Monitoring of oxidative and metabolic stress during cardiac surgery by means of breath biomarkers: an observational study

Research articl

Improvement of in vitro donor plant competence to increase de novo shoot organogenesis in rose genotypes

A procedure was developed for in vitro propagation of Rosa genotypes along with an efficient de novo shoot organogenesis (DNSO) method. We tested, on one genotype (hybrid of Rosa wichurana), the effects of MS basal medium complemented with two growth regulators to achieve either shoot elongation or shoot multiplication of plants. These media were complemented with carbohydrate concentrations from different sources. Then, the impacts of various carbohydrates (fructose, glucose, maltose, sorbitol, sucrose) on the growth and development of several rose genotypes during donor plant subculturing were studied on SMM. The results showed high variability in growth and development between genotypes. Contrary to other members of the Rosaceae family, no correlation was found between the shoot size and number when the amount of sorbitol was increased. Murashige and Skoog medium supplemented with 3.0 mg L−1 BAP and containing fructose or glucose at 30 g L−1 was chosen to induce leaf explants for the DNSO experiments. MS basal medium complemented with TDZ/IBA at three ratios and the same range of carbohydrate sources were tested for DNSO. Significant genotypic variations with regard to the percentage of regeneration was demonstrated with six genotypes. For two genotypes, a hybrid of Rosa wichurana and Rosa ‘White Pet’, we defined the conditions required to obtain 100% DNSO. For Rosa chinensis ‘Old blush’ and the rootstock genotype Rosa ‘Natal Briar’, we obtained 74 and 87.5% DNSO and only 56.67% and 37.5% for Rosa GUY SAVOY® (‘Delstrimen’) and Rosa ‘Félicité et Perpétue’ respectively. This adventitious shoot regeneration method may be used for large-scale shoot propagation and genetic engineering studies in Rosa

Differential Expression between Human Dermal Papilla Cells from Balding and Non-Balding Scalps Reveals New Candidate Genes for Androgenetic Alopecia

Agency for Science, Technology and Research (A*STAR). EC is supported by the A*STAR Graduate Scholarship program

Artérite gigantocellulaire : apport de l’écho-doppler

International audienceGiant cell arteritis is the most common primary vasculitis of large-vessel occurring in subjects over 50 years of age. Many imaging techniques has been evaluated to improve the diagnosis of giant cell arteritis. Among these imaging techniques, ultrasound has shown good performances to detect inflammatory involvement of the temporal arteries as well as branches of the aorta. Several publications and recent EULAR recommendations have emhasized the place of this tool in the diagnosis of giant cell arteritis.L’artérite à cellules géantes est la plus fréquente des vascularites primitives des artères de gros calibre survenant chez les sujets de plus de 50 ans. Plusieurs examens d’imagerie ont été évalués dans le but d’affiner le diagnostic de l’artérite à cellules géantes. Parmi ces techniques, l’écho-doppler a montré de bonnes performances pour dépister une atteinte inflammatoire des artères temporales ainsi que des branches de l’aorte. Plusieurs publications et les récentes recommandations de l’EULAR ont réaffirmé la place de cette technique dans le diagnostic d’artérite à cellules géantes

Dumping syndrome et agonistes du GLP-1

International audienc