It is reported that lipid-regulators including statins, nicotinic acid and fibrates can induce severe adverse reactions such as myopathy, even rhabdomyolysis which endangers the patient's life. The authors have discussed the relationship between lipid-regulators and myopathy, rhabdomyolysis, how those drugs cause these adverse reactions and the major factors for myopathy and rhabdomyolysis in order to deepen the knowledge, prevent the happenness of these diseases and develop the more effective and safer lipid-regulators.

Objective To investigate the inhibitory effect of siRNA targeting casein kinase 2 (CK2α)gene on the growth of HCT1 1 6 cells and to clarify its mechanism.Methods CK2α-siRNA sequence was designed according to mRNA sequence of CK2α. The in vitro cultured HCT1 1 6 cells were divided into normal control group (without transfection),negative control group (transfected with siRNA)and CK2α-siRNA group (transfected with CK2α-siRNA ),and the HCT116 cells were transfected with Lipofectamine 2000.The expression levels of CK2α,cyclin H,P53,and P21 proteins in the HCT116 cells were detected by Western blottting method,and the proliferation activities of the HCT116 cells were detected by MTT method,and the cell cycle was measured by flow cytometry. Results Compared with negative control group,the expression levels of CK2α,and cyclin H proteins in CK2α-siRNA group were decreased(P<0.01);the expression level of P53 protein had no change dramatically(P>0.05), and the expression level of P21 protein was increased significantly(P<0.01).Compared with negative control group,the survival rate in CK2α-siRNA group was decreased markedly 48 and 72 h after transfection detected by MTT method(P<0.01).Flow cytometry analysis showed the percent of the cells at G1 phase in CK2α-siRNA group was significantly higher than that in negative control group and the percent of the cells at S phase in CK2α-siRNA group was lower than that in negative control group(P<0.01),and the cell cycle was arrested at G1 phase. Conclusion siRNA targeting CK2αcan inhibit the proliferation of HCT116 cells and induce the arrest of G1 phase, which may be associated with inhibiting the expression of cyclin H and recovering the P53 activity after silencing CK2α.

Objective To analyze the magnetic resonance imaging ( MRI ) appearances of spontaneous intracranial hypotension syndrome ( SIHS) ,in order to improve the understanding of this disease .Methods The clini-cal data of 7 patients with SIHS confirmed by lumbar puncture were retrospectively analyzed .MRI was performed in all cases,in which there were 6 cases with contrast-enhanced MRI.Results All of them showed diffusely thickening of dural.6 cases with brain contrast-enhanced MRI demonstrated linear ,non-nodular and diffusely dural enhancement . The dilation of sinus and great vein were observed in 5 cases,subdural hydroma in 2 cases,brain sagging in 3 cases, pituitary gland plumpness in 2 cases,subdural hematoma in 1 case and 1 case with linear spinal dural enhancement . Conclusion The MRI manifestations of SIHS are characteristic ,and it will be helpful for the diagnosis by combining clinical data.

This study is to investigate the effect of hydroxyethylpuerarin on the expression of tumor necrosis factor-alpha (TNF-α) and activity of nuclear factor kappa B (NF-κB) after middle cerebral artery occlusion (MCAO) in rats. Rats were subjected to cerebral ischemia-reperfusion injury induced by MCAO. Hydroxyethylpuerarin (10, 20, 40 mg·kg-1, iv) was administered just 30 min before occlusion and immediately after reperfusion. After a 24 h reperfusion following 2 h of MCAO, the number of viable neurons in hippocampal CA1 region was counted by hematoxylin and eosin (HE) staining. TNF-α protein and its mRNA expression were examined with radioimmunoassay (RIA) and reverse transcriptase-polymerase chain reaction (RT-PCR) respectively. NF-κB activity was observed by electrophoretic mobility shift assay (EMSA), and inhibition of NF-κB α (IκBα) protein expression was evaluated by Western blotting analysis. Animals treated with hydroxyethylpuerarin had a significant increase in neuronal survival in comparison with vehicle-treated group. Hydroxyethylpuerarin significantly reduced the protein and mRNA expression of TNF-α following 2 h of ischemia with 24 h of reperfusion. NF-κB DNA binding activity and the degradation of IκBα in the cytoplasm also decreased by hydroxyethylpuerarin treatment. The protective effects of hydroxyethylpuerarin against ischemia-reperfusion injury may be mediated by decreasing the expression of TNF-α and the activity of NF-κB in rats.

Objective To investigate the change of genomic DNA of liver and spleen tissue for different age of the elderly,and provide the experimental data for aging-related research. Methods 35 livers and 33 spleens of autopsied samples preserved in refrigerator at-80 ℃ were divided into 3 groups according to age:age 65y to 79y,age 80y to 89y,age≥90y. The content of DNA in liver and spleen was determined by ultraviolet absorbent method. Results Compaired with age 80y to 89y (0. 310 ± 0. 286)mg/mL,the content of DNA in liver was significant higher at age 65y to 79y (1.464 ±0.488)mg/mL and age ≥90y(1.147 ±0.333)mg/mL(P<0.05);Compared with age 80y to 89y(0. 938 ± 0. 589)mg/mL,the content of DNA in spleen was significant higher at age 65y to 79y(1. 723 ± 0. 726)mg/mL and age≥90y(1. 688 ± 0. 963)mg/mL(P<0. 05). The content of DNA was significant lower in liver (0. 856 ± 0. 658)mg/mL than that in spleen (1. 414 ± 0. 852)mg/mL. Conclusion The content of DNA in human liver and spleen tissue may be decrease along with aging. The content of DNA in the group at age≥90y may be increase. There were some differences between different viscera tissue in content of DNA.

OBJECTIVE:To explore the relationship between several common traits-identify characteristics of decoction pieces and laboratory test results,and improve the efficiency and accuracy of line inspection work. METHODS:Combined with the Chi-nese Pharmacopoeia(2010 edition)standards and traditional inspection experience,and collected decoction pieces,the accuracy of traits-identification points were inferred and increased by the ways of TLC,contents,aggravated powder,sulfur dioxide residues , staining and extract. RESULTS:The majority of decoction pieces had the relationship between character identification points and laboratory test results and a small part didn’t. CONCLUSIONS:This study has cleared the identification accuracy of several com-mon decoction pieces,and other parts of the differential diagnosis needs further exploration.

Objective To determine the plasma urolensin Ⅱ(UⅡ) levels in various types of coronary heart disease and to clarify how the plasma UⅡ levels correlate with the clinical presentation, extent and severity of coronary artery atherosclerosis (CAD). Methods: One hundred and three aged patients undergoing elective diagnostic coronary angiography for proven or clinical suspected coronary heart disease were enrolled in this study. The extent and severity of coronary artery disease were evaluated by vessel score and Gensini score, respectively. Plasma UⅡ levels were measured by radioimmunoassay. Results: The plasma UⅡ levels in the patients with modest to severe coronary stenosis (3.03±0.34 pg/ml, 1.83±0.67 pg/ml) were significantly lower than that in subjects with normal coronary artery (4.80±1.11 pg/ml, P＜0.001). The plasma UⅡ levels in patients with coronary heart disease were also significantly lower than that in patients with insignificant coronary stenosis (P ＜ 0.001). Compared to patients with stable angina pectoris, plasma UⅡ levels in patients with acute coronary syndrome were significantly decreased (1.89±0.51 pg/ml vs 2.42±0.77 pg/ml, P＜ 0.001). Plasma UⅡ levels were found to be negatively correlated with the severity of coronary artery stenosis (r = -0.488, P＜0.001), as well as the vessel score (r = -0.408, P＜0.05) in the patients with CAD. Conclusion: Significant inverse correlations exist between the plasma UⅡ levels, and the extent and severity of coronary artery stenosis. These findings suggest that plasma UⅡ contribute to the development and progression of coronary artery stenosis, and may be a novel marker to predict clinical types, as well as the extent and severity of coronary artery disease in the patients.

Objective To investigate the accuracy and safety of using normal saline as a medium to guide the catheter lumen to assist the localization of the catheter tip. Methods This study included the patients with hematological malignancies in our fully implantable venous port. We enrolled 105 patients from January 2014 to December 2015 as control group, and 220 patients from January 2016 to June 2017 as the experimental group. The control group used the traditional fully implantable venous port after the chest X slice to determine the location of the catheter tip. The experimental group used the intracavitary electrocardiogram location technology to assist the complete implantable venous port catheter tip positioning catheter, then chest X film. Results No catheterization occurred in all the patients. The rate of catheter placement was 100％. In the experimental group, 179 patients (81.36％) had the best placement of catheter tip (i.e., superior vena cava right atrium junction, CAJ), and 35 patients (52.38％) in the control group had the best placement of catheter tip. The proportion of the catheter tip located in the best position (the superior vena cava auricular commissure and CAJ) in the experimental group was higher than that in the control group (χ2=29.615, P < 0.05). Conclusions By the injection of saline guided endocardial mapping real-time monitoring of totally implantable venous transfusion port catheter tip position, can guide the surgeon to grasp the real-time operational direction of totally implantable venous transfusion port catheter tip, accurately positioning the catheter tip position, improve the surgical success rate, worthy of clinical use.

Objective Based on the three-dimensional quality structure model,to construct the nursing quality evaluation index system for acute leukemia,in order to provide references for clinical evaluation of quality of nursing care for acute leukemia.Methods Based on the theory of Donabedian's structure-process-outcome quality structure model,through literature search,semi-structured interview,expert meeting,expert consultation and analytic hierarchy process,the quality evaluation index system and index weight for acute leukemia were determined.Results After two rounds of expert consultation,questionnaire response rates were 94.74％,100％;expert authority coefficients were 0.848,0.854;Kendall coordination coefficients were 0.273,0.420,and P values were all less than 0.01.The final index system consisted of 3 first-level indicators,8 second-level indicators,and 24 third-level indicators (3 structure indicators,7 process indicators,14 outcome indicators).Each of third-level indicators contained index names,calculation methods,and data collection methods.Conclusion The process of construction of nursing quality evaluation index system for acute leukemia is scientific,the contents are reasonable,which can reflect nursing characteristics of acute leukemia.

Objective To analyze the effect of lumbar bone marrow composition on bone marrow diffu-sion-weighted imaging(DWI)in healthy adult women.Methods Retrospective analysis was performed on up-per abdominal MRI of 103 adult women.Bone marrow fat fraction of lumbar vertebra was measured according to two-point water-lipid separation technique,and apparent diffusion coefficient(ADC)value of lumbar verte-bra was measured according to DWI image(b=800 s/mm2).The subjects were divided into the high-signal group and the equal-low-signal group according to the signal intensity of lumbar vertebra and adjacent erector spine muscles.The effects of age,lumbar bone marrow fat fraction and menstrual status on the signal intensity and ADC value of lumbar bone marrow diffusion were analyzed.Finally,the correlation between lumbar bone marrow fat fraction and ADC value was analyzed.Results Univariate analysis showed that the lumbar bone marrow diffusion signal intensity and ADC value were affected by age,lumbar bone marrow fat fraction and menstrual status(P＜0.001).Multivariate analysis showed that age(P=0.046)and lumbar bone marrow fat fraction(P=0.005)were the influencing factors of lumbar bone marrow diffusion signal intensity,but men-strual status(P=0.242)was not the influencing factor.In addition,lumbar bone marrow fat fraction(P＜0.001)was the factor influencing the ADC value of lumbar bone marrow,and the two were negatively correla-ted(r=-0.607,P＜0.001),but age(P=0.497)and menstrual status(P=0.082)were not the influencing factors.Conclusion The bone marrow composition of lumbar vertebrae in healthy adult women has significant effects on the signal intensity and ADC value of bone marrow diffusion.