Metabolic and Diagnostic Perspectives on Secondary Lactose Intolerance in Infants Through Fecal Lactose Measurement and Gut Microbiome Analysis - Summary - MDSpire
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Metabolic and Diagnostic Perspectives on Secondary Lactose Intolerance in Infants Through Fecal Lactose Measurement and Gut Microbiome Analysis
To investigate gut microbial composition and metabolic dysfunction in infants with secondary lactose intolerance (SLI) and to explore the potential utility of residual fecal lactose as a non-invasive indicator related to SLI, addressing the limitations of current diagnostic methods.
Key Findings:
SLI infants had significantly higher residual fecal lactose and lactate levels (p < 0.05), and reduced fecal short-chain fatty acids (SCFAs).
Microbiota profiling showed significant depletion of Bacteroidetes and specific Firmicutes, indicating dysbiosis.
In vitro assays revealed reduced acid, acetate, and propionate production (p < 0.05), with elevated lactate and gas production in SLI samples.
Interpretation:
Residual fecal lactose, alongside microbial and metabolic profiles, may serve as a non-invasive indicator of SLI, reflecting the underlying pathophysiology and potentially guiding clinical decisions.
Limitations:
Current diagnostic methods for lactose intolerance lack sensitivity and specificity, leading to potential misdiagnosis.
Challenges in obtaining fresh stool specimens from infants complicate testing, potentially affecting the accuracy of results.
Conclusion:
The study suggests that fecal lactose measurement, combined with microbial analysis, could improve non-invasive diagnostics for SLI in infants and guide future interventions, ultimately enhancing patient care.
A small observational study in collegiate football players found microbiome associations after nonconcussive head impacts, though findings were limited by severe underpowering and high attrition
