Faculty Members

Prof.GEORGIOS Charalambos no ZACHARAKIS

MBBS, BSc, MSc, PhD, EBGH Professor Department of Internal Diseases College of Medicine In Al Karj

Faculty members housing Prince Sattam bin Abdulaziz University Al Kharj 11942, KSA mob. Tel.: +966537005942 e-mail: g.zacharakis@psau.edu.sa
011-588-6810
g.zacharakis@psau.edu.sa

Curriculum Vitae
Publications

Education

BSc in Microbiology July 1994 MSc in Human Molecular Genetics Nov. 1995 MB BS (Medical Degree) July 2000 PhD (in Medicine) March 2005 Gastroenterology (European Board) March 2010

Research Interests

Artificial intelligence in Colorectal cancer screening and adenoma detection rate
Advanced Therapeutic Endoscopy
Gastrointestinal Functional Diseases
Helicobacter Pylori infection and Dyspepsia
Hepatology

Experience

2011 - 2015 - Professor - University of Nicosia, Cyprus
2015 - until now - Professor - PSAU

Responsibilities

Supervisor of Endoscopy Unit, Department of Internal Medicine, PSAUH Supervisor of research teams inside and outside KSA Teaching (lectures, bedside teaching, seminars)

Publications

Georgios Zacharakis*, Ahmed Abdullah Albadrani and Mohammed Saad Alqahtani. Gastric Cancer Prevention; Detection of Premalignant Gastric Lesions and Surveillance for Early Detection of Gastric Cancer in Low Incidence Countries. Gastro Med Res. 7(5). GMR. 000671. 2023. DOI: 10.31031/GMR.2023.07.000671
Zacharakis, G.; Almasoud, A.; Arahmane, O.; Alzahrani,
J.; Al-Ghamdi, S. Epidemiology, Risk Factors for Gastric Cancer and Surveillance of Premalignant Gastric Lesions: A Prospective Cohort Study of Central Saudi Arabia. Curr. Oncol. 2023, 30, 8338–8351. https://doi.org/ 10.3390/curroncol30090605
Zacharakis G, Albadrani A, Alhussain A, Khushbu A, Rashid A, An Investigation into the State of the Art and Perspective for Medical Field in Reference with Artificial Intelligence, J PHARM NEGATIVE RESULTS 2022;13(4): 1564-1571.
Zacharakis G, Almasoud A, Arahmaner O, Aldossary K, Alzahrani J, Al-Ghamdi S, AlShehri A, Nikolaidis P, Bawazir A, Alfayez T, Daadour M, Alslimah F, Altamimi M, Alshalawi S. A 5-year evaluation of early-and late-onset sporadic colorectal cancer screening in central Saudi Arabia. Saudi J Gastroenterol. 2022 Oct 6. doi: 10.4103/sjg.sjg_333_22. Epub ahead of print. PMID: 36254929.
Georgios Zacharakis, Abdulaziz Almasoud, Khaled Aldossari. Colorectal cancer screening challenges in Saudi Arabia. A comprehensive review article. Arch Med Sci Civil Dis 2022; 7: e24–e32.
Zacharakis G, Almasoud A, Arahmane O, Ramadan M, AlZahrani J, Al-Ghamdi S, Alshehri AA, Alanazi A, Alotibi A, Shammary F, Binowwais F and Nikolaidis P. Inflammatory Bowel Diseases in a Central Urban Area, Riyadh Province Al-Kharj of Saudi Arabia: Epidemiology, Clinical Characteristics, Natural Course of Disease and Current Clinical Practice. Japanese J Gastro Hepatol 2022;9:1-8.
Zacharakis G, Almasoud A. Using of artificial intelligence: Current and future applications in colorectal cancer screening. World Journal of Gastroenterology. 2022; 6;28(24):2778-2783.
Almutairi BF, Alsaygh KW, Altamimi MM, Alshammari AS, Alsomali AM, Alanazi SM, Alzahrani SM, Alsaad AS, Zacharakis G. Internalized Weight Stigma: Prevalence and Association With Psychiatric Disorder Among Overweight and Obese Individuals. Cureus. 2021 Oct 7;13(10):e18577. doi: 10.7759/cureus.18577. PMID: 34760420; PMCID: PMC8572015.
Neuromodulators for Functional Dyspepsia-A Gut-Brain Interaction Disorder: Uptodate Clinical Practice. Georgios Zacharakis, Sameer AlGhamdi and Jamaan AlZahrani. Gastroenterology Medicine & Research 2021;6(2): 521-524.
G Zacharakis, A Almasoud, J AlZahrani, S Al-Ghamdi, A Altuwaim,. Upper gastrointestinal tract involvement in the management of bariatric patients in the Kingdom of Saudi Arabia. Annals of Gastroenterology 2021; 34 (2), 177-182
G Zacharakis, S Al-Ghamdi, J AlZahrani, A Almasoud, O Arahmane, et al. Effects of the Rome IV criteria to functional dyspepsia symptoms in Saudi Arabia: epidemiology and clinical practice. The Korean Journal of Gastroenterology 2020; 76 (6), 304-313.
BG Alanazi, FH Alanazi, AZ Albriek, AM Aldalbahi, KB Alburayk, G Zacharakis. The prevalence of Helicobacter pylori infection in patients with dyspepsia in the central rural region of Saudi Arabia. Indo American Journal of Pharmaceutical Sciences 2019; 6 (1), 1358-1364.
Georgios Zacharakis, Ahmad Aleid, Khaled K Aldossary. New and old biomarkers of hepatocellular carcinoma. Hepatoma Res 2018;4:e1123
Mohammed Nasser Aldujayn, Abdulaziz Salman Almuaythir, Othman Mohammed Almousa, Naif Theeb Alqahtani, Saad Mohammed Alhaqbani, Fawaz Nawaf Alshaalan, Omar Arahmane, Khaled K. Al Dossari, Pavlos Nikolaidis, Georgios Zacharakis. A Cross-sectional Assessment of Indications and Findings of Upper and Lower Gastrointestinal Endoscopy in Population of Al Kharj Province, KSA. . Saudi J. Med.2018;3:487-492
Reactivation of Hepatitis B Virus During Treatment of Hepatitis C Genotype 3 with Daclatasvir and Sofosbuvir in a Patient with Dual Infection of Hepatitis B and Hepatitis C Virus. Georgios Zacharakis and Jamaan M. Al-Zahrani. Hepat Mon. 2018;18(1):e1253
Georgios Zacharakis, Moaz Hassan Alharbi, Manal Mahmood Alsalmi, Sultan Bander Alotaibi, Yasmeen Abdullah Algaradi, Fatimah Nassir Alsadiq, Pavlos Nikolaidis. Prevalence of Gastroesophageal Reflux Disease Symptoms in Saudi Arabia. Int J Med Res Prof.2018 Jan; 4(1); 21-27.
Georgios Zacharakis and Jamaan M. Al-Zahrani. Coinfection with hepatitis B and hepatitis C virus: new insights of treatment in the era of direct acting antivirals. Int. J. Adv. Res. 2017 May;5(5):1928-1937.
Manolakopoulos S, Zacharakis G, Zissis M, Giannakopoulos V. Safety and efficacy of daclatasvir in the management of patients with chronic hepatitis C. Ann Gastroenterol. 2016 Jul-Sep;29(3):282-96.
Gbandi E, Goulas A, Sevastianos V, Hadziyannis S, Panderi A, Koskinas J, Papatheodoridis G, Vasiliadis T, Agapakis D, Protopapas A, Ioannidou P, Zacharakis G, Sinakos E, Koutsounas S, Germanidis G. Common ABCB1 polymorphisms in Greek patients with chronic hepatitis C infection: A comparison with hyperlipidemic patients and the general population. Pharmacol Rep. 2016 Apr;68(2):476-82.
Papantoniou V, Valsamaki P, Skorda L, Papantoniou I, Delichas Z, Zacharakis G, Michopoulos S, Dimopoulos M, Koskinas I.Technetium-99m labelled red blood cells scintigraphy and not iminodiacetic acid cholescintigraphy facilitates the discrimination of hepatic cirrhosis from fibrosis.
Hell J Nucl Med. 2015 Sep-Dec;18(3):238-42.
Triantafyllou K, Viazis N, Tsibouris P, Zacharakis G, Kalantzis C, Karamanolis DG, Ladas SD.Colon capsule endoscopy is feasible to perform after incomplete colonoscopy and guides further workup in clinical practice. Gastrointest Endosc. 2014 Feb;79(2):307-16.
Immune response to hepatitis B vaccine in patients who lost hepatitis B surface antigen during follow up. Zacharakis G, Viazis N, Karamanolis DG. Hepat Mon. 2011 Jun 1;11(6):481-2.
Zacharakis G, Kotsiou S, Papoutselis M, Vafiadis N, Tzara F, Pouliou E, Maltezos E, Koskinas J, Papoutselis K.Changes in the epidemiology of hepatitis B virus infection following the implementation of immunisation programmes in northeastern Greece. Euro Surveill 2009 Aug 13;14(32). pii: 19297.
Koskinas J, Zacharakis G, Sidiropoulos J, Elefsiniotis J, Savvas S, Kotsiou S, Kountouras D, Schina M, Kostopoulos P, Archimandritis A. Granulocyte colony stimulating factor in HCV genotype-1 patients who develop Peg-IFN-alpha2b related severe neutropenia: a preliminary report on treatment, safety and efficacy. J Med Virol 2009 May;81(5):848-52.
Zacharakis G, Koskinas J, Kotsiou S, Tzara F, Vafeiadis N, Papoutselis M, Maltezos E, Sivridis E, Papoutselis K. The role of serial measurement of serum HBV DNA levels in patients with chronic HBeAg(-) hepatitis B infection: association with liver disease progression. A prospective cohort study. J Hepatol 2008 Dec;49(6):884-91. Epub 2008 Jul 2.
Liver involvement in acute vaso-occlusive crisis of sickle cell disease: prevalence and predisposing factors. Koskinas J, Manesis EK, Zacharakis GH, Galiatsatos N, Sevastos N, Archimandritis AJ. Scand J Gastroenterol 2007 Apr;42(4):499-507.
Zacharakis G, Koskinas J, Kotsiou S, Pouliou E, Papoutselis M, Tzara F, Vafeiadis N, Maltezos E, Archimandritis A, Papoutselis K.Natural history of chronic hepatitis B virus infection in children of different ethnic origins: a cohort study with up to 12 years' follow-up in northern Greece. J Pediatr Gastroenterol Nutr 2007 Jan;44(1):84-91.
George Zacharakis, John Koskinas, Menelaos Papoutselis, Fevronia Tzara, Nikolaos Vafeiadis, Konstantinos Papoutselis, Stamatia Kotsiou. Natural History of chronic HBV infection: a cohort study with up to 12 years follow-up in North Greece. Part of the Interrg I-II/EC-Project. J Med Virol 2005 Oct;77(2):173-9.
Bogdan Petrunov, Mira Kojauharova, Pavel Teoharov, Irina Haidushka, Penka Sotirova, Maria Sredkova, Ivan Russev, George Zacharakis, Fevronia Tzara, Nikolaos Vafeiadis, John Papathanasiou, Kostantinos Papoutselis.EU project interreg II: seroepidemiology study on hepatitis C and B viral infections prevalence in Bulgaria and nothern Greece. Journal of Hepatology, 2002;36:138-139.
Laras A., Zacharakis G. and Hadziyannis S.Absence of the negative strand of GBV-C/HGV RNA from the liver. J Hepatol 1999; 30: 383-388

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Prof.GEORGIOS Charalambos no ZACHARAKIS

Education

Research Interests

Experience

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Faculty Members

Prof.GEORGIOS Charalambos no ZACHARAKIS

Education

Research Interests

Experience

Responsibilities

Publications

Administration of Public Relations and Media