Objective: To study the masticatory muscles activity in the cases with severe tooth wear(TW) and the damaged display of masticatory muscles in different types of occlusal wear. Methods: The electromyography(EMG) of bilateral anterior temporalis(TA), masseter muscle(MM) and anterior digastric(DA) was taken in 15 elder patients aged 49～69 years old with TW, the EMG of the patients was compared with that of 8 healthy subjects aged 49～55 years old. Results: TW patients showed higher activity of TA,MM and DA in mandibular postural position than the controls (P

Objective To evaluate the changes in the expression of DJ-1 protein during myocardial ischemia-reperfusion (I/R) in diabetic rats.Methods Fifty male Sprague-Dawley rats,weighing 220-280 g,were used in this study.Type 1 diabetes mellitus was induced by intraperitoneal streptozotocin 65 mg/kg and confirmed by fasting blood glucose ＞ 16.7 mmol/L.Forty animals with type 1 diabetes mellitus were randomly divided into 3 groups:diabetes group (group D,n =10),diabetic sham operation group (group DS,n =15) and diabetic I/R group (group DIR,n =15).Another 10 non-diabetic rats in which citrate buffer 6 ml/kg was injected intraperitoneally were served as control group (group C).Myocardial I/R was produced by occlusion of the anterior descending branch of left coronary artery for 30 min followed by 120 min reperfusion in group I/R.At 120 min of reperfusion,5 rats were sacrificed and myocardial specimens were c(on)tained for determination of infarct size in groups DS and DIR,and 10 rats were sacrificed and myocardial specimens were obtained for microscopic examination and for determination of cell apoptosis,malondialdehyde (MDA) content,superoxide dismutase (SOD) activity and expression of DJ-1 and phosphatase and tensin homologue (PTEN) protein.Apoptotic index (AI) was calculated.Linear correlation between the expression of DJ-1 protein and MDA content,SOD activity,AI and expression of PTEN protein was analyzed.Results Compared with group DS,the myocardial infract size was significantly increased in group DIR (P ＜ 0.05).Compared with group C,MDA content and AI were significantly increased,SOD activity was decreased,the expression of DJ-1 was down-regulated,and the expression of PTEN protein was up-regulated in groups D,DS and DIR (P ＜ 0.05).Compared with groups D and DS,MDA content and AI were significantly increased,SOD activity was decreased,the expression of DJ-1 was down-regulated,and the expression of PTEN protein was up-regulated in group DIR (P ＜ 0.05).There was no significant difference in the parameters mentioned above between groups D and DS (P ＞ 0.05).There was linear correlation between the expression of DJ-1 protein and MDA content,SOD activity,AI and expression of PTEN protein and the correlation coefficients (r) were-0.734,0.593,-0.818,and-0.812 in turn.Conclusion Down-regulation of DJ-1 protein expression is involved in myocardial I/R injury in diabetic rats via decreasing anti-oxidative stress responses and upregulating PTEN protein expression.

Child ; Humans ; Polysomnography ; Sleep Apnea Syndromes ; physiopathology ; surgery ; Tonsillectomy ; methods

Objective To explore the possibility of piezoelectric microarray immunosensor for the detection of Agkistrodon acutus venom. Methods Microarray immunosensor with quartz crystal of 10 MHz AT-cut and 2?5 gold-coated electrodes was prepared. The thiol-treated venom antibody was immobilized by a self assembling device for the detection of the standard fluid for different concentrations of the venom. Results Experimental results showed that the optimal concentration of the antibody was 3.0 g/ml with the response time of 40 minutes. The piezoelectric immunosensor could well respond to homologous venoms. Within the range of 0.1~4.0 g/ml, the frequency shifts were linearly dependent on the venom concentration. Conclusion Piezoelectric microarray immunosensor for the detection of Agkistrodon acutus venom is of high specificity of response, high sensitivity, and simple operation without marking. The technique of piezoelectric microarray immunosensor is possible to test snakebite quickly, quantitatively, and instrumentally.

Objective To discuss the effects of two different fluid resuscitation methods on early resuscitation and clinical prognosis in traumatic shock patients. Methods One hundred and twenty-six patients were treated with two different fluid resuscitation methods in traumatic shock (TS). These patients were randomly divided into 2 groups according to the strategy: the conventional resuscitation group (conventional group, 66 cases), the hypertouic saline solution resuscitation group (hypertonic saline group, 60 cases).The heart rate, blood pressure, breath, blood Na+ ,blood Cl-, the original thrombin time before and after the resuscitation and the syndrome were observed and analyzed. Results The input in the conventional group was (3000±500) mL, in the hypertonic saline group was (2000±200) mL. The difference of the input between the two groups was significant (P < 0. 05). The difference of the heart rate, blood pressure,breath, and the original thrombin time before and after half hour to one hour of the resuscitation in the two groups was not significant (P<0.05). The difference of the blood NA+, blood CL- and the original thrombin time before and after half hour to one hour of the resuscitation in the two groups was not significant (P <0. 05). The difference of the ARDS incidence, MODS incidence, cure rate and death rate from onset of the diseases to hospitalization in the two groups was significant (P <0. 05). Conclusions The fluid resuscitation strategy with hypertonic saline in early period of traumatic shock is efficient, which can work well with low fluid quantity, enhance blood pressure in short time, improve breath quality, save time for the operation of the primary injury, heighten the resuscitation rate, decrease the syndrome incidences and the death rate. The early fluid resuscitation strategy is worthy of clinical application and popularization.

Objective To analyze the response rate and prognostic factors for patients with locally recurrent rectal cancer treated with hypofractionated chemoradiotherapy without reresection.Methods Totally 52 patients with locally recurrent rectal cancer received hypofractionated irradiation and concurrent chemotherapy from January 2006 to January 2013 were enrolled.All patients received intensity-modulated radiotherapy (IMRT).The median dose was 63.4 Gy (61.6-64.4 Gy) at 2.2-2.3 Gy/f,5 f/week.Thirteen patients underwent prophylactic irradiation at lymph nodes region,the total dose of 45-50.4 Gy with conventional fraction and a simultaneous integrated boost was used.All patients received concurrent chemotherapy,capecitabine at 1 650 mg·m-2 ·d-1,divided into 2 times,5 d/week.The variables were compared by the chi-square test or Fisher's exact test.Local control (LC) and overall survival (OS) were calculated with using the Kaplan-Meier method.Results For all patients,the clinical complete response (CR),partial response (PR),stable disease (SD) and progressive disease (PD) was 23.1％,38.5％,32.7％ and 5.8％,respectively.The response rate (CR + PR) for patients with previous irradiation to pelvis and without were 37.1％ and 71.1％,respectively (x2 =5.40,P ＜ 0.05);for patients with 1 and 2 or more recurrent subsites were 81.8％ and 46.7％,respectively (x2 =6.63,P ＜ 0.05).Acute grade 3 skin and hematologic toxicities occurred in 19 patients (36.5％) and 1 patient (1.9％),respectively.None occurred grade 4 toxicity and none occurred grade 3 or more gastrointestinal and urologic toxicities.Four patients showed severe late toxicity of anastomotic stricture and performed a stoma at transverse colon.No other severe late toxicities were observed.The LC at 5 years was 49.1％ and the OS was 23.1％.Conclusions For patients with locally recurrent rectal cancer,hypofractionated chemoradiotherapy without resection is an acceptable and effective regimen,the response rate and long-term outcomes are promising.

Objective To compare and analyze the clinical effects of different local anesthetics on continuous epidural anesthesia for percutaneous enucleation of nucleus pulposus. Methods A total of 40 patients underwent lumbar intervertebral discoscopy (PTED) from November 2015 to November 2016, according to the choice of anesthesia is divided into group A and group B, 20 cases in each group. Group A used 0.5％lidocaine local anesthesia, group B treated with continuous epidural anesthesia (1 ％ lidocaine 3 mL+0.5％ ropivacaine).Analysis of two groups before operation, the curative effect, VAS score, modified Bromage score, intraoperative pain perception includes four criteria, namely, mild, moderate and severe, the former two satisfactory anesthetic effect; the latter two are not satisfied with the anesthesia. Results Two cases without postoperative cerebrospinal fluid leakage occurred, nerve root injury and other complications; two groups of patients with pain satisfaction difference was statistically significant (P<0.05); compared with group A, the levels of HR and MAP in group B were more stable (P<0.05). Conclusion Continuous epidural anesthesia is more suitable for PTED than local anesthesia. It can reduce the pain and the occurrence of cardiovascular and cerebrovascular accidents in patients, and does not affect the patients' lower limb movement score.

Objective To explore the neurasthenia situation of the population attending the postgraduate exam in medical class and its influencing factors .Methods The random cluster sampling method was adopted .The influencing factors were per‐formed the χ2 test and Logistic regression analysis .Results According to the inclusion criteria and exclusion criteria ,36 positive ca‐ses were screened out ,accounting for 8 .89% of participants ,which was higher than the value of the general population ;the statisti‐cally significant differences were noted in the factors of the confidence of attending the postgraduate exam ,stress ,adjusting ability , interpersonal situation ,reading duration ,sleep ,nutrition and dietary (P<0 .05) .Conclusion Attending the postgraduate exam such highly intensitive mental activity is the important reason causing neurasthenia among the population attending the postgraduate ex‐am ,which mainly display in the aspects of stress size ,bearing ability facing stress and regulation .

Objective]To explore the metastasis regulatory of lymph node of papillary thyroid cancer and to analyze the influence factors.[Methods]Clinical data of 375 papillary thyroid cancer patients at our hospital between Jun 2011 and Sep 2015 were retrospectively reviewed and summarized the metastasis regulatory of lymph nodes and the tumor characteristics.[Results]All selected patients were diagnosed papillary thyroid cancer. The Total metastasis rate of cervical lymph node was 67.47%,the metastasis rate of region Ⅵ lymph nodes was 64.27%;the metastasis rate of region Ⅱ~Ⅴ lymph nodes was 36.53%. The metastasis rate of lymph nodes of the patients with tumor diameter over 1 cm,breaking through thyroid membrane and invading the cervical muscle were significantly increased(P < 0.05).[Conclusion]The central group lymph nodes were the most metastasis region of papillary thyroid cancer and should routinely be dissected by the first time of surgery. When the tumor diameter greater than 1 cm or cancer breakthrough thyroid membrane and/or invading the cervical muscles ,the ipsilateral lateral neck lymph nodes should be dissected at the same time.