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Flowering phenology is arguably the most striking angiosperm phenophase. Although the response of species to climate change and the environmental correlates of the communities have received much attention, the interspecific evolution of flowering phenology has hardly been investigated. I explored this in the wind-pollinated dioecious Restionaceae (restios) of the hyperdiverse Cape flora, to disentangle the effects of phylogeny, traits, and biotic and abiotic environments on flowering time shifts.
I recorded the flowering times of 347 of the 351 species, mapped these over a 98 % complete phylogeny and inferred the evolutionary pattern and abiotic correlates of flowering time shifts. The patterns and biotic/abiotic correlates of restio community mean flowering time were explored using 934 plots.
Restios flower throughout the year, with large spring and smaller autumn peaks. Species flowering time is evolutionarily labile, poorly explained by either the environment or traits of the species, with half of all sister species allochronic. Community mean flowering time is related to elevation, temperature and rainfall.
Flowering time shifts may result from assortative mating and allochronic speciation, possibly leading to non-adaptive radiation. However, community mean flowering time may be environmentally selected. Diversification of flowering time may be non-adaptive, but species could be filtered through survival in suitable communities.
Flowering time shifts may result from assortative mating and allochronic speciation, possibly leading to non-adaptive radiation. However, community mean flowering time may be environmentally selected. Diversification of flowering time may be non-adaptive, but species could be filtered through survival in suitable communities.
Women who experience imprisonment have high morbidity and an increased risk of adverse pregnancy outcomes. Antenatal care could modify pregnancy-related risks, but there is a lack of evidence regarding antenatal care in this population.
To examine antenatal care quality indicators for women who experience imprisonment and to compare these data with data for the general population.
This population-based, retrospective cohort study used linked correctional and health administrative data from women released from provincial prison in Ontario, Canada, in 2010 and women in the general population with deliveries at 20 weeks' gestation or greater from January 1, 2005, to December 31, 2015. Data analysis was performed from January 1, 2017, to May 4, 2020.
Pregnancies in women with time in prison during pregnancy (prison pregnancies), pregnancies in women with time in prison but not while pregnant (prison control pregnancies), and pregnancies in women in the general population (general population pregnancies).
pulation both in prison and in the community.
Observational studies have suggested that angiotensin receptor blockers are associated with a unique cognitive protection. It is unclear if this is due to reduced blood pressure (BP) or angiotensin receptors type 1 blockade.
To determine neurocognitive effects of candesartan vs lisinopril in older adults with mild cognitive impairment (MCI).
This randomized clinical trial included participants aged 55 years or older with MCI and hypertension. Individuals were withdrawn from prior antihypertensive therapy and randomized in a 1 to 1 ratio to candesartan or lisinopril from June 2014 to December 2018. Participants underwent cognitive assessments at baseline and at 6 and 12 months. Brain magnetic resonance images were obtained at baseline and 12 months. This intent-to-treat study was double-blind and powered for a sample size accounting for 20% dropout. Data were analyzed from May to October 2019.
Escalating doses of oral candesartan (up to 32 mg) or lisinopril (up to 40 mg) once daily. Open-label antihypen the primary outcome of executive function measured by Trail Making Test Part B (effect size [ES] = -12.8 [95% CI, -22.5 to -3.1]) but not Executive Abilities Measures and Instruments for Neurobehavioral Evaluation and Research score (ES = -0.03 [95% CI, -0.08 to 0.03]). Candesartan was also superior to lisinopril on the secondary outcome of Hopkins Verbal Learning Test-Revised delayed recall (ES = 0.4 [95% CI, 0.02 to 0.8]) and retention (ES = 5.1 [95% CI, 0.7 to 9.5]).
These findings suggest that in older adults with MCI, 1-year treatment with candesartan had superior neurocognitive outcomes compared with lisinopril. These effects are likely independent of the BP-lowering effect of candesartan.
ClinicalTrials.gov Identifier NCT01984164.
ClinicalTrials.gov Identifier NCT01984164.
There is little evidence regarding how total costs of care associated with an emergency department (ED) visit have changed, despite increasing policy focus on the value of acute care.
To examine trends in total standardized 30-day costs of care associated with an ED visit.
This cross-sectional study of 14 113 088 ED visits at 4730 EDs from 2011 to 2016 included a 20% national sample of traditional Medicare beneficiaries aged 65 years and older. Data analysis was conducted from August 2018 to April 2020.
Time (year) as a continuous variable.
Trends in disposition from the ED and 30-day total standardized costs for all ED visits as well as the following spending components index visit cost, physician costs, subsequent ED visit costs, subsequent inpatient costs, subsequent observation costs, non-ED outpatient care, postacute care, and aggregated total spending after the index ED visit.
The analytic sample consisted of 14 113 088 ED visits at 4730 EDs. The mean (SD) beneficiary age was 78.6 (8.6) year001).
In this study, total 30-day standardized costs of ED care for Medicare beneficiaries decreased in recent years. It may be that more intensive ED spending up front is associated with reductions in total costs of an acute episode.
In this study, total 30-day standardized costs of ED care for Medicare beneficiaries decreased in recent years. It may be that more intensive ED spending up front is associated with reductions in total costs of an acute episode.
Anaplastic thyroid carcinoma (ATC) historically has a 4-month median overall survival (OS) from time of diagnosis, with disease-specific mortality approaching 100%. The association between recent major advancements in treatment and OS has yet to be evaluated.
To evaluate rates of OS in patients with ATC over the last 2 decades.
Retrospective cohort study in a single tertiary care institution. Patients with histopathological confirmation of ATC from January 2000 to October 2019 were included and divided into 3 groups according to date of presentation 2000-2013, 2014-2016, and 2017-2019.
Overall survival compared among different treatment eras and differing therapies, including targeted therapy, immunotherapy, and surgery.
Of 479 patients (246 men [51%]; median age, 65.0 [range, 21.1-92.6] years) with ATC evaluated, 52 (11%) were stage IVA, 172 (36%) stage IVB, and 255 (53%) stage IVC at presentation. selleckchem The median OS of the entire cohort was 0.79 years (9.5 months), ranging from 0.01 to 16.63. The OS atificant increase in survival. The era of untreatable ATC is progressively being replaced by molecular-based personalized therapies, with integration of multidisciplinary therapies including surgery and radiation therapy.
In this large single-institution cohort study spanning nearly 20 years, changes in patient management appear to be associated with significant increase in survival. The era of untreatable ATC is progressively being replaced by molecular-based personalized therapies, with integration of multidisciplinary therapies including surgery and radiation therapy.Nucleic acid-binding proteins of the Sac10b family, also known as Alba, are widely distributed in Archaea. However, the physiological roles of these proteins have yet to be clarified. Here, we show that Sis10b, a member of the Sac10b family from the hyperthermophilic archaeon Sulfolobus islandicus, was active in RNA strand exchange, duplex RNA unwinding in vitro and RNA unfolding in a heterologous host cell. This protein exhibited temperature-dependent binding preference for ssRNA over dsRNA and was more efficient in RNA unwinding and RNA unfolding at elevated temperatures. Notably, alanine substitution of a highly conserved basic residue (K) at position 17 in Sis10b drastically reduced the ability of this protein to catalyse RNA strand exchange and RNA unwinding. Additionally, the preferential binding of Sis10b to ssRNA also depended on the presence of K17 or R17. Furthermore, normal growth was restored to a slow-growing Sis10b knockdown mutant by overproducing wild-type Sis10b but not by overproducing K17A in this mutant strain. Our results indicate that Sis10b is an RNA chaperone that likely functions most efficiently at temperatures optimal for the growth of S. islandicus, and K17 is essential for the chaperone activity of the protein.
The coronavirus disease 2019 (COVID-19) pandemic has forced oncology clinicians and administrators in the United States to set priorities for cancer care owing to resource constraints. As oncology practices adapt to a contracted health care system, expertise gained from partnerships in low-resource settings can be used for guidance. This article provides a primer on priority setting in oncology and ethical guidance based on lessons learned from experience with cancer care priority setting in low-resource settings.
Lessons learned from real-world experiences are myriad. First, in the setting of limited resources, a utilitarian approach to maximizing survival benefit should guide decision-making. Second, conflicting principles will often arise among stakeholders and decision makers. Third, fair decision-making procedures should be established to ensure moral legitimacy and accountability. Fourth, proactive safeguards must be implemented to protect vulnerable individuals, or disparities in cancer treatment arameworks and lessons learned from real-world cancer care priority setting in resource-constrained environments.Despite calls for evaluation practice to take a complex systems approach, there are few examples of how to incorporate complexity into real-life evaluations. This article presents the case for using a complex systems approach to evaluate a school-based intimate partner violence-prevention intervention. We conducted a post hoc analysis of qualitative evaluation data to examine the intervention as a potential system disruptor. We analysed data in relation to complexity concepts particularly relevant to schools 'diverse and dynamic agents', 'interaction', 'unpredictability', 'emergence' and 'context dependency'. The data-two focus groups with facilitators and 33 repeat interviews with 14-17-year-old students-came from an evaluation of a comprehensive sexuality education intervention in Mexico City, which serves as a case study for this analysis. The findings demonstrate an application of complex adaptive systems concepts to qualitative evaluation data. We provide examples of how this approach can shed light on th they are implemented to address intractable societal problems.
Homepage: https://www.selleckchem.com/products/gw0742.html
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