Objective To systematically review the diagnostic value of microRNA(miRNA) quantitation in breast cancer .Meth-ods Literatures about miRNA and breast cancer diagnosis were selected by retrieving Medline ,Embase and Cochrane Library .Ac-cording to the inclusion and exclusion criteria ,the literatures were independently screened ,and a 2 × 2 contingency table was con-structed .Quality of literatures was assessed by quality assessment of diagnostic accuracy studies(QUADAS) .Statistical analysis was performed by employing Meta-Disc 1 .4 software and STATA 11 .0 .Results 16 studies were included ,which contained 1 303 patients and 711 control samples .There were threshold effects among these studies (the spearman′s correlation coefficient was-0 .758 ,P=0 .001) .A random effects model was used for meta-analysis .The summary sensitivity ,specificity ,positive likelihood ratio ,negative likelihood ratio ,and diagnostic odds ratio for miRNA in breast cancer diagnosis were 0 .77(95% CI:0 .75 -0 .79) , 0 .77(95% CI:0 .74-0 .80) ,4 .19(95% CI:2 .79-6 .30) ,0 .25(95% CI:0 .19-0 .35) ,19 .91(95% CI:9 .68-40 .95) .The area un-der curve of SROC was 0 .895 0 .Conclusion These results suggest that miRNAs have potential value to diagnose breast cancer . However ,effective diagnosis of breast cancer still needs to be conducted with assistance of clinical findings and traditional lab inves-tigations .

Objective To explore the relative expression of plasma miR-199a-5p and miR-200c-3p in gastric adenocarcinoma cancer(GAC) patients and its clinical value.Methods Case-control study was used in this research.The relative expression of plasma miR-199a-5p and miR-200c-3p from 47 GAC patients and 50 healthy controls were determined by RT-PCR ( TaqMan Probe method).Meanwhile, the association with age, gender, tumor location, size, degree of differentiation, TNM stage, lymph node metastasis and other clinical pathological parameters were analyzed.The expression of these two miRNAs in plasma of 30 GAC patients during preoperation was compared with their expression 6-8 days after radical surgery.The sensitivity and specificity of plasma miRNAs expression for the diagnosis of GAC were analyzed using the receiver operating characteristic ( ROC ) curve.SPSS20.0 statistical software was used for statistical analysis.T-test, paired t-test and one-factor ANOVA were used for normal distribution of quantitative data.Results The plasma level of miR-199a-5p in GAC patients was significantly lower(1.05 ±0.22) (t =3.058,P =0.003), while miR-200c-3p was significantly higher(15.15 ±3.02) (t =-2.854,P=0.006), when they were compared with those in controls(26.80 ±8.38, 3.39 ±0.87).Low miR-199a-5p expression in GAC patients were associated with lymph node metastasis ( F =4.725, P =0.029) and the differentiation degree of gastric cancer(F=3.854,P=0.032).The relative expression of miR-199a-5p in postoperative plasma was significantly increased(t=-3.814,P=0.001), but the relative expression of miR-200c-3p was significantly reduced when compared to the preoperative samples(t=2.978, P=0.006).Area under the ROC curve of miR-199a-5p, miR-200c-3p and combined miR-199a-5p and miR-200c-3p were 0.692, 0.792 and 0.798, the sensitivity and specificity were 87%,97%,92.5% and 43%,54%, 65%, respectively.Conclusion Combined detection of miR-199a-5p and miR-200c-3p in plasma has a higher sensitivity and specificity than the conventional tumor marker CEA and CA19-9, and may be a useful combination for gastric cancer diagnosis.

OBJECTIVETo establish osteoblast model, primary cilla model was removed by chloral hyrate, observe effects of osteoblast primary cilla moved on enhancing ALP staining and calcified nodules staining in electromagnetic field.

METHODSThree 3-day-old male SD rats weighed between 6 and 9 g were killed, cranial osteoblast was drawed and adherencing cultured respectively. Cells were subcultured and randomly divided into 4 groups until reach to fusion states. The four groups included chloral hydrate non-involved group (control group), 2 mM, 4 mM and 8 mM chloral hydrate group, and cultured in 37 °C, 5% CO2 incubator for 72 h. Morphology of primary cilla was observed by laser confocal scanning microscope, and incidence of osteoblast primary cilia was analyzed by Image-Pro Plus 6.0 software. Cells in the correct concentration group which can removed cillia most effectively were selected and divided into 3 groups, including control group (C), Electromagnetic fields group (EMFs), and EMFs with 4 mM chloral hydrate group. DMEM nutrient solution contained 10%FBS were added into three groups and cultured for 9 days and formation of ALP were observed by histochemical staining of alkaline phosphatase. After 12 days' cultivation, formation of mineralization nodes was observed by alizarin red staining.

RESULTSCompared with control group and 2mM chloral hydrate group,4 mM chloral hydrate group could effectively remove osteoblast primary cilla (P<0.01). Removal of osteoblast primary cilla could weaken the formation of ALP and mineralization nodes in osteoblast in EMFS. Compared with EMFs group, the area of ALP and mineralization nodes in EMFs with 4 mM chloral hydrate group were decreased obviously (P<0.01).

CONCLUSION4mM chloral hydrate could effectively remove osteoblast primary cilia. Primary cilla participate in EMFs promoting formation of ALP and mineralization nodes in osteoblast and provide new ideas for exploring mechanism of EMFs promoting osteoblast maturation and mineralization.

Alkaline Phosphatase ; metabolism ; Animals ; Cell Culture Techniques ; instrumentation ; methods ; Cells, Cultured ; Chloral Hydrate ; pharmacology ; Cilia ; drug effects ; enzymology ; physiology ; Male ; Osteoblasts ; cytology ; enzymology ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo study the bone state with ultimate stress by examining biomechanical distribution of upper femur in Chinese, in order to accumulate more experiences for clinical work.

METHODSTotally 60 Chinese femurs from fresh cadavers were randomly divided into two groups. All the femurs were cleaned, and the body age ranged from 36 to 72 years old, averaged 56.4 years, including 41 from males, and 19 from females. These two groups underwent mechanical stress and bending stress tests. Special mechanical laboratory and machines were used to get the information. Results about the loading value at each testing point under stress were collected.

RESULTSThe four faces of the upper femur suffered different stress under external forces. The bone on upper femur can tolerate more mechanical stress than bending stress. Medial and lateral region of the femur neck and the rear side of the small tuberosity section were themain position enduring the vertical stress. The rear position of the base femur neck and the small tuberosity section were the main regions enduring the bending stress. Those main positions had strong cancellous bones. The intertrochanteric fracture fixation and artificial femoral stems were designed depending on this biomechanical basis.

CONCLUSIONAccording to our experiment result, doctors need to chose more effective fixations for upper femur fracture, and femoral stems for the patients. More information should be collected by further researches.

Adult ; Aged ; Biomechanical Phenomena ; Female ; Femur ; chemistry ; Humans ; Male ; Middle Aged ; Stress, Mechanical

Adult ; Blood Donors ; China ; epidemiology ; Female ; Genotype ; HIV Infections ; complications ; epidemiology ; virology ; Hepacivirus ; genetics ; Hepatitis C ; complications ; epidemiology ; virology ; Humans ; Male ; Middle Aged

OBJECTIVEAccording to the information obtained from the revision of total hip arthroplasty, the situations of the artificial femoral stem under physiological stress were analyzed preliminarily. In order to accumulate clinical experience, the discussions about how to enlongate the life of artifical joints were performed.

METHODSFifty-three patients required revision operations were selected, including 28 males and 25 females,with an average age of 74.66 years old (61 to 84 years old). The average life of artificial joints was 18.24 years (3 to 27 years). The initial weightbearing was started 11 days (5 to 16 days) after the first operation. The main reasons for the revision were the spontaneous loosening and trauma. Based on imaging and surgical findings, as well as the histological pathology, the situations of the stems in human bodies were determined.

RESULTSFemoral prosthesis would sink under physiological stress. The design of femoral stems, motion of patients', and bone growth determined the secondary stability. Straight stems were helpful for physiological subsidence of prosthesis, achieving the stability with close bone-implant contact by bone growth,which allowed the patient to do early landing exercise. The collared prosthesis and prosthesis combined with internal fixation limited the subsidence of femoral stems. Their stability depends on the time of initial placement and the bone growth for supporting. Delaying the inital weightbearing was suggested for patients with these protheses.

CONCLUSIONAccording to the actual situation of the patients, the appropriate chosen of femoral stems and time to perform the weightbearing can extend the life of the femoral prosthesis.

Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Hip ; adverse effects ; methods ; Female ; Hip Prosthesis ; Humans ; Male ; Middle Aged ; Prosthesis Design

OBJECTIVETo detect the expression of B7-H1 gene in bone marrow mononuclear cells (BMMNCs) from leukemia patients and explore its clinical implications.

METHODSThe B7-H1 mRNA expression levels of BMMNCs from 74 newly diagnosed leukemia patients and 10 normal volunteers were detected by real-time quantitative PCR. At the same time, BMMNCs from 12 patients in complete remission (CR) after chemotherapy and 5 in relapse were followed up. The correlation between the clinical features of 74 de novo leukemia patients and the expression level of B7-H1 gene was analyzed.

RESULTSThe mRNA expression level of B7-H1 gene in BMMNCs from de novo leukemia patients (RQ = 0.125) was lower than that from normal control (RQ=1). When patients achieved CR the gene expression level (RQ = 69.07) was significantly higher than that before CR (P = 0.001). After relapsed, its level (RQ=4) was still higher than that before CR (P > 0.05). No clinical parameters such as gender, age, peripheral white blood count, blast cells ratio in BM, CD34 positive cells were significantly correlated with the expression level of B7-H1 except the response to therapy. The initial expression level of B7-H1 gene in non CR patients after therapy was significantly higher than that in CR patients (RQ = 26. 91, P = 0.005).

CONCLUSIONThe mRNA expression level of B7-H1 gene in newly diagnosed leukemia patients is lower than that in normal controls, and is higher in CR patients than in newly diagnosed patients. There is a correlation between the gene expression level and responsiveness to therapy.

Adult ; Antigens, CD ; metabolism ; B7-H1 Antigen ; Female ; Humans ; Leukemia ; drug therapy ; genetics ; metabolism ; Male ; Middle Aged ; RNA, Messenger ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction

Adult ; Blood Coagulation ; Emergency Treatment ; Female ; Humans ; Intraoperative Period ; Liver Transplantation ; Male ; Middle Aged

OBJECTIVETo investigate the biological characteristics of dermal fibroblasts of the diabetic rats with deep partial thickness scald, and to explore its relationship with delayed wound healing due to diabetes.

METHODSSprague-Dawley rats weighing 250 g were randomly divided into control (NM, n=40) and STZ-induced diabetic (DM, n=50) groups, and then deep partial thickness scald involving 10% TBSA were reproduced in the two groups. Skin samples were harvested from the wounds on 0, 3, 7, 14 and 21 post scald day (PSD) for the determination of certain histological characteristics.

RESULTSThe thickness of dermis layer in DM group before injury was obviously thinner than that in NM group (P < 0.01). There was an infiltration of a large amount of chronic inflammatory cells and increased content of cutaneous glucose in the dermal tissue in DM group (2.77 mg/g) compared with 0.85 mg/g in NM group, (P < 0.01). An accumulation of advanced glycation end products (AGEs) was found in the dermal tissue in DM group. After the scalding, the percentage of fibroblasts in S phase and hydroxyproline synthesis in DM group was evidently lower than those in NM group. But the apoptosis rate of fibroblasts was much higher in DM group than that in NM group (P < 0.05 or 0.01).

CONCLUSIONIt is found that the high contents of glucose and AGEs in diabetic skin exert untoward effects on biological characteristics of dermal fibroblast, probably constituting one of the underlying mechanisms of delay wound healing of scald in diabetic rats.

Animals ; Burns ; metabolism ; pathology ; Diabetes Mellitus, Experimental ; Fibroblasts ; cytology ; Glycation End Products, Advanced ; metabolism ; Male ; Rats ; Rats, Sprague-Dawley ; Skin ; metabolism ; pathology ; Wound Healing

Adaptor Proteins, Signal Transducing ; genetics ; B-Cell CLL-Lymphoma 10 Protein ; Chromosomes, Human, Pair 11 ; genetics ; Chromosomes, Human, Pair 18 ; genetics ; Gene Rearrangement, B-Lymphocyte ; Humans ; In Situ Hybridization, Fluorescence ; methods ; Lymphoma, B-Cell, Marginal Zone ; genetics ; Paraffin Embedding ; Translocation, Genetic