Objective To explore the changes in serum protein profiles in rats after psychological stress. Methods Twenty-four male Wistar rats were randomly divided into psychological stress group,control group and stressor group. Rats in stressor group received intermittent foot-shock. Instead of foot-shock,the rats in psychological stress group received the stimulating information from stressor group by watching,listening and smelling. Rats in control group were kept in individual cages and received no stimulation. Experiments were performed once every morning for two weeks. Serum samples of rats in both psychological stress group and control group were obtained and the changes in protein profiles were determined and statistically analyzed by Surface Enhanced Laser Desorption Ionization-Time of Flight-Mass Spectrometry (SELDI-TOF-MS) after the experiments. Results Variance analysis showed that the relative contents of proteins with M/Z values of 8870.18,6860.85,8625.13 and 11 413.91Da decreased significantly in rats of psychological stress group as compared with control group (P

Objective To evaluate the effects of hypogastric artery ligation to treat massive hemorrhage in pelvic fractures with abdominal organ injuries. Methods The pelvic fractures of 16 patients were classified as Tile B type in 10 cases and C type in 6. Among them there were 6 open fractures and 20 sites of abdominal visceral injuries. The capacity of retroperitoneal hematoma, which was ruptured in 6 cases, ranged from 800 ～2 500ml with 1 400ml on average. The bleeding volume in the survivals was 1 500～5 800ml with 2 600ml on average. Ligation of bilateral hypogastric artery was carried out in all patients with intra abdominal injuries within 6h. Of them, skeletal traction was used in 7 cases while pelvic external fixation in 5 cases. Results One death occured dut to consumptive coagulopathy with hematorrhea. Of the 15 survivals, bleeding was controlled in 8 cases, decreased in 5 and uncontrolled in 2. The effective rate was 81.3%(13/16) and the survival rate 93.8%(15/16). Conclusion When emergency celiotomy is performed for abdominal injuries, a rational application of hypogastric artery ligation can play a positive role in control of pelvic hematorrhea.

Objective To summarize the experience in prevention and treatment of bile duct injury during laparoscopic cholecysteclomy(LC). Methods Retrospective analysis on the clinical data of 31 cases of LC was carried out. Of them, 27 underwent one stage operative repair and 4 underwent palliative external drainage of the bile duct first. Results 16 cases succeeded and 11 failed in the one stage operative repairing.There were 15 cases underwent 2～4 operations in this series,and the re-operation rate was 48.4%. 29 patients was cured while 2 died. Conclusions During LC, the operative rule should always be strictly observed, and the key to preventing bile duct injury is to avoid clipping, cutting and coagulation blindly.

Objective To evaluate the therapeutic effect of combination of sandostatin and growth hormone (GH) in the treatment of severe acute pancreatitis (SAP ). Methods Sixty patients with SAP were divided randomly into 3 groups:(1)Sandostatin treatment(ST) group (n=15);(2)combination of sandostatin with GH treatment(CT) group (n=30) ;(3)control group (n=15). The changes in serum IL-1, IL-6,TNF-? and albumin levels after treatment, and the incidence of complications, the duration of hospital stay and cost were compared among the 3 groups. Results The complications, mortality, duration of hospital stay in the CT group were significantly shorter than those in ST group and control group (all P

Objective To investigate the risk factors leading to complications in patients undergoing laparoscopic cholecystectomy (LC). Methods Clinical data of 11?974 patients undergoing LC from Mar. 1991 to June 2003 were collected and analyzed retrospectively. Fifteen clinical factors were recruited for the study in relation to surgical complications. Data were analyzed by ?2 test and Logistic regression. Results The overall operative complication rate was 1.896%. The procedure was shifted to open surgery in 2.389% of all cases, Logistic regression analysis revealed that Calot triangle adhesion, stage, expertise of the team, gallbladder wall thickness, gallbladder and vicinity adhesion were important risk factors for complications. Conclusion LC complications can be prevented by good training, strictly following protocol, and timely shifting to open surgery.

Objective To explore the changes of serum lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) and the level of lipids in patients with obstructive sleep apnea hypopnea syndrome (OSAHS).Methods A total of 94 candidates with sleep disorders between January-July 2011 at outpatient department were monitored with polysomnography.According to apnea-hypopnea index (AHI),they were divided into mild-to-moderate OSAHS (5 ≤ AHI ≤ 30) (n =27),severe OSAHS (AHI ＞ 30) (n =37) and normal control groups (AHI ＜ 5) (n =30).After polysomnography,their blood samples were obtained to measure the levels of serum LOX-1,triglycerides (TG),cholesterol (TC),high-density lipoprotein (HDL-C) and low-density lipoprotein (LDL-C).Results The serum level of LOX-1 in severe OSAHS group was significantly higher than that in the mild-to-moderate and control groups (P ＜ 0.01).The serum level of LOX-1 in OSAHS patients was positively correlated with AHI and longest apnea time (LAT)(r =0.645 & 0.501 respectively,both P ＜ 0.01) and was negatively correlated with SaO2 (r =-0.647,P ＜0.01).No significant difference existed in serum lipids in all groups (P ＞ 0.05).Conclusions Intermittent hypoxia caused by OSAHS increases the level of LOX-1 to further promote the formation and development of atherosclerotic in patients with OSAHS.The levels of lipid can not effectively predict the severity of lipid metabolism disorder in patients with OSAHS.

Background Posterior capsule opacification (PCO) is a main cause for visual acuity decline after modern extracapsular cataract surgery.Objective The aim of this study was to investigate the effect of rapamycin on PCO formation following phacoemulsification combined with intraocular lens (IOL) implantation in rabbit eyes.Methods Thirty New Zealand albino rabbits were randomized into three groups according to the difference in the implanted IOLs:conventional IOL without modification,IOL coated by a polymer material and IOL with sustained released rapamycin.Phacoemulsification combined with intraocular lens implantation surgery was performed in the left eye.The anterior ocular segment and PCO formation in the rabbit eyes were examined by slit lamp biomicroscope 1-7 days after operation,and the flare and inflammatory response of the anterior chamber as well as the degree of PCO severity were graded based on the criteria of Yang.The differences in examination outcomes were compared by the Kruskal-Wallis H test.The animals were sacrificed 12 days after surgery and eye specimens were prepared for histopathological examination to evaluate the biological behavior of lens epithelial cells (LECs) on the posterior capsule.Results The coated area of the implanted lens was semi-transparent with a smooth surface.The number of eyes with aqueous flare at grades 3 and 4 insignificantly increased but those with an inflammatory response at grades 3 and 4 significantly increased in the conventional IOL group and the polymer modified IOL group,compared with the rapamycin modified IOL group on the first day after operation (H =4.038,P =0.133 ; H =8.604,P =0.014).On the seventh day,the number of eyes with aqueous flare at grades 3 and 4 and inflammatory response at grades 3 and 4 significantly increased in the conventional IOL group and the polymer modified IOL group,compared with the rapamycin modified IOL group (H =8.891,P =0.012 ; H =7.664,P =0.0220).The histopathological examination showed that marked proliferation of LECs appeared between the anterior and posterior capsule in the conventional IOL group and the polymer modified IOL group;however,less LECs and regenerative cortex were seen in the rapamycin modified IOL group.Conclusions IOL loaded with rapamycin can inhibit the inflammatory response and alleviate the severity of PCO after phacoemulsification combined with IOL implantation.The implantation of IOL loaded with rapamycin may be a new approach to the prevention and treatment of PCO.

Adolescent ; Adult ; Female ; Humans ; Lacerations ; surgery ; Lower Extremity ; injuries ; surgery ; Male ; Middle Aged ; Surgical Flaps

Erythrocyte Count ; Erythrocytes ; Longevity

AIMTo investigate the roles of serotonergic neurons in dorsal raphe nuclei (DRN) in sleep.

METHODSStereotaxic, microinjection and polysomnography (PSG) were used in the experiment.

RESULTSMicroinjection of L-glutanate (L-Glu) into the DRN decreased slow wave sleep (SWS) and paradoxical sleep (PS), and increased wake (W). Microinjection of kainic acid (KA) and p-chlorophenylalanine (PCPA) respectively into the DRN, SWS and PS were promoted, and W was reduced.

CONCLUSIONSerotonergic neurons in dorsal raphe nuclei involved in the regulation of sleep. Sleep was reduced when the serotonergic neurons were excited, and when the neurons were inhibited. sleep was increased

Action Potentials ; Animals ; Male ; Neurons ; physiology ; Polysomnography ; Raphe Nuclei ; physiology ; Rats ; Rats, Sprague-Dawley ; Serotonin ; physiology ; Sleep ; physiology