Objective To explore the relationship between work engagement and job-person fit among nurses.Methods 465 nurses from five first-class general hospitals in Chengdu were assessed by the Utrecht Work Engagement scale(UWES)and the Areas of Worklife Survey(AWS).Results The mean value of work engagement among nurses was (3.21±1.09).Work engagement and job-person fit were positively related.Regression analysis suggested that job-person fits were significant predictors of nurses'work engagement.Exactly,value fit,workload fit,control fit and fairness fit were effective predictors of vigor.Value fit,fairness fit,reward fit and workload fit were effective predictors of dedication.Value fit,control fit,fairness fit and community fit were effective predictors of absorption.Conclusions The work engagement in nurses was at the moderate level.Job-person fits were powerful predictors of work engagement.Good fit among the six areas of work life can improve the work engagement among nurses.

Purpose To investigate the expression of autophagy-related protein LC3B in cervical squamous carcinoma and its relation-ship with Ki-67 expression. Methods To detect the expression of LC3B in 16 cases of normal cervical tissues and 126 cases of squa-mous cell carcinoma by immunohistochemical staining. In addition, Ki-67 protein was also detected in 126 cases of squamous cell car-cinoma in the same assay. The relationship between LC3B expression and Ki-67 in cervical squamous cell cancer was statistical analy-sis. Results Expression level of LC3B were significantly lower in cervical squamous carcinoma than normal squamous epithelial cells (P<0. 05), and the expression of LC3B was negatively correlated with Ki-67(rs = -0. 248, P<0. 05). Conclusion It appears that decreased levels of autophagy which indicated by low expression of LC3B may promote cancer cell proliferation in the early stages of cervical squamous cell carcinoma, which provides a clinical referential evidence for further explore the mechanism of autophagy in cer-vical cancer development.

AIM: To study the application of macular ganglion cell complex (mGCC) and peripapillary retinal nerve fiber layer thickness (pRNFL) measured by optical coherence tomography (OCT) in the early diagnosis of glaucoma.METHODS: Case-control study.Eighty-six subjects, including 30 eyes in normal subjects, 27 eyes in suspected primary open angle glaucoma, 29 eyes in primary open angle glaucoma were enrolled in this study.The thickness of mGCC and pRNFL were measured by OCT.The area under the receiver operating characteristic(AROC) curve at fixed specificities were calculated for each parameter.RESULTS: There were significant differences in mean pRNFL thickness, superior pRNFL thickness and inferior pRNFL thickness between normal group, suspected glaucoma group and early glaucoma group (P=0.001, 0.004, 0.011).The mean mGCC thickness, the thickness of the top mGCC, the thickness of the lower mGCC were statistically significant (P=0.008, 0.002, 0.003);the difference of general loss of volume (GLV) and focal loss of volume (FLV) between the three groups was statistically significant (P=0.002).Compared with the normal group, all the pRNFL and the mGCC parameters were higher in the suspected glaucoma group, and the FLV had the highest AROC (0.801), all the remaining AROC was >0.700 except above Prnlf (0.688).Compared with the normal group and the early glaucoma group, all the pRNFL and the mGCC had higher AROC, average mGCC was hightest(0.804), all parameters AROC were >0.700 except mean pRNFL (0.683).In suspected glaucoma group, 58% patients had abnormal mGCC thickness and 23% had abnormal pRNFL thickness;in early glaucoma group, 98%patients had abnormal mGCC thickness and 90% had abnormal pRNFL thickness;in normal group, 93%patients had abnormal mGCC thickness and 93%had abnormal pRNFL thickness, the correlation between the three groups was statistically significant (x2=12.11, P<0.05).CONCLUSION: OCT measurement of mGCC thickness and pRNFL thickness in early glaucoma have good diagnostic ability;mGCC thickness measurement can be used as an effective method for early diagnosis of glaucoma.

Analysis was made in 3 patients with central nervous system lymphoma(CNSL) with different manifestations;neuroradiological and immunocytological investigations were used to improve the clinical diagnosis of CNSL.Three patients with CNSL presented with 3 distinct profiles:diffuse meningeal invasion, intracranial masses of tumor and intramedullary spinal invasion. Both contrast enhanced CT and MR provided CNSL lesions in the brain parenchyma and meninges. It is suggested that combining CT,MR findings and immunological markers can improve clinical diagnosis of CNSL.

【Objective】To observe the effect of Zhuyun Prescription Ⅲ(ZPⅢ),which is composed of kidney-tonifying and spleen-strengthening herbal medicine,on T lymphocyte antigen recognition receptors(TCR?&T) in luteal insufficiency abortion rats with deficiency of kidney.【Methods】Forty SD rats were equally randomized into 5 groups: blank control group,model group,high-and low-dose ZPⅢ groups(in the doses of 7.08 and 3.54 g?kg-1?d-1,respectively) and allylestrenol tablets(1.5 mg?kg-1?d-1) group.Luteal insufficiency abortion rats model with deficiency of kidney was established by hydroxyurea(450 mg?kg-1)and mifepristone(3.75 mg?kg-1).The uterus weight,the amount of embryo and the abortion rate were observed,and the peripheral blood levels of TCR?&T and CD3+T lymphocytes were detected with flow cytometer.【Results】The uterus weight and the amount of embryo were decreased,and the abortion rate was increased in the model group(P

Objective To investigate the effect of palato-pharyngo-plastry on patients with coronary heart disease (CHD) plus obstructive sleep apnea hypopnea syndrome (OSAHS). Methods The 113 OSAHS patients with CHD after palato-pharyngo-plastry from January 2001 to December 2006 were enrolled and followed up. The other 125 cases treated with continuous positive airway pressure (CPAP) were as control group. Results The fundmental factors of CHD including cholesterol, triglyeride, fasting blood glucose and body mass index (BM1) showed no statistical differences between two groups (x2 or t= 4.788, 0.479, 0.541, all P>0.05) . Only the oxyhemoglobin saturation during sleep was higher in study group than in control group [(91.2± 2.5)% vs. (87.6±4.2)%, P=0.046]. The angiography showed that 87 cases (77.0%) retained stable, 24 cases (21.2%) became severe in study group. As compared with control group, there were no statistical differences (both P>0.05). 37 cases (32.7%) in study group and 58 cases (46.4%) in control group who suffered from angina became severe with statistical differences between two groups (x2=4.615, P=0.032). The incidences of myocardial infarction and sudden death were lower in study group (3.5% and 0.8%) and in control group (5.6% and 2.4%), showed no statistical, difterences be tween twogroups. x2=0.571 and 0.495, P>0. 05). Conclusions Compared with CPAP, the palato-pharyngo-plastry can improve oxyhemoglobin saturation and reduce angina symptom, but has no better effect on progress of coronary atherosclerosis and acute coronary disease than CPAP.

BACKGROUND: Basic fibroblast growth factor (bFGF), a kind of polypeptide growth factor possessing multifunctional biological activities,can protect neurons and promote the growth of nerves. It has been corfirmed that bFGF has therapeutic effects on retina ischemia/reperfusion injury (RIRI).OBJECTIVE: To establish RIRI model and analyze the effects of bFGF on cellular apoptosis of retina and the expression of regulatory gene protein.DESIGN: Randomized grouping and validating trial.SETTING: Department of Ophthalmology, the Affiliated Hospital of Medical College of Qingdao University.MATERIALS: The experiment was conducted at the Research Laboratory of Pathology, Department of Ophthalmology, Medical College of Qingdao University, from April 2002 to December 2003. Twenty-eight healthy Wistar rats were enrolled in this experiment. Four rats were randomly chosen for normal control group, the left eyes of the other 24 rats were set as normal saline control group, and the right eyes were set as bFGF group.METHODS: Normal saline control group and bFGF group adopted the rat RIRI models established by transiently elevating intraocular pressure. Normal saline of 12 μL was injected into the vitreous cavity of the left eyes of the rats in normal control group. 12 μL bFGF was injected into the vitreous cavity of the right eyes of the rats in bFGF group, 4 rats once. No administration was given in normal control group. The expression of apoptotic cells was detected and apoptosis indexes were calculated with the terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labeling (TUNEL) method and immunohistochemical staining method at the 1st, 6th,12th, 24th,48th and 72nd hours after reperfusion and ischemia for 1 hour.MAIN OUTCOME MEASURES: ① The detection results of apoptotic cells in situ of retina tissuesat different time points after reperfusion. ②The expression of Fas and caspases-2 in retina tissues at different time points after reperfusion.RESULTS ① Comparison of apoptosis indexes of retina tissues at different time points after ischemia reperfusion: There were no apoptotic cells in the retina tissues of the rats in normal control group. As compared with those in normal saline control group, apoptosis indexes in bFGF group were significantly decreased at ischemia 1 hour and reperfusion 1, 6, 12, 24, 48and 72 hours, especially at the 12th, 24th and 48th hours after reperfusion (t =5.362-5.595, P ＜ 0.05). ② The change of Fas expression at different time points after ischemia reperfusion: There was hardly any Fas expression in normal control group. As compared with that in normal saline control group, Fas expression in bFGF group was significantlydecreased at ischemia 1 hour and reperfusion 1, 6, 12, 24, 48 and 72 hours, especially at the 6th, 12th and 24th hours after reperfusion (t=3.954-9.327, P ＜ 0.05). ③The changes of caspase-2 expression at different time points after ischemia reperfusion: There was no caspase-2 expression in normal control group.Compared with that in normal saline control group, the number of caspase2 positive cells in bFGF group was significantly decreased at the 6th,12th,24th, 48th and 72nd hours after ischemia for 1 hour and reperfusion (t=4.125-15.641, P ＜ 0.05).CONCLUSION: bFGF can significantly inhibit the expression of apoptosis gene Fas and caspase-2 in the ischemia and reperfusion of retina, thus reducing cellular apoptosis of ganglion cells and exerting therapeutic effects on the ischemia and reperfusion of retina.

Abdominal withdrawal reflex (AWR) test, which evaluates the behavioral response of animals through expanding the intestinal tract, is the most widely used method to assess animal's visceral sensitivity in recent years.However, as AWR experimental operation involves many factors, it''s hard to find a commonly recognized operating procedure.Through review of literature of AWR experimental measuring methods, this article summarizes the basic steps of AWR operation.Meanwhile, it scrutinizes the differences of various measuring methods in relevant factors, including expansion method and airbag method, with special operating suggestions to them.Hopefully, this article will provide an option to future researchers who will use this method to evaluate animal''s visceral sensitivity, and provide a necessary foundation for the standardization of the experimental operation.

Objective To optimize the preparation of air bag materials for abdominal withdrawal reflex test.Methods To measure the diameters of different pressue-air bags by digital vernier caliper and X ray imaging.Using the pain threshold (3 points) as a criterion to test the pressure values of different air bags in the rats with corresponding visceral pain sensitivity.Results With the increasing pressure, the changes of the diameter of round latex balloon were uniform and gentle, and could meet the pressure range used in the experiment (20~80 mmHg).The threshold of visceral pain in rats was near the nociceptive stimulus value,and would not cause irreversible damage to the rat intestinal tract.Conclusions Air bag made from round latrex ballon is an ideal tool to be used in abdominal withdrawal reflex test in rats.

Denitrification plays an important role in wastewater treatment systems for the reason that the nitrate or nitrite was reduced, and some gases such as NO, N_2O or N_2 were released. The application of denitrification in wastewater, the mechanism of denitrification, and the effect factors of denitrification were introduced in this paper. The communities of Denitrifying bacteria, and some key enzymes of denitrification were also introduced. The discovery of aerobic denitrifying bacteria, autotrophic denitrifying bacteria, and denitrifying Phosphorus-removing Bacteria were also mentioned in this paper.