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Cai L, Argunşah AÖ, Damilou A, Karayannis T. A nasal chemosensation-dependent critical window for somatosensory development. Science 2024; 384:652-660. [PMID: 38723089 DOI: 10.1126/science.adn5611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 04/05/2024] [Indexed: 05/31/2024]
Abstract
Nasal chemosensation is considered the evolutionarily oldest mammalian sense and, together with somatosensation, is crucial for neonatal well-being before auditory and visual pathways start engaging the brain. Using anatomical and functional approaches in mice, we reveal that odor-driven activity propagates to a large part of the cortex during the first postnatal week and enhances whisker-evoked activation of primary whisker somatosensory cortex (wS1). This effect disappears in adult animals, in line with the loss of excitatory connectivity from olfactory cortex to wS1. By performing neonatal odor deprivation, followed by electrophysiological and behavioral work in adult animals, we identify a key transient regulation of nasal chemosensory information necessary for the development of wS1 sensory-driven dynamics and somatosensation. Our work uncovers a cross-modal critical window for nasal chemosensation-dependent somatosensory functional maturation.
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Affiliation(s)
- Linbi Cai
- Laboratory of Neural Circuit Assembly, Brain Research Institute (HiFo), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- Neuroscience Center Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Ali Özgür Argunşah
- Laboratory of Neural Circuit Assembly, Brain Research Institute (HiFo), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- Neuroscience Center Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Angeliki Damilou
- Laboratory of Neural Circuit Assembly, Brain Research Institute (HiFo), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- Neuroscience Center Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Theofanis Karayannis
- Laboratory of Neural Circuit Assembly, Brain Research Institute (HiFo), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- Neuroscience Center Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- University Research Priority Program (URPP), Adaptive Brain Circuits in Development and Learning (AdaBD), University of Zurich, CH-8057 Zurich, Switzerland
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Juratli JH, Garefis K, Konstantinidis I, Hummel T. Trigeminal function in patients with COVID-associated olfactory loss. Eur Arch Otorhinolaryngol 2024; 281:2403-2411. [PMID: 38127097 DOI: 10.1007/s00405-023-08391-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023]
Abstract
PURPOSE Olfactory dysfunction (OD) can be a long-term consequence of various viral infections, including COVID-19. Dysfunction includes hyposmia/anosmia and parosmia (odor distortions). Interactions of the virus with the olfactory nerve have been extensively researched, but little is known about the interactions of the intranasal trigeminal nerve system in modulating this sensory loss. METHODS We investigated intranasal trigeminal function across COVID-19 OD patients with and without parosmia compared to normosmic controls, to determine whether (1) post-viral hyposmia and/or (2) post-viral hyposmia with parosmia is associated with altered trigeminal function. OD patients (n = 27) were tested for olfactory function using the extended Sniffin' Sticks olfactory test and for trigeminal function through three methods-odor lateralization, subjective ratings of nasal patency, and ammonium vapor pain intensity ratings. This group was subsequently compared to controls, normosmic subjects (n = 15). RESULTS Our findings revealed that post-COVID OD patients without parosmia experienced decreased sensitivity in ammonium vapor pain intensity ratings and odor lateralization scores-but similar nasal patency ratings-compared to normosmic controls. There were no significant differences in trigeminal function between OD patients with and without parosmia. CONCLUSIONS Based on our results, we conclude that the trigeminal nerve dysfunction may partially explain post-viral OD, but does not seem to be a major factor in the generation of parosmia pathophysiology.
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Affiliation(s)
- J H Juratli
- Smell and Taste Clinic, Department of Otorhinolaryngology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
| | - K Garefis
- 2nd Academic ORL, Head and Neck Surgery Department, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - I Konstantinidis
- 2nd Academic ORL, Head and Neck Surgery Department, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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Park HJ, Auh QS. Age and sex differences in comorbidities in adult temporomandibular disorders: A cross-sectional study using Korea National Health and Nutrition Examination Survey (KNHANES). PLoS One 2024; 19:e0296378. [PMID: 38166052 PMCID: PMC10760688 DOI: 10.1371/journal.pone.0296378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 12/11/2023] [Indexed: 01/04/2024] Open
Abstract
OBJECTIVES To investigate the relationship between Temporomandibular disorder (TMD) and associated comorbidities in groups matched according to age and sex. METHODS Using data from the cross-sectional fifth Korea National Health and Nutrition Examination Survey (KNHANES). Of the 25,534 eligible KNHANES, 17,762 adults aged ≥19 years who responded to survey questionnaire on TMD and comorbidities. Subjects were classified into eight groups according to age and sex. Logistic regression analyses were performed to evaluate the association between TMD and comorbidities according to age and sex. RESULTS Of the enrolled participants, 2,107 (11.86%) complained of ≥1 TMD symptoms. In all groups, odds ratios (ORs) for prevalence of TMD were >1 in those with tinnitus. Rhinitis was closely associated with TMD in 6 groups. ORs for TMD with comorbidities according to age and sex were as follows: hypertension, men aged 50-64 years (OR 0.62; CI 0.41-0.94); ischemic heart disease, men aged 35-49 years (4.38; 1.54-12.47); osteoarthritis, women aged 50-64 years (1.38; 1.03-1.86); diabetes mellitus, men aged 35-49 years (0.21; 0.05-0.88); depression, men aged 50-64 years (1.68; 1.00-2.83), women aged 35-49 years (1.39; 1.05-1.85) and women aged 65-80 years (2.01; 1.46-2.77); migraine, men aged 50-64 years (1.60; 1.14-2.25), women aged d35-49 years (1.44; 1.14-1.81) and women aged 35-49 years (1.43; 1.07-1.90); cold hypersensitivity in the hands and feet, men aged 19-34 years (1.64; 1.05-2.58), men aged 35-49 years (1.68; 1.04-2.70), men aged 65-80 years (1.74; 1.09-2.75) and women aged 35-49 years (1.45; 1.15-1.84); olfaction disorder, men aged 50-64 years (2.49; 1.39-4.43); voice disorder, men aged 50-64 years (2.25; 1.28-3.96) and women aged 65-80 years (1.69; 1.09-2.63). CONCLUSIONS This study confirmed that the types and effects of comorbidities related to prevalence of TMD may differ according to the patient's age and sex and this result will increase the predictability of the onset of TMD.
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Affiliation(s)
- Hye-Ji Park
- Department of Oral Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Q-Schick Auh
- Department of Oral Medicine, Kyung Hee University College of Dentistry, Kyung Hee University Medical Center, Seoul, Korea
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Kryukov AI, Kunelskaya NL, Zaoeva ZO, Baybakova EV, Chugunova MA, Tovmasyan AS, Panasov SA, Yanyushkina ES, Manaenkova EA, Nikitkina YY, Panova TN, Kishinevskii AE. [Features of olfactory impairment connected with trigeminal nerve system]. Vestn Otorinolaringol 2024; 89:33-39. [PMID: 38805461 DOI: 10.17116/otorino20248902133] [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: 05/30/2024]
Abstract
Data on the state of sense of smell in patients who had a new coronavirus infection caused by the SARS-CoV-2 virus are currently reduced because of the impairment of the olfactory nerve system. There are practically no results in studies of disorders in the trigeminal nerve system. OBJECTIVE Qualitative assessment of olfactory disorders after COVID-19 according to the system of olfactory and trigeminal nerves with a targeted assessment of the functional component of olfactory disorders. MATERIAL AND METHODS We examined 40 patients aged 19 to 66 who had a coronavirus infection. All patients underwent neurological, otorhinolaryngological examinations, olfactometry, filled out the hospital anxiety and depression scale. RESULTS Anosmia was diagnosed in 5 (12.5%) patients, hyposmia in 21 (52.5%) patients, and normosmia in 14 (35%) patients. Formed: the 1st group - 14 patients (35%) with normogram according to olfactometry; the 2nd group - 26 patients (65%) with anosmia/hyposmia. In the 1st group, disorders of the anxiety-depressive spectrum were significantly more common. In the 2nd group, a low identification of odors was found, lying in the spectrum of fresh, sharp, unpleasant, irritating, compared with sweet and pleasant or neutral, which indicates a predominant lesion of the trigeminal system. CONCLUSION In patients with complaints of impaired sense of smell after undergoing COVID-19, the possible functional nature of anosmia/hyposmia should be taken into account, which requires the referral of such patients to psychotherapeutic specialists, and the possible entry of olfactory disorders into the 'trigeminal' spectrum.
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Affiliation(s)
- A I Kryukov
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - N L Kunelskaya
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - Z O Zaoeva
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - E V Baybakova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - M A Chugunova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - A S Tovmasyan
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - S A Panasov
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - E S Yanyushkina
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - E A Manaenkova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - Ya Yu Nikitkina
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - T N Panova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - A E Kishinevskii
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
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Genovese F, Xu J, Tizzano M, Reisert J. Quantifying Peripheral Modulation of Olfaction by Trigeminal Agonists. J Neurosci 2023; 43:7958-7966. [PMID: 37813571 PMCID: PMC10669757 DOI: 10.1523/jneurosci.0489-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 08/15/2023] [Accepted: 09/06/2023] [Indexed: 10/17/2023] Open
Abstract
In the mammalian nose, two chemosensory systems, the trigeminal and the olfactory mediate the detection of volatile chemicals. Most odorants are able to activate the trigeminal system, and vice versa, most trigeminal agonists activate the olfactory system as well. Although these two systems constitute two separate sensory modalities, trigeminal activation modulates the neural representation of an odor. The mechanisms behind the modulation of olfactory response by trigeminal activation are still poorly understood. We addressed this question by looking at the olfactory epithelium (OE), where olfactory sensory neurons (OSNs) and trigeminal sensory fibers co-localize and where the olfactory signal is generated. Our study was conducted in a mouse model. Both sexes, males and females, were included. We characterize the trigeminal activation in response to five different odorants by measuring intracellular Ca2+ changes from primary cultures of trigeminal neurons (TGNs). We also measured responses from mice lacking TRPA1 and TRPV1 channels known to mediate some trigeminal responses. Next, we tested how trigeminal activation affects the olfactory response in the olfactory epithelium using electro-olfactogram (EOG) recordings from wild-type (WT) and TRPA1/V1-knock out (KO) mice. The trigeminal modulation of the olfactory response was determined by measuring responses to the odorant, 2-phenylethanol (PEA), an odorant with little trigeminal potency after stimulation with a trigeminal agonist. Trigeminal agonists induced a decrease in the EOG response to PEA, which depended on the level of TRPA1 and TRPV1 activation induced by the trigeminal agonist. This suggests that trigeminal activation can alter odorant responses even at the earliest stage of the olfactory sensory transduction.SIGNIFICANCE STATEMENT Most odorants reaching the olfactory epithelium (OE) can simultaneously activate olfactory and trigeminal systems. Although these two systems constitute two separate sensory modalities, trigeminal activation can alter odor perception. Here, we analyzed the trigeminal activity induced by different odorants proposing an objective quantification of their trigeminal potency independent from human perception. We show that trigeminal activation by odorants reduces the olfactory response in the olfactory epithelium and that such modulation correlates with the trigeminal potency of the trigeminal agonist. These results show that the trigeminal system impacts the olfactory response from its earliest stage.
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Affiliation(s)
| | - Jiang Xu
- Monell Chemical Senses Center, Philadelphia, Pennsylvania 19104
| | - Marco Tizzano
- Monell Chemical Senses Center, Philadelphia, Pennsylvania 19104
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Schepens EJA, Kamalski DMA, Stegeman I. A Comparative Analysis of the Incidence, Severity and Duration of Smell and Taste Loss in COVID-19 Cases Versus Non-COVID-19 Cases: A Longitudinal Cohort Study. J Clin Med 2023; 12:6267. [PMID: 37834912 PMCID: PMC10573822 DOI: 10.3390/jcm12196267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/09/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
The COVID-19 pandemic has highlighted the relevance of olfactory and gustatory disorders. However, these symptoms can also be caused by various other factors. In this study we aimed to compare the incidence, severity and duration between COVID-19 related and non-COVID-19 related smell and taste disorders. We conducted a longitudinal cohort study using data from the Dutch biobank Lifelines, which includes over 167,000 participants. The data were collected using 27 questionnaires distributed between March 2020 and May 2022. Descriptive data and the incidence of smell and taste loss in both groups were calculated. To visualize the proportion of severity rates of symptoms, a heatmap was created. A survival analysis was conducted and presented in a reversed Kaplan-Meier curve to show the probability of having persistent smell loss in both groups. The study included 235,722 participants. The incidence of smell loss was higher in the COVID-19 positive group, when compared to the COVID-19 negative group. We found varying degrees of symptom severity in COVID-19 positive cases, ranging from mild to severe, while non-COVID-19 related cases mostly reported mild symptoms. The survival outcome for smell and taste loss was 0.12 (SE 0.03, 95% CI 0.07-0.21) in COVID-19 related cases, and was 0.17 (SE 0.03, 95% CI 0.12-0.24) in cases related to other causes. This study reveals a higher incidence and severity of smell and taste loss in individuals with COVID-19 compared to non-COVID-19 related cases. However, non-COVID-19 related smell and taste loss tend to have a longer duration.
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Affiliation(s)
- Emma J. A. Schepens
- Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (D.M.A.K.); (I.S.)
- Brain Center, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Digna M. A. Kamalski
- Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (D.M.A.K.); (I.S.)
- Brain Center, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Inge Stegeman
- Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (D.M.A.K.); (I.S.)
- Brain Center, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
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Malekmakan L, Doostkam A, Iravani K, Roozbeh J, Sookhaklari MA, Maryam pakfetrat. Comparison between olfactory training and curcumin therapy in improving olfactory dysfunction in patients with chronic kidney disease. Heliyon 2023; 9:e14478. [PMID: 36967933 PMCID: PMC10031463 DOI: 10.1016/j.heliyon.2023.e14478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 03/01/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Objective Olfactory dysfunction can be seen in chronic kidney disease (CKD) patients. We aimed to investigate the effects of olfactory training and curcumin on olfactory dysfunction in CKD patients and compare their impact with a placebo. Methods We conducted a double-blind, randomized, placebo-controlled trial in CKD patients, 2021-2022. We enrolled 60 participants in our study into three groups (curcumin, training, and control). Participants were randomized into trials and control groups and assessed using the Iran-smell identification test (Iran-SIT), a questionnaire of olfactory disorders (QOD), and a self-assessment tool. P-value < 0.05 was considered statistically significant. Results We gathered 58 participants (mean age of 56.1 ± 2.5, 56.9% men). All the tests showed that curcumin improved olfactory function after the trial, though it was significant in QOD (17.5 ± 11.8 vs. 13.1 ± 9.7, p = 0.045) and self-assessment results (8.5 ± 3.1 vs. 9.5 ± 4.0, p = 0.047). Moreover, compared to baseline, training patients experienced an increase in their olfactory function in Iran-SIT (15.3 ± 4.9 vs. 18.8 ± 2.7, p = 0.001), QOD (19.0 ± 10.4 vs. 12.2 ± 9.9, p = 0.003), and self-assessment tools (6.8 ± 1.8 vs. 8.2 ± 3.1, p = 0.027). In contrast, the olfactory function was unchanged in control in all the tests (p > 0.05). Also, the improved change of Iran-SIT and QOD scores during the trial was more significant in training compared to the curcumin group (p < 0.002). Conclusion The findings of this study indicate that olfactory training, even more than curcumin, can improve olfactory function in CKD patients. This information may help manage olfactory dysfunction in the CKD population.
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Kryukov AI, Kunel'skaya NL, Zaoeva ZO, Bajbakova EV, Chugunova MA, Vasilchenko NO, Panasov SA, Panova TN. [Involvement of the trigeminal nerve system in the sense of smell]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:7-12. [PMID: 38147376 DOI: 10.17116/jnevro20231231217] [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: 12/27/2023]
Abstract
A systematic review of literature on the issue of involvement in the sense of smell, as well as the interaction between the trigeminal and olfactory nerves, was carried out. The article discusses the features of the chemical perception systems, as well as the treatment of olfactory disorders using transcranial electrical stimulation of the trigeminal nerve.
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Affiliation(s)
- A I Kryukov
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - N L Kunel'skaya
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - Z O Zaoeva
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - E V Bajbakova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - M A Chugunova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - N O Vasilchenko
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - S A Panasov
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - T N Panova
- Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
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Oliveira WQD, Sousa PHMD, Pastore GM. Olfactory and gustatory disorders caused by COVID-19: How to regain the pleasure of eating? Trends Food Sci Technol 2022; 122:104-109. [PMID: 35039714 PMCID: PMC8755554 DOI: 10.1016/j.tifs.2022.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 01/03/2022] [Accepted: 01/10/2022] [Indexed: 12/16/2022]
Abstract
Background Recently, anosmia and ageusia (and their variations) have been reported as frequent symptoms of COVID-19. Olfactory and gustatory stimuli are essential in the perception and pleasure of eating. Disorders in sensory perception may influence appetite and the intake of necessary nutrients when recovering from COVID-19. In this short commentary, taste and smell disorders were reported and correlated for the first time with food science. Scope and approach The objective of this short commentary is to report that taste and smell disorders resulted from COVID-19 may impact eating pleasure and nutrition. It also points out important technologies and trends that can be considered and improved in future studies. Key findings and conclusions Firmer food textures can stimulate the trigeminal nerve, and more vibrant colors are able to increase the modulation of brain metabolism, stimulating pleasure. Allied to this, encapsulation technology enables the production of new food formulations, producing agonist and antagonist agents to trigger or block specific sensations. Therefore, opportunities and innovations in the food industry are wide and multidisciplinary discussions are needed.
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Affiliation(s)
- Williara Queiroz de Oliveira
- Laboratory of Bioflavours and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, 13083-862, Campinas, SP, Brazil
| | - Paulo Henrique Machado De Sousa
- Department of Food Technology, Federal University of Ceará, Av. Mister Hull, 2977, Pici University Campus, Fortaleza, Ceará, ZIP 60356-000, Brazil
| | - Glaucia Maria Pastore
- Laboratory of Bioflavours and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, 13083-862, Campinas, SP, Brazil
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Decreased activity of piriform cortex and orbitofrontal hyperactivation in Usher Syndrome, a human disorder of ciliary dysfunction. Brain Imaging Behav 2021; 16:1176-1185. [PMID: 34850367 PMCID: PMC9107447 DOI: 10.1007/s11682-021-00594-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2021] [Indexed: 11/27/2022]
Abstract
Usher syndrome (USH) is a condition characterized by ciliary dysfunction leading to retinal degeneration and hearing/vestibular loss. Putative olfactory deficits in humans have been documented at the psychophysical level and remain to be proven at the neurophysiological level. Thus, we aimed to study USH olfactory impairment using functional magnetic resonance imaging. We analyzed differences in whole-brain responses between 27 USH patients and 26 healthy participants during an olfactory detection task with a bimodal odorant (n-butanol). The main research question was whether between-group differences could be identified using a conservative whole-brain approach and in a ROI-based approach in key olfactory brain regions. Results indicated higher olfactory thresholds in USH patients, thereby confirming the hypothesis of reduced olfactory acuity. Importantly, we found decreased BOLD activity for USH patients in response to odorant stimulation in the right piriform cortex, while right orbitofrontal cortex showed increased activity. We also found decreased activity in other higher-level regions in a whole brain approach. We suggest that the hyper activation in the orbitofrontal cortex possibly occurs as a compensatory mechanism after the under-recruitment of the piriform cortex. This study suggests that olfactory deficits in USH can be objectively assessed using functional neuroimaging which reveals differential patterns of activity both in low- and high-level regions of the olfactory network. 1. Psychophysical olfactory deficits are present in Usher Syndrome, a ciliary disorder. 2. USH patients show decreased BOLD activity in the right piriform olfactory cortex; 3. USH patients show increased activity in the orbitofrontal olfactory cortex; 4. USH patients show patterns of decreased activity in high-level cortical regions; 5. Functional neuroimaging unravels USH olfactory deficits at the population level.
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Moteki H. Anosmia, trigeminal nerve dysfunction, and COVID-19: A personal account. ACTA OTO-LARYNGOLOGICA CASE REPORTS 2021. [DOI: 10.1080/23772484.2021.2002696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Hideaki Moteki
- Department of Otolaryngology-Head and Neck surgery, Aizawa Hospital, Matsumoto, Japan
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Koyama S, Kondo K, Ueha R, Kashiwadani H, Heinbockel T. Possible Use of Phytochemicals for Recovery from COVID-19-Induced Anosmia and Ageusia. Int J Mol Sci 2021; 22:8912. [PMID: 34445619 PMCID: PMC8396277 DOI: 10.3390/ijms22168912] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/10/2021] [Accepted: 08/13/2021] [Indexed: 12/14/2022] Open
Abstract
The year 2020 became the year of the outbreak of coronavirus, SARS-CoV-2, which escalated into a worldwide pandemic and continued into 2021. One of the unique symptoms of the SARS-CoV-2 disease, COVID-19, is the loss of chemical senses, i.e., smell and taste. Smell training is one of the methods used in facilitating recovery of the olfactory sense, and it uses essential oils of lemon, rose, clove, and eucalyptus. These essential oils were not selected based on their chemical constituents. Although scientific studies have shown that they improve recovery, there may be better combinations for facilitating recovery. Many phytochemicals have bioactive properties with anti-inflammatory and anti-viral effects. In this review, we describe the chemical compounds with anti- inflammatory and anti-viral effects, and we list the plants that contain these chemical compounds. We expand the review from terpenes to the less volatile flavonoids in order to propose a combination of essential oils and diets that can be used to develop a new taste training method, as there has been no taste training so far. Finally, we discuss the possible use of these in clinical settings.
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Affiliation(s)
- Sachiko Koyama
- Department of Chemistry, Indiana University, Bloomington, IN 47405, USA
| | - Kenji Kondo
- Department of Otolaryngology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan;
| | - Rumi Ueha
- Department of Otolaryngology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan;
- Swallowing Center, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Hideki Kashiwadani
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan;
| | - Thomas Heinbockel
- Department of Anatomy, College of Medicine, Howard University, Washington, DC 20059, USA
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Iravani B, Peter MG, Arshamian A, Olsson MJ, Hummel T, Kitzler HH, Lundström JN. Acquired olfactory loss alters functional connectivity and morphology. Sci Rep 2021; 11:16422. [PMID: 34385571 PMCID: PMC8361122 DOI: 10.1038/s41598-021-95968-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/02/2021] [Indexed: 11/10/2022] Open
Abstract
Removing function from a developed and functional sensory system is known to alter both cerebral morphology and functional connections. To date, a majority of studies assessing sensory-dependent plasticity have focused on effects from either early onset or long-term sensory loss and little is known how the recent sensory loss affects the human brain. With the aim of determining how recent sensory loss affects cerebral morphology and functional connectivity, we assessed differences between individuals with acquired olfactory loss (duration 7-36 months) and matched healthy controls in their grey matter volume, using multivariate pattern analyses, and functional connectivity, using dynamic connectivity analyses, within and from the olfactory cortex. Our results demonstrate that acquired olfactory loss is associated with altered grey matter volume in, among others, posterior piriform cortex, a core olfactory processing area, as well as the inferior frontal gyrus and angular gyrus. In addition, compared to controls, individuals with acquired anosmia displayed significantly stronger dynamic functional connectivity from the posterior piriform cortex to, among others, the angular gyrus, a known multisensory integration area. When assessing differences in dynamic functional connectivity from the angular gyrus, individuals with acquired anosmia had stronger connectivity from the angular gyrus to areas primary responsible for basic visual processing. These results demonstrate that recently acquired sensory loss is associated with both changed cerebral morphology within core olfactory areas and increase dynamic functional connectivity from olfactory cortex to cerebral areas processing multisensory integration.
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Affiliation(s)
- Behzad Iravani
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Nobels väg 9, 171 77, Stockholm, Sweden
| | - Moa G Peter
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Nobels väg 9, 171 77, Stockholm, Sweden
| | - Artin Arshamian
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Nobels väg 9, 171 77, Stockholm, Sweden
| | - Mats J Olsson
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Nobels väg 9, 171 77, Stockholm, Sweden
| | - Thomas Hummel
- Department of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, Dresden, Germany
| | - Hagen H Kitzler
- Institute of Diagnostic and Interventional Neuroradiology, TU Dresden, Dresden, Germany
| | - Johan N Lundström
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Nobels väg 9, 171 77, Stockholm, Sweden. .,Monell Chemical Senses Center, Philadelphia, PA, USA. .,Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA. .,Stockholm University Brain Imaging Centre, Stockholm University, Stockholm, Sweden.
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14
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Han P, Seo H, Klockow M, Yan X, Hähner A, Hummel T. Oral irritation in patients with chemosensory dysfunction. FLAVOUR FRAG J 2021. [DOI: 10.1002/ffj.3660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pengfei Han
- Smell and Taste Clinic, Department of Otorhinolaryngology Technische Universität Dresden Dresden Germany
- Faculty of Psychology Southwest University Chongqing China
| | - Han‐Seok Seo
- Department of Food Science University of Arkansas Fayetteville AR USA
| | - Marie Klockow
- Smell and Taste Clinic, Department of Otorhinolaryngology Technische Universität Dresden Dresden Germany
| | - Xiaoguang Yan
- Smell and Taste Clinic, Department of Otorhinolaryngology Technische Universität Dresden Dresden Germany
| | - Antje Hähner
- Smell and Taste Clinic, Department of Otorhinolaryngology Technische Universität Dresden Dresden Germany
| | - Thomas Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology Technische Universität Dresden Dresden Germany
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15
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Tremblay C, Frasnelli J. Olfactory-Trigeminal Interactions in Patients with Parkinson's Disease. Chem Senses 2021; 46:6218692. [PMID: 33835144 DOI: 10.1093/chemse/bjab018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Olfactory dysfunction (OD) is a highly frequent early non-motor symptom of Parkinson's disease (PD). An important step to potentially use OD for the development of early diagnostic tools of PD is to differentiate PD-related OD from other forms of non-parkinsonian OD (NPOD: postviral, sinunasal, post-traumatic, and idiopathic OD). Measuring non-olfactory chemosensory modalities, especially the trigeminal system, may allow to characterize a PD-specific olfactory profile. We here review the literature on PD-specific chemosensory alteration patterns compared with NPOD. Specifically, we focused on the impact of PD on the trigeminal system and particularly on the interaction between olfactory and trigeminal systems. As this interaction is seemingly affected in a disease-specific manner, we propose a model of interaction between both chemosensory systems that is distinct for PD-related OD and NPOD. These patterns of chemosensory impairment still need to be confirmed in prodromal PD; nevertheless, appropriate chemosensory tests may eventually help to develop diagnostic tools to identify individuals at risks for PD.
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Affiliation(s)
- Cécilia Tremblay
- Department of Anatomy, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC, G9A 5H7, Canada
| | - Johannes Frasnelli
- Department of Anatomy, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC, G9A 5H7, Canada.,Research Center, Sacré-Coeur Hospital of Montreal, 5400 Boulevard Gouin Ouest, Montréal, QC, H4J 1C5, Canada
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16
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Sbrana MF, Fornazieri MA, Bruni-Cardoso A, Avelino-Silva VI, Schechtman D, Voegels RL, Malnic B, Glezer I, de Rezende Pinna F. Olfactory Dysfunction in Frontline Health Care Professionals During COVID-19 Pandemic in Brazil. Front Physiol 2021; 12:622987. [PMID: 33767631 PMCID: PMC7985267 DOI: 10.3389/fphys.2021.622987] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/20/2021] [Indexed: 12/31/2022] Open
Abstract
Upper respiratory viral infections can decrease the sense of smell either by inflammatory restriction of nasal airflow that carries the odorant molecules or through interference in olfactory sensory neuron function. During the coronavirus disease 2019 (COVID-19) pandemic, triggered by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), worldwide reports of severe smell loss (anosmia/hyposmia) revealed a different type of olfactory dysfunction associated with respiratory virus infection. Since self-reported perception of smell is subjective and SARS-CoV-2 exposure is variable in the general population, we aimed to study a population that would be more homogeneously exposed to the virus. Here, we investigated the prevalence of olfactory loss in frontline health professionals diagnosed with COVID-19 in Brazil, one of the major epicenters of the disease. We also analyzed the rate of olfactory function recovery and the particular characteristics of olfactory deficit in this population. A widely disclosed cross-sectional online survey directed to health care workers was developed by a group of researchers to collect data concerning demographic information, general symptoms, otolaryngological symptoms, comorbidities, and COVID-19 test results. Of the 1,376 health professionals who completed the questionnaire, 795 (57.8%) were working directly with COVID-19 patients, either in intensive care units, emergency rooms, wards, outpatient clinics, or other areas. Five-hundred forty-one (39.3%) participants tested positive for SARS-CoV-2, and 509 (37%) were not tested. Prevalence of olfactory dysfunction in COVID-19-positive subjects was 83.9% (454 of 541) compared to 12.9% (42 of 326) of those who tested negative and to 14.9% (76 of 509) of those not tested. Olfactory dysfunction incidence was higher in those working in wards, emergency rooms, and intensive care units compared to professionals in outpatient clinics. In general, remission from olfactory symptoms was frequent by the time of responses. Taste disturbances were present in 74.1% of infected participants and were significantly associated with hyposmia. In conclusion, olfactory dysfunction is highly correlated with exposure to SARS-CoV-2 in health care professionals, and remission rates up to 2 weeks are high.
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Affiliation(s)
- Mariana Ferreira Sbrana
- Department of Otorhinolaryngology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marco Aurélio Fornazieri
- Department of Clinical Surgery, Universidade Estadual de Londrina and Pontifical Catholic University of Paraná, Londrina, Brazil
| | - Alexandre Bruni-Cardoso
- Department of Biochemistry, Institute of Chemistry, Universidade de São Paulo, São Paulo, Brazil
| | - Vivian I. Avelino-Silva
- Department of Infectious and Parasitic Diseases, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Deborah Schechtman
- Department of Biochemistry, Institute of Chemistry, Universidade de São Paulo, São Paulo, Brazil
| | - Richard Louis Voegels
- Department of Otorhinolaryngology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Bettina Malnic
- Department of Biochemistry, Institute of Chemistry, Universidade de São Paulo, São Paulo, Brazil
| | - Isaias Glezer
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Fabio de Rezende Pinna
- Department of Otorhinolaryngology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Lötsch J, Hummel T. Data Science-Based Analysis of Patient Subgroup Structures Suggest Effects of Rhinitis on All Chemosensory Perceptions in the Upper Airways. Chem Senses 2021; 46:6075427. [PMID: 33421076 DOI: 10.1093/chemse/bjab001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Viral rhinitis contributes significantly to olfactory dysfunction, but it is unclear how many patients have other chemosensory symptoms in addition to olfactory loss. This was addressed in the present reanalysis of data previously published in Pellegrino R, Walliczek-Dworschak U, Winter G, Hull D, Hummel T. 2017. Investigation of chemosensitivity during and after an acute cold. Int Forum Allergy Rhinol. 7(2):185-191, using unsupervised and supervised machine-learning methods. Fifty-eight patients with acute rhinitis and 59 healthy controls were assessed for orthonasal and retronasal olfactory function, taste, and intranasal trigeminal sensitivity. Unsupervised analysis showed that during rhinitis, clinical scores of olfactory function, expressed as threshold, discrimination, identification (TDI) values, were trimodally distributed. Two minor modes were separated from the main mode at TDI = 30.5, which corresponds to the established limit of hyposmia. This trimodal distribution was not observed after the rhinitis subsided. Olfactory function was not significantly impaired in 40% of all rhinitis patients, whereas it was transiently impaired in 59%. For this group, supervised machine-learning algorithms could be trained with information on retronasal olfactory function, gustatory function, and trigeminal sensitivity to assign patients to subgroups based on orthonasal olfactory function with a balanced classification accuracy of 64-65%. The ability to recognize patients with olfactory loss based on retronasal olfactory function as well as gustatory function and trigeminal sensitivity suggests in turn that these modalities are affected by rhinitis. However, the only modest accuracy at which this information allowed to reproduce the olfactory diagnosis indicated they are involved in the symptomatology of rhinitis to a lesser extent compared with the orthonasal olfactory function.
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Affiliation(s)
- Jörn Lötsch
- Institute of Clinical Pharmacology, Goethe University, Frankfurt am Main, Germany.,Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Frankfurt am Main, Germany
| | - Thomas Hummel
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
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18
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Sofko C, Tremont G, Tan JE, Westervelt H, Ahern DC, Menard W, Phillips KA. Olfactory and Neuropsychological Functioning in Olfactory Reference Syndrome. PSYCHOSOMATICS 2020; 61:261-267. [PMID: 32107040 PMCID: PMC7211111 DOI: 10.1016/j.psym.2019.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 12/20/2019] [Accepted: 12/23/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Olfactory reference syndrome (ORS) is an underrecognized, understudied, and often severe psychiatric disorder characterized by a prominent and distressing or impairing preoccupation with a false belief of emitting an offensive body odor. As this condition has only recently been recognized in the International Classification of Diseases (the 11th Edition), no empirical evidence exists about the underlying features and etiology of the disorder. OBJECTIVE To examine the neuropsychological and olfactory functioning of individuals with ORS and address whether there is central nervous system or sensory dysfunction associated with the condition. METHODS In this preliminary investigation, 9 consecutive participants with ORS completed a structured clinical interview and neuropsychological and olfaction evaluations. RESULTS A proportion of individuals with ORS displayed deficits in aspects of cognitive functioning (i.e., processing speed, executive functioning, recognition memory bias for ORS-related words), olfaction functioning (i.e., odor detection and discrimination), and emotional processing. CONCLUSIONS Based on these preliminary findings of cognitive, olfaction, and emotional processing deficits in individuals with ORS, further neuropsychological and olfaction studies are needed that better characterize this understudied patient group and address this study's limitations.
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Affiliation(s)
- Channing Sofko
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI; Department of Psychiatry, Rhode Island Hospital, Providence, RI; Department of Psychiatry, The Miriam Hospital, Providence, RI; Division of Mental Health and Behavioral Sciences, Bay Pines Veterans Affairs Health Care System, Bay Pines, Florida.
| | - Geoffrey Tremont
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI; Department of Psychiatry, Rhode Island Hospital, Providence, RI
| | - Jing Ee Tan
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI; Department of Psychiatry, Rhode Island Hospital, Providence, RI; Division of Neurology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Holly Westervelt
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI; Department of Psychiatry, Rhode Island Hospital, Providence, RI; Department of Neurology, Vanderbilt University Medical Center, Nashville, TN
| | - David C Ahern
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI; Department of Psychiatry, The Miriam Hospital, Providence, RI
| | - William Menard
- Department of Psychiatry, Rhode Island Hospital, Providence, RI; Department of Neurology, Butler Hospital, Providence, RI
| | - Katharine A Phillips
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI; Department of Psychiatry, Rhode Island Hospital, Providence, RI; Department of Psychiatry, Weill Cornell Medical College, New York, NY; Department of Psychiatry, New York-Presbyterian Hospital, New York, NY
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19
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Abstract
Many odors activate the intranasal chemosensory trigeminal system where they produce cooling and other somatic sensations such as tingling, burning, or stinging. Specific trigeminal receptors are involved in the mediation of these sensations. Importantly, the trigeminal system also mediates sensitivity to airflow. The intranasal trigeminal and the olfactory system are closely connected. With regard to central nervous processing, it is most interesting that trigeminal stimuli can activate the piriform cortex, which is typically viewed as the primary olfactory cortex. This suggests that interactions between the two systems may form at a relatively early stage of processing. For example, there is evidence showing that acquired olfactory loss leads to reduced trigeminal sensitivity, probably on account of the lack of interaction in the central nervous system. Decreased trigeminal sensitivity may also be responsible for changes in airflow perception, leading to the impression of congested nasal airways.
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Affiliation(s)
- Thomas Hummel
- Department of Otorhinolaryngology, Smell and Taste Clinic, Technische Universität Dresden, Dresden, Germany.
| | - Johannes Frasnelli
- Université du Québec à Trois-Rivières, Department of Anatomy, Trois-Rivières, QC, Canada
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20
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Ganjaei KG, Soler ZM, Storck KA, Rowan NR, Othieno FA, Schlosser RJ. Variability in Retronasal Odor Identification Among Patients With Chronic Rhinosinusitis. Am J Rhinol Allergy 2018; 32:424-431. [PMID: 30103620 DOI: 10.1177/1945892418793540] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Retronasal olfaction is important in flavor detection and enjoyment. The ability to identify specific individual retronasal odors may play a role in quality of life for patients with chronic rhinosinusitis (CRS). Objective To identify patterns and improve understanding of retronasal identification of individual odors in CRS patients. Methods Patients diagnosed with CRS underwent retronasal and orthonasal (Sniffin' Sticks) olfactory testing and taste testing (taste strips). Retronasal identification was tested with presentation of flavored powders on the posterior tongue. Retronasal identification for individual odors was compared with results of orthonasal and taste testing. Results Seventy participants were evaluated. Retronasal identification correlated with orthonasal identification and discrimination for most individual odors. Among all patients, cinnamon and apple were identified better retronasally and banana better orthonasally ( P < .05). Anosmics identified retronasal orange, cinnamon, mushroom, coffee, smoked ham, peach, ginger, grape, and cheese more than would be expected by chance for a forced-choice paradigm with 3 distractor items ( P < .05), and this was independent of objective taste function for most odors. Conclusion Retronasal and orthonasal identification of most odors correlate in CRS patients; however, patients with anosmia can still identify certain retronasal odors more often than expected. These odors do not appear to stimulate gustatory pathways and may involve trigeminal stimulation. Understanding preserved retronasal neural stimuli may allow providers to improve eating-related quality of life in these patients.
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Affiliation(s)
- Kimia G Ganjaei
- 1 Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina.,2 Rutgers-Robert Wood Johnson Medical School, Piscataway, New Jersey
| | - Zachary M Soler
- 1 Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina
| | - Kristina A Storck
- 1 Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina
| | - Nicholas R Rowan
- 1 Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina
| | - Florence A Othieno
- 1 Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina
| | - Rodney J Schlosser
- 1 Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina.,3 Department of Surgery, Ralph H. Johnson VA Medical Center, Charleston, South Carolina
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21
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Impaired brain response to odors in patients with varied severity of olfactory loss after traumatic brain injury. J Neurol 2018; 265:2322-2332. [DOI: 10.1007/s00415-018-9003-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/24/2018] [Accepted: 08/06/2018] [Indexed: 12/21/2022]
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22
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Tremblay C, Durand Martel P, Frasnelli J. Chemosensory perception is specifically impaired in Parkinson's disease. Parkinsonism Relat Disord 2018; 57:68-71. [PMID: 30100363 DOI: 10.1016/j.parkreldis.2018.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/27/2018] [Accepted: 08/05/2018] [Indexed: 12/01/2022]
Abstract
Patients with Parkinson's Disease (PD) exhibit a considerably diminished sense of smell. The olfactory system is intimately connected to the trigeminal system, responsible for the perception of sensations such as freshness, warmth or piquancy in odorants. Usually, olfactory impairment is associated with a similar reduction of trigeminal sensitivity. A recent study suggests that the trigeminal system is not affected in patients with PD. To test this, we evaluated perception of mixed olfactory/trigeminal stimuli in 23 patients with idiopathic PD and compared them to 22 healthy matched controls. More specifically, we evaluated the trigeminal dimensions of coolness, warmth and piquancy and the olfactory dimensions of pleasantness, familiarity and edibility of 10 mixed olfactory/trigeminal odorants using Likert scale. We show that PD patients perceive trigeminal sensations of coolness, warmth, and piquancy of odorants equally well as controls, as opposed to olfactory dimensions that are perceived significantly less compared to controls (p < 0.001). Moreover, Chi-square Tests show that equal number of participants in both groups perceive the trigeminal dimensions of odorants. Thus, we provide further evidence that the trigeminal system, as opposed to the olfactory system, is not impaired in PD patients reflecting a specific pattern of chemosensory impairment in PD.
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Affiliation(s)
- Cécilia Tremblay
- Department of Anatomy, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, G9A 5H7, Québec, Canada.
| | - Pascali Durand Martel
- Department of Internal Medecine, Neurology Service, Centre Intégré Universitaire de Santé et de Services Sociaux de la Mauricie-et-du-Centre-du-Québec (CIUSSS-MCQ), 1991 Boulevard du Carmel, Trois-Rivières, G8Z 3R9, Québec, Canada
| | - Johannes Frasnelli
- Department of Anatomy, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, G9A 5H7, Québec, Canada; Research Center, Hôpital du Sacré-Coeur, 5400 Boulevard Gouin Ouest, Montréal, H4J 1C5, Québec, Canada.
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23
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Liu J, Pinto JM, Yang L, Yao L, Miao X, Wei Y. Evaluation of idiopathic olfactory loss with chemosensory event-related potentials and magnetic resonance imaging. Int Forum Allergy Rhinol 2018; 8:1315-1322. [PMID: 29782071 PMCID: PMC6282607 DOI: 10.1002/alr.22144] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 04/08/2018] [Accepted: 04/27/2018] [Indexed: 11/08/2022]
Abstract
Background Idiopathic olfactory loss (IOL) accounts for a sizable fraction of olfactory dysfunction, but very little is known about its etiology and electrophysiological changes in the olfactory pathway. Methods We analyzed the physiology of IOL using chemosensory event‐related potentials (ERPs) (olfactory and trigeminal: oERP and tERP) and olfactory pathway magnetic resonance imaging (MRI) measured in adult patients with IOL and healthy controls. Subjective olfactory function was measured by Toyota and Takagi (T&T) olfactometry and Sniffin’ Sticks (SS). Results Olfactory function was worse in patients with IOL compared to controls (T&T, p < 0.001; SS, p < 0.001). oERPs could be evoked in 17 IOL patients. Signals in these patients showed lower amplitude in the N1 and P2 waves than controls (p < 0.05 for both), but there were no difference in latency between the 2 groups (p > 0.05). tERP were detected in all patients and controls; there were no differences in latency and nor amplitude between the 2 groups (p > 0.05). The olfactory bulb (OB) volume was significantly smaller in the IOL group than controls (p < 0.001), but there was no difference in the olfactory sulcus depth between groups (p > 0.05). Better olfactory function was associated with increasing magnitude of N1 amplitude in oERPs (p < 0.05) and increasing OB volume (p < 0.05). Conclusion IOL patients show neurophysiologic deficits and some anatomic differences compared to healthy controls.
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Affiliation(s)
- Jia Liu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jayant M Pinto
- Section of Otolaryngology-Head and Neck Surgery, Department of Surgery, The University of Chicago, Chicago, IL
| | - Ling Yang
- Central Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Linyin Yao
- Department of Otolaryngology-Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xutao Miao
- Department of Otorhinolaryngology, Beijing United Family Healthcare, Beijing, China
| | - Yongxiang Wei
- Department of Otolaryngology-Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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25
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Marin C, Laxe S, Langdon C, Berenguer J, Lehrer E, Mariño-Sánchez F, Alobid I, Bernabeu M, Mullol J. Olfactory function in an excitotoxic model for secondary neuronal degeneration: Role of dopaminergic interneurons. Neuroscience 2017; 364:28-44. [PMID: 28918258 DOI: 10.1016/j.neuroscience.2017.09.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 09/01/2017] [Accepted: 09/05/2017] [Indexed: 12/26/2022]
Abstract
Secondary neuronal degeneration (SND) occurring in Traumatic brain injury (TBI) consists in downstream destructive events affecting cells that were not or only marginally affected by the initial wound, further increasing the effects of the primary injury. Glutamate excitotoxicity is hypothesized to play an important role in SND. TBI is a common cause of olfactory dysfunction that may be spontaneous and partially recovered. The role of the glutamate excitotoxicity in the TBI-induced olfactory dysfunction is still unknown. We investigated the effects of excitotoxicity induced by bilateral N-Methyl-D-Aspartate (NMDA) OB administration in the olfactory function, OB volumes, and subventricular zone (SVZ) and OB neurogenesis in rats. NMDA OB administration induced a decrease in the number of correct choices in the olfactory discrimination tests one week after lesions (p<0.01), and a spontaneous recovery of the olfactory deficit two weeks after lesions (p<0.05). A lack of correlation between OB volumes and olfactory function was observed. An increase in SVZ neurogenesis (Ki67+ cells, PSANCAM+ cells (p<0.01) associated with an increase in OB glomerular dopaminergic immunostaining (p<0.05) were related to olfactory function recovery. The present results show that changes in OB volumes cannot explain the recovery of the olfactory function and suggest a relevant role for dopaminergic OB interneurons in the pathophysiology of recovery of loss of smell in TBI.
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Affiliation(s)
- Concepció Marin
- INGENIO, IRCE, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.
| | - Sara Laxe
- Brain Injury Unit, Guttmann-Institut-Hospital for Neurorehabilitation adscript UAB, Badalona, Barcelona, Catalonia, Spain
| | - Cristobal Langdon
- Rhinology Unit and Smell Clinic, ENT Department, Hospital Clinic, Barcelona, Catalonia, Spain; Centre for Biomedical Investigation in Respiratory Diseases (CIBERES), Spain
| | - Joan Berenguer
- Neuroradiology Department, Hospital Clinic, Barcelona, Catalonia, Spain
| | - Eduardo Lehrer
- Rhinology Unit and Smell Clinic, ENT Department, Hospital Clinic, Barcelona, Catalonia, Spain
| | - Franklin Mariño-Sánchez
- Rhinology Unit and Smell Clinic, ENT Department, Hospital Clinic, Barcelona, Catalonia, Spain; Centre for Biomedical Investigation in Respiratory Diseases (CIBERES), Spain
| | - Isam Alobid
- Rhinology Unit and Smell Clinic, ENT Department, Hospital Clinic, Barcelona, Catalonia, Spain; Centre for Biomedical Investigation in Respiratory Diseases (CIBERES), Spain
| | - Montserrat Bernabeu
- Brain Injury Unit, Guttmann-Institut-Hospital for Neurorehabilitation adscript UAB, Badalona, Barcelona, Catalonia, Spain
| | - Joaquim Mullol
- INGENIO, IRCE, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain; Rhinology Unit and Smell Clinic, ENT Department, Hospital Clinic, Barcelona, Catalonia, Spain; Centre for Biomedical Investigation in Respiratory Diseases (CIBERES), Spain
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26
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Boesveldt S, Postma EM, Boak D, Welge-Luessen A, Schöpf V, Mainland JD, Martens J, Ngai J, Duffy VB. Anosmia-A Clinical Review. Chem Senses 2017; 42:513-523. [PMID: 28531300 PMCID: PMC5863566 DOI: 10.1093/chemse/bjx025] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Anosmia and hyposmia, the inability or decreased ability to smell, is estimated to afflict 3-20% of the population. Risk of olfactory dysfunction increases with old age and may also result from chronic sinonasal diseases, severe head trauma, and upper respiratory infections, or neurodegenerative diseases. These disorders impair the ability to sense warning odors in foods and the environment, as well as hinder the quality of life related to social interactions, eating, and feelings of well-being. This article reports and extends on a clinical update commencing at the 2016 Association for Chemoreception Sciences annual meeting. Included were reports from: a patient perspective on losing the sense of smell with information on Fifth Sense, a nonprofit advocacy organization for patients with olfactory disorders; an otolaryngologist's review of clinical evaluation, diagnosis, and management/treatment of anosmia; and researchers' review of recent advances in potential anosmia treatments from fundamental science, in animal, cellular, or genetic models. As limited evidence-based treatments exist for anosmia, dissemination of information on anosmia-related health risks is needed. This could include feasible and useful screening measures for olfactory dysfunction, appropriate clinical evaluation, and patient counseling to avoid harm as well as manage health and quality of life with anosmia.
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Affiliation(s)
- Sanne Boesveldt
- Division of Human Nutrition, Wageningen University & Research, Wageningen, The Netherlands
| | - Elbrich M Postma
- Division of Human Nutrition, Wageningen University & Research, Wageningen, The Netherlands
- Smell and Taste Centre, Hospital Gelderse Vallei, PO Box 9025, 6710 HN Ede, The Netherlands
| | - Duncan Boak
- Fifth Sense, Sanderum House, 38 Oakley Road, Chino OX39 4TW, UK
| | - Antje Welge-Luessen
- Department of Otorhinolaryngology, University Hospital Basel, Petersgraben 4CH-4031 Basel, Switzerland
| | - Veronika Schöpf
- Institute of Psychology, University of Graz, Universitätsplatz 2, 8010 Graz, Austria
- BioTechMed Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Joel D Mainland
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA
- Department of Neuroscience, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA
| | - Jeffrey Martens
- Department of Pharmacology & Therapeutics, University of Florida, Gainesville, FL, USA
| | - John Ngai
- Department of Molecular & Cell Biology, University of California, Berkeley, CA 94720-3200, USA
| | - Valerie B Duffy
- Department of Allied Health Sciences, University of Connecticut, 358 Mansfield Road, Box U-101 Storrs, CT 06269-2101, USA
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Abstract
For the visual and auditory senses, an array of studies has reported on neuronal reorganization processes after sensory loss. In contrast to this, neuroplasticity has been investigated only scarcely after loss of the olfactory sense. The present review focuses on the current extent of literature on structural and functional neuroplasticity effects after loss, with a focus on magnetic resonance imaging-based studies. We also include findings on the regain of the olfactory sense, for example after successful olfactory training. Existing studies indicate that widespread structural changes beyond the level of the olfactory bulb occur in the brain after loss of the olfactory sense. Moreover, on a functional level, loss of olfactory input not only entails changes in olfaction-related brain regions but also in the trigeminal system. Existing evidence should be strengthened by future longitudinal studies, a more thorough investigation of the neuronal consequences of congenital anosmia, and the application of state-of-the-art neuroimaging methods, such as connectivity analyses and joint analyses of brain structure and function.
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Affiliation(s)
- Johanna L Reichert
- 1 Institute of Psychology, University of Graz, Graz, Austria.,2 BioTechMed, Graz, Austria
| | - Veronika Schöpf
- 1 Institute of Psychology, University of Graz, Graz, Austria.,2 BioTechMed, Graz, Austria
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Jion YI, Grosberg BM, Evans RW. Phantosmia and Migraine With and Without Headache. Headache 2016; 56:1494-1502. [DOI: 10.1111/head.12890] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 01/03/2023]
Affiliation(s)
| | - Brian M. Grosberg
- Hartford Healthcare Headache Center; Wethersfield CT USA (B.M. Grosberg)
| | - Randolph W. Evans
- Department of Neurology; Baylor College of Medicine; Houston TX USA (R.W. Evans)
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Mathew PG, Robertson CE. No Laughing Matter: Gelastic Migraine and Other Unusual Headache Syndromes. Curr Pain Headache Rep 2016; 20:32. [DOI: 10.1007/s11916-016-0560-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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den Uijl LC, Jager G, de Graaf C, Meiselman HL, Kremer S. Emotion, olfaction, and age: A comparison of self-reported food-evoked emotion profiles of younger adults, older normosmic adults, and older hyposmic adults. Food Qual Prefer 2016. [DOI: 10.1016/j.foodqual.2015.09.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Saliba J, Fnais N, Tomaszewski M, Carriere JS, Frenkiel S, Frasnelli J, Tewfik MA. The role of trigeminal function in the sensation of nasal obstruction in chronic rhinosinusitis. Laryngoscope 2016; 126:E174-8. [DOI: 10.1002/lary.25952] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Joe Saliba
- Department of Otolaryngology-Head and Neck Surgery; McGill University; Montreal Quebec Canada
| | - Naif Fnais
- Department of Otolaryngology-Head and Neck Surgery; McGill University; Montreal Quebec Canada
- Department of Otolaryngology-Head and Neck Surgery; King Saud University; Riyadh Saudi Arabia
| | - Marcel Tomaszewski
- Department of Otolaryngology-Head and Neck Surgery; McGill University; Montreal Quebec Canada
| | | | - Saul Frenkiel
- Department of Otolaryngology-Head and Neck Surgery; McGill University; Montreal Quebec Canada
| | - Johannes Frasnelli
- Research Chair for Chemosensory Neuroanatomy, Department of Anatomy; University of Quebec in Trois-Rivières; Trois-Rivières Quebec Canada
- Center for Advanced Research in Sleep Medicine; Sacré-Coeur Hospital; Montreal Quebec Canada
| | - Marc A. Tewfik
- Department of Otolaryngology-Head and Neck Surgery; McGill University; Montreal Quebec Canada
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Olfactory training induces changes in regional functional connectivity in patients with long-term smell loss. NEUROIMAGE-CLINICAL 2015; 9:401-10. [PMID: 26594622 PMCID: PMC4590718 DOI: 10.1016/j.nicl.2015.09.004] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 07/25/2015] [Accepted: 09/08/2015] [Indexed: 11/18/2022]
Abstract
Recently, olfactory training has been introduced as a promising treatment for patients with olfactory dysfunction. However, less is known about the neuronal basis and the influence on functional networks of this training. Thus, we aimed to investigate the neuroplasticity of chemosensory perception through an olfactory training program in patients with smell loss. The experimental setup included functional MRI (fMRI) experiments with three different types of chemosensory stimuli. Ten anosmic patients (7f, 3m) and 14 healthy controls (7f, 7m) underwent the same testing sessions. After a 12-week olfactory training period, seven patients (4f, 3m) were invited for follow-up testing using the same fMRI protocol. Functional networks were identified using independent component analysis and were further examined in detail using functional connectivity analysis. We found that anosmic patients and healthy controls initially use the same three networks to process chemosensory input: the olfactory; the somatosensory; and the integrative network. Those networks did not differ between the two groups in their spatial extent, but in their functional connectivity. After the olfactory training, the sensitivity to detect odors significantly increased in the anosmic group, which was also manifested in modifications of functional connections in all three investigated networks. The results of this study indicate that an olfactory training program can reorganize functional networks, although, initially, no differences in the spatial distribution of neural activation were observed.
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Demarquay G, Mauguière F. Central Nervous System Underpinnings of Sensory Hypersensitivity in Migraine: Insights from Neuroimaging and Electrophysiological Studies. Headache 2015; 56:1418-1438. [PMID: 26350583 DOI: 10.1111/head.12651] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2015] [Indexed: 01/03/2023]
Abstract
Whereas considerable data have been generated about the pathophysiology of pain processing during migraine attacks, relatively little is known about the neural basis of sensory hypersensitivity. In migraine, the term "hypersensitivity" encompasses different and probably distinct pathophysiological aspects of sensory sensitivity. During attacks, many patients have enhanced sensitivity to visual, auditory and/or olfactory stimuli, which can enhance headache while interictally, migraineurs often report abnormal sensitivity to environmental stimuli that can cause nonpainful discomfort. In addition, sensorial stimuli can influence and trigger the onset of migraine attacks. The pathophysiological mechanisms and the origin of such sensitivity (individual predisposition to develop migraine disease or consequence of repeated migraine attacks) are ill understood. Functional neuroimaging and electrophysiological studies allow for noninvasive measures of neuronal responses to external stimuli and have contributed to our understanding of mechanisms underlying sensory hypersensitivity in migraine. The purpose of this review is to present pivotal neuroimaging and neurophysiological studies that explored the basal state of brain responsiveness to sensory stimuli in migraineurs, the alterations in habituation and attention to sensory inputs, the fluctuations of responsiveness to sensory stimuli before and during migraine attacks, and the relations between sensory hypersensitivity and clinical sensory complaints.
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Affiliation(s)
- Geneviève Demarquay
- Department of Neurology, Croix-Rousse Hospital, Hospices Civils de Lyon, Lyon, France and Lyon Neuroscience Research Center (CRNL), Brain Dynamics and Cognition Team (Dycog), INSERM U1028, CNRS UMR5292, Lyon, France.
| | - François Mauguière
- Neurological Hospital Pierre Wertheimer: Functional Neurology and Epilepsy Department, Hospices Civils de Lyon and Claude Bernard Lyon1 University, Lyon, France, and Lyon Neuroscience Research Center (CRNL), Neuropain team, INSERM U1028, CNRS UMR5292, Lyon, France
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Kollndorfer K, Kowalczyk K, Frasnelli J, Hoche E, Unger E, Mueller CA, Krajnik J, Trattnig S, Schöpf V. Same same but different. Different trigeminal chemoreceptors share the same central pathway. PLoS One 2015; 10:e0121091. [PMID: 25775237 PMCID: PMC4361644 DOI: 10.1371/journal.pone.0121091] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 01/28/2015] [Indexed: 11/19/2022] Open
Abstract
Intranasal trigeminal sensations are important in everyday life of human beings, as they play a governing role in protecting the airways from harm. Trigeminal sensations arise from the binding of a ligand to various sub-types of transient receptor potential (TRP) channels located on mucosal branches of the trigeminal nerve. Which underlying neural networks are involved in the processing of various trigeminal inputs is still unknown. To target this unresolved question fourteen healthy human subjects were investigated by completing three functional magnetic resonance imaging (fMRI) scanning sessions during which three trigeminal substances, activating varying sub-types of chemoreceptors and evoking different sensations in the nose were presented: CO2, menthol and cinnamaldehyde. We identified similar functional networks responding to all stimuli: an olfactory network, a somatosensory network and an integrative network. The processing pathway of all three stimulants was represented by the same functional networks, although CO2 evokes painful but virtually odorless sensations, and the two other stimulants, menthol and cinnamaldehyde are perceived as mostly non painful with a clear olfactory percept. Therefore, our results suggest a common central processing pathway for trigeminal information regardless of the trigeminal chemoreceptor and sensation type.
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Affiliation(s)
- Kathrin Kollndorfer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
- Department of Pediatric and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Ksenia Kowalczyk
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Johannes Frasnelli
- Centre de Recherche en Neuropsychologie et Cognition, Département de Psychologie, Université de Montréal, Montréal, Canada
- Centre de Recherche, Hôpital du Sacre Coeur de Montréal, Montréal, Canada
| | - Elisabeth Hoche
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Ewald Unger
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria
| | - Christian A. Mueller
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - Jacqueline Krajnik
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Siegfried Trattnig
- High Field MR Center, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Veronika Schöpf
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
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35
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Schriever VA, Hummel T. Subjective changes in nasal patency after chewing a menthol-containing gum in patients with olfactory loss. Acta Otolaryngol 2015; 135:254-7. [PMID: 25622621 DOI: 10.3109/00016489.2014.980913] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONCLUSION The subjective increase in nasal patency after oral menthol application depends on olfactory function. In patients with relatively low olfactory sensitivity, this effect is small or absent. It was hypothesized that this may also modulate the sensation of nasal blockage. OBJECTIVE Menthol stimulates the nasal trigeminal nerve, resulting in a subjectively increased nasal airflow and patency without objectively measurable changes. Patients suffering from olfactory impairment also express a reduced nasal trigeminal sensitivity. The aim of this investigation was to examine the effect of menthol on nasal patency ratings in a group of patients suffering from olfactory dysfunction. METHODS A group of 92 patients with olfactory impairment was included in this study. Olfactory function was assessed using the 'Sniffin' Sticks.' Patients were instructed to chew a menthol-containing gum for 30 s, after which they rated the change in nasal patency on a categorical scale. RESULTS Patients who rated the change in nasal patency as pronounced scored higher on the Sniffin' Sticks olfactory test compared to patients who experienced little or no change in nasal patency after chewing the menthol-containing gum. On average, similar changes could be observed for all etiologies of olfactory impairment included in this study.
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Affiliation(s)
- Valentin A Schriever
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden , Dresden , Germany
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36
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Ahmed M, Lam JW. Migraine and nosebleed in children case series and literature review. Eur J Paediatr Neurol 2015; 19:98-101. [PMID: 25240603 DOI: 10.1016/j.ejpn.2014.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 09/04/2014] [Accepted: 09/07/2014] [Indexed: 11/19/2022]
Abstract
UNLABELLED The presence of nose bleeding during a migraine attack as a single occurrence is so far rarely reported. Therefore, we have decided to report such occurrences we have noticed to further improve and build upon possible existing knowledge of such incidences. METHOD 728 children with an average age of 11.5 years, suffering from migraine were examined for nose bleeding. All structural, trauma, coagulation and medical causes were excluded. A computer-based literature search was also conducted to identify other cases of such sort. RESULTS Eight cases (1.1%) of nose bleeding during attacks of migraine with no other known causes were identified. An additional 3 cases were identified in literature, though the presenting age was 25 years or above. CONCLUSION In our case series, nose bleeding exclusively occurred during the attacks of headaches, although it was not considerably related to aura, frequency, location or intensity of migraine attacks. The presence of nose bleeding associated with migraine is an uncommon phenomenon and its mechanism is still unknown.
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Affiliation(s)
- Mas Ahmed
- Paediatric Department, Queen's University Hospital, UK.
| | - Jocelyn W Lam
- Barts and the London School of Medicine and Dentistry, London, UK
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37
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Filiou RP, Lepore F, Bryant B, Lundstrom JN, Frasnelli J. Perception of Trigeminal Mixtures. Chem Senses 2014; 40:61-9. [DOI: 10.1093/chemse/bju064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Naka A, Wolf A, Renner B, Mueller CA. A novel device for the clinical assessment of intranasal trigeminal sensitivity. Ann Otol Rhinol Laryngol 2014; 123:428-33. [PMID: 24690981 DOI: 10.1177/0003489414527222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Despite the significance of trigeminal pathology, practical clinical tests that accurately evaluate intranasal trigeminal function are scarce. The aim of the present study is to introduce a practical procedure for the assessment of intranasal trigeminal sensitivity. METHODS We developed a device to stimulate the nasal mucosa using carbon dioxide, which is self-administered intranasally by holding down a timed button until the required sensory response has been triggered. The trigeminal sensitivity is derived from the measured administration time in conjunction with the concentration of carbon dioxide administered. Sixty-three healthy participants were used to validate the device, after which the new device was compared with a standard lateralization task in an additional 16 participants. In 20 participants, the experiment was repeated to verify test-retest reliability. RESULTS Statistical analysis showed significant consistency in administration-duration in healthy individuals, including those in the test-retest group. Those participants with higher scores in the lateralization task were found to show higher intranasal sensitivity measured by the new device. CONCLUSION Herein, we present the design and validation of a novel device for the practical assessment of intranasal trigeminal sensitivity. In this study, we demonstrate the efficacy and reliability of this device.
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Ahmed MAS, Donaldson S, Akor F, Cahill D, Akilani R. Olfactory hallucination in childhood primary headaches: Case series. Cephalalgia 2014; 35:234-9. [PMID: 24907166 DOI: 10.1177/0333102414535998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background Although olfactory hallucination (OH) has been reported in patients with primary headaches, olfactory aura has not been recognised by the International Classification of Headache Disorders (ICHD-2). In this study, we examined the frequency and characteristics of OH among children and adolescents with primary headaches. Methods 839 neurologically normal patients with primary headaches (537 migraine) were eligible for the assessment of olfactory hallucination. Headache diagnosis was based on the ICHD. Data were prospectively collected during clinic sessions and using headache diaries. Results Olfactory hallucination was reported exclusively during headache attacks by 21/839 (2.5%) patients, all of whom had migraine. The prevalence of olfactory hallucination was 3.9% among migraineurs (6.5% among those with migraine aura). Olfactory hallucination shortly followed the onset of headaches and lasted from 15 to 50 minutes. Of those with MA, 10 patients had visual aura; two had somatosensory aura; one had motor aura; and two had a combination of visual and somatosensory aura. Using the ICHD-2, both OH and migraine aura occurred in the same headache attacks. In 12/15 patients, OH occurred simultaneously with migraine aura, whereas in 3/12 patients, it preceded aura. Conclusion Our findings show that olfactory hallucination occurs in migraine and it has similarities to migraine aura.
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Affiliation(s)
- MAS Ahmed
- Department of Paediatrics, Queens Hospital, Essex, UK
| | - Sarah Donaldson
- Department of Paediatrics, Harrogate District Hospital, West Yorkshire, UK
| | - Francis Akor
- Department of Paediatrics, Queens Hospital, Essex, UK
| | - Denise Cahill
- Department of Paediatrics, Queens Hospital, Essex, UK
| | - Raed Akilani
- Department of Radiology, Queens Hospital, Essex, UK
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Lübbert M, Kyereme J, Schöbel N, Beltrán L, Wetzel CH, Hatt H. Transient receptor potential channels encode volatile chemicals sensed by rat trigeminal ganglion neurons. PLoS One 2013; 8:e77998. [PMID: 24205061 PMCID: PMC3804614 DOI: 10.1371/journal.pone.0077998] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 09/08/2013] [Indexed: 12/11/2022] Open
Abstract
Primary sensory afferents of the dorsal root and trigeminal ganglia constantly transmit sensory information depicting the individual’s physical and chemical environment to higher brain regions. Beyond the typical trigeminal stimuli (e.g. irritants), environmental stimuli comprise a plethora of volatile chemicals with olfactory components (odorants). In spite of a complete loss of their sense of smell, anosmic patients may retain the ability to roughly discriminate between different volatile compounds. While the detailed mechanisms remain elusive, sensory structures belonging to the trigeminal system seem to be responsible for this phenomenon. In order to gain a better understanding of the mechanisms underlying the activation of the trigeminal system by volatile chemicals, we investigated odorant-induced membrane potential changes in cultured rat trigeminal neurons induced by the odorants vanillin, heliotropyl acetone, helional, and geraniol. We observed the dose-dependent depolarization of trigeminal neurons upon application of these substances occurring in a stimulus-specific manner and could show that distinct neuronal populations respond to different odorants. Using specific antagonists, we found evidence that TRPA1, TRPM8, and/or TRPV1 contribute to the activation. In order to further test this hypothesis, we used recombinantly expressed rat and human variants of these channels to investigate whether they are indeed activated by the odorants tested. We additionally found that the odorants dose-dependently inhibit two-pore potassium channels TASK1 and TASK3 heterologously expressed In Xenopus laevis oocytes. We suggest that the capability of various odorants to activate different TRP channels and to inhibit potassium channels causes neuronal depolarization and activation of distinct subpopulations of trigeminal sensory neurons, forming the basis for a specific representation of volatile chemicals in the trigeminal ganglia.
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Affiliation(s)
- Matthias Lübbert
- Department of Cell Physiology, Ruhr University Bochum, Bochum, Germany
- * E-mail:
| | - Jessica Kyereme
- Department of Cell Physiology, Ruhr University Bochum, Bochum, Germany
| | - Nicole Schöbel
- Leibniz Research Centre for Working Environment and Human Factors, University of Dortmund, Dortmund, Germany
| | - Leopoldo Beltrán
- Department of Cell Physiology, Ruhr University Bochum, Bochum, Germany
| | - Christian Horst Wetzel
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Hanns Hatt
- Department of Cell Physiology, Ruhr University Bochum, Bochum, Germany
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41
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Orofacial pain and sensory characteristics of chronic patients compared with controls. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 115:e37-45. [DOI: 10.1016/j.oooo.2013.02.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 02/06/2013] [Accepted: 02/16/2013] [Indexed: 11/22/2022]
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42
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Bojanowski V, Hummel T. Retronasal perception of odors. Physiol Behav 2012; 107:484-7. [PMID: 22425641 DOI: 10.1016/j.physbeh.2012.03.001] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 03/01/2012] [Accepted: 03/02/2012] [Indexed: 11/18/2022]
Abstract
We perceive odors orthonasally during sniffing; in contrast, we perceive odors retronasally during eating when they enter the nose through the pharynx. There are clear differences between orthonasal and retronasal olfaction in neuronal processing and perception, so that these two pathways convey two distinct sensory signals. The perception of foods is based on the interaction between ortho- and retronasal smell, taste, trigeminal activation and texture, so it is difficult to investigate one of these factors in isolation. Specific clinical aspects include effects of retronasal olfaction on satiation and swallowing.
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Affiliation(s)
- Viola Bojanowski
- Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden Medical School, Fetscherstrasse 74, 01307 Dresden, Germany
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Demarquay G, Créac’h C, Peyron R. Olfactory hallucinations in primary headache disorders: Case series and literature review. A comment. Cephalalgia 2012; 32:583-4. [DOI: 10.1177/0333102411436125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
| | | | - Roland Peyron
- Centre Hospitalier et Universitaire de Saint Etienne France
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44
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Maurage P, Callot C, Philippot P, Rombaux P, de Timary P. Chemosensory event-related potentials in alcoholism: A specific impairment for olfactory function. Biol Psychol 2011; 88:28-36. [DOI: 10.1016/j.biopsycho.2011.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 03/05/2011] [Accepted: 06/13/2011] [Indexed: 11/24/2022]
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45
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Huart C, Eloy P, Collet S, Rombaux P. Chemosensory function assessed with psychophysical testing and event-related potentials in patients with atrophic rhinitis. Eur Arch Otorhinolaryngol 2011; 269:135-41. [PMID: 21717190 DOI: 10.1007/s00405-011-1670-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 06/08/2011] [Indexed: 11/30/2022]
Abstract
Atrophic rhinitis (AR) is a chronic inflammation of the nose characterized by an atrophy of the nasal mucosa. This is typically associated with an impaired sense of smell and a subjective sensation of poor nasal breathing. The aim of this study is to assess chemosensory function in patients suffering from AR using psychophysical testings and event-related potentials (ERP) responses. A cohort of nine patients was extensively studied. Eight out of nine had secondary AR sequela of a bilateral total inferior turbinectomy whereas one patient had a primary AR. All the patients had a clinical evaluation using Sniffin' Sticks test and a retro-olfaction test and an electrophysiological evaluation based upon ERPs obtained after both olfactory and trigeminal stimuli. All the patients complained of a poor nasal breathing and presented a distortion of the chemosensory function. Actually, the orthonasal psychophysical testing showed that four patients out of nine had anosmia, three out of nine had hyposmia and two out of nine were normosmic. All the patients demonstrated retro-olfaction scores inferior to the normal values. The chemosensory ERP showed that seven patients had no olfactory response whereas six had no trigeminal response. Four patients had neither olfactory nor trigeminal ERP response. In conclusion, this study demonstrates that most patients with AR secondary to a total bilateral inferior turbinectomy have a reduction of the chemosensory function measured objectively by psychophysical testings and ERP [corrected].
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Affiliation(s)
- C Huart
- Unit of Otorhinolaryngology, Cliniques Universitaires Saint-Luc, Av Hippocrate 10, 1200 Brussels, Belgium.
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Stuck B, Baja J, Lenz F, Herr R, Heiser C. Co-stimulation with an olfactory stimulus increases arousal responses to trigeminal stimulation. Neuroscience 2011; 176:442-6. [DOI: 10.1016/j.neuroscience.2011.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Revised: 01/03/2011] [Accepted: 01/05/2011] [Indexed: 10/18/2022]
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Neuland C, Bitter T, Marschner H, Gudziol H, Guntinas-Lichius O. Health-related and specific olfaction-related quality of life in patients with chronic functional anosmia or severe hyposmia. Laryngoscope 2011; 121:867-72. [PMID: 21298638 DOI: 10.1002/lary.21387] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 09/13/2010] [Accepted: 09/15/2010] [Indexed: 11/07/2022]
Abstract
OBJECTIVES/HYPOTHESIS To measure health-related and olfaction-related quality of life (QoL) in patients with permanent, severe hyposmia or functional anosmia. STUDY DESIGN A case study in a university ENT department of patients with severe olfactory dysfunction defined by Sniffin' Sticks olfactory test kit with a score for odor threshold, discrimination, and identification (TDI) < 20 and a dysfunction lasting longer than 6 months. METHODS Assessment of QoL by using the SF-36 Health Survey questionnaire and the Questionnaire for Olfactory Dysfunction (QOD). RESULTS A total of 958 patients were tested for smell disturbances from 1999 to 2009. Surveys were mailed to 527 patients who fulfilled the inclusion criteria; 280 (53%) returned completed surveys. All SF-36 domains in severely hyposmic and anosmic patients were lower than in the German normal population. Lower SF-36 QoL was found for some domains in female patients, older patients, and hyposmic patients (P < .05 for all groups). Based on the QOD, women showed more parosmia, and anosmic patients had more olfactory-related impairment (P < .05 for both); in general, higher olfactory impairment and higher parosmia score measured by QOD correlated with lower TDI values (all P < .05). Multivariate analysis revealed, for SF-36 domains, the following independent risk factors: female sex was a risk factor for bodily pain; higher age was a risk factor for physical functioning and role, bodily pain, and general health; hyposmia was a risk factor for bodily pain and mental health; QOD QoL was a risk factor for all SF-36 scales; and QOD parosmia was a risk factor for physical role (all P < .05). CONCLUSIONS QoL is severely impaired in patients with chronic severe hyposmia or anosmia. The QOD allows a more olfaction-specific assessment of QoL than the SF-36 instrument.
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Affiliation(s)
- Claudia Neuland
- Department of Otorhinolaryngology, Friedrich-Schiller-University Jena, Germany
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The neuronal correlates of intranasal trigeminal function-an ALE meta-analysis of human functional brain imaging data. ACTA ACUST UNITED AC 2009; 62:183-96. [PMID: 19913573 DOI: 10.1016/j.brainresrev.2009.11.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 10/17/2009] [Accepted: 11/04/2009] [Indexed: 11/29/2022]
Abstract
Almost every odor we encounter in daily life has the capacity to produce a trigeminal sensation. Surprisingly, few functional imaging studies exploring human neuronal correlates of intranasal trigeminal function exist, and results are to some degree inconsistent. We utilized activation likelihood estimation (ALE), a quantitative voxel-based meta-analysis tool, to analyze functional imaging data (fMRI/PET) following intranasal trigeminal stimulation with carbon dioxide (CO(2)), a stimulus known to exclusively activate the trigeminal system. Meta-analysis tools are able to identify activations common across studies, thereby enabling activation mapping with higher certainty. Activation foci of nine studies utilizing trigeminal stimulation were included in the meta-analysis. We found significant ALE scores, thus indicating consistent activation across studies, in the brainstem, ventrolateral posterior thalamic nucleus, anterior cingulate cortex, insula, precentral gyrus, as well as in primary and secondary somatosensory cortices-a network known for the processing of intranasal nociceptive stimuli. Significant ALE values were also observed in the piriform cortex, insula, and the orbitofrontal cortex, areas known to process chemosensory stimuli, and in association cortices. Additionally, the trigeminal ALE statistics were directly compared with ALE statistics originating from olfactory stimulation, demonstrating considerable overlap in activation. In conclusion, the results of this meta-analysis map the human neuronal correlates of intranasal trigeminal stimulation with high statistical certainty and demonstrate that the cortical areas recruited during the processing of intranasal CO(2) stimuli include those outside traditional trigeminal areas. Moreover, through illustrations of the considerable overlap between brain areas that process trigeminal and olfactory information; these results demonstrate the interconnectivity of flavor processing.
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Olfactory dysfunction affects thresholds to trigeminal chemosensory sensations. Neurosci Lett 2009; 468:259-63. [PMID: 19900505 DOI: 10.1016/j.neulet.2009.11.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 11/02/2009] [Accepted: 11/04/2009] [Indexed: 11/23/2022]
Abstract
Next to olfaction and gustation, the trigeminal system represents a third chemosensory system. These senses are interconnected; a loss of olfactory function also leads to a reduced sensitivity in the trigeminal chemosensory system. However, most studies so far focused on comparing trigeminal sensitivity to suprathreshold stimuli; much less data is available with regard to trigeminal sensitivity in the perithreshold range. Therefore we assessed detection thresholds for CO(2), a relatively pure trigeminal stimulus in controls and in patients with olfactory dysfunction (OD). We could show that OD patients exhibit higher detection thresholds than controls. In addition, we were able to explore the effects of different etiologies of smell loss on trigeminal detection thresholds. We could show that in younger subjects, patients suffering from olfactory loss due to head trauma are more severely impaired with regard to their trigeminal sensitivity than patients with isolated congenital anosmia. In older patients, we could not observe any differences between different etiologies, probably due to the well known age-related decrease of trigeminal sensitivity. Furthermore we could show that a betterment of the OD was accompanied by decreased thresholds. This was most evident in patients with postviral OD. In conclusion, factors such as age, olfactory status and etiology of olfactory disorder can affect responsiveness to perithreshold trigeminal chemosensory stimuli.
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