Time‐dependent cytotoxic properties of terpyridine‐based copper complexes

Five copper complexes supported by terpyridine ligand were prepared and characterized, viz. [Cu3Cl4(Naphtpy)2][CuCl2] (1), [Cu2Cl2(Naphtpy)2](ClO4)2 (2), [CuCl2(Naphtpy)]2(MeOH)3(H2O) (3), [CuCl2(Cltpy)] (4) and [Cu(Cltpy)2](ClO4)2 (5); (where Naphtpy stands for 4'-((naphthalen-2-yl)methoxy)-2,2′:6′,2′′-terpyridine and Cltpy for 4′-chloro-2,2′:6′,2′′-terpyridine). Their DNA-interaction abilities were investigated, and their cytotoxic behaviors were examined with three cells lines, namely with human ovarian carcinoma cells (A2780) and its derived cisplatin-resistant line (A2780cis), and human cervix adenocarcinoma cells (HeLa). All compounds show good cytotoxic properties (especially after 72 h incubation). Remarkably, two compounds, i.e. 4 and 5, are almost inactive after 24 h (particularly 4), but are highly active after 72 h, with IC50 values in the low micromolar to submicromolar range. Compounds 1 and 2 induce necrosis, whereas late apoptosis is observed with 3−5, 4 exhibiting a behaviour close to that of cisplati

The effect of potential supramolecular-bond promoters on the DNA-interacting abilities of copper-terpyridine compounds.

Three copper(II) coordination compounds have been prepared from three different 2,2′:6′,2′′-terpyridine-based ligands, which have been selected to investigate the potential role of supramolecular interactions on the DNA-interacting and cytotoxicity properties of the corresponding metal complexes. Hence, the ligands 4′-((naphthalen-2-yl)methoxy)-2,2′:6′,2′′-terpyridine (Naphtpy) and 4′-((1H-benzo[d]imidazol-2-yl)methoxy)-2,2′:6′,2′′-terpyridine (Bimztpy) have been synthesized from commercially-available 4′-chloro-2,2′:6′,2′′-terpyridine (Cltpy), and their copper(II) complexes have been obtained by reaction with copper(II) nitrate. The DNA-interacting abilities of the corresponding compounds [Cu(Cltpy)(H2O)(NO3)2] (1), [Cu(naphtpy)(NO3)(H2O)](NO3)(MeOH) (2) and [Cu(bimztpy)(NO3)(H2O)](NO3) (3) have been investigated using different techniques, and cytotoxicity assays with several cancer cell lines have revealed interesting features, viz. the more efficient complex is 2, which although it does not act as a DNA cleaver, displays the most effective DNA-interacting and cytotoxic properties, compared to 1 and 3

Management of anaphylaxis due to COVID-19 vaccines in the elderly

Older adults, especially men and/or those with diabetes, hypertension, and/or obesity, are prone to severe COVID-19. In some countries, older adults, particularly those residing in nursing homes, have been prioritized to receive COVID-19 vaccines due to high risk of death. In very rare instances, the COVID-19 vaccines can induce anaphylaxis, and the management of anaphylaxis in older people should be considered carefully. An ARIA-EAACI-EuGMS (Allergic Rhinitis and its Impact on Asthma, European Academy of Allergy and Clinical Immunology, and European Geriatric Medicine Society) Working Group has proposed some recommendations for older adults receiving the COVID-19 vaccines. Anaphylaxis to COVID-19 vaccines is extremely rare (from 1 per 100,000 to 5 per million injections). Symptoms are similar in younger and older adults but they tend to be more severe in the older patients. Adrenaline is the mainstay treatment and should be readily available. A flowchart is proposed to manage anaphylaxis in the older patients.Peer reviewe

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Un chapiteau du Musée du Louvre provenant de Trapeza

Masson Olivier, Caubet Annie. Un chapiteau du Musée du Louvre provenant de Trapeza. In: Cahiers du Centre d'Etudes Chypriotes. Volume 24, 1995. pp. 19-24

Système de génération automatique de bases de données pour la simulation de situations de conduite fondée sur l'interaction de ses différents acteurs

TOULOUSE3-BU Sciences (315552104) / SudocSudocFranceF

Hyperplasie nodulaire lymphoïde de l'intestin grêle entrainant une malabsorption de vitamine B12 mimant une maladied' Imerslund Najman Grasbeck

BORDEAUX2-BU Santé (330632101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Chapitre 1. Les phases d’occupation

Callot Olivier, Caubet Annie, Fourrier Sabine. Chapitre 1. Les phases d’occupation. In: Kition-Bamboula VI. Le sanctuaire sous la colline. Lyon : Maison de l'Orient et de la Méditerranée Jean Pouilloux, 2015. pp. 35-96. (Travaux de la Maison de l'Orient et de la Méditerranée. Série recherches archéologiques, 67