Search results for "miR"
showing 10 items of 1117 documents
The burden of hepatocellular carcinoma in non-alcoholic fatty liver disease: Screening issue and future perspectives
2019
In recent decades, non-alcoholic fatty liver disease (NAFLD) has become the most common liver disease in the Western world, and the occurrence of its complications, such as hepatocellular carcinoma (HCC), has rapidly increased. Obesity and diabetes are considered not only the main triggers for the development of the disease, but also two independent risk factors for HCC. Single nucleotide polymorphisms (such as PNPLA3, TM6SF2 and MBOAT7) are related to the susceptibility to the development of HCC and its progression. Therefore, an appropriate follow-up of these patients is needed for the early diagnosis and treatment of HCC. To date, international guidelines recommend the use of ultrasonogr…
Phase II study of irinotecan in combination with temozolomide (TEMIRI) in children with recurrent or refractory medulloblastoma: a joint ITCC and SIO…
2013
BackgroundThis multicenter phase II study investigated temozolomide + irinotecan (TEMIRI) treatment in children with relapsed or refractory medulloblastoma.MethodsPatients received temozolomide 100–125 mg/m2/day (days 1–5) and irinotecan 10 mg/m2/day (days 1–5 and 8–12) every 3 weeks. The primary endpoint was tumor response within the first 4 cycles confirmed ≥4 weeks and assessed by an external response review committee (ERRC). In a 2-stage Optimum Simon design, ≥6 responses in the first 15 evaluable patients were required within the first 4 cycles for continued enrollment; a total of 19 responses from the first 46 evaluable patients was considered successful.ResultsSixty-six patients were…
Early detection of lung cancer in exhaled breath condensate using miRNA markers
2015
Background: Lung cancer is the leading cause of death by cancer worldwide. Since 5-year survival rate increases significantly when lung cancer is diagnosed at early stages, the development of accurate non-invasive biomarkers for early lung cancer diagnosis is of utmost importance. Over the last years, several tumour biomarkers based on microRNAs (miRNAs) determined in exhaled breath condensate (EBC) have been evaluated and could be applied to early diagnosis of lung cancer. Rationale: miRNA signatures for surgical specimens of lung cancer have been determined providing a panel of differentially expressed miRNAs that were able to discriminate lung cancer patients from normal subjects. Using …
Orfeo o Tamiri? Cantori traci in Sicilia
2009
Orpheus and Thamyris are connected on the literary and iconographic levels, but reveal several divergencies as well. On an early Sicilian krater and an early Paestan hydria from Selinous, the depictions of Orpheus and Thamyris respectively allow us to reconsider the significance of the two singers as symbol of the Thracian music, in the Sicilian context and evaluate the use of these figurative subjects on Sicilian vases. The identity of the two musicians is not clearcut; the focal point is the music, in particular the Thracian, which acquires a divine and regenerating value in relation to the theme of the Underworld.
Gli strumenti musicali di Palazzo Mirto. Storia, tecnologia, restauro
2011
Il volume illustra le peculiarità costruttive e le vicende inerenti la storia dei pregevoli strumenti musicali custoditi presso il Museo Regionale di Palazzo Mirto (Palermo) che, nel 2011, sono stati oggetto di un intervento di restauro funzionale. La collezione include due orologi musicali francesi della fine del XVIII secolo, un raro organo a cilindro del viennese Anton Beyer (Napoli, 1840 ca.), un pianoforte a coda di Mathias Jakesch (Vienna, 1827 ca.), un pianoforte a coda della fabbrica Pleyel Wolff et Compagnie (Parigi, 1858), un pianoforte verticale della manifattura Koelliker & Grammer (Zurigo, 1870 ca.).
Papel de NF-κB Y miRNA-34a en la patogénesis de la osteoartritis y como posible diana de las nuevas terapias biológicas
2015
Introducción: La artrosis es un proceso degenerativo articular que presenta una elevada prevalencia y que es un claro ejemplo de enfermedad de etiología compleja que resulta de la interacción de factores adquiridos con una predisposición hereditaria. NF-κB es un complejo proteico que controla la transcripción del ADN y que está implicado en la respuesta celular frente a diversos estímulos como el estrés, las citoquinas, o antígenos bacterianos o virales. Los microRNAs son pequeños RNAs no codificantes que regulan la expresión génica mediante la inhibición de RNA mensajeros . En la última década se han convertido en una diana de estudio los mecanismos epigenéticos que actúan en los procesos …
miR-205-5p-mediated downregulation of ErbB/HER receptors in breast cancer stem cells results in targeted therapy resistance
2015
AbstractThe ErbB tyrosine kinase receptor family has been shown to have an important role in tumorigenesis, and the expression of its receptor members is frequently deregulated in many types of solid tumors. Various drugs targeting these receptors have been approved for cancer treatment. Particularly, in breast cancer, anti-Her2/EGFR molecules represent the standard therapy for Her2-positive malignancies. However, in a number of cases, the tumor relapses or progresses thus suggesting that not all cancer cells have been targeted. One possibility is that a subset of cells capable of regenerating the tumor, such as cancer stem cells (CSCs), may not respond to these therapeutic agents. Accumula…
A “Lymphocyte MicroRNA Signature” as Predictive Biomarker of Immunotherapy Response and Plasma PD-1/PD-L1 Expression Levels in Patients with Metastat…
2020
Introduction of checkpoint inhibitors resulted in durable responses and improvements in overall survival in advanced RCC patients, but the treatment efficacy is widely variable, and a considerable number of patients are resistant to PD-1/PD-L1 inhibition. This variability of clinical response makes necessary the discovery of predictive biomarkers for patient selection. Previous findings showed that the epigenetic modifications, including an extensive microRNA-mediated regulation of tumor suppressor genes, are key features of RCC. Based on this biological background, we hypothesized that a miRNA expression profile directly identified in the peripheral lymphocytes of the patients before and a…
Phylogenomics of species from four genera of New World monkeys by flow sorting and reciprocal chromosome painting
2007
Abstract Background The taxonomic and phylogenetic relationships of New World monkeys (Platyrrhini) are difficult to distinguish on the basis of morphology and because diagnostic fossils are rare. Recently, molecular data have led to a radical revision of the traditional taxonomy and phylogeny of these primates. Here we examine new hypotheses of platyrrhine evolutionary relationships by reciprocal chromosome painting after chromosome flow sorting of species belonging to four genera of platyrrhines included in the Cebidae family: Callithrix argentata (silvered-marmoset), Cebuella pygmaea (pygmy marmoset), Callimico goeldii (Goeldi's marmoset) and Saimiri sciureus (squirrel monkey). This is t…
Science and news articles on mirror neurons: two degrees of popularization
2012
The paper deals with the linguistic strategies used by authors with a different degree of specialised expertise (scientists, experts, science and general journalists) to popularize and re-contextualize the mirror neuron discovery in the online Scientific American and New York Times versions. In particular, aiming at a comparison between the two journals, the authors focused on those linguistic and interdiscoursive strategies adopted to popularize three main aspects for each article: the definition of mirror neurons, the explanation of their activation in the brain and their function in social interaction.