Primary Care-Relevant Interventions for Tobacco and Nicotine Use Prevention and Cessation in Children and Adolescents: Updated Evidence Report and Systematic Review for the US Preventive Services Task Force.

Importance: Interventions to discourage the use of tobacco products (including electronic nicotine delivery systems or e-cigarettes) among children and adolescents may help decrease tobacco-related illness and injury.

Objective: To update the 2013 review on primary care-relevant interventions for tobacco use prevention and cessation in children and adolescents to inform the US Preventive Services Task Force.

Data Sources: The Cochrane Central Register of Controlled Trials and Cochrane Database of Systematic Reviews, MEDLINE, PsyINFO, and EMBASE (September 1, 2012, to June 25, 2019), with surveillance through February 7, 2020.

Contraceptive knowledge and use among women with intellectual, physical, or sensory disabilities: A systematic review.

Background: Women spend most of their reproductive years avoiding pregnancy. However, we know little about contraceptive knowledge and use among women with disabilities, or about strategies to improve contraceptive knowledge and decision-making in this population.

Objective: To systematically review published literature on women with disabilities and: 1) contraceptive knowledge; 2) attitudes and preferences regarding contraception; 3) contraceptive use; 4) barriers and facilitators to informed contraceptive use; and 5) effectiveness of interventions to improve informed contraceptive decision-making and use.

The Association Between Hospital Capacity Strain and Inpatient Outcomes in Highly Developed Countries: A Systematic Review.

Background: Increases in patient needs can strain hospital resources, which may worsen care quality and outcomes. This systematic literature review sought to understand whether hospital capacity strain is associated with worse health outcomes for hospitalized patients and to evaluate benefits and harms of health system interventions to improve care quality during times of hospital capacity strain.

Methods: Parallel searches were conducted in MEDLINE, CINAHL, the Cochrane Library, and reference lists from 1999-2015.

Structure/function of human type 1 3beta-hydroxysteroid dehydrogenase: An intrasubunit disulfide bond in the Rossmann-fold domain and a Cys residue in the active site are critical for substrate and coenzyme utilization.

The human type 1 (placenta, breast tumors) and type 2 (gonads, adrenals) isoforms of 3beta-hydroxysteroid dehydrogenase/isomerase (3beta-HSD) are key enzymes in steroidogenic pathways leading to the production of all active steroid hormones. Kinetic analyses of purified 3beta-HSD1 show that the Michaelis-Menten constants (Km) for substrates and cofactor are decreased dramatically (three- to eight-fold) by the addition of beta-mercaptoethanol (BME), which suggest that a disulfide bond may be critical to ligand utilization. Western immunoblots and SDS-PAGE of purified 3beta-HSD1 in the presence or absence of BME showed a lack of intersubunit disulfide bonds in the dimeric enzyme.