Objective:The purpose of this study was to observe Huwang Mingmu San’s(HWMMS)effect on the experimental vitreous hemorrhage.Methods:We divided 48 rabbits randomly into the A group as the normal control group,the B group as the modal group,the C group as the traditional chinese medicine group(HWMMS)and the D group as the western medicine group(entodan).Six rabbits of the four groups were killed randomly in the 8th week and their vitreous send to TNF-?,IL-6 examination at the same time.We study the activity level of MDA,SOD,NA-K-ATP enzyme on retinal.Results: It was suggested that the TNF-?’s content in HWMMS group had significantly increased than that in the normal group and the model group but no difference was found between the HWMMS group and the entodan group.Meanwhile the results showed that the HWMMS group’s content of IL-6 and MDA was lower and SOD activity,NA-K-ATP enzyme content was higher than those in the model group and the entodan group.Conclusion:We concluded that the HEMMS had a remarkable therapeutic effect on retinal damage and in promoting absorption vitreous hemorrhage.

Objective To explore the effects and the underlying mechanisms of inhibiting three kinds of DNA methyltransferases(DNMT1,DNMT3a and DNMT3b) on the re-expression of cancer/testis antigen(CTA) in hepatic cells.Methods Transient transfection of HepG2 cells with siRNA was targeted against DNMT1,DNMT3a and DNMT3b(DNMT1+3a+3b),DNMT1 and DNMT3a(DNMT1+3a),DNMT1 and DNMT3b(DNMT1+3b),DNMT3a and DNMT3b(DNMT3a+3b),respectively.The other batch of cells was treated with 5'-aza-deoxycytidine(5-aza-dC) as positive control.Real-time PCR and Western blotting were used to detect the expressions of DNMTs and CTAsm,and the promoter methylation of partial CTA genes was detected with methylation specific PCR(MSP).Results Expressions of DNMT1,DNMT3a and DNMT3b declined significantly after siRNA interference in HepG2 cells.Two CTAs,CT10 and SSX1,re-expressed in the cells transfected by DNMT1+3a and DNMT1+3b.MAGE1 and MAGE3 were equally expressed in all cells despite been transfected or not.Demethylation occurred in the promoter region of CT10,while the promoter region of MAGE1 was in a state of unmethylation.Conclusions In HepG2 cells,CTA promoter can be demethylated via interference of DNMTs,which may lead to the re-expression of CTA that was originally unexpressed due to methylation.

Objective: To study the expression of the proliferating c el l nuclear antigen (PCNA) and cell nuclear area in the different layers of oral d ysplasia epithelium. Methods: S-P immunohistochemical method an d morphometric technique(computer image measurement method) were used to examine the PCNA and cell nuclear area in the different layers of the normal oral epith elium(NOR) in 8 cases and abnormal oral epithelium in 46 cases including mild d ysplasia(LD), moderate dysplasia(MD), severe dysplasia(SD) and well-differentia ted squamous cell carcinoma(SCC). Results: The positive PCNA sta ining cells in normal epithelium was found mainly in the basal layer. The prolif erating index(PI) in the whole layer of abnormal oral epithelium were increased (P05). PI in the basal la yer of abnormal epithelium was higher than in NOR (P0.05). PI in the spi nosum layer and superficial layer (granulosum and lucidum layer) increased with the development of the lesions, The cell nuclear area in the basal and spinosum layer of the abnormal epithelium increased(P

Objective To evaluate the role of 5-hydroxy trptarine 2A receptor (5-HT2A) in the pathogenesis of biliary fibrosis after liver transplantation in rats.Method Rats were randomly divided into control group Ⅰ and control group Ⅱ[(supplied livers were preserved for 1 or 12 h),ketanserin group (recipients of control group Ⅱ were intraperitoneally injected with ketanserin 24 h postoperatively at the dosage of 5 mg · kg-1 · day-1),and sham group (rats were subjected to transverse laparotomy and closure without manipulation of the liver).During 4-week observation period,serum biliary enzymes,5-HT content in the liver,the expression of fibrosis-related genes,cholangiocytes proliferation and biliary fibrosis were evaluated.Result Compared with the sham group,the serum ALP,GGT,TBil and 5-HT contents in the liver homogenate were increased on the postoperative day 1 (POD1) and then restored to the normal level.There was slight proliferation of bile duct epithelial cells on POD3 in the control group Ⅰ,with fewer collagen fibers and α-sooth muscle actin (α-SMA)-positive myofibroblasts in the portal area.The expression of matrix metalloproteinase-2 (MMP-2) and procollagen α1-mRNA in graft livers was not significantly increased in the control group Ⅰ.To the contrast,the control group Ⅱ demonstrated high levels of serotonin in the liver homogenate and enhanced serum biliary enzymes.Active cholangiocytes proliferation was triggered on POD3 and remained higher than in the control group Ⅰ and the sham group.The control group Ⅱ showed a large number of α-SMA-positive myofibroblasts and collegan fibers at the postoperative week 4.In parallel,the major profibrogenic transcripts MMP2 and procollagen α1 were significantly increased at 2nd,and 4th week postoperation in the control group Ⅱ.Importantly,we also found that ketanserin relieved the signs of biliary fibrosis at 4th week postoperation in 5-HT2A group by the demonstration of reduced collagen fibers and a-SMA-positive myofibroblast in the portal area,as well as the decrease in the fibrosis-related gene expression.In addition to the lower cholangiocytes proliferation,serum levels of biliary enzymes including GGT,ALP and TBil in 5-HT2A group were significantly decreased at 4th week postoperation as compared with the control group Ⅱ.Conclusion Selective 5-HT2A receptor antagonist,Ketanserin retards biliary fibrosis progression posttransplantation,suggesting that 5-HT2A receptor is a potential therapeutic target for ischemia-related biliary fibrosis after DCD liver transplantation.

Laugier-Hunziker syndrome (LHS) is an acquired pigmentary condition affecting lips, oral mucosa and acral area, frequently associated with longitudinal melanonychia. There is neither malignant predisposition nor underlying systemic abnormality associated with LHS. Herein, we present three uncommon cases of LHS with possibly new feature of nail pigmentation, which were diagnosed during the past 2 years. We also review the clinical and histological findings, differential diagnosis, and treatment of the syndrome in published literature.
Adult ; Female ; Gingival Diseases ; diagnosis ; Humans ; Hyperpigmentation ; diagnosis ; Lip Diseases ; diagnosis ; Male ; Melanins ; analysis ; Middle Aged ; Mouth Diseases ; diagnosis ; Mouth Mucosa ; pathology ; Nail Diseases ; diagnosis ; Syndrome ; Tongue Diseases ; diagnosis

Objective To evaluate the effect of bone marrow mesenchymal stem cell (BMSC) on the expression of interleukin (IL)-10 and tumor necrosis factor (TNF)-α in mice with ischemia-reperfusion acute kidney injury (IR-AKI). Methods All mice were randomly divided into the sham operation group (control group), ischemia-reperfusion injury group (IRI group) and BMSC treatment group (BMSC group), with 6 mice in each group, respectively. The renal function and pathological changes of mice were detected. The cell apoptosis of renal tissues of mice was determined. The expression levels of serum IL-10 and TNF-α of mice were quantitatively measured. The mouse BMSC was randomly divided into the control and hypoxia-reoxygenation groups (IRI group), and the expression levels of IL-10 and TNF-α in cell supernatant were determined. Results The renal structure of mice was normal in the control group, severe damage was observed in the IRI group, and mild damage occurred in the BMSC group. Compared with the control group, the renal tissue injury scores were significantly higher in the IRI and BMSC groups (both P < 0.05). Compared with the IRI group, the renal tissue injury score was significantly lower in the BMSC group (P < 0.05). Compared with the control group, the levels of serum creatinine (Scr) and blood urea nitrogen (BUN) were remarkably up-regulated in the IRI group, and the level of BUN was significantly up-regulated in the BMSC group (all P < 0.05). Compared with the IRI group, the levels of Scr and BUN were significantly down-regulated in the BMSC group (both P < 0.05). In the IRI group, the quantity of apoptotic cells in the renal tissues was considerably higher than those in the BMSC and control groups, and the quantity of apoptotic cells in the BMSC group was significantly higher than that in the control group (all P < 0.05). Compared with the control group, the levels of serum IL-10 and TNF-α were significantly up-regulated in the IRI group, whereas the level of serum TNF-α was significantly down-regulated and the level of serum IL-10 was significantly up-regulated in the BMSC group (all P < 0.05). Compared with the IRI group, the levels of serum IL-10 and TNF-α were significantly down-regulated in the BMSC group (both P < 0.05). The levels of IL-10 and TNF-α in the cell supernatant did not significantly differ between the IRI and control groups (P=0.080、0.627). Conclusions BMSC infusion may reduce the incidence of renal IRI and inflammation, probably via the mechanism of down-regulating TNF-α expression rather than up-regulating IL-10 expression.

Objective To analyze the reasons why patients fail to come to a subsequent visit in outpatient service of Periodontal Department, Peking University School of Stomatology. Measures to reduce the failure rate were explored, so as to perfect the reservation service system. Methods A self-designed questionnaire was handed out to 165 patients who did come to a subsequent visit to the Department of Periodontology during July to December 2013, and 158 were valid. In this questionnaire, factors affecting the patients′ failure to subsequent visit were included, like convenience of registration, satisfaction of the treatment effects, doctors′service attitude and satisfaction of the nurses′ service. Results In our hospital, patients can get registered by queuing on the spot, making a reservation on the consultation desk, 114 telephone reservation and on-line reservation. 89. 23% of queuing registered patients recalled doctors on time, whereas 10. 77% failed to come. For patients who made their initial reservation by consulting the service desk or by 114 phone reservation, 75. 76% came as scheduled, whereas 24. 24% of them failed to come. High rate of failure to come was related to lack of targeted management. Conclusions Differences in ways of getting registered lead to differences in rate of patients′ missing the reservation. This rate can be effectively reduced by perfecting reservation procedure and targeted management.

Objective To evaluate the effect of γ-aminobutyric acid (GABA) and its receptors upon the proliferation of CD8+T cells.Methods The splenic CD8+T cells of Balb/c mice were obtained by CD8+f cell magnetic bead sorting kit.Under the effect of CD3/CD28-activated magnetic bead,CD8+T cells were stimulated by different concentrations of GABA.5-bromo-2-deoxyuridine (BrdU) labeling and flow cytometry were performed to detect the proliferation of CD8+T cells.The expression levels of GABA-A and GABA-B receptor before and after CD8+T cell activation were compared by fluorescent quantitative real-time polymerase chain reaction (PCR).Result Flow cytometry result revealed that GABA could inhibit the proliferation of activated CD8+T cells,manifested as significant decrease in the quantity of CD152+CD8+T cells.Fluorescent quantitative real-time PCR demonstrated that GABA-A receptor subtypes α2,α6 and GABA-B receptor subtype 1a were expressed only when the CD8+T cells were activated.After CD8+T cell activation,the quantity of GABA-A receptor subtypes α3,αs,β2,β3,γ1,γ2 and θ were significantly increased,whereas the quantity of GABA-B2R and GABA-B1b did not significantly differ before and after CD8+T cell activation.Conclusions GABA can suppress the proliferation of activated CD8+T cells.The activation of CD8+T cells is regulated by GABA receptors.However,the underlying mechanism remains to be elucidated.

Objective To investigate the change rules and its significance of erythrocytes surface molecule CD35 , CD58 and CD59 expression in recipients infected with cytomegalovirus (CMV)after renal transplantation. Methods Eighty-two recipients undergoing allogeneic renal transplantation were selected and divided into the negative (n=21 )and positive CMV groups (n=61 )based on the qualitative detection of CMV-pp65 antigen in peripheral blood. According to the results of CMV-pp65 (+)leucocyte count,all 61 patients in positive CMV group were further divided into low (n=55)and high active infection subgroups (n =6 ). Healthy adults were recruited into the normal control group (n =30 ). The expression levels of CMV-pp65 antigen,erythrocytes surface molecule CD35,CD58 and CD59 were measured by flow cytometry. Results Compared with normal control group,the expression levels of erythrocytes surface molecule CD35 , CD58 and CD59 in the positive CMV group were significantly down-regulated,and the CD35 and CD59 expression in the negative CMV group were considerably down-regulated (all P<0. 05 ). Compared with negative CMV group,the expression levels of CD58 and CD59 in the positive CMV group were significantly down-regulated (both P<0. 05 ). The expression levels of CD35 and CD59 in the high active infection subgroup were significantly lower than those in the low active infection subgroup (both P<0. 05 ). Conclusions The more severe active CMV infection after renal transplantation,the lower expression of erythrocytes surface molecule CD35,CD58 and CD59,hinting that red cell immune dysfunction is probably involved with active CMV infection.