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Could metabolic syndrome lead to hepatocarcinoma via non-alcoholic fatty liver disease?

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World Journal of Gastroenterology 2014年第28期20卷 9217-9228页

作者： antonella Scalerar Giovanni Tarantino Department of Clinical Medicine and Surgery Federico Ⅱ University Medical School of Naples National Cancer Institute "Pascale Foundation"IRCS

It was estimated that from 2002 to 2008 the risk of developing cancer increased a quarter-fold in men and two-fold in women due to excessive BMI. Obesity, metabolic syndrome and type 2 diabetes mellitus are strictly related and are key pathogenetic factors of non-alcoholic fatty liver disease (NAFLD), the most frequent liver disease worldwide. The most important consequence of the “metabolic epidemics” is the probable rise in the incidence of hepatocarcinoma (HCC), and NAFLD is the major causative factor. Adipose tissue is not merely a storage organ where lipids are preserved as an energy source. It is an active organ with important endocrine, paracrine, and autocrine actions in addition to immune functions. Adipocytes produce a wide range of hormones, cytokines, and growth factors that can act locally in the adipose tissue microenvironment and systemically. In this article, the main roles of insulin growth factor (IGF)-1 and IGF-2 are discussed. The role of IGF-2 is not only confined to HCC, but it may also act in early hepato-carcinogenesis, as pre-neoplastic lesions express IGF-2 mRNA. IGF-1 and IGF-2 interact with specific receptors (IGF-1R and IGF-2R). IGF-1R is over-expressed in in vitro and in animal models of HCC and it was demonstrated that IGF ligands exerted their effects on HCC cells through IGF-1R and that it was involved in the degeneration of pre-neoplastic lesions via an increase in their mitotic activity. Both IGF-2R and TGF β, a growth inhibitor, levels are reduced in human HCC compared with adjacent normal liver tissues. Another key mechanism involves peroxisome proliferator-activated receptor (PPAR)γ. In in vitro studies, PPARγ inhibited various carcinomas including HCC, most probably by regulating apoptosis via the p21, p53 and p27 pathways. Finally, as a clinical consequence, to improve survival, efforts to achieve a “healthier diet” should be promoted by physicians and politicians.

关键词： Hepatocarcinoma Non-alcoholic fatty liver disease Insulin growth factor Peroxisome proliferatoractivated receptor γ Adipokines

Growing and aging of hematopoietic stem cells

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World Journal of Stem Cells 2021年第6期13卷 594-604页

作者： Ion Udroiu antonella Sgura Department of Science Roma Tre UniversityRome 00146Italy

In the hematopoietic system, a small number of stem cells produce a progeny ofseveral distinct lineages. During ontogeny, they arise in the aorta-gonadmesonephrosregion of the embryo and the placenta, afterwards colonise the liverand finally the bone marrow. After this fetal phase of rapid expansion, thenumber of hematopoietic stem cells continues to grow, in order to sustain theincreasing blood volume of the developing newborn, and eventually reaches asteady-state. The kinetics of this growth are mirrored by the rates of telomereshortening in leukocytes. During adulthood, hematopoietic stem cells undergo avery small number of cell divisions. Nonetheless, they are subjected to aging,eventually reducing their potential to produce differentiated progeny. The causalrelationships between telomere shortening, DNA damage, epigenetic changes,and aging have still to be elucidated.

关键词： Bone marrow Fetus Growth and development Hematopoietic stem cells Leukemia Liver

Notes for developing a molecular test for the full characterization of circulating tumor cells

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Chinese Journal of Cancer Research 2015年第5期27卷 471-478页

作者： Elisabetta Rossi antonella Facchinetti Rita Zamarchi Department of Surgery Oncology and GastroenterologyOncology SectionUniversity of Padova IOV-IRCCS

The proved association between the circulating tumor cell （CTC） levels and the patients＇ survival parameters has been growing interest to investigate the molecular profile of these neoplastic cells among which hide out precursors capable of initiating a new distant metastatic lesion. The full characterization of the tumor cells in peripheral blood of cancer patients is expected to be of help for understanding and （prospectively） for counteracting the metastatic process. The major hitch that is hampering the successful gaining of this result is the lack of a consensus onto standard operating procedures （SOPs） for performing what we generally define as the ＂liquid biopsy＂. Here we review the more recent acquisitions in the analysis of CTCs and tumor related nucleic acids, looking to the main open questions that are hampering their definitive employ in the routine clinical practice.

关键词： Circulating tumor cells (CTCs) single-cell analysis liquid biopsy

The coexistence of fast and slow diffusion processes in the life cycle of Aedes aegypti mosquitoes

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International Journal of Biomathematics 2021年第1期14卷 73-103页

作者： antonella Lupica Annunziata Palumbo Engineering School DEIm DepartmentUniversity of TusciaLargo dell’Università01100 ViterboItaly

A new model that describes the life cycle of mosquitoes of the species Aedes aegypti,main carriers of vector-borne diseases,is *** novelty is to include in the model the coexistence of two independent diffusion processes,one fast which obeys the constitutive Fick’s law,the other slow which satisfies the Cattaneo evolution *** analysis of the corresponding ODE model shows the overall stability of the Mosquitoes-Free Equilibrium(MFE),together with the local stability of the other equilibrium point admitted by the *** wave type solutions have been investigated,providing an estimate of the minimal speed for which there are monotone waves that connect the homogeneous equilibria allowed by the system.A special section is dedicated to the analysis of the hyperbolic model obtained neglecting the fast diffusive *** particular case is suitable to describe the biological process as it overcomes the paradox of infinite speed propagation,typical of parabolic *** numerical simulations compare the existing models in the literature with those presented in this discussion,showing that although the generalized model is parabolic,the associated wave velocity admits upper bound represented by the speed of the waves linked to the classic parabolic model present in the published literature,so the presence of a slow flux together with a fast one slows down the speed with which a population spreads.

关键词： Population growth reaction-diffusion equation stability traveling wave

A novel mind-set in primate experimentation:Implications for primate welfare

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Animal Models and Experimental Medicine 2021年第4期4卷 343-350页

作者： antonella Tramacere Atsushi Iriki Department of Linguistic and Cultural Evolution Max Planck Institute for the Science of Human HistoryJenaGermany Department of Philosophy and Communication Studies University of BolognaBolognaItaly Laboratory of Symbolic Cognitive Development Riken Brain Science InstituteTokyoJapan

We emphasize the importance of studying the primate brain in cognitive neuroscience and suggest a new mind-set in primate experimentation within the boundaries of animal welfare ***,we list the advantages of investigating both genes and neural mechanisms and processes in the emergence of behavioral and cognitive functions,and propose the establishment of an open field of primate *** latter may be conducted by implementing and harmonizing experimental practices with ethical guidelines that regulate(1)management of natural parks with free-moving populations of target nonhuman primates,(2)establishment of indoor-outdoor labs for both system genetics and neuroscience investigations,and(3)hotel space and technologies which remotely collect and dislocate information regarding primates geographically located elsewhere.

关键词： animal models cognitive neuroscience natural parks neuropsychiatry primate experimentation primate welfare Research Domain Criteria

Protective potential of glucagon like peptide 2(GLP-2) against the neurodegeneration

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Neural Regeneration Research 2019年第11期14卷 1901-1902页

作者： antonella Amato Flavia Mulè Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF) Università di Palermo

Neurodegeneration consists in loss of neuron specific types, pattern and distribution, leading to progressive dysfunctions of the central nervous system. Neurodegenerative diseases include diverse pathological conditions, among which Alzheimer’s and Parkinson’s diseases are the most prevalent ones. Alzheimer’s disease is known as a growing dementia, characterized by progressive language, memory, and cognitive loss, while Parkinson’s disease is primarily characterized as a motor disorder. Senile plaques, caused by amyloid β peptide, hyperphosphorylated taubased neurofibrillary tangles and synapse loss, are the principal pathological hallmarks of Alzheimer’s disease.

关键词： Protective potential glucagon like peptide 2(GLP-2) neurodegeneration

Groups with Cyclic Outer Automizers

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Algebra Colloquium 2014年第3期21卷 381-398页

作者： Maria Rosaria Celentani Giovanni Cutolo antonella Leone Dipartimento di Matematica e Applieazioni 'R .Caccioppoli' Universita degli Studi di Napoli 'Federico II' Via Cintia Monte S. Angelo 1-80126 Napoli Italy

We consider groups G such that NG（H）/HCG（H） is cyclic for all H ≤ G. More specifically, we characterise locally nilpotent and supersoluble groups with this property.

关键词： automizers locally nilpotent supersoluble soluble groups

Functional proteomics of adenosine triphosphatase system in the rat striatum during aging

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Neural Regeneration Research 2012年第1期7卷 6-12页

作者： Roberto Federico Villa Federica Ferrari antonella Gorini Department of Forensic Medicine and Pharmacological-Toxicological Sciences Division of Pharmacological and Toxicological Sciences Laboratory of Pharmacology and Molecular Medicine of Central Nervous System University of Pavia

The maximum rates of adenosine triphosphatase （ATPase） systems related to energy consumption were systematically evaluated in synaptic plasma membranes isolated from the striata of male Wistar rats aged 2, 6, 12, 18, and 24 months, because of their key role in presynaptic nerve ending homeostasis. The following enzyme activities were evaluated： sodium-potassium-magnesium adenosine triphosphatase （Na^＋, K^＋, Mg^2＋-ATPase）; ouabain-insensitive magnesium adenosine triphosphatase （Mg^2＋-ATPase）; sodium-potassium adenosine triphosphatase （Na^＋, K^＋-ATPase）; direct magnesium adenosine triphosphatase （Mg^2＋-ATPase）; calcium-magnesium adenosine triphosphatase （Ca^2＋, Mg^2＋-ATPase）; and acetylcholinesterase. The results showed that Na~, K＋-ATPase decreased at 18 and 24 months, Ca^2＋, Mg^2＋-ATPase and acetylcholinesterase decreased from 6 months, while Mg^2＋-ATPase was unmodified. Therefore, ATPases vary independently during aging, suggesting that the ATPase enzyme systems are of neuropathological and pharmacological importance. This could be considered as an experimental model to study regeneration processes, because of the age-dependent modifications of specific synaptic plasma membranes. ATPases cause selective changes in some cerebral functions, especially bioenergetic systems. This could be of physiopathological significance, particularly in many central nervous system diseases, where, during regenerative processes, energy availability is essential.

关键词： ATPase synaptic plasma membranes aging striatum functional proteomics

How Plants Cope with Cadmium: Staking All on Metabolism and Gene Expression

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Journal of Integrative Plant Biology 2008年第10期50卷 1268-1280页

作者： Giovanni DalCorso Silvia Farinati Silvia Maistri antonella Furini Dipartimento Scientifico e Tecnologico Universita` degli Studi di Verona Strada Le Grazie 15 37134 Verona Italy

Environmental pollution is one of the major problems for human health. Toxic heavy metals are normally present as soil constituents or can also be spread out in the environment by human activity and agricultural techniques. Soil contamination by heavy metals as cadmium, highlights two main aspects： on one side they interfere with the life cycle of plants and therefore reduce crop yields, and on the other hand, once adsorbed and accumulated into the plant tissues, they enter the food chain poisoning animals and humans. Considering this point of view, understanding the mechanism by which plants handle heavy metal exposure, in particular cadmium stress, is a primary goal of plant-biotechnology research or plant breeders whose aim is to create plants that are able to recover high amounts of heavy metals, which can be used for phytoremediation, or identify crop varieties that do not accumulate toxic metal in grains or fruits. In this review we focus on the main symptoms of cadmium toxicity both on root apparatus and shoots. We elucidate the mechanisms that plants activate to prevent absorption or to detoxify toxic metal ions, such as synthesis of phytochelatins, metallothioneins and enzymes involved in stress response. Finally we consider new plant-biotechnology applications that can be applied for phytoremediation.

关键词： cadmium heavy metals metallothioneins phytochelatins phytoremediation transporters.