Melatonin in Normal Physiology and Disease, 2nd Edition

A special issue of Biomolecules (ISSN 2218-273X). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 773

Special Issue Editor


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Guest Editor
Center of Research in Medical Pharmacology, University of Insubria, 21100 Varese, Italy
Interests: circadian rhythms; melatonin; immune system; adrenergic modulation of hematopoiesis
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Special Issue Information

Dear Colleagues, 

Following a very successful first run, we are pleased to announce the launch of a second edition of this Special Issue on “Melatonin in Normal Physiology and Disease”.

In mammals, melatonin is synthesized in virtually all cells of the body, where it functions as an autocrine or paracrine messenger and as a cytoprotective agent by virtue of its detoxifying and antioxidant properties. However, it is the melatonin synthesized in the pineal gland that circulates in the blood in a circadian fashion, playing a vital role in the body. In fact, pineal melatonin transduces light as a basic environmental cue into an endocrine signal capable of synchronizing the entire organism during the photoperiod. As a result, virtually all physiological processes are affected and deranged pineal melatonin production is associated with various pathological states. Melatonin activates two high-affinity membrane receptors, the specific contribution of which to most of its effects is still not clear. This Special Issue aims to gather research articles or reviews on the role of melatonin in normal physiology, including emerging roles such as neurotrophic effects, human reproduction, and mesenchymal stem cell function. In addition, papers on the pathological significance of disturbed melatonin rhythms, as well as the related therapeutic possibilities in inflammatory disorders, skin diseases, viral and bacterial infections, neurodegenerative diseases, cancer, osteoporosis, and autoimmunity, are also welcome.

Dr. Georges Maestroni
Guest Editor

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Keywords

  • circadian rhythms
  • immunity
  • skin
  • reproduction
  • aging
  • viral and bacterial infection
  • inflammation
  • mesenchymal stem cells
  • cancer
  • neurodegenerative diseases
  • osteoporosis

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Published Papers (1 paper)

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Research

15 pages, 6772 KiB  
Article
Melatonin MT1 Receptor Expression in Luminal Invasive Ductal Breast Carcinoma in Postmenopausal Women
by Leda Pistiolis, Sahar Alawieh, Thorhildur Halldorsdottir, Anikó Kovács and Roger Olofsson Bagge
Biomolecules 2025, 15(4), 581; https://doi.org/10.3390/biom15040581 - 15 Apr 2025
Viewed by 324
Abstract
Laboratory and animal studies indicate that melatonin exerts a negative impact on breast cancer progression and metastasis. These actions are both receptor-dependent and -independent. Of the two transmembrane melatonin receptors identified in humans, breast cancer expresses only MT1. The aim of this study [...] Read more.
Laboratory and animal studies indicate that melatonin exerts a negative impact on breast cancer progression and metastasis. These actions are both receptor-dependent and -independent. Of the two transmembrane melatonin receptors identified in humans, breast cancer expresses only MT1. The aim of this study was to investigate the expression of MT1 in hormone-receptor-positive, HER2-negative invasive ductal breast carcinoma in postmenopausal women and its possible correlations with clinicopathological parameters and survival. A total of 118 patients with luminal A/B primary breast cancer with or without axillary metastases were identified. The MT1 receptor expression was immunohistochemically assessed as a percentage of stained cells and a weighted index (WI) (percentage multiplied by staining intensity). Most tumor samples (84.7%) and metastasized lymph nodes (96%) stained positive for MT1, with varying intensity. No statistically significant correlations were found between the MT1 expression or the WI in the primary tumor and the patient and tumor characteristics, or the MT1 and WI in the metastasized lymph nodes. The survival analysis did not reveal a significant effect of MT1 expression or the WI on the risk of recurrence or survival. Full article
(This article belongs to the Special Issue Melatonin in Normal Physiology and Disease, 2nd Edition)
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