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Lyu C, Lyu X, Gong Q, Gao B, Wang Y. Neural activation signatures in individuals with subclinical depression: A task-fMRI meta-analysis. J Affect Disord 2024; 362:104-113. [PMID: 38909758 DOI: 10.1016/j.jad.2024.06.040] [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: 11/04/2023] [Revised: 04/30/2024] [Accepted: 06/14/2024] [Indexed: 06/25/2024]
Abstract
BACKGROUND Previous task-related functional magnetic resonance imaging (task-fMRI) investigations have documented abnormal brain activation associated with subclinical depression (SD), defined as a clinically relevant level of depressive symptoms that does not meet the diagnostic criteria for major depressive disorder. However, these task-fMRI studies have not reported consistent conclusions. Performing a voxel-based meta-analysis of task-fMRI studies may yield reliable findings. METHODS We extracted the peak coordinates and t values of included studies and analyzed brain activation between individuals with SD and healthy controls (HCs) using anisotropic effect-size signed differential mapping (AES-SDM). RESULTS A systematic literature search identified eight studies, including 266 individuals with SD and 281 HCs (aged 14 to 25). The meta-analysis showed that individuals with SD exhibited significantly greater activation in the right lenticular nucleus and putamen according to task-fMRI. The meta-regression analysis revealed a negative correlation between the proportion of females in a group and activation in the right striatum. LIMITATIONS The recruitment criteria for individuals with SD, type of tasks and MRI acquisition parameters of included studies were heterogeneous. The results should be interpreted cautiously due to insufficient included studies. CONCLUSION Our findings suggest that individuals with SD exhibit increased activation in the right lenticular nucleus, putamen and striatum, which may indicate a compensatory increase in response to an impairment of insular and striatal function caused by depression. These results provide valuable insights into the potential pathophysiology of brain dysfunction in SD.
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Affiliation(s)
- Cui Lyu
- Department of Psychiatry, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xinyue Lyu
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Qiyong Gong
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China; Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Bo Gao
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China; Key Laboratory of Brain Imaging, Guizhou Medical University, Guiyang, China.
| | - Yiming Wang
- Department of Psychiatry, Affiliated Hospital of Guizhou Medical University, Guiyang, China.
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Tholin L, Rumeau C, Jankowski R, Gallet P, Wen Hsieh J, Nguyen DT. Experience of French patients with olfactory disorders. Eur Ann Otorhinolaryngol Head Neck Dis 2024; 141:139-145. [PMID: 38431458 DOI: 10.1016/j.anorl.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
OBJECTIVES To assess the experience of subjects with olfactory disorders in their daily life and medical management, and their expectations and proposals for improvement. MATERIAL AND METHODS A cross-sectional observational study was conducted over the period January 2020 to December 2021, with 300 subjects with olfactory disorders: 222 female, 78 male; mean age 46±15 years. In total, 126 were patients consulting in ENT, and 174 were members of the Anosmie.org patients' association. Participants filled out a questionnaire; free texts were analyzed thematically and coded for various qualitative variables. RESULTS Olfactory disorders considerably impacted health, safety and quality of life. Non-COVID-19 acute etiologies (non-COVID-19 viral infection, cranial trauma) showed particularly high risk of psychological, social, safety-related and nutritional consequences. Almost all patients (94%) were dissatisfied with their medical management: 28% had received little explanation, and 23% felt their dysosmia was completely neglected, with no exploration and no etiology suggested. Patients wished above all to have follow-up and accompaniment. CONCLUSION Despite significant impact on health and quality of life, olfactory disorders are neglected by the medical community. Patients should be given an ENT assessment with olfactometry, to establish diagnosis and prognosis. Global multidisciplinary management is necessary, including therapeutic education, and psychological, social and nutritional follow-up.
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Affiliation(s)
- L Tholin
- Service d'ORL et chirurgie cervico-faciale, CHRU de Nancy, université de Lorraine, hôpitaux de Brabois, Nancy, France.
| | - C Rumeau
- Service d'ORL et chirurgie cervico-faciale, CHRU de Nancy, université de Lorraine, hôpitaux de Brabois, Nancy, France
| | - R Jankowski
- Service d'ORL et chirurgie cervico-faciale, CHRU de Nancy, université de Lorraine, hôpitaux de Brabois, Nancy, France
| | - P Gallet
- Service d'ORL et chirurgie cervico-faciale, CHRU de Nancy, université de Lorraine, hôpitaux de Brabois, Nancy, France
| | - J Wen Hsieh
- Unité de rhinologie-olfactologie, service d'oto-rhino-laryngologie et chirurgie cervico-faciale, département des neurosciences cliniques, HUG, Geneva, Switzerland
| | - D T Nguyen
- Service d'ORL et chirurgie cervico-faciale, CHRU de Nancy, université de Lorraine, hôpitaux de Brabois, Nancy, France
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3
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Goodkey K, Wischmeijer A, Perrin L, Watson AES, Qureshi L, Cordelli DM, Toni F, Gnazzo M, Benedicenti F, Elmaleh-Bergès M, Low KJ, Voronova A. Olfactory bulb anomalies in KBG syndrome mouse model and patients. BMC Med 2024; 22:158. [PMID: 38616269 PMCID: PMC11017579 DOI: 10.1186/s12916-024-03363-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 03/18/2024] [Indexed: 04/16/2024] Open
Abstract
ANKRD11 (ankyrin repeat domain 11) is a chromatin regulator and the only gene associated with KBG syndrome, a rare neurodevelopmental disorder. We have previously shown that Ankrd11 regulates murine embryonic cortical neurogenesis. Here, we show a novel olfactory bulb phenotype in a KBG syndrome mouse model and two diagnosed patients. Conditional knockout of Ankrd11 in murine embryonic neural stem cells leads to aberrant postnatal olfactory bulb development and reduced size due to reduction of the olfactory bulb granule cell layer. We further show that the rostral migratory stream has incomplete migration of neuroblasts, reduced cell proliferation as well as aberrant differentiation of neurons. This leads to reduced neuroblasts and neurons in the olfactory bulb granule cell layer. In vitro, Ankrd11-deficient neural stem cells from the postnatal subventricular zone display reduced migration, proliferation, and neurogenesis. Finally, we describe two clinically and molecularly confirmed KBG syndrome patients with anosmia and olfactory bulb and groove hypo-dysgenesis/agenesis. Our report provides evidence that Ankrd11 is a novel regulator of olfactory bulb development and neuroblast migration. Moreover, our study highlights a novel clinical sign of KBG syndrome linked to ANKRD11 perturbations in mice and humans.
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Affiliation(s)
- Kara Goodkey
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
- Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, Edmonton, AB, T6G 1C9, Canada
| | - Anita Wischmeijer
- Clinical Genetics Service and Coordination Center for Rare Diseases, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano, Italy
| | | | - Adrianne E S Watson
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
- Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, Edmonton, AB, T6G 1C9, Canada
| | - Leenah Qureshi
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Duccio Maria Cordelli
- IRCCS Istituto Delle Scienze Neurologiche Di Bologna, UOC Neuropsichiatria Dell'età Pediatrica, Bologna, Italy
| | - Francesco Toni
- IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Programma Di Neuroradiologia Con Tecniche Ad Elevata Complessità (PNTEC), Bologna, Italy
| | - Maria Gnazzo
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, 00165, Rome, Italy
| | - Francesco Benedicenti
- Clinical Genetics Service and Coordination Center for Rare Diseases, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano, Italy
| | | | - Karen J Low
- Department of Academic Child Health, Bristol Medical School, Population Health Sciences, University of Bristol, Bristol, UK
- Clinical Genetics Service, St. Michaels Hospital, Bristol, UK
| | - Anastassia Voronova
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada.
- Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, Edmonton, AB, T6G 1C9, Canada.
- Department of Cell Biology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada.
- Faculty of Medicine & Dentistry, Neuroscience and Mental Health Institute, Edmonton, AB, T6G 2E1, Canada.
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Eszlari N, Hullam G, Gal Z, Torok D, Nagy T, Millinghoffer A, Baksa D, Gonda X, Antal P, Bagdy G, Juhasz G. Olfactory genes affect major depression in highly educated, emotionally stable, lean women: a bridge between animal models and precision medicine. Transl Psychiatry 2024; 14:182. [PMID: 38589364 PMCID: PMC11002013 DOI: 10.1038/s41398-024-02867-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 04/10/2024] Open
Abstract
Most current approaches to establish subgroups of depressed patients for precision medicine aim to rely on biomarkers that require highly specialized assessment. Our present aim was to stratify participants of the UK Biobank cohort based on three readily measurable common independent risk factors, and to investigate depression genomics in each group to discover common and separate biological etiology. Two-step cluster analysis was run separately in males (n = 149,879) and females (n = 174,572), with neuroticism (a tendency to experience negative emotions), body fat percentage, and years spent in education as input variables. Genome-wide association analyses were implemented within each of the resulting clusters, for the lifetime occurrence of either a depressive episode or recurrent depressive disorder as the outcome. Variant-based, gene-based, gene set-based, and tissue-specific gene expression test were applied. Phenotypically distinct clusters with high genetic intercorrelations in depression genomics were found. A two-cluster solution was the best model in each sex with some differences including the less important role of neuroticism in males. In females, in case of a protective pattern of low neuroticism, low body fat percentage, and high level of education, depression was associated with pathways related to olfactory function. While also in females but in a risk pattern of high neuroticism, high body fat percentage, and less years spent in education, depression showed association with complement system genes. Our results, on one hand, indicate that alteration of olfactory pathways, that can be paralleled to the well-known rodent depression models of olfactory bulbectomy, might be a novel target towards precision psychiatry in females with less other risk factors for depression. On the other hand, our results in multi-risk females may provide a special case of immunometabolic depression.
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Grants
- This study was supported by the Hungarian National Research, Development, and Innovation Office, with grants K 143391 and PD 146014, as well as 2019-2.1.7-ERA-NET-2020-00005 under the frame of ERA PerMed (ERAPERMED2019-108); by the Hungarian Brain Research Program (grant: 2017-1.2.1-NKP-2017-00002) and the Hungarian Brain Research Program 3.0 (NAP2022-I-4/2022); and by TKP2021-EGA-25, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-EGA funding scheme. N. E. was supported by the ÚNKP-22-4-II-SE-1, and D. B. by the ÚNKP-22-4-I-SE-10 New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research, Development and Innovation Fund. N. E. is supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences.
- This study was supported by the Hungarian National Research, Development, and Innovation Office, with grants K 143391, as well as 2019-2.1.7-ERA-NET-2020-00005 under the frame of ERA PerMed (ERAPERMED2019-108); by the Hungarian Brain Research Program (grant: 2017-1.2.1-NKP-2017-00002) and the Hungarian Brain Research Program 3.0 (NAP2022-I-4/2022); and by TKP2021-EGA-25, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-EGA funding scheme.
- This study was supported by the Hungarian National Research, Development, and Innovation Office, with grants K 143391, as well as 2019-2.1.7-ERA-NET-2020-00005 under the frame of ERA PerMed (ERAPERMED2019-108); by the Hungarian Brain Research Program (grant: 2017-1.2.1-NKP-2017-00002) and the Hungarian Brain Research Program 3.0 (NAP2022-I-4/2022); and by TKP2021-EGA-25, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-EGA funding scheme. N. E. was supported by the ÚNKP-22-4-II-SE-1, and D. B. by the ÚNKP-23-4-II-SE-2 New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research, Development and Innovation Fund.
- This study was supported by the Hungarian National Research, Development, and Innovation Office, with grants K 139330, K 143391, and PD 146014, as well as 2019-2.1.7-ERA-NET-2020-00005 under the frame of ERA PerMed (ERAPERMED2019-108); by the Hungarian Brain Research Program (grant: 2017-1.2.1-NKP-2017-00002) and the Hungarian Brain Research Program 3.0 (NAP2022-I-4/2022); and by TKP2021-EGA-25, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-EGA funding scheme. It was also supported by the National Research, Development, and Innovation Fund of Hungary under Grant TKP2021-EGA-02 and the European Union project RRF-2.3.1-21-2022-00004 within the framework of the Artificial Intelligence National Laboratory.
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Affiliation(s)
- Nora Eszlari
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary.
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary.
| | - Gabor Hullam
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- Department of Measurement and Information Systems, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zsofia Gal
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
| | - Dora Torok
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
| | - Tamas Nagy
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
- Department of Measurement and Information Systems, Budapest University of Technology and Economics, Budapest, Hungary
| | - Andras Millinghoffer
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
- Department of Measurement and Information Systems, Budapest University of Technology and Economics, Budapest, Hungary
| | - Daniel Baksa
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
- Department of Personality and Clinical Psychology, Institute of Psychology, Faculty of Humanities and Social Sciences, Pazmany Peter Catholic University, Budapest, Hungary
| | - Xenia Gonda
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
- Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
| | - Peter Antal
- Department of Measurement and Information Systems, Budapest University of Technology and Economics, Budapest, Hungary
| | - Gyorgy Bagdy
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
| | - Gabriella Juhasz
- Department of Pharmacodynamics, Faculty of Pharmaceutical Sciences, Semmelweis University, Budapest, Hungary
- NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
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Mónica FR, Gerardo Bernabé RR, Rodrigo GZ, Melissa SB, Lorena RB. Relationship between inflammatory markers in human olfactory neural progenitor cells and antidepressant response. J Psychiatr Res 2024; 171:277-285. [PMID: 38330627 DOI: 10.1016/j.jpsychires.2024.01.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 01/03/2024] [Accepted: 01/22/2024] [Indexed: 02/10/2024]
Abstract
Response to antidepressants is related to hippocampal neurogenesis integrity, a process mediated by neurotrophins, such as Brain Derived Neurotrophic Factor (BDNF). In turn, pro-inflammatory state appears to reduce neurogenesis, and has been associated with refractory depressive states. We propose to analyze the human neural progenitor cells derived from the olfactory epithelium (HNPCs-OE) as an indicator of neurogenesis in humans. Therefore, we compared the number and content of HNPCs-OE in depressed patients taking antidepressants, according to response to treatment. Twenty depressed patients were followed during eight weeks after antidepressant treatment was prescribed. At the end evaluation they were divided in two groups according to Hamilton depression rating scale (HDRS) scores: responders and non-responders. We compared the number and components of HNPCs-OE between groups and observed an elevation of interleukine-8 in those patients who do not achieve response to treatment, BDNF levels were no related to antidepressant response.
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Affiliation(s)
- Flores-Ramos Mónica
- Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Calzada México-Xochimilco 101, San Lorenzo Huipulco, Tlalpan, Ciudad de México, Mexico.
| | - Ramírez-Rodríguez Gerardo Bernabé
- Laboratorio de Neurogénesis, Subdirección de Investigaciones Clínicas, Instituto Nacional de Psiquiatría "Ramón de la Fuente Muñiz", Calzada México-Xochimilco 101, 14370, Ciudad de México, Mexico
| | - Guiza Zayas Rodrigo
- Médico residente, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Calzada México-Xochimilco 101, San Lorenzo Huipulco, Tlalpan, Ciudad de México, Mexico
| | - Solares-Bravo Melissa
- Prácticas profesionales, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Calzada México-Xochimilco 101, San Lorenzo Huipulco, Tlalpan, Ciudad de México, Mexico
| | - Rodríguez-Bores Lorena
- Universidad Panamericana, Augusto Rodin No. 498, Insurgentes Mixcoac, Benito Juárez, 03920, Ciudad de México, CDMX, Mexico
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Athanassi A, Breton M, Chalençon L, Brunelin J, Didier A, Bath K, Mandairon N. Chronic unpredictable mild stress alters odor hedonics and adult olfactory neurogenesis in mice. Front Neurosci 2023; 17:1224941. [PMID: 37600017 PMCID: PMC10435088 DOI: 10.3389/fnins.2023.1224941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/17/2023] [Indexed: 08/22/2023] Open
Abstract
Experiencing chronic stress significantly increases the risk for depression. Depression is a complex disorder with varied symptoms across patients. However, feeling of sadness and decreased motivation, and diminished feeling of pleasure (anhedonia) appear to be core to most depressive pathology. Odorants are potent signals that serve a critical role in social interactions, avoiding danger, and consummatory behaviors. Diminished quality of olfactory function is associated with negative effects on quality of life leading to and aggravating the symptoms of depression. Odor hedonic value (I like or I dislike this smell) is a dominant feature of olfaction and guides approach or avoidance behavior of the odor source. The neural representation of the hedonic value of odorants is carried by the granule cells in the olfactory bulb, which functions to modulate the cortical relay of olfactory information. The granule cells of the olfactory bulb and those of the dentate gyrus are the two major populations of cells in the adult brain with continued neurogenesis into adulthood. In hippocampus, decreased neurogenesis has been linked to development or maintenance of depression symptoms. Here, we hypothesize that chronic mild stress can alter olfactory hedonics through effects on the olfactory bulb neurogenesis, contributing to the broader anhedonia phenotype in stress-associated depression. To test this, mice were subjected to chronic unpredictable mild stress and then tested on measures of depressive-like behaviors, odor hedonics, and measures of olfactory neurogenesis. Chronic unpredictable mild stress led to a selective effect on odor hedonics, diminishing attraction to pleasant but not unpleasant odorants, an effect that was accompanied by a specific decrease in adult neurogenesis and of the percentage of adult-born cells responding to pleasant odorants in the olfactory bulb.
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Affiliation(s)
- Anna Athanassi
- INSERM, U1028, CNRS UMR5292, Neuropop Team, Lyon Neuroscience Research Center, Université Claude Bernard Lyon 1, Université Jean Monnet, Bron, France
| | - Marine Breton
- INSERM, U1028, CNRS UMR5292, Neuropop Team, Lyon Neuroscience Research Center, Université Claude Bernard Lyon 1, Université Jean Monnet, Bron, France
| | - Laura Chalençon
- INSERM, U1028, CNRS UMR5292, Neuropop Team, Lyon Neuroscience Research Center, Université Claude Bernard Lyon 1, Université Jean Monnet, Bron, France
| | - Jérome Brunelin
- Centre Hospitalier Le Vinatier, Bron, France
- INSERM, U1028, CNRS UMR5292, PSYR2 Team, Lyon Neuroscience Research Center, Université Claude Bernard Lyon 1, Université Jean Monnet, Bron, France
| | - Anne Didier
- INSERM, U1028, CNRS UMR5292, Neuropop Team, Lyon Neuroscience Research Center, Université Claude Bernard Lyon 1, Université Jean Monnet, Bron, France
| | - Kevin Bath
- Division of Developmental Neuroscience, New York State Psychiatric Institute, Research Foundation for Mental Hygiene, New York, NY, United States
- Department of Psychiatry, Columbia University Medical College, New York, NY, United States
| | - Nathalie Mandairon
- INSERM, U1028, CNRS UMR5292, Neuropop Team, Lyon Neuroscience Research Center, Université Claude Bernard Lyon 1, Université Jean Monnet, Bron, France
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Herrmann T, Koeppel C, Linn J, Croy I, Hummel T. Olfactory brain activations in patients with Major Depressive Disorder. Sci Rep 2023; 13:10072. [PMID: 37344484 DOI: 10.1038/s41598-023-36783-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 06/09/2023] [Indexed: 06/23/2023] Open
Abstract
Depression is associated with reduced olfactory function. This relationship is assumed to be based on either a reduced olfactory bulb volume or diminished functioning of higher cortical areas. As previous results are controversial, we aimed to re-evaluate central olfactory processing in depression. We recorded the BOLD signal of 21 patients with Major Depressive Disorder and 21 age and gender matched healthy controls during odor presentation. In addition, we measured the individual olfactory bulb volume, tested odor identification and odor threshold, and asked for hedonic odor perception. In both groups, odor presentation led to a pronounced activation of primary olfactory areas. However, secondary olfactory areas were significantly less activated in depressed individuals. The two groups did not differ in olfactory bulb volume. Our results point towards altered olfactory processing in patients in those regions that relate to sensory integration and attention allocation. Difficulties in cognitive processing could impact olfactory function in depression. We are therefore in favor of a top-down mechanism originating in higher cortical areas explaining parts of the relation between depression and olfaction.
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Affiliation(s)
- Theresa Herrmann
- Department of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, Dresden, Germany.
| | - Carina Koeppel
- Department of Clinical Psychology, Friedrich Schiller University, Jena, Germany
| | - Jennifer Linn
- Department of Neuroradiology, TU Dresden, Dresden, Germany
| | - Ilona Croy
- Department of Clinical Psychology, Friedrich Schiller University, Jena, Germany
| | - Thomas Hummel
- Department of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, Dresden, Germany
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8
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Hummel T, Power Guerra N, Gunder N, Hähner A, Menzel S. Olfactory Function and Olfactory Disorders. Laryngorhinootologie 2023; 102:S67-S92. [PMID: 37130532 PMCID: PMC10184680 DOI: 10.1055/a-1957-3267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The sense of smell is important. This became especially clear to patients with infection-related olfactory loss during the SARS-CoV-2 pandemic. We react, for example, to the body odors of other humans. The sense of smell warns us of danger, and it allows us to perceive flavors when eating and drinking. In essence, this means quality of life. Therefore, anosmia must be taken seriously. Although olfactory receptor neurons are characterized by regenerative capacity, anosmia is relatively common with about 5 % of anosmic people in the general population. Olfactory disorders are classified according to their causes (e. g., infections of the upper respiratory tract, traumatic brain injury, chronic rhinosinusitis, age) with the resulting different therapeutic options and prognoses. Thorough history taking is therefore important. A wide variety of tools are available for diagnosis, ranging from short screening tests and detailed multidimensional test procedures to electrophysiological and imaging methods. Thus, quantitative olfactory disorders are easily assessable and traceable. For qualitative olfactory disorders such as parosmia, however, no objectifying diagnostic procedures are currently available. Therapeutic options for olfactory disorders are limited. Nevertheless, there are effective options consisting of olfactory training as well as various additive drug therapies. The consultation and the competent discussion with the patients are of major importance.
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Affiliation(s)
- T Hummel
- Interdisziplinäres Zentrum Riechen und Schmecken, HNO Klinik, TU Dresden
| | - N Power Guerra
- Rudolf-Zenker-Institut für Experimentelle Chirurgie, Medizinische Universität Rostock, Rostock
| | - N Gunder
- Universitäts-HNO Klinik Dresden, Dresden
| | - A Hähner
- Interdisziplinäres Zentrum Riechen und Schmecken, HNO Klinik, TU Dresden
| | - S Menzel
- Interdisziplinäres Zentrum Riechen und Schmecken, HNO Klinik, TU Dresden
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Croy I, Bierling A. Smells as Communication Pathways - why Emotions Pass through the Nose. Laryngorhinootologie 2023; 102:S93-S100. [PMID: 37130533 DOI: 10.1055/a-1935-3214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
For many species, the sense of smell is the most important sensory system for interacting with the environment and conspecifics. In contrast, the role of perception and communication of chemosensory information in humans has long been underestimated. The human sense of smell was considered less reliable, so that it was given less importance compared to visual and auditory sensory impressions. For some time now, a growing branch of research has been dealing with the role of the sense of sell in emotion and social communication, which is often only perceived subconsciously. This connection will be examine in more detail in this article. First, he basics regarding the structure and function of our olfactory system will be described for better understanding and classification. Then, with this background knowledge, the significance of olfaction for interpersonal communication and emotions will be discussed. Finally, we conclude that people suffering from olfactory disorders have specific impairments in their quality of life.
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Affiliation(s)
- Ilona Croy
- Institut für Klinische Psychologie, Friedrich-Schiller-Universität Jena
- Klinik für Psychotherapie und Psychosomatik, Universitätsklinikum Carl Gustav Carus Dresden
| | - Antonie Bierling
- Institut für Klinische Psychologie, Friedrich-Schiller-Universität Jena
- Klinik für Psychotherapie und Psychosomatik, Universitätsklinikum Carl Gustav Carus Dresden
- Institut für Materialwissenschaft und Nanotechnik, Technische Universität Dresden
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10
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Castellano P, Gigli V, Ghezzi V, Ang YS, Schettino M, Pizzagalli DA, Ottaviani C. Momentary gustative-olfactory sensitivity and tonic heart rate variability are independently associated with motivational behavior. Int J Psychophysiol 2023; 186:1-9. [PMID: 36738932 DOI: 10.1016/j.ijpsycho.2023.01.010] [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: 11/05/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
Deficits in motivational functioning including impairments in reward learning or reward sensitivity are common in psychiatric disorders characterized by anhedonia. Recently, anhedonic symptoms have been exacerbated by the pandemic caused by the Coronavirus disease 2019 (COVID-19) in the general population. The present study examined the putative associations between loss of smell (anosmia) and taste (ageusia) sensitivity, irrespective of COVID-19 infection, and anhedonia, measured by a signal-detection task probing the ability to modify behavior as a function of rewards (Probabilistic Reward Task; PRT). Tonic heart rate variability (HRV) was included in the model, due to its association with both smell and taste sensitivity as well as motivational functioning. The sample included 114 healthy individuals (81 females; mean age 22.2 years), who underwent a laboratory session in which dispositional traits, resting HRV and PRT performance were assessed, followed by a 4-days ecological momentary assessment to obtain daily measures of anosmia and ageusia. Lower levels of tonic HRV and lower momentary levels of smell and taste sensitivity were associated with impaired reward responsiveness and ability to shape future behavioral choices based on prior reinforcement experiences. Overall, the current results provide initial correlational evidence that could be fruitfully used to inform future experimental investigations aimed at elucidating the disruptive worldwide mental health consequences triggered by the pandemic.
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Affiliation(s)
- Paola Castellano
- Department of Psychology, Sapienza University of Rome, Rome, Italy; Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Valeria Gigli
- Department of Psychology, Sapienza University of Rome, Rome, Italy
| | - Valerio Ghezzi
- Department of Psychology, Sapienza University of Rome, Rome, Italy
| | - Yuen-Siang Ang
- Department of Social and Cognitive Computing, Institute of High Performance Computing, Agency for Science, Technology and Research, Singapore
| | - Martino Schettino
- Department of Psychology, Sapienza University of Rome, Rome, Italy; Neuroimaging Laboratory, IRCCS, Santa Lucia Foundation, Rome, Italy
| | - Diego A Pizzagalli
- Center for Depression, Anxiety and Stress Research, McLean Hospital, Belmont, MA, USA; Department of Psychiatry, Harvard Medical School, Belmont, MA, USA
| | - Cristina Ottaviani
- Department of Psychology, Sapienza University of Rome, Rome, Italy; Neuroimaging Laboratory, IRCCS, Santa Lucia Foundation, Rome, Italy.
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11
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Deficits in peripheric and central olfactory measurements in smokers: evaluated by cranial MRI. Eur Arch Otorhinolaryngol 2023; 280:1265-1271. [PMID: 36242611 DOI: 10.1007/s00405-022-07700-4] [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: 07/06/2022] [Accepted: 10/10/2022] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Cigarette smoking remains a serious health problem all over the world. We investigated the peripheral and central olfactory pathways in young male smokers to determine whether there is a relationship between the amount of cigarettes smoked and duration of smoking and the dimensions of the olfactory areas. METHODS In this retrospective study, cranial Magnetic Resonance Imaging (MRI) images of adult male smokers aged ≤ 40 years (n = 51) and 50 healthy male adults were analyzed. The olfactory bulbus (OB) volumes and olfactory sulcus (OS) depths, insular gyrus, and corpus amygdala areas were measured via cranial MRI. In the smoker group, the number of cigarettes smoked and duration of smoking were noted and the Brinkmann index was calculated. RESULTS OB volume, OS depth, and the insular gyrus areas of the smokers were lower than in the control group (p < 0.05). There were no differences between the groups in terms of the corpus amygdala measurements (p > 0.05). No significant correlations were found between the number of cigarettes smoked daily, smoking duration, and the Brinkmann index and the peripheral and central olfactory measurements in our study (p > 0.05). CONCLUSIONS In smokers, OB volumes, the OS, and the central areas decrease bilaterally, regardless of smoking duration and number of cigarettes smoked daily. This could be related to inflammatory mediators that may be harmful to the olfactory neuroepithelium, gray matter atrophy in the brain, or endothelial damage related to smoking and its effects on blood support to the brain and olfactory regions.
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12
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Rath TJ, Policeni B, Juliano AF, Agarwal M, Block AM, Burns J, Conley DB, Crowley RW, Dubey P, Friedman ER, Gule-Monroe MK, Hagiwara M, Hunt CH, Jain V, Powers WJ, Rosenow JM, Taheri MR, DuChene Thoma K, Zander D, Corey AS. ACR Appropriateness Criteria® Cranial Neuropathy: 2022 Update. J Am Coll Radiol 2022; 19:S266-S303. [PMID: 36436957 DOI: 10.1016/j.jacr.2022.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/07/2022] [Indexed: 11/27/2022]
Abstract
Cranial neuropathy can result from pathology affecting the nerve fibers at any point and requires imaging of the entire course of the nerve from its nucleus to the end organ in order to identify a cause. MRI with and without intravenous contrast is often the modality of choice with CT playing a complementary role. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.
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Affiliation(s)
- Tanya J Rath
- Division Chair of Neuroradiology, Mayo Clinic Arizona, Phoenix, Arizona.
| | - Bruno Policeni
- Panel Chair; Department of Radiology Vice-Chair, University of Iowa Hospitals and Clinics, Iowa City, Iowa; President Iowa Radiological Society and ACR Councilor
| | - Amy F Juliano
- Panel Vice-Chair, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; NI-RADS committee chair
| | - Mohit Agarwal
- Froedtert Memorial Lutheran Hospital Medical College of Wisconsin, Milwaukee, Wisconsin; Fellowship Program Director
| | - Alec M Block
- Stritch School of Medicine Loyola University Chicago, Maywood, Illinois
| | - Judah Burns
- Montefiore Medical Center, Bronx, New York; Vice-Chair for Education & Residency Program Director, Montefiore Medical Center; Vice-Chair, Subcommittee on Methodology
| | - David B Conley
- Practice Director, Northwestern ENT and Rhinology Fellowship Director, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and Member, American Academy of Otolaryngology-Head and Neck Surgery
| | - R Webster Crowley
- Rush University Medical Center, Chicago, Illinois; Neurosurgery expert; Chief, Cerebrovascular and Endovascular Neurosurgery; Medical Director, Department of Neurosurgery; Surgical Director, Rush Comprehensive Stroke Center; Program Director, Endovascular Neurosurgery
| | | | - Elliott R Friedman
- University of Texas Health Science Center, Houston, Texas; Diagnostic Radiology Residency Program Director
| | - Maria K Gule-Monroe
- The University of Texas MD Anderson Cancer Center, Houston, Texas; Medical Director of Diagnostic Imaging at Houston Area Location Woodlands
| | - Mari Hagiwara
- Neuroradiology Fellowship Program Director and Head and Neck Imaging Director, New York University Langone Medical Center, New York, New York
| | | | - Vikas Jain
- MetroHealth Medical Center, Cleveland, Ohio; Medical Director, Lumina Imaging
| | - William J Powers
- University of North Carolina School of Medicine, Chapel Hill, North Carolina; American Academy of Neurology
| | - Joshua M Rosenow
- Neuroradiology Fellowship Program Director and Head and Neck Imaging Director, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - M Reza Taheri
- George Washington University Hospital, Washington, District of Columbia; Director of Neuroradiology
| | - Kate DuChene Thoma
- Director of Faculty Development Fellowship, University of Iowa Hospital, Iowa City, Iowa; Primary care physician
| | - David Zander
- Chief of Head and Neck Radiology, University of Colorado Denver, Denver, Colorado
| | - Amanda S Corey
- Specialty Chair, Atlanta VA Health Care System and Emory University, Atlanta, Georgia
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13
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Chen G, Zhou S, Chen Q, Liu M, Dong M, Hou J, Zhou B. Tryptophan-5-HT pathway disorder was uncovered in the olfactory bulb of a depression mice model by metabolomic analysis. Front Mol Neurosci 2022; 15:965697. [PMID: 36299862 PMCID: PMC9589483 DOI: 10.3389/fnmol.2022.965697] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 09/14/2022] [Indexed: 11/13/2022] Open
Abstract
Major depression (MD) is a severe mental illness that creates a heavy social burden, and the potential molecular mechanisms remain largely unknown. Lots of research demonstrate that the olfactory bulb is associated with MD. Recently, gas chromatography-mass spectrometry-based metabolomic studies on depressive rats indicated that metabolisms of purine and lipids were disordered in the olfactory bulb. With various physicochemical properties and extensive concentration ranges, a single analytical technique could not completely cover all metabolites, hence it is necessary to adopt another metabolomic technique to seek new biomarkers or molecular mechanisms for depression. Therefore, we adopted a liquid chromatography-mass spectrometry metabonomic technique in the chronic mild stress (CMS) model to investigate significant metabolic changes in the olfactory bulb of the mice. We discovered and identified 16 differential metabolites in the olfactory bulb of the CMS treatments. Metabolic pathway analysis by MetaboAnalyst 5.0 was generated according to the differential metabolites, which indicated that the tryptophan metabolism pathway was the core pathogenesis in the olfactory bulb of the CMS depression model. Further, the expressions of tryptophan hydroxylase (TpH) and aromatic amino acid decarboxylase (AAAD) were detected by western blotting and immunofluorescence staining. The expression of TpH was increased after CMS treatment, and the level of AAAD was unaltered. These results revealed that abnormal metabolism of the tryptophan pathway in the olfactory bulb mediated the occurrence of MD.
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Affiliation(s)
- Guanghui Chen
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, China
| | - Siqi Zhou
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qiang Chen
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengmeng Liu
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, China
| | - Meixue Dong
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
- *Correspondence: Meixue Dong
| | - Jiabao Hou
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
- Jiabao Hou
| | - Benhong Zhou
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, China
- Benhong Zhou
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14
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Leon M, Woo CC. Olfactory loss is a predisposing factor for depression, while olfactory enrichment is an effective treatment for depression. Front Neurosci 2022; 16:1013363. [PMID: 36248633 PMCID: PMC9558899 DOI: 10.3389/fnins.2022.1013363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
The loss of olfactory stimulation correlates well with at least 68 widely differing neurological disorders, including depression, and we raise the possibility that this relationship may be causal. That is, it seems possible that olfactory loss makes the brain vulnerable to expressing the symptoms of these neurological disorders, while daily olfactory enrichment may decrease the risk of expressing these symptoms. This situation resembles the cognitive reserve that is thought to protect people with Alzheimer’s neuropathology from expressing the functional deficit in memory through the cumulative effect of intellectual stimulation. These relationships also resemble the functional response of animal models of human neurological disorders to environmental enrichment, wherein the animals continue to have the induced neuropathology, but do not express the symptoms as they do in a standard environment with restricted sensorimotor stimulation.
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Affiliation(s)
- Michael Leon
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, United States
- Center for the Neurobiology of Learning and Memory, Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA, United States
- *Correspondence: Michael Leon,
| | - Cynthia C. Woo
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, United States
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15
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Abstract
Olfactory loss is associated with symptoms of depression. The present study, conducted on a large cohort of mostly dysosmic patients, aimed to investigate whether improvement in olfactory performance would correspond with a decrease in depression severity. In 171 participants (157 dysosmic), we assessed olfactory function and severity of depression before and after an average interval of 11 months, with many patients showing improvement in olfactory function. Separate analyses were conducted for (a) the whole group of patients and (b) the group of dysosmic patients using both classic and Bayesian approaches. For odor identification, Student t test demonstrated that the whole sample improved consistently, especially within the group of dysosmic patients. The dysosmic group also improved in odor threshold and overall olfactory function. Pearson correlation showed that an increase in olfactory function was associated with a decrease in depression severity, particularly in dysosmic patients. To conclude, the present results indicate that symptoms of depression change with olfactory function in general and odor identification in particular.
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16
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Kung WM, Lin CC, Chen WJ, Jiang LL, Sun YY, Hsieh KH, Lin MS. Anti-Inflammatory CDGSH Iron-Sulfur Domain 2: A Biomarker of Central Nervous System Insult in Cellular, Animal Models and Patients. Biomedicines 2022; 10:biomedicines10040777. [PMID: 35453528 PMCID: PMC9030396 DOI: 10.3390/biomedicines10040777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 02/05/2023] Open
Abstract
Spinal cord injury (SCI) promotes brain inflammation; conversely, brain injury promotes spinal neuron loss. There is a need to identify molecular biomarkers and therapeutic targets for central nervous system (CNS) injury. CDGSH iron-sulfur structural domain 2 (CISD2), an NF-κB antagonist, is downregulated after injury in vivo and in vitro. We aimed to examine the diagnostic value of CISD2 in patients with CNS insult. Plasma and cerebrospinal fluid (CSF) CISD2 levels were decreased in 13 patients with CNS insult and were negatively correlated with plasma IL6 levels (associated with disease severity; r = −0.7062; p < 0.01). SCI-induced inflammatory mediators delivered through CSF promoted mouse brain inflammation at 1 h post-SCI. Anti-CISD2 antibody treatment exacerbated SCI-induced inflammation in mouse spine and brain. Lipopolysaccharide-stimulated siCISD2-transfected EOC microglial cells exhibited proinflammatory phenotypes (enhanced M1 polarization, decreased M2 polarization, and increased intranuclear NF-κB p65 translocation). Plasma and CSF CISD2 levels were increased in three patients with CNS insult post-therapeutic hypothermia. CISD2 levels were negatively correlated with plasma and CSF levels of inflammatory mediators. CISD2 inhibition and potentiation experiments in cells, animals, and humans revealed CISD2 as a biomarker for CNS insult and upregulation of CISD2 anti-inflammatory properties as a potential therapeutic strategy for CNS insult.
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Affiliation(s)
- Woon-Man Kung
- Division of Neurosurgery, Department of Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan;
- Department of Exercise and Health Promotion, College of Kinesiology and Health, Chinese Culture University, Taipei 11114, Taiwan
| | - Chai-Ching Lin
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan 26047, Taiwan; (C.-C.L.); (W.-J.C.); (L.-L.J.)
| | - Wei-Jung Chen
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan 26047, Taiwan; (C.-C.L.); (W.-J.C.); (L.-L.J.)
| | - Li-Lin Jiang
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan 26047, Taiwan; (C.-C.L.); (W.-J.C.); (L.-L.J.)
| | - Yu-Yo Sun
- Institute of Biopharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan;
- Department of Neuroscience, Center for Brain Immunology and Glia (BIG), University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Kuang-Hui Hsieh
- Department of Laboratory Service, Kuang Tien General Hospital, Taichung 43303, Taiwan;
| | - Muh-Shi Lin
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan 26047, Taiwan; (C.-C.L.); (W.-J.C.); (L.-L.J.)
- Division of Neurosurgery, Department of Surgery, Kuang Tien General Hospital, Taichung 43303, Taiwan
- Department of Biotechnology, College of Medical and Health Care, Hung Kuang University, Taichung 43302, Taiwan
- Department of Health Business Administration, College of Medical and Health Care, Hung Kuang University, Taichung 43302, Taiwan
- Correspondence:
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17
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Cengiz GF, Serin Hİ, Cengiz C. Evaluation of olfactory bulb volume and olfactory sulcus depth in patients with panic disorder and depressive disorder: An MRI study. Indian J Psychiatry 2022; 64:171-177. [PMID: 35494332 PMCID: PMC9045350 DOI: 10.4103/indianjpsychiatry.indianjpsychiatry_466_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 11/02/2021] [Accepted: 02/10/2022] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Although some studies have shown decreases in the olfactory bulb (OB) volume and olfactory function in depressive disorder, there are no studies investigating OB volume in patients with panic disorder. AIM The aim of this study was to investigate whether there was a change in OB volume and olfactory sulcus (OS) depth in patients with panic and depressive disorder when compared with the control group, and which group was more affected by comparing the two disease groups. METHODS Data of 51 patients with panic disorder and 56 patients with depressive disorder were obtained by scanning the database of the hospital retrospectively. The control group consisted of 56 subjects without panic and depressive disorder. OB volume and OS depth measurements were performed on cranial magnetic resonance imaging (MRI). RESULTS Bilateral OB volume of the panic and depressive disorder groups were significantly lower than those of the control group. The lowest volume was found in depressive patients. There was no significant difference between the groups with respect to OS measurements. When OB volume and OS depth differences between the genders were evaluated, a statistically significant difference was not determined. CONCLUSION Reduced OB volume was determined in both panic and depressive disorder patients, and clarification of these preliminary findings may contribute to the pathophysiology of panic and depressive disorders.
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Affiliation(s)
- Gül Ferda Cengiz
- Department of Psychiatry, Nose and Throat, Bozok University School of Medicine, Yozgat, Turkey
| | - Halil İbrahim Serin
- Department of Radiology, Nose and Throat, Bozok University School of Medicine, Yozgat, Turkey
| | - Ceyhun Cengiz
- Department of Ear, Nose and Throat, Bozok University School of Medicine, Yozgat, Turkey
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18
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Wang Q, Chen B, Zhong X, Zhou H, Zhang M, Mai N, Wu Z, Chen X, Yang M, Zhang S, lin G, Hummel T, Ning Y. Neuropsychiatric Symptoms Mediated the Relationship Between Odor Identification and Cognition in Alzheimer's Disease Spectrum: A Structural Equation Model Analysis. Front Aging Neurosci 2022; 13:732840. [PMID: 35095464 PMCID: PMC8789652 DOI: 10.3389/fnagi.2021.732840] [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: 06/29/2021] [Accepted: 12/06/2021] [Indexed: 12/29/2022] Open
Abstract
Background: Odor identification dysfunction is an early predictor of the development of Alzheimer's disease (AD), but neuropsychiatric symptoms (NPS), which are common in AD and mild cognitive impairment (MCI), are also associated with odor identification dysfunction. Whether NPS affect the specificity of using odor identification dysfunction to predict cognitive decline in AD and MCI remains unclear.Methods: Patients (233 with MCI and 45 with AD) and 45 healthy controls (HCs) underwent assessments of odor identification (Sniffin' Sticks), NPS (Neuropsychiatric Inventory-12), and cognitive function (global cognition, memory, language, executive function, visual-spatial skill, and attention). Structural equation modeling (SEM) with bootstrapping estimation was conducted to explore the relationships between odor identification, NPS, and cognition.Results: Patients with NPS showed significantly worse performance in odor identification and cognition than patients without NPS and HCs. The SEM showed odor identification to be positively associated with cognition, and cognition had special indirect effects on odor identification through affective and psychosis symptoms (two factors extracted from Neuropsychiatric Inventory-12). Additionally, affective and psychosis symptoms partially mediated the effect of cognition on odor identification.Conclusion: Neuropsychiatric symptoms are associated with odor identification dysfunction in patients with AD and MCI. Studies exploring the relationship between odor identification dysfunction and cognitive decline in patients with AD and MCI should include an assessment of affective and psychosis symptoms, and adjust their confounding effects.
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Affiliation(s)
- Qiang Wang
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
- Department of Geriatric Psychiatry, The Second People's Hospital of Dali Bai Autonomous Prefecture, Dali, China
| | - Ben Chen
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Xiaomei Zhong
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Huarong Zhou
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Min Zhang
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Naikeng Mai
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Zhangying Wu
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Xinru Chen
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Mingfeng Yang
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Si Zhang
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Gaohong lin
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
| | - Thomas Hummel
- Department of Otorhinolaryngology, Smell and Taste Clinic, Technische Universität Dresden, Dresden, Germany
| | - Yuping Ning
- Department of Geriatric Psychiatry, Memory Clinic, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou, China
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China
- *Correspondence: Yuping Ning
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Investigating Olfactory Bulb Volume Reduction as a Potential Biomarker for Some Neuropsychiatric Disorders: A Narrative Review. JOURNAL OF CLINICAL AND BASIC RESEARCH 2021. [DOI: 10.52547/jcbr.5.3.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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20
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The Olfactory System as Marker of Neurodegeneration in Aging, Neurological and Neuropsychiatric Disorders. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18136976. [PMID: 34209997 PMCID: PMC8297221 DOI: 10.3390/ijerph18136976] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/19/2021] [Accepted: 06/24/2021] [Indexed: 12/14/2022]
Abstract
Research studies that focus on understanding the onset of neurodegenerative pathology and therapeutic interventions to inhibit its causative factors, have shown a crucial role of olfactory bulb neurons as they transmit and propagate nerve impulses to higher cortical and limbic structures. In rodent models, removal of the olfactory bulb results in pathology of the frontal cortex that shows striking similarity with frontal cortex features of patients diagnosed with neurodegenerative disorders. Widely different approaches involving behavioral symptom analysis, histopathological and molecular alterations, genetic and environmental influences, along with age-related alterations in cellular pathways, indicate a strong correlation of olfactory dysfunction and neurodegeneration. Indeed, declining olfactory acuity and olfactory deficits emerge either as the very first symptoms or as prodromal symptoms of progressing neurodegeneration of classical conditions. Olfactory dysfunction has been associated with most neurodegenerative, neuropsychiatric, and communication disorders. Evidence revealing the dual molecular function of the olfactory receptor neurons at dendritic and axonal ends indicates the significance of olfactory processing pathways that come under environmental pressure right from the onset. Here, we review findings that olfactory bulb neuronal processing serves as a marker of neuropsychiatric and neurodegenerative disorders.
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21
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Lin MS, Chiu IH, Lin CC. Ultrarapid Inflammation of the Olfactory Bulb After Spinal Cord Injury: Protective Effects of the Granulocyte Colony-Stimulating Factor on Early Neurodegeneration in the Brain. Front Aging Neurosci 2021; 13:701702. [PMID: 34248610 PMCID: PMC8267925 DOI: 10.3389/fnagi.2021.701702] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 05/27/2021] [Indexed: 11/13/2022] Open
Abstract
The correlation among olfactory dysfunction, spinal cord injury (SCI), subjective cognitive decline, and neurodegenerative dementia has been established. Impaired olfaction is considered a marker for neurodegeneration. Hence, there is a need to examine if SCI leads to olfactory dysfunction. In this study, the brain tissue of mice with spinal cord hemisection injury was subjected to microarray analysis. The mRNA expression levels of olfactory receptors in the brain began to decline at 8 h post-SCI. SCI promoted neuroinflammation, downregulated the expression of olfactory receptors, decreased the number of neural stem cells (NSCs), and inhibited the production of neurotrophic factors in the olfactory bulbs at 8 h post-SCI. In particular, the SCI group had upregulated mRNA and protein expression levels of glial fibrillary acidic protein (GFAP; a marker of astrocyte reactivation) and pro-inflammatory mediators [IL-1β, IL-6, and Nestin (marker of NSCs)] in the olfactory bulb compared to levels in the sham control group. The mRNA expression levels of olfactory receptors (Olfr1494, Olfr1324, Olfr1241, and Olfr979) and neurotrophic factors [brain-derived neurotrophic factor (BDNF), glial cell-derived neurotrophic factor (GDNF), and nerve growth factor (NGF)] were downregulated in the olfactory bulb of the SCI group mice at 8 h post-SCI. The administration of granulocyte colony-stimulating factor (G-CSF) mitigated these SCI-induced pathological changes in the olfactory bulb at 8 h post-SCI. These results indicate that the olfactory bulb is vulnerable to environmental damage even if the lesion is located at sites distant from the brain, such as the spinal cord. Additionally, SCI initiated pathological processes, including inflammatory response, and impaired neurogenesis, at an early stage. The findings of this study will provide a basis for future studies on pathological mechanisms of early neurodegenerative diseases involving the olfactory bulb and enable early clinical drug intervention.
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Affiliation(s)
- Muh-Shi Lin
- Division of Neurosurgery, Department of Surgery, Kuang Tien General Hospital, Taichung, Taiwan.,Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan, Taiwan.,Department of Biotechnology, College of Medical and Health Care, Hung Kuang University, Taichung, Taiwan.,Department of Health Business Administration, College of Medical and Health Care, Hung Kuang University, Taichung, Taiwan
| | - I-Hsiang Chiu
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan, Taiwan
| | - Chai-Ching Lin
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Yilan, Taiwan
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Heinbockel T, Bhatia-Dey N, Shields VDC. Endocannabinoid-mediated neuromodulation in the main olfactory bulb at the interface of environmental stimuli and central neural processing. Eur J Neurosci 2021; 55:1002-1014. [PMID: 33724578 DOI: 10.1111/ejn.15186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 02/10/2021] [Accepted: 03/05/2021] [Indexed: 12/16/2022]
Abstract
The olfactory system has become an important functional gateway to understand and analyze neuromodulation since olfactory dysfunction and deficits have emerged as prodromal and, at other times, as first symptoms of many of neurodegenerative, neuropsychiatric and communication disorders. Considering olfactory dysfunction as outcome of altered, damaged and/or inefficient olfactory processing, in the current review, we analyze how olfactory processing interacts with the endocannabinoid signaling system. In the human body, endocannabinoid synthesis is a natural and on-demand response to a wide range of physiological and environmental stimuli. Our current understanding of the response dynamics of the endocannabinoid system is based in large part on research advances in limbic system areas, such as the hippocampus and the amygdala. Functional interactions of this signaling system with olfactory processing and associated pathways are just emerging but appear to grow rapidly with multidimensional approaches. Recent work analyzing the crystal structure of endocannabinoid receptors bound to their agonists in a signaling complex has opened avenues for developing specific therapeutic drugs that could help with neuroinflammation, neurodegeneration, and alleviation/reduction of pain. We discuss the role of endocannabinoids as signaling molecules in the olfactory system and the relevance of the endocannabinoid system for synaptic plasticity.
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Affiliation(s)
- Thomas Heinbockel
- Department of Anatomy, Howard University College of Medicine, Washington, DC, USA
| | - Naina Bhatia-Dey
- Department of Anatomy, Howard University College of Medicine, Washington, DC, USA
| | - Vonnie D C Shields
- Biological Sciences Department, Fisher College of Science and Mathematics, Towson University, Towson, MD, USA
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23
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Noseda ACD, Rodrigues LS, Targa ADS, Ilkiw JL, Fagotti J, Dos Santos PD, Cecon E, Markus RP, Solimena M, Jockers R, Lima MMS. MT 2 melatonin receptors expressed in the olfactory bulb modulate depressive-like behavior and olfaction in the 6-OHDA model of Parkinson's disease. Eur J Pharmacol 2021; 891:173722. [PMID: 33159932 DOI: 10.1016/j.ejphar.2020.173722] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 12/26/2022]
Abstract
Melatonin MT1 and MT2 receptors are expressed in the glomerular layer of the olfactory bulb (OB); however, the role of these receptors has not been evaluated until now. Considering the association of the OB with olfactory and depressive disorders in Parkinson's disease (PD), we sought to investigate the involvement of melatonin receptors in these non-motor disturbances in an intranigral 6-hydroxydopamine (6-OHDA)-lesioned rat model of PD. We demonstrate the presence of functional melatonin receptors in dopaminergic neurons of the glomerular layer. Local administration of melatonin (MLT, 1 μg/μl), luzindole (LUZ, 5 μg/μl) or the MT2-selective receptor drug 4-P-PDOT (5 μg/μl) reversed the depressive-like behavior elicited by 6-OHDA. Sequential administration of 4-P-PDOT and MLT (5 μg/μl, 1 μg/μl) promoted additive antidepressant-like effects. In the evaluation of olfactory discrimination, LUZ induced an olfactory impairment when associated with the nigral lesion-induced impairment. Thus, our results suggest that melatonin MT2 receptors expressed in the glomerular layer are involved in depressive-like behaviors and in olfactory function associated with PD.
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Affiliation(s)
- Ana Carolina D Noseda
- Department of Physiology, Federal University of Paraná, Curitiba, PR, Brazil; Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Lais S Rodrigues
- Department of Physiology, Federal University of Paraná, Curitiba, PR, Brazil; Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Adriano D S Targa
- Department of Physiology, Federal University of Paraná, Curitiba, PR, Brazil; Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil; Translational Research in Respiratory Medicine, Hospital Universitari Arnau de Vilanova-Santa Maria, IRBLleida, Lleida, Spain; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Jessica L Ilkiw
- Department of Physiology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Juliane Fagotti
- Department of Physiology, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Erika Cecon
- Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 Paris, France
| | - Regina P Markus
- Department of Physiology, Institute of Bioscience, University of São Paulo, São Paulo, Brazil
| | - Michele Solimena
- Paul Langerhans Institute Dresden (PLID) of the Helmholtz Center Munich at the University Hospital Carl Gustav Carus and Faculty of Medicine of the TU Dresden, Dresden, Germany; German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Ralf Jockers
- Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 Paris, France
| | - Marcelo M S Lima
- Department of Physiology, Federal University of Paraná, Curitiba, PR, Brazil; Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil.
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24
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Eliyan Y, Wroblewski KE, McClintock MK, Pinto JM. Olfactory Dysfunction Predicts the Development of Depression in Older US Adults. Chem Senses 2020; 46:5983672. [PMID: 33197253 DOI: 10.1093/chemse/bjaa075] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Neuroanatomic connections link the olfactory and limbic systems potentially explaining an association between olfactory dysfunction and depression. Some previous studies have demonstrated that olfactory dysfunction is associated with increased depressive symptoms. However, these studies were cross-sectional and unable to establish which develops first. We used longitudinal data to determine if impaired odor identification increased subsequent depressive symptoms or vice versa. We assessed olfaction and depression in the National Social Life, Health, and Aging Project, a nationally representative, 15-year longitudinal study of older US adults. Olfaction was measured using a validated odor identification test (Sniffin' Sticks). Depressive symptoms were measured using a modified version of the validated Center for Epidemiological Studies Depression Scale. Multivariable logistic regression models examined the temporal relationships between developing olfactory dysfunction and depression while accounting for demographics, disease comorbidities, alcohol use, smoking, and cognition. Older adults with olfactory dysfunction had concurrent frequent depressive symptoms (odds ratio [OR] = 1.20, 95% confidence interval [CI] = 1.00-1.43). Among healthy adults at baseline, those who had olfactory dysfunction were more likely to develop frequent depressive symptoms 5 or 10 years later (OR = 2.22, 95% CI = 1.13-4.37). Conversely, those with frequent depressive symptoms at baseline were not more likely to develop olfactory dysfunction 5 or 10 years later. We show for the first time that olfactory dysfunction predicts subsequent development of depression in older US adults. These data support screening for depression in older adults with chemosensory impairment and set the stage for disentangling the relationship between olfaction and depression.
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Affiliation(s)
- Yazan Eliyan
- Pritzker School of Medicine, The University of Chicago, Chicago, IL, USA
| | - Kristen E Wroblewski
- Department of Public Health Sciences, The University of Chicago, Chicago, IL, USA
| | - Martha K McClintock
- Department of Comparative Human Development, The University of Chicago, Chicago, IL, USA.,Department of Psychology, The University of Chicago, Chicago, IL, USA
| | - Jayant M Pinto
- Section of Otolaryngology-Head and Neck Surgery, Department of Surgery, The University of Chicago, Chicago, IL, USA
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25
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Kazour F, Richa S, Abi Char C, Surget A, Elhage W, Atanasova B. Olfactory markers for depression: Differences between bipolar and unipolar patients. PLoS One 2020; 15:e0237565. [PMID: 32791517 PMCID: PMC7426149 DOI: 10.1371/journal.pone.0237565] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 07/30/2020] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVES The aim of the study was to compare olfactory functions between unipolar and bipolar patients according to the thymic states (depressed, euthymic) and determine specific olfactory variations between these different states. METHODS We recruited 176 participants in 5 groups: depressed bipolar (DB), euthymic bipolar (EB), depressed unipolar (DU), euthymic unipolar (EU), and controls (HC). They were assessed using the Sniffin' sticks threshold and identification tests. Odors' pleasantness, intensity, familiarity and emotion were assessed. Clinical evaluation explored dimensions of depression, mania, anxiety, and anhedonia. RESULTS Smell identification was lower in DU compared to EU patients and controls. Pleasant odors received lower hedonic rating in DU and DB patients compared to EU and EB patients respectively. Negative correlation was found in EB patients between hedonic rating and social anhedonia. In EU patients hedonic rating was negatively correlated with anxiety-state, and anhedonia. CONCLUSIONS Odor identification of pleasant odors is altered in both depressive states. Only unipolar patients would recover a regular identification level in symptomatic remission, while bipolar subjects would keep their deficits. Hedonic rating is lower in bipolar depressed patients compared to unipolar ones, and these deficits improve after remission. Hedonic rating of pleasant odors may distinguish bipolar depression from unipolar depression during periods of decompensation and phases of remission. Olfactory assessment may be useful to screen unipolar and bipolar depression, leading to possible future sensory markers in mood disorders.
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Affiliation(s)
- François Kazour
- UMR 1253, Inserm, iBrain, Université de Tours, Tours, France
- Psychiatric Hospital of the Cross, Jal Eddib, Lebanon
- Department of Psychiatry, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | - Sami Richa
- Department of Psychiatry, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | | | | | - Wissam Elhage
- UMR 1253, Inserm, iBrain, Université de Tours, Tours, France
- CHRU de Tours, Clinique Psychiatrique Universitaire, Tours, France
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26
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Pabel LD, Murr J, Weidner K, Hummel T, Croy I. Null Effect of Olfactory Training With Patients Suffering From Depressive Disorders-An Exploratory Randomized Controlled Clinical Trial. Front Psychiatry 2020; 11:593. [PMID: 32670115 PMCID: PMC7326271 DOI: 10.3389/fpsyt.2020.00593] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 06/09/2020] [Indexed: 01/18/2023] Open
Abstract
Due to a close functional relation between brain areas processing emotion and those processing olfaction, major depression is often accompanied by reduced olfactory function. Such hyposmia can be improved by regular olfactory training (OT) over several months. As this training furthermore improves subjective well-being, we explored whether OT is a useful complementary strategy for depression treatment. A total of 102 depressive outpatients were randomly assigned to OT or a control training condition, which were performed twice a day for 16 weeks. Compliance was continuously monitored. Before and after training we measured depression severity and olfactory function. About half of the patients of both groups did not complete the training. Among the remaining patients, depression severity decreased significantly in both groups. The absence of an interaction effect indicated no selective impact of OT and the variance of depression improvement explained by OT was as little as 0.1%. The low compliance suggests that OT is not feasible for large parts of our sample of depressive outpatients, most likely due to a disease-immanent lack of motivation. In those patients who completed the training, lack of specific effects suggest that OT is not more useful then unspecific activation or attention training. CLINICAL TRIAL REGISTRATION This clinical trial was registered at German Registry for Clinical Trials (DRKS), main ID: DRKS00016350, URL: http://www.drks.de/DRKS00016350.
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Affiliation(s)
- Luise D. Pabel
- Department of Psychotherapy and Psychosomatic Medicine, Medizinische Fakultät Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Julia Murr
- Department of Psychotherapy and Psychosomatic Medicine, Medizinische Fakultät Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Kerstin Weidner
- Department of Psychotherapy and Psychosomatic Medicine, Medizinische Fakultät Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Thomas Hummel
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - Ilona Croy
- Department of Psychotherapy and Psychosomatic Medicine, Medizinische Fakultät Carl Gustav Carus, TU Dresden, Dresden, Germany
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27
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Association between olfactory function and inhibition of emotional competing distractors in major depressive disorder. Sci Rep 2020; 10:6322. [PMID: 32286450 PMCID: PMC7156747 DOI: 10.1038/s41598-020-63416-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 03/30/2020] [Indexed: 01/10/2023] Open
Abstract
We aimed to investigate the changes of olfaction of major depressive disorder (MDD) before and after medical treatment, and to preliminarily scrutinize the association between the olfactory function and the severity of depressive symptoms, response inhibition, and emotional responding. Forty-eight medicine-naïve MDD patients plus 33 healthy controls (HC) matched on gender, ages, and level of education, were recruited in the test group. The Chinese Smell Identification Test (CSIT), Self-reported Olfactory Scale (SROS), 17-item Hamilton Depression Rating Scale (HAMD-17), Hamilton Anxiety Rating Scale (HAMA), and mean reaction time/accuracy rate (ΔMRT) of emotional Stroop test were measured. The patients were assessed before the treatment (baseline) and 3 months after the treatment (follow-up). The data at the baseline level were measured then associated using multiple linear regression stepwise analysis. The MDD patients had lower scores of the CSIT and SROS and longer ΔMRT at baseline level compared to HC while the ΔMRT of MDD patients remained longer after 3-month treatment (p’s < 0.05). At the baseline level, the regression equation including age and ΔMRT of negative word-color congruent (NEG-C), was finally observed as follows: y(CSIT) = 10.676–0.063 × 1–0.002 × 2, [x1 = the age(y), x2 = the NEG-C (ms)]. The olfactory function of MDD appears to be correlated negatively with the age and the ΔMRT of negative stimuli before treatment. After the remission of MDD, the olfactory dysfunction was improved, which might be regarded as a responding phenotype of brain function of MDD rather than the emotional responding.
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28
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Wang F, Wu X, Gao J, Li Y, Zhu Y, Fang Y. The relationship of olfactory function and clinical traits in major depressive disorder. Behav Brain Res 2020; 386:112594. [PMID: 32194189 DOI: 10.1016/j.bbr.2020.112594] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 02/12/2020] [Accepted: 03/10/2020] [Indexed: 10/24/2022]
Abstract
People who have developed a good sense of smell could experience much more happiness and pleasure, which would trigger a discussion that olfactory disorder might correlate with the pathogenesis of major depressive disorder (MDD). Similar experiments conducted on rats have confirmed that nerve damage of olfactory pathway can induce a series of depression-like changes, including behavior, neurobiochemistry, and neuroimmunity. These changes will recover progressively with anti-depression treatment. While in similar studies on human beings, olfactory dysfunction has been found in people suffering from depression. This review briefly discusses the correlation between olfactory deficits and clinical traits of depression in different dimensions, such as the severity, duration and cognitive impairment of depression. Improving olfactory function may be expected to be a potential antidepressant therapy.
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Affiliation(s)
- Fang Wang
- Shanghai Yangpu Mental Health Center, Shanghai, 200093, China; Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Xiaohui Wu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Jerry Gao
- Yennora Public School, NSW, 2161, Australia
| | - Yongchao Li
- Shanghai Yangpu Mental Health Center, Shanghai, 200093, China
| | - Yuncheng Zhu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Yiru Fang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China; CAS Center for Excellence in Brain Science and Intelligence Technology, 200031, China; Shanghai Key Laboratory of Psychotic disorders, Shanghai, 201108, China.
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29
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Machado DG, Lara MVS, Dobler PB, Almeida RF, Porciúncula LO. Caffeine prevents neurodegeneration and behavioral alterations in a mice model of agitated depression. Prog Neuropsychopharmacol Biol Psychiatry 2020; 98:109776. [PMID: 31707092 DOI: 10.1016/j.pnpbp.2019.109776] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/15/2019] [Accepted: 10/02/2019] [Indexed: 12/20/2022]
Abstract
Longitudinal and some experimental studies have showed the potential of caffeine to counteract some depressive behaviors and synaptic dysfunctions. In this study, we investigated the potential of caffeine in preventing behavioral outcomes, neurodegeneration and synaptic proteins alterations in a mice model of agitated depression by bilateral olfactory bulbectomy (OB). For this purpose, bulbectomized mice received caffeine (0.3 g/L and 1.0 g/L, drinking water), during the active cycle, for seven weeks (two before the surgery and throughout five weeks after OB). Caffeine prevented OB-induced hyperactivity and recognition memory impairment and rescue self care and motivational behavior. In the frontal cortex, bulbectomized mice presented increase in the adenosine A1 receptors (A1R) and GFAP, while adenosine A2A receptors (A2AR) increased in the hippocampus and striatum and SNAP-25 was decreased in frontal cortex and striatum. Caffeine increased A1R in the striatum of bulbectomized mice and in SHAM-water group caffeine increased A2AR in the striatum and decreased SNAP-25 in the frontal cortex. Astrogliosis observed in the polymorphic layer of the dentate gyrus of OB mice was prevented by caffeine as well as the neurodegeneration in the striatum and piriform cortex. Based on these behavioral and neurochemical evidences, caffeine confirms its efficacy in preventing neurodegeneration associated with memory impairment and may be considered as a promising therapeutic tool in the prophylaxis and/or treatment of depression.
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Affiliation(s)
- Daniele Guilhermano Machado
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Porto Alegre, RS 90035 003, Brazil.
| | - Marcus Vinicius Soares Lara
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Porto Alegre, RS 90035 003, Brazil
| | - Paula Bruna Dobler
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Porto Alegre, RS 90035 003, Brazil
| | - Roberto Farina Almeida
- Universidade Federal de Ouro Preto, Centro de Pesquisa em Ciências Biológicas, Departamento de Ciências Biológicas, Ouro Preto, MG, Brazil
| | - Lisiane O Porciúncula
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Porto Alegre, RS 90035 003, Brazil.
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30
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Maric V, Ramanathan D, Mishra J. Respiratory regulation & interactions with neuro-cognitive circuitry. Neurosci Biobehav Rev 2020; 112:95-106. [PMID: 32027875 PMCID: PMC10092293 DOI: 10.1016/j.neubiorev.2020.02.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 01/17/2020] [Accepted: 02/02/2020] [Indexed: 01/01/2023]
Abstract
It is increasingly being recognized that active control of breathing - a key aspect of ancient Vedic meditative practices, can relieve stress and anxiety and improve cognition. However, the underlying mechanisms of respiratory modulation of neurophysiology are just beginning to be elucidated. Research shows that brainstem circuits involved in the motor control of respiration receive input from and can directly modulate activity in subcortical circuits, affecting emotion and arousal. Meanwhile, brain regions involved in the sensory aspects of respiration, such as the olfactory bulb, are like-wise linked with wide-spread brain oscillations; and perturbing olfactory bulb activity can significantly affect both mood and cognition. Thus, via both motor and sensory pathways, there are clear mechanisms by which brain activity is entrained to the respiratory cycle. Here, we review evidence gathered across multiple species demonstrating the links between respiration, entrainment of brain activity and functional relevance for affecting mood and cognition. We also discuss further linkages with cardiac rhythms, and the potential translational implications for biorhythm monitoring and regulation in neuropsychiatric disorders.
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Affiliation(s)
- Vojislav Maric
- Neural Engineering and Translation Labs, Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Dhakshin Ramanathan
- Neural Engineering and Translation Labs, Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA; Department of Mental Health, VA San Diego Medical Center, San Diego, CA, USA
| | - Jyoti Mishra
- Neural Engineering and Translation Labs, Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA.
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31
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Zheng Y, Shen Y, Zhu Z, Hu H. Associations between Cadmium Exposure and Taste and Smell Dysfunction: Results from the National Health and Nutrition Examination Survey (NHANES), 2011-2014. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17030943. [PMID: 32028740 PMCID: PMC7037909 DOI: 10.3390/ijerph17030943] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 01/30/2020] [Accepted: 02/01/2020] [Indexed: 12/22/2022]
Abstract
Background: Cadmium is a ubiquitous environmental pollutant and has been associated with many adverse health outcomes. However, little is known about the effect of cadmium exposure on taste and smell dysfunction. Methods: We used the National Health and Nutrition Examination Survey (NHANES) 2011–2014 to investigate the associations between blood cadmium and taste and smell dysfunction among 5038 adults aged 40–80 years old. Taste and smell dysfunction were defined by questionnaires, examinations, or both criteria. Results: In survey weighted logistic regression models adjusting for age, gender, race/ethnicity, income-to-poverty ratio (IPR), and education, individuals with a blood cadmium level in the highest tertiles had significantly higher odds of having perceived smell dysfunction (odds ratio (OR) = 1.41, 95% confidence interval (CI): 1.08, 1.84), perceived taste dysfunction (OR = 1.48, 95% CI: 1.16, 1.89), and taste dysfunction defined by both self-reported and objectively measured data (OR = 1.46, 95% CI: 1.03, 2.07). After further adjusting for body mass index (BMI), cigarette smoking, and alcohol drinking, consistent results were observed for perceived taste dysfunction (OR = 1.49, 95% CI: 1.10, 2.00), and no significant associations were found between cadmium exposure and other outcomes. Conclusions: Our findings suggest that cadmium exposure is associated with perceived taste dysfunction.
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Affiliation(s)
- Yi Zheng
- Department of Epidemiology, College of Public Health and Health Professions and College of Medicine, University of Florida, Gainesville, FL 32610, USA;
| | - Yun Shen
- Department of Pharmaceutical Outcomes and Policy, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA;
| | - Zheng Zhu
- School of Nursing, Fudan University, Shanghai 200433, China;
| | - Hui Hu
- Department of Epidemiology, College of Public Health and Health Professions and College of Medicine, University of Florida, Gainesville, FL 32610, USA;
- Correspondence: ; Tel.: +352-294-5944
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32
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Chen B, Klarmann R, Israel M, Ning Y, Colle R, Hummel T. Difference of olfactory deficit in patients with acute episode of schizophrenia and major depressive episode. Schizophr Res 2019; 212:99-106. [PMID: 31416747 DOI: 10.1016/j.schres.2019.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/03/2019] [Accepted: 08/03/2019] [Indexed: 12/16/2022]
Abstract
UNLABELLED Aim Olfactory deficits are potential markers of early diagnosis, monitoring progress and predicting outcome in patients with schizophrenia and depression. We aimed to investigate differences in patterns and influencing factors of olfactory deficits between patients with acute episode of schizophrenia and major depressive episode (MDE). METHODS Fifty-two patients with acute episode of schizophrenia, 75 patients with unipolar MDE and 199 healthy controls were included in this retrospective study. Following a structured interview, participants underwent olfactory tests (Sniffin' Sticks), assessment of psychiatric symptoms (Positive and Negative Syndrome Scale), depressive symptoms (Hamilton Depression Rating Scale), and cognitive function (color-word test and word generation test). RESULTS Both patients with schizophrenia and MDE exhibited significant olfactory deficits, and MDE patients have poorer olfactory sensitivity than schizophrenia. Patients with MDE had a higher proportion of olfactory deficits (45.3% and 28%, respectively) but a better self-awareness (21.3% and 9.6%, respectively) than patients with schizophrenia. In patients with schizophrenia, PANSS scores was positively associated with olfactory sensitivity but negatively associated with olfactory identification, and olfactory discrimination was associated with word generation. In patients with MDE, olfactory discrimination was associated with word generation and age, but not disease severity. First-episode schizophrenia group showed significantly lower threshold scores than recurrent schizophrenia group, and first-episode MDE group had significantly lower threshold scores and higher discrimination scores than the recurrent MDE group. CONCLUSIONS Patterns and modulating factors of olfactory deficits in acute episode of schizophrenia and MDE are different, their differences should be considered when using olfactory deficits as marker in clinical practice.
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Affiliation(s)
- Ben Chen
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU, Dresden, Germany; Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China.
| | | | | | - Yuping Ning
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China
| | - Romain Colle
- INSERM UMR-1178, CESP, Université Paris-Sud, Faculté de Médecine Paris-Sud, Service Hospitalo-Universitaire de Psychiatrie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre F-94275, France
| | - Thomas Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU, Dresden, Germany
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33
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Negoias S, Chen B, Iannilli E, Ning Y, Kitzler HH, Hummel T, Krüger S. Odor-related brain hyper-reactivity in euthymic bipolar disorder: An fMRI and ERP study. Psychiatry Res 2019; 278:218-227. [PMID: 31226548 DOI: 10.1016/j.psychres.2019.06.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 10/26/2022]
Abstract
Previous studies on olfactory function in patients with bipolar disorder (BD) are limited and contradictory. The current study aimed to comprehensively analyze the olfactory function of patients with euthymic BD using psychophysical, electrophysiological and neuroimaging techniques. Twenty-one patients with BD in remission and 20 healthy controls were tested with the "Sniffin' Sticks" olfactory test. Block-design fMRI data to a pleasant and an unpleasant stimulus were acquired while recording intensity and hedonic ratings. Olfactory event-related potentials (OERP) to the same stimuli were additionally recorded. Results show no differences between patients and healthy controls in terms of self-rated olfactory function and tested olfactory domains (odor threshold, discrimination or identification) (p>0.05). Compared to healthy controls, patients showed an increased fMRI activation in multiple cortical and subcortical regions as a response to olfactory stimulation, as well as larger amplitudes of OERPs regardless of the hedonic valence of the odor. All in all, patients with euthymic BD showed a stronger central responsiveness to odorous stimuli in fMRI and OERPs despite of normal psychophysical results, indicating the probable existence of an odor-related over-reactive brain network in the remission phase of BD.
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Affiliation(s)
- Simona Negoias
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany; Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland
| | - Ben Chen
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany; Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China.
| | - Emilia Iannilli
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Yuping Ning
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China
| | - Hagen H Kitzler
- Institute of Diagnostic and Interventional Neuroradiology, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Thomas Hummel
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Stephanie Krüger
- Teaching Hospital of the Charite - Universitätsmedizin Berlin, Center for Women's Mental Health, Vivantes Humboldt Klinik, Am Nordgraben 2, 13509, Berlin, Germany
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Oleszkiewicz A, Hummel T. Whose nose does not know? Demographical characterization of people unaware of anosmia. Eur Arch Otorhinolaryngol 2019; 276:1849-1852. [PMID: 30989334 PMCID: PMC6529373 DOI: 10.1007/s00405-019-05414-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 03/21/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE For functionally anosmic subjects, the sense of smell is basically useless in daily activities-they are unlikely to detect the threatening smell of rotten food, gas or smoke, or to enjoy the flavor of food or the smell of perfumes. Although this appears very distressing, functionally anosmic subjects in our sample seemed not to be aware or bothered with impaired olfaction and enrolled for the study targeted to people with a normal sense of smell. METHODS In the large sample of 9139 subjects who declared themselves to have a normal sense of smell, we have retrospectively found a notable proportion of scores indicating functional anosmia. RESULTS When we look at the overall Sniffin' Sticks score, 0.45% of the sample was functionally anosmic and this fraction increased to 3.4% when the identification score of 8 points and below was used. We present demographical information of those subjects, who despite their inability to use smell in daily life, consider themselves healthy. CONCLUSIONS Data offer a new perspective on the importance of olfaction in daily life and supports the notion about the importance of using screening tools in clinical practice.
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Affiliation(s)
- Anna Oleszkiewicz
- Smell and Taste Center, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.
- Institute of Psychology, University of Wroclaw, ul. Dawda 1, 50527, Wroclaw, Poland.
| | - Thomas Hummel
- Smell and Taste Center, Department of Otorhinolaryngology, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany
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Rajkumar R, Dawe GS. OBscure but not OBsolete: Perturbations of the frontal cortex in common between rodent olfactory bulbectomy model and major depression. J Chem Neuroanat 2018; 91:63-100. [DOI: 10.1016/j.jchemneu.2018.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 03/02/2018] [Accepted: 04/04/2018] [Indexed: 02/08/2023]
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Negoias S, Pietsch K, Hummel T. Changes in olfactory bulb volume following lateralized olfactory training. Brain Imaging Behav 2018; 11:998-1005. [PMID: 27448159 DOI: 10.1007/s11682-016-9567-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Repeated exposure to odors modifies olfactory function. Consequently, "olfactory training" plays a significant role in hyposmia treatment. In addition, numerous studies show that the olfactory bulb (OB) volume changes in disorders associated with olfactory dysfunction. Aim of this study was to investigate whether and how olfactory bulb volume changes in relation to lateralized olfactory training in healthy people. Over a period of 4 months, 97 healthy participants (63 females and 34 males, mean age: 23.74 ± 4.16 years, age range: 19-43 years) performed olfactory training by exposing the same nostril twice a day to 4 odors (lemon, rose, eucalyptus and cloves) while closing the other nostril. Before and after olfactory training, magnetic resonance imaging (MRI) scans were performed to measure OB volume. Furthermore, participants underwent lateralized odor threshold and odor identification testing using the "Sniffin' Sticks" test battery.OB volume increased significantly after olfactory training (11.3 % and 13.1 % respectively) for both trained and untrained nostril. No significant effects of sex, duration and frequency of training or age of the subjects were seen. Interestingly, PEA odor thresholds worsened after training, while olfactory identification remained unchanged.These data show for the first time in humans that olfactory training may involve top-down process, which ultimately lead to a bilateral increase in olfactory bulb volume.
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Affiliation(s)
- S Negoias
- Smell & Taste Clinic, Department of Otorhinolaryngology, Head and Neck Surgery, Technical University Dresden, Fetscherstr. 74, 01307, Dresden, Germany. .,Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
| | - K Pietsch
- Smell & Taste Clinic, Department of Otorhinolaryngology, Head and Neck Surgery, Technical University Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - T Hummel
- Smell & Taste Clinic, Department of Otorhinolaryngology, Head and Neck Surgery, Technical University Dresden, Fetscherstr. 74, 01307, Dresden, Germany
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Rottstädt F, Han P, Weidner K, Schellong J, Wolff‐Stephan S, Strauß T, Kitzler H, Hummel T, Croy I. Reduced olfactory bulb volume in depression-A structural moderator analysis. Hum Brain Mapp 2018; 39:2573-2582. [PMID: 29493048 PMCID: PMC6866619 DOI: 10.1002/hbm.24024] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/19/2018] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Removal of the olfactory bulb (OB) leads to depression like behavior in rodents. A link between depression and olfactory function is also established in humans. We hypothesized that the human OB volume relates to depressive state and tested whether such a potential coherence is moderated by structural alterations in other brain regions. METHODS Eighty-three participants (32 patients with major depression and 51 matched healthy controls) underwent structural MR scanning. Individual OB volumes were compared between patients and controls and the impact of depression and comorbidity was analyzed with multiple regression analysis. Whole-brain voxel-based morphometry revealed structures co-varying with both depressive state and OB volume. RESULTS The OB volume of patients was significantly reduced and this reduction averaged out at 17% compared to the controls. The OB volume was correlated to the volume of the insula, superior temporal cortex, and amygdala. The independent variables of depression (β = -.37), age (β = -.25), and gender (β = -.40) explained the individual OB volume variation (R2 = .37). The correlation between OB volume and depression was moderated by volumetric reductions in a cluster including the insula and superior temporal gyrus (STG). CONCLUSIONS The OB volume relates to depression in humans and to the volume of structures which are critical for salience detection. We assume that a reduced OB volume causes diminished neural olfactory input which facilitates volume reduction in the insula and STG. The OB volume may hence constitute a factor of vulnerability to depression. Olfactory-based deep brain stimulation is discussed as a future therapeutic approach.
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Affiliation(s)
- Fabian Rottstädt
- Department of Psychosomatic Medicine and PsychotherapyTU DresdenDresdenGermany
| | - Pengfei Han
- Smell & Taste Clinic, Department of OtorhinolaryngologyTU DresdenDresdenGermany
| | - Kerstin Weidner
- Department of Psychosomatic Medicine and PsychotherapyTU DresdenDresdenGermany
| | - Julia Schellong
- Department of Psychosomatic Medicine and PsychotherapyTU DresdenDresdenGermany
| | | | - Timmy Strauß
- Department of Psychosomatic Medicine and PsychotherapyTU DresdenDresdenGermany
| | | | - Thomas Hummel
- Smell & Taste Clinic, Department of OtorhinolaryngologyTU DresdenDresdenGermany
| | - Ilona Croy
- Department of Psychosomatic Medicine and PsychotherapyTU DresdenDresdenGermany
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Chen B, Zhong X, Mai N, Peng Q, Wu Z, Ouyang C, Zhang W, Liang W, Wu Y, Liu S, Chen L, Ning Y. Cognitive Impairment and Structural Abnormalities in Late Life Depression with Olfactory Identification Impairment: an Alzheimer's Disease-Like Pattern. Int J Neuropsychopharmacol 2018; 21:640-648. [PMID: 29554341 PMCID: PMC6030850 DOI: 10.1093/ijnp/pyy016] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 03/03/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Late-life depression patients are at a high risk of developing Alzheimer's disease, and diminished olfactory identification is an indicator in early screening for Alzheimer's disease in the elderly. However, whether diminished olfactory identification is associated with risk of developing Alzheimer's disease in late-life depression patients remains unclear. METHODS One hundred and twenty-five late-life depression patients, 50 Alzheimer's disease patients, and 60 normal controls were continuously recruited. The participants underwent a clinical evaluation, olfactory test, neuropsychological assessment, and neuroimaging assessment. RESULTS The olfactory identification impairment in late-life depression patients was milder than that in Alzheimer's disease patients. Diminished olfactory identification was significantly correlated with worse cognitive performance (global function, memory language, executive function, and attention) and reduced grey matter volume (olfactory bulb and hippocampus) in the late-life depression patients. According to a multiple linear regression analysis, olfactory identification was significantly associated with the memory scores in late-life depression group (B=1.623, P<.001). The late-life depression with olfactory identification impairment group had worse cognitive performance (global, memory, language, and executive function) and more structural abnormalities in Alzheimer's disease-related regions than the late-life depression without olfactory identification impairment group, and global cognitive function and logical memory in the late-life depression without olfactory identification impairment group was intact. Reduced volume observed in many areas (hippocampus, precuneus, etc.) in the Alzheimer's disease group was also observed in late-life depression with olfactory identification impairment group but not in the late-life depression without olfactory identification impairment group. CONCLUSION The patterns of cognitive impairment and structural abnormalities in late-life depression with olfactory identification impairment patients were similar to those in Alzheimer's disease; olfactory identification may help identify late-life depression patients who are at a high risk of developing Alzheimer's disease.
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Affiliation(s)
- Ben Chen
- Department of Psychiatrym, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Xiaomei Zhong
- Department of Psychiatrym, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China,Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Naikeng Mai
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Qi Peng
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Zhangying Wu
- Department of Psychiatrym, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Cong Ouyang
- Department of Psychiatrym, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Weiru Zhang
- Department of Psychiatrym, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | | | - Yujie Wu
- Department of Psychiatrym, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Sha Liu
- Department of Radiology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Lijian Chen
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China
| | - Yuping Ning
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Huiai Hospital, Guangzhou City, China,Correspondence: Ning Yuping, PhD, no. 36, Mingxin Road, Liwan District, Guangzhou City, China ()
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Nwulia EA, Rai N, Sartip K, Hipolito MS, McLean CK, Flanagan K, Hamilton F, Lambert S, Le HN, VanMeter J, Kapetanovic S. A Pilot Study of Reduced Olfactory Bulb Volume as a Marker of PTSD in Childhood Trauma-Exposed Adult HIV-Infected Patients. J Trauma Stress 2017; 30:537-544. [PMID: 29077998 PMCID: PMC5679296 DOI: 10.1002/jts.22222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 06/22/2017] [Accepted: 06/30/2017] [Indexed: 12/25/2022]
Abstract
Evidence suggests that olfactory bulb (OB), a key structure in odor processing, may also be involved in mechanisms of traumatic stress. In animals, chronic stress reduces OB plasticity, and olfactory bulbectomy results in stress-enhanced startle reflex and autonomic dysregulation. However, OB morphometry has not been adequately studied in the development of stress disorders following childhood trauma in humans. The researchers conducted a pilot study evaluating the relationships between OB volume, childhood trauma, and lifetime posttraumatic stress disorder (PTSD) in a sample of 16 HIV-positive individuals, 13 of whom were exposed to childhood trauma of 9 developed PTSD. Participants were recruited from a larger cohort of inner city-dwelling HIV-positive populations in Washington, DC. Mean OB volumes were significantly reduced when PTSD and non-PTSD groups were compared, p = .019, as well as when trauma-exposed PTSD-positive and trauma-exposed PTSD-negative groups were compared, p = .008. No significant difference was observed when trauma-exposed and nonexposed participants were compared. The association between PTSD and right OB volume remained strong p = 0.002 after adjusting for group differences in sex, age, depression, hippocampal volume, and total intracranial volume. Because this study is limited by small sample size, further elucidation of relationships between OB, trauma, and PTSD should be investigated in larger cross-sectional and prospective studies and in diverse cohorts.
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Affiliation(s)
- Evaristus A. Nwulia
- Department of Psychiatry and Behavioral Sciences, Howard University, Washington, DC, USA
| | - Narayan Rai
- Department of Psychiatry and Behavioral Sciences, Howard University, Washington, DC, USA
| | - Kamyar Sartip
- Department of Radiology, Howard University, Washington, DC, USA
| | | | - Charlee K. McLean
- Department of Psychiatry and Behavioral Sciences, Howard University, Washington, DC, USA
| | - Kyla Flanagan
- Family and Medical Counseling Service, Inc., Washington, DC, USA
| | - Flora Hamilton
- Family and Medical Counseling Service, Inc., Washington, DC, USA
| | - Sharon Lambert
- Department of Psychology, George Washington University, Washington, DC, USA
| | - Huynh-Nhu Le
- Department of Psychology, George Washington University, Washington, DC, USA
| | - John VanMeter
- Department of Neurology, Center for Functional and Molecular Imaging, Georgetown University Medical Center, Washington, DC, USA
| | - Suad Kapetanovic
- Department of Psychiatry, University of Southern California, Los Angeles, California, USA
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Takahashi T, Nishikawa Y, Yücel M, Whittle S, Lorenzetti V, Walterfang M, Sasabayashi D, Suzuki M, Pantelis C, Allen NB. Olfactory sulcus morphology in patients with current and past major depression. Psychiatry Res Neuroimaging 2016; 255:60-65. [PMID: 27526191 DOI: 10.1016/j.pscychresns.2016.07.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/04/2016] [Accepted: 07/27/2016] [Indexed: 02/08/2023]
Abstract
Olfactory deficits have been reported in major depressive disorder (MDD). However, it remains largely unknown whether MDD is associated with abnormalities in olfactory sulcus morphology, a potential marker of olfactory system development. This magnetic resonance imaging study investigated the length and depth of the olfactory sulcus in 29 currently depressed patients, 27 remitted depressed patients, and 33 age- and gender-matched healthy control subjects. Both current and remitted MDD patients had significantly shallower olfactory sulci bilaterally as compared with controls. Only for male subjects, the right olfactory sulcus was significantly shorter in remitted MDD patients than in controls. The right sulcus depth was negatively correlated with number of depressive episodes in the entire MDD group and with residual depressive symptoms in the remitted MDD group. Medication status, presence of melancholia, and comorbidity with anxiety disorders did not affect the sulcus morphology. These findings suggest that abnormality of the olfactory sulcus morphology, especially its depth, may be a trait-related marker of vulnerability to major depression.
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Affiliation(s)
- Tsutomu Takahashi
- Departments of Neuropsychiatry, University of Toyama, Toyama, Japan.
| | - Yumiko Nishikawa
- Departments of Neuropsychiatry, University of Toyama, Toyama, Japan
| | - Murat Yücel
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne and Melbourne Health, Victoria, Australia; Brain and Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, School of Psychological Sciences, Monash University, Victoria, Australia
| | - Sarah Whittle
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne and Melbourne Health, Victoria, Australia; ORYGEN Youth Health Research Centre, Centre for Youth Mental Health, University of Melbourne, Victoria, Australia
| | - Valentina Lorenzetti
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne and Melbourne Health, Victoria, Australia; Brain and Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, School of Psychological Sciences, Monash University, Victoria, Australia
| | - Mark Walterfang
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne and Melbourne Health, Victoria, Australia; Neuropsychiatry Unit, Royal Melbourne Hospital, Victoria, Australia; Florey Institute of Neuroscience and Mental Health, Victoria, Australia
| | | | - Michio Suzuki
- Departments of Neuropsychiatry, University of Toyama, Toyama, Japan
| | - Christos Pantelis
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne and Melbourne Health, Victoria, Australia; Florey Institute of Neuroscience and Mental Health, Victoria, Australia
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Olfaction as a marker for depression. J Neurol 2016; 264:631-638. [DOI: 10.1007/s00415-016-8227-8] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 07/01/2016] [Accepted: 07/02/2016] [Indexed: 12/29/2022]
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Zhu R, Yang T, Kobeissy F, Mouhieddine TH, Raad M, Nokkari A, Gold MS, Wang KK, Mechref Y. The Effect of Chronic Methamphetamine Exposure on the Hippocampal and Olfactory Bulb Neuroproteomes of Rats. PLoS One 2016; 11:e0151034. [PMID: 27082425 PMCID: PMC4833297 DOI: 10.1371/journal.pone.0151034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 02/23/2016] [Indexed: 01/23/2023] Open
Abstract
Nowadays, drug abuse and addiction are serious public health problems in the USA. Methamphetamine (METH) is one of the most abused drugs and is known to cause brain damage after repeated exposure. In this paper, we conducted a neuroproteomic study to evaluate METH-induced brain protein dynamics, following a two-week chronic regimen of an escalating dose of METH exposure. Proteins were extracted from rat brain hippocampal and olfactory bulb tissues and subjected to liquid chromatography-mass spectrometry (LC-MS/MS) analysis. Both shotgun and targeted proteomic analysis were performed. Protein quantification was initially based on comparing the spectral counts between METH exposed animals and their control counterparts. Quantitative differences were further confirmed through multiple reaction monitoring (MRM) LC-MS/MS experiments. According to the quantitative results, the expression of 18 proteins (11 in the hippocampus and 7 in the olfactory bulb) underwent a significant alteration as a result of exposing rats to METH. 13 of these proteins were up-regulated after METH exposure while 5 were down-regulated. The altered proteins belonging to different structural and functional families were involved in processes such as cell death, inflammation, oxidation, and apoptosis.
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Affiliation(s)
- Rui Zhu
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States of America
| | - Tianjiao Yang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States of America
| | - Firas Kobeissy
- Department of Psychiatry, Center for Neuroproteomics and Biomarkers Research, University of Florida, Gainesville, FL, United States of America
| | - Tarek H. Mouhieddine
- Faculty of Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Mohamad Raad
- Faculty of Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Amaly Nokkari
- Faculty of Medicine, Department of Biochemistry and Molecular Genetics, American University of Beirut Medical Center, Beirut, Lebanon
| | - Mark S. Gold
- Department of Psychiatry, Center for Neuroproteomics and Biomarkers Research, University of Florida, Gainesville, FL, United States of America
| | - Kevin K. Wang
- Department of Psychiatry, Center for Neuroproteomics and Biomarkers Research, University of Florida, Gainesville, FL, United States of America
- * E-mail: (YM); (KKW)
| | - Yehia Mechref
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States of America
- * E-mail: (YM); (KKW)
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