With the development of capsule endoscopy, developing active capsule endoscopy robot becomes a growing trend. Although stomach diagnosis with robot has been put into clinical test, the realization of the complete intestinal capsule endoscopy is still a difficulty. This paper reports the status quo of the research process for intestinal capsule endoscopy robot, and analyzes their advantages, defects and prospects for development, which provides reference for the research of intestinal capsule endoscopy robot.
Capsule Endoscopy ; instrumentation ; Humans ; Intestines ; Robotics ; trends

Objective To analyze diagnostic classification and karyotype characteristics of patients with myelodysplastic syndrome(MDS)in Xinjiang Uygur Autonomous Region.Methods 149 patients with MDS were retrospective observed.The features of clinical,laboratory examination,morphologic and cytogenetics were analyzed from patients classified by the 2008 WHO classification.The rates of survival and leukemia conversion in different subgroups,the differences between uygur and han nationalities,and the rates of abnormal karyotypes in different subgroups were compared.Results Among 149 cases,there were 28 cases of RCUD(including 25 RA and 3 RN),8 cases of RARS,32 cases of RCMD,30 cases of RAEB-Ⅰ,44 cases of RAEB-1,5 cases of MDS-U and 2 cases of 5q-.There was no difference between uygur and han nationality of diagnostic classification(x2=3.627,P=0.822).The overall survival time and AML conversion rates were different among subtype groups.Karyotype abnormalities were found in 74 cases(49.7 ％),which showed no difference between uygur and han nationalities.The distribution of karyotype were normal karyotype(72 cases),complex karyotype(34 cases),+8(14 cases),-7(11 cases),+11(7 cases),20q-(5cases),-Y(2 cases),+21(2 cases)and 5q-(2 cases),which were no differences between uygur and ban nationality(X2=10.015,P=0.264).When comparing abnormal karyotype rates in different diagnostic classification subgroups excepting 5q-,RAEB-Ⅰ and RAEB-Ⅱ subtype were higher than that of RCUD subtype(X2=7.034,P=0.008;X2=6.395,P=0.016).Conclusions According to the 2008 WHO classification,the incidence of abnormal karyotype,survival time and AML conversion rates are different among subtype groups.There are no regional and ethnical differences in distribution of diagnostic classification and karyotype in patients with MDS in Xinjiang Uygur Autonomous Region.

Objective To observe the effects of functional electrical stimulation (FES) based on a normal walking pattern on the lower extremity function of subjects early after cerebral infarction.Methods Twenty patients with cerebral infarction aged (59.7 ± 10.1) years (range 45-80) who were hospitalized and within 3 months (31.1 ± 19.3 days) after the onset were randomly assigned to an FES group (n =11) or a placebo stimulation group (n =9).All subjects in both groups received standard medical and rehabilitation treatment.In addition,the FES group received FES and the placebo group received sham-FES without current output.The daily stimulation and shamstimulation sessions lasted for 30 min,5 d/week for 3 weeks.All of the subjects in the two groups were assessed using the Fugl-Meyer assessment (FMA),postural assessment for stroke patients (PASS),the Berg balance scale (BBS),functional ambulation categories (FACs) and the modified Barthel index (MBI).Results After 3 weeks of treatment,FMA,PASS,BBS and MBI scores had all improved significantly compared with before treatment in both groups,but the FES group showed significantly better improvement.After treatment the average FAC results of both groups had improved,and there was no significant difference between the two groups.At the same time,the research revealed the expected significant correlations among the FMA,PASS,BBS and MBI results.Conclusion FES based on a normal walking pattern can improve lower extremity motor function early after cerebral infarction,improve balance,and improve ability in the activities of daily living.

Objective:To investigate whether elderly patients over 70 years of age with gastric stump carcinoma should be treated with operation and which surgical approaches should be selected.Methods:A retrospective analysis was performed on 36 patients with gastric stump carcinoma without any significant surgical contraindications hospitalized in lanzhou general hospital of lanzhou military area from January 2001 to January 2013.All these patients were over 70 years of age,with an active score of 0-3.The patients were divided into surgical and non-surgical treatment groups,and the surgical treatment group was further subdivided into radical surgery group and palliative surgery group.The treatment modalities,complications and survival of each group were analyzed.Results:A one-year and a three-year survival rate of surgical treatment group was 45.5％ and 22.7％,respectively,whereas the one-year and three-year survival rate of non-surgical treatment group was only 18.2％ and 0％,the difference was statistically significant (P ＜ 0.05).In the surgical treatment group,the radical surgery subgroup had a better survival rate than palliative surgery subgroup,with a one-year and a three-year survival rate of 58.3％ and 33.3％ respectively for the former,and 30％ and 10％ for the latter.The incidence of complications of radical surgery group and palliative surgery group was of no significant difference (P ＞ 0.05).Conclusions:Elderly patients over 70 years of age with gastric stump carcinoma can still benefit from radical surgery;while palliative surgery does not improve the survival rate of the patients,radical surgery is appropriate for elderly patients with gastric stump carcinoma.

Recent studies demonstrate that the long non-coding RNAs (lncRNAs), pseudogenes, circular RNAs (circRNAs) and so on can be used as competitive endogenous RNAs (ceRNAs), binding to microRNAs (miRNAs), to regulate the expression level of their targets.This novel interplay optimizes traditional liner miRNA→RNA pattern and has become a research hotspot in the scientific community.Dysregulation of ceRNA interplay will influence the body′s normal life activities, leading to the occurrence of diseases, and even tumor formation.This article briefly introduces the key components of ceRNA crosstalk and its research progress in gastric cancer pathogenesis, so as to provide a new thought for cancer research, clinical diagnosis and therapeutics.

Objectives To explore the intrinsic factors related to the pathogenesis of acute arterial thrombosis (AAT) and to elucidate the patho-genesis of AAT on the basis of differentially expressed genes. Methods Patients with acute myocardial infarction (AMI), stable angina (SA) and healthy controls (n=20 per group) were recruited, and the whole human genome microarray analysis was performed to detect the dif-ferentially expressed genes among these subjects. Results Patients with AMI had disease-specific gene expression pattern. Biological func-tional analysis showed the function of T cells was significantly reduced, the mitochondrial metabolism significantly decreased, the ion me-tabolism was abnormal, the cell apoptosis and inflammatory reaction increased, the phagocytosis elevated, the neutrophil-mediated immunity increased and the post-traumatic repair of cells and tissues increased in AMI patients. The biological function in SA group and healthy con-trols remained stable and was comparable. Conclusions The reduced function of T cell gene models in AAT showed the dysfunction of the immune system. The pathogenesis of AAT may be related to the inflammatory reaction after arterial intima infection caused by potential pathogenic microorganisms.

Objective To investigate the tumor-inhibitory effect of cytokine-induced killer cells(CIK)co-cul-tured with dendritic cells (DC)pulsed by breast cancer stem cell antigen on the same tumor-bearing mice. Methods Breast cancer stem cells were isolated from the cell line of MCF-7/ADR and extract lyses antigen of the stem cell was saved. DC and CIK derived from peripheral blood mononuclear cells of healthy individuals were co-cultured and pulsed or un-pulsed by the above antigen lyses. This DC+CIK were injected to breast tumorbearing mice (BCSC-AP-DC+CIK group), and were used to compared with the common breast cancer cell antigen (rather than breast cancer stem cell antigen) pulsed DC+CIK group(AP-DC+CIK group), DC+CIK group, CIK CIK group and normal saline group(NS group). The tumor-inhibitory effect were evaluated and compared among all 5 groups through the tumor size, TdT-mediated dUTP nick end labeling test (TUNEL), examining expression level of bcl-2 and bax by immunohistochemistry. Results The tumor size in each group before and after therapy and the tumor size after therapy between each group was of significant difference(P＜0.05). The maximum size is NS group(3.625±0.093)cm3 and BCSC-AP-DC+CIK group is minimum,which is (1.234±0.131)cm3. BC-SC-AP-DC+CIK group is of highest expression of bax and apoptotic index value, lowest bcl-2 expression in all 5 groups. Conclusion The CIK co-cultured with DC pulsed breast cancer stem cell antigen was more effective to induce apoptosis of breast cancer cells than those of CIK cells co-cultured with DC pulsed breast cancer cell antigen,CIK cells co-cultured with DC and CIK cells.

Objective To evaluate the role of c-Jun N-terminal kinase (JNK) in lipopolysaccharide (LPS)-induced acute lung injury ( ALI) in rats.Methods Eighty male SD rats weighing 250-300 g were randomly divided into 4 groups ( n = 20 each) : control group (group C) ; ALI group; LPS + SP600125 (JNK inhibitor)group (group S) and LPS+ DMSO (the solvent) group (group DMSO) . ALI was induced by intravenous LPS 5mg/kg. In S and DMSO groups, SP600125 30 mg/kg and DMSO 0.2 ml were injected intravenously after LPS administration respectively. Ten animals were sacrificed by exsanguinafions at 4 h after LPS administration in each group. The broncho-alveolar lavage fluid (BALF) was colleted. The TNF-α and IL-1β concentrations in BALF were measured. The lungs were removed for microscopic examination and determination of W/D lung weight ratio. The other 10 animals in each group were observed for 48 h survival rate. Results Intravenous LPS significantly increased TNF-α and IL-1β concentrations in BALF and W/D lung weight ratio, decreased 48 h survival rate and induced histologic damage. Intravenous SP600125 30 mg/kg significantly attenuated the above-mentioned LPS-induced changes. Conclusion Activation of JNK is involved in the development of endotoxin-induced ALI in rats.

Objective To assess the characteristics and satisfaction of outpatients in walk-in clinic of a grade A tertiary hospital.Methods A total of 1 100 outpatients visiting walk-in clinic of the Second Hospital of Hebei Medical University during March 2016 and June 2016 were randomly selected for the questionnaire survey.The self-designed questionnaire included the general information of patients,the satisfaction degree to the walk-in clinic,to special clinics of the hospital or to community clinics and related reasons,and suggestions for further improvement.Results Total 947 valid questionnaires were received with a retrieval rate of 86.09％.Most of participants had one chronic disease (594,62.72％).The satisfaction degree of walk-in clinic (1.78) was higher than that of hospital special clinics (1.93) (P =0.010),in turn the latter(2.33)was higher than that of conmmnity clinics (P ＜ 0.001).The reasons for patient to choose the walk-in clinic were wide range of medications (389,41.08％),reliable quality (285,27.98％),short waiting time (249,26.29％) and so on.Suggestions for improvement of the walk-in clinic were further reducing the waiting time (428,45.20％),need specialists for chronic disease management (210,22.18％),raising reimbursement rate (172,18.16％) and so on.The reasons for patients to choose special clinic were need readjusting prescription (587,61.99％),special disease or drug (427,45.09％).The reasons of dissatisfaction with special clinic were long waiting time (476,50.26％),frequent transfer to multiple departments (221,23.34％),high registration fee (221,23.34％).The reasons for patients to choose community clinic were short distance (350,36.96％),better environment (350,36.96％),short waiting time (184,19.43％).The reason of dissatisfaction with community clinic were low qualification of medical staff (405,42.77％),insufficient medications (392,42.39％);distrusting the quality of drugs (263,27.77％).Suggestions for improvement of the community clinics were upgrading the qualification of medical staff (317,33.47％),enlarging drug variety (298,31.47％),improving medical environment (94,9.93％) and so on.Conclusion Most outpatients visiting walk-in clinic of grade A tertiary hospital are highly satisfied the clinic.To meet the patients' needs the primary medical unit should further improve their overall service.

Objective:To investigate the changes of expression levels of TLR9 and IL-6 in the periodontal tissue during the experimental tooth movement of the rats, and the effecst of the MT01 on the expression of TLR9,TRAF6 and IL-6 in periodontal tissue,and to clarify its related mechanisms.Methods:Thirty Wistar rats were randomly divided into MT01 intervention group(n=6) and non-MT01 group(n=24).Force of 0.49 N was applied to move the upper first molars mesially. The rats in Non-MT01 intervention group were sacrificed on the days 3,7,14 and 21, and the rats in MT01 intervention group were all sacrificed on the day 7. RT-qPCR was used to detect the expression levels of TLR9,TRAF6 and IL-6 mRNA in maxillary first molar alveolar bone in each group.Results:The expression levels of IL-6 and TLR9 mRNA in loaded side were higher than those in control side(P<0.05), and reached the maximum levels on the day 7(P<0.01);with the interpose of MT01, the expression levels of TLR9 and TRAF6 mRNA were lower than control side(P<0.01).Conclusion: MT01 could down-regulate the expression levels of TLR9 and TRAF6 during orthodontic tooth movement and eventually resists the inflammation during the tooth movement.