Objective To research the role of matrix metalloproteinase-9(MMP-9), transforming growth factor ?1(TGF-?1) in viral myocarditis(VM) and their relationships with myocardial fibrosis, and to explore the forensic significance on sudden death due to viral myocarditis. MethodsSelected 30 cases of VM as experimental group,there cases were divided into definite VM group(n=18) and borderline VM group (n=12);Non-VM(n=10) were selected as control group. Collagen hyperplasia was observed by Masson staining. The expression and localization of MMP-9 and TGF-?1 in viral myocarditis were quantified by immunohistochemical method. Image analysis systems and statistical methods were used for quantitative analysis. ResultsThe amount of collagen fibre in the viral myocarditis group was more than that in the control group. The expression of MMP-9 and TGF-?1 were increased obviously. MMP-9、TGF-?1 expression were positively correlated with the collagen hyperplasis. ConclusionsThe MMP-9 and TGF-?1 may contributes to myocardial fibrosis, and may act as the assistant diagnostic indexes of sudden death due to viral myocarditis.

Objective To observe the curative effect of sirolimus conversion for liver transplantation patients with chronic renal injury.Methods In 23 recipients of liver transplantation using CNI (19 cases using tacrolimus,and 4 cases using cyclosporine A) with chronic renal injury,the immunosuppressant was converted to sirolimus (SRL).The initial dose of SRL was 4 mg per day and 2 mg at the next day.The blood SRL concentration was determined by using high pressure liquid chromatography.When the valley value of SRL concentration reached a range between 5 to 8μg/L,CNI was withdrawn and MMF (1 g/day) was given simultaneously.The basal values of serum creatinine (Scr),creatinie clearance rate (Ccr) and glomerular filtration rate (GFR) were recorded in the recipients before study,and at 1st,3rd,6th,12th,and 24th month after using SRL,blood SRL concentration,Scr,Ccr and GFR,as well as body weight,blood pressure,blood cells count,liver function (serum bilirubin,albumin and prothrombin time),liver biochemistry (AST,ALT,γ-GT and AKP),blood fat (cholesterol and triglyceride) and urine protein were monitored.At the 12th month after using SRL,the graft liver was biopsied to diagnosis rejection.Results During an average followup period of 29.4 months,there were two deaths.In the remaining 21 cases,the Scr values were (147.40 ± 23.36),(152.60 ± 20.08),(150.20 ± 22.64),( 137.60 ± 18.09) and (138.30 ± 17.04)μmol/L,respectively at 1st,3rd,6th,12th,24th month after using SRL.As compared with basal Scr values [(158.91 ± 29.13) μmol/L],there were statistically significant differences at 1at,12th,24th month (P＜0.05).The Ccr values were (0,97 ± 0.18),(0.99 ± 0.1 4),( 1.00 ± 0.17),(1.07 ±0.29) and (1.14±0.12) ml/s,respectively at 1st,3rd,6th,12th,24th month after using SRL.As compared with basal Ccr value [(0.91 ± 0.14) ml/s],there were statistically significant differences at 1st,12th,24th month (P＜0.05).The GFR values were (0.80 ± 0.15),(0.78 ± 0.11),(0.75 ±0.12),(0.84 ± 0.10) and (0.94 ± 0.13) ml/s,at 1st,3rd,6th,12th,24th month after using SRL.As compared with basal GFR value [(0.71 ± 0.11) ml/s],there were statistically significant differences at 1st,12th,24th month (P＜0.05).The proportion of patients with Scr≤123 μmol/L in 21 cases was 38.1％,33.3 ％,28.6 ％,47.6 ％ and 52.4 ％,respectively at 1 st,12th,24th month (P＜0.05).No rejection cases were observed.Conclusion The immunosuppressant conversion to SRL improves renal function of liver transplantation patients with chronic renal injury,and the conversion cure can not cause rejection.

ObjectiveTo observe female university students' differences of cognitive mechanism in processing different types of sexual picture from International Affective Picture System (IAPS).MethodsUsing event related potential (ERP),the differences of the amplitudes of N2,P3 and PSW were examined induced by the neutral pictures and different types of erotic pictures.ResultsThe amplitudes of N2 ( (0.99 ±1.69 ) μV) and P3 ( ( 17.27 ± 1.45 ) μV) elicited by heterosexual couple erotic pictures were highest,followed by the male erotic pictures( ( -0.02 ± 1.83 ) μV,( 15.92 ± 1.26 ) μV),and then were the female erotic pictures ( ( -0.22 ± 1.56)μV,( 15.49 ±1.34) μV).There was statistical significance in N2 and P3 between heterosexual couple erotic pictures and female erotic pictures ( P ＜0.05 ).There was no significant difference in PSW component between heterosexual couple erotic pictures( ( 15.22 ± 1.98 ) μV) and female erotic pictures ( ( 14.53 ± 1.75 ) μV ),but the PSW induced by male erotic pictures (( 10.93 ± 2.60 )μV) was significantly smaller than the other sexual pictures (P＜0.05).ConclusionThe level of sexual arousal elicited by explicit heterosexual couple erotic pictures is highest and also the attention maintains longest.

Objective To approach the effect of telbivudine for preventing recurrence of virus and improving renal function in patients with hepatitis B cirrhosis after liver transplantation with renal insufficiency,and observe the mid-and long-term efficacy.Methods We prospectively researched 17 cases of hepatitis B cirrhosis after liver transplantation with renal insufficiency.Maintenance irnmunosuppression protocol at our centre mainly included calcineurin inhibitor (tacrolimus for 12 cases,and sirolimus for 5 cases).These recipients (n =17) remained under the entecavir (n =10),tenofovir (n =4),lamivudine + adefovir (n =3) for at least 6 months before transformation to telbivudine.We detected HBV-DNA level in serum and ensured no rejection during study,necessarily punctured the graft liver for biopsy to determine if there was rejection.The basal values of blood serum creatinine (Scr) and estimated glomerular filtration rate (eGFR,CKD-EPI formula) were recorded.The Scr and eGFR at 6th month before research and basal values and at 6th and 12th month after telbivudine administration were detected,at the same time the general state and adverse reactions were evaluated.Results During the average follow-up period of 20.2 months,1 patients died.The Ser levels detected in the rest 16 patients were 105.74± 18.24,112.26± 18.67,96.48±22.0 and 89.17± 19.56μμmol/L respectively at 6th month before,basal time and 6th,12th month after telbivudine administration.The eGFR values were 72.56 ± 14.39,66.23 ± 16.61,79.77 ± 20.15 and 83.93 ± 23.67 mL/(minute,m2) at different time points respectively.As compared with the basal value,the Scr and eGFR levels were improved obviously (P＜0.05) at 6th and 12th month after telbivudine administration.The proportion of patients with eGFR ＜60 mL/(min·m2) in 16 cases was 25％,37.5％,12.5％ and 6.3％ respectively at 6th month before,basal time and 6th,12th month after telbivudine administration.The serum creatine phosphokinase level was increased (1 023 IU/L) in 1 patient (6.3％),and decreased after transformation of telbivudine to tenofovir at 3rd month after end of research.No rejection and HBV occurred.Conclusion The telbivudine improves renal function in patients with hepatitis B cirrhosis after liver transplantation with renal insufficiency.Meanwhile,telbivudine prevents hepatitis virus B recurrence.However,large samples of long-term clinical data are needed to further confirm.

Objective To explore the effect of Xiangpi Shengji Ointment on wound healing and apoptosis-related Fas/Fas L pathway in model rats after anal fistula operation.Methods Thirty-six SD rats were used to construct the anal fistula model by using steel wire hanging line and indwelling for 30 days.After successful modeling,27 rats with anal fistula were randomly selected for"fistulectomy"to construct a postoperative wound model.After operation,the wound model rats were randomly divided into three groups,9 rats in each group,which were Xiangpi Shengji Ointment Group,Vaseline Group and Model Group,and the remaining 9 rats with anal fistula were sham operation group.The rats in the Xiangpi Shengji Ointment group were externally applied with Xiangpi Shengji Ointment gauze,while those in the Vaseline group were externally applied with Vaseline gauze.The rats in the model group were only disinfected and rinsed.No special treatment was given to the rats in the sham operation group.The wound healing was observed on the 3rd,5th,7th and 10th day after medication intervention,and the wound healing rate was calculated.After 10 days of continuous intervention,wound tissues were taken from each group,and the histopathological changes,the number of apoptosis,the expressions of Fas,Fas L,caspase-8 and cyto-c in wound tissues were observed by HE staining,TUNEL staining and immunohistochemistry respectively,and the mRNA expressions of Fas,Fas L and cyto-c in wound tissues were detected by RT-PCR.Results Compared with the model group,Xiangpi Shengji ointment group and Vaseline group significantly promoted wound healing at 7 and 10 days after intervention(P<0.01),and the wound healing rate of Xiangpi Shengji ointment group was significantly higher than that of Vaseline group(P<0.01).After 10 days of drug intervention,compared with sham operation group,the apoptosis rate of Xiangpi Shengji ointment group,Vaseline group and model group increased significantly(P<0.01),and the relative expressions of Fas,Fas L and cyto-c mRNA and the expression levels of Fas,Fas L,caspase-8 and cyto-c protein in wound tissue increased significantly(P<0.05,P<0.01).Compared with the model group,the apoptosis rate,the relative expression of Fas,Fas L and cyto-c mRNA and the expression level of Fas,Fas L,caspase-8 and cyto-c protein in Xiangpi Shengji ointment and Vaseline groups decreased significantly(P<0.05,P<0.01).Compared with Vaseline group,the apoptosis rate of Xiangpi Shengji ointment group decreased significantly(P<0.01),and the relative expression of Fas,Fas L and cyto-c mRNA and the expression level of Fas,Fas L,caspase-8 and cyto-c protein decreased significantly(P<0.05,P<0.01).Conclusion Xiangpi Shengji Ointment can inhibit the activation of Fas/Fas L pathway,reduce the apoptosis of wound tissue cells and promote wound healing after anal fistula operation.

OBJECTIVETo screen of high cariogenicity Streptococcus mutans (S. mutans) strains isolated from clinical specimens preliminary.

METHODSAcidogenicity, aciduricity, extracellular polysaccharide production and adhesion of 41 strains of S. mutans isolated from clinical specimens were investigated to screen high cariogenicity S. mutans strains.

RESULTSThere were different cariogenicity among 41 strains of S. mutans, in which 3 strains of S. mutans had all high ability to produce extracellular polysaccharide, adhere to the saliva-coated hydroxyapatite, produce acid and tolerate acid, indicated there were 3 strains with high cariogenicity S. mutans strains isolated from clinical specimens. Another 3 strains of S. mutans with all low ability to produce extracellular polysaccharide, adhere to the saliva-coated hydroxyapatite, produce acid and tolerate acid indicated they were low cariogenicity S. mutans strains isolated from clinical specimens.

CONCLUSIONWe may have obtained high cariogenicity S. mutans strains isolated from clinical specimens.

Dental Caries ; Durapatite ; Humans ; Saliva ; Streptococcus mutans

OBJECTIVETo identify Streptococcus mutans (S. mutans) strains from clinical samples.

METHODSPlaque samples from caries-active and caries-free sites on enamel surfaces were obtained and cultivated for S. mutans isolation. Morphology, biochemistry, automatic microorganism analysis system and polymerase chain reaction using primers homologous to surface protein antigen I/II (spaP), glucosyltransferase B (gtfB) and dextranase (dexA) were used to identify S. mutans. Genotype of isolated S. mutans was determined by arbitrarily primed polymerase chain reaction.

RESULTSForty-six strains of S. mutans were obtained from the 32 subjects and were identified as S. mutans by biochemistry, automatic microorganism analysis system and polymerase chain reaction. Five identical genotypes were found by arbitrarily primed polymerase chain reaction.

CONCLUSIONForty-one strains of S. mutans with different genotype were obtained from clinical samples.

Dental Caries ; Dental Plaque ; Genotype ; Glucosyltransferases ; Humans ; Polymerase Chain Reaction ; Streptococcus mutans

OBJECTIVETo select and identify ssDNA aptamers specific to Streptococcus mutans strains with different cariogenicity isolated from clinical specimens.

METHODSSubtractive SELEX technology targeting the whole intact cells was used to screen for ssDNA aptamers specific to the clinical isolates Streptococcus mutans strains with different cariogenicity. Radioactive isotope, flow cytometry, gene cloning and sequencing, MEME online software and RNA structure analysis software were employed to analyze the first and secondary structures of the aptamers and identify the screened aptamers.

RESULTSDetection by radioactive isotope showed sufficient pool enrichment after 9 rounds of subtractive SELEX. Flow cytometry showed that the selected aptamers H1, H16, H4, L1, L10 and H19 were capable of binding specifically with highly cariogenic Streptococcus mutans strains but not with strains with a low cariogenicity. The aptamer H19 had the strongest binding capacity to highly cariogenic Streptococcus mutans strains, with a dissociation constant of 69.45∓38.53 nmol/L.

CONCLUSIONWe have obtained the ssDNA aptamers specific to the clinical isolates of highly cariogenic Streptococcus mutans strains.

Aptamers, Nucleotide ; genetics ; Cloning, Molecular ; DNA Primers ; Dental Caries ; microbiology ; Gene Library ; Humans ; Nucleic Acid Conformation ; SELEX Aptamer Technique ; Species Specificity ; Streptococcus mutans ; classification ; genetics ; isolation & purification

Objective To investigate the clinical efficacy of basiliximab-induced glucose-free corticosteroid immunosuppressive regimen after liver transplantation.Methods The retrospective cohort study was conducted.The clinicopathological data of 227 patients with liver transplantation who were admitted to Bayi Hospital affiliated to Nanjing University of Traditional Chinese Medicine from January 2010 to October 2016 were collected.Of the 227 patients,125 who postoperatively received a glucose-free corticosteroid immunosuppressive regimen using a monoclonal antibody + tacrolimus + mycophenolate mofetil tablets were allocated into the hormone-free group,and 102 who were postoperatively treated with the immunosuppressive regimen using glucocorticoid steroid + tacrolimus + mycophenolate mofetil tablets were allocated into the hormone group.Observation indicators:(1) comparison of follow-up and survival;(2) comparison of postoperative infection,rejection and biliary stenosis between groups.Follow-up using outpatient examination and telephone interview was performed to detect postoperative survival,infection,rejection and biliary stenosis up to June 2017.The measurement data with normal distribution were represented as (x) ± s,and comparison between groups was done by the t test.Measurement data with skewed distribution were described as M (P25,P75) and M (range),and comparison between groups was analyzed using the rank sum test.The count data were compared by the chi-square test.Kaplan-meier method was used to draw survival curve and calculated survival rate.Log-rank test was used for survival analysis.Results (1) Comparison of follow-up and survival:patients between groups were followed up for 9-89 months,with a median time of 45 months.The 1-and 3-year overall survival rates were respectively 93.25％,85.24％ in the hormone-free group and 89.89 ％,74.22％ in the hormone group,with a statistically significant difference (x2 =8.450,P＜0.05).(2) Comparison of postoperative infection,rejection and biliary stenosis between groups:① The total cases with postoperative infections,cases with infection of Klebsiella pneumoniae,Staphylococcus aureus,Candida,Acinetobacter baumannii and Stenotrophomonas maltophilia were 25,18,3,2,2,0 in the hormone-free group and 40,26,6,3,3,2 in the hormone group,respectively,showing a statistically significant difference between groups (x2 =10.149,P＜0.05).The patients between groups with postoperative infection were treated with active anti-infective symptomatic treatment.Three patients in the hormone group died of severe pulmonary infection,and the remaining patients in both groups were improved.② The cases with postoperative rejection in the hormone-free group and hormone group were 6 and 5,respectively,with no statistically significant difference (x2 =0.950,P＞ 0.05).The rejection of both groups occurred within 1 week postoperatively.Two patients in the hormone group were treated with glucocorticoid hormonal shock.The other patients in the 2 groups were improved by adjusting the amount of tacrolimus and mycophenolate mofetil tablets.③ The cases with postoperative biliary stenosis in the hormone-free group and the hormone group were 32 and 8 respectively,with a statistically significant difference (x2 =12.200,P＜0.05).In the hormone group,biliary stenosis occurred after stopping glucocorticoids.The patients with biliary stenosis were improved after biliary stent implantation by endoscopic retrograde cholangio pancreatography (ERCP).Conclusion The basiliximab-induced glucose-free corticosteroid immunosuppressive regimen after liver transplantation is safe and feasible,and it can significantly reduce the incidence of postoperative infection and improve long-term overall survival compared with the conventional glucocorticoid immunosuppressive regimen,but increased postoperative biliary stenesis.

Ulcerative colitis （UC） is one of the main manifestations of inflammatory bowel disease. Because of its lingering and refractory nature， it has become a major public health challenge worldwide. In the treatment of UC， traditional Chinese medicine （TCM） effectively relieves clinical syndromes， shortens the treatment period， reduces the frequency of recurrence， improves the quality of life， and reduces the occurrence of complications. To study the specific mechanism of TCM in the treatment of UC and screen out suitable drugs under the guidance of syndrome differentiation， the suitable UC animal model in the combination of disease and syndrome is used as an important method. This paper summarized and compared the UC animal model in the combination of disease and syndrome from five aspects， including selection of model animal species， sexual selection， preparation methods of UC animal model in the combination of disease and syndrome， indicators of model evaluation， and the main mechanism of TCM intervention in UC animal model in the combination of disease and syndrome. This paper aimed to provide references for the establishment of the optimal UC animal model in the combination of disease and syndrome. Research shows that UC syndrome mainly studied at present includes damp-heat syndrome， spleen deficiency syndrome， spleen-kidney Yang deficiency syndrome， spleen deficiency and dampness accumulation syndrome， liver depression and spleen deficiency syndrome， and cold-heat mixed syndrome.In the modeling method， the etiology simulation method is mainly used to first copy the syndrome type before the chemical agents or immune preparations were used to induce the disease model，and rats were often selected as the research objects，and the replication cycle was 7 to 28 days.The selected chemical reagents were mainly 5% dextran sulfate sodium（DSS） free drink, 2,4,6-trinitrobenzenesulfonic acid（TNBS） 100 mg·kg^-1 and 50% ethanol 0.25 mL mixed reagent enema.This model replication method can take into account both UC pathogenesis characteristics of pathology of western medicine and TCM， syndrome type of traditional Chinese medicine and western medicine for interpretation pathological changes and TCM treatment of UC associated mechanism is of great significance， and help to help toestablish the optimal condition in combination with UC animal models for reference， for further research on prevention and treatment of UC specific mechanism of action of TCM model basis.