84 research outputs found

    General Quality Control Methods

    No full text

    Expression profiles of pivotal microRNAs and targets in thyroid papillary carcinoma: an analysis of The Cancer Genome Atlas

    No full text
    Dan Cong,1 Mengzi He,2 Silin Chen,2 Xiaoli Liu,1 Xiaodong Liu,2 Hui Sun11Jilin Provincial Key Laboratory of Surgical Translational Medicine, Department of Thyroid and Parathyroid Surgery, People’s Republic of China–Japan Union Hospital, 2Key Laboratory of Radiobiology (Ministry of Health), School of Public Health, Jilin University, Changchun, Jilin, People’s Republic of ChinaAbstract: In the present study, we analyzed microRNA (miRNA) and gene expression profiles using 499 papillary thyroid carcinoma (PTC) samples and 58 normal thyroid tissues obtained from The Cancer Genome Atlas database. A pivotal regulatory network of 18 miRNA and 16 targets was identified. Upregulated miRNAs (miR-222, miR-221, miR-146b, miR-181a/b/d, miR-34a, and miR-424) and downregulated miRNAs (miR-9-1, miR-138, miR-363, miR-20b, miR-195, and miR-152) were identified. Among them, the upregulation of miR-424 and downregulation of miR-363, miR-195, and miR-152 were not previously identified. The genes CCNE2 (also known as cyclin E2), E2F1, RARA, CCND1 (cyclin D1), RUNX1, ITGA2, MET, CDKN1A (p21), and COL4A1 were overexpressed, and AXIN2, TRAF6, BCL2, RARB, HSP90B1, FGF7, and PDGFRA were downregulated. Among them, CCNE2, COL4A1, TRAF6, and HSP90B1 were newly identified. Based on receiver operating characteristic curves, several miRNAs (miR-222, miR-221, and miR-34a) and genes (CCND1 and MET) were ideal diagnostic indicators, with sensitivities and specificities greater than 90%. The combination of inversely expressed miRNAs and targets improved diagnostic accuracy. In a clinical feature analysis, several miRNAs (miR-34a, miR-424, miR-20b, and miR-152) and genes (CCNE2, COL4A1, TRAF6, and HSP90B1) were associated with aggressive clinical features, which have not previously been reported. Our study not only identified a pivotal miRNA regulatory network associated with PTC but also provided evidence that miRNAs and target genes can be used as biomarkers in PTC diagnosis and clinical risk evaluation.Keywords: thyroid carcinoma, miR-34a, miR-424, miR-20b, miR-15

    Synthesis and Characterization of a Pentiptycene-Derived Dual Oligoparaphenylene Nanohoop

    No full text
    Structural designs combining oligoparaphenylene-derived nanohoops with other functional organic building blocks should lead to novel molecular architectures with intriguing properties. Herein, we describe the synthesis of a pentiptycene-derived chiral dual nanohoop molecule with key steps including ring expansion through dianthracene cycloreversion and transannular [4+2] cycloaddition across a 64-membered macrocycle. The crystal structure of the nanohoop molecule displays an ordered packing pattern with long-range channels in the solid state. Furthermore, nonracemizable enantiomers of the nanohoop were obtained through resolution and exhibited promising chiroptical properties

    Synthesis of Oligoparaphenylene-Derived Nanohoops Employing an Anthracene Photodimerization-Cycloreversion Strategy

    No full text
    The century-old yet synthetically underexplored anthracene photodimerization-cycloreversion reactions have been employed as the key steps to access highly strained aromatic hydrocarbons. Herein we report the chemical syntheses of oligoparaphenylene-derived nanohoops in five steps or less featuring a rigid dianthracene synthon. The newly synthesized nanohoops display intriguing experimental and computational properties

    Predictive Value of Nutritional Risk for All-Cause Death and Functional Outcomes in Chinese Elderly Patients with Acute Stroke: A 3-Year Follow-Up Study

    No full text
    Wen-Jie Cong,1,* Zhi-Peng Liu,2,* Yi-Xin Liang,2 Sheng-Lie Ye,2 Zhong-Ming Cai,2 Hao-Man Chen,2 Cheng-Wei Liao,2 Qun-Li Lin,3 Ren-Qian Feng,2 Xu-Dong Zhou,4 Yan-Zhi Wu,2 Le-Qiu Sun,5 Xue-Rong Huang,6 Man-Man Zhang,7 Gui-Qian Huang,8 Bei-Lei Zhu7 1Department of Acupuncture and Physiotherapy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China; 2The First Clinical School, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China; 3Department of Neurology, Yongjia People’s Hospital, Wenzhou, Zhejiang, People’s Republic of China; 4Department of Neurology, Pingyang People’s Hospital, Wenzhou, Zhejiang, People’s Republic of China; 5Department of Neurology, Affiliated Yueqing Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China; 6Department of Neurology, Ruian People’s Hospital, Wenzhou, Zhejiang, People’s Republic of China; 7Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University Wenzhou Zhejiang People’s Republic of China; 8School of Mental Health, Wenzhou Medical University, Wenzhou, People’s Republic of China*These authors contributed equally to this workCorrespondence: Bei-Lei Zhu, Tel +86 13567896076, Email [email protected]: To explore the predictive value of nutritional risk for all-cause death and functional outcomes among elderly acute stroke patients.Patients and Methods: A total of 479 elderly acute stroke patients were enrolled in this study. The nutritional risk of patients was screened by the GNRI and NRS-2002. The primary outcome was all-cause death, and the secondary outcome was poor prognosis defined as a modified Rankin Scale (mRS) score ≥ 3.Results: Based on the NRS-2002, patients with nutritional risk had a higher risk of all-cause death at 3 months (adjusted OR: 3.642, 95% CI 1.046~12.689) and at 3 years (adjusted OR: 2.266, 95% CI 1.259~4.076) and a higher risk of adverse functional outcomes at 3 months (adjusted OR: 2.748, 95% CI 1.518~4.972. Based on the GNRI, compared to those without nutritional risk, patients with mild malnutrition also had a higher risk of all-cause death at 3 months (adjusted OR: 7.186, 95% CI 1.550~33.315) and at 3 years (adjusted OR: 2.255, 95% CI 1.211~4.199) and a higher risk of adverse functional outcomes at 3 months (adjusted OR: 1.947, 95% CI 1.030~3.680), so patients with moderate and severe malnutrition had a higher risk of all-cause death at 3 months (adjusted OR: 6.535, 95% CI 1.380~30.945) and at 3 years (adjusted OR: 2.498, 95% CI 1.301~4.799) and a higher risk of adverse functional outcomes at 3 months (adjusted OR: 2.213, 95% CI 1.144~4.279).Conclusion: Nutritional risk increases the risk of poor short-term and long-term outcomes in elderly patients with acute stroke. For elderly stroke patients, we should pay attention to early nutritional risk screening, and effective intervention should be provided to improve the prognosis of such patients.Keywords: acute stroke, malnutrition, nutritional screening, all-cause death, GNRI, NRS-200
    corecore