Objective:To detect genomic aberrations and investigate the expression and clinical significance of TBX2,CHK2, and p53 in malignant peripheral nerve sheath tumor (MPNST) tissues. Methods:We collected 63 cases of MPNST tissue samples, which were re-moved by resection and were confirmed by pathology, from January 1991 to December 2011 in Department of Bone and Sofer Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital. Twelve fresh tumor samples with qualified DNA quality were selected from the above 63 cases of tissue samples. Genome abnormalities of 12 MPNST tissues were detected by next-generation sequencing. The protein expression levels of TBX2, CHK2, and p53 in 63 MPNST tissue samples were assessed by immunohistochemistry staining. Results:One case of TBX2 gene mutation was observed out of the 12 MPNST tissue samples. In 63 MPNST tissue samples, the protein expression rates of TBX2, CHK2, and p53 were 60.3%(38/63), 47.6%(30/63), and 30.2%(19/63), respectively. TBX2 expression was sig-nificantly correlated with AJCC (American Joint Committee on Cancer, AJCC) stage, recurrence, and metastasis (P<0.05). TBX2 expres-sion was directly correlated with that of CHK2 (r=0.254, P=0.045), and CHK2 expression was directly correlated with that of p53 (r=0.343, P=0.006). In terms of the disease-free survival and overall survival time, patients with high expression levels of TBX2, CHK2, and p53 had significantly worse prognosis than patients with low expression levels of TBX2, CHK2, and p53(all P<0.05). TBX2, CHK2, and p53 were independent prognostic factors of MPNST. Conclusion:TBX2 and its associated proteins may play important roles in MPNST development and progression. Detecting TBX2 expression may provide the theoretical basis for estimating the prognosis of patients with MPNST.

BACKGROUND:A large number of studies have confirmed that tissue-engineered stem cel therapy is feasible to repair peripheral nerve injury, but the repair mechanism is unclear.
OBJECTIVE:To observe the differentiation and homing of bone marrow mesechnymal stem cel s under local nerve microenvironment by exploring the migration and effect of bone marrow mesenchymal stem cel s in the repair of damaged nerve.
METHODS:Male SD rats, aged 8 weeks, were selected to establish segmental nerve injury models by freezing the sciatic nerve. Thirty-six model rats were randomized into three groups (n=12):frozen nerve injury group, cel injection into the nerve group, cel injection around the nerve group. Before modeling and at 4, 8, 12 weeks after cel implantation, the sciatic nerve function index was measured. Electrophysiological test, contractility recovery rate, wet weight recovery rate of the triceps surae were detected and Masson staining was performed;toluidine blue staining of the distal nerve injury and immunofluorescence staining of the damaged nerve were performed.
RESULTS AND CONCLUSION:At 4, 8, 12 weeks after cel implantation, the sciatic nerve function index was ranked as fol ows:frozen nerve injury group

Objective To investigate the relationship between pure -tone audiometry (PTA ) ,speech dis‐crimination abilities in quiet or in noise and the international outcome inventory for hearing aids (IOI-HA) in pres‐bycusis patients .Methods Twenty presbycusis subjects were tested in this study .Pure-tone audiometry (PTA) and speech discrimination threshold were obtained before being fitted with hearing aids .They weared hearig aids more than six months ,and pure-tone audiometry ,speech discrimination scores in quite(the level = 65 dB SPL) and in noise(signal to noise ratio = 10 dB) were carried out in sound field .A stepwise forward multiple-regression analysis was performed to investigate the impact of PTA and speech discrimination scores to IOI-HA .Results The PTAs before or after hearing aid fittings showed a negative association with IOI-HA ,while speech discrimination scores in quiet or in noise before or after hearing aid fittings showed a positive association with IOI-HA .Speech discrimination threshold in noise was identified as a single predictor of IOI-HA(P<0 .001) .Conclusion The relation between speech discrimination scores in noise and IOI-HA suggests that a poor score might limit the hearing aids outcome .The speech discrimination scores in noise help the clinicians predict the outcomes of hearing aid in real‐ities .

Objective:Prostate cancer frequently metastasizes to the spine. In this study, we investigate the prognostic factors as-sociated with survival in patients with prostate cancer accompanied by spinal metastases at their preliminary diagnosis. Methods:Clin-ical data of 49 patients who were diagnosed with spinal metastasis from prostate cancer between January 2005 and December 2010 were analyzed. Variables including alkaline phosphatase (ALP), previous skeletal-related event, Gleason score, prostate-specific anti-gen (PSA) nadir, and time to castration resistance were obtained. Moreover, the relationship between these variables and overall sur-vival (OS) was analyzed. Survival analysis was performed by using Kaplan-Meier curves. Furthermore, the differences among the OS rates were assessed by using the log rank test. The variables were statistically significant in the univariate analysis (P<0.05) and were included in the multivariate model. Results:The average follow-up time was 64.1 months among the 49 patients. By the end of the follow-up, 41 of these patients were dead;the mean survival was 27 months. The 1-, 3-, and 5-year survival rate was 81.6%, 40.8%, and 20.4%, respectively. Univariate analysis identified that 6 variables were statistically significant prognostic factors of OS:with or without chemotherapy, ALP, previous skeletal-related event, Gleason score, PSA nadir, and time to castration resistance. The multivari-ate analysis showed that the time to castration resistance of ≥19 months and the addition of chemotherapy after disease progression are independent prognostic factors for a high OS. Conclusion:With or without chemotherapy and the time to castration resistance are the independent prognostic factors associated with survival in patients with prostate cancer accompanied by spinal metastases at first diagnosis.

Objective To evaluate the speech recognition ability in noise enviroment in older adults with age-related hearing loss and to discuss the influences of age ,hearing loss and cognitive function on the ability of speech recognition in noise enviroment .Methods A total of 90 older adults aged over 60 years at the hearing clinic of Xinhua hospital were divided into three groups according to the age ,which were 60~69 y group (88 ears) ,70~79 y group (64 ears) ,> 79 y group (28 ears) .All the participants completed pure tone audiometry ,the Mandarin hearing in noise test (MHINT) and the mini-mental state examination (MMSE) .The pure tone average hearing threshold (PTA) ,signal-to -noise ratio (SNR) of MHINT and MMSE scores were obtained .We used the statis_tical software SPSS 17 .0 to analyze the correlations among age ,PTA ,adaptive SNR and MMSE scores .ResuIts ①PTA and SNR increased with the age .The difference of PTA and SNR for different age groups was statistically sig_nificant (P<0 .01) .②The difference SNR among different PTA groups were significant (P<0 .01) ,and when the influence of MMSE scores was controlled the difference was still significant .There was a significant linear correlation between PTA and SNR (r=0 .326 ,P<0 .01) .MMSE scores decreased with the increasing of PTA ,and there was also a linear correlation between PTA and MMSE scores (-0 .187 ,P<0 .05) .③Adaptive SNR and MMSE scores were correlated (r= -0 .201 ,P<0 .01) ,but there was no significant linear relationship .Besides ,SNR of the cog_nitive function impairment group (<27 points) was significantly greater than that of the normal cognitive function group (27~30 points) (P<0 .01) .However ,among the three PTA groups ,the differences were not statistically significant .ConcIusion The hearing in noise test reflects the ability of speech recognition in noise enviroment in ol_der adults ,and can be used to assess the hearing functions in elder .Speech recognition in noise ,peripheral hearing loss and cognitive functions are relevant .Cognitive functions have an influence on the evaluation of the hearing func_tion for older adults .

Objective To investigate the reliability and practicality of Chinese version the hearing handicap in-ventory for the elderly -screening version(HHIE -S) scale for elderly hearing screening in China .Methods We compared the HHIE -S scores with results of pure -tone audiometry test .A total of 840 Chinese individuals older than 60 years filled in the scale all by themselves first ,then refilled it according to explanations of each question translated by researchers .All participants finished pure -tone audiometry test with frequencies of 0 .25 ,0 .5 ,1 .0 , 2 .0 ,and 4 .0 kHz .Sensitivity ,specificity ,positive predictive value (PPV ) ,false-negative rate and false -positive rate were compared with HHIE -S cut -off points of >8 or >10 and pure-tone averages (PTAs) greater than 25 ,40 and 60 dB HL .Analysis the area under the curve (AUC) values of receiver operating characteristic (ROC) curves for each three PTA levels .Results Cronbach's α of the scale was 0 .85 .HHIE -S scale pre -explanatory score was 7 .6 ± 10 .6 ,and post-explanatory score was 10 .8 ± 16 .7(P<0 .01) .HHIE -S> 8 points higher than H HIE-S> 10 points in the sensitivity ,positive predictive value increase ,specificity ,false-positive rate ,false negative rate decreased ,paired samples t - test sensitivity and false -negative rate (P< 0 .05) .After the guide meanwhile HHIE-S cut-off points of > 8 when grouping with PTA> 25 dB HL ,PTA> 40 dB HL and PTA>60 dB HL ,conducted ROC curve analysis ,the AUC value was 0 .70 ± 0 .03 ,0 .84 ± 0 .01 and 0 .88 ± 0 .02 .Conclusion The score of HHIE-S scale>8 points can be used when PTA> 40 dB HL as goal for hearing loss of old people , it can be more accurate after explanations ,so HHIE-S scale can be used as a preliminary hearing screening method for Chinese elderly people .

Objective: To investigate the clinical effect of free medical sural artery perforator myocutaneous flap for repairingof the woundwith osteomyelitis. Methods: 17 patients suffered from the wound with osteomyelitis were treated in the Ningbo First People′s Hospital, There were 11 males and 6 females with an mean age of 53.2 years (range, 21-76 years). The sizes of the defect ranged 5 cm×4 cm to 13 cm×6 cm. All patients underwent debridement and used antibiotic-loaded bonecement to cover the wound. Meanwhile, patients were treated with sensitive antibiotics, operation and free medical sural artery perforator myocutaneous flap were used to treat the wound. Preoperative use ultrasound and CT angiography to positioning perforator, The flap area ranged from 6 cm×4 cm to 13 cm×7 cm and the donor sites were closed directly. The author provided the patients with the treatment of anti-inflammatory, anti-spasmodic and anti-coagulantin the postoperative. Used infrared thermograms to assess the flap blood supply. Results: One flap skin margin was non union due to poor blood supply.All of the other 16 flaps success survived and the donor sites were closed directly. Postoperative follow-up period was 4 to 23 months and the flaps had satisfied texture and appearance.All the donor sites had a good healing with no pain and complications, also the osteomyelitis was controlled. Conclusions The free medical sural artery perforator myocutaneous flap is reliable for reconstruction of the wound with osteomyelitis.

OBJECTIVETo investigate the predictive value of procalcitonin(PCT) in postoperative intra-abdominal infections (IAI) after definitive operation of intestinal fistulae(IF).

METHODSWith the exclusion of emergence operation, preoperative clinical infection, preoperative renal or hepatic dysfunction, and age less than 18 years, a total of 356 consecutive patients who underwent elective digestive tract reconstruction of intestinal fistulae from February 2012 to December 2015 at Intestinal Fistula Center of Jinling Hospital were prospectively enrolled in the study. All the patients were divided into IAI group (26 cases, 21 of anastomosis leakage and 5 of peritoneal abscess) and non-IAI group (330 cases) based on the existence of postoperative IAI. The non-IAI group was then divided into two subgroups of other infection (93 cases) and non-infection(237 cases) according to the presence of other infections. Plasma PCT level, serum CRP concentration and WBC count were assessed preoperatively and on postoperative days (PODs) 1, 3, 5, 7 by immunofluorescence, turbidimetry and automatic blood analyzer, respectively. The predictive value of each marker for IAI was calculated by receiver operating characteristic (ROC) curve.

RESULTSThere was no significant difference in general clinical data between IAI and non-IAI group (all P>0.05). The proportions of multi-IF (53.8%, 14/26) and colectomy (61.5%, 16/26) in IAI group were higher than those of non-IAI group [20.0% (66/330), χ=15.847, P=0.000 and 31.2%(103/330), χ=9.961, P=0.002]. Differences of preoperative PCT, CRP and WBC levels among IAI, other infection and non-infection groups were not significant. These three markers all increased obviously and immediately after surgery. PCT and WBC values reached the peak point on POD 1, whereas CRP on POD 3. In IAI group, mean PCT values were (5.4±4.2) μg/L, (2.9±1.9) μg/L and (1.6±1.8) μg/L on POD 1, POD 3 and POD 5, respectively, which were higher than those of other infection group [(4.2±8.7) μg/L, (1.9±3.8) μg/L and (0.6±0.8) μg/L] and non-infection group [(2.7±5.8) μg/L, (1.1±1.7) μg/L and (0.5±0.7) μg/L, all P<0.05]. Mean CRP values in IAI group were 99.4 mg/L and 183.9 mg/L respectively on POD 1 and POD 3,and mean WBC values of IAI group on POD 1, POD 3 and POD 5 were 16.0×10/L, 10.8×10/L and 8.7×10/L, respectively, which were all significantly higher than those in the other 2 groups (all P<0.05). No significant differences were obtained between other infection group and non-infection group in all these three markers (all P>0.05). ROC curve demonstrated that PCT had the biggest area under the curve (AUC) of 0.86 and 0.84 on POD 3 and POD 5, with the cut-off value of 0.98 μg/L and 0.83 μg/L, 92.0% sensitivity and 74.0% specificity, 91.0% sensitivity and 73.0% specificity, respectively. The highest AUC was 0.72 on POD 3 for CRP and 0.71 on POD 3 for WBC, with 80.0% sensitivity and 54.0% specificity, 56.0% sensitivity and 73.0% specificity, respectively.

CONCLUSIONThe value of procalcitonin above 0.98 μg/L on POD 3 and 0.83 μg/L on POD 5 can predict the occurrence of IAI after definitive operations of intestinal fistulae.

Abdominal Abscess ; etiology ; Anastomotic Leak ; etiology ; Area Under Curve ; Biomarkers ; blood ; Calcitonin ; blood ; Colectomy ; adverse effects ; statistics & numerical data ; Elective Surgical Procedures ; adverse effects ; statistics & numerical data ; Female ; Humans ; Intestinal Fistula ; complications ; surgery ; Intraabdominal Infections ; etiology ; Male ; Postoperative Complications ; epidemiology ; Predictive Value of Tests ; ROC Curve ; Retrospective Studies ; Sensitivity and Specificity

Objective To investigate the predictive value of non-thyroidal illness syndrome (NTIS) before definitive operation on postoperative surgical site infection (SSI) in patients with enterocutaneous fistula (ECF).Methods The retrospective case-control study was conducted.The clinical data of 264 ECF patients (181 with euthyroidism and 83 with NTIS) who underwent definitive operation in the Nanjing General Hospital of Nanjing Military Command between April 2014 and November 2016 were collected.After definitive operation,86 with SSI and 178 without SSI were respectively allocated into the SSI group and non-SSI group.Observation indicators:(1) risk factor analysis of postoperative SSI;(2) effect of preoperative NTIS on postoperative SSI;(3) predictive power of serum free triiodothyronine 3 (FT3) level on postoperative SSI.Measurement data with normal distribution were represented as x-± s and was analyzed using the t test.Count data were described as absolute number or percentage,and were analyzed using the chi-square test.The comparison of ordinal data was done by the nonparamentric test.The multivariate analysis was done using the logistic regression model.The receiver operating characteristic (ROC) curve was drawn,and area under the curve (AUC) was calculated for analyzing predictive power of serum FT3 level on postoperative SSI.Results (1) Risk factor analysis of postoperative SSI:cases with volume of preoperative intestinal fluid loss through fistula stoma ＜ 200 mL/24 hours,from 200 to 500 mL/24 hours and ＞ 500 mL/24 hours,preoperative hemoglobin (Hb) level,cases with surgical site located in stomach and duodenum,small intestine,ileocolon and colorectum,cases with open surgery and laparoscopic surgery were respectively 65,15,6,(119±36)g/L,5,50,31,36,58,28 in the SSI group and 135,27,16,(125±39)g/L,11,91,53,71,127,51 in the non-SSI group,with no statistically significant difference between groups (x2 =0.471,t =1.202,x2 =0.332,0.422,P＞0.05).Cases with preoperative single.and multiple fistula stoma,serum albumin (Alb) level,cases with preoperative NTIS,volume of intraoperative blood loss ＜ 300 mL and ≥ 300 mL,operation duration ＜ 3 hours and ≥ 3 hours were respectively 57,29,(35±.8)g/L,36,67,19,53,33 in the SSI group and 146,32,(37±9)g/L,47,161,17,140,38 in the non-SSI group,with statistically significant differences between groups (x2 =8.089,t =2.422,x2 =6.426,7.746,8.547,P＜0.05).Results of multivariate analysis showed that preoperative multiple intestinal fistula and NTIS were independent factors affecting occurrence of postoperative SSI in ECF patients (odds ratio =1.873,2.464,95％ confidence interval:1.052-2.671,1.120-4.392).(2) Effect of preoperative NTIS on postoperative SSI:incidence of preoperative multiple intestinal fistula,proportion of cases with preoperative enteral nutrition time ＞3 months,incidence of postoperative SSI,postoperative superficial and deep incision infection rates and organ/space infection rate were respectively 31.3％ (26/83),72.3％ (60/83),43.4％ (36/83),9.6％ (8/83),21.7％(18/83),7.2％ (6/83) in patients with NTIS and 19.3％(35/181),57.5％(104/181),27.6％(50/181),11.6％(21/181),3.9％(7/181),8.8％ (16/181) in patients with euthyroidism,with statistically significant differences in incidence of multiple intestinal fistula,proportion of cases with preoperative enteral nutrition time ＞ 3 months,incidence of postoperative SSI,superficial and deep incision infection rates (x2 =4.603,5.319,6.426,4.256,4.377,P＜0.05),and no statistically significant difference in organ/space infection rate (x2=0.193,P＞0.05).(3) Predictive power of serum FT3 level on postoperative SSI:the ROC curve showed that optimal cut-off point of serum FT3 predicting postoperative SSI was 3.5 pmol/L,AUC,sensibility and specificity were respectively 0.75,72.6％ and 68.7％.Conclusion The presence of NTIS is associated with occurrence of postoperative SSI in patients with ECF before definitive operation,and optimal cut-off point of serum FT3 predicting postoperative SSI is 3.5 pmol/L.

Objective To explore the predictive value of prognostic nutritional index (PNI) in surgical site infections (SSIs) for intestinal fistula patients undergoing bowel resections.Methods Clinical data of 290 gastrointestinal fistula patients who underwent intestinal resections between 2012 and 2015 were retrospectively reviewed.Univariate and multivariate analyses were conducted to identify risk factors for SSIs,and receiver operating characteristic (ROC) curve was used to quantify the effectiveness of PNI.Results SSIs were diagnosed in 99 (34.1％) patients.ROC curve analysis defined a PNI cut-off level of 45 corresponding to postoperative SSIs (area under the curve =0.72,76％ sensitivity,55％ specificity).Furthermore,a multivariate analysis indicated that the PNI ＜ 45 (OR:2.24,95％ CI:1.09-4.61,P =0.029) and preoperative leukocytosis (OR:3.70,95 ％ CI:1.02-13.42,P =0.046) were independently associated with postoperative SSIs.Conclusions Preoperative PNI is useful to predict SSIs in intestinal fistulae patients after enterectomies.