111 research outputs found
Історія України в джерелознавчих дослідженнях З. Анусіка
Рецензія на монографію: Zbigniew Anusik, Studia i szkice staropolskie, Łódź 2011, Wydawnictwo Uniwersytetu Łódzkiego, s. 853 (Збігнев Анусік. Старопольські дослідження і нариси (Лодзь, 2011)
Chromosome number of the potato cyst nematode Globodera rostochiensis
Le nombre de chromosome de #Globodera rostochiensis$ a été déterminé par l'analyse de leurs configurations bivalentes au stade métaphase I, de cellules au stade de réduction méiotique pendant l'oogenèse, et de cellules en mitose somatique au cours de divisions embryonnaires prématurées. Le nombre de chromosomes diploïde est 2 n = 18. L'utilisation du fluorochrome Hoechst 33528 a facilité la détermination du nombre de chromosomes dans les globules polaires. Les premières divisions ont été observées en utilisant une méthode d'écrasement améliorée. (Résumé d'auteur
Integration of Phytochrome and Cryptochrome Signals Determines Plant Growth during Competition for Light.
Plants in dense vegetation perceive their neighbors primarily through changes in light quality. Initially, the ratio between red (R) and far-red (FR) light decreases due to reflection of FR by plant tissue well before shading occurs. Perception of low R:FR by the phytochrome photoreceptors induces the shade avoidance response [1], of which accelerated elongation growth of leaf-bearing organs is an important feature. Low R:FR-induced phytochrome inactivation leads to the accumulation and activation of the transcription factors PHYTOCHROME-INTERACTING FACTORs (PIFs) 4, 5, and 7 and subsequent expression of their growth-mediating targets [2, 3]. When true shading occurs, transmitted light is especially depleted in red and blue (B) wavelengths, due to absorption by chlorophyll [4]. Although the reduction of blue wavelengths alone does not occur in nature, long-term exposure to low B light induces a shade avoidance-like response that is dependent on the cryptochrome photoreceptors and the transcription factors PIF4 and PIF5 [5-7]. We show in Arabidopsis thaliana that low B in combination with low R:FR enhances petiole elongation similar to vegetation shade, providing functional context for a low B response in plant competition. Low B potentiates the low R:FR response through PIF4, PIF5, and PIF7, and it involves increased PIF5 abundance and transcriptional changes. Low B attenuates a low R:FR-induced negative feedback loop through reduced gene expression of negative regulators and reduced HFR1 levels. The enhanced response to combined phytochrome and cryptochrome inactivation shows how multiple light cues can be integrated to fine-tune the plant's response to a changing environment
Hospedabilidade de plantas melhoradoras de solo à Rotylenchulus reniformis Linford e Oliveira (1940)
Efficacy of halopeRIdol to decrease the burden of Delirium In adult Critically ill patiEnts (EuRIDICE): study protocol for a prospective randomised multi-centre double-blind placebo-controlled clinical trial in the Netherlands
Introduction Delirium in critically ill adults is associated
with prolonged hospital stay, increased mortality and
greater cognitive and functional decline. Current practice
guideline recommendations advocate the use of nonpharmacological strategies to reduce delirium. The
routine use of scheduled haloperidol to treat delirium is
not recommended given a lack of evidence regarding its
ability to resolve delirium nor improve relevant short-term
and longer-term outcomes. This study aims to evaluate
the efficacy and safety of haloperidol for the treatment of
delirium in adult critically ill patients to reduce days spent
with coma or delirium.
Methods and analysis EuRIDICE is a prospective, multicentre, randomised, double-blind, placebo-controlled
trial. Study population consists of adult intensive care
unit (ICU) patients without acute neurological injury who
have delirium based on a positive Intensive Care Delirium
Screening Checklist (ICDSC) or Confusion Assessment
Method for the ICU (CAM-ICU) assessment. Intervention
is intravenous haloperidol 2.5mg (or matching placebo)
every 8 hours, titrated daily based on ICDSC or CAMICU positivity to a maximum of 5mg every 8 hours,
until delirium resolution or ICU discharge. Main study
endpoint is delirium and coma-free days (DCFD) up
to 14 days after randomisation. Secondary endpoints
include (1) 28-day and 1-year mortality, (2) cognitive and
functional performance at 3 and 12 months, (3) patient
and family delirium and ICU experience, (4) psychological
sequelae during and after ICU stay, (4) safety concerns
associated with haloperidol use and (5) cost-effectiveness.
Differences in DCFDs between haloperidol and placebo
group will be analysed using Poisson regression analysis.
Study recruitment started in February 2018 and continues.
Ethics and dissemination The study has been approved
by the Medical Ethics Committee of the Erasmus University
Medical Centre Rotterdam (MEC2017-511) and by the
Institutional Review Boards of the participating sites. Its
results will be disseminated via peer-reviewed publication
and conference presentations
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