BACKGROUND: Rectal cancer (RC) is a malignant tumor that seriously threatens human health. Long non-coding RNAs (lncRNAs) play a vital role in tumor regulation. Nevertheless, their exact expression features and functions remain obscure, and therefore was the aim of the current study. METHODS: We utilized the Affymetrix human GeneChip to screen differentially expressed profiles of lncRNAs and mRNAs from the cancer tissues and matched paracancer tissues of 6 RC patients. Gene Ontology (GO) and pathway enrichment analyses identified crucial functions and pathways of the aberrantly expressed mRNAs. We used quantitative real-time polymerase chain reaction to verify the significant expression differences of 11 candidate lncRNAs between the cancer and paracancer tissues. LncRNA-mRNA coexpression networks were built by calculating the Pearson correlation value to identify significant correlation pairs. Online bioinformatics tools GEPIA2, ONCOMINE, and PROGgeneV2 were used to mine the expression and prognosis of three crucial mRNAs and six verified lncRNAs. Competing endogenous RNA networks were constructed by predicting microRNA response elements and calculating free energy. RESULTS: We found 1658 differentially expressed lncRNAs (778 up-regulated and 880 down-regulated) and 1783 aberrantly expressed mRNAs (909 up-regulated and 874 down-regulated). GO and pathway enrichment analyses revealed the vital functions of the differentially expressed mRNAs, including cell proliferation, cell migration, angiogenesis, and cellular response to zinc ion. The canonical signaling pathways mainly included the interleukin-17, cell cycle, Wnt, and mineral absorption signaling pathways. Six lncRNAs including AC017002.2 (P = 0.039), cancer susceptibility 19 (CASC19) (P = 0.021), LINC00152 (P = 0.013), NONHSAT058834 (P = 0.007), NONHSAT007692 (P = 0.045), and ENST00000415991.1 (P = 0.045) showed significant differences in expression levels between the cancer tissue and paracancer tissue groups. AC017002.2, NONHSAT058834, NONHSAT007692, and ENST00000415991.1 have not yet been reported in RC. The crucial mRNAs myelocytomatosis viral oncogene (MYC), transforming growth factor beta induced (TGFBI), and solute carrier family 7 member 5 (SLC7A5) were selected. AC017002.2 and LINC00152 were positively correlated with MYC, TGFBI, and cytochrome P450 family 2 sub-family B member 6 (All r > 0.900, P < 0.050). NONHSAT058834 was positively associated with MYC (r = 0.930, P < 0.001), and CASC19 was positively correlated with SLC7A5 (r = 0.922, P < 0.001). CONCLUSION This study offers convincing evidence of differentially expressed lncRNAs and mRNAs as potential biomarkers in RC.

Objective To discuss the application value of CT scanning technology in cause of death determination of medical dispute cases. Methods From July 2017 to December 2018, postmortem CT imaging data of 12 medical dispute cases were collected. CT imaging diagnosis results and anatomy findings as well as differences between antemortem and postmortem CT diagnosis were compared. The advantages and disadvantages of CT routine tests of the cadavers in terms of the diagnosis of disease and damage were analyzed. Results The comparison between CT imaging diagnosis and anatomical findings showed that CT scans had advantages in the diagnosis of disease and damage with large differences in density changes, such as atelectasis, pneumonia, calcification, fracture and hemorrhage, etc. The comparison of CT diagnosis in antemortem and postmortem examination showed that the cadavers of medical dispute cases were well preserved and that postmortem CT scan was meaningful for the diagnosis of antemortem diseases. Conclusion Virtual anatomy technology has a relatively high application value in postmortem examination of medical dispute cases. It can provide effective information for the appraisers before the autopsy and can also provide a reference for cause of death analysis when the anatomy cannot be performed.
Autopsy ; Cadaver ; Dissent and Disputes ; Humans ; Postmortem Changes ; Tomography, X-Ray Computed

Objective To understand the distribution characteristics of body fat content and basal metabolic rate among Xibo adults in Xinjiang and to explore the correlation between them. Methods The people aged between 35 and 70 were randomly selected to be the research object, and a total of 536 people (263 males and 273 females) were selected for the study. Subcutaneous fat, visceral fat, weight, stature, defat weight, body fat rate and basal metabolic rate were measured using the body composition analyzer. The correlation between body fat content and basal metabolic rate was studied by regression analysis, and regression equation coefficient was calculated. Results There were statistically significant in total fat, defate body weight and body fat percentage (P<0. 05) of different aged Xibo adults in Xinjiang, except for male visceral fat and female subcutaneous fat. There were statistically significant subcutaneous fat, total fat and body fat percentage(P<0. 05) between the sexes, except for visceral fat. The visceral fat content among Xibo adults in Xinjiang was negatively correlated with basal metabolic rate (P<0. 05). Conclusion Body lipid distribution is differences in different aged and gender among Xibo adults in Xinjiang. There is a negative correlation between visceral fat and basal metabolic rate.

Nowadays,the advantages of traditional Chinese medicine(TCM) for treatment of tumors are increasingly prominent.Triptolide shows wide-spectrum and highly effective anti-tumor activity. Moreover,nano-carrier-based triptolide drug delivery system is more powerful in improving water solubility and pharmacokinetic behavior of the drug,but it is easy to cause toxic and side effects that should not be neglected on human body. Because of tumor vascular heterogeneity and PEGylation dilemma,nanoparticulate drug delivery systems need to overcome multiple physiological and pathological barriers from drug administration to functioning. It is difficult for traditional triptolide nanoparticulate drug delivery systems to achieve active accumulation of nano-drug in tumor tissues and specific drug release in tumor target site solely relying on enhanced permeability and retention effect of solid tumor,limiting their application and clinical transformation in treatment of tumors. Based on the traditional nano-preparation system,the new functionalized nano-drug delivery system further enhances the nano-drug enrichment,penetration and controlled release at the tumor sites,which is of great significance in improving bioavailability,anti-tumor efficacy and reducing the side effects of drugs. In this paper,we summarized and analyzed the researches on new triptolide functionalized nano-drug delivery system from four perspectives,including tumor active targeting,tumor microenvironment response,polymer-drug conjugates,and multidrug co-delivery for tumor treatment,expecting to provide ideas for in-depth research and clinical application of triptolide and some other active anti-tumor TCM ingredients.
Diterpenes/chemistry* ; Drug Delivery Systems ; Epoxy Compounds/chemistry* ; Humans ; Nanoparticles ; Phenanthrenes/chemistry*

OBJECTIVETo detect the expression of miRNA in de novo and complete response SAA patients and predict the targets of the miRNAs.

METHODSThe expression profiles of miRNA from bone marrow mononuclear cells of the SAA patients with de novo and CR were detected by miRNA microarray.

RESULTSTotally 35 up-regulated and 37 down-regulated miRNA were identified in CR SAA patients in comparison with de novo SAA patients. Furthermore, by predicting the targets of the differentlly expressed miRNA, it was found that some targets associated with T cell receptor signaling pathway and cell adhesion molecules.

CONCLUSIONSome miRNA may be involved in the pathogenesis of SAA.

To measure particle size distribution of phenols in mainstream cigarette smoke aerosol,the particles of cigarette smoke aerosol were divided into 12 stages using single channel smoking machine coupled electrical low-pressure impactor (ELPI) and collected by 12 polyester films.The collected particles were weighted and then analyzed by ultra-high performance liquid chromatography-fluorescence detection (UPLC-FLD) to determine the 14 phenols in the different size particles.The results showed that the aerosols collecting method had good stability with relative standard deviation (RSD) of collected particles mass less than 10%.The analyzing results of 14 phenols by UPLC-FLD showed that the linear correlation coefficients(R2) were greater than 0.9959,with detection limits were less than 1.2 ng/cig and recoveries were 80.1%-115.0%.The distributions of 14 phenols with respect to smoke aerosol particle size were investigated.The results indicated that except 4-ethyl-2-methoxy-phenol not detected,the other 13 phenols were detected in mainstream cigarette smoke aerosol.The content of 13 phenols appeared increasing at first and then decreasing with increase of the particle size which distributed in a pattern similar to that of particle mass.All of 13 phenols were present in higher amounts in the medium size particles (0.261-0.722 μm) with peak content in particles 0.431 μm.The distribution of concentrations (ratio of content to particle mass) of 13 phenols in different size particles was different.The concentrations of phenol and mono-substituted phenol appeared to first increase and then decrease with increasing smoke aerosol particle size and were higher in medium size particles (0.261-0.772 μm).The concentrations of benzenediol and mono-substituted benzenediol were uniformly distributed in medium size particles (0.144-1.166 μm),and the concentration of disubstituted phenol was uniform throughout the particles of varying sizes.