Peptide YYvs neuropeptide Y Peptide YY (PYY) is a crucial gut hormone that plays a significant role in regulating appetite and influencing metabolic processes. Primarily secreted by specialized cells in the small and large intestines in response to nutrient ingestion, PYY acts as a satiety signal, communicating to the brain that a meal has been consumed and helping to reduce hunger. This action is vital for controlling food intake and can contribute to weight managementPeptide YY is a peptide that is secreted from the ileum and colon in response to nutrition andreduces appetiteand hence called “ileal brake.”. Research also indicates PYY’s involvement in other physiological functions, including influencing insulin secretion and gastric emptying.
The most well-established function of Peptide YY is its potent effect on appetite. When food enters the digestive tract, particularly fats and proteins, L-cells in the intestinal lining release PYY. This hormone then travels through the bloodstream to the brain, specifically targeting the hypothalamus15小时前—Peptide YY (PYY) – a hormone made in the gut thathelps control appetite and gut movement, and now appears to shape pain sensitivity. · Short- .... Here, it interacts with neuropeptide Y receptors, notably the Y2 receptor, to inhibit the signaling of appetite-stimulating neuronsPeptide YY (PYY), human | Gut Hormone. This inhibition leads to a reduced desire to eat, promoting a feeling of fullness or satiety. Studies have shown that PYY can decrease food intake significantly, acting as a critical "ileal brake" that helps regulate the rate at which food moves through the digestive system and signals fullness to the brain.Peptide YY in Type 2 Diabetes: A Complementary Gut ...
Beyond simply reducing hunger, Peptide YY contributes to overall energy homeostasis and can influence body weight. By decreasing food intake, PYY inherently reduces the amount of energy consumed. Furthermore, some research suggests that PYY may also play a role in increasing energy expenditure, although the mechanisms for this are less understoodPeptide YY (PYY), human | Gut Hormone. The observed reduction in PYY levels in individuals with obesity has led to its investigation as a potential factor contributing to weight gain2024年6月25日—PYYis a gut-derived hormone that plays a crucial role in regulating appetite and food intake. UnderstandingPYYmodulators and their mechanisms .... Consequently, PYY and its modulators are being evaluated for their therapeutic potential in treating obesity, aiming to leverage its appetite-suppressing effects.
While appetite regulation is its primary role, Peptide YY is involved in several other important bodily functions:
* Glucose Metabolism: PYY has been shown to promote glucose-dependent insulin secretion from the pancreas, which helps to lower blood sugar levels2025年12月18日—PYYthen acts on neighboring EC cells, triggering them to release the neurotransmitter serotonin, which activates pain-sensing nerve fibers. In .... It also suppresses glucagon output, another hormone that raises blood sugar.作者：L Degen·2005·被引用次数：488—This study shows that intravenous infusions of PYY 3–36decrease spontaneous food intake; the inhibition is, however, only significant at pharmacologic plasma ... This suggests a role for PYY in managing blood glucose, particularly after a meal.
* Gastric Emptying: PYY can slow down the rate at which the stomach empties its contents into the small intestine. This delayed gastric emptying can contribute to prolonged feelings of fullness and further aid in appetite control.Peptide YY Is a Regulator of Energy Homeostasis in Obese ...
* Gastrointestinal Transit: Similar to its effect on gastric emptying, PYY can also influence the overall transit time of food through the gastrointestinal tract.
* Pain Sensitivity: Emerging research indicates that PYY may also influence pain sensitivity, particularly in the gut. It can interact with neurotransmitter systems that modulate pain perception.
* Hepatitis B Virus Inhibition: In a less commonly discussed area, Peptide YY has demonstrated the ability to inhibit the transcription and replication of the hepatitis B virus by suppressing promoter/enhancer activity.
Several factors can influence circulating levels of Peptide YY. The most significant trigger for its release is the ingestion of food, particularly meals rich in protein and fat. The composition and energy content of a meal directly correlate with the amount of PYY released.2006年9月6日—The hormone, known as peptide YY (PYY), was earlier found by the researchers toreduce food intake by a third in both normal-weight and obese... Dietary protein, in particular, has been highlighted as a strong stimulator of PYY, contributing to the satiating effect often associated with protein-rich diets. Conversely, fasting states are characterized by lower PYY levels.What are PYY modulators and how do they work?
Peptide YY is a multifaceted gut hormone with a primary and well-defined role in suppressing appetite and promoting satiety. Its actions are critical for regulating food intake and contribute to the body's energy balance. Beyond appetite control, PYY participates in glucose metabolism, influences gastrointestinal motility, and may even play a role in pain perception and viral inhibition.Peptide YY (PYY), human | Gut Hormone Understanding what Peptide YY does provides valuable insight into the complex interplay between the gut and the brain in managing hunger, metabolism, and overall health. The ongoing research into PYY modulators holds promise for developing new strategies for managing metabolic disorders like obesity.
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