In this study, the effect of benzo[α]pyrene (BaP) on chaperone-mediated autophagy (CMA) in a simulated hypoxia environment was observed and the relationship to heat shock protein 90 (HSP90) was clarified. With HSP90 inhibitor geldanamycin (GA) and HSP90α silenced, the mRNA and protein expression of hypoxia-inducible factor-1α (HIF-1α), HSP90, heat shock cognate protein 70 (HSC70), and lysosomal associated protein 2A (LAMP-2A) of A549 cells on hypoxic environment by BaP were tested. Alkaline comet experiment, immunofluorescence γ-H2AX focus experiment, quantitative real-time PCR (qPCR), and Western blot analyses were used to clarify the relationship between the DNA damage of different concentrations of BaP in A549 cells and the mRNA and protein expression of CMA-related factors. The results show that hypoxia can promote the expression of mRNA and protein of CMA-related factors in A549 cells. This study found that BaP has an inhibitory effect on CMA under the hypoxic environment. The inhibition or silencing of HSP90 will enhance the inhibitory effect of BaP on CMA. In a normoxic environment, BaP causes DNA damage and promotes CMA.

ObjectiveTo investigate the effects of fosfomycin tromethamine (FT) on the expressions of tumor necrosis factor-α (TNF-α), interleukin-8 (IL-8), and interleukin-6 (IL-6) in the prostate tissue of the rats with chronic bacterial prostatitis (CBP).

METHODSWe randomly divided 70 male SD rats into 7 groups of equal number: blank control, CBP model control, positive control, 14 d low-dose FT, 7 d low-dose FT, 14 d high-dose FT, and 7 d high-dose FT. The CBP model rats in the latter five groups were treated intragastrically with levofloxacin at 100 mg/kg/d for 30 days and FT at 200 mg/kg/d for 14 and 7 days and at 300 mg/kg/d for 14 and 7 days, respectively. Then we collected the prostate tissue from the animals for determination of the levels of TNF-α, IL-8 and IL-6 by ELISA.

RESULTSCompared with the blank controls, the CBP model rats showed significantly increased levels of TNF-α (［19.83 ± 6.1］ vs ［32.93 ± 6.21］ ng/g prot, P <0.01), IL-8 (［8.26 ± 0.52］ vs ［16.2 ± 2.84］ ng/g prot, P <0.01) and IL-6 (［1.55 ± 0.11］ vs ［2.51 ± 1.06］ ng/g prot, P <0.05) in the prostate tissue. In comparison with the CBP model controls, the levels of TNF-α and IL-8 were remarkably decreased in the groups of positive control (［20.54 ± 5.78］ ng/g prot, P <0.01; ［12.43 ± 4.02］ ng/g prot, P <0.05), 14 d low-dose FT (［21.95 ± 6.48］ ng/g prot, P <0.01; ［11.11 ± 2.86］ ng/g prot, P <0.01), 7 d low-dose FT (［23.8 ± 6.93］ ng/g prot, P <0.05; ［12.43 ± 4.02］ ng/g prot, P <0.05), 14 d high-dose FT (［19.97 ± 2.58］ ng/g prot, P <0.01; ［8.83 ± 1.32］ ng/g prot, P <0.01), and 7 d high-dose FT (［21.97 ± 3.38］ ng/g prot, P <0.01; ［12.68±1.97］ ng/g prot, P <0.05). No statistically significant differences were observed between the positive control and FT groups in the contents of TNF-α, IL-8 or IL-6 (P >0.05). The expression of IL-6 was markedly reduced in the 14 d high-dose FT group as compared with the model controls (［1.76 ± 0.46］ vs ［2.51 ± 1.06］ ng/g prot, P<0.05) but exhibited no significant difference between the CBP model control and the other groups (P >0.05).

CONCLUSIONSFosfomycin tromethamine inhibits the expressions of TNF-α, IL-8 and IL-6 in the prostate tissue, suppresses its inflammatory reaction, promotes the repair of damaged prostatic structure, and thus contributes to the treatment of chronic bacterial prostatitis in rats.

Animals ; Anti-Bacterial Agents ; pharmacology ; Bacterial Infections ; drug therapy ; microbiology ; Fosfomycin ; pharmacology ; Interleukin-6 ; metabolism ; Interleukin-8 ; metabolism ; Levofloxacin ; pharmacology ; Male ; Prostate ; drug effects ; metabolism ; Prostatitis ; drug therapy ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Tumor Necrosis Factor-alpha ; metabolism

With the development of polymeric materials and nanotechnology, the potential application of nanoscaled drug delivery system (NDDS) is gradually manifested in the field of pharmaceutics. Especially, NDDS has the obvious advantages in the delivery of gene or drug. Comparing to the delivery system of single-drug, co-delivery system of gene and drug can significantly improve the therapeutic effects by enhancing transfection efficiency of gene and reversing multidrug resistance, etc. The co-delivery systems of gene and drug, which had the triggered release characteristics in the inner and outer of tumor, could be constructed by introducing the environment-responsive (pH-responsive, redox-responsive and light-responsive, etc) groups into the co-delivery system. The antitumor activity was further improved. In the present paper, the environment- responsive delivery systems in the application of co-delivery gene and drug in recent years were reviewed, and their remarkable properties in the antitumor activity were analyzed and summarized.

Objective To systematically review the clinical efficacy of sling exercise therapy(SET)on patients with chronic non-specif-ic low back pain (CNLBP). Methods Randomized controlled trials (RCT) about SET for CNLBP were electronically searched in CNKI, VIP,Wanfang Data,PubMed,Web of Science,The Cochrane Library and Embase from June,2007 to June,2017.After literatures screening, data extraction,quality evaluation and risk assessment,the results of meta-analysis were conducted by RevMan 5.3 software.Results Final-ly, 15 RCTs involving 789 patients were included. SET was better in improving Visual Analogue Scale (VAS) score (MD=-1.15, 95% CI[-1.41,-0.90],Z=8.82,P<0.00001)and Oswestry Low Back Pain Disability Index(ODI)score(MD=-1.29,95%CI[-1.80,-0.78],Z=4.94, P<0.00001) than physical therapy, and was better than other exercise therapies in improving the VAS score (MD=-0.94, 95% CI[-1.52,-0.37],Z=3.21,P=0.001)and ODI score(MD=-5.96,95%CI[-9.41,-2.51],Z=3.38,P=0.0007).However,no significant dif-ference was found in improving the NPRS score between SET and other exercise therapies(MD=0.35,95%CI[-0.23,0.93],Z=1.19,P=0.23),nor in improving VAS score between SET and traditional Chinese medical therapies(MD=-5.29,95%CI[-20.27,9.70],Z=0.69,P=0.49).Conclusion SET may play a role in relieving pain and functional limitations in patients with CNLBP.Due to the limited quantity and quality of the included studies,larger scale and high quality RCTs are needed to verify the aforementioned conclusion.

Objective To investigate the relationship of plasma concentration of NT-proBNP,copeptin and glasgow coma scale(GCS)scores,hematoma volumes in patients with acute cerebral hemorrhage.Methods 109 patients with acute cerebral hem-orrhage(the cerebral hemorrhage group)and 32 healthy individuals (the control group)admitted in our hospital from December 2011 to June 2013 were selected and detected for plasma NT-proBNP and copeptin.The levels of NT-proBNP,copeptin,glasgow co-ma scale(GCS)scores and hematoma volumes were compared between the two groups.Results The levels of plasma NT-proBNP and copeptin in the cerebral hemorrhage group were significantly higher than that in control group(P <0.05).The levels of plasma NT-proBNP and copeptin were significantly increased with the severity and the hematoma volume of the acute cerebral hemorrhage. The levels of NT-proBNP and copeptin are positively correlated with hematoma volumes(r=0.63,r=0.58,P <0.01)and negative-ly correlated with Glasgow Coma Scale(GCS)scores(r=-0.52,r=-0.46,P <0.01).Conclusion The levels of NT-proBNP and copeptin are positively correlated with hematoma volumes and negatively correlated with glasgow coma scale(GCS)scores.They are important clinical parameters to reflect the severity and hematoma volumes of the acute cerebral hemorrhage.

Objective To investigate that the relationship of serum concentration of copeptin ,procalcitonin(PCT )and early diagnosis ,prognosis in patients with cerebral hemorrhage‐associated pulmonary infection .Methods One hundred and twenty pa‐tients with acute cerebral hemorrhage ,acute cerebral hemorrhage‐associated pulmonary infection and 60 healthy individuals (the control group) admitted in our hospital from January 2012 to December 2013 were selected and detected for serum copeptin and procalcitonin .The differences of serum copeptin ,procalcitonin levels were compared in controls ,in patients with cerebral hemor‐rhage and cerebral hemorrhage‐associated pulmonary infection and their correlation was analyzed .Results The levels of serum copeptin in the cerebral hemorrhage‐associated pulmonary infection were significantly higher than that in control group and the cer‐ebral hemorrhage (P<0 .05) .The levels of serum procalcitonin in control group and the cerebral hemorrhage were significantly lower than that in the cerebral hemorrhage‐associated pulmonary infection ,the levels of serum C‐reactive protein ,copeptin ,procalci‐tonin and the APACHEⅡ scores of the patients with survival group were significantly lower than those with non‐survival group (P<0 .05) .Conclusion The levels of serum copeptin and procalcitonin are correlated intimately with cerebral hemorrhage‐associat‐ed pulmonary infection .They are important clinical parameters to reflect the early diagnosis and prognosis of cerebral hemorrhage‐associated pulmonary infection .

Objective To investigate the clinical characteristics of the wounded in Wenchuan earthquake transported to our hospital and summarize therapeutic experiences. Methods Clinical data of 92 patients resulted from Wenchuan earthquake admitted into our hospital were reviewed and analyzed in aspects of general data,injury severity,therapeutic methods and clinical results. Results All pa-tients were free from infection,reamputation and fracture-related complication. Conclusion After the arrival of large number of the wounded in the station hospitals.efficient organization of station hospitals,comprehensive evaluation of the patients'condition,effective detailed therapeutic plans and careful man-agement of the medical complications can attain sound results.

OBJECTIVETo determine whether an adenoviral construct containing bone morphogenetic protein-4 (BMP-4) gene can be used for lumbar spinal fusion.

METHODSTwelve New Zealand white rabbits were randomly divided into two groups, 8 in the experimental group and 4 in the control group. Recombinant, replication-defective type 5 adenovirus with the cytomegalovirus (CMV) promoter and BMP-4 gene (Ad-BMP-4) was used. Another adenovirus constructed with the CMV promoter and beta-galactosidase gene (Ad-beta-gal) was used as control. Using collagen sponge as a carrier, Ad-BMP-4 (2.9 multiply 10(8) pfu/ml ) was directly implanted on the surface of L(5)-L(6) lamina in the experimental group, while Ad-beta-gal was implanted simultaneously in the control group. X-ray was obtained at 3, 6, and 12 weeks postoperatively to observe new bone formation. When new bone formation was identified, CT scans and three-dimensional reconstruction were obtained. After that, the animals were killed and underwent histological inspection.

RESULTSIn 12 weeks after operation, new bone formation and fusion were observed on CT scans in the experimental group, without the evidence of ectopic calcification in the canal. Negative results were found in the control group. Histological analysis demonstrated endochondral bone formation at the operative site and fusion at early stage was testified.

CONCLUSIONSIn vivo gene therapy using Ad-BMP-4 for lumbar posterolateral spinal fusion is practicable and effective.

Adenoviridae ; genetics ; Animals ; Bone Morphogenetic Protein 4 ; Bone Morphogenetic Proteins ; therapeutic use ; Genetic Therapy ; methods ; Humans ; Lumbar Vertebrae ; surgery ; Rabbits ; Spinal Fusion

With the development of clinical education,Urology Department in Xiangya Hospital has identified teaching object and scheme,and improved the condition and modality of teaching and the level and development of clinical teaching.