Objective Discussing the clinical features, early diagnosis and therapeutic methods of aortic dissection (AD). Methods We analyzed and concluded the clinical datum of 33 AD patients in our hospital. Results The rate of male to female was 5.6 to 1 among all patients, average age 60, hypertension accounted for 81.8 percent. There were 26 patients (78.8 percent) suffered an acute pain, of who 22 patients got a pain in anterior chest.There were 22 of 26 patients diagnosed AD through echocardiography, 20 and 11 patients confirmed AD by MRI or CT respectively among all 33 patients. 13 patients had abnormal ECG, 10 ST-T segment changed, 12 left ventricular hypertrophy or hyper-voltage. Hypertension patients were treated through a infusion of nitroglycerin or nitroprusside by intervenous drop or by vein pump firstly to decend systolic blood pressure to the level of 100~120 mmHg and heart rate to 60~70 bpm,combining with the use of beta blocker, calcium antagonist and rennin- angiotensin inhibitor. 27 patients’ pain alleviated gradually even disappeared after controling their blood pressure, whose state of illness became to stable. 2 persons did the operation of aortic replacement in emergency. 6 persons died for aortic dissection broken in one week or one month. Conclusions The clinical manifestations of AD are complex, and the rate of false or leak diagnosis is high. Radiology studies including echocardiography, MRI or CT may be very important to enhance the ability of diagnosing AD early and to guide the treatment. Taking medical treatment is primary in emergency. Operating the replacement of aorta is an effective measure to treat AD.

Objective To study the effects of DMPS on ET-1 during experimental myocardial ischemia-reperfusion (I/R) injury.Methods 20 New Zealand rabbits were randomly assigned to 2 groups: I/R group and DMPS protection group with 10 in each group. The blood sample was obtained through vien at different time (5 min before ischemia, the end of the ischemia period and 0.5h, 1h, 2h, 4h, 6h after reperfusion ) in each group.The serum concentrations of ET-1 were detected with radioimmunology method. Results The levels of ET-1 of serum and cardiac tissues increased after ischemia and reperfusion, and were significant different compared with that before ischemia(P0.05).Conclusions The changes of ET-1 were significant when myocardial I/R. DMPS may effectively effect the levels of ET-1 after myocardial ischemia and during I/R injury,and have protecfion of myocardium from ischemia and reperfusion injury.

Objective To investigate the change and significance of electrocardiogram and myocardial damage index in patients with acute organophosphorus pesticide (AOPP).Methods 71 hospitalized patients in EICU with AOPP from January 2000 to June 2006 were recorded.The patients were divided into 3 groups: mild poisoning group (n=18),moderate poisoning group(n=22) and severe poisoning group (n=31).Electrocardiogram(ECG), serum creatine kinase(CK), serum creatine kinase isoenzyrne MB(CK-MB),lactate dehydrogenase(LDH) and TnI were detected,the relation between the above-mentioned indexes and the toxical degree were analyzed.Results Abnormal ECG had a rasied tendency along with increase of the poisoning degree.The incidence of Ⅱ~Ⅲ atrioventricular block, atrial premature beats, ventricular premature contraction, ventricular tachycardia and ventricular fibrillation in severe poisoning group significantly increased compared with that in mild poisoning group and moderate poisoning group(P

Objective To study the effects of DMPS on IL-1? during experimental myocardial ischemia-reperfusion(I/R)injury.Methods 30 New Zealand rabbits were randomly assigned to 3 groups:I/R group,DMPS protection group and Control group,10 in each group.The blood samples was obtained through vien at different time(5 min before ischemia,the end of the ischemia period and 0.5h,1h,2h,4h,6h after reperfusion)in each group.The serum concentrations of IL-1? were detected with radioimmunology method.Cardiac tissues samples were taken for determination of IL-1?.The ultrastructure changes of the Cardiac tissues were observed.Results The levels of IL-1? of serum and cardiac tissues increased after ischemia and reperfusion,and were significant different comparing with that before ischemia(P

Objective To explore the anti-tumor effect of 17XL strains of Plasmodium yoelii(P.y)infection on melanoma in mice. Methods B16F10 tumor cells were axillarilly injected into the right flank of 20 C57BL/6 mice to establish tumor-bearing mouse models. The next day,the mice were randomly divided into a P.y infection group and control group,10 mice each group. Each mouse of the P.y infection group was intraperitoneally injected with 1×106 red blood cells including 20% P.y infection red blood cells,and each one of the control group were intraperitoneally injected with 1×106 normal red blood cells of C57BL/6 mice. The time of tumor formation of the mice in the two groups was observed and the tumor volumes were measured. Results The time of tumor formation in the P.y infection group[(11.30 ± 0.21)d]was significantly later than that in the control group [(10.40 ± 0.22)d](P < 0.05). From the tumors could be accurately measured to the study end point,both the tumors of mice in the two groups were growing,and the tumor volumes of mice in the P.y infection group were significantly less than those in the control group at each time point(all P < 0.05). The growth rate of tumors in the P.y infection group[(71.10 ± 6.29)mm3/d]was significantly slower than that in the control group[(302.80 ± 49.94)mm3/d](P < 0.05),and the growth rates of tumors every day in the P.y infection group were significantly slower than those in the control group(all P < 0.05). Conclusion The P.y in-fection can delay the occurrence of tumor and inhibit the growth of melanoma.

Objective To clone a gametocyte specific protein Pfgdv1 of Plasmodium falciparum,express and identify re?combinant Pfgdv1 protein in vitro. Methods PCR was performed to amplify Pfgdv1 from P. falciparum DNA which was got from the patient who was infected with P. falciparum,and the PCR product was inserted into pET28a(+)vector. pET28a?Pfg?dv1 recombinant plasmid was constructed and transformed into E. coli host BL21(DE3+). IPTG was used to induce the recombi?nant Pfgdv1 protein fused with His tag,and the protein was purified by His?NTA affinity chromatography. The recombinant pro?tein was identified by SDS?PAGE and Western blotting. Results The PCR product of Pfgdv1 gene was about 1.65 kb,meeting the expectation of predicted fragment size. The recombinant protein was about 67 kDa,which could be recognized by His?Tag monoclonal antibody. Conclusion The Pfgdv1 gene of P. falciparum is successfully cloned,and the recombinant Pfgdv1 pro?tein is expressed,thereby providing an opportunity for further study on transmission blocking vaccine.

Objective To compare the CT features and pathology of pulmonary solitary fibrous tumor (SFT),to improve the diagnosis and differential diagnosis.Methods CT images and corresponding pathological results of 14 cases with pulmonary SFT were analyzed retrospectively. Results Among the 14 cases,6 were in the right lung and other 8 were in the left.The maximum diameters of tumors were ranged from 2.5 cm to 20.0 cm,and 6 cases were over 10.0 cm.All 14 cases represented as irregular solid nodule or mass,4 as unclear boundary and 1 as lobulation.Most of the cases showed heterogeneous and progressive enhancement.The light microscopy showed that tumor tissues were mainly composed of collagen fibers and spindle cells with different proliferation degrees,and 3 cases showed atypia cells.There were abundant blood vessels in the intercellular substance.Immunohistochemistry were done in 13 cases,presenting Bcl-2,CD99 and Vimentin positive expressions in all cases and CD34 expression in 9.Conclusion The CT features of pulmonary SFT are related to pathological features.CT scan is important in the localization and qualitative diagnosis of pulmonary SFT,and obvious inhomogeneous map-like and progressive enhancement should be considered for the diagnosis of SFT.

Objective: To explore prognostic factors of acute paraquat poisoning (APP) , analyze the correlation between base excess (BE) and plasma concentration of paraquat (C-PQ) and discuss BE level in evalua-tion of prognosis of acute paraquat poisoning patients. Methods: We retrospectively selected 84 APP patients who admitted to Emergency Intensive Care Unit (EICU) of our hospital from 2009.9.1 to 2015.8.31.Clinical data from 84 APP patients were analyzed. BE、C-PQ、time of gastric lavagesince ingestion、time of hemoperfusion since ingestion、severity index of paraquat poisoning (SIPP) 、white blood cell (WBC) 、percentage of neutrophils (N%) 、hemoglobin (HB) 、creatinine (Cr) 、alanine aminotransferase (ALT) 、aspartate aminotransferase (AST) 、partial pressure of oxygen (PaO₂) 、partial pressure of carbon dioxide (PaCO₂) and other laboratory parameters were measured. A total of 41 patients in non-survivors died during the 30 days after admission and 43 patients in survivors survived during the 30 days. The factors of prognosis in paraquat poisoining and the role of BE in evalu-ating prognosis was analyzed, as well as the correlation between BE and C-PQ. Results: 1.Logistic regression analyses showed BE、C-PQ、ALT、AST、Cr was of prognostic significance[odds ratio (OR) of BE: 0.511, 95%CI 0.267, 0.978; C-PQ:-=0.999, 95%CI 0.999, 1.000; both P<0.05] ; 2.The area under the receiver operating characteristic curve (ROC curve) of BE、C-PQ and prognosis were 0.775、0.927 respectively, BE≤-1.7 mmol/L was the best cut-off value, the sensitivity、specificity for predicting were 82.9%、62.8%, the evaluation value was lower to C-PQ>3 273.935 ng/ml (AUC 0.927, 78.0%、95.3%) ; 3.BE negative correlated with C-PQ[-1.100 (-4.100, -0.200) , -5.900(-8.650, -2.500) , both P<0.05]. (r=-0.4, P<0.01). Conclusion These results suggest that BE may be useful for the prediction of prognosis in PQ poisoning and BE negative correlated with C-PQ.

OBJECTIVETo investigate the effect of hemoperfusion on paraquat-Induced kidney inflammation injury of rabbit and the mechanism of it.

METHODS60 male rabbits were randomly divided into 4 groups, the normal control group (n=6, the rabbits were given NS by gavage) , blank control group (n=18, he rabbits were given 2 hours hemoperfusion once within 1 hour after given NS by gavage), paraquat poisoning group (n=18, the rabbits were given 50 mg/kg 20% paraquat solution by gavage) , hemoperfusion treatment group (n=18, the rabbits were given 2 hours hemoperfusion once within 1 hour after 20% paraquat solution espoused). The last 3 groups were divided into 3 observation time groups (1, 3, 7 day), contained 6 rabbits each group. On days 1, 3, 7 all groups rabbits were anesthetized and sacrificed, and their kidney tissues collected. The levels of NF-κB mRNA by RT-PCR, and the expression of NF-κB protein was measured by Western blotting,The expression levels of TNF-α, IL-6, iNOS measured by chemical colorimetric method to to observe inflammatory injury.

RESULTSCompared with the normal control group rabbits, there were no changes in the TNF-α, IL-6, iNOS, NF-κB mRNA and protein of blank control group (P>0.05), while the expression of TNF-α, IL-6, NF-κB mRNA and protein in the kidney tissue of PQ group and were significantly increased (P<0.05). The pathological results of kidney tissues were no abnormalities onnormal control group and blank control group.

CONCLUSIONHP significantly increase resistance to PQ-induced inflammation injury in the rabbit kidney and exert a protective effect on PQ-induced kidney injury.

Animals ; Hemoperfusion ; Inflammation ; chemically induced ; therapy ; Interleukin-6 ; metabolism ; Kidney ; drug effects ; physiopathology ; Male ; NF-kappa B ; metabolism ; Nitric Oxide Synthase Type II ; metabolism ; Paraquat ; toxicity ; RNA, Messenger ; metabolism ; Rabbits ; Tumor Necrosis Factor-alpha ; metabolism

Objective: To explore the early diagnosis, therapeutic methods and efficacy for blunt cardiac injury (BCI). Methods: All BCI patients from September 2003 to August 2018 were studied retrospectively in respect of sex, age, cause of injury, diagnostic methods, therapeutic procedures, and outcome. The patients were divided into two groups: nonoperative group (n=305) and operative group (n=43). The two groups were compared and analyzed. Results: Totally 348 BCI patients accounted for 18.3% of 1 903 patients with blunt thoracic injury (BTI), and the mortality rate was 10.1%. The main cause of injury was traffic accident with an incidence of 48.3%. The diagnostic methods included electrocardiogram (ECG), enzymes and troponin I, echocardiography, and CT scanning, or confirmed by emergency thoracatomy. In the nonoperative group, patients were mainly myocardial contusion, with a mortality rate of 6.9%. In the operative group, patients were mainly cardiac rupture and pericardial hernia, and the mortality was 32.6%. The incidence of negative ECG between the two groups was not significantly different (16.7% vs 11.6%, P>0.05). The incidence of shock and mortality in the operative group were significantly higher than those in the the nonoperative group (P<0.01). The number of death directly resulted from BCI in the operative group was greater than that in the nonoperative group (P<0.05). Conclusions For BTI patients, BCI must be highly suspected, and necessary examinations should be given. To manage myocardial contusion without surgery, it is necessary to protect the heart, alleviate edema of myocardium, and control arrhythmia with drugs. To deal with those patients requiring operation, early recognition and expeditious thoracotomy are essential.