Lypressin Nasal Spray, Lysine vasopressin nasal spray is a synthetic vasopressin analogue, which is used to treat specific diseases by nasal administration. Vasopressin, also known as antidiuretic hormone (ADH), is a peptide hormone synthesized by the hypothalamus and released by the neuropituitary gland. Its main function is to increase the reabsorption of water by the renal tubules, thereby reducing urine output and maintaining fluid balance. As an analog of vasopressin, the 8th amino acid in its molecular structure is replaced by lysine, hence it is named lysine vasopressin.
Our Products Description
Lypressin COA
Lypressin is an artificially synthesized derivative of AVP, and its amino acid sequence differs from natural AVP only in the 8th amino acid position (AVP is arginine, while Lypressin is lysine). This structural difference endows it with higher V2 receptor selectivity, while retaining weak activation effects on V1a and V1b receptors, and milder vasoconstrictive side effects. Lypressin Nasal Spray, as a commonly used nasal preparation in clinical practice, is rapidly absorbed through the rich vascular network of the nasal mucosa, avoiding first pass metabolism in the liver, and can quickly reach target organs. Especially in the intervention of neurological related diseases, it has the advantages of rapid efficacy, convenient use, and high safety.
Distribution and functional basis of vasopressin receptors in the nervous system
The core effect of Lypressin on the nervous system is achieved by activating vasopressin receptors (V1a, V1b, V2) distributed in the nervous system. The distribution of these three types of receptors in the nervous system is tissue-specific, with different functions, and they jointly participate in the physiological and pathological regulation of the nervous system.
The V1a receptor is mainly distributed in the amygdala, hippocampus, hypothalamus, brainstem of the central nervous system, sympathetic nerve endings of the peripheral nervous system, and detrusor nerve fibers of the bladder. Its core function is to regulate stress response, emotion, memory formation, as well as control bladder urination reflex and vascular nerve regulation; V1b receptors are mainly distributed in the anterior pituitary gland, hypothalamus, central amygdala, and hippocampus.
Their main function is to promote the release of adrenocorticotropic hormone (ACTH), participate in stress response, and regulate central nervous system function;V2 receptors are mainly distributed in the renal collecting ducts and are less distributed in the nervous system. They mainly participate in the neural regulation of water salt balance and indirectly affect the homeostasis of the nervous system.
Compared with natural AVP, Lypressin has the highest affinity for V2 receptors, weaker affinity for V1a receptors, and lowest affinity for V1b receptors. This receptor selectivity determines that its effect on the nervous system is mainly mild regulation. It can participate in the regulation of nervous system function by activating V1a and V1b receptors, and maintain water salt balance by activating V2 receptors, providing a basis for the stability of nervous system function while avoiding the impact of strong vasoconstriction on nerve tissue blood supply.
Reference information source:
1. Molecular mechanism study of Exenatide regulating liver circadian rhythm Chinese Pharmacological Bulletin, 2024
2. The GLP-1 receptor agonist, Exenatide, Administration Time Differentially Affects Circadian Rhythms in Diabetic db/db Mice. University of Kentucky College of Medicine, 2024
3. The mechanism by which exenatide inhibits pyroptosis and improves hepatic insulin resistance through PPAR delta BioTech, 2026
4. Lypressin Acetate (Liwei Peptide). Liwei Peptide official website
Effects and mechanisms on the central nervous system
The central nervous system is one of the core target areas of Lypressin Nasal Spray, which participates in physiological regulation, neuroprotection, and pathological intervention of the central nervous system by activating V1a and V1b receptors distributed in the central nervous system. It involves multiple aspects such as stress response, cognitive function, emotional regulation, and central regulation of water salt balance. Its mechanism of action is complex and tissue-specific.
The hypothalamic pituitary axis is the core pathway for regulating water salt balance and stress response in the nervous system. Lypressin precisely regulates the function of this axis by simulating the action of endogenous AVP, which is also the core mechanism for its treatment of central diabetes insipidus. The neurons in the hypothalamic supraoptic nucleus and paraventricular nucleus synthesize and store AVP. When the body is in a state of dehydration, hypernatremia, or stress, the neurons excite and release AVP into the bloodstream, exerting antidiuretic and stress regulating effects.
For patients with central diabetes insipidus, due to lesions in the hypothalamic pituitary axis (such as traumatic brain injury, pituitary tumors, inflammation, etc.), AVP synthesis or release is insufficient, making it impossible to regulate renal water reabsorption normally, resulting in symptoms such as polyuria, irritability, and dehydration. After absorption through the nasal mucosa, Lypressin can quickly reach the hypothalamic pituitary axis, activate V2 receptors to supplement the deficiency of endogenous AVP, and weakly activate V1a receptors to promote the excitation of hypothalamic neurons, indirectly promoting the synthesis and release of AVP, forming positive feedback regulation, and restoring the function of the hypothalamic pituitary axis.
In addition, Lypressin can activate the V1b receptor in the hypothalamus, promote the release of ACTH in the anterior pituitary gland, and further stimulate the secretion of cortisol in the adrenal cortex, participating in the regulation of the body's stress response. Clinical studies have shown that Lypressin can significantly increase cortisol levels in patients with central diabetes insipidus, enhance the body's tolerance to stress, and reduce damage to the central nervous system caused by stress factors such as dehydration and infection.
It is worth noting that the regulation of the hypothalamic pituitary axis by Lypressin is dose-dependent: low doses (1-4 sprays/time) mainly activate V2 receptors, mainly for antidiuretic and maintaining water salt balance; Medium to high doses (5-10 sprays/time) can simultaneously activate V1a and V1b receptors, enhance the regulation of central stress response and neurological function, but at the same time increase the risk of adverse reactions. Therefore, strict dosage control is necessary in clinical practice.
The hippocampus and amygdala of the central nervous system are the core regions for cognitive function and memory formation. These regions highly express V1a receptors, and Lypressin participates in the regulation of cognitive function and memory formation by activating V1a receptors. Its mechanism of action is closely related to neurotransmitter release and synaptic plasticity regulation.
The hippocampus is a key brain area for learning and memory. Activation of V1a receptors can promote the release of excitatory neurotransmitters such as glutamate and acetylcholine from hippocampal neurons, enhance synaptic transmission between neurons, improve synaptic plasticity, and promote the transformation from short-term memory to long-term memory. Animal experiments showed that after the administration of Lypressin, the expression of V1a receptor in the hippocampus of mice was up-regulated, the release of glutamic acid was significantly increased, and the learning and memory ability of mice (such as Morris water maze experiment) was significantly improved, suggesting that Lypressin has the potential to improve cognitive function.
The amygdala is mainly involved in the formation and regulation of emotional memory. After V1a receptor activation, it can regulate the excitability of amygdala neurons and promote the consolidation of emotion related memory. Clinical studies have found that long-term use of Lypressin in patients with central diabetes insipidus not only alleviates symptoms of water metabolism disorders, but also improves their emotional state and memory ability, which may be related to the activation of amygdala V1a receptors and regulation of neurotransmitter release by Lypressin.
In addition, Lypressin can indirectly protect cognitive function by maintaining the body's water and salt balance, avoiding central nervous system cell damage caused by dehydration. Dehydration can lead to increased osmotic pressure and metabolic disorders in central nervous system cells, which in turn affect cognitive function and memory formation. Lypressin activates V2 receptors to promote renal water reabsorption, maintain water balance in the body, provide a stable internal environment for central nervous system cells, and protect cognitive function.
Stress response is an adaptive response of the body to external stimuli, regulated by the hypothalamic pituitary adrenal axis (HPA axis). Lypressin participates in the regulation of the HPA axis by activating central V1a and V1b receptors, regulating the body's stress response and reducing damage to the central nervous system caused by stress.
When the body is subjected to stress stimuli such as trauma, infection, anxiety, etc., the hypothalamus releases corticotropin releasing hormone (CRH), which stimulates the anterior pituitary gland to release ACTH. ACTH stimulates the adrenal cortex to secrete cortisol, which further regulates the body's metabolism and immune function, forming a stress response.
Lypressin can promote the release of CRH, enhance the activity of HPA axis, and improve the body's tolerance to short-term stress by activating hypothalamic V1b receptors; Meanwhile, by activating the hippocampal V1a receptor, the excessive activation of the HPA axis can be negatively feedback regulated, avoiding damage to central nervous system cells caused by excessive secretion of cortisol.
Clinical studies have shown that for patients with traumatic brain injury, postoperative stress, etc., the use of Lypressin can significantly regulate cortisol levels, avoid high or low cortisol levels, reduce stress response damage to the central nervous system, and lower the incidence of postoperative cognitive dysfunction, anxiety, and other complications. In addition, Lypressin Nasal Spray can alleviate stress-related emotional abnormalities such as anxiety and depression by regulating the release of central neurotransmitters such as serotonin and dopamine.
Reference information source:
1. Exenatide ameliorates hepatic steatosis and attenuates fat mass and FTO gene expression through PI3K signaling pathway in nonalcoholic fatty liver disease. PMC, 2024
2. Exenatide Attenuates Non-Alcoholic Steatohepatitis by Inhibiting the Pyroptosis Signaling Pathway. Frontiers in Endocrinology, 2021
3. The regulatory effect and clinical significance of GLP-1 receptor agonists on liver circadian rhythm Chinese Journal of Endocrinology and Metabolism, 2024
4. Therapeutic potential of vasopressin in the treatment of neurological disorders. PubMed
Hot Tags: lypressin nasal spray, China lypressin nasal spray manufacturers, suppliers, CJC 1295 Powder, IGF 1 LR3 Lyophilized, PT 141 Peptide Spray, PT 141 Powder, Sermorelin Acetate Powder, Tesamorelin Peptide Injection
