Dissecting lncRNA-mRNA competitive regulatory network in human islet tissue exosomes of a type 1 diabetes model reveals exosome miRNA markers

BACKGROUND

Emerging evidence shows that exosomes play a crucial role in the occurrence and development of diabetes and its complications. The molecules in exosomes can be regarded as important markers for the diagnosis of diseases. However, it is presently unclear the pathological association mechanism between exosomes and diabetes.

RESULTS

In this study, transcriptome data and lncRNA regulatory association data of human pancreatic islet-derived exosome were integrated to construct the ceRNA network. Network analysis revealed that lncRNA with differential expression were primarily involved in islet insulin secretion signaling pathways, including Hippo, TGF-beta, Wnt, FOXO, Neurotrophin and ErbB signaling pathway. Further, combined with miRNA mediated competitive regulation and differential expression analysis results, potential markers of diabetes were revealed and validated in independent datasets. Finally, we analyzed the mechanisms of diabetes based on the competitive regulatory association and function of lncRNA.

CONCLUSION

Our results suggest that lncRNA such as lncRNA PVT1, LINC00960 and hsa-miR-107 might be involved in inflammation response in T1DM, and the former lncRNA chose in the present study may serve as novel biomarkers and potential targets for the diagnosis and treatment of T1DM.

Application of Exercised-based Pre-rehabilitation in Perioperative Period of Patients with Gastric Cancer

Objective

To analyze the difference between exercised-based pre-rehabilitation and postoperative rapid rehabilitation of gastric cancer patients.

Methods

The clinical data of 120 patients who underwent surgical treatment between 2016 and 2018 in our hospital with pathologically confirmed gastric cancer were retrospectively reviewed. According to the different treatments during the perioperative period, they were divided into exercised-based pre-rehabilitation group and postoperative rapid rehabilitation group. Factor analysis was used to analyze pre-rehabilitation and postoperative rehabilitation of patients with gastric cancer after stress response, nutritional status, insulin resistance, and inflammatory response in patients with gastric cancer, and to further evaluate the value of pre-recovery accelerated postoperative recovery.

Results

The postoperative stress response, insulin resistance, and inflammatory response in the pre-rehabilitation group were lower than the conventional treatment group. The nutritional status was improved faster than the traditional treatment group. Exercised-based pre-rehabilitation for the rapid recovery of postoperative gastrointestinal function in patients with gastric cancer surgery has significant value.

Conclusion

Exercised-based pre-rehabilitation has great significance for the accelerated rehabilitation of patients with gastric cancer during perioperative period.

Helical long-period grating manufactured with a CO2 laser on multicore fiber

We have demonstrated a helical long-period grating (HLPG) manufactured from multicore fiber (MCF) combined with twist and CO₂-laser heating technology. The MCF we used behaves as a kind of single mode fiber. The nineteen cores of MCF are distributed hexagonally which make the helical structure only exist in core area after heating and twisting. There are several strong couplings between the core and cladding modes at different wavelengths when the grating pitch was 900 µm. The extinction ratio of the main coupling reached 20 dB at 1550 nm. We have investigated the sensor characteristics of the HLPG. It is found that the grating presents clear sensitivity to refractive-index while exhibiting smaller cross-sensitivity to environmental temperature than conventional long-period gratings. The HLPG also shows great potential as a twist sensor, which has a sensitivity up to 0.198 nm/(rad/m) and can apply for measuring twist directions.

Bronchial lavage P 16INK4A gene promoter methylation and lung cancer diagnosis: A meta-analysis

OBJECTIVE

To evaluate the diagnostic value of bronchial lavage P16INK4A promoter methylation and lung cancer.

MATERIALS AND METHODS

The databases of PubMed, Medline, China National Knowledge Infrastructure, and Wanfang were electronically searched by two reviewers to find the suitable studies related to the association between P16INK4A promoter methylation and lung cancer. The P16INK4A promoter methylation rate was extracted from each included individual study. The diagnostic sensitivity, specificity, and area under the receiver operating characteristic ROC curve of bronchial lavage P16INK4Aas a biomarker for diagnosis of lung cancer were pooled by stata 11.0 software (Stata Corporation, College Station, TX, USA).

RESULTS

At last, 10 publications were included in this meta-analysis. Of the included 10 studies, five are published in English with relatively high quality and other five papers published in Chinese have relatively low quality. The pooled sensitivity and specificity of bronchial lavage P16INK4A promoter methylation for lung cancer diagnosis were 0.61 (95% confidence interval [CI]: 0.57-0.65) and 0.81 (95% CI: 0.78-0.85), respectively, with random effect model. The ROC curve were calculated and drawn according to Bayes' theorem by stata 11.0 software. The systematic area under the ROC was 0.72 (95% CI: 0.68-0.76), which indicated that the diagnostic value of bronchial lavage P16INK4A promoter methylation for lung cancer was relatively high. Moreover, no significant publication bias was existed in this meta-analysis (t = 0.69, P > 0.05).

CONCLUSION

Bronchial lavage P16INK4A promoter methylation can be a potential biomarker for diagnosis of lung cancer.