Biomaterial Database

Upregulation of the hypothalamo-neurohypophysial system and activation of vasopressin neurones attenuates hyperalgesia in a neuropathic pain model rat. 2022

Kazuhiko Baba, and Makoto Kawasaki, and Haruki Nishimura, and Hitoshi Suzuki, and Takanori Matsuura, and Naofumi Ikeda, and Teruaki Fujitani, and Yoshiaki Yamanaka, and Manabu Tsukamoto, and Hideo Ohnishi, and Mitsuhiro Yoshimura, and Takashi Maruyama, and Kenya Sanada, and Satomi Sonoda, and Kazuaki Nishimura, and Kentaro Tanaka, and Tatsushi Onaka, and Yoichi Ueta, and Akinori Sakai

Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan.

Arginine vasopressin (AVP) is a hypothalamic neurosecretory hormone well known as an antidiuretic, and recently reported to be involved in pain modulation. The expression kinetics of AVP and its potential involvement in the descending pain modulation system (DPMS) in neuropathic pain (NP) remains unclear. We investigated AVP expression and its effects on mechanical and thermal nociceptive thresholds using a unilateral spinal nerve ligation (SNL) model. All rats with SNL developed NP. Intensities of enhanced green fluorescent protein (eGFP) in the supraoptic and paraventricular nuclei, median eminence, and posterior pituitary were significantly increased at 7 and 14 days post-SNL in AVP-eGFP rats. In situ hybridisation histochemistry revealed significantly increased AVP mRNA expression at 14 days post-SNL compared with the sham control group. The chemogenetic activation of AVP neurones significantly attenuated mechanical and thermal hyperalgesia with elevated plasma AVP concentration. These analgesic effects were suppressed by pre-administration with V1a receptor antagonist. AVP neurones increased the neuronal activity of serotonergic dorsal raphe, noradrenergic locus coeruleus, and inhibitory interneurones in the spinal dorsal horn. These results suggest that the hypothalamo-neurohypophysial system of AVP is upregulated in NP and activated endogenous AVP exerts analgesic effects via the V1a receptors. AVP neurones may activate the DPMS.

UI	MeSH Term	Description	Entries
D009437	Neuralgia	Intense or aching pain that occurs along the course or distribution of a peripheral or cranial nerve.	Nerve Pain,Neurodynia,Paroxysmal Nerve Pain,Neuralgia, Atypical,Neuralgia, Iliohypogastric Nerve,Neuralgia, Ilioinguinal,Neuralgia, Perineal,Neuralgia, Stump,Neuralgia, Supraorbital,Neuralgia, Vidian,Neuropathic Pain,Atypical Neuralgia,Atypical Neuralgias,Iliohypogastric Nerve Neuralgia,Iliohypogastric Nerve Neuralgias,Ilioinguinal Neuralgia,Ilioinguinal Neuralgias,Nerve Neuralgia, Iliohypogastric,Nerve Neuralgias, Iliohypogastric,Nerve Pain, Paroxysmal,Nerve Pains,Nerve Pains, Paroxysmal,Neuralgias,Neuralgias, Atypical,Neuralgias, Iliohypogastric Nerve,Neuralgias, Ilioinguinal,Neuralgias, Perineal,Neuralgias, Stump,Neuralgias, Supraorbital,Neuralgias, Vidian,Neurodynias,Neuropathic Pains,Pain, Nerve,Pain, Neuropathic,Pain, Paroxysmal Nerve,Pains, Nerve,Pains, Neuropathic,Pains, Paroxysmal Nerve,Paroxysmal Nerve Pains,Perineal Neuralgia,Perineal Neuralgias,Stump Neuralgia,Stump Neuralgias,Supraorbital Neuralgia,Supraorbital Neuralgias,Vidian Neuralgia,Vidian Neuralgias
D006930	Hyperalgesia	An increased sensation of pain or discomfort produced by minimally noxious stimuli due to damage to soft tissue containing NOCICEPTORS or injury to a peripheral nerve.	Hyperalgesia, Tactile,Hyperalgesia, Thermal,Hyperalgia,Hyperalgia, Mechanical,Hyperalgia, Primary,Hyperalgia, Secondary,Allodynia,Allodynia, Mechanical,Allodynia, Tactile,Allodynia, Thermal,Hyperalgesia, Mechanical,Hyperalgesia, Primary,Hyperalgesia, Secondary,Hyperalgesic Sensations,Mechanical Allodynia,Mechanical Hyperalgesia,Tactile Allodynia,Thermal Allodynia,Allodynias,Hyperalgesias,Hyperalgesias, Thermal,Hyperalgesic Sensation,Mechanical Hyperalgia,Mechanical Hyperalgias,Primary Hyperalgia,Primary Hyperalgias,Secondary Hyperalgia,Secondary Hyperalgias,Sensation, Hyperalgesic,Sensations, Hyperalgesic,Thermal Hyperalgesia
D000700	Analgesics	Compounds capable of relieving pain without the loss of CONSCIOUSNESS.	Analgesic,Anodynes,Antinociceptive Agents,Analgesic Agents,Analgesic Drugs,Agents, Analgesic,Agents, Antinociceptive,Drugs, Analgesic
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001127	Arginine Vasopressin	The predominant form of mammalian antidiuretic hormone. It is a nonapeptide containing an ARGININE at residue 8 and two disulfide-linked cysteines at residues of 1 and 6. Arg-vasopressin is used to treat DIABETES INSIPIDUS or to improve vasomotor tone and BLOOD PRESSURE.	Argipressin,Vasopressin, Arginine,Arg-Vasopressin,Argipressin Tannate,Arg Vasopressin
D014667	Vasopressins	Antidiuretic hormones released by the NEUROHYPOPHYSIS of all vertebrates (structure varies with species) to regulate water balance and OSMOLARITY. In general, vasopressin is a nonapeptide consisting of a six-amino-acid ring with a cysteine 1 to cysteine 6 disulfide bridge or an octapeptide containing a CYSTINE. All mammals have arginine vasopressin except the pig with a lysine at position 8. Vasopressin, a vasoconstrictor, acts on the KIDNEY COLLECTING DUCTS to increase water reabsorption, increase blood volume and blood pressure.	Antidiuretic Hormone,Antidiuretic Hormones,beta-Hypophamine,Pitressin,Vasopressin,Vasopressin (USP),Hormone, Antidiuretic,beta Hypophamine
D015854	Up-Regulation	A positive regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins.	Receptor Up-Regulation,Upregulation,Up-Regulation (Physiology),Up Regulation
D051381	Rats	The common name for the genus Rattus.	Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus