Higher number of teeth is associated with decreased prevalence of hearing impairment in Japan

Tanaka, Keiko; Okada, Masahiro; Kato, Hiromasa; Utsunomiya, Hisanori; Senba, Hidenori; Takagi, Daiki; Teraoka, Masato; Yamada, Hiroyuki; Matsuura, Bunzo; Hato, Naohito; Miyake, Yoshihiro

doi:10.1016/j.archger.2021.104502

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…The AICOS is an ongoing, population-based, prospective study that was started in 2015 (Fukui et al 2019 ; Miyake et al 2020 , 2021 , 2023 ; Hara et al 2020 ; Tanaka et al 2021 ; Nobori et al 2022 ; Kumon et al 2022 ). The baseline survey of the AICOS was conducted in Yawatahama City in 2015, Uchiko Town in 2016, Seiyo City in 2017, and Ainan Town in 2017, with total populations of approximately 36,000, 17,000, 38,000, and 22,000, respectively; these four municipalities are among the 20 municipalities in Ehime Prefecture on Shikoku Island, situated south of Japan’s main island.…”

Section: Methodsmentioning

confidence: 99%

Functional AGXT2 SNP rs180749 variant and depressive symptoms: Baseline data from the Aidai Cohort Study in Japan

Kumon,

Miyake,

Yoshino

et al. 2024

J Neural Transm

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No study has shown the relationship between alanine-glyoxylate aminotransferase 2 (AGXT2) single nucleotide polymorphisms (SNPs) and depressive symptoms. The present case–control study examined this relationship in Japanese adults. Cases and control participants were selected from those who participated in the baseline survey of the Aidai Cohort Study, which is an ongoing cohort study. Cases comprised 280 participants with depressive symptoms based on a Center for Epidemiologic Studies Depression Scale (CES-D) score ≥ 16. Control participants comprised 2034 participants without depressive symptoms based on the CES-D who had not been diagnosed by a physician as having depression or who had not been currently taking medication for depression. Adjustment was made for age, sex, smoking status, alcohol consumption, leisure time physical activity, education, body mass index, hypertension, dyslipidemia, and diabetes mellitus. Compared with the GG genotype of rs180749, both the GA and AA genotypes were significantly positively associated with the risk of depressive symptoms assessed by the CES-D: the adjusted odds ratios for the GA and AA genotypes were 2.83 (95% confidence interval [CI] 1.23–8.24) and 3.10 (95% CI 1.37–8.92), respectively. The TGC haplotype of rs37370, rs180749, and rs16899974 was significantly inversely related to depressive symptoms (crude OR 0.67; 95% CI 0.49–0.90), whereas the TAC haplotype was significantly positively associated with depressive symptoms (crude OR 1.24; 95% CI 1.01–1.52). This is the first study to show significant associations between AGXT2 SNP rs180749, the TGC haplotype, and the TAC haplotype and depressive symptoms.

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Section: Methodsmentioning

confidence: 99%

Functional AGXT2 SNP rs180749 variant and depressive symptoms: Baseline data from the Aidai Cohort Study in Japan

Kumon,

Miyake,

Yoshino

et al. 2024

J Neural Transm

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“…AICOS is a prospective study [11][12][13][14][15][16] that included a baseline survey in 2015, and it is still ongoing. The present cross-sectional study used data collected in Yawatahama City in 2015, Uchiko Town in 2016, and Seiyo City and Ainan Town in 2017, with total populations of nearly 36,000, 17,000, 38,000, and 22,000, respectively.…”

Section: Study Populationmentioning

confidence: 99%

Fish and Polyunsaturated Fatty Acid Intake and Carotid Intima–Media Thickness in Japan: the Aidai Cohort Study in Yawatahama, Uchiko, Seiyo, and Ainan

Miyake

Tanaka

Nagata

et al. 2023

JAT

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Aim: Epidemiological evidence regarding the relationship between fish and fatty acid intake and carotid intimamedia thickness (CIMT) has been limited and inconsistent. The current cross-sectional study investigated this issue using baseline data from the Aidai Cohort Study.Methods: Study subjects were 2024 Japanese men and women aged 34-88 years. Right and left CIMT were measured at the common carotid artery using an automated carotid ultrasonography device. Maximum CIMT was defined as the largest CIMT value in either the left or right common carotid artery. Carotid wall thickening was defined as a maximum CIMT value ＞1.0 mm. Results:The prevalence of carotid wall thickening was 13.0%. In men, intake of n-3 polyunsaturated fatty acids (PUFA) was independently positively related to the prevalence of carotid wall thickening, while no associations were found between intake of fish and the other fatty acids and carotid wall thickening or maximum CIMT. In women, intake levels of fish, n-3 PUFA, eicosapentaenoic acid, docosahexaenoic acid, and arachidonic acid were independently inversely associated with carotid wall thickening and intake levels of fish, n-3 PUFA, α-linolenic acid, n-6 PUFA, and linoleic acid were independently inversely associated with the maximum CIMT. No significant relationships were found between intake of total fat, saturated fatty acids, or monounsaturated fatty acids and carotid wall thickening or maximum CIMT regardless of sex. Conclusions:In women, higher intake of fish and n-3 and n-6 PUFA may be associated with a lower prevalence of carotid wall thickening and a decrease in maximum CIMT.

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“…Researchers believe that the herpes virus is the key to linking the two. Others have found that tooth loss may be associated with an increased prevalence of HL [9], and that periodontitis is an important cause of tooth loss. They suggest that this association may be related to peripheral afferent nerve block or unilateral mastication of the stomatognathic system.…”

Section: Introductionmentioning

confidence: 99%

The Association between Hearing Loss and Periodontitis: Insights from the NHANES Database

Zou,

Chen,

Mei

et al. 2024

Preprint

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Background Despite the prevalence of periodontitis and hearing impairment, research exploring their association is limited. This study aims to examine the potential relationship between periodontitis and hearing loss, using data from The National Health and Nutrition Examination Survey (NHANES) 2009–2012. Methods Data from the National Health and Nutrition Examination Survey (NHANES) for the years 2009–2012 were analyzed, focusing on participants who underwent both periodontal examinations and audiometric testing. The study included 1,642 participants after excluding those with incomplete data. Periodontitis was dichotomized as a binary variable of presence or absence. HL was both a categorical variable after grouping and an ungrouped continuous variable. Data were analyzed by multifactor logistic regression and subgroup analysis using EmpowerStats 3.0 software, and restricted cubic curves were plotted using R 4.3.2. Results The results showed that the prevalence of periodontitis was 60.97% and the hearing impaired population comprised 12.48% of the study population. There was a significant correlation between the severity of hearing loss and the presence of moderate to severe periodontitis. Participants with hearing loss greater than 40 dB showed a markedly higher likelihood of having periodontitis compared to those with normal hearing, even after adjusting for potential confounders such as age, smoking, diabetes, and socioeconomic status. Conclusions The findings suggest a notable association between hearing impairment and the risk of periodontitis. The study highlights the importance of considering oral health in patients with hearing loss and suggests further investigation into the shared inflammatory pathways that may contribute to both conditions.

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Higher number of teeth is associated with decreased prevalence of hearing impairment in Japan

Cited by 7 publications

References 22 publications

Functional AGXT2 SNP rs180749 variant and depressive symptoms: Baseline data from the Aidai Cohort Study in Japan

Functional AGXT2 SNP rs180749 variant and depressive symptoms: Baseline data from the Aidai Cohort Study in Japan

Fish and Polyunsaturated Fatty Acid Intake and Carotid Intima–Media Thickness in Japan: the Aidai Cohort Study in Yawatahama, Uchiko, Seiyo, and Ainan

The Association between Hearing Loss and Periodontitis: Insights from the NHANES Database

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