As a fundamental component of the host cellular cytoskeleton, actin is routinely engaged by infecting viruses. Furthermore, viruses from diverse groups, and infecting diverse hosts, have convergently evolved an array of mechanisms for manipulating the actin cytoskeleton for efifcacious infection. An ongoing chorus of research now indicates that the actin cytoskeleton is critical for viral replication at many stages of the viral life cycle, including binding, entry, nuclear localization, genomic transcription and reverse transcription, assembly, and egress/dissemination. Speciifcally, viruses subvert the force-generating and macromolecular scaffolding properties of the actin cytoskeleton to propel viral surifng, internalization, and migration within the cell. Additionally, viruses utilize the actin cytoskeleton to support and organize assembly sites, and eject budding virions for cell-to-cell transmission. It is the purpose of this review to provide an overview of current research, focusing on the various mechanisms and themes of virus-mediated actin modulation described therein.

Objective To investigate the effect of comprehensive intervention including education, lifestyle intervention and drug intervention for patients with hypertension in Kailuan community. Methods Employees who took part in the health checkup of Kailuan Group, Ltd. from June 2008 to June 2009 were enrolled in this study. The changes of hypertension awareness, treatment and control rates and cardiovascular health behaviors and factors have been observed in the follow-up. Results A total of 5 361 patients with hypertension were enrolled. After a period of 2 years of follow-up, the treatment rate and up to standard rate hypertension were significantly increased compared to pre-intervention (11.90%vs. 100.00%;0.82% vs. 36.93%. P<0.01). After comprehensive intervention, the average score of ideal cardiovascular health behaviors and factors increased from (6.85 ± 1.90) to (7.52 ± 1.92) (P<0.01). Conclusion Comprehensive intervention is an effective means for the prevention and control of hypertension in the community.

[Summary] Lumbar disc herniation is rare in juveniles , which makes it more difficult to diagnose and treat .The prevalence , causes and risk factors , pathological changes , clinical characteristics , main treatment methods , and curative effects of lumbar disc herniation in juveniles were summarized in this review , for benefiting clinical diagnosis and treatment .

This article gives insights into a series of research on the purpose, significance, system, execution and as-sessment of Medical Humanities Curriculums, based on the problems of the existing medical education. The MedicalHumanities Curriculums are divided into three major groups: the fundamental, the comprehensive and the practical,detailedly reasoned by their contents and functions.[

In the span of the interactions between cells and biomaterials, cell adhesion is the first biological behavior which has important effects on the following biological behaviors including cell migration, proliferation, and differentiation. So how to improve cell adhesion of biomaterials has become an important subject of tissue engi- neering. One of the popular methods is the surface modification of biomaterials. This article reviews the development of the research on the surface modification of biomaterials for improving cell adhesion.

Objective To investigate the association between left ventricular diastolic function and arterial stiffness in patients with type 2 diabetes mellitus. Methods One hundred and two patients with type 2 diabetes( diabetic group),and 126 non-diabetic patients( control group) were selected from Jan. 2012 to Dec. 2013 in the Beijing Military General Hospital. The clinical features were recorded and free blood glucose (FBG ),blood lipids were measured. Cardio ankle vascular index( CAVI ) was measured by VS-1000 arteriosclerosis detector. Ultrasound heartbeat diagram was used to determine the left ventricular diastolic function indexes including the left atrial diameter(LAD),left ventricular early diastolicpeak velocity(E),left ventricular diastolic peak velocity(A),E/ A ratio and E peak deceleration time(EDT). Results The level of LAD,A, EDT,CAVI in diabetic patients were(39. 5 ± 5. 3)mm,(76. 6 ± 13. 5)cm/ s,(206. 6 ± 56. 3)ms,(9. 6 ± 1. 1)respectively,higher than those in control group((34. 4 ± 4. 2)mm,(71. 3 ± 13. 4)cm/ s,(185. 5 ± 34. 4)ms,(8. 5 ± 0. 9)). And E,E/ A level in diabetic group were(56. 6 ± 20. 4)cm/ s and(0. 73 ± 0. 21),significantly lower than the control group((67. 5 ± 16. 4)cm/ s and(0. 96 ± 0. 26)). The differences between the two groups were significant(P = 0. 001,0. 004,0. 002,0. 001,0. 001,0. 001). After adjusting the factors including body mass index and triglyceride,CAVI was negatively correlated with E/ A(r = - 0. 339,P< 0. 05))and positively correlated with EDT(r = 0. 314,P < 0. 05). Conclusion The diabetic patients with lower diastolic function and higher arterial stiffness,and the two factors are negatively correlation.

OBJECTIVE: To establish headspace capillary gas chromatography for the content determination of residual solvents in letrozole, such as chloroform, ethanol, acetone, ethyl acetate, DMF and isopropanol. METHODS: Dissolved in dimethyl sulfoxide, chloroform, ethanol, acetone, ethyl acetate, DMF and isopropanol in letrozole were determined by headspace gas chromatography with HP-5 capillary gas chromatography. ECD was applied for chloroform, while FID was applied for the other residual solvents. RESULTS: The liner ranges of chloroform, ethanol, acetone, ethyl acetate, DMF and isopropanol were 1.028～10.28 mg?L-1(r=0.999 9), 94.68～946.8 mg?L-1 (r=0.999 7), 94.64～946.4 mg?L-1(r=0.999 7), 110.64～1 106.4 mg?L-1(r=0.999 7), 15.12～151.2 mg?L-1(r=0.999 6), 116.48～1 164.8 mg?L-1(r=0.999 5), respectively. The average recoveries of the residual organic solvents ranged from 97% to 102%. The detection limits were 20～90 ?g?L-1. The residual levels of the six organic solvents in three batches of samples were all up to the standard stipulated in Chinese Pharmacopeia. CONCLUSIONS: The method is simple, sensitive, accurate and reliable for the content determination of residual organic solvents in letrozole.

Objective To investigate the correlation of short-term systolic blood pressure variability (SBPV) with esti?mated glomeruar filtration rate (eGFR) in the elderly. Methods In physical examination for the third time of kailuan group, the method of cluster sampling was used to collect randomly retired employees, age≥60 in kailuan group. The 24-hour am?bulatory blood pressure monitoring was given to these objects. Finally, 1 405 participants with integral data were recruited in?to the survey. SBPV indices were standard deviation of systolic blood pressure (SD), variability independent of the mean (VIM), maximum-minimum difference (MMD), and average real variability (ARV). Multivariate stepwise linear regression models were used to analyze the influence of short-term SBPV on eGFR. Results (1) Among 1 405 participants (67.16 ± 5.82) years, 933 individuals (66.4%) were male and 472 (33.6%) were female. (2) Study population were divided into four groups based on the 24-hour mean SBP, daytime mean SBP, night time mean SBP (group 1:mean SBP<120 mmHg, group 2:120≤mean SBP<140 mmHg, group 3:140≤mean SBP<160 mmHg, group 4:mean SBP≥160 mmHg), respectively. Values of SD, MMD and ARV, but not VIM were increased with increased mean SBP. (3) The participants were grouped according to the median SBPV with between-group comparison of the eGFR. The average eGFR levels were lower in the high 24-hour SB?PV group (SD, VIM, MMD and ARV), day-time SBPV group (SD, VIM, MMD and ARV) and night-time SBPV group (SD, MMD and ARV) than those in the low SBPV groups (P<0.05). (4) Multivariate stepwise linear regression showed that eGFR increased with 3 indices of 24-hour SBPV (SD, MMD and ARV) and 2 indices of day-time SBPV (MMD and ARV) but not for night-time SBPV (β=-0.07,-0.11,-0.07,-0.12 and-0.07, respectively). Conclusion There is a certain degree of asso?ciation between short-term SBPV indices and eGFR.

Objective:To analyze long-term therapeutic effect and safety of warfarin anticoagulant therapy of differ- ent intensity on aged patients with nonvalvular atrial fibrillation (NVAF). Methods:According to age,a total of 197 NVAF patients followed up for five years were divided into advanced aged group [n=65,≥80 (85.00±2.09) years],aged group [n=75,65-79 (76.50±2.27)years]and middle-aged group [n=57,<65 (57.40±2.18) years].All enrolled patients received long-term warfarin anticoagulant therapy,advanced aged group and aged group received low intensity anticoagulation,international normalized ratio (INR)was 1.6~2.5,while middle-aged group received standard intensity anticoagulation and the INR was 2.0~3.0. Thrombus events and incidence rates of hemorrhage etc.over five years were compared among three groups,and the safe dose range of warfarin was ex- plored.Results:During five-year follow-up,no acute cerebral infarction occurred in three groups.The bleeding and other adverse reaction among three groups were no significant difference (P>0.05).Compared with middle- aged group,there were significant reductions in warfarin dose [(3.29±0.49)mg/d vs.(2.95±0.38)mg/d,(2.85 ±0.49)mg/d],INR [(2.54±0.43)vs.(2.20±0.29),(2.16±0.32)]and CHA2DS2-VASc [(3.02±0.89) scores vs.(2.64±0.77)scores vs.(2.33±0.48)scores]in aged group and advanced aged group,P<0.01 all;but there were no significant difference between aged group and advanced aged group (P>0.05).There were no signif- icant difference in incidence rates of mild hemorrhage (21.1% vs.14.7% vs.24.6%)and severe hemorrhage (1.8% vs.1.3% vs.1.5%)among middle-aged group,aged group and advanced aged group,P>0.05 all.Conclu-sion:When INR is closely monitored,INR controlled within 1.6-2.5 warfarin anticoagulation is safe and effective for in aged patients with nonvalvular atrial fibrillation.