Objective To establish the CT criteria of quantitative diagnosis for liver steatosis by means of studying the CT features of fatty liver cases proven histologically. Methods Twenty-eight cases of fatty liver were underwent non-enhanced CT scan, and the attenuation of liver parenchyma was measured. To differentiate the degree of fatty liver, the mean CT value and the relative density of hepatic vessels were observed. The quantitative diagnosis was made according to the CT number threshold and the criteria of relative density of hepatic vessels, respectively. Results Among the 28 cases, there were 17 cases of mild steatosis with mean CT number of 46 HU (32-65 HU), 7 cases of middle degree fatty liver with mean CT number of 28 HU (15-38 HU), and 4 cases of sever fatty liver with mean CT number of 0.2 HU (-7-11 HU). For the relative density of hepatic vessels, 16 of the 17 cases of mild fatty liver had a appearance of hepatic vessels immersion and 1 mild case had reverse hepatic vessels display, 6 of 7 middle degree cases had reverse hepatic vessels display with 1 case having the appearance of hepatic vessels immersion, and all the 4 case of sever steatosis had the appearance of reverse hepatic vessels display with sharp contrast between vessels and the liver parenchyma. The accuracy of quantitative diagnosis was 65.9% and 93.1% by means of criteria of CT number threshold and relative density of hepatic vessels, respectively (? 2=7.153,P

Regulator of G-protein signaling 5 (RGS5) belongs to RGS family,which can negatively regulate the conduction of this signaling pathway.RGS5 mainly expresses in vascular pericyte,and is closely related to the occurrence,development and maturation of the blood vessels.Loss of RGS5 results in pericyte maturation,tumor vascular normalization,and these changes can improve the curative effect combined with chemotherapy and immunotherapy,indicating that RGS5 may become a new target of anti-tumor treatment.In addition,RGS5 involves in tumor metastasis and apoptosis,which can improve antineoplastic effect by inducing tumor cells apoptosis.

Objective:To understand the influence of neoadjuvant chemotherapy combined with psychological and ethical intervention on mood and life quality of patients with cancer. Methods: The 120 patients with locally advanced breast cancer were randomly divided into control group ( neoadjuvant chemotherapy group) and interven-tion group ( neoadjuvant chemotherapy combined with psychological ethics intervention group) , Chemotherapy and after chemotherapy respectively adopt Zung Self -Rating Depression Scale ( SDS ) , Zung Self -Rating Anxiety Scale (SAS) and Quality of Life Core Scale (QLQ-C30) as an investigative tool, mood and quality of life of the patients were assessed. The patients' mood and life quality were investigated. Results: Emotional state intervention group patients more significantly than control group patients improved (P<0. 01) and improve life quality. Con-clusions:Neoadjuvant chemotherapy for localized breast cancer patients with psychological ethics intervention can effectively reduce the patient's anxiety and depression, and improve the life quality of patients.

purpose To construct the expression vector of Hexastatin gene,to express and to purify the recombinant protein for further activity research.Methods The human Hexastatin gene was isolated by RT-PCR from EC9706 cells total RNA and cloned into pMDl8-T for sequencing.Then the Hexastatin gene was subcloned into pMAL-c4x expression vector and induced to express by IPTG.The recombinant fusion protein was purified with Amylose Resin Heads.Results RT-PCR product was about 687 bp and its sequence was the same as that of Hexastatin reported.The recombinant protein was expressed in E.coli BL21 with high level and the soluble protein accounted for 24.8% of the total bacterial protein,The purification of recombinant protein purified with Amylose Resin Heads reached more than 90%.Conclusion The cloning,expression and purification of human Hexastatin have laid a foundation for its anti-angiogenesis therapy for tumor.

Objective To compare the difference in cardiac injuries between asphyxia and ventricular fibrillation modes in different periods after cardiac arrest (CA).Methods The model was established in Cardiopulmonary Resuscitation Lab,Sun Yat-sen University.A total of 35 male SD rats were used to produce the asphyxia or ventricular fibrillation (VF) cardiac arrest models randomly.Both of the two modes were induced 8 minutes cardiac arrest.The myocardial HE stains,mitochondrial respiratory control ratio (RCR),and echocardiography were observed at 4 h,24 h and 72 h after ROSC (restoration of spontaneous circulation).The results were expressed as (-x ± s),t test was performed to compare between two groups,and one way analysis of variance was used to compare multiple groups.P ＜ 0.05 was considered as significant difference.Results HE stains showed damages were more serious in the VF mode than in asphyxia mode at 4 h,and both of them had a disorderly-arranged myocardium at 72 h.RCR in VF mode became worse at 4 h,and RCR resumed at 24 h in both modes without significant difference compared with the sham operated rats.The echocardiography showed VF mode had a lower left ventricular ejection fraction (LVEF) than asphyxia mode at 4 h (29.68％ vs.42.16％,P =0.03),and there was no difference in LVEF between VF mode and the sham operated rats at 24 h,however no difference in LVEF between the asphyxia and sham operated rats at 72 h.Both of them had a thicker left ventricular anterior wall than the sham operated rats at 72 h (2.41 mm vs.1.72 mm,P=0.013; 2.61 mmvs.1.72 mm,P=0.007),and there was no significant difference between them.Conclusions The ventricular fibrillation mode has a more severe injuries in early period,but it recovers sooner than asphyxia one.Both of two groups get compensatory left ventricular hypertrophy in later period of ROSC.

Objective To detect the expression of Bmi-1 and p16 gene in transitional cell carcinoma of bladder(TCC) tissue and explore its clinical significance.Methods The expression of Bmi-1 and p16 gene were detected by real-time quantitative polymerase chain reaction in 61 cases of TCC tissue and 12 cases of normal bladder tissue.Results The expression of Bmi-1 gene in TCC tissue was significantly higher than that in normal bladder tissue (0.242 ± 0.129 vs.0.031 ± 0.011),and the expression of p16 gene was significantly lower than that in normal bladder tissue (0.059 ± 0.021 vs.0.165 ± 0.029),there was significant difference (P ＜ 0.05).The expression of Bmi-1 and p16 gene were highly correlated with pathological grades,clinical stages and tumor recurrence (P ＜ 0.05 or ＜ 0.01).But there were not correlated with age and gender (P ＞ 0.05).There was a negative correlation between the expression of Bmi-1 gene and p16 gene in TCC tissue(rs =-0.714,P＜ 0.05).Conclusions Bmi-1 gene high expression and p16 gene low expression may be involved in the occurrence and development process of TCC.Bmi-1 may decrease the expression of p 16 gene in some ways,and then lead to the occurrence and development of TCC.

Objective To explore the clinical significance of T lymphocyte subsets and NK cells' detection in peripheral blood of patients with non-Hodgkin' s lymphoma (NHL).Methods 62 newly diagnosed NHL and 30 healthy adults were enrolled for analyzing.T lymphocyte subsets and NK cells were deteced by flow cytometry and compared between different groups according to age,sex and pathology.Multiple linear regression was used to analyze the correlation among the levels of T lymphocyte subsets and NK cells and several clinical factors,such as clinical stage,IPI and B symptoms.Results The proportions of CD3,CD4 and NK cells in peripheral blood of NHL group [(64.13±19.83) ％,(27.10±8.20) ％,(13.51± 10.59) ％] were significantly lower than those of normal control [(65.78±10.69) ％,(31.95±12.74) ％,(18.76± 7.36) ％] (P ＜ 0.05),while the proportions of CD8 and Treg cells in peripheral blood of NHL [(32.15±13.83) ％,(10.44±3.00) ％] were significantly higher than those of normal control [(29.25±12.35) ％,(7.51±4.36) ％] (P ＜ 0.05).In NHL,the proportions of CD3 and NKT cells [(67.06±19.24) ％,(4.91±3.69) ％] in ≤60 years old group were significantly higher than those in ＞ 60 years old group [(59.18±20.33) ％,(4.89±3.05) ％] (P ＜ 0.05).The proportions of Treg cells in T-NHL was significantly higher than that in B-NHL [(8.17±6.41) ％ vs (7.11±2.53) ％] (P ＜ 0.05).The proportions of CD3,CD4,NK and NKT cells in peripheral blood of NHL were significantly correlated with clinical stage (P ＜ 0.05),that of CD8 cells were significantly correlated with IPI (P =0.000),that of Treg cells were significantly correlated with IPI and B symptoms (P ＜ 0.05).Conclusion The cellular immune is suppressed in NHL patients.The proportions of T lymphocyte subsets and NK cells in peripheral blood of patients with NHL are different between different groups according to age,sex and pathology.The correlations among that and clinical factors need to be further explored.

Objective To investigate the change of CD_4~+CD_(25)~(high)CD_(127)~(low)> regulatory T cells (Trcg cells) sub-group level in peripheral blood of non-Hodgkin lymphama (NHL) patients, and to explore its clinical significance. Methods Treg cells levels in peripheral blood of lymphoma patients and normal were detected by flow cytometry, followed by statistical analysis. Results In the 65 cases of NHL patients, Treg cells in peripheral blood were (6.72±1.38) %, higher than that in the normal control group (5.65±0.68) % (P <0.05). Percentage of Treg cells are significantly different between clinical stages and normal: [P <0.05, normal control group (5.65±0.88) %, Ⅰ -Ⅱ period (6.08±1.18) %, Ⅲ-Ⅳ period (6.95±0.85) %]. The percentage of Treg cells are also different among pathological types of patients and normal [P <0.05, normal control group (5.65± 0.68) %. The percentage of Treg diffuse large B-cell lymphoma (5.83±0.95) % and other subtypes of lymphoma (7.83±1.76) %]were observed. It is not sure that Treg cells percentage among patients with different levels of lactate dehydrogenase and normal are significantly different. [P >0.05, normal control group (5.65±0.68) %, patients with normal LDH group (6.97±1.20) %, patients with lactate dehydrogenase (6.54±1.02) %]. Conclusion Treg cells induced by tumor and could inhibit the immune cells, Treg cells percentage in peripheral blood of tumor patients is higher than that the normal control group, and increased with the clinical staging, so the percentage of Treg cells may serve as a clinical indicator to evaluate tumor load.

Objective To investigate the treatment of urinary tract obstruction after kidney transplantation, and to introduce the novel ‘antegrade percutaneous urinary tract throughout guidance technique’ with guide wire in selected patients. Methods 43 cases of renal transplantation patients due to urinary tract obstruction (ureteral stenosis and hydronephrosis in 24 cases, urinary calculi with or not ureteral stenosis in 19 cases) received endourological treatment. Retrograde pathway was tried firstly, if failed, antegrade pathway was adopted with‘antegrade percutaneous urinary tract throughout guidance technique’, 18 Fr percutaneous tract was established if necessary, endoscopy was needed in antegrade or combine with retrograde pathway. Results Of the 43 patients, 9 (20.9 %) patients were managed directly through the retrograde ureteroscopy, 28 (65.1 %) patients were managed with anterograde percutaneous technique in 18 Fr tract, 6 (14.0 %) patients were treated with ‘antegrade percutaneous urinary tract throughout guidance technique’. Operation time was (72.0 ± 16.0) (45 ~ 95) minutes. Postoperative stone clearance rate of 89.5 % (17/19). Of 32 cases with ureteral stricture, 6 (6/32, 18.8 %) cases were cured after one time of dilation and JJ stent indwelling for 2 months, 18 (56.3%) cases with stable hydronephrosis after 2-3 times of dilation and JJ stent indwelling, 5 cases (15.6 %) needed long-term repeated stent indwelling for drainage, 3 (9.4%) cases required nephrostomy tube drainage. Conclusion Minimally invasive treatment of urinary tract obstruction after renal transplantation is effective. Antegrade percutaneous urinary tract throughout guidance technique provided a powerful guarantee for retrograde operation and avoided the bleeding risk following percutaneous renal surgery, when combined with flexible ureteroscopy, urinary calculi in patients with kidney transplantation can be effectively managed with little trauma.

Based on untermolecular splut G-quardruplex-hemun DNAzymes, a buosensor for detectuon of sulver uons and cysteune was developed wuth magnetuc nanopartucles ( MNPs ) as carruer to ummobuluze the DNA probes. Sunce Ag+ chelates guanune bases at the bundung sutes whuch are unvolved un G-quadruplex formatuon, the presence of Ag+ may unhubut G-quartets connected by Hoogsteen-type base paurung and dusrupt G-quadruplexes structures, whuch decreases the peroxudase actuvuty of G-quadruplex-hemun DNAzymes that effucuently catalyze H2 O2-meduated reactuons, such as the oxudatuon of ABTS ( 2, 2'-azunobus ( 3-ethylbenzothuozolune)-6-sulfonuc acud) by H2 O2 . Moreover, un the presence of L-cysteune, ut was used as a competutor by the strongly Ag-S to release Ag+ from G-ruch olugonucleotudes, promotung the reformatuon of G-quadruplexes and uncreasung the peroxudase actuvuty, whuch catalyzes the ABTS-H2 O2 reactuon system. In thus experument, the effucuent separatuon from real sample was achueved usung magnetuc nanopartucles as a solud phase carruer to effectuvely uncrease the detectuon sensutuvuty and decrease the background sugnal. Under the optumum condutuons, a hugh lunear relatuonshup between the UV absorbance and the Ag+ concentratuon was establushed un the range of 0. 5-100 nmol/L wuth a detectuon lumut of 0. 2 nmol/L. The calubratuon curve of cysteune was udentufued un the range from 0. 1 to 80 nmol/L and the detectuon lumut was as low as 0. 04 nmol/L.