Reconfigurable Microfluidic Magnetic Valve Arrays: Towards a Radiotherapy-Compatible Spheroid Culture Platform for the Combinatorial Screening of Cancer Therapies.

We introduce here a microfluidic cell culture platform or spheroid culture chamber array (SCCA) that can synthesize, culture, and enable fluorescence imaging of 3D cell aggregates (typically spheroids) directly on-chip while specifying the flow of reagents in each chamber via the use of an array of passive magnetic valves. The SCCA valves demonstrated sufficient resistance to burst (above 100 mBar), including after receiving radiotherapy (RT) doses of up to 8 Gy combined with standard 37 °C incubation for up to 7 days, enabling the simultaneous synthesis of multiple spheroids from different cell lines on the same array. Our results suggest that SCCA would be an asset in drug discovery processes, seeking to identify combinatorial treatments.

Recommendations for patient-centered emergency care.

INTRODUCTION: Patient-centred care is more than just an aspiration, it represents a fundamental shift in the way healthcare must be delivered. Patient-centred emergency care is important for improving the patient and clinician experience and is essential for optimizing health outcomes. Creating a patient-centred emergency department emphasizes the importance of the patient's experience, preferences, and values. METHODS: To formulate recommendations for patient-centred care, we synthesized a literature review, stakeholder interviews, consensus from an expert panel of diverse healthcare professionals and a patient advocate, and reviewed our recommendations for feedback with a presentation at the Canadian Association of Emergency Physicians (CAEP) 2023 Annual Conference Academic Symposium. RESULTS: This paper gives practical recommendations for areas and strategies to improve patient-centredness in Emergency Medicine. It delves into the various dimensions of this approach, including the role of the physical environment, communications and interpersonal interactions, systems of care, and measurement, all of which are essential in providing optimal care to match the patients' needs. CONCLUSION: We seek to inspire a renewed commitment of placing the patient at the heart of emergency care, recognizing that patient-centredness is not merely an option but a fundamental aspect of delivering high quality, compassionate and effective healthcare in the emergency setting. In an era marked by technological advancements and evolving healthcare paradigms, the essence of medicine as a deeply human endeavour is becoming in some ways more possible, if we seize the opportunities.

RéSUMé: INTRODUCTION: Les soins axés sur le patient sont plus qu'une simple aspiration, ils représentent un changement fondamental dans la façon dont les soins de santé doivent être dispensés. Les soins d'urgence axés sur les patients sont importants pour améliorer l'expérience des patients et des cliniciens et sont essentiels pour optimiser les résultats pour la santé. La création d'un service d'urgence axé sur le patient souligne l'importance de l'expérience, des préférences et des valeurs du patient. MéTHODES: Afin de formuler des recommandations pour les soins axés sur les patients, nous avons synthétisé une analyse documentaire, des entrevues avec les intervenants, le consensus d'un comité d'experts composé de divers professionnels de la santé et d'un défenseur des patients. et nous avons examiné nos recommandations en matière de rétroaction lors d'une présentation au colloque universitaire annuel 2023 de l'Association canadienne des médecins d'urgence (ACMU). RéSULTATS: Ce document donne des recommandations pratiques sur les domaines et les stratégies pour améliorer l'orientation des patients en médecine d'urgence. Il examine les diverses dimensions de cette approche, y compris le rôle de l'environnement physique, les communications et les interactions interpersonnelles, les systèmes de soins et la mesure, qui sont tous essentiels pour fournir des soins optimaux afin de répondre aux besoins des patients. CONCLUSION: Nous cherchons à inspirer un engagement renouvelé à placer le patient au cœur des soins d'urgence, reconnaissant que l'orientation du patient n'est pas seulement une option, mais un aspect fondamental de la prestation de soins de santé de haute qualité, compatissants et efficaces en milieu d'urgence. À une époque marquée par les progrès technologiques et l'évolution des paradigmes de la santé, l'essence de la médecine en tant qu'entreprise profondément humaine devient à certains égards plus possible, si nous saisissons les opportunités.

Concomitant symptomatic cardiac sarcoidosis and systemic sclerosis with cardiac involvement: a case report.

Sarcoidosis and systemic sclerosis are two inflammatory multisystemic disorders of unknown etiology that may be life-threatening especially when there is cardiac involvement. Both diseases may coexist, however, there are very few case reports of patients with both cardiac sarcoidosis and systemic sclerosis in the literature. We report the case of a 72-year-old female who was initially referred for dyspnea. A chest computed tomography scan showed multiple hilar and mediastinal adenopathy with a non-specific opacity in the middle pulmonary lobe. FDG-PET-scan showed increased FDG uptake in the adenopathy, the middle lobe and the right ventricular free wall. Sarcoidosis was confirmed with a lung biopsy. Both electrocardiogram and echocardiogram were normal. Four months later, the patient developed a high-grade atrioventricular block deemed secondary to her cardiac sarcoidosis. Two years later, the patient was referred to a rheumatologist for severe Raynaud's symptoms, sclerodactyly and acrocyanosis. After thorough investigations, a diagnosis of limited cutaneous systemic sclerosis with systemic and cardiac sarcoidosis was made. This case demonstrates that both cardiac sarcoidosis and systemic sclerosis may coexist. In the literature, either disease may come first. In cases where cardiac symptoms appear after the diagnosis of concomitant sarcoidosis and systemic sclerosis, it might be difficult for clinicians to confirm which disease is responsible for the heart involvement. This is important since early cardiac sarcoidosis treatment should be done to prevent major complications and may well differ from systemic sclerosis treatment. In this review, we discuss the main clinical manifestations and imaging findings seen with cardiac disease secondary to sarcoidosis and systemic sclerosis.

Utrophin haploinsufficiency does not worsen the functional performance, resistance to eccentric contractions and force production of dystrophic mice.

The lack of dystrophin in Duchenne muscular dystrophy (DMD) compromises the integrity and function of muscle fibers. Skeletal muscles, except the diaphragm, do not undergo progressive degeneration in adult mdx mice due to compensatory mechanisms, including structural protein upregulation. New mouse models, including utrophin haploinsufficient mdx (mdx/utrn+/-) mice, may better recapitulate DMD. Our goal was to determine whether mdx/utrn+/- worsens the mdx phenotype and to characterize the course of the disease on muscle function and contractility at 1, 2, and 5 months of age, which encompass all stages of development relevant to DMD therapy. The functional performances of mdx/utrn+/- mice showed that they are not more affected than mdx/utrn+/+ mice based on downhill treadmill running parameters and subsequent recovery measured by open-field voluntary activity. WT mice ran the entire distance (450 m) on the treadmill, with an additional 561 m during the 4 h of open-field while mdx/utrn+/+ and mdx/utrn+/- mice completed, respectively, 236 m and 273 m on the treadmill and 341 m and 287 m during the open-field period. In addition, isolated ex vivo contractile properties and repeated eccentric contractions showed that mdx/utrn+/- does not significantly worsen the function of dystrophic EDL muscles, which are mainly composed of fast-twitch fibers that are preferentially affected in DMD. Twitch, absolute tetanic, and specific tetanic forces were very similar in dystrophic EDL muscles from mdx/utrn+/+ and mdx utrn+/- mice at 1, 2, and 5 months of age. Five-month-old mdx/utrn+/+ and mdx/utrn+/- mice lost roughly 50% of their force due to repeated eccentric contractions. Thus, histological, morphological, biochemical functional and contractile observations showed that utrophin haploinsufficiency has a very limited impact on mdx mice.