研究によると、腸と口腔の微生物がピーナッツアレルギーが軽度な反応にとどまるか生命を脅かすものになるかを決定する可能性がある。マウスとヒトを対象とした研究で、アナフィラキシーリスクを低減する可能性のある特定の細菌が指摘された。科学者らは、重症反応を軽減するための潜在的な治療としてプロバイオティクスを提案している。
ピーナッツアレルギーは、免疫系がこのマメ科植物のタンパク質を脅威と誤認し、過剰な抗体と炎症反応を引き起こすことで発生する。症状はかゆみや腫れから嘔吐まで多岐にわたり、重症例では呼吸困難を伴うアナフィラキシーを引き起こし、致命的になることがある。
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Researchers at APC Microbiome Ireland at University College Cork report that early-life exposure to a high-fat, high-sugar diet altered feeding behavior and appetite-related brain pathways in mice into adulthood, even after the animals returned to a standard diet and normal body weight. The team also found that a specific Bifidobacterium strain and a prebiotic fiber mix helped mitigate some of these long-term effects.
Researchers led by Helmholtz Munich report that some gut-dwelling bacteria — including strains not typically considered harmful — possess syringe-like molecular machinery that can deliver bacterial proteins into human cells, affecting immune and metabolic signaling. The work also links these bacterial “effector” genes to Crohn’s disease–associated microbiome patterns, though the authors say more studies are needed to determine how the mechanism influences disease.
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Eliminating sucrose from a low-fat diet worsened glucose tolerance and altered the gut microbiome in mice over 16 weeks, according to results presented on Saturday, June 13, 2026, at ENDO 2026, the Endocrine Society’s annual meeting in Chicago.
A recent study has uncovered additional health benefits of coffee, including its effects on the microbiome, inflammation, and mood. The research shows that regular consumption influences the gut-brain axis, with even decaf offering perks. These findings highlight interactions beyond caffeine's stimulant properties.