Objective To clone and sequence the cDNA encoding(S)-N-methylcoclaurine-3'-hydroxylase from Coptis chinensis.Methods The cDNA,encoding(S)-N-methylcoclaurine-3'-hydroxylase,was amplified by RT-PCR with cDNA library of tender leaf as the template.Results The full-length cDNA of(S)-N-methylcoclaurine-3'-hydroxylase(named as CYP80B3) had 1 680 bp with an open reading frame encoding 488 amino acids of protein.The CYP80B3 had 95%,82%,70%,and 68% amino acid sequence homology to the sequence of(S)-N-methylcoclaurine-3'-hydroxylase from C.japonica,Thalictrum flavum,Eschscholzia californica and Papaver somniferum,respectively.The sequence was reported to the GenBank and coded as EF492879.Comparison of sequence with(S)-N-methylcoclaurine-3'-hydroxylase from C.japonica showed CYP80B3 possessed the same functional regions involved with 3'-hydroxylation of(S)-N-methylcoclaurine.Conclusion The cDNA encoding CYP80B3 from C.chinensis was cloned and reported.This work underlays the first step for exploring the pathway of benzylisoquinoline alkaloid biosynthesis and for improving the content of benzylisoquinoline alkaloid in C.chinensis.

Objective Make a scientific approach to the validity of 3D-VIBE MRI on breast tumor's evaluation.Methods 141 breast processes were examined by 3D Dynamic scanning technique with high speed and resolution, Compared with postop pathological appearance, the diagnosis of breast tumor, the ductal carcinoma in situ, their circumscriptions, and axillary lymph node metastasis were evaluated. Results The coincidence of tumor existence diagnosis was 97.2 ％(137/141). The accuracy, sensitivity and specificity of progression in duct were 69.4 ％(93/134), 75 ％(100/134), 57.1％(77/134), respectively.The accuracy,sensitivity and specificity of axillary lymph node metastasis were 92.5 ％(124/134), 53.8 ％(72/134), and 96.7 ％(129/134) respectively. Conclusion The reconstruction images through 3D Dynamic scanning technique with high speed and resolution could discover minute breast tumor and the extent of axillary lymph node metastasis around breast,and the extent of diseases in duct can also be effectively evalnated.

Objective To investigate the role of renin angiotensin system (RAS) in pathogenesis of nonalcoholic fatty liver disease (NAFLD).Methods Twenty-four Wistar rats were evenly divided into control group and model group.The rats of control group were fed with normal diet,and model group were with high-fat diet.Rats were killed at the eighth week and serum liver function,blood lipid,glucose and insulin were tested.The liver tissues were stained with HE and Picro acid-Sirius red for pathological observation.The liver tissue concentration of angiotensin Ⅱ was determined by ELISA method and the expression of TGF-β1 in liver tissue was examined by immunohistochemistry.Results After eight weeks high fat feeding,weight,liver index,liver function,blood lipids and serum insulin of model group were significantly higher than those of control group (weight:(463.50±22.72) g vs.(404.29±10.32) g; liver index:(3.75±0.21) g vs.(2.66±0.15) g; ALT:(79.8±8.6) U/L vs.(58.8±11.6) U/L; AST:(200.01±51.72) U/L vs.(150.30±37.27) U/L; total cholesterol:(3.67±0.48) mmol/L vs.(1.50±0.23) mmol/L; triglycerides:(2.06±0.40) mmol/L vs.(0.71±0.34) mmol/L; insulin:(17.37±2.89) pmol/L vs.(11.08±2.12) pmol/L),and all the differences were statistically significant (P＜0.01).The histopathological results of model group indicated liver steatosis,inflammatory reaction in part of lobule and portal area and significant fibrosis in part of liver tissue.The liver tissue angiotonin Ⅱ concentration of model group [(32.80 ± 2.81)pg/ml] was higher than that of control group [(22.83 ± 1.75) pg/ml,t =9.559,P＜0.01].The immunohistochemistry results showed that the expression of TGF-β1 of model group was obviously higher than that of control group (Z=-2.540,P =0.011 ).Spearman correlation analysis revealed that the increasing degree of angiotensin Ⅱ concentration was positively correlated with liver steatosis scores (r=0.644,P=0.002) and the expression of TGF-β1 (r=0.470,P=0.037).Conclusion The concentration of angiotensin Ⅱ and TGF-β1 increased in the livers of model rats,which indicated that RAS may participate in the pathogenesis and progress of NAFLD.

[Abatract] In order to improve the result of clinical practice for undergraduate students of clinical medicine, combined with the professional characteristics of hematology and teaching syllabus, Hematology Department in the First Affiliated Hospital of Dalian Medical University developed practi-cal teaching content and tried using a variety of teaching methods and teaching means such as multi-media aided teaching, case teaching and simulation teaching method and so on. Besides, multiple station examination was established; teaching feedback and supervision were strengthened. The prac-tice proved that the reform measures were conducive to the cultivation of medical students' practical skills and clinical thinking, which helped to speed up the transformation from the students to the role of doctors.

Objective To assess the concordance of MRI diagnosis for patients suspected of lumbar disk herniation by using Kappa statistic.Methods One hundred patients(48 males and 52 females)with lumbosaeral radicular pain,aged from 17 to 86(average 61).All patients underwent fast spin-echo T1 and T2 weighted imaging on a 3.0 T MR scanner and spine surface coil.Two radiologists(doctor A and doctor B)evaluated the lumbar disks from L3-4,L4-5.and L5-S1 in 50 out of the 100 patients independently.The presence of a bulging disk or a herniation was reported.Images were interpreted twice:once before and once after disclosure of clinical information.And disks of 52 patients out of the 100 samples were interpreted by the two radiologists independently without clinical information as well.The Kappa statistics was employed to assess the concordance of each radiologist's diagnoses as well as the observer variation of the two radiologists.Results Diagnoses before and after disclosure to clinical information were concordant in 114 disks for doctor A and in 109 for doctor B.respectively.Diagnoses before and after disclosure to clinical information were not concordant in 36 disks for doctor A and in 41 disks for doctor B,respectively.The Kappa values were 0.60±0.06 and 0.57±0.06 for doctor A and doctor B,respectively.The concordance was moderate.After disclosure to elinical information.the numbers of reported bulging disks increased significantly.by 10 and 31 for doctor A and doctor B,respectively.Without clinical information,the diagnoses of the two radiologists were concordant in 77 disks,while not concordant in 79 disks.The interobserver agreement was poor(Kappa=0.24±0.06).The diffcrence on diagenoses made between with and without clinical information mainly happened on the differential diagnosis of normal disks and bulging disks.The different,diagnoses made between with and without clinical information were on 20 disks and on 30 disks for doctor A and doctor B,respectively;that accounted for 55.6%(20/36)and 73.2%(30/41)of total variation respectively.The diagnostic difference between the 2 doctors happened mainly on differentiation of bulging disks and normal disks,which happened in 56 disks,aceountiong for 70.9%(56/79)of total variation.Conclusion Variation on diagnoses of the same radiologist or between tworadiologists was mainly caused by disagreement on bulging disks.

Objective To investigate the clinical effects of different urinary diversion regimens after minimally invasive resection of bladder cancer. Methods 127 patients with muscular infiltrating bladder cancer from January 2010 to June 2015 were enrolled in this study. According to the patients' condition, they were divided into orthotopic ileal cystectomy group (58 cases), Bricker bladder surgery group (33 cases), ureteral skin ostomy group (36 cases), then compare the clinical data, postoperative complications and quality of life of the three groups. Results There was no significant difference in the ratio of sex, the distribution of age and tumor staging among the three groups. The operation time and postoperative hospital stay in orthotopic ileal cystectomy group were longer than those in the other two groups. The operation time and postoperative hospital stay of the Bricker bladder surgery group were longer than that in ureteral skin ostomy group, the difference was statistically significant; the bleeding in orthotopic ileal cystectomy group was more than the other two groups, and in Bricker bladder surgery group was more than ureteral skin ostomy group, the difference was statistically significant. There was no significant difference in the recovery time of intestinal function among the three groups. The recovery time of intestinal function in ureteral skin ostomy group was shorter than that in the other two groups, the difference was statistically significant. There was no significant difference in the incidence of short-term complications of the three groups of patients. The incidence of long-term complications of orthotopic ileal cystectomy group was significantly higher than the other two groups, the difference was statistically significant. The social function scores, and overall health score of orthotopic ileal cystectomy group were higher than the other two groups, the difference was statistically significance. Conclusion Without external device, closer to the characteristics of physiological urination, orthotopic ileal cystectomy holds higher postoperative quality of life, and higher incidence of long-term complications. With advantages of quick recovery and less complications, ureteral skin ostomy is best for patients who can not stand for long time surgery. It should choose the appropriate surgical approach for patients according to individuals' conditions.

Objective To explore the relationship of phosphatase and tensin homology (PTEN) deleted on chromosome ten with the apoptosis of hepatic stellate cells (HSCs) in liver tissues of rats with hepatic fibrosis induced by bile stagnation.Methods Fifty adult male SD rats were randomly divided into model group (n=40) and sham operation group (n=10).The model of hepatic fibrosis was reproduced in model group by common bile duct ligation (BDL).Liver tissue of rats in model group (1,2,3 and 4 weeks after BDL) and sham operation group were obtained.PTEN expression in liver tissue was detected by immunohistochemistry.Apoptosis of HSC was determined by dual staining of terminal deoxynucleotidy transferase UTP-nick end labeling (TUNEL) and ?-SMA immunohistochemistry.Results Only a few apoptotic HSCs were found in normal livers.With the development of liver fibrosis,the expression of PTEN decreased gradually (P

Intracytoplasmic sperm injection (ICSI) is an important treatment option for male infertility at pre-sent.However, a few patients still suffer from repeated ICSI fertilization failure because their sperm is unable to activate oocytes.Artificial oocyte activation (AOA) technology can improve the fertilization rate, pregnancy rate, live birth rate, etc., but it remains unknown whether AOA has short- and long-term effect on offspring.In this article, recent literature about the effect of AOA technology on perinatal outcomes, genetics, physical development and neurological development of offspring was summarized.This paper aims to provide reference for reproductive medicine workers and pediatricians in clinical practice.

Objective To evaluate the efficacy and accuracy of hammering reverse guide wire technique for safe placement of anterior column retrograde intramedullary screw in pelvic and acetabular surgery.Methods From September 2015 to March 2018,46 patients with pelvic or/and acetabular fracture involving the anterior column were treated with hammering reverse guide wire technique for safe placement of anterior column retrograde intramedullary screw at Department of Orthopaedics,Lishui Municipal Central Hospital.They were 28 men and 18 women,aged from 21 to 85 years (mean,55.6 years).There were 34 pelvic ring fractures,9 acetabular fractures and 3 combined pelvic ring and acetabular fractures.After the anterior lateral spine of pubic tuberosity was drilled by a guide pin and drill bit as the entry point,a reverse guide wire was knocked into the bone lightly by a hammer.For each retrograde intramedullary screwing into the acetabular anterior column,we recorded operation time,fluoroscopic frequency,and attempts to establish an acceptable screw pathway by the guide pin.The accuracy of screwing and the quality of fracture reduction were evaluated by imaging examination.For each patient,we recorded fracture union time and complications.Functional recovery of the pelvis and acetabulum was assessed by postoperative physical examination at the last follow-ups.Results The operation time of retrograde intramedullary screwing for the 46 patients averaged 28.9 minutes (from 16 to 55 minutes);the fluoroscopy frequency averaged 16.3 times (from 9 to 35 times);an acceptable screw pathway was established by the first attempt in 43 of the 46 patients (93.5％) and re-established after adjustment of the guide pin in the other 3.Forty patients were followed up for an average of 15.2 months(from 6 to 36 months).Postoperative CT scan and three-dimensional reconstruction showed that all the screws had been placed safely and accurately in the acetabular anterior column.Implant loosening and fracture displacement occurred in one case and lower limb thrombosis in another.No nail breakage,fracture nonunion,incision necrosis or infection,neurovascular injury or femoral head necrosis was observed.All fractures united after an average of 14.7 weeks (from 12 to 18 weeks).According to the Majeed scoring at the last follow-ups,the pelvic and acetabular function was evaluated as excellent in 29 cases,as good in 9,and as fair in 2,giving an excellent and good rate of 95.0％.Conclusion Hammering reverse guide wire technique is an effective method for safe placement of anterior column retrograde intramedullary screw in pelvic and acetabular surgery,because it can increase accuracy of screwing and reduce intraoperative radiation,operation time and incidence of complications though it is simple.

Cardio-oncology has developed into a new subspecialty of modern cardiology, and the clinical mentors usually need to guide students to focus on this frontier field. However, there are many deficiencies in the field of cardio-oncology training in China, and there is a lack of perfect teaching and training objectives and evaluation system. In order to adapt to the goal and orientation of talent training in cardio-oncology, the First Affiliated Hospital of Dalian Medical University adopts a multi-disciplinary teaching mode. Corresponding teaching contents and training objectives are set according to the trainees at different levels of training, and various teaching methods and assessment forms are cooperated to explore and establish the training and assessment system of cardio-oncology for doctors at different levels. The system is put into practice, and the teaching effect is outstanding which has been widely recognized by teachers and students.