Objective To identify the features of colon electricity activities and the motion in viscerally hypersensitive rats. Methods The rats were divided into control group and model group that was latter sensitized by chicken egg albumen.After two weeks, the colon spike potential, slow wave and the colon contraction were recorded. The interdigestive myoelectric complex cycle,the duration of phase Ⅲ,spike potential and slow wave propagation rate and average largest amplitude were observed,and then the number of the contraction, the index of contraction were recorded. Results Both IMC cycle and phase Ⅲ were prolonged, spike potential propagation frequency speeded up (P

Objective Effect of provenance on seed biological characteristics and seedling growth in Glycyrrhiza uralensis was studied to indicate the important role of provenance in standardization production of traditional Chinese medicinal materials.Methods Indexes such as 1 000-seed weight,water content,seed capsule penetration,germination percentage,and germination potency of the seeds from various resources were determined by general ways.Growth indexes of young seedling and one-year seedling were determined.Results Between Shanghaimiao provenance and Bayinwusu provenance,1 000-seed weight of G.uralensis in Shanghaimiao was bigger,which was 12.3 mg for the former and 11.7 mg for the latter;water penetration of seed capsule was stronger in Bayinwusu and conductance rate was twice as much as it in Shanghaimiao.Shanghaimiao seed bearing storage and seed vigor were stronger and hard seed rate was higher.Germination percentage and germination potency of untreated seed in Bayinwusu was higher than that of Shanghaimiao,but lower after treatment.Germination percentage and germination potency of smaller seeds was the highest between the two different provenances in both the untreated and treated seeds.In growth indexes of two provenances,young seedling got a significant and the most significant difference.Growth index in Shanghaimiao was higher a little,which didn't get to an obvious level.Conclusion The provenances have an effect on physical characteristics,seed capsule penetration,and germination properties;provenance and seed size have an obvious effect on young seedling growth but have not any effect on one-year seedling growth and biomass.

BACKGROUND:Autologous bone graft is the best method to repair bone defects after tumor curettage, but its shortcomings are as folows: increased surgical trauma, sequelae at bone graft site such as infection and pain, and a limited amount of autologous bone. OBJECTIVE:To analyze the effectiveness of xenograft and calcium sulphate artificial bone in treating bone defects after benign bone tumor removed. METHODS:Totaly 26 cases of benign bone tumor were selected, including 8 cases of giant celltumor, 5 of enchondroma, 4 of fibrous histiocytoma, 3 of bone fibrous dysplasia, 2 of non-ossifying fibroma, 2 cases of bone cysts, 1 of aneurysmal bone cyst and 1 of aneurysmal bone cyst and 1 case of chondroblastoma. Of the 26 cases, 12 cases underwent calcium sulphate pelets alone to fil bone defects after benign bone tumor removed, 6 cases were subjected to xenograft alone, and 8 cases were treated with calcium sulphate pelets combined with xenograft. The X-rays were taken at 1 week, 3 months, and 1 year after the operation in al patients to assess the bone healing process. RESULTS AND CONCLUSION:Al the patients were folowed up for 36-72 months. The absorption of calcium sulphate appeared to be absorbed earlier, the earlier absorption appearance could be observed as earlier as 1 month after the implantation, and most calcium sulphate was absolved and replaced by new bone at 3 months after the operation. The xenograft bone was degraded at 3 months post implantation and new bone formed. Osseo integration of the graft was observed at the periphery of the implant at 6 months post implantation. One year post implantation, trabecular bone was observed at the site with uniform bone density. In the combined group, thecalcium sulphate pelets were absorbed earlier and new bone formed earlier than the calcium sulphate alone group, and the xenograft absorbed later than the calcium sulphate pelets. Generaly, bony union was detectable 1 year after operation. These findings indicate that xenograft and calcium sulphate in treating benign bone tumor have acquired good results, which can be used as a substitute of autologous bone.

Objective:To evaluate the accuracy and feasibility of sentinel lymph node biopsy (SLNB) marked by 99Tcm-IT-Ritux-imab and to discuss the clinical value of the method in diagnosis and treatment of cutaneous melanoma. Methods:A total of 67 patients with cutaneous malignant melanoma received 99Tcm-IT-Rituximab-tagged SLNB from March 2008 to March 2012. Lymphoscintigra-phy was conducted 30 min to 1 h after intra-dermal injection of 99Tcm-IT-Rituximab. Subsequently, the surgery of SLNB was carried out using gamma probe. The detection and positive rates of SLNB were counted. The relationship between the status and the clinical features of the sentinel lymph node (SLN) was analyzed, such as the T stage, ulceration, age, gender, and location. The influence of SLN status on overall survival (OS) and disease-free survival (DFS) was evaluated. Results:SLNs were detected in all the 67 patients by SPECT and gamma detector, with detection rate of 100%. Fifteen patients had SLN metastasis, and the positive rate was 22.4%. Chi-square indicates that SLN metastasis is associated with age, T stage, and ulceration (P<0.05). A total of 63 patients were followed up for 24-69 months, and the median follow up time was 43 months. Kaplan-Meier survival analysis shows that both OS and DFS in the SLN-negative group are better than those in the SLN-positive group (OS:93.9%vs. 57.1%, P<0.01;DFS:79.6%versus 28.6%, P<0.01). Cox-regression multiple factors analysis suggests that both SLN status and T stage are independent factors that affect the DFS of malignant melanoma. Conclusion:SLNB assisted by 99Tcm-IT-Rituximab can well reflect the state of lymph node metastasis and is es-sential for accurate staging, prognosis judging, and treatment guiding. Its operation procedure is simple with high accuracy, and the im-aging status is stable. Therefore, it is convenient and feasible as a means of SLNB.

Objective To analyze the difference of salivary microbiome between the patients with functional dyspepsia and healthy controls.Methods Saliva samples were collected from the patients with functional dyspepsia and healthy control.Genomic DNA of the samples was extracted,and the high-throughput sequencing technology was used to conduct DNA sequence of 16S rRNA-V4 region.Subsequently,all the data were performed by the bioinformatic analysis.Results The salivary microbiome in the functional dyspepsia group was dominated by Proteobacteria,while Bacteroidetes was the top microbiota in the heathy control group.In the functional dyspepsia group,the Chao1 index,ACE index,Shannon index and Simpson index were 1 295,1 351,4.93 and 0.90 respectively.In the healthy control group,the above indexes were 1 001,1 351,5.28 and 0.92 respectively.The PCoA ba sically separated the microbiome composition of the two groups.Sixteen kinds of microbiota were significantly different between two groups using linear discriminant analysis effect size tool,including Bacteroidetes,Prevotella,Prevotellaceae,Neisseria,Betaproteobacteria and Proteobacteria,etc.Conclusion Saliva in the patients with functional dyspesia has characteristic microbiome composition,which is dominated by Proteobacteria,but the richness and diversity between the two groups have no difference.Neisseria is one of the significantly different bacteria between the two groups.

Objective To study adhesion and invasion of adherent-invasive Escherichia coli strains and its ability of survival and proliferation in macrophage cells.Methods Bacteria from the mucosa tissues of ileum,colon and rectum of inflammatory bowel disease (IBD)patients were isolated,cultured and identified.The toxic genes were confirmed by polymerase chain reaction.The adhesion and invasion ability of bacteria and its survival and proliferation ability in macrophage cells were observed after co-culture with cells.Results Five adherent-invasive Escherichia coli strains were isolated from the intestinal mucosa specimens of two patients with Crohn′s disease and one patient with ulcerative colitis.The adhesion rates of five bacteria stains (2A,2B,15A,15B,19B)to Caco-2 cells were (1 .4 ± 1 .3 )%,(1 .5 ± 0.6 )%, (0.6±0.1)%,(1 .4±0.4)% and (1 .1 ±0.8)%,respectively.The adhesion rates to Int-407 cells were (1 .0±0.8)%,(1 .5 ±0.8)%,(1 .0 ±0.8 )%,(1 .0 ±0.8 )% and (0.3 ±0.0 )%,respectively.The invasion rates to Hep-2 cells were (10.1 ±7.0)%,(0.7 ±0.4)%,(0.4 ±0.3 )%,(2.2 ±1 .0)% and (2.1 ±1 .8)%,respectively.The invasion rates to Int-407 cells were (0.7 ±0.5 )%,(0.5 ±0.3 )%, (2.8±1 .2 )%,(0.7 ±0.5 )% and (0.5 ±0.4)%,respectively.All five adherent-invasive Escherichia coli strains could survive and proliferate in macrophage cells.Conclusions Five adherent-invasive Escherichia coli strains are isolated for the first time in Chinese patients with IBD,and all of them could survive and proliferate in macrophage cells.

Objective:To explore the outcome of soft tissue sarcoma (STS) on patients with soft tissue metastasis. Methods:We ana-lyzed 25 STS patients with soft tissue metastasis primarily localized on extremity and trunk. The study was conducted from June 2010 to June 2016 by retrospective analysis of the clinical and pathological characteristics of the patients. The assessed endpoints were overall survival. Results:Six patients (24%) had synchronous soft tissue metastasis, and 19 patients (76%) had metachronous metasta-sis. The average time for primary tumor recession of metastatic lesions was 45.3 months. Metastases were most common in parts of the trunk in 18 patients (72%), followed by the head and neck in 5 patients (20%). Eleven patients (44%) with lung metastasis had poor prognosis. Conclusion:STS occurred more rarely in soft tissue metastasis than in pulmonary metastasis. Neoadjuvant chemotherapy and surgical treatment were the major therapies employed. Targeted therapy as a new treatment rendered good results.

Objective:To analyze the clinical prognostic factors of liposarcoma on the extremities and trunk, as well as to retrospectively analyze the effect of adjuvant radiotherapy and chemotherapy on liposarcoma of the extremities. Methods:Patients with liposarcoma of the extremities treated in our hospital from July 1, 2007 to December 31, 2012 were followed up. The relationship of clinical prognostic factors with gender, age, location, depth, and size of the tumors, as well as the histological grade and admission status, were statistically analyzed. The effects of adjuvant radiotherapy or chemotherapy on overall survival (OS) and disease free survival (DFS) were evaluated. Results:A total of 82 patients with extremity liposarcoma received surgery-based comprehensive treatment in our hospital. Of the total patients, 73 received a 24-month to 88-month satisfied follow-up;the median follow-up time was 47 months. The OS rate was 83.6%(61/73), and the DFS rate was 68.5%(50/73). Multivariate Cox regression analysis showed that the tumor location, histological grade, and admission status were the independent correlative factors influencing DFS, and the age and pathologic grading were the independent correlative factors influencing the OS. Kaplan-Meier survival analysis showed that radiation therapy can significantly improve the DFS and OS of the G2 and G3-grade liposarcoma (DFS:59.1 months vs. 28.4 months, P<0.01;OS:70.8 months vs. 55.1 months, P<0.05). Significant difference was not found in the effect of chemotherapy on OS and DFS. Conclusion:The prognosis of liposarcoma was significantly associated with the pathologic grades and subtypes. Auxiliary radiotherapy could improve the survival and prognosis of G2 and G3 liposarcoma of the extremities, but the role of chemotherapy in treating liposarcoma remained unclear.

OBJECTlVE To investigate the antidepressant effect and reIated mechanism of the totaI fIavonoids extract parts( Iicorice fIavonoids,LF)from Glycyrrhiza uralensisFisch. cuItivated IocaIIy in Ningxia. METHODS Forced swimming test( FST)and taiI suspension test( TST)were adopted to study the antidepressant pharmacoIogicaI effect in the acute stress-induced depression modeI in mice. The Km mice were intragastricaIIy administered with LF(5,30 and 180 mg·kg-1 )once daiIy,for 21 con-secutive days. One hour after the first,seventh and Iast administrations,the mice were submitted to FST by recording the immobiIity period within the Iast 4 min of the totaI 6 min in both tests and the resuIts were expressed as decrease in immobiIity period with respect to vehicIe controI. In TST,the other group of Km mice was used to evaIuate the antidepressant effect in same protocoI. In the antagonism of reserpine-induced symptoms test( ART),ICR mice were administered intragastricaIIy with LF( 50,150 and 400 mg·kg-1 )once daiIy for 7 consecutive days. One hour after the Iast administration,the mice received reserpine(4 mg·kg-1 ,ip),and ptosis or akinesia was measured 1 h after reserpine injection whiIe rectaI temperature was measured 4 h after the reserpine injection respectiveIy. The same protocoI was adopted in yohimbine toxicity potentiation test(YTT)as in ART. Thirty minutes fter the Iast adminis-tration,the mice received the threshoId IethaI dosage of yohimbine(30 mg·kg-1 ,sc)respectiveIy,and the death number of the mice was caIcuIated in 24 h after the yohimbine administration. In the 5-hydroxy-L-tryptophan(5-HTP)induced head-twitches test(HTT)in mice,after being administered intragastricaIIy with LF(50,150 and 400 mg·kg-1 )once daiIy for 7 consecutive days,the mice received pargiIine (100 mg·kg-1 ,ip)the next day,and 30 min Iater,5-HTP(10 mg·kg-1 ,ip)was intraperitoneaIIy injec-ted to induced the head twitch respectiveIy,and the times of head twitch in a 30 min period after 5-HTP treatment were observed at 6 time points. After HTT,the mice were sacrificed quickIy,and the mono-amine oxidase(mAO)activity in the brain cortex,hippocampus and thaIamus was examined to evaIuate the antidepressant effect of fIavonoids with mAO inhibition. RESULTS Compared with the vehicIe controI,LF significantIy decreased the immobiIity period in both FST and TST(P﹤0.05). LF(50,150 and 400 mg·kg-1 )antagonized the ptosis and akinesia symptoms respectiveIy in 1 h after reserpine administration( P ﹤ 0. 05 ), but faiIed to antagonize hypothermia produced 4 h after reserpine administration. AIso,at the same dosage,LF did not synergeticaIIy produce the enhancement of death by subcutaneous injection of yohimbine at the threshoId IethaI dosage. LF(150 and 400 mg·kg-1 )couId significantIy and synergeticaIIy increase 5-HTP induced head-twitches response(P﹤0.05),but LF couId not promote mAO activity in the cortex,hippocampus and thaIamus at the same dosage. CONCLUSlON LF exerts antidepressant-Iike effect on the modeI of acute despair test. The mechanism might be reIated to direct enhancement of the serotonergic neuraI function in the brain.

Objective To construct the LyP-1 targeted MR fluorescence dual-modality molecular probe for pancreatic cancer,and to observe its features and MRI charicteristics.Methods The 50 nm MR-fluorescent dual-modality molecular probe with surface modified with cyclic nine-amino acid peptide LyP-1 (Cys-Gly-Asn-Lys-Arg-Thr-Arg-Gly Cys) was rationally designed.Whether the molecular probe could specifically recognize the pancreatic cancer cells were validated by the combination of fluorescent imaging and MR T2WI.Results The new MR-fluorescent dual-modality molecular probe anchored with LyP-1 could be used for the fluorescent imaging and MR T2WI of pancreatic cancer in mouse.And the molecular probe was demonstrated to be effective in conjugating with pancreatic cancer cells on fluorescent images and caused obvious MR signal reduction under T2 relaxometry in vitro.In vivo experiment,the molecular probe could be used for fluorescent labeling tumor tissue and detecting orthotopic pancreatic cancer in C57BL/6 mouse as MR contrast agent.Conclusion The LyP1 immobilized MR-fluorescent dual-modality molecular probe can actively target to mouse orthotopic xenograft of pancreatic cancer,which is hopeful to the application in early probing and diagnosis of pancreatic cancer by multimodal imaging.