The present experiments were designed to investigate the effects of atriopeptin I on different vascular smooth muscles.Isometric tension was recorded from spiral strips of human umbilical arteries, gastro-epiploica dextral arteries, rat and rabbit aorta. Atriopeptin H showed a potent inhibitor on the contraction induced by noradrenaline ( 3tmol/l), Serotonin ( lnmol/1), hista-mine ( 10M-mol/l ) and phenylephrine ( l(imol/l)in the strips of rat and rabbit aorta, but not on the contraction induced by the above-mentioned drugs and KC1 (80mmol/l), prostaglandine F2a ( 10umol /I) in umbilical and gastroepiploica dextral arteries of human beings. Sodium nitroprussids showed also a potent antagonist on the contraction induced by noradrenaline ( 3 M-mol/1) serotonin ( 1imol/l), histamine (10imol/1) and prostaglandine F2a (10nmol/l) in the strips of umbilical arteries.lt produced concentration-dependent inhibition of the contraction induced by noradrenaline.It could remarkably decrease the resting tension of the strips.The present results suggest that atriopeptin I exhibits a similar vasodilator profile in rat and rabbit aorta as that found for sodium nitroprusside in the human umbilical arteries.The ineffectiveness of atriopeptin I on human umbilicalj and gas-troepiploica dextral arteries is in marked contrast to the effectiveness of sodium nitroprusside in the human umbilical arteries, indicating that the action of atriopeptin f possesses species difference.

BACKGROUND:Improper angle of prosthesis placement often induces acetabular cup impact, and limits the scope of activity of artificial hip joint, and cannot meet the requirement of daily life. At present, the angle of acetabular cup instal ation remains controversial during total hip arthroplasty. Moreover, there is lack of targeted guide for the acetabular cup instal ation during hip arthroplasty with different head-neck ratios. OBJECTIVE:To explore the safe range of the artificial acetabular cup instal ation angle for different head-neck ratios. METHODS:In accordance with the calculation formula of range of internal rotation and external rotation, abduction and adduction, flexion and extension after total hip replacement, interpretation of dynamical variety law of acetabular abduction and anteversion, and deriving inequalities depending on Widmer’s standard of artificial hip joint normal activities range:(1) external rotation range was at least 40°, and internal rotation range was at least 80°. (2) Abduction range was at least 50°, and adduction range was at least 50°. (3) Anteflexion range was at least 130°, and extension range was at least 40°. The safety scope of artificial hip joint instal ation angle at different head-neck ratios was determined by solving the above three groups of inequality. RESULTS AND CONCLUSION:The safe range of the artificial acetabular cup instal ation angle for different head-neck ratios was different. To meet the normal hip joint activities, the head-neck ratios of artificial hip should be greater than 22/12. Artificial hip joint activities gradual y increase with the enlargement of head neck ratios. With enlarging the head-neck ratios, the acetabular cup instal ation safety angle scope of abduction and anteversin gradual y increases and the extreme of abduction increases gradual y, then with anteversion increasing gradual y, the abduction upper extreme of the security scope gradual y decrease and lower extreme of the security scope gradual y increase, tending to 45° symmetrical y. When anteversion is the biggest, the abduction should be 45°.

Objective To study the early and mid-term outcome in terms of left ventricular(LV)geometry and function in patients with transposition of great arteries with intact ventricular septum (TGA/IVS) undergoing arterial switch operation.Methods Twenty patients were followed up and divided into 2 groups according to age:the earlier group and the later group.Age and sexual matched controls were also designed as control group 1 and control group 2.LV posterior wall thickness(PWTd),dimension(LVIDd)and length(L) at end diastolic phase,LV end-diastolic volume (EDV),end-systolic volume (ESV),ejection fraction (EF),mitral valve early (E) and late (A) inflow velocities and E/A,isovolumic relaxation time (IVRT) were obtained by two-dimensional echocardiography,normalized isovolumic relaxation time (IVRTn),wall thickness index (PWTd/LVIDd) and LV geometry index(LVIDd/L) were calculated,and these indexes between groups were compared.Results ①Compared with control group 1,PWTd in earlier group was higher [(0.41 + 0.06)cm vs (0.36 + 0.05)cm,P =0.022],but LVIDd had no significant statistical difference [(2.08 + 0.21)cm vs (2.21 + 0.23)cm,P =0.117],indicating PWTd/ LVIDd differed between groups(0.20 + 0.04 vs 0.16 + 0.01 P =0.001).②No abnormalities were observed in later group.③Compared with different age groups in TGA,EDV,ESV,L,LVIDd,PWTd were significantly higher in later group(P =0.000).There were obvious correlations between EDV,ESV,L,LVIDd and examined age (r =0.90,0.83,0.73,0.90,P =0.000,R2 =0.809,0.694,0.528,0.808) while there were no significant correlation between PWTd and examined age(r =0.56,P =0.000,R2 =0.309).Conclusions Early after operation,LV is undergoing hypertrophy or hyperplasia in TGA/IVS,but will recover in the mid-term period,and the function is normal all the time indicating that the LV myocardium may avoided irreversible pathological changes if operated in time.All in all,LV develops well in mid-term period.

Objective: To study the rehabilitation efficiency of adjuvant derma transplantation in treatment of front palate fistula. To find a better way to solve the problem of correcting the front fistula in short of the nearby tissue. Methods: Established the front fistula model in the oral and nasal cavity in the front of the palate with surgery. 30 Japanese big ear rabbits were divided into 2 groups. One month after operation, 15 rabbits were operated with the nearby tissue into the inner of nasal cavity and by transplanting their back skin while the others were treated only with the nearby tissues. The rehabilitation process and the histological changes of the palate were observed. Results: All dermal flaps survived after transplantation. This surgical method got a satisfying effect(P<0.05). The rate of success for correcting with single nearby tissues was lower. Conclusion: Adjuvant derma transplantation for rehabilitation of the front palate fistula is effective and reliable in the rabbits. The combination of the nearby tissue and homeochronous derma transplantation might be a good mode for correcting the front fistula in short of the nearby tissues.

OBJECTIVETo assess the safety and the accuracy of surgical navigation technology in the resection of severe ankylosis of the mandibular condyle with the middle cranial fossa.

METHODSThe CT scan data was transferred to a Windows-based computer workstation, and the patient' s individual anatomy was assessed in multiplanar views at the workstation. In the operation, the patient and the virtual image were matched by individual registration with the reference points which were set on the skull bone surface and the teeth. Then the real time navigation can be performed.

RESULTSThe acquisition of the data sets was uncomplicated, and image quality was sufficient to assess the operative result in three cases. The operations were performed successfully with the guidance of real-time navigation. The application of surgical navigation have enhanced the safety and the accuracy of the surgery for bony ankylosis of temporomandibular joint.

CONCLUSIONSThe application of surgical navigation can improve the accuracy and safety of surgical excision of the ankylosed skull base tissue.

Anatomic Landmarks ; anatomy & histology ; Ankylosis ; surgery ; Humans ; Skull ; diagnostic imaging ; surgery ; Surgery, Computer-Assisted ; methods ; Temporomandibular Joint ; surgery ; Temporomandibular Joint Disorders ; surgery ; Tomography, X-Ray Computed

Objective To investigate the value of Doppler ultrasound in the eady diagnosis,monitoring and assessing of renal damage in neonatal asphyxia.Methods A total of 60 cases of neonates within 24 h were divided into severe asphyxia group (Apgar score 0-3),mild asphyxia group (Apgar score 4-7) and healthy control group (Apgar score 8-10) according to Apgar score at 1 min after born.Then the peak systolic velocity (PSV),end diastolic velocity (EDV) and resistance index (RI) of renal artery were obtained by Doppler ultrasound within 24 h,on day 3,day 7,and day 10.The level of serum cystain C (sCysC) was also recorded accordingly.Results Within 24 h,compared with healthy control group,the PSV and EDV in severe asphyxia group and mild asphyxia group decreased (all P＜0.05),while RI increased (all P＜0.05).The PSV in mild asphyxia group returned to normal in 3 days,EDV and RI returned to normal in 10 days,there were no statistically significant difference compared with healthy control group (all P＞0.05).The PSV,EDV and RI in severe asphyxia group were still significantly differences compared with healthy control group on day 10 (all P＜0.05).Within 24 h and on day 3,sCysC in the mild asphyxia group increased obviously compared with healthy control group (both P＜0.05).On day 7 and day 10,the differences of sCysC was not statistically significant between mild asphyxia group and healthy control group (both P＞0.05).Compared with healthy control group,the sCysC in severe asphyxia group increased significantly (all P＜0.05) on every time point.PSV and EDV were negatively correlated with sCysC,RI was positively correlated with sCysC.Conclusion Changes in renal function can be reflected soon by index of renal blood flow PSV,EDV and RI.

In the present study the nutritional status in 1723 inpatients were evaluated. The over nutrition in male, in the cadre, and in patients with cerebrooardiovascular diseases or with diabetes was significantly higher than that in female, in the staff members, and the patient changing the valve in heart with rheumatism, respectively. The over nutrition in patients with breast and colonrectal cancer was obviously higher than that in stomach carcinoma patients. The sum total of lymphocytes was reduced in middle malnutrition patients. The nutritional status was well compared with the abnormal ratio of hemoglobin and serum protein, and A/G reverse was increased in some middle malnutrition patients. The MAC, MAMC and TSF in all of the malnutrition patients were than that of 80% standarized value, and were all the same in the evaluation of body weight.

Background and purpose: Sorafenib hepatocellular carcinoma assessment randomized protocol (SHARP) and sorafenib in patients in Asia-Pacific region with hepatocellular carcinoma (ORIENTAL) had indicated that multi-kinase inhibitor sorafenib could prolong overall survival (OS) and time to progression (TTP) as well as improve progress free survival (PFS) in patients with advanced stage hepatocellular carcinoma. Drug-related adverse events in the course of treatment restricted its clinical application to a certain degree. This study was aimed to summerize the adverse events as well as the management of sorafenib in our clinic. Methods: Twenty-five cases clinically diagnosed as advanced hepatocellular carcinoma were enrolled from January 2008 to October 2009. All the patients who received sorafenib treatment met inclusion criteria as followed: (1) Progression of disease after trans-hepatic arterial chemoembolization therapy; (2) Extensive portal vein cancerous thrombus formation; (3) Portal zone or retroperitoneal lymph node metastasis or multiple remote metastasis, such as lung or bone; (4) Diffused poor blood supply to tumor; (5) Inform consent was obtained. All adverse events with different grade were observed during the beginning 12 weeks, and clinical treatment were carried out relatively. Results: Total of 25 cases were enrolled. Nine patients died of the disease, 3 of them died during the first 12 weeks, 3 patients abandoned sorafenib treatment, among them 2 died before the finish of 12 weeks treatment and 1 patient discontinued 5 months after the sorafenib treatment. Twenty cases finally assigned. Number of patients encountered drug-related adverse events were: HFSR (hand-foot-skin-reaction) 4(4/20), diarrhea 4(4/20), alopecia 5(5/20), rasb 4(4/20), fatigue 8(8/20), leukopenia and Thrombocytopenia 4(4/20), elevated blood pressure 1(1/20) and abdominal pain 1(1/20). After clinical management, 20 patients' sorafenib treatment were eventually not affected by adverse events. Conclusion: Sorafenib was well-tolerated and is a safe option of treatment for patients with advanced hepatocellular carcinoma.

BACKGROUND:Adipose-derived stem cells discovered recently are a new kind of adult stem cells, and have a strong multi-differentiation capacity. However, there are rare studies concerning in vivo osteogenic capacity of adipose-derived stem cells.
OBJECTIVE:To investigate the effect of adipose-derived stem cells combined with gelatin sponge on repairing bone defects.
METHODS:Adipose-derived stem cells from rabbit inguinal fat pads were isolated and cultured, and then
induced using an osteogenic medium containing bone morphogenetic protein 2 fol owed by injection of gelatin sponge. Radial defect models of rabbits were prepared. Compound of adipose-derived stem cel s and gelatin sponge was implanted into the lesion side, while gelatin sponge alone was implanted into the contralateral side. Rabbits were kil ed at weeks 6 and 12 after bone defect repair for X-ray examination, CT scan, and hematoxylin-eosin staining.
RESULTS AND CONCLUSION:Lane-Sandhu X-ray and Lane-Sandhu histological scores after compound implantation were significantly higher than those after repair with gelatin sponge alone. It indicates that
adipose-derived stem cel s combined with gelatin sponge can promote bone defect healing of rabbits, showing an obvious osteogenic capacity in vivo.

Objective To evaluate the early change of left ventricular (LV) systolic function in patients with type 2 diabetes mellitus(T2DM) by ultrasound speckle tracking imaging. Methods Ninety-five subjects were included:40 T2DM with normal LV ejection fraction (LVEF≥50% ,group A),20 T2DM with abnormal LVEF (LVEF<550 %) (group B), and 35 normal controls. Two-dimensional strain images were acquired from LV short-axis view. LV peak systolic global and segmental radial strain and circumferential strain at the levels of mitral annulus, papillary muscle and apex, and LV systolic global and segmental rotation at the levels of mitral annulus and apex and LV peak systolic global twist were assessed. Results In group A, compared with control group, LV peak systolic radial strain parameters were not significant difference (P >0.05), peak systolic circumferential strain of part segments, average peak strain of each plane and global strain were reduced (P <50.05～0.001) ,and LV peak systolic rotation of all apical segments, peak systolic global rotation at the levels of mitral annulus and apex,and peak systolic global twist were significantly increased (P <0.05～0.001). Compared with control group and group A,all LV systolic radial strain and circumferential strain parameters, LV systolic global and segmental rotation and peak systolic global twist in group B were significantly reduced (P <0.05 ～ 0.001). Conclusions Speckle tracking imaging could be used to evaluate the early change of LV torsional deformation and LV systolic function in T2DM.