OBJECTIVE: To analyze and discuss four methods of calculating likelihood ratio of DNA mixture. METHODS: In the case with CNAS-T0757 proficiency testing in 2013, the likelihood ratios were calculated and compared among four methods, including unrestricted combinatorial method, Clayton's method, p2 principle method, and recommendations from ISFG. RESULTS: The likelihood ratios were maximum by Clayton's method and recommendations from ISFO, followed by result of the unrestricted combinational method. The minimum likelihood ratio was obtained by p2 principle. CONCLUSION The unrestricted combinational method could give fUrthest consideration to both information preservation and appraiser protection.
DNA/genetics* ; DNA Fingerprinting ; Humans ; Likelihood Functions

Animals ; Lung ; immunology ; pathology ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; metabolism ; physiopathology ; Spleen ; immunology ; pathology ; fas Receptor ; analysis

ObjectiveTo retrospectively analyze clinical data of patients who has left-side valvular disease combined with severe tricuspid regurgitation and evaluate the effect of our modified tricuspid annuloplasty with enforcement of artificial felt strip.Methods76 patients who had left-side valvular disease combined with severe tricuspid regurgitation received operations between Jan.2008 and Jun.2010.The average age of the patients was 53.5 years old (32 male and 44 female).Besides the severe tricuspid regurgitation, other combined cardiac impairments included mitral valvar disease (52 cases), aortic valvar disease(5 cases), double valvar disease(19 cases) and left atrial thrombosis(22 cases).6 patients had grade II cardiac function according to the NYHA criteria, while 47 and 23 were in grade III and IV, respectively.Other signs included cyanosis(5cases), jaundice(11 cases), neck vein engorgement(48 cases) , ascites(22 cases), hepatomegaly(41 cases) and pitting edema in the lower limbs(68 cases).The concomitant operative procedures included mitral valve replacement in 52 patients,aortic valve replacement in 5 patients, double valve replacement in 19 patients, removal of left atrial thrombus in 22 patients,left atrium folding in 21 patients and left atrium appendage suture in 68 patients.Left-sided valve disease were corrected first,TAP was performed on the beating heart after the heart had been defibrillated.The anteroseptal commissure was plicated first.A double-armed 3-0 pledgeted suture was taken through the base of the septal leaflet, 5-6 mm from the commissure, extending along the annulus, and out from the point in the anterior annulus 10-12 mm from the anteroseptal commissure.Both ends of the suture was tied until the two Teflon pledgets approximated each other near the commissure.Then a semicircular De Vega type of plicating with a 3-0 prolene was taken, starting just from the anterior annulus near the anteroposterior commissure, and extending clockwise to a point just cephalad to the posteroseptal commissure.The suture was tied with positioning a 27-29 mm valve siser across the tricuspid valve.At last, a 3-5 mm width felt strip was prepared and was sutured to the plicated posterior annulus region with interrupted mattress sutures of 2 to 3 2-0 prolene.A favorable result was considered when TR was not marked by saline injection.Echocardiography was routinely examined one week postoperatively and patients were followed up 6 month after discharge.ResultsThere is no death in all patients.The CVP diminished significantly from 16mmHg preoperatively to 8mmHg postoperatively (P = 0.0021).The systomic pulmonary pressure diminished from 59 mmHg preoperatively to 41 mmHg postoperatively (P = 0.038).Echo one week postoperative showed no tricuspid regurgitation in 56 patients and mild in 18 patients, while 2 had moderate tricuspid regurgitation.The diameter of right atrium diminished significantly postoperatively, too.The ejection fraction was improved even though there was not significant difference as compared with preoperative data.The cardiac function of all patients improved and the signs of right heart failure were alleviated or disappeared.Follow up 1 to 36 months showed no change of the regurgitation except for one become moderate from mild when discharged.No hepatic congestion or edema was observed in all patients.ConclusionThese new modifications make the technique more selective in the remodeling of the tricuspid annulus.It could achieve better coaptation of the anterior leaflet with the others, successful annular reduction, better maintenance of the contractile property of the tricuspid ring, better distribution of pursing force in the more dilated region.It could prevent the tear of the endocardium in the posteroseptal region in the long period of time postoperatively.

Objective To analyze the reliability of the Boston bowel preparation scale (BBPS) for the assessment of bowel preparation quality. Methods Demonstration video of Boston bowel preparation scale provided by Boston Medical Center were viewed by 49 clinicians,who came from several hospitals in Guangdong province and participated in an education conference.Then 3 testing colonoscopy videos were scored with BBPS and inter-observer reliability was assessed. 13 participants repeated the above test 3 months later,and intra-observer reliability was assessed.Results The correlation coefficient of inter-observer for BBPS scores was 0.987 (95％ CI:0.949 - 1.000 ),and that of intra-observer was 0.713(95 ％ CI:0.452 -0.849).Conclusion BBPS is a reliable measure of bowel preparation,while the validity of BBPS deserves further analysis.

BACKGROUND:Animal experimental studies have confirmed that cell transplantation,neurotrophic factor infusion or transplantation as well as other methods can alter the local environment of injured spinal cord and promote its partial function recovery. OBJECTIVE:This study aimed to assess the clinical efficacy of olfactory ensheathing cell transplantation for the treatment of the sequel of myelitis,and to explore whether it would promote the recovery of the spinal cord function. DESIGN:A non-randomized self-control study. SETTING:Ward of Second Department of Surgery of Taian Disabled Soldiers Hospital of Shandong Province. PARTICIPANTS:Thirty-two patients with obsolete myelitis,who come from all over China and suffered from disease for 0.5 to 7 years,admitted to our hospital between June 2004 and July 2007 were recruited in this study.The involved patients,including 21 males and 11 females,were aged 5-48 years.Their neurological functions were not obviously improved after various conventional treatments and limb function exercise.Meanwhile,various sensorimotors and autonomic nerve functional impairments were left.Among the patients,18 suffered from acute viral myelitis,8 from acute purulent myelitis and 6 from tuberculous myelitis.After onset,they were all given large doses of radiosonde, dexamethasone,anti-inflammatory and immunomodulatory drugs and various neurotrophic drugs.Twenty-six patients presented complete injury and six patients incomplete injury.Informed consent of treatment was obtained from each patient.The therapeutic protocol was approved by the Ethics Committee of the hospital.Embryonic olfactory bulbs were harvested from aborted embryo,which was donated voluntarily by the patients or their relatives. METHODS:Cells were isolated from embryonic olfactory bulbs,cultured and purified for 7 to 14 days,and finally they were digested into single-cell suspension.Under the surgical miscroscope,the cells were transplanted onto the regions which were above or below the spinal cord injury site.Two weeks to 2 months postoperatively,neurological function of spinal cord was assessed by using the American Spinal Injury Association(ASIA)Scoring Standard formulated in 2000,and was compared to pre-operation function. MAIN OUTCOME MEASURES:①Sensory function change.②Motor function change. RESULTS:Half a year to 2 years after olfactory ensheathing cell transplantation,the sensory and motor functions of 32 patients were all obviously improved(motor function:55.72?10.50 vs.51.53?13.41;light touch:69.53?11.68 vs. 63.06?15.98;pain sense:69.50?12.20 vs.64.03?15.0,all P

A rapid LAMP detection method with primers designed on genus-specific region identified in the gyrA gene was established in this assay. All four Campylobacter jejuni from different sources were detected positive and fourteen non Campylobacter bacteria were negative, which shows excellent specificity of the primers. Compared with plate count and PCR method, the LAMP method and the PCR method had equal sensitivity, which were three orders of magnitude higher than plate count. In this assay, we also found out that the treatment of DNase could reduce the dead bacteria DNA effectively. The LAMP detection on chicken indicated relatively good result on detection of Campylobacter jejuni combining with treatment of DNase.

Objective To observe the effect of low intensity pulsed ultrasound (LIPUS) on chondrocytes co-cultured with infrapatellar fat pads.Methods Twenty-four infrapatellar fat pads and cartilages from female knee trauma patients aged between 25 and 35 were cut and stained using hematoxylin-eosin staining.Chondrocytes were isolated from part of the integrated surface of the cartilages to be cultured in vitro.They were then randomly divided into a normal chondrocyte group (the control group),a normal chondrocyte+FCM (fat conditioned medium) group (the model group),a normal chondrocyte+ FCM + LIP US group (the treatment group),and a normal chondrocyte+ FCM + LIPUS + GRGDSP (an integrin inhibitor) group (the inhibited group).The treatment group and inhibited group received LIPUS at 40 mW/cm2 for 20 min once a day,while the other groups received sham LIPUS treatment.Five days later,the cells were collected and western blotting was used to examine the expression of type Ⅱ collagen (COL2),aggrecan (Acan),matrixmetalloproteinase (MMP)-13,integrin β1,phosphorylation-focal adhesion kinase (p-FAK) and phosphorylation p38 (p-p38).Results Western blotting showed that compared with the control group,the expression of COL2 and Acan was significantly lower in the model group,but that of MMP-13,integrin β1,p-FAK and p-p38 was significantly higher.As compared with the model group,the expression of COL2,Acan,integrin β1 and p-FAK was significantly higher,and that of MMP-13 and p-p38 was significantly lower in the treatment group.The expression of COL2,Acan,MMP-13,integrin β1,p-FAK and p-p38 showed no significant difference between the inhibited and model groups,but that of COL2,Acan,MMP-13,integrin β1,p-FAK and p-p38 was significantly different between the control and treatment groups.Conclusions LIPUS provides a protective effect on chondrocytes through inhibiting the expression of MMP-13 induced by adipokines and the degradation of COL2 and Acan through activating the integrin-FAK-p38 MAPK pathway.

Dietary restriction (DR) can delay senescence,prolong lifespan of mammals and improve their learning-memory activity.The purpose of the study was to explore the effects of DR on hypolipidemic action and liver function of mice with hyperlipidemia.To investigate these effects,hyperlipidemia mouse models were established with high-fat diet (HFD) (34％ of energy),then randomly divided into HFD group,DR30％ group and DR50％ group.Mice in DR30％ and DR50％ group were respectively supplied with HFD as much as about 70％ and 50％ of the consumption of HFD in the mice of HFD group.Rats in control group were fed routinely.After DR for 5 weeks,the average body weight,liver weight,liver index,serum lipids and glucose levels in both DR groups decreased significantly as compared with the HFD group (P＜0.05 or P＜0.01),so did alanine aminotransferase (ALT),aspartate aminotransferase (AST),lactate dehydrogenase (LDH) levels and the ratio of LDL-C/HDL-C in the DR50％ group (P＜0.05 or P＜0.01).Histopathology examination of liver tissues further proved ameliorative effect of DR on liver function.Western blotting showed that DR significantly increased the expression of silent mating type information regulation 2 homolog 1 (SIRT1) in liver and adipose,while notably decreased the expression of peroxisome proliferators-activated receptors-gamma (PPARγ) in adipose (P＜0.05 or P＜0.01).The increase of SIRT1 and decrease of PPARγ may be a mechanism by which DR reduces blood lipids and ameliorates liver function.

Objective:To investigate the expression and prognostic significance of CD19 in patients with Acute myelogenous leukemia with AML1-ETO positive. Methods: Clinical data of 66 patients AML with AML1-ETO positive who were newly diagnosed from Jan 2010 to Dec 2015 were collected. To retrospectively analyze the relationship between clinical characteristics and expression of CD19,so dose the prognosis. Results:The positive rate of CD19 expressing in AML with AML1-ETO positive was 50. 0%. There were no statistically significant differences in terms of age,gender,hemoglobin,platelet,percentage of bone marrow blasts,accompanied with chromosome ,gene mutations between patients with and without CD19 expression(P>0. 05). The white blood cell count(WBC) of the CD19 negative group was higher than CD19 positive group,while showed significant difference(P=0. 027). Although the relapse-free survival (RFS) of patients with CD19 expression was higher than those without,no significant difference was calculated (P=0. 105). Patients with CD19 expression had superior overall survival ( OS ) compared to those without CD19 expression ( P = 0. 030 ) . Multivariable analysis for OS identified CD19 positivity as an independent predictor associated with better prognosis. Conclusion: The expression of CD19 in AML with AML1-ETO positive may be an indicator associated with better prognosis.

Objective To summarize the preliminary experience and early -stage follow -up results of simple transesophageal echocardiography(TEE)to guide right jugular internal vein for closure of atrial septal defect (ASD), and to investigate its feasibility.Methods A total of 24 ASD patients(12 male,12 female)treated by transcatheter ASD closure under solely guidance of TEE were summarized in Children Heart Center,People′s Hospital of Zhengzhou University from February 2015 to February 2016.Mean age,body weight and average diameter of the 24 cases of ASD were 5 -18 (12.4 ±5.6)years old,16 -60 (34.1 ±9.6)kg,5 -20 (11.0 ±2.5)mm,respectively.All patients were treated by right jugular internal vein transcatheter closure under solely guidance of TEE.The efficiency of imme-diate post -operation under TEE was estimated,and follow -ups were done at 24 hours,1 month,3,6 and 12 months after the procedures by transthoracic echocardiography,X -ray examination and electrocardiogram.Results A total of 23 patients were treated successfully under solely guidance of TEE.The diameter of devices was (14.5 ±3.6)mm.The procedural time was(20.5 ±7.2)min.One patient who had 2 ASD was treated by traditional thoracic surgery,because the small ASD had 5 mm residual shunt after the procedures.There were 3 cases with trivial residual shunt after the pro-cedures immediately.All patients could move at once after operation.The average follow -up time was(5.6 ±1.2) months.No patients suffered from residual shunt,occluder malposition,peripheral vascular injury,pericardial effusion or cardiac perforation during the follow -up.Conclusions For some selected patients,simple TEE guiding right jugular in-ternal vein for closure of ASD is applicable.The method not only prevents injury from radiation,but also shortens the in -bed time and avoid the lower limbs braking,with good early -stage follow -up results are desirable.