Objective To evaluate the long-term results of Chiari osteotomy in the treatment of Legg-Calv?-Perthes disease for the patients of 8 years old or above and discuss the factors that influence the prognosis of this disease. Methods There were 116 hips of 103 patients of Perthes disease treated with Chiari osteotomy between June 1986 and December 2002. All patients were 8 years old or above. 72 hips of these cases acquired follow-up, the meaning follow-up duration was 97 months(range, 38-196 months). According to lateral pillar classification, 30 hips were classified as group B, 22 hips as B/C group, 20 hips as C group. There were 50 hips in male, 22 hips in female, 47 patients between 8 and 10 years old, 22 cases between 10 and 14 years old. X-ray showed 25 hips with subluxation of femoral head preoperatively. Results According to the revised Stulberg classification system: (1)31 hips had Stulberg classⅠ,Ⅱ outcome, in which B group accounted for 19 of 30 hips, the hips in group C had the worst results: of 20 hips, only 3 had a Stulberg class Ⅰ or Ⅱ outcome, the results for the hips in lateral B/C border group were intermediate between those groups B and C. 33 hips had Stulberg class Ⅲ, in which B group had 10 hips, B/C group had 11 hips, C group had 12 hips. 8 hips had Stulberg class Ⅳ or Ⅴ, B group had 1 hip, B/C group had 2 hips, C group had 5 hips. (2)All cases had a satisfied containment, no one had subluxation after Chiari osteotomy. (3)48% of male patients had a Stulberg class Ⅰor Ⅱ outcome, in contrast, only 23% of female had the comparable outcome. (4)55% of the group of 8 to 10 years old patients had a Stulberg class Ⅰ or Ⅱ outcome, in comparison with 17% from the group of 10 to 14 years old cases. Conclusion The patients older than 8 years at the onset of disease and in the lateral pillar B or C group should be treated with surgical containment, Chiari osteotomy can fulfill such task. The gender, the age of onset, especially the lateral pillar classification strongly correlate with the outcome of Perthes disease, and the latter can help us to evaluate the severity degree of the disease and the prognosis.

Objective To investigate the MR manifestations and diagnostic value in patients with choroidal fissure cyst of the brain. Methods Characteristic MR findings in 16 patients with choroidal fissure cyst were retrospectively analyzed, and the correlation between MR imaging and clinical manifestations was reviewed. Results The cysts were situated within the choroidal fissure in all cases, representing as cystic lesion with clear border, no detectable soft tissue mass in the cyst wall or adjacent area, homogenous signal intensity identical to CSF on all sequences, with the average size of 0.9 cm?1.3 cm?1.5 cm, and no associated edema. Gd-DTPA was performed in 6 cases and revealed no evidence of enhancement. Conclusion The choroidal fissure cyst of the brain is a benign and congenital developmental abnormality, and has minor clinical significance. Because of its specific anatomic location, the choroidal fissure cysts simulate intraparenchymal cystic lesions on axial images. Coronal and sagittal MR imaging can be used to delineate its extraaxial location and make the correct diagnosis, and, thus, differentiate with other cystic lesions.

Objective: To study the effects of vitamin E and selenium on apoptosis and c-Myc expression in human leukemia cells. Methods: DNA gel electrophoresis and Northern blotting hybridization were used to detect the apoptosis and the expression of c-Myc gene, respectively. Human leukemia cell line HL-60 and K562 were cultured in vitro. Results: The apoptosis of HL-60 and K562 cells were induced after being exposed to vitamin E (100 ?mol/L) and selenium (8 ?mol/L) for 24 hours, respectively. In HL-60 cell line, c-Myc mRNA was down-regulated significantly by vitamin E(100 ?mol/L),but not selenium(8 ?mol/L).In contrast, the expression of c-Myc gene was repressed by selenium(8 ?mol/L) and not by vitamin E(100 ?mol/L) in K562 cell. Conclusion: Our observations suggest that c-Myc down-regulation and induction of apoptosis by selenium and vitamin E are important pathways in repressing leukemia cell proliferation.The results suggest there are different mechanisms of repressing leukemia cell proliferation for selenium and vitamin E.

OBJECTIVE: To establish xiaochuan oral oral solution quality control method.METHODS: Three kinds of main components' contents in xiaochuan oral solution were determined by HPLC.RESULTS: The prepared oral solution was brown liquid,with identification and tests all up to the standards specified in Chinese Pharmacopeia(2005 edition).The linear ranges of guaifenesin,ephedrine hydrochloride,and aminophylline(theophylline) were 7～13 ?g?mL-1(r=0.999 9),4.55～8.45 ?g?mL-1(r=0.999 8),and 10.64～19.76 ?g?mL-1(r=0.999 9),respectively,with the average recoveries at 99.35%(RSD=0.97%),100.40%(RSD=1.02%),and 100.57%(RSD=1.08%),respectively.CONCLUSION: The established quality control method could be used for quality control of it.

Objective To prepare the flurbiprofen orally disintegrating tablets and establish the procedures of controlling the quality.Methods Flurbiprofen orally disintegrating tablets was prepared by wet granulation and it content was determined by HPLC.Results The obtained tablets were fine in the shape and smooth in the surface.Their hardness was 2 kg,the disintegrating time was about 30 s.The linear correlation was in a range of 1.0-10.0 ?g/ml,r=0.999 9.The average recovery was 99.32%,RSD=1.09%(n=7).Conclusion Our methods of flurbiprofen orally disintegrating tablets are simple and feasible in preparation and quality control.

Objective To evaluate the effect of greater trochanteric transfer for the treatment of coxa brevis in children and adolescents.Methods From August 2005 to January 2011,twenty patients (22 hips)with coxa brevis underwent greater trochanteric transfer.Among them 18 patients (20 hips) were available for evaluation,including 4 boys and 14 girls,with an average age of 11.4 years (range,7.5-15.0 years) at operation.Five cases (6 hips) were caused by Perthes disease,and 13 cases (14 hips) were caused by developmental dysplasia of hip.Four patients (4 hips) had undergone greater trochanteric epiphyseodesis ever before.All patients were fixed with tension screw after the deformity was corrected during the operation.After operation,the human plaster spica was used for 6 weeks in all patients.Results All patients were followed up for 14 to 79 months (average,31 months).At the last follow-up,fatigue or pain in the hips disappeared or improved in 13 patients.Sixteen patients had limping and positive Trendelenburg sign preoperatively,at the last follow-up 9 patients got improvement.Twelve patients (13 hips) had limitation of abduction of the hip,the average range of abduction was 25.38°±1.20°,which was improved to 45.38°±1.05° at the last follow-up.The average articulotrochanteric distance and ratio of the distance from the greater trochanter tip to femoral head center and the radius of the femoral head at the last follow-up was (17.47+3.14)mm and 2.10±0.21,respectively,there were statistical differences compared with those before operation [(-2.89±4.62) mm and 1.59±0.22,respectiovely].The average leg-length discrepancy at the last follow-up was (0.78t±0.26) cm,which had on statistical differences compared with that [(0.83 ±0.33) cm]before operation.Conclusion Greater trochanteric transfer for the treatment of coxa brevis in children and adolescents could improve the clinical symptom,recover the normal anatomy of the proximal femoral,restore the hip biomechanics environment,but could uot improve the leg-length discrepancy.

Objective To summarize the clinical experience in treatment of the Lisfranc joint injury with open reduction and internal fixation at early stage. Methods Twelve patients ( including ten males and two females at average age of 34 years) with early stage Lisfranc joint injury received open reduction and screw/wire fixation from 2005 to 2010. According to the Myerson classification, there were two patients with type A, eight with type B and two with type C. All the patients received open reduction and internal fixation with screw or Kirschner wire within 17 days after injury. The post-operative function was estimated by mid-foot scoring scale of AOFAS. X-ray and CT scan were used in radiography estimation. Results All the patients were followed up for average 33 months ( range, 6-60 months). The mean score of post-operative mid-foot scoring scale of AOFAS was 74.5 points ( range, 53-96 points), with excellent result in eight patients, good in two and fair in two. The anatomical reduction was observed in eight patients and all the patients obtained bony union according to the results of X-ray and CT scan.There was no any complication found.Conclusions Open reduction and internal fixation is a good choice for the treatment of Lisfranc joint injury at early stage. A preoperative comprehensive analysis combined with clinical X-ray and CT scan is necessary.

Objeetive To analyze the attenuation differences of left yentricular myocardium on 64-slice CT coronary artery angiography in adults.Methods of 1130 consecutive patients,119 patients (65 males,54 females,ranged from 27 to 83 years with mean age of 52 years)with no stenosis or stenosis less than 25% in the left anterior descending arteries were enrolled.The standard axial image with 3mm slice thickness just below the aorta valve was selected for measttrement.The regions of interest(0.1 cm× 0.1 cm)in posterior interventricular septum(septal P),anterior interventricular septum(septal A),apex,anterior free wall and posterior free wall of the left ventricle were selected within the myocardium and the mean CT value wag measured.A paired Student t test was used for the comparison of CT values in different areas,P value under 0.05 was considered statistically significant.Results The megn attenuafion of the apical region(69.9±15.5)HU was lower than that of septal A(91.9±15.1)HU(t=11.060,P＜0.01)and anterior free wall(79.7±16.9)HU(t=4.639,P＜0.01),the mean attenuation in septal(93.8±14.8)HU and posterior free wall(88.0±14.3)HU showed relatively higher values.The myocardial intensity attenuation presented as a U-shape in the left ventricular myoeardium. Conclusions The mean attenuation in the left ventrieular myoeardium demonstrates as U-shape during the coronary artery angiography examination in normal adults.This can be helpful for iudging the extent of myocardial infarctiotr.

Objective To investigate the clinical effects and mechanism of naloxone treatment in drowing children.Methods A total of 97 drowing children were divided into treatment group(n=45)and control group(n=52)depending on whether the naloxone was administrated.General treatment was adopted in two groups.Treatment group Was given naloxone.The clinical effects were observed and the levels of betaendorphin(β-EP)in blood plasma were measured with radioimmunoassay(RIA)before and after treatment respectively.Results The total effective rate of treatment group(93.3%,42/45)Was significantly higher than that of control group(76.9%,40/52)(P＜0.05).As compared with that of control group(65.0%,26/40),nervous system disability rate in treatment group(33.3%,14/42)decreased significantly(P＜0.01).Continuous days of poor blood circulation,abnormal respiratory rhythm,convulsion and coma in treatment group were significantly shorter than those of control group respectively(P＜0.01).The level of β-EP was significantly lower in treatment group than that of control group(t=17.1,P＜0.01).Conclusion Clinical use of naloxone in the drowing children has curative result by reducing the level of blood plasma β-EP.

Objective To establish an accurate TaqMan probe real-time quantitative PCR (qPCR)method for detection of Theiler''s-like virus of rats (TLV).Methods Primers and TaqMan probes specific to 3622~3729 nt region were designed according to the whole genomic sequence of TLV representative strain.Using a synthesized plasmid as DNA standard template, the stability, specificity, and sensitivity of the qPCR method were determined.Results In the standard curve, R2 value was 0.99 with a high specificity.The sensitivity of the real-time PCR was less than 10 copies/μL, which was 100 times higher than the ordinary PCR method.No cross reactions appeared to the other rat viruses.Conclusions The TaqMan probe qPCR method established in this study has advantages such as simple to use, high sensitivity and specificity.