ve To study the effects of extremely low frequency electromagnetic fields (ELF EMFs) on lipid peroxidation of myocardium in rats. Methods The activities of superoxide dismutase (SOD) and the contents of malonaldehyde (MDA) of the myocardium tissue of rats under the different conditions such as healthy state, my-ocardiac ischemic state and lead-exposure state before and after ELF EMFs exposure were determined respectively. Results ELF EMFs exposure didn't induce significant changes of SOD activities and MDA contents in myocardium of healthy rats, but caused the SOD activities of myocardium of lead-exposure rats to decrease from (31.24?1.08)U/mg prot before exposure to ELF EMFs to (29.20?1.14) U/mg prot after exposure to ELF EMFs (P

Objective The objective of this study was to compare the differences between Volumetric Modulated Arc Radiotherapy(VMAT)and Fixed Field dynamic Intensity Modulated Radiotherapy(dIMRT)in dose distribution of target and organ at risk and treatment time,and to provide basis for clinical treatment.Methods Ten patients with postoperative of cervical carcinoma were selected,VMAT and seven fields dIMRT plans were designed for each patient in Monaco 5.11 planning system.We compared the differences of dose distribution of target and organ at risk,monitor units and treatment time between VMAT and 7dIMRT.Results The average dose of target for VMAT plan(46.86 Gy)was higher than that of 7dIMRT plan(46.68 Gy)(P<0.05).The percentage of the V10 and V20 of rectum and the V30 of small intestine in VMAT plan was 0.63%,3.34% and 4.14% higher than that in 7dIMRT plan,respectively(P<0.05).The conformal index(CI),homogeneity index(HI)of PTV and the other exposure dose of organ at risk for both plans were no significant differences.The average monitor units and treatment time of VMAT plan were 13.4% and 50.6% than that of 7dIMRT plan,respectively(P<0.05).Conclusion The dose distribution of VMAT plan is better or equal to that of 7dIMRT plan,but the monitor units and treatment time of VMAT plan is decreased significantly,we suggest that VMAT plan should be used for postoperative of cervical carcinoma in clinical.

ObjectiveTo study the dose distribution of the intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) inverse plans with different energy X-ray, to provide a reference of energy options for radiation therapy. MethodsEight cases with different disease were chosen, the plan for each case were finished with 1Arc (360°) VMAT, 9 fields IMRT and 5 fields IMRT.For each plan project, the energy selections were 4 MV, 6 MV, 8 MV and 15 MV. In the evaluation,homogeneity index ( HI), conformity index ( CI ) and external volume index ( EVI ) of target, the average dose ( Dmean) and 2％ volume in dose volume histogram ( D2 ) of serial organs at risk ( OARs), the average dose ( Dmean ) and a dose level volume ( Vx ) of parallel OARs were chosen and compared . Results Statistical analysis showed that: For the target, the result of HI were F=0. 13,0. 51,0. 09, P=0. 939,0.679,0.965,CI were F=0. 13,0.51,0.09,P=0.939,0.679,0.965, EVI were F=0. 15,0.31,0. 15,P =0. 930,0. 818,0. 931, respectively ; For the OARs of each patient, F ＜ 0. 20, P ＞ 0. 05. All results indicated there was little difference in option of energy for the same field p8roject. ConclusionsThe results indicate that the middle and low energy X-ray (6 MV or 8 MV) can satisfy the needs of IMRT and VMAT radiotherapy. Compared with middle and low energy, the high energy X-ray (15 MV ) showed little advantage in dose distribution.

Objective To describe the chnical, neuroimagine, pathological and genetic features in a case with mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes (MELAS)/Leigh overlap syndrome.Methods The ease was a 22-year-old woman with recurrent headache, loss of visual acuity and general seizures over 11 years.MRI demonstrated symmetrical high T2-weighted signals in occipital and parietal lobes, in the late stage of the disease, the above imagine changes on MRJ were also shown in the bilateral basal ganglion and brainstem.She died of status epilepticus at age of 22.Brain autopsy and mitochondrial DNA (mtDNA) analysis were performed in the patient.Results The main neuropathological findings were muhifocal and lamilar spongiform in the cortex of the whole brain, the basal ganglion and middle brain.Gliosis, macrophagie reaction and capillary endothelial proliferation were observed in these areas.All 6 layers of the cortex and subcortical white matter in occipital and parietal lobes were severely affected.GI3513A mutation was found in the gene of mitochondria encoded NADH dehydrogenase subunit 5 (MTNDS).Conclusions MELAS/Leigh overlap syndrome presents the symptoms predominantly affecting the cerebral cortex.Neuroimagines suggested that the lesion initially involves the cerebral cortex and in the late stage implicates the basal ganglion and the brainstem, possibly caused by pathological changes of spongiform with capillary proliferation in these areas.

Objective To investigate the effect of video -assisted thoracoscopic surgery (VATS)and conventional thoracotomy in treatment of thoracic esophagus cancer,to provide the reference for clinical.Methods 90 cases of thoracic esophageal cancer in our hospital from January 2012 to January 2015 were chosen as the research subjects.They were randomly divided into observation group(application of VATS treatment)and the control group (application of traditional open chest surgery).The quantity difference,chest drainage,hospitalization time,complica-tions,recovery conditions and other indicators of bleeding were compared in the two groups.Results The operation time of the observation group[(267.6 ±76.5)min]was shorter than that of the control group[(324.4 ±87.6)min]. The amount of intraoperative bleeding[(235.3 ±79.5)mL],drainage volume[(327.5 ±95.2)mL]of the observation group were less than the control group[(398.2 ±98.3)mL and (752.6 ±156.4)mL].Postoperative hospitalization time[(12.2 ±3.2)d]of the observation group was shorter than the control group[(15.8 ±4.4)d].The differences were statistically significant (t =3.276,8.644,15.575,4.439,all P <0.05).There were no significant differences between two groups in recurrence and metastasis rate,mortality rate and total survival rate (χ2 =0.123,0.212, 0.212,all P >0.05).The complication rate of the observation group was lower than that of the control group,the difference was statistically significant (χ2 =4.865,P <0.05).Conclusion In the treatment of thoracic esophageal carcinoma,VATS and conventional thoracotomy surgery has good effect,and VATS has small injury,less complication.

Objective To evaluate the feasibility of using comprehensive geriatric assessment (CGA) in estimating if standard dose treatment is fit for the elderly patients with diffuse large B cell lymphoma.Methods.Comprehensive geriatric assessments including three assessments of activity of daily living,instrumental activity of daily living and comorbidity scoring according to Cumulative Illness Rating Score for Geriatrics were adopted to assess if standard dose treatment is fit for the elderly patients in our prospective study.Thirty seven patients with diffuse large B cell lymphoma,aged ＞70 years were enrolled in the study,and grouped into fit,unfit and frail groups according to comprehensive geriatric assessment scoring and their age.The treatment protocolswere not determined by comprehensive geriatric assessment scores,but by clinical judgments made by clinicians based on their clinical experience and disease features.The clinically effective response and overall survival (OS) were analyzed in the three groups.Results According to CGA scores,patients were grouped into fit [21 cases (56.8％)],unfit [7 (18.9％)] and frail [9 (24.3％)].37 cases received 213 courses of treatment at average 5.76 courses per case.The overall response (complete / partial remission) rates were [85.7％(18/21) vs.28.6％ (2/7) vs.44.4％ (4/9),x2=9.69,P=0.008] and median survival times were (44 months vs.10 months vs.9 months;x2 =7.03,P=0.03) among fit,unfit and frail groups with statistically significant differences.Total effective rate (achieving all clinical targets) in fit group of 21 cases were 100 ％ (12/12)with receiving standard dose therapy,and 66.7％ of(6/9)with low dose therapy(P=0.06).Overall response rate(total/partial remission) [85.7％(18/21) vs.28.6％(2/7) vs.44.4％(4/9),x2=9.69,P=0.008] and median survival (44 months vs.10 months vs.9 months;x2 =7.03,P=0.03) amongfit,unfit and frail groups.In fit group,the two-year overall survival was higher in patients receiving standard dose treatment than receivingpalliativetreatment,with statistical significance [83.3 ％ (10/12) vs.33.3 ％ (3/9),P =0.032],without significant hematologic toxicity observed between the subgroups.Conclusions Comprehensive geriatric assessment can identify if elderly patients diffuse large B cell lymphoma can acquire a satisfactory curative effect from a standard dose treatment ofimmunochemotherapy.

Objective To explore the key points of observing and nursing for patients with acute aortic dissection during the different stages postoperatively.Methods The nursing methods by stages were performed on 25 patients with acute aortic dissection.The stages included early stage(1 to 2 days after the operation), intermediate stage(3 to 14 days after the operation) and advanced stage(14 days after the operation and later).The key points of each stage were different.In the early stage,it needs to closely observe the circulation,the amount of blooding,the respiration system,the nerve system,and the occurrence of complications;and it also needs to do the syndrome-based nursing well,including calming,dropping blood pressure,blood transfusion,suction of phlegm and et al.In the intermediate stage,it needs to guide the daily life of the patients,including taking diet and drinking,activities,excretion and et al．In the advanced stage,it needs to do directions of discharging from the hospital and to prevent the recrudescence of aortic dissection. Results A total of 25 patients were improved in term of their symptoms or cured by our nursing care.The diagnosis was timely and the operation Was suitable.The observation and nursing by stages after the operation were reasonable.All the patients were discharged from the hospital after being healed,no death and no occurrence of serious complications.Conclusions It is helpful to improve the restoration of patients with acute aortic dissection by observing and nursing care by stages,which will play an important role in promoting the smooth healing of the patients and preventing the accidents and the reoccurrence of aortic dissection.

The peeled stem of Syringa pinnatifolia is a Mongolia folk medicine, mainly distributed in Helan mountain, inner Mongolia and Ningxia provinces of China. It has been used for the treatment of cardiopalmus, angina pectoris, and cardiopulmonary diseases for a long history. Contemporary research revealed the presence of major lignans, sesquitepenes, and essential oils, and showed myocardial ischemia related diseases. This review summarizes the plant origins, taxonomic disputes, phytochemical and pharmacological research progress, hopefully to provide reference for full medicinal utilization, clarification of biological effective substance, and drug development.
Animals ; Drug Therapy ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Medicine, Mongolian Traditional ; Molecular Structure ; Syringa ; chemistry

Aim To investigate the effect of hypercholesterolemia on L-type Ca2+(ICa-L) current and intracellular calcium concentration ([Ca2+]i) in single ventricular myocytes of hypercholesterolemic rats.Methods 12 male wistar rats were randomly divided into two dietary groups:a group fed a normal diet(n=6)and a group fed high-cholesterol diet(n=6) for 4 weeks,respectively. The level of serum lipid was examined.Zymolytic method was used to isolate single ventricular myocytes from hypercholesterolemic and normal rats,which were loaded with Ca2+-sensitive fluorescent indicator Fluo-3/AM.[Ca2+]i represented by fluorescent intensity(FI)was measured by laser scanning confocal microscope.Whole cell patch clamp technique was used to record ICa-L.Results There was no significant influence exhibited on TG level.However, the serum total cholesterol(TC)level of hypercholesterolemic rats was much higher than that of model control group; at the test potential of 0 mV, ICa-L decreased from(-8.56?1.29)pA/pF(Control)to(-5.24?0.90) pA/pF(HC)(n=6 in each group,P

Objective To study the level of serum lipids and body-fat content of high-fat diet induced pbesity rats(DIO).explore the relationship between intracellular caleium and ventrieufar arrhythmia.Methods Sixty male Sprague-Dawley(SD)rats were divided into control group(15)and experiment group(45),high-fat diet was administrated for 12 weeks to established obesity model,15 rats were selected into obesity group according to their body weight gain.The standard 2-lead electrocardiograph was used to detect the incidence and scores of arrhythmia induced by barium chloride(BaCl2,0.1 mg/kg)for 1 hour on every 8 rats from different groups respectively.Body-fat content.the level of serum total cholesterol(TC),triglyceride(TG),low density lipopmtein cholesterol (LDL-C) and high density lipopmtein cholesterol (HDL-C)were measured.The epididymal(EP),retroperitoneal (RE) and mesenteric(ME)white adipose pads was measured to obtain the body fat content.Single ventricular myrocytes of rats were isolated by enzymatic dissociation.The confocal laser scanning microscope was used to record basic intraceUular calcium level([Ca2+]i).Results The body-fat content in obesity group[(7.71±0.74)%] was significantly higher than control group[(4.69±0.37)%](t＝3.650,P＜0.05).The level of serum TC,TGand LDL-C were significantly higher(t＝3.801,2.778,3.536.P＜0.05) in obesity group[(1.26±0.04),(0.58±0.10),(0.51±0.04)mmol/L]than those in control group[(0.92±0.08),(0.29+0.03),(0.31±0.04) mmol/L].The level of serum HDL-C wa8 decreased gradually from control group[(0.53±0.05)mmol/L] toobesity group[(0.52±0.02)mmol/L],but there waft no significant difference between them(t＝0.186,P＞0.05).The incidence of arrhythmia induced by BaCl2(0.1 mg/kg)in obesity group was significantly higher than controlgroup(X2＝5.333,P＜0.05),and the scores of arrhythmla was increased in obesity group(2.5±0.6)too.The fluorescence intensity standing for[Ca2+]i was increased significantly(t＝2.409,P＜0.05)from obesity group(247.96±20.03)to control group (174.25±23.13).Conclusion As the free cytosolic calcium begin to accumulate,the arrhythmia morbidity is increased in obesity rats.