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.

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

Background and purpose: MicroRNAs (miRNAs) play an important role in tumor biological behavior. miRNAs are down-regulated or up-regulated in various cancer types, triggering abnormal cell differentiation, proliferation and apoptosis. This study was designed to investigate the expression and clinical signiifcance of miR-187*in colorectal cancer (CRC), and further to investigate its roles in promoting cell apoptosis. Methods:The expressions of miR-187* in 40 CRC cases were examined by real-time quantitative reverse transcription-PCR (qRT-PCR). The relationship between miR-187*expression and clinical features of CRC was analyzed. HCT116 cells were transfected with a miR-187*mimic and the apoptosis of the transfected cells were examined by lfow cytometry (FCM). Results:The expression of miR-187*was down-regulated in CRC tissues 0.165 (0.106, 0.428) compared with those in normal tissues 0.334 (0.211, 0.712) (P<0.05), especially in mucinous carcinoma and older age CRC (P<0.05). Transfection of HCT116 cells with a miR-187*mimic up-regulated the expression of miR-187*and increased cell early apoptosis (P<0.05). Conclusion: The expression level of miR-187* was lower in CRC. miR-187* expression correlates with histological type and age. Transfection of HCT116 cells with a miR-187*mimic accelerates apoptosis of tumor cells, suggesting that miR-187*is a potent tumor suppressor.

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.

Objective To evaluate the level of MMP-2 and COX-2 Protein in bladder transitional cell carcinoma tissue and explore their relationships. Methods A total of 42 patients with bladder transitional cell carcinoma, including Ta-T1 (n=18), T2-T4 (n=24), G1(n=12), G2 (n=19), G3 (n=11), metastasis (n=26) and without metastasis (n=16), were enrolled in the study. Eight normal bladder tissues were selected as control group. Western blotting was performed todetect the mRNA level of MMP-2 and COX-2. Results The relative COX-2 protein level of Ta-T1 (0.729±0.458), T2-T4 (1.248±0.425), G1 (0.61±0.486), G2 (1.055±0.406), G3 (1.422±0.341) were all higher than that of the control group significantly (0.31±0.149, t = 3.56, 4.13; F = 5.98, P ＜0.05). The relative MMP-2 protein level of Ta-T1 (0.844±0.345), T2-T4 (1.458±0.463), G1 (0.971 ±0.370), G2(1.445±0.378), G3 (1.755±0.387) were all higher than that of the control group (0.460±0.213, t = 3.91, 4.83;F = 6.35, P ＜0.05). The COX-2 and MMP-2 protein level in tumor tissues with and without metastasis were 1.246±0.426 vs 0.668±0.421, 1.430±0.461 vs 0.814±0.341, t = 5.89, 6.27, P ＜0.01, respectively. The level of COX-2 protein was positively correlated with MMP-2 positively (r =0.48, P ＜0.01). Conclusion MMP-2 and COX-2 protein are highly expressed in bladder transitional cell carcinoma tissue and their expression is positively correlated with the malignant degree. MMP-2 and COX-2 might play a synergetic role in the carcinogenesis of bladder transitional cell carcinoma.

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.

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.

Objective To evaluate the effect of ulinastatin pretreatment on endoplasmic reticulum stress during myocardial injury in the patients undergoing mitral valve replacement (MVR) with cardiopulmonary bypass (CPB).Methods One hundred patients of both sexes,aged 35-64 yr,weighing 40-80 kg,of American Society of Anesthesiologists physical status Ⅱ or Ⅲ (New York Heart Association Ⅱ or Ⅲ),scheduled for elective MVR with CPB,were divided into ulinastatin pretreatment group (UP group,n=50) and normal saline control group (NS group,n =50) using a random number table.Ulinastatin 0.5× 104 U/kg was intravenously infused over 1 h before skin incision,and administration was repeated every 4 h until the end of operation in group UP,while the equal volume of normal saline was given instead in group NS.Immediately after opening the right atrium (T0),at 30 min after aortic clamping (T1) and while suturing the right atrium (T2),blood samples were collected from the radial artery for measurement of the concentrations of plasma creatine kinase-MB and cardiac troponin T by enzyme-linked immunosorbent assay.Right auricle specimens were obtained after blood sampling at each time point for determination of the expression of glucose-regulated protein 78,CCAAT/enhancer-binding protein homologous protein and c-Jun N-terminal kinase protein and mRNA (by real-time polymerase chain reaction and Western blot,respectively) and apoptosis in cardiomyocytes (by TUNEL).The apoptosis rate was calculated.Results Compared with group NS,the plasma concentrations of creatine kinase-MB and cardiac troponin T at T1 and T2 and apoptosis rate at T2 were significantly decreased,and the expression of glucose-regulated protein 78,CCAAT/enhancer-binding protein homologous protein and c-Jun N-terminal kinase protein and mRNA was down-regulated at T1 and T2 in group UP (P＜0.05).Conclusion The mechanism by which ulinastatin pretreatment inhibits apoptosis in cardiomyocytes and attenuates myocardial injury is related to decrease in endoplasmic reticulum stress in the patients undergoing MVR with CPB.