Lab on a single microbead: An enzyme-free strategy for the sensitive detection of microRNA via efficient localized catalytic hairpin assembly.

Background: Accurate quantification of microRNA (miRNA) is of great significance because it provides opportunities for the accurate early diagnosis of a series of human diseases including cancers. Currently, complicated nucleic acid amplification technologies are always required for the highly sensitive miRNA detection. The introduction of nucleic acid signal amplification coupled with various enzymes will inevitably lead to tedious work and increase the complexity of the analysis process.

Precisely Designed Hydrophilic Networks in Microporous Layer for High Performance of Proton Exchange Membrane Fuel Cells.

Proton exchange membrane fuel cell (PEMFC) is considered the next promising generation of power devices for vehicles. The microporous layer (MPL) improves the performance through effective water management. In this study, local hydrophilic networks of nano- and macropores are formed in different MPLs.

The Utility of the Radiocapitellar View in Pediatric Medial Epicondyle Fracture Evaluation.

Background: Anteroposterior (AP) and lateral radiographs often underestimate displacement in medial epicondyle fractures, further complicating the already debated operative indications. The radiocapitellar (RC) view is an alternative radiograph that allows for the separation of the humeroradial and humeroulnar joints. This study investigates the utility of the RC view in measuring displacement and identifying the need for operative intervention in pediatric medial epicondyle fractures.

Insulin and insulin-like growth factor and risk of postmenopausal estrogen receptor-positive breast cancer: a case-cohort analysis.

Background: Higher concentration of insulin-like growth factor-1 (IGF-1) increases postmenopausal breast cancer risk, but evidence for insulin and c-peptide is limited. Further, not all studies have accounted for potential confounding by biomarkers from other biological pathways, and not all were restricted to estrogen receptor (ER)-positive breast cancer.

Methods: This was a case-cohort study of 1,223 postmenopausal women (347 with ER-positive breast cancer) from the Melbourne Collaborative Cohort Study.