ghrelin tagged posts

Gut Instincts: Intestinal Nutrient Sensors

A human intestinal organoid, displaying typical ‘budding crypts’ and a central ‘villus-like’ domain. The main intestinal cell types are shown in green, blue, red and purple. Membranes are yellow and nuclei cyan. Credit: Ninouk Akkerman, Yannik Bollen and Jannika Finger, Institute of Human Biology

A multi-institutional group of researchers led by the Hubrecht Institute and Roche’s Institute of Human Biology has developed strategies to identify regulators of intestinal hormone secretion. In response to incoming food, these hormones are secreted by rare hormone producing cells in the gut and play key roles in managing digestion and appetite. The team has developed new tools to identify potential ‘nutrient sensors’ on these hormone producing cells and study their function...

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New Appetite Control Mechanism found in Brain

NPGL apparently aims to maintain body mass at a constant, come feast or famine.

NPGL apparently aims to maintain body mass at a constant, come feast or famine.

Study explains why food looks even better when dieting. Up until now, scientists knew that leptin – a hormone released by fatty tissue, reduces appetite, while ghrelin – a hormone released by stomach tissue makes us want to eat more. These hormones, in turn, activate a host of neurons in the brain’s hypothalamus – the body’s energy control center. The discovery of NPGL by Professor Kazuyoshi Ukena of Hiroshima University shows that hunger and energy consumption mechanisms are even more complex than we realized – and that NPGL plays a central role in what were thought to be well-understood processes.

Professor Ukena first discovered NPGL in chickens after noticing that growing birds grew larger irrespective of d...

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