Objective:The time-dependent changes of hypoxia-inducible factor-1? (HIF-1?) expression induced by CoCl_(2 ) treatment and the effects of genistein on the level of HIF-1? expression in human retinal pigment epithelium cells were studied. Methods:Using a confocal scanning laser microscope coupled to a computer, HIF-1? expression was determined. Results:CoCl_(2 ) treatment could significantly elevate the level of HIF-1? expression. At 0.5 hour after CoCl_(2 ) treatment, the highest level was observed. Genistein 50 ?mol/L, 100 ?mol/L, 200 ?mol/L could suppress HIF-1? expression in a concentration-dependent manner. Conclusions:These results suggested that genistein could inhibit HIF-1? expression induced by CoCl_(2).

Objective To study the effect of AG490 on the invasion and metastasis of gallbladder SGC -996 cells regulated by JAK/STAT3,and discuss the related mechanism.Methods Cell viability treated with different concentrations of AG490(50,100,200μmol/L)was detected by MTT method.The ability of invasion and metastasis of gallbladder cells was evaluated by Transwell membrane count.The SGC -996 cell apoptosis was detected by flow cytometry.The protein expression of JAK/STAT3 pathway was detected by Western blot.Results The viability inhi-bition rates of different concentrations of AG490 for SGC -996 cells were (17.49 ±3.41)%,(38.66 ±4.57)%, (79.15 ±6.29)% respectively,and with the increasing of concentration,cell viability decreased obviously.Compared with the control group[(1.39 ±0.21)%],the differences were statistically significant(t =8.162,14.111,21.401, all P <0.01 ).The transfer ability inhibition rate of different concentrations of AG490 for SGC -996 cell were (23.18 ±4.53)%,(51.75 ±6.46)%,(81.32 ±7.13)% respectively,and with the increasing of concentration of AG490,the inhibition rate of invasion and metastasis enhanced.Compared with the control group [(1.46 ± 0.42)%],the differences were statistically significant(t =8.269,13.455,19.366,all P <0.01).The apoptosis rate for SGC -996 cells of different concentrations of AG490 were (13.34 ±4.33)%,(28.16 ±6.23)%,(53.61 ± 8.74)% respectively,and cell apoptosis increased with the increasing of concentration.Compared with control group [(0.97 ±0.52)%],the differences were statistically significant(t =4.913,7.533,10.414,all P <0.01).Different concentrations of AG490 can reduce expression of ZFX,STAT3 and Smad1 protein of JAK/STAT3 pathway of SGC -996 cells,compared with the control group,the differences were statistically significant(tZFX =2.154,3.041,4.185, tSTAT3 =7.348,14.892,17.774 and tSmad1 =3.474,5.241,7.718,all P <0.05).Conclusion AG490 can inhibit the invasion and metastasis of gallbladder SGC -996 cells,and the effect depends on dosage.Its mechanism may be relat-ed to the reduction of cell apoptosis and the protein expression of JAK/STAT3 pathway.

OBJECTIVETo identify the predictors of the positive results of transrectal ultrasound (TRUS)-guided biopsy for prostate cancer.

METHODSWe performed univariate and multivariate logistic regression analyses on the relevant data on 385 male patients that underwent TRUS-guided biopsy for prostate cancer, including such potential predictors as age, body mass index (BMI), symptoms, results of digital rectal examination (DRE), tPSA, fPSA, free/total PSA ratio (f/tPSA), prostate volume (PV), and PSA density (PSAD) for identification of the risk factors related to the positive rate of biopsy. Then we constructed a scoring system as a tool for predicting prostate cancer in repeat biopsies and determined the sensitivity of the system by calculating the false positive rate using the receiver operating characteristic curve.

RESULTSAmong the 385 patients, 139 (36.1%) were diagnosed with prostate cancer. On multivariate analysis, age (P < 0.01), DRE (P < 0.01), tPSA (P < 0.01), fPSA (P < 0.01), f/tPSA (P < 0.01), PV (P < 0.01), and PSAD (P < 0.01) were all significant predictors of prostate cancer. Multivariate logistic regression analysis showed age, tPSA, f/tPSA, PV, and PSAD to be independent predictors, with ORs and 95% CIs of 1.07 (1.05-1.16), 1.05 (1.02-1.15), 0.97 (0.86-0.99), 0.98 (0.87-0.96), and 1.79 (1.48-2.06), respectively. Moreover, patients with the risk score of 3-5 had a significantly higher rate of prostate cancer than those with 0-2 (64% vs 11%, P < 0.001).

CONCLUSIONThe scoring system on the key predictors of prostate cancer can help urologists to identify the men in need of prostatic biopsy.

Aged ; Digital Rectal Examination ; Humans ; Image-Guided Biopsy ; methods ; Logistic Models ; Male ; Middle Aged ; Prostate ; pathology ; Prostate-Specific Antigen ; analysis ; Prostatic Neoplasms ; chemistry ; pathology ; ROC Curve ; Risk Factors ; Ultrasonography, Interventional ; methods

Objective To evaluate the clinical efficacy of tacrolimus and cyclophosphamide (CTX) on lupus nephritis.Methods The clinical trials on treatment of lupus nephritis with tacrolimus and CTX published before October 2012 were searched at Cochrane library,PubMed,OVID,Wanfang database,Chinese Journal full-text Database,Chongqing Weipu Database by using the methods of Cochrane systematic review.At the same time the information from related journals,professional data and network were hand-searched.The homogeneous evaluation was performed by Meta-analysis.Statistical analysis of clinical data was performed by using Stata11 software.Results A total of 4783 reports were found,while only 9 papers (8 randomized controlled trials and 1 cohort study) met the inclusion criteria.Tacrolimus group got better complete remission ratio (Z =4.05,P ＜ 0.01),similar partial remission ratio (Z =0.44,P =0.661),and better overall remission ratio (Z =4.29,P ＜ 0.01) as compared with CTX group.There were no significant differences between tacrolimus group and CTX group in the incidence of infection (Z=1.75,P=0.081),renal damage (Z=0.88,P=0.38) and abnormal glucose metabolism (Z =1.91,P =0.070).Side effects such as liver function impairment (Z =2.65,P＜0.01),gastrointestinal discomfort (Z=2.31,P＜0.05),menstrual disorders (Z=3.88,P＜0.01),bone marrow suppression (Z =3.29,P ＜ 0.01) in tacrolimus group were lower than those in CTX group.Conclusions Compared with CTX,tacrolimus has better complete remission ratio and overall remission ratio,with less side-effects in the treatment of lupus nephritis.However,large scale,multicenter,well-designed clinical trials should be adopted to further confirm the conclusions.

In this study we present our experiences with the reverse sural fasciocutaneous flap to reconstruct the distal lower limb soft tissue defects caused by traumatic injuries. These flap graftings were carried out from Oct. 2010 to Dec. 2012 in our department. The series consisted of 36 patients, including 21 men and 15 women with an average age of 46.2 years (14-83 years) and with a medium follow-up period of 18 months (12-24 months). Of all the cases of acute trauma, there were 10 cases of trauma of distal tibia, 9 cases of trauma of perimalleolus, and 17 cases of trauma of midfoot and forefoot. Related risk factors in the patients were diabetes (2 cases), advanced age (>65 years, 3 cases) and cigarette smoking (6 cases). The reverse flow sural island flap irrigation depended on lower perforators of the peroneal artery. The fasciocutaneous pedicle was 3-4 cm in width and the anatomical structures consisted of the superficial and deep fascia, the sural nerve, short saphenous vein, superficial sural artery together with an islet of subcutaneous cellular tissue and skin. The most proximal border of the flap was only 1.5 cm away from the popliteal skin crease and the pivot point was 5-7 cm above the tip of the lateral malleolus. All the flaps survived. No arterial crisis occurred in any case. The venous congestion occurred in 2 cases and got better after raising the limbs and bloodletting. Only in an old man, 1.5 cm necrosis of distal margin of his flap occurred and finally healed after continuous dressing change. One-stage skin grafting was performed, and all the donor sites were sutured and successfully healed. It was concluded that the reverse sural fasciocutaneous flap is safe and reliable to extend to the proximal third even near the popliteal skin crease. We also concluded this flap can be safely and efficiently used to treat patients with large and far soft-tissue defects from the distal leg to the forefoot with more versatility and it is easier to reach the recipient sites.

3 month),fluid sign was observed in 2(3 vertebrae,3/26,11.5%). Conclusion Fluid sign is characteristic in acute,subacute and early chronic trauma vertebral compression fracture for bone marrow edema,while it is rare in metastatic tumor vertebral compression fracture.It may paly a role in the differentiation of benign and malignant vertebral compression fracture.

Objective:To report the clinical, pathological, electrophysiological and genic characteristics of a patient with familial amyloidosis Finnish type.Methods:The clinical characteristic of a 60-year-old female who admitted to Beijing Tiantan Hospital, Capital Medical University in June 2020 was analyzed. Meanwhile, the patient underwent electrophysiological examination, biopsy of labial gland, rectum and skin and gene sequencing analysis.Results:The patient presented left facial paralysis at the age of 50, right facial paralysis and thickening of lips at the age of 55, dysarthria and dysphagia at the age of 56. Physical examination of the patient showed signs of cranial nerves involvement and skin thinning and smoothness. Slit lamp showed corneal lattice dystrophy. Electrophysiological findings of the patient suggested bilateral carpal tunnel syndrome. Latencies were prolonged in bilateral visual evoked potential P100. The deep sensory conduction pathways in bilateral C 7 to biparietal and T 12 to biparietal cortex were abnormal. Pathology of the three biopsies of the patient showed the presence of amyloid deposition in the basement membrane around the glands. The heterozygous mutation of c.654 G>T in exon 4 of gelsolin (GSN) gene in the patient resulted in Asp187 Tyr mutation (p.D187Y). Conclusions:The patient with familial amyloidosis Finnish type was characterized by slowly progressive multiple group cranial neuropathy accompanied by corneal lattice dystrophy and skin changes. Optic nerve and spinal cord posterior funiculus sensory conduction pathway and D187Y mutation of GSN gene were involved.

Objective To establish a reproducible mouse model of hepatic veno-occlusive disease (HVOD) after allogeneic bone marrow transplantation (aallo-ABMT) and explore its pathogenesis.Methods Balb/c mice were randomly divided into three groups:(1) normal saline (NS) control group; (2) total body irradiation (TBI) group; (3) allogeneic bone marrow transplantation (allo-BMT) group.Liver weight,total bilirubin (TBil),tumor necrosis factor α (TNF-a),interleukin 6 (IL-6) and monocyte chemotactic protein 1 (MCP-1) were detected on the day 0,5,10,15 and 20 after transplantation.Hepatic vein and sinusoid congestion,infiltration of inflanmatory cells,and damage to hepatic cells and vascular endothelial cells were observed under the light microscopy after HE staining.Fibrosis of hepatic sinusoids and venule was observed under the light microscopy after Masson staining.Results Liver weight and TBil levels were elevated at 5th day and reached the peak at 15th day after all-ABMT.The changes of hepatic congestion and edema were obviously observed and there was infiltration of inflammatory cells at 5th and 10th day after alloABMT.At 15th and 20th day,hepatic congestion,edema and necrosis were reduced and liver damage was mainly presented with liver fibrosis and inflammatory infiltration.All mice died within 10 days after TBI,and hepatic congestion and edema were aggravated.As compared with NS control group,TNF-α,IL-6 and MCP-1 concentrations were significantly increased after all-ABMT.Conclusion A reproducible mouse model of hepatic veno-occlusive disease after all-ABMT was successfully established,and the pathogenesis was closely related to endothelial damage caused by total body irradiation,inflammatory cell infiltration and increased concentrations of cytokines.

OBJECTIVEThis study compared the roughness of porcelain polished or glazed surfaces and the adhesion of oral streptococcus mutans to them in vitro.

METHODS30 porcelain samples were made. Porcelain samples in group A were polished with diamond paste. Porcelain samples were glazed in group B and were polished with Al2O3 (240#) bur in group C. Their roughness values were measured by profilometer. Standardized cell suspensions were incubated with test samples for one hour at 37 degrees C, then retained cells were counted by image analysis (percentage area of a microscopic field covered by cells).

RESULTSRoughness values of group A, B, C were respectively (0.1987 +/- 0.057) microm, (0.1990 +/- 0.091) microm, (0.4260 +/- 0.174) microm. There was no significantly difference between group A and group B. The roughness samples in group C were significantly rougher than that in the other groups. The amount of retained cells in group A, group B, group C was respectively (15.92 +/- 4.37)%, (16.39 +/- 6.31)% and (41.48 +/- 12.1)%. There was no significant difference between the cell adhesion on porcelain surface glazed and polished, but more bacteria adhered on the porcelain surface in group C.

CONCLUSIONSPorcelain surface polished treatment was clinically acceptable compared with its glazed. They all exhibited the least amount of bacteria adhesion. The more porcelain surface was rough, the more bacteria adhered on it.

Bacterial Adhesion ; Dental Polishing ; Dental Porcelain ; Humans ; Streptococcus mutans ; physiology ; Tooth ; microbiology

Objective To investigate the effect of mesenchymal stem cells (MSC) on the activity of nuclear factor (NF)-?B in rats with myocardial infarction.Methods MSC were isolated from SD rats (120—150 g in weight).SD rats (180—200 g in weight) were subjected to MI by left coronary artery occlusion,and were allo- cated into three groups randomly:1)sham group (without ligation of the artery,n=8);2)injection of PBS solu- tion (n=8);3)injection of MSC (n=8).MSC or PBS solution was injected into myocardium from epicardium instantly after MI models were established.Four weeks after transplantation,cardiac function was evaluated u- sing physiological recorder.Western blot were performed to investigate the nuclear factor-? activity.The ex- pressions of tumor necrosis factor (TNF)-? and interleukin (IL)-6 were evaluated by RT-PCR and Western blot. Results 1)Mortality was 20%(2/10) in sham group,33.3%(4/12) in PBS group and 20%(2/10) in MSC group with no statistic differences between them(P=0.646).2) Hemodynamic measurements showed that MSC trans- plantation caused significant improvement in cardiac function,comparing with MI+PBS group.3) MSC inhibi- ted the activities of NF-?B in myocardium and down-regulated the expression of TNF-? and IL-6 in mRNA and protein level.Conclusion Transplantation of MSC improved cardiac function in MI rats,which may partly at- tribute to their immuno-inflammatory regulation mechanism.