle protein E2 in all patients were determined with ELISA.The expression of protein kinase A anchoring protein 95,cyclin E2 and statistics of microvessel density(MVD) were detected by immunohistochemical SP method.The protein levels of protein kinase A anchoring protein 95 and cell cycle protein E2 protein were detected by Western Blot. Results The contents of protein kinase A anchoring protein 95 and cyclin E2 in control group were higher than that in combination group,the differences were statistically significant(P<0.01 ).Immunohistochemical SP results showed that protein kinase A anchoring protein 95 and cyclin E2 expression all had positive expression,and the MVD in control group was higher than combination group(P<0.01);Western Blot results showed that the expressions of protein kinase A anchoring protein 95 and cyclin E2 protein in control group were higher than combination group(P<0.01).Conclusion Protein kinase A anchoring protein 95 and cyclin E2 expressions are increased in both groups in lung cancer tissues,and they are positively correlated,negatively correlated with drug treatment,which can be used as the indexes of lung cancer evaluation.

Objective: To evaluate the reliability and validity of the Chinese version of Frost's Multidimensional Perfectionism Scale(FMPS).Methods: One thousand two hundred and eighty Chinese undergraduate students participated in the study and responded to the FMPS and instruments measuring psychological distresses such as anxiety,depression,and obsession-compulsion.Both exploratory and confirmatory factor analyses were used to examine the factor structure of the Chinese FMPS.The association between FMPS and psychological distresses was analyzed as an investigation for criterion validity.Results: Factor analyses extracted five of the original six factors of FMPS.PC did not emerge as a dimension.The five subscales were shown to have satisfactory internal consistencies with Cronbach's alpha between 0.64 and 0.81 and test-retest reliability 0.63~0.82.Chinese FMPS was associated with anxiety,depression,and obsession-compulsion.Particularly,CM and DA are correlated with these psychological distresses with coefficients between 0.30 and 0.70.Conclusion: Chinese FMPS is satisfactorily valid and reliable.It is suitable to use in Chinese college students.

Hemoglobin (Hb) regeneration method in rats was used to prove the effect of pigmented rice on iron dificiency anemia (IDA). IDA was induced in 90 Wistar male weaning rats by feeding low iron diet for 25 days. Fifty of the anemic rats were divided into 5 groups; low iron, nonpigmented milled rice, pigmented milled rice, pigmented semibrown rice and control (compared only with the pigmented milled rice group). The result of 30 days experiment showed that pigmented rice was superior to nonpigmented rice in Hb regeneration and the semibrown was superior to the milled. Pigmented rice, especially the semibrown, was found to possess more iron than nonpigmented rice. There was a close correlation between the degree of Hb regeneration and the quantity of iron taken by rats or the quantity of iron in diets. These evidences suggested that pigmented rice had certain prophylactic and curing effect against IDA and this was probably due to its higher iron content.

OBJECTIVE:To study the effect of five penetration enhancers on the transdermal permeability of sodium phenytoin in vitro.METHODS:Experiments were carried on penetration experimental facility using modified Franz-type horizontal diffusion cell with 0.9% sodium chloride as receptor solution.The content of sodium phenytoin in the receptor solution was determined by HPLC,and its accumulative permeation amounts and steady permeation rate were computed as well.The permeability of sodium phenytoin across the excised rat abdomen skin which has been pretreated with different penetration enhancers-ocenol(3%,5%,and 10%),menthol(3%,5%,and 8%),eucalyptus oil(0.5%,1%,and 3%),azone(1%,3%,and 5%) and N-methyl pyrolidone(3%,5%,and 8%) was observed.RESULTS:Five enhancers did improve the transdermal delivery of sodium phenytoin in a concentration dependent manner.At a respective optimum concentration,the permeation enhancing effects of enhancers in ascending order were 5% N-methyl pyrolidone

The endoplasmic reticulum is a major organelle of mammalian cells in where protein processing takes place.Excessive endoplasmic reticulum stress (ERS) induced by various factors may lead to cellular structural abnormality and functional dysfunction,even cell death.Age-related macular degeneration (AMD)is caused by multifactors and is a common cause of blindness.Inducers of ERS,such as oxidative stress,inflammation and disorder of fat metabolism,have been found to play critical role in AMD.These factors promote the excess expression of vascular endothelial growth factor (VEGF)in retinal pigment epithelium (RPE),which is the key factor that triggers the conversion from dry AMD to wet form.This article mainly summarized the primary process and mechanism of ERS as well as interactions among oxidative stress,inflammation and ERS in AMD pathogenesis.