Objective To evaluate the effect of resurfacing facial atrophic acne scars with 2790 nm YSGG fractional laser.Methods 38 patients with facial atrophic acne scars were treated with the 2790 nm YSGG fractional laser.All patients were randomly divided into two groups:group A using the combination with ablative and non-ablative mode of treatment; group B only using the non-ablative mode throughout the entire face,four treatment sessions for each patient,6 weeks interval.Comparative photographs were taken by using VISIA.Specific complexion analysis was used to identify and quantify depressed scars and texture,and patient satisfaction was graded with a 4-point scale.Results All of facial atrophic acne scars obtained different degree of improvement were treated by 4 times.In groups A and B,cure rate achieved 56.0 ％ and 30.8 ％,respectively.All the 38 patients had a chieved efficacy (81.6 ％),and they were satisfied with the results (84.2 ％).No severe side effect was observed.Conclusions 2790 nm YSGG laser is easy to manipulate and is more exactly than other lasers.It is especially effective in enhancing the clinical outcomes of scar revision with less complications and pigmentation,and thereby 2790 nm YSGG fractional laser can provide the patients with superficial scar in face as an additional therapeutic option.

Objective To investigate cause,diagnosis,treatment and prevention of vertebral artery injury in cervical spine surgery.Methods Data of 7 patients with vertebral artery injury caused by cervical spine surgery from October 2002 to April 2012 were retrospectively analyzed.There were 6 males and 1 female,aged from 23 to 65 years (average,48.9 years).The reasons of cervical spine surgery were as follows:cervical spondylotic myelopathy (5 cases),traumatic subluxation of C4 and C5 (1 case),and cervical spinal stenosis due to skeletal fluorosis (1 case).All cases had unilateral vertebral artery injury,including 4 cases in the left side and 3 cases in the right side.The cause,treatment and prognosis of vertebral artery injury in 7 patients were analyzed.Results Four patients suffered from vertebral artery injury during anterior cervical spine surgery; 2 cases were caused by excessive lateral trepanation,1 by excessive lateral discectomy using a curette,and 1 by Kerrison punch during decompression in a patient with anomalous vertebral artery due to traumatic subluxation of C4 and C5.Three patients suffered from vertebral artery injury during posterior surgery; 2 cases were caused by a drill bit during drilling lateral mass of C4 and 1 by a rongeur during removing posterior C1 arch in a patient with cervical spinal stenosis due to skeletal fluorosis.After vertebral artery injury,all patients were immediately treated by hemostatic tamponade,and then the incisions were closed.However,1 patient occurred delayed cervical hemorrhage 4 weeks after operation.Then he underwent vertebral artery angiography,balloon embolization and evacuation of hematoma.All cases had no cerebral infarction.However,two of them had postoperative temporary dizziness.Conclusion Vertebral artery injury in cervical spine surgery is a rare but serious complication,which is associated with surgical mistakes and anatomical variations.Hemostatic tamponade and embolization are effective for this complication.

Objective To investigate the therapeutic effect of oat ?-glucans on liver injury in hyperlipemia rats.Method Rats were fed on high fat forage for 3 w to establish hepatic injury model,then the model group was orally given oat ?-glucans at doses of 133,266 and 533 mg/(kg bw.d) respectively.At the same time,there were 3 control groups including 200 mg/(kg bw.d) chitosan oligosaccharide,normal and liver injury(model group fed with distilled water).Serum levels of ALT and AST,the content of MDA in serum and liver homogenate was assayed.Results Oat ?-glucans at high dose obviously decreased the levels of ALT,AST and MDA in the liver injury models,SP had a better protective effect on the liver injury than oligosaccharide did.Besides,in the treated group with ?-glucans,degenerative and necrotic changes of the liver cells were apparently milder than those of the untreated group.Conclusion Oat ?-glucans can obviously relieve the liver injury in hyperlipemia rats.

Objective To evaluate the clinical applied value of serum vascular endothelial growth factor (VEGF) in therapeutic process of patients with malignant tumor. Methods Serum VEGF levels and positive rates were measured by ELISA in 337 untreated cancer patients, 25 postoperative and 22 recurring postoperative patients with malignant tumor, while 47 benign tumor and 61 healthy individuals as controls. Results Serum VEGF levels and positive rates were significantly higher in patients with various malignant tumors than in benign tumors and healthy controls (P 0.05). Conclusions It was helpful to get a message of pathogenetic condition of malignant tumor patients whose serum VEGF was dynamically monitored.

Objective To know the situation of the hepatitis C virus(HCV)infection in blood donors of Maoming City,and pro-vide the basic data for recruiting volunteer blood donors and preventing of HCV infection.Methods Blood samples were collected in Maoming blood center,and were detected by using HCV antibodies of different manufacturers and operated by different people.Du-plicate test was used to reexamine the specimens which were reactive in the initial test.Statistical analysis was performed.Results HCV prevalence of blood donors from Maoming was 0.74%.The prevalence of female was slightly higher than the male,but the difference was not statistically significant(P >0.05).The HCV prevalence of civil servant and medical personnel was relatively low-er.HCV prevalence of repeat blood donors was obviously lower than blood donors for the first time(P <0.05).Conclusion HCV prevalence of blood donors in Maoming City was in a relative low level.The risk of HCV infection in people who is younger than 35 years old and at the same time qualified to donate blood is quite low.Establish a stable volunteer blood donor group is beneficial to blood safety.It's necessary to strength the propaganda and prevention of HCV knowledge to population besides civil servant and medical personnel,which would be helpful for the control of HCV infection.

Objective To investigate the role of endothelin - 1( ET-1) and interleukin-8( IL-8) in tracheal aspirates (TA) in children with acute respiratory distress syndrome(ARDS). Methods The levels of ET- 1 and IL - 8 in TA of 13 patients with ARDS and 11 controls were assayed by enzyme - linked immunosorbent assay. Lung injury score was applied to all patients. Results The levels of ET-1 and 1L-8 in TA were significantly higher in ARDS than those in controls (P

Objective To explore the influence of home synthesize magnetic iron oxide (called Fe2O3-PLL) labeling on peripheral blood endothelial progenitor cells (EPCs) bionomics to provide experimental foundation for MR imaging ex and in vivo. Methods Fe2O3 was incubated with PLL for 2 hours to obtain a complex of Fe2O3-PLL. Rabbit peripheral blood mononuclear cells were isolated and EPCs were selected by adherence method. Fe2O3-PLL was used to label EPCs. Prussian blue stain and electron microscope was used for showing intracellular iron. MTT assay was assessed to evaluate the difference of growth curve between unlabeled and labeled with 25 mg/L Fe2O3-PLL. Flow cytometry was performed to analyze cell cycle, cell apoptosis and the expression of surface markers of labeled and unlabeled cells. Expressions of Enos, KDR and Vwf at Mrna levels among unlabeled and labeled EPCs were detected by real-time polymerase chain reaction. Calcium ion channel and membrane fluidity were observed and analyzed by laser confocal microscopy. Statistical analyses were used with ANOVA and t test. Results Almost 100% cells were labeled by Fe2O3-PLL, iron-containing vesicles were intracytoplasma. There was no statistical difference in cells growth curve, cell life cycle [(93.74±3.52)% ,(94.57±3.66)% ] and cell apoptosis rate(12. 89±1.81) %, (11.67±1.18) %) between labeling with Fe2O3-PLL at a concentration of 25 mg/L and unlabeled cells (t = 0. 283, P > O. 05 ; t = 0. 977, P > 0. 05). There was also no statistical difference in relative amount of Enos, KDR and Vwf at Mrna levels and the expression of sudace phenotypic markers (CD34, CD106, CD146 and KDR) between two groups (P > 0. 05). In addition,Labeling had little influence on calcium ion channel and didn't significantly alter cell membrane fluidity.Conclusions The rabbit peripberal blood EPCs can be effective labeled with Fe2O3-PLL and without significant influence on cells bionomics at a low concentration of 25 mg/L. Almost every cell can be labeled and the labeled cells can be used further.

To study the role of BAMBI in adipogenesis, we constructed lentivirus interfering vector targeting on porcine BAMBI, packaged and infected the porcine preadipocyte. The differentiation state of preadipocyte was detected by Oil Red O staining and Oil Red O extraction assay and the expression levels of adipogenic marker genes were detected by Real-time qPCR and Werstern bloting. Results show that BAMBI expression was significant decreased after lentivirus infection, which was repressed more than 60% by shRNA2. Moreover, knockdown BAMBI increased the lipid accumulation of porcine preadipocyte and improved the expression of PPARγ (peroxisome proliferator-activated receptorγ) and ap2 (adipocyte protein 2). In summary, these data indicated that BAMBI inhibited adipocyte differentiation by facilitating the phosphorylation of ERK1/2.
Adipocytes ; cytology ; Adipogenesis ; Animals ; Cell Differentiation ; Membrane Proteins ; metabolism ; Mitogen-Activated Protein Kinase 1 ; metabolism ; Mitogen-Activated Protein Kinase 3 ; metabolism ; PPAR gamma ; metabolism ; Phosphorylation ; Swine

Objective To investigate the technique of radio-stereotactic mammography aspiration biopsy(SCNB) and the clinical usage.Methods The stereotactic mammography aspiration biopsy was performed on 38 breast focuses,the results were compared with pathology.The technique and operation skills of SCNB were studied.Results In this 38 breast focuses,the accuracy of diagnostic aspiration,misplay and false negativity were 84.2%,7.89%and 7.89% respectively.No false positive was found.Conclusion In this technique,the distance between the needle tip and focus central was calculated by computer.This is a effective,easy operate and safe tool for the localization and very valuable in the diagnosis of a early cancer.

Objective To evaluate the 1.5 T magnetic resonance imaging system to depict and track in vivo of magnetically labeled endothelial progenitor cells(EPCs),and to study the possibility for preventing the atherosclerotic plaque formation in New Zealand rabbit model of carotid arterial injury after transplantation.Methods New Zealand rabbit EPCs were isolated,confirmed,expanded and then incubated with home synthesized Fe_2O_3-PLL,Prussian blue stain was performed for showing intracellular irons.The model of carotid arterial injury was performed by 2.5F balloons,the group A of 8 rabbits received magnetically labeled EPCs,group B of 3 rabbits received fluorescent-labeled EPCs and the group C of 5 rabbits were given same volume saline injection after endothelial injury of the carotid artery.MR imaging and histology were performed and compared 4 days later for randomly chosen three rabbit,each from one of the three group;all the other rabbits were fed with high lipid diet and examed using MR imaging and histology after 15 weeks.Results Epcs labeling efficiency was more than 95% by Prussian blue stain, 4 days after transplantation of EPCs,only in group A,the injured endothelium of carotid artery had signal intensity loss in T_2 * WI,which were correlated well with the area where the most Prussian blue staining positive cells were found in histopathology analyses.The rabbits of group A and B which received EPCs transplantation exhibited fewer plaques formation than those of the group C(P