Congresses as Topic ; Head and Neck Neoplasms

AIM: To assess if endogenous arginine vasopressin is involved in normal thermoregulatory processes. METHODS: Core temperature was monitored in undisturbed rats using radiotelemetry. Effect of AVP V 1 antagonist on normal body temperature were observed in rats under a 12:12 light-dark cycle. RESULTS: Intraperitoneal injection of AVP V 1-receptor antagonist in rats induced a increase in normal body temperature. Under normal light (light on at 6:00 AM-6:00 PM), AVP V 1 antagonist induced a increase in body temperature persisting for about 6 hour, but male rats had higher hyperthermia than female. Under normal dark exposure (light off at 6:00 PM- 6:00 AM), AVP V 1-receptor antagonist caused a increase in body temperature persisting for about 2 hour at the start of the dark phase, but no difference was found between sexes. CONCLUSION: Intraperitoneal injection of AVP V 1-receptor antagonist caused a increase in normal body temperature. The data indicated that endogenous vasopressin could be involved in tonic thermoregulatory process.

2 0), and also by RT PCR. The gene expression in metastasis group was 6 86?1 84, and it was higher than that in non metastasis group. The results suggested that the high expressions of neural cell adhesion molecule gene might be correlated with the pathogenesis of NHL.

?AIM: To study the changes of choroidal thickness and hemodynamic parameters in patients with diabetic retinopathy and their influencing factors.?METHODS: From January 2013 to January 2015, 100 patients (100 eyes) with type 2 diabetes were divided into 3 groups:34 patients without diabetic retinopathy ( NDR) , 36 patients with non proliferative diabetic retinopathy ( NPDR) group, and 30 patients with proliferative diabetic retinopathy (PDR). According to the results of OCT, the patients with diabetic retinopathy were divided into 2 groups: diabetic macular edema ( DME ) group ( 28 cases) , and 38 cases without diabetic macular edema. During the same period in our hospital 35 subjects for physical examination were selected as the control group. The hemodynamic parameters of the posterior ciliary artery in different groups of patients at different distance from the center of the macular were compared, analyzing influencing factors.?RESULTS:With the aggravation of diabetic retinopathy, the choroidal thickness in different distance from the center of the macular decreased. The choroidal thickness of NPDR and PDR group were thinner than that of the control group (P<0. 05). The choroidal thickness of NDR group was not different from the control group (P>0. 05). There was no significant difference in the choroidal thickness between the DME patients and non DME patients (P>0. 05). Pearson correlation analysis showed that there was no significant correlation between choroidal thickness of patients with diabetic retinopathy and diabetic duration, fasting blood glucose, HbA1c, eye axis length, systolic blood pressure and diastolic blood pressure (P>0. 05), but there was a correlation with BCVA (logMAR) (P<0. 01). EDV and PSV in NDR group and NPDR group were significantly lower than those in control group, RI was higher than that in control group. PSV and EDV in PDR group were significantly lower than those in other three groups, RI was higher than the other three groups, and the difference was statistically significant ( P<0. 05).?CONCLUSION:With the severity of retinopathy in type 2 diabetic patients, the choroidal thickness decreased, and the thickness of the choroid is beneficial in the comprehensive analysis of 2 diabetic retinopathy.

Adolescent ; Heart Valve Diseases ; etiology ; Heart Valves ; pathology ; Humans ; Lupus Erythematosus, Systemic ; complications ; pathology ; Male

Objective To evaluate the effects of mechanical ventilation preconditioning on the expression of Rho-associated kinase 1 (ROCK1) in the lung tissue in a rat model of ventilator-induced lung injury.Methods Forty-eight male Sprague-Dawley, aged 8-12 weeks, weighing 250-300 g, were randomly assigned into 6 groups (n =8 each) using a random number table: control group (group C);normal mechanical ventilation group (group N);mechanical ventilation with large tidal volume (VT) group (group L);preconditioning with mechanical ventilation with different VT groups (P1, P2 and P3 groups).The animals were anesthetized with intraperitoneal pentobarbital sodium, and tracheostomized.In group C, the animals kept spontaneous breathing after intubation.In group N, the animals were mechanically ventilated for 3 h with the VT of 8-10 ml/kg.In group L, the animals were mechanically ventilated for 3 h with the VT of 40 ml/kg.In P1, P2 and P3 groups, the animals were mechanically ventilated for 30 min with the VT of 6-7, 20 and 30 ml/kg, respectively, and then were mechanically ventilated for 3 h with the VT of 40 ml/kg.The respiratory rate was 40 breaths/min, and inspiratory/expiratory ratio was 1 : 1.The animals were sacrificed at the end of ventilation.Broncho-alveolar lavage fluid was collected, and pulmonary permeability index (PPI) was calculated.Lungs were removed for examination of pathological changes which were scored,and for detection of the wet to dry lung weight ratio (W/D ratio), apoptosis in alveolar epithelial cells, and expression of ROCK1 (by immunohistochemistry and Western blot).Apoptosis index (AI) was calculated.Results Compared with group C, the pathological scores, W/D ratio, PPI and AI were significantly increased, and the expression of ROCK1 was up-regulated in L, P1, P2 and P3 groups (P＜0.05) , and no significant change was found in the parameters mentioned above in group N (P＞0.05).Compared with group L, the pathological scores, W/D ratio, PPI and AI were significantly decreased, and the expression of ROCK1 was down-regulated in group P1 (P＜0.05) , and no significant change was found in the parameters mentioned above in P2 and P3 groups (P＞0.05).Conclusion The mechanism by which mechanical ventilation preconditioning decreases ventilator-induced lung injury may be related to inhibition of the expression of ROCK1 in lung tissues of rats.

Objective To evaluate the effects of mechanical ventilation preconditioning on ventilatorinduced lung injury in rats.Methods Forty-eight healthy male Sprague-Dawley rats,weighing 250-300 g,were randomly assigned into 6 groups (n =8 each) using a random number table:control group (group C),normal ventilation group (group N),mechanical ventilation with large tidal volume (VT) group (group L) and mechanical ventilation preconditioning group (group P).The animals were anesthetized with intraperitoneal 2 ％ pentobarbital sodium 0.2 ml/100 g.Tracheal intubation was performed.In group C,the animals kept spontaneous breathing after intubation.In group N,the animals were mechanically ventilated for 3 h with the VT of 8-10 ml/kg.The animals were mechanically ventilated for 3 h with the VT of 40 ml/kg in group L.In group P,the animals were mechanically ventilated for 30 min with the VT of 6 ml/kg,and then were mechanically ventilated for 3 h with the VT of 40 ml/kg (RR 40 bpm,I:E =l:l,PET CO2 35-45 mmHg).The animals were sacrificed at the end of ventilation,and the lungs were removed for measurement of wet to dry lung weight ratio (W/D ratio) and cell apoptosis and for microscopic examination of the pathological changes of the lung and the lung injury was scored.The apoptosis.index was calculated.Results Compared with group C,the lung injury score,W/D ratio,and apoptosis index were significantly increased in L and P groups,and no significant change was found in the parameters mentioned above in group N.Compared with group L,the lung injury score,W/D ratio,and apoptosis index were significantly decreased in group P.Conclusion Mechanical ventilation preconditioning can reduce ventilator-induced lung injury in rats.

Objective To systematically review the efficacy of dexmedetomidine and fentanyl-class drugs for induction in awake intubation patients.Methods We searched the PubMed,Embase, Cochrane library,Wanfang Database,CNKI,VIP and China Biology Medicine (CBM)for all ran-domized controlled trials (RCTs)about the efficacy of dexmedetomidine versus drugs of fentanyl class (fentanyl,sufentanil,remifentanil)for induction in awake intubation patients.The quality of the studies was evaluated by the method recommended by Cochrane Collaboration.Meta-analysis was con-ducted using the Cochrane Collaboration's RevMan 5.0 software.Results Ten RCTs involving 400 patients were included in our Meta-analysis.The results of meta-analysis showed that the ramsay se-dation scores in awake intubation patients was higher in group dexmedetomidine than that of group fentanyl-class drugs (P<0.05).Compared with group fentanyl-class drugs,the incidence of compli-cations such as hypertension,respiratory depression,bucking and post-surgical memory in the group dexmedetomidine was lower (P<0.05).Conclusion The efficacy of dexmedetomidine is better than that fentanyl-class drugs for induction in awake intubation patients.

Objective To evaluate the protective effects of lung protective ventilation on the lungs in patients undergoing radical resection for esophageal cancer.Methods Sixty-eight patients of both sexes,aged 40-64 yr,of ASA physical status Ⅰ or Ⅱ,with body mass index 17-40 kg/m2,scheduled for elective radical resection for esophageal cancer,were randomly divided into conventional ventilation group (CV group,n =34) and protective ventilation group (PV group,n =34) using a random number table.Double lumen tube was inserted after induction of anesthesia,an anesthesia machine was connected,and the patients were mechanically ventilated.In group CV,VT was set at 10 ml/kg during two-lung ventilation,and VT was set at 7 ml/kg,and I ∶ E was set at 1 ∶ 2 during one-lung ventilation.In group PV,VT was set at 7 ml/kg during two-lung ventilation,VT was set at 5 ml/kg,I ∶ E was set at 1 ∶ 2,and PEEP was set at 10 cmH2O during one-lung ventilation,and bilateral lung recruitment maneuver was performed every 45 min.Before induction of anesthesia,and at days 1,3,and 5 after surgery,blood gas analysis was performed,and Clinical Pulmonary Infection Score was recorded.Before induction of anesthesia,and at 5 days after surgery,point-of-care testing for pulmonary function was performed,and percentages of maximum ventilatory volume (MVV％),forced vital capacity (FVC％),and forced expiratory volume in 1 second (FEV1％) were recorded,and FEV1/FVC was calculated.The development of respiratory failure,pulmonary atelectasis and incision infection was recorded within 5 min after surgery.Results Compared with group CV,MVV％,FVC％,FEV1％ and FEV1/FVC were significantly increased,Clinical Pulmonary Infection Score was decreased at each time point after surgery,SaO2 and PaO2 were increased,and no significant changes were found in pulmonary atelectasis and incision infection in group PV.Conclusion Lung protective ventilation can effectively protect the lungs in the patients undergoing radical resection for esophageal cancer.