Equipment Design ; Humans ; Radiography ; instrumentation ; Technology, Radiologic ; X-Rays

OBJECTIVETo analyze HOXD13 gene in polydactyly in dispersion type of Fujian Han population in order to know whether there is mutation in HOXD13.

METHODSAll members were evaluated physically and radlologically. Genomic DNA was extracted from peripheral blood of the patients who were treated from Dec. 2012 to Apr. 2013, their parents, grandparents, and normal volunteers from our department. The polymerase chain reaction ( PCR) , agarose gel electrophoresis and DNA sequence analysis were adopted to analyze HOXD13 from six cases with polydactyly and forty normal volunteers.

RESULTSAll patients had no family history. A heterozygous synonymous mutation, c. 291 C > T( p. A60A), was detected in exon 1 of the HOXD13 Gene in five of the polydactyly patients. Similar mutation was not detected in one brachy dactyly patient and the forty normal volunteers.

CONCLUSIONA heterozygous synonymous mutation, c.291C > T (p. A60A), of the HOXD13 gene may be related with polydactyly in dispersion type of Chinese han population.

China ; Exons ; Heterozygote ; Homeodomain Proteins ; genetics ; Humans ; Mutation ; Polydactyly ; genetics ; Polymerase Chain Reaction ; Sequence Analysis, DNA ; Transcription Factors ; genetics

OBJECTIVE:To prepare Yinxingye extract pellets and study its in vitro drug release rate.METHODS:The Yinxingye extract were coated with 3 coating materials(opadryⅡ,Eudragit L30D-55 and Eudragit S 100,respectively)to be prepared into pallets by centrifugalized palletizing method;and the 3 different coated pallets were prepared into mixed pallets in an pre-designed ratio.The in vitro release of the 3 coated pallets and the mixed-coated pallets were determined by changing the pH-gradient of media(0.1 mol?L-1 hydrochloric acid,pH 5.8 PBS,pH 7.2 PBS).RESULTS:The pallets coated with 3 different coating materials released quickly in 0.1 mol?L-1 hydrochloric acid,pH 5.8 PBS and pH 7.2 PBS,and the pellets with mixed coating materials had a sustained release until a complete release within about 8 h in pH gradient-changed media.CONCLUSION:The preparation process is feasible and provides theoretic basis for industrial production.

Objective To summarize the experience in surgical treatment of Ebstein anomaly,and evaluate the therapeutic effect.Methods Thirty-five patients of Ebstein anomaly were treated by operation.New York heart association(NYHA)heart function classⅠ?was in 11 cases,classⅡ?was in 14 cases,class III-Ⅳ?was in 10 cases.The cue of echocardiogram about tricuspid valve regurgitation in 24 cases were severe,5 cases were moderate and 6 cases were mild.Two patients accepted tricuspid valve replacement.Thirty-three cases were accepted tricuspid valve repair and right ventricle folded,in which 2 cases accepted Danielson method,and 31 cases accepted Carpentier method,among them,9 cases accepted one and a half ventricular repair.Associated heart anomaly was corrected at the same time.Results One patient died.There were 2 cases with third degree atrioventricular block after tricuspid valve replacement,2 cases with low cardiac output syndrome and 2 cases with atrial fibrillation combined premature ventricular contraction.The heart was lower by chest X-ray and echocardiogram examination,tricuspid valve regurgitation in 22 cases were disappeared,9 cases were mild,3 cases were moderate.All patients were followed up from 1 month to 7years,tricuspid valve regurgitation in 21 cases were disappeared,12 cases were mild,heart function were class Ⅰ-Ⅱ.Because of heart function aggravation,1 patient was operated again 3 years after operation.Condusions Ebstein anomaly is a rare congenital heart disease,Carpentier method tricuspid valve repair can decrease regurgitation obviously and protect right ventricular function.One and a half ventricular repair should be adopted according to the function of tricuspid valve and right ventricle.

OBJECTIVETo investigate the application of medpor and split-thickness skin graft in formation of cranioauricular sulcus during auricular reconstruction with Nagata method.

METHODSThe first stage operation was fulfilled according to the Nagata two-stage method which involves fabrication and grafting of the costal cartilage framework. The second-stage ear elevation operation was undertaken 6 months later to form the cranioauricular sulcus. Split-thickness skin was taken from temporal and accipital area. After releasing the auricular framework and transplanting C shaped medpor at the rear side of framework, the temporaparietal fascia flap was transferred to cover postauricular medpor and framework. Then the split-thickness skin graft was implant on the fascia surface.

RESULTSFrom July 2010 to August 2012, 20 cases (22 ears) were treated. Partial necrosis of temporaparietal fascia flap and framework exposure happened in 1 case. Successful ear reconstruction was achieved in other cases with satisfactory cranioauricular sulcus during the follow-up period of 6-18 months (average, 13 months).

CONCLUSIONSThe application of medpor and split-thickness skin graft in the ear elevation of Nagata method for auricular reconstruction for microtia can achieve satisfactory results. It not only avoids the obvious scar in the donor site due to harvesting full-thickness and intermediate-thickness skin, but also reduces chest trauma due to harvesting costal cartilage.

Costal Cartilage ; transplantation ; Dermatologic Surgical Procedures ; methods ; Ear Auricle ; surgery ; Fascia ; Humans ; Polyethylenes ; therapeutic use ; Skin Transplantation ; Surgical Flaps ; transplantation

Objective To investigate the prognostic value of platelet to lymphocyte ratio (PLR) for early virological response in Entecavir (ETV)-treated chronic hepatitis B (CHB) patients with genotype C infection.Methods Ninety-one genotype C CHB patients with HBV DNA≥1×105 copies/mL were treated with ETV (0.5 mg/d) for 10-13 days.The correlation between PLR and viral load decline was evaluated by Pearson or Spearman's rank correlation coefficient.Stepwise linear regression analysis was used to establish the prediction model of virological response.Receiver operating characteristic (ROC) curves were used to evaluate the predictive value of PLR for early virological response in ETV-treated patients with genotype C hepatitis B virus (HBV) infection.Results After 10-13 days of ETV treatment, HBV DNA decreased ≥1×lg copies/mL from baseline in 89 cases of the 91 patients, while HBV DNA declined ≥2×lg copies/mL in 65 patients and 4 patients achieved HBV DNA<500 copies/mL.HBV DNA decline was positively correlated with baseline PLR levels (r=0.235 09, P<0.05).After adjustment for age, gender, Hepatitis B e Antigen (HBeAg), and treatment days, HBV DNA decline was still positively correlated with baseline PLR levels (r=0.220 26, P<0.05).Area under curve (AUC) of prediction model including age , baseline aspartate transaminase (AST) and HBV DNA was 0.759 (95% CI : 0.660-0.859, P<0.01).After adding PLR to the prediction model, the AUC was 0.780 (95% CI: 0.685-0.875, P<0.01).Conclusions PLR is predictive to early virological response in ETV-treated CHB patients with genotype C infection.Higher baseline PLR level indicates a better virological response.PLR monitoring should be recommended in CHB patients with antiviral treatment in clinical practice.

Objective To investigate the role of interleukin-17 (IL-17) in spinal dorsal horns in neuropathic pain (NP) in rats and its effect on activation of astrocytes.Methods In vivo experiment Sixty-four male SPF Sprague-Dawley rats,aged 6-8 weeks,weighing 180-200 g,were randomly divided into 3 groups using a random number table:control group (group C,n =16),sham operation group (group S,n =24) and group NP (n =24).The animals were anesthetized with intraperitoneal pentobarbital sodium,the L5,6 spinal nerves of the left side of the rat were gently separated and exposed,tightly ligated with 5-0 silk suture and transected.In group S,the L5,6 spinal nerves of the left side of the rat were only exposed.In group C,no operation was performed.Mechanical pain threshold was measured at day 1 before operation and days 1,3,5,7,10 and 14 after operation.The expression of IL-17,IL-6,IL-1β and tumor necrosis factor-alpha (TNF-α) mRNA in the spinal dorsal horn was determined using quantitative real-time PCR at day 7 and day 14 after operation.At day 7 after operation,the activation of astrocytes in the spinal dorsal horn was detected.In vitro experiment Primarily cultured astrocytes of neonatal rats were randomly divided into 4 groups using a random number table:control group (group C,n=22),10 ng/ml IL-17 group (I10 group,n=18),50 ng/ml IL-17 group (I50 group,n-18) and 100 ng/ml IL-17 group (I100 group,n=22).In I10,I50 and I100 groups,the astrocytes were incubated with the culture medium containing 10,50 and 100 ng/ml IL-17,respectively.The proliferation of astrocytes was detected by MTT at 24,48 and 72 h of incutation or culture.The expression of IL-6,IL-1β and TNF-α mRNA was determined using quantitative real-time PCR.Results In vivo experiment Compared with group C,the mechanical pain threshold was significantly decreased at 3-14 days after operation,the expression of IL-17,IL-6 and IL-1β mRNA in the spinal dorsal horn was up-regualted at 7 days after operation,and the activation of astrocytes was increased in group NP,and no significant change was detected in the mechanical pain threshold at each time point after operation in group S.In vitro experiment Compared with group C,the proliferation of astrocytes was significantly increased at 48 h of incubation in I10 and I50 groups,the proliferation of astrocytes was significantly increased at 48 and 72 h of incubation,and the expression of IL-6 and IL-1β mRNA was up-regulated in I100 group,and no significant change was found in the proliferation of astrocytes in group S.Conclusion Up-regulated expression of IL-17 in spinal dorsal horns may be involved in the maintenance of NP,and the mechanism is related to promoted activation of astrocytes and induced inflammatory responses in rats.

Objective To investigate the role of miR-592 in the Glioma.Methods We first analyzed the expression of miR-592 in Glioma tissues from patients by quantitative PCR.We transfected U251 cells with miR-592 mimics and then detected the growth of cells by MTT assay.We performed dual-luciferase reporter assay and western blot assay to examine whether Runx2 was the direct target of miR-592 in U251 cells.In order to test whether Runx2 was the functional target of miR-592,we determined the cell growth curve by down-regulating the level of Runx2.Moreover,we also detected the apoptosis of U251 after Runx2 knockdown.Results The expression of miR-592 was significantly reduced in glioma tissues (t=2.752,P--0.013).Over-expression miR-592 remarkably increased the apoptotic rate of U251 cells compared with the control group (t=2.127,P=0.031;t=2.284,P=0.026).Flow cytometry analysis showed that MiR-592 significantly promoted apoptotic cell death of U251 cells Apoptosis rate was 7.2％±0.68％ in miR-592 group and 17.47％±1.45％ in control group (t=3.294,P=0.007).The results of double luciferase assay and Western blot assay showed that miR-592 directly targeted the 3'Runx2 of-UTR to inhibit the level of Runx2 protein.The effect of down-regulation of Runx2 on the growth of U251 cells was detected,the results showed that growth was significantly slower in the cells transfected with Runx2 siRNA than in those without Runx2 siRNA (t=3.124,P=0.O11).Detection of cycle by flow cytometry showed that runx2 down-regulated the apoptosis rate of U251 cells.Tumor growth curve showed that overexpression of miR-592 significantly inhibited tumor growth and the down regulation of Runx2 expresssion also significantly inhibited tumor growth.Conclusion miR-592 suppresses the growth and promotes the apoptotic rate of U251 cells by targeting Runx2.

ObjectiveTo observe the therapeutic effect of radiofrequency catheter ablation for idiopathic left ventricular tachycardia.To explore the relationship between surface electrocardiography and successful radiofrequency ablation location. MethodsThe electrophysiological data of surface electrocardiography and radiofrequency ablation,and the data of Holter in postorperation after 24 h and a half months,and tracking follow-up of 30 patients (23 males and 7 females)with idiopathic left ventricular tachycardia onset were retrospectively analyzed. ResultsRadiofrequency catheter ablation was successful in 29 patients(96.7%).The Holter was conducted in 29patients before and after the operation,the difference in average beats/24h before the operation(20 997 ± 10 786)and after the operation(921 ± 1 337)was statistically significant(P＜0.01).During the period of 1 to 3 months follow-up,2 patients relapsed and were all successfully re-ablated.No complication was found.The ventricular tachycardia lesions in left ventricular septum were found in 21 patients,of which 19 cases were located in a quadrant axis (-75.83 ± 19.36)°(-30 °～-90 °),and those in the left ventricular apex were in 9 cases,of which 7 cases were in the 2 quadrant axis(-102.6 ± 5.93)°(-91 °～-110 °). ConclusionRadiofrequency catheter ablation was an effeetive treatment technique for idiopathic left ventricular tachycardia with high successful rate,it could be selected as the first line treatment in patients with idiopathic left ventricular tachycardia.During idiopathic left ventricular tachycardia onset,the surface electrocardiography could help determine the initial site of ventricular tachycardia.

Objective:To explore the mechanism of B10 cell involved in cardiomyocyte hypertrophy following myocarditis, and to develop potential therapeutic strategies.Methods:BALB/c mice infected with Coxsackie virus B3 induced viral myocarditis model. The expression of angiotensin (ANG)Ⅱ and its receptor in myocarditis mice was detected. The changes of B10 cells in the hearts of control mice and myocarditis mice were analyzed by flow cytometry. After losartan was administered to myocarditis mice, the degree of myocardial inflammation was detected by HE staining, the expression of inflammatory factors was detected by ELISA, the myocardial hypertrophy was detected by wheat germ agglutinin (WGA) staining, and the changes of B10 cells in the heart were analyzed by flow cytometry. The levels of cardiac troponin T (C-TNT) and high mobility group box 1 (HMGB1) protein in neonatal mouse cardiomyocytes treated with ANGⅡ and ANGⅡ+ IL-10 were detected. Cardiomyocytes were treated with ANGⅡ, ANGⅡ+ B10 cells, ANGⅡ+ B10 cells + IL-10 receptor antibody and ANGⅡ+ B cells to detect C-TNT protein levels, and Annexin-V/PI was used to detect the apoptosis of cardiomyocytes. Cardiomyocytes were treated with oxidized HMGB1, reduced HMGB1 and disulfide HMGB1, and C-TNT expression was detected.Results:Coxsackievirus B3 infection caused cardiac hypertrophy, high expression of ANGⅡ and its receptor, and transient increase of B10 cells in mice. Losartan treatment blocked the angiotensin receptor, reduced expansion of B10 cells. B10 cells alleviated apoptosis of cardiomyocytes and inhibited the production of HMGB1 induced by ANGⅡ patch by producing IL-10, thus alleviating viral myocarditis and cardiac hypertrophy.Conclusions:B10 cells may play an important role in myocardial protection in myocarditis.