Objective To evaluate the effect of abdominal fat ratio (AFR,abdominal fat volume to total abdominal volume)at the umbilical level on hepatic CT enhancement in humans.Methods We analyzed data in 87 patients (40 women and 47 men)by Pearson correlation and linear regression analysis to assess the association of patient age and AFR with adjusted maximal hepatic enhancement (aMHE,maximal hepatic enhancement divided by the dose of iodine divided by body weight)by sex.Results aMHE was positively correlated with AFR for both men and women (r=0.48 and 0.46,respectively,both P <0.01)but not patient age.Conclusion Pa-tients with more abdominal fat seem to require relatively less amount of contrast media to get the CT enhanced degree of liver similar to those with less fat.

Blood Group Incompatibility ; complications ; Erythroblastosis, Fetal ; etiology ; Humans ; Infant, Newborn ; MNSs Blood-Group System ; immunology ; Male

Objective To evaluate clinical effectiveness and influence factors in the treatment of benign and malignant esophageal stenosis by placing esophageal stent. Methods A series of this research comprised of 29 cases with esophageal cancer, 10 cardiac carcinoma, 5 cardiac achalasia, 6 benign esophageal stricture after operation. The lengths of lesion ranged from 2 to 14 cm in length with mean of 7.3 cm. Fistuli were found among malignant esophageal stenosis in 6 cases. According to the dysphagia scores, 12 cases were designated as Ⅰ grade, 31 with Ⅱ, and 14 with Ⅲ. 46 cases of malignancy were undertaken radiation therapy combined with transcatheter arterial chemotherapy from 15 to 30 days after stent placement. Results 62 stents were placed in 57 cases (52 domestic stents, 10 Boston ultraflex), including 4 cases with 2 stents being once placed, 1 case with second time stent placement because of restenosis 4 month later. All stents were placed successfully without serious complications, such as esophageal perforation, massive hemorrhage. 5 cases of cardiac achalasia and 6 cases of benign esophageal stricture are still alive now. The survival rates of 6, 12, 24 and 36 months in 46 malignant cases, were 67.4%(31/46), 43.5%(20/46), 26.1%(12/46), and 19.6%(9/46) respectively. Dysphagia were relieved significantly form 7 to 15 days after stent placement. Conclusions Esophageal stent placement combined with radiation therapy and transcatheter arterial chemotherapy could improve patient life qualities and survival rates significantly in malignant stricture. The effects on benign esophageal stricture by stent placement are comparable with that of surgical treatment.

A L-histidine producing mutant was derived from Corynebacterium glutamicum HZ4221(TRA R DCP R AMT R histidase - )by means of mutagenesis with N-methy-N′-nitro- N-nitrosoguanidine(NTG).Contrast to original strain,the amount of histidine accumulation reached to a level of 5.31g/L in a medium containing 80g/Lglucose and 30g/L ammonium sulfate after cultured for 72 hours; the transketolase activity reduced to a degree of 15.7%.The utilization of the carbon sources,genetic stability,effect of metal ions were also been investigated in this paper.

Objective To investigate the effect of rosiglitazone (ROS),a peroxisome poliferator- activated receptor (PPAR)?ligand,combined with all-trans retinoic acid (ATRA) on anti-angiogenesis of transplanted gastric cancer in nude mice,and to explore the mechanism of anti-angiogenesis prelimina- rily.Methods The model of xenograft tumor in nude mice were established by inoculating human gastric cancer cells line MGC803 (lower differentiated) into the back of nude mice subcutaneously.The cancer- bearing nude mice were divided randomly into 5 groups:group 1 (n=6) with no treatment;ROS treat- ment (group 2,n=6),ROS combined ATRA treatment including:low dose treatment (group 3,n= 6),moderate dose treatment (group 4,n=6) and high dose treatment (group 5,n=6).After treated for forty days,the volume change of tumor and tumor inhibition rates were observed.The expression of CD34,vascular endothelial growth factor (VEGF) in grafts were detected by immunohistochemical and calculated the difference of MVD.The mRNA expression levels of VEGF,HIF-l?were detected by RT- PCR assay accordingly.Results①The volume of tumor was significantly decreased in ROS treatment group compared with group 1 (P＜0.01).The tumor inhibition rates of group 2 were similar to group 3 (P＞0.05).With the increasing of the dose of ROS the tumor inhibition rates were increased.They were dose-dependent in specified dose-range.②ROS could inhibit angiogenesis of xenograft tumor and depress expression of mRNA of VEGF and HIF-l?.When ROS combined with ATRA,the increasing of dose of ROS,inhibiting angiogenesis of tumor and depressing expression of mRNA of VEGF and HIF-l?were found (P＜0.05).Conclusion ROS (25 mg?kg?2 d~(-1)) can inhibit the growth of tumor,and ROS combined with ATRA can further inhibit the growth of tumor,which may be through the path of PTEN by inhibiting the angiogenesis of tumor

Objective To estimate the effection of orbital blowout fracture when Medpor was implanted to restore it. Methods The plastic operations on 15 patients with orbital blowout fracture were reviewed and studied. Results On discharge from the hospital, function and outline form was improved greatly in all cases. Conclusion Early diagnosis, early treatment and early movement training after surgery were emphasized. Medpor is one of the preferred material on reparing orbital blowout fracture.

Objective Compare the difference on vision,vision field between treating on central retinal artery with compound anisodine retrobulbar injection associate with emporat artery side injection and emporal artery side injection simply.Estimate the curative effect of the two ways on the disease.Methods Observe the patients'vision,vison field and cross-check,analyze the results who have central retinal artery and there are 20 who treated by compound anisodine retrobulbar injection associate with emporal artery side injection together with 20 who treated by emporal artery side injection purely.Results The therapeutics that is compound anisodine retrobulbar injection associate with emporal artery side injection is excellence to 10,effective to 6 and ineffective to 4;the therapeutics that is arter3,side injection purely is excellence to 5,effective to 5 and ineffective to 10.The two therapeuticses has significant difference on improving vision and ameliorating vision field.Conclusion It's quite effective to treat central retinal artery occlusion by compound anisodine retrobulbar injection associate with emporal artery side injection.

Objective To explore the role of hypoxia inducible factor 1α(HIF-1α)-mediated signaling pathway in angiotensin Ⅱ(Ang Ⅱ)induced renal interstitial fibrosis. Methods Renal tubular epithelial cells were cultured and treated with different concentrations (10-9-10-6 mol/L)of Ang Ⅱ for 24 h and 48 h.Real-time quantitative PCR and Western blotting were preformed to detect the mRNA and protein expressions of HIF-1α,prolyl hydroxylase 2 (PHD2)and tissue inhibitor of metalloproteinase 1 (TIMP-1)in renal tubular epithelial cells. Results HIF-1αmRNA level was increased with Ang Ⅱ treatment in a concentration dependent manner.When cells were treated with Ang Ⅱ concentration at 10-7mol/L for 24 h,the mRNA level was markedly increased by 166%.Furthermore,by real-time quantitative PCR and Western blotting,compared with the control group,Ang Ⅱincreased the mRNA and protein levels of HIF-1α and TIMP-1 (P<0.05,respectively),while the mRNA and protein levels of PHD2 were decreased markedly (P<0.05,respectively)in renal tubular epithelial cells.Conclusion Ang Ⅱ reduces HIF-1αdegradation in renal tubular epithelial cells probably by reducing the expression of PHD2,which increases the expressions of HIF-1α and TIMP-1 involved in renal interstitial fibrosis.

Adenocarcinoma ; diagnosis ; pathology ; Adult ; Aged ; Bronchoscopy ; methods ; Cooking ; Humans ; Lung Neoplasms ; diagnosis ; pathology ; Male ; Middle Aged ; Occupational Exposure ; Retrospective Studies

Objective To discuss on the relationship among innovation,scientific nature and ethics in medical articles,in order to improve the academic quality of manuscripts.Methods Take Chinese Journal of Radiological Medicine and Protection as an example,innovation was emphasized in the field of radiation diagnosis and treatment,while the cases lack of innovation were pointed.However,the lessons from many papers showed that those papers only with innovation would be rejected because of defect in scientific nature and ethics.Results Innovation is the soul of the paper,and the scientific and ethical nature is the foundation and premise of innovation.Conclusions While the innovation is emphasized,the scientific nature and ethics of the thesis should be not ignored.These three aspects are integral.