To study the immunopathological characteristics and differential diagnosis of hepatic angiomyolipoma(AML).Methods:Thirty-six surgically resected hepatic AML were investigated clinicopathologically and immunohistochemically with 10 antibodies.Results:Hepatic AML occurred in 21 females and 15 males,with the mean age of 41.6 years(26-60 years old).The patients with AML often had no special symptoms even had large space-occupying lesions in the liver.The diameter of AML was 2.5 cm to 14 cm(mean 6.8 cm).Histologically,AML was composed of varying heterogeneous mixture of 3 tissue components:blood vessels,smooth muscle and adipose cells.Extramedullary hemopoiesis sometimes existed.According to tissue components,AML was subcategorized into mixed type(19.4%,n=7),lipomatous type(11.1%,n=4),myomatous type(66.7%,n=24),and angiomatous type(2.8%,n=1).The epithelioid smooth muscle cells were sensitive to HMB-45(100%),SMA(100%),and CD117(66.7%) staining.Conclusion:Hepatic AML often contains smooth muscle elements,which have varied morphological features and should be carefully differentiated from hepatocellular carcinoma,mesenchymal hamartoma，and tumors with rich fat or blood vessels.Immunohistochemical staining with HMB-45 and SMA are the best available markers for the diagnosis of hepatic AML.

Gastric cancer is one of the common malignant tumors in digestive system. The incidence of gastric cancer in China is higher than that in developed countries. The prognosis of gastric cancer is closely related to the stage of cancer, and the prognosis of advanced gastric cancer is poor. Improving the detection rate of early gastric cancer is the key to improve the survival of patients with gastric cancer. Endoscopic technology developed rapidly in recent years,various forms of endoscopy have been applied in clinical practice,and the detection rate of early gastric cancer was increased. This article reviewed the advances in study on endoscopic diagnosis of early gastric cancer.

Objective To investigate the effect of bilateral sacrospinous ligament fixation by Pavlik harness method in the treatment of pelvic organ prolapse (POP). Methods Sixty patients with POP received operation were divided into bilateral sacrospinous ligament fixation by Pavlik harness method group (study group,30 cases),posterior intravaginal sling plasty group (P-IVS group, 15 cases) and sacrospinous ligament fixation group (SSLF group, 15 cases) by random digits table. The data of the three groups, such as operation time, bleeding during the operation, indwelling urinary catheter time, duration out of bed after operation, cure rate, recurrence rate and the quality of sexual life were observed. Results The operation time in study group [( 30.5 ± 5.3 ) min] was significantly shorter than that in SSLF group [(43.5 ± 10.6) min](P ＜ 0.05 ), and the duration out of bed in study group [( 1.5 ± 0.6) d] was earlier than that in SSLF group [(3.1 ±0.7) d] and P-IVS group [(3.3 ±0.8) d](P＜0.05). The POP-Q stage of all the patients being hospital was 0 or Ⅰ , approached the cure standard. Patients were followed up for 3-16 months after operation, the recurrence rate and the decrease of the quality of sexual life in study group [0,3.3%(1/30)]were lower than those in P-IVS group [20.0%(3/15),13.3%(2/15)] and SSLF group[6.7%(1/15),26.7%(4/15)] (P ＜ 0.05). Conclusion Bilateral sacrospinous ligament fixation by Pavlik harness method is a simple, firm operation, and the position of vagina does not axialitily change and suits the anatomy, so it is effective and worth spreading clinically to treat the POP.

Resveratrol(RES)is a kind of antitoxin material produced by plant angainst fungi,it has many biological activites, which can restrain a variety of microorganisms.RES was reviewed in this paper with a variety of inhibition microbial func-tions in recent years,and summarized the antibacterial mechanisms of interfering with cell wall protein synthesis,cell mem-brane damage and RsbA mediating antibacterial factor formation.

Objective To investigate the economic losses in kidney transplant patients with healthcare-associated lower respiratory tract infection(LRTI).Methods All transplant patients in a hospital from 2008 to 2012 were in-vestigated,patients with LRTI were in infection group(n=45),and patients without LRTI were in control group(n=266),hospitalization expenses and hospitalization days between two groups were compared.Results A total of 383 kidney transplant patients were included in the study,the incidence of LRTI was 11 .75% (n=45),median ex-pense of infection group and control group was ￥79 291 .82 and ￥72 185.14 respectively,the difference was not statistically significant (P >0.05).The largest increased expense in patients with LRTI was medicine (increased by￥5 429.82),medicine and examination expense in infection group were significantly higher than control group (￥39 123.17 vs ￥33 693.35;￥702.52 vs ￥593.73;P <0.05 ).The median hospitalization days in infection group and control group was 28.38 days and 21 .47 days respectively,there was significant difference between two groups(P <0.05 ).Conclusion Kidney transplant patients with LRTI suffer from a heavy financial burden,and their hospitalization days are prolonged,so measures should be taken to prevent the occurrence of LRTI and save limited medical resources.

Objective To investigate the direct economic loss caused by oral infection in patients with acute leuke-mia.Methods Acute leukemia patients with oral infection in a tertiary first-class hospital in Shandong Province be-tween January 2011 and December 2013 were investigated,the 1 :1 matched case-control method was used for com-paring hospitalization expense and length of hospital stay between oral infected (case group)and uninfected patients (control group ).Results A total of 994 patients with acute leukemia were monitored,277 had healthcare-associated infection,17 (5.56%)of whom were with oral infection.The median hospitalization expense of patients in case group and control group was￥37 327 and￥13 176 respectively,the total hospitalization expense of patients in case group was 2.83 times more than control group,difference was statistically significant (Z = -3.621 ,P <0.001).Each hospitalization expense of case group was higher than control group,especially expense for medicine, blood transfusion,laboratory examination,and therapy.The median length of hospital stay in case group and con-trol group were 17 days and 11 days respectively,rank sum test showed that difference in median length of hospital stay between two groups was statistically significant (Z =-3.627,P < 0.001 ).Conclusion Acute leukemia pa-tients with oral infection have increased hospitalization expense,prolonged length of hospital stay,and increased the financial burden.

Objective To investigate the effects of BKCa channel on electrophysiology excitatory regulation in MVN neuron following hypoxia and to reveal its molecular mechanism.Methods C57BL/6 mices were performed MVNs hypoxia mice model,and randomly allowed to normal oxgen group and hypoxia group.The hypoxia group, according to the application of NS1 6 1 9 ,was further divided into the no NS1 6 1 9 pretreatment group and NS1 6 1 9 pre-treatment group.Using the patch clamp experiment technology,we recorded the effects of the MVN abnormal neu-ronal firing and the change of the BKCa currents.Using immunohistochemical technique,the changes of BKCa in the hypoxic MVNs detected were.Results Acute hypoxia increased neuronal activities.NS1619 pretreatment de-creased hypoxia-induced firing rate,and increased and postponed the maximum increase by hypoxia(P<0.05),al-so alleviated 10-min-hypoxia-induced depolarization(P<0.05).Perfusion with hypoxic significantly reduced the BKCa positive neurons(P<0.05).Conclusion These findings suggest that acute hypoxia increases neuronal activi-ties.The decreased MVN BKCa channels contribute to hypoxia-induced abnormal neuronal activities.

Abstract BACKGROUND: Alveolar bone deficiency wil not meet aesthetic and functional requirements for dental implants. OBJECTIVE:To observe the repair effect of passage 3 autologous bone marrow mesenchymal stem cels (BMSCs) and platelet-rich fibrin (PRF) on alveolar bone defects in rabbits. METHODS:Twenty-seven New Zealand rabbits were randomly divided into BMSCs/PRF group, PRF group and model group (n=9 per group). The left mandible incisors were extracted in al the rabbits under general anesthesia. BMSCs/PRF group was immediately implanted BMSCs/PRF composite into the alveolar socket, PRF group only implanted PRF, and model group implanted nothing. RESULTS AND CONCLUSION: In the model group, the alveolar crest and alveolar mucosa become sunken notably and narrowed. In the BMSCs/PRF and PRF groups, the thickness of alveolar bone wal, alveolar bone width, alveolar bone height difference, and bone mineral density were al increased, especialy in the former group. In addition, the trabecular arrangement was better in the BMSCs/PRF groups than the model and PRF group. Our findings indicate that alveolar socket filing with composite of BMSCs and PRF can achieve preservation of alveolar bone width and height after tooth extraction in rabbits.

Objective To evaluate the biological effect of tumor necrosis factor-α(TNF-α) on the proliferation and multi-directional differentiation of stem cells from rat apical papilla(SCAP).Methods SCAP was extracted by combining enzyme digestion method with tissue block method.The cells were divided into control group(TNF-α 0 ng/mL) and experimental group(TNF-α 5,10,20,50 ng/mL).The ability of proliferation of SCAP was measured by MTT method.The ability of osteogenic/dentinogenic differentiation of SCAP was measured by alizarin red staining and quantitative real-time PCR.The ability of adipogenic of SCAP was measured by oil red O staining.The expression of vascular related genes of SCAP was measured by quantitative real-time PCR.Results SCAP was consistent with the characteristics of mesenchymal stem cells and possessed the ability of multi-directional differentiation.The MTT results showed that experimental group promoted the proliferation of SCAP in comparison with the control group.The difference was statistically significant(P<0.05),and 10 ng/mL was the optimum concentration.The results of alizarin red staining showed that with the increase of the concentration of TNF-α,the mineralized nodules in the experimental group gradually became smaller,and the number of the formation decreased gradually.The results of quantitative real-time PCR showed that the expression of OC,DMP-1 and DSPP in the experimental group was significantly lower than that of the control group at 3 and 7 days,in which the expression of OC was statistically significant different(P<0.05);at 14 days,the expression of OC,DMP-1 in the experimental group was significantly lower than that of the control group(P<0.05).The result of Oil red O staining showed that with the increase of the concentration of TNF-α,the lipid droplets formation in the experimental group gradually decreased.The result of quantitative real-time PCR showed that the expression of ANGPT1,VEGFA,PECAM-1 in the experimental group was significantly lower than that of the control group(P<0.05).Conclusion TNF-α might promote the proliferation and inhibit the multi-directional differentiation of SCAP.