konstantinos argyriou

Dr. konstantinos argyriou

UNIVERSITY HOSPITAL OF LARISSA,GASTROENTEROLOGY DEPARTMENT
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Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 February 2022 in Nutrients
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Journal Article
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NVNikos Viazis
Nikos Viazis
KAkonstantinos argyriou
konstantinos argyriou
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
DCDimitrios K Christodoulou
Dimitrios K Christodoulou
PAPeriklis Apostolopoulos
Periklis Apostolopoulos
GMGerassimos J Mantzaris
Gerassimos J Mantzaris
Aim: To establish whether the addition of probiotics to a globally accepted Helicobacter pylori (H. pylori)-eradication scheme may reduce the rates of side effects and increase the eradication rates. Methods. Prospective, randomized, placebo-controlled trial of patients receiving eradication therapy for H. pylori in the eight participating centers. All patients received a 10-day proton pump inhibitor containing non-bismuth quadruple therapeutic regimen for H. pylori eradication (omeprazole 20 mg, amoxycillin 1 g, clarithromycin 500 mg, and metronidazole 500 mg all twice daily orally) and were randomized to receive either probiotics (group A) or placebo (group B). The probiotic used combined four probiotic strains, i.e., Lactobacillus Acidophilus, Lactiplantibacillus plantarum, Bifidobacterium lactis, and Saccharomyces boulardii. Results. Data were analyzed for 329 patients in group A and 335 patients in group B. Fifty six (17.0%) patients in group A and 170 (50.7%) patients in group B reported the occurrence of an H. pylori treatment-associated new symptom or the aggravation of a pre-existing symptom of any severity (p < 0.00001). H. pylori was successfully eradicated in 303 patients in group A (92.0%) and 291 patients in group B (86.8%), (p = 0.028). Conclusion: Adding probiotics to the 10-day concomitant non-bismuth quadruple H. pylori eradication regimen increases the eradication rate and decreases side effects.

27 August 2019 in Alimentary Pharmacology & Therapeutics
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Journal Article
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SSShaji Sebastian
Shaji Sebastian
SMSally Myers
Sally Myers
KAkonstantinos argyriou
konstantinos argyriou
GMGayle Martin
Gayle Martin
LLLouis Los
Louis Los
TRTim Raine
Tim Raine
Summary: Background: Accelerated induction regimens of infliximab have been proposed to improve response rates in patients with steroid‐refractory acute severe colitis.Aim: To determine the differences in outcome for acute severe ulcerative colitis between accelerated and standard‐dose infliximabMethods: We collected data on hospitalised patients receiving differing regimens of rescue therapy for steroid‐refractory acute severe ulcerative colitis. Our primary outcome was 30‐day colectomy rate. Secondary outcomes were colectomy within index admission, and at 90 days and 12 months. We used propensity score analysis with optimal calliper matching using high risk covariates defined apriorito reduce potential provider selection bias.Results: We included 131 patients receiving infliximab rescue therapy; 102 received standard induction and 29 received accelerated induction. In the unmatched cohort, there was no difference by type of induction in the 30‐day colectomy rates (18% vs 20%,P = .45), colectomy during index admission (13% vs 20%,P = .26) or overall colectomy (20% vs 24%,P = .38). In the propensity score‐matched cohort of 52 patients, 30‐day colectomy (57% vs 27%,P = .048) and index admission colectomy (53% vs 23%,P = .045) rates were higher in those receiving standard induction compared to accelerated induction but there was no difference in overall colectomy rates (57% vs 31%,P = .09). There was no significant difference in length of stay or in complication and infection rates.Conclusion: In a propensity score‐matched cohort, steroid‐refractory acute severe ulcerative colitis patients, short‐term, but not long‐term, colectomy rates appear to be lower in those receiving an accelerated induction regimen.

29 May 2017 in Canadian Journal of Gastroenterology and Hepatology
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Journal Article
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KAkonstantinos argyriou
konstantinos argyriou
AKAndreas Kapsoritakis
Andreas Kapsoritakis
KOKonstantinos Oikonomou
Konstantinos Oikonomou
AMAnastasios Manolakis
Anastasios Manolakis
ETEirini Tsakiridou
Eirini Tsakiridou
SPSpyridon Potamianos
Spyridon Potamianos
Background. Inflammatory bowel diseases may cause significant disability. However, little is known regarding the life domains where patients encounter most limitations. Objectives. To assess patients’ overall disability and determine the life domains where most restrictions were applied. Secondarily, we sought for possible relationships among disability, quality of life (HRQoL), and population characteristics. Method. The study lasted for two years (2013–2015) and included 200 patients [52%  ulcerative  colitis  (UC)] from a referral centre. Disability was evaluated using the 36-item version of WHODAS 2.0 questionnaire. The influence of population characteristics on overall disability was assessed with linear regression. Results. Crohn’s disease (CD) patients showed greater overall disability compared to UC (19.22 versus 15.01, p=0.001), with higher scores in the domains of relationships, life activities, and participation. Disability was negatively associated with HRQoL (p<0.001). Long activity, extensive disease, rural residence, and employment independently influenced the overall disability in both groups. Additionally, significant influence was recorded for lower education in the UC and for operation and celibacy in the CD group. Conclusions. CD patients were facing more limitations compared to those with UC, especially in the domains of relationships, activities, and participation. Other than clinical factors, sociodemographic characteristics were also associated with increased disability.

1 December 2019 in Drug Design, Development and Therapy
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FVFumi Varyani
Fumi Varyani
KAkonstantinos argyriou
konstantinos argyriou
FPFrank Phillips
Frank Phillips
ETEirini Tsakiridou
Eirini Tsakiridou
GMGordon W. Moran
Gordon W. Moran
Recent advances in the understanding of the pathophysiology of ulcerative colitis (UC) have led to the expansion of our therapeutic arsenal. Conventional treatment options, including aminosalicylates, corticosteroids, thiopurines, and calcineurin inhibitors, fail to control the disease in a significant proportion of patients. Approximately 25–50% of the patients treated with tumor necrosis factor antibodies (anti-TNFα) are primary and secondary non-responders to therapy. Tofacitinib is a novel orally administered small synthetic molecule that inhibits a homologous family of enzymes, termed Janus kinases that modulate multiple key cytokines involved in the pathogenesis of UC. Phase II and III trials showed promising results in UC, leading the Food and Drug Administration (FDA) and the European Medicines Agency (EMA) to approve its administration for the induction and maintenance of remission in moderate-to-severe UC. Herein, we review tofacitinib for the management of UC, its mechanism of action pharmacokinetic properties, efficacy, and safety.

2 February 2024 in American Journal of Gastroenterology
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Journal Article
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GDGabriele Dragoni
Gabriele Dragoni
Tommaso InnocentiTommaso Innocenti
Tommaso Innocenti
AAAMIOT Aurelien
AMIOT Aurelien
FCFabiana Castiglione
Fabiana Castiglione
LMLaura Melotti
Laura Melotti
FCFlavio Andrea Caprioli
Flavio Andrea Caprioli
INTRODUCTION: Patients with ulcerative colitis (UC) receiving immunosuppressive drugs are at substantial risk of colectomy. We aimed to assess the risk of postoperative complications of tofacitinib exposure before colectomy in comparison with biologics. METHODS: A multicenter, retrospective, observational study was conducted in patients with UC who underwent total colectomy for medically refractory disease, exposed to tofacitinib or a biologic before surgery. Primary outcome was the occurrence of any complication within 30 (early) and 90 (late) days after surgery. Secondary outcomes were the occurrence of infections, sepsis, surgical site complications, venous thromboembolic events (VTE), hospital readmissions, and redo surgery within the same timepoints. RESULTS: Three hundred one patients (64 tofacitinib, 162 anti-tumor necrosis factor-α agents, 54 vedolizumab, and 21 ustekinumab) were included. No significant differences were reported in any outcome, except for a higher rate of early VTE with anti-tumor necrosis factor-α agents (P = 0.047) and of late VTE with vedolizumab (P = 0.03). In the multivariate analysis, drug class was not associated with a higher risk of any early and late complications. Urgent colectomy increased the risk of any early (odds ratio [OR] 1.92, 95% confidence interval [CI] 1.06–3.48) complications, early hospital readmission (OR 4.79, 95% CI 1.12–20.58), and early redo surgery (OR 7.49, 95% CI 1.17–47.85). A high steroid dose increased the risk of any early complications (OR 1.96, 95% CI 1.08–3.57), early surgical site complications (OR 2.03, 95% CI 1.01–4.09), and early redo surgery (OR 7.52, 95% CI 1.42–39.82). Laparoscopic surgery decreased the risk of any early complications (OR 0.54, 95% CI 0.29–1.00), early infections (OR 0.39, 95% CI 0.18–0.85), and late hospital readmissions (OR 0.34, 95% CI 0.12–1.00). DISCUSSION: Preoperative tofacitinib treatment demonstrated a postoperative safety profile comparable with biologics in patients with UC undergoing colectomy.

16 April 2023 in World Journal of Gastrointestinal Endoscopy
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Journal Article
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MMMiltiadis Moutzoukis
Miltiadis Moutzoukis
KAkonstantinos argyriou
konstantinos argyriou
AKAndreas Kapsoritakis
Andreas Kapsoritakis
DCDimitrios Christodoulou
Dimitrios Christodoulou
Endoscopic luminal stenting: Current applications and future perspectives