5 cm).The survival rates and the diminished rates of tumors in size were analysed comparatively.Results For small hepatocellular carcinoma,the diminished rates of tumor's size were higher in group PEI than that in group TACE and group CST,and higher in group RF than that in group TACE(P0.05).For large hepatocellular carcinoma,the diminished rates of tumor's size were higher in group TACE and group CST than that in group RF(P

AIM and METHODS: The ratio of mitochondrial DNA (mtDNA) deletion was measured to find the relationship between mtDNA deletion and aged learning and memory deficit. The aged rats were divided into two groups, aged learning and memory deficit group and aged learning and memory normal group. The ratio of mtDNA deletion was measured by dilution polymerase chain reaction. RESULTS: There are deleted mtDNA (about 4834 bp) in the cerebral cortex, hippocampus and cerebellum of both young and aged rats. The ratios of deleted mtDNA were similar in the cerebral cortex,hippocampus and cerebellum of young rats (about 0.00018%). The ratio mtDNA of aged learning and memory normal rats had increased by five-fold in the cerebral cortex and hippocampus, or one-fold in the cerebellum over young rats. The ratio of aged learning and memory dificit rats had increased by one-fold in the cerebral cortex or 0.8-fold in the hippocampus or two-fold in the cerebellum over aged learning and memory normal rats.CONCLUSIONS: There was really the increase of mtDNA in aging rat brain. And this increase was double in amount in aged learning and memory deficit rats compared to the normal learning and memory aged rats. It is suggested that the mtDNA deletions in the brain regions associated with learning and memory may be contributed to the cellular and molecular mechanism of learning and memory deicit with aged rats.

Objective To analyze risk factors of elasticity of common femoral artery(CFA)and popliteal artery(PoA)in type 2 diabetic(T2DM)patients by echo-tracking(ET)technique.Methods Thirty healthy subjects(control group)and sixty-eight T2DM patients were enrolled in this study.The stiffness β of common femoral and popliteal artery were automatically measured by ET technique.The differences in ordinary and biochemical indices between control group and T2DM group were compared and analyzed by the method of linear regression and multiple linear regression.Results In both control and the T2DM group,β of CFA and PoA were significantly correlated with age,systolic blood pressure.TC, LDL,ApoB and LPa of CFA were also significantly correlation with β in T2DM group(P<0.05).Conclasions The stiffness of CFA and PoA in patients with T2DM increased followed by the increase of age, systolic blood pressure,TC,VLDL,ApoB and LPa.

Objective To investigate the elasticity and hemodynamics of femoral artery in patients with type 2 diabetes mellitus (T2DM).Methods Subjects recruited in this study were divided into three groups,healthy control ( n =30),T2DM patients with femoral arterial intima-media thickness(IMT) ＜1.0mm ( n =32) and IMT≥1.0 mm( n =22).The IMT and diameter were measured by two-dimensional ultrasound.The blood velocity in early and late systolic stages and early diastolic reverse blood velocity,resistance index and pulsatile index were measured by pulse Doppler.The stiffness parameter,pressurestrain elasticity modulus,arterial compliance,argumentation index and one-point pulse wave velocity were measured by echo-tracking technique.Results The early diastolic reverse blood velocity,resistance index,pulsatile index,stiffness parameter,pressure-strain elasticity modulus and one-point pulse wave velocity were significantly elevated in T2DM patients compared with healthy control (P ＜ 0.05),the arterial compliance was significantly lower in T2DM subjects.Stiffness parameter,pressure-strain elasticity modulus and one-point pulse wave velocity were more pronounced in the patients with IMT≥1.0 mm than those with IMT ＜ 1.0 mm ( P ＜0.05).Conclusions There is atherosclerosis in femoral arteries in patients with T2DM.A decrease in arterial elasticity occurs prior to the morphological changes in vascular atherosclerosis,the arterial elasticity abnormality causes insufficient blood supply to peripheral tissues.

OBJECTIVE: To observe the promoting effect of arnebia root oils on expression of basic fibroblast growth factor (bFGF) in skin wound of rabbits and the histomorphological changes in the wound surface, and to discuss its mechanism. METHODS: Bilateral round skin wounds were made on the back of 15 rabbits. The three wounds on one side of the back of each rabbit were treated with arnebia root oils, while the three wounds on the other side were treated with vaseline in order to promote the wound healing. The histomorphology and ultrastructure under electron microscopy of the wounds, and the rate of wound healing were examined at different time. Western blotting assay was used to detect the expression of bFGF in the wound surface. RESULTS: The healing rate of the arnebia root oils-treated wounds was evidently higher than that of the vaseline-treated wounds (P<0.05). The quantities of fibroblast, collagen and capillary in the arnebia root oils-treated wounds were much more than those in the vaseline-treated wounds, and the expression of endogenous bFGF in the arnebia root oils-treated wounds was enhanced obviously as compared with that in the vaseline-treated wounds in different period of wound healing. There existed a parallel correlation between the expression level of bFGF and the rate of wound healing. CONCLUSION: The promoting effect of arnebia root oils on wound healing may be related to increasing the expression level of basic fibroblast growth factor in the skin wound.

Objective To compare the safety and efficacy of carotid artery stenting (CAS) and carotid endarterectomy(CEA) for the treatment of carotid stenosis. Methods The electronic databases (PubMed, EMbase, Cochrane Central Register of Controlled Trials, CNKI, VIP and Wanfang) were searched in order to retrieve randomized controlled trials (RCTs) about comparing CAS and CEA for the treatment of carotid stenosis. Cochrane collaboration's RevMan 5.0.24 were used for analyzing data. Results Twelve RCTs totalling 6903 patients (3460 patients were randomized to CAS and 3443 randomized to CEA) with symptomatic or asymptomatic stenosis were included in the meta-analysis. There were significantly higher 30-day relative risks after CAS than after CEA for death or any stroke [RR=1.64, 95%CI (1.33-2.03), P＜0.00001] and for stroke [RR=1.70, 95%CI (1.34-2.14), P＜0.00001]. The relative risks of myocardial infarction [RR=0.62, 95%CI (0.39-0.97), P=0.04] and cranial neuropathy [RR=0.07, 95%CI (0.03-0.16), P＜0.00001] was significantly less after CAS than after CEA. The relative risks of death [RR=1.27, 95%CI (0.82-1.96), P=0.29] or disabling stroke within 30 days [RR=1.33, 95%CI (0.78-2.28), P=0.29] and any stroke or death at 1 year after the procedures [RR=0.96, 95%CI (0.63-1.46), P=0.84] did not differ significantly between CAS and CEA operation. Conclusions CEA remains the first choice for treatment of carotid stenosis for patients with low surgery risk. For patients with high surgery risk and unsuitable for surgery, CAS has more advantages. It is reasonable to view CAS and CEA as complementary rather than competing modes of therapy.

Objectiye To investgate the effects of isoflurane preconditioning on expression of Toll-like receptor 4 (TLR4) and myeloid differentiation factor 88 (MyD88) during focal cerebral ischemia-reperfusion (IR) in rats. Methods Thirty male SD rats weighing 250-300 g were randomly divided into 3 groups ( n = 10 each):sham operation group (group S);focal cerebral IR group and isoflurane preconditioning group (group IP). The animals were anesthetized with intraperitoneal pentobarbital 40 mg/kg. In group IR and IP a nylon thread with rounded tip was inserted into right internal jugular vein and threaded cranially until resistance was met. Mid-cerebral artery was occluded (MCAO) for 2 h followed by 24 h reperfusion. In group IP the animals inhaled 2% isoflurane98 % O2 for 1 h once a day for 5 consecutive days at 24 h before MCAO. Neurologic function was assessed and scored and cerebral infarct volume was measured at 24 h of reperfusion. The animals were sacrificed at 24, 48 and 72 h of reperfusion respectively. The right ischemic frontal lobes were removed for determination of TLR4, MyD88and NF-κB expression by Western blot analysis. Results MCAO significantly worsened neurologic function. The neurologic function deficit scores were significantly increased and the TLR4, MyD88 and NF-κB expression were significantly up-regulated in group IR as compared with group S (P ＜ 0.05). Isoflurane preconditioning significantly decreased cerebral infarct volumes and neurologic function deficit scores and down-regulated the expression of TLR4, MyD88 and NF-κB in group IP as compared with group IR ( P ＜ 0.05). Conclusion Isoflurane preconditioning can reduce inflammatory response and focal cerebral IR injury by down-regulating the expression of TLR4and Myd88.

Diagnosis, Differential ; Medicine, Chinese Traditional ; Terminology as Topic ; Yin-Yang

Objective To investigate the general surgeon growth time, and to probe into the factors affecting the surgeon growth. Methods 72 surgeons who worked more than 15 years in the field of general surgery in 12 hospitals of Gansu Province were investigated, focusing on education, resident rotation train-ing, teachers' qualification, refresher training, the frequency of intra-hospital technical exchange, and scale of hospital employed. SPSS 18.0 statistical software was applied to analyze the data. t test was used in com-parison between groups, and multiple groups were compared by using single factor analysis of variance. Results The surgeon growth time was (9.84±1.51) years averagely. In the process of growing up, the growth time of the general surgeons who experienced hospital resident rotated training, refresher training, intra-hos-pital technical exchange was significantly shorter than that of no-related-experienced surgeons. The higher the education, the higher the quality of the teachers and the higher the level of medical institutions, the shorter the doctor's growth time. Conclusion In the same medical institutions, the resident rotated training, the teacher's qualification, higher hospital training, and the frequency of intra-hospital technical exchange have the positive function to the surgeon's general growth, so in making young doctor training plan we should consider the value of the above-mentioned factors.

ObjectiveTo investigate the expression of miR-21 in diffuse large B cell lymphoma (DLBCL)and normal lymph tissues and its potential relevance with clinicopathological characteristics.MethodsThe expression levels of miR-21 in 50 primary DLBCL and 12 normal lymph node tissue specimens were examined by TaqMan real-time polymerase chain reaction.The expression of bcl-2 and p53 was detected by immunohistochemistry staining. ResultsThe expression of miR-21 was significantly higher in tumor tissues than that in normal tissues, in GCB subtypes higher than in non-GCB subtypes. And it was negatively correlated with bcl-2(P=0.020),while positively correlated with p53(P=0.022). Up-regulated miR-21 expression was low in three years of survival rate. ConclusionMiR-21 may indicate a more aggressive phenotype and serve as a molecular prognostic marker in DLBCL. High-expression of miR-21 is a key feature that is correlated with cell proliferation in DLBCL.miR-21 may have some guiding significance in prognosis.bcl-2,p53 is possibly one of the targets of miR-21 in DLBCL.