Objective To observe the clinical effect of the dynamic external fixation stents treatment for contour type radius dis-tal comminuted fracture .Methods A total of 74 cases of patients with the contour type radius distal comminuted fracture were se-lected as the research object and were randomly divided into the observation group and the control group .37 cases of patients in the observation group underwent the dynamic external fixation stents treatment after closed reduction ;and 37 cases of patients in the control group underwent plaster external fixation treatment after closed reduction .Then the reset and functional effect of the two groups were compared after treatment .Results The patients of two groups were followed up for 1 year .The excellent and good rate of reset score in the observation group was 91 .89% ,which was higher than that of the control group(45 .95% ) ,the compara-tive differences was statistical significance(P=0 .000 0) .The excellent and good rate of function evaluation in the observation group was 86 .49% ,which was higher than that of the control group(40 .54% ) ,the comparative differences was statistical significance (P=0 .000 1) .Conclusion The dynamic external fixation stents treatment for contour type radius distal comminuted fracture can achieve satisfactory reset and functional recovery effect .

Objective To explore the causes,prevention and treatment of postoperative respiratory failure in patients with lung cancer.Methods The clinical data of 659 patients,admitted in Changzheng Hospital from Jan.2000 to Dec.2006,with lung cancer and suffered from postoperative respiratory failure were analyzed retrospectively.Preoperative lung function,past medical history,the etiology and preventive procedures,and the treatment methods for postoperative respiratory failure were also reviewed.Results Postoperative respiratory failure was occurred in 42 of 659 cases,the incidence was 6.4%,and all the 42 cases occurred in 1 to 5 days after operation.The major etiopathogenisis of postoperative respiratory failure included respiratory infection,bronchial asthma,operative wound,postoperative incision pain,preoperative cardiopulmonary dysfunction,etc.The respiratory failure was controlled in 37 of the 42 cases by mechanical ventilation and symptomatic treatment.Two cases died of multiple organ failure,another 2 cases died of respiratory distress syndrome and 1 case died of severe respiratory tract infection,the mortality was 11.9%.The preoperative lung function indexes of patients with postoperative respiratory failure were significantly lower than that of those patients without postoperative respiratory failure(P

Objective To report the surgical treatment results of cardiac and esophageal cancer of remnant stomach. Methods From 1980 to 2002, 30 patients with cardiac and esophageal cancer of remnant stomach were treated surgically. Results Primary cardiac and esophageal carcinoma of remnant stomach developed in male patients more than females. Of 30 patients, 21(70%) underwent subtotal gastrectomy with Billroth II reconstruction at first time. The mean interval between two operations was 13.5 years. Clinical symptoms frequently included abdominal distension, pain and hemorrhage. Thirty patients received radical resection. Conclusion Cancer in remnant stomach should be suspected in patients undergoing subtotal gastrectomy 5 years and over have clinical symptoms of upper gastrointestinal tract. Early diagnose and early curative resection should be done. For cardiac cancer of remnant stomach, total gastrectomy with “P” loops and Roux-en-Y esophagojejunostomy reconstruction were recommended. This procedure have advantage in retaining enough food storage preventing reflux esophagitis and allowing resection of esophagus long enough to avoid cancer remnant. For esophageal cancer of remnant stomach, colon reconstruction after the resection of esophageal cancer is recommended.

To probe into the mechanism of c fos, c jun expression regulated by preconditioning, we observed protein kinase C (PKC) changes of c fos, c jun gene transcription in cultured cardiomyocytes affected by transient ischemic and medicine preconditioning mimicking ischemia reperfusion injury. Cultured rat cardiac myocytes were exposed to ischemia reperfusion mimicking solution after brief ischemic episodes or PMA, norepinephrine, adenosine preconditioning. Using Northern hybridization assay, we detected the gene transcription of c fos, c jun in cardiomyocytes. In mimicking ischemia the content of c fos, c jun mRNA increased significantly. Drug preconditioning induced cardiomyocyte c fos ,c jun expression in varing degrees. H 7 blocked this preconditioning effect. These results suggest that through activating PKC preconditioning induced c fos, c jun expression and PKC might play a central role in ischemic preconditioning.

To explore the causes and treatment of arrhythmia during the peri-operative period of thoracic surgery, 566 patients undergoing pulmonary surgery were included for a retrospective analysis. Among them, 121 patients were complicated by arrhythmia. With timely treatment, the arrhythmia was controlled in all patients. The causes of arrhythmia after pulmonary surgery were old age, heart and lung diseases, abnormal ECG before operation, and long operation time.

Objective To summarize and discuss the therapeutic strategies of mechanical ventilation for severe thoracic trauma complicated by acute respiratory distress syndrome (ARDS). Methods Ninely-four patients with severe thoracic trauma complicated by ARDS, in whom mechanical ventilation were instituted and multiple methods in addition to routine treatment, were analysed. Results Eight of them died, with a total mortality of 8.5%. After Jan. 1995, by using small tidal volume mechanical ventilation, the use of mechanical ventilation was maintained for 6.8?2.2 days(P

BACKGROUND: Previous researches have proved that both atrial natriuretic polypeptide (ANP) and 5-hydroxytryptamine (5-HT) exist in the same endocrine granule of enterochromaffin cell (EC). However, whether ANP may promote or inhibit synthesis and secretion of 5-HT needs to be further studied. OBJECTIVE: To investigate the effect of ANP on synthesis and secretion of 5-HT in EC of rat gastric mucosa.DESIGN: Randomized controlled animals study.SETTING: Immunology Laboratory, Chengde Medical College. MATERIALS: This study was performed at the Immunology Laboratory, Chengde Medical College from October 2004 to July 2007. Forty adult male Wistar rats were provided by the Experimental Animal Center of Chengde Medical College. The experiment was in accordance with animal ethics standards. ANP, 5-HT antibody and serum were provided by Santa Cruz Biotechnology Company, USA.METHODS: Forty rats were randomly into endocrine and exocrine groups, and rats in the two groups were sub-grouped into control and experimental groups with 10 in each group. ANP (28 μg, 14 mg/L) was directly injected into the stomach to mimic ANP luminal secretion and ANP (14 μg, 14 mg/L) was directly injected into the sublingual vein to mimic ANP endocrinal secretion. In above condition, 5-HT immunoreactive positive cell was displayed by using immunohistochemistry technique, numerical density (Nv) of endocrine granule (SG) was counted by using electron microscopic morphometry, and 5-HT level in the serum was measured by using HPLC-ECD technique. And then, the results were compared to the control group. MAIN OUTCOME MEASURES: Effects of ANP on density of 5-HT immunoreactive positive cell, numerical density (Nv) of SG and 5-HT level in the serum. RESULTS: Effect of luminal and endocrine ANP on the 5-HT secretion: The density of immunoreactive positive cell and the numerical density (Nv) of SG were significantly increased by luminal and endocrine ANP (P＜0.05), while 5-HT level in serum was significantly reduced by luminal and endocrine ANP (P＜0.05). CONCLUSION: Luminal and endocrinal ANP can inhibit 5-HT release of gastric mucosa but may not change or enhancement its synthesis in rat.

AIM: To investigate the details of age-related changes of T lymphocytes in order to seek for sensitive biomarker for immunosenesence. METHODS: Heparin anticoagulated venous blood was collected freshly from young (20-35 years) and elderly (50-75 years) volunteers and three or four color immunofluorescence staining was performed. The nucleated cells were acquired and the phenotypes of T lymphocyte subpopulations were analyzed with flow cytometry. RESULTS: There was no significant difference in percentages of pan-T (CD3 +), helper T (CD4 +) and cytotoxic (CD8 +) T subsets between young and elderly, whereas the density of CD3 molecule (MFI) on T cells in elderly group decreased significantly. It was also found that the rates of CD44 + and CD62L + T cell subsets in young group did not have statistical difference from elderly. However,the rates of CD95 + pan-T, helper T and cytotoxic T subsets of elderly group were all markedly higher than that in young group. CONCLUSIONS: The relative rates of T cell and its subsets displayed no age-related changes while the density of CD3 was down-regulated during aging in these groups investigated. Moreover, the expression percentage of CD95 (Fas) on T cells increased as aging, suggesting that it is a potential biomarker for evaluating immunosenescence.

The hydroa vacciniforme -like lymphoma is clinically manifested by rash ,fever,hepatospleno-megaly and lymphadenectasis .Pathological character showed that lymphocytes infiltrated into dermis and there were some heterocysts.Immunohistochemistory showed that Bcl -6,Bcl -2,CD3,CD8,TIA,CD4,granzyme, EBER were positive,CD56,CD20 all tested negative.The rearrangement of TCR of bone marrow cell was positive . The hydroa vacciniforme-like lymphoma is uncommon clinically ,and it is easy to misdiagnosed .The effect of tra-ditional therapy is poor ,while the allogeneic hematopoietic stem cell transplantation followed by lymphocyte and donor-derived EBV-specific cytotoxic T -lymphocyte immunotherapy is effective ,which may offer an curable therapy for HVLL.

Objective To evaluate the application of fluorescence PCR in detecting ureA gene of Helicobacter pylori(HP)in feces.Methods Fluorescence PCR was used to detect ureA gene of HP in feces from 50 patients,including 23 confirmed by gastric biopsy urease test and histological staining.Bacterium culture and serum antibody detection were also performed, and chi-square test was used to compare the sensitivity,specificity,positive predictive value and negative predictive value among three methods.Results The sensitivity,specificity,positive predictive value and negative predictive value of fluorescence PCR were 1.00,0.96,96.O%and 100.0%,while those for HP culture were 0.78,1.00,100.0%and 84.0%,and thee for serum antibody detection Was 0.96,0.74,76.O%and 95.0%.There were significant differences in sensitivity and negative predictive value between PCR and bacterium culture (X2=5.60 and 4.44,P<0.05),and significant differences in specificity and positive predictive value between PCR and serum antibody detection(X2=5.28 and 4.08,P<0.05).Conclusion ureA gene detection in feces by fluorescence PCR is of value for the diagnosis of HP infection.