Objective To explore the clinical diagnosis and treatment of multiple organ failure(MOF)in obstetrics.Methods 17 cases of MOF in obstetrics were studied retrospectively.Results Postpartum hemorrhage,severe regnancy-induced hypertension syndrome(PIH),amniotic fluid embolism,and placental abruption were the major factors leading to MOF from the 17 cases.The blood coagulation dysfunction and the renal failure were the most common organ dysfunction.8 cases died and the fatality rate was 47.06%.Conclusion The key to lowering the fatality rate of MOF is to prevent and treat the primary diseases,diagnose and treat blood coagulation dysfunction and renal failure early.

OBJECTIVETo explore the action mechanism of electroacupuncture (EA) at "Shenmen" (HT 7) and "Sanyinjiao" (SP 6) on insomnia.

METHODSThirty SD rats were randomly divided into a blank group, a model group and an EA group, 10 cases in each group. The insomnia model was made by immobilization method in the model group and EA group. After model establishment, rats in the blank group and model group were treated with fixation and no treatment was given. Rats in the EA group were treated with EA at "Shenmen" (HT 7) and "San-yinjiao" (SP 6) for 15 min, once a day for 4 days. After treatment, the level of daytime and nighttime activity, open-arm entry percentage and open-arm time percentage of elevated plus-maze test were measured; the content of noradrenaline (NE), dopamine (DA) and epinephrine (EPI) in plasma and NE, DA in thalamus and brainstem were detected by using euzymelinked immunosorbent assay method.

RESULTSCompared with the blank group, the daytime activity was increased and nighttime activity was reduced in the model group (both P<0. 05); the open-arm entry percentage and open-arm time percentage of elevated plus-maze test were both reduced in the model group (both P<0. 05); the contents of NE, DA, EPI in the plasma and NE, DA in thalamus and brainstem were increased in the model group (all P<0. 05). Compared with the model group, the daytime activity was reduced and nighttime activity was increased in the EA group (both P<0. 05); the open-arm entry percentage and open-arm time percentage of elevated plus-maze test were both increased in the EA group (both P<0. 05); the contents of NE, DA, EPI in the plasma and NE, DA in thalamus and brainstem were reduced in the EA group (all P< 0. 05).

CONCLUSIONElectroacupuncture at "Shenmen" (HT 7) and "Sanyinjiao" (SP 6) can restrain the over-activity of the sympathetic-adrenal medullary system to treat the insomnia.

Acupuncture Points ; Adrenal Medulla ; metabolism ; Animals ; Anxiety ; Disease Models, Animal ; Dopamine ; metabolism ; Electroacupuncture ; Female ; Humans ; Male ; Norepinephrine ; metabolism ; Rats ; Rats, Sprague-Dawley ; Sleep Initiation and Maintenance Disorders ; metabolism ; physiopathology ; psychology ; therapy ; Sympathetic Nervous System ; physiopathology

BACKGROUND:Whether plumbum(Pb) exposure induced learning and memory disorder in animals is correlated with the changes of the activity of protein kinase C(PKC) in the brain tissue? OBJECTIVE:To investigate the alterative rules of PKC activity in the brain tissue of rat in development stage under chronic exposure of Pb and its effects on the memory development of the mice. DESIGN:A randomized controlled study employing experimental animals as subjects. SETTING: Cellbiology Key Laboratory of the Ministry of Health,China Medical University. MATERIALS:The study was conducted in the Laboratory of Biochemistry and Molecular Biology of China Medical University. Totally 72,5- 6 weeks old Kunming mice were selected. METHODS:Lead acetate of different concentration was used to feed female mice after copulation.Fetal mice contacted Pb through breast feeding and drinking water.Fetal mice were executed separately on 1st day(P1),8th day(P8),15th day(P15),22nd day(P22), and 30th day(P30) after birth for brain tissue harvesting.PCK activity in the brain tissue of the mice exposed to Pb was detected in vitro by[γ 32P] ATP.Budding mice were exposed to lead acetate of different concentration for the observation of the effects of Pb in difference concentration on the memory of the mice through memory behavioral training and test by passive avoidance response experiments. RESULTS:PKC activity detection indicated that PKC activity in brain of Pb exposed budding mice during initial growth stage was higher than normal,while it was lower than normal during advanced stage of growth.High concentration Pb had relative stronger inhibition on PKC activity.Memory behavioral training indicated that low concentration Pb would induce elevation of memory curve in the initial stage of the development in mice but reduction of memory curve in middle and long term.The increase of Pb concentration would reduce memory curve. CONCLUSION:Pb has inhibitive effects on the development of PKC activity in brain tissue of mice:the higher the Pb concentration is, the more significant the inhibition is.Low concentration Pb seems to have stimulatory effects on memory in short period while long term exposure to Pb would induce memory inhibition.The inhibitive effect of high concentration Pb is more significant.Pb has certain correlation with PKC activity in brain tissues of budding mice and memory function.

Background and purpose:Hepatic epithelioid hemangioendothelioma (HEHE) is an extremely rare, vascularly original tumor, and would be misdiagnosed easily in the clinical and imaging characteristics. This study aimed to investigate the imaging features of HEHE and our experience in clinical diagnosis and treatment, and to provide important reference for the diagnosis and treatment of HEHE in the future.Methods:This study retrospectively analyzed clinical manifestations, imaging features, pathological characteristics and treatment effects of 5 HEHE cases confirmed by pathology at Department of Integrative Cancer, Fudan University Shanghai Cancer Center.Results:The ratio of male to female patients was 2 to 3. HEHE predominantly occurred in middle-aged female patients whose ages range from 26 to 65 (mean=45.6). Imaging features of HEHE included multifocal hepatic disease (n=2), systemic multi-center multi-tissue occurrence (n=3). The ultrasound images showed isoechoic or hypoechoic lesions with no obvious blood lfow signal in the lesions. CT plain scan showed isointensity or hypointensity, while MR unenhanced with hypointense T1 signal and hyperintense T2 signal. The density or signal was uneven. Contrast-enhanced CT and MR images showed “slow in slow out”, obvious and variable degrees of peripheral rim enhancement. High FDG uptake showed delayed imaging characteristics (PET/CT). DSA angiography showed the tumor blood vessels were slim. After transcatheter arterial chemoembolization (TACE) surgery, lipiodol deposition within the lesion was not ideal. Under the microscope, tumor cells showed epithelial differentiation; angiogenesis was also visible. Immunohistochemistry staining showed CD31 and CD34 positive in all the 5 cases. Two cases treated with TACE combined with high intensity focused ultrasound (HIFU) and/or radiofrequency ablation (RFA) had good result.Conclusion:The clinical and radio-logical characteristics of HEHE are distinctive. Currently, for patients with systemic multi-organizational multi-center lesions, TACE combined with HIFU and/or RFA might be the most effective treatment method.

Objective To investigate the role of mucosal mast cells infiltration and degranulation with nerve growth factor (NGF)in development of visceral hypersensitivity in Sprague-Dawley (SD)rats. Methods The model of visceral hypersensitivity of irritable bowel syndrome (IBS)was established in 19 neonate SD rats with intestinal stimulation (rectalballon distention)on 8th,10th and 12th postnatal days. The other 19 neonate SD rats without colonic distention were assigned to the control group.After rats grew up (six to eight weeks old),the visceral sensitivity was tested by abdominal withdrawal reflex (AWR)in 10 rats of each group.Mast cell infiltration and degranulation were observed with toluidine blue staining in colon tissue slides.The NGF level of intestinal tissues was detected by enzyme-linked immunosorbent assay (ELISA)methods in the left nine rats of each group.The culture system of dorsal root ganglias (DRG)from the neonatal rats was set up.The changes of electrophysilogical characters of DRG stimulated with NGF (100 ng/mL)for four days were recorded with patch-clamp.Paired t test was performed for comparison between groups.Results The results of AWR indicated that neonatal colonic stimulation could significantly increase visceral sensitivity after growing up.Under 20,40 and 60 mmHg (1 mmHg=0.133 kPa)distention pressure,visceral sensitivity scores of visceral hypersensitivity rats and rats of control group were 1 .00±0.50 vs 1 .67 ±0.50,1 .89 ±0.31 vs 2.89 ±0.34 and 2.89 ±0.33 vs 3.89±0.33,the differences were statistically significant (t=-2.83,-6.00 and -6.00,all P <0.05 ). The results of master cells staining in tissue slides showed colonic master cells infiltration was obvious in rats with visceral hypersensitivity,and part of mast cells were degranulation.The result of ELISA demonstrated that NGF level of visceral hypersensitivity rats was significantly higher than that of control group ((11.07±3.06)pg/mg vs (2.38 ±1.88)pg/mg,t =-6.93,P <0.05).The results of electrophysilogical tests of primary cultured DRG indicated that compared with blank control growp,the action potential threshold of neuron in NGF 100 ng/mL group significantly decreased ((-18.0±2.1 )mV vs (-29.0 ± 2.5 )mV,t = 12.26,P <0.05)and discharge frequency increased ((5 .0± 1 .4 )/800 ms vs (12.0 ± 3.2)/800 ms,t=-8.40,P <0.05 ).Meanwhile,neuron voltage-gated K+ current density remarkably decreased,most were sustained delayed rectifier K+ current (I K )decreasing ((279.0 ±48.0)pA/pF vs (203.0±39.0)pA/pF,t=6.18,P <0.05).Conclusion Colonic stimulation in neonatal rats could cause intestinal master cells infiltration and degranulation,which induced changes of neuron electrophysilogical characters and resulted in visceral hypersensitivity after growing up.

Through the analysis of Shenyang Medical College student's scientific research from 2007 to 2016, college student's scientific research has played an important role in promoting the cultivation of innovative talents, it has been an effective way that students understand the process of scientific research, cultivate scientific research ability, and that scientific research promotes teaching in university. College student's research should enhance the scientific and feasibility of the project selection, cultivate students the spirit of independent scientific research.

Objective To investigate the relationship between the expression of ITGAV and the radiosensitivity of NSCLC cells. Methods The expression of ITGAV in NSCLC and its relationship to the prognosis of patients who received radiotherapy were analyzed using bioinformatics methods. Differences in radiosensitivity between radio-resistant cells and parent cells were verified by clone formation experiment, and the protein expression of ITGAV was detected by Western blot. The transfection efficiency of si-ITGAV was determined by Western blot and qRT-PCR analyses. The best ITGAV interference sequence was selected to transfect A549R and H1299R cells. Clone formation experiment and flow cytometry were used to detect clone formation, apoptosis and cell cycle of A549R and H1299R cells. Results The expression of ITGAV in NSCLC tissues was significantly higher than that in normal tissues (P<0.05), and NSCLC patients with high ITGAV expression had poor prognosis. The clonogenic ability of the si-ITGAV group was significantly lower than that of the negative control group at 4, 6, 8Gy irradiation (all P<0.05). After 6 Gy irradiation, the apoptosis of the si-ITGAV group was increased (P_H1299R<0.0001, P_A549R=0.0002), the proportion of G₂/M phase cells to A549-siITGAV and H1299R-siITGAV cells was higher than that in the negative control group (P_H1299R<0.0001, P_A549R=0.0007). Conclusion Interfering with ITGAV expression can increase the radiosensitivity of NSCLC.

Objective To investigate the antimicrobial resistance proifle in the clinical bacterial strains isolated from Peking Union Medical College Hospital during 2014.Methods A total of 8 295 nonduplicate clinical isolates were collected. Disc diffusion test (Kirby-Bauer method) and automated systems were employed to study the antimicrobial susceptibility. The data were analyzed by using WHONET 5.6 software according to CLSI 2014 breakpoints.Results Of the 8 295 isolates, 67.4% were gram-negative, and 32.6% were gram-positive. The top 10 most frequently isolated bacteria were:E. coli(18.1%),P. aeruginosa (10.8%),K. pneumoniae (10.2%),S. aureus (9.8%),
A. baumannii(9.2%),E. faecalis (6.3%),E. faecium (4.1%), coagulase-negativeStaphylococcus (4.1%),E. cloacae (3.1%) andS. maltophilia (2.9%). Methicillin resistant strains inS. aureus (MRSA) and coagulase negativeStaphylococcus (MRCNS) accounted for average of 28.4% and 66.5%, respectively. The resistance rates of MR strains to β-lactams and other antimicrobial agents were much higher than those MS strains. Overall, 81.3% of MRSA strains were still susceptible to trimethoprim-sulfamethoxazole, while 81.1% of MRCNS strains were susceptible to rifampin. No staphylococcal strains were resistant to vancomycin, teicoplanin or linezolid. The resistance rate ofE. faecalis strains to most of the drugs tested (except chloramphenicol) was much lower than those ofE. faecium. Several strains of bothE. faecium andE. faecalis were found resistant to vancomycin and teicoplanin, which were Van-A and Van-B types based on their phenotype. No linezolid resistant enterococcal strains were found. Data showed that 90.8% ofβ-hemolyticStreptococcus strains were susceptible to penicillin. ESBLs-producing strains accounted for 54.2%, 31.0% and 28.9% inE. coli,Klebsiella spp (K. pneumoniae andK. oxytoca) andP. mirabilis, respectively.Enterobacteriaceae isolates were still highly susceptible to carbapenems. Overall, no more than 3.3% of these strains were resistant to carbapenems. A few extensively drug-resistant strains ofK. pneumoniae (1.3%, 11/842) were identiifed. The resistance rates ofP. aeruginosa to imipenem and meropenem were 17.5% and 11.8%, respectively.P. aeruginosa isolates showed the lowest resistance rate (5.9%) to amikacin. And 69.0% and 67.4% ofA. baumanniiisolates were resistant to imipenem and meropenem.A. baumannii isolates showed the lowest resistance rates to cefoperazone-sulbactam and minocycline (47.8% and 28.7%), respectively. The prevalence of extensively drug-resistant strains was 32.3% inA. baumannii and 1.8% inP. aeruginosa. The prevalence of β-lactamase inH. inlfuenzae was 33.7%. More than 93.0% ofS. pneumoniae strains were resistant to erythromycin and clindamycin.Conelusions Bacterial resistance is still increasing in this hospital, especially carbapenem resistantEnterobacteriaceae. It is necessary to take effective hospital infection control measures and use antibiotics rationally.

Objective To investigate the profile of antimicrobial resistance in clinical isolates from the patients in Peking Union Medical College Hospital during 2012.Methods A total of 6 662 nonduplicate clinical isolates were collected.Disc diffusion test or Kirby-Bauer method and automated systems were employed to study the antimicrobial resistance.The data were analyzed by WHONET 5.6 software according to CLSI 2012 breakpoints.Results Of the 6 662 bacterial strains included in this analysis, gram negative organisms and gram positive cocci accounted for 66.7% (4 446/6 662)and 33.3% (2 216/6 662),respectively. The top 10 most frequently isolated microorganisms were E.coli (17%),P .aeruginosa (11.4%),A.baumannii (11.4%), S.aureus (11.2%),K.pneumoniae (9.2%),E.faecalis (8.4%),E.faecium (4.1%),coagulase negative Staphylococcus (3.3%),E.cloacae (3.1%)and S.maltophilia (3.1%).About 39.9% of the S.aureus strains and 73.4% of the coagulase negative Staphylococcus were methicillin-resistant.No staphylococcal strains were found resistant to vancomycin,teicoplanin or linezolid.A few of vancomycin-or teicoplanin-resistant strains were identified in both E.faecium and E.faecalis.No lin-ezolid resistant strains were found.ESBLs-producing strains accounted for 53.0%,25.7% and 27.0% in E.coli,Klebsiella spp.(K.pneumoniae and K.oxytoca)and P .mirabilis, respectively.The Enterobacteriaceae strains were still highly susceptible to carbapenems. Overall, less than 2.6% of these strains were resistant to carbapenems.A few pan-re-sistant strains of K.pneumoniae (0.7%,4/615)were iden-tified.About 20.3% and 13.6% of the P .aeruginosa isolates were resistant to imipenem and meropenem,respectively.P . aeruginosa isolates showed the lowest resistance rate (7.2%)to amikacin.And 72.8% and 75.2% of A.baumannii strains were resistant to imipenem and meropenem.A.baumannii isolates showed relatively low resistance rate to cefoperazone-sulbac-tam (51.2%)and minocycline (30.2%).The prevalence of pan-resistant strains was 43.5% in A.baumannii and 1.4% in P . aeruginosa.Conclusions Bacterial resistance is still increasing,especially pan-resistant A.baumannii strains.It is mandatory to take effective measures to control hospital infections and improve rational antibiotic use.