Animals ; Cadmium ; toxicity ; Cytochrome P-450 Enzyme System ; blood ; Female ; Ovary ; drug effects ; metabolism ; Phosphoproteins ; blood ; Progesterone ; biosynthesis ; Rats ; Rats, Wistar

Objective To investigate the relationship between alexithymia and event-related potential P300 in patients with somatoform disorders.Methods Forty-two patients aged 18 to 65 years fulfilling ICD-10 diagnosis criteria for somatoform disorders were recruited as experiment group.Forty normal healthy persons were selected as control group.The Toronto alexthymia scale-20 (TAS-20) was employed to investigate the alexithymia of the subjects.P300 potentials was employed to investigate the cognitive ability of the subjects.A comparison was made between the patients and the healthy subjects.Results The latencies of N1,P2,N2 and P3 were significantly longer in patients with somatoform disorder than those in the normal controls (P ＜ 0.05 or 0.01),the amplitudes of N2 and P3 were significantly lower in the patients (P ＜ 0.05 or 0.01).The three factors scores and the total score of TAS-20 test in patients with somatoform disorder were significantly lower than those in the normal controls (P ＜ 0.05 or 0.01).There was significant correlation between the latency and the three factors scores and the total score of TAS-20 as well as between the amplitude of P300 and the three factors scores and the total score of TAS-20:the latencies of N1,P2,N2 and P3 recorded at Pz was positively correlated with the factors scores (r =0.32 ～ 0.48,P ＜ 0.05 or 0.01),and the amplitudes of N1,P2,N2 and P3 recorded at Pz was negatively correlated with theTAS-20 scores (r=-0.31 ～-0.51,P＜0.05 or0.01).Conclusions There existed significant correlation between the alexithymia and cognitive impairment in patients with somatoform disorders.Both alexithymia and event-related potential P300 can be used as a clinical evaluation index for patients with somatoform disorder.

Objective To evaluate the mutagenicity of hydrolysate of Meretrix meretrix Linnaeus soft tissue, so as to provide experimental basis for its exploitation.Methods Three mutagenicity tests were used to evaluate the mutagenic effects, including Ames test, CHL chromosome aberration assay and bone marrow micronucleus assay in mice.Results In Ames test, the revertant colonies numbers in each group were twice less than the numbers of spontaneous revertant colo-nies, five bacterial strains showed negative results with or without S9 activation, and the result of Ames test was negative. The CHL chromosome aberration assay and bone marrow micronucleus assay showed that the chromosome aberration rate and micronucleus rate of each dose group showed no significant difference compared with the negative control group, respec-tively ( P>0.05) .Conclusions Under this condition, the results show that all of the Ames test, chromosome aberration assay and bone marrow micronucleus assay are negative, and no mutagenicity is observed in the hydrolysate of Meretrix mer-etrix Linnaeus soft tissue.

OBJECTIVE:To study the analgesic and anti-inflammatory actions of essential oil extracted from Radix Angelica Sinensis METHODS:The pharmacodynamic effects were obsersed in five experimental models of inflammation and pain,including:(1)mouse auricular edema induced by xylen;(2)increased vascular permeability induced by acetic acid in mice;(3)paw edema caused by albumen in rats;(4)granuloma caused by implanted cotton ball in rats;(5) writhe reaction induced by acetic acid in mice RESULTS:Essential oil from Angelica Sinensis could distinctively inhibit the inflammatory edema caused by various inflammatory agents and reduce the times of writhe induced by acetic acid in mice CONCLUSION:Essential oil from Angelica Sinensis has analgesic effect and could not only inhibit acute inflammation but also chronic ones in animals

SUMMARY We analyzed the clinicopathological characteristics of one patient with Rhupus syndrome as-sociated nephropathy in Peking University People ’s Hospital, and reviewed the related literature .The pa-tient was a middle aged female .She developed rheumatoid arthritis first , and then manifested mild sys-temic lupus erythematosus together with positive anti-neutrophil cytoplasmic antibodies ( ANCA ) and cryoglobulinemia several years later .The renal biopsy was performed and manifested as lupus nephritis . The transmission electron microscopy revealed cryoglobulinemia associated renal damage .This report shows that the clinicopathological characteristics in patients with Rhupus syndrome associated nephropathy are complicated .The renal pathology can be used as a diagnostic tool .

Objective To investigate the effect of reserpine,an efflux pumps inhibitor,on the activities of fluoroquinolones (FQNs) against Enterococci,and the distribution of efflux pump genes emeA and its correlation with the resistance of Enterococci.To elucidate the relationship between FQN resistance in Enterococci and active efflux.Methods One hundred isolates of enterococci were identified by VITEK microbe automatic system.The antibacterial agent susceptibility tests were performed by the disc diffusion method (K-B) in accordance with the CLSI standards.The minimum inhibitory concentration (MIC) of each FQN was tested by the agar dilution method,and the MIC changes were detected after adding reserpine.The distribution of emeA in 100 isolates of Enterococci was determined by PCR.Thex2 test was used to compare the differences of statistical results.Results After reserpine was used,three-FQN resistance in Enterococci was reduced.Ciprofloxacin,gatifloxacin and levofloxacin resistance was reduced from 42％ (42/100) to 28％ (28/100),from 30％ (30/100) to 17％ (17/100),and from 33％ (33/100) to 23％ (23/100),respectively.The positive rate of emeA gene in 100 strains of Enterococci was 55％ (55/100).There were 45 positive strains(72.6％) in 62 E.faecalis and 10 positive strains (26.4％) in 38 E.faecium.The positive rate of emeA gene in the resistant strains against ciprofloxacin,gatifloxacin and levofloxacin was 73.8％ (31/42),76.7％ (23/30),75.8％ (25/33),respectively,and the positive rate of emeA gene in the susceptible strains against above 3 antibacterials were 41.4％ (24/58),45.7％ (32/70),44.8％ (30/67).Efflux pump genes emeA in resistant strains is higher than the sensitive strains,with the statistically significant difference(x2 =13.02,8.13 and 8.57,P ＜ 0.005).Conclusions Reserpine could inhibit the active efflux of in FON Enterococci and reduce the MIC for drug-resistant strains in vitro.Multidrug-resistant efflux pump gene emeA was relevant to antimicrobial drug resistance in Enterococci.

Emergencies ; Rescue Work

Objective To observe the effect of pulmonary surfactant(PS) on lung function and ventilator parameters of neonatal respiratory distress syndrome(NRDS) in the advanced stage.Methods Twenty-eight infants with NRDS were given PS in one dose by endotracheal intubation on the left side,right side,feet high with head low,and level decub respectively.The dose of PS was 100-150 mg/kg each time,each posture slow note of the drug were required 1/4,out of the straw,hand-controlled ventilation,to reduce fluid loss,with the exception of a clear airway obstruction,within 6 hours after the administration not to shoot back suction,to give mechanical ventilation after the injection.Lung function parameters were also measured:pressure of oxygen in artery[p_a(O_2)],carbon dioxide partial pressure[p_a(CO_2)],the ratio of pressure of oxygen in artery and alveolar oxygen partial pressure[a/Ap(O_2)] and oxygenation index(OI) were determined.Ventilator parameters were determined:oxygen concentration(FiO_2),oxygen peak(PIP),end-expiratory positive pressure(PEEP) and mean airway pressure(MAP) were determined.These numerical data were analyzed and compared before and after treatment with PS.Clinical manifestations,thoracic X-ray changes,survival rate and incidence rate of complications were also analyzed and compared before and after PS therapy.Results p_a(O_2),a/Ap(O_2) showed significant upgrade and OI had a decrease after PS administration in comparison with those before PS therapy.The ventilator parameters(except for PEEP) acquired were also lower after drug administration than those in before drug therapy.There were significant differences in both stages(P_a90%,respiratory sound in 24 cases enhanced,the observation of chest film after 24 h indicated that,lesions in 21 cases improved significantly,5 cases took a favorable turn.The survival rate was 85.7%.The incidence rate of complication was as follows:pneumonia was 25%,patent ductus arteriosus was 10.7%,pneumorrhagia was 7.1% and intraventricular hemorrhage was 3.6%,respectively.Conclusion Respiratory function of NRDS is significantly improved by using PS in the advanced stage,and therapeutic effect is apparent.

Objective To introduce the treatment of intraarticular calcaneal fractures with poor soft tissue using poking reduction combined with Ilizarov methods. Methods From September 2007 to September 2009,11 patients with the intraarticular calcaneal fractures were treated with poking reduction combined with Ilizarov methods,including 10 males and 1 female at average age of 33.6 years(range,21-50 years).Four patients had the left calcaneal fractures and seven with the right ones.According to Sander classification,there were seven patients with type II fractures,three with type III fractures and one with type IV fracture.The various extents of heel soft tissue injury were emerged in all the patients.Before operation,B(o)hler angle was 0°-12°(average 8°)and Gissane angle 70°-95°(average 80°).According to AO classification of close soft tissue injury,there were three patients with type IC2,six with type IC3,one with type IC5 and one with open soft tissue injury.The collapse of the articular surface was recovered by Steinmann pin which passed through the lateral calcaneal tubercle.The medial and lateral fracture fragments were corrected by using the tensed olive wires.The heighat and width were maintained by using the Ilizarov external fixation. Results The mean duration of follow-up was 13.3 months (range,6-20 months).All fractures were healed after mean duration for 8.1 weeks(range,7-10weeks).The postoperative B(o)hler angle was 20°-45°(average 33°)and Gissane angle 100°-118°(average 107°).According to Maryland Foot Score system,the result of postoperative function was excellent in seven patients,good in three and fair in one,with excellence rate of 91%. Conclusions For the intraarticular calcaneal fractures,the poking reduction combined with Ilizarov method is able to recover and maintain the normal calcaneal height and width and reduce postoperative wound infections and many other complications.specially for Sanders II or III with severe soft tissue injury in the open or closed calcaneal fractures.Master of surgical indications and operating poims can attain satisfactory clinical efficacy.

Objective To analyze the ultrasonographic appearance of thyroglossal duct cysts and thyroglossal duct ifstula, and disicuss the value of ultrasonography in the diagnosis of thyroglossal duct cysts and thyroglossal duct ifstula. Methods Totally 142 cases of surgically and pathologically conifrmed thyroglossal duct cysts and thyroglossal duct ifstula cases in Beijing Children′s Hospital Afifliated to Capital Medical University from 2005 to 2012 were retrospectively reviewed and the ultrasonographic characteristics were analyzed. Results Among 142 cases, 128 cases of thyroglossal duct cyst were diagnosed by ultrasound. The ultrasonographic manifestation generally presented as anechoic and uneven medium echo cystic masses, with posteria wall echo enhancement. Most of the cyst walls were thin, and close to the thyoid, with or without deep ifstula. If the cysts were associated with infection, the wall would be thickening and echo enhancement of the surrounding soft tissue could be seen. Cysts ranged from the root of tongue to the suprasternal fossa, mostly in midline level of the neck. Of all the 128 cases, 95 cases were single cyst, round in shape; 33 cases had irregular shape with a fistula extended deeply, 13 cysts extended to the hyoid trailing edge, 20 cases extended to the mouth lfoor. Ultrasound examination revealed ifstulas in 10 cases, which presented as a hypoechoic thin strip-like echo inside the neck soft tissue, 6 cases extended to the hyoid bone direction, 2 cases extended to the mouthlfoor, 2 cases extended to the front thyroid. The other 4 cases showed anterior hypoechoic area, without cyst or ifstula structure. Conclusions Ultrasound is valuable in detcting the size, position, internal echo of the cyst and sinus, as well as showing their relationship with the hyoid. It is an optimal choice for the diagnosis of thyroglossal cyst and thyroglossal ifstula.