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Chao YT, Nakov A, Haehner A, Poletti S, Hummel T. Olfactory stimulation may modulate the sensation of nasal patency. Rhinology 2023; 61:24-31. [PMID: 36717267 DOI: 10.4193/rhin22.333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND The sensation of nasal patency can be induced by inhaling menthol, which predominantly produces trigeminal stimulation. It remains unclear whether olfactory stimulation can also induce or modulate the sensation of nasal patency. METHODOLOGY A total of 118 participants (normosmia: n=67, olfactory dysfunction: n=51) were exposed to four odors in a randomized order: 1) phenylethanol (PEA), 2) menthol, 3) a mixture of PEA and menthol, 4) nearly odorless propylene glycol. The odors were presented by nasal clips. After the nasal clip had been removed, the participants rated relative nasal patency (RNP) from - 50 to +50, and their peak nasal inspiratory flow (PNIF) was measured. Repeated measures analysis of variance was used to examine the difference of RNP and PNIF among the four conditions and the influence of olfactory function. RESULTS The RNPs, other than PNIFs, differed between the four conditions. Menthol induced the highest RNP, followed by the mixed solution, PEA and the odorless condition. Normosmic participants, but not those with olfactory dysfunction, responded to PEA significantly higher than odorless condition with regard to RNP. The correlation analysis showed that the better the subjective or measured olfactory performance, the greater the PEA-induced sensation of nasal patency. CONCLUSIONS A specific olfactory stimulant that selectively induces olfactory perception can also evoke and modulate the sensation of nasal patency. Hence, patients might benefit from exposing themselves to odors in order to relieve the annoying nasal obstruction.
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Affiliation(s)
- Y-T Chao
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany; Division of Rhinology, Department of Otorhinolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - A Nakov
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - A Haehner
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - S Poletti
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany; Department of Otorhinolaryngology, Inselspital, Bern, Switzerland
| | - T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
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Masala C, Cavazzana A, Sanna F, Cecchini MP, Zanini A, Gasperi F, Menghi L, Endrizzi I, Borgogno M, Drago S, Cantone E, Ciofalo A, Macchi A, Monti G, Parma V, Piochi M, Pinna I, Torri L, Cabrino G, Ottaviano G, Pendolino AL, Pignatelli A, Pighin F, Bochicchio V, Motta G, Fontana G, Pasquariello B, Cavaliere C, Iacono V, Hummel T. Correlation between olfactory function, age, sex, and cognitive reserve index in the Italian population. Eur Arch Otorhinolaryngol 2022; 279:4943-4952. [PMID: 35211821 PMCID: PMC8869341 DOI: 10.1007/s00405-022-07311-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 02/09/2022] [Indexed: 11/26/2022]
Abstract
Purpose Loss of smell decreases the quality of life and contributes to the failure in recognizing hazardous substances. Given the relevance of olfaction in daily life, it is important to recognize an undiagnosed olfactory dysfunction to prevent these possible complications. Up to now, the prevalence of smell disorders in Italy is unknown due to a lack of epidemiological studies. Hence, the primary aim of this study was to evaluate the prevalence of olfactory dysfunction in a sample of Italian adults. Methods Six hundred and thirty-three participants (347 woman and 286 men; mean age 44.9 years, SD 17.3, age range 18–86) were recruited from 10 distinct Italian regions. Participants were recruited using a convenience sapling and were divided into six different age groups: 18–29 years (N = 157), 30–39 years (N = 129), 40–49 years (N = 99), 50–59 years (N = 106), > 60 years (N = 142). Olfactory function, cognitive abilities, cognitive reserve, and depression were assessed, respectively, with: Sniffin’ Sticks 16-item Odor Identification Test, Montreal Cognitive Assessment, Cognitive Reserve Index, and the Beck Depression Inventory. Additionally, socio-demographic data, medical history, and health-related lifestyle information were collected. Results About 27% of participants showed an odor identification score < 12 indicating hyposmia. Multiple regression analysis revealed that OI was significantly correlated with age, sex, and cognitive reserve index, and young women with high cognitive reserve index showing the highest olfactory scores. Conclusion This study provides data on the prevalence of olfactory dysfunction in different Italian regions.
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Affiliation(s)
- Carla Masala
- Department of Biomedical Sciences, University of Cagliari, SP8 Cittadella Universitaria Monserrato, 09042, Cagliari, Italy.
- Department of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, Dresden, Germany.
| | - Annachiara Cavazzana
- Department of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, Dresden, Germany
| | - Fabrizio Sanna
- Department of Biomedical Sciences, University of Cagliari, SP8 Cittadella Universitaria Monserrato, 09042, Cagliari, Italy
| | - Maria Paola Cecchini
- Section of Anatomy and Histology, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Strada Le Grazie, 8, 37134, Verona, Italy
| | - Alice Zanini
- Section of Anatomy and Histology, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Strada Le Grazie, 8, 37134, Verona, Italy
| | - Flavia Gasperi
- Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach, 1, San Michele All'Adige, 38010, Trento, Italy
- Center Agriculture Food Environment, University of Trento/Fondazione Edmund Mach, San Michele all'Adige, Trento, Italy
| | - Leonardo Menghi
- Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach, 1, San Michele All'Adige, 38010, Trento, Italy
- Center Agriculture Food Environment, University of Trento/Fondazione Edmund Mach, San Michele all'Adige, Trento, Italy
- Department of Technology and Innovation, University of Southern Denmark, Odense, Denmark
| | - Isabella Endrizzi
- Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach, 1, San Michele All'Adige, 38010, Trento, Italy
| | | | | | - Elena Cantone
- Neurosciences, Reproductive and Odontostomatologic Sciences, Unit of Ear, Nose and Throat, Federico II University, Naples, Italy
| | - Andrea Ciofalo
- Neurosciences, Reproductive and Odontostomatologic Sciences, Unit of Ear, Nose and Throat, Federico II University, Naples, Italy
| | - Alberto Macchi
- ORL Clinica, University of Insubria and Varese, ASST Settelaghi, Varese, Italy
| | - Giulia Monti
- ORL Clinica, University of Insubria and Varese, ASST Settelaghi, Varese, Italy
| | - Valentina Parma
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, 19104, USA
| | - Maria Piochi
- University of Gastronomic Sciences, Pollenzo, Cuneo, Italy
| | - Ilenia Pinna
- Department of Biomedical Sciences, University of Cagliari, SP8 Cittadella Universitaria Monserrato, 09042, Cagliari, Italy
| | - Luisa Torri
- University of Gastronomic Sciences, Pollenzo, Cuneo, Italy
| | | | | | | | - Angela Pignatelli
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Faride Pighin
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | | | - Gaetano Motta
- Clinic of Otorhinolaryngology, Head and Neck Surgery Unit, Department of Anesthesiology, Surgical and Emergency Science, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giorgia Fontana
- Geriatric Unit A, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | | | - Carlo Cavaliere
- Unit of Rhinology, Department of Organi di Senso, University La Sapienza, Rome, Italy
| | - Valentina Iacono
- Division of Nephrology and Dialysis, "Santa Maria della Misericordia" Hospital, Rovigo, Italy
| | - Thomas Hummel
- Department of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, Dresden, Germany
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Berro C, Pendolino AL, Foletto M, Facciolo MC, Maculan P, Prevedello L, Giuntoli DG, Scarpa B, Pavan C, Andrews PJ, Ottaviano G. Olfactory and Gustatory Function before and after Laparoscopic Sleeve Gastrectomy. ACTA ACUST UNITED AC 2021; 57:medicina57090913. [PMID: 34577836 PMCID: PMC8466191 DOI: 10.3390/medicina57090913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/18/2021] [Accepted: 08/26/2021] [Indexed: 01/09/2023]
Abstract
Background and Objectives: Bariatric surgery is the gold standard for the treatment of morbid obesity, and current evidence suggests that patients undergoing surgery can show changes in their sense of taste and smell. However, no definitive conclusions can be drawn given the heterogeneity of the studies and the contrasting results reported in the literature. Materials and Methods: We enrolled 18 obese patients undergoing laparoscopic sleeve gastrectomy (LSG) and 15 obese controls. At baseline (T0) and 6 months after enrollment/surgery (T1), both groups underwent Sniffin’ Sticks and whole mouth test. Post-operative qualitative taste variations were also analyzed and SNOT-22, VAS for taste and smell, and MMSE were administered. Results: An improvement in the olfactory threshold was observed in the treatment group (p = 0.03) at 6 months. At multivariate analysis, the olfactory threshold differences observed correlated with MMSE (p = 0.03) and T0 gustatory identification (p = 0.01). No changes in sense of taste were observed between the two groups at 6 months, even though nine subjects in the treatment group reported a worsening of taste. This negatively correlated with age (p < 0.001), but a positive marginal correlation was observed with the olfactory threshold difference between T0 and T1 (p = 0.06). Conclusions: Olfaction can improve after LSG, and this seems to be the consequence of an improved olfactory threshold. Although we did not observe any change in gustatory identification, food’s pleasantness worsened after bariatric surgery.
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Affiliation(s)
- Cecilia Berro
- Department of Neurosciences, Otolaryngology Section, University of Padova, 35128 Padova, Italy; (C.B.); (M.C.F.); (D.G.G.); (G.O.)
| | - Alfonso Luca Pendolino
- Department of ENT, Royal National ENT & Eastman Dental Hospitals, London WC1E 6DG, UK;
- Ear Institute, University College London, London WC1X 8EE, UK
- Correspondence:
| | - Mirto Foletto
- Centre for Mechanics of Biological Materials, University of Padova, 35128 Padova, Italy;
- IFSO Bariatric Centre of Excellence, Padova University Hospital, 35128 Padova, Italy;
| | - Maria Cristina Facciolo
- Department of Neurosciences, Otolaryngology Section, University of Padova, 35128 Padova, Italy; (C.B.); (M.C.F.); (D.G.G.); (G.O.)
| | - Pietro Maculan
- Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, 35128 Padova, Italy;
| | - Luca Prevedello
- IFSO Bariatric Centre of Excellence, Padova University Hospital, 35128 Padova, Italy;
| | - Diletta Giulia Giuntoli
- Department of Neurosciences, Otolaryngology Section, University of Padova, 35128 Padova, Italy; (C.B.); (M.C.F.); (D.G.G.); (G.O.)
| | - Bruno Scarpa
- Department of Statistical Sciences and Department of Mathematics Tullio Levi-Civita, University of Padova, 35128 Padova, Italy;
| | - Chiara Pavan
- Department of Psychiatry, University of Padua, 35128 Padua, Italy;
| | - Peter J. Andrews
- Department of ENT, Royal National ENT & Eastman Dental Hospitals, London WC1E 6DG, UK;
- Ear Institute, University College London, London WC1X 8EE, UK
| | - Giancarlo Ottaviano
- Department of Neurosciences, Otolaryngology Section, University of Padova, 35128 Padova, Italy; (C.B.); (M.C.F.); (D.G.G.); (G.O.)
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