Objective To study the clinical characteristics and related factors of type 2 diabetes with different ankle brachial index (ABI).Methods Two hundred and sixty-two patients with type 2 diabetes in Tieying Hospital of Fengtai District of Beijing outpatient and inpatient from January 2012 to April 2015 were selected.General information,blood biochemical parameters and ABI of patients were tested and collected.The patients were classified into three groups according to the different ABI.A group was ABI＜0.9 with 40 cases,B group was ABI 0.9-1.3 with 191 cases,C group was ABI＞1.3 with 31 cases.The clinical characteristics of three groups were analyzed.Results The age of the patients in group B was younger than that in group A and C((62±15) years old vs.(72±10) years old vs.(71±9) years old,P=0.048).The duration of disease in group B was shorter than that in group A and C((6±6) years vs.(10±2) years vs.(11±3) years,P=0.037).The Blood uric acid of patient in group B were lower than those of patient in group A and C((320±111) μmol/L vs.(350±110) μmol/L vs.(338±109) μmol/L,P=0.039).The glycosylated hemoglobin levels of patient in group Bwere higher than those of patient in group A and C((9.5±1.8)％ vs.(7.2±2.3)％ vs.(8.8±2.0) ％,P=0.041).Compared with group A,the level of UA,HbA1c in group B were more higher(P＜0.05).The incidence rate of diabetic foot was 23％ (9/40) in group A,6％ (11/191) in group B,23％ (7/31) in group C,and the difference was significant(P=0.042).Compared with group A and C,the the incidence rate of diabetic foot in group B was the lower(P＜0.05).Correlation analysis showed that ABI was negatively correlated with age,course of disease,HbA1c(r=-0.65,-0.70,-0.79,-0.61,P＜0.05).Conclusion Different ABI of patients with type 2 diabetes have different clinical features.With increasing age,disease duration,glycosylated hemoglobin and blood uric acid level,it is likely to cause patients with abnormal ABI and increase the probability of occurrence of diabetic foot.

Objective To study the expression and clinical significance of serum 1,25-dihydroxyvitamin D3 in different stages of diabetic nephropathy patients.Methods Ninety-eight cases of diabetics were selected as our subjects in observation group,who were hospitalized in Tieying Hospital of Fengtai District of Beijing from January 2010 to December 2014.They were divided into diabetics group(36 cases,UAER ＜30 mg/24 h),microalbuminuria group(32 cases,UAER was 30-300 mg/24 h),massive proteinuria group (30cases,UAER＞300 mg/24 h).One hundred healthy persons were selected as a normal control group over the same period.The changes of fasting blood glucose,course of disease,blood lipid,serum creatinine and serum 1,25-dihydroxyvitamin D3 in all groups were recorded.Results Fasting blood glucose,serum creatinine and serum 1,25-dihydroxyvitamin D3 were (8.97±2.3) mmol/L,(76.2±19.5) μmol/L,(28.9±13.6) μg/L in observation group,and (4.7±0.4) mmol/L,(63.1±12.0) μmol/L,(70.1±21.3) μg/L in control group respectively,the difference between the two group was statistically significant (P =0.031,0.046,0.028).Serum 1,25-dihydroxyvitamin D3 was (52.68±20.91) μg/L in patients of diabetics group,(31.40±15.23) μg/L in microabuminuria group,(15.76±7.81) μg/L in massive proteinuria group,the difference among the three group was statistically significant (P =0.036).Serum 1,25-dihydroxyvitamin D3 of microabuminuria group and massive proteinuria group were lower than of diabetics group,of massive proteinuria group was lower than of microabuminuria group(P＜0.05).Serum 1,25-dihydroxyvitamin D3 was negatively correlated with the cause of disease(r=-0.301),fasting blood glucose (r =-0.281) and serum creatinine (r =-0.536) in patients with type 2 diabetes,the difference was statistically significant (P ＜ 0.05).Conclusion Serum 1,25-dihydroxyvitamin D3 in patients with diabetic nephropathy decrease in different degree,which reflects the severity of renal damage.The results indicate that reduction of serum 1,25-dihydroxyvitamin D3 may be involved in the occurrence and development of diabetic nephropathy

Long-term potentiation(LTP)is a typical model of synaptic plasticity which has great relationship with learning and memory mechanisms:The induction of LTP depends on the activation of the calcium channels and LTPs generated by calcium ions influx through different channels play different roles in memory.This paper reviews the progress of the research on LTPs induced by activations of N-methyl-D-aspanate receptor(NMDAR)channels and voltage-dependent calcium channels(VDCC).Finally,it gives an example of new forms of low frequency stimulation for induction of LTP.

This paper describes virtual instrumentation and its most representative developing environment-LabVIEW. The use of LabVIEW to program custom functions ,such as signal acquisition ,processing ,system control ,in biomedical research ,is also introduced.

let-7e is one member of let-7 miRNA family, a class of endogenous noncoding RNA which consists of 22 nucleotides. The recent miRNA profiles investigation and analysis results showed that let-7e could be involved in embryonic stem cells differentiation, tumorigenesis in cancer, temporal lobe epilepsy and sleep loss, lipopolysaccharide induced inflammation by regulating its target mRNA expression. This paper gives a review of the important biological function of let-7e.

Experiments were carried on cultured neonatal myocardial cells of rat to study the effects of angiotensin Ⅰ(AngⅠ) and Ⅱ (AngⅡ) on the synthesis of DNA, RNA, protein and on the cardiac hypertrophy. It was shown that the incorporation of both ~3H-TdR and ~(14)C-uR increased over a set of time periods after addition of AngⅠ and AngⅡ to the medium. The mean protein content of the single myocardial cell was also enhanced, and the volume of myocardial cell was increased significantly after a continuous stimulation of AngⅠ and AngⅡ for 7 days. No stimulation effect was observed either in the synthesis of DNA, RNA, and protein or in the volume of myocardial cells after addition of AngⅠ together with the angiotensin converting enzyme inhibitor(ACEI, captopril). These results indicated that: (1). AngⅠ acts as a regulator by its indirect stimulation effect on the synthesis of DNA, RNA and protein of myocardial cells, since it must be changed into AngⅡ by the ACE present in myocardial cells. The ACE can be inhibited by the ACEI: (2) The hypertrophy of cultured neonatal myocardial cells may induced by a continuous stimulation of AngⅠ and AngⅡ.

Objective Working memory (WM) is one of important cognitive functions.The aim of this study was to investigate spatial distributions of electroencephalographs (EEGs) power during visual WM task,which may provide support for studying the principal frequency band and critical region related to WM.Methods 32-channel EEGs were recorded from 16 healthy subjects while they perform visual WM task.The data came from 240 trials and the original EEGs were preprocessed.Fourier transform was applied to calculate spatial distributions of EEGs power in the δ,θ,α,β,γfrequency bands and the percentage of each band in the total power.Results The percentages of δ,θ,α,β,γbands in the total power were (22.44±0.86)％,(31.88±0.55)％,(24.66±1.43)％,(13.54±0.64)％,(7.47±0.48)％,respectively.The power in the θ band was significantly higher than those in the other bands (paired t-test,P＜0.001).The θ power was focused in the frontal midline region.Conclusions The principal frequency band related to WM was the θ band and the critical region was the frontal region.

Objective:To investigate the infiltration of CD45RO+ T cells and CD68+ cells in the lesions of non-neoplastic epithelial disorder and in vulva cancer.Methods:The infiltration of CD45RO+ T cells and CD68+ cells was detected with S-P immunohistochemistry in the lesions of 20 non-neoplastic epithelial disorders,including vulvar squamous cell hyperplasia(SH) and vulvar lichen sclerosus(LS)) and vulvar cancer,respectively.The vulvar skins from 10 healthy individuals were selected as the control.Results:The infiltration of CD45RO+ T cells and CD68+ cells in healthy vulvar skin was very low and significantly lower than that in SH,LS and vulvar cancer(P0.05).The number of both cells were significantly higher than that in SH,poorly vulvar cancer and early stage of LS(P0.05).The infiltration of CD68+ cells was shown in a positive correlation with CD45RO+ T cells in the different lesion of vulva,the correlation coefficient was 0.742(P

Medical image registration plays an important role in the research of medical image processing field. It is widely used in the areas of clinical diagnoses, treatment, quality assurance and evaluation of curative effect. This paper gives an overview on three medical image registration methods Correlation method, mutual information method, and wavelet transform method. Features of these method and their applications are reviewed.

Dual antiplatelet therapy is the standard treatment for patients with acute coronary syndrome (ACS) and coronary heart disease interventional treatment. Clopidogrel, a traditional antiplatelet agent, has some disadvantages, such as slow onset time, individual differences and dissatisfy the antithrombosis requirement in ischemia of high-risk patients. In addition, for ACS patients with indications of anticoagulation, antiplatelet therapy cannot prevent venous thromboembolic events. However, dual antiplatelet combined with anticoagulant therapy may decrease the risk of ischemic events at the price of increasing bleeding. With the development of new antithrombotic agents, the antithrombotic strategy for ACS has made some progress, such as antiplatelet strategy for ACS, antithrombotic strategy for ACS with indication of anticoagulation and new antithrombotic drugs. With the development of clinical antithrombotic drug research, the patients with ACS will benefit from the optimized strategy of combined with antithrombotic therapy.