Coordinated post-transcriptional control of oncogene-induced senescence by UNR/CSDE1.

Oncogene-induced senescence (OIS) is a form of stable cell-cycle arrest arising in response to oncogenic stimulation. OIS must be bypassed for transformation, but the mechanisms of OIS establishment and bypass remain poorly understood, especially at the post-transcriptional level. Here, we show that the RNA-binding protein UNR/CSDE1 enables OIS in primary mouse keratinocytes.

Heavy metals and pesticide exposure from agricultural activities and former agrochemical factory in a Salvadoran rural community.

Pesticide handling in farming activities involves substantial hazards for the rural population and for the environment. In Latin America, it is estimated that the population at risk of being affected by heavy metals is over 4 million. This research describes the different types of exposure to pesticides and heavy metals in a rural population (Loma del Gallo), considering both environmental and occupational exposure.

Co-option of the piRNA pathway for germline-specific alternative splicing of C. elegans TOR.

Many eukaryotic genes contain embedded antisense transcripts and repetitive sequences of unknown function. We report that male germline-specific expression of an antisense transcript contained in an intron of C. elegans Target of Rapamycin (TOR, let-363) is associated with (1) accumulation of endo-small interfering RNAs (siRNAs) against an embedded Helitron transposon and (2) activation of an alternative 3' splice site of TOR.

Effect of diazepam on adenosine 3',5'-cyclic monophosphate (cAMP) plasma levels in anesthetized patients.

Background: It has been previously demonstrated that diazepam inhibits the cyclic nucleotide phosphodiesterase type 4 isozyme (PDE4). PDE enzymes mediate the hydrolysis of the nucleotide adenosine 3',5'-cyclic monophosphate (cAMP).

Objective: The aim of this study was to determine whether IV administration of diazepam affects cAMP plasma levels in anesthetized patients.

Postcardiopulmonary bypass hypoxemia: a prospective study on incidence, risk factors, and clinical significance.

Objective: To evaluate the clinical significance of low arterial oxygen tension-inspired oxygen concentration (PaO2-FIO2) ratio, as a measure of hypoxemia, in the early period after cardiac surgery with cardiopulmonary bypass (CPB); and to evaluate the preoperative, intraoperative, and postoperative factors contributing to the development of hypoxemia within the first 24 hours after cardiac surgery with CPB.

Design: Prospective observational study.

Setting: University hospital.