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Kim J, Lee HJ, Lee DA, Park KM. Choroid plexus enlargement in patients with obstructive sleep apnea. Sleep Med 2024; 121:179-183. [PMID: 38996618 DOI: 10.1016/j.sleep.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/01/2024] [Accepted: 07/07/2024] [Indexed: 07/14/2024]
Abstract
OBJECTIVES The function of choroid plexus is to produce cerebrospinal fluid, which is critical for the glymphatic system function. In this study, we aimed to analyze the differences in choroid plexus volume between patients with obstructive sleep apnea (OSA) and healthy controls, with the goal of discovering the glymphatic system dysfunction in patients with OSA. METHODS We prospectively enrolled 40 patients with OSA confirmed by polysomnography and 38 age- and sex-matched healthy controls. All participants underwent three-dimensional T1-weighted brain imaging, which was suitable for volumetric analysis. We compared choroid plexus volumes between patients with OSA and healthy controls, and analyzed the association between choroid plexus volume and polysomnographic findings in patients with OSA. RESULTS Choroid plexus volumes were significantly larger in patients with OSA than in healthy controls (2.311 % vs. 2.096 %, p = 0.005). However, no significant association was detected between choroid plexus volume and polysomnographic findings. CONCLUSION This study demonstrated enlargement of the choroid plexus in patients with OSA compared with healthy controls. This finding could be related with glymphatic system dysfunction in patients with OSA.
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Affiliation(s)
- Jinseung Kim
- Department of Family Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Ho-Joon Lee
- Department of Radiology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Dong Ah Lee
- Department of Neurology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Kang Min Park
- Department of Neurology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea.
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2
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Furtado A, Duarte AC, Costa AR, Gonçalves I, Santos CRA, Gallardo E, Quintela T. Circadian ABCG2 Expression Influences the Brain Uptake of Donepezil across the Blood-Cerebrospinal Fluid Barrier. Int J Mol Sci 2024; 25:5014. [PMID: 38732233 PMCID: PMC11084460 DOI: 10.3390/ijms25095014] [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: 03/21/2024] [Revised: 04/21/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
Donepezil (DNPZ) is a cholinesterase inhibitor used for the management of Alzheimer's disease (AD) and is dependent on membrane transporters such as ABCG2 to actively cross brain barriers and reach its target site of action in the brain. Located in the brain ventricles, the choroid plexus (CP) forms an interface between the cerebrospinal fluid (CSF) and the bloodstream, known as the blood-CSF barrier (BCSFB). Historically, the BCSFB has received little attention as a potential pathway for drug delivery to the central nervous system (CNS). Nonetheless, this barrier is presently viewed as a dynamic transport interface that limits the traffic of molecules into and out of the CNS through the presence of membrane transporters, with parallel activity with the BBB. The localization and expression of drug transporters in brain barriers represent a huge obstacle for drug delivery to the brain and a major challenge for the development of therapeutic approaches to CNS disorders. The widespread interest in understanding how circadian clocks modulate many processes that define drug delivery in order to predict the variability in drug safety and efficacy is the next bridge to improve effective treatment. In this context, this study aims at characterizing the circadian expression of ABCG2 and DNPZ circadian transport profile using an in vitro model of the BCSFB. We found that ABCG2 displays a circadian pattern and DNPZ is transported in a circadian way across this barrier. This study will strongly impact on the capacity to modulate the BCSFB in order to control the penetration of DNPZ into the brain and improve therapeutic strategies for the treatment of AD according to the time of the day.
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Affiliation(s)
- André Furtado
- CICS-UBI, Health Sciences Research Centre, Faculty of Health Sciences, Universityof Beira Interior, Avenida Infante Dom Henrique, 6200-506 Covilhã, Portugal
| | - Ana Catarina Duarte
- CICS-UBI, Health Sciences Research Centre, Faculty of Health Sciences, Universityof Beira Interior, Avenida Infante Dom Henrique, 6200-506 Covilhã, Portugal
| | - Ana R. Costa
- CICS-UBI, Health Sciences Research Centre, Faculty of Health Sciences, Universityof Beira Interior, Avenida Infante Dom Henrique, 6200-506 Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI, Health Sciences Research Centre, Faculty of Health Sciences, Universityof Beira Interior, Avenida Infante Dom Henrique, 6200-506 Covilhã, Portugal
| | - Cecília R. A. Santos
- CICS-UBI, Health Sciences Research Centre, Faculty of Health Sciences, Universityof Beira Interior, Avenida Infante Dom Henrique, 6200-506 Covilhã, Portugal
| | - Eugenia Gallardo
- Laboratório de Fármaco-Toxicologia-UBIMedical, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Telma Quintela
- CICS-UBI, Health Sciences Research Centre, Faculty of Health Sciences, Universityof Beira Interior, Avenida Infante Dom Henrique, 6200-506 Covilhã, Portugal
- Faculty of Health Sciences, Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal
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3
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Abstract
The brain is a complex organ, fundamentally changing across the day to perform basic functions like sleep, thought, and regulating whole-body physiology. This requires a complex symphony of nutrients, hormones, ions, neurotransmitters and more to be properly distributed across the brain to maintain homeostasis throughout 24 hours. These solutes are distributed both by the blood and by cerebrospinal fluid. Cerebrospinal fluid contents are distinct from the general circulation because of regulation at brain barriers including the choroid plexus, glymphatic system, and blood-brain barrier. In this review, we discuss the overlapping circadian (≈24-hour) rhythms in brain fluid biology and at the brain barriers. Our goal is for the reader to gain both a fundamental understanding of brain barriers alongside an understanding of the interactions between these fluids and the circadian timing system. Ultimately, this review will provide new insight into how alterations in these finely tuned clocks may lead to pathology.
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Affiliation(s)
- Velia S Vizcarra
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Ryann M Fame
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Lauren M Hablitz
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, 14642, USA
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4
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Chothe PP, Mitra P, Nakakariya M, Ramsden D, Rotter CJ, Sandoval P, Tohyama K. Drug transporters in drug disposition - the year 2022 in review. Drug Metab Rev 2023; 55:343-370. [PMID: 37644867 DOI: 10.1080/03602532.2023.2252618] [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: 05/15/2023] [Accepted: 08/11/2023] [Indexed: 08/31/2023]
Abstract
On behalf of all the authors, I am pleased to share our third annual review on drug transporter science with an emphasis on articles published and deemed influential in signifying drug transporters' role in drug disposition in the year 2022. As the drug transporter field is rapidly evolving several key findings were noted including promising endogenous biomarkers, rhythmic activity, IVIVE approaches in transporter-mediated clearance, new modality interaction, and transporter effect on gut microbiome. As identified previously (Chothe et Cal. 2021, 2022) the goal of this review is to highlight key findings without a comprehensive overview of each article and to this end, each coauthor independently selected 1-3 peer-reviewed articles published or available online in the year 2022 (Table 1). Each article is summarized in synopsis and commentary with unbiased viewpoints by each coauthor. We strongly encourage readers to consult original articles for specifics of the study. Finally, I would like to thank all coauthors for their continued support in writing this annual review on drug transporters and invite anyone interested in contributing to future versions of this review.
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Affiliation(s)
- Paresh P Chothe
- Department of Drug Metabolism and Pharmacokinetics, Oncology Research and Development, AstraZeneca, Waltham, MA, USA
| | - Pallabi Mitra
- Department of Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharmaceuticals Inc, Ridgefield, CT, USA
| | - Masanori Nakakariya
- Drug Metabolism and Pharmacokinetics Research Laboratories, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Diane Ramsden
- Department of Drug Metabolism and Pharmacokinetics, Oncology Research and Development, AstraZeneca, Waltham, MA, USA
| | - Charles J Rotter
- Global Drug Metabolism and Pharmacokinetics, Takeda Development Center Americas, Inc. (TDCA), San Diego, CA, USA
| | - Philip Sandoval
- Global Drug Metabolism and Pharmacokinetics, Takeda Development Center Americas, Inc. (TDCA), Lexington, MA, USA
| | - Kimio Tohyama
- Drug Metabolism and Pharmacokinetics Research Laboratories, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
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5
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Mineiro R, Albuquerque T, Neves AR, Santos CRA, Costa D, Quintela T. The Role of Biological Rhythms in New Drug Formulations to Cross the Brain Barriers. Int J Mol Sci 2023; 24:12541. [PMID: 37628722 PMCID: PMC10454916 DOI: 10.3390/ijms241612541] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
For brain protection, the blood-brain barrier and blood-cerebrospinal fluid barrier limit the traffic of molecules between blood and brain tissue and between blood and cerebrospinal fluid, respectively. Besides their protective function, brain barriers also limit the passage of therapeutic drugs to the brain, which constitutes a great challenge for the development of therapeutic strategies for brain disorders. This problem has led to the emergence of novel strategies to treat neurological disorders, like the development of nanoformulations to deliver therapeutic agents to the brain. Recently, functional molecular clocks have been identified in the blood-brain barrier and in the blood-cerebrospinal fluid barrier. In fact, circadian rhythms in physiological functions related to drug disposition were also described in brain barriers. This opens the possibility for chronobiological approaches that aim to use time to improve drug efficacy and safety. The conjugation of nanoformulations with chronobiology for neurological disorders is still unexplored. Facing this, here, we reviewed the circadian rhythms in brain barriers, the nanoformulations studied to deliver drugs to the brain, and the nanoformulations with the potential to be conjugated with a chronobiological approach to therapeutic strategies for the brain.
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Affiliation(s)
- Rafael Mineiro
- CICS-UBI—Health Sciences Research Centre, Universidade da Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Tânia Albuquerque
- CICS-UBI—Health Sciences Research Centre, Universidade da Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ana Raquel Neves
- CICS-UBI—Health Sciences Research Centre, Universidade da Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Cecília R. A. Santos
- CICS-UBI—Health Sciences Research Centre, Universidade da Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Diana Costa
- CICS-UBI—Health Sciences Research Centre, Universidade da Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Telma Quintela
- CICS-UBI—Health Sciences Research Centre, Universidade da Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
- UDI-IPG—Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal
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6
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Fame RM, Kalugin PN, Petrova B, Xu H, Soden PA, Shipley FB, Dani N, Grant B, Pragana A, Head JP, Gupta S, Shannon ML, Chifamba FF, Hawks-Mayer H, Vernon A, Gao F, Zhang Y, Holtzman MJ, Heiman M, Andermann ML, Kanarek N, Lipton JO, Lehtinen MK. Defining diurnal fluctuations in mouse choroid plexus and CSF at high molecular, spatial, and temporal resolution. Nat Commun 2023; 14:3720. [PMID: 37349305 PMCID: PMC10287727 DOI: 10.1038/s41467-023-39326-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 06/07/2023] [Indexed: 06/24/2023] Open
Abstract
Transmission and secretion of signals via the choroid plexus (ChP) brain barrier can modulate brain states via regulation of cerebrospinal fluid (CSF) composition. Here, we developed a platform to analyze diurnal variations in male mouse ChP and CSF. Ribosome profiling of ChP epithelial cells revealed diurnal translatome differences in metabolic machinery, secreted proteins, and barrier components. Using ChP and CSF metabolomics and blood-CSF barrier analyses, we observed diurnal changes in metabolites and cellular junctions. We then focused on transthyretin (TTR), a diurnally regulated thyroid hormone chaperone secreted by the ChP. Diurnal variation in ChP TTR depended on Bmal1 clock gene expression. We achieved real-time tracking of CSF-TTR in awake TtrmNeonGreen mice via multi-day intracerebroventricular fiber photometry. Diurnal changes in ChP and CSF TTR levels correlated with CSF thyroid hormone levels. These datasets highlight an integrated platform for investigating diurnal control of brain states by the ChP and CSF.
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Affiliation(s)
- Ryann M Fame
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Department of Neurosurgery, Stanford University, Stanford, CA, 94305, USA
| | - Peter N Kalugin
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Graduate Program in Neuroscience, Harvard Medical School, Boston, MA, 02115, USA
- Harvard/MIT MD-PhD Program, Harvard Medical School, Boston, MA, 02115, USA
| | - Boryana Petrova
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Huixin Xu
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Paul A Soden
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Frederick B Shipley
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Graduate Program in Biophysics, Harvard University, Cambridge, MA, 02138, USA
| | - Neil Dani
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Bradford Grant
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Aja Pragana
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Joshua P Head
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Suhasini Gupta
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Morgan L Shannon
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Fortunate F Chifamba
- Department of Neurology and the F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, 02115, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, 02115, USA
| | - Hannah Hawks-Mayer
- Department of Neurology and the F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, 02115, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, 02115, USA
| | - Amanda Vernon
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA
- Picower Institute for Learning and Memory, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Fan Gao
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA
- Picower Institute for Learning and Memory, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Lyterian Therapeutics, South San Francisco, 94080, CA, USA
| | - Yong Zhang
- Pulmonary and Critical Care Medicine, Department of Medicine, Washington University, St. Louis, MO, 63110, USA
| | - Michael J Holtzman
- Pulmonary and Critical Care Medicine, Department of Medicine, Washington University, St. Louis, MO, 63110, USA
| | - Myriam Heiman
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA
- Picower Institute for Learning and Memory, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Mark L Andermann
- Graduate Program in Neuroscience, Harvard Medical School, Boston, MA, 02115, USA
- Graduate Program in Biophysics, Harvard University, Cambridge, MA, 02138, USA
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, 02115, USA
| | - Naama Kanarek
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Jonathan O Lipton
- Department of Neurology and the F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, 02115, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, 02115, USA
| | - Maria K Lehtinen
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, 02115, USA.
- Graduate Program in Neuroscience, Harvard Medical School, Boston, MA, 02115, USA.
- Graduate Program in Biophysics, Harvard University, Cambridge, MA, 02138, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
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7
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Furtado A, Costa D, Lemos MC, Cavaco JE, Santos CRA, Quintela T. The impact of biological clock and sex hormones on the risk of disease. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 137:39-81. [PMID: 37709381 DOI: 10.1016/bs.apcsb.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Molecular clocks are responsible for defining 24-h cycles of behaviour and physiology that are called circadian rhythms. Several structures and tissues are responsible for generating these circadian rhythms and are named circadian clocks. The suprachiasmatic nucleus of the hypothalamus is believed to be the master circadian clock receiving light input via the optic nerve and aligning internal rhythms with environmental cues. Studies using both in vivo and in vitro methodologies have reported the relationship between the molecular clock and sex hormones. The circadian system is directly responsible for controlling the synthesis of sex hormones and this synthesis varies according to the time of day and phase of the estrous cycle. Sex hormones also directly interact with the circadian system to regulate circadian gene expression, adjust biological processes, and even adjust their own synthesis. Several diseases have been linked with alterations in either the sex hormone background or the molecular clock. So, in this chapter we aim to summarize the current understanding of the relationship between the circadian system and sex hormones and their combined role in the onset of several related diseases.
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Affiliation(s)
- André Furtado
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Portugal
| | - Diana Costa
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Portugal
| | - Manuel C Lemos
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Portugal
| | - J Eduardo Cavaco
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Portugal
| | - Cecília R A Santos
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Portugal
| | - Telma Quintela
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Portugal; UDI-IPG, Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, Guarda, Portugal.
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8
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Furtado A, Esgalhado AJ, Duarte AC, Costa AR, Costa-Brito AR, Carro E, Ishikawa H, Schroten H, Schwerk C, Gonçalves I, Arosa FA, Santos CRA, Quintela T. Circadian rhythmicity of amyloid-beta-related molecules is disrupted in the choroid plexus of a female Alzheimer's disease mouse model. J Neurosci Res 2023; 101:524-540. [PMID: 36583371 DOI: 10.1002/jnr.25164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/20/2022] [Accepted: 12/18/2022] [Indexed: 12/31/2022]
Abstract
The choroid plexus (CP) is part of the blood-cerebrospinal fluid barrier (BCSFB) and was recently described as an important component of the circadian clock system. It is the principal source of cerebrospinal fluid (CSF) and responsible for the synthesis and secretion of various neuroprotective peptides including those involved in amyloid-β (Aβ) transport/degradation, contributing to Aβ homeostasis. Inadequate Aβ metabolic clearance and transport across the BCSFB have been associated with circadian dysfunctions in Alzheimer's disease (AD) patients. To investigate whether AD pathology influences Aβ scavengers circadian expression, we collected CP at different time points from an AD mouse model (APP/PS1) (female and male animals, aged 6- and 12-months-old) and analyzed their mRNA expression by Real-time RT-PCR. Only angiotensin-converting enzyme (Ace) expression in 6-month-old female wild-type mice and transthyretin (Ttr) expression in 12-month-old female wild-type mice presented significant rhythmicity. The circadian rhythmicity of Ace and Ttr, prompt us to analyze the involvement of circadian rhythm in Aβ uptake. A human CP papilloma (HIBCPP) cell line was incubated with Aβ-488 and uptake was evaluated at different time points using flow cytometry. Aβ uptake displayed circadian rhythmicity. Our results suggest that AD might affect Aβ scavengers rhythmicity and that Aβ clearance is a rhythmic process possibly regulated by the rhythmic expression of Aβ scavengers.
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Affiliation(s)
- André Furtado
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - André J Esgalhado
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Ana C Duarte
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal.,UDI-IPG- Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, Guarda, Portugal
| | - Ana R Costa
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Ana R Costa-Brito
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Eva Carro
- Networked Biomedical Research Center in Neurodegenerative Diseases (CIBERNED), Madrid, Spain.,Group of Neurodegenerative Diseases, Hospital 12 de Octubre Research Institute (imas12), Madrid, Spain
| | - Hiroshi Ishikawa
- Laboratory of Clinical Regenerative Medicine, Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Horst Schroten
- Mannheim Medical Faculty, University of Heidelberg, Childrens Hospital, Mannheim, Germany
| | - Christian Schwerk
- Mannheim Medical Faculty, University of Heidelberg, Childrens Hospital, Mannheim, Germany
| | - Isabel Gonçalves
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Fernando A Arosa
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Cecília R A Santos
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Telma Quintela
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal.,UDI-IPG- Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, Guarda, Portugal
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9
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Liška K, Dočkal T, Houdek P, Sládek M, Lužná V, Semenovykh K, Drapšin M, Sumová A. Lithium affects the circadian clock in the choroid plexus - A new role for an old mechanism. Biomed Pharmacother 2023; 159:114292. [PMID: 36701987 DOI: 10.1016/j.biopha.2023.114292] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/10/2023] [Accepted: 01/20/2023] [Indexed: 01/27/2023] Open
Abstract
Lithium is an effective mood stabilizer, but the mechanism of its therapeutic action is not well understood. We investigated the effect of lithium on the circadian clock located in the ventricle barrier complex containing the choroid plexus (CP), a part of the glymphatic system that influences gross brain function via the production of cerebrospinal fluid. The mPer2Luc mice were injected with lithium chloride (LiCl) or vehicle, and their effects on the clock gene Nr1d1 in CP were detected by RT qPCR. CP organotypic explants were prepared to monitor bioluminescence rhythms in real time and examine the responses of the CP clock to LiCl and inhibitors of glycogen synthase kinase-3 (CHIR-99021) and protein kinase C (chelerythrine). LiCl affected Nr1d1 expression levels in CP in vivo and dose-dependently delayed the phase and prolonged the period of the CP clock in vitro. LiCl and CHIR-99021 had different effects on 1] CP clock parameters (amplitude, period, phase), 2] dexamethasone-induced phase shifts of the CP clock, and 3] dynamics of PER2 degradation and de novo accumulation. LiCl-induced phase delays were significantly reduced by chelerythrine, suggesting the involvement of PKC activity. The effects on the CP clock may be involved in the therapeutic effects of lithium and hypothetically improve brain function in psychiatric patients by aligning the function of the CP clock-related glymphatic system with the sleep-wake cycle. Importantly, our data argue for personalized timing of lithium treatment in BD patients.
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Affiliation(s)
- Karolína Liška
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tereza Dočkal
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Pavel Houdek
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Sládek
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Vendula Lužná
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Kateryna Semenovykh
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Milica Drapšin
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Alena Sumová
- Laboratory of Biological Rhythms, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic.
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10
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Choroid Plexus Aquaporins in CSF Homeostasis and the Glymphatic System: Their Relevance for Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24010878. [PMID: 36614315 PMCID: PMC9821203 DOI: 10.3390/ijms24010878] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/27/2022] [Accepted: 12/27/2022] [Indexed: 01/05/2023] Open
Abstract
The glymphatic system, a fluid-clearance pathway involved in brain waste clearance, is known to be impaired in neurological disorders, including Alzheimer's disease (AD). For this reason, it is important to understand the specific mechanisms and factors controlling glymphatic function. This pathway enables the flow of cerebrospinal fluid (CSF) into the brain and subsequently the brain interstitium, supported by aquaporins (AQPs). Continuous CSF transport through the brain parenchyma is critical for the effective transport and drainage of waste solutes, such as toxic proteins, through the glymphatic system. However, a balance between CSF production and secretion from the choroid plexus, through AQP regulation, is also needed. Thus, any condition that affects CSF homeostasis will also interfere with effective waste removal through the clearance glymphatic pathway and the subsequent processes of neurodegeneration. In this review, we highlight the role of AQPs in the choroid plexus in the modulation of CSF homeostasis and, consequently, the glymphatic clearance pathway, with a special focus on AD.
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11
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Saunders NR, Dziegielewska KM, Fame RM, Lehtinen MK, Liddelow SA. The choroid plexus: a missing link in our understanding of brain development and function. Physiol Rev 2023; 103:919-956. [PMID: 36173801 PMCID: PMC9678431 DOI: 10.1152/physrev.00060.2021] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 09/01/2022] [Accepted: 09/17/2022] [Indexed: 11/22/2022] Open
Abstract
Studies of the choroid plexus lag behind those of the more widely known blood-brain barrier, despite a much longer history. This review has two overall aims. The first is to outline long-standing areas of research where there are unanswered questions, such as control of cerebrospinal fluid (CSF) secretion and blood flow. The second aim is to review research over the past 10 years where the focus has shifted to the idea that there are choroid plexuses located in each of the brain's ventricles that make specific contributions to brain development and function through molecules they generate for delivery via the CSF. These factors appear to be particularly important for aspects of normal brain growth. Most research carried out during the twentieth century dealt with the choroid plexus, a brain barrier interface making critical contributions to the composition and stability of the brain's internal environment throughout life. More recent research in the twenty-first century has shown the importance of choroid plexus-generated CSF in neurogenesis, influence of sex and other hormones on choroid plexus function, and choroid plexus involvement in circadian rhythms and sleep. The advancement of technologies to facilitate delivery of brain-specific therapies via the CSF to treat neurological disorders is a rapidly growing area of research. Conversely, understanding the basic mechanisms and implications of how maternal drug exposure during pregnancy impacts the developing brain represents another key area of research.
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Affiliation(s)
- Norman R Saunders
- Department of Neuroscience, The Alfred Centre, Monash University, Melbourne, Victoria, Australia
| | | | - Ryann M Fame
- Department of Pathology, Boston Children's Hospital, Boston, Massachusetts
| | - Maria K Lehtinen
- Department of Pathology, Boston Children's Hospital, Boston, Massachusetts
| | - Shane A Liddelow
- Neuroscience Institute, NYU Grossman School of Medicine, New York, New York
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, New York
- Department of Ophthalmology, NYU Grossman School of Medicine, New York, New York
- Parekh Center for Interdisciplinary Neurology, NYU Grossman School of Medicine, New York, New York
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12
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Bitanihirwe BKY, Lizano P, Woo TUW. Deconstructing the functional neuroanatomy of the choroid plexus: an ontogenetic perspective for studying neurodevelopmental and neuropsychiatric disorders. Mol Psychiatry 2022; 27:3573-3582. [PMID: 35618887 PMCID: PMC9133821 DOI: 10.1038/s41380-022-01623-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/15/2022] [Accepted: 05/11/2022] [Indexed: 02/08/2023]
Abstract
The choroid plexus (CP) is a delicate and highly vascularized structure in the brain comprised of a dense network of fenestrated capillary loops that help in the synthesis, secretion and circulation of cerebrospinal fluid (CSF). This unique neuroanatomical structure is comprised of arachnoid villi stemming from frond-like surface projections-that protrude into the lumen of the four cerebral ventricles-providing a key source of nutrients to the brain parenchyma in addition to serving as a 'sink' for central nervous system metabolic waste. In fact, the functions of the CP are often described as being analogous to those of the liver and kidney. Beyond forming a barrier/interface between the blood and CSF compartments, the CP has been identified as a modulator of leukocyte trafficking, inflammation, cognition, circadian rhythm and the gut brain-axis. In recent years, advances in molecular biology techniques and neuroimaging along with the use of sophisticated animal models have played an integral role in shaping our understanding of how the CP-CSF system changes in relation to the maturation of neural circuits during critical periods of brain development. In this article we provide an ontogenetic perspective of the CP and review the experimental evidence implicating this structure in the pathophysiology of neurodevelopmental and neuropsychiatric disorders.
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Affiliation(s)
- Byron K Y Bitanihirwe
- Humanitarian and Conflict Response Institute, University of Manchester, Manchester, UK.
| | - Paulo Lizano
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Translational Neuroscience Division, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Tsung-Ung W Woo
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA
- Program in Molecular Neuropathology, McLean Hospital, Belmont, MA, USA
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13
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Christensen J, Li C, Mychasiuk R. Choroid plexus function in neurological homeostasis and disorders: The awakening of the circadian clocks and orexins. J Cereb Blood Flow Metab 2022; 42:1163-1175. [PMID: 35296175 PMCID: PMC9207490 DOI: 10.1177/0271678x221082786] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
As research regarding the role of circadian rhythms, sleep, and the orexinergic system in neurodegenerative diseases is growing, it is surprising that the choroid plexus (CP) remains underappreciated in this realm. Despite its extensive role in the regulation of circadian rhythms and orexinergic signalling, as well as acting as the primary conduit between cerebrospinal fluid (CSF) and the circulatory system, providing a mechanism by which toxic waste molecules can be removed from the brain, the CP has been largely unexplored in neurodegeneration. In this review, we explore the role of the CP in maintaining brain homeostasis and circadian rhythms, regulating CSF dynamics, and how these functions change across the lifespan, from development to senescence. In addition, we examine the relationship between the CP, orexinergic signalling, and the glymphatic system, highlighting gaps in the literature and areas that require immediate exploration. Finally, we assess current knowledge, including possible therapeutic strategies, regarding the role of the CP in neurological disorders, such as traumatic brain injury, migraine, Alzheimer's disease, and multiple sclerosis.
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Affiliation(s)
- Jennaya Christensen
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Crystal Li
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Richelle Mychasiuk
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
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14
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Yamaguchi T, Hamada T, Iijima N. Differences in recovery processes of circadian oscillators in various tissues after sevoflurane treatment in vivo. Biochem Biophys Rep 2022; 30:101258. [PMID: 35434385 PMCID: PMC9006766 DOI: 10.1016/j.bbrep.2022.101258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/23/2022] [Accepted: 04/01/2022] [Indexed: 11/30/2022] Open
Abstract
The inhalation anesthetic sevoflurane reversibly suppresses Period2 (Per2) mRNA expression in the suprachiasmatic nucleus (SCN). However, a discrepancy exists in phase shifting of the Per2 expression rhythm between sevoflurane application in rats (in vivo application) and explants (ex vivo application). This investigation aimed to resolve this issue. First, tissues from the SCN, choroid plexus in the lateral ventricle (CP-LV), and choroid plexus in the fourth ventricle (CP–4V), which are robust circadian oscillators, and pineal gland (PG) tissue, which is a circadian influencer, were prepared from Per2::dLuc transgenic rats. Significant phase responses of bioluminescence rhythms for different preparation times were monitored in the four tissue explant types. Second, tissue explants were prepared from anesthetized rats immediately after sevoflurane treatment, and bioluminescence rhythms were compared with those from non-anesthetized rats at various preparation times. Regarding bioluminescence rhythm phases, in vivo application of sevoflurane induced phase shifts in CP-LV, CP-4V, and PG explants according to the times that rats were administered anesthesia and the explants were prepared. Phase shifts in these peripheral explants were withdrawn due to the recovery period after the anesthetic treatment, which suggests that peripheral tissues require the assistance of related tissues or organs to correct phase shifts. In contrast, no phase shifts were observed in SCN explants. These results indicated that SCN explants can independently correct bioluminescence rhythm phase. The bioluminescence intensity of explants was also decreased after in vivo sevoflurane application. The suppressive effects on SCN explants were withdrawn due to a recovery day after the anesthetic treatment. In contrast, the suppressive effects on the bioluminescence intensities of CP-LV, CP-4V, and PG explants remained at 30 days after anesthesia administration. These results suggest that anesthetic suppression is imprinted within the peripheral tissues. We monitored bioluminescence in explants from Per2::dLuc rats after anesthesia. Sevoflurane induced phase shifts in peripheral explants but not in the SCN. Phase shifts in peripheral explants were withdrawn due to recovery period. Sevoflurane weakened the bioluminescence intensity of all explant types. The suppressive effects on peripheral explants were remained in a week later.
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Affiliation(s)
- Takeshi Yamaguchi
- Center for Basic Medical Research, International University of Health and Welfare, Ohtawara, Tochigi, Japan
| | - Toshiyuki Hamada
- Department of Pharmacology, International University of Health and Welfare, Ohtawara, Tochigi, Japan
| | - Norio Iijima
- Center for Basic Medical Research, International University of Health and Welfare, Ohtawara, Tochigi, Japan
- Corresponding author.
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15
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Furtado A, Mineiro R, Duarte AC, Gonçalves I, Santos CR, Quintela T. The Daily Expression of ABCC4 at the BCSFB Affects the Transport of Its Substrate Methotrexate. Int J Mol Sci 2022; 23:ijms23052443. [PMID: 35269592 PMCID: PMC8909972 DOI: 10.3390/ijms23052443] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/20/2022] [Accepted: 02/21/2022] [Indexed: 02/01/2023] Open
Abstract
The choroid plexuses (CPs), located in the brain ventricles, form an interface between the blood and the cerebrospinal fluid named the blood-cerebrospinal barrier, which, by the presence of tight junctions, detoxification enzymes, and membrane transporters, limits the traffic of molecules into the central nervous system. It has already been shown that sex hormones regulate several CP functions, including the oscillations of its clock genes. However, it is less explored how the circadian rhythm regulates CP functions. This study aimed to evaluate the impact of sex hormones and circadian rhythms on the function of CP membrane transporters. The 24 h transcription profiles of the membrane transporters rAbca1, rAbcb1, rAbcc1, rAbcc4, rAbcg2, rAbcg4, and rOat3 were characterized in the CPs of intact male, intact female, sham-operated female, and gonadectomized rats. We found that rAbcc1 is expressed in a circadian way in the CPs of intact male rats, rAbcg2 in the CPs of intact female rats, and both rAbcc4 and rOat3 mRNA levels were expressed in a circadian way in the CPs of intact male and female rats. Next, using an in vitro model of the human blood–cerebrospinal fluid barrier, we also found that methotrexate (MTX) is transported in a circadian way across this barrier. The circadian pattern of Abcc4 found in the human CP epithelial papilloma cells might be partially responsible for MTX circadian transport across the basal membrane of CP epithelial cells.
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Affiliation(s)
- André Furtado
- CICS-UBI—Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (A.F.); (R.M.); (A.C.D.); (I.G.); (C.R.S.)
| | - Rafael Mineiro
- CICS-UBI—Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (A.F.); (R.M.); (A.C.D.); (I.G.); (C.R.S.)
| | - Ana Catarina Duarte
- CICS-UBI—Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (A.F.); (R.M.); (A.C.D.); (I.G.); (C.R.S.)
| | - Isabel Gonçalves
- CICS-UBI—Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (A.F.); (R.M.); (A.C.D.); (I.G.); (C.R.S.)
| | - Cecília R. Santos
- CICS-UBI—Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (A.F.); (R.M.); (A.C.D.); (I.G.); (C.R.S.)
| | - Telma Quintela
- CICS-UBI—Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (A.F.); (R.M.); (A.C.D.); (I.G.); (C.R.S.)
- UDI-IPG—Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal
- Correspondence:
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16
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Gião T, Teixeira T, Almeida MR, Cardoso I. Choroid Plexus in Alzheimer’s Disease—The Current State of Knowledge. Biomedicines 2022; 10:biomedicines10020224. [PMID: 35203434 PMCID: PMC8869376 DOI: 10.3390/biomedicines10020224] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 01/31/2023] Open
Abstract
The choroid plexus (CP), located in each of the four ventricles of the brain, is formed by a monolayer of epithelial cells that surrounds a highly vascularized connective tissue with permeable capillaries. These cells are joined by tight junctions forming the blood–cerebrospinal fluid barrier (BCSFB), which strictly regulates the exchange of substances between the blood and cerebrospinal fluid (CSF). The primary purpose of the CP is to secrete CSF, but it also plays a role in the immune surveillance of the central nervous system (CNS) and in the removal of neurotoxic compounds from the CSF. According to recent findings, the CP is also involved in the modulation of the circadian cycle and neurogenesis. In diseases such as Alzheimer’s disease (AD), the function of the CP is impaired, resulting in an altered secretory, barrier, transport, and immune function. This review describes the current state of knowledge concerning the roles of the CP and BCSFB in the pathophysiology of AD and summarizes recently proposed therapies that aim to restore CP and BCSFB functions.
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Affiliation(s)
- Tiago Gião
- Molecular Neurobiology Group, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (T.T.); (M.R.A.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- Departamento de Biologia Molecular, ICBAS—Instituto de Ciências Biomédicas Abel Salazar, 4050-013 Porto, Portugal
- Correspondence: (T.G.); (I.C.)
| | - Tiago Teixeira
- Molecular Neurobiology Group, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (T.T.); (M.R.A.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- Faculdade de Medicina, Universidade do Porto, 4200-319 Porto, Portugal
| | - Maria Rosário Almeida
- Molecular Neurobiology Group, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (T.T.); (M.R.A.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- Departamento de Biologia Molecular, ICBAS—Instituto de Ciências Biomédicas Abel Salazar, 4050-013 Porto, Portugal
| | - Isabel Cardoso
- Molecular Neurobiology Group, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (T.T.); (M.R.A.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- Departamento de Biologia Molecular, ICBAS—Instituto de Ciências Biomédicas Abel Salazar, 4050-013 Porto, Portugal
- Correspondence: (T.G.); (I.C.)
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17
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Fang Z, Zhu L, Jin Y, Chen Y, Chang W, Yao Y. Downregulation of Arntl mRNA Expression in Women with Hypertension: A Case-Control Study. Kidney Blood Press Res 2021; 46:741-748. [PMID: 34515147 PMCID: PMC8743905 DOI: 10.1159/000518669] [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: 03/05/2021] [Accepted: 07/25/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Previous studies have reported that disturbance of endogenous circadian rhythms enhances the chance of hypertension and suggested that circadian clock genes could have a crucial function in the onset of the disease. This case-control study was aimed to investigate the association of the mRNA expression of aryl hydrocarbon receptor nuclear translocator like (Arntl), clock circadian regulator (Clock), and period circadian regulators 1 and 2 (Per1 and Per2) with hypertension and blood pressure levels. METHODS A total of 172 subjects were recruited in this study, including 86 hypertension and 86 nonhypertension controls. The mRNA expression levels in peripheral blood mononuclear cells were determined by real-time quantitative polymerase chain reaction. The differences in Arntl, Clock, Per1, and Per2 mRNA expression were compared between the 2 groups, and the relationship between mRNA expression and cardiometabolic risk profiles was also assessed. RESULTS We found that the mRNA expression of Arntl was downregulated in the hypertension cases compared with controls in women (1.10 [0.66, 1.71] vs. 1.30 [0.99, 2.06], p = 0.031). There was a significant negative correlation between the Arntl mRNA expression and SBP (r = -0.301, p = 0.004) and DBP (r = -0.222, p = 0.034) in women. In men, a negative correlation between the Per1 mRNA expression and SBP (r = -0.247, p = 0.026) was found. CONCLUSIONS The Arntl mRNA expression may play an important role in progression of hypertension in women.
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Affiliation(s)
- Zhengmei Fang
- Department of Epidemiology, School of Public Health, and Institute of Chronic Disease Prevention and Control, Wannan Medical College, Wuhu, China
| | - Lijun Zhu
- Department of Epidemiology, School of Public Health, and Institute of Chronic Disease Prevention and Control, Wannan Medical College, Wuhu, China
| | - Yuelong Jin
- Department of Epidemiology, School of Public Health, and Institute of Chronic Disease Prevention and Control, Wannan Medical College, Wuhu, China
| | - Yan Chen
- Department of Epidemiology, School of Public Health, and Institute of Chronic Disease Prevention and Control, Wannan Medical College, Wuhu, China
| | - Weiwei Chang
- Department of Epidemiology, School of Public Health, and Institute of Chronic Disease Prevention and Control, Wannan Medical College, Wuhu, China
| | - Yingshui Yao
- Department of Epidemiology, School of Public Health, and Institute of Chronic Disease Prevention and Control, Wannan Medical College, Wuhu, China
- Anhui College of Traditional Chinese Medicine, Wuhu, China
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18
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Szczepkowska A, Harazin A, Barna L, Deli MA, Skipor J. Identification of Reference Genes for Circadian Studies on Brain Microvessels and Choroid Plexus Samples Isolated from Rats. Biomolecules 2021; 11:biom11081227. [PMID: 34439891 PMCID: PMC8394446 DOI: 10.3390/biom11081227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 12/18/2022] Open
Abstract
Delivery of putative compounds of therapeutic value to the brain is limited by brain barriers: the blood–brain barrier located in the endothelium of the brain microvessels (BrMV) and the blood–cerebrospinal fluid barrier located in the epithelium of the choroid plexus (ChP). Understanding their function and modulation by the circadian clock may enhance the efficacy of brain-targeting therapies. The aim of the present study was to evaluate the stability of 10 reference genes in the BrMV and ChP, isolated from male and female rats at six time points (ZT1, 5, 9, 13, 17, and 21). Gene evaluations were performed by qPCR, analyzed by RefFinder tool, and verified by analyzing the expression of the brain and muscle ARNT-like 1 (Bmal1) using the qPCR and digital PCR methods. We identified as the most stable genes for circadian studies tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein zeta (Ywhaz) and apolipoprotein E (Apoe) for BrMV, and beta actin (Actb) and hypoxanthine-guanine phosphoribosyltransferase (Hprt1) for ChP. After verification, ribosomal protein (Rps18) was also included as a sufficient reference gene. Additionally, the observed gender difference in the Bmal1 oscillations in both BrMV and ChP suggests that separate studies for each gender are recommended.
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Affiliation(s)
- Aleksandra Szczepkowska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland;
- Correspondence: (A.S.); (M.A.D.); Tel.: +48-89-539-3125 (A.S.); +36-62-599602 (M.A.D.)
| | - András Harazin
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (A.H.); (L.B.)
| | - Lilla Barna
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (A.H.); (L.B.)
| | - Mária A. Deli
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (A.H.); (L.B.)
- Correspondence: (A.S.); (M.A.D.); Tel.: +48-89-539-3125 (A.S.); +36-62-599602 (M.A.D.)
| | - Janina Skipor
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland;
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19
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Quintela T, Furtado A, Duarte AC, Gonçalves I, Myung J, Santos CRA. The role of circadian rhythm in choroid plexus functions. Prog Neurobiol 2021; 205:102129. [PMID: 34343629 DOI: 10.1016/j.pneurobio.2021.102129] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 07/22/2021] [Accepted: 07/28/2021] [Indexed: 12/17/2022]
Abstract
For several years, a great effort has been devoted to understand how circadian oscillations in physiological processes are determined by the circadian clock system. This system is composed by the master clock at the suprachiasmatic nucleus which sets the pace and tunes peripheral clocks in several organs. It was recently demonstrated that the choroid plexus epithelial cells that compose the blood-cerebrospinal fluid barrier hold a circadian clock which might control their multiple functions with implications for the maintenance of brain homeostasis. However, the choroid plexus activities regulated by its inner clock are still largely unknown. In this review, we propose that several choroid plexus functions might be regulated by the circadian clock, alike in other tissues. We provide evidences that the timing of cerebrospinal fluid secretion, clearance of amyloid-beta peptides and xenobiotics, and the barrier function of the blood-cerebrospinal fluid barrier are regulated by the circadian clock. These data, highlight that the circadian regulation of the blood-cerebrospinal fluid barrier must be taken into consideration for enhancing drug delivery to central nervous system disorders.
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Affiliation(s)
- Telma Quintela
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal.
| | - André Furtado
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ana C Duarte
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Jihwan Myung
- Graduate Institute of Mind, Brain, and Consciousness, Taipei Medical University, No. 172-1 Sec. 2 Keelung Road, Da'an District, Taipei 106, Taiwan; Brain and Consciousness Research Centre, Shuang Ho Hospital, Ministry of Health and Welfare, No. 291 Zhongzheng Road, Zhonghe District, New Taipei City 235, Taiwan
| | - Cecília R A Santos
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
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20
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Exploring the link between chronobiology and drug delivery: effects on cancer therapy. J Mol Med (Berl) 2021; 99:1349-1371. [PMID: 34213595 DOI: 10.1007/s00109-021-02106-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 02/01/2023]
Abstract
Circadian clock is an impressive timing system responsible for the control of several metabolic, physiological and behavioural processes. Nowadays, the connection between the circadian clock and cancer occurrence and development is consensual. Therefore, the inclusion of circadian timing into cancer therapy may potentially offer a more effective and less toxic approach. This way, chronotherapy has been shown to improve cancer treatment efficacy. Despite this relevant finding, its clinical application is poorly exploited. The conception of novel anticancer drug delivery systems and the combination of chronobiology with nanotechnology may provide a powerful tool to optimize cancer therapy, instigating the incorporation of the circadian timing into clinical practice towards a more personalized drug delivery. This review focuses on the recent advances in the field of cancer chronobiology, on the link between cancer and the disruption of circadian rhythms and on the promising targeted drug nanodelivery approaches aiming the clinical application of cancer chronotherapy.
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21
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Frase S, Kaiser S, Steimer M, Selzner L, Foit NA, Niesen WD, Schallner N. Patients with Subarachnoid Hemorrhage Exhibit Disturbed Expression Patterns of the Circadian Rhythm Gene Period-2. Life (Basel) 2021; 11:life11020124. [PMID: 33562664 PMCID: PMC7915417 DOI: 10.3390/life11020124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 01/27/2021] [Accepted: 02/01/2021] [Indexed: 12/12/2022] Open
Abstract
Circadian rhythm gene expression in cerebral pacemaker regions is regulated by a transcriptional-translational feedback loop across the 24-h day-night cycle. In preclinical models of subarachnoid hemorrhage (SAH), cyclic gene expression is disrupted. Stabilization of circadian rhythm gene expression attenuates susceptibility to ischemic damage in both neuronal and myocardial tissues. In this clinical observational study, circadian rhythm gene Period-2 (Per2) mRNA expression levels were determined from blood leukocytes and cerebrospinal fluid (CSF) cells via real-time PCR on days 1, 7 and 14 after aneurysm rupture in 49 patients with spontaneous SAH. CSF Per2 expression was markedly suppressed immediately after SAH and remained suppressed over the course of two weeks of ICU treatment. Short-term mortality as well as occurrence of delirium was associated with greater extent of Per2 suppression on day 1 after SAH. Patients that developed delayed cerebral ischemia exhibited comparatively lower Per2 expression levels on day 7 after SAH, while presence of vasospasm remained unaffected. However, Per2 expression did not differ in patient groups with favourable or non-favourable functional neurological outcome (modified Rankin Scales 1–3 vs. 4–6). While our findings suggest a potential protective effect of stable circadian rhythm gene expression on the extent of ischemic damage, this effect was confined to the early disease course and was not reflected in patients’ functional neurological outcome.
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Affiliation(s)
- Sibylle Frase
- Department of Neurology and Neuroscience, Medical Center—University of Freiburg, 79106 Freiburg, Germany;
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
- Correspondence:
| | - Sandra Kaiser
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
- Department of Anesthesiology and Critical Care, Medical Center—University of Freiburg, 79106 Freiburg, Germany
| | - Matti Steimer
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
- Department of Anesthesiology and Critical Care, Medical Center—University of Freiburg, 79106 Freiburg, Germany
| | - Lisa Selzner
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
- Department of Anesthesiology and Critical Care, Medical Center—University of Freiburg, 79106 Freiburg, Germany
| | - Niels Alexander Foit
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
- Department of Neurosurgery, Medical Center—University of Freiburg, 79106 Freiburg, Germany
| | - Wolf-Dirk Niesen
- Department of Neurology and Neuroscience, Medical Center—University of Freiburg, 79106 Freiburg, Germany;
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
| | - Nils Schallner
- Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (S.K.); (M.S.); (L.S.); (N.A.F.); (N.S.)
- Department of Anesthesiology and Critical Care, Medical Center—University of Freiburg, 79106 Freiburg, Germany
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22
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Age, Sex Hormones, and Circadian Rhythm Regulate the Expression of Amyloid-Beta Scavengers at the Choroid Plexus. Int J Mol Sci 2020; 21:ijms21186813. [PMID: 32957439 PMCID: PMC7554684 DOI: 10.3390/ijms21186813] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/07/2020] [Accepted: 09/13/2020] [Indexed: 01/29/2023] Open
Abstract
Accumulation of amyloid-beta (Aβ) in the brain is thought to derive from the impairment of Aβ clearance mechanisms rather than from its overproduction, which consequently contributes to the development of Alzheimer’s disease. The choroid plexus epithelial cells constitute an important clearance route for Aβ, either by facilitating its transport from the cerebrospinal fluid to the blood, or by synthesizing and secreting various proteins involved in Aβ degradation. Impaired choroid plexus synthesis, secretion, and transport of these Aβ-metabolizing enzymes have been therefore associated with the disruption of Aβ homeostasis and amyloid load. Factors such as aging, female gender, and circadian rhythm disturbances are related to the decline of choroid plexus functions that may be involved in the modulation of Aβ-clearance mechanisms. In this study, we investigated the impact of age, sex hormones, and circadian rhythm on the expression of Aβ scavengers such as apolipoprotein J, gelsolin, and transthyretin at the rat choroid plexus. Our results demonstrated that mRNA expression and both intracellular and secreted protein levels of the studied Aβ scavengers are age-, sex-, and circadian-dependent. These data suggest that the Aβ-degradation and clearance pathways at the choroid plexus, mediated by the presence of Aβ scavengers, might be compromised as a consequence of aging and circadian disturbances. These are important findings that enhance the understanding of Aβ-clearance-regulating mechanisms at the blood–cerebrospinal fluid barrier.
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Travica N, Ried K, Hudson I, Sali A, Scholey A, Pipingas A. The Contribution of Plasma and Brain Vitamin C on Age and Gender-Related Cognitive Differences: A Mini-Review of the Literature. Front Integr Neurosci 2020; 14:47. [PMID: 32973470 PMCID: PMC7471743 DOI: 10.3389/fnint.2020.00047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 07/24/2020] [Indexed: 12/14/2022] Open
Abstract
There is increasing evidence that sex differences in the brain may contribute to gender-related behavioral differences, including cognitive function. Literature has revealed gender dimorphisms in cognitive function between males and females. Additionally, several risk factors associated with cognitive decline depend on chronological age. It is well recognized that the process of aging is associated with a decline in cognitive ability and brain function. Various explanations may account for these gender-related cognitive differences and age-associated cognitive changes. Recent investigations have highlighted the importance of vitamin C in maintaining brain health and its association with cognitive function in both cognitively intact and impaired cohorts. The present review explores previous literature that has evaluated differences in plasma/brain vitamin C between genders and during aging. It then assesses whether these age and gender-related differences may affect the relationship between plasma/brain vitamin C and cognition. The purpose of this review was to examine the evidence for a link between plasma/brain vitamin C and cognition and the impact of gender and age on this relationship. Epidemiological studies have frequently shown higher vitamin C plasma concentrations in women. Similarly, aging has been systematically associated with reductions in plasma vitamin C levels. A range of animal studies has demonstrated potential gender and age-related differences in vitamin C brain distribution and utilization. The reviewed literature suggests that gender differences in plasma and brain vitamin C may potentially contribute to differences in gender-associated cognitive ability, particularly while females are pre-menopausal. Additionally, we can propose that age-associated differences in plasma and brain vitamin C may be potentially linked to age-associated cognitive differences, with older cohorts appearing more vulnerable to experience declines in plasma vitamin C concentrations alongside compromised vitamin C brain regulation. This review encourages future investigations to take into account both gender and age when assessing the link between plasma vitamin C concentrations and cognitive function. Further large scale investigations are required to assess whether differences in cognitive function between genders and age groups may be causally attributed to plasma vitamin C status and brain distribution and utilization.
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Affiliation(s)
- Nikolaj Travica
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
- The National Institute of Integrative Medicine, Melbourne, VIC, Australia
| | - Karin Ried
- The National Institute of Integrative Medicine, Melbourne, VIC, Australia
- Discipline of General Practice, University of Adelaide, Adelaide, SA, Australia
- Torrens University, Melbourne, VIC, Australia
| | - Irene Hudson
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
- School of Science, College of Science, Engineering and Health, Mathematical Sciences, Royal Melbourne Institute of Technology (RMIT), Melbourne, VIC, Australia
- School of Mathematical and Physical Science, University of Newcastle, Callaghan, NSW, Australia
| | - Avni Sali
- The National Institute of Integrative Medicine, Melbourne, VIC, Australia
| | - Andrew Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
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24
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Kratzer I, Ek J, Stolp H. The molecular anatomy and functions of the choroid plexus in healthy and diseased brain. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183430. [PMID: 32750317 DOI: 10.1016/j.bbamem.2020.183430] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 01/16/2023]
Abstract
The choroid plexus (CP) is located in the ventricular system of the brain (one in each ventricle), and the CP epithelial cells form an important barrier between the blood and the cerebrospinal fluid (CSF). Their main function comprises CSF secretion, maintenance of brain homeostasis, signalling, and forming a neuroprotective barrier against harmful external and internal compounds. The CPs mature early and demonstrate expressional changes of barrier-specific genes and proteins related to location and developmental stage of the CP. Important proteins for the barrier function include tight junction proteins, numerous transporters and enzymes. Natural senescence leads to structural changes in the CP cells and reduced or loss of function, while further loss of CP function and changes in immune status may be relevant in neurodegenerative diseases such as Alzheimer's disease and Multiple Sclerosis. Neuroprotective genes expressed at CPs may be unexplored targets for new therapies for neurodegenerative diseases.
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Affiliation(s)
- Ingrid Kratzer
- FLUID Team, Lyon Neurosciences Research Center, INSERM U1028 CNRS UMR 5292, University Claude Bernard Lyon 1, 69008 Lyon, France; Friedensgasse 3, 8010 Graz, Austria.
| | - Joakim Ek
- Department of Physiology, Institute of Neuroscience and Physiology, University of Gothenburg, Medicinaregatan 11, Box 432, 40530 Göteborg, Sweden.
| | - Helen Stolp
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London NW0 1TU, UK.
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25
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Kaiser K, Bryja V. Choroid Plexus: The Orchestrator of Long-Range Signalling Within the CNS. Int J Mol Sci 2020; 21:E4760. [PMID: 32635478 PMCID: PMC7369786 DOI: 10.3390/ijms21134760] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 06/26/2020] [Accepted: 07/02/2020] [Indexed: 01/24/2023] Open
Abstract
Cerebrospinal fluid (CSF) is the liquid that fills the brain ventricles. CSF represents not only a mechanical brain protection but also a rich source of signalling factors modulating diverse processes during brain development and adulthood. The choroid plexus (CP) is a major source of CSF and as such it has recently emerged as an important mediator of extracellular signalling within the brain. Growing interest in the CP revealed its capacity to release a broad variety of bioactive molecules that, via CSF, regulate processes across the whole central nervous system (CNS). Moreover, CP has been also recognized as a sensor, responding to altered composition of CSF associated with changes in the patterns of CNS activity. In this review, we summarize the recent advances in our understanding of the CP as a signalling centre that mediates long-range communication in the CNS. By providing a detailed account of the CP secretory repertoire, we describe how the CP contributes to the regulation of the extracellular environment-in the context of both the embryonal as well as the adult CNS. We highlight the role of the CP as an important regulator of CNS function that acts via CSF-mediated signalling. Further studies of CP-CSF signalling hold the potential to provide key insights into the biology of the CNS, with implications for better understanding and treatment of neuropathological conditions.
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Affiliation(s)
- Karol Kaiser
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Vitezslav Bryja
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
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26
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Characterization of the circadian oscillator in the choroid plexus of rats. Biochem Biophys Res Commun 2020; 524:497-501. [DOI: 10.1016/j.bbrc.2020.01.125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 01/22/2020] [Indexed: 01/01/2023]
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27
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Furtado A, Astaburuaga R, Costa A, Duarte AC, Gonçalves I, Cipolla-Neto J, Lemos MC, Carro E, Relógio A, Santos CRA, Quintela T. The Rhythmicity of Clock Genes is Disrupted in the Choroid Plexus of the APP/PS1 Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2020; 77:795-806. [PMID: 32741824 DOI: 10.3233/jad-200331] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The choroid plexus (CP), which constitutes the blood-cerebrospinal fluid barrier, was recently identified as an important component of the circadian clock system. OBJECTIVE The fact that circadian rhythm disruption is closely associated to Alzheimer's disease (AD) led us to investigate whether AD pathology can contribute to disturbances of the circadian clock in the CP. METHODS For this purpose, we evaluated the expression of core-clock genes at different time points, in 6- and 12-month-old female and male APP/PS1 mouse models of AD. In addition, we also assessed the effect of melatonin pre-treatment in vitro before amyloid-β stimulus in the daily pattern of brain and muscle Arnt-like protein 1 (Bmal1) expression. RESULTS Our results showed a dysregulation of circadian rhythmicity of Bmal1 expression in female and male APP/PS1 transgenic 12-month-old mice and of Period 2 (Per2) expression in male mice. In addition, a significant circadian pattern of Bmal1 was measured the intermittent melatonin pre-treatment group, showing that melatonin can reset the CP circadian clock. CONCLUSION These results demonstrated a connection between AD and the disruption of circadian rhythm in the CP, representing an attractive target for disease prevention and/or treatment.
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Affiliation(s)
- André Furtado
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Rosario Astaburuaga
- Institute for Theoretical Biology (ITB), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, Berlin Institute of Health, Germany
- Medical Department of Hematology, Oncology, and Tumor Immunology and Molekulares Krebsforschungszentrum (MKFZ), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, Berlin Institute of Health, Germany
| | - Ana Costa
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Ana C Duarte
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - José Cipolla-Neto
- Laboratory of Neurobiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Manuel C Lemos
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Eva Carro
- Networked Biomedical Research Center in Neurodegenerative Diseases (CIBERNED), Spain
- Group of Neurodegenerative Diseases, Hospital 12 de Octubre Research Institute (imas12), Madrid, Spain
| | - Angela Relógio
- Institute for Theoretical Biology (ITB), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, Berlin Institute of Health, Germany
- Medical Department of Hematology, Oncology, and Tumor Immunology and Molekulares Krebsforschungszentrum (MKFZ), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, Berlin Institute of Health, Germany
- Department of Human Medicine, Institute for Systems Medicine and Bioinformatics, MSH Medical School Hamburg - University of Applied Sciences and Medical University, Hamburg, Germany
| | - Cecília R A Santos
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Telma Quintela
- CICS-UBI - Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
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28
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Talhada D, Costa-Brito AR, Duarte AC, Costa AR, Quintela T, Tomás J, Gonçalves I, Santos CRA. The choroid plexus: Simple structure, complex functions. J Neurosci Res 2019; 98:751-753. [PMID: 31825126 DOI: 10.1002/jnr.24571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/21/2019] [Accepted: 11/21/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Daniela Talhada
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal.,Laboratory for Experimental Brain Research, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Sweden
| | - Ana Raquel Costa-Brito
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Ana Catarina Duarte
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Ana Raquel Costa
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Telma Quintela
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Joana Tomás
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI-Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
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29
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Pienkowska M, Choufani S, Turinsky AL, Guha T, Merino DM, Novokmet A, Brudno M, Weksberg R, Shlien A, Hawkins C, Bouffet E, Tabori U, Gilbertson R, Finlay JL, Jabado N, Thomas C, Sill M, Capper D, Hasselblatt M, Malkin D. DNA methylation signature is prognostic of choroid plexus tumor aggressiveness. Clin Epigenetics 2019; 11:117. [PMID: 31409384 PMCID: PMC6692938 DOI: 10.1186/s13148-019-0708-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 07/22/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Histological grading of choroid plexus tumors (CPTs) remains the best prognostic tool to distinguish between aggressive choroid plexus carcinoma (CPC) and the more benign choroid plexus papilloma (CPP) or atypical choroid plexus papilloma (aCPP); however, these distinctions can be challenging. Standard treatment of CPC is very aggressive and often leads to severe damage to the young child's brain. Therefore, it is crucial to distinguish between CPC and less aggressive entities (CPP or aCPP) to avoid unnecessary exposure of the young patient to neurotoxic therapy. To better stratify CPTs, we utilized DNA methylation (DNAm) to identify prognostic epigenetic biomarkers for CPCs. METHODS We obtained DNA methylation profiles of 34 CPTs using the HumanMethylation450 BeadChip from Illumina, and the data was analyzed using the Illumina Genome Studio analysis software. Validation of differentially methylated CpG sites chosen as biomarkers was performed using pyrosequencing analysis on additional 22 CPTs. Sensitivity testing of the CPC DNAm signature was performed on a replication cohort of 61 CPT tumors obtained from Neuropathology, University Hospital Münster, Germany. RESULTS Generated genome-wide DNAm profiles of CPTs showed significant differences in DNAm between CPCs and the CPPs or aCPPs. The prediction of clinical outcome could be improved by combining the DNAm profile with the mutational status of TP53. CPCs with homozygous TP53 mutations clustered as a group separate from those carrying a heterozygous TP53 mutation or CPCs with wild type TP53 (TP53-wt) and showed the worst survival outcome. Specific DNAm signatures for CPCs revealed AK1, PER2, and PLSCR4 as potential biomarkers for CPC that can be used to improve molecular stratification for diagnosis and treatment. CONCLUSIONS We demonstrate that combining specific DNAm signature for CPCs with histological approaches better differentiate aggressive tumors from those that are not life threatening. These findings have important implications for future prognostic risk prediction in clinical disease management.
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Affiliation(s)
- Malgorzata Pienkowska
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Sanaa Choufani
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Andrei L. Turinsky
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Center for Computational Medicine, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Tanya Guha
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Diana M. Merino
- Friends of Cancer Research, 1800 M Street, NW, Suite 1050 South, Washington, DC 20036 USA
| | - Ana Novokmet
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Michael Brudno
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Center for Computational Medicine, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Department of Computer Science, University of Toronto, 40 St. George Street, Toronto, Ontario M5S 2E4 Canada
| | - Rosanna Weksberg
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Division of Clinical and Metabolic Genetics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Adam Shlien
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Paediatric Laboratory Medicine, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Cynthia Hawkins
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Paediatric Laboratory Medicine, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Eric Bouffet
- Division of Hematology/Oncology, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Uri Tabori
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Division of Hematology/Oncology, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Richard Gilbertson
- Department of Oncology, Cambridge Cancer Center, Robinson Way, Cambridge, CB2 0RE England
| | - Jonathan L. Finlay
- Neuro-Oncology Program, Nationwide Children’s Hospital and The Ohio State University, 700 Children’s Dr, Columbus, OH 43205 USA
| | - Nada Jabado
- Division of Hematology/Oncology, Montreal Children’s Hospital of the McGill University Health Centre (RI-MUHC), 1001 Decarie Blvd, Montreal, Québec, H4A 3 J1 Canada
| | - Christian Thomas
- Institute of Neuropathology, University Hospital Münster, 48149 Münster, Germany
| | - Martin Sill
- Hopp Children’s Cancer Center at the NCT Heidelberg (KiTZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - David Capper
- Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Neuropathology, Charitéplatz 1, 10117 Berlin, Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, Invalidenstrasse 80, 10117, Berlin, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Martin Hasselblatt
- Institute of Neuropathology, University Hospital Münster, 48149 Münster, Germany
| | - David Malkin
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Division of Hematology/Oncology, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, MaRS Centre, 101 College Street, Toronto, Ontario M5G 1 L7 Canada
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30
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Quintela T, Gonçalves I, Silva M, Duarte AC, Guedes P, Andrade K, Freitas F, Talhada D, Albuquerque T, Tavares S, Passarinha LA, Cipolla-Neto J, Santos CRA. Choroid plexus is an additional source of melatonin in the brain. J Pineal Res 2018; 65:e12528. [PMID: 30260503 DOI: 10.1111/jpi.12528] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/14/2018] [Accepted: 09/18/2018] [Indexed: 01/08/2023]
Abstract
The cerebrospinal fluid melatonin is released from the pineal gland, directly into the third ventricle, or produced de novo in the brain from extrapineal melatonin sources leading to a melatonin concentration gradient in the cerebrospinal fluid. Despite the interest on this topic, the brain areas capable of producing melatonin are not yet clear. Bearing this in mind, we hypothesized that the choroid plexus (CP) could be one of these melatonin sources. We analyzed and confirmed the presence of the four enzymes required for melatonin synthesis in rat CP and demonstrated that arylalkylamine N-acetyltransferase shows a circadian expression in female and male rat CP. Specifically, this enzyme colocalizes with mitochondria in rat CP epithelial cells, an organelle known to be involved in melatonin function and synthesis. Then, we demonstrated that melatonin is synthesized by porcine CP explants, although without a circadian pattern. In conclusion, our data show that the CP is a local source of melatonin to the central nervous system, probably contributing to its high levels in the cerebrospinal fluid. We believe that in the CP, melatonin might be regulated by its endogenous clock machinery and by the hormonal background.
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Affiliation(s)
- Telma Quintela
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Marco Silva
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Ana C Duarte
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Paula Guedes
- CENSE, DCEA, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Késsia Andrade
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Flávia Freitas
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Daniela Talhada
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Tânia Albuquerque
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Sara Tavares
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Luis A Passarinha
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
- UCIBIO-Requimte, Department of Chemistry, Faculty of Sciences and Technology, Universidade Nova de Lisboa, Caparica, Portugal
| | - José Cipolla-Neto
- Laboratory of Neurobiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Cecília R A Santos
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
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31
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Abstract
Mammalian circadian clocks have a hierarchical organization, governed by the suprachiasmatic nucleus (SCN) in the hypothalamus. The brain itself contains multiple loci that maintain autonomous circadian rhythmicity, but the contribution of the non-SCN clocks to this hierarchy remains unclear. We examine circadian oscillations of clock gene expression in various brain loci and discovered that in mouse, robust, higher amplitude, relatively faster oscillations occur in the choroid plexus (CP) compared to the SCN. Our computational analysis and modeling show that the CP achieves these properties by synchronization of “twist” circadian oscillators via gap-junctional connections. Using an in vitro tissue coculture model and in vivo targeted deletion of the Bmal1 gene to silence the CP circadian clock, we demonstrate that the CP clock adjusts the SCN clock likely via circulation of cerebrospinal fluid, thus finely tuning behavioral circadian rhythms. The suprachiasmatic nucleus (SCN) has been thought of as the master circadian clock, but peripheral circadian clocks do exist. Here, the authors show that the choroid plexus displays oscillations more robust than the SCN and that can be described as a Poincaré oscillator with negative twist.
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Ghersi-Egea JF, Strazielle N, Catala M, Silva-Vargas V, Doetsch F, Engelhardt B. Molecular anatomy and functions of the choroidal blood-cerebrospinal fluid barrier in health and disease. Acta Neuropathol 2018; 135:337-361. [PMID: 29368213 DOI: 10.1007/s00401-018-1807-1] [Citation(s) in RCA: 237] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/07/2018] [Accepted: 01/13/2018] [Indexed: 02/07/2023]
Abstract
The barrier between the blood and the ventricular cerebrospinal fluid (CSF) is located at the choroid plexuses. At the interface between two circulating fluids, these richly vascularized veil-like structures display a peculiar morphology explained by their developmental origin, and fulfill several functions essential for CNS homeostasis. They form a neuroprotective barrier preventing the accumulation of noxious compounds into the CSF and brain, and secrete CSF, which participates in the maintenance of a stable CNS internal environment. The CSF circulation plays an important role in volume transmission within the developing and adult brain, and CSF compartments are key to the immune surveillance of the CNS. In these contexts, the choroid plexuses are an important source of biologically active molecules involved in brain development, stem cell proliferation and differentiation, and brain repair. By sensing both physiological changes in brain homeostasis and peripheral or central insults such as inflammation, they also act as sentinels for the CNS. Finally, their role in the control of immune cell traffic between the blood and the CSF confers on the choroid plexuses a function in neuroimmune regulation and implicates them in neuroinflammation. The choroid plexuses, therefore, deserve more attention while investigating the pathophysiology of CNS diseases and related comorbidities.
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Affiliation(s)
- Jean-François Ghersi-Egea
- Fluid Team, Lyon Neurosciences Research Center, INSERM U1028, CNRS, UMR5292, University Lyon-1, Lyon, France.
| | - Nathalie Strazielle
- Fluid Team, Lyon Neurosciences Research Center, INSERM U1028, CNRS, UMR5292, University Lyon-1, Lyon, France
- Brain-i, Lyon, France
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Quintela T, Albuquerque T, Lundkvist G, Carmine Belin A, Talhada D, Gonçalves I, Carro E, Santos CR. The choroid plexus harbors a circadian oscillator modulated by estrogens. Chronobiol Int 2017; 35:270-279. [DOI: 10.1080/07420528.2017.1400978] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Telma Quintela
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Tânia Albuquerque
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | | | | | - Daniela Talhada
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Eva Carro
- Group of Neurodegenerative Diseases, Instituto de Investigacion Hospital 12 de Octubre (i+12), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, CIBERNED, Madrid, Spain
| | - Cecília R.A. Santos
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
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The effect of melatonin from slow-release implants on basic and TLR-4-mediated gene expression of inflammatory cytokines and their receptors in the choroid plexus in ewes. Res Vet Sci 2017; 113:50-55. [PMID: 28889016 DOI: 10.1016/j.rvsc.2017.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/06/2017] [Accepted: 09/03/2017] [Indexed: 12/18/2022]
Abstract
The present study concerns the effect of melatonin from slow-release implants on the expression of genes coding interleukin-1β (Il1B), inerleukin-6 (Il6), tumour necrosis factor α (Tnf) and their receptors: IL-1 receptor type I (Il1r1) and type II (Il1r2), IL-6 receptor (Il6r) and signal transducer (Il6st), TNFα receptor type I (Tnfrsf1a) and II (Tnfrsf1b) and retinoid-related orphan receptor α (RorA) and Rev.-erbα in the ovine choroid plexus (CP) under basal and lipopolysaccharide (LPS)-challenged conditions. Studies were performed on four groups: 1) sham-implanted and placebo-treated, 2) melatonin-implanted (Melovine, 18mg) and placebo-treated, 3) sham-implanted and LPS-treated (400ng/kg of body weight) and 4) melatonin-implanted and LPS-treated. Under basal conditions, we observed weak expression of Tnf, low expression of Il1B, Il6 and Il1r2 and intermediate expression of other cytokines receptors. LPS treatment induced (P≤0.05) expression in all cytokines and their receptors, except Il6r 3h after the administration. Melatonin attenuated (P≤0.05) LPS-induced up-regulation of Il6 but had no effect on other cytokines and their receptors and up-regulated (P≤0.05) Rev.-erbα expression under basal conditions. This indicates that melatonin from slow-release implants suppresses TLR4-mediated Il6 expression in the ovine CP via a mechanism likely involving clock genes.
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The choroid plexus as a sex hormone target: Functional implications. Front Neuroendocrinol 2017; 44:103-121. [PMID: 27998697 DOI: 10.1016/j.yfrne.2016.12.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/25/2016] [Accepted: 12/12/2016] [Indexed: 12/21/2022]
Abstract
The choroid plexuses (CPs) are highly vascularized branched structures that protrude into the ventricles of the brain, and form a unique interface between the blood and the cerebrospinal fluid (CSF). In recent years, novel functions have been attributed to this tissue such as in immune and chemical surveillance of the central nervous system, brain development, adult neurogenesis and circadian rhythm regulation. Sex hormones (SH) are widely recognized as modulators in several neurodegenerative diseases, and there is evidence that estrogens and androgens regulate several fundamental biological functions in the CPs. Therefore, SH are likely to affect the composition of the CSF impacting on brain homeostasis. This review will look at implications of the CPs' sex-related specificities.
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Mathew RS, Mullan H, Blusztajn JK, Lehtinen MK. Comment on "Multiple repressive mechanisms in the hippocampus during memory formation". Science 2016; 353:453. [PMID: 27482552 PMCID: PMC5026305 DOI: 10.1126/science.aaf1288] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cho et al. (Reports, 2 October 2015, p. 82) report that gene repression after contextual fear conditioning regulates hippocampal memory formation. We observe low levels of expression for many of the top candidate genes in the hippocampus and robust expression in the choroid plexus, as well as repression at 4 hours after contextual fear conditioning, suggesting the inclusion of choroid plexus messenger RNAs in Cho et al. hippocampal samples.
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Affiliation(s)
- Rebecca S. Mathew
- Department of Cell Biology, and Howard Hughes Medical
Institute, Harvard Medical School, Boston, Massachusetts, 02115, USA
| | - Hillary Mullan
- Department of Pathology, Boston Children’s
Hospital, Boston, Massachusetts, 02115, USA
| | - Jan Krzysztof Blusztajn
- Department of Pathology and Laboratory Medicine, Boston
University School of Medicine, Boston, Massachusetts, 02118, USA
| | - Maria K. Lehtinen
- Department of Pathology, Boston Children’s
Hospital, Boston, Massachusetts, 02115, USA
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Quintela T, Marcelino H, Deery MJ, Feret R, Howard J, Lilley KS, Albuquerque T, Gonçalves I, Duarte AC, Santos CRA. Sex-Related Differences in Rat Choroid Plexus and Cerebrospinal Fluid: A cDNA Microarray and Proteomic Analysis. J Neuroendocrinol 2016; 28. [PMID: 26606900 DOI: 10.1111/jne.12340] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 11/13/2015] [Accepted: 11/19/2015] [Indexed: 01/09/2023]
Abstract
The choroid plexus (CP) epithelium is a unique structure in the brain that forms an interface between the peripheral blood and the cerebrospinal fluid (CSF), which is mostly produced by the CP itself. Because the CP transcriptome is regulated by the sex hormone background, the present study compared gene/protein expression profiles in the CP and CSF from male and female rats aiming to better understand sex-related differences in CP functions and brain physiology. We used data previously obtained by cDNA microarrays to compare the CP transcriptome between male and female rats, and complemented these data with the proteomic analysis of the CSF of castrated and sham-operated males and females. Microarray analysis showed that 17 128 and 17 002 genes are expressed in the male and female CP, which allowed the functional annotation of 141 and 134 pathways, respectively. Among the most expressed genes, canonical pathways associated with mitochondrial dysfunctions and oxidative phosphorylation were the most prominent, whereas the most relevant molecular and cellular functions annotated were protein synthesis, cellular growth and proliferation, cell death and survival, molecular transport, and protein trafficking. No significant differences were found between males and females regarding these pathways. Seminal functions of the CP differentially regulated between sexes were circadian rhythm signalling, as well as several canonical pathways related to stem cell differentiation, metabolism and the barrier function of the CP. The proteomic analysis identified five down-regulated proteins in the CSF samples from male rats compared to females and seven proteins exhibiting marked variation in the CSF of gonadectomised males compared to sham animals, whereas no differences were found between sham and ovariectomised females. These data clearly show sex-related differences in CP gene expression and CSF protein composition that may impact upon neurological diseases.
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Affiliation(s)
- T Quintela
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - H Marcelino
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - M J Deery
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - R Feret
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - J Howard
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - K S Lilley
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - T Albuquerque
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - I Gonçalves
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - A C Duarte
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - C R A Santos
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
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