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Neuropituitary Hormones in Metabolic Disorders

A special issue of Current Issues in Molecular Biology (ISSN 1467-3045). This special issue belongs to the section "Biochemistry, Molecular and Cellular Biology".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 2931

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Guest Editor
Department of Precision and Regenerative Medicine, School of Medicine, University of Bari Aldo Moro, P.za 6 G. Cesare 11, 70100 Bari, Italy
Interests: oxytocin; thermoregulation; skeletal muscle; obesity; Prader–Willi syndrome
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Dear Colleagues,

Oxytocin and vasopressin are highly conserved 9-amino acid neuropeptides differing by only two amino acids. Oxytocin and vasopressin are produced in overlapping regions of the supraoptic and paraventricular nuclei of the hypothalamus and secreted by parvocellular neurons directly into multiple brain regions that simultaneously project both to forebrain regions and to the posterior pituitary gland, where they are stored until release to the peripheral circulation. Oxytocin receptors and vasopressin receptors are structurally similar, and both neuropeptides can bind to both receptors but with different affinities. Oxytocin is known for its effects of uterus contractility and lactation while vasopressin has antidiuretic action on the kidney and mediates vasoconstriction of the peripheral vessels. Overall, oxytocin and vasopressin exert central and peripheral effects that can be distinct, opposing, or complementary. However, about 20 years ago, genetic knockout mice lacking oxytocin or oxytocin receptor genes shed new light on the physiological functions of the oxytocinergic system. Mice lacking oxytocin developed late-onset obesity, abnormal thermoregulation, metabolic syndrome, and sarcopenia despite normal food consumption and a low sympathetic tone. These discoveries established that beyond the classical role of oxytocin in parturition and lactation oxytocin has a wide range of physiological functions and oxytocin-deficiency contributes to clinical morbidity. Oxytocin-deficiency causes a series of diseases and this sets the foundation for human research studies aimed at understanding these diseases and the potential of pharmacological treatment with oxytocin. Indeed, some symptoms described in animal models lacking oxytocin resemble the clinical phenotype of patients with hypothalamic pituitary damage supporting recognition of “oxytocin-deficiency as a new clinical condition”. Moreover, an oxytocin-deficient state has been identified in individuals with vasopressin deficiency, and oxytocin administration is currently under investigation for the treatment of central diabetes insipidus. Recent clinical research has focused on the effects of oxytocin administration in clinical conditions such as obesity and diabetes mellitus, sarcopenia and muscle maintenance, autism spectrum disorder, anorexia nervosa, anxiety, and hypothalamic diseases such as Prader–Willi syndrome, as well as in individuals with hypopituitarism due to brain tumours located in the hypothalamic and pituitary regions, such as craniopharyngioma. The aim of this Special Issue is to collect original research articles and review articles that explain and summarize current knowledge on the oxytocin and vasopressin system and new disorders related to oxytocin deficiency and vasopressin deficiency, together with diagnostic challenges and therapeutic avenues to advance the field.

Dr. Claudia Camerino
Guest Editor

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Keywords

  • oxytocin
  • vasopressin
  • thermoregulation
  • obesity
  • Prader–Willi syndrome
  • autism spectrum disorder
  • anorexia nervosa
  • craniopharyngioma
  • metabolic disorders
  • hypothalamic pituitary disorders
  • oxytocin-deficiency
  • vasopressin-deficiency

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Published Papers (2 papers)

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Research

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21 pages, 5220 KB  
Article
The Corrective Role of Melatonin in Synergism of Dark Deprivation and CCl4 Intoxication in the Pathogenesis of Liver Damage a in Rats
by Sevil A. Grabeklis, Liudmila M. Mikhaleva, Alexander M. Dygai, Rositsa A. Vandysheva, Anna I. Anurkina, Maria A. Kozlova and David A. Areshidze
Curr. Issues Mol. Biol. 2025, 47(12), 1046; https://doi.org/10.3390/cimb47121046 - 15 Dec 2025
Cited by 1 | Viewed by 595
Abstract
Circadian rhythm disruption induced by exposure to light—excessive in duration and intensity (dark deprivation)—and the impact of hepatotoxins are both significant risk factors for liver pathology. The purpose of this research was to evaluate the potentially synergistic effects of continuous lighting and carbon [...] Read more.
Circadian rhythm disruption induced by exposure to light—excessive in duration and intensity (dark deprivation)—and the impact of hepatotoxins are both significant risk factors for liver pathology. The purpose of this research was to evaluate the potentially synergistic effects of continuous lighting and carbon tetrachloride (CCl4) toxicity on the structural and functional organization and daily (circadian) rhythmicity of the liver in rats, as well as to look at the corrective capability of exogenous melatonin under such influences. The experiment was conducted on 200 outbred 6-month-old Wistar rat males, which were distributed into five groups, including a control (normal light/dark cycle), dark deprivation (constant light), CCl4 intoxication, and combined exposure to CCl4 and dark deprivation with or without melatonin administration (0.3 mg/kg). Histological, immunohistochemical (Ki-67, Per2, and Bmal1), biochemical, and ELISA methods were used. Circadian rhythms were analyzed using cosinor. It was shown that dark deprivation and CCl4 intoxication act synergistically, potentiating liver damage. The most severe necrosis (54.17 ± 9.13%), steatosis (57.85 ± 12.14%), and suppression of regenerative potential (decreased proportion of binucleated hepatocytes to 2.17 ± 0.21%) were observed in the group with combined exposure. This correlated with a substantial decline in melatonin content in blood plasma (7.85 ± 2.1 pg/mL) and a profound disruption in circadian rhythms. Administration of exogenous melatonin exerted pronounced hepatoprotective and chronotropic effects: it significantly reduced pathological changes (necrosis reduced to 16.35 ± 6.17%), stimulated regeneration (binucleated hepatocytes increased to 13.57 ± 0.81%), and restored the circadian rhythms of the studied parameters to levels close to those of the control. The key pathogenetic link in the potentiation of CCl4 hepatotoxicity under dark deprivation is light-induced deficiency of endogenous melatonin. Exogenous melatonin demonstrated high efficacy in correcting both structural and functional damage and liver desynchronosis, confirming its therapeutic potential under conditions of combined exposure to chronodisruptors and toxins. Full article
(This article belongs to the Special Issue Neuropituitary Hormones in Metabolic Disorders)
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Review

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22 pages, 752 KB  
Review
Oxytocin Deficiency in Childhood and Adolescence: Clinical Features, Diagnostic Challenges and Therapeutic Perspectives
by Roberto Paparella, Arianna Bei, Irene Bernabei, Cinzia Fiorentini, Norma Iafrate, Roberta Lucibello, Lavinia Marchetti, Francesca Pastore, Vittorio Maglione, Marcello Niceta, Marco Fiore, Brunella Caronti, Mario Vitali, Ida Pucarelli and Luigi Tarani
Curr. Issues Mol. Biol. 2025, 47(12), 982; https://doi.org/10.3390/cimb47120982 - 25 Nov 2025
Cited by 1 | Viewed by 1672
Abstract
Oxytocin (OXT), traditionally linked to reproductive physiology, is now recognized as an important regulator of metabolic, skeletal, and socio-emotional processes. In children and adolescents, oxytocin deficiency (OXT-D) represents a significant but frequently underdiagnosed neuroendocrine disturbance, particularly in hypothalamic–pituitary disorders and syndromic conditions such [...] Read more.
Oxytocin (OXT), traditionally linked to reproductive physiology, is now recognized as an important regulator of metabolic, skeletal, and socio-emotional processes. In children and adolescents, oxytocin deficiency (OXT-D) represents a significant but frequently underdiagnosed neuroendocrine disturbance, particularly in hypothalamic–pituitary disorders and syndromic conditions such as Prader–Willi and Schaaf–Yang. Experimental and clinical evidence suggests that OXT-D may contribute to altered appetite regulation, reduced energy expenditure, impaired bone health, and socio-emotional vulnerability, even when other pituitary axes are adequately replaced. Diagnostic evaluation remains challenging due to OXT’s short half-life, pulsatile secretion, and the limited reliability of current assay platforms, which restrict the clinical utility of peripheral measurements or dynamic testing in pediatric practice. Intranasal OXT—the most extensively studied therapeutic approach—shows good short-term tolerability and context-dependent behavioral benefits, though long-term efficacy and safety remain insufficiently defined. Advancing the field will require standardized diagnostic criteria, more reliable biomarkers, and precision-medicine strategies accounting for developmental stage and genetic background. This review summarizes current knowledge on pediatric OXT-D and highlights priorities for future translational and clinical research. Full article
(This article belongs to the Special Issue Neuropituitary Hormones in Metabolic Disorders)
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