Revisión sistemática

No clasificado

Prevalence of anemia in inflammatory bowel diseases in european countries: a systematic review and individual patient data meta-analysis.

Año 2014
Revista Inflammatory bowel diseases
Enlaces Pubmed , DOI

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BACKGROUND:

The main objective is to determine the overall prevalence of anemia in inflammatory bowel diseases (IBD) in Europe.

METHODS:

A systematic literature search in PubMed and Embase was performed for studies published between January 2007 and May 2012. Eligible studies were included if they were original full-paper publications originated from Europe and if the authors agreed to provide their data. An overall prevalence of anemia in IBD, disease specific, and age-gender stratified basis prevalences were estimated. The influence of disease entity (Crohn's disease/ulcerative colitis), gender, age, disease activity (remission/active disease), and IBD-specific treatment strategies on the prevalence of anemia was analyzed by a mixed logistic regression model. Thereby, the factor country of origin was included as a random effect.

RESULTS:

Data were available for 2192 patients, mainly treated in tertiary referral centers. The overall prevalence of anemia in IBD patients was 24% (95% confidence interval, 18-31). Age-gender stratified prevalences were estimated for the age strata 18 to 29, 30 to 39, 40 to 49, 50 to 64, 65 to 74, >74 years and ranged from 18% to 35%. Patients receiving IBD-specific medication (P = 0.0002, odds ratio 1.54), and patients with active disease status (P < 0.0001, odds ratio 2.72) were significantly more likely to have anemia compared with patients not receiving IBD-specific medication or being in remission. Patients with ulcerative colitis tended to have anemia less likely than patients with Crohn's disease (P = 0.01, odds ratio 0.77).

CONCLUSIONS:

The overall prevalence of anemia in patients with Crohn's disease was 27% (95% confidence interval, 19-35) and 21% (95% confidence interval, 15-27) in patients with ulcerative colitis. Thereby, 57% of the anemic patients were iron deficient.

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Revisión sistemática

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Natural history of pediatric-onset inflammatory bowel disease: a systematic review.

Año 2012
Autores Abraham BP , Mehta S , El-Serag HB
Revista Journal of clinical gastroenterology
Enlaces Pubmed , PMC , DOI

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BACKGROUND/AIMS:

There has been no systematic review of natural history studies of pediatric-onset inflammatory bowel disease (IBD). We conducted a systematic review focused on understanding the long-term risks of growth failure, disease reclassification and extension, hospitalizations, cancer and death among patients with childhood IBD.

METHODS:

PubMed searches and subsequent data abstraction were performed by 2 independent investigators. Studies published full in english with a 5-year minimum average follow-up in at least 30 patients with IBD onset before age 18 years.

RESULTS:

We evaluated 41 total studies (only 2 population-based studies) with 3505 Crohn's disease (CD) patients, 2071 ulcerative colitis (UC) patients, and 461 indeterminate colitis (IC). Growth failure was reported in CD (10% and 56%) more often than UC (0% to 10%) or non-IBD controls. Improvements in growth occurred after surgical resection in patients with CD. There was an increase in disease reclassification over time from UC and indeterminate colitis diagnosis to CD diagnosis. Patients with CD had higher number of hospitalizations and hospital days per year in comparison with UC patients in most studies. The reported surgery rates in CD ranged between 10% and 72%; the colectomy rates in UC ranged between 0% and 50%. Cancers were reported in 6 CD patients during a total 18,270 patient-years (PY) follow-up, and 8 UC patients in 18,115 PY. Deaths directly related to IBD were 63 during 39,719 PY.

CONCLUSIONS:

Childhood-onset IBD patients had growth failure reported in patients with CD more often than those with UC, had a reclassification of disease type to CD over time. Higher rates of surgery and hospitalizations were found with CD than with UC. The risk of cancer and death is low in this population.

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Revisión sistemática

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Effect of 5-aminosalicylate use on colorectal cancer and dysplasia risk: a systematic review and metaanalysis of observational studies.

Año 2005
Autores Velayos FS , Terdiman JP , Walsh JM
Revista The American journal of gastroenterology
Enlaces Pubmed , DOI

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OBJECTIVES:

We performed a systematic review with metaanalysis of observational studies evaluating the association between 5-ASA use and colorectal cancer (CRC) or dysplasia among patients with ulcerative colitis.

METHODS:

We conducted a search of Medline Embase Biosis, Web of Science, Cochrane Collaboration, manually reviewed the literature, and consulted with experts. Studies were included if they 1) evaluated and clearly defined exposure to 5-aminosalicylates in patients with ulcerative colitis, 2) reported CRC or dysplasia outcomes, 3) reported relative risks or odds ratio or provided data for their calculations. Quantitative analysis using a random-effects model is presented.

RESULTS:

Nine studies (3 cohort, 6 case-control) containing 334 cases of CRC, 140 cases of dysplasia, and a total of 1,932 subjects satisfied all inclusion criteria. Five studies reported CRC outcomes alone, two studies reported separate cancer and dysplasia outcomes, and two studies reported a combined outcome of CRC or dysplasia. All primary estimates are homogenous. Pooled analysis showed a protective association between use of 5-aminosalicylates and CRC (OR=0.51; 95% confidence interval (CI): 0.37-0.69) or a combined endpoint of CRC/dysplasia (OR 0.51; 95% CI.: 0.38-0.69). 5-ASA use was not associated with a lower risk of dysplasia, although only two studies evaluated this outcome (OR=1.18; 95% CI.: 0.41-3.43).

CONCLUSION:

Pooled results of observational studies support a protective association between 5-aminosalicylates and CRC or a combined endpoint of CRC/dysplasia in patients with ulcerative colitis. Additional studies analyzing the effect of 5-ASA on risk of dysplasia are needed.

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Estudio primario

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Nonimmunity against hepatitis B virus infection in patients newly diagnosed with inflammatory bowel disease.

Año 2018
Revista Intestinal research
Enlaces Pubmed , PMC , DOI

Este artículo no está incluido en ninguna revisión sistemática

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BACKGROUND/AIMS:

This study aimed to elucidate the prevalence of hepatitis B virus (HBV) serologic markers in Korean patients newly diagnosed with, but not yet treated for inflammatory bowel disease (IBD).

METHODS:

We prospectively enrolled 210 patients newly diagnosed with IBD (109 with ulcerative colitis and 101 with Crohn's disease). Hepatitis B surface antigen (HBsAg), hepatitis B surface antibody (anti-HBs), and hepatitis B core antibody (anti-HBc) levels were measured and compared with those of 1,100 sex- and age-matched controls.

RESULTS:

The prevalence of chronic HBV infection (positive HBsAg, positive anti-HBc, and negative anti-HBs results) and past infection (negative HBsAg, positive anti-HBc, and positive or negative anti-HBs results) were not significantly different between the patients and controls (chronic HBV infection: IBD, 3.8% vs. control, 4.9%, P=0.596; past infection: IBD, 26.2% vs. control, 28.8%, P=0.625). The patients with IBD aged <20 years were at a higher susceptibility risk (nonimmune) for HBV infection than the controls (IBD, 41.5% vs. control, 22.4%; P=0.018). In the multivariate analysis, an age of <20 years (P=0.024) and symptom duration of ≥12 months before diagnosis (P=0.027) were identified as independent risk factors for nonimmunity against HBV infection.

CONCLUSIONS:

The patients newly diagnosed with IBD were susceptible to HBV infection. The frequency of nonimmunity was high, especially in the patients aged <20 years and those with a longer duration of symptoms before diagnosis. Therefore, it is necessary to screen for HBV serologic markers and generate a detailed vaccination plan for patients newly diagnosed with IBD.

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Estudio primario

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No Association Between Pseudopolyps and Colorectal Neoplasia in Patients With Inflammatory Bowel Diseases.

Año 2019
Revista Gastroenterology
Enlaces Pubmed , PMC , DOI

Este artículo no está incluido en ninguna revisión sistemática

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BACKGROUND & AIMS:

Patients with inflammatory bowel diseases who have postinflammatory polyps (PIPs) have an increased risk of colorectal neoplasia (CRN). European guidelines propose that patients with PIPs receive more frequent surveillance colonoscopies, despite limited evidence of this increased risk. We aimed to define the risk of CRN and colectomy in patients with inflammatory bowel diseases and PIPs.

METHODS:

We conducted a multicenter retrospective cohort study of patients with inflammatory bowel diseases who underwent colonoscopic surveillance for CRN, from January 1997 through January 2017, at 5 academic hospitals and 2 large nonacademic hospitals in New York or the Netherlands. Eligible patients had confirmed colonic disease with duration of at least 8 years (or any duration, if they also had primary sclerosing cholangitis) and no history of advanced CRN (high-grade dysplasia or colorectal cancer) or colectomy. The primary outcome was occurrence of advanced CRN according to PIP status; secondary outcomes were occurrence of CRN (inclusive of low-grade dysplasia) and colectomy.

RESULTS:

Of 1582 eligible patients, 462 (29.2%) had PIPs. PIPs were associated with more severe inflammation (adjusted odds ratio 1.32; 95% confidence interval [CI] 1.13-1.55), greater disease extent (adjusted odds ratio 1.92; 95% CI 1.34-2.74), and lower likelihood of primary sclerosing cholangitis (adjusted odds ratio 0.38; 95% CI 0.26-0.55). During a median follow-up period of 4.8 years, the time until development of advanced CRN did not differ significantly between patients with and those without PIPs. PIPs did not independently increase the risk of advanced CRN (adjusted hazard ratio 1.17; 95% CI 0.59-2.31). The colectomy rate was significantly higher in patients with PIPs (P = .01).

CONCLUSIONS:

In a retrospective analysis of data from 2 large independent surveillance cohorts, PIPs were associated with greater severity and extent of colon inflammation and higher rates of colectomy, but were not associated with development of any degree of CRN. Therefore, intervals for surveillance should not be shortened based solely on the presence of PIPs.

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Revisión sistemática

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Efficacy of Dietary Treatment for Inducing Disease Remission in Eosinophilic Gastroenteritis.

Año 2015
Revista Journal of pediatric gastroenterology and nutrition
Enlaces Pubmed , DOI

Este artículo incluye 30 Estudios primarios 30 Estudios primarios (30 referencias)

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OBJECTIVES:

Various dietary interventions have been used to treat patients with eosinophilic gastroenteritis (EGE). Concrete evidence as to the effectiveness of such treatments in inducing disease remission is, however, lacking. The aim of the study was to systematically review the efficacy of dietary therapies in inducing EGE remission.

METHODS:

We performed a systematic search for the MEDLINE, EMBASE, and SCOPUS libraries for studies investigating the efficacy of dietary interventions (in both histological and symptomatic remission) for children and adults with EGE and colitis.

RESULTS:

The search yielded 490 references; 30 were included in the review, with most of these references being "low-quality" individual cases or short case series. No significant publication bias was found. Elemental diets in children were linked to 75.8% of clinical improvement, but few of these patients underwent a histological evaluation. Allergy-testing results have been used scarcely in EGE. Empiric elimination of allergy-associated foods was the most commonly used option. The variable results in terms of symptom relief, however, were scarcely accompanied by histological confirmation. Clinical and methodological heterogeneity hindered the performance of quantitative summaries for the efficacy of dietary therapies in inducing disease remission.

CONCLUSIONS:

Symptomatic improvements reported for dietary treatment in EGE by most of the available literature are questionable because of the lack of objective evaluation of clinical changes and the very limited assessment of histological remission. Because of the relative lack of well-designed, high-quality studies, the unequivocal use of dietary treatment for patients with EGE and colitis cannot be supported. Further research should be undertaken.

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Revisión sistemática

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Telemedicine in Inflammatory Bowel Disease: Opportunities and Approaches.

Año 2015
Revista Inflammatory bowel diseases
Enlaces Pubmed , DOI

Este artículo incluye 10 Estudios primarios 8 Estudios primarios (10 referencias)

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: This review article summarizes the evidence about telemedicine applications (e.g., telemonitoring, teleconsulting, and tele-education) in the management of patients with inflammatory bowel disease (IBD), and we aim to give an overview of the acceptance and impact of these interventions on health outcomes. Based on the literature search on "inflammatory bowel disease," "Crohn's disease" and "ulcerative colitis" in combination with "e-health," "telemedicine," and "telemanagement," we selected 58 titles and abstracts published up to June 2014 and searched in PubMed, EMBASE, MEDLINE, Cochrane Database, Web of Science and Conference Proceedings. Titles and abstracts were screened for a set of inclusion criteria: e-health intervention, IBD as the main disease, and a primary study performed. Finally, 16 were included for full reading, data extraction, and critical appraisal of the evaluation. Most studies use telemonitoring (home telemanagement system or web portal) and telecare (real-time telephone and image) as telemedicine applications and assessed the feasibility and acceptance of these systems, adherence to treatment, quality of life, and patient knowledge, particularly in patients with ulcerative colitis. Furthermore, some of these studies evaluated the patients' empowerment, health care costs, and safety of telemonitoring in IBD. In conclusion, the health outcomes of telemedicine applications in IBD suggest that these could be implemented in clinical practice because they are safe and feasible applications that are well accepted by the patient and improve adherence, quality of life, and disease knowledge. Further studies with large sample sizes and complex diseases are needed to confirm these results.

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Estudio primario

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Isotretinoin is not associated with inflammatory bowel disease: a population-based case-control study.

Año 2009
Revista The American journal of gastroenterology
Enlaces Pubmed , DOI

Este artículo está incluido en 1 Síntesis amplia Síntesis amplias (1 referencia)

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OBJECTIVES:

There is anecdotal evidence that isotretinoin use is associated with development of colitis. We aimed at determining whether there is an association between isotretinoin use and development of inflammatory bowel disease (IBD).

METHODS:

The population-based University of Manitoba IBD Epidemiology Database and a control group matched by age, sex, and geographical residence were linked to the provincial prescription drug registry, a registry that was initiated in 1995. The number of users and duration of isotretinoin use were identified in both IBD cases and controls.

RESULTS:

We found that 1.2% of IBD cases used isotretinoin before IBD diagnosis, which was statistically similar to controls (1.1% users). This was also similar to the number of IBD patients who used isotretinoin after a diagnosis of IBD (1.1%). There was no difference between isotretinoin use before Crohn's disease compared with its use before ulcerative colitis.

CONCLUSIONS:

Patients with IBD were no more likely to have used isotretinoin before diagnosis than were sex-, age-, and geography-matched controls. Although there may be anecdotes of isotretinoin causing acute colitis, our data suggest that isotretinoin is not likely to cause chronic IBD.

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Revisión sistemática

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Serological antibodies in inflammatory bowel disease: a systematic review.

Año 2012
Autores Prideaux L , De Cruz P , Ng SC , Kamm MA
Revista Inflammatory bowel diseases
Enlaces Pubmed , DOI

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The diagnosis of inflammatory bowel disease (IBD) is traditionally based on a combination of clinical, endoscopic, histological, and radiological criteria. However, further testing is needed in cases of diagnostic uncertainty and in predicting disease course. This systematic review focuses on the potential for 10 serological antibodies to fill these roles: pANCA, ASCA, anti-OmpC, anti-CBir1, anti-I2, ALCA, ACCA, AMCA, anti-L, and anti-C. We discuss their prevalence in IBD and health; their role in disease diagnosis and risk stratification; their stability over time; their presence in unaffected relatives; their association with genetic variants; and differences across ethnic groups. Serological antibodies have some role in primary diagnosis and in differentiating between Crohn's disease and ulcerative colitis. In indeterminate colitis, preoperative measurement of serological antibodies can help to predict the likelihood of complications among patients undergoing pouch surgery. The combined presence and magnitude of a large panel of antibodies appear to be of value in predicting disease progression. There is currently insufficient evidence to recommend the use of antibody testing to predict responses to treatment or surgery in patients with IBD.

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