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Profil bibliographique

George J. Theocharis

Informations fournies par OpenAlex. Research Africa ne déduit ni nationalité, ni poste, ni coordonnées personnelles.

27Publications signalées
613Citations signalées
1Affiliations récentes

Les institutions déclarées

Les domaines associés

Hepatitis C virus researchLiver Disease Diagnosis and TreatmentGastrointestinal Bleeding Diagnosis and TreatmentMicroscopic ColitisInflammatory Bowel Disease

Les publications récentes

2025 conference-paper OpenAlex

A case of multiple colonic lipomatosis: An extraordinary endoscopic image

C Sotiropoulos, Christos Konstantakis, George J. Theocharis, Christos K Triantos et autres

Introduction Gastrointestinal lipomatosis is characterized by the presence of a submucosal lobulated collection of mature fatty tissue. Colonic lipomatous lesions may be solitary or multiple, encapsulated lipomas or diffuse, discrete, unencapsulated lobules of adipose tissue [ 1 ] [ 2 ] [ …

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0 citations Endoscopy
2025 conference-paper OpenAlex

A case of dysphagia due to an esophageal duplication cyst in a difficult anatomical site: A challenging situation for endoscopic treatment

Christos Sotiropoulos, Christos Konstantakis, George J. Theocharis, Christos K Triantos et autres

Introduction Esophageal duplication cyst may cause symptoms due to compression, rupture and inflammation of the esophagus and require intervention when being symptomatic. Case report We report the case of an 83-year-old patient with a five month history of dysphagia. Esophagogram showed a …

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0 citations Endoscopy
2025 conference-paper OpenAlex

Successful Over-the-Scope Clip closure of persistent leak after Roux-en-Y gastric bypass surgery

C Sotiropoulos, Christos Konstantakis, George J. Theocharis, Christos K Triantos et autres

Introduction Roux-en-Y gastric bypass surgery is widely accepted in the treatment of morbid obesity. Anastomotic leakage is one of the most commonly reported and feared complications. The complete healing of the leak is challenging and in some cases may need to utilize …

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0 citations Endoscopy
Accès ouvert 2025 conference-abstract OpenAlex

P1264 Metabolic dysfunction-associated steatotic liver disease (MASLD) in patients with Inflammatory Bowel Disease (IBD). A prospective single-center study

Ploutarchos Pastras, Konstantinos Papantoniou, Efthymios P. Tsounis, Stavros Kanaloupitis et autres

Abstract Background Inflammatory bowel disease (IBD) has been linked to an increased risk of metabolic dysfunction-associated steatotic liver disease (MASLD). This study assesses MASLD prevalence in IBD patients and its associations with demographic, clinical, and laboratory features. Methods This prospective study included …

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3 citations Journal of Crohn s and Colitis
2025 conference-abstract OpenAlex

P0766 Rate and predictors of successful anti-TNF de-escalation in dose escalated IBD patients. A real-world Greek - Turkish collaborative study

Nikos Viazis, Murat Törüner, V. Papastergiou, K Mousourakis et autres

Abstract Background Anti-TNFa agents (anti-TNFs) are still the first line therapy for patients with Inflammatory Bowel Disease (IBD). We aimed to i) report IBD patients receiving anti-TNFs, who needed dose escalation because of secondary loss of response, and (ii) identify the rate …

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0 citations Journal of Crohn s and Colitis
Accès ouvert 2025 conference-abstract OpenAlex

P0040 Measurement of collagen concentration throughout the intestinal layers using Deep Learning: implications in Inflammatory Bowel Disease (IBD)

Efthymios P. Tsounis, Roberta Forlano, Theodoros A. Voulgaris, Pinelopi Bosgana et autres

Abstract Background IBD, particularly Crohn’s disease (CD), is marked by recurrent episodes of inflammation, leading to fibrosis and collagen deposition throughout the intestinal layers.1,2 In this study, we aim to quantify collagen levels across the distinct layers of the gut and examine …

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0 citations Journal of Crohn s and Colitis
2024 article OpenAlex

Upper gastrointestinal bleeding in a patient with a history of laparoscopic gastric plication bariatric surgery: Beware of the bleeding site inside the folds

Christos Sotiropoulos, Christos Konstantakis, George J. Theocharis, Christos K Triantos et autres

Text Laparoscopic gastric plication is a restrictive bariatric procedure. [ 1 ] [ 2 ] [ 3 ] A 39-year-old man with history of gastric plication surgery (for morbid obesity) presented with melena and episode of fainting. The patient was immediately supported …

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0 citations Endoscopy
2024 article OpenAlex

Over-the-scope clip for recurrent peptic ulcer hemorrhage: Use of a novel tool as a rescue treatment

Christos Sotiropoulos, Christos Konstantakis, George J. Theocharis, Christos K Triantos et autres

Text Peptic ulcer is the most common cause of nonvariceal upper gastrointestinal bleeding. [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] A 83-year-old patient, hospitalized for urinary tract infection, manifested in-hospital melena. Upper endoscopy was …

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0 citations Endoscopy
Accès ouvert 2024 conference-abstract OpenAlex

P942 Real-world data on outcomes of treatment with ustekinumab in patients with Ulcerative Colitis

Konstantina Chalakatevaki, G Kokkotis, M L Chatzinikolaou, Evangelia Anagnostopoulou et autres

Abstract Background Ustekinumab (UST), a monoclonal antibody against the shared p40 subunit of IL-12/IL-23, has been approved for the treatment of moderate to severe ulcerative colitis (UC). The aim of this ambi-directional study is to collect and analyze data from a large …

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0 citations Journal of Crohn s and Colitis
2023 article OpenAlex

The experience of performing ERCP in a tertiary referral center in Greece – What have we achieved 20 years later?

Christos Sotiropoulos, George J. Theocharis, Γεωργία Διαμαντοπούλου, Christos K Triantos et autres

Aims To compare data from ERCP procedures performed at a tertiary referral center between two time periods twenty years apart. Methods Data from ERCPs performed in our clinic between January-November 2001 (263 ERCPs) and January-November 2021 (253 ERCPs) were collected and retrospectively …

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0 citations Endoscopy
Accès ouvert 2023 conference-abstract OpenAlex

P406 Observational study of the effectiveness of vedolizumab on treatment outcomes and health-related quality of life in biologic-naïve patients with Inflammatory Bowel Diseases in Greece – the TROVE study - Interim Analysis

M L Chatzinikolaou, Christina Kifnidi, G Kokkotis, Anthia Gatopoulou et autres

Abstract Background Vedolizumab (VDZ), a gut-selective anti-lymphocyte trafficking (GSALT), anti-α4b7 integrin antibody, is an approved and effective treatment for patients with Ulcerative Colitis (UC) and Crohn’s Disease (CD). Biologic-naïve patients appear to respond better to treatment with VDZ, than anti-TNF exposed patients. …

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0 citations Journal of Crohn s and Colitis
Accès ouvert 2023 conference-abstract OpenAlex

P060 Restoration of occludin and claudin-1 expression in patients with Crohn’s disease receiving anti-TNF treatment.

Efthymios P. Tsounis, Christina Geramoutsou, Ioanna Aggeletopoulou, Theoni Lourida et autres

Abstract Background Occludin and claudin-1 are integral components of tight junctions (TJs) that contribute to intestinal barrier integrity. The aim of this study was to prospectively evaluate the expression of occludin and claudin-1 in the intestinal mucosa of patients with Crohn’s disease …

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1 citation Journal of Crohn s and Colitis

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