P228 Cytomegalovirus Infection: is it a cause of flare-up in inflammatory bowel diseases?
Notice bibliographique
Résumé
Abstract Background The presence of CMV in blood is quite common in patients with severe flares of ulcerative colitis (UC) and Crohn’s disease (CD) and seems to predict an adverse outcome. The impact of antiviral treatment on CMV in this setting (indications and drug options) is an unresolved issue. Our aim was to reassess the CMV role in patients with IBD hospitalised for severe exacerbations, analysing the relationship between CMV positivity, clinical characteristics, antiviral therapy and disease outcomes. Methods We evaluated a homogeneous cohort of 97 consecutive patients with IBD hospitalised from 2012 to 2018. Data regarding age, gender, smoke, familial predisposition, type of IBD, extent, according to Montreal classification, disease activity (clinical and endoscopic), therapy at the time of relapse were registered in a dedicated database. CMV was tested by PCR in whole blood. The relationship between antiviral therapy and disease outcomes (rate of colectomy, mortality) was analysed. Results Among the 97 patients, 51 were females. In the UC group (67 patients, 69.1%), mean age was 48,8, SD ± 17,7 whereas in the CD group (30 patients, 31%), mean age was 39,9 years (SD ± 15,2). Fifteen per cent of patients had a family predisposition for IBD. There were no differences at baseline between UC and CD, except disease duration (longer in UC) and therapy at the time of relapse (high dose steroids more common in UC). Thirty-one patients (32 %) tested positive for CMV on PCR. Smoking habit, shorter disease duration, therapy on admission (high dose steroid and/or immunomodulators) and endoscopic activity assessed by Mayo endoscopic sub-score were the variables significantly related to CMV positivity. Antiviral therapy was adopted in 22% of patients and the decision to treat was based on clinical judgement and viral load. Treated patients had higher endoscopic activity than untreated (Mayo sub-score 3 vs. 2,6, p < 0,004). The mean hospital duration was longer in treated patients 22.3 ( ± 11.1) days, vs. 14,8(+/−8,6) days. 3 patients underwent surgery within 90 days, 2 patients died; all of them were positive for CMV DNA. No significant differences were observed on either colectomy or mortality rate in relation to the use of antiviral therapy. Conclusion This single-centre study confirms that the CMV reactivation during disease flares of IBD is common and related to disease duration, severe endoscopic lesions, and immunosuppression (high dose steroids and/or immunomodulators).Antiviral drugs do not seem to modify surgical outcomes or mortality but increase the hospitalisation length. However, the retrospective design and the limited sample size of the study do not allow to draw definitive conclusions: the real impact on outcome and the role of antiviral therapy will require adequately powered prospective studies.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,004 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,002 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,003 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».