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  • Lind Termansen posted an update 1 week, 3 days ago

    Although populations of the two taxa present a marked genetic structure and have experienced parallel demographic histories, our coalescent-based analyses suggest that reduced dispersal has fueled diversification in the short-winged C. c. corsicus. Collectively, our study illustrates how dispersal reduction can speed up geographical diversification and increase the opportunity for allopatric speciation in topographically complex landscapes.Continuing our studies on NO-donating ursolic acid-benzylidene derivatives as potential antitumor agents, we designed and synthesized a series of new arylidene derivatives containing NO-donating ursolic acid and aromatic heterocyclic units. Compounds 5c and 6c showed a significant broad-spectrum antitumor activity. Compound 5c exhibited nearly three- to nine-fold higher cytotoxicity as compared with the parent drug in A549, MCF-7, HepG-2, HT-29, and HeLa cells, and it was also found to be the most potent apoptosis inducer of MCF-7 cells. More importantly, compound 5c arrested the MCF-7 cell cycle in the G1 phase, which was associated with caspase activation and a decrease of the Bcl-2/Bax ratio. Meanwhile, compound 5c caused changes in morphological features, dissipation of the mitochondrial membrane potential, and accumulation of reactive oxygen species. A docking study revealed that the nitroxyethyl moiety of compound 5c may form hydrogen bonds with caspase-8 amino acid residues (SER256 and HIS255). Together, these data suggest that NO-donating ursolic acid-arylidene derivatives are potent apoptosis inducers in tumor cells.Dravet syndrome (DS) is a rare severe epilepsy syndrome associated with slowed psychomotor development and behavioral disorders from the second year onward in a previously seemingly normal child. Among cognitive impairments, visuospatial, sensorimotor integration, and expressive language deficits are consistently reported. There have been independent hypotheses to deconstruct the typical cognitive development in DS (dorsal stream vulnerability, cerebellar-like pattern, sensorimotor integration deficit), but an encompassing framework is still lacking. We performed a scoping review of existing evidence to map the current understanding of DS cognitive and behavioral developmental profiles and to summarize the evidence on suggested frameworks. We searched PubMed, Scopus, PsycInfo, and MEDLINE to identify reports focusing on cognitive deficits and/or behavioral abnormalities in DS published between 1978 and March 15, 2020. We followed the Preferred Reporting Items for Systematic reviews and Meta-Analyses extensionframework of the three main hypotheses advanced a pervasive sensorimotor integration deficit, encompassing an occipito-parietofrontal circuit (dorsal stream) dysfunction and a coexistent cerebellar deficit.Surgical patients may experience inadvertent perioperative hypothermia, a condition that can cause a variety of complications, including surgical site infection (SSI). The authors of this systematic review used the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols guidelines to examine the role of perioperative hypothermia in the development of SSI. check details The authors searched the PubMed, Cumulative Index Nursing and Allied Health Literature, Cochrane, and ScienceDirect databases for eligible articles published between January 2008 and November 2018 and identified seven studies that met the inclusion criteria. The results of this review indicate that the relationship between hypothermia and SSI is closely related to the type of the surgical intervention performed (eg, emergent, colorectal), and that severe hypothermia (eg, less then 35.0° C [95.0° F]) can increase the risk of developing an SSI. Perioperative nurses should monitor patients for inadvertent hypothermia and prevent its occurrence when possible.Health care organizations no longer receive reimbursement for stage 3, stage 4, and unstageable hospital-acquired pressure injuries, which are never events that require interdisciplinary collaboration to treat and prevent. Perioperative patients are at risk for developing pressure injuries that may not manifest until five or more days after surgery. This quality improvement project aimed to inform inpatient nursing and health care professionals of the potential areas of skin breakdown after surgery using an annotated image (AI) depicting intraoperative patient positioning. To gauge OR nurses’ use of the AI, we tracked image addition to the patient records weekly from May 2018 to May 2019 and found an overall average participation rate of 80% to 90%. Adding the AI of surgical positioning and pressure points raised awareness of the potential for skin breakdown and became a valuable communication tool for the inpatient nurses who were providing postoperative care to prevent pressure injuries.Operating room efficiency is an important consideration for perioperative nurse leaders because it can affect their facilities’ revenue and provider and patient satisfaction. Using consistent perioperative teams, including the same RN circulator and scrub person, for consecutive procedures may improve OR efficiency. This retrospective cross-sectional cohort study assessed the effects of a consistent team in the form of RN circulator-scrub person dyads on the total OR and turnover times for 310 surgical procedures using electronic OR records data from the National Surgical Quality Improvement Program that was collected in 2008. Controlling for relevant variables (eg, procedure type consistency, number of staff members present, procedure complexity), the association between RN circulator-scrub person dyads and total OR time and turnover time was not significant.Surgical patients with glycemic controller devices and insulin pumps Key words glycemic controller, insulin, insulin pump, glucose monitoring, blood glucose level. Using leftover IV fluids to clean the surgical incision site after closure Key words IV fluid, sterile field, infection, contamination. A certified surgical first assistant’s scope of practice after obtaining RN licensure Key words scope of practice, certified surgical first assistant, RN first assistant (RNFA), license. Using instruments outside the scope of the manufacturer’s instructions for use Key words instructions for use (IFU), instrument, manufacturer, risk. Transferring patients from a prone position on the OR bed to a supine position on the stretcher Key words patient transfer, positioning device, repositioning, alignment, prone.