Catalytic Aldehyde-Alkyne Couplings Triggered by Ketyl Radicals.

A general and flexible platform for catalytic aldehyde-alkyne couplings triggered by ketyl radicals is described. This open-shell strategy necessitates only a catalytic quantity of a photoredox catalyst, along with Hünig's base (DIPEA) as a halogen atom transfer reagent. The reaction proceeds through sequential steps involving activation, halogen atom transfer, and radical addition.

Cyclic Amine Synthesis via Catalytic Radical-Polar Crossover Cycloadditions.

The rapid assembly of valuable cyclic amine architectures in a single step from simple precursors has been recognized as an ideal platform in term of efficiency and sustainability. Although a vast number of studies regarding cyclic amine synthesis has been reported, new synthetic disconnection approaches are still high in demand. Herein, we report a catalytic radical-polar crossover cycloaddition to cyclic amine synthesis triggered from primary sulfonamide under photoredox condition.

Anal human papillomavirus and its associations with abnormal anal cytology among men who have sex with men.

Human papillomavirus (HPV) infection contributes to most anal cancers and premalignant intraepithelial lesions. This study investigated anal HPV infections and cytological abnormalities among men who have sex with men (MSM). Sociodemographic characteristics and sexual behaviors were collected by using a structured questionnaire.

Shall I trust the report? Variable performance of Sanger sequencing revealed by deep sequencing on HIV drug resistance mutation detection.

Background: The clinical utilisation of deep sequencing in HIV treatment has been hindered due to its unknown correlation with standard Sanger genotyping and the undetermined value of minority drug resistance mutation (DRM) detection.

Objectives: To compare deep sequencing performance to standard Sanger genotyping with clinical samples, in an effort to delineate the correlation between the results from the two methods and to find the optimal deep sequencing threshold for clinical utilisation.

Methods: We conducted a retrospective study using stored plasma collected from August 2014 to March 2018 for HIV genotyping with the commercial Sanger genotyping kit.

Taiwan guideline on oral pre-exposure prophylaxis for HIV prevention - 2018 update.

Pre-exposure prophylaxis (PrEP) for prevention of human immunodeficiency virus infection is proved to be effective and has been implemented worldwide. This article introduces the guideline development and revised recommendations and guidance on PrEP provision in the updated Taiwan PrEP guideline. The Taiwan PrEP guideline writing group searched randomized controlled trials and guidelines published before October 2017 through Medline/PubMed, Cochrane Database, Embase and ClinicalTrials.

Overproduction of active efflux pump and variations of OprD dominate in imipenem-resistant Pseudomonas aeruginosa isolated from patients with bloodstream infections in Taiwan.

Background: The emergence of imipenem-resistant Pseudomonas aeruginosa (IRPA) has become a great concern worldwide. The aim of this study was to investigate resistance mechanisms associated with bloodstream isolated IRPA strains in Taiwan.

Results: A total of 78 non-duplicated IRPA isolates were isolated from patients with bloodstream infection.