Evolutionary drivers of reproductive fitness in two endangered forest trees.

Population genetics theory predicts a relationship between fitness, genetic diversity (H) and effective population size (N), which is often tested through heterozygosity-fitness correlations (HFCs). We tested whether population and individual fertility and heterozygosity are correlated in two endangered Mexican spruces (Picea martinezii and Picea mexicana) by combining genomic, demographic and reproductive data (seed development and germination traits). For both species, there was a positive correlation between population size and seed development traits, but not germination rate.

Effectiveness of antibiotic-coated intramedullary nails for open tibia fracture infection prevention. A systematic review and meta-analysis.

Introduction: Open Tibia fractures are associated with high rates of Fracture Related Infection (FRI). Given the negative outcomes and increased costs related to the latter, several prophylactic local antibiotic delivery methods have been proposed, aiming to decrease the FRI rate. Our objective with this study was to determine the effectiveness of antibiotic-coated intramedullary nails for open tibia FRI prevention.

Phenotypic plasticity of growth ring traits in at the ends of its elevational gradient.

Introduction: Phenotypic plasticity (PP) could be an important short-term mechanism to modify physiological and morphological traits in response to climate change and global warming, particularly for high-mountain tree species. The objective was to evaluate PP response of growth ring traits to temperature and precipitation in Lindl. populations located at the ends of its elevational gradient on two volcanic mountains in central Mexico (La Malinche and Nevado de Toluca).

Risk factors for reamputation in patients with diabetic foot: A case-control study.

Background: Reamputation as a complication of diabetic foot ulcers presents a high economic burden and represents a therapeutic failure. It is paramount to identify as early as possible patients in whom a minor amputation may not be the best option. The purpose of this investigation was to do a case-controlled study to determine risk factors associated with re-amputation in patients with DFU (diabetic foot ulcers) at two University Hospitals.

Immune cell populations differ in patients undergoing revision total knee arthroplasty for arthrofibrosis.

Arthrofibrosis following total knee arthroplasty (TKA) is a debilitating condition typically diagnosed based on clinical findings. To gain insight into the histopathologic immune cell microenvironment of arthrofibrosis, we assessed the extent of tissue fibrosis and quantified immune cell populations in specific tissue regions of the posterior capsule. We investigated specimens from three prospectively-collected, matched cohorts, grouped as patients receiving a primary TKA for osteoarthritis, revision TKA for arthrofibrosis, and revision TKA for non-arthrofibrotic, non-infectious reasons.