Liver is one of the most predilection sites of hematogenous metastasis of a variety of malignances,especially for gastrointestinal tumors.Surgical resection was the first choice for the treatment of liver metastases,while it could not apply to patients who had multiple metastatic lesions or other organs involvement.Interventional technique has been widely recognized for the advantages of minimal trauma,little pain,quick recovery and obvious efficacy.

Objective To study the effect of three kinds of disinfection liquid,namely chlorine dioxide,silver ion and BIOCIDE,on sterilization of Legionella pneumophila.Methods The suspended quantified disinfection test was conducted by using 7 type of Legionella p neumophila,0.5 ml of bacterial suspension and 4.5 ml disinfection liquid were mixed for certain period, the normal saline was used as the control.1.0 ml of the above liquid or its dilution was incubated with BCYE for 72 h in CO_2 and 35 ℃,the colony count and sterilization rate were calculated.Results The sterilization rate of chlorine dioxide was 6.04%,7.87% and 18.18% at the sterilization time of 0.5,1 and 2.5 h respectively.The sterilization rate of silver ion was 52.61%,99.46% and 99.80% at the time of 0.5,1,1.5 and 2.0 h respectively.As for BIOCIDE,the sterilization rate was 25.28%,93.62%,96.60% and 99.81% at the time of 0.5,1,1.5 and 2 h respectively.Conclusion Compared with chlorine dioxide,silver ion and biological disinfectant has a better sterilization effect on Legionella pneumophila.

Objective To analyze the diagnosis and prognosis value of abdominal CT scans in patients with acute pancreatitis complications.Methods 151 cases with acute pancreatitis were selected.The relationship between abdominal CT performances and the common complications and death in patients was analyzed.The prognosis of patients with different Balthazar CT severity index (CTSI) grade was compared.Results The complication rate of patients with CT signs of fatty liver, pleural effusion, liver gap effusion, adrenal gland involvement (AGI), penirenal space involvement (PSI) and gastric bare area involvement (GBAI) was significantly higher than that of patients with negative CT findings above (P<0.05).With CTSI grading increasing, the patient''s fasting time, heating time, hospital stay, recovery time of blood amylase were extended, and the incidence of pseudo cyst, transit surgery, organ failure and death was gradually increasing (P<0.05).Conclusion Severe fatty liver, AGI, GBAI, PSI and liver gap effusion are risk factors for acute complications and death in patients with pancreatitis.

OBJECTIVETo construct a recombinant adenovirus expression vector containing the anti-oncogene PTEN and to investigate the effects of the PTEN gene on the proliferation of prostate cancer PC-3 cells and the expressions of cyclin D1 and p21 in the PC-3 cells.

METHODSThe PTEN gene was amplified from the rat hippocampus by RT-PCR and cloned into the shuttle plasmid pEN-TR2A. The plasmids were constructed and amplified in 293A cells. Prostate cancer PC-3 cells were cultured in vitro and infected with the adenoviral vector carrying the PTEN gene (Ad-PTEN). The up-regulation of the PTEN protein was measured by indirect immuno-fluorescence assay; the expressions of PTEN, cyclin D1 and p21 in the cells infected with Ad-PTEN and Ad-LacZ were determined by

RESULTSThe Western blot; and the effect of PTEN on the cell proliferation was detected by MTT assay and plate colony formation. recombinant adenoviral vector Ad-PTEN was successfully constructed. Western blot showed a significantly increased expression of the PTEN protein in the PC-3 cells infected with Ad-PTIEN (0.215 +/-0.065) as compared with that in the control ([0.052 +/-0.009], t = 4. 30, P <0.05) and the Ad-LacZ group ( [0. 056 +/- 0.008 ] , t =4.21, P <0.05). The expression of cyclin D1 was significantly lower in the Ad-PTEN-infected PC-3 cells (0. 256 +/- 0. 072) than in the control ( [0. 502 +/- 0. 087 ], t = 3.77, P < 0.05) and the Ad-LacZ group ([0.498 +/-0.081] , t =3.87, P <0.05), while the expression of p21 remarkably higher in the Ad-PTEN-infected PC-3 cells (0.589 +/-0. 076) than in the control ([0. 146 +/-0.026] , t = 9.55, P<0. 01) and the Ad-LacZ group ([0. 163 +/-0. 024] , t = 9.26, P <0.01). Ad-PTEN significantly inhibited the growth of the PC-3 cells (21.98%) at 48 h (t = 6.80, P <0.01). The colony formation rate of the PC-3 cells was (37.4 +/-4. 18)% in the Ad-PTEN group, significantly lower than (54.9 +/-4.81)% in the control (t =4.76, P<0.01) and (56.5 +/- 5.42)% in the Ad-LacZ group (t=4.83, P<0.01).

CONCLUSIONThe expression of PTEN induced by Ad-PTEN can significantly inhibit the proliferation of PC-3 cells, down-regulate the expression of cyclin D1, and up-regulate the expression of p21.

Adenoviridae ; genetics ; Animals ; Cell Line, Tumor ; Cell Proliferation ; Cyclin D1 ; metabolism ; Cyclin-Dependent Kinase Inhibitor p21 ; metabolism ; Humans ; Male ; PTEN Phosphohydrolase ; genetics ; Prostatic Neoplasms ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo compare the biomechanical performances of different wires and cable fixation devices in posterior instrumentation for atlantoaxial instability, and test the effect of different fixation strengths and fixation approaches on the surgical outcomes.

METHODSSix specimens of the atlantoaxial complex (C0-C3) were used to establish models of the normal complex, unstable complex (type II odontoid fracture) and fixed complex. On the wd-5 mechanical testing machine, the parameters including the strength and rigidity of anti-rotation, change and strength of stress, and stability were measured for the normal complex, atlantoaxial instability complex, the new type titanium cable fixation system, Atlas titanium cable, Songer titanium cable, and stainless wire.

RESULTSThe strength and rigidity of anti-rotation, change and strength of stress, stability of flexion, extension and lateral bending of the unstable atlantoaxial complex fixed by the new double locking titanium cable fixation system were superior to those of the Songer or Atlas titanium cable (P<0.05) and medical stainless wire (P<0.05). Simultaneous cable fastening on both sides resulted in better fixation effect than successive cable fastening (P<0.05). Better fixation effect was achieved by fastening the specimen following a rest (P<0.05).

CONCLUSIONSThe fixation effects can be enhanced by increased fastening strengths. The new type double locking titanium cable fixation system has better biomechanical performance than the conventional Songer and Atlas titanium cables. Fastening the unstable specimens after a rest following simultaneous fastening of the specimen on both sides produces better fixation effect.

Atlanto-Axial Joint ; physiopathology ; surgery ; Biomechanical Phenomena ; Bone Wires ; Cadaver ; Humans ; Internal Fixators ; Joint Instability ; physiopathology ; surgery ; Orthopedic Fixation Devices

OBJECTIVETo understand the characteristics of HIV/AIDS patients with late diagnosis and find the factors associated with late HIV detection.

METHODSHIV late diagnosed patients and early diagnosed patients, which were identified and classified by definition in advance, were selected from the case reporting database of HIV/AIDS Comprehensive Response Information Management System in eight counties of four provinces (Zhumadian, Nanyang, and Zhoukou of Hennan province; Liuzhou and Lingshan county of Guangxi autonomous region; Guangzhou and Shenzhen of Guangdong province; Dehong of Yunnan province) between January 1, 2009 and June 30, 2010. A total of 3912 eligible patients were investigated, including 2496 late diagnosis and 1416 early diagnosis. The structured questionnaires were used to obtain information on behaviors, HIV detection history and reason of late detection for all eligible HIV/AIDS patients. Late diagnosed patients were defined by CD4 T-cell counts less than 200 cells/mm(3) or diagnosis as AIDS within the reported year after the first HIV positive test. The univariate and multivariate logistic regression methods were used to analyze the characteristics of HIV/AIDS late diagnosed patients.

RESULTSOnly 14.2% (350/2469) of them have ever had the awareness of "to go for HIV testing", 68.8% (150/218)of which did not put it into practice within one month because of discrimination and stigma. Among those HIV late diagnosed patients without the awareness of "to go for HIV testing", the proportions of "never worried about HIV infection" or "never heard of AIDS" were 69.7% (1476/2116) and 18.1% (383/2116), respectively. When those HIV late diagnosed patients visited health settings because of AIDS related symptoms, only 40.0% (590/1475) of them received the HIV testing service. Furthermore, 54.5% (322/590) of those received HIV testing were not informed the results. Compared with early diagnosed patients, patients with late diagnosis were over 50 years old (OR = 4.14, 95%CI: 3.09 - 5.55), primary school education (OR = 1.29, 95%CI: 1.10 - 1.52) and illiteracy (OR = 2.15, 95%CI: 1.25 - 2.82), Routes of transmission from former illegal blood or plasma (OR = 2.91, 95%CI: 2.27 - 3.74) and transfusion of blood/blood products (OR = 2.79, 95%CI: 2.11 - 3.68). Late diagnosed patients were identified mainly from voluntary counseling and testing (45.4%, 1130/1528) and medical institutions (38.3%, 954/1469).

CONCLUSIONThe main reasons for late diagnosis of HIV infection are low initiative of HIV testing and discrimination and stigma. Furthermore, the low awareness of medical institutions to actively provide HIV testing affects the early diagnosis of HIV infections.

Acquired Immunodeficiency Syndrome ; diagnosis ; epidemiology ; Adult ; China ; epidemiology ; Counseling ; Delayed Diagnosis ; Female ; HIV Infections ; diagnosis ; epidemiology ; Humans ; Male ; Mass Screening ; Middle Aged ; Risk Factors

BACKGROUND: Periprosthetic joint infection (PJI) is a serious and catastrophic complication after hip or knee arthroplasty. With aging population increasing, more patients will undergo hip or knee arthroplasty. Studies have shown that the risk for PJI following arthroplasty is different in different populations. OBJECTIVE: To evaluate the risk factors for PJI after hip or knee arthroplasty in Mainland of China through a meta-analysis, thereby providing reference for the prevention and control of postoperative PJI. METHODS: A computer-based search of WanFang, CNKI, VIP, CBM, PubMed, Cochrane, Embase and Medline databases was performed and the literatures concerning the risk factors for PJI after hip or knee arthroplasty in Mainland of China published before September 2016 were collected by manual retrieval and retrospective approach. All the literatures were screened based on the inclusion and exclusion criteria, followed by data extraction and analyzed on RESULTS AND CONLUSION: (1) Finally 14 literatures were included, including 417 patients with PJI. (2) The results of the meta-analysis showed that the risk factors for PJI after hip or knee arthroplasty including the complication of diabetic mellitus, long-term use of steroids, long operation time (> 90 minutes), age (> 65 years), and history of hip or knee Stata 12.0 software. surgery. (3) To conclude, PJI after hip or knee arthroplasty is related to multiple factors, so physicians should pay attention to these factors to reduce the incidence of PJI.

OBJECTIVETo analyze efficacy of radiotherapy for adult patients with Langerhans cell histiocytosis (LCH).

METHODSClinical features and efficacy of radiotherapy for biopsy-proven adult patient with LCH from January 2000 to October 2012 in our hospital were retrospectively analyzed.

RESULTSSeventeen (11 male and 6 female) adult LCH patients with a mean age of 31 (18-56) years old were treated by irradiation, all patients presented as single-system disease. The mean duration from diagnosis to irradiation was 8.3 (0-108) months. Although 12 of 17 patients (70.6%) had short-term response to radiotherapy, all patients but one (94.1%) progressed during long-term follow-up, the mean progression-free survival (PFS) was 14 (0-131) months. Of the progressed patients, one relapsed in situ, the remaining 15 patients progressed outside the irradiated region. Thirteen patients (76.5%) eventually progressed to multisystem disease.

CONCLUSIONThough radiotherapy for LCH in adults produced a high short-term response up to 70.6%, most of patients eventually progressed in situ or outside the irradiation region during long-term follow-up.

Adolescent ; Adult ; Disease Progression ; Disease-Free Survival ; Female ; Histiocytosis, Langerhans-Cell ; radiotherapy ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Treatment Outcome ; Young Adult

In order to measure the shelf life of whole blood stored at above 4 degrees C and provide experimental data for blood preservation and transportation in battle fields, 200 ml whole blood was collected from each of the 10 donors and anticoagulated by CPDA or ACD, then 50 ml whole blood was separated from each one and marked as control group, the rest was marked as test group. The control group was stored at 4 degrees C and RBC ATP concentrations was measured at the end of its shelf life which signed as critical ATP. The test group was stored at above 4 degrees C condition, some items as ATP, FHb (free hemoglobin), serum K(+) and germiculture were tested daily and ensured all of them eligible. When RBC ATP decreased to the level of critical ATP, the time of preservation was considered as shelf life. The results showed that at temperatures from 10 to 33 degrees C, the shelf life of CPDA whole blood ranges from 2.5 days to 18 days, while shelf life of ACD whole blood ranges from 1 day to 13 days. It is concluded that CPDA whole blood stored at above 4 degrees C condition can be sent to the front hospital in effective shelf life so that the wounded can be cured in time.
Adenosine Triphosphate ; blood ; Blood Preservation ; Erythrocytes ; chemistry ; Humans ; Temperature ; Time Factors

OBJECTIVETo assess impact of different brain protection techniques upon postoperative temporary neurological dysfunction in aortic surgery with the aid of deep hypothermic circulatory arrest.

METHODSFrom January 2003 to December 2005, 78 patients who met the inclusion criteria entered the present cohort, 43 of whom were under the aid of deep hypothermic circulatory arrest plus retrograde cerebral perfusion (RCP group) and the other 35 under deep hypothermic circulatory arrest plus selective antegrade cerebral perfusion (SCP group). The present and grades of postoperative temporary neurological dysfunction were assessed by independent observers with the same criterion. The impact of duration of deep hypothermic circulatory arrest upon the postoperative temporary neurological dysfunction was also evaluated.

RESULTSThe incidence of postoperative temporary neurological dysfunction was significantly higher in the RCP group than in the SCP group (15, 34.9% vs. 4, 11.4%, P<0.05). And long duration of deep hypothermic circulatory arrest (more than 50 min) has a negative impact on the postoperative temporary neurological dysfunction rate.

CONCLUSIONSApplying selective antegrade cerebral perfusion as the brain protection technique and shortening the duration of deep hypothermic circulatory arrest can reduce the incidence of temporary neurological dysfunction and preserve cerebral function more effectively.

Adult ; Aged ; Aged, 80 and over ; Aorta ; surgery ; Brain ; blood supply ; physiopathology ; Circulatory Arrest, Deep Hypothermia Induced ; adverse effects ; Female ; Humans ; Male ; Middle Aged ; Nervous System Diseases ; etiology ; prevention & control ; Perfusion ; methods ; Postoperative Complications ; etiology ; prevention & control