Publications by authors named "Giammarioli A"

Health inequalities within and between Member States of the European Union are widely recognized as a public health problem as they determine a significant share of potentially avoidable mortality and morbidity. After years of growing awareness and increasing action taken, a large gap still exists across Europe in terms of policy responses and governance. With the aim to contribute to achieve greater equity in health outcomes, in 2018 a new Joint Action, JAHEE, (Joint Action Health Equity Europe) was funded by the third EU Health Programme, with the main goal of strengthening cooperation between participating countries and of implementing concrete actions to reduce health inequalities.

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Background: The Italian National Institute of Health (Istituto Superiore di Sanità, ISS) considers health inequalities (HI) an important area of activity. As the scientific and technical body of the Ministry of Health and the National Health Service, ISS may play a key role to reduce HI. In order to enable ISS in addressing the new and crucial HI challenge, a Research Positioning Exercise was designed and implemented.

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Trimetazidine (TMZ) is a metabolic reprogramming agent able to partially inhibit mitochondrial free fatty acid β-oxidation while enhancing glucose oxidation. Here we have found that the metabolic shift driven by TMZ enhances the myogenic potential of skeletal muscle progenitor cells leading to MyoD, Myogenin, Desmin and the slow isoforms of troponin C and I over-expression. Moreover, similarly to exercise, TMZ stimulates the phosphorylation of the AMP-activated protein kinase (AMPK) and up-regulates the peroxisome proliferator-activated receptor gamma coactivator 1-α (PGC1α), both of which are known to enhance the mitochondrial biogenesis necessary for myoblast differentiation.

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Background: The antimalarial drug Pyrimethamine has been suggested to exert an antitumor activity by inducing apoptotic cell death in cancer cells, including metastatic melanoma cells. However, the dose of Pyrimethamine to be considered as an anticancer agent appears to be significantly higher than the maximum dose used as an antiprotozoal drug.

Methods: Hence, a series of Pyrimethamine analogs has been synthesized and screened for their apoptosis induction in two cultured metastatic melanoma cell lines.

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The increasing proportion of women in the workforce raises a range of gender-related questions about the different effects of work-related risks on men and women. Few studies have characterized gender differences across occupations and industries, although at this time, the gender sensitive approach is starting to acquire relevance in the field of human preventive medicine. The European Agency for Safety and Health at Work has encouraged a policy of gender equality in all European member states.

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Significance: Skeletal muscle is a highly plastic tissue. Exercise evokes signaling pathways that strongly modify myofiber metabolism and physiological and contractile properties of skeletal muscle. Regular physical activity is beneficial for health and is highly recommended for the prevention of several chronic conditions.

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It has recently been demonstrated that trimetazidine (TMZ), an anti-ischemic antianginal agent, is also able to improve exercise performance in patients with peripheral arterial disease. TMZ is a metabolic modulator, and the mechanisms underlying its cytoprotective anti-ischemic activity could be ascribed, at least in cardiomyocytes, to optimization of metabolism. However, regarding the cytoprotection exerted by TMZ on skeletal muscle and allowing the improvement of exercise performance, no information is yet available.

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Fibrotic disorders are multistage progressive processes that often arise from different causes and are commonly associated with chronic inflammation. Excessive deposition of extracellular matrix is the hallmark of many fibrotic diseases. This may be due to an excess of fibroblast recruitment and activation, as well as to their differentiation in myofibroblasts.

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Background: Gender medicine is a multi-faceted field of investigation integrating various aspects of psycho-social and biological sciences but it mainly deals with the impact of the gender on human physiology, pathophysiology, and clinical features of diseases. In Italy, the Decree Law 81/2008 recently introduced the gender issue in the risk assessment at the workplaces.

Aims: This review briefly describes our current knowledge on gender medicine and on the Italian legislation in risk management.

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In 2008 we published the first set of guidelines for standardizing research in autophagy. Since then, research on this topic has continued to accelerate, and many new scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding.

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Aims: The aim of this work was to investigate whether systemic oxidative imbalance that occurs in patients with systemic sclerosis affects red blood cell integrity.

Methods: Reactive oxygen species, intracellular content of total thiols and molecules involved in red blood cell aging (e.g.

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Fibrosis may represent the final step induced by autoimmune mechanism(s). This may be due to the excess in fibroblast recruitment, activation and differentiation in myofibroblasts. These events may be triggered by cytokines, chemokines and growth factors released by lymphocytes or macrophages.

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2-Deoxy-D-glucose (2DG) is a synthetic glucose analogue that inhibits glycolysis and blocks cancer cell growth. In this report, we evaluated the role of 2DG in the induction of cell death in human metastatic melanoma cells. We have also examined the effects of 2DG in combined treatments with four different pro-apoptotic agents: (i) Temozolomide (TMZ), a chemotherapic drug commonly used to treat metastatic melanoma, (ii) Pyrimethamine (Pyr), a pro-apoptotic antifolate drug recently reappraised in cancer therapy, (iii) Cisplatin (CisPt), a drug capable of directly binding to DNA ultimately triggering apoptosis of cancer cells and (iv) the kinase inhibitor Staurosporine (STS), a prototypical inducer of mitochondria-mediated apoptosis.

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We investigated in systemic sclerosis (SSc) patients the T cell homeostasis and its relationship with the clinical course of the disease. Distribution of peripheral T cell subsets, thymic output, lymphocyte proliferation and apoptosis were analyzed by flow cytometry or ELISA. Age inappropriate levels of naive CD4(+) T cells and thymic output were observed.

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Estrogens are well-known regulators of the immune responses. Most of their effects are mediated by two receptors: estrogen receptor (ER)alpha and ERbeta. Up to date the presence of intracellular ER in human immune cells represents a controversial issue, while their surface membrane expression has scarcely been explored.

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We previously found that a directional movement of the raft component GD3 towards mitochondria, by its association with microtubules, was mandatory to late apoptogenic events triggered by CD95/Fas. Since CLIPR-59, CLIP-170-related protein, has recently been identified as a microtubule binding protein associated with lipid rafts, we analyzed the role of GD3-CLIPR-59 association in lymphoblastoid T cell apoptosis triggered by CD95/Fas. To test whether CLIPR-59 could play a role at the raft-microtubule junction, we performed a series of experiments by using immunoelectron microscopy, static or flow cytometry and biochemical analyses.

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Article Synopsis
  • Scientists studied how some cancer cells resist dying and how a substance called interferon-gamma can help make them more likely to die.
  • They found that interferon-gamma makes changes in the cancer cells that help them respond better to a death signal.
  • The research suggests that interferon-gamma might be a useful way to treat brain cancer by making these cells more sensitive to treatments that cause them to die.
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In a previous investigation, we demonstrated that after CD95/Fas triggering, raft-associated GD3 ganglioside, normally localized at the plasma membrane of T cells, can be detected in mitochondria, where they contribute to apoptogenic events. Here, we show the association of the glycosphingolipid GD3 with microtubular cytoskeleton at very early time points following Fas ligation. This was assessed by different methodological approaches, including fluorescence resonance energy transfer, immunoelectron microscopy, and coimmunoprecipitation.

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Diverse forms of cell death have initially been described thanks to their observation at the electron microscope. Morphological and ultrastructural features of necrosis, apoptosis, and autophagy, considered here as prototypic cell death processes, allow one to characterize and quantify early and late cytopathological changes occurring in cells undergoing degeneration. Both light microscopy and scanning electron microscopy can provide useful insights, for example, to quantitatively evaluate cell death or to characterize cell surface changes of the cells, respectively.

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The unresponsiveness of metastatic melanoma to conventional chemotherapeutic and biological agents is largely due to the development of resistance to apoptosis. Pyrimethamine belongs to the group of antifolate drugs, and in addition to antiprotozoan effects, it exerts a strong proapoptotic activity, which we recently characterized in human T lymphocytes. However, no data regarding pyrimethamine anticancer activity are available thus far.

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