Mitochondrial function and redox control in the aging eye: Role of MsrA and other repair systems in cataract and macular degenerations

Brennan, Lisa A.; Kantorow, Marc

doi:10.1016/j.exer.2008.05.018

Cited by 164 publications

(149 citation statements)

References 94 publications

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“…These are associated with progressive damage to the pigment cells of the substantial nigra midbrain: cells which are responsible for the synthesis of dopamine under physiological conditions, which they use as a neurotransmitter [44,45,46,47,48,49]. Patients with Alzheimer's and Parkinson's disease are more likely to suffer from glaucoma than healthy people, and severe adverse reactions location biochemical, i.e.…”

Section: Discussionmentioning

confidence: 99%

The role of Cat -262C/T, GPX1 Pro198Leu and Sod1+35A/C gene polymorphisms in a development of primary open-angle glaucoma in a Polish population

Malinowska¹,

Kowalski²,

Szaflik³

et al. 2016

pjp

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The development of glaucoma may be connected with a long-term exposure to oxidative stress caused by free radical (ROS). The main aim of this work was an analysis of associations of Cat-262C/T, GPX1 Pro198Leu and SOD1 35 A/C gene polymorphisms of antioxidant enzymes with a risk of open-angle glaucoma (POAG) in a Polish population. DNA samples collected from 209 patients with POAG and 191 healthy controls were used in this study. Polymorphisms were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). We found that the +35A/C polymorphisms of SOD1 were not associated with a risk of POAG. We found that C/T genotype (1-GPX1Pro198Leu, 2-Cat C262T) is associated with increased risk of open angle glaucoma (1-OR = 2.24; 95% CI: 1.46-3.44; p = 0.0001, 2-OR = 2.16; 95% CI: 1.35-3.34; p = 0.001). We also found that T/T genotype is a risk factor for progression of POAG (1-OR = 3.86; 95% Cl: 1.36-10.96; p = 0.007, 2-OR = 6.37; 95% CI: 1.39-29.28; p = 0.007). Finally our data suggest that gene polymorphisms of GPX1 Pro198Leu and CAT C262T may have a protective role in the development of primary open-angle glaucoma in a Polish population.

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Section: Discussionmentioning

confidence: 99%

The role of Cat -262C/T, GPX1 Pro198Leu and Sod1+35A/C gene polymorphisms in a development of primary open-angle glaucoma in a Polish population

Malinowska¹,

Kowalski²,

Szaflik³

et al. 2016

pjp

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“…In this context, age-related cataract (ARC) is a pathological lesion that occurs with aging in humans, other mammals, and birds (Slatter et al 1983;Williams et al 2004;Wolf et al 2005;Zubenko et al 2007) and is at least partly linked to lens oxidative damage (Davies 1995;Spector 1995;Reddy et al 2001;Wolf et al 2005;Pendergrass et al 2006;Brennan and Kantorow 2009). We previously have shown a correlation between longevity in human nonagenarians and their delay in developing ARC (Zubenko et al 2007), and also demonstrated that small GH-R, IGF-1 deficient mutant dwarf mice have both delayed ARC development and extended life spans (Wolf et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Age-related cataract in dogs: a biomarker for life span and its relation to body size

Urfer

Greer

Wolf

2010

AGE

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Clinical data from 72 dog breeds of varying size and life expectancy were grouped according to breed body mass and tested for prevalence at ages 4 to 5, ages 7 to 10, and lifetime incidence of non-hereditary, age-related cataract (ARC). The incidence of ARC was found to be directly related to the relative life expectancies in the breed groups: The smallest dog breeds had a lower ARC prevalence between ages 4 and 5 than mid-size breeds and these, in turn, a lower prevalence than the giant breeds. A similar sequence was evident for ages 7 to 10 and for overall lifetime incidence of ARC. These differences became more significant when comparing small and giant breeds only. We could also confirm the inverse relationship between body size and life expectancy in these same sets of dog breeds. Our results show that body size, life expectancy, and ARC incidence are interrelated in dogs. Given that ARC has been shown to be at least partially caused by oxidative damage to lens epithelial cells and the internal lens, we suggest that it can be considered not only as a general biomarker for life expectancy in the canine and possibly other species, but also for the systemic damages produced by reactive oxygen species. This suggests new approaches to examine the gene expression pathways affecting the above-noted linkages.

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“…Lens researchers generally consider that age-related cataracts (ARCs) are strongly associated with lens oxidation and aging (16)(17)(18). Although a direct association between cataract …”

Section: Discussionmentioning

confidence: 99%

Attenuation of oxygen fluctuation-induced endoplasmic reticulum stress in human lens epithelial cells

Zheng

Chen

et al. 2015

Experimental and Therapeutic Medicine

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Abstract. Cataractogenic stresses are associated with the induction of endoplasmic reticulum (ER) stress. However, little is known about oxygen (O 2 )-induced ER stress in the lens. Cataract research has focused on elevated levels of O 2 in lens epithelial cells (LECs). Excessive levels or a lack of O 2 are known to induce ER stress whereas chronic ER stress activates the unfolded protein response (UPR). The present study investigated the hypothesis that the fluctuation of O 2 levels induces a UPR, and may be controlled by maintaining human LECs (hLECs) in a specific concentration of O 2 . Human LECs were cultured in different atmospheric levels of O 2 . Hypoxic conditions were determined by the level of hypoxia-inducible factor (HIF)-1α. 2',7'-Dichlorodihydrofluorescein diacetate and ethidium homodimer-1 staining were conducted to detect reactive oxygen species (ROS) and cell death, respectively. Protein blot analyses were performed with antibodies specific to antioxidant and UPR-specific proteins. Reverse transcription-quantitatative polymerase chain reaction assays were performed to quantify the mRNA levels of activated NF-E2-related factor 2 (Nrf2) and kelch-like ECH-associated protein 1 (Keap1). The treatment of human LECs with 0 and 20% atmospheric O 2 activated Nrf2/Keap1. The LECs shifted to 1% atmospheric O 2 from 0, 4 or 20% for 24 h showed decreased levels of Keap1. By contrast, hLECs cultured in 1% atmospheric O 2 for 24 h and then shifted to 0, 4 or 20% O 2 exhibited a significant upregulation of Nrf2. These results suggest that oxidative stress proteins were not expressed in a 1% O 2 environment. The O 2 levels in the culture medium were equilibrated within 2 h in the cell culture plates. These results showed that an appropriate oxygen environment for the culture of LECs is ~1 % atmospheric O 2 . Either 0 or 20% of atmospheric O 2 activated the UPR and the Nrf2/Keap1-mediated antioxidant system in LECs and chronic exposure to O 2 fluctuation led to ROS production and cell death. This study revealed that O 2 fluctuation-induced UPR/ER stress could be prevented by maintaining the cells in a 1% O 2 environment.

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Mitochondrial function and redox control in the aging eye: Role of MsrA and other repair systems in cataract and macular degenerations

Cited by 164 publications

References 94 publications

The role of Cat -262C/T, GPX1 Pro198Leu and Sod1+35A/C gene polymorphisms in a development of primary open-angle glaucoma in a Polish population

The role of Cat -262C/T, GPX1 Pro198Leu and Sod1+35A/C gene polymorphisms in a development of primary open-angle glaucoma in a Polish population

Age-related cataract in dogs: a biomarker for life span and its relation to body size

Attenuation of oxygen fluctuation-induced endoplasmic reticulum stress in human lens epithelial cells

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