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Orav E, Kokinovic B, Teppola H, Siimon M, Lauri SE, Hartung H. Arginine vasopressin activates serotonergic neurons in the dorsal raphe nucleus during neonatal development in vitro and in vivo. Neuropharmacology 2024; 258:110068. [PMID: 38996832 DOI: 10.1016/j.neuropharm.2024.110068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/08/2024] [Accepted: 07/08/2024] [Indexed: 07/14/2024]
Abstract
Birth stress is a risk factor for psychiatric disorders and associated with exaggerated release of the stress hormone arginine vasopressin (AVP) into circulation and in the brain. In perinatal hippocampus, AVP activates GABAergic interneurons which leads to suppression of spontaneous network events and suggests a protective function of AVP on cortical networks during birth. However, the role of AVP in developing subcortical networks is not known. Here we tested the effect of AVP on the dorsal raphe nucleus (DRN) 5-hydroxytryptamine (5-HT, serotonin) system in male and female neonatal rats, since early 5-HT homeostasis is critical for the development of cortical brain regions and emotional behaviors. We show that AVP is strongly excitatory in neonatal DRN: it increases excitatory synaptic inputs of 5-HT neurons via V1A receptors in vitro and promotes their action potential firing through a combination of its effect on glutamatergic synaptic transmission and a direct effect on the excitability of these neurons. Furthermore, we identified two major firing patterns of neonatal 5-HT neurons in vivo, tonic regular firing and low frequency oscillations of regular spike trains and confirmed that these neurons are also activated by AVP in vivo. Finally, we show that the sparse vasopressinergic innervation in neonatal DRN originates exclusively from cell groups in medial amygdala and bed nucleus of stria terminalis. Hyperactivation of the neonatal 5-HT system by AVP during birth stress may impact its own functional development and affect the maturation of cortical target regions, which may increase the risk for psychiatric conditions later on.
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Affiliation(s)
- Ester Orav
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.
| | - Bojana Kokinovic
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.
| | - Heidi Teppola
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.
| | - Mari Siimon
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.
| | - Sari E Lauri
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.
| | - Henrike Hartung
- HiLIFE Neuroscience Center, University of Helsinki, Helsinki, Finland.
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Feng Y, Huang Z, Ma X, Zong X, Xu P, Lin HW, Zhang Q. Intermittent theta-burst stimulation alleviates hypoxia-ischemia-caused myelin damage and neurologic disability. Exp Neurol 2024; 378:114821. [PMID: 38782349 PMCID: PMC11214828 DOI: 10.1016/j.expneurol.2024.114821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 05/01/2024] [Accepted: 05/19/2024] [Indexed: 05/25/2024]
Abstract
Neonatal hypoxia-ischemia (HI) results in behavioral deficits, characterized by neuronal injury and retarded myelin formation. To date, limited treatment methods are available to prevent or alleviate neurologic sequelae of HI. Intermittent theta-burst stimulation (iTBS), a non-invasive therapeutic procedure, is considered a promising therapeutic tool for treating some neurocognitive disorders and neuropsychiatric diseases. Hence, this study aims to investigate whether iTBS can prevent the negative behavioral manifestations of HI and explore the mechanisms for associations. We exposed postnatal day 10 Sprague-Dawley male and female rats to 2 h of hypoxia (6% O2) following right common carotid artery ligation, resulting in oligodendrocyte (OL) dysfunction, including reduced proliferation and differentiation of oligodendrocyte precursor cells (OPCs), decreased OL survival, and compromised myelin in the corpus callosum (CC) and hippocampal dentate gyrus (DG). These alterations were concomitant with cognitive dysfunction and depression-like behaviors. Crucially, early iTBS treatment (15 G, 190 s, seven days, initiated one day post-HI) significantly alleviated HI-caused myelin damage and mitigated the neurologic sequelae both in male and female rats. However, the late iTBS treatment (initiated 18 days after HI insult) could not significantly impact these behavioral deficits. In summary, our findings support that early iTBS treatment may be a promising strategy to improve HI-induced neurologic disability. The underlying mechanisms of iTBS treatment are associated with promoting the differentiation of OPCs and alleviating myelin damage.
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Affiliation(s)
- Yu Feng
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, 1501 Kings Highway, LA 71103, USA
| | - Zhihai Huang
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, 1501 Kings Highway, LA 71103, USA
| | - Xiaohui Ma
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, 1501 Kings Highway, LA 71103, USA
| | - Xuemei Zong
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, 1501 Kings Highway, LA 71103, USA
| | - Peisheng Xu
- Department of Drug Discovery and Biomedical Sciences, University of South Carolina, College of Pharmacy, 715 Sumter Street, CLS609D, Columbia, SC 29208, USA
| | - Hung Wen Lin
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, 1501 Kings Highway, LA 71103, USA
| | - Quanguang Zhang
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, 1501 Kings Highway, LA 71103, USA.
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Villa M, Martínez-Vega M, Silva L, Muneta-Arrate I, Gómez-Soria A, Muguruza C, Del Pozo A, de Hoz-Rivera M, Romero A, Callado LF, Casarejos MJ, Martínez-Orgado J. Effects of cannabidiol in post-stroke mood disorders in neonatal rats. Pediatr Res 2024; 95:1783-1790. [PMID: 38360979 DOI: 10.1038/s41390-024-03077-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 01/23/2024] [Accepted: 01/27/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Neonatal rats can manifest post-stroke mood disorders (PSMD) following middle cerebral artery occlusion (MCAO). We investigated whether cannabidiol (CBD) neuroprotection, previously demonstrated in neonatal rats after MCAO, includes prevention of PSMD development. METHODS Seven-day-old Wistar rats (P7) underwent MCAO and received either vehicle or 5 mg/kg CBD treatment. Brain damage was quantified by MRI, and neurobehavioral and histological (TUNEL) studies were performed at P14 and P37. PSMD were assessed using the tail suspension test, forced swimming test, and open field tests. The dopaminergic system was evaluated by quantifying dopaminergic neurons (TH+) in the Ventral Tegmental Area (VTA), measuring brain dopamine (DA) concentration and DA transporter expression, and assessing the expression and function D2 receptors (D2R) through [35S]GTPγS binding. Animals without MCAO served as controls. RESULTS CBD reduced MCAO-induced brain damage and improved motor performance. At P14, MCAO induced depressive-like behavior, characterized by reduced TH+ cell population and DA levels, which CBD did not prevent. However, CBD ameliorated hyperactivity observed at P37, preventing increased DA concentration by restoring D2R function. CONCLUSIONS These findings confirm the development of PSMD following MCAO in neonatal rats and highlight CBD as a neuroprotective agent capable of long-term functional normalization of the dopaminergic system post-MCAO. IMPACT MCAO in neonatal rats led to post-stroke mood disorders consisting in a depression-like picture in the medium term evolving towards long-term hyperactivity, associated with an alteration of the dopaminergic system. The administration of CBD after MCAO did not prevent the development of depressive-like behavior, but reduced long-term hyperactivity, normalizing dopamine receptor function. These data point to the importance of considering the development of depression-like symptoms after neonatal stroke, a well-known complication after stroke in adults. Our work confirms the interest of CBD as a possible treatment for neonatal stroke.
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Affiliation(s)
- María Villa
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain
| | - María Martínez-Vega
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain
| | - Laura Silva
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain
| | - Itziar Muneta-Arrate
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Bizkaia, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Bizkaia, Spain
| | - Ana Gómez-Soria
- Servicio de Neurobiología-Investigación, Hospital Ramón y Cajal, Madrid, Spain
| | - Carolina Muguruza
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Bizkaia, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Bizkaia, Spain
| | - Aarón Del Pozo
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain
| | - María de Hoz-Rivera
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain
| | - Angela Romero
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain
| | - Luis F Callado
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Bizkaia, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Bizkaia, Spain
- Biocruces-Bizkaia Health Research Institute, Barakaldo, Bizkaia, Spain
| | | | - José Martínez-Orgado
- Biomedical Research Foundation, Hospital Clínico San Calos-IdISSC, Madrid, Spain.
- Department of Neonatology, Hospital Clínico San Calos-IdISSC, Madrid, Spain.
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Kromm GH, Patankar H, Nagalotimath S, Wong H, Austin T. Socioemotional and Psychological Outcomes of Hypoxic-Ischemic Encephalopathy: A Systematic Review. Pediatrics 2024; 153:e2023063399. [PMID: 38440801 PMCID: PMC10979301 DOI: 10.1542/peds.2023-063399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/05/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Therapeutic hypothermia has reduced the risk of death or major disability following perinatal hypoxic-ischemic encephalopathy (HIE); however, many children who experience perinatal HIE still go on to develop personal and behavioral challenges, which can be difficult for caregivers and a public health burden for society. Our objective with this review is to systematically identify and synthesize studies that evaluate associations between perinatal HIE and socioemotional or psychological outcomes. METHODS We screened all search-returned journal articles from Cochrane Library, Embase, Medline, PsycINFO, Scopus, and Web of Science from data inception through February 1, 2023. Keywords related to HIE (eg, neonatal encephalopathy, neonatal brain injury) and outcomes (eg, social*, emotion*, behav* problem, psycholog*, psychiatr*) were searched with a predefined search string. We included all observational human studies reporting socioemotional or psychological sequelae of term HIE. Study data were recorded on standardized sheets, and the Newcastle-Ottawa Scale was adapted to assess study quality. RESULTS We included 43 studies documenting 3244 HIE participants and 2132 comparison participants. We found statistically significant associations between HIE and social and emotional, behavioral, and psychological and psychiatric deficits throughout infancy, childhood, and adolescence (19 studies). The authors of the included studies also report nonsignificant findings (11 studies) and outcomes without statistical comparison (25 studies). CONCLUSIONS Perinatal HIE may be a risk factor for a range of socioemotional and psychological challenges in the short- and long-term. Routine screening, early intervention, and follow-up support may be particularly beneficial to this population.
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Affiliation(s)
| | | | | | - Hilary Wong
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- NICU, Rosie Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Topun Austin
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- NICU, Rosie Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
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Hortigüela MM, Martínez-Biarge M, Conejo D, Vega-Del-Val C, Arnaez J. Motor, cognitive and behavioural outcomes after neonatal hypoxic-ischaemic encephalopathy. An Pediatr (Barc) 2024; 100:104-114. [PMID: 38331678 DOI: 10.1016/j.anpede.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 12/11/2023] [Indexed: 02/10/2024] Open
Abstract
INTRODUCTION The current neurodevelopmental status of patients with neonatal hypoxic-ischaemic encephalopathy (HIE) in Spain is unknown. Recent European studies highlight a shift of severe pathology towards mild motor disorders and emotional problems. The aim of this study was to analyse neurodevelopmental outcomes in a cohort of neonates with HIE at age 3 years. PATIENTS AND METHOD Multicentre observational study of neonates born at 35 or more weeks of gestation with moderate to severe HIE in 2011-2013 in 12 hospitals in a large Spanish region (91 217 m2), with the recruitment extended through 2017 in the coordinating hospital. We analysed the findings of neonatal neuroimaging and neurodevelopmental test scores at 3 years (Bayley-III, Peabody Picture Vocabulary Test and Child Behavior Checklist). The sample included 79 controls with no history of perinatal asphyxia. RESULTS Sixty-three patients were recruited, of whom 5 (7.9%) were excluded due to other pathology and 14 (24%) died. Of the 44 survivors, 42 (95.5%) were evaluated. Of these 42, 10 (24%) had adverse outcomes (visual or hearing impairment, epilepsy, cerebral palsy or developmental delay). Other detected problems were minor neurological signs in 6 of the 42 (14%) and a higher incidence of emotional problems compared to controls: introversion (10.5% vs. 1.3%), anxiety (34.2% vs. 11.7%) and depression (28.9% vs. 7.8%) (P < .05). The severity of the lesions on neuroimaging was significantly higher in patients with motor impairment (P = .004) or who died or had an adverse outcome (P = .027). CONCLUSION In addition to classical sequelae, the followup of patients with neonatal HIE should include the diagnosis and treatment of minor motor disorders and social and emotional problems.
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Affiliation(s)
| | | | - David Conejo
- Servicio de Pediatría, Hospital Universitario de Burgos, Burgos, Spain
| | | | - Juan Arnaez
- Unidad de Neonatología, Hospital Universitario de Burgos, Burgos, Spain; Neurología Neonatal, Fundación NeNe, Madrid, Spain; SIBEN, Nueva Yersey, USA.
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Chanana V, Hackett M, Deveci N, Aycan N, Ozaydin B, Cagatay NS, Hanalioglu D, Kintner DB, Corcoran K, Yapici S, Camci F, Eickhoff J, Frick KM, Ferrazzano P, Levine JE, Cengiz P. TrkB-mediated sustained neuroprotection is sex-specific and Erα-dependent in adult mice following neonatal hypoxia ischemia. Biol Sex Differ 2024; 15:1. [PMID: 38178264 PMCID: PMC10765746 DOI: 10.1186/s13293-023-00573-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/07/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Neonatal hypoxia ischemia (HI) related brain injury is one of the major causes of life-long neurological morbidities that result in learning and memory impairments. Evidence suggests that male neonates are more susceptible to the detrimental effects of HI, yet the mechanisms mediating these sex-specific responses to neural injury in neonates remain poorly understood. We previously tested the effects of treatment with a small molecule agonist of the tyrosine kinase B receptor (TrkB), 7,8-dihydroxyflavone (DHF) following neonatal HI and determined that females, but not males exhibit increased phosphorylation of TrkB and reduced apoptosis in their hippocampi. Moreover, these female-specific effects of the TrkB agonist were found to be dependent upon the expression of Erα. These findings demonstrated that TrkB activation in the presence of Erα comprises one pathway by which neuroprotection may be conferred in a female-specific manner. The goal of this study was to determine the role of Erα-dependent TrkB-mediated neuroprotection in memory and anxiety in young adult mice exposed to HI during the neonatal period. METHODS In this study, we used a unilateral hypoxic ischemic (HI) mouse model. Erα+/+ or Erα-/- mice were subjected to HI on postnatal day (P) 9 and mice were treated with either vehicle control or the TrkB agonist, DHF, for 7 days following HI. When mice reached young adulthood, we used the novel object recognition, novel object location and open field tests to assess long-term memory and anxiety-like behavior. The brains were then assessed for tissue damage using immunohistochemistry. RESULTS Neonatal DHF treatment prevented HI-induced decrements in recognition and location memory in adulthood in females, but not in males. This protective effect was absent in female mice lacking Erα. The female-specific improved recognition and location memory outcomes in adulthood conferred by DHF therapy after neonatal HI tended to be or were Erα-dependent, respectively. Interestingly, DHF triggered anxiety-like behavior in both sexes only in the mice that lacked Erα. When we assessed the severity of injury, we found that DHF therapy did not decrease the percent tissue loss in proportion to functional recovery. We additionally observed that the presence of Erα significantly reduced overall HI-associated mortality in both sexes. CONCLUSIONS These observations provide evidence for a therapeutic role for DHF in which TrkB-mediated sustained recovery of recognition and location memories in females are Erα-associated and dependent, respectively. However, the beneficial effects of DHF therapy did not include reduction of gross tissue loss but may be derived from the enhanced functioning of residual tissues in a cell-specific manner.
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Affiliation(s)
- Vishal Chanana
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Margaret Hackett
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Nazli Deveci
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Nur Aycan
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
| | - Burak Ozaydin
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Nur Sena Cagatay
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Damla Hanalioglu
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
| | - Douglas B Kintner
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Karson Corcoran
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Sefer Yapici
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Furkan Camci
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
| | - Jens Eickhoff
- Department of Biostatistics & Medical Informatics, University of Wisconsin-Madison, Madison, WI, USA
| | - Karyn M Frick
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Peter Ferrazzano
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Jon E Levine
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI, USA
| | - Pelin Cengiz
- Department of Pediatrics, University of Wisconsin-Madison, 1500 Highland Ave-T503, Madison, WI, 53705-9345, USA.
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA.
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Chanana V, Hackett M, Deveci N, Aycan N, Ozaydin B, Cagatay NS, Hanalioglu D, Kintner DB, Corcoran K, Yapici S, Camci F, Eickhoff J, Frick KM, Ferrazano P, Levine JE, Cengiz P. TrkB-mediated sustained neuroprotection is sex-specific and ERα dependent in adult mice following neonatal hypoxia ischemia. RESEARCH SQUARE 2023:rs.3.rs-3325405. [PMID: 37720039 PMCID: PMC10503864 DOI: 10.21203/rs.3.rs-3325405/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Background Neonatal hypoxia ischemia (HI) related brain injury is one of the major causes of life-long neurological morbidities that result in learning and memory impairments. Evidence suggests that male neonates are more susceptible to the detrimental effects of HI, yet the mechanisms mediating these sex-specific responses to neural injury in neonates remain poorly understood. We previously tested the effects of treatment with a small molecule agonist of the tyrosine kinase B receptor (TrkB), 7,8-dihydroxyflavone (DHF) following neonatal HI and determined that females, but not males exhibit increased phosphorylation of TrkB and reduced apoptosis in their hippocampi. Moreover, these female-specific effects of the TrkB agonist were found to be dependent upon the expression of ERα. These findings demonstrated that TrkB activation in the presence of ERα comprises one pathway by which neuroprotection may be conferred in a female-specific manner. The goal of this study was to determine the role of ERα-dependent TrkB-mediated neuroprotection in memory and anxiety in young adult mice exposed to HI during the neonatal period. Methods In this study we used a unilateral hypoxic ischemic (HI) mouse model. ERα+/+ or ERα-/- mice were subjected to HI on postnatal day (P) 9 and mice were treated with either vehicle control or the TrkB agonist, DHF, for seven days following HI. When mice reached young adulthood, we used the novel object recognition, novel object location and open field tests to assess long-term memory and anxiety like behavior. The brains were then assessed for tissue damage using immunohistochemistry. Results Neonatal DHF treatment prevented HI-induced decrements in recognition and location memory in adulthood in females, but not in males. This protective effect was absent in female mice lacking ERα. Thus, the female-specific and ERα-dependent neuroprotection conferred by DHF therapy after neonatal HI was associated with improved learning and memory outcomes in adulthood. Interestingly, DHF triggered anxiety like behavior in both sexes only in the mice that lacked ERα. When we assessed the severity of injury, we found that DHF therapy did not decrease the percent tissue loss in proportion to functional recovery. We additionally observed that the presence of ERα significantly reduced overall HI-associated mortality in both sexes. Conclusions These observations provide evidence for a therapeutic role for DHF in which sustained recovery of memory in females is TrkB-mediated and ERα-dependent. However, the beneficial effects of DHF therapy did not include reduction of gross tissue loss but may be derived from the enhanced functioning of residual tissues in a cell-specific manner.
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Affiliation(s)
- Vishal Chanana
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Margaret Hackett
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Nazli Deveci
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Nur Aycan
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
| | - Burak Ozaydin
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Nur Sena Cagatay
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Damla Hanalioglu
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
| | - Douglas B. Kintner
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Karson Corcoran
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Sefer Yapici
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Furkan Camci
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
| | - Jens Eickhoff
- Department of Biostatistics & Medical Informatics, University of Wisconsin-Madison, Madison, WI, US
| | - Karyn M. Frick
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Peter Ferrazano
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Jon E. Levine
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI, USA
| | - Pelin Cengiz
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
- Waisman Center, University of Wisconsin-Madison, Madison, WI, USA
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Marques KL, Moreira ML, Thiele MC, Cunha-Rodrigues MC, Barradas PC. Depressive-like behavior and impaired synaptic plasticity in the prefrontal cortex as later consequences of prenatal hypoxic-ischemic insult in rats. Behav Brain Res 2023; 452:114571. [PMID: 37421988 DOI: 10.1016/j.bbr.2023.114571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/10/2023]
Abstract
Perinatal hypoxia-ischemia (HI) is a leading cause of morbidity and mortality among newborns. Infants with HI encephalopathy may experience lasting consequences, such as depression, in adulthood. In this study, we examined depressive-like behavior, neuronal population, and markers of monoaminergic and synaptic plasticity in the prefrontal cortex (PFC) of adolescent rats subjected to a prenatal HI model. Pregnant rats underwent a surgery in which uterine and ovarian blood flow was blocked for 45 min at E18 (HI procedure). Sham-operated subjects were also generated (SH procedure). Behavioral tests were conducted on male and female pups from P41 to P43, and animals were histologically processed or dissected for western blotting at P45. We found that the HI groups consumed less sucrose in the sucrose preference test and remained immobile for longer periods in the forced swim test. Additionally, we observed a significant reduction in neuronal density and PSD95 levels in the HI group, as well as a smaller number of synaptophysin-positive cells. Our results underscore the importance of this model in investigating the effects of HI-induced injuries, as it reproduces an increase in depressive-like behavior and suggests that the HI insult affects circuits involved in mood modulation.
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Affiliation(s)
- Kethely L Marques
- Departamento de Farmacologia e Psicobiologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Milena L Moreira
- Departamento de Farmacologia e Psicobiologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Maria C Thiele
- Departamento de Farmacologia e Psicobiologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marta C Cunha-Rodrigues
- Departamento de Farmacologia e Psicobiologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Penha C Barradas
- Departamento de Farmacologia e Psicobiologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Pedroza-García KA, Calderón-Vallejo D, Cervantes-García D, Quintanar-Stephano A, Salinas E, Quintanar JL. Effect of Leuprolide Acetate, a GnRH Agonist, on Neuroinflammation and Anxiety-Like Behavior after Mild Hypoxic-Ischemic Encephalopathy in Rat Model. Neuroimmunomodulation 2023; 30:206-212. [PMID: 37607495 PMCID: PMC10614564 DOI: 10.1159/000533388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/31/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND Mild hypoxic-ischemic encephalopathy (HIE) is a condition that predisposes to negative outcomes such as neuroanatomical injury, mood disorders, and motor or cognitive disabilities. The neuroinflammation plays an important role in the neurological damage; therefore, reducing it could provide neuroprotection. The leuprolide acetate (LA) has shown to have neuroregenerative and immunomodulator properties in other nervous system injuries. OBJECTIVE The aim of this study was to evaluate the immunomodulatory effect of LA in the acute phase of mild HIE and its effects in motor activity and behavior in a subacute phase. METHOD Forty-five Wistar rats on postnatal day 7 were divided into Sham, HIE treated with saline solution (HIE-SS), and HIE-LA. The HIE was performed cutting of the right carotid artery followed by 60 min of hypoxia. The expression of the inflammatory cytokines interleukin (IL)-1β, tumor necrosis factor (TNF)-α, interferon (IFN)-γ, and the chemokine CXCL-1 were evaluated 72 h after HIE by RT-qPCR and the motor activity and behavior were evaluated by open field test at postnatal day 33. RESULTS HIE-SS animals showed increased expression of IL-1β, TNF-α, IFN-γ, and CXCL-1 genes in injured tissue. However, the HIE-LA group exhibited similar expression levels of IL-1β and TNF-α to the Sham group, while IFN-γ and CXCL-1 mRNA expression were attenuated with LA treatment. LA treatment also prevented anxiety-like behavior in the open field test. CONCLUSION Treatment with LA partially reverses HIE-induced neuroinflammation and prevents anxiety-like behavior in neonatal rats.
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Affiliation(s)
- Karina Alejandra Pedroza-García
- Laboratorio de Neurofisiología, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Denisse Calderón-Vallejo
- Laboratorio de Neurofisiología, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
- Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Daniel Cervantes-García
- Laboratorio de Inmunología, Departamento de Microbiología, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
- Consejo Nacional de Ciencia y Tecnología, Mexico City, Mexico
| | - Andrés Quintanar-Stephano
- Laboratorio de Neuroendocrinología, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Eva Salinas
- Laboratorio de Inmunología, Departamento de Microbiología, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - J. Luis Quintanar
- Laboratorio de Neurofisiología, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
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The Role of the Dopamine System in Post-Stroke Mood Disorders in Newborn Rats. Int J Mol Sci 2023; 24:ijms24043229. [PMID: 36834637 PMCID: PMC9958627 DOI: 10.3390/ijms24043229] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023] Open
Abstract
Post-stroke mood disorders (PSMD) affect disease prognosis in adults. Adult rodent models underlie the importance of the dopamine (DA) system in PSMD pathophysiology. There are no studies on PSMD after neonatal stroke. We induced neonatal stroke in 7-day-old (P7) rats by temporal left middle cerebral artery occlusion (MCAO). Performance in the tail suspension test (TST) at P14 and the forced swimming test (FST) and open field test (OFT) at P37 were studied to assess PSMD. DA neuron density in the ventral tegmental area, brain DA concentration and DA transporter (DAT) expression as well as D2 receptor (D2R) expression and G-protein functional coupling were also studied. MCAO animals revealed depressive-like symptoms at P14 associated with decreased DA concentration and reduced DA neuron population and DAT expression. At P37, MCAO rats showed hyperactive behavior associated with increased DA concentration, normalization of DA neuron density and decreased DAT expression. MCAO did not modify D2R expression but reduced D2R functionality at P37. MCAO-induced depressive-like symptoms were reversed by the DA reuptake inhibitor GBR-12909. In conclusion, MCAO in newborn rats induced depressive-like symptoms and hyperactive behavior in the medium and long term, respectively, that were associated with alterations in the DA system.
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Zou Q, Lai Y, Lun ZR. Exploring the Association between Oxygen Concentration and Life Expectancy in China: A Quantitative Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1125. [PMID: 36673882 PMCID: PMC9859324 DOI: 10.3390/ijerph20021125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 12/29/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
The aim of this study was to investigate and quantify the association between oxygen concentration and life expectancy. The data from 34 provinces and 39 municipalities were included in all analyses. Bayesian regression modeling with spatial-specific random effects was used to quantify the impact of oxygen concentration (measured as partial pressure of oxygen) on life expectancy, adjusting for other potential confounding factors. We used hierarchical cluster analysis to group the provinces according to disease burden and analyzed the oxygen levels and the characteristics of causes of death between the clusters. The Bayesian regression analysis showed that the life expectancy at the provincial level increased by 0.15 (95% CI: 0.10-0.19) years, while at the municipal level, it increased by 0.17 (95% CI: 0.12-0.22) years, with each additional unit (mmHg) of oxygen concentration, after controlling for potential confounding factors. Three clusters were identified in the hierarchical cluster analysis, which were characterized by different oxygen concentrations, and the years of life lost from causes potentially related to hypoxia were statistically significantly different between the clusters. A positive correlation was found between oxygen concentration and life expectancy in China. The differences in causes of death and oxygen levels in the provincial clusters suggested that oxygen concentration may be an important factor in life expectancy when mediated by diseases that are potentially related to hypoxia.
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Affiliation(s)
- Qing Zou
- Department of Medical Statistics, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Yingsi Lai
- Department of Medical Statistics, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
- Sun Yat-Sen Global Health Institute, Sun Yat-Sen University, Guangzhou 510080, China
| | - Zhao-Rong Lun
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
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