[Admission or non admission of patients with cancer to the ICU]. / Admission ou non-admission du patient oncologique aux soins intensifs.

Determining if a critically ill patient with cancer will benefit from medical care in an intensive care unit can be a real challenge. Studies show that anticipating critical situations in oncology and collaboration between oncologists and intensivists diminish mortality and enhance resource use. This article covers some of the facts to consider in order to improve the management of these patients.

La question du projet thérapeutique et de l'admission ou non aux soins intensifs (SI) d'un patient souffrant d'un cancer et se trouvant en situation critique peut être complexe à appréhender. La décision d'un tel transfert est lourde de conséquences pour les patients et leurs familles, ainsi que pour son coût humain et économique. Il est donc primordial d'avoir une réflexion en amont sur le bien-fondé de chaque transfert. Une concertation régulière impliquant le médecin traitant/l'oncologue et le malade/sa famille tout au long de l'évolution de la maladie permet de clarifier les situations susceptibles de conduire à un transfert en SI.

No extra-adrenal aldosterone production in various human cell lines.

Extra-adrenal de novo aldosterone (Aldo) production has been described inconsistently. Systematic data based upon state-of-the-art technology including validated controls are sparse. We hypothesized that aldosterone synthase (CYP11B2) expression and de novo Aldo production are absent in nonadrenal human cell lines, either immortalized cell lines or commercially available primary cell lines, including peripheral blood mononuclear cells (PBMCs) of individuals without and with primary hyperaldosteronism (PA). CYP11B2-transfected COS-7 and endogenous CYP11B2 expressing adrenal H295R cells served as positive controls. Various well-characterized, purchased, immortalized (BeWo, HEK293, HTR-8/SVneo, JEG-3) and primary (HAEC, HLEC, HRGEC, HRMC, HUAEC, HUVEC, PBMC) cell lines as well as self-isolated PBMCs from PA patients (n = 5) were incubated with the steroid hormone substrates progesterone, deoxycorticosterone, corticosterone or 18-OH-corticosterone with and without Ang II for 24 h to assess CYP11B2 enzymatic activity. CYP11B2 expression was analyzed by real-time PCR and liquid chromatography-mass spectrometry was used to quantify Aldo production. Pronounced CYP11B2 mRNA expression and Aldo production were observed in both positive controls, which followed an incremental time course. Neither substrates alone nor coincubation with Ang II significantly stimulated CYP11B2 expression or Aldo production in various immortalized and primary cell lines and PBMCs of PA patients. These results strongly support the absence of relevant de novo extra-adrenal Aldo production in nonadrenal cells, including blood mononuclear cells, irrespective of the absence or presence of autonomous adrenal Aldo production.