Pooled analysis of brain activity in irritable bowel syndrome and controls during rectal balloon distension.
Pooled analysis of brain activity in irritable bowel syndrome and controls during rectal balloon distension.
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DOI：
10.1111/j.1365-2982.2010.01635.x
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发表时间：
2011-04
影响因子：
3.5
通讯作者：
Kuo B
中科院分区：
文献类型：
--
作者：
Sheehan J;Gaman A;Vangel M;Kuo B
Brain-imaging literature of Irritable Bowel Syndrome (IBS) suggests an abnormal brain-gut communication. We analyzed the literature to evaluate and compare the aspects of brain activity in individuals with IBS and control subjects experiencing controlled rectal stimulation. PubMed was searched until September 2010. Data from 16 articles reporting brain activity during rectal balloon distensions in IBS compared to control groups was analyzed. Prevalence rates and pairwise activations were assessed using binomial distributions for 11 selected regions of interest. The data was aggregated to adjust for center effect. There was considerable variability in the literature regarding regions and their activity patterns in controls and individuals with IBS. There was no significant difference found in the thalamus, ACC, PCC, and PFC, however results show limited evidence of consensus for the Anterior Insula (AI) (p = 0.22). Pairwise activity results suggest that pairs involving the AI tend to have more consistent activity together than pairs which do not involve the AI (Posterior Insula and AI, p = 0.08; Posterior Cingulate Cortex and AI, p = 0.16), however no pairwise evaluation reached significance. Our pooled analysis demonstrates that the literature reports are quite heterogeneous but there is some evidence that there may be patterns of higher activity more common in individuals with IBS than in controls. A consensus, though, regarding study designs, analysis approach and reporting could create a clearer understanding of brain involvement in IBS pathophysiology.
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