Hemina estimula la maduración eritroide, induciendo la vía autofágica

La autofagia es un mecanismo por el cual macromoléculas citosólicas e incluso organelas, son secuestradas en estructuras membranosas y degradadas en los lisosomas. La autofagia ha sido asociada a procesos tan importantes como la diferenciación de algunos tipos celulares, como los reticulocitos, ya que es necesario el remodelamiento y la eliminación de ciertas estructuras internas

Involving patients and their families in deciding to use next generation sequencing: Results from a nationally representative survey of U.S. oncologists

Objective: Next generation sequencing (NGS) may aid in tumor classification and treatment. Barriers to shared decision-making may influence use of NGS. We examined, from oncologists’ perspectives, whether barriers to involving patients/families in decision-making were associated with NGS use. Methods: Using data from the first national survey of medical oncologists’ perspectives on precision medicine (N = 1281), we approached our analyses in two phases. Bivariate analyses initially evaluated associations between barriers to involving patients/families in deciding to use NGS and provider- and organizational-level characteristics. Modified Poisson regressions then examined associations between patient/family barriers and NGS use. Results: Approximately 59 % of oncologists reported at least one barrier to involving patients/families in decision-making regarding NGS use. Those reporting patient/family barriers tended to have fewer genomic resources at their practices, to be in rural or suburban areas, and to have a higher proportion of Medicaid patients. However, these barriers were not associated with NGS use. Conclusions: Oncologists encounter barriers to involving patients/families in NGS testing decisions. Organizational barriers may also potentially play a role in testing decisions. Practice implications: To foster patient-centered care, strategies to support patient involvement in genomic testing decisions are needed, particularly among practices in low-resource settings

Energy and decay width of the pi-K atom

The energy and decay width of the pi-K atom are evaluated in the framework of the quasipotential-constraint theory approach. The main electromagnetic and isospin symmetry breaking corrections to the lowest-order formulas for the energy shift from the Coulomb binding energy and for the decay width are calculated. They are estimated to be of the order of a few per cent. We display formulas to extract the strong interaction S-wave pi-K scattering lengths from future experimental data concerning the pi-K atom.Comment: 37 pages, 5 figures, uses Axodra