55 research outputs found
Electrocardiographic changes in hiatal hernia: a case report
We describe the case of a 78-year-old woman admitted to our department for suspected silent myocardial ischaemia with the evidence of T wave inversion in anterior lead. All the instrumental exams excluded inducible myocardial ischaemia. A gastroscopy showed a moderate hiatal hernia. We postulate that electrocardiogram modification could be attributed to hiatal hernia
Mitochondrial dysfunction in Parkinsonian mesenchymal stem cells impairs differentiation
Sporadic cases account for 90-95% of all patients with Parkinson's Disease (PD). Atypical Parkinsonism comprises approximately 20% of all patients with parkinsonism. Progressive Supranuclear Palsy (PSP) belongs to the atypical parkinsonian diseases and is histopathologically classified as a tauopathy. Here, we report that mesenchymal stem cells (MSCs) derived from the bone marrow of patients with PSP exhibit mitochondrial dysfunction in the form of decreased membrane potential and inhibited NADH-dependent respiration. Furthermore, mitochondrial dysfunction in PSP-MSCs led to a significant increase in mitochondrial ROS generation and oxidative stress, which resulted in decrease of major cellular antioxidant GSH. Additionally, higher basal rate of mitochondrial degradation and lower levels of biogenesis were found in PSP-MSCs, together leading to a reduction in mitochondrial mass. This phenotype was biologically relevant to MSC stemness properties, as it heavily impaired their differentiation into adipocytes, which mostly rely on mitochondrial metabolism for their bioenergetic demand. The defect in adipogenic differentiation was detected as a significant impairment of intracellular lipid droplet formation in PSP-MSCs. This result was corroborated at the transcriptional level by a significant reduction of PPARÎł and FABP4 expression, two key genes involved in the adipogenic molecular network. Our findings in PSP-MSCs provide new insights into the etiology of 'idiopathic' parkinsonism, and confirm that mitochondrial dysfunction is important to the development of parkinsonism, independent of the type of the cell
A New COL3A1 Mutation in Ehlers-Danlos Syndrome Vascular Type with Different Phenotypes in the Same Family
Vascular Ehlers-Danlos syndrome (vEDS) is a rare and severe connective tissue disorder caused by mutations in the collagen type III alpha I chain (COL3A1) gene. We describe a pathogenetic heterozygous COL3A1 mutation c.3140 G>A, p. Gly1047Asp, identified using next-generation sequencing, in a 40-year-old Italian female. The genetic test performed on her relatives, which present different clinical phenotypes, confirmed that they carry the same mutation in heterozygous state. This finding confirms that mutations causing vEDS have an incomplete penetrance
Fighting viral infections and virus-driven tumors with cytotoxic CD4+ T cells
CD4+ T cells have been and are still largely regarded as the orchestrators of immune responses, being able to differentiate into distinct T helper cell populations based on differentiation signals, transcription factor expression, cytokine secretion, and specific functions. Nonetheless, a growing body of evidence indicates that CD4+ T cells can also exert a direct effector activity, which depends on intrinsic cytotoxic properties acquired and carried out along with the evolution of several pathogenic infections. The relevant role of CD4+ T cell lytic features in the control of such infectious conditions also leads to their exploitation as a new immunotherapeutic approach. This review aims at summarizing currently available data about functional and therapeutic relevance of cytotoxic CD4+ T cells in the context of viral infections and virus-driven tumors
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Ehlers-Danlos syndrome caused by the c.934C>T, p. Arg312Cys mutation in COL1A1 gene: an Italian family without cardiovascular events
Article retracted by authors
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RETRACTED: Ehlers-Danlos syndrome caused by the c.934C>T, p. Arg312Cys mutation in COL1A1 gene: an Italian family without cardiovascular events
The article entitled “Ehlers-Danlos syndrome caused by the c.934C>T, p. Arg312Cys mutation in COL1A1 gene: an Italian family without cardiovascular events” has been retracted because the description and characterization of the disease in a family may have been previously published. Upon publication of this article we were notified by an author of a study appearing in 2016 in another journal claiming that characteristics and symptoms of the family described closely matched their study, and that the two studies describe the same family. Whereas constituent family members appearing in both articles were not identical (differing by one member), symptoms and diagnoses of each family proband appeared to be consistent in both studies, leading to the editors’ conclusion that it is likely that the same family was being described in two separate articles.The corresponding author of the article in Dermatology Online Journal was informed of this incident, and responded with the assertion that they were unaware of the study published in 2016, and provided no additional information. They further requested that their article be retracted. In light of the available information and author’s request, the editors of Dermatology Online Journal have retracted this article.The original article was published on July15, 2018 and corrected on September 15, 2018.The original article was published on July15, 2018 and corrected on September 15, 2018
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Ehlers-Danlos syndrome caused by the c.934C>T, p. Arg312Cys mutation in COL1A1 gene: an Italian family without cardiovascular events
Article retracted by authors
I processi di appropriazione dei robot internet-connected nel contesto domestico
The appropriation of internet-connected robots in the domestic context
Based on the Italian data from a four country qualitative research (Australia, Belgium, Italy and the UK) carried out with children aged 8-to-10-years-old, the paper analyses the domestication of Cozmo, a social robotic toy. Robotic toys are conceptualised through the lens of the domestication of technology and drawing on the concept of \u201caffordances-in-practice\u201d (Costa, 2018) \u2013 that is, as the ongoing and always situated enactments of the properties of technological artefacts through practices of use-in-context. in order to investigate the digital- material assemblage of the robotic toy, children\u2019s play practices, parents\u2019 and children\u2019s imaginaries of social robots, a child-centred qualitative research has been designed, which involved two family visits and engaged parents and children as co-researchers. Parents were asked to film their children\u2019s interac- tions with Cozmo in between visits, whereas children co-constructed the stoy of Cozmo through the Book Creator app. Findings show how children enact the affordances of Cozmo based on its anthopomorfisation. More specifically, they enact its liveliness (through practices of care such as feeding the robot) and its affective stickiness (through the actualisation of an emotional bond). Less practised, instead, is the affordance of programmability
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