Objective To study the subchronic toxicity of fipronil in rats and to protect and improve the environment and human health. Methods 80 SD rats were randomly divided into four groups,20 in each groups (10 males and 10 females). The rats were treated with fipronil by gavage,in doses of 25,10,4,0 mg/kg,once a day,10 ml/(kg?d),for 90 consecutive days. The test method was according to GB15670—1995. Results The acute toxicity symptom of rats in high dose showed that cachexia,dull,hair floppy. No acute toxicity symptoms were found in the moderate and low dose groups. No significant difference was found in the serum and urine routine test indexes. Liver index increased significantly in the high dose(25 mg/kg)and moderate dose(10 mg/kg) exposed rats. The activity of aspartateaminotransferase (AST) in the serum increased only in male rats. No significant changes in indicators were found in the low exposed rats. The histopathologic examination showed that in the high and moderate dose groups,in the liver,spot and focus necrosis,the hepatocytes around central veins became bigger and cloudy swelling,some hepatocytes presented ballooning degeneration. No obvious pathological change was seen in the low dose group. Conclusion Fipronil has a toxicity to the liver,based on 90 day oral toxic test in rats,no-observed adverse effect level (NOAEL) is 4 mg/(kg?d).

To introduce Prof. T ian Cong-huo’s commonly used acupuncture methods and their clinical application, in order to summarize the famous doctor’s experience, promote the experience inheritance of Chinese acupuncture, and enhance the therapeutic effect of acupuncture.

ObjectiveTo evaluate the risk of colorectal neoplasia among patients with gastric or duodenal adenoma.MethodsWe retrospectively reviewed 39 patients with gastric or duodenal adenomas between 2007 and 2011 as the study group.A total of 78 patients without upper gastrointestinal adenomas who underwent colonoscopy were included as a control group.Colonoscopic findings were compared between the two groups.ResultsPositive finding rate of colorectal neoplasia in study group was 51.3％ (20/39),with adenomas in 38.5％ (15/39) and cancer in 12.8％ (5/39),which were all significantly higher than those of the control group,14.1％ (11/78) ( P ＜ 0.001 ),12.8％ ( 10/78 ) ( P ＜ 0.05 ) and 1.3％ ( 1/78 ) ( P ＜ 0.05),respectively.The results were similar when upper digestive tract was further divided into stomach and duodenum(50.0％ vs.12.5％ and 52.2％ vs.15.2％ ).ConclusionPatients with gastric or duodenal adenomas are at a significantly higher risk for colorectal neoplasia.Colonoscopy should be recommended for these patients.

Objective: To examine the reliability and validity of the Chinese Morphed Emotional Expressions Recognition Test.Methods: The Chinese Morphed Emotional Expressions Recognition Test and the Calder Morphed Emotional Expressions Recognition Test were administered to 57 college students.39 college students were administered the Chinese Morphed Emotional Expressions Recognition Test twice.Results: The internal consistency and test-retest reliability were 0.728 and 0.715(P

Objective To investigate the in vitro effect of wild-type PTEN gene transfection on the growth of human colon cancer cell lines. Methods With liposome transduction technique,the retrovirus vector pBp-PTEN,which contains wild-type PTEN gene segment and pBabe-puro,was transfected into Lovo,one of the PTEN-deficient human colorectal carcinoma cell lines.After identification by Western blotting,cell growth,cell cycle and apoptosis before and after transfection were studied. Results It was indicated by the cell growth curve that after transfection the curve of the transfection group exhibited a mild tendency with no obvious logarithmic growth phase,and the growth velocity was significantly lower than that of the control group(P

In order to explore the method to prepare hypoxia UW solution and the stability and preservation of hypoxia UW solution, UW solution was purged by argon or air for 15 min or 60 at a flow rate of 0.8 or 2 L/min, and the oxygen partial pressure of UW solution was detected. The hypoxia UW solution was exposed to the air or sealed up to preserve by using different methods, and the changes of oxygen partial pressure was tested. The results showed that oxygen partial presure of 50 mL UW solution, purged by argon for 15 min at a flow rate of 2 L/min, was declined from 242+/-6 mmHg to 83+/-10 mmHg. After exposure to the air, oxygen partial pressure of hypoxia UW solution was gradually increased to 160+/-7 mmHg at 48 h. After sealed up by the centrifuge tube and plastic bad filled with argon, oxygen partial pressure of hypoxia UW solution was stable, about 88+/-13 mmHg at 72 h. It was concluded that oxygen of UW solution could be purged by argon efficiently. Sealed up by the centrifuge tube and plastic bag filled with argon, oxygen partial pressure of UW solution could be stabilized.
Adenosine/chemical synthesis ; Allopurinol/chemical synthesis ; Anoxia ; Glutathione/chemical synthesis ; Insulin/chemical synthesis ; Organ Preservation/*methods ; Organ Preservation Solutions/*chemical synthesis ; Oxygen/*analysis ; Partial Pressure ; Raffinose/chemical synthesis

Background Clinical researches showed that antimicrobial-resistance of bacterium is gradually serious.It is very important to master pathogen distribution and antimicrobial susceptibility after eye surgery.Objective This study was to investigate the distribution and drug sensitivity of pathogenic bacteria from ocular operative infection in 3-year duration to provide a reference for reasonable selection of antibiotics.Methods Sixtyfive positive specimens were obtained from 65 patients due to postoperative infection in Department of Ophthalmology of Shenzhou Hospital and Shengjing Hospital from 2009 January through 2011 December.The pathogenic bacteria were isolated and then the drug sensitivity test of conventional antibiotics was performed.Results Among the 65 ophthalmic specimens,35 strains of Gram-positive bacteria were isolated with the constituent ratio 53.8％,and 15 strains of Gram-negative bacteria accounted for 23.1％.Fungus was found in 15 cases with the constituent ratio 23.1％.Staphylococcus epidermidis accounted for 42.9％ in Gram-positive bacteria,and Pseudomonas aeruginosa accounted for 33.3％ in Gram-negative bacteria.Aspergillus was the main component of fungus,which accounted for 60.0％ of the proportion 3 strains of methicillin-resistant Staphylococcus aureus (MRSA) in 8 strains of Staphylococcus aureus,but no vancomycin-resistant Enterococcus (VRE) and vancomycin-resistant Staphylococcus (VRS) were seen.The in vitro drug sensitivity test showed that the main Gram-positive bacteria,Staphylococcus epidermidis and Staphylococcus aureus,were sensitive to linezolid,vancomycin,levofloxacin and ciprofloxacin with the sensitive rates ＞50.0％,and these bacteria were lowly sensitive to penicillin and erythromycin with the sensitive rates ≤30.0％.Pseudomonas aeruginosa appeared to be the main Gram-negative bacteria,showing a sensitive rate ≥ 80.0％ to tobramycin,amikacin,ceftazidime,cefepime,cefoperazone/sulbactam,piperacillin/tazobactam,imipenem and meropenem.Conclusions Staphylococcus epidermidis,Staphylococcus aureus,Pseudomonas aeruginosa and Aspergillus are primary pathogens in ocular infection after operation.Antibiotics such as penicillin,erythromycin,levofloxacin,cefotaxime seem to be relatively high resistant to eye infection.To choose sensitive antibiotics timely and reasonably is a key to the prevention and control of ocular infection after operation.

For this cross-sectional study , the clinical data of 1979 patients at our emergency department from October 2012 to June 2013 were collected and analyzed.The relevant data included gender , age,visit time,complaints,signs and diagnosis.The ratio of female:male was 1 to 0.71.The age groups of 50-59 and 70-79 years were the most.The peak of visit time was 8-10 am accounting for 21.26%.The common complaints included dizziness ,headache and paralysis.The most frequent emergency diseases were acute cerebral vascular accident , dizziness or vertigo due to various diseases , headache and peripheral neuropathy.Ischemis stroke was the top one disease in elders.Conclusion The middle-aged and elderly are the main populations at our emergency department.And cerebrovascular disease is a common disease.

Objective To discuss the surgical method of resection of petroclival tumors used temporal base transtentorial approach.Methods Analyzed 26 cases of petroclival tumors.All of them were surgically treated under intraoperative neurophysiological monitoring by temporal base transtentorial approach.Firstly the supratentorial part of tumors were resected by pieces,and then the tentorium was cut open,in order to resect residue of the subtentorial part of tumors.This surgical maneuver was applied to reduce the retraction to surrounding vessels,nerves and brain stem,as well to protect important structures and to finally achieve radical removal of the tumors.The efficacy and complications were observed.Results Among 26 cases,19 cases (73.1％,19/26) achieved total removal,5 cases (19.2 ％,5/26) achieved subtotal removal and 2 cases (7.7％,2/26) achieved great partial removal.There was no surgery-related death.Eleven cases suffered from partial neurological deficit.All cases were followed up for 3 months to 4 years,3 cases underwent complete recovery,4 cases underwent partial recovery,and 4 cases underwent permanent deficit.Conclusions Using temporal base transtentorial approach to resect petroclival tumors is convenient,applicable,safe and with minimal injury and with high proportionality of total resection.Under intraoperative neurophysiological monitoring,this approach may be an ideal choice for surgical treatment of these tumors.

In recent years , with the development of error theory and the requirements of the international accreditation bodies , the quality indicators ( QIs) have become one of the important tools in the laboratory quality management .To explore the evolution and origin of QIs , the status and the future of QIs will be helpful for us to understand and to use the QIs .