10 research outputs found

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

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    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & NemĂ©sio 2007; Donegan 2008, 2009; NemĂ©sio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Inhibition of Cyclic Adenosine Monophosphate-Specific Phosphodiesterase by Various Food Plant-Derived Phytotherapeutic Agents

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    Background: Phosphodiesterases (PDEs) play a major role in the regulation of cyclic adenosine monophosphate (cAMP)- and cyclic guanosine monophosphate (cGMP)-mediated pathways. Their inhibitors exhibit anti-inflammatory, vasodilatory and antithrombotic effects. Therefore, consumption of foods with PDE-inhibiting potential may possess beneficial influence on the risk of cardiovascular diseases. Methods: Four plant extracts (Arbutus unedo, Camellia sinensis, Cynara scolymus, Zingiber officinale) with promising ingredient profiles and physiological effects were tested for their ability to inhibit cAMP-specific PDE in vitro in a radioactive assay. Results: Strawberry tree fruit (Arbutus unedo) and tea (Camellia sinensis) extracts did not inhibit PDE markedly. Alternatively, artichoke (Cynara scolymus) extract had a significant inhibitory influence on PDE activity (IC50 = 0.9 ± 0.1 mg/mL) as well as its flavone luteolin (IC50 = 41 ± 10 ΌM) and 3,4-dicaffeoylquinic acid (IC50 > 1.0 mM). Additionally, the ginger (Zingiber officinale) extract and one of its constituents, [6]-gingerol, significantly inhibited PDE (IC50 = 1.7 ± 0.2 mg/mL and IC50 > 1.7 mM, respectively). Crude fractionation of ginger extract showed that substances responsible for PDE inhibition were in the lipoid fraction (IC50 = 455 ± 19 Όg/mL). Conclusions: A PDE-inhibitory effect was shown for artichoke and ginger extract. Whether PDE inhibition in vivo can be achieved through ingestion of artichoke or ginger extracts leading to physiological effects concerning cardiovascular health should be addressed in future research

    Sustained Human Background Exposure to Acrolein Evidenced by Monitoring Urinary Exposure Biomarkers

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    Scope This study investigates a potential correlation between the intake of heat-processed food and the excretion of the acrolein (AC) biomarkers N-acetyl-S-(3-hydroxypropyl)-l-cysteine (HPMA) and N-acetyl-S-(carboxyethyl)-l-cysteine (CEMA) based on two human studies. Methods and Results Human exposure to AC is monitored using the AC-related mercapturic acids HPMA and CEMA in the urine of a) non-smoking volunteers under defined living conditions and b) of non-smoking volunteers on unrestricted or vegan diet under free living conditions. Free living volunteers in part show markedly enhanced urinary excretions of HPMA and CEMA. The intake of heat-processed food does not influence AC-related biomarker excretion. Incidentally enhanced urinary exposure biomarker levels appear to suggest AC exposure possibly from open fire, barbecuing, or tobacco smoke. However, kinetics of urinary biomarkers related to tobacco and other potential smoke exposure, do not correlate with those observed for HPMA and CEMA. Conclusion This study is the first to convincingly show a sustained and substantial background exposure to AC in non-smoking humans, clearly independent from uptake of heat-processed foods. The data strongly point to endogenous AC generation by pathways of mammalian and/or microbial metabolism as yet not taken into consideration

    Priority Setting and Influential Factors on Acceptance of Pharmaceutical Recommendations in Collaborative Medication Reviews in an Ambulatory Care Setting - Analysis of a Cluster Randomized Controlled Trial (WestGem-Study)

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    Background Medication reviews are recognized services to increase quality of therapy and reduce medication risks. The selection of eligible patients with potential to receive a major benefit is based on assumptions rather than on factual data. Acceptance of interprofessional collaboration is crucial to increase the quality of medication therapy. Objective The research question was to identify and prioritize eligible patients for a medication review and to provide evidence-based criteria for patient selection. Acceptance of the prescribing general practitioner to implement pharmaceutical recommendations was measured and factors influencing physicians' acceptance were explored to obtain an impression on the extent of collaboration in medication review in an ambulatory care setting. Methods Based on data of a cluster-randomized controlled study (WestGem-study), the correlation between patient parameters and the individual performance in a medication review was calculated in a multiple logistic regression model. Physician's acceptance of the suggested intervention was assessed using feedback forms. Influential factors were analyzed. Results The number of drugs in use (p = 0.001), discrepancies between prescribed and used medicines (p = 0.014), the baseline Medication Appropriateness Index score (p0.05) and a low kidney function (p>0.05) do not predetermine the outcome. Longitudinal patient care with repeated reviews showed higher interprofessional acceptance and superior patient benefit. A total of 54.9% of the recommendations in a medication review on drug therapy were accepted for implementation. Conclusions The number of drugs in use and medication reconciliation could be a first rational step in patient selection for a medication review. Most elderly, multimorbid patients with polymedication experience a similar chance of receiving a benefit from a medication review. Longitudinal patient care should be preferred over confined medication reviews. The acceptance of medication reviews by physicians supports further implementation into health care systems

    The 10 Items of the Medication Appropriateness Index [36] and its weighting [37].

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    <p>The 10 Items of the Medication Appropriateness Index [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0156304#pone.0156304.ref036" target="_blank">36</a>] and its weighting [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0156304#pone.0156304.ref037" target="_blank">37</a>].</p
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