0.05).The results differentiated by Sysmex XS-800i showed excellent correlation with those by handwork.Conclusion The performance of the Sysmex XS-800i automated hematology analyzer is satisfied.

Objective To study the expression and function of TCRαβ+ CD3+ CD4-CD8-T (Double negative regulatory T cells,DN Tregs) in peripheral blood of Systemic lupus erythematosus (SLE) patients,and investigate their function in pathogenesis of SLE.Methods TCRαβ+ CD4-CD8 T cells were quantified as percentage of total CD3+ T cells in peripheral blood from 20 SLE patients and 20 healthy controls by flow cytometry.Used ELISA to test the cytokine levels (IFN-γ,TNF-α,IL-6,IL-17A) in the plasma of SLE patients.And analyzed the relationship between the percentage of DN Tregs and cytokines levels.Results The ratio of DN Tregs in TCRαβ+ T cells was significantly increased in SLE patients compared to healthy donors (t=3.54,P＜0.01).The levels of IFN-γ,TNF-α and IL-6 in plasma of SLE patients were higher than healthy donors (t=2.824,2.085,2.304,P＜0.05).The frequency of DN Tregs was found to correlate with IFN-γ (r=0.52,P=0.02) but not TNF-α (r=0.17,P=0.16) and IL-6 (r=0.47,P=0.49).Conclusion This study reveals frequency of DN Tregs in peripheral blood of SLE patients was higher than healthy controls,the frequency of DN Tregs was also found to correlate with IFN-γ levels,which means that DN Tregs may play an important role in pathogenesis of SLE.

Objective To investigate the usage of antibacterial drug in the department of operation in our hospital for improving the management and proper clinical utilization.Methods 1366 operational cases from our hospital were randomly collected from June 2004 to June 2005 and a comprehensive analysis of the usage of antibacterial drugs was conducted.Results All of the cases were given antibacterial drugs.The rate of preventive usage was 89.0%,among which those given in the period in 1h before operating was only 30.6%,and the other's was given after operating.The therapy time of antibacterial drugs were ranged from 1 to 63 days in different case and the preventive usage were 1 to 16 days.The therapy time of surpass 3 days was 94.7% and surpass 7 days was 53.5% in preventive usage.Prescriptions of more than one kind drug was widespread very much and 2～3 kinds were 87.5%.The wide-table,new-style and high-efficiency antibacterial drugs were the most frequently used in prescription.Conclusions The use of the antibacterial drugs in operational case in our hospital has some problem,especially in scope,opportunity moment,therapy time and union of usage.The management and education about rational usage of antibacterial drugs must be strengthened in order to improve the level of rationality in the clinical application.

BACKGROUND:Osteoblasts occupy an important role in osteogenesis, which mainly come from bone marrow mesenchymal cels, and some transcription factors or local factors may promote the osteogenic differentiation of bone marrow stromal cels.
OBJECTIVE: To study the role of Osx and Satb2 in C2C12cels in the repair process of osteoporosis.
METHODS: Twenty wild-type Sprague-Dawley rats were assigned into normal control group (n=10), sham group (n=5) and osteoporosis group (model group,n=5). Another 10 Osx-KO rats were enroled in the study. Osteoporosis models were established by removal of both ovaries in the model group and Osx-KO group. In the sham group, bilateral ovaries were exposed but not removed. Changes in body mass and femoral bone density were detected in the four groups post operation. C2C12 cels were culturedin vitro, and siRNA-Satb2 and siRNA-Osx were designed. Expressions of Osx and Satb2 and their effects on osteoporosis were observed using cel experiments, gene silencing and western blot assay.
RESULTS AND CONCLUSION:After 12 weeks, the body mass in the model and Osx-KO groups was significantly increased compared with the normal control and sham groups (P< 0.01); the bone density in the model and Osx-KO group was significantly decreased compared with the normal control and sham groups (P < 0.01). Satb2 and Osx were expressed in al the wild-type rats, but their expressions were decreased significantly in the Osx-KO rats (P < 0.001). Additionally, there was no difference in the Runx2 mRNA expression between the two kinds of rats. After silencing, the mRNA expressions of Satb2, Osx, Runx2 and ALP were al inhibited. These findings indicate that in the pathogenesis of osteoporosis, Osx and Satb2 may be protective molecules that have a regulatory role in the osteogenic differentiation, bone formation and repair.

This study was aimed to observe the effects of herbal pair of Semen ziziphi spinosae (SZS) and A lbizia julibrissin flower (AJF) on the quality of life (QOL) among elderly patients with depression. A total of 70 elderly patients with depression were enrolled and randomly divided into two groups. The Chinese medicine group (with 35 cases) was given SZS-AJF decoction, and the western medicine group (with 35 cases) was given venlafaxine hydrochloride sustained-release tablets. The HAMD scale score, QOL Assessment Questionnaire (GQOLI-74), and the Side-Effects Scale Score (TESS) were detected 8 weeks before and after the treatment. The results showed that there was no significant difference on the clinical efficacy between two groups. On the comprehensive assessment of QOL, the physical function dimension, mental function dimension and QOL total score of Chinese medicine group were higher than the western medicine group with significant difference (P < 0.05). There were no significant differences on the material function dimension or social function dimensions between two groups. The HAMD score, physical function dimension, mental function dimension, social function dimension and score of QOL were all higher than the pretreatment score with significant differences in both groups (P < 0.05). The TESS score in Chinese medicine group was lower than the western medicine group. And the main adverse reactions in the Chinese medicines group were nausea and vomiting. It was concluded that the herbal pair of SZS and AJF had antidepressant efficacy. It can improve the QOL among elderly patients with depression.

Objective To summarize the effect of supra-arch branches bypass combined with endovascular aortic repair for aortic diseases.Methods From January 2012 to August 2015,120 cases of thoracic aortic diseases (aortic dissection 103,aortic aneurysm 16,penetrating aortic ulcer 1) received hybrid operation in Guangdong Cardiovascular Institute.Vascular bypass was established among the brachiocephalic arteries,followed by endovascular repair through femoral artery either one-stage or two-stage.Patients were followed up for 3-24 months.Results Technical success was achieved among all the patients.Five patients died after the operation(one patient had retrograde aortic dissection,2 patients had pericardial tamponade,one patient had apnea,and one patient had respiratory and cardiac arrest.The death rate is 4.1％),4 patients had stroke,among them,symptoms were relieved in three patients,one patient was not cured.Total 92 patients were followed-up and had no symptoms of up-limb ischemia or dizziness.CT scan showed bypass graft and endovascular stent patency.6 patients had endoleak (type Ⅰ b 2 cases,type Ⅱ 3 cases,and type Ⅲ 1 case),distal aortic dissection occurred in one patient,three patients had mild contrast agent leakage around the distal endovascular stent,type A aortic dissection occurred in one patient,there were no late stage death.Conclusion Supraarch branches bypass combined with endovascular aortic repair for treating aortic disease is minimally invasive,safe,and can reduce the incidence of postoperative complications.

Objective To explore the effects of miRNA-204 targeted LC3B expression on Ang Ⅱ induced cardiomyocytes hypertrophy.Methods The primary neonatal rat cardiomyocytes served as the research objects and divided into the control group,AngⅡ group,combination-treated group 1 (cardiomyocytes were given Ang Ⅱ stimulation,meanwhile infected by negative control lentivirus vector),combination-treated group 2 (cardiomyocytes were given Ang Ⅱ stimulation,meanwhile infected by lentivirus carrying miRNA-204 overexpression vector) according to different treatments.About 48 h to 72 h after intervention treatment,the cardiomyocyte hypertrophy change was detected by confocal microscopy,the expression of miRNA-204 was analyzed by real time PCR,the protein expression of LC3B was measured by Western blot and targeted gene of miRNA-204 was demonstrated by dual-luciferase reporter assay system.Results Compared with the control group,the cardiomyocyte relative surface area in the Ang Ⅱ group was significantly enlarged,the protein expression of LC3B was significantly increased,the expression of miRNA-204 was upregulated,the differences were statistically significant (P＜0.05).Whereas comparing the combination-treated group 1 with combination-treated group 2,the protein expression of LC3B in the latter was down-regulated and the cell area was reduced (P＜0.05).The further luciferase activity report gene experiment results suggested that miRNA-204 was able to bind to LC3B 3'-UTR and decreased the luciferase activities (P＜0.05),but not to bind its mutated fragment for inactivating luciferase activity(P＞0.05).Conclusion miRNA-204 is able to inhibit Ang Ⅱ induced cardiomyocytes hypertrophy,its action is realized by targeting the expression of LC3B.

Objective To explore the effects of miR-34a and the alteration of AMPK/mTOR signal pathway on angiotensin (Ang)Ⅱ-stimulated cardiomyocytes hypertrophy. Methods Neonatal rat cardiomyocytes were cultrued in vitro and were divided into 3 groups:negative control for lentivirus carrying miR-34a group (NC), AngⅡplus lentivirus carrying negative control group (AngⅡ+NC) and AngⅡplus lentivirus carrying miR-34a group (AngⅡ+miR-34a). The relative cell area was detected by confocal microscopy. The expression of miR-34a and hypertrophy-related genes (ANP and β-MHC) were analyzed by real time PCR. The AMPK/mTOR signal pathway was measured by Western blot assay. Results Compared to NC group, the relative cell area was increased in AngⅡ+NC group (P<0.05). But compared with AngⅡ+NC group, the relative cell area was decreased in AngII+miR-34a group (P<0.05). Moreover, compared with NC group, the expression of miR-34a was decreased, and the expression of hyperthophy-related genes(ANP and β-MHC) was up-regulated in AngⅡ+NC group. However, the expression of miR-34a was decreased, and the expression of hyperthophy-related genes (ANP and β-MHC) was down-regulated (P<0.05). Finally, compared to NC group, the ratio of phosphop-AMPK/AMPK was significantly induced in AngII + NC group, but the ratio of phosphop-mTOR/mTOR was significantly decreased (P<0.05). However, compared to AngⅡ+NC group, the ratio of phosphop-AMPK/AMPK was significantly decreased in AngII + miR-34a group, but the ratio of phosphop-mTOR/mTOR was significantly increased (P<0.05). Conclusion miR-34a is able to inhibit myocardial hypertrophy of neonatal rat cardiomyocytes, and its mechanism is partly carried out by the alteration of the signal pathway of AMPK/mTOR.

Objective To explore the nuclear emergency nursing rescue process, and ensure safety and effectiveness of implementation of nuclear emergency nursing rescue. Methods Based on the analysis of the existing national standards, and on the basis of literature review, the method of Delphi was used to collect 23 experts′suggestions, and to make a preliminary draft nuclear emergency nursing rescue process on site. Results The experts' enthusiasm was very high, and the degree of authority (Cr) coefficient was 0.91. A on-site rescue unit partition graph, and two rescue unit process that were preliminary sorting and decontamination, and an on-site rescue process had been drew up. Conclusions After two rounds of expert enquiry, the emergency nursing rescue process is reasonable. And the study could provide objective basis for the implementation of the nuclear emergency nursing rescue.

Objective To evaluate vascular surgery and interventional technique applied in Takayasu's arteritis. Methods Data of 26 patients of Takayasu's arteritis admitted between January 2006 and December 2009 were retrospectively analyzed. The sex ratio(M/F) was 1: 4. 2, age averaged at (27±15)y. There were 16 cases of type Ⅰ , 7 cases of type Ⅱ and 3 cases of type Ⅲ according to Lupi-Herrera classification. 25 patients received surgery including 16 patients undergoing pecutaneous transluminal angioplasty operations, 9 patients doing traditional bypass surgery, and one patient was treated conservatively. Results 23 case-times of percutaneous transluminal angioplasty (PTA) were performed in 16 patients, including 12 cases of balloon angioplasty and 4 cases of stent angioplasty. Four significantly stenotic and occluded carotid arteries were revascularized successfully in 5 patients. Thrombosis of the carotid artery was found in one patient after balloon angioplasty. There were 4 patients in which repeated PTA treatment up to a total of 11 times were needed to guarantee vessel patency. Open surgery succeeded in 9 patients, and clinical symptoms were relieved in all cases during peri-operative period. 22 patients were followed up for 12 -46 months,one patient died of cerebral hemorrhage 3 months post-operation, one patient was found pseudoaneurysm at anastomotic stoma, and 2 patients suffered from anastomotic restenosis.Conclusions Vascular surgery played important role in the therapy of Takayasu's arteritis. PTA can be used repeatedly. Surgical bypass operation is difficult in technology, and can be used in cases that fail to response to PTA or in patients with severe cerebral ischemia.