Objective To evaluate the clinical value of the three-category classification of severe acute pancreatitis (SAP).Methods Clinical data of 337 traditional SAP patients,who were admitted to Peking Union Medical College Hospital (PUMCH)from January 2001 to December 2012,were retrospectively studied.These patients were classified into moderately severe acute pancreatitis (MSAP) and severe acute pancreatitis (SAP) according to the latest 2013 Atlanta Classification.SAP patients were further categorized as critical acute pancreatitis (CAP) and non-CAP.Disease severity,therapy and prognosis among three groups were compared.Results Among the total 337 traditional SAP patients,253 were classified as MSAP and 84 as SAP.In the group of SAP,40 patients were categorized as CAP and 44 as non-CAP.Compared with non-CAP patients,CAP patients had significantly higher mortality rate which was 70％ (28/40).Other results were all significantly higher in CAP group rather than non-CAP group,including ICU admission rate 77.5％(31/40),length of ICU stay (15.5 ± 20.6) days,Ranson,APACHE Ⅱ,BISAP,MCTSI,modified Marshall scores 4.6 ± 1.4,16.8 ± 5.8,3.0 ± 1.0,8.6 ± 1.7,and 7.4 ± 2.9,respectively (P ＜ 0.01 in each endpoint).These parameters of SAP group were also significantly higher than those of MSAP group (P ＜0.01).Conclusions Using the new three-category classification to distinguish traditional severe acute pancreatitis,namely MSAP,SAP,and CAP,can better reflect the severity of disease,predict outcome and guide clinical management.

OBJECTIVE To survey the antibiotic susceptibility of Pseudomonas aeruginosa and medical treatment among the aged patients suffering from underlying disease.METHODS A total of 326 strains of P.aeruginosa were isolated among the aged patients with underlying disease by sputum culture.Drug susceptibility was performed and effective antibiotic treatment was given.RESULTS Amikacin(8.0%),imipenem(12.0%) and piperacillin/tazobactam(16.0%) could be chosen.The symptom of 326 patients was alleviated after clinical treatment,while some sputum samples were found still positive.CONCLUSIONS Combined use of two kinds of medicines may produce better effects in the patients with underlying disease,who infected with P.aeruginosa,but sputum should not be emphasized to converse negative in this case.

AIM: To evaluate the ability of spectral domain optic coherence tomography ( SD-OCT ) parameters to detect progressive structural damage in primary open angle glaucoma ( POAG) by contrasting with visual field. ·METHODS: Retrospectively we evaluated 48 subjects (48 eyes ) of POAG, followed up 14 to 62mo. The parameters of SD-OCT and visual field were obtained. The correlation between the change of visual field measurements and OCT measurements were analyzed. Visual field progression was defined as reproducible drop of at least 2dB of mean deviation (MD) from the baseline visit. ROC curve was made to evaluated the ability of OCT parameters in detect progression of POAG. ·RESULTS: The 25 eyes were classified in progression group and 23 eyes were in non-progression group. No significant correlation was seen between OCT parameters and visual field in non-progression group. In progression group, OCT parameters which were significantly correlated with MD reduce were rim volume ( r=-0. 5997, P=0. 0007), C/D vertical ratio (r=-0. 6309, P=0. 0003), RNFL(r= 0. 4201, P= 0. 0260), and GCC(r= 0. 7080,P<0. 01). ROC curves showed the GCC reflected the reduce of MD accurately (P=0. 013). ·CONCLUSION: Part parameters of SD-OCT can reflect the progression of POAG accurately and provided a new method to detect the damage of visual function of POAG.

Objective The protective effect of hydrogen sulfide (H2 S) against myocardial ischemia/reperfusion ( IR) injury via anti-apoptotic signaling is well established , but the underlying mechanism remains unclear .This study was to investigate whether H 2 S could protect cardiomyocytes from endoplasmic reticulum stress ( ERS)-mediated apoptosis in hypoxia/reoxygenation ( HR) injury by regulating the expression of microRNA-455 ( miR-455 ) . Methods Cardiomyocytes from neonatal SD rats were primarily cultured and the model of HR injury was established .The cardiomyocytes were divided into a control group (normally cultured for 27 hours), an HR group (subjected to HR injury), and an H2S protection group (pretreated with the precursor of H2S NaHS at 40 μmol/L at 30 min before HR treatment followed by the same procedure as in the HR group ) .The cell viability was monitored by MTT , the release of lactate de-hydrogenase ( LDH) in the culture supernatant measured by full-automatic chemical analysis , and the apoptosis rate of the cardiomyo-cytes detected by flow cytometry .The mRNA and protein expressions of Grp 78 and caspase-12 were determined by real-time RT-PCR and Western bot .To verify whether miR-455 was involved in the ERS-mediated apoptosis of the cardiomyocytes , the cells were subjec-ted to HR after transfected with miR-455 mimic or anti-miR-455 oligonucleotide (AMO) for 24 hours, followed by detection of the ex-pressions of Grp78 and caspase-12. Results After HR injury, the H2 S protection group showed an enhanced viability of the cardio-myocytes in comparison with the control group ([67.02 ±6.90] vs [29.27 ±5.66] %), an decreased LDH release ([91.33 ± 10.63] vs [168.17 ±15.38] U/L), and a reduced rate of cell apoptosis ([13.98 ±1.90] vs [24.31 ±2.79] %).H2 S pretreat-ment significantly downregulated the mRNA and protein expressions of Grp 78 and caspase-12 (1.66 ±0.39 vs 2.56 ±0.34;1.75 ± 0.32 vs 2.54 ±0.48;2.01 ±0.45 vs 3.26 ±0.34;1.85 ±0.52 vs 3.21 ±0.84, P<0.05).The mRNA and protein expressions of Grp78 and caspase-12 were evidently increased after transfection with miR-455 mimic (3.56 ±0.37 vs 1.00 ±0.00;3.61 ±0.41 vs 1.00 ±0.00;2.87 ±0.38 vs 1.00 ±0.00;2.98 ±0.49 vs 1.00 ±0.00), but remarkably decreased after transfection with miR-455 AMO (0.62 ±0.16 vs 1.00 ±0.00;0.65 ±0.13 vs 1.00 ±0.00;0.54 ±0.13 vs 1.00 ±0.00;0.62 ±0.16 vs 1.00 ±0.00, P<0.05). Conclusion H2S could protect cardiomyocytes from HR injury by regulating the expression of miR-455 and reducing ERS-mediated cell apoptosis .

Colitis, Ulcerative ; complications ; drug therapy ; Humans ; Male ; Middle Aged ; Psoriasis ; complications ; drug therapy ; Pyoderma Gangrenosum ; drug therapy ; etiology

OBJECTIVETo evaluate percutaneous reduction by Kirschner pin and internal fixation with cancellous screw and plate through minimal incision at the lateral side of heel for the treatment of intra-articular displacement fracture of calcaneus.

METHODSFrom September 2009 to June 2012, 80 patients with close intra-articular displacement fractures of calcaneus were divided into treatment group and control group. There were 40 patients in the control group, including 21 males and 19 females, ranging in age from 23 to 64 years old, averaged (39.1 +/-11.7) years old; and the patients were treated with fixation by compress screws and plates of self-broken type. There were 40 patients in the treatment group, including 24 males and 16 females,ranging in age from 21 to 67 years old, averaged (39.6+/-14.3) years old;and the patients were treated with full thread cancellous screws and plates fixation. The fixation time,intra-operative blood loss and the number of injured medial plntar nerve were compared between the two groups. The Böhler angle, Gissane angle and the correction degree of calcaneal width were measured at 1 year after operation. The internal fixators were taken out after 1 year. The AOFAS ankle-hindfoot score was used to evaluate therapeutic effects.

RESULTSAll the patients were followed up,and the duration ranged from 9 to 32 months, with a mean of 16 months. There were shorter operation time, less injury, satisfactory postoperative Böhler angle and calcaneal width in treatment group compared with control group,which reduced the medial neurovascular injuries, and the plate was easily removed after fracture healing.

CONCLUSIONFull thread cancellous screws and plate fixation for the treatment of calcaneal fractures could get same therapeutic effects as compress screws and plate of self-broken type fixation, and also has follow advantages: shortening the operation time, reducing blood loss, easily to be removed, avoiding the medial neurovascular damage, reducing the incidence of complications.

Adult ; Aged ; Bone Plates ; Bone Screws ; Calcaneus ; injuries ; Case-Control Studies ; Female ; Fracture Fixation, Internal ; methods ; Fractures, Bone ; surgery ; Humans ; Male ; Middle Aged

Objective To evaluate the effects of infective necrosis (IN) on prognosis in moderately severe or severe acute pancreatitis (AP).Methods According to the revision of Atlanta classification,from January 2001 to January 2015,admitted patients with moderately severe or severe AP were retrospectively analyzed.According to whether with the presence of persistent organ failure (POF) and / or IN,the patients were divided into four groups:group one with weither IN nor POF,group two with IN but without POF,group three with POF but without IN,group four with both IN and POF.The differences in disease severity and prognosis among groups were compared.Logistic regression and Cox proportional hazard regression model were used to analyze the effect of IN on prognosis.Results A total of 375 moderately severe or severe AP patients were enrolled.There were 211,43,90 and 31 patients in group one,two,three and four,respectively.A total of 121 (32.3％) patients with POF,74 (19.7％) patients with IN,and death in 63 (16.8％) patients.The mortality rate in patients with IN was 32.4％ (24/74),and which was 13.0％(39/301) in patients without IN.The mortality rates of group one,two,three and four were 1.9％(4/211),11.6％(5/43),38.9％(35/90) and 61.3％(19/31),respectively;mortality rate was in a trend of increasing,and the difference was statistically significant (x2 =109.672,P＜0.01).Both IN (OR=8.24,95％CI2.09 to 32.46) andPOF (OR=8.31,95％ CI2.48 to 27.87)were independent risk factors of mortality of AP patients (both P＜0.01).Both IN (OR=2.04,95 ％CI 1.19 to 3.48,0.002) and POF (OR=5.25,95％CI 2.36 to 11.65) also were independent risk factors of shortened survival time of AP patients (both P＜0.01).Conclusions IN is an independent risk factor of disease severity and poor prognosis in AP.The prognosis is the worst in AP patients with both POF and IN.

With the development of wireless networks and mobile intelligent terminal the new media technology is profoundly changing people's lifestyle and study mode. We applied new media technologies to the teaching practice of eight-year medical program to stimulate students' learning en-thusiasm and productivity, which greatly expanded the knowledge of students, enrich teaching methods, and achieved good teaching effect.

The present study aims to evaluate the effect of Galla chinensis compounds on the remineralization of two artificial root lesions morphous in vitro. Sixty bovine dentine blocks were divided into two groups and individually treated with two levels of demineralization solutions to form erosive and subsurface artificial carious lesions in vitro. Each group was then divided into three subgroups, each of which were treated with a remineralization solution (positive control), deionized water (negative control), or 4 000 mg⋅L(-1) aqueous solutions of Galla chinensis extract. The dentine blocks were then subjected to a pH-cycling regime for 7 days. During the first 4 days, the daily cycle included 21-h deal and 3-h demineralization applications. The dentine blocks were dealt with the entire day during the remaining 3 days. Two specimens from each of the treatment groups were selected and observed under a polarized light microscope. Data collected using a laser scanning confocal microscope were computerized and analyzed. Galla chinensis extract clearly enhanced the remineralization of both erosive lesion and subsurface lesion patterns in the specimens (P<0.05). The level of remineralization of the erosive lesion by Galla chinensis extract was lower than that of the subsurface lesion (P<0.05). In addition, the remineralization of the subsurface lesion by Galla chinensis extract was higher than that of the remineralization solution (P<0.05). No significant difference between the remineralization of erosive lesions by Galla chinensis extract and the remineralization solution was observed (P>0.05). So Galla chinensis extract has the potential to improve the remineralization of artificial root lesions under dynamic pH-cyclic conditions, indicating its potential use as a natural remineralization medicine.
Animals ; Cariostatic Agents ; therapeutic use ; Cattle ; Dentin ; pathology ; Drugs, Chinese Herbal ; chemistry ; therapeutic use ; Gallic Acid ; therapeutic use ; Hydrogen-Ion Concentration ; Hydrolyzable Tannins ; therapeutic use ; Microscopy, Confocal ; Microscopy, Polarization ; Polyphenols ; therapeutic use ; Random Allocation ; Root Caries ; drug therapy ; Tooth Remineralization

OBJECTIVETo prepare a monoclonal antibody (mAb) against extracellular domain of B7-H4 and to investigate the expression of B7-H4 in pancreatic cancer tissue with the prepared mAb.

METHODSBalb/c mice were immunized with 3T3-B7-H4 cells and the splenic cells of the immunized mice were fused with Sp2/0 myeloma cells by conventional hybridoma techniques. An indirect ELISA method using 3T3-B7-H4 lysate as antigen was established to screen antibody-producing hybridoma cell lines. Western blott, immunoprecipitation (IP), and immunohistochemistry (IHC) were applied to characterize the mAb. Immunohistochemical staining was used to detect the expression of B7-H4 in human pancreatic cancer tissue. The correlation of B3-H4 expressions and pathological features of pancreatic cancer was analyzed.

RESULTSA hybridoma cell line secreting mAb against B7-H4 was obtained. The subclass of this mAb was IgM, and the light chain was Kappa. Western blot and IP showed that the mAb specifically recognized B7-H4. IHC staining revealed that the mAb stained in a predominantly diffuse plasmalemmal or cytoplasmic pattern when applied to certain tumor tissues. The B7-H4 was diffusely expressed in the cytoplasma and/or membrane of pancreatic cancer tissue, which was much higher than that expressed in normal pancreatic tissue (4.00 ± 1.44 compared with 1.12 ± 0.78, P ± 0.01). The expression of B7-H4 was higher in pancreatic cancer tissues with higher pathological grade or with lymph node metastasis as compared with that in pancreatic cancer tissues with lower grade or with no lymph mode metastasis (6.10 ± 0.72 compared with 3.55 ± 1.12,P<0.01: 6.14 ± 0.66 compared with 3.70 ± 1.25,P<0.01). The expression level of B7-H4 was not related to patients'age and gender.

CONCLUSIONMonoclonal antibody against B7-H4 with high activity and specificity has been prepared successfully. The expression of B7-H4 in pancreatic cancer tissue is up-regulated,which is closely related to the tumor grade and lymph node metastasis in pancreatic cancer.

3T3 Cells ; Animals ; Antibodies, Monoclonal ; biosynthesis ; Cell Line, Tumor ; Humans ; Immunohistochemistry ; Lymphatic Metastasis ; Mice ; Mice, Inbred BALB C ; Neoplasm Grading ; Pancreatic Neoplasms ; metabolism ; pathology ; V-Set Domain-Containing T-Cell Activation Inhibitor 1 ; metabolism