Objective To evaluate CT diagnostic value in the facet syndrome of lumbar spine.Methods CT fingings in 64 cases with facet syndrom were retrospectively analysed,53 males and 11 females,aged 39～70 years with a mean of 54.5.Results The main abnormalties demonstrated by CT included:(1)Hypertrophy of articular process,osteophyte formation,leading to stenosis in joint,lateral recess,lumbar intervertebral foramen and lumbar spinal canal.(2)Sclerosis of articular aspect,cystic region and defect on boder of the articular aspect.(3)Vacuum phennomenon,asymmetry of the joint and subluxations.Conclusion CT can demonstrate anatomic structure and pathologic change of the articular joints clearly,and provide reliable images for diagnosis of facet sydrome.

Objective To investigate the association between the polymorphisms of brain-derived neurotrophic factor(BDNF) gene C270T and sporadic Alzheimer's disease(SAD) in Han Chinese.Methods The polymerase chain reaction-restriction fragment length polymorphism(PCR-RELP) was used to detect BDNF gene C270T genotype and allele frequencies in 55 SAD patients and 80 age-and sex-matched healthy people(as normal control group).Results The frequencies distribution of BDNF gene C270T genotype and allele in the normal control group were suit to Hardy-Weinberg equilibrium(?2=0.167,P=0.682).The frequencies distribution of genotype and allele in the SAD group[C/C:52(94.5%),C/T:3(5.5%) and C:97.27%,T:2.73%]and normal control group[C/C:74(92.5%),C/T:6(7.5%) and C:96.25%,T:3.75%] were no statistical differences.Conclusion There is no association between the polymorphisms of BDNF gene C270T and SAD in Han Chinese.

OBJECTIVE: To explore whether there are beta-amyloid protein (Abeta) binding elements in heart-beneficial recipe (HBR, a compound traditional Chinese herbal medicine), which can ameliorate the cytotoxicity of Abeta. METHODS: The extract of HBR and Abeta(1-40) were co-precipitated, and the Abeta(1-40) in pellets was detected by immunoblotting. Affi-gel-Abeta(1-40) was constructed, and Affi-gel-Abeta(1-40) affinity elements from the extract of HBR were analyzed by high-performance liquid chromatography (HPLC). The assay of lactic dehydrogenase (LDH) release from the primary cultured rat cortex neurons was used to evaluate the cytotoxicity of Abeta(1-42), and the protection effects of the HBR serum and the Affi-gel-Abeta(1-40) treated HBR serum. RESULTS: Immunoblotting examination showed Abeta(1-40) could be co-precipitated with components of HBR following co-incubation, and the amount of Abeta(1-40) within pellets decreased when the HBR extract was diluted. Abeta(1-40) affinity elements from the extract of HBR, eluted from Affi-gel-Abeta(1-40) by glycine solution (pH=2.5), could be detected by HPLC-fluorescent detector system. The analysis of LDH release showed that exposure of neurons to 5 micromol/L Abeta(1-42) for 48 h caused a significant increase of LDH release in either a serum free or 10% serum contained culture condition (P<0.01). The rat HBR serum was able to suppress Abeta(1-42) induced LDH release (P<0.05), whereas Affi-gel-Abeta(1-40) treated HBR serum still maintained the ability to attenuate Abeta(1-42) induced LDH release although the effect was somewhat decreased compared with Affi-gel treated HBR serum. CONCLUSION: There are Abeta affinity components in HBR, which could not increase the Abeta cytotoxicity, but might be able to inhibit the cytotoxicity of Abeta. The results implied that the exploration of Abeta affinity elements from Chinese medicinal recipe which is effective for Alzheimer disease, might be an important direction in Alzheimer disease therapeutic research area.

Objective To study the effects of butylphthalide (NBP) on memory and apoptosis related protein as well as neuronal pathology in hippocampus of vascular dementia (VD) rats. Methods VD model was generated by the permanent occlusion of bilateral common carotid arteries in SD rats to produce the forebran ischemia. Male SD rats were randomly allocated into sham-operation group, VD model group, NBP treatment group and nimodipine treatment group. The function of memory was tested by the Morris water maze. The neuronal pathological changes and the expression of Bcl-2 and Bax proteins in the hippocampus were observed with hematoxylin-eosin (HE) staining and immunohistochemical staining, respectively. Results The impaired memory of VD rats was proved by the lengthened mean escape latency [(78.79±21.93)vs.(16.96±7.44),P＜0.05] and the neuron in hippocampus was severely damaged. The decveased ratio of Bcl-2/Bax resulted from the overexpression of Bax proteins in VD model group versus the sham-operation group [(43.00±6.72)vs.(6.00±1.29),P＜0.05]. The treatment of NBP notably improved the memory function of VD rats and reduced the hippocampus pathological injury (P＜0.05). The expression of Bcl-2 protein raised [(33.14±8.05)vs.(21.81±4.97),P＜0.05] along with reduced expression of Bax protein [(32.93±4.99)vs.(43.00±6.72),P＜0.05] after NBP treatment. However, there was no significant difference in the treatment effects between nimodipine and NBP group (P＞0.05). Conclusions NBP treatment could improve memory of VD rats and reduce the hippocampus pathological lesion by inhibiting the apoptosis related protein.

ObjectiveTo investigate the relatioaship between the changes in perioperative plasma vasopressin (VP) and angiotensin Ⅱ ( Ang Ⅱ ) concentrations and outcome in patients undergoing off-pump coronary attery bypass grafting (OPCABG).MethodsFifty ASA Ⅰ -Ⅲ patients (NYHA Ⅰ -Ⅲ ) of both sexes,aged 45-79yr,undergoing OPCABG,were enrolled in this study.Blood samples were collected before induction of anesthesia (T1,baseline),before skin incision (T2),at 10 and 30 min after skin incision (T3,T4 ),10 min after protamine injection (T5),end of operation (T6 ) and 24 h after operation (T7).Based on the intraoperative plasma VP concentrations,the patients were divided into high level group ( n =26) and low level group ( n =24) by hierarchical clustering analysis.The risk factors for perioperative lower plasma VP concentration were determined by logistic regression analysis.ResultsPlasma VP concentrations were significantly lower,while plasma Ang Ⅱ concentrations were significantly higher at T2-6 in the low level group than in the high level group.The incidence of vasoplegia (high cardiac output and low peripheral resistance) was significantly higher,the intra- and post-operative use of vasodilator was less,the tracheal extubation time,ICU stay and post-operative hospital stay were longer,and preoperative left ventricular ejection fraction (LVEF) was lower in low level group than in high level group.Logistic regression analysis showed that preoperative low LVEF was a risk factor for intraoperative low plasma VP concentration and OR was 1.122.Conclusion Plasma VP and Ang Ⅱ concentrations demonstrate an opposite trend of change during OPCABG.The incidence of vasoplegic syndrome is significantly higher and the outcome poor in low plasma VP group.Preoperative low LVEF is a risk factor for development of low plasma VP during OPCABG.

Objective To investigate early and differential diagnosis of Alzheimer disease and vascular dementia (VD)using FDG-PET scan. Methods Clinical data was collected from AD,VD and normal control(NC). 18F-2-fluo-ro-deoxy-D-glucose(18F-FDG)PET scan was conducted to detect the cerebral FDG metabolism. The average standard uptake value (SUV) of cerebral regions was expressed as semiquantitative index relative to ipsilateral cerebellum. Re-sults There were no differences in age and the mean total scores of the mini mental status examination (MMSE) between patients with VD and those with AD.The AD group showed that the SUV was significantly decreased in the right frontal, parietal,temporal lobe,hippocampus,temporo-parietal junction,and bilateral posterior cingulate cortex compared to the VD and in the bilateral posterior cingulate cortex,temporo-parietal junction,frontal and temporal lobe comparing to the NC(P≤0.01). SUV was significantly increased in the right parietal,posterior cingulate cortex and hippocampus whereas was significantly decreased in the left frontal lobe,temporo-parietal junction and thalamus in the VD compared with NC group(P≤0.01). Conclusion AD patients have typical features of 18F-FDG PET which may be helpful for the diagnosis of AD in the early stage.

BACKGROUND:Degradable polymer materials initiate the degradation process immediately after implantation. How to regulate the degradation of these materials is rarely reported at present. OBJECTIVE:To study the effect of ultrasonic wave on control ing the degradation of polymer materials. METHODS:The sample is made ofε-caprolactone/L-lactide copolymer, and its core was coated with low density polyethylene on the surface with the fol owing four different methods. (1) The core surface was firstly covered with CaCl 2 powder, and then coated with polyethylene. (2) The core was firstly coated with polyethylene and coarsened for 3 hours. (3) The core surface was firstly covered with CaCl 2 powder, and then coated with polyethylene, and coarsened for 3 hours. (4) The core was directly coated with polyethylene. The four kinds of specimens obtained were embedded in pork for ultrasonic bombardment experiment in vitro. RESULTS AND CONCLUSION:In the specimens prepared with methods 1 and 4, the lyophobic layer could protect core materials before ultrasonic treatment, and no absorption peak was found at 631 nm. After ultrasonic treatment, the lyophobic layer was destroyed, toluidine blue dye was released, leading to change the color of immersion solution and increase the absorption peak at 631 nm. In the specimens prepared with methods 2 and 3,the lyophobic layer cannot exhibit the protection effects, the absorption peak was found at 631 nm. Under electron microscope, the appearance of the specimens in four groups was changed obviously. It is feasible to control the starting of the degradation by coating the degradable copolymer with LDPE and using ultrasonic as a trigger.

Objective To evaluate diagnostic values of multi-tumor markers protein biochip detective system for lung cancer. Methods Patients with lung cancer group(78 cases),benign pulmonary diseases group (118 cases) and control group (68 cases) were enrolled.Twelve tumor markers in serum (AFP,CEA,NSE,CA125,CA153,CA242,CA199,PSA,f-PSA,FER,?-HCG and HGH) were measured by the multi-tumor markers protein biochip detective system. Result The serum levels of CEA,CA125,Fer and CA242 in the lung cancer group were much higher than those of the other two groups.There were no significant differences of serum levels and positive rates of other tumor markers among three groups.The sensitivity of CEA,CA125,Fer and CA242 was 41.0%,35.9%,26.9% and 17.9% respectively,the specificity 89.8%,86.0%,86.6% and 95.7% respectively。 Conclusions The multi-tumor markers protein biochip detective system has diagnostic values in lung cancer.When more than three markers are positive simultaneously,the sensitivity was 24.4%,and the specificity was 96.8%.The result could help to detect the character of tumor.

Objective To explore dyslipidemia in the people in the part of enterprises in Beijing.Methods Total cholesterol, triglyceride, high-density lipoprotein cholesterol, etc., in blood were detected in the physical examination of 12908 subjects in enterprises in Beijing. Dyslipidemia was analysed for the distribution of gender and the trend of age.Results The findings showed that the occurrence of hypercholesteremia is 21.3% with 20.3% for male vs 23.0% for female; hypertriacylglycerolemia is 30.4% with 36.19% for male vs 20.49% for female; and low level of high-density lipoprotein is 6.5% with 9.4% for male vs 1.6% for female. The trend of dyslipidemia increased with age. The subjects with coronary artery disease and related high risk diseases, who need medicine care, occupied 80.6% of the subjects with dyslipidemia.Conclusion Dyslipidemia increases with age and so regular detection of lipid is necessary especially for the subjects with coronary artery disease and related high risk diseases.

OBJECTIVETo investigate the clinical effect of modified Koyanagi technique with coverage by tunica vaginalis of testis in severe hypospadias.

METHODS49 cases with severe hypospadias treated from Jan. 2009 to Sep. 2011 were retrospectively studied. 25 patients underwent Koyanagi technique with coverage by tunica vaginalis of testis. 24 cases underwent one-stage Duplay + Duckett technique in the same term. The patients were followed up for 7-24 months.

RESULTSAmong the 25 children treated with Koyanagi procedure, 20 cases were cured, 5 patients had postoperative complications, including urethral fistula in 3 cases,urethral stenosis in 2 cases. At the same time, in the Duplay + Duckett group, 17 cases were cured, 7 children had postoperative complications, including urethral fistula in 4 cases, and urethral stenosis in 3 cases. All the patients with urethral fistula were repaired successfully 6 months after the first surgery; The urethral stenosis were cured by dilatation within 1 to 3 months. The successful rate in the 2 groups had no significant difference(P >0.05).

CONCLUSIONSKoyanagi technique with coverage by tunica vaginalis of testis is relatively simple with similar effect as Duplay + Duckett technique for severe hypospadias.

Child ; Child, Preschool ; Humans ; Hypospadias ; surgery ; Male ; Postoperative Complications ; etiology ; therapy ; Retrospective Studies ; Surgical Flaps ; transplantation ; Testis ; surgery ; Urethral Diseases ; etiology ; therapy ; Urethral Stricture ; etiology ; therapy ; Urinary Fistula ; etiology ; surgery