Biostimulation methods based on chemical communication improve semen quality in male breeder rabbits.

Biostimulation aims to optimize reproductive parameters as part of animal management practices by modulating animal sensory systems. Chemical signals, mostly known as pheromones, have a great potential in this regard. This study was conducted to determine the influence of short-term male rabbit exposure to different biological secretions, potentially pheromone-mediated, on reproductive parameters of males.

Gas cooking indoors and respiratory symptoms in the ECRHS cohort.

Background: Gas cooking is an important source of indoor air pollutants, and there is some limited evidence that it might adversely be associated with respiratory health. Using repeated cross-sectional data from the multi-centre international European Community Respiratory Health Survey, we assessed whether adults using gas cookers have increased risk of respiratory symptoms compared to those using electric cookers and tested whether there was effect modification by a priori selected factors.

Methods: Data on respiratory symptoms and gas cooking were collected from participants at 26-55 and 38-67 years (median time between examinations 11.

Sex separation unveils the functional plasticity of the vomeronasal organ in rabbits.

Chemosensory cues are vital for social and sexual behaviours and are primarily detected and processed by the vomeronasal system (VNS), whose plastic capacity has been investigated in mice. However, studying chemosensory plasticity outside of laboratory conditions may give a more realistic picture of how the VNS adapts to a changing environment. Rabbits are a well-described model of chemocommunication since the discovery of the rabbit mammary pheromone and their vomeronasal organ (VNO) transcriptome was recently characterised, a first step to further study plasticity-mediated transcriptional changes.

TB in the elderly: clinical features and outcomes.

TB in low-incidence countries is characterised by changes in age distribution towards larger numbers of cases among the elderly. To investigate clinical features and outcomes of TB treatment in older patients and identify predictors of poor outcome. Multicentre retrospective study of new TB cases from 53 hospitals included in the registry of the Integrated Tuberculosis Research Programme of the Spanish Society of Pulmonology and Thoracic Surgery () between 2006 and 2020.