Aim To observe the effect of the polymerization of HSF1 on the febrile response in fever rabbits,and further to investigate HSF1 action in thermoregulation and the possible central mechanism.Methods 70 rabbits were divided randomly into 4 groups:the control group(N),the quercetin group(Q),the LPS-feverish group(L),the quercetin+LPS-feverish group(Q+L).Changes in body temperature were continually observed;the expression of HSF1 and HSP70 in hypothalamus was detected by Western blot;the content of AVP in hypothalamus and VSA was measured by radioimmunoassay.Results ① The sequence of the maximum change of temperature(△Tmax)from low to high:group Q

PurposeTo explore the multislice CT (MSCT) and clinical manifestations of diaphragmatic hiatus hernia with hernial sac effusion, in order to improve its diagnostic rate.Materials and MethodsMSCT data were retrospectively analyzed for morphologies and clinical manifestations in 32 patients with diaphragmatic hiatus hernia and hernial sac effusion.Results32 patients included 21 males and 11 females (χ2=0.64,P>0.05). 25 patients were older than 60 years and 7 cases younger than 60 years (χ2=13.58,P<0.01). There were 27 cases with non-viscera hiatus hernia including 23 cases of combined fat-water hernia and 4 cases of simple effusion. 5 cases were of viscera type hiatus hernia (χ2=5.47,P<0.05). 28 cases showed ascites including 23 cases with non-viscera hiatus hernia and 1 case with viscera type hiatus hernia (χ2=9.56,P<0.01). The axial images from different levels of non-viscera hiatus hernia with liquid hernial sac demonstrated quasi-circular, meniscus, ringlike and teardrop shapes.Viscera type hiatus hernia and liquid hernial sac were found to be irregular shape . All patient sufferered from dysphagia, chest distress and epigastric discomfort.ConclusionThe increased pressure gradient between thorax and abdomen driving ascites into supradiaphragmatic hernial sac and clamping by hiatus may be the main mechanism. Quasi-circular, meniscus, ringlike andteardrop were the characteristic signs of diaphragmatic hiatus hernia with hernial sac effusion.

Objective:To explore the application value of MRI texture analysis in combination with imaging features to predict the WHO/International Society of Urological Pathology (ISUP) nuclear grading in pre-operative patients with clear cell renal carcinoma (ccRCC).Methods:MRI images of 78 patients diagnosed as ccRCC by surgical pathology from July 2016 to July 2020 in First Affiliated Hospital of Fujian Medical University were retrospectively analyzed. According to the WHO/ISUP grading system, the patients were divided into low grade group (49 cases, grade Ⅰ in 2 cases and grade Ⅱ in 47 cases) and high grade group (29 cases, grade Ⅲ in 25 cases and grade Ⅳ in 4 cases), and then were assigned to training set ( n= 63) and validation set ( n=15) in a ratio of 7∶3 using random indicator method. MRI radiological features were evaluated and MRI imaging texture features were extracted. The largest-diameter slice of lesion on cross-sectional images was selected and ROIs were drawn on T 2WI and corticomedullary phase (CMP) images, respectively. Quantitative texture analysis software MaZda was used to extract texture features, including gray-scale histogram, co-occurrence matrix, run-length matrix, gradient, autoregressive model and wavelet transform. The extracted texture features were preliminarily selected by the combination of Fisher, probability of classification errorand average correlation coefficient, and interaction information, and then the reduced texture parameters or imaging features were tested by the independent sample t test, Mann-Whitney U test or χ 2 test. Parameters with statistically significant differences were used to construct a multi-factors binary logistic regression model and the ROC curve was used to analyze its effectiveness in predicting high grade ccRCC. Results:In training set, there were significant differences intumor length, shape and margin, enhancement degree of CMP, vein thrombosis and 47 texture features between the low and high grade ccRCC groups. In the training set, 7 multi-factors binary logistic regression model were constructed, including radiological features model (M1), T 2WI texture features model (M2), CMP image texture features model (M3) and combination radiological features of T 2WI texture features model (M4), combination radiological features of CMP images texture features model (M5), combination T 2WI texture features of CMP images texture features model (M6) and combination of all features model (M7). The area under ROC curve of M7 in predicting nuclear grading of ccRCC was the largest, which were 0.901 (95% CI 0.828-0.974) and 0.820 (95% CI 0.564-0.974) in the training set and validation set, respectively. Conclusion:MRI texture analysis combined with imaging features is hopeful to be an effective preoperative noninvasive method in predicting WHO/ISUP grading of ccRCC.

Objective To explore the effect of transcatheter arterial chemoembolization ( TACE ) on the apoptosis proteins fas,bax,and bcl-xl in hepatocellular carcinoma ( HCC ) . Methods Sixty-three cases with HCC proved by histopathologically were studied, which included 42 cases treated with surgical resection alone,and 21 cases underwent TACE . The expressions of fas,bax,bcl-2 and bcl-xl were detected with immunohistochemical SP method .Results The positive rate of fas was 47.62% ( 10/21 ) in HCCs treated with TACE,and 21.43%(9/42) in those treated with surgical resection alone, there was significantly difference between the two groups(?0.05). Conclusion TACE can increase the expression of fas and decrease the expression of bcl-xl, it can increase the rate of apoptosis of HCC, make HCC lesion contract. The effect of TACE to bax need more research.

ObjectiveTo study the effect of sub-chronic exposure to deltamethrin(DM) on neural behavior and expression of NMDA receptor in hippocampus of mice.Methods 60 Female SPF Kunming mice were divided into 4 groups and given DM 60 days by gavage.Hot-plate,rotarod,grip strength,hing limb landing foot splay were used to examine the sensory and motor change of mice.Autonomic activity test was used for detecting the functional status of the central nervous system in mice.Passive avoidance test for detection of the behavior changes of learning and memory,and RQ-PCR was employed to measure the expression of NMDA receptor in hippocampus of mice.ResultsThe behavior of sensory and motor of mice sub-chronic exposure to deltamethrin did not have changes significantly(P ＞ 0.05 ).In the test of autonomic activity test,the average of autonomic activity times were (93 ± 18) times,(107 ± 13) times,(105 ±22) times.Compared with the control group,the average of autonomic activity times in middle-and high-dose groups were increased significantly (P ＜ 0.05 ).The latent periods in poisoning groups were (175.4 ±38.4) s,(146.4 ±51.2)s,(132.3 ±45.0) s,and the error times were (0.7 ±0.3)times,( 1.4 ± 0.5 ) times,( 1.8 ± 0.9) times.Compared with the control group,latent periods of high-dose group were decreased and the error times of middle-and high-dose groups were increased significantly (P ＜ 0.05 ).Compared with the control group,the relative expression levels of NR1 and NR2A mRNA in hippocampus of middle and high-dose groups were increased significantly (P＜ 0.05 ),and the relative expression level of NR2B mRNA in highdose group was decreased significantly(P ＜ 0.05).ConclusionSub-chronic exposure to DM could increase the excitability of mice,damage the function of learning and memory,and influence the expression of NMDA receptor in hippocampus of mice.

Objective To study the effect of feto-matemal microchimerism in the treatment of activated human leukocyte antigen (HLA) haploidentical mobilized peripheral blood cells against solid tumors. Methods Genomic DNA samples of 25 pairs of HLA haploidentical donors and recipients were extracted. The donor-derived HLA-DRB loci were detected with nested PCR-sequence specific primer(SSP) typing. The mixed lymphocyte proliferation action between the patients and respective donors, the engraftment of donor's cells and the serum levels of Th1/Th2 type of cytokines were measured with MTT,FISH and EIJSA method respectively. The survival time of patients with or without feto-matemal microchimerism were compared as well. Results Using nested PCR-SSP typing, the positive rates of feto-maternal microchimerism in the 25 pairs of HLA haploidentical donors and recipients were 40% in the maternal/children pairs and 0 in the paternal/children pairs. The chimerism positive patients showed less proliferation activity when cocultured with respective donors as compared with unrelated ones (P=0.03).Only one chimerism positive patient experienced the engraft of donor's cell 3 months after treatment as the donor derived XX chromosome was identified with FISH. When the data of chimerism positive patients were deleted, the serum levels of IFNγ 1 month after treatment dropped dramatically from 171.4 (26. 3～258.4) ng/L to 29. 4(1.2～39.9)ng/L. The survival time in chimerism positive patients of the maternal/children pairs was significantly longer than that in chimerism negative patients, which was (31.2±4. 3) months and (11.1±3.3) months, respectively (P=0.036). Conclusion Feto-maternal microchimerism might induce anergy in the HLA haploidentical donors, favor the engraftment of donor's progenitors and maintenance of positive microenvironment and prolong the survival time.

Objective To explore the clinical application and safety of treatment of percutaneous radioactive 125I seed implantation treatment in lung metastases under CT guidance.Methods Twenty-seven lung metastatic malignancy cases (67 nodules) were studied.Eighteen cases (46 nodules) were hepatic cancer,4 cases (9 nodules) were prostate cancer,and 5 cases (12 nodules) were breast carcinoma.Diameters of lung nodules ranged from 0.5 cm to 4.0 cm with an average diameter of 2.1 cm.125I seeds were embedded under CT guidance,using 2 to 33 particles/nodule with an activity of 18.5 to 29.6 MBq/grain for each particle.Tumor matched peripheral dose was 90-120 Gy.Postoperative validation and quality evaluation followed.Results Four months later,24 nodules showed CR,30 showed PR,5 showed NC and 8 showed PD.The total effective rate was 80.6％ (54/67).In the course of treatment,11 patients had pneumothorax,3 had heavy lung compression and 4 had hemoptysis.All conditions were improved by pleural puncture or under close follow-up observation.Conclusion 125I seed implantation is an effective and safe technique in treatment of metastatic lung tumors under CT guidance.

OBJECTIVE To strictly manage the whole process for cleaning the laminar air flow(LAF) operating center to achieve the modernized hospital environment′s standard requests.METHODS Right before the use of the LAF operating center,scientific management was conducted strictly according the regulations and standards issued by state Ministry of Health.RESULTS Fulfilling the standards of the process for cleaning operating center was all for the goal of improving the efficiency of management.CONCLUSIONS A management is made efficient from checking all the things before use,monitoring them,and training people so that they can efficiently carry out their tasks.The purpose of the scientific management is to reach the expected quality.

Objective:To study effects of neuroligin (NLG) on the proliferation and apoptosis in human neuroblastoma SH-SY5Y cells.Methods:The SH-SY5Y cells were cultured in vitro for 24 hours,and then transfected with NLG siRNA at dose of 50,100,200 μmol/L,respectively.MTT procedure was used to detect the cell proliferation,and expression levels of apoptosis gene including Bax or Bcl-2 and Bcl-xl were measured by RT-PCR.Results:Compared to control groups proliferation of SH-SY5Y cells were distinctly inhibited after NLG siRNA transfection accompany with a dose-dependent,which was caused by activation of apoptosis.Conclusions:NLG protect neuron by inhibiting apoptosis.

Objective:To investigate the curative effect and safety of Stoppa approach combined with iliac fossa approach in the treatment of the patients with coxafossa anterior column or coxafossa dual column bone fracture, and to provide a scientific evidence for its application in the treatment of the patients with coxafossa anterior column or coxafossa dual column bone fracture.Methods:Sixty-three patients with coxafossa anterior column or coxafossa dual column bone fracture were selected;among them 32 cases were treated with stoppa approach combined iliac fossa approach(Stoppa group),and 31 patients were treated with ilioinguinal approach(control group).The intraoperative blood loss volume,the operaton time,the reset quality of fracture and hip joint function after operation of the patients in two groups were evaluated.Results:The intraoperative blood loss volume of the patients in Stoppa group was lower than that in control group, and the difference was statistically significant (P<0.05).The operation time of the patients in Stoppa group was shorter than that in control group, and the difference was statistically significant (P<0.05).The reset quality of fracture of the patients in stoppa group was higher than that in control group, and the difference was statistically significant (P<0.05).The hip joint function of the patients in Stoppa group was higher than that in control group, and the difference was statistically significant (P<0.05).Conclusion:Stoppa approach combined with iliac fossa approach is an effective method in the treatment of the patients with coxafossa anterior column or coxafossa dual column bone fracture with sufficient exposure and tiny tissue damage.Stoppa approach combined with iliac fossa approach in the treatment of the patients with coxafossa anterior column or coxafossa dual column bone fracture has the advantages of shorter operative time,less blood loss, higher rate of anatomic reduction,and good joint function.