{"id":4825,"date":"2022-05-23T10:56:36","date_gmt":"2022-05-23T07:56:36","guid":{"rendered":"https:\/\/physiology.med.uoa.gr\/?page_id=4825"},"modified":"2026-02-12T12:51:53","modified_gmt":"2026-02-12T10:51:53","slug":"xatzigeorgiou-antonis","status":"publish","type":"page","link":"https:\/\/physiology.med.uoa.gr\/en\/research-infrastructure-services\/research-laboratories\/xatzigeorgiou-antonis\/","title":{"rendered":"Antonios Chatzigeorgiou, Assoc. Professor"},"content":{"rendered":"

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Research focus<\/h2>\n

 <\/p>\n

\"\"<\/p>\n

Our research interests lie in mechanisms perturbing the homeostasis of metabolic organs during the development of obesity\/diabetes-related complications and especially during non-alcoholic fatty liver disease (NAFLD) and steatohepatitis (NASH). Specifically, we focus on: <\/span><\/p>\n

i) The role of immune-parenchymal cell interactions for NAFLD\/NASH\/HCC progression
\nii) Adaptations of parenchymal cells of the liver (e.g. hepatocytes, endothelial cells) during NAFLD\/NASH\/HCC <\/span><\/p>\n

iii) NAFLD\/NASH and sarcopenia<\/span><\/p>\n

\u00a0<\/span><\/p>\n

To do this, we use animal models of disease within the whole spectrum of NAFLD (steatosis\/NASH\/HCC etc.) and we study pathophysiological mechanisms by utilizing in vivo\/ex vivo and in vitro tools (cell culture\/co-culture systems, genetically modified mice, human samples) and by applying cutting-edge technologies of biomedical science (omics, CyTOF, spatial phenotyping etc) .<\/span><\/p>\n

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Personnel<\/h2>\n

\"\"<\/p>\n

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Group Leader<\/h3>\n

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Antonios Chatzigeorgiou (BSc, MD, PhD)<\/a><\/p>\n

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Post-doctoral Scientists<\/h3>\n

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PhD Students<\/h3>\n

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MSc students<\/h3>\n

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BSc students<\/h3>\n

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Past Members<\/h3>\n

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Stavros-Alexandros Doumas (MSc student, \u2018Molecular Biomedicine\u2019; rotation; 2019)<\/p>\n

Renata Giagkou (MSc student, \u2018Molecular and Applied Physiology\u2019; MSc Thesis; 2020)<\/p>\n

Ioannis Ntounias (MSc student, \u2018Molecular Biomedicine\u2019; rotation 2021)<\/p>\n

Michalina Sikorska (MSc student, \u2018Molecular Biomedicine\u2019; MSc Thesis; 2020-2021)<\/p>\n

Stamatios Mantikas (MSc student, \u2018Molecular and Applied Physiology\u2019; MSc Thesis; 2021)<\/p>\n

Katerina Avdi (MSc student, \u2018Molecular Biomedicine\u2019; MSc Thesis; 2022-2023)<\/p>\n

Maria Tsimpidi (MSc student, \u2018Molecular and Applied Physiology\u2019; MSc Thesis; 2022-2023)<\/p>\n

Alkistis Papatheodoridi (PhD student,\u00a0 2019-2022)<\/p>\n

Artemis Monogyiou (MSc student, \u2018Molecular Biomedicine\u2019; rotation 2024)<\/p>\n

Athanasios Emmanouilidis (MSc student, \u2018Molecular Biomedicine\u2019; rotation 2024)<\/p>\n

Christiana Ralliou (MSc student, \u2018Molecular Biomedicine\u2019; MSc Thesis; 2023-2024)<\/p>\n

Nikolaos Vlachogiannis (postdoctoral fellow; 2020-2024)<\/p>\n

Angeliki Katsarou (PhD student, 2019-2025)<\/p>\n

Stamatina Gkika (MSc student, \u2018Molecular and Applied Physiology\u2019; MSc Thesis; 2024-2025)<\/p>\n

Athanasios Tsiatouras (MSc student, \u2018Molecular and Applied Physiology\u2019; MSc Thesis; 2024-2025)<\/p>\n

Ioannis I. Moustakas (PhD student, 2019- )<\/p>\n

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Funding<\/h3>\n

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A. MOST IMPORTANT ORIGINAL ARTICLES (with reverse chronological order)<\/b><\/u><\/span><\/p>\n

1. <\/b><\/span>Giannousi E, Georgiadou C, Vlachogiannis NI, Kassi E, Aggeli IK, Sfikakis PP, Tentolouris N, Protogerou AD, Kararigas G,<\/span> Chatzigeorgiou A. <\/b><\/span>Stabilin-1 levels are related to dysregulated lipid metabolism and atherosclerotic plaque burden. <\/u><\/span>Am J Physiol Heart Circ Physiol.<\/b><\/span> 2025 Dec 1;329(6):H1738-H1744. <\/span><\/p>\n

2.<\/b><\/span> Chung KJ, <\/span>Chatzigeorgiou A<\/b><\/span>, Lim JH, Li X, Marava I, \u2026\u2026., Bl\u00fcher M, Bdeir K, Alexaki VI, Hajishengallis G, Chavakis T. <\/span>A DEL-1\/\u03b1v\u03b23 integrin axis promotes brown adipocyte progenitor proliferation and cold-induced brown adipose tissue adaptation.<\/u><\/span> Mol Metab. <\/b><\/span>2025 Aug 7;100:102229. doi: 10.1016\/j.molmet.2025.102229. <\/span><\/p>\n

3.<\/b><\/span> Katsarou A, Papadopoulos G, Moustakas II, Papadopetraki A, Moustogiannis A, Legaki AI, Giannousi E, \u2026\u2026.Philippou A, Koutsilieris M, <\/span>Chatzigeorgiou A.<\/b><\/span> Exercise mitigates liver senescence but does not outmatch dietary restriction in obesity-related MASLD<\/u><\/span>. <\/span>Metabolism<\/b><\/span>. 2025 Sep;170:156325. <\/span><\/p>\n

4.<\/b><\/span> Vlachogiannis NI, Legaki AI, Kassi E, Mikelis CM, Tentolouris N, Sfikakis PP, Protogerou AD, <\/span>Chatzigeorgiou A.<\/b><\/span> Association of Circulating Robo4 with Obesity, Hypertension and Atherosclerotic Plaque Burden. <\/u><\/span>Thromb Haemost. <\/b><\/span>2025 Aug;125(8):817-820. IF: 4.3<\/span><\/p>\n

5.<\/b><\/span> Papadopoulos G, Legaki AI, Georgila K, Vorkas P, \u2026\u2026\u2026\u2026 Panayotou G, Gika H, Samiotaki M, Eliopoulos AG,\u00a0<\/span>Chatzigeorgiou A: <\/b><\/span>Integrated omics analysis for characterization of the contribution of high fructose corn syrup to non-alcoholic fatty liver disease in obesity<\/u><\/span>. <\/span>Metabolism<\/b><\/span>. 2023 Mar 28;144:155552.<\/span><\/p>\n

6.<\/b><\/span> Hadjihambi A, Velliou RI, Tsialios P, Legaki AI, <\/span>Chatzigeorgiou A*<\/b><\/span>, Rouchota MG<\/span>*<\/b><\/span><\/p>\n

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease<\/u><\/span>. <\/span>J Vis Exp.<\/b><\/span> 2023 Mar 24;(193). <\/span>*equal last authors<\/b><\/span><\/p>\n

7.<\/b><\/span> Troullinaki M, Chen LS, Witt A, Pyrina I, Phieler J, Kourtzelis I, Chmelar J, Sprott D, Gercken B, Koutsilieris M, Chavakis T, <\/span>Chatzigeorgiou A<\/b><\/span>: <\/span>Robo4-mediated pancreatic endothelial integrity decreases inflammation and islet destruction in autoimmune diabetes.<\/u><\/span> FASEB J<\/b><\/span> 2020 Feb;34:3336-3346. <\/span><\/p>\n

8.<\/b><\/span> Kalafati L, Kourtzelis I, Schulte-Schrepping J, Li X, Hatzioannou A, Grinenko T, Hagag E, Sinha A, Has C, Dietz S, de Jesus Domingues AM, Nati M, Sormendi S, Neuwirth A, <\/span>Chatzigeorgiou A<\/b><\/span>,\u2026\u2026\u2026.Verginis P, Mitroulis I, Chavakis T: <\/span>Innate Immune Training of Granulopoiesis Promotes Anti-tumor Activity.<\/u><\/span> Cell <\/b><\/span>2020 Oct 29;183:771-785 e712. <\/span><\/p>\n

9. Chatzigeorgiou<\/b><\/span> A, Mitroulis I, Chrysanthopoulou A, Legaki AI, Ritis K, Tentolouris N, Protogerou AD, Koutsilieris M, Sfikakis PP: <\/span>Increased Neutrophil Extracellular Traps Related to Smoking Intensity and Subclinical Atherosclerosis in Patients with Type 2 Diabetes.<\/u><\/span> Thromb Haemost<\/b><\/span> 2020 Nov;120 (11):1587-1589. <\/span><\/p>\n

10.<\/b><\/span> Nikolakopoulou P, <\/span>Chatzigeorgiou A<\/b><\/span>, Kourtzelis I, Toutouna L, \u2026\u2026\u2026 Chrousos G, Yi CX, Garc\u00eda-C\u00e1ceres C, Tsch\u00f6p MH, Bornstein SR, Androutsellis-Theotokis A. <\/span>Streptozotocin-induced \u03b2-cell damage, high fat diet, and metformin administration regulate Hes3 expression in the adult mouse brain. <\/u><\/span>Sci Rep.<\/b><\/span> 2018 Jul 27;8(1):11335.<\/span><\/p>\n

11.<\/b><\/span> Mitroulis I, Ruppova K, Wang B, Chen LS, Grzybek M, Grinenko T, Eugster A, Troullinaki M, Palladini A, Kourtzelis I, <\/span>Chatzigeorgiou A<\/b><\/span>, Schlitzer A, Beyer M, \u2026\u2026. Schultze JL, Wielockx B, Zamboni N, Mirtschink P, Coskun \u00dc, Hajishengallis G, Netea MG, Chavakis T. <\/span>Modulation of Myelopoiesis Progenitors Is an Integral Component of Trained Immunity.<\/u><\/span> Cell<\/b><\/span>. 2018 Jan 11;172(1-2):147-161.e12.<\/span><\/p>\n

12.<\/b><\/span> Chung KJ*, <\/span>Chatzigeorgiou A*,<\/b><\/span> Economopoulou M, Garcia-Martin R, \u2026\u2026.. Hajishengallis G, Chavakis T: <\/span>A self-sustained loop of inflammation-driven inhibition of beige adipogenesis in obesity.<\/u><\/span><\/p>\n

Nat. Immunol<\/b><\/span> 2017;18:654-664 <\/span>*equal first authors<\/b><\/span><\/p>\n

13. <\/b><\/span>von Loeffelholz C, Lieske S, Neusch\u00e4fer-Rube F, Willmes DM, Raschzok N, Sauer IM, K\u00f6nig J, Fromm MF, Horn P, <\/span>Chatzigeorgiou A<\/b><\/span>, Pathe-Neusch\u00e4fer-Rube A, \u2026\u2026.. , Chavakis T, P\u00fcschel GP, Birkenfeld AL. <\/span>The human longevity gene homolog INDY and interleukin-6 interact in hepatic lipid metabolism.<\/u><\/span> Hepatology<\/b><\/span>. 2017 Aug;66(2):616-630. <\/span><\/p>\n

14.<\/b><\/span> Chmelar J, <\/span>Chatzigeorgiou A<\/b><\/span>, Chung KJ, Prucnal M, Voehringer D, Roers A, Chavakis T: <\/span>No Role for Mast Cells in Obesity-Related Metabolic Dysregulation.<\/u><\/span> Front Immunol<\/b><\/span> 2016 Nov 24;7:524<\/span><\/p>\n

15. Chatzigeorgiou A<\/b><\/span>, Seijkens T, Zarzycka B, Engel D, Poggi M, van den Berg S, van den Berg S, \u2026\u2026\u2026Schally AV, Weber C, Bornstein SR, Nicolaes G, Chavakis T, Lutgens E: <\/span>Blocking CD40-TRAF6 signaling is a therapeutic target in obesity-associated insulin resistance.<\/u><\/span> Proc Natl Acad Sci USA<\/b><\/span> 2014 Mar 25;111:2686-2691<\/span><\/p>\n

16. Chatzigeorgiou A<\/b><\/span>, Chung KJ, Garcia-Martin R, Alexaki VI, Klotzsche-von Ameln A, Phieler J, Sprott D, \u2026\u2026 Bornstein SR, Muders MH, Boon L, Karalis KP, Lutgens E, Chavakis T: <\/span>Dual role of B7 costimulation in obesity-related nonalcoholic steatohepatitis and metabolic dysregulation.<\/u><\/span> Hepatology<\/b><\/span> 2014 Oct;60 (4):1196-1210<\/span><\/p>\n

17.<\/b><\/span> Chatzigeorgiou A<\/b><\/span>, Kandaraki E, Piperi C, Livadas S, Papavassiliou AG, Koutsilieris M, Papalois A, Diamanti-Kandarakis E: <\/span>Dietary glycotoxins affect scavenger receptor expression and the hormonal profile of female rats.<\/u><\/span><\/p>\n

J Endocrinol.<\/b><\/span> 2013 Aug 29;218(3):331-7. <\/span><\/p>\n

18.<\/b><\/span> Phieler J, Chung KJ*, <\/span>Chatzigeorgiou A*<\/b><\/span>, Klotzsche-von Ameln A, \u2026\u2026\u2026, Mziaut H, Solimena M, Karalis KP, Economopoulou M, Lambris JD, Chavakis T. <\/span>The complement anaphylatoxin C5a receptor contributes to obese adipose tissue inflammation and insulin resistance. <\/u><\/span>J Immunol.<\/b><\/span> 2013 Oct 15;191(8):4367-74.<\/span><\/p>\n

19.<\/b><\/span> Langer HF, Choi EY, Zhou H, Schleicher R, Chung KJ, Tang Z, Gobel K, Bdeir K, <\/span>Chatzigeorgiou A<\/b><\/span>, Wong C, Bhatia S, Kruhlak MJ, \u2026\u2026. Lambris JD, Li X, Meuth SG, Kubes P, Chavakis T: <\/span>Platelets contribute to the pathogenesis of experimental autoimmune encephalomyelitis.<\/u><\/span> Circ Res<\/b><\/span> 2012;110:1202-1210<\/span><\/p>\n

20. Chatzigeorgiou A<\/b><\/span>, Harokopos V, Mylona-Karagianni C, Tsouvalas E, Aidinis V, Kamper EF: <\/span>The pattern of inflammatory\/anti-inflammatory cytokines and chemokines in type 1 diabetic patients over time.<\/u><\/span> Ann Med<\/b><\/span> 2010;42:426-438<\/span><\/p>\n

B) MOST IMPORTANT REVIEWS<\/b><\/u><\/span><\/p>\n

    \n
  1. \n

    Papadakos SP, Georgiadou C, Kassi E, Velliou RI, <\/span>Chatzigeorgiou A<\/b><\/span>. <\/span>Animal models of lean metabolic dysfunction-associated steatotic liver disease (MASLD): bridging pathogenesis and novel drug discovery. <\/u><\/span>Expert Opin Drug Discov.<\/b><\/span> 2025 Dec;20(12):1683-1700. <\/span><\/p>\n<\/li>\n

  2. \n

    Velliou R, Legaki AI, Nikolakopoulou P, Vlachogiannis N, <\/span>Chatzigeorgiou A.<\/b><\/span> Liver endothelial cells in NAFLD and transition to NASH and HCC<\/u><\/span>.<\/span> Cell Mol Life Sci.<\/b><\/span> 2023 Oct 5;80(11):314.<\/span><\/p>\n<\/li>\n

  3. \n

    Legaki AI, Moustakas II, Sikorska M, Papadopoulos G, Velliou RI, <\/span>Chatzigeorgiou A<\/b><\/span>. <\/span>Hepatocyte Mitochondrial Dynamics and Bioenergetics in Obesity-Related Non-Alcoholic Fatty Liver Disease<\/u><\/span>. <\/span>Curr Obes Rep<\/b><\/span>. 2022 Sep;11(3):126-143.<\/span><\/p>\n<\/li>\n

  4. \n

    Papatheodoridi AM, Chrysavgis L, Koutsilieris M, <\/span>Chatzigeorgiou A.<\/b><\/span> The Role of Senescence in the Development of Nonalcoholic Fatty Liver Disease and Progression to Nonalcoholic Steatohepatitis.<\/u><\/span> Hepatology. <\/b><\/span>2020 Jan;71(1):363-374. <\/span><\/p>\n<\/li>\n

  5. \n

    Chung KJ, Nati M, Chavakis T, <\/span>Chatzigeorgiou A<\/b><\/span>. <\/span>Innate immune cells in the adipose tissue.<\/u><\/span> Rev Endocr Metab Disord. <\/b><\/span>2018 Dec;19(4):283-292. <\/span><\/p>\n<\/li>\n

  6. \n

    Chatzigeorgiou A<\/b><\/span>, Kandaraki E, Papavassiliou AG, Koutsilieris M. <\/span>Peripheral targets in obesity treatment: a comprehensive update.<\/u><\/span> Obes Rev.<\/b><\/span> 2014 Jun;15(6):487-503. <\/span><\/p>\n<\/li>\n

  7. \n

    Chatzigeorgiou A<\/b><\/span>, Karalis KP, Bornstein SR, Chavakis T. <\/span>Lymphocytes in obesity-related adipose tissue inflammation.<\/u><\/span> Diabetologia<\/b><\/span>. 2012 Oct;55(10):2583-2592. <\/span><\/p>\n<\/li>\n<\/ol>\n

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    [vc_row][vc_column][vc_column_text] Research focus   Our research interests lie in mechanisms perturbing the homeostasis of metabolic organs during the development of obesity\/diabetes-related complications and especially during non-alcoholic fatty liver disease (NAFLD) and steatohepatitis (NASH). Specifically, we focus on: i) The role of immune-parenchymal cell interactions for NAFLD\/NASH\/HCC progression ii) Adaptations of parenchymal cells of the liver […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4795,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"yoast_head":"\nAntonios Chatzigeorgiou, Assoc. Professor – \u0395\u03c1\u03b3\u03b1\u03c3\u03c4\u03ae\u03c1\u03b9\u03bf \u03a6\u03c5\u03c3\u03b9\u03bf\u03bb\u03bf\u03b3\u03af\u03b1\u03c2 "\u03a6\u03c5\u03c3\u03b9\u03bf\u03bb\u03bf\u03b3\u03b5\u03af\u03bf\u03bd"<\/title>\n<meta name=\"description\" content=\"Antonios Chatzigeorgiou, Assoc. 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