Neuropeptide Y (NPY) is a 36-amino acid neuropeptide that acts as a neurotransmitter in the brain and in the autonomic nervous system. In the autonomic system it is produced mainly by neurons of the sympathetic nervous system and serves as a strong vasoconstrictor and also causes growth of fat tissue. In the brain, it is produced in various locations including the hypothalamus, and is thought to have several functions, including increasing food intake and storage of energy as fat, reducing anxiety and stress, reducing pain perception, affecting the circadian rhythm, reducing voluntary alcohol intake, lowering blood pressure and controlling epileptic seizures.
Neuropeptide Y (human, rat) Acetate is a highly conserved, 36-amino-acid peptide abundantly expressed in the central and peripheral nervous systems of mammals. As a member of the neuropeptide Y family, it is renowned for its multifaceted roles in modulating physiological and biochemical processes. Featuring remarkable structural stability and receptor-binding affinity, this compound is frequently employed in experimental protocols to unravel complex signaling pathways. Its chemical form as an acetate salt ensures enhanced solubility and compatibility with a variety of aqueous buffers, making it an excellent choice for laboratory investigations. Researchers value its cross-species relevance, as the peptide shares high sequence similarity between humans and rats, facilitating translational studies and comparative analyses in neurobiology and endocrinology.
Neuroscience Research: Neuropeptide Y (NPY) Acetate is extensively utilized in neuroscience research to elucidate its involvement in synaptic transmission, neuroplasticity, and neural circuit modulation. By applying the peptide to cultured neurons or brain tissue slices, scientists can investigate its regulatory effects on neurotransmitter release, neuronal excitability, and synaptic connectivity. The peptide's interaction with specific G protein-coupled receptors in the brain enables detailed mapping of receptor subtype functions and downstream signaling cascades. This research direction advances understanding of fundamental neurophysiological mechanisms and provides insights into the molecular basis of neurological disorders.
Metabolic Regulation Studies: NPY Acetate serves as a critical tool for exploring the neuroendocrine control of energy balance, appetite, and metabolism. In vitro and in vivo experiments employ the peptide to simulate or inhibit endogenous NPY activity, thereby assessing its effects on food intake, adiposity, and glucose homeostasis. Researchers utilize it to dissect the signaling pathways that link hypothalamic function to peripheral metabolic responses, offering a deeper understanding of how neuropeptides orchestrate complex physiological networks involved in energy regulation. Such studies are instrumental in identifying novel molecular targets for the modulation of metabolic processes.
Cardiovascular Function Analysis: Investigators harness the properties of this neuropeptide to study its role in cardiovascular physiology, particularly in relation to vasoconstriction, blood pressure regulation, and heart rate modulation. By administering the compound to isolated vascular tissues or animal models, researchers can observe its direct and indirect effects on vascular smooth muscle tone and autonomic nervous system activity. The peptide's capacity to interact with multiple receptor subtypes enables comprehensive evaluation of its influence on cardiovascular homeostasis, contributing to the broader understanding of neurovascular integration.
Stress Response Investigation: The acetate form of NPY is widely adopted in research focused on the neurobiological mechanisms underlying stress adaptation and resilience. Experiments involving its administration in animal models or cell cultures allow for the assessment of its impact on hypothalamic-pituitary-adrenal (HPA) axis activity, stress hormone release, and behavioral responses to acute or chronic stressors. By modulating the expression or signaling of NPY, scientists can delineate its protective or maladaptive roles in stress-related pathophysiology, supporting the development of innovative approaches to manage stress-induced neurobiological changes.
Behavioral Pharmacology: In the realm of behavioral science, NPY Acetate is employed to investigate its influence on a variety of behaviors, including anxiety, depression-like symptoms, and reward processing. Through targeted administration in animal models, researchers are able to assess its modulatory effects on emotional and motivational states, as well as its potential to interact with other neurotransmitter systems. This application provides valuable data on the neurochemical substrates of behavior and informs the ongoing search for novel modulators of affective and motivational processes.
Molecular Signaling Pathways: The study of intracellular signaling cascades activated by NPY is another significant research avenue. Scientists apply the peptide to diverse cell types to monitor downstream effects on gene expression, protein phosphorylation, and second messenger systems. These investigations elucidate the molecular mechanisms by which neuropeptides exert their pleiotropic effects, enhancing our understanding of cell signaling complexity and the integration of neuropeptide signals with other regulatory networks. By enabling precise manipulation of signaling events, Neuropeptide Y (human, rat) Acetate continues to drive innovation in neurobiology, physiology, and molecular pharmacology research.
Stress is defined as an adverse condition that disturbs the homeostasis of the body and activates adaptation responses. Among the many pathways and mediators involved, neuropeptide Y (NPY) stands out due to its unique stress-relieving, anxiolytic and neuroprotective properties. Stress exposure alters the biosynthesis of NPY in distinct brain regions, the magnitude and direction of this effect varying with the duration and type of stress. NPY is expressed in particular neurons of the brainstem, hypothalamus and limbic system, which explains why NPY has an impact on stress-related changes in emotional-affective behaviour and feeding as well as on stress coping. The biological actions of NPY in mammals are mediated by the Y1, Y2, Y4 and Y5 receptor, Y1 receptor stimulation being anxiolytic whereas Y2 receptor activation is anxiogenic. Emerging evidence attributes NPY a role in stress resilience, the ability to cope with stress. Thus there is a negative correlation between stress-induced behavioural disruption and cerebral NPY expression in animal models of post-traumatic stress disorder. Exogenous NPY prevents the negative consequences of stress, and polymorphisms of the NPY gene are predictive of impaired stress processing and increased risk of neuropsychiatric diseases. Stress is also a factor contributing to, and resulting from, neurodegenerative diseases such as Alzheimer’s, Parkinson’s and Huntington’s disease, in which NPY appears to play an important neuroprotective role. This review summarizes the evidence for an implication of NPY in stress-related and neurodegenerative pathologies and addresses the cerebral NPY system as a therapeutic target.
Reichmann, F., & Holzer, P. (2016). Neuropeptide Y: a stressful review. Neuropeptides, 55, 99-109.
Neuropeptide Y (NPY) is widely distributed in the human body and contributes to a vast number of physiological processes. Since its discovery, NPY has been implicated in metabolic regulation and, although interest in its role in central mechanisms related to food intake and obesity has somewhat diminished, the topic remains a strong focus of research concerning NPY signalling. In addition, a number of other uses for modulators of NPY receptors have been implied in a range of diseases, although the development of NPY receptor ligands has been slow, with no clinically approved receptor therapeutics currently available. Nevertheless, several interesting small molecule compounds, notably Y2 receptor antagonists, have been published recently, fueling optimism in the field. Herein we review the role of NPY in the pathophysiology of a number of diseases and highlight instances where NPY receptor signalling systems are attractive therapeutic targets.
Brothers, S. P., & Wahlestedt, C. (2010). Therapeutic potential of neuropeptide Y (NPY) receptor ligands. EMBO molecular medicine, 2(11), 429-439.
3. High fat diet and GLP-1 drugs induce pancreatic injury in mice
5. SERS spectrum of the peptide thymosin‐β4 obtained with Ag nanorod substrate
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