Browsing by Author "Schubert, Carla R."

Now showing 1 - 19 of 19

Cadmium, obesity, and education, and the 10-year incidence of hearing impairment: The beaver dam offspring study
(1970-01-01)
Dalton, Dayna S.
;
Schubert, Carla R.
;
Pinto, Alex
;
Fischer, Mary E.
;
Huang, Guan-Hua
Objectives/Hypothesis To determine the 10-year incidence of hearing impairment (HI) and associated risk factors in the Beaver Dam Offspring Study (BOSS; 2004-present), a large middle-aged cohort followed for 10 years. Study Design Prospective cohort study. Methods Hearing thresholds were measured at baseline (2005-2008) and 5- (2010-2013) and 10-year (2015-2017) follow-up examinations. HI was defined as a pure-tone average >25 dB HL in either ear. BOSS participants free of HI at baseline with at least one follow-up examination (N = 2,065) were included. Potential risk factors evaluated included cardiovascular measures, health history, lifestyle factors, inflammatory markers, vitamins D and B12, lead, and cadmium. Results Participants were 21 to 79 years (mean age = 47.9 years) at baseline. The 10-year cumulative HI incidence was 17.4% (95% confidence interval [CI]: 15.7-19.2) and was twice as likely in men (24.4%, 95% CI: 21.5-27.7) than in women (12.2%, 95% CI: 10.3-14.3). In a multivariable adjusted model, age (hazard ratio [HR] = 1.48, 95% CI: 1.38-1.59, per 5 years), male sex (HR = 2.47, 95% CI: 1.91-3.18), less than a college education (HR = 1.35, 95% CI: 1.02-1.79), body mass index (HR = 1.03, 95% CI: 1.01-1.05, per kg/m(2)), and higher cadmium levels (HR = 1.42, 95% CI: 1.05-1.92, quintile 5 vs. quintiles 1-4) were associated with the 10-year cumulative incidence of HI. There was no association between high lead levels, vitamins D or B12, and 10-year incidence of HI. Conclusions In addition to age and sex, obesity, education, and blood cadmium levels were associated with increased incidence of HI. These prospective results add to evidence that age-related HI is a multifactorial preventable disorder. Level of Evidence 2b Laryngoscope, 2019
Carotid atherosclerosis and cognitive function in midlife: The beaver dam offspring study
(2011-11-01)
Zhong, Wenjun
;
Cruickshanks, Karen J.
;
Huang, Guan-Hua
;
Klein, Barbara E. K.
;
Klein, Ronald
Background: Atherosclerosis may be associated with cognitive function; however the studies are few, especially among midlife adults. Methods: Participants in the beaver dam offspring study who had cognitive test data and gradable carotid artery ultrasound scans were included (n = 2794, mean age: 49 years). Atherosclerosis was measured by carotid intima-media thickness (IMT) and the presence of plaque. Cognitive function was measured by the trail making test (TMT), grooved pegboard test (GPT) and mini-mental state examination (MMSE). Generalized cognitive function was defined by a summary score calculated from the TMT and GPT. Linear regression was used to evaluate the associations between carotid atherosclerosis and cognitive function tests. Results: Larger IMT was associated with lower GPT, MMSE and the summary score adjusting for multiple factors, the coefficients were: 13.8s (p < 0.0001), -0.6 (p = 0.007), and 0.47 (p = 0.01), respectively for 1 mm increase in IMT. Plaque scores were significantly associated with TMT-B, GPT, MMSE, and the summary score adjusting for age, sex and education. The associations remained statistically significant after further adjustments except for the association with TMT-B, which was attenuated and no longer significant. Conclusions: Our results show the significant associations between markers of carotid atherosclerosis and cognitive function in a cohort of persons aged 21-84 years. Longitudinal studies are needed to further examine these associations. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
Carotid Intima Media Thickness, Atherosclerosis, and 5-Year Decline in Odor Identification: The Beaver Dam Offspring Study
(2015-07-01)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Fischer, Mary E.
;
Huang, Guan-Hua
;
Klein, Ronald
Background. The purpose of this study was to determine if subclinical markers of atherosclerosis are associated with a decline in olfactory function. Methods. The San Diego Odor Identification Test was administered to 2,302 participants (age 21-84 years) at the baseline (2005-2008) and 5-year follow-up (2010-2013) examinations of the Beaver Dam Offspring Study. A decline in odor identification was defined as a decrease in San Diego Odor Identification Test score of 2 or more (range 0-8) from Beaver Dam Offspring Study 1 to Beaver Dam Offspring Study 2. Carotid intima media thickness and plaque, blood pressure, pulse wave velocity, and body mass index were measured and other risk factor data were obtained by interview. Results. Overall 3.2% of participants had a decline in San Diego Odor Identification Test score at 5 years. In age-and sex-adjusted models, mean intima media thickness (odds ratio = 1.17, 95% CI = 1.01, 1.34, per 0.1 mm) and number of sites (range 0-6) with carotid artery plaque (odds ratio = 1.35, 95% CI = 1.11, 1.65, per site) at baseline were associated with an increased risk for decline. Plaque score (odds ratio = 1.24, 95% CI = 1.01, 1.53) remained a significant independent predictor of olfactory decline in a model that included age, sex, hypertension, body mass index, alcohol, and smoking. Conclusions. Subclinical atherosclerosis was associated with an increased risk for olfactory decline indicating that atherosclerosis may be one of the risk factors for the decline in olfactory function seen with aging. Strategies to improve vascular health may also benefit olfactory health.
Factors Related to Fungiform Papillae Density: The Beaver Dam Offspring Study
(2013-10-01)
Fischer, Mary E.
;
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Pinto, Alex
;
Klein, Ronald
The distribution of fungiform papillae density and associated factors were examined in the Beaver Dam Offspring Study. Data were from 2371 participants (mean age 48.8 years, range 2184 years) with 1108 males and 1263 females. Fungiform papillae were highlighted with blue food coloring and the number of fungiform papillae within a standard 6-mm circle was counted. Whole mouth suprathreshold taste intensity was measured. The mean fungiform papillae density was 103.5 papillae/cm(2) (range 0212.2 papillae/cm(2)). For each 5-year increase in age, the mean fungiform papillae density was 2.8 papillae/cm(2) lower and the mean density for males was 10.2 papillae/cm(2) lower than for females. Smokers had significantly lower mean densities (former smokers: 5.1 papillae/cm(2); current smokers: 9.3 papillae/cm(2)) than nonsmokers, and heavy alcohol drinkers had a mean density that was 4.7 papillae/cm(2) lower than nonheavy drinkers. Solvent exposure was related to a significantly higher density (6.8 papillae/cm(2)). The heritability estimate for fungiform papillae density was 40.2%. Propylthiouracil taster status, TAS2R38 haplotype, and perceived taste intensity were not related to density. In summary, wide variability in fungiform papillae density was observed and a number of related factors were found including the modifiable factors of smoking and alcohol consumption.
Familial Aggregation of Olfactory Impairment and Odor Identification in Older Adults
(2010-08-01)
Raynor, Laura A.
;
Pankow, James S.
;
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Miller, Michael B.
Objectives/Hypothesis: The objective of this analysis was to estimate the genetic contributions to olfactory impairment. Study Design: Population based. Methods: Olfactory impairment was measured using the San Diego Odor Identification Test at the 5-year follow-up examination for the population-based Epidemiology of Hearing Loss study. Subjects were classified as impaired if they correctly identified fewer than six out of eight odorants. To reduce confounding by age, analysis was restricted to subjects who were 60 to 79 years of age. Familial aggregation was evaluated by heritability estimates, tetrachoric correlations, and odds ratios in 207 sibling pairs from 135 sibships. Results: The prevalence of olfactory impairment was 20.2% overall and was higher in men. After adjustment for sex, age, and smoking, heritability of olfactory impairment was moderate (h(2) = 0.55), although not statistically significantly different from 0 (P = .09). By contrast, the adjusted heritability estimate for bubble gum, one of the individual odorants, was significant (h(2) = 0.51; P = .01). Conclusions: Genetic factors might contribute to general olfactory impairment in older adults, but the strength of familial aggregation differs for individual odorants, a finding consistent with prior research.
Generational Differences in the 5-Year Incidence of Age-Related Macular Degeneration
(2017-12-01)
Cruickshanks, Karen J.
;
Nondahl, David M.
;
Johnson, Lauren J.
;
Dalton, Dayna S.
;
Fisher, Mary E.
IMPORTANCE Whether a reported decline in the risk of developing age-related macular degeneration (AMD) continued for people born during the Baby Boom years (1946-1964) or later is unknown. These data are important to plan for ocular health care needs in the 21st century. OBJECTIVES To determine whether the 5-year risk for AMD declined by generation and to identify factors that contributed to improvement in risk. DESIGN, SETTING, AND PARTICIPANTS Data came from the longitudinal cohort Beaver Dam Eye Study (March 1, 1988, through September 15, 1990, and March 1, 1993, through June 15, 1995) and the Beaver Dam Offspring Study (June 8, 2005, through August 4, 2008, and July 12, 2010, through March 21, 2013). These population-based studies examined residents of Beaver Dam, Wisconsin, aged 43 to 84 years in 1987 through 1988 and their adult offspring aged 21 to 84 years in 2005 through 2008. A total of 4819 participants were at risk for developing AMD based on fundus images obtained at baseline visits. Data were analyzed from February 18, 2016, through June 22, 2017, with additional analyses ending September 22, 2017. MAIN OUTCOMES AND MEASURES Fundus images were graded for AMD using the Wisconsin Age-related Maculopathy Grading System. The incidence of AMD was defined as the presence at the 5-year follow-up examination of pure geographic atrophy or exudative macular degeneration, any type of drusen with pigmentary abnormalities, or soft indistinct drusen without pigmentary abnormalities. RESULTS Among the 4819 participants, the mean (SD) baseline age of the cohort was 54 (11) years; 2117 were men (43.9%) and 2702 were women (56.1%). The 5-year age-and sex-adjusted incidence of AMD was 8.8% in the Greatest Generation (born during 1901-1924), 3.0% in the Silent Generation (born during 1925-1945), 1.0% in the Baby Boom Generation (born during 1946-1964), and 0.3% in Generation X (born during 1965-1984). Adjusting for age and sex, each generation was more than 60% less likely to develop AMD than the previous generation (relative risk, 0.34; 95% CI, 0.24-0.46). The generational association (relative risk, 0.40; 95% CI, 0.28 to 0.57) remained significant after adjusting for age, sex, smoking, educational attainment, exercise, levels of non-high-density lipoprotein cholesterol and high-sensitivity C-reactive protein, and use of nonsteroidal anti-inflammatory drugs, statins, and multivitamins. CONCLUSIONS AND RELEVANCE The 5-year risk for AMD declined by birth cohorts throughout the 20th century. Factors that explain this decline in risk are not known. However, this pattern is consistent with reported declines in risks for cardiovascular disease and dementia, suggesting that aging Baby Boomers may experience better retinal health at older ages than did previous generations.
Intensity of 6-n-Propylthiouracil (PROP) Taste, Food Preferences, and Obesity: The Beaver Dam Offspring Study
(2009-09-01)
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Snyder, Derek J.
;
Bartoshuk, Linda M.
;
Huang, Guan-Hua
Measuring Taste Impairment in Epidemiologic Studies The Beaver Dam Offspring Study
(2008-10-01)
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Snyder, Derek J.
;
Bartoshuk, Linda M.
;
Acher, Charles W.
OBESITY AND DEPRESSION SYMPTOMS IN THE BEAVER DAM OFFSPRING STUDY POPULATION
(2010-09-01)
Zhong, Wenjun
;
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Nieto, F. Javier
;
Huang, Guan-Hua
Background: Depression and obesity are both important public health problems. However, it is not clear whether obesity contributes to depression. Our study aims to evaluate the association between obesity and possible depression. Methods: During the Beaver Dam Offspring Study examination, participants' body weight and height were measured with a Detecto 758C digital scale with height bar, and depression symptoms were measured with the Center for Epidemiological Studies-Depression (CES-D) Scale. Other relevant information, such as demographic factors, lifestyle factors, comorbidities, and use of antidepressants, was also collected during the examination. There were 2,641 participants included in the analyses. Results: Obesity was associated with possible depression measured by CES-D Scale (OR= 1.6, 95% CI: 1.3-2.0) after controlling for age and gender. The association remained similar after further adjustments. Obesity was significantly associated with all four domains measured by CES-D Scale after controlling for age and sex, with the largest effect on "Somatic Complaints" domain (beta .15, 95% CI: 0.0836-0.223). The association with "Interpersonal Difficulties" was not significant after further adjustments. Conclusions: Obesity was associated with a higher risk of possible depression and had different influences on specific domains of depression symptoms measured by CES-D Scale. These findings suggest the need for longitudinal studies on the effects of obesity on specific depression symptoms. Depression and Anxiety 27:846-851, 2010. (C) 2010 Wiley-Liss, Inc.
Odor identification and cognitive function in the Beaver Dam Offspring Study
(2013-08-19)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Fischer, Mary E.
;
Huang, Guan-Hua
;
Klein, Ronald
Olfactory impairment is associated with cognitive impairment in older adults but less is known about the association of olfactory impairment and cognitive function in middle-aged adults. The association between olfactory impairment and cognitive function tests of attention, processing speed, and executive and psychomotor function was explored in 2837 participants (21-84 years; mean age 49 years) in the Beaver Dam Offspring Study. Among middle-aged participants (aged 35-64 years), those with impairment on an odor identification test took significantly longer to complete the Trail Making Test (TMT-A and TMT-B) and the Grooved Peg Board (GPB) test, than those without olfactory impairment in regression models adjusted for multiple factors. Similar results were found for the TMT-A and TMT-B, but not the GPB, in the whole cohort. Olfactory impairment was associated with poorer performance on cognitive function tests in a primarily middle-aged cohort.
Olfactory Impairment in Adults The Beaver Dam Experience
(2009)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Murphy, Claire
;
Huang, Guan-Hua
;
Klein, Barbara E. K.
Olfactory function maybe important for environmental and nutritional safety and enjoyment. Population-based epidemiological studies of olfaction are needed to understand the magnitude of the health burden, identify modifiable risk factors, and develop and test prevention and treatment strategies for olfactory impairment. However, measuring olfaction in large studies is challenging, requiring repeatable, efficient methods that can measure change over time. Two large cohort studies, the Epidemiology of Hearing Loss Study (EHLS) and the Beaver Dam Offspring Study (BOSS), included olfactory testing. In both studies, the San Diego Odor Identification Test (SDOIT) was used to measure olfaction. Subjects were asked to identify eight common household odors (such as coffee and chocolate). Olfactory impairment was defined as correctly identifying fewer than six out of eight odorants after two trials. The EHLS participants were age 53-95 years at the time of the first measurement (1998-2000), and participants in the BOSS were age 21-84 years. The prevalence of olfactory impairment in the EHLS was 25% overall, more common in men than women, and increased with age. Five years later olfaction was measured a second time and the majority (84%) of the EHLS participants were classified the same. Among those with impairment at the base line nearly one-third (31%) improved to unimpaired. This heterogeneity in olfactory impairment has unique implications for data analyses and predicting outcomes and associations. Preliminary data from the BOSS suggest the prevalence of olfactory impairment may be lower in younger generations. All these factors point to a continuing need for epidemiological studies of olfaction.
Olfactory Impairment in Adults: The Epidemiology of Hearing Loss Study and the Beaver Dam Offspring Study
(2008-10-01)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Murphy, Claire
;
Acher, Charles W.
;
Huang, Guan-Hua
Olfactory Impairment in an Adult Population: The Beaver Dam Offspring Study
(2012-05-01)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Fischer, Mary E.
;
Huang, Guan-Hua
;
Klein, Barbara E. K.
The objective of this study was to determine the prevalence of olfactory impairment and associated risk factors and the effects of olfactory impairment on dietary choices and quality of life. Odor identification was measured in 2838 participants aged 21-84 years (mean 49 years) in the Beaver Dam Offspring Study. The overall prevalence of olfactory impairment was 3.8%, increased with age (from 0.6% in those < 35 years to 13.9% among those >= 65 years) and was more common in men than women. In a multivariate model age (odds ratio [OR] = 1.48, 95% confidence interval [CI] = 1.33, 1.64 for every 5-year increase), nasal polyps or deviated septum (OR = 2.69, 95% CI = 1.62, 4.48), ankle-brachial index < 0.9 (OR = 3.62, 95% CI = 1.45, 9.01), and smoking (women only) (OR = 2.43, 95% CI = 1.19, 4.98 ever smoked vs. never) were associated with an increased odds of olfactory impairment, whereas higher household income, >=$50 000 versus <$50 000 per year, was associated with a decreased odds of olfactory impairment (OR = 0.48, 95% CI = 0.31, 0.73). Participants with olfactory impairment were less likely to report that food tasted as good as it used to, or that they experienced food flavors the same. There was no association between olfactory impairment and general health-related quality of life, depressive symptoms, or dietary choices. The prevalence of olfactory impairment was low in this largely middle-aged cohort, and some factors associated with olfactory impairment are potentially modifiable.
Prevalence of Olfactory Impairment in Adults Across the Life Span: The Beaver Dam Offspring Study
(2009-09-01)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Krantz, Elizabeth M.
;
Huang, Guan-Hua
;
Klein, Barbara E. K.
Sensorineural Impairments, Cardiovascular Risk Factors, and 10-Year Incidence of Cognitive Impairment and Decline in Midlife: The Beaver Dam Offspring Study
(2019-11-01)
Schubert, Carla R.
;
Cruickshanks, Karen J.
;
Fischer, Mary E.
;
Pinto, A. Alex
;
Chen, Yanjun
Background: Sensorineural impairments and cardiovascular risk factors (CVRF) and disease (CVD) in midlife may be important predictors of future cognitive health, but longitudinal studies that include multiple sensorineural measures in middle-aged adults are lacking. Methods: Hearing, vision, and olfaction, and CVRF and CVD were measured at the Beaver Dam Offspring Study baseline (2005-2008) examination. The Mini-Mental State Examination and Trail Making Tests A and B were administered at all phases and additional cognitive function measures were obtained at 5 (2010-2013) and 10 years (2015-2017). Cox proportional hazards models were used to evaluate associations between baseline sensorineural impairments, CVRF, CVD, and 10-year cumulative incidence of cognitive impairment and decline. Results: There were 2,556 participants (22-84 years) without cognitive impairment at baseline and data from at least one follow-up. In a multivariable model including age, sex, education, and head injury, visual impairment (hazard ratio = 2.59, 95% confidence interval = 1.34, 5.02), olfactory impairment (hazard ratio = 3.18, 95% confidence interval = 1.53, 6.59), CVD (hazard ratio = 2.37, 95% confidence interval = 1.24, 4.52), and not consuming alcohol in the past year (hazard ratio = 2.21, 95% confidence interval = 1.16, 4.19) were associated with the 10-year cumulative incidence of cognitive impairment. Current smoking and diabetes were associated with increased risk, and exercise with decreased risk, of 10-year decline in cognitive function. Conclusions: Visual and olfactory impairments, CVRF, and CVD were associated with the 10-year cumulative incidence of cognitive impairment and decline in middle-aged adults. Identifying modifiable factors associated with cognitive decline and impairment in midlife may provide opportunities for prevention or treatment and improve cognitive health later in life.
Subclinical atherosclerosis and increased risk of hearing impairment
(2015-02-01)
Fischer, Mary E.
;
Schubert, Carla R.
;
Nondahl, David M.
;
Dalton, Dayna S.
;
Huang, Guan-Hua
Objective: The study\'s purpose was to test if subclinical atherosclerosis was associated with the risk of developing HI in a large cohort of middle-aged participants. Methods: Study subjects were members of the Beaver Dam Offspring Study (BOSS), a longitudinal study of adult children of participants in the population-based Epidemiology of Hearing Loss Study (1993-present). BOSS examinations took place in 2005-2008 (baseline) and 2010-2013 (5-year follow-up). The 5-year incidence of hearing impairment was defined as a pure-tone average (PTA) of thresholds at 0.5, 1, 2 and 4 kHz > 25 dB Hearing Level (dB HL) in either ear at follow-up among participants at risk (baseline PTA in both ears < = 25 dB HL; n = 2436, mean age = 47.7 years). Atherosclerosis was measured as the mean carotid intima-media thickness and the presence of carotid artery plaque. Results: Among the 1984 participants at-risk with a follow-up audiometric examination, the 5-year incidence of hearing impairment was 8.3% (95% Confidence Interval (C.I.) 7.1, 9.5). With multivariable adjustment, carotid intima- media thickness was positively associated with hearing impairment incidence (Relative Risk (RR) = 1.14 per 0.1 mm, 95% C.I. 1.04, 1.24). The number of sites (0-6) with plaque was also positively associated with the incidence of impairment (RR = 1.16 per site, 95% C.I. 1.01, 1.32). Conclusion: Atherosclerosis was associated with the 5-year incidence of hearing impairment in this predominantly middle-aged cohort. Interventions targeting atherosclerosis prevention may help to prevent or delay the onset of hearing impairment. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
Taste Intensity in the Beaver Dam Offspring Study
(2013-06-01)
Fischer, Mary E.
;
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Pinto, Alex
;
Klein, Barbara E. K.
Objectives/Hypothesis: To determine the distribution of the perceived intensity of salt, sweet, sour, and bitter in a large population and to investigate factors associated with perceived taste intensity. Study Design: Cross-sectional population. Methods: Subjects (n = 2,374; mean age, 48.8 years) were participants in the Beaver Dam Offspring Study examined during 2005 to 2008. Perceived taste intensity was measured using paper disks and a general labeled magnitude scale. Multiple linear regression was performed. Results: Mean intensity ratings were: salt = 27.2 (standard deviation [SD] = 18.5), sweet = 0.4 (SD = 15.0), sour = 35.7 (SD = 21.4), and bitter = 49.6 (SD 23.3). Females and those with less than a college degree education rated tastes stronger. With adjustment for age, sex, and education, stronger perceived sour and bitter intensities were related to current smoking (sour: B = 2.8, 95% confidence interval [CI], 0.4 to 5.2; bitter: B = 2.8, 95% CI, 0.3 to 5.4) and lipid-lowering medications (sour: B = 5.1, 95% CI, 2.5 to 7.6; bitter: B = 3.2, 95% CI, 0.6 to 5.8). Alcohol consumption in the past year was related to weaker salt (B = -2.8, 95% CI, -5.3 to -0.3) and sweet intensity ratings (B = -2.3, 95% CI, -4.3 to -0.3), whereas olfactory impairment was associated with higher sweet ratings (B = 4.7, 95% CI, 1.4 to 7.9). Conclusions: Perceived intensities were strongest for bitter and weakest for sweet. Sex and education were associated with each taste, whereas age did not demonstrate a consistent relationship. Associations with other factors differed by tast-ants, with current smoking and alcohol consumption being related to some tastes.
The Association of Taste with Change in Adiposity-Related Health Measures
(2014-08-01)
Fischer, Mary E.
;
Cruickshanks, Karen J.
;
Schubert, Carla R.
;
Pinto, Alex
;
Huang, Guan-Hua
The relationship between taste-intensity patterns and 5-year change in adiposity-related health measures was determined. Participants were members of the Beaver Dam Offspring Study, a study of the adult children of participants in the population-based Epidemiology of Hearing Loss Study. There were 1,918 participants (mean baseline age=48.8 years; range=22 to 84 years) with baseline taste (2005 to 2008) and follow-up (2010 to 2013) data Outcomes included 5-year change in body mass index, waist circumference, blood pressure, non high-density lipoprotein cholesterol, and glycosylated hemoglobin A1c, and hedonic ratings of specific foods. Cluster analysis with Ward\'s minimum variance method identified the following 5 patterns of the suprathreshold taste intensities of salt, sweet, sour, and bitter: salt and sweet intensities slightly above population averages, average sour and bitter intensities; salt, sour, and bitter intensities above population average, average sweet intensity; salt, sour, and bitter intensities above population average, sweet intensity substantially above average; all intensities below population averages; and all intensities close to population average. The General Linear Model procedure was used for testing cluster differences in the outcomes. With covariate adjustment, the group with all intensities close to population averages had a significantly lower average increase in body mass index compared with the group with above-average intensities for salt, sour, and bitter (+0.4 vs +0.9), and in glycosylated hemoglobin A1 c compared with the group with above-average intensities for all tastes (+0.20% vs +0.34%). Clusters differed in the hedonics of foods representing sweetness and saltiness. The study\'s findings provide evidence that perceived taste intensity might be related to changes in adiposity-related health.
The Associations between 6-n-Propylthiouracil (PROP) Intensity and Taste Intensities Differ by TAS2R38 Haplotype
(2014-01-01)
Fischer, Mary E.
;
Cruickshanks, Karen J.
;
Pankow, James S.
;
Pankratz, Nathan
;
Schubert, Carla R.
Background/Aims: The influence of TAS2R38 haplotype on the relationship between the perceived intensity of propylthiouracil (PROP) and the basic tastes of salt, sweet, sour, and bitter (quinine) was evaluated in the Beaver Dam Offspring Study. Methods: Genotyping was performed on 1,670 participants aged >= 45 years (mean age = 54.4; range = 45-84), and supra-threshold taste intensity was measured using filter paper disks and a general labeled magnitude scale (0-100). Results: Among those with taste intensity data and the PAV or AVI haplotype (n = 1,258), the mean perceived intensity of PROP was 37.3 (SD = 30.0), but it varied significantly (p < 0.0001) by diplotype (PAV/PAV = 60.1; PAV/AVI = 46.5; AVI/AVI = 14.4). PROP intensity was correlated with the basic taste intensities (salt: r = 0.22; sweet: r = 0.25; sour: r = 0.21; quinine bitterness: r = 0.38; p < 0.001 for all tastes); however, a significant effect modification of the PROP-taste intensity relationships by TAS2R38 diplotype was observed. There was a stronger association between PROP and each of the basic tastes in the PAV/PAV diplotype group than in the other groups. Conclusions: Directly measuring the perceived intensity of the 4 tastes, rather than using PROP intensity as an indicator of taste responsiveness, is recommended for studies of taste perception. (C) 2015 S. Karger AG, Basel