Publications by authors named "Gerassimos Mantzaris"

Background & Aims: Limited data exist regarding the implementation of the Global Leadership Initiative on Malnutrition (GLIM) criteria for diagnosing malnutrition in Crohn's disease (CD), and its association with CD prognosis. In the present study eighteen GLIM combinations and a combined one were implemented to identify differences in the prevalence of malnutrition and to investigate potential associations with clinical outcomes at 6 months.

Methods: Different methodologies to diagnose malnutrition were used at baseline, namely the Subjective Global Assessment (SGA), eighteen different combinations of phenotypic and etiologic GLIM criteria and a combined version based on all GLIM combinations (GLIMcv) to test differences in the estimated prevalence and outcomes' prognosis.

View Article and Find Full Text PDF

Objectives: Elderly hospitalized patients with inflammatory bowel disease (IBD) flare and concurrent Clostridioides difficile infection (CDI) are considered at high risk of IBD-related complications. We aimed to evaluate the short, intermediate, and long-term post-discharge complications among these patients.

Methods: A retrospective multicenter cohort study assessing outcomes of elderly individuals (≥60 years) hospitalized for an IBD flare who were tested for CDI (either positive or negative) and discharged.

View Article and Find Full Text PDF
Article Synopsis
  • * The most common outcomes assessed were clinical outcomes like remission and response (50.6%), with others including biomarkers, patient-reported outcomes, and safety measures, illustrating a shift towards more comprehensive evaluations using composite outcomes.
  • * Findings from the review will contribute to prioritizing key domains for developing a multi-component outcome measure in future CD research, highlighting the complexity and multidimensional nature of the disease.
View Article and Find Full Text PDF

Background: Inflammatory bowel disease (IBD) commonly affects patients of reproductive age. The effect of disease activity on the outcome of pregnancy and its impact on neonatal health are areas of intense research.

Methods: Α national retrospective study of pregnancies in women with IBD between 2010 and 2020 was carried out in 22 IBD reference centers in Greece.

View Article and Find Full Text PDF
Article Synopsis
  • This study compared the effectiveness and safety of vedolizumab and adalimumab over 12 months in patients with Crohn's disease who had not previously been treated with biologics.
  • Data from 218 patients treated with vedolizumab and 144 treated with adalimumab showed that vedolizumab resulted in higher rates of clinical remission and treatment persistence, but similar rates of clinical response and mucosal healing between the two drugs.
  • Fewer serious adverse events were observed with vedolizumab, suggesting it may be a safer option, although rates of serious infections and disease-related complications were comparable between both treatments.
View Article and Find Full Text PDF
Article Synopsis
  • Subcutaneous formulations of infliximab (IFX) and vedolizumab (VDZ) are effective treatments for inflammatory bowel diseases (IBDs) and this study evaluated the impact of switching from intravenous to subcutaneous forms.
  • The analysis included data from 231 adult patients with Crohn's disease or ulcerative colitis, assessing clinical remission rates at 3, 6, and 12 months post-switch.
  • Results showed that most patients remained in remission after switching, and switching early in the treatment process was associated with a lower risk of negative therapeutic outcomes.
View Article and Find Full Text PDF

Introduction: This analysis evaluated the relative performance of vedolizumab and anti-tumor necrosis factor alpha (anti-TNFα) agents in subpopulations of biologic therapy-naive patients with Crohn's disease (CD) and assessed whether patients in whom vedolizumab would have a larger treatment effect vs anti-TNFα agents could be identified.

Methods: Data were from EVOLVE, a real-world, multicountry, retrospective cohort study of patients with inflammatory bowel disease who initiated first-line biologic treatment with vedolizumab (n = 195) or anti-TNFα agents (n = 245). Prediction models for time to clinical remission were developed in vedolizumab- and anti-TNFα-treated patients and used to estimate effect scores, a metric of predicted comparative efficacy, for each patient.

View Article and Find Full Text PDF
Article Synopsis
  • A study compared the effectiveness of tofacitinib and ustekinumab as third-line treatments for patients with moderate to severe ulcerative colitis (UC) who did not respond to earlier therapies (anti-TNF and vedolizumab).
  • Out of 117 patients followed for about 11.6 months, 54% experienced disease progression, with ustekinumab being associated with a higher risk of progression compared to tofacitinib.
  • While tofacitinib showed better results in preventing disease progression, no major differences were noted in secondary outcomes or adverse events, highlighting the need for more extensive clinical trials to validate these findings.
View Article and Find Full Text PDF

Objectives: This study compared the real-world effectiveness and safety of α 4 β 7 -integrin inhibitor vedolizumab and anti-tumor necrosis factor alpha (anti-TNFα) inhibitor infliximab in biologic-naive patients with Crohn's disease (CD).

Methods: EVOLVE was a retrospective, multicenter, medical chart review of biologic-naive adults with inflammatory bowel disease receiving vedolizumab or anti-TNFα treatment as first-line biologics in Canada, Greece, and the USA. Twelve-month outcomes were analyzed in vedolizumab- or infliximab-treated patients with moderate-to-severe CD (and subgroups with complicated and noncomplicated CD) including cumulative rates of clinical response, clinical remission, and mucosal healing, and incidence rates of serious adverse events (SAEs) and serious infections (SIs).

View Article and Find Full Text PDF

Background: Outcomes after ileocolonic resection in Crohn's disease [CD] are heterogeneous, and a clear definition of postoperative recurrence remains to be determined. Our Endpoints Working Group of the International Organization for the study of Inflammatory Bowel Disease [IOIBD] aimed to standardise postoperative outcomes, to discuss which endpoints should be used for postoperative clinical trials, and to define those which could be used in trials or registries.

Methods: Based on a systematic review of the literature, recommendations and statements were drafted and sent to all IOIBD members for a first round of voting.

View Article and Find Full Text PDF

Many patients with inflammatory bowel disease (IBD) have persistent symptoms and disease activity despite the best available medical or surgical treatments. These patients are commonly referred to as having difficult-to-treat IBD and need additional therapeutic strategies. However, the absence of standard definitions has impeded clinical research efforts and comparisons of data.

View Article and Find Full Text PDF

Background & Aims: We evaluated the efficacy of herbal combination of curcumin-QingDai (CurQD) in active ulcerative colitis (UC).

Methods: Part I was an open-label trial of CurQD in patients with active UC, defined by a Simple Clinical Colitis Activity Index score of 5 or higher and a Mayo endoscopic subscore of 2 or higher. Part II was a placebo-controlled trial conducted in Israel and Greece, randomizing active UC patients at a 2:1 ratio to enteric-coated CurQD 3 g/d or placebo for 8 weeks.

View Article and Find Full Text PDF

Background: The Inflammatory Bowel Disease-Disk (IBD-Disk) is a physician-administered tool that evaluates the functional status of patients with Inflammatory Bowel Disease (IBD). The aim of our study was to validate the content of the IBD-Disk in a Greek cohort of IBD patients.

Methods: Two questionnaires [the IBD Disk and the IBD-Disability Index (IBD-DI)] were translated into Greek and administered to IBD patients at baseline visit, after 4 weeks and 6 months.

View Article and Find Full Text PDF

Both under-and over-nutrition are prevalent in patients with Crohn's Disease (CD). The aim of the present study was to evaluate dietary intake and compare it with relevant recommendations during active disease and remission, also taking into consideration the adequacy of energy reporting. Dietary quality was assessed through adherence to the Mediterranean diet and to the European dietary guidelines for cardiovascular disease prevention (CVD-score).

View Article and Find Full Text PDF

Background: The role of oxidative stress in the pathogenesis of colorectal carcinoma (CRC) has garnered considerable interest recently. Specific oxidative factors have been implicated in the pathogenesis of adenomatous polyps and ultimately adenocarcinoma.

Aim: To evaluate the effect of oxidative imbalance as quantified by specific serological markers in the development of sporadic colon adenocarcinoma.

View Article and Find Full Text PDF

Background And Aims: Post-inflammatory polyps [PIPs] are considered as indicators of previous episodes of severe inflammation and mucosal ulceration. Inflammatory bowel disease [IBD], namely Crohn's disease [CD] and ulcerative colitis [UC], exhibit a perpetuating, relapsing and remitting pattern, and PIPs are a frequent sequela of chronicity. The aim of this study was to determine whether a high PIP burden is associated with a more severe disease course in patients with IBD.

View Article and Find Full Text PDF
Article Synopsis
  • A study examined the effectiveness of biologic early prophylaxis for preventing endoscopic post-operative recurrence (ePOR) in Crohn's disease patients after ileocecal resection (ICR).
  • It included 297 patients and found that ePOR occurred in about 41.8% of cases within one year, with varying rates across treatment groups: 40.2% for anti-TNF, 33% for vedolizumab (VDZ), and 61.8% for ustekinumab (UST).
  • The results indicated no significant differences in ePOR risk between the anti-TNF therapy and the other biologics after adjusting for patient factors, suggesting early prevention was effective for around 60% of patients regardless of
View Article and Find Full Text PDF

There is growing evidence of vitamin D involvement in immune regulation and gut barrier function, suggesting that vitamin D may play a critical role in the development of inflammatory bowel disease (IBD). This review presents advances in the molecular mechanisms of vitamin D and vitamin D receptor (VDR) signaling with respect to barrier integrity and innate/adaptive immunity in the gut, as well as recent findings in uncovering the biological link between vitamin D-associated genetic variants and IBD. Experimental data have revealed a mechanistic basis for the contribution of vitamin D to the pathogenesis of IBD.

View Article and Find Full Text PDF

Background: Four EMA-approved vaccines against SARS-CoV-2 are currently available. Data regarding antibody responses to initial vaccination regimens in patients with inflammatory bowel diseases (IBD) are limited.

Methods: We conducted a prospective, controlled, multicenter study in tertiary Greek IBD centers.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

Studies exploring the accuracy of equations calculating Resting Energy Expenditure (REE) in patients with Crohn's disease are lacking. The aim of this study was to investigate the accuracy of REE predictive equations against indirect calorimetry in Crohn's disease patients. REE was measured using indirect calorimetry (mREE) after an overnight fasting.

View Article and Find Full Text PDF

Background & Aims: Clinical trials evaluating biologics and small molecules in patients with ulcerative colitis are predominantly excluding ulcerative proctitis. The objective of the Definition and endpoints for ulcerative PROCtitis in clinical TRIALs initiative was to develop consensus statements for definitions, inclusion criteria, and endpoints for the evaluation of ulcerative proctitis in adults.

Methods: Thirty-five international experts held a consensus meeting to define ulcerative proctitis, and the endpoints to use in clinical trials.

View Article and Find Full Text PDF

Since inflammatory bowel disease (IBD) patients were excluded from vaccine authorization studies, limited knowledge exists regarding perceptions and unfavorable effects of COVID-19 vaccination in this group. We aimed to investigate the real-world use and adverse events (AEs) of COVID-19 vaccines in Greek IBD patients. Fully vaccinated IBD patients followed in Greek centers were invited to participate.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessionbhnkn6652n2ga958m2er2pmcp2cp5hgv): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once