Objective: To investigate the effects of bovine plasma fibronectin on the proliferation and differentiation of rat osteoblasts. Methods:Rat osteoblasts were cultured and identified. AlamarBlue were used to determine the effect of various concentration of bovine plasma fibronectin on the proliferation of the osteoblasts. ELISA method was used to determine the alkaline phosphatase activity of the cells. Results: Fibronectin stimulated the proliferation of rat osteoblasts at 40 ?g/ml (P

Objective To establish the method of depict ing the left ventricular (LV) pressure-volume loop automatically by computer which incorporates LV catherization simultaneous with LV acoustic quantification echocardiography and to assess echocardiography non-invasive evaluation LV chamber stiffness. Methods Thirteen patients with hypertrophic cardiomyopathy (HCM) underwent LV catherization simultaneously with echocardiography. LV pressure and volume curves were sent to computer, and LV pressure-volume loop was depicted automatically and modulus of LV chamber stiffness (Kc) was obtained. Pulsed Doppler echocardiography of mitral intraventricular flows was obtained in patients with HCM. Results Patients with HCM had significantly higher Kc obtained from LV pressure-volume loop ( 0.43 ? 0.11 vs 0.27 ). R-E 3/R-E 0, (R-E 2)-(R-E 1), (R-A 3)-(R-A 2) were correlated to Kc(r= 0.61 , 0.57 , 0.58 ,respectively). Conclusions This method provides a simple and reliable technique for automatically tracing pressure-volume loop and should facilitate further investigation of the left ventricular diastolic function in clinical practice. R-E 3/ R-E 0, (R-E 2)-(R-E 1), (R-A 3)-(R-A 2) offer new non-invasive indices in evaluating LV chamber stiffness.

Objective To investigate the independent factors associated with the apex of left atrial appendage(LAA) spontaneous echo contrast (SEC) in patients with valvular atrial fibrillation (VAF). Methods Seventeen normal subjects and 21 patients with VAF were included. Plasma fibrinogen (Fg),vov Willebrand factor (vWF),D-dimer (DD),P-selectin,thrombin-antithrombin complexes (TAT) and plasminogen activator inhibitor-1(PAI-1) were measured. The apex of LAA SEC was assessed quantitatively by integrated backscatter (IBS). LAA flow and pulmonary venous flow were detected by transesophageal echocardiography. Results Fg,vWF,DD,TAT and PAI-1 were increased significantly in patients with atrial fibrillation compared with control ( P

Objective:To investigate the expression of protein kinase C-?(PKC-?)in human ameloblastoma(AB)and its relationship with human telomerase reverse transcriptase(hTERT).Methods:The expression of hTERT mRNA was detected by in situ hybridization and PKC-? protein by immunohistochemistry in 54 cases of AB,7 cases of normal oral mucosa(NOM)and 16 cases of odontogenic keratocyst(OKC).Results:The positive rate of hTERT mRNA in AB,OKC and NOM was 94.4%(51/54),87.5%(14/16)and 14.3%(1/7)(P

Objective To evaluate correlations between left atrial(LA) and left ventricular(LV) function in patients with hypertension by acoustic quantification(AQ) technique. Methods Forty-eight hypertensive patients and twenty control subjects were studied. Patients with hypertension were divided into two groups by left ventricular mass index(LVMI),normal LVMI group(32 cases) and left ventricular hypertrophy(LVH) group(16 cases). Left atrial ejection fraction(LAEF),atrial emptying volume(AE),conduit volume(CV) and reservoir volume(RV) were measured with AQ technique. Results RV and AE significantly increased in normal LVMI subgroup and LVH subgroup;CV and LAEF respectively decreased or increased in LVH subgroup. LA booster pump function positively correlated to onset atrial emptying volume and RV,negatively correlate to CV and LV diastolic function. LA conduit function positively correlated to LV diastolic function,negatively correlated to LAEF and AE,RV as well as onset atrial emptying volume. LA reservoir function positively correlated to onset atrial emptying volume and LAEF,negatively correlated to CV. There was no significant correlation between LA reservoir function and LV diastolic function. Conclusions LV diastolic dysfunction induces decreased LA conduit function and increased reservoir function,which may facilitate early diastolic filling of the left ventricle. The changes of LA conduit function and reservoir function may increase of LA preload. Enhancement of LA preload and LA systole makes increased LA booster pump function,which facilitate late diastolic filling of left ventricle.

Objective:To detect the expression of cyclin B 1 in human ameloblastoma(AB). Methods:Expression of cyclin B1 was detected in 73 cases of AB (32 primary, 33 recurrent and 8 malignant cases), 19 of odontogenic keratocyst (OKC) and 7 of normal oral mucosa by streptovidin-biotin method. Results:The ratio of positive nuclear expression of cyclin B 1 in normal oral mucosa, OKC and AB was 28.6%(2/7), 36.8%(7/19) and 63.0%(46/73) respectively (P

Objective To investigate the prophylactic treatment of cytomegalovirus (CMV) infection in renal transplant patients.Methods Fifty-five patients were divided into two groups. Group A (n=27) was administered with ganciclovir (5 mg/kg every day) intravenously for 30 days. Group B(n=28) was the control group. According to donor (D) or recipient (R) CMV antibody categories,each group had D+/R-,D-/R+,D+/R+ three subgroups. All patients were followed up prospectively for 6 months with measurements of CMV antibody,CMV-DNA antigen,acute rejection for monitoring activity of CMV infections.Results The rate of CMV infection and disease was similar in both groups. The delay between transplantation and CMV infection was significantly longer in the ganciclovir group than in the control group (70.1?14.9 vs 50.2?9.8,P

Objective To study the effects of Alprosladil and Glutathione therapy on patients with drug-induced acute renal damage. Methods 108 patients with drug-induced acute renal damage were divided into three groups at random. The patients in gruoup A (n=36) received 10?g Alprosladil injection once a day, the patients in group B (n=42) received both 10?g alprosladi and 1200mg glutathione injection once a day additionally, and the patients in group C (n=30) received 10mg dpamine injection once a day. The course of treatment of the three groups was 2～4 weeks. Results The effective rates for acute renal failure in groups A, B and C were 85 7%, 96% and 61% respectively. The effective rates for proteinuria, hematuria, N-acetyl-?-glucosaminidase(NAG)and retinol-binding protein(RBP) in urine were 70%, 78%, 76% and 80% in group A, 85%, 90%, 90% and 90% in group B, and 50%, 50%, 42% and 58% in group C respectively, which had significant difference among the three groups (P

In recent years,using stem cells to repair the bladder defect is a hot issue on the studies of bladder tissue engineering.They are ideal seed cells for bladder regeneration of tissue engineering depending on their self-renewal and multi-differentiation potential.In this paper,we give a review on the use of embryonic stem cells and adult stem cells as seed cells to repair the bladder defect by tissue engineering approach.

OBJECTIVETo explore therapeutic effects of Modified pinning combined with external tension band for the treatment of Gartland type III humeral supracondylar fractures in children.

METHODSFrom February 2009 to November 2010, 79 children with Gartland type III humeral supracondylar fractures were treated by modified pinning (pinning cross internal and external condyle assisted with lateral condyle) combined with external tension band (crossing needle end and hooking around) through lateral approach of elbow. There were 47 males and 32 females, with an average age of 8.7 years (ranging from 2.5 to 14 years). The time from injury to operation was 2 h to 8 d. The elbow joint function and Carrying angle were observed before and after treatment. The Flynn criteria were used to evaluate therapeutic effects.

RESULTSSixty-one patients were followed up (18 patients' data were lost) for 6-30 months (mean 13.5 months). According to Flynn criteria, 53 patients got excellent result, 7 good and 1 fair.

CONCLUSIONTreatment of child Gartland type III humeral supracondylar fractures with modified pinning combined with external tension band through lateral approach of elbow is believed to be an ideal method, which has advantages of reliable fixation, rapid recovery and less complications.

Adolescent ; Bone Nails ; Child ; Child, Preschool ; Female ; Fracture Fixation ; instrumentation ; methods ; Humans ; Humeral Fractures ; diagnostic imaging ; surgery ; Male ; Mechanical Phenomena ; Radiography ; Treatment Outcome