Objective To investigate the feasibility and clinical application of prospective ECG-gated scan and adaptive cardio se-quence scan of dual-source CT coronary angiography.Methods 255 patients who underwent coronary CT angiography using a dual-source CT scanner were divided into two groups:group A underwent prospective scan,group B underwent retrospective scan.The two groups were further subdivided into low heart rate group and high heart rate group,recorded as A1(n=51),A2(n=89),B1(n=26), B2(n=89),respectively.Group A1 preceded with prospective ECG gated scan;group A2 performed with adaptive cardio sequence scan;group B1 and B2 underwent retrospective scan.All of them applied ATCM (automatic tube current modulation)technique. Effective dose was recorded.The image quality was assessed by two experienced radiologists with a four-point grading scale.Results The excellent or good image quality (score 1 and 2)of the four groups were above 95%,and no statistical differences in images scores was detected in A1 and B1 (P =0.726),A2 and B2 (P =0.079).Effective dose was significantly different in A1 and B1(P <0.001),A2 and B2 (P <0.001),and the former decreased 50% and 40% as compared with the latter.Conclusion Using prospective ECG gated scan and adaptive cardio sequence scan,assessable image quality of coronary artery can be acquired with dual source CT (heart rate<90 beast per minute),and radiation dose can be obviously reduced.

Objective To investigate the methods and techniques of simplified binding pancreaticojejunostomy for patients with periampullary malignant tumor after radical pancreatoduodenectomy (RPD). Methods From March 2005 to May 2010, 323 patients with periampullary malignant tumor received RPD at the Tongji Hospital of Huazhong University of Science and Technology, and their clinical data were retrospectively analyzed.Simplified binding pancreaticojejunostomy was applied after RPD: the distal end of pancreas was freed for 3-4 cm;a No. 6 or No. 8 silicone urinary catheter was inserted into the pancreatic duct for 4-5 cm, and the remaining urinary catheter (6-8 cm) out of the pancreatic duct was sutured to the pancreatic stump with absorbable sutures.The cutting end of the jejunum (2-3 cm) was everted, and the everted mucosa of the jejunum ( 1 cm) was injured by electrocautery, then the everted jejunum was reverted to its normal position. The cutting end of the mesentery of jejunum and its opposite side, as well as the mid-point of these two parts were sutured symmetrically with the lower and upper edges of the pancreas, and with the capsule of pancreas between them. The everted jejunum was wrapped over the pancreatic stump and sutured it to the pancreas for fixation. The cutting end of the jejunum was bound to the pancreatic stump with 1-0 absorbable suture after confirming the jejunum was completely invaginated into the pancreas. The alimentary tract was reconstructed by using Child's method. Results Simplified binding pancreaticojejunostomy was successfully completed in all patients, Pancreatic fistula was detected in one patient who was complicated with anastomotic bleeding on the third day after secondary laparotomy. The patient was discharged with catheter and spontaneously recovered one month later. Pancreatic fistula was also detected in two patients with distal bile duct carcinoma and two patients with carcinoma in the uncinate process of pancreas at postoperative day 3, 6, 8 and 11, and they were cured by expectant treatment. The incidence of pancreatic fistula was 1.5% (5/323). Conclusion Simplified binding pancreaticojejunostomy is simple, safe and feasible, and it can significantly reduce the incidence of pancreatic fistula.

Objective To analyze the value of CT and MRI in the diagnosis of intrahepatic peripheral cholangiocarcinoma (IHPCC ). Methods 32 cases of intrahepatic peripheral cholangiocarcinoma were collected and analyzed retrospectively.25 patients underwent plain and enhanced CT scan,while 18 cases underwent plain MRI and MRCP(8 of them underwent MRI dynamic enhancement scanning).6 cases underwent plain and enhanced scan of CT and MRI simultaneously.Results 32 intrahepatic lesions were found,with CT and MRI revealing all lesions.Lesions of IHPCC showed as hypo-or iso-density on the plain CT,slightly hypo-intensity on T1 WI and uneven mild hyper-intensity on T2 WI.During arterial phase of contrast-enhanced scan,18 lesions showed as marginal mild linear enhancement,3 cases with obvious enhancement and 11 cases with no enhancement.During portal phase,venous phase and delayed scan,19 lesions showed as progressive mild-to-mod-erate uneven enhancement,while 6 cases enhanced homogeneously.25 cases showed characteristic significantly delayed enhance-ment.MRCP could display satisfactory of Intra-and-Extra-hepatic bile ducts.Other signs include intrahepatic bile ducts dilation (23 cases),intrahepatic bile duct stones (6 cases),hepatic lobe atrophy (1 5 cases),and depressed liver capsula (8 cases).Conclusion Both CT and MRI are effective methods for diagnosing of intrahepatic peripheral cholangiocarcinoma.Compared with CT,MRI seems more valuable on presentation the tumor size and border,bile duct involvement,the degree of expansion and portal vein inva-sion,etc.It is more valuable to combine CT with MRI for the diagnosis of intrahepatic peripheral cholangiocarcinoma.

OBJECTIVETo explore the theory of "Fei and Dachang being interior-exteriorly related" and the pathogenesis of lung injury by observing changes of inflammatory cytokines and oxygen free radicals in ulcerative colitis (UC) rats.

METHODSTotally 50 healthy male Wistar rats were randomly divided into two groups, the normal control group and the model group, 25 rats in each group. The UC model was established by allergizing colon mucosa combined with TNBS-alcohol (50%) enema. Another 25 rats were recruited as the normal control group. At week 2 and 4 after modeling, the pathomorphological changes of the lung were observed. Furthermore, the contents of tumor necrosis factor alpha (TNF-alpha) and IL-1beta were determined by ELISA. The activities of superoxide dismutase (SOD) and malondialdehyde (MDA) were evaluated with colorimetry.

RESULTSCompared with the normal control group, the pathomorphology of the lung tissue in the model group appeared abnormal at week 2 and 4. Compared with the normal control group, levels of TNF-alpha, IL-1beta, and MDA in the lung tissue significantly increased in the model group (P < 0. 01) and the activities of SOD significantly decreased (P < 0.05, P < 0.01).

CONCLUSIONTNF-alpha, IL-1beta, SOD, and MDA might be common material bases for the large intestine involved in lung disease of UC patients, thus providing a modern scientific basis for the theory of Fei and Dachang being interior-exteriorly related.

Animals ; Colitis, Ulcerative ; diagnosis ; metabolism ; pathology ; Cytokines ; metabolism ; Interleukin-1beta ; metabolism ; Lung ; metabolism ; Male ; Malondialdehyde ; metabolism ; Medicine, Chinese Traditional ; Rats ; Rats, Wistar ; Reactive Oxygen Species ; metabolism ; Superoxide Dismutase ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

Objective To examine supine fulcrum pressurized radiograph to predict spinal flexibility in adolescent idiopathic scoliosis (AIS). Methods 1. Empirical study: put two points (A and B) on one side of the plastic stick and one point on the other side ( C), pressurize on the plastic stick when point C is in the middle of A and B, and then measure the projection shifting of point A. Repeat the pressure test when the distance between A and C doubled. Analyze the effect of increasing distance on diminishing pressure. 2.Clinical study :45 patients ( 16 males and 29 females) underwent standing anteroposterior radiograph ,fulcrum lateral flexion radiograph, supine lateral flexion radiograph. The Cobb's angles were measured and the flexibility ratio was determined on preoperative fulcrum radiograph. Results (1) If the length of A and C was 25 cm, pressurize on point C, when pressure quantitative scale number located 1 scale and 2 scale of the rule, projection shifting of point A were 5 cm and 10 cm. If the length of A and C was 50 cm, pressurize on point C, when pressure quantitative scale number located 1 scale and 2 scale of the rule, projection shifting of point A were 8 cm and 15 cm. The longer the distance, the lesser the pressure force of plastics stick. (2)The Cobb angles and curve flexibility provided by fulcrum lateral flexion radiograph had significant difference from that provided by supine lateral flexion radiograph in male group and female group. Cobb angles of male group was 28. 6°± 4. 1 °, 16. 7°± 4. 6° respectively (t= 7. 438, P ＜ 0. 01 )and curve flexibility was 47. 6% ±8. 1% ,69. 4% ± 8. 5% respectively( t = 7. 438, P ＜ 0. 01 ). Cobb angles of female group was 24.5°± 2. 7°,12. 6°±2. 4° respectively(t = 17. 540,P ＜0. 01 )and curve flexibility was 53.4% ±5.2% ,76. 0% ±4. 7% respectively(t = 17. 54, P ＜ 0. 01 ). The flexibility of spinal main curve of female patients was obviously higher than male patients. Conclusions Supine fulcrum pressurized technique can make up for the insufficiency of supine lateral flexion technique, and provide a convenient, safe, precise and useful method for evaluation of spinal flexibility in AIS.

Objective To establish a method for rapidly detecting the G-protein ?3 subunit (GNB3) 825 site single nucleotide polymorphism (SNP) and to analyse the relationship between GNB3 825 site gene SNP and obesity. Methods The real-time fluorescent PCR was employed to analyse the GNB3 825 site gene SNP of 420 samples from 21 provinces and the the frequencies of genotypes were compared with those detected by gene sequencing. GNB3 825 site genotype, body weight, body mass index (BMI) and fat content were examined from 207 subjects and the correlation between GNB3 825 site gene SNP and obesity was analysed. Results The result by real-time fluorescent PCR showed that the frequencies of 825T and 825C haploid were 46.90% and 53.10%, respectively, and the frequencies of 825TT, 825TC and 825CC genotype were 22.38%, 51.42% and 28.10%, respectively, with no other genotype detected, which was consistent with the result by gene sequencing. BMI and fat content were significantly higher in subjects with GNB3 825TT than in subjects with other genotypes. Body weight was much higher in subjects with GNB3 825TT genotype than in subjects with 825CC genotype, but not significantly different with 825CT genotype. Conclusion A new rapid method for the detection of GNB3 825 site SNP has been successfully established. There existed significant correlation between GNB3 825TT genotype and obesity.

Objective To determine the effect of iron deficiency on hemoglobin A2(HbA2) expression in patients with β-thalassemia.Methods The participants were recruited from the out-patient clinics of the Pediatrics Department and Obstetrics Department of Affiliated Hospital of Guilin Medical College and from some β-thalassemia major families.Blood samples from the participants were used for blood smear tests and hemoglobin electrophoresis and to analyze serum ferritin (SF),3 alpha-globin gene deletions,and 17 beta-globin point mutations.Results Of the 408 individuals,304 were assigned to group A (normal controls),26 to group B (iron deficiency),56 to group C (β-thalassemia),and 22 to group D (β-thalassemia combined with iron deficiency). The results for the comparison of the mean HbA2 values among pairs of groups were as follows: group A vs group B,q=5.074 7,P<0.05; group A vs group C,q=37.650 8,P<0.05; group A vs group D,q=16.043 0,P<0.05;group C vs group D,q=7.682 9,P<0.05; Group B vs group D,q=15.806 6,P<0.05. There were no significant correlation between SF and HbA2 in all 4 groups.Conclusions Iron deficiency decreased the HbA2 level in both controls and individuals with β-thalassemia. HbA2 levels decreased significantly in individuals with both β-thalassemia and iron deficiency as compared with β-thalassemia group alone. However,they remained significantly higher than both the control and iron-deficient groups. Therefore,the elevation of HbA2 could be used to diagnose β-thalassemia reliably even in the presence of iron deficiency.

Objective To investigate the relationship between the nerve growth factor ( NGF ) induced hippocampal neuroregeneration and homeobox gene Lhx 8.Methods Seventy-two SD rats were divided into control group , transected group, NGF group, transected combined with NGF group after right fimbria-fornix transection and NGF intracerebroventricular injection . Real-time PCR and Western blotting were applied to detect the gene and protein expression of Lhx8 in each group.The choline acetyltransferase ( ChAT)/Lhx8 double labeled cells in subgranular zone ( SGZ) of hippocampus in each group were detected by immunofluorescence .Results The expression of Lhx8 gene and protein in the transected , NGF group and especially in the transected combined with NGF group was obviously higher than in the control group .The number of ChAT/Lhx8 double labeled cells in the NGF group and the transected combined with NGF group was obviously more than in the control group and transected group . Conclusion The hippocampal neuroregeneration which induced by NGF intracerebroventricular injection was associated with the higher expression of Lhx8.

OBJECTIVETo observe the effects of acupuncture at "Tianshu" (ST 25) on electro-activity and mechanical motility at different phases of migrating motor complex (MMC) during jejunal digestion period in rats with detached jejunum, so as to explore the effect and mechanism of acupuncture on regulating intestinal movement.

METHODSSixteen adult SD rats were selected. Electrodes were implanted in the serous membrane of intestinal smooth muscl.e and high-sensitivity sensors of strain gauge were sutured on serosal surface, and then the rat was anesthetized and its jejunum was detached. Electro-acriviry and mechanical motility of jejunal smooth muscle were recorded simultaneously. Acupuncture was applied at "Tianshu" (ST 25) at MMC I , MMCII and MMC III, respectively, to observe its influence on electro-activity and mechanical motility.

RESULTSAt phase of MMC I, there was no obvious change of the fast wave before and after the acupuncture, while the frequency and amplitude of slow wave and mechanical motility were both significantly decreased compared with baseline (P < 0.01). At MMCII-Ill, the frequency and amplitude of fast wave, slow wave and motility were all significantly decreased compared with baseline (P < 0.01). Acupuncture at "Tianshu" (ST 25) had prohibited effects on electro-activity and mechanical motility of jejunal smooth muscle in rats with detached jejunum.

CONCLUSIONAcupuncture at "Tianshu" (ST 25) has obvious prohibited effects on electro-acrivity and mechanical motility at MMC I , MMC II and MMC III time phases in rats with detached jejunum. The possible mechanism is that acupuncture at "Tianshu" (ST 25) could prohibit jejunum movement through reflex path of skin-sympathetic.

Acupuncture Points ; Acupuncture Therapy ; Animals ; Digestion ; Electrophysiological Phenomena ; Gastrointestinal Diseases ; physiopathology ; therapy ; Humans ; Jejunum ; chemistry ; physiology ; Male ; Myoelectric Complex, Migrating ; Rats ; Rats, Sprague-Dawley

Objective: To study clinical application value of dobutamine stress echocardiography (DSE) and nitroglycerin stress single photon emission computed tomography (SPECT) for evaluation of restenosis after percutaneous coronary intervention (PCI). Methods: A total of 39 patients after PCI were examined by DSE and SPECT one week before coronary angiography (CAG). Dose incremental program of dobutamine included five levels：5μg•kg-1•min-1, 10μg• kg-1• min-1, 20μg•kg-1•min-1, 30μg•kg-1•min-1, 40μg•kg-1•min-1, and each level maintained for three minutes. Sensitivity, specificity and accuracy of DSE and SPECT were determined according to CAG examined result and examined results were compared between DSE and SPECT. Results: Compared with CAG, SPECT and DSE were no significant differences （P>0.05）in sensitivity (83.3% vs. 75.0%) and accuracy (71.8% vs. 87.2%) for evaluating restenosis after PCI, but compared with SPECT, DSE possessed higher specificity (66.7% vs. 92.6%). Conclusions: Dobutamine stress echocardiography is accurate, and its specificity is better than that of SPECT for evaluating restenosis after percutaneous coronary intervention.