Objective To investigate the possible mechanisms of teratogenesis caused by passive smoking, temporospatial changes in surface carbohydrates of the embryonic neural epithelium and the mesenchyme around it were explored. Methods The pregnant golden hamsters were randomly divided into the treated group and the control groups. In the chamber made by ourself for passive smoking experiment, the animals of the treated group were exposed to smoke from embryonic day 4 to 7, 3 times per day for 4 consecutive days. At twelve o'clock and eighteen o'clock of embryonic day 8, eight o'clock of embryonic day 9 and eight o'clock of embryonic day 10 respectively, the pregnant golden hamsters of both treated group and control group were sacrificed, the uteri were removed and embedded routinely with paraffin, sectioned transversely in series. The sections of each group were stained with immunohistochemical ABC method and concannavalin agglutinin (ConA) and ulex europaeus agglutinin (UEA) were used as molecule probes to conduct the qualitative and quantitative analysis of the fibronectin and the related surface carbohydrates of the embryonic neural epithelium and the mesenchyme around it. Results During embryonic day 8 to10 of golden hamsters fibronectin reduced(F=30.168,P

Objective To explore the expression of Bcl-2 and Bax in embryonic neuroepithelial cells in Golden hamster exposured to the teratogenic dose of alcohol. Methods The experimental pregnant golden hamsters were given ethanol through intraperitoneally injected, 5.8 g/kg body weight. The Bcl-2 and Bax expressions in neuroepithelial cells of experimental and control animals were detected with immunohistochemical and image analysis at 4,8,16,24,48 and 72 h time points after treatment. Results Bcl-2 and Bax proteins distributed in nuclear membranes and cytoplasm of the neuroepithelial cells as well as mesenchymal cells. In control groups, the expressions of these two kind proteins increased as the time passed at beginning, 16 hours after, came to the summit and then descended gradually. Compared with the control, the expressions of Bcl-2 in experimental groups were down-regulated, expressions of Bax were up-regulated except at 8 h time point. Conclusion Alcohol can induce down-regulation of the expression of Bcl-2 protein and up-regulation of the expression of bax protein, which may play a an important role in regulation of apoptosis in alcohol-induced neural tube malformation.

Objective To compare MSCT with routing X-ray, CT and appraise their applications to fractures in forensic identification. Methods366 cases which had got routing X-ray or CT examination were examined by thin slice scanning with MSCT and all of the data were processed with MPR, see-through and SSD method. Accurate diagnosis rate and misdiagnosis & underdiagnosis rate were calculated and analyzed by Chi-square test. ResultsThe accurate diagnosis rates of MSCT in nasal fracture, rib fracture, limb or joint fracture, orbital fracture and cranial fracture were higher than that of X-ray or routing CT (P0.05). The total accurate diagnosis rates of X-ray, routing CT and MSCT were 59.17%, 70.27% and 99.45%, respectively. There were significant differences (P

0.05)between left AF(238,36.62%)and right AF(220,33.85%).More HIZs(446,68.62%)were located in inferior AF than that of middle or superior AF.The motion segments from L3、4 to L5S1 were the region that the HIZ occurred frequently and it could present in single segment or multi-segment.In anterior AF,HIZs often occurred at L2、3 and/or L3、4 discs.Whereas,they usually developed at L4、5 and/or L5S1 in posterior AF. Conclusion The incidence rate of HIZ in lumbar disc is higher.Posterior and inferior AF of discs and lower motive segments have more risk of HIZs.It could develop in single motive segment or multi-segments at one time.

Objective To study the relationships of fatty liver with the waist to hip ratio (WHR),obesity,blood glucose,blood lipid,so as to guide clinical treatment.Methods A total of 5827 persons who underwent the following examination,including liver function,kidney function,blood lipids,blood glucose,and ultrasound imaging examination were divided into fatty liver suffering group and non-fatty liver suffering group.Results The incidences of WHR,diabetes,hyperlipidemia,and hyperuricemia in the fatty liver suffering group were significantly higher than those in the non-fatty liver suffers group(t =24.6,13.2,21.9,19.6,10.3,P ＜ 0.01).The incidence (44.3％) of fatty liver in males was significantly higher than that (31％) in females (x2 =33.6,P ＜ 0.01).Conclusions There was obvious correction between fatty liver and abdominal obesity.Patients with fatty liver should be given early prevention in order to prevent from the occurrence of cardiovascular events and metabolic syndrome.

Objective To determine the distribution and drug resistance of pathogens isolated from wounds in orthopedic patients.Methods Wound samples were collected from 999 orthopedic patients in the Third Hospital of Hebei Medical University during July 2010 and June 2012.Pathogens were isolated and identified.The antimicrobial susceptibility test was performed by Kirby-Bauer method.Extended spectrum β-1actamases (ESBLs) were detected by double-disk diffusion test,and methicillin-resistant Staphylococcus aureus (MRSA) was detected by cefoxitin disk diffusion test.WHONET 5.4 was used for drug resistance analysis.Results A total of 1056 strains of pathogens were isolated,of which gram-positive cocci,gramnegative organisms and fungi accounted for 69.98％ (739/1056),28.79％ (304/1056),and 1.23％(13/1056),respectively.The top 5 pathogens were Staphylococcus aureus (265.25.09％).Pseudomonas aeruginosa (245,23.20％),Acinetobacter baumannii (199,18.84％) and Escherichia coli (86,8.14％).The resistant rates of Pseudomonas aeruginosa to cefoperazone/sulbactam,ciprofloxacin,levofloxacin and piperacillin/tazobactam were 13.58％,21.25％,21.67％ and 22.45％,while the highest resistance rate was to compound sulfamethoxazole (98.04％).Acinetobacter baumannii was highly resistant to most antibacterial agents except cefoperazone/sulbactam (14.29％),and 11 out of 199 strains were pandrug resistant.Enterobacteriaceae were completely susceptible to imipenem and meropenem,and their resistance rates to cefoperazone/sulbactam,piperacillin/tazobactam and amikacin were 1.16％-28.12％.ESBLs positive rates of Escherichia coli and Klebsiella pneumoniae were 48.84％ (42/86) and 34.38％(11/32),respectively.Staphylococcus aureus were susceptible to vancomycin,teicoplanin and linezolid,but were highly resistant to ampicillin (100.00％),penicillin G (99.25％) and erythromycin (80.06％).The rate of MRSA was 41.51％ (110/265).Enterococcus were highly resistant to erythromycin,rifampin,levofloxacin,high-concentration gentamicin,minocycline and nitrofurantoin,but were susceptible to teicoplanin and linezolid,and the rate of vancomycin intermediate strain was 4.55％ (1/22).Conclusions The pathogens of wound infections in orthopedic patients were of wide variety.Staphylococcus aureus,Pseudomonas aeruginosa,Acinetobacter baumannii,Escherichia coli and Enterobacter cloacae were the most prevalent pathogens,and most strains were multi-drug resistant.

Objective To investigate the effect of Astragalus Polysaccharide on peripheral circulation myeloid derived suppressor cells (MDSC) in lung cancer and its clinical effect. Methods 100 patients with advanced non small cell lung cancer were selected and divided into 2 groups, 50 cases in the control group treated with chemotherapy aalone, 50 cases in the experiment group received injection of Astragalus Polysaccharide on the basis of the control group, peripheral blood MDSC levels, peripheral blood T lymphocyte subsets levels, serum ARG I activity, TNF-α, IL-6 levels, the clinical effect and incidence of adverse reactions were compared after the treatment. Results Compared with the control group, peripheral blood levels of MDSC (Lin-HLA DR-\CD33+\CD11b+) was lower after treatment in the experiment group , peripheral blood levels of CD3+, CD4+T lymphocytes and CD4+/CD8+ were higher, and CD8+T lymphocytes level was lower after treatment, serum levels of ARG I activity, TNF-α, IL-6 levels were lower after treatment, (P<0.05) , the total effective rate in the control group(42.0%)was lower than the experiment group(64.0%), (P<0.05), the incidence of gastrointestinal reaction(40/24), 3 ~ 4 degree of leukocyte reduction(26/12), liver function damage(19/9), renal damage(17/7) in the control group were higher than the experiment group (P<0.05). Conclusion Astragalus Polysaccharide can significantly reduce the peripheral circulation MDSC (Lin-HLA DR-\CD33+\CD11b+) level in patients with lung cancer, improve T lymphocyte immune function, inhibit the activity of serum ARG I, reduce the level of TNF-αand IL-6, effectively improve the clinical efficacy, and reduce the toxic and side effects of chemotherapy.

BACKGROUND:Studies have shown that dibutyl phthalate has certain toxicity to the reproductive system of male animals.
OBJECTIVE:To investigate the effects of dibutyl phthalate on secretion of rat ovarian granulose cells. METHODS:Ovarian granulosa cells from 25-day-old female Sprague-Dawley rats were cultured in vitro and exposed to different concentrations of dibutyl phthalate (0, 5, 20, 80μmol/L) for 24 hours. Estradiol and progesterone in ovarian granulosa cells were measured by the method of radio-immunity. Expression of the cytochrome P450aromatase and P450 side chain cleavage enzyme mRNA in granulosa cells were examined by real-time PCR.
RESULTS AND CONCLUSION:The levels of estradiol and progesterone in granulosa cells decreased after exposure to dibutyl phthalate. With the increase of the dibutyl phthalate concentration, the expression of
P450arom and P450scc mRNA decreased gradual y. Dibutyl phthalate could induce reproductive dysfunction and toxicity to female rats.

Objective To investigate the distribution and drug resistance of bacterial pathogens isolated from orthopedic wounds.Methods Data of bacterial strains isolated trom orthopedic wounds in the Third Hospital of Hebei Medical University from January 2008 to December 2012 were retrospectively analyzed.Strains were identified by using French bioMérieux Vitek32 identification system,and the drug susceptibility was tested by Kirby-Bauer method.Chi-square test for linear trend was performed to reveal the changes of distribution and drug resistance of the strains.Results A total of 2 456 bacterial strains were isolated,vith 1 652 (67.26％) gram-negative bacilli,777 (31.64％) gram-positive cocci,26 (1.06％) fungi,and 1 (0.04％) gram-positive bacillus.The top five pathogens were Staphylococcus aureus (666 strains,27.12％),Pseudomonas aeruginosa (606 strains,24.67％),Acinetobacter baumannii (355 strains,14.45％),Escherichia coli(188 strains,7.65％) and Enterobacter cloacae (187 strains,7.61％).The positive rate of Acinetobacter baumannii was on the rise during 2008 and 2012 (x2 =35.266,P ＜ 0.0l).The rates of pan-drug resistant strains in Acinetobacter baumannii and Pseudomonas aeruginosa were 6.20％ (22/355) and 0.17％ (1/606),respectively.The rates of extended-spectrum β-lactamases positive strains in Escherichia coli and Klebsiella pneumoniae were 39.89％ (75/188) and 29.23％ (19/65),respectively.The rates of methicillin-resistant strains in Staphylococcus aureus and coagulasenegative Staphylococcus were 40.69％ (271/666) and 52.38％ (22/42),respectively.The rate of vancomycin-intermediate strains in Enterococci was 3.70％ (2/54).The positive rate of methicillin-resistant &aphylococcus aureus was on the rise during 2008 and 2012 (x2 =18.317,P ＜ 0.01).Staphylococcus aureus were sensitive to teicoplanin,vancomycin and linezolid; Resistance rates to rifampicin and amikacin were 11.29％-33.33％; Resistance rates to penicillins and erythromycin were 76.80％-100.00％; Resistance rates to cefazolin,cefuroxime,cefoxitin,amikacin and levofloxacin were on the rise (P ＜ 0.05) ; And resistance rates to sulfamethoxazole (28.11％-48.35％) were on the decline in the same period (P ＜ 0.01).Resistance rates of Pseudomonas aeruginosa to imipenem,meropenem and sulfamethoxazole were on the rise (P ＜ 0.05) ; Resistance rates to ciprofloxacin,levofloxacin,amikacin,gentamicin and piperacillin/ tazobactam were on the decline (P ＜ 0.05) ; Resistance rates to cefoperazone/sulbactam were the lowest (9.15％-20.51％).Resistance rates of Acinetobacter baumannii to imipenem,meropenem,levofloxacin,piperacillin/tazobactam,sulfamethoxazole were on the rise (P ＜ 0.01); Resistance rates to cefoperazone/ sulbactam were the lowest (11.86％-19.70％).Escherichia coli and Enterobacter cloacae were sensitive to imipenem and meropenem,and the resistance rates to cefoperazone/sulbactam and piperacillin/tazobactam were low (0-14.29％); Resistance rates of Escherichia coli to piperacillin,cefepime,amikacin,levofloxacin,cefoperazone/sulbactam were on the decline (P ＜ 0.05) ; Resistance rates of Enterobacter cloacae to cefoxitin were on the rise (P ＜ 0.01),while the resistance rates to piperacillin,ceftazidime,cefoperazone,ceftriaxone,levofloxacin were on the decline (P ＜ 0.05).Conclusion During 2008 and 2012,the predominant bacterial pathogens of orthopedic wound in patients of the Third Hospital of Hebei Medical University are Staphylococcus aureus,Pseudomonas aeruginosa,Acinetobacter baumannii,Escherichia coli and Enterobacter cloacae,and most strains are multiple drug resistant.

Objective: To investigate the influence of esculentoside A（EsA） on production of IL-1 and TNF by rabbit synovial cells induced by LPS. Methods: levels of IL-1 and TNF in the supernatant of rabbit synovial cell were determined by examining proliferation of thymic cells and by bioassay L929 cells as target cells, respectively. Results: EsA in 5-40 μg/ml could significantly inhibit the production of IL-1 and TNF from rabbit synovial cells induced by LPS. Conclusion: EsA can inhibit the production of IL-1 and TNF from synovial cells. It suggests that EsA may play a role in improving the rheumatoid arthritis.