Objective The study was designed to investigate the intestinal mucosa barrier function changes in rats with severe acute pancreatitis (SAP),and the intervention effect of epigallocatechin-3-gallate(EGCG) injection and its mechanisms of protection on intestinal mucosa barrier function injury of SAP with the purpose of providing evidence for preventing and curing intestinal mucosa barrier function injury of SAP in clinical practice.Methods A total of 80 healthy male Sprauge-Dawley (SD) rats were randomly divided into a normal group (Normal),a sham-operation group (Sham),a SAP model group (Model),and a EGCG treated group (EGCG),with 24 rats (except 8 rats in the normal group) in each group.The latter three groups each had three subgroups at three time points:6,12,24hours.Rats with SAP were prepared with retrograde cholangiopancreatic duct infusion in 5％ sodium taurocholate.The dynamic changes of the indexes of intestinal mucosa barrier function injury and Pancreas injury were observed at various time points in each group,including the levels of Plasma diamine oxidase (DAO) and serum amylase and malondialdehyde (MDA),nitric oxide(NO),inducible nitric oxide synthase(iNOS)in gut.Results 1.The levels of serum amylase [(3158.64 ± 218.25)μ/L,(4277.24 ± 231.35)μ/L,(5842.76 ± 248.18)μ/L] and plasma DAO concentration [(4.23 ± 0.51) μ/L,(5.13 ± 0.32)μ/L,(7.83 ± 0.76) μ/L] in the Model group were significantly higher at 6 h,12 h,24 h postoperation than the Normal group[serum amylase:(2074.11 ± 101.56)μ/L,DAO:(2.32 ± 0.48) μ/L] and Sham group [serum amylase:(1885.27 ± 103.89) μ/L,(1778.57 ± 98.94) μ/L,(1935.24 ± 105.87) μ/L].The levels of serum amylase [(2576.70 ± 123.43) μ/L,(2783.77 ± 155.53) μ/L,(2902.32 ±176.25) μ/L] and plasma DAO concentration (3.59 ± 0.57) μ/L,(3.98 ± 0.67) μ/L,(6.44 ± 0.71) μ/L in the EGCG group were lower than the Model group,but higher than the Normal group and the Sham group.Compared with the Normal group and the Sham group,the concentration of MDA and NO [MDA:(2.28±0.35) μmol/g,(3.02 ± 0.41) μmol/g,(3.78 ± 0.48) μmol/g ; NO:(16.80 ± 0.60) μmol/g,(18.23 ± 0.78) μmol/g,(20.14±0.82) μ,mol/g] significantly increased in the Model group at 6h,12 h,and 24 h postoperation.The concentration of MDA and NO (1.67±0.14) μmol/g,(1.75±0.16) μmol/g,(1.84±0.22) μmol/g; NO:(9.09±0.31) μmol/g,(9.32±0.44)μmol/g,(10.15±0.52)μmol/g were lower in the EGCG group in all times than the Model group.Compared with the Normal group (0.10) and the Sham group (0.25).The expression ofiNOS was significantly increased in the Model group(1.86).The expression of iNOS was lower in the EGCG group (0.66) in all times than the Model group,but higher than the Normal group and the sham group (P＜0.05).Conclusion Conclusion EGCG can protect the damages of intestinal mucosa barrier function in SAP rats,probably through reducing free radicals,and the iNOS expression.

Objective To analyze the clinical and X-ray manifestations of sclerosing adenosis of the breast,and to evaluate the val-ue of preoperative differential diagnosis between the sclerosing adenosis and the breast cancer combined with pathology.Methods X-ray manifestations and clinical features of 25 patients with the sclerosing adenosis of the breast confirm by surgical pathology were analyzed retrospectively.Then the X-ray manifestations and clinical features were compared with the pathological results.Results Total 25 patients suffered from the sclerosing adenosis of the breast.Among them,2 cases were bilateral sclerosing adenosis,23 ca-ses were unilateral sclerosing adenosis,6 cases with epithelial atypical hyperplasia,4 cases with intraductal papilloma,7 cases with fibroadenoma nodule formation,and the rest with the pure sclerosing adenosis.X-ray manifestations:7 cases presented the medium density nodular shadows with blurred and irregular edges,1 6 cases showed the star-shaped shadows of which 6 cases were the“black stars”,3 cases of“white stars”.One in 7 cases can only see a star shadow,another was unclear or the form was varied.1 3 patients showed the calcification among 4 cases presented the small clusters of distribution with needlepoint-like calcification,2 cases of bulky curved calcification,and the rest with scattered and regional distribution of dot,needlepoint-like calcification.Conclusion Combined with clinical manifestations,the breast X-ray plays an important role in the differential diagnosis of sclerosing adenosis and the breast cancer.

Objective To study the genetic variation of two mitochondrial DNA molecules (CO1 and Cytb gene) of Oncomelania hupensis isolated from different areas. Methods Snails were collected from Jingxi of Guangxi,Yueyang of Hunan and Eryuan of Yunnan. Genomic DNA was extracted from the snails,Co1 and Cytb gene fragments were amplified by PCR,then purified and sequenced. Sequences of each isolates were edited by using Clustal W(1.82) software,and the nucleotide composition,transition and transversion were accounted by using MEGA(3.1) software. The genetic distances were computed with Kimura method and phylogenetic trees were constructed with UPGMA and MP method respectively. Results CO1 and Cytb gene fragments were about 700 bp and 600 bp(including 2 primers) respectively. A total of 106 mutation spots (15.9%) were tested in CO1 homological nucleotides,and 165 mutation spots (28.5%) were tested in Cytb homological nucleotides. The distance matrix between Guangxi isolate and Hunan isolate was 0.051 and 0.031 for CO1 gene and Cytb gene respectively;while that between Guangxi and Yunnan isolates was 0.158 and 0.405 respectively. Phylogenetic trees constructed by UPGMA and MP took on the similar topo-structure:isolates of Guangxi and Hunan clustered into one group,while the Yunnan isolate exhibited as another group. Conclusion Oncomelania hupensis in Guangxi,Hunan and Yunnan are of relatively rich polymorphism in CO1 and Cytb genes in general.

The anti-endotoxic effect of syringic acid (SA) isolated from Radix Isatidis (Banlangen, BLG) was studied. SA was extracted and isolated from BLG and diluted into 1% solution. The content of SA-pretreated endotoxin (ET) was quantitatively determined using Limulus test. The ability of fever induction of ET pretreated with SA was measured using endotoxin-induced fever test in rabbits. The LPS-induced death in mice pretreated with and without SA was compared. Results showed that after pretreatment with SA, 83.16% of ET was destroyed, the ET-induced fever in rabbits relieved markedly and the LPS-induced death rate in mice dropped from 68% to 20%. It was concluded that SA isolated from BLG had anti-endotoxic effects.
Drugs, Chinese Herbal/*pharmacology ; Endotoxemia/blood ; Endotoxins/*antagonists & inhibitors ; Escherichia coli ; Gallic Acid/*analogs & derivatives ; Gallic Acid/*pharmacology ; Isatis/*chemistry ; Limulus Test ; Plant Roots/chemistry

Objective To study the potential roles of acoustic immittance,distortion product otoacoustic e-mission (DPOAE),and the brainstem response audiometry (ABR)in the diagnosis of children with acute non-sup-purative otitis media (AN-SOM).Methods A retrospective analysis was administered to 182 cases with AN-SOM at the otolaryngology department between March 2014 and March 2015.We compared the results of the acous-tic immitance of 218 symptomatic ears and 146 asymptomatic ears,and also the proportion of DPOAE abnormity and ABR abnormity.We analyzed the specialty of symptomatic ears and asymptomatic ears in 3 terms of audiology test results.Results The proportions of abnormal tympanograms,DPOAE,ABR for symptomatic ear were 64.7%, 72.0%,and 57.8%,which were significantly higher than those of in 41.8%,39.7%,and 35.6% in asymptomatic ear.The difference were statistically significant(P<0.05).A further analysis of audiologic results showed that at least one abnormal result was as high as 196 ears (89.9%)in the asymptomatic ear,90 ears (61.6%)showed no symptoms.The differences were statistically significant(P<0.05).The results of audiology tests showed that tym-panograms in symptomatic ears showed diversity,that were 60.6% for type B or C,35.3% for type A,4.1% for the As.Conclusion The early detections by using acoustic immitance,DPOAE and ABR are very important to the diagnosis of children with acute non-suppurative otitis media.It can improve the sensitivity,and reduce the misdi-agnosis.

Objective To establish a microbial limit test for levofloxacin hydrochloride gel. Methods Ca2+ was added to neutralize the antibacterial activity of quinolone,and to form the insoluble precipitate by binding with carbomer, therefore destroying the stability of macromolecules in the gel. The microbial limit test for levofloxacin hydrochloride gel was confirmed combining with membrane filtration and plate methods. Results The normal plate counting was used in detecting the mold and yeast colony in the gel, the recovery was more than 70%.Simultaneously neutralization centrifugation and membrane filtration were used in bacterial count,with recovery less than 70%,and controlling bacteria test. Conclusion The method is accurate and practical for microbial limit test of levofloxacin hydrochloride gel, but is risky for bacterial counting and needs further risk assessment.

Objective To investigate the treatment of symptomatic patent ductus arteriosus (PDA) in very low birth weight preterm infants. Methods From January 1, 2008 to December 31, 2010, 78 very low birth weight preterm infants (birth weight＜1500 g) were diagnosed as symptomatic PDA. Among which, 42 cases administered orally with indomethacin (0.2 mg/kg, every 12 hrs for three times) were taken as treatment group, while five cases in this group who failed to indomethacin treatment were interrupted with video-assisted thoracoscopic surgery. And 36 cases who did not receive treatment for ductus arteriosus were taken as control group. The clinical outcomes, complications and prognosis of these patients were observed. Results There were no significant differences between the gentle percentage, gestational age, diameter of ductus arteriosus, rate of complicated with heart failure, sepsis, neonatal respiratory distress syndrome and intraventricular hemorrhage of two groups (P>0.05, respectively). The ductus arteriosus closed in 33 patients of treatment group (78.6%) and in nine patients of control group (25.0%)(χ2=22.39,P=0.000). There were no significant differences in serum creatinine level and platelet count between before and after the treatment in treatment group(P>0.05). Compared with control group, the treatment group had lower incidence of intraventricular hemorrhage (z=1.167, P=0.030), shorter duration of oxygen therapy [(8.0±5.5) d vs (13.3±9.3) d, t=2.225, P=0.032] and shorter hospital stay [(39.0±7.7) d vs (43.6±10.6) d, t=2.229, P=0.029]; while the incidence of bronchopulmonary dysplasia and necrotizing enterocolitis were similar (P>0.05). The five cases of PDA who received video-assisted thoracoscopic surgery were successfully interrupted with no residual shunt left, while three of them had lung infections and one had pleural effusion, but no pneumothorax and infant death associated with surgery occurred. Conclusions Symptomatic PDA of very low birth weight preterm infants should be treated actively. Oral indomethacin was an effective and safe method to cure the PDA in these infants. Surgical ligation under video-assisted thoracoscopic surgery after failure of indomethacin treatment might be a good option.

AIM: To probe into the pharmacodynamics of Gangchangxiaoyan Capsules (Rhizoma polygoni Cuspidati,Myrrha,olibanum,Bulbus Iphigeniae Rhizoma paridis,etc) concening antibiotics,antiinflammination,analgesia,promoting blood circulation and eliminating blood stasis. METHODS : Bacterial infection,auricle swollen,granulation swollen,writhing,microcirculation dysfunction caused by amniotic fluid were performed. RESULTS : Gangchangxiaoyan Capsules have remarkable effects on mice bacterial infection(P

Based on their inherent relationship,some independent and verifying experiments of medical immunology were intergrated into a series of comprehensive and open experiments,which was embodied in the preparations of antiserum.so as to set up a new experiment teaching system emphasizing the training of student comprehensive capability.Achievements in training students'scientific research capacity,innovative motivation and practical working ability have been obtained and the results could provide valuable experience for innovation and reform of medical immunology experiment teaching model and method.

OBJECTIVE To investigate the antimicrobial susceptibility of 9 antimicrobial agents and multidrug(resistance)(MDR) phenotype among Acinetobacter baumannii isolated from hospitalized patients.METHODS Disk diffusion method was used to detect the inhibitory zone diameter of 9(antimicrobial) agents to 221 strains of A.baumannii.according to standard from NCCLS in South China during 2002 to 2004.RESULTS 25.3% and 26.4% of isolates from ICU patients showed resistance to(imipemem) and meropemem,respectively,and the resistance rates were greater among the(isolates) from ICU(patients) than those from non-ICU inpatients by 13.4% and 12.2 %(P