BACKGROUND:The lumbar interspinous device, as a kind of non-fusion technology has been extensively applied in the clinic and exerts superiority in biomechanics compared with the traditional fusion technology. With the development of prosthesis design and impanation technology, it reveals a better application prospect. OBJECTIVE:To review the biomechanics and finite element analysis of lumbar interspinous devices. METHODS:The first author retrieved the databases of CNKI, WanFang, PubMed and SpringerLink using the keywords of“lumbar spine, interspinous devices, biomechanics, finite element analysis”in Chinese and English, respectively. Researches related to the biomechanics and finite element analysis of lumbar interspinous devices were included and repeated researches were excluded. A total of 44 literatures were enrol ed for review, including 8 Chinese and 36 English literatures. RESULTS AND CONCLUSION:(1) Biomechanical y, several interpinous devices, which are commonly used in the clinic, can increase the stability of the implanted segment in sagittal alignment by limiting the range of flexion-extension, with no significant change in lateral bending and axial rotation. (2) Few studies analyze the influence of the implant size and placement on the implanted segment and on the adjacent segments. (3) Through the stress nephogram, three-dimension finite element analysis can intuitively analyze the changes of the stress distribution in the intervertebral disc, isthmus and facet joints before and after implantation. Both biomechanical studies and finite element analysis indicate that interspinous devices can share the load of the disc and facet joints, and at the same time, make no effect on the range of motion and stress of the adjacent segment. (4) In conclusion, the short-term biomechanical advantage of the interspinous devices is obvious, but further studies are needed. The finite element analysis can simulate different body physical environment, and can analyze mechanical distribution changes after implantation, which is an effective way to evaluate the mechanical mechanism of the interspinous devices.

Objective To explore the significance and value of Kisspeptin in the diagnosis and therapeutic evaluation for idiopathic central precocious puberty(ICPP) in girls.Methods Twenty-four girls with ICPP and 21 girls with premature thelarche(PT) who were hospitalized in the Children's Hospital of Jiangxi Province from Jun.2012 to Jan.2013 were selected as ICPP group and PT group,and 25 healthy girls were selected as healthy control group.The coagulation vein blood in ICPP girls before treatment and after 6 months treatment and PT girls and healthy girls were collected,and enzyme linked immunosorbent assay was used to detect the plasma Kisspeptin level,and t test was used to analyze the differences among the 4 groups.Results The Kisspeptin level of girls with ICPP [(1.80 ± 0.13) μg/L]was apparently higher than that of PT groups [(1.41 ± 0.10) μg/L] and healthy control group[(1.39 ± 0.13) μg/L],and the differences were statistically significant (t =10.974,14.787,all P =0.000).However,the difference of Kisspeptin between PT group and healthy control group was not statistically significant(t =10.970,P =0.095).In addition,the Kisspeptin level of ICPP girls who undewent 6-month treatment [(1.49 ± 0.15) μg/L] was significantly lower than that before treatment,and the difference was statistically significant (t =10.80,P ＜ 0.05) ;but,compared with PT group and healthy control group,there was no significant difference (t =6.32,P =0.060 ; t =7.44,P =0.214).Conclusions Kisspeptin level is related with pubertal development,and it can be used as an important evidence in ICPP diagnosis and an important parameter in ICPP therapeutic evaluation.

Heart Aneurysm ; mortality ; pathology ; surgery ; Humans ; Mitral Valve Insufficiency ; mortality ; physiopathology ; surgery ; Myocardial Infarction ; mortality ; physiopathology ; surgery ; Ventricular Dysfunction, Left ; pathology ; surgery

Objective To investigate the in vitro inhibitory effect of LIGHT on human esophageal carcinoma cells. Methods LIGHT Fc expression vector was transfected into human esophageal squamous carcinoma cell line, Eca109. The inhibitory effect of LIGHT gene on cell growth was detected by MTT and cell growth curve. The expressions of LT?R and HVEM were detected by RT PCR. Results Expression of LIGHT Fc gene could inhibit Eca109 cell proliferation. The growth curve of Eca109/LIGHT was significantly lower than that of the control group in the culture medium containing 1% FCS. MTT test showed that there was significant difference in cell viability between Eca109/LIGHT and the control group ( P

Objective: To investigate into the etiological factor,distribution of syndrome(patterns),pathogenesis features as well as the curative effects of small compound prescriptions of(Traditional) Chinese Medicine(TCM) in the treatment of acute stroke in stroke unit.Methods:(Cases) corresponding to diagnosis standards were randomly divided into control group(102 cases) and treatment group(156 cases).Conventional treatment methods were given to cases in control group.On the base of control group,small compound prescriptions were added to in treatment group,successively 14-21 days.The relation between types and time and TCM scale(TCMS),the NIH stroke scale(NIHSS) and Barthel index(BI) were observed in the two groups.Results: Stroke was age-related,the older,the more stroke patients.Stroke was closely related to hypertension.Ascending hyperactivity of liver yang was main type in the previous three days,this type(decreased) with the time going on.On the contrary,the type of wind phlegm and blood stasis was secondly main type in the previous three days,it increased with the time going on.Types of ascending hyperactivity of liver yang,wind phlegm and blood stasis as well as phlegm heat and constipation covered 95 per cent of all patients in the previous 21days.In the two groups,the mean scale of TCM and NIH decreased,and BI increased after treatment,this statistical difference could also be seen between the two groups.Conclusion: Excessive types are main types in the acute stage of stroke.Types of ascending hyperactivity of liver yang,wind phlegm and blood stasis as well as phlegm heat and constipation are its main types.Transferring of ascending hyperactivity of liver yang into endogenous wind may be trigger of reaction link of wind,fire,phlegm and blood stasis in TCM theory.Small compound prescriptions of TCM aiming to clearing away liver fire to stop wind,to activate blood for removing blood stasis and phlegm,to removing phlegm and heat from discharge can reduce scale of TCM and NIH,increase BI in the treatment of patients in stroke unit,which provide beneficial proofs for evaluation of effects of TCM.

Objective To measure plasma microRNAs dysregulated in patients with pancreatic cancer and to assess the potential of these miRNAs as biomarkers for pancreatic cancer.Methods Thirty-seven patients with pancreatic cancer who underwent pancreatic resection between June 2010 to July 2011 were enrolled in the Lihuili Hospital,and ten healthy volunteers were used as control in this study.The expression levels of miR-190,miR-196a,miR-221 and miR-222 were analyzed using quantitative real time polymerase chain reaction (qRT-PCR).U6 was used as an internal control.The relationships between clinicopathoiogic characteristics of pancreatic cancer and microRNA expression levels were analyzed.Results The relative abundances of plasma microRNAs were significantly higher in pancreatic cancer patients than in the control group.The highly expressed plasma miR-190,miR-196a,miR-221,miR-222 levels did not correlate with clinicopathologic characteristics of patients such as sex,age,tumor maximal diameter,and level of serum CA199.The plasma miR-196a levels showed a positive correlation with TNM stage in pancreatic cancer patients.Conclusions The plasma levels ofmiR-190,miR-196a,miR-221 and miR-222 were highly upregulated in pancreatic cancer patients.These microRNAs in plasma may provide a new method in the early diagnosis of pancreatic cancer.

AIM:To observe the effects of neuroglobin ( NGB) overexpression on the apoptosis induced by Aβin the brains of double transgenic AD ( APPswe/PS1dE9) mice and to explore its potential mechanisms .METHODS:Twenty-four 13-month-old double transgenic AD mice were randomly divided into 3 groups:intracerebroventricular injection with normal saline (NS) group, intracerebroventricular injection with pcDNA3.1 and NS group, and intracerebroventricular injection with pcDNA3.1 and pNGB group.Immunohistochemistry was used to detect the expression of Aβ1-42 in the brains. TUNEL staining was used for analyzing the apoptosis , and the protein levels of cleaved caspase-3, caspase-9, PI3K, Akt and p-Akt were determined by Western blot .RESULTS: After intracerebroventricular injection with pNGB , the areas of Aβ1-42 in the hippocampus and cortex were decreased compared with NS group and pcDNA 3.1+NS group (P<0.01).The TUNEL-positive staining cells in the pNGB group were less than those in NS group and pcDNA 3.1 group ( P<0.01 ) . NGB overexpression attenuated the protein levels of cleaved caspase-3 and caspase-9 (P<0.01), but induced the produc-tion of PI3K and p-Akt (P<0.01).CONCLUSION:Overexpression of pNGB significantly inhibits the generation of Aβand attenuates the apoptosis induced by Aβ, indicating that NGB overexpression activates PI 3K/Akt pathway and inhibits the production of cleaved caspase-3 and caspase-9, which were tightly related with apoptosis .

Objective To know the effects of living with the elderly on nursing students' willingness engaging in aged nursing and attitude towards the elderly so as to provide references for nurturing professionals for caring for the aged.Methods 231 nursing students were surveyed.The questionnaire included four parts,general information,life experience with the elderly,willingness engaging in aged nursing,attitude towards the elderly and cognition of aging.Results 45.9 percent of the nursing students were willing to engage in aged nursing.Living with elderly and relationship with the elderly affected their willingness.Conclusions Creating more opportunities for nursing students in touch with the elderly can help nursing students to have a good impression of the elderly and stimulate them to choose aged nursing.

AIM: To study the effect of shenmai injection (SMI), a Chinese medicine, on nitric oxide and the expression of endothelial nitric oxide synthase (eNOS) mRNA in myocardium of rats with experimental myocardial ischemia. METHODS: Rats were randomly divided into four groups: control, model (ischemia), SMI 1 and SMI 2 group. A rat model of acute myocardial ischemia was established by isoprenaline treatment and the lift of ST segment in ECG was used as the index of myocardial ischemia. The nitric oxide (NO) contents in serum and myocardium and the expression of eNOS mRNA in myocardium were measured. RESULTS: Compared with control group, ST segment of ECG was significantly elevated 20, 30, 40 min after myocardial ischemia in model group, the lift peak of ST segment occurred 20 min after myocardial ischemia, the concentration of NO in the serum and myocardium and the expression of eNOS mRNA in myocardium were significantly lowered in model group. Compared with the model group, in SMI 1 group and SMI 2 group, the concentration of NO in the serum and myocardium and the expression of eNOS mRNA in myocardium were significantly increased, the lift of ST segment were significantly reduced 20, 30, 40 min after myocardial ischemia. Compared with SMI 1 group, the concentration of NO in the serum and myocardium and the expression of eNOS mRNA in myocardium and the lift of ST segment were not statistically different in SMI 2 group. CONCLUSION: Shenmai injection can increase the expression of eNOS mRNA in myocardium and the content of NO, and protect against myocardial ischemia in rats.