scholarly journals Age-Related Changes in Human Vestibulo-Ocular and Optokinetic Reflexes: Pseudorandom Rotation Tests

1990 ◽  
Vol 1 (1) ◽  
pp. 61-71 ◽  
Author(s):  
R.J. Peterka ◽  
F.O. Black ◽  
M.B. Schoenhoff
Keyword(s):  
Visual Information ◽  
Human Subjects ◽  
Normal Population ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Optokinetic Reflex ◽  
Age Related ◽  
Vestibulo Ocular Reflex ◽  
Time Required ◽  
Effects Of Aging

The dynamic response properties of horizontal vestibulo-ocular reflex (VOR) and optokinetic reflex (OKR) were characterized in 216 human subjects ranging in age from 7 to 81 y. The object of this cross-sectional study was to determine the effects of aging on VOR and OKR reflex dynamics, and to identify the distributions of parameters that describe VOR and OKR responses to pseudorandom stimuli in a putatively normal population. In general, VOR and OKR response parameters changed in a manner consistent with declining function with increasing age. For the VOR this was reflected in declining response amplitudes, although the magnitude of the decline was small relative to the variability of the data. For the OKR the lag time of the response, probably associated with the time required for visual information processing, increased linearly with age at a rate of about 1 ms per year.

scholarly journals Age-Related Changes in Human Vestibulo-Ocular Reflexes: Sinusoidal Rotation and Caloric Tests

1990 ◽  
Vol 1 (1) ◽  
pp. 49-59 ◽  
Author(s):  
R.J. Peterka ◽  
F.O. Black ◽  
M.B. Schoenhoff
Keyword(s):  
Human Subjects ◽  
Normal Population ◽  
Poor Correlation ◽  
Caloric Test ◽  
Compensatory Response ◽  
Ocular Reflex ◽  
Age Related ◽  
Test Parameters ◽  
Vestibulo Ocular Reflex ◽  
Effects Of Aging

The dynamic response properties of horizontal vestibulo-ocular reflex (VOR) were characterized in 216 human subjects ranging in age from 7 to 81 y. The effects of aging on VOR dynamics and parameter distributions that describe VOR responses to caloric and to sinusoidal rotational stimuli were determined in a putatively normal population. Caloric test parameters showed no consistent trend with age. Rotation test parameters showed declining response amplitude and slightly less compensatory response phase with increasing age. The magnitudes of these changes were not large relative to the variability within the population. The age-related trends in VOR were not consistent with the anatomic changes in the periphery reported by others that showed an increasing rate of peripheral hair cell and nerve fiber loss in subjects over 55 y. The poor correlation between physiological and anatomical data suggest that adaptive mechanisms in the central nervous system are important in maintaining the VOR.

Patient Use of Dietary Supplements, Home Monitoring, or Genetic Testing for Nonneovascular Age-Related Macular Degeneration

2021 ◽  
pp. 247412642198922
Author(s):  
Brittany C. Tsou ◽  
T.Y. Alvin Liu ◽  
Jun Kong ◽  
Susan B. Bressler ◽  
J. Fernando Arevalo ◽  
...  
Keyword(s):  
Genetic Testing ◽  
Macular Degeneration ◽  
Dietary Supplements ◽  
Home Monitoring ◽  
Cross Sectional Study ◽  
Age Related Macular Degeneration ◽  
Cross Sectional ◽  
Supplement Use ◽  
Age Related ◽  
Disease Study

Purpose: This work evaluated the use and type of dietary supplements and home monitoring for nonneovascular age-related macular degeneration (AMD), as well as the prevalence of genetic testing among patients with AMD. Methods: A cross-sectional study was conducted of 129 participants older than 50 years who completed self-administered questionnaires regarding usage and type of dietary supplements and home monitoring, as well as the participants’ use of genetic testing for AMD. Results: Of 91 participants with AMD, 83 (91.2%) took vitamins, including 55 (60.4%) who used an Age-Related Eye Disease Study (AREDS) or AREDS2 formulation. Of 38 without AMD, 31 (81.6%) took vitamins (difference from participants with AMD = 9.6% [95% CI, 0%-23.2%]), including 2 on an AREDS formulation. Among 82 participants with AMD who were AREDS candidates (intermediate or advanced AMD in 1 or both eyes), 51 (62.2%; 95% CI, 51.7%-72.7%) took an AREDS or AREDS2 formulation, and 31 (37.8%) did not (5 were unsure). Additionally, 50 (61.0%; 95% CI, 50.4%-71.6%) AREDS candidates did some type of home monitoring. Only 1 (1.2%; 95% CI, 0%-3.6%) underwent genetic testing for AMD. Among 9 with AMD who were not AREDS candidates, 4 (44.4%) used an AREDS formulation, 4 (44.4%) did not, and 1 (11.1%) was unsure; only 1 (11.1%) of these 9 performed home monitoring. Conclusions: Despite similar results from past surveys and AREDS2 data supporting supplement use in 2013 and home monitoring in 2014, these findings suggest about one-third of AREDS candidates do not do so, providing further support for improving education regarding appropriate supplement and home monitoring usage. Genetic testing for AMD also appears infrequent.

scholarly journals SAT0415 AGE RELATIONSHIP WITH ULTRASOUND ARTICULAR AND ENTHESEAL INVOLVEMENT IN PSORIATIC ARTHRITIS: CROSS-SECTIONAL STUDY

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1160.2-1161
Author(s):  
I. Fairushina ◽  
D. Abdulganieva ◽  
E. Kirillova ◽  
R. Abdrakipov
Keyword(s):  
Psoriatic Arthritis ◽  
Disease Activity ◽  
Power Doppler ◽  
Severity Index ◽  
Cross Sectional Study ◽  
Blood Biomarkers ◽  
Cross Sectional ◽  
Age Related ◽  
Hs Crp ◽  
Axial Involvement

Background:Detection of subclinical enthesitis and synovitis in psoriatic arthritis (PsA) is prevalent and ultrasound (US) examination is informative tool for it diagnosing. Aging positively affects degenerative changes.Objectives:To study relationship between US articular and entheseal findings with age in patients with PsA.Methods:57 patients were enrolled to study with fulfilled PsA criteria (CASPAR, 2009). Data collection: demographical, clinical (current psoriasis, axial involvement, enthesitis, dactylitis), US (synovitis count (by Grey Scale), Power Doppler(PD)+ synovitis), thickening and hypoechogenicity at enthesis, PD+ enthesitis, entheses with structural components); biological (high sensitive C-reactive protein (hsCRP), Erythrocyte Sedimentation Rate (ESR).US examination included 798 joints and 3078 entheses (bilateral shoulders, acromioclavicular joints, elbows, wrists, hips, knees, ankles; entheses at the projection of these joints (total number - 54). US entheseal findings were fixed according to consensus-based US definition and scoring for enthesitis in spondyloarthritis and PsA (OMERACT US)1.Results:In all 57 patients: male - 25 (43.9%), mean age 43.4±10.3(SD) years (y), PsA duration was 7 (3;10) y, Ps duration 10 (8; 22) y; 53 (41.1%) had axial involvement, 42 (73.7%) dactylitis, 8 (14%) clinical enthesitis, and 56 (98.2 %) skin psoriasis, Psoriasis Activity and Severity Index score 6.4 (2;14.4), Disease Activity in PsA score 18.1 (10.2;26.1), hsCRP 10.1(2.4;21.4), ESR 20 (11.3;31.5).Synovitis count increased with age noticeably (r=0.508, p<0.01), and weak correlation of PD+ synovitis (r=0.262, p=0.049) and age was found. The entheseal thickening and hypoechogenicity and structural findings increased with age respectively (r=0.345, p=0.009; r=0.337, p=0.01). There was no correlation between PD+ enthesitis and age. The assosiation between PD+ enthesitis and blood biomarkers of inflammation (hs-CRP (r=0.364, p=0.008); ESR (p=0.358, p=0.008) was found.Conclusion:Our study found significant relationship between age and US synovitis. Association between age and US entheseal involvement was noted. Only PD+ enthesitis was not related with age in comparison with other US entheseal findings. The presence of PD US signal at enthesitis in association with increased inflammatory blood biomarkers can be evaluated as the sign of disease activity regardless of age and not as age-related lesion in PsA patients.References:[1]Balint PV, Terslev L, Aegerter P et al. Reliability of a consensus-based ultrasound definition and scoring for enthesitis in spondyloarthritis and psoriatic arthritis: an OMERACT US initiative. Ann Rheum Dis.;2018;77(12):1730-1735.Disclosure of Interests:None declared

scholarly journals Association of Human Plasma Metabolomics with Delayed Dark Adaptation in Age-Related Macular Degeneration

Metabolites ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 183
Author(s):  
Kevin M Mendez ◽  
Janice Kim ◽  
Inês Laíns ◽  
Archana Nigalye ◽  
Raviv Katz ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fatty Acid ◽  
Macular Degeneration ◽  
Dark Adaptation ◽  
Ultra Performance Liquid Chromatography ◽  
Cross Sectional Study ◽  
Age Related Macular Degeneration ◽  
Cross Sectional ◽  
Age Related ◽  
Vitreoretinal Disease

The purpose of this study was to analyze the association between plasma metabolite levels and dark adaptation (DA) in age-related macular degeneration (AMD). This was a cross-sectional study including patients with AMD (early, intermediate, and late) and control subjects older than 50 years without any vitreoretinal disease. Fasting blood samples were collected and used for metabolomic profiling with ultra-performance liquid chromatography–mass spectrometry (LC-MS). Patients were also tested with the AdaptDx (MacuLogix, Middletown, PA, USA) DA extended protocol (20 min). Two measures of dark adaptation were calculated and used: rod-intercept time (RIT) and area under the dark adaptation curve (AUDAC). Associations between dark adaption and metabolite levels were tested using multilevel mixed-effects linear modelling, adjusting for age, gender, body mass index (BMI), smoking, race, AMD stage, and Age-Related Eye Disease Study (AREDS) formulation supplementation. We included a total of 71 subjects: 53 with AMD (13 early AMD, 31 intermediate AMD, and 9 late AMD) and 18 controls. Our results revealed that fatty acid-related lipids and amino acids related to glutamate and leucine, isoleucine and valine metabolism were associated with RIT (p < 0.01). Similar results were found when AUDAC was used as the outcome. Fatty acid-related lipids and amino acids are associated with DA, thus suggesting that oxidative stress and mitochondrial dysfunction likely play a role in AMD and visual impairment in this condition.

scholarly journals Cross-sectional study of the association between age-related macular degeneration and arthritis in the National Health and Nutrition Examination Survey 2005–2008

BMJ Open ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. e035805
Author(s):  
Zhuoting Zhu ◽  
Huan Liao ◽  
Sen Liu ◽  
Jian Zhang ◽  
Yifan Chen ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
National Health ◽  
Logistic Models ◽  
Cross Sectional Study ◽  
Age Related Macular Degeneration ◽  
Nutrition Examination Survey ◽  
Sectional Study ◽  
Cross Sectional ◽  
Health And Nutrition ◽  
Age Related

ObjectiveTo explore the association between age-related macular degeneration (AMD) and arthritis in a representative sample of the US population.DesignPopulation-based, cross-sectional study.SettingThe National Health and Nutrition Examination Survey (NHANES) 2005–2008.ParticipantsA total of 4813 participants aged 40 years and older with available information on AMD and arthritis in the 2005–2008 NHANES.MethodsThe status and types of arthritis were obtained from questionnaires. Non-mydriatic fundus photographs were collected. The types of AMD were assessed using the modified Wisconsin Age-Related Maculopathy Grading Classification Scheme. The association between arthritis and AMD was evaluated using logistic regression models.ResultsAfter adjusting for covariates, participants with any or early AMD had significantly lower odds of having any type of arthritis (any AMD: OR=0.56, 95% CI: 0.36–0.86; early AMD: OR=0.55, 95% CI: 0.34–0.88) or osteoarthritis (OA) (any AMD: OR=0.43, 95% CI: 0.26–0.71; early AMD: OR=0.44, 95% CI: 0.25–0.76) compared with those without AMD. When considering AMD as the outcome, significant negative associations were also found between any arthritis or OA and any (any arthritis: OR=0.64, 95% CI: 0.43–0.94; OA: OR=0.52, 95% CI: 0.33–0.82) or early AMD (any arthritis: OR=0.61, 95% CI: 0.40–0.93; OA: OR=0.51, 95% CI: 0.31–0.86) in the multivariable logistic models. There was no significant association between different types of arthritis and late AMD.ConclusionsPeople with arthritis, especially those with OA, were less likely to have AMD compared with those without arthritis and vice versa. Further studies are needed to confirm this potential protective effect of arthritis and/or arthritis treatment on AMD and to explore the underlying mechanisms.

scholarly journals Factors associated with physical, psychological and social frailty among community-dwelling older persons in Europe: a cross-sectional study of Urban Health Centres Europe (UHCE)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lizhen Ye ◽  
Liset E. M. Elstgeest ◽  
Xuxi Zhang ◽  
Tamara Alhambra-Borrás ◽  
Siok Swan Tan ◽  
...  
Keyword(s):  
Risk Factors ◽  
Urban Health ◽  
Cross Sectional Study ◽  
Community Dwelling ◽  
Household Composition ◽  
European Countries ◽  
Sectional Study ◽  
Related Condition ◽  
Cross Sectional ◽  
Age Related

Abstract Background Frailty is an age-related condition resulting in a state of increased vulnerability regarding functioning across multiple systems. It is a multidimensional concept referring to physical, psychological and social domains. The purpose of this study is to identify factors (demographic characteristics, lifestyle factors and health indicators) associated with overall frailty and physical, psychological and social frailty in community-dwelling older people from five European countries. Methods This cross-sectional study used baseline data from 2289 participants of the Urban Health Center European project in five European countries. Multivariable logistic regression models were used to assess associations of the factors with overall frailty and the three frailty domains. Results The mean age was 79.7 (SD = 5.7). Participants who were older, were female, had secondary or equivalent education, lived alone, not at risk of alcohol use, were less physically active, had multi-morbidity, were malnourished or with a higher level of medication risk, had higher odds of overall frailty (all P < 0.05). Age was not associated with psychological and social frailty; sex was not associated with social frailty; smoking and migration background was not associated with overall frailty or any of its domains. There existed an interaction effect between sex and household composition regarding social frailty (P < 0.0003). Conclusions The present study contributed new insights into the risk factors for frailty and its three domains (physical, psychological and social frailty). Nurses, physicians, public health professionals and policymakers should be aware of the risk factors of each type of frailty. Furthermore, examine these risk factors more comprehensively and consider overall frailty as well as its three domains in order to further contribute to decision-making more precisely on the prevention and management of frailty. Trial registration The intervention of the UHCE project was registered in the ISRCTN registry as ISRCTN52788952. The date of registration is 13/03/2017.

Factors responsible for age-related elevation in fasting plasma glucose: a cross-sectional study in Japanese men

Metabolism ◽  
2008 ◽  
Vol 57 (2) ◽  
pp. 299-303 ◽  
Author(s):  
Kentaro Toyoda ◽  
Mitsuo Fukushima ◽  
Rie Mitsui ◽  
Norio Harada ◽  
Hidehiko Suzuki ◽  
...  
Keyword(s):  
Plasma Glucose ◽  
Fasting Plasma Glucose ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Japanese Men ◽  
Fasting Plasma ◽  
Age Related

scholarly journals Age-related variation in mobility independence among wheelchair users with spinal cord injury: A cross-sectional study

2016 ◽  
Vol 39 (2) ◽  
pp. 180-189 ◽  
Author(s):  
Timo Hinrichs ◽  
Veronika Lay ◽  
Ursina Arnet ◽  
Inge Eriks-Hoogland ◽  
Hans Georg Koch ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Wheelchair Users ◽  
Related Variation ◽  
Age Related ◽  
Cord Injury

Body image, self-perception and satisfaction among girls with Turner syndrome-A prospective cross-sectional study

2021 ◽  
Author(s):  
Nandini Vijayakanthi ◽  
David J Marcus ◽  
Sobha P Fritz ◽  
Yijin Xiang ◽  
Doris Fadoju
Keyword(s):  
Body Image ◽  
Turner Syndrome ◽  
Normal Population ◽  
Cross Sectional Study ◽  
Delayed Puberty ◽  
Self Perception ◽  
Satisfaction Scale ◽  
Cross Sectional ◽  
Population Norms ◽  
Final Adult Height

Abstract Objectives Delayed puberty & short stature in girls with Turner syndrome(TS) can lead to low body image, self-esteem & satisfaction. We aimed to evaluate body image, self-perception, and satisfaction among girls with TS using Multi-Dimensional Body Image Self Relations Questionnaire -Appearance Scale (MBSRQ-AS). Methods Patients with karyotype-proven diagnosis of TS between 15-21 years were included after they achieved final adult height. We used MBSRQ-AS instrument with 5 sub-scales: Appearance Evaluation(AE), Appearance Orientation(AO), Body Areas Satisfaction Scale(BASS), Overweight Preoccupation(OWP) and Self Classified Weight(SCW) sub-scales. Mean scores were compared to available sex matched population norms & compared between different sub-cohorts. Results Of 59 eligible girls, 37 girls agreed to participate with mean age : 17.35 ±1.6 years. Turner girls had significantly lower scores compared to sex-matched population norms in AO [mean(SD): 3.32(0.42) vs 3.91(0.6)]; (p&lt;0.001) and SCW [mean(SD): 3.26(0.71) vs 3.57(0.73); (p=0.01)] sub-scales. In contrast, they had slightly higher scores in BASS [ mean(SD): 3.38(0.74) vs 3.23(0.74); (p=0.23)] & OWP [mean(SD): 3.12(0.39) vs 3.03(0.96); (p=0.21)] sub-scales though not statistically significant. Girls with classic 45 X karyotype and those who were overweight/obese had lower scores in AE & AO sub-scales compared to normal population (p&lt;0.05). Conclusion Compared to sex-matched population norms, Turner girls are not reporting negative effects due to their appearance & report general satisfaction with most areas of their body; however, Turner girls with classic karyotype or who were obese/overweight were generally unhappy with their physical appearance. They also seem to not focus their attention on their appearance.

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