Traffic-related air pollutants increase the risk for age-related macular degeneration

2019 ◽  
Vol 67 (7) ◽  
pp. 1076-1081 ◽  
Author(s):  
Kuang-Hsi Chang ◽  
Po-Yuan Hsu ◽  
Chun-Ju Lin ◽  
Cheng-Li Lin ◽  
Suh-Hang Hank Juo ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Population Based ◽  
Air Pollutant ◽  
Age Related Macular Degeneration ◽  
Cox Proportional Hazard ◽  
Age Related ◽  
Increased Risk ◽  
Taiwan National Health Insurance ◽  
Cox Proportional Hazard Regression ◽  
Year 2000

The aim of this study was to investigate whether ambient nitrogen dioxide (NO2) and carbon monoxide (CO) increase the risk for age-related macular degeneration (AMD). This is a longitudinal population-based study using the data on Taiwan National Health Insurance Program between year 2000 and 2010. From the nationwide dataset, we enrolled subjects aged 50 or older and the annually total NO2 and CO exposure was calculated from 1998 to 2010 for each subject. The Cox proportional hazard regression was used to estimate the HRs with adjustment for other variables. A total of 39,819 AMD-free residents were enrolled, and 1442 participants developed AMD during the 11 -year follow-up. Compared with the lowest exposure quartile, the highest quartile of each air pollutant was associated with an increased risk for AMD. The adjusted HR was 1.91 (95% CI 1.64 to 2.23, p<0.001) for the highest NO2 quartile, and was 1.84 (95% CI 1.5 to 2.15, p<0.001) for the highest CO quartile. In this study, chronic exposure to the highest quartile of ambient NO2 or CO significantly increases the risk for AMD.

scholarly journals Plasma Lutein, a Nutritional Biomarker for Development of Advanced Age-Related Macular Degeneration: The Alienor Study

Nutrients ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 2047
Author(s):  
Bénédicte M. J. Merle ◽  
Audrey Cougnard-Grégoire ◽  
Jean-François Korobelnik ◽  
Wolfgang Schalch ◽  
Stéphane Etheve ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
High Performance ◽  
Population Based ◽  
Age Related Macular Degeneration ◽  
Cox Proportional Hazard ◽  
Age Related ◽  
Cox Proportional Hazard Models ◽  
Adjusted Model ◽  
Reduced Risk

Lutein and zeaxanthin may lower the risk of age-related macular degeneration (AMD). We evaluated the associations of plasma lutein and zeaxanthin with the incidence of advanced AMD in the Alienor study (Antioxydants Lipides Essentiels Nutrition et Maladies Oculaires). Alienor study is a prospective population-based cohort of 963 residents of Bordeaux, France, who were 73 years or older at baseline (2006–2008). The present study included 609 participants with complete ophthalmologic and plasma carotenoids data. Examinations were performed every two years over an eight-year period (2006 to 2017). Plasma lutein and zeaxanthin were determined at baseline from fasting blood samples using high-performance liquid chromatography. Cox proportional hazard models were used to assess associations between plasma lutein, zeaxanthin, and their (total cholesterol (TC) + triglycerides (TG)) ratios with AMD. Among the 609 included participants, 54 developed advanced incident AMD during a median follow-up time of 7.6 years (range 0.7 to 10.4). Participants with higher plasma lutein had a reduced risk for incident advanced AMD in the fully adjusted model (HR = 0.63 per 1-SD increase (95% CI, 0.41–0.97), p = 0.03). A similar association was observed using the lutein/(TC + TG) ratio (HR = 0.59 (95% CI, 0.39–0.90), p = 0.01). No associations were evidenced for other carotenoids. Higher plasma lutein was associated with a 37% reduced risk of incident advanced AMD.

scholarly journals Association Between Age‐Related Macular Degeneration and Risk of Heart Failure: A Population‐Based Nested Case‐Control Study

2021 ◽  
Author(s):  
Chao‐Chien Chang ◽  
Chi‐Hung Huang ◽  
Yu‐Ching Chou ◽  
Jin‐Yin Chang ◽  
Chien‐An Sun
Keyword(s):  
Heart Failure ◽  
Macular Degeneration ◽  
Case Control Study ◽  
Population Based ◽  
Case Control ◽  
Age Related Macular Degeneration ◽  
Age Related ◽  
Increased Risk ◽  
Nested Case Control ◽  
Control Study

Background Heart failure (HF) is a major health problem worldwide because of its high morbidity and mortality. Recently, the role of the microvasculature in HF has gained more attention. Age‐related macular degeneration (AMD) is manifested through geographic atrophy or the development of neovascularization. However, there are limited data on investigations about the association between AMD and HF. The purpose of this study was to examine the association of AMD with the risk of HF in a large population‐based cohort of men and women. Methods and Results A nested case‐control study using Taiwan’s National Health Insurance Research Database was conducted between 2000 and 2012. Newly diagnosed heart failure cases (n=13 721) and matched controls (n=54 884) in the database were recruited. Patients who had ≥2 clinical visits with a diagnosis of AMD at least 1 year before the diagnosis of HF were identified as patients with AMD. Conditional logistic regressions were performed to calculate odds ratios and 95% CIs to assess the association between AMD and risk of HF. AMD was associated with a 1.58‐fold increased risk of HF (95% CI, 1.16–1.87) ( P <0.001) after adjustment for potential confounders. This significant association was evident in both nonexudative and exudative AMD subgroups. Conclusions Our study provides evidence that AMD was associated with an increased risk of HF. Further molecular and pathophysiological studies are needed to clarify the underlying pathophysiological mechanisms behind the association of AMD with HF.

scholarly journals Increased Risk of Age-Related Macular Degeneration with Chronic Hepatitis C Virus Infection: A Nationwide Population-Based Propensity Score-Matched Cohort Study in Taiwan

Viruses ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 790
Author(s):  
Chih-Ching Yeh ◽  
Meei-Maan Wu ◽  
Chia-Min Wu ◽  
Fung-Chang Sung ◽  
Chih-Hsin Muo ◽  
...  
Keyword(s):  
Cohort Study ◽  
Propensity Score ◽  
Macular Degeneration ◽  
Population Based ◽  
Hcv Infection ◽  
Age Related Macular Degeneration ◽  
Age Related ◽  
Increased Risk ◽  
Chronic Hcv Infection ◽  
Chronic Hcv

Studies evaluating the association between age-related macular degeneration (AMD) risk and HCV infection are scant. In this population-based cohort study, 13,300 patients newly diagnosed as having HCV (HCV cohort) and 26,600 propensity score-matched patients without HCV (non-HCV cohort) were identified from the Taiwan National Health Insurance Research Database between 2000 and 2013. Furthermore, 1,983 patients with HCV who received pegylated interferon and ribavirin treatment (HCV-treated cohort) and propensity score-matched patients with HCV (matched at a ratio of 1:2) who did not receive this treatment (HCV-untreated cohort) were selected from the HCV cohort. Cox proportional hazards regression models were used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) associated with the risk of AMD in the HCV and non-HCV cohorts. The adjusted HR (aHR) for AMD in the HCV cohort was 1.22 (95% CI = 1.09–1.35). This significant association was observed only for nonexudative AMD (aHR = 1.22, 95% CI = 1.09–1.37). Compared with the HCV-untreated cohort, the HCV-treated cohort showed no significant association with any type of AMD (aHR = 1.07, 95% CI = 0.81–1.43). Age and sex did not modify AMD development after the exposure and treatment of chronic HCV infection. Our findings revealed that patients with chronic HCV infection had an increased risk of AMD.

scholarly journals Association of metformin and development of dry age-related macular degeneration in a U.S. insurance claims database

2021 ◽  
pp. 112067212199728
Author(s):  
Emily A Eton ◽  
Thomas J Wubben ◽  
Cagri G Besirli ◽  
Peiying Hua ◽  
Brendan McGeehan ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Proportional Hazard ◽  
Insurance Claims ◽  
Claims Database ◽  
Cumulative Dosage ◽  
Cox Proportional Hazard ◽  
Age Related ◽  
Prior Use ◽  
Cox Proportional Hazard Regression

Purpose: To assess whether metformin is associated with dry age-related macular degeneration (dAMD) development. Methods: In this retrospective cohort study, patients enrolled in a nationwide U.S. medical insurance claims database from 2002 to 2016 were included if they had diabetes mellitus, were ⩾55 years old, and were enrolled for ⩾2 years without a prior AMD diagnosis. The primary exposure was metformin use analyzed as either active or prior use or cumulative metformin dosage over the study period. A time updating Cox proportional hazard regression was used to estimate the hazard ratio of dAMD incidence with metformin exposure. Results: Among 1,007,226 diabetic enrollees, 53.3% were female and 66.4% were white with a mean hemoglobin A1c of 6.8%. Of eligible enrollees, 166,115 (16.5%) were taking metformin at the index date. Over the study period, 29,818 (3.0%) participants developed dAMD. In the active versus prior use of metformin model, active use conferred an increased hazard of developing dAMD (HR, 1.08; 95% CI, 1.04–1.12) while prior use had a decreased hazard (HR, 0.95; 95% CI 0.92–0.98). The cumulative metformin dosage model showed a significant trend toward increased hazard of dAMD incidence with increasing cumulative dosage ( p < 0.001), with the lowest dosage quartile having decreased hazard of dAMD incidence (HR, 0.95; 95% CI, 0.91–0.99) and the highest having increased hazard (HR, 1.07; 95% CI, 1.01–1.13). Conclusions: Small, conflicting associations between metformin exposure and development of dAMD were observed depending on cumulative dosage and whether drug use was active, suggesting metformin did not substantially affect the development of dAMD.

scholarly journals Medical Compliance of Fibrate and the Decreased Risk of Age-Related Macular Degeneration in Dyslipidemia-Related Diseases: A Population-Based Cohort Study

2021 ◽  
Vol 18 (1) ◽  
pp. 301
Author(s):  
Kai Wang ◽  
Ming-Ju Hsieh ◽  
Hsiang-Wen Chien ◽  
Chia-Yi Lee ◽  
Chao-Bin Yeh ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Population Based ◽  
Age Related Macular Degeneration ◽  
Diagnostic Code ◽  
Control Groups ◽  
Age Related ◽  
Dry Amd ◽  
Medical Compliance ◽  
Cox Proportional Hazard Regression ◽  
And Control

The purpose of the current study is to evaluate the incidence of age-related macular degeneration (AMD) in dyslipidemia-related diseases with or without the use of fibrate. Patients were defined as dyslipidemia-related diseases according to the diagnostic code and lab exam arrangement, then the population was divided into those with fibrate application and those without via 1:2 ratios of propensity-score matching. The primary outcome is the development of AMD after dyslipidemia-related diseases by the Cox proportional hazard regression. Besides, the relationship between the medical compliance of fibrate, presented as medical possession ratio (MPR), and the AMD development was also analyzed. A total of 22,917 patients and 45,834 individuals were enrolled in the study and control groups. There were 572 and 1181 events of any AMD development in the study and control groups which showed identical risk of AMD (aHR: 0.94, 95% CI: 0.85–1.04). However, a reduced risk of any AMD was found in those patients reached a baseline MPR more than 20% (aHR: 0.729, 95% CI: 0.599–0.887, p = 0.0016) and overall MPR more than 5% three years after the diagnosis of dyslipidemia-related diseases (aHR: 0.712, 95% CI: 0.557–0.909, p = 0.0065). Besides, a lower risk of dry-AMD was also found in those patients with the above conditions (aHR: 0.736, 95% CI: 0.599–0.906, p = 0.0038 and aHR: 0.721, 95% CI: 0.557–0.934, p = 0.0133, respectively). In conclusion, the use of fibrate with fair initial medical compliance will decrease the incidence of AMD in patients with dyslipidemia-related diseases, especially for the development of dry-AMD.

scholarly journals Increased risk of Alzheimer’s disease among patients with age-related macular degeneration: A nationwide population-based study

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0250440
Author(s):  
Li-Yen Wen ◽  
Lei Wan ◽  
Jung-Nien Lai ◽  
Chih Sheng Chen ◽  
Jamie Jiin-Yi Chen ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Macular Degeneration ◽  
Population Based ◽  
Age Related Macular Degeneration ◽  
Chronic Obstructive ◽  
Research Database ◽  
Age Group ◽  
Age Related ◽  
Increased Risk

Objective This study aimed to investigate the risk of Alzheimer’s disease among patients with age-related macular degeneration and its association with confounding comorbidities. Method This was a population-based, retrospective cohort study. By accessing data from the National Health Insurance Research Database of Taiwan, we identified 10,578 patients aged 50–100 years who were newly diagnosed with age-related macular degeneration between 2000 and 2012 and 10,578 non- age-related macular degeneration individuals. The comorbidities assessed were osteoporosis, diabetes, cirrhosis, cerebrovascular disease, chronic kidney disease, hypertension, hyperlipidemia, coronary artery disease, and chronic obstructive pulmonary disease. Results Patients with age-related macular degeneration had a 1.23-fold increased risk of their condition advancing to Alzheimer’s disease (aHR = 1.23, 95% CI = 1.04–1.46). The younger patients were diagnosed with age-related macular degeneration, the more likely patients got Alzheimer’s disease (50–64 age group: aHR = 1.97, 95% CI = 1.04–3.73; 65–79 age group: aHR = 1.27, 95% CI = 1.02–1.58; 80–100 age group: aHR = 1.06, 95% CI = 0.78–1.45). In addition, there were significantly higher risks of Alzheimer’s disease for patients with cirrhosis (aHR = 1.50, 95% CI = 1.09–2.06) in the age-related macular degeneration cohort than in the non-age-related macular degeneration cohort. Conclusion Patients with age-related macular degeneration may exhibit a higher risk of Alzheimer’s disease than people without age-related macular degeneration.

Gene polymorphisms associated with an increased risk of exudative age-related macular degeneration in a Spanish population

2021 ◽  
pp. 112067212110026
Author(s):  
Pablo Gili ◽  
Leyre Lloreda Martín ◽  
José-Carlos Martín-Rodrigo ◽  
Naon Kim-Yeon ◽  
Laura Modamio-Gardeta ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Gene Polymorphisms ◽  
Age Related Macular Degeneration ◽  
Spanish Population ◽  
Healthy Controls ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Exudative Amd ◽  
Age Related ◽  
Increased Risk

Purpose: To identify the association between single-nucleotide polymorphisms (SNPs) in CFH, ARMS2, HTRA1, CFB, C2, and C3 genes and exudative age-related macular degeneration (AMD) in a Spanish population. Methods: In 187 exudative AMD patients and 196 healthy controls (61% women, mean age 75 years), 12 SNPs as risk factors for AMD in CFH (rs1410996, rs1061170, r380390), ARMS2 (rs10490924, rs10490923), HTRA1 (rs11200638), CFB (rs641153), C2 (rs547154, rs9332739), and C3 (rs147859257, rs2230199, rs1047286) genes were analyzed. Results: The G allele was the most frequent in CFH gene (rs1410996) with a 7-fold increased risk of AMD (OR 7.69, 95% CI 3.17–18.69), whereas carriers of C allele in CFH (rs1061170) showed a 3-fold increased risk for AMD (OR 3.22, 95% CI 1.93–5.40). In CFH (rs380390), the presence of G allele increased the risk for AMD by 2-fold (OR 2.52, 95% CI 1.47–4.30). In ARMS2 (rs10490924), the T-allele was associated with an almost 5-fold increased risk (OR 5.49, 95% CI 3.23–9.31). The A allele in HTRA1 (rs11200638) was more prevalent in AMD versus controls (OR 6.44, 95% CI 3.62–11.47). In C2 gene (rs9332739) the presence of C increased risk for AMD by 3-fold (OR 3.10, 95% CI 1.06–9.06). Conclusion: SNPs in CFH, ARMS2, HTRA1, and C2 genes were associated in our study with an increased risk for exudative AMD in Spanish patients.

Elevated apolipoprotein A1 and HDL cholesterol associated with age-related macular degeneration: two population cohorts

2021 ◽  
Author(s):  
Liv Tybjærg Nordestgaard ◽  
Anne Tybjærg-Hansen ◽  
Ruth Frikke-Schmidt ◽  
Børge Grønne Nordestgaard
Keyword(s):  
Macular Degeneration ◽  
Ldl Cholesterol ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Age Related Macular Degeneration ◽  
Apolipoprotein A1 ◽  
Age Related ◽  
Hazard Ratios ◽  
Increased Risk ◽  
Plasma Apolipoprotein

Abstract Context To enable prevention and treatment of age-related macular degeneration(AMD), understanding risk factors for AMD is important. Objective We tested the hypotheses that elevated plasma apolipoprotein A1 and high-density lipoprotein(HDL) cholesterol, and low levels of low-density lipoprotein(LDL) cholesterol, are associated with increased risk of AMD. Design and Setting From the Danish general population, we studied 106,703 and 16,032 individuals in the Copenhagen General Population Study(CGPS) and the Copenhagen City Heart Study(CCHS) with median follow-up of respectively 9 and 32 years. Main Outcome Measures 1,787 AMD in CGPS and 206 in CCHS. Results Higher concentrations of plasma apolipoprotein A1 and HDL cholesterol, and lower concentrations of LDL cholesterol, were associated with higher risk of AMD in CGPS. After multifactorial adjustment, individuals in the highest versus lowest quartile of plasma apolipoprotein A1 and HDL cholesterol had hazard ratios for AMD of 1.40(95%CI:1.20-1.63) and 1.22(1.03-1.45). Corresponding hazard ratios for individuals in the lowest versus highest quartile of LDL cholesterol were 1.18(1.02-1.37). Per 100 mg/dL higher plasma apolipoprotein A1, 1 mmol/L(39 mg/dL) higher HDL, and 1 mmol/L(39mmol/L) lower LDL cholesterol, the hazard ratios for AMD were 1.53(1.31-1.80), 1.19(1.07-1.32), and 1.05(1.00-1.11), respectively, with similar results across strata of different risk factors. Higher concentrations of HDL cholesterol were also associated with higher risk of AMD in the CCHS. Conclusion Elevated plasma apolipoprotein A1 and HDL cholesterol, and lower LDL cholesterol, are associated with increased risk of age-related macular degeneration.

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