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Yokoi Y, Kubo A, Nishimura K, Takamura Y, Morishita Y, Minami M, Nomura H. Chemogenetic activation of histamine neurons promotes retrieval of apparently lost memories. Mol Brain 2024; 17:38. [PMID: 38877480 PMCID: PMC11179205 DOI: 10.1186/s13041-024-01111-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 06/08/2024] [Indexed: 06/16/2024] Open
Abstract
Memory retrieval can become difficult over time, but it is important to note that memories that appear to be forgotten might still be stored in the brain, as shown by their occasional spontaneous retrieval. Histamine in the central nervous system is a promising target for facilitating the recovery of memory retrieval. Our previous study demonstrated that histamine H3 receptor (H3R) inverse agonists/antagonists, activating histamine synthesis and release, enhance activity in the perirhinal cortex and help in retrieving forgotten long-term object recognition memories. However, it is unclear whether enhancing histaminergic activity alone is enough for the recovery of memory retrieval, considering that H3Rs are also located in other neuron types and affect the release of multiple neurotransmitters. In this study, we employed a chemogenetic method to determine whether specifically activating histamine neurons in the tuberomammillary nucleus facilitates memory retrieval. In the novel object recognition test, control mice did not show a preference for objects based on memory 1 week after training, but chemogenetic activation of histamine neurons before testing improved memory retrieval. This selective activation did not affect the locomotor activity or anxiety-related behavior. Administering an H2R antagonist directly into the perirhinal cortex inhibited the recovery of memory retrieval induced by the activation of histamine neurons. Furthermore, we utilized the Barnes maze test to investigate whether chemogenetic activation of histamine neurons influences the retrieval of forgotten spatial memories. Control mice explored all the holes in the maze equally 1 week after training, whereas mice with chemogenetically activated histamine neurons spent more time around the target hole. These findings indicate that chemogenetic activation of histamine neurons in the tuberomammillary nucleus can promote retrieval of seemingly forgotten object recognition and spatial memories.
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Affiliation(s)
- Yuto Yokoi
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan
| | - Ayame Kubo
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Kyoka Nishimura
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Yuki Takamura
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan
| | - Yoshikazu Morishita
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan
| | - Masabumi Minami
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Hiroshi Nomura
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan.
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan.
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Theoharides TC, Twahir A, Kempuraj D. Mast cells in the autonomic nervous system and potential role in disorders with dysautonomia and neuroinflammation. Ann Allergy Asthma Immunol 2024; 132:440-454. [PMID: 37951572 DOI: 10.1016/j.anai.2023.10.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/16/2023] [Accepted: 10/06/2023] [Indexed: 11/14/2023]
Abstract
Mast cells (MC) are ubiquitous in the body, and they are critical for not only in allergic diseases but also in immunity and inflammation, including having potential involvement in the pathophysiology of dysautonomias and neuroinflammatory disorders. MC are located perivascularly close to nerve endings and sites such as the carotid bodies, heart, hypothalamus, the pineal gland, and the adrenal gland that would allow them not only to regulate but also to be affected by the autonomic nervous system (ANS). MC are stimulated not only by allergens but also many other triggers including some from the ANS that can affect MC release of neurosensitizing, proinflammatory, and vasoactive mediators. Hence, MC may be able to regulate homeostatic functions that seem to be dysfunctional in many conditions, such as postural orthostatic tachycardia syndrome, autism spectrum disorder, myalgic encephalomyelitis/chronic fatigue syndrome, and Long-COVID syndrome. The evidence indicates that there is a possible association between these conditions and diseases associated with MC activation. There is no effective treatment for any form of these conditions other than minimizing symptoms. Given the many ways MC could be activated and the numerous mediators released, it would be important to develop ways to inhibit stimulation of MC and the release of ANS-relevant mediators.
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Affiliation(s)
- Theoharis C Theoharides
- Institute for Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Ft. Lauderdale, Florida; Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts.
| | - Assma Twahir
- Institute for Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Ft. Lauderdale, Florida
| | - Duraisamy Kempuraj
- Institute for Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Ft. Lauderdale, Florida
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Hernández-Rodríguez M, Mera Jiménez E, Nicolás-Vázquez MI, Miranda-Ruvalcaba R. Dihydroergotamine Increases Histamine Brain Levels and Improves Memory in a Scopolamine-Induced Amnesia Model. Int J Mol Sci 2024; 25:3710. [PMID: 38612521 PMCID: PMC11012231 DOI: 10.3390/ijms25073710] [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: 02/15/2024] [Revised: 03/18/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
The beneficial effects of increasing histamine levels on memory have acquired special interest due to their applicability to psychiatric conditions that cause memory impairments. In addition, by employing drug repurposing approaches, it was demonstrated that dihydroergotamine (DHE), an FDA drug approved to treat migraines, inhibits Histamine N Methyl Transferase (HNMT), the enzyme responsible for the inactivation of histamine in the brain. For this reason, in the present work, the effect of DHE on histamine levels in the hippocampus and its effects on memory was evaluated, employing the scopolamine-induced amnesia model, the Novel Object Recognition (NOR) paradigm, and the Morris Water Maze (MWM). Furthermore, the role of histamine 1 receptor (H1R) and histamine 2 receptor (H2R) antagonists in the improvement in memory produced by DHE in the scopolamine-induced amnesia model was evaluated. Results showed that the rats that received DHE (10 mg/kg, i.p.) showed increased histamine levels in the hippocampus after 1 h of administration but not after 5 h. In behavioral assays, it was shown that DHE (1 mg/kg, i.p.) administered 20 min before the training reversed the memory impairment produced by the administration of scopolamine (2 mg/kg, i.p.) immediately after the training in the NOR paradigm and MWM. Additionally, the effects in memory produced by DHE were blocked by pre-treatment with pyrilamine (20 mg/kg, i.p.) administered 30 min before the training in the NOR paradigm and MWM. These findings allow us to demonstrate that DHE improves memory in a scopolamine-induced amnesia model through increasing histamine levels at the hippocampus due to its activity as an HNMT inhibitor.
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Affiliation(s)
- Maricarmen Hernández-Rodríguez
- Laboratorio de Cultivo Celular, Neurofarmacología y Conducta, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Ciudad de México 11340, Mexico
| | - Elvia Mera Jiménez
- Laboratorio de Cultivo Celular, Neurofarmacología y Conducta, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Ciudad de México 11340, Mexico
| | - María Inés Nicolás-Vázquez
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán Campo 1, Universidad Nacional Autónoma de México, Avenida 1o de Mayo s/n, Colonia Santa María las Torres, Cuautitlán Izcalli 54740, Mexico; (M.I.N.-V.); (R.M.-R.)
| | - Rene Miranda-Ruvalcaba
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán Campo 1, Universidad Nacional Autónoma de México, Avenida 1o de Mayo s/n, Colonia Santa María las Torres, Cuautitlán Izcalli 54740, Mexico; (M.I.N.-V.); (R.M.-R.)
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Song L, Wang J, Zhang Y, Yan X, He J, Nie J, Zhang F, Han R, Yin H, Li J, Liu H, Huang L, Li Y. Association Between Human Metabolomics and Rheumatoid Arthritis: A Systematic Review and Meta-analysis. Arch Med Res 2024; 55:102907. [PMID: 38029644 DOI: 10.1016/j.arcmed.2023.102907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/23/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVE The underdiagnosis and inadequate treatment of rheumatoid arthritis (RA) can be attributed to the various clinical manifestations presented by patients. To address this concern, we conducted an extensive review and meta-analysis, focusing on RA-related metabolites. METHODS A comprehensive literature search was conducted in PubMed, the Cochrane Library, Web of Science, and Embase to identify relevant studies published up to October 5, 2022. The quality of the included articles was evaluated and, subsequently, a meta-analysis was conducted using Review Manager software to analyze the association between metabolites and RA. RESULTS Forty nine studies met the inclusion criteria for the systematic review, and six of these studies were meta-analyzed to evaluate the association between 28 reproducible metabolites and RA. The results indicated that, compared to controls, the levels of histidine (RoM = 0.83, 95% CI = 0.79-0.88, I2 = 0%), asparagine (RoM = 0.83, 95% CI = 0.75-0.91, I2 = 0%), methionine (RoM = 0.82, 95% CI = 0.69-0.98, I2 = 85%), and glycine (RoM = 0.81, 95% CI = 0.67-0.97, I2 = 68%) were significantly lower in RA patients, while hypoxanthine levels (RoM = 1.14, 95% CI = 1.09-1.19, I2 = 0%) were significantly higher. CONCLUSION This study identified histidine, methionine, asparagine, hypoxanthine, and glycine as significantly correlated with RA, thus offering the potential for the advancement of biomarker discovery and the elucidation of disease mechanisms in RA.
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Affiliation(s)
- Lili Song
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Jiayi Wang
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Yue Zhang
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Xingxu Yan
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Junjie He
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Jiaxuan Nie
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Fangfang Zhang
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Rui Han
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Hongqing Yin
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Jingfang Li
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Huimin Liu
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Liping Huang
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China
| | - Yubo Li
- Tianjin University of Traditional Chinese Medicine, No.10, Poyang Lake Road, West zone, Tuanbo New-City, Jinghai-District, Tianjin, China.
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Sagües‐Sesé E, García‐Casares N, Álvarez‐Twose I. Cognitive, neuropsychiatric and neurological alterations in mastocytosis: A systematic review. Clin Transl Allergy 2023; 13:e12319. [PMID: 38146805 PMCID: PMC10718195 DOI: 10.1002/clt2.12319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 12/27/2023] Open
Abstract
BACKGROUND Mastocytosis manifests with multisystemic symptoms, often involving the nervous system. Numerous cognitive, neuropsychiatric and neurological alterations have been reported in multiple observational studies. METHODS We performed a qualitative systematic literature review of reported data consulting the electronic databases Medline, Scopus, Web of Science, Cochrane, and BASE until June 2023. RESULTS We selected 24 studies in which the majority showed that a high proportion of mastocytosis patients suffer cognitive, neuropsychiatric and neurological alterations. The most common disorders and estimated ranges of frequency observed in adults were depression (68%-75%), anxiety, high stress or irritability (27%-54%), cognitive impairment (27%-39%, primarily affecting memory skills), and headaches (55%-69%). Attention challenges and learning difficulties were reported in children at a rate of 13%, while neurodevelopmental disorders occurred at rates of 8%-12%. Frequent white abnormalities in mastocytosis patients with concomitant psychocognitive symptoms have been reported although neuroimaging studies have been performed rarely in this population. CONCLUSION Further studies with more comprehensive and homogeneous evaluations and neuroimaging and histological analysis should be performed for a better understanding of these manifestations. An earlier detection and proper management of these symptoms could greatly improve the quality of life of these patients.
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Affiliation(s)
- Elena Sagües‐Sesé
- Departamento de Medicina, Facultad de MedicinaUniversidad de MálagaMálagaSpain
| | - Natalia García‐Casares
- Departamento de Medicina, Facultad de MedicinaUniversidad de MálagaMálagaSpain
- Centro de Investigaciones Médico‐Sanitarias (CIMES), Fundación General de la Universidad de Málaga, Universidad de MálagaMálagaSpain
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA Plataforma BIONAND)MálagaSpain
| | - Ivan Álvarez‐Twose
- Instituto de Estudios de Mastocitosis de Castilla‐La Mancha (CLMast)Reference Center for Mastocytosis and CIBERONCToledoSpain
- Spanish Network on Mastocytosis (REMA)Toledo and SalamancaSpain
- Instituto de Investigación Sanitaria de Castilla‐La Mancha (IDISCAM)ToledoSpain
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Theoharides TC, Kempuraj D. Role of SARS-CoV-2 Spike-Protein-Induced Activation of Microglia and Mast Cells in the Pathogenesis of Neuro-COVID. Cells 2023; 12:688. [PMID: 36899824 PMCID: PMC10001285 DOI: 10.3390/cells12050688] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/07/2023] [Accepted: 02/16/2023] [Indexed: 02/24/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes coronavirus disease 2019 (COVID-19). About 45% of COVID-19 patients experience several symptoms a few months after the initial infection and develop post-acute sequelae of SARS-CoV-2 (PASC), referred to as "Long-COVID," characterized by persistent physical and mental fatigue. However, the exact pathogenetic mechanisms affecting the brain are still not well-understood. There is increasing evidence of neurovascular inflammation in the brain. However, the precise role of the neuroinflammatory response that contributes to the disease severity of COVID-19 and long COVID pathogenesis is not clearly understood. Here, we review the reports that the SARS-CoV-2 spike protein can cause blood-brain barrier (BBB) dysfunction and damage neurons either directly, or via activation of brain mast cells and microglia and the release of various neuroinflammatory molecules. Moreover, we provide recent evidence that the novel flavanol eriodictyol is particularly suited for development as an effective treatment alone or together with oleuropein and sulforaphane (ViralProtek®), all of which have potent anti-viral and anti-inflammatory actions.
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Affiliation(s)
- Theoharis C. Theoharides
- Institute for Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
- Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Duraisamy Kempuraj
- Institute for Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
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Hirano K, Morishita Y, Minami M, Nomura H. The impact of pitolisant, an H 3 receptor antagonist/inverse agonist, on perirhinal cortex activity in individual neuron and neuronal population levels. Sci Rep 2022; 12:7015. [PMID: 35551460 PMCID: PMC9098477 DOI: 10.1038/s41598-022-11032-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/18/2022] [Indexed: 11/09/2022] Open
Abstract
Histamine is a neurotransmitter that modulates neuronal activity and regulates various brain functions. Histamine H3 receptor (H3R) antagonists/inverse agonists enhance its release in most brain regions, including the cerebral cortex, which improves learning and memory and exerts an antiepileptic effect. However, the mechanism underlying the effect of H3R antagonists/inverse agonists on cortical neuronal activity in vivo remains unclear. Here, we show the mechanism by which pitolisant, an H3R antagonist/inverse agonist, influenced perirhinal cortex (PRh) activity in individual neuron and neuronal population levels. We monitored neuronal activity in the PRh of freely moving mice using in vivo Ca2+ imaging through a miniaturized one-photon microscope. Pitolisant increased the activity of some PRh neurons while decreasing the activity of others without affecting the mean neuronal activity across neurons. Moreover, it increases neuron pairs with synchronous activity in excitatory-responsive neuronal populations. Furthermore, machine learning analysis revealed that pitolisant altered the neuronal population activity. The changes in the population activity were dependent on the neurons that were excited and inhibited by pitolisant treatment. These findings indicate that pitolisant influences the activity of a subset of PRh neurons by increasing the synchronous activity and modifying the population activity.
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Affiliation(s)
- Kyosuke Hirano
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.,Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Yoshikazu Morishita
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Masabumi Minami
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Hiroshi Nomura
- Endowed Department of Cognitive Function and Pathology, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan. .,Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan.
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