Objective To examine the circulating glucose and body weight in the transgenic MKR mouse model who expressed dominant-negative IGF-1 receptor and insulin receptor in skeletal muscle leading to systemic insulin resistance and diabetes. Methods MKR mice were genotyped by PCR analysis of tail DNA.And in these mice we examined the circulating glucose and body weight once a week from 1 to 16 weeks of age, and the circulating insulin and glucose tolerance at age of two-month-old by using C57 mice as controls. Results The descendents of MKR mice kept hereditary feature. And these mice had hyperglycaemia from 3 weeks of age,and an increasing body weight slowly(P<0.01).Twenty-fold significant hyperinsulinemia was observed in MKR mice,and they were glucose intolerant in 2-month-old male and female (P<0.01).Conclusions The MKR mouse is an excellent model of type 2 diabetes

Objective To develop an MR optical dual-modality probe targeting angiogenesis of gastric cancer and to study its physical characteristics , in vitro cytotoxicity and magnetic effects of different pulse sequences on 3 T clinical MR scanner.Methods We conjugated GX1-Cy5.5, a novel gastric cancer neo-vasculature targeted peptide labeled with Cy 5.5, to the surface functionalized magnetic nanoparticles according to different molecular weights (1∶100, 1∶500),resulting in dual-modality probe DPs100 and DPs500 (named DPs).The hydrodynamic size and zeta potential of DPs and DPs 500 were analyzed by nano-ZS.The human umbilical vein endothelial cells (HUVECs) and BGC-823 cells were treated with DPs for 24 h, and methyl thiazol tetrazolium ( MTT) method was used to detect the survival rate of cells.DPs with different concentrations were scanned on different MR sequences , and then the relative signal intensity was observed.The absorbance of HUVECs and BGC823 cells treated with DPs of different concentration (0.00, 1.25, 2.50, 15.00, 50.00, 100.00 and 150.00 μg/ml) were compared with single factor analysis of variance.Relative signal intensity of different MR sequences was compared using a paired Wilcoxon signed-rank test.Results The dual-modality probe targeting angiogenesis of gastric cancer was successfully constructed.The hydrodynamic size of iron oxide nanoparticles , DPs100 and DPs500 was (35.23 ±0.07), (39.49 ±0.16) and (40.43 ±1.70) nm and the Zeta potential was (0.31 ±0.20), ( -4.15 ±0.79) and ( -10.51 ± 2.37) mV.The coupled rates of DPs 100 and DPs500 with polypeptide were 92%and 94% respectively.The absorbance of HUVECs and BGC823 cells treated with DPs of different concentrations were 0.76 ±0.04, 0.80 ±0.03, 0.79 ±0.05, 0.75 ±0.06, 0.74 ±0.05, 0.77 ±0.01,0.71 ±0.04 and 0.38 ±0.04, 0.43 ±0.04, 0.41 ±0.03, 0.43 ±0.07, 0.44 ±0.04, 0.41 ±0.07 and 0.40 ±0.04, there was no statistical significance ( F=0.94, 0.51;P>0.05).The signal intensity increased first and then decreased following the increasing concentrations of DPs on T 1WI,especially on FSPGR T1WI (Z =-3.294,P <0.05), while the signal intensity decreased on T2WI or T2*WI.There was no significant differences in signal intensity on FSE T2 WI and SSFSE T2*WI with iron concentration >10μg/ml( Z=-7.110,P>0.05).With iron concentration≤10 μg/ml,the signal intensity on SSFSE T 2*WI was significantly decreased compared to FSE T2 WI ( Z =-2.023, P <0.05 ) .Conclusions DPs may be potential dual-modal probes for characterization of tumor angiogenesis by MR and optical imaging noninvasively , without causing significant effects on the cell activity in vitro , and SSFSE T2*WI may be the most sensitive sequence for DPs evaluation on MR.

Beh?et′s syndrome is a kind of chronic systemic vasculitis with involvement of multiple organs. Intestinal involvement of Beh?et′s syndrome is presently named as intestinal Beh?et′s syndrome. Recently, there is considering another kind of disease type with only typical intestinal ulcers. Since it is difficult to differentiate intestinal Beh?et′s syndrome from Crohn′s disease, intestinal tuberculosis, intestinal lymphoma, and intestinal manifestations of many other autoimmune diseases, and there is limited evidence for the therapy of intestinal Beh?et′s syndrome, proposing diagnosis and treatment recommendations for intestinal Beh?et′s syndrome through evidence-based judgment will be of great significance for clinical practice.

Objective:To investigate the effects of biologics on psychological status and quality of life in patients with inflammatory bowel disease (IBD).Methods:A cross-sectional survey was conducted in 42 hospitals in 22 provinces (autonomous regions and municipalities directly under the central government) from September 2021 to May 2022. General clinical information and the use of biologics were obtained from adult patients diagnosed with IBD who voluntarily participated in the study. Psychological status was evaluated using the Generalized Anxiety Disorder (GAD-7), Patient Health Questionnaire-9 (PHQ-9), Pittsburgh Sleep Quality Index (PSQI), and Inflammatory Bowel Disease Questionnaire (IBDQ) assessment tools. Counts were analyzed via the Chi-square test, and datasets that were not normally distributed were analyzed via nonparametric tests. P<0.05 was considered statistically significant. Results:A total of 2 478 valid questionnaires were collected. The GAD-7 score of the biologics group was significantly lower than that of the non-use group [6 (2, 9) vs. 7 (3, 10), Z=-3.49, P<0.001]. IBDQ scores [183 (158, 204) vs. 178 (152, 198), Z=-4.11, P<0.001], intestinal symptom scores [61 (52, 67) vs. 58 (49, 65), Z=-5.41, P<0.001], systemic symptom scores [28 (24, 32) vs. 27 (23, 31), Z=-2.37, P=0.018], emotional ability scores [69 (58, 77) vs. 67 (56, 75), Z=-3.58, P<0.001] and social ability scores [26 (22, 29) vs. 25 (22, 29), Z=-2.52, P=0.012] in the biologics group were significantly higher than in the non-use group. GAD-7 scores [5 (2, 9) vs. 6 (3, 10), Z=-3.50, P<0.001] and PSQI scores [6 (4, 9) vs. 6 (4, 9), Z=-2.55, P=0.011] were significantly lower in the group using infliximab than in the group not using it. IBDQ scores were significantly higher in patients using vedolizumab than in those not using it [186 (159, 205) vs. 181 (155, 201), Z=-2.32, P=0.021] and were also significantly higher in the group treated with adalimumab than in the group not treated with adalimumab [187 (159, 209) vs. 181 (155, 201), Z=-2.16, P=0.030]. However, ustekinumab had no significant effect on any of the scores. Conclusion:The use of biologics is strongly associated with improvements in anxiety status and quality of life in IBD patients.

Behçet’s syndrome is a kind of chronic systemic vasculitis with involvement of multiple organs. Intestinal involvement of Behçet’s syndrome is presently named as intestinal Behçet’s syndrome (disease). Recently, there is considering another kind of disease type with only typical intestinal ulcers. Since it is difficult to differentiate intestinal Behçet’s syndrome from Crohn’s disease, intestinal tuberculosis, intestinal lymphoma, as well as intestinal manifestations of many other autoimmune diseases, and there is limited evidence for the therapy of intestinal Behçet’s syndrome, proposing diagnosis and treatment recommendations for intestinal Behçet’s syndrome through evidence-based judgment will be of great significance for clinical practice.

Tumor-associated macrophages (TAMs), one of the dominating constituents of tumor microenvironment, are important contributors to cancer progression and treatment resistance. Therefore, regulation of TAMs polarization from M2 phenotype towards M1 phenotype has emerged as a new strategy for tumor immunotherapy. Herein, we successfully initiated antitumor immunotherapy by inhibiting TAMs M2 polarization via autophagy intervention with polyethylene glycol-conjugated gold nanoparticles (PEG-AuNPs). PEG-AuNPs suppressed TAMs M2 polarization in both in vitro and in vivo models, elicited antitumor immunotherapy and inhibited subcutaneous tumor growth in mice. As demonstrated by the mRFP-GFP-LC3 assay and analyzing the autophagy-related proteins (LC3, beclin1 and P62), PEG-AuNPs induced autophagic flux inhibition in TAMs, which is attributed to the PEG-AuNPs induced lysosome alkalization and membrane permeabilization. Besides, TAMs were prone to polarize towards M2 phenotype following autophagy activation, whereas inhibition of autophagic flux could reduce the M2 polarization of TAMs. Our results revealed a mechanism underlying PEG-AuNPs induced antitumor immunotherapy, where PEG-AuNPs reduce TAMs M2 polarization via induction of lysosome dysfunction and autophagic flux inhibition. This study elucidated the biological effects of nanomaterials on TAMs polarization and provided insight into harnessing the intrinsic immunomodulation capacity of nanomaterials for effective cancer treatment.