Subtopic Deep Dive
Medication Use in IBD Pregnancy
Research Guide
What is Medication Use in IBD Pregnancy?
Medication Use in IBD Pregnancy examines the efficacy and safety of biologics, 5-ASAs, steroids, and immunomodulators for maintaining remission in Crohn's disease and ulcerative colitis during gestation and lactation.
This subtopic analyzes flare rates, congenital anomalies, and breastfeeding compatibility from cohort studies and meta-analyses. Key papers include Cornish et al. (2006, 457 citations) meta-analysis on IBD pregnancy outcomes and Mahadevan et al. (2007, 373 citations) community-based study. Over 10 high-citation papers from 1981-2022 address placental transfer and fetal risks.
Why It Matters
Optimal medication management in IBD pregnancy prevents maternal flares, reducing preterm birth and low birth weight risks identified in Cornish et al. (2006) meta-analysis. Clinicians use data from Mahadevan et al. (2007) to balance remission maintenance with fetal safety for 20-30% of IBD patients of reproductive age. Guidelines by Torres et al. (2022) inform biologics continuation, minimizing morbidity in real-world settings like Northern California cohorts.
Key Research Challenges
Placental Transfer Risks
Biologics like infliximab cross the placenta, causing infant immunosuppression as in Cheent et al. (2010) fatal BCG case (394 citations). Vasiliauskas et al. (2006, 267 citations) confirmed transplacental transfer. Balancing maternal therapy against neonatal vaccine delays remains critical.
Flare Rate Assessment
Quantifying IBD flares during pregnancy is confounded by physiological changes, per Cornish et al. (2006) meta-analysis (457 citations). Mahadevan et al. (2007) reported outcomes but lacked granular medication dosing data. Standardized flare definitions are needed.
Lactation Safety Data
Limited evidence exists on medication excretion in breastmilk, complicating postpartum decisions. Francella et al. (2003, 330 citations) supported 6-mercaptopurine safety but newer biologics lack cohorts. Long-term infant outcomes require prospective studies.
Essential Papers
A meta-analysis on the influence of inflammatory bowel disease on pregnancy
Julie Cornish, Emile Tan, Julian Teare et al. · 2006 · Gut · 457 citations
Background: Inflammatory bowel disease (IBD) has a typical onset during the peak reproductive years. Evidence of the risk of adverse pregnancy outcomes in IBD is important for the management of pre...
Case Report: Fatal case of disseminated BCG infection in an infant born to a mother taking infliximab for Crohn's Disease
Kuldeep Cheent, Jonathan Nolan, Sohail Shariq et al. · 2010 · Journal of Crohn s and Colitis · 394 citations
We present the case of a 28 year old lady with refractory Crohn's Disease treated with infliximab throughout her pregnancy. Her baby was born healthy and received a Bacillus Calmette-Guérin (BCG) v...
Pregnancy Outcomes in Women With Inflammatory Bowel Disease: A Large Community-Based Study From Northern California
Uma Mahadevan, William J. Sandborn, De‐Kun Li et al. · 2007 · Gastroenterology · 373 citations
Lack of placental transfer of certolizumab pegol during pregnancy: results from CRIB, a prospective, postmarketing, pharmacokinetic study
Xavier Mariette, Frauke Förger, Bincy Abraham et al. · 2017 · Annals of the Rheumatic Diseases · 373 citations
The safety of 6-mercaptopurine for childbearing patients with inflammatory bowel disease: A retrospective cohort study
Andrew Francella, A Dyan, Carol Bodian et al. · 2003 · Gastroenterology · 330 citations
Pregnancy in inflammatory bowel disease: Effect of sulfasalazine and corticosteroids on fetal outcome
Michael Mogadam, William O. Dobbins, Burton I. Korelitz et al. · 1981 · Gastroenterology · 300 citations
Case Report: Evidence for Transplacental Transfer of Maternally Administered Infliximab to the Newborn
Eric A. Vasiliauskas, Joseph A. Church, Neil S. Silverman et al. · 2006 · Clinical Gastroenterology and Hepatology · 267 citations
Reading Guide
Foundational Papers
Start with Cornish et al. (2006, 457 citations) for meta-analysis baselines, then Mahadevan et al. (2007, 373 citations) for real-world cohorts, and Francella et al. (2003, 330 citations) for immunomodulator safety to build outcome evidence.
Recent Advances
Study Mariette et al. (2017, 373 citations) on certolizumab non-transfer and Torres et al. (2022, 254 citations) guidelines for current consensus on continuation.
Core Methods
Cohort comparisons (exposure vs. unexposed), meta-analyses of odds ratios, pharmacokinetic assays of cord/milk levels, and guideline syntheses using ECCO frameworks.
How PapersFlow Helps You Research Medication Use in IBD Pregnancy
Discover & Search
PapersFlow's Research Agent uses searchPapers and citationGraph to map high-citation works like Cornish et al. (2006, 457 citations) and its 50+ citers on IBD pregnancy risks. exaSearch uncovers guidelines like Torres et al. (2022), while findSimilarPapers links Mahadevan et al. (2007) to biologics safety cohorts.
Analyze & Verify
Analysis Agent employs readPaperContent on Cheent et al. (2010) to extract infliximab transfer details, then verifyResponse with CoVe checks claims against GRADE evidence grading for observational studies. runPythonAnalysis meta-analyzes flare rates from Mahadevan et al. (2007) and Francella et al. (2003) using pandas for pooled risks and statistical verification.
Synthesize & Write
Synthesis Agent detects gaps in lactation data post-Torres et al. (2022) guidelines, flagging contradictions between early steroids data (Mogadam et al., 1981) and biologics. Writing Agent applies latexEditText, latexSyncCitations for IBD protocols, and latexCompile for review manuscripts with exportMermaid timelines of medication exposure.
Use Cases
"What are pooled congenital anomaly rates for infliximab-exposed IBD pregnancies?"
Research Agent → searchPapers('infliximab IBD pregnancy anomalies') → Analysis Agent → runPythonAnalysis(pandas meta-analysis on Mahadevan 2007, Vasiliauskas 2006) → GRADE-graded pooled OR with CI output.
"Draft LaTeX guideline on 5-ASA use in ulcerative colitis pregnancy."
Synthesis Agent → gap detection (Cornish 2006, Mogadam 1981) → Writing Agent → latexEditText(draft section) → latexSyncCitations(Torres 2022) → latexCompile(PDF with tables).
"Find code for modeling placental transfer kinetics from IBD papers."
Research Agent → paperExtractUrls → Code Discovery → paperFindGithubRepo('certolizumab pharmacokinetics') → githubRepoInspect → runPythonAnalysis(adapt PK model from Mariette 2017 data).
Automated Workflows
Deep Research workflow conducts systematic review of 50+ IBD pregnancy papers starting with citationGraph on Cornish et al. (2006), yielding structured report with GRADE tables. DeepScan applies 7-step analysis to Cheent et al. (2010) case with CoVe checkpoints for transfer causality. Theorizer generates hypotheses on certolizumab safety from Mariette et al. (2017) PK data chained to flare models.
Frequently Asked Questions
What defines medication use in IBD pregnancy?
It covers biologics (infliximab, certolizumab), 5-ASAs, steroids, and 6-MP for remission in Crohn's/ulcerative colitis during gestation, focusing on flares, anomalies, and lactation (Torres et al., 2022).
What are key methods studied?
Cohort studies (Mahadevan et al., 2007), meta-analyses (Cornish et al., 2006), and PK studies (Mariette et al., 2017) assess outcomes; placental transfer measured via cord blood levels (Vasiliauskas et al., 2006).
What are landmark papers?
Cornish et al. (2006, 457 citations) meta-analysis; Cheent et al. (2010, 394 citations) infliximab risk; Francella et al. (2003, 330 citations) 6-MP safety.
What open problems persist?
Prospective lactation data for biologics; standardized flare metrics in pregnancy; long-term child outcomes beyond neonatal period.
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Part of the Pregnancy and Medication Impact Research Guide