Objective To establish and verify the animal model of sclerotic skin induced by bleomycin(Blm).Methods To establish a mouse model for scleroderma in C3H/He mice by repeated local injection of100?L of Blm(200?g/mL)everyday for3weeks.Then,the specimens of skin,lung and serum were examined.Results After3week local Blm injections,an intense dermal sclerosis was shown in C3H/He mice.Compared with the control skin,increased dermal thickness and increased collagen histo-chemical index were found(P

Objectives To study the effects of traditional Chinese herbs, Wen Yang Huo Xue Decoction (herbs of removing blood-stasis and warming the kidney-yang) and Salvia miltiorrhiza, on the animal model of sclerotic skin. Methods A mouse model for sclerotic skin was established in C3H/He mice by repeated local injections of bleomycin for 3 weeks. Wen Yang Huo Xue Decoction was given orally, and Salvia miltiorrhiza orally or intravenously, to the mouse model. The administrations started either simultaneously or after 3 weeks' injections of bleomycin. Mouse skins and lungs were examined histopathogically, and sera were tested for autoantibodies. Results The administrations of herbs, started either at the beginning or at the time sclerosis was induced, caused no significant alleviation of dermal sclerosis by the end of 5 weeks' treatment. After 8 weeks' administrations of herbs, the dermal thickness reduced and collagen histochemical index decreased significantly, especially in group Wen Yang Huo Xue Decoction was given orally and in group Salvia miltiorrhiza was given intravenously at early stage (P

Animals ; Autoantigens ; genetics ; metabolism ; physiology ; Centromere Protein A ; Chromosomal Instability ; Chromosomal Proteins, Non-Histone ; genetics ; metabolism ; physiology ; Gene Expression Regulation, Neoplastic ; Humans ; Kinetochores ; metabolism ; Mitosis ; physiology ; Rectal Neoplasms ; genetics ; metabolism ; pathology ; Spindle Apparatus ; metabolism

Objective:To determine ochratoxin A ( OTA ) in Chinese herbs by high performance liquid chromatography-tandem mass spectrometry method ( HPLC-MS/MS) . Methods: The samples were extracted by 80% methanol water solution and purified by immunoaffinity column. The chromatographic separation was carried out on a C18 column, the mobile phase was methanol-acetonitrile-0. 01 mol·L-1 ammonium acetate, and then OTA was detected by MS/MS in an ESI(-)-MRM mode. Results:The limit of detection was 0. 1 μg·kg-1 , the average recoveries ranged from 84. 8% to 91. 2%, and the relative standard deviations ( RSD) ranged from 3. 6% to 8. 1%(n=9). Conclusion:The method is accurate,sensitive and simple, and suitable for the determination of ochratoxin A in Chinese herbs.

Objective To present the surgical results of severe scoliosis treated with one stage anterior release and posterior instrumentation. Methods 36 patients of severe scoliosis received one stage anterior release and posterior correction during July 1997 to January 2003. There were 9 males and 27 females with an average age of 17.2 years, including 33 idiopathic scoliosis and 3 neurofibromatosis scoliosis. The Cobb's angles of scoliosis were from 85? to 116? with a mean of 96.2?. 18 cases were found with single thoracic curve, 7 cases double thoracic and lumbar curves, 6 cases thoracolumbar curve, 4 cases lumbar curve, and 1 case double thoracic and lumbar curves with associated lumbar curve. 20 cases had abnormal sagittal profile. Three-dimensional instrumentations such as CD (4 cases), CD-Horizon (5 cases), TSRH (10 cases) or Isola (17 cases) were used in posterior procedure after anterior release under the same anesthesia. 31 cases of this group received thoracoplasty. Results The coronal correction was achieved 48.5% on average. The sagittal profile of the spine was distinctly ameliorated. The sagittal balance was restored or maintained in 80.6% of the patients. There were no severe neurological complications, hook displacement, rod breaking and deep infection at follow-up. One case of traumatic pleurisy occurred after surgery and one pseudarthrosis at 2 years later. One patient demonstrated imbalance 11 months after surgery. Two patients presented loss of correction more than 10? at one year follow-up (5.2? on average). Conclusion The result of one stage posterior correction associated with anterior release in treatment of severe scoliosis is satisfactory. Appropriate selection of cases, detailed assessment, SEP monitoring and wake-up test during surgery are helpful to reduce severe complications. The long term results need to be followed-up.

Objective To find out if different doses of melatonin have different roles in the cause or treatment of idiopathic scoliosis, and to illuminate whether melatonin can be a substitution in the treatment of pinealectomized chickens. Methods Fifty Little-Shaoxing chickens, in which pinealectomy was performed when 3-day-old, were divided into five groups. Ten served as control group, were kept in light-dark (12h: 12h) cycle, 500 lx in daytime and 0-5 lx in nighttime after surgery. Ten served as M-5 group, were given 5 mg/kg (5 milligrams per kilogram of body weight) melatonin twice every day. Ten as M-10 group, given 10 mg/kg melatonin abdominally twice every day, ten as M-20 group, given 20 mg/kg melatonin twice every day, and ten as M-40 group, given 40 mg/kg melatonin twice every day. The light-dark (12h: 12h) cycle was the same as control group. Radiological examinations were performed on all chicken spines for scoliosis when at 3 months old. Measured of the angle of the scoliosis was taken by Cobb's technique, and the data was analyzed by statistical software. Results Overall, there was 25 chickens developed to scoliosis in all when the chickens were 3 months. The attack rate was only 56%; this rate was consistent throughout all experimental groups. In the control group, 6 chickens had obvious scoliosis, and 5 in M-5 group, 5 in M-10 group, 4 in M-20 group, and 5 in M-40 Group. And the average Cobb's angle of control group was 26.7?. There were 23.5?, 21.7?, 24.5? and 23.2? in M-5, M-10, M-20 and M-40 respectively. There was no statistical significance in the average Cobb's angle and the incidence of scoliosis among all groups. It was determined that neither the prevalence nor the pattern of the scoliosis was affected by the therapy in any of the experimental groups. Conclusion Different dose of melatonin can't reduce the rate of scoliosis in the pinealectomized chickens, and also can't prevent the development of the experimental scoliosis. The results of this study raise doubts regarding the role of melatonin in the development of scoliosis after pinealectomy in the young chicken. Melatonin acting as a vicarious therapeutic tool in the treatment of idiopathic scoliosis is premature, deserved further research.

Objective To understand the incidence of renal involvement of children with non Hodgkin′s lymphoma and to recognize its different CT findings. Methods The thoracic and abdominal plain and contrast enhanced CT of 30 cases of NHL in children were reviewed and all cases were confirmed by pathology. The changes in both pre and post chemotherapy were analysed in the 10 selected cases with renal involvement. Results CT demonstrated 6 cases of multiple masses and 1 case of multiple patchy lesions in bilateral kidneys. Two cases of single mass and 1 case of multiple masses were detected in single kidney. Conclusion The incidence of renal involvement of children with non Hodgkin′s lymphoma is relatively high. CT can clearly demonstrate the renal involvement of NHL, which is helpful for clinical stage, especially in the evaluation of the therapeutic effects. Hence, abdominal plain and contrast enhanced CT scan should be done in children with NHL.

Objective To evaluate the clinical diagnostic value and limitation of MRI and contrast enhancement MRA (CE-MRA) in congenital heart disease of children. Methods Three hundred patients with congenital heart disease underwent CE-MRA. 173 were confirmed by operation. The results of MRA and CE-MRA were compared with operation data. Results 196 (86.0%) intracardiac malformation including septal defect and valve anomaly were diagnosed correctly by MRI within 228 abnormalities which were confirmed by operation. 101 (96.2%) extracardiac malformation including great vessels stenosis and anomalous connection were diagnosed correctly by MRI and MRA within 105 abnormalities which were confirmed by operation. Conclusion MRI and CE-MRA are very accurate diagnostic method for extracardiac malformation. CE-MRA is the best sequence for congenital heart disease.

Objective To report 6 cases of congenital heart disease with high origin of coronary artery and to evaluate the imaging method for diagnosis of congenital high origin of coronary artery. Methods Six patients with congenital high origin of coronary artery underwent angiocardiography ,echocardiography ,and 2 patients also underwent magnetic resonance examination. All 6 cases were confirmed by operation. Results All 6 cases were congenital high origin of right coronary artery. Angiocardiography made correct diagnosis in all 6 cases; MRI made the correct diagnosis in 1 of the 2 cases; echocardiography made 1 correct diagnosis. Conclusion Correct diagnosis of congenital high origin of coronary artery was very important for patients with congenital heart disease. Angiocardiography was a very reliable imaging method and MRI can play an important role in preoperative diagnosis of congenital high origin of coronary artery.

[Objective]To investigate surgical strategy of lowest instrumented vertebrae(LIV)selection of anterior correction for adolescent idiopathic scoliosis,and to discuss correlation of lowest instrumented vertebrae and trunk balance.[Method]Twenty-eight patients with thoracolumbar/lumbar adolescent idiopathic scoliosis(Lenke 5 type)were treated by anterior correction and fusion with mean 1.5-year follow-up.Specific radiographic parameters such as LIV and fusion levels,disc wedging,LIV obliquity,global coronal balance were observed respectively,and correlation of disc wedging and these parameters was analyzed.[Result]The preoperative disc angle was(2.96??1.43?)and postoperative was(-3.60??1.75?).The postoperative disc wedging was most correlated with LIV obliquity.Trunk balance and LIV-CSVL distance,fusion segments,LIV obliquity were significant correlated.[Conclusion]Selection of LIV was correlated with various radiographic parameters.Short fusion was inappropriate in such conditions:big disc angle of lower end vertebrae between superior vertebrae,fewer vertebra between certain vertebrae and apex vertebrae,long distance from certain vertebrae to CSVL and lager obliquity of the vertebrae.Disc wedging distal to LIV tent to occur postoperatively if parallel disc was not involved.