Many studies, both retrospective and prospective, have shown that there is a circadian variation in acute cardiovascular events with a peak during the morning and a trough during the night since the mid 1980s. In addition to the morning peak, a secondary less prominent peak has been observed in the late afternoon in many studies. This circadian variation may well be at least partly linked to the known physiological circadian rhythms. Because the duration of the therapeutic effect of many drugs taken at the conventional time will have reached subtherapeutic levels at the time of waking and commencing activity the following morning, timing of medication is discussed to improve the protection of the patients with cardiovascular disease in the morning waking hours.

OBJECTIVE To investigate the frozen section and surgical margin predicting the prognosis of laryngeal carcinoma after partial laryngectomy and decides the circumscription of surgical margin because of the balance between the function of the larynx and the recurrence rate of cancer.METHODS 77 cases of laryngocarcinoma were reviewed in this retrospective study.All of the laryngocarcinoma patients were treated in our hospital during 1996.1～2001.12 frozen section, surgical margin, and pathological section were compared to the recurrence rate of cancer and the survival rate of patients.RESULTS To those Partial laryngectomy whose surgical margin are larger than 0.5 cm, whether carrying out the frozen section is not significant.But to those Partial laryngectomy whose surgical margin are smaller than 0.5 cm, we should carry out the surgical margin to decrease the positive rate of the pathological section.Recurrent rate of the negative group is lower than the positive group(P

Objective To discuss the relationship between IL-13R?2 and the tumorigenesis and progression of gliomas. Methods Expression level of IL-13R?2 mRNA was studied by Reverse Transcription-Polymerase Chain Reaction(RT-PCR) in 20 cases of glioma and 5 cases of normal brain tissue. Results There was no expression of IL-13R?2 mRNA in all cases of normal brain tissue, wherea 13 of 20 gliomas expressed IL-13R?2.There were specially significant difference between them(P0.05) between low grade gliomas and high grade gliomas, there was greatly significant difference(P

Objective To investigate the diagnosis and treatment of the posterior fossa solid hemangioblastomas (PFSHs).Methods The data of 23 patients with PFSHs verified by surgery and pathology were analyzed retrospectively.Results Nineteen cases were diagnosed with PFSHs before surgery.Total tumor removal was achieved in 22 patients.No case died of operation.A follow-up time was 0.33 -9.00 (2.96 ±2.73) years,20 patients returned to work,1 patient had self-handling living,and 2 patients died.Conclusions MRI and digital subtraction angiography are major preoperatively diagnostic modalities for PFSHs.PFSHs is still a kind of challenging neoplasms.Applicating special microsurgical technique and improving the operative manipulation can improve the surgical efficacy.

Objective To investigate the efficacy of sling-exercise therapy on cervicogenic headache. Methods 60 patients with cervicogenic headache were divided into 2 groups with 30 patients each. Group I received paravertebral block of C2 once a week for 4 weeks, and Group II received sling-exercise therapy 3 times a week in addition. The Visual Analogue Score (VAS), frequency of pain (per month) before and 1, 3, 6 months after treatment were recorded, and the incidence of improvement was observed. Results In group I, VAS significantly improved 1 and 3 months after treatment (P<0.001), while it lasted 6 months in group II (P<0.001). The VAS improved more in group II 3, 6 months after treatment (P<0.001). It was similar in pain frequency. The incidence of improvement was 33.3% (10/30) and 73.3% (22/30) in group I and group II, respectively (P<0.01). Conclusion Sling-exercise therapy may improve the efficacy of paravertebral block on cervicogenic headache, especially for the long-term.

BACKGROUND: Blood platelet is active commonly appeared in both acute and recovery stages in ischemic cerebral apoplexy. Cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) are closely correlated with the blood platelet function.OBJECTIVE: To observe the therapeutic effects of compound danshen drop on clinical prevention and treatment of transient cerebral ischemic attack (TIA) and the influence on serum cAMP and cGMP.DESIGN: Randomized control experiment.SETTING: Department of Neurology of Binzhou Medical College affiliatedHospitalPARTICIPANTS: Totally 180 TIA patients participated in the experiment in volunteer in the clinic of Neurological Department of Affiliated Hospital of Binzhou Medical College from September 2000 to April 2001. Based on randomized number scale, 3 groups were divided according to dosages of compound danshen drop. In 10 drops/d group, there were 60 cases, of which 35 cases were male and 25 cases female, aged varied from 50 to 70 years, averagely (54.3±7.2) years old. In 20 drops/d group, there were 60 cases, of which, 32 cases were male and 28 cases female, aged varied from 49 to 62 years, averagely (55.7±5.1) years old. In 30 drops/d group, there were 60 cases, of which, 33 cases were male and 27 cases female, aged varied from 52 to 69 years, averagely (54.9±5.5) years old.METHODS: In 10 drops/d group, the drug was given once per day, 10drops each time. In 20 drops/d group, the drug was given twice per day,10 drops each time. In 30 drops/d group, the drug was given three times per day, 10 drops each time. Four weeks after medication, 3 mL blood was collected from each patient in the morning. With radioimmunoassay, the contents of cAMP and cGMP in serum were determined. Each case was tions, gem bleeding, epistaxis, subcutaneous bleeding, mouth numbness,headache, dizziness, etc.tack: In 10 drops/d group, there were 1 case in internal carotid arterial system, 2 cases in vertebral arterial system, 1 case of cerebral infarction and 2 cases of myocardial infarction. In 20 drops/d group, it was 2, 2 and 1 cases successively and in 30 drops/d group, it was 1, 2, 1 cases succesgroup: There were 1, 2 and 4 cases of harmful accident and side effects in three groups successively, of which, peripheral numbness of mouth 1 case in 10 drops/d group, 1 case of either peripheral numbness of mouth or headache in 20 drops/d group, gastrointestinal reaction 1 case, peripheral numbness of mouth 2 cases and dizziness 1 case in 30 drops/d group.There was no gem bleeding, epistaxis and subcutaneous bleeding, and no patient was withdrawn the treatment due to above-mentioned side effects.With comparison among groups, significant difference was not indicated The contents of cAMP were (21.22±3.94), (22.5±3.67), (23.1±7.7) ng/Land cGMP were (3.67±1.18), (4.74±2.12), (4.6±0.7) ng/L successively in three groups (P ＞ 0.05).CONCLUSION: During second-grade prevention of TIA, compound danshen drop presents definite therapeutic effects, which is basically same in comparison of dosages. Simultaneously, no remarkable side effects appear.

Objective To investigate the effects of aggressive dosing of atorvastatin on the expression of SOCS1 in CD4 + Tlymphocytes from patients with unstable angina pectoris during peri-operative period of PCI.Methods A cohort of 50 patients with unstable angina pectoris were randomized (random number) to give pretreatment with either an aggressive dose (80 mg/d,n =25) or a routine dose (20 mg/d,n =25)of atorvastatin.Circulating CD4 +T cells were subsequently obtained prior to PCI,and also 18 h to 24 hours after PCI,using a magnetic cell sorting system (MACS).Fluorescence-based quantitative real-time polymerase chain reaction (qRT-PCR) was used to measure expressions of SOCSI mRNA in the isolated CD4 + Tlymphocytes,and western blot analysis was used to detect levels of SOCS1 protein.Serum levels of IFN-γwere quantified using enzyme-linked immunosorbent assays (ELISAs).Results Compared with routine dose group,the expressions of SOCS1 mRNA and protein levels were dramatically increased and those were higher in aggressive dose group following PCI (P ＜ 0.05).In contrast,serum levels of IFN-γsignificantly increased following PCI in both groups,but it was higher in routine dose group than in aggressive dose group (P ＜ 0.05).Conclusions Treatment with aggressive dosing of atorvastatin reduced the post-PCI myocardial inflammatory response in patients with unstable angina pectoris,possibly modulating by up-regulating SOCS1 expression in CD4 + Tlymphocytes.

Objective To investigate the effects of large dose of atorvastatin on the expression of Sprouty-1 in CD4 + T lymphocytes from unstable angina patients during perioperative period of PCI.Methods A total of 52 unstable angina patients enrolled were divided randomly (random number) into large-dose atorvastatin (80 mg/d,n =26) pretreated group and moderate-dose atorvastatin (20 mg/d,n =26) pretreated group.Circulating CD4 + T cells were obtained by magnetic cell sorting system (MACS) before PCI and 18-24h after PCI.For detecting the gene expression,the reverse transcription fluorescent quantitative polymerase chain reaction (RT-PCR) was used to measure the expression of Sprouty-1 mRNA in CD4 + T lymphocyte.The level of Sprouty-1 protein was detected with Western blot analysis and IL-2 was quantified by enzyme-linked immunosorbent assay (ELISA).Results ①Compared with large-dose group before PCI,the expression of Sprouty-1 mRNA and Sprouty-1 protein levels were dramatically increased in large-dose group after PCI (P ＜ 0.05).②Compared with moderate-dose group before PCI,the expression of Sprouty-1 mRNA and protein levels were slightly increased in moderate-dose group after PCI,but there was no statistical significance (P ＞ 0.05).③Compared with large-dose group before PCI,the serum level of IL-2 was decreased in large-dose group after PCI (P ＜ 0.05).Whereas the serum level of IL-2 was slightly increased in moderate-dose group after PCI compared to moderate-dose group before PCI,there was still no statistical significance (P ＞ 0.05).Conclusions Large-dose atorvastatin pretreatment reduced post-PCI myocardial inflammation through up-regulating the expression of Sprouty-1 mRNA and level of Sprouty-1 protein in CD4 + T lymphocytes.

Objective To establish a method for determinning quetiapine in human hair by HPLC.Methods A reverse phase HPLC system was performed on Inertsil ODS-C18 column (4.6 mm ×150 mm,5μm)with the mobile phase consisted of 0.01 mol/Lammonioum-methanol(32︰68).The flow rate was 1.0 mL/min,column temperature was 40℃,the detection wavelength was 254 nm.N-hexane was used as extracting solvent.Results The calibration curve was linear in the range of 5-200 ng/mg.for quetiapine.The recovery of extraction >75.0%, the recovery of method was between 95.0% and 105.0%, the intra-day and inter-day precision were all no more than 10.0%.This method met the requirements of biological samples. Conclusion A HPLC method of concentration of quetiapine in human hair is established, which is simple,sensitive,accurate and has a certain value.

Objective:To study the biomechanical basis of swan like memory compressive connector (SMC) for treating fractures and nonunions of humerus. Methods:The study was performed by electrometric, two and three dimensional (3D) photoelasticity techniques. By gauging and multiple time standardization, load strain curve was got, then the dynamic memory force of SMC was calculated. The dynamically compressive force of swan neck compressive part was calculated by 2D photoelasticity. By precision moulding, the epoxy resin 3D photoelasticity humeral model was established, then it was fixated by SMC, meanwhile, an epoxy resin cirque was used to share the continuously memorial compress. The 3D stress distribution of humeral model was got, and 6 space component stress of the inspected node was divided by Leize polarizing microscope. Results:The continuously memory force of SMC was 110.35 N. The longitudinal dynamical compressive memory force was 163.88 N. 3D photoelasticity method showed that the swan neck compressive part of SMC, swan body connecting part of SMC and swan wing holding part of SMC were in consistent with each other, memorably holding bone, 3D fixation style was formed, and overall stress distribution was produced.. Conclusion:The stress field produced by 3D memory fixation of SMC is good for the treatment of fractures and nonunions. Early function exercises are allowed, and the fracture healing is prompted.