To observe the alterations of oxygen delivery/consumpation, the deformability and adherence of neutrophil in canine with respiratory distress syndrom(RDS), Method:The 15 selected healthy mongrel dogs were randomly allocated to receiving intravenous oleic acid 0.06 ml. kg~(-1) (test group, n= 8)or equivalent volume of saline (control group, n=7) respectively following anesthesia induction. The hemodynamics was monitored with Swan-Ganz catheter technique, the neutrophils were collected from arterial blood with centrifugal way to measure the deformability and adherence at 1st, 2nd, 4th and 6th hour after the administration of oleic acid separately. The pulmonary pathological examination underwent at 6th hour after the administration. Result: The pathological findings of test group were compatible with the RDS pathological characteristics. One hour after the administration, the deformability decreased significantly and the adheranee increased markedly (P

0.05)in the mild group compared with at the first day, but an obvious rise(P0.05), while continued to increase in the severe group(P

The reconstruction with harmstring tendons is the commonly therapic method for the anterior cruciate ligament (ACL) injury. The graft-implant fixation is important for the initial biomechanics stability and the graft-tunnel healing. The methods of fixation are variable, which can be classified by direct fixation and indirect fixation or by in-tunnel fixation and non-in-tunnel fixation. The interface screw, endobutton, cross pin and tendon knot are most commonly used in clinic. No fixation method is superior to all others, for every method has advantages and disadvantages respectively.

Objective To evaluate the value of technetium-99m methoxy isobutyl isonitrile (99Tcm-MIBI)tomography and integrated CT in preoperative localization diagnosis of secondary hyperparathyroidism (SHPT).Methods 28 patients with SHPT were selected.15 minutes and 90 minutes (delayed images)after intravenous administration of 99Tcm-MIBI 370 MBq,static anterior planar images of the neck and chest were obtained.99Tcm-MIBI tomography and integrated CT scan were acquired after the delayed imaging.The imaging findings were compared to the pathological results.Results The detection rate of SHPT lesions by 99Tcm-MIBI dua-phase imaging and 99Tcm-MIBI tomography and registration with integrated CT scan was 53.3％ and 70.7％ respectively.The difference had statistical significance(X2 =5.903,P＜0.05).The fusion imaging with integrated CT can provide detailed anatomy data and more information for surgical doctors.Conclusion 99Tcm-MIBI tomography and registration with integrated CT scan can improve the detection rate of SHPT compared with 99Tcm-MIBI dua-phase imaging,provide more detailed anatomy data,and has high clinical value in preoperative localization and diagnosis of SHPT.

Objective To explore the complication s and management of the placement of vena caval filter in patients suffering from deep venous thrombosis (DVT). Methods From 1998 to 2005, 80 DVT patients were treated by vena caval filte r placement. Before the placement 46 cases received CTA, 27 cases did radionucli de imaging(LPS), 16 cases did color Doppler ultrasonography, 5 cases underwen t venography. Result The p rocedure was successful in all 80 cases. New DVT developed in contralateral fem oral vein in 2 patients and vena caval obliteration developed in 3 patients afte r one year. Conclusion The complications of vena caval filter placement could be prevented by correctly de fine indication and good expertise.

Objective To prevent and manage spinal ischemia caused by cross-clamping the thoracoabdominal aorta often undertaken in clinical surgical practice. Methods Forty-five rabbits were divided for 3 experiments. A variety of vasoactive agents were used to manage spinal ischemia; The effect of cerebrospinal fluid drainage was evaluated; Hypothermia was used to alleviate the spinal ischemia injury. Results Among the above three experiments neuron degeneration was the mildest in hypothermia group though prostaglandin and cerebrospinal fluid drainage do have some positive effects. Conclusion It was suggested that administration of hypothermia and prostaglandin are the most effective for the prevention of spinal ischemic injury during major thoracoabdominal aorta surgery.

Objective To observe the clinical effect of low molecular weight heparin on the acute cerebral infarction (ACI) and the influence on hemodynamics.Methods 143 cases of ACI within 72 hours of the onset of symptoms were randomly divided into two groups:low molecular weight heparin (LMWH) and control groups.The LMWH group was added 0.4 ml LMWH subcutaneously twice a day for 10 days,in addition to the routine treatment.The indexes of hemodynamics were measured before and after treatment.Neurological scoring was used to evaluate the clinical effect.Results The effect in the treatment group was significantly superior to that in the control group (P

Objective·To investigate the effects of insulin-like growth factor 1 on prion encoding gene (PRNP) expression and amyloid precursor protein (APP) metabolism of PC12 cells. Methods·After PC12 cells were treated with 20, 40, 80 ng/mL IGF-1 for 24 h, real-time PCR was used to detect the mRNA expression levels of PRNP, and Western blotting was used to detect the protein levels of AKT, phosphorylation of AKT (pAKT), ERK and phosphorylation of AKT (pERK). The level of β-amyloid 42 (Aβ42) in supernatant fluid was detected by ELISA. Results·Compared with the blank control group, the expression of PRNP mRNA in Alzheimer's disease (AD) model group was increased significantly (P<0.01). The expression of PRNP mRNA was significantly increased after cells were treated with 40 and 80 ng/mL IGF-1 for 24 h (P<0.01). There was no significant difference in APP protein expression among AD model group and three IGF-1 treatment groups (P>0.05). Compared with the blank control group, the level of Aβ42 in supernatant fluid of model group was decreased significantly with the increasing of IGF-1 concentration. The expression level of Aβ42 was decreased significantly in 40 and 80 ng/ml IGF-1 treatment group (P<0.05). The expression of AKT/pAKT, ERK/pERK in AD model group was significantly increased along with the increasing of IGF-1 concentration (P<0.05). Conclusion·IGF-1 could regulate the expression of PRNP gene and effect the metabolism of APP, which may be associated with PI3K/AKT, MAPK/ERK1/2 signaling pathway.

OBJECTIVE To evaluate the benefits,if any, of thyroidectomy using the harmonic scalpel versus conventional thyroidectomy. METHODS The clinical data of 34 consecutive patients underwent thyroid nodule enucleation or lobectomy in one year using the harmonic scalpel were recorded. The results were compared with that of the 34 case-control patients in the same period using conventional techniques. RESULTS The average incision length for those underwent thyroidectomy with the harmonic scalpel and conventional techniques was 3.8cm and 6.9cm respectively. Drains were not used in the harmonic scalpel group compared with average of 47ml drainage in the control group. The average inpatient cost was 7205 RMB for the harmonic scalpel group versus 8054 RMB for the control group(P=0.137). The average postoperative length of hospitalization was 3.5 days for the harmonic scalpel group versus 4.1 days for the control group (P=0.228). The average time of anesthesia was 95 minutes for the harmonic scalpel group compare with 81 minutes for the control group (P=0.018). One postoperative hoarseness occurred in each group. Two patients had mild skin burn in the harmonic scalpel group. No other complications were enumerated(x2=0.273,P=0.602). CONCLUSION The harmonic scalpel is a safe alternative for thyroidectomy. Compare with conventional thyroid surgery, this technique offers cosmetic benefit and less trauma for patient with thyroid nodules.

BACKGROUND: Artesunate can relieve pulmonary fibrosis, but its mechanisms are rarely reported.OBJECTIVE: To explore the effect of artesunate on apoptosis of HFL-I cells and the role of Fas, FasL and Caspase-3 in the artesunate-mediated apoptosis of HFL-I cells. METHODS: Cell counting kit-8 (CCK-8) assay was used to determine the effects of artesunate at 1, 10, 100 mg/L on the growth of HFL-I cells in vitro. Apoptosis ratio was examined by flow cytometry (FCM). The mRNA level of Fas, FasL and Caspase-3, were assessed by reverse transcription-polymerase chain reaction (RT-PCR). RESULTS AND CONCLUSION: Artesunate had a significantly inhibitory effect on the proliferation of HFL-I cells in a dose-dependent manner in vitro. The apoptosis rate of HFL-I cells was significantly increased in the artesunate-treated group compared with the control group (P < 0.05 or P < 0.01). The mRNA levels of Fas, FasL and Caspase-3 were significantly higher in the artesunate-treated group than the control group (P < 0.05). The findings of this study demonstrate that artesunate can exert a marked anti-pulmonary fibrosis effect by up-regulating mRNA levels of Fas, FasL and Caspase-3, which can induce the growth inhibition and apoptosis in HFL-I cells.