This study was aimed to establish the classification method of Chinese herbal medicine based on feature parameters extracted from images of herbal transverse section, in order to explore the feasibility of automatic identi-fication method of herbal medicine. The extracted 26 parameters of 18 herbal medicine images by gray-level co-oc-currence matrix and grayscale gradient matrix were used as the basic data set. And the minimum covariance determi-nant (MCD) was used to delete the outliers. A total of 18 identification models were established using the native Bayes method and BP neural network methods. The results showed that the average correct rates of models were 90%. It was concluded the feasibility of using these models in the establishment of the automatic identification method of herbal medicines. It provided new technologies for the quantitative, scientific and objective identification of Chinese herbal medicine.

OBJECTIVE: To compare the therapeutic effects of red peony root decoction, a compound traditional Chinese herbal medicine, and rhubarb in treating severe acute pancreatitis (SAP). METHODS: A total of 96 consecutive patients with objectively-graded SAP were randomly divided into treatment and control groups. There were 48 cases in each group. The patients in the treatment and control groups were assigned to receive red peony root decoction and rhubarb treatment 1-2 times a day via a gastric tube respectively. Comparisons in the time needed for the disappearance of abdominal tenderness, fever and abdominal distension were made between the two groups. The total days of using antibiotics, enzyme inhibitor, protease inhibitor, and nasojejunal feeding start, nasojejunal feeding, gastrointestinal decompression, fasting diet were also compared. And comparison also included hospital stays and hospitalization costs. RESULTS: The durations of abdominal tenderness, fever and abdominal distension in the treatment group were less than those in the control group (P<0.05). Compared with the control group, the time length for antibiotics (including anti-bacteria drug and antifungal agent) use, nasojejunal feeding start, nasojejunal feeding, gastrointestinal decompression, fasting diet, hospital stays and hospitalization costs were decreased in the treatment group (P<0.05). There were no significant differences between the two groups in enzyme inhibitor and protease inhibitor requirement, mortality and adverse reactions. CONCLUSION: Red peony root decoction is more effective than rhubarb alone for SAP patients.

Objective To investigate the timing of early naso-jejunum nutritional support on severe acute pancreatitis(SAP) patients and its feasibility and safety. Methods 72 patients with SAP were enrolled and randomized into experiment group and control group according to random number. EN (enteral nutrition) was administrated in the experiment group when the patients' circulation were relatively stable, abdominal distention decreased and the bowel sound could be heard; while EN was administrated in the control group when the patients' vital signs were stable, and peristalsis recovered with exhaust and sense of hunger, without obvious abdominal distention. The cultivation of secretions, hospital stay and overall cost of hospitalization were evaluated in the two groups of patients. Results The throat swabs, sputum culture, mid-portion urine culture of the two group were not significantly different. But the fecal culture in the experiment group was significantly lower than those of the control group (5.6% vs. 33.3%, P ＜ 0. 01); the hospital stay and overall cost of hospitalization in the experiment group was (26.0 ± 15.2)d and (78910 ± 77734)Yuan, which were significantly lower than those in the control group [(32.9 ± 22.3) d and (149528 ± 145936) Yuan, P ＜0.05]. Conclusions Appropriately bringing forward EN is safe and feasible, which can shorten clinical course and reduce the cost of hospitalization.

Objective To evaluate the safety and efficacy of direct celiac ganglion irradiation with 125I seeds for pain relief secondary to advanced pancreatic carcinoma (PC).Methods This study enrolled 23 consecutive patients who had moderate to severe pain resulting from advanced PC.All patients underwent EUS-guided direct celiac ganglion irradiation with 125I seeds.Follow-up was conducted at least once weekly until death.Blood parameters,Visual Analog Scale (VAS) score,mean analgesic consumption,and complications were evaluated during follow-up.Results All patients successfully underwent implantation at one attempt.The mean number of seeds implanted in the celiac ganglion per patient was 4 (range 2-6).Immediately after the procedure,pain relief and analgesic consumption showed no significant changes compared with preoperative values.Six patients (26％) reported pain exacerbation.Two weeks later,the VAS score and mean analgesic consumption were significantly less than preoperative values.No procedure-related deaths or major complications occurred.Conclusion EUS-guided direct celiac ganglion irradiation with 125I seeds can reduce the VAS score and analgesic drug consumption in patients with unresectable PC.

Objective To evaluate the diagnostic accuracy of contrast-enhanced harmonic EUS (CH-EUS)for pancreatic cancer.Methods Patients with pancreatic occupying lesion underwent CH-EUS with ultrasonic contrast medium Sonovue.Pathological diagnoses by EUS-FNA or surgery and the follow-up results were made as the final diagnosis to evaluate the accuracy of CH-EUS for pancreatic cancer.Character-istics of CH-EUS in different pancreatic tumors were analysed.Results A total of 76 patients were en-rolled,with an average age of 53. 1 ±14. 2.Thirty-five were finally diagnosed as having pancreatic cancer, 21 local mass-type pancreatitis,10 pancreatic neuroendocrine tumor,6 cystadenoma,4 intraductal papillary mucinous neoplasm.Tumor diameter was 3. 4 ±1. 4 cm and there were 18 less than 2 cm.The sensitivity and specificity,positive and negative predictive value of CH-EUS for pancreatic cancer was 97. 1%, 92. 9%,91. 7% and 97. 5% respectively.The sensitivity was 100% combined with FNA.Conclusion CH-EUS is safe,convenient for pancreatic cancer with high accuracy and can be used as an additional diag-nostic method to EUS-FNA.

Case-based teaching (CBT) on the basis of treatment guidelines was carried out to develop standard medical behavior, improve learning efficiency and students' ability of solving clini-cal problems. In clinical internship teaching, guidelines for common and frequently-occurring respira-tory diseases and CBT were organically combined. Cases were carefully selected and questions were meticulously set. Guidelines were thoroughly analyzed and teaching was reasonably evaluated. There-fore, students' learning interests were initiated and learning efficiency was improved. It not only trained evidence-based medicine thinking of intern students, but also improved the teaching ability of clinical teachers.

Objective To investigate the effect of depression-relieving and mind-tranquilizing acupuncture on behaviors and hippocampal neurotransmitters in rats with post-strike depression.Method Rats were randomized to normal, model, medication and acupuncture groups, 20 ratseach. A rat model of post-strike depression was made by middle cerebral artery occlusion and chronic unpredictable mild stress. The medication received an oral gavage of fluoxetine 2 mg/kg and the acupuncture group, acupuncture at points Baihui(GV20), Fengfu(GV6), Shenmen(HT7) and Taichong(LR3), 20 min retention of needles with one manipulation meanwhile, once daily, 7 days as one course of treatment, for a total of three courses with one day of rest between. Rat behaviors were observed and hippocampal neurotransmitters 5-hydroxytryptamine (5-HT), nonepinephrine (NE), acetylcholine (Ach),γ-aminobutyric acid (γ-GABA) and glutamic acid (Glu) were measured.Result The Zea Longa score was lower in the acupuncture group than in the model and medication groups at 15 and 22 days after intervention (P<0.01,P<0.05). Sugar water consumption increased in the acupuncture group compared with the model and medication groups at 7, 15 and 22 days after intervention (P<0.01). Sugar water consumption, open-box horizontal movement and vertical movement increasedin the medication and acupuncture groups at 7, 15 and 22 days after intervention compare with before intervention (P<0.01,P<0.05). Hippocampal 5-HT, NE, Ach,γ-GABA and Glu contents were significantly lower in the model group of rats than in the normal group (P<0.01) and were significantly higher in the acupuncture group of rats than in the model group (P<0.01,P<0.05).Conclusion Depression-relieving and mind-tranquilizing acupuncture can markedly improve behaviors in rats with post-strike depression. Its mechanism may be related to regulating rat neurotransmitters 5-HT, NE, Ach,γ-GABA and Glu expressions.

Objective To investigate the changes and significance of autophagy in rats with experimental acute necrosis pancreatitis (ANP).Methods According to method of random number,18 rats were randomly divided into control group,ANP group,ANP+rapamycin (RAP) group.The ANP rat model was established by intraperitoneal injection of 20％ L-arginine.The rats of ANP+RAP group were intraperitoneal injected with RAP 1.2 mg/kg at 30 minutes before modeling.The rats of control group were intraperitoneal injected with 0.9％ NaCl solution.The blood was drawed from the hearts nine hours after modeling for subsequent experiments.Serum levels of trypsinogen activation peptide (TAP),interleukin (IL-1),IL-6 and tumor necrosis factor (TNF) α were measured with enzyme-linked immunosorbent assay.The pancreatic tissues were pathologically scored.Autophagy-related structures in rat pancreatic acinar cells were observed by transmition electron microscopy.The expression of autophagy marker microtuble assciated protein 1 light chain 3 (LC3)-Ⅱ and Beclin-1 at mRNA and protein level were measured by quantitative real-time polymerase chain reaction (qRT-PCR),Western bloting and immunohistochemistry.The single factor analysis of variance was used for mean comparison among groups.Results A rat model of ANP was successfully established.Histopathological score of pancreas acinar cell necrosis of ANP+RAP group (2.19±1.38) was higher than that of ANP group (0.97±0.68),and the difference was statistically significant(F=33.75,P＜0.05).The results of Western blotting indicated that the protein expression of LC3-Ⅱ and Beclin-1 in ANP group (35.25±2.68 and 49.40±5.28)were higher than those in control group (1.54±0.16 and 0.78±0.06),furthermore the expressions in ANP+RAP group(123.53±3.21 and 76.41±3.80) were higher than those in ANP group,and the differences were statistically significant(F=2 045.54,326.87,both P＜0.01).Immunohistochemistry results also indicated that the LC3Ⅱ and Beclin-1 expression at protein level of ANP+RAP group (7 570.63±4 357.67 and 3 418.09±2 035.78) were higher than those of ANP group (1 926.53±1 414.44 and 536.11±403.10),and the differences were statistically significant (F=39.83,41.58,both P＜0.01).The expression of Beclin-1 at mRNA level of ANP group (107.12±29.10) was statistically higher than that of control group(7.01 ±3.39),and the difference was statistically significant (F=3.61,P＜0.05),but the expression of ANP+RAP group (97.63 ± 65.38)was no significant difference compared with ANP group.However,the expression of LC3-Ⅱ at mRNA level of ANP+ RAP group (4.37 ± 1.67) was statistically higher than that of ANP group (1.76 ± 1.59),and the difference was statistically significant(F=16.10,P＜0.05),but the expression of ANP group was no significant difference compared with control group (1.51 ±0.95).The result of electron microscopy showed that autophagy related structures increased in ANP group compared with that of control group,which of ANP+RAP group was more.The serum levels of TAP,IL-1 and IL-6 of ANP + RAP group were (36.47 ± 1.71) pmol/L,(122.88± 26.67) pg/mL and (107.39±13.95) pg/mL,which were all higher than those of ANP group ((25.63 ± 6.05) pmol/L,(98.06 ±9.29) pg/mL and (86.16± 7.20) pg/mL),and the differences were statistically significant (F=116.71,50.45,79.67; all P＜0.01).There was no significant difference in TNFα between ANP+ RAP group ((140.80±60.82) pg/mL) and ANP group ((105.23±6.95) pg/mL,F=14.76,P＞0.05).Conclusions Autophagy increased in rats with ANP.Promoting autophagy could significantly activate trypsinogen,aggravate pancreatic injury and increase inflammation reaction,which indicated that autophagy might involve in the pathogenesis of ANP through trypsinogen activation.

ObjectiveTo evaluate the accuracy of contrast-enhanced harmonic EUS (CEH-EUS) by using a second-generation contrast medium in differential diagnosis of pancreatic occupying lesions.MethodsPatients with suspected pancreatic neoplasms or chronic pancreatitis were enrolled and underwent CEH-EUS by using ultrasonic contrast medium Sonovue.Cytological and/or histological diagnoses were made by EUS-FNA and the final follow-up results.Characteristics of enhancement of the target areas,such as enhancement sequence,time features,pattern grade and venous elution degree were investigated.ResultsA total of 23 patients were enrolled,in which 13 were diagnosed with FNA as having pancreatic cancer,7 with chronic pancreatitis,2 with intraductal papillary mucinous neoplasms and 1 with microcystic serous cystadenoma.The accuracy of CEH-EUS was 95.65％,which was significantly higher than that of conventional EUS (78.2％).Enhancement of pancreatic cancer by CEH-EUS was later than or simultaneous with the nearby tissues,with heterogeneous low enhancement or fulfillment defect areas,and early subsidence without obvious peak.Enhancement of benign pancreatic diseases was simultaneous with the surrounding tissues,with homogenous fulfillment and simultaneous subsidence.ConclusionCEH-EUS is safe,convenient and accurate in diagnosis of pancreatic occupying lesions and can be used as an additional diagnostic method to EUSFNA.

Objective:This study aimed to achieve the early diagnosis and active treatment of adult hemophagocytic syndrome (HPS) and investigate the clinical characteristics and prognostic factors of this syndrome. Methods:A single-center retrospective analysis was performed to analyze clinical characteristics, laboratory findings, and survival data. Results:In 58 patients, the most common clinical manifestations were fever (100%) and splenomegaly (89.7%). The most common laboratory parameters were serum ferritin 500 g/L (100%) and peripheral cytopenia in two or more lineages (96.6%). platelet count, fibrinogen, and lactate dehydrogenase in the death group were significantly lower than in the survival group (P=0.000, 0.001, and 0.000). Survival analysis results showed that infections in the rheu-matological group exhibited good prognosis [the overall survival (OS) time was not reached in 190 d]. Patients with unexplained causes had moderate prognosis (OS time was 60 d);tumor-associated HPS patients had poor prognosis (the OS time was only 30 d). Univariate analysis results showed that patients with Fbg<1.5 g/L, PLT<40×109/L, and LDH≥2000 U/L also exhibited poor prognosis (P=0.000). Multivariate analysis results showed that PLT<40 × 109/L was an independent adverse factor (HR=6.472, 95%CI:1.526-26.065, P=0.011). Conclusion:HPS exhibits complex clinical manifestations and varied etiology. Patients with infection and rheumatism-related HPS had good prognosiss compared with those manifesting tumor-associated HPS. Fbg<1.5 g/L, PLT<40×109/L, and LDH≥2 000 U/L were the univariate factors that affected the survival time of patients. PLT<40×109/L is an independent adverse factor. These patients need systemic treatments as early as possible.