ArticleFish physiology and biochemistry2025
Piezo1/2 regulates gastric pepsinogen secretion of mandarin fish.
Article in Fish physiology and biochemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Pepsinogen plays a crucial role in the gastric digestion of carnivorous fish. Piezo signals in the stomach, which are typically associated with digestion through mechanical forces resulting from food intake, have been extensively investigated in mammals but have received comparatively limited attention in fish. To explore the physiological characteristics of gastric digestion and the regulatory mechanism of pepsinogen and piezo secretion in carnivorous fish, we investigated the gastric contents of juvenile mandarin fish (5.83 ± 1.32 g, 6.60 ± 0.46 cm) following feeding and developed a mathematical model for gastric emptying (feeding live baits at 26 °C) to briefly describe changes in gastric pressure. The expression patterns of piezo1/2 and pepsinogens were examined under normal feeding and water gavage (only gastric pressure) conditions. The results indicated that the weight of gastric contents gradually decreased over time, and the most appropriate model describing this trend was the square root model with a fitted equation of Y = - 0.0006t
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