Search results for " natural killer"

Ruolo dell'interazione NK/KIR nella storia naturale delle infezioni virali

2017

Immunological mechanisms involved in the genesis of the immune response against viral infections take into account the activation of both innate adaptative response. Innate immune defenses trigger a rapid local response, which is often sufficient to control viral infection, and promotes the subsequent activation of specific immune defenses. Natural killer (NK) cells that constitute a subpopulation of lymphocyte-related cells are a key factor of innate immune response and play a role in defense against viral infections by killing infected cells or by producing cytokines and interacting with adaptative immune system's cells. Killer immunoglobulin-like receptors (KIRs) regulate the activation …

Cancer Stem Cells: to be or not to be, is that the problem?

2014

Studio dell'infiltrato linfocitario peritumorale e dei linfociti circolanti in pazienti affetti da melanoma cutaneo

2014

I linfociti T γδ sono un gruppo di effettori “natural killer” del sistema immunitario innato che hanno rappresentato un interessante oggetto di studio nel corso degli ultimi anni. Il Dipartimento di Discipline Chirurgiche, Oncologiche ed Odontostomatologiche del Policlinico Universitario di Palermo, da anni attivo nei confronti della ricerca scientifica, ha recentemente condotto uno studio mirato alla conoscenza del potenziale effetto immunoterapeutico di questa popolazione linfocitaria verso i melanomi in stadio avanzato. Sulla base della classificazione della American Joint Committee on Cancer (AJCC) i pazienti affetti da melanoma maligno in stadio IV con neoplasia metastatica hanno una p…

Invariant natural killer T cells treated with rapamycin or transforming growth factor-β acquire a regulatory function and suppress T effector lymphoc…

2015

Invariant natural killer T cells treated with rapamycin or transforming growth factor-β acquire a regulatory function and suppress T effector lymphocytes

Prognostic Factors of Death in 151 Adults With Hemophagocytic Syndrome: Etiopathogenically Driven Analysis.

2018

Objective: To characterize the etiologies and clinical features at diagnosis of patients with hemophagocytic lymphohistiocytosis (HLH) and correlate these baseline features with survival using an etiopathogenically guided multivariable model. Patients and Methods: The Spanish Group of Autoimmune Diseases HLH Study Group, formed in 2013, is aimed at collecting adult patients with HLH diagnosed in internal medicine departments between January 3, 2013, and October 28, 2017. Results: The cohort consisted of 151 patients (91 men; mean age, 51.4 years). After a mean follow-up of 17 months (range, 1-142 months), 80 patients died. Time-to-event analyses for death identified a worse survival curve f…