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  1. Article ; Online: Functional Foods: An Approach to Modulate Molecular Mechanisms of Alzheimer's Disease.

    Atlante, Anna / Amadoro, Giuseppina / Bobba, Antonella / Latina, Valentina

    Cells

    2020  Volume 9, Issue 11

    Abstract: A new epoch is emerging with intense research on nutraceuticals, i.e., "food or food product that provides medical or health benefits including the prevention and treatment of diseases", such as Alzheimer's disease. Nutraceuticals act at different ... ...

    Abstract A new epoch is emerging with intense research on nutraceuticals, i.e., "food or food product that provides medical or health benefits including the prevention and treatment of diseases", such as Alzheimer's disease. Nutraceuticals act at different biochemical and metabolic levels and much evidence shows their neuroprotective effects; in particular, they are able to provide protection against mitochondrial damage, oxidative stress, toxicity of β-amyloid and Tau and cell death. They have been shown to influence the composition of the intestinal microbiota significantly contributing to the discovery that differential microorganisms composition is associated with the formation and aggregation of cerebral toxic proteins. Further, the routes of interaction between epigenetic mechanisms and the microbiota-gut-brain axis have been elucidated, thus establishing a modulatory role of diet-induced epigenetic changes of gut microbiota in shaping the brain. This review examines recent scientific literature addressing the beneficial effects of some natural products for which mechanistic evidence to prevent or slowdown AD are available. Even if the road is still long, the results are already exceptional.
    MeSH term(s) Alzheimer Disease/etiology ; Alzheimer Disease/metabolism ; Alzheimer Disease/therapy ; Amyloid beta-Peptides/metabolism ; Animals ; Biological Products/pharmacology ; Biomarkers ; Brain/drug effects ; Brain/metabolism ; Brain/pathology ; DNA Methylation ; Diet Therapy ; Dietary Supplements ; Disease Management ; Disease Susceptibility ; Functional Food ; Gastrointestinal Microbiome/drug effects ; Gene Expression Regulation/drug effects ; Humans ; Mitochondria/drug effects ; Mitochondria/genetics ; Mitochondria/metabolism ; Neuroprotective Agents/pharmacology
    Chemical Substances Amyloid beta-Peptides ; Biological Products ; Biomarkers ; Neuroprotective Agents
    Language English
    Publishing date 2020-10-23
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells9112347
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: An Intriguing Involvement of Mitochondria in Cystic Fibrosis.

    Favia, Maria / de Bari, Lidia / Bobba, Antonella / Atlante, Anna

    Journal of clinical medicine

    2019  Volume 8, Issue 11

    Abstract: Cystic fibrosis (CF) occurs when the cystic fibrosis transmembrane conductance regulator (CFTR) protein is not synthetized and folded correctly. The CFTR protein helps to maintain the balance of salt and water on many body surfaces, such as the lung ... ...

    Abstract Cystic fibrosis (CF) occurs when the cystic fibrosis transmembrane conductance regulator (CFTR) protein is not synthetized and folded correctly. The CFTR protein helps to maintain the balance of salt and water on many body surfaces, such as the lung surface. When the protein is not working correctly, chloride becomes trapped in cells, then water cannot hydrate the cellular surface and the mucus covering the cells becomes thick and sticky. Furthermore, a defective CFTR appears to produce a redox imbalance in epithelial cells and extracellular fluids and to cause an abnormal generation of reactive oxygen species: as a consequence, oxidative stress has been implicated as a causative factor in the aetiology of the process. Moreover, massive evidences show that defective CFTR gives rise to extracellular GSH level decrease and elevated glucose concentrations in airway surface liquid (ASL), thus encouraging lung infection by pathogens in the CF advancement. Recent research in progress aims to rediscover a possible role of mitochondria in CF. Here the latest new and recent studies on mitochondrial bioenergetics are collected. Surprisingly, they have enabled us to ascertain that mitochondria have a leading role in opposing the high ASL glucose level as well as oxidative stress in CF.
    Language English
    Publishing date 2019-11-06
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm8111890
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: RTG Signaling Sustains Mitochondrial Respiratory Capacity in HOG1-Dependent Osmoadaptation

    Guaragnella, Nicoletta / Agrimi, Gennaro / Scarcia, Pasquale / Suriano, Clelia / Pisano, Isabella / Bobba, Antonella / Mazzoni, Cristina / Palmieri, Luigi / Giannattasio, Sergio

    Microorganisms. 2021 Sept. 06, v. 9, no. 9

    2021  

    Abstract: Mitochondrial RTG-dependent retrograde signaling, whose regulators have been characterized in Saccharomyces cerevisiae, plays a recognized role under various environmental stresses. Of special significance, the activity of the transcriptional complex ... ...

    Abstract Mitochondrial RTG-dependent retrograde signaling, whose regulators have been characterized in Saccharomyces cerevisiae, plays a recognized role under various environmental stresses. Of special significance, the activity of the transcriptional complex Rtg1/3 has been shown to be modulated by Hog1, the master regulator of the high osmolarity glycerol pathway, in response to osmotic stress. The present work focuses on the role of RTG signaling in salt-induced osmotic stress and its interaction with HOG1. Wild-type and mutant cells, lacking HOG1 and/or RTG genes, are compared with respect to cell growth features, retrograde signaling activation and mitochondrial function in the presence and in the absence of high osmostress. We show that RTG2, the main upstream regulator of the RTG pathway, contributes to osmoadaptation in an HOG1-dependent manner and that, with RTG3, it is notably involved in a late phase of growth. Our data demonstrate that impairment of RTG signaling causes a decrease in mitochondrial respiratory capacity exclusively under osmostress. Overall, these results suggest that HOG1 and the RTG pathway may interact sequentially in the stress signaling cascade and that the RTG pathway may play a role in inter-organellar metabolic communication for osmoadaptation.
    Keywords Saccharomyces cerevisiae ; cell growth ; glycerol ; mitochondria ; mutants ; osmolarity ; osmotic stress ; osmotolerance ; transcription (genetics)
    Language English
    Dates of publication 2021-0906
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9091894
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: RTG

    Guaragnella, Nicoletta / Agrimi, Gennaro / Scarcia, Pasquale / Suriano, Clelia / Pisano, Isabella / Bobba, Antonella / Mazzoni, Cristina / Palmieri, Luigi / Giannattasio, Sergio

    Microorganisms

    2021  Volume 9, Issue 9

    Abstract: ... ...

    Abstract Mitochondrial
    Language English
    Publishing date 2021-09-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9091894
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A disease with a sweet tooth: exploring the Warburg effect in Alzheimer's disease.

    Atlante, Anna / de Bari, Lidia / Bobba, Antonella / Amadoro, Giuseppina

    Biogerontology

    2017  Volume 18, Issue 3, Page(s) 301–319

    Abstract: After more than 80 years from the revolutionary discoveries of Otto Warburg, who observed high glucose dependency, with increased glycolysis and lactate production regardless of oxygen availability in most cancer cells, the 'Warburg effect' returns to ... ...

    Abstract After more than 80 years from the revolutionary discoveries of Otto Warburg, who observed high glucose dependency, with increased glycolysis and lactate production regardless of oxygen availability in most cancer cells, the 'Warburg effect' returns to the fore in neuronal cells affected by Alzheimer's disease (AD). Indeed, it seems that, in the mild phase of AD, neuronal cells "prefer" to use the energetically inefficient method of burning glucose by glycolysis, as in cancer, proving to become resistant to β-amyloid (Aβ)-dependent apoptosis. However, in the late phase, while most AD brain cells die in response to Aβ toxicity, only small populations of neurons, exhibiting increased glucose uptake and glycolytic flux, are able to survive as they are resistant to Aβ. Here we draw an overview on the metabolic shift for glucose utilization from oxidative phosphorylation to glycolysis, focusing on the hypothesis that, as extreme attempt to oppose the impending death, mitochondria-whose dysfunction and central role in Aβ toxicity is an AD hallmark-are sent into quiescence, this likely contributing to activate mechanisms of resistance to Aβ-dependent apoptosis. Finally, the attempt turns out fruitless since the loss of the adaptive advantage afforded by elevated aerobic glycolysis exacerbates the pathophysiological processes associated with AD, making the brain susceptible to Aβ-induced neurotoxicity and leading to cell death and dementia. The understanding of how certain nerve cells become resistant to Aβ toxicity, while the majority dies, is an attractive challenge toward the identification of novel possible targets for AD therapy.
    Language English
    Publishing date 2017-06
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2047160-9
    ISSN 1573-6768 ; 1389-5729
    ISSN (online) 1573-6768
    ISSN 1389-5729
    DOI 10.1007/s10522-017-9692-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Yeast as a Model to Unravel New BRCA2 Functions in Cell Metabolism.

    Costanza, Alessandra / Guaragnella, Nicoletta / Bobba, Antonella / Manzari, Caterina / L'Abbate, Alberto / Giudice, Claudio Lo / Picardi, Ernesto / D'Erchia, Anna Maria / Pesole, Graziano / Giannattasio, Sergio

    Frontiers in oncology

    2022  Volume 12, Page(s) 908442

    Abstract: Mutations in BRCA2 gene increase the risk for breast cancer and for other cancer types, including pancreatic and prostate cancer. Since its first identification as an oncosupressor in 1995, the best-characterized function of BRCA2 is in the repair of DNA ...

    Abstract Mutations in BRCA2 gene increase the risk for breast cancer and for other cancer types, including pancreatic and prostate cancer. Since its first identification as an oncosupressor in 1995, the best-characterized function of BRCA2 is in the repair of DNA double-strand breaks (DSBs) by homologous recombination. BRCA2 directly interacts with both RAD51 and single-stranded DNA, mediating loading of RAD51 recombinase to sites of single-stranded DNA. In the absence of an efficient homologous recombination pathway, DSBs accumulate resulting in genome instability, thus supporting tumorigenesis. Yet the precise mechanism by which BRCA2 exerts its tumor suppressor function remains unclear. BRCA2 has also been involved in other biological functions including protection of telomere integrity and stalled replication forks, cell cycle progression, transcriptional control and mitophagy. Recently, we and others have reported a role of BRCA2 in modulating cell death programs through a molecular mechanism conserved in yeast and mammals. Here we hypothesize that BRCA2 is a multifunctional protein which exerts specific functions depending on cell stress response pathway. Based on a differential RNA sequencing analysis carried out on yeast cells either growing or undergoing a regulated cell death process, either in the absence or in the presence of BRCA2, we suggest that BRCA2 causes central carbon metabolism reprogramming in response to death stimuli and encourage further investigation on the role of metabolic reprogramming in BRCA2 oncosuppressive function.
    Language English
    Publishing date 2022-06-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2022.908442
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Characterization of mitochondrial function in cells with impaired cystic fibrosis transmembrane conductance regulator (CFTR) function.

    Atlante, Anna / Favia, Maria / Bobba, Antonella / Guerra, Lorenzo / Casavola, Valeria / Reshkin, Stephan Joel

    Journal of bioenergetics and biomembranes

    2016  Volume 48, Issue 3, Page(s) 197–210

    Abstract: Evidence supporting the occurrence of oxidative stress in Cystic Fibrosis (CF) is well established and the literature suggests that oxidative stress is inseparably linked to mitochondrial dysfunction. Here, we have characterized mitochondrial function, ... ...

    Abstract Evidence supporting the occurrence of oxidative stress in Cystic Fibrosis (CF) is well established and the literature suggests that oxidative stress is inseparably linked to mitochondrial dysfunction. Here, we have characterized mitochondrial function, in particular as it regards the steps of oxidative phosphorylation and ROS production, in airway cells either homozygous for the F508del-CFTR allele or stably expressing wt-CFTR. We find that oxygen consumption, ΔΨ generation, adenine nucleotide translocator-dependent ADP/ATP exchange and both mitochondrial Complex I and IV activities are impaired in CF cells, while both mitochondrial ROS production and membrane lipid peroxidation increase. Importantly, treatment of CF cells with the small molecules VX-809 and 4,6,4'-trimethylangelicin, which act as "correctors" for F508del CFTR by rescuing the F508del CFTR-dependent chloride secretion, while having no effect per sè on mitochondrial function in wt-CFTR cells, significantly improved all the above mitochondrial parameters towards values found in the airway cells expressing wt-CFTR. This novel study on mitochondrial bioenergetics provides a springboard for future research to further understand the molecular mechanisms responsible for the involvement of mitochondria in CF and identify the proteins primarily responsible for the F508del-CFTR-dependent mitochondrial impairment and thus reveal potential novel targets for CF therapy.
    MeSH term(s) Aminopyridines/pharmacology ; Aminopyridines/therapeutic use ; Benzodioxoles/pharmacology ; Benzodioxoles/therapeutic use ; Cells, Cultured ; Chlorides/metabolism ; Cystic Fibrosis/drug therapy ; Cystic Fibrosis/genetics ; Cystic Fibrosis Transmembrane Conductance Regulator/genetics ; Cystic Fibrosis Transmembrane Conductance Regulator/physiology ; Energy Metabolism/drug effects ; Energy Metabolism/genetics ; Furocoumarins/pharmacology ; Furocoumarins/therapeutic use ; Humans ; Mitochondrial Diseases/drug therapy ; Mitochondrial Diseases/metabolism ; Mitochondrial Diseases/physiopathology ; Mutation ; Respiratory System/cytology
    Chemical Substances Aminopyridines ; Benzodioxoles ; Chlorides ; Furocoumarins ; Cystic Fibrosis Transmembrane Conductance Regulator (126880-72-6) ; lumacaftor (EGP8L81APK) ; 4,4',6-trimethylangelicin (T2MYR3390L)
    Language English
    Publishing date 2016
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 198499-8
    ISSN 1573-6881 ; 0145-479X ; 0449-5705
    ISSN (online) 1573-6881
    ISSN 0145-479X ; 0449-5705
    DOI 10.1007/s10863-016-9663-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Antioxidant role of hydroxytyrosol on oxidative stress in cadmium-intoxicated rats: different effect in spleen and testes.

    Merra, Elisabetta / Calzaretti, Giovanna / Bobba, Antonella / Storelli, Maria M / Casalino, Elisabetta

    Drug and chemical toxicology

    2014  Volume 37, Issue 4, Page(s) 420–426

    Abstract: Hydroxytyrosol (2-(3,4dihydroxyphenyl)ethanol, (DPE), a phenolic compound present in olive oil, is known to have antioxidant properties. The aim of this study was to investigate the effect of DPE on oxidative stress induced by cadmium injections (CdCl2 2. ...

    Abstract Hydroxytyrosol (2-(3,4dihydroxyphenyl)ethanol, (DPE), a phenolic compound present in olive oil, is known to have antioxidant properties. The aim of this study was to investigate the effect of DPE on oxidative stress induced by cadmium injections (CdCl2 2.5 mg/kg body weight) in spleen and testes of adult male rats. Oxidative stress was evaluated by measuring lipid peroxidation by thiobarbituric acid reactive substances (TBARS) as well as superoxide dismutase (SOD) and catalase (CAT) activities in cytosol and mitochondria. We found that in spleen no TBARS formation was detected following CdCl2 injections; however, DPE induces decrease in TBARS level in treated and untreated rats. On the contrary, we observed that DPE showed no effect on cadmium-induced lipid peroxidation in testes. Cytosolic activities of SOD and CAT decreased significantly only in spleen, where DPE restores the values to the control levels. Noteworthy, mitochondrial activities of SOD and CAT were strongly reduced by cadmium treatment both in spleen and testes, and DPE was not be able to restore their activity. Overall, the results from this study indicated that the DPE has different antioxidant efficiency in spleen and testis of cadmium intoxicated rats.
    MeSH term(s) Animals ; Antioxidants/pharmacology ; Cadmium Chloride/toxicity ; Catalase/metabolism ; Cytosol/drug effects ; Cytosol/metabolism ; Lipid Peroxidation/drug effects ; Male ; Mitochondria/drug effects ; Mitochondria/metabolism ; Oxidative Stress/drug effects ; Phenylethyl Alcohol/analogs & derivatives ; Phenylethyl Alcohol/pharmacology ; Rats ; Rats, Wistar ; Spleen/drug effects ; Spleen/pathology ; Superoxide Dismutase/metabolism ; Testis/drug effects ; Testis/pathology ; Thiobarbituric Acid Reactive Substances/metabolism
    Chemical Substances Antioxidants ; Thiobarbituric Acid Reactive Substances ; 3,4-dihydroxyphenylethanol (10597-60-1) ; Catalase (EC 1.11.1.6) ; Superoxide Dismutase (EC 1.15.1.1) ; Cadmium Chloride (J6K4F9V3BA) ; Phenylethyl Alcohol (ML9LGA7468)
    Language English
    Publishing date 2014-01-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 548368-2
    ISSN 1525-6014 ; 0148-0545
    ISSN (online) 1525-6014
    ISSN 0148-0545
    DOI 10.3109/01480545.2013.878950
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Alzheimer's proteins, oxidative stress, and mitochondrial dysfunction interplay in a neuronal model of Alzheimer's disease.

    Bobba, Antonella / Petragallo, Vito A / Marra, Ersilia / Atlante, Anna

    International journal of Alzheimer's disease

    2010  Volume 2010

    Abstract: In this paper, we discuss the interplay between beta-amyloid (Aβ) peptide, Tau fragments, oxidative stress, and mitochondria in the neuronal model of cerebellar granule neurons (CGNs) in which the molecular events reminiscent of AD are activated. The ... ...

    Abstract In this paper, we discuss the interplay between beta-amyloid (Aβ) peptide, Tau fragments, oxidative stress, and mitochondria in the neuronal model of cerebellar granule neurons (CGNs) in which the molecular events reminiscent of AD are activated. The identification of the death route and the cause/effect relationships between the events leading to death could be helpful to manage the progression of apoptosis in neurodegeneration and to define antiapoptotic treatments acting on precocious steps of the death process. Mitochondrial dysfunction is among the earliest events linked to AD and might play a causative role in disease onset and progression. Recent studies on CGNs have shown that adenine nucleotide translocator (ANT) impairment, due to interaction with toxic N-ter Tau fragment, contributes in a significant manner to bioenergetic failure and mitochondrial dysfunction. These findings open a window for new therapeutic strategies aimed at preserving and/or improving mitochondrial function.
    Language English
    Publishing date 2010-09-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2573333-3
    ISSN 2090-0252 ; 2090-8024
    ISSN (online) 2090-0252
    ISSN 2090-8024
    DOI 10.4061/2010/621870
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Yeast acetic acid-induced programmed cell death can occur without cytochrome c release which requires metacaspase YCA1.

    Guaragnella, Nicoletta / Bobba, Antonella / Passarella, Salvatore / Marra, Ersilia / Giannattasio, Sergio

    FEBS letters

    2010  Volume 584, Issue 1, Page(s) 224–228

    Abstract: To investigate the role of cytochrome c (cyt c) release in yeast acetic acid-induced programmed cell death (AA-PCD), wild type (wt) and cells lacking metacaspase (Deltayca1), cytochrome c (Deltacyc1,7) and both (Deltacyc1,7Deltayca1) were compared for AA- ...

    Abstract To investigate the role of cytochrome c (cyt c) release in yeast acetic acid-induced programmed cell death (AA-PCD), wild type (wt) and cells lacking metacaspase (Deltayca1), cytochrome c (Deltacyc1,7) and both (Deltacyc1,7Deltayca1) were compared for AA-PCD occurrence, hydrogen peroxide (H(2)O(2)) production and caspase activity. AA-PCD occurs in Deltacyc1,7 and Deltacyc1,7Deltayca1 cells slower than in wt, but similar to that in Deltayca1 cells, in which no cytochrome c release occurs. Both H(2)O(2) production and caspase activation occur in these cells with early and extra-activation in Deltacyc1,7 cells. We conclude that alternative death pathways can be activated in yeast AA-PCD, one dependent on cyt c release, which requires YCA1, and the other(s) independent on it.
    MeSH term(s) Acetic Acid/pharmacology ; Apoptosis ; Caspases/genetics ; Caspases/metabolism ; Cytochromes c/genetics ; Cytochromes c/metabolism ; Hydrogen Peroxide/metabolism ; Saccharomyces cerevisiae/drug effects ; Saccharomyces cerevisiae/enzymology ; Saccharomyces cerevisiae/genetics ; Saccharomyces cerevisiae Proteins/genetics ; Saccharomyces cerevisiae Proteins/metabolism
    Chemical Substances Saccharomyces cerevisiae Proteins ; Cytochromes c (9007-43-6) ; Hydrogen Peroxide (BBX060AN9V) ; Caspases (EC 3.4.22.-) ; MCA1 protein, S cerevisiae (EC 3.4.22.-) ; Acetic Acid (Q40Q9N063P)
    Language English
    Publishing date 2010-01-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 212746-5
    ISSN 1873-3468 ; 0014-5793
    ISSN (online) 1873-3468
    ISSN 0014-5793
    DOI 10.1016/j.febslet.2009.11.072
    Database MEDical Literature Analysis and Retrieval System OnLINE

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