Livia Ruehr , Kim Hoffmann , Emily May , Marie Luise Münch , Haiko Schlögl , Julia Sacher
{"title":"“Estrogens and human brain networks: A systematic review of structural and functional neuroimaging studies”","authors":"Livia Ruehr , Kim Hoffmann , Emily May , Marie Luise Münch , Haiko Schlögl , Julia Sacher","doi":"10.1016/j.yfrne.2024.101174","DOIUrl":"10.1016/j.yfrne.2024.101174","url":null,"abstract":"<div><div>Estrogen fluctuations during the menstrual cycle, puberty, postpartum, or in the menopausal transition are associated with cognitive, affective, and behavioral effects. Additionally, estrogens are essential in hormonal contraception, menopausal hormone therapy, or gender-affirming hormone therapy. This systematic review summarizes findings on the role of estrogens for structure, function, and connectivity of human brain networks. We searched PubMed, Web of Science, and ScienceDirect for neuroimaging articles assessing estrogens published since 2008. We included 54 studies (N = 2,494 participants) on endogenous estrogen, and 28 studies (N = 1,740 participants) on exogenous estrogen conditions. Estrogen-related changes were reported for emotion, reward, memory, and resting-state networks, and in regional white and gray matter, with a particular neural plasticity in the hippocampus and amygdala. By examining study designs, imaging measures, and analysis methods, this review highlights the role of neuroimaging in advancing neuroendocrine and neurocognitive research, particularly promoting brain health for women and individuals with ovaries.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"77 ","pages":"Article 101174"},"PeriodicalIF":6.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142902359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nicolette Stogios , Sally Wu , Margaret Hahn , Zahra Emami , Janani Navagnanavel , Vittal Korann , Akash PrasannaKumar , Gary Remington , Ariel Graff-Guerrero , Sri Mahavir Agarwal
{"title":"Exploring the effects of an insulin challenge on neuroimaging outcomes: A scoping review","authors":"Nicolette Stogios , Sally Wu , Margaret Hahn , Zahra Emami , Janani Navagnanavel , Vittal Korann , Akash PrasannaKumar , Gary Remington , Ariel Graff-Guerrero , Sri Mahavir Agarwal","doi":"10.1016/j.yfrne.2025.101187","DOIUrl":"10.1016/j.yfrne.2025.101187","url":null,"abstract":"<div><div>Emerging evidence demonstrates that insulin has a modulating effect on metabolic and cognitive function in the brain, highlighting the potential role of aberrant brain insulin signaling in the pathogenesis of various neuropsychiatric illnesses. Neuroimaging paradigms using intranasal insulin (INI) as a pharmacological challenge have allowed us to study the effects of insulin in the human brain. In this scoping review, we conducted a systematic database search to identify relevant research studies that employed an INI-based neuroimaging assay of brain insulin signaling. Thirty-six studies met inclusion criteria for this review. INI was found to significantly modulate activity and cerebral blood flow in brain regions related to homeostatic/hedonic control of food intake, as well as cognition. This review highlights the putative role of insulin signaling in the brain and the potential therapeutic value of INI in patients with mental health, addiction, and co-morbid metabolic disorders.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"77 ","pages":"Article 101187"},"PeriodicalIF":6.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juan Pablo Del Río , Alexandros Tsompanidis , Pablo A. Gaspar , Alejandro Maturana-Hurtado , Gonzalo M. Rojas-Costa , Alexies Dagnino-Subiabre , Arabia Olea , Manuel Maliqueo , Bárbara Echiburú , Amanda Ladrón de Guevara , Juan F. Montiel , Simon Baron-Cohen , Nicolás Crisosto
{"title":"Women with polycystic ovary syndrome (PCOS): Likelihood of cooccurring neuropsychiatric conditions and the dual hit hypothesis","authors":"Juan Pablo Del Río , Alexandros Tsompanidis , Pablo A. Gaspar , Alejandro Maturana-Hurtado , Gonzalo M. Rojas-Costa , Alexies Dagnino-Subiabre , Arabia Olea , Manuel Maliqueo , Bárbara Echiburú , Amanda Ladrón de Guevara , Juan F. Montiel , Simon Baron-Cohen , Nicolás Crisosto","doi":"10.1016/j.yfrne.2025.101188","DOIUrl":"10.1016/j.yfrne.2025.101188","url":null,"abstract":"<div><div>Polycystic Ovary Syndrome (PCOS) is the most common endocrine-metabolic disorder in women of reproductive age. Hyperandrogenism has been proposed as its main pathophysiological feature. PCOS is associated with co-occurring conditions, including psychiatric disorders such as anxiety, depression, and neurodevelopmental conditions such as autism. Exposure to hyperandrogenism during prenatal life and adolescence may explain this association. PCOS women exhibit hyperandrogenism during pregnancy, and up to 70% of their daughters will present a similar phenotype from puberty onwards. The ’dual hit hypothesis’ proposes that stressors during prenatal life and adolescence can synergistically lead to co-occurring conditions in adulthood. PCOS has been recently proposed as an independent likelihood factor for the development of neuropsychiatric conditions. However, the specific mechanisms require further research to develop effective interventions. This review discusses how hyperandrogenism can affect neurodevelopment during two key periods of brain development, which may explain the long-term impact of PCOS on mental health.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"77 ","pages":"Article 101188"},"PeriodicalIF":6.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143691604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sex/gender differences in the clinical trajectory of Alzheimer’s disease: Insights into diagnosis and cognitive reserve","authors":"Sheina Emrani , Erin E. Sundermann","doi":"10.1016/j.yfrne.2025.101184","DOIUrl":"10.1016/j.yfrne.2025.101184","url":null,"abstract":"<div><div>The two-times higher prevalence of Alzheimer’s disease (AD) in females versus males is well-known; however, there are also sex/gender differences in clinical presentation and diagnostic accuracy that are less examined but equally important to understand in terms of improving early detection, intervention and disease tracking in each sex/gender. This review explores how these disparities in clinical presentation manifest across the AD continuum, with a focus on the earlier stages of preclinical AD and mild cognitive impairment (MCI). We summarize evidence indicating that female’s verbal memory advantage may mask early cognitive decline, leading to delayed MCI diagnosis and limiting opportunities for early intervention. Conversely, females demonstrate steeper cognitive decline at later disease stages compared to males. These patterns align with the cognitive reserve theory, suggesting female’s verbal memory strength may act as a domain-specific resilience factor. Lastly, this review emphasizes the need for sex-sensitive diagnostic tools to improve early detection accuracy and equity in clinical practice.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"77 ","pages":"Article 101184"},"PeriodicalIF":6.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Catherine M.E. Barrett , Zohreh Zeidy , Alison Farrell , Lindsay S. Cahill , Katie P. Wadden
{"title":"Maternal brain plasticity, physiology and exercise science: A scoping narrative review","authors":"Catherine M.E. Barrett , Zohreh Zeidy , Alison Farrell , Lindsay S. Cahill , Katie P. Wadden","doi":"10.1016/j.yfrne.2025.101185","DOIUrl":"10.1016/j.yfrne.2025.101185","url":null,"abstract":"<div><h3>Introduction</h3><div>The perinatal period is characterized by extreme shifts in hormones, neurochemistry, and life experiences that drive significant changes in the brain, known as maternal plasticity. Due to rising maternal health conditions, such as postpartum depression, there is a critical need to investigate factors, such as engagement in physical activity and exercise, that may mitigate susceptibility to maladaptive maternal plasticity. This scoping review aims to analyze exercise interventions and maternal brain outcomes during reproduction.</div></div><div><h3>Methods</h3><div>A systematic search was completed in Medline, Embase, CINAHL, PsycINFO, SportDiscuss. The key concepts of the search were (i) brain plasticity, (ii) maternal reproductive period including pre-conception, pregnancy, and postpartum, and (iii) exercise interventions. Due to the limited amount of evidence available on this topic, the review findings were discussed using a combined scoping and narrative review approach.</div></div><div><h3>Results</h3><div>The search produced 2,167 unique articles after removing 2588 duplicates. Covidence software was used for the screening procedure. Following title and abstract screening, 2160 articles were deemed irrelevant and removed. Seven articles moved forward to full-text screening. One article was excluded during full-text screening for wrong outcomes, leaving six papers for extraction. Extraction revealed that four out of six studies were conducted in the rodent alone, one was conducted in humans alone and one was conducted in both a human and a rodent model.</div></div><div><h3>Discussion</h3><div>The methodological inconsistencies in the limited number of studies within this field highlight the need for standardization, which motivated the development of the Consensus on Exercise Reporting Template for animal research. Moreover, the present review highlights future directions and knowledge gaps, emphasizing the critical need for high-quality research to address the many unanswered questions regarding the impact of exercise on the maternal brain.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"77 ","pages":"Article 101185"},"PeriodicalIF":6.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lydia Kogler , Rui Wang , Teresa Luther , Alex Hofer , Beatrice Frajo-Apor , Birgit Derntl
{"title":"Cortisol in schizophrenia spectrum disorders: A comprehensive meta-analysis","authors":"Lydia Kogler , Rui Wang , Teresa Luther , Alex Hofer , Beatrice Frajo-Apor , Birgit Derntl","doi":"10.1016/j.yfrne.2025.101186","DOIUrl":"10.1016/j.yfrne.2025.101186","url":null,"abstract":"<div><div>Schizophrenia spectrum disorders (SSD) are characterized by alterations in cortisol levels across various parameters, including stress reactivity, hair cortisol, and baseline levels, which may be influenced by antipsychotic treatment. To provide a comprehensive overview of cortisol dysregulation in SSD, we conducted meta-analyses assessing (1) the effects of antipsychotic treatment in SSD patients, and additionally comparing cortisol in SSD patients versus healthy controls (HC) (2) following stress induction (metabolic, physiological, psychological stressors), (3) in hair and (4) baseline levels. Systematic literature searches in PubMed, Web of Science, and PsycINFO (November 2024) identified 121 studies (9049 SSD patients) for inclusion. Meta-analytic results revealed that antipsychotic treatment significantly reduced cortisol levels in SSD (<em>k</em> = 16, g = -0.480, 95 % CI [-0.818, −0.142], <em>p</em> = 0.005). Additionally, compared to HC, SSD was associated with reduced cortisol suppression following dexamethasone exposure (<em>k</em> = 9, <em>g</em> = 0.299, 95 % CI [0.091, 0.507], <em>p</em> = 0.005) and with elevated baseline cortisol levels in the morning (<em>k</em> = 71, <em>g</em> = 0.38, 95 % CI [0.210, 0.546], <em>p</em> < 0.001) and evening (<em>k</em> = 11, g = 0.368, 95 % CI [0.076, 0.661], <em>p</em> = 0.014). However, there were no significant group differences in afternoon baseline cortisol, hair cortisol or cortisol reactivity to stress (p > 0.05). These findings offer a detailed understanding of cortisol alterations in SSD and improve our understanding of HPA axis dysregulation in SSD.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"77 ","pages":"Article 101186"},"PeriodicalIF":6.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Progestagens and progesterone receptor modulation: Effects on the brain, mood, stress, and cognition in females","authors":"Celine Bencker , Laura Gschwandtner , Sibel Nayman , Ramunė Grikšienė , Billie Nguyen , Urs M. Nater , Rachida Guennoun , Inger Sundström-Poromaa , Belinda Pletzer , Marie Bixo , Erika Comasco","doi":"10.1016/j.yfrne.2024.101160","DOIUrl":"10.1016/j.yfrne.2024.101160","url":null,"abstract":"<div><div>Progesterone is a highly lipophilic gonadal hormone that can influence behavior and mental health through its receptors in the brain. Fluctuations in progesterone levels across critical periods of a females life are associated with increased susceptibility to mental conditions.</div><div>This review highlights the effects of progestagens, including progesterone and synthetic progestins, on the brain, mood, stress, and cognition in females. The primary focus is on experimental pharmacological research that teases out the distinct effects of progestagens from those of estrogens. Additionally, the key literature on puberty, the menstrual cycle, pregnancy, perimenopause, hormonal contraceptives, and menopausal hormone therapy is reviewed, although conclusions are limited by the nested effects of progestagens and estrogens.</div><div>Single study-findings suggest an influence of progesterone on amygdala reactivity related to processing of emotional stimuli and memory. In patients with premenstrual dysphoric disorder, progesterone receptor modulation improves premenstrual mood symptoms and potentially enhances fronto-cingulate control over emotion processing. The interaction between progestagens and the systems involved in the regulation of stress seems to influence subjective experiences of mood and stress. Sparse studies investigating the effects of progestin-only contraceptives suggest effects of progestagens on the brain, mood, and stress. Progesterone and progestins used for contraception can influence neural processes as myelination and neuroprotection, exerting protective effects against stroke. Concerning menopausal hormonal therapy, the effects of progestins are largely unknown.</div><div>Levels of progesterone as well as type, administration route, timing, dose regimen, metabolism, and intracellular activity of progestins in hormonal contraceptives and menopausal hormonal therapy are factors whose effects remain to be elucidated. Altogether, current knowledge highlights the potential role of progestagens in females health but also calls for well-designed pharmaco-behavioral studies disentangling the effects of progestagens from those of estrogens.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"76 ","pages":"Article 101160"},"PeriodicalIF":6.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142617956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elisabeth Traiffort, Abdelmoumen Kassoussi, Amina Zahaf
{"title":"Revisiting the role of sexual hormones in the demyelinated central nervous system","authors":"Elisabeth Traiffort, Abdelmoumen Kassoussi, Amina Zahaf","doi":"10.1016/j.yfrne.2024.101172","DOIUrl":"10.1016/j.yfrne.2024.101172","url":null,"abstract":"<div><div>Sex-related differences characterize multiple sclerosis, an autoimmune, inflammatory and neurodegenerative disease displaying higher incidence in females as well as discrepancies in susceptibility and progression. Besides clinical specificities, molecular and cellular differences related to sex hormones were progressively uncovered improving our understanding of the mechanisms involved in this disabling disease. The most recent findings may give rise to the identification of novel therapeutic perspectives that could meet the urgent need for a treatment preventing the transition from the recurrent- to the progressive form of the disease. The present review is an update of our current knowledge about progestagens, androgens and estrogens in the context of CNS demyelination including their synthesis, the impact of their dysregulation, the preclinical and clinical data presently available, the main molecular dimorphisms related to these hormones and their age-related changes and relationship with failure of spontaneous remyelination, likely impacting the inexorable progression of multiple sclerosis towards irreversible disabilities.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"76 ","pages":"Article 101172"},"PeriodicalIF":6.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142853759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jonathan J. Hirst , Hannah K. Palliser , Carlton Pavy , Julia C Shaw , Roisin A. Moloney
{"title":"Neurosteroid replacement approaches for improving outcomes after compromised pregnancies and preterm birth","authors":"Jonathan J. Hirst , Hannah K. Palliser , Carlton Pavy , Julia C Shaw , Roisin A. Moloney","doi":"10.1016/j.yfrne.2024.101169","DOIUrl":"10.1016/j.yfrne.2024.101169","url":null,"abstract":"<div><div>The levels of the key neurosteroid of pregnancy, allopregnanolone, are very high in the fetal and maternal brain compared to after birth. These levels are maintained by the placenta which forms a placental connection to fetal brain development. Maternal stresses depress placental synthesis resulting in a fall in allopregnanolone levels leading to deficits in myelination that continue into childhood. This contributes to an increased incidence of behavioural disorders. Supplementing neurosteroid action with allopregnanolone analogues or raising endogenous production with mitochondrial translocator protein (TSPO) ligands reverses these deficits. Preterm birth leads to an early dramatic loss of neurosteroid support for brain development leading to marked deficits in myelination and susceptibility to hypoxic-ischaemic injury. Postnatal treatment with the allopregnanolone analogue ganaxolone improves myelination and reduces hyperactive behaviour. TSPO ligands such as emapunil have been shown to improve oligodendrocyte maturation. These findings support the use of allopregnanolone supplementation approaches after pregnancy compromises to improve outcome.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"76 ","pages":"Article 101169"},"PeriodicalIF":6.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amy Mann , Jennifer Kalitsi , Khushali Jani , Daniel Martins , Ritika R Kapoor , Yannis Paloyelis
{"title":"The oxytocin system in patients with craniopharyngioma: A systematic review","authors":"Amy Mann , Jennifer Kalitsi , Khushali Jani , Daniel Martins , Ritika R Kapoor , Yannis Paloyelis","doi":"10.1016/j.yfrne.2024.101170","DOIUrl":"10.1016/j.yfrne.2024.101170","url":null,"abstract":"<div><div>Craniopharyngioma is a benign tumour affecting the hypothalamic and pituitary regions, which are involved in the production and secretion of oxytocin. We conducted a systematic review to assess dysregulation of the oxytocin system in craniopharyngioma and associations with neurobehavioural, eating, and metabolic abnormalities. Eight studies (n = 72 patients) were included. Evidence for dysfunction of the endogenous oxytocin system in craniopharyngioma is limited and mixed. While no significant differences in baseline salivary oxytocin concentrations were reported between patients with craniopharyngioma and controls, patients with craniopharyngioma were found to have blunted salivary oxytocin response following exercise stimulation and this was associated with greater state anxiety and higher BMI. Studies administering exogenous oxytocin are sparse and do not meet required standards. Hypothalamic damage may pose an additional mechanism of oxytocin dysregulation. Improving understanding of the oxytocin system in craniopharyngioma could be pivotal for exploring the potential therapeutic role of exogenous oxytocin in this condition.</div></div>","PeriodicalId":12469,"journal":{"name":"Frontiers in Neuroendocrinology","volume":"76 ","pages":"Article 101170"},"PeriodicalIF":6.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}