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167 results on '"Vollrath, D."'

1. Hypothesis-independent pathway analysis implicates GABA and Acetyl-CoA metabolism in primary open-angle glaucoma and normal-pressure glaucoma

Author

Bailey, JNC, Yaspan, BL, Pasquale, LR, Hauser, MA, Kang, JH, Loomis, SJ, Brilliant, M, Budenz, DL, Christen, WG, Fingert, J, Gaasterland, D, Gaasterland, T, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, McCarty, CA, Moroi, SE, Richards, JE, Realini, T, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Wollstein, G, Zack, DJ, Zhang, K, Pericak-Vance, MA, Allingham, RR, Weinreb, RN, Haines, JL, and Wiggs, JL

Subjects
Genetics & Heredity, Genetics, Complementary and Alternative Medicine, Paediatrics and Reproductive Medicine
Abstract

Primary open-angle glaucoma (POAG) is a leading cause of blindness worldwide. Using genome-wide association single-nucleotide polymorphism data from the Glaucoma Genes and Environment study and National Eye Institute Glaucoma Human Genetics Collaboration comprising 3,108 cases and 3,430 controls, we assessed biologic pathways as annotated in the KEGG database for association with risk of POAG. After correction for genic overlap among pathways, we found 4 pathways, butanoate metabolism (hsa00650), hematopoietic cell lineage (hsa04640), lysine degradation (hsa00310) and basal transcription factors (hsa03022) related to POAG with permuted p

Published
2014

2. Vascular tone pathway polymorphisms in relation to primary open-angle glaucoma

Author

Kang, JH, Loomis, SJ, Yaspan, BL, Bailey, JC, Weinreb, RN, Lee, RK, Lichter, PR, Budenz, DL, Liu, Y, Realini, T, Gaasterland, D, Gaasterland, T, Friedman, DS, McCarty, CA, Moroi, SE, Olson, L, Schuman, JS, Singh, K, Vollrath, D, Wollstein, G, Zack, DJ, Brilliant, M, Sit, AJ, Christen, WG, Fingert, J, Forman, JP, Buys, ES, Kraft, P, Zhang, K, Allingham, RR, Pericak-Vance, MA, Richards, JE, Hauser, MA, Haines, JL, Wiggs, JL, and Pasquale, LR

Subjects
Biomedical and Clinical Sciences, Ophthalmology and Optometry, Aging, Neurosciences, Genetics, Eye Disease and Disorders of Vision, Neurodegenerative, Clinical Research, Cardiovascular, AMP-Activated Protein Kinases, Aged, Case-Control Studies, Caveolin 1, Dynamin II, Dynamins, Endothelium, Vascular, Female, GTP-Binding Proteins, Genetic Predisposition to Disease, Genotype, Glaucoma, Open-Angle, Humans, Inositol 1, 4, 5-Trisphosphate Receptors, Intraocular Pressure, Male, Middle Aged, Muscle, Smooth, Vascular, Nitric Oxide Synthase Type III, Polymorphism, Single Nucleotide, Receptor, Endothelin B, Receptors, Endothelin, Signal Transduction, Clinical Sciences, Immunology, Opthalmology and Optometry, Ophthalmology & Optometry, Ophthalmology and optometry
Abstract

AimsVascular perfusion may be impaired in primary open-angle glaucoma (POAG); thus, we evaluated a panel of markers in vascular tone-regulating genes in relation to POAG.MethodsWe used Illumina 660W-Quad array genotype data and pooled P-values from 3108 POAG cases and 3430 controls from the combined National Eye Institute Glaucoma Human Genetics Collaboration consortium and Glaucoma Genes and Environment studies. Using information from previous literature and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, we compiled single-nucleotide polymorphisms (SNPs) in 186 vascular tone-regulating genes. We used the 'Pathway Analysis by Randomization Incorporating Structure' analysis software, which performed 1000 permutations to compare the overall pathway and selected genes with comparable randomly generated pathways and genes in their association with POAG.ResultsThe vascular tone pathway was not associated with POAG overall or POAG subtypes, defined by the type of visual field loss (early paracentral loss (n=224 cases) or only peripheral loss (n=993 cases)) (permuted P≥0.20). In gene-based analyses, eight were associated with POAG overall at permuted P

Published
2014

3. Genome Maps 7: The Human Transcript Map

Author

Jasny, Barbara R., Schuler, G. D., Boguski, M. S., Hudson, T. J., Hui, L., Ma, J., Castle, A. B., Wu, X., Silva, J., Nusbaum, H. C., Birren, B. B., Slonim, D. K., Rozen, S., Stein, L. D., Page, D., Lander, E. S., Stewart, E. A., Aggarwal, A., Bajorek, E., Brady, S., Chu, A., Fang, N., Hadley, D., Harris, M., Hussain, S., Maratukulam, A., Perkins, S., Piercy, M., Qin, F., Reif, T., Sanders, C., She, X., Sun, W. L., Tabar, P., Voyticky, S., Mader, C., McKusick, K. B., Fan, J. B., Cowles, S., Quackenbush, J., Vollrath, D., Myers, R. M., Cox, D. R., Butler, A., Clee, C., Dibling, T., East, C., Edwards, C., Garrett, C., Green, L., Harrison, P., Hicks, A., Holloway, E., Ranby, S., MacGilvery, A., Mungall, A., Peck, A., Wilmer, T., Soderlund, C., Rice, K., Dunham, I., Bentley, D., Deloukas, P., Gyapay, G., Chiannilkulchai, N., Fizames, C., Bentolila, S., Duprat, S., Vega-Czarny, N., Muselet, D., Drouot, N., Morissette, J., Beckmann, J., Weissenbach., J., James, M. R., White, R. E., Thangarajah, T., Day, P. J. R., Goodfellow, P. N., Schmitt, K., Walter, N. A. R., Berry, R., Iorio, K. R., Sikela, J. M., Polymeropoulos, M. H., Torres, R., Ide, S. S. E., Dehejia, A., Houlgatte, R., Auffray, C., Adams, M. D., Phillips, C., Brandon, R., Sandusky, M., Venter, J. C., Seki, N., Nagase, T., Ishikawa, K., Nomura, N., Rodriguez-Tome, P., Matise, T. C., Lee, W. Y., Swanson, K. A., and Hudson, J. R.

Published
1996

4. A Gene Map of the Human Genome

Author

Schuler, G. D., Boguski, M. S., Stewart, E. A., Stein, L. D., Gyapay, G., Rice, K., White, R. E., Rodriguez-Tomé, P., Aggarwal, A., Bajorek, E., Bentolila, S., Birren, B. B., Butler, A., Castle, A. B., Chiannilkulchai, N., Chu, A., Clee, C., Cowles, S., Day, P. J. R., Dibling, T., Drouot, N., Dunham, I., Duprat, S., East, C., Edwards, C., Fang, N., Fizames, C., Garrett, C., Green, L., Hadley, D., Harris, M., Harrison, P., Brady, S., Hicks, A., Holloway, E., Hui, L., Hussain, S., Ma, J., MacGilvery, A., Mader, C., Maratukulam, A., Matise, T. C., McKusick, K. B., Morissette, J., Mungall, A., Muselet, D., Nusbaum, H. C., Page, D. C., Peck, A., Perkins, S., Piercy, M., Qin, F., Quackenbush, J., Ranby, S., Reif, T., Rozen, S., Sanders, C., She, X., Silva, J., Slonim, D. K., Soderlund, C., Tabar, P., Thangarajah, T., Vega-Czarny, N., Vollrath, D., Voyticky, S., Wilmer, T., Wu, X., Adams, M. D., Aufiray, C., Walter, N. A. R., Brandon, R., Dehejia, A., Goodfellow, P. N., Houlgatte, R., Hudson, J. R., Ide, S. E., Iorio, K. R., Lee, W. Y., Seki, N., Nagase, T., Ishikawa, K., Nomura, N., Phillips, C., Polymeropoulos, M. H., Sandusky, M., Schmitt, K., Berry, R., Swanson, K., Torres, R., Venter, J. C., Sikela, J. M., Beckmann, J. S., Weissenbach, J., Myers, R. M., Cox, D. R., James, M. R., Bentley, D., Deloukas, P., Lander, E. S., and Hudson, T. J.

Published
1996

8. Author Correction: Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases

Author

Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Souzeau, E, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Wang, JJ, Rochtchina, E, Attia, J, Scott, R, Holliday, EG, Baird, PN, Xie, J, Inouye, M, Viswanathan, A, Sim, X, Allingham, RR, Brilliant, MH, Budenz, DL, Christen, WG, Fingert, J, Friedman, DS, Gaasterland, D, Gaasterland, T, Hauser, MA, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, Loomis, SJ, Moroi, SE, Pericak-Vance, MA, Realini, A, Richards, JE, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Weinreb, RN, Wollstein, G, Zack, DJ, Zhang, K, Donnelly, P, Barroso, I, Blackwell, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Su, Z, Vukcevic, D, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P, Grp, BMES-G, Consortium, N, and Control, WTC

Subjects
Lumican, genetic structures, Fibrillin-1, General Physics and Astronomy, Gene Expression, Q1, Corneal Diseases, Marfan Syndrome, Cornea, ADAMTS Proteins, Myopia, Link (knot theory), lcsh:Science, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Corneal Dystrophies, Hereditary, Multidisciplinary, Eye Diseases, Hereditary, symbols, NEIGHBORHOOD consortium, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Proteoglycans, Decorin, Glaucoma, Open-Angle, Science, Quantitative Trait Loci, Computational biology, Biology, Keratoconus, Polymorphism, Single Nucleotide, General Biochemistry, Genetics and Molecular Biology, White People, Article, symbols.namesake, Transforming Growth Factor beta2, Quantitative Trait, Heritable, Asian People, Genome-Wide Association Analysis, Humans, Author Correction, Eye Disease and Disorders of Vision, Loeys-Dietz Syndrome, Genome, Human, Wellcome Trust Case Control Consortium 2, Blue Mountains Eye Study - GWAS group, General Chemistry, Mendelian Randomization Analysis, R1, eye diseases, Mendelian inheritance, Ehlers-Danlos Syndrome, lcsh:Q, sense organs, Genome-Wide Association Study
Abstract

Central corneal thickness (CCT) is a highly heritable trait associated with complex eye diseases such as keratoconus and glaucoma. We perform a genome-wide association meta-analysis of CCT and identify 19 novel regions. In addition to adding support for known connective tissue-related pathways, pathway analyses uncover previously unreported gene sets. Remarkably, >20% of the CCT-loci are near or within Mendelian disorder genes. These included FBN1, ADAMTS2 and TGFB2 which associate with connective tissue disorders (Marfan, Ehlers-Danlos and Loeys-Dietz syndromes), and the LUM-DCN-KERA gene complex involved in myopia, corneal dystrophies and cornea plana. Using index CCT-increasing variants, we find a significant inverse correlation in effect sizes between CCT and keratoconus (r = −0.62, P = 5.30 × 10−5) but not between CCT and primary open-angle glaucoma (r = −0.17, P = 0.2). Our findings provide evidence for shared genetic influences between CCT and keratoconus, and implicate candidate genes acting in collagen and extracellular matrix regulation., Reduced central corneal thickness (CCT) is observed in common eye diseases as well as in rare Mendelian disorders. Here, in a cross-ancestry GWAS, the authors identify 19 novel genetic loci associated with CCT, a subset of which is involved in rare corneal or connective tissue disorders.

Published
2019
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9. Autosomal dominant nanophthalmos (NNO1 (ital)) with high hyperopia and angle-closure glaucoma maps to chromosome 11

Author

Othman, M.I., Sullivan, S.A., Skuta, G.L., Cockrell, D.A., Stringham, H.M., Downs, C.A., Fornes, A., Mick, A., Boehnke, M., Vollrath, D., and Richards, J.E.

Subjects
Genetic disorders -- Research, Chromosome mapping -- Usage, Eye -- Abnormalities, Angle-closure glaucoma -- Genetic aspects, Biological sciences
Abstract

Mapping to chromosome 11 of autosomal dominant nanophthalmos (NNO1 (ital)) with high hyperopia and angle-closure glaucoma is discussed. This developmental ocular disorder, for which ocular examinations of 22 affected members of a large family were done, is uncommon and involves a small eye, in terms of axial length, high hyperopia, high incidence of angle-closure glaucoma and a high lens/eye volume ratio.

Published
1998

10. Multi-trait genome-wide association study identifies new loci associated with optic disc parameters

Author

Bonnemaijer, P.W.M. (Pieter), Leeuwen, E.M. (Elisabeth M. van), Iglesias, A.I. (Adriana I.), Gharahkhani, P. (Puya), Vitart, V. (Veronique), Khawaja, A.P. (Anthony), Simcoe, M. (Mark), Höhn, R. (René), Cree, A.J. (Angela), Igo Jr., R.P. (Robert), Burdon, K.P. (Kathryn P.), Craig, J.E. (Jamie), Hewit, A.W. (Alex), Jonas, J.B., Khor, C.-C. (Chiea-Cheun), Pasutto, F. (Francesca), Mackey, D.A. (David), Mitchell, P. (Paul), Mishra, A. (Aniket), Pang, C.P. (Chi Pui), Pasquale, L.R. (Louis R), Springelkamp, H. (Henriët), Thorleifsson, G. (Gudmar), Thorsteinsdottir, U. (Unnur), Viswanathan, A.C. (Ananth C.), Wojciechowski, R. (Robert), Wong, T.Y. (Tien Yin), Young, T.L. (Terrri L), Zeller, T. (Tanja), Allingham, R.R. (R Rand), Budenz, D.L. (Donald L.), Bailey, J.C. (Jessica Cooke), Fingert, J. (John), Gaasterland, D. (Douglas), Gaasterland, T. (Terry), Haines, J.L. (Jonathan), Hark, L. (Lisa), Hauser, M.A. (Michael), Kang, J.H. (Jae Hee), Kraft, P. (Peter), Lee, R.K. (Richard K.), Lichter, P.A. (Paul A.), Liu, Y. (Yutao), Moroi, S. (Syoko), Pasquale, L.R. (Louis), Pericak, M. (Margaret), Realini, A. (Anthony), Rhee, D. (Doug), Richards, J.R. (Julia R.), Ritch, R. (Robert), Scott, W.K. (William), Singh, K. (Kuldev), Sit, A.J. (Arthur J.), Vollrath, D. (Douglas), Weinreb, R.N. (Robert N.), Wollstein, G. (Gadi), Wilmer, D.Z. (Don Zack), Atan, D. (Denize), Aslam, T. (Tariq), Barman, S.A. (Sarah A.), Barrett, J.H. (Jennifer H.), Bishop, P.N. (Paul), Blows, P. (Peter), Bunce, C. (Catey), Carare, R.O. (Roxana O.), Chakravarthy, U. (Usha), Chan, M. (Michelle), Chua, S.Y.L. (Sharon Y. L.), Crabb, D.P. (David), Cumberland, P.M. (Philippa M.), Day, A. (Alexander), Desai, P. (Parul), Dhillon, B. (Bal), Dick, A.D. (Andrew D.), Egan, C. (Cathy), Ennis, S. (Sarah), Foster, P.J. (Paul), Fruttiger, M. (Marcus), Gallacher, J.E.J. (John E. J.), Garway, D.F. (David F.), Gibson, J. (Jane), Dan Gore, (), Guggenheim, J. (Jean), Hardcastle, A. (Alison), Harding, S.P. (Simon), Hogg, R. (Ruth), Keane, P.A. (Pearse A.), Khaw, P.T. (Peng T.), Lascaratos, G. (Gerassimos), Macgillivray, T. (Tom), Mackie, S. (Sarah), Martin, K. (Keith), McGaughey, M. (Michelle), McGuinness, B. (Bernadette), McKay, G.J. (Gareth), McKibbin, M. (Martin), Mitry, D. (Danny), Moore, T. (Tony), Morgan, J.E. (James E.), Muthy, Z.A. (Zaynah A.), O’Sullivan, E. (Eoin), Owen, C.G. (Chris G.), Patel, P. (Praveen), Paterson, E. (Euan), Peto, T. (Tünde), Petzold, A. (Axel), Rahi, J.S. (Jugnoo S.), Rudnikca, A.R. (Alicja R.), Self, J. (Jay), Sivaprasad, S., Steel, D. (David), Stratton, I. (Irene), Strouthidis, N. (Nicholas), Sudlow, C. (Cathie), Thomas, D. (Dhanes), Trucco, E. (Emanuele), Tufail, A. (Adnan), Vernon, S.A. (Stephen A.), Williams, C. (Cathy), Williams, K.M. (Katie M.), Woodside, J.V. (J.), Yates, M.M. (Max M.), Yip, J. (Jennifer), Zheng, Y. (Yalin), Gerhold-Ay, A. (Aslihan), Nickels, S. (Stefan), Wilson, J.F. (James), Hayward, C. (Caroline), Boutin, T.S. (Thibaud S.), Polasek, O. (Ozren), Aung, T. (Tin), Khor, C.C., Amin, N. (Najaf), Lotery, A.J. (Andrew), Wiggs, J.L. (Janey L.), Cheng, C.-Y. (Ching-Yu), Hysi, P.G. (Pirro G.), Hammond, C.J. (Christopher), Thiadens, A.A.H.J. (Alberta), MacGregor, S. (Stuart), Klaver, C.C.W. (Caroline), Duijn, C.M. (Cornelia) van, Bonnemaijer, P.W.M. (Pieter), Leeuwen, E.M. (Elisabeth M. van), Iglesias, A.I. (Adriana I.), Gharahkhani, P. (Puya), Vitart, V. (Veronique), Khawaja, A.P. (Anthony), Simcoe, M. (Mark), Höhn, R. (René), Cree, A.J. (Angela), Igo Jr., R.P. (Robert), Burdon, K.P. (Kathryn P.), Craig, J.E. (Jamie), Hewit, A.W. (Alex), Jonas, J.B., Khor, C.-C. (Chiea-Cheun), Pasutto, F. (Francesca), Mackey, D.A. (David), Mitchell, P. (Paul), Mishra, A. (Aniket), Pang, C.P. (Chi Pui), Pasquale, L.R. (Louis R), Springelkamp, H. (Henriët), Thorleifsson, G. (Gudmar), Thorsteinsdottir, U. (Unnur), Viswanathan, A.C. (Ananth C.), Wojciechowski, R. (Robert), Wong, T.Y. (Tien Yin), Young, T.L. (Terrri L), Zeller, T. (Tanja), Allingham, R.R. (R Rand), Budenz, D.L. (Donald L.), Bailey, J.C. (Jessica Cooke), Fingert, J. (John), Gaasterland, D. (Douglas), Gaasterland, T. (Terry), Haines, J.L. (Jonathan), Hark, L. (Lisa), Hauser, M.A. (Michael), Kang, J.H. (Jae Hee), Kraft, P. (Peter), Lee, R.K. (Richard K.), Lichter, P.A. (Paul A.), Liu, Y. (Yutao), Moroi, S. (Syoko), Pasquale, L.R. (Louis), Pericak, M. (Margaret), Realini, A. (Anthony), Rhee, D. (Doug), Richards, J.R. (Julia R.), Ritch, R. (Robert), Scott, W.K. (William), Singh, K. (Kuldev), Sit, A.J. (Arthur J.), Vollrath, D. (Douglas), Weinreb, R.N. (Robert N.), Wollstein, G. (Gadi), Wilmer, D.Z. (Don Zack), Atan, D. (Denize), Aslam, T. (Tariq), Barman, S.A. (Sarah A.), Barrett, J.H. (Jennifer H.), Bishop, P.N. (Paul), Blows, P. (Peter), Bunce, C. (Catey), Carare, R.O. (Roxana O.), Chakravarthy, U. (Usha), Chan, M. (Michelle), Chua, S.Y.L. (Sharon Y. L.), Crabb, D.P. (David), Cumberland, P.M. (Philippa M.), Day, A. (Alexander), Desai, P. (Parul), Dhillon, B. (Bal), Dick, A.D. (Andrew D.), Egan, C. (Cathy), Ennis, S. (Sarah), Foster, P.J. (Paul), Fruttiger, M. (Marcus), Gallacher, J.E.J. (John E. J.), Garway, D.F. (David F.), Gibson, J. (Jane), Dan Gore, (), Guggenheim, J. (Jean), Hardcastle, A. (Alison), Harding, S.P. (Simon), Hogg, R. (Ruth), Keane, P.A. (Pearse A.), Khaw, P.T. (Peng T.), Lascaratos, G. (Gerassimos), Macgillivray, T. (Tom), Mackie, S. (Sarah), Martin, K. (Keith), McGaughey, M. (Michelle), McGuinness, B. (Bernadette), McKay, G.J. (Gareth), McKibbin, M. (Martin), Mitry, D. (Danny), Moore, T. (Tony), Morgan, J.E. (James E.), Muthy, Z.A. (Zaynah A.), O’Sullivan, E. (Eoin), Owen, C.G. (Chris G.), Patel, P. (Praveen), Paterson, E. (Euan), Peto, T. (Tünde), Petzold, A. (Axel), Rahi, J.S. (Jugnoo S.), Rudnikca, A.R. (Alicja R.), Self, J. (Jay), Sivaprasad, S., Steel, D. (David), Stratton, I. (Irene), Strouthidis, N. (Nicholas), Sudlow, C. (Cathie), Thomas, D. (Dhanes), Trucco, E. (Emanuele), Tufail, A. (Adnan), Vernon, S.A. (Stephen A.), Williams, C. (Cathy), Williams, K.M. (Katie M.), Woodside, J.V. (J.), Yates, M.M. (Max M.), Yip, J. (Jennifer), Zheng, Y. (Yalin), Gerhold-Ay, A. (Aslihan), Nickels, S. (Stefan), Wilson, J.F. (James), Hayward, C. (Caroline), Boutin, T.S. (Thibaud S.), Polasek, O. (Ozren), Aung, T. (Tin), Khor, C.C., Amin, N. (Najaf), Lotery, A.J. (Andrew), Wiggs, J.L. (Janey L.), Cheng, C.-Y. (Ching-Yu), Hysi, P.G. (Pirro G.), Hammond, C.J. (Christopher), Thiadens, A.A.H.J. (Alberta), MacGregor, S. (Stuart), Klaver, C.C.W. (Caroline), and Duijn, C.M. (Cornelia) van

Abstract

A new avenue of mining published genome-wide association studies includes the joint analysis of related traits. The power of this approach depends on the genetic correlation of traits, which reflects the number of pleiotropic loci, i.e. genetic loci influencing multiple traits. Here, we applied new meta-analyses of optic nerve head (ONH) related traits implicated in primary open-angle glaucoma (POAG); intraocular pressure and central corneal thickness using Haplotype reference consortium imputations. We performed a multi-trait analysis of ONH parameters cup area, disc area and vertical cup-disc ratio. We uncover new variants; rs11158547 in PPP1R36-PLEKHG3 and rs1028727 near SERPINE3 at genome-wide significance that replicate in independent Asian cohorts imputed to 1000 Genomes. At this point, validation of these variants in POAG cohorts is hampered by the high degree of heterogeneity. Our results show that multi-trait analysis is a valid approach to identify novel pleiotropic variants for ONH.

Published
2019
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11. Multi-trait genome-wide association study identifies new loci associated with optic disc parameters

Author

Bonnemaijer, PWM, van Leeuwen, EM, Iglesias, AI, Gharahkhani, P, Vitart, V, Khawaja, AP, Simcoe, M, Hoehn, R, Cree, AJ, Igo, RP, Burdon, KP, Craig, JE, Hewitt, AW, Jonas, J, Khor, C-C, Pasutto, F, Mackey, DA, Mitchell, P, Mishra, A, Pang, C, Pasquale, LR, Springelkamp, H, Thorleifsson, G, Thorsteinsdottir, U, Viswanathan, AC, Wojciechowski, R, Wong, T, Young, TL, Zeller, T, Atan, D, Aslam, T, Barman, SA, Barrett, JH, Bishop, P, Blows, P, Bunce, C, Carare, RO, Chakravarthy, U, Chan, M, Chua, SYL, Crabb, DP, Cumberland, PM, Day, A, Desai, P, Dhillon, B, Dick, AD, Egan, C, Ennis, S, Foster, P, Fruttiger, M, Gallacher, JEJ, Garway, DF, Gibson, J, Gore, D, Guggenheim, JA, Hardcastle, A, Harding, SP, Hogg, RE, Keane, PA, Khaw, PT, Lascaratos, G, Macgillivray, T, Mackie, S, Martin, K, McGaughey, M, McGuinness, B, Mckay, GJ, McKibbin, M, Mitry, D, Moore, T, Morgan, JE, Muthy, ZA, O'Sullivan, E, Owen, CG, Patel, P, Paterson, E, Peto, T, Petzold, A, Rahi, JS, Rudnikca, AR, Self, J, Sivaprasad, S, Steel, D, Stratton, I, Strouthidis, N, Sudlow, C, Thomas, D, Trucco, E, Tufail, A, Vernon, SA, Williams, C, Williams, K, Woodside, JV, Yates, MM, Yip, J, Zheng, Y, Allingham, R, Budenz, D, Bailey, JC, Fingert, J, Gaasterland, D, Gaasterland, T, Haines, JL, Hark, L, Hauser, M, Kang, JH, Kraft, P, Lee, R, Lichter, P, Liu, Y, Moroi, S, Pericak, M, Realini, A, Rhee, D, Richards, JR, Ritch, R, Scott, WK, Singh, K, Sit, A, Vollrath, D, Weinreb, R, Wollstein, G, Wilmer, DZ, Gerhold-Ay, A, Nickels, S, Wilson, JF, Hayward, C, Boutin, TS, Polasek, O, Aung, T, Khor, CC, Amin, N, Lotery, AJ, Wiggs, JL, Cheng, C-Y, Hysi, PG, Hammond, CJ, Thiadens, AAHJ, MacGregor, S, Klaver, CCW, van Duijn, CM, Bonnemaijer, PWM, van Leeuwen, EM, Iglesias, AI, Gharahkhani, P, Vitart, V, Khawaja, AP, Simcoe, M, Hoehn, R, Cree, AJ, Igo, RP, Burdon, KP, Craig, JE, Hewitt, AW, Jonas, J, Khor, C-C, Pasutto, F, Mackey, DA, Mitchell, P, Mishra, A, Pang, C, Pasquale, LR, Springelkamp, H, Thorleifsson, G, Thorsteinsdottir, U, Viswanathan, AC, Wojciechowski, R, Wong, T, Young, TL, Zeller, T, Atan, D, Aslam, T, Barman, SA, Barrett, JH, Bishop, P, Blows, P, Bunce, C, Carare, RO, Chakravarthy, U, Chan, M, Chua, SYL, Crabb, DP, Cumberland, PM, Day, A, Desai, P, Dhillon, B, Dick, AD, Egan, C, Ennis, S, Foster, P, Fruttiger, M, Gallacher, JEJ, Garway, DF, Gibson, J, Gore, D, Guggenheim, JA, Hardcastle, A, Harding, SP, Hogg, RE, Keane, PA, Khaw, PT, Lascaratos, G, Macgillivray, T, Mackie, S, Martin, K, McGaughey, M, McGuinness, B, Mckay, GJ, McKibbin, M, Mitry, D, Moore, T, Morgan, JE, Muthy, ZA, O'Sullivan, E, Owen, CG, Patel, P, Paterson, E, Peto, T, Petzold, A, Rahi, JS, Rudnikca, AR, Self, J, Sivaprasad, S, Steel, D, Stratton, I, Strouthidis, N, Sudlow, C, Thomas, D, Trucco, E, Tufail, A, Vernon, SA, Williams, C, Williams, K, Woodside, JV, Yates, MM, Yip, J, Zheng, Y, Allingham, R, Budenz, D, Bailey, JC, Fingert, J, Gaasterland, D, Gaasterland, T, Haines, JL, Hark, L, Hauser, M, Kang, JH, Kraft, P, Lee, R, Lichter, P, Liu, Y, Moroi, S, Pericak, M, Realini, A, Rhee, D, Richards, JR, Ritch, R, Scott, WK, Singh, K, Sit, A, Vollrath, D, Weinreb, R, Wollstein, G, Wilmer, DZ, Gerhold-Ay, A, Nickels, S, Wilson, JF, Hayward, C, Boutin, TS, Polasek, O, Aung, T, Khor, CC, Amin, N, Lotery, AJ, Wiggs, JL, Cheng, C-Y, Hysi, PG, Hammond, CJ, Thiadens, AAHJ, MacGregor, S, Klaver, CCW, and van Duijn, CM

Abstract

A new avenue of mining published genome-wide association studies includes the joint analysis of related traits. The power of this approach depends on the genetic correlation of traits, which reflects the number of pleiotropic loci, i.e. genetic loci influencing multiple traits. Here, we applied new meta-analyses of optic nerve head (ONH) related traits implicated in primary open-angle glaucoma (POAG); intraocular pressure and central corneal thickness using Haplotype reference consortium imputations. We performed a multi-trait analysis of ONH parameters cup area, disc area and vertical cup-disc ratio. We uncover new variants; rs11158547 in PPP1R36-PLEKHG3 and rs1028727 near SERPINE3 at genome-wide significance that replicate in independent Asian cohorts imputed to 1000 Genomes. At this point, validation of these variants in POAG cohorts is hampered by the high degree of heterogeneity. Our results show that multi-trait analysis is a valid approach to identify novel pleiotropic variants for ONH.

Published
2019

12. Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases (vol 9, 1864, 2018)

Author

Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Souzeau, E, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Wang, JJ, Rochtchina, E, Attia, J, Scott, R, Holliday, EG, Baird, PN, Xie, J, Inouye, M, Viswanathan, A, Sim, X, Allingham, RR, Brilliant, MH, Budenz, DL, Christen, WG, Fingert, J, Friedman, DS, Gaasterland, D, Gaasterland, T, Hauser, MA, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, Loomis, SJ, Moroi, SE, Pericak-Vance, MA, Realini, A, Richards, JE, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Weinreb, RN, Wollstein, G, Zack, DJ, Zhang, K, Donnelly, P, Barroso, I, Blackwell, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Su, Z, Vukcevic, D, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P, Iglesias, AI, Mishra, A, Vitart, V, Bykhovskaya, Y, Hoehn, R, Springelkamp, H, Cuellar-Partida, G, Gharahkhani, P, Bailey, JNC, Willoughby, CE, Li, X, Yazar, S, Nag, A, Khawaja, AP, Polasek, O, Siscovick, D, Mitchell, P, Tham, YC, Haines, JL, Kearns, LS, Hayward, C, Shi, Y, van Leeuwen, EM, Taylor, KD, Bonnemaijer, P, Rotter, JI, Martin, NG, Zeller, T, Mills, RA, Souzeau, E, Staffieri, SE, Jonas, JB, Schmidtmann, I, Boutin, T, Kang, JH, Lucas, SEM, Wong, TY, Beutel, ME, Wilson, JF, Uitterlinden, AG, Vithana, EN, Foster, PJ, Hysi, PG, Hewitt, AW, Khor, CC, Pasquale, LR, Montgomery, GW, Klaver, CCW, Aung, T, Pfeiffer, N, Mackey, DA, Hammond, CJ, Cheng, C-Y, Craig, JE, Rabinowitz, YS, Wiggs, JL, Burdon, KP, van Duijn, CM, MacGregor, S, Wang, JJ, Rochtchina, E, Attia, J, Scott, R, Holliday, EG, Baird, PN, Xie, J, Inouye, M, Viswanathan, A, Sim, X, Allingham, RR, Brilliant, MH, Budenz, DL, Christen, WG, Fingert, J, Friedman, DS, Gaasterland, D, Gaasterland, T, Hauser, MA, Kraft, P, Lee, RK, Lichter, PR, Liu, Y, Loomis, SJ, Moroi, SE, Pericak-Vance, MA, Realini, A, Richards, JE, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Vollrath, D, Weinreb, RN, Wollstein, G, Zack, DJ, Zhang, K, Donnelly, P, Barroso, I, Blackwell, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Su, Z, Vukcevic, D, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, and Whittaker, P

Abstract

Emmanuelle Souzeau, who contributed to analysis of data, was inadvertently omitted from the author list in the originally published version of this Article. This has now been corrected in both the PDF and HTML versions of the Article.

Published
2019

13. Genomic locus modulating corneal thickness in the mouse identifies POU6F2 as a potential risk of developing glaucoma

Author

King, R. (Richard), Struebing, F.L., Li, Y. (Yuwen), Wang, J., Koch, A.A., Bailey, JNC, Gharahkhani, P, Macgregor, S., Allingham, R.R. (R Rand), Hauser, M.A. (Michael), Wiggs, J.L. (Janey), Geisert, E.E., Allingham, R., Brilliant, M., Budenz, D., Bailey, J.C., Fingert, J., Gaasterland, D., Gaasterland, T., Haines, J.L. (Jonathan), Hark, L., Hauser, M., Igo, R., Kang, J.H. (Jae), Kraft, P. (Peter), Lee, R. (R.) van der, Lichter, P. (Peter), Liu, Y. (Yu), Moroi, S., Pasquale, L.R. (Louis), Pericak-Vance, M.A. (Margaret), Realini, A., Rhee, D., Richards, J. (John), Ritch, R., Schuman, J., Scott, W.K. (William), Singh, K, Sit, A., Vollrath, D., Weinreb, RN, Wollstein, G., Zack, D., Aung, T. (Tin), Burdon, K.P. (Kathryn), Cheng, C-Y. (Ching-Yu), Bailey, J.N.C., Craig, J.E. (Jamie), Cree, A.J. (Angela), Hammond, C.J. (Christopher), Hewit, A.W. (Alex), Höhn, R., Hysi, P.G. (Pirro), Gonzalez, A.I., Jonas, J., Khawaja, A, Khor, C.C., Klaver, C.C.W. (Caroline), Pasutto, F. (Francesca), Mackey, D., Mitchell, P. (Paul), Mishra, A. (Aniket), Pang, C., Springelkamp, H. (Henriët), Thorleifsson, G. (Gudmar), Thorsteinsdottir, U. (Unnur), Duijn, C.M., Viswanathan, A. (Anand), Vitart, V. (Veronique), Wojciechowski, R. (Robert), Wong, T., Young, T.L. (Terri), Zeller, T. (Tanja), King, R. (Richard), Struebing, F.L., Li, Y. (Yuwen), Wang, J., Koch, A.A., Bailey, JNC, Gharahkhani, P, Macgregor, S., Allingham, R.R. (R Rand), Hauser, M.A. (Michael), Wiggs, J.L. (Janey), Geisert, E.E., Allingham, R., Brilliant, M., Budenz, D., Bailey, J.C., Fingert, J., Gaasterland, D., Gaasterland, T., Haines, J.L. (Jonathan), Hark, L., Hauser, M., Igo, R., Kang, J.H. (Jae), Kraft, P. (Peter), Lee, R. (R.) van der, Lichter, P. (Peter), Liu, Y. (Yu), Moroi, S., Pasquale, L.R. (Louis), Pericak-Vance, M.A. (Margaret), Realini, A., Rhee, D., Richards, J. (John), Ritch, R., Schuman, J., Scott, W.K. (William), Singh, K, Sit, A., Vollrath, D., Weinreb, RN, Wollstein, G., Zack, D., Aung, T. (Tin), Burdon, K.P. (Kathryn), Cheng, C-Y. (Ching-Yu), Bailey, J.N.C., Craig, J.E. (Jamie), Cree, A.J. (Angela), Hammond, C.J. (Christopher), Hewit, A.W. (Alex), Höhn, R., Hysi, P.G. (Pirro), Gonzalez, A.I., Jonas, J., Khawaja, A, Khor, C.C., Klaver, C.C.W. (Caroline), Pasutto, F. (Francesca), Mackey, D., Mitchell, P. (Paul), Mishra, A. (Aniket), Pang, C., Springelkamp, H. (Henriët), Thorleifsson, G. (Gudmar), Thorsteinsdottir, U. (Unnur), Duijn, C.M., Viswanathan, A. (Anand), Vitart, V. (Veronique), Wojciechowski, R. (Robert), Wong, T., Young, T.L. (Terri), and Zeller, T. (Tanja)

Abstract

Central corneal thickness (CCT) is one of the most heritable ocular traits and it is also a phenotypic risk factor for primary open angle glaucoma (POAG). The present study uses the BXD Recombinant Inbred (RI) strains to identify novel quantitative trait loci (QTLs) modulating CCT in the mouse with the potential of identifying a molecular link between CCT and risk of developing POAG. The BXD RI strain set was used to define mammalian genomic loci modulating CCT, with a total of 818 corneas measured from 61 BXD RI strains (between 60–100 days of age). The mice were anesthetized and the eyes were positioned in front of the lens of the Phoenix Micron IV Image-Guided OCT system or the Bioptigen OCT system. CCT data for each strain was averaged and used to QTLs modulating this phenotype using the bioinformatics tools on GeneNetwork (www.genenetwork.org). The candidate genes and genomic loci identified in the mouse were then directly compared with the summary data from a human POAG genome wide association study (NEIGHBORHOOD) to determine if any genomic elements modulating mouse CCT are also risk factors for POAG.This analysis revealed one significant QTL on Chr 13 and a suggestive QTL on Chr 7. The significant locus on Chr 13 (13 to 19 Mb) was examined further to define candidate genes modulating this eye phenotype. For the Chr 13 QTL in the mouse, only one gene in the region (Pou6f2) contained nonsynonymous SNPs. Of these five nonsynonymous SNPs in Pou6f2, two resulted in changes in the amino acid proline which could result in altered secondary structure affecting protein function. The 7 Mb region under the mouse Chr 13 peak distributes over 2 chromosomes in the human: Chr 1 and Chr 7. These genomic loci were examined in the NEIGHBORHOOD database to determine if they are potential risk factors for human glaucoma identified using meta-data from human GWAS. The top 50 hits all resided within one gene (POU6F2), with the highest significance level of p = 10−6 for SNP rs7631

Published
2018
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14. Cross-ancestry genome-wide association analysis of corneal thickness strengthens link between complex and Mendelian eye diseases

Author

Iglesias, A.I. (Adriana I.), Mishra, A. (Aniket), Vitart, V. (Veronique), Bykhovskaya, Y. (Yelena), Höhn, R. (René), Springelkamp, H. (Henriët), Cuellar-Partida, G. (Gabriel), Gharahkhani, P. (Puya), Bailey, J.N.C. (Jessica N. Cooke), Willoughby, C.E. (Colin E.), Li, X. (Xiaohui), Yazar, S. (Seyhan), Nag, A. (Abhishek), Khawaja, A.P. (Anthony), Polasek, O. (Ozren), Siscovick, D.S. (David), Mitchell, P. (Paul), Tham, Y.C. (Yih Chung), Haines, J.L. (Jonathan), Kearns, L.S. (Lisa S.), Hayward, C. (Caroline), Shi, Y. (Yuan), Van Leeuwen, E.M. (Elisabeth M.), Taylor, K.D. (Kent), Wang, J.J. (Jie Jin), Rochtchina, E. (Elena), Attia, J. (John), Scott, R. (Rodney), Holliday, E.G. (Elizabeth), Baird, P.N. (Paul), Xie, J. (Jing), Inouye, M. (Michael), Viswanathan, A. (Ananth), Sim, X. (Xueling), Bonnemaijer, P.W.M. (Pieter), Rotter, J.I. (Jerome I.), Martin, N.G. (Nicholas G.), Zeller, T. (Tanja), Mills, R.A. (Richard), Staffieri, S.E. (Sandra E.), Jonas, J.B. (Jost B.), Schmidtmann, I. (Irene), Boutin, T. (Thibaud), Kang, J.H. (Jae H.), Lucas, S.E.M. (Sionne E.M.), Wong, T.Y. (Tien Yin), Beutel, M.E. (Manfred E.), Wilson, J.F. (James F.), Allingham, R.R. (R Rand), Brilliant, M.H. (Murray H.), Budenz, D.L. (Donald L.), Christen, W.G. (William G.), Fingert, J. (John), Friedman, D.S. (David), Gaasterland, D. (Douglas), Gaasterland, T. (Terry), Hauser, M.A. (Michael), Kraft, P. (Peter), Lee, R.K. (Richard K.), Lichter, P.A. (Paul A.), Liu, Y. (Yutao), Loomis, S.J. (Stephanie J.), Moroi, S.E. (Sayoko), Pericak-Vance, M.A. (Margaret), Realini, A. (Anthony), Richards, J.E. (Julia E.), Schuman, J.S. (Joel S.), Scott, W.K. (William), Singh, K. (Kuldev), Sit, A.J. (Arthur J.), Vollrath, D. (Douglas), Weinreb, R.N. (Robert N.), Wollstein, G. (Gadi), Zack, D.J. (Donald), Zhang, K. (Kang), Donnelly, P. (Peter), Barroso, I.E. (Inês), Blackwell, J.M. (Jenefer M.), Bramon, E. (Elvira), Brown, M.A. (Matthew), Casas, J.P. (Juan), Corvin, A. (Aiden), Deloukas, P. (Panos), Duncanson, A. (Audrey), Jankowski, J. (Janusz), Markus, H.S. (Hugh), Mathew, J. (Joseph), Palmer, C.N.A. (Colin), Plomin, R. (Robert), Rautanen, A. (Anna), Sawcer, S.J. (Stephen), Trembath, R.C. (Richard), Wood, N.W. (Nicholas W.), Spencer, C.C.A. (Chris C.), Band, G. (Gavin), Bellenguez, C. (Céline), Freeman, C. (Colin), Hellenthal, F.A., Giannoulatou, E. (Eleni), Pirinen, M. (Matti), Pearson, R. (Ruth), Strange, A. (Amy), Su, Z. (Zhan), Vukcevic, D. (Damjan), Langford, C. (Cordelia), Hunt, S.E. (Sarah E.), Edkins, T. (Ted), Gwilliam, R. (Rhian), Blackburn, H. (Hannah), Bumpstead, S. (Suzannah), Dronov, S. (Serge), Gillman, M. (Matthew), Gray, E. (Emma), Hammond, N. (Naomi), Jayakumar, A. (Alagurevathi), McCann, O.T. (Owen), Liddle, J. (Jennifer), Potter, S.C. (Simon), Ravindrarajah, R. (Radhi), Ricketts, M. (Michelle), Waller, P. (Patrick), Weston, P. (Paul), Widaa, S. (Sara), Whittaker, P. (Pamela), Uitterlinden, A.G. (André), Vithana, E.N. (Eranga), Foster, P.J. (Paul), Hysi, P.G. (Pirro), Hewitt, A.W. (Alex W.), Khor, C.C., Pasquale, L.R. (Louis), Montgomery, G.W. (Grant W.), Klaver, C.C.W. (Caroline), Aung, T. (Tin), Pfeiffer, A.F.H. (Andreas), Mackey, D.A. (David), Hammond, C.J. (Christopher), Cheng, C.-Y. (Ching-Yu), Craig, J.E. (Jamie), Rabinowitz, Y.S. (Yaron), Wiggs, J.L. (Janey L.), Burdon, K.P. (Kathryn), Duijn, C.M. (Cornelia) van, MacGregor, S. (Stuart), Iglesias, A.I. (Adriana I.), Mishra, A. (Aniket), Vitart, V. (Veronique), Bykhovskaya, Y. (Yelena), Höhn, R. (René), Springelkamp, H. (Henriët), Cuellar-Partida, G. (Gabriel), Gharahkhani, P. (Puya), Bailey, J.N.C. (Jessica N. Cooke), Willoughby, C.E. (Colin E.), Li, X. (Xiaohui), Yazar, S. (Seyhan), Nag, A. (Abhishek), Khawaja, A.P. (Anthony), Polasek, O. (Ozren), Siscovick, D.S. (David), Mitchell, P. (Paul), Tham, Y.C. (Yih Chung), Haines, J.L. (Jonathan), Kearns, L.S. (Lisa S.), Hayward, C. (Caroline), Shi, Y. (Yuan), Van Leeuwen, E.M. (Elisabeth M.), Taylor, K.D. (Kent), Wang, J.J. (Jie Jin), Rochtchina, E. (Elena), Attia, J. (John), Scott, R. (Rodney), Holliday, E.G. (Elizabeth), Baird, P.N. (Paul), Xie, J. (Jing), Inouye, M. (Michael), Viswanathan, A. (Ananth), Sim, X. (Xueling), Bonnemaijer, P.W.M. (Pieter), Rotter, J.I. (Jerome I.), Martin, N.G. (Nicholas G.), Zeller, T. (Tanja), Mills, R.A. (Richard), Staffieri, S.E. (Sandra E.), Jonas, J.B. (Jost B.), Schmidtmann, I. (Irene), Boutin, T. (Thibaud), Kang, J.H. (Jae H.), Lucas, S.E.M. (Sionne E.M.), Wong, T.Y. (Tien Yin), Beutel, M.E. (Manfred E.), Wilson, J.F. (James F.), Allingham, R.R. (R Rand), Brilliant, M.H. (Murray H.), Budenz, D.L. (Donald L.), Christen, W.G. (William G.), Fingert, J. (John), Friedman, D.S. (David), Gaasterland, D. (Douglas), Gaasterland, T. (Terry), Hauser, M.A. (Michael), Kraft, P. (Peter), Lee, R.K. (Richard K.), Lichter, P.A. (Paul A.), Liu, Y. (Yutao), Loomis, S.J. (Stephanie J.), Moroi, S.E. (Sayoko), Pericak-Vance, M.A. (Margaret), Realini, A. (Anthony), Richards, J.E. (Julia E.), Schuman, J.S. (Joel S.), Scott, W.K. (William), Singh, K. (Kuldev), Sit, A.J. (Arthur J.), Vollrath, D. (Douglas), Weinreb, R.N. (Robert N.), Wollstein, G. (Gadi), Zack, D.J. (Donald), Zhang, K. (Kang), Donnelly, P. (Peter), Barroso, I.E. (Inês), Blackwell, J.M. (Jenefer M.), Bramon, E. (Elvira), Brown, M.A. (Matthew), Casas, J.P. (Juan), Corvin, A. (Aiden), Deloukas, P. (Panos), Duncanson, A. (Audrey), Jankowski, J. (Janusz), Markus, H.S. (Hugh), Mathew, J. (Joseph), Palmer, C.N.A. (Colin), Plomin, R. (Robert), Rautanen, A. (Anna), Sawcer, S.J. (Stephen), Trembath, R.C. (Richard), Wood, N.W. (Nicholas W.), Spencer, C.C.A. (Chris C.), Band, G. (Gavin), Bellenguez, C. (Céline), Freeman, C. (Colin), Hellenthal, F.A., Giannoulatou, E. (Eleni), Pirinen, M. (Matti), Pearson, R. (Ruth), Strange, A. (Amy), Su, Z. (Zhan), Vukcevic, D. (Damjan), Langford, C. (Cordelia), Hunt, S.E. (Sarah E.), Edkins, T. (Ted), Gwilliam, R. (Rhian), Blackburn, H. (Hannah), Bumpstead, S. (Suzannah), Dronov, S. (Serge), Gillman, M. (Matthew), Gray, E. (Emma), Hammond, N. (Naomi), Jayakumar, A. (Alagurevathi), McCann, O.T. (Owen), Liddle, J. (Jennifer), Potter, S.C. (Simon), Ravindrarajah, R. (Radhi), Ricketts, M. (Michelle), Waller, P. (Patrick), Weston, P. (Paul), Widaa, S. (Sara), Whittaker, P. (Pamela), Uitterlinden, A.G. (André), Vithana, E.N. (Eranga), Foster, P.J. (Paul), Hysi, P.G. (Pirro), Hewitt, A.W. (Alex W.), Khor, C.C., Pasquale, L.R. (Louis), Montgomery, G.W. (Grant W.), Klaver, C.C.W. (Caroline), Aung, T. (Tin), Pfeiffer, A.F.H. (Andreas), Mackey, D.A. (David), Hammond, C.J. (Christopher), Cheng, C.-Y. (Ching-Yu), Craig, J.E. (Jamie), Rabinowitz, Y.S. (Yaron), Wiggs, J.L. (Janey L.), Burdon, K.P. (Kathryn), Duijn, C.M. (Cornelia) van, and MacGregor, S. (Stuart)

Abstract

Central corneal thickness (CCT) is a highly heritable trait associated with complex eye diseases such as keratoconus and glaucoma. We perform a genome-wide association meta-analysis of CCT and identify 19 novel regions. In addition to adding support for known connective tissue-related pathways, pathway analyses uncover previously unreported gene sets. Remarkably, >20% of the CCT-loci are near or within Mendelian disorder genes. These included FBN1, ADAMTS2 and TGFB2 which associate with connective tissue disorders (Marfan, Ehlers-Danlos and Loeys-Dietz syndromes), and the LUM-DCN-KERA gene complex involved in myopia, corneal dystrophies and cornea plana. Using index CCT-increasing variants, we find a significant inverse correlation in effect sizes between CCT and keratoconus (r =-0.62, P = 5.30 × 10-5) but not between CCT and primary open-angle glaucoma (r =-0.17, P = 0.2). Our findings provide evidence for shared genetic influences between CCT and keratoconus, and implicate candidate genes acting in collagen and extracellular matrix regulation.

Published
2018
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15. Testosterone Pathway Genetic Polymorphisms in Relation to Primary Open-Angle Glaucoma: analysis in Two Large Datasets

Author

Bailey, JNC, Gharahkhani, P, Kang, JH, Butkiewicz, M, Sullivan, DA, Weinreb, RN, Aschard, H, Allingham, RR, Ashley-Koch, A, Lee, RK, Moroi, SE, Brilliant, MH, Wollstein, G, Schuman, JS, Fingert, JH, Budenz, DL, Realini, T, Gaasterland, T, Scott, WK, Singh, K, Sit, AJ, Igo, RP, Song, YE, Hark, L, Ritch, R, Rhee, DJ, Vollrath, D, Zack, DJ, Medeiros, F, Vajaranant, TS, Chasman, DI, Christen, WG, Pericak-Vance, MA, Liu, Y, Kraft, P, Richards, JE, Rosner, BA, Hauser, MA, Craig, JE, Burdon, KP, Hewitt, AW, Mackey, DA, Haines, JL, MacGregor, S, Wiggs, JL, Pasquale, LR, Bailey, JNC, Gharahkhani, P, Kang, JH, Butkiewicz, M, Sullivan, DA, Weinreb, RN, Aschard, H, Allingham, RR, Ashley-Koch, A, Lee, RK, Moroi, SE, Brilliant, MH, Wollstein, G, Schuman, JS, Fingert, JH, Budenz, DL, Realini, T, Gaasterland, T, Scott, WK, Singh, K, Sit, AJ, Igo, RP, Song, YE, Hark, L, Ritch, R, Rhee, DJ, Vollrath, D, Zack, DJ, Medeiros, F, Vajaranant, TS, Chasman, DI, Christen, WG, Pericak-Vance, MA, Liu, Y, Kraft, P, Richards, JE, Rosner, BA, Hauser, MA, Craig, JE, Burdon, KP, Hewitt, AW, Mackey, DA, Haines, JL, MacGregor, S, Wiggs, JL, and Pasquale, LR

Abstract

PURPOSE: Sex hormones may be associated with primary open-angle glaucoma (POAG), although the mechanisms are unclear. We previously observed that gene variants involved with estrogen metabolism were collectively associated with POAG in women but not men; here we assessed gene variants related to testosterone metabolism collectively and POAG risk. METHODS: We used two datasets: one from the United States (3853 cases and 33,480 controls) and another from Australia (1155 cases and 1992 controls). Both datasets contained densely called genotypes imputed to the 1000 Genomes reference panel. We used pathway- and gene-based approaches with Pathway Analysis by Randomization Incorporating Structure (PARIS) software to assess the overall association between a panel of single nucleotide polymorphisms (SNPs) in testosterone metabolism genes and POAG. In sex-stratified analyses, we evaluated POAG overall and POAG subtypes defined by maximum IOP (high-tension [HTG] or normal tension glaucoma [NTG]). RESULTS: In the US dataset, the SNP panel was not associated with POAG (permuted P = 0.77), although there was an association in the Australian sample (permuted P = 0.018). In both datasets, the SNP panel was associated with POAG in men (permuted P ≤ 0.033) and not women (permuted P ≥ 0.42), but in gene-based analyses, there was no consistency on the main genes responsible for these findings. In both datasets, the testosterone pathway association with HTG was significant (permuted P ≤ 0.011), but again, gene-based analyses showed no consistent driver gene associations. CONCLUSIONS: Collectively, testosterone metabolism pathway SNPs were consistently associated with the high-tension subtype of POAG in two datasets.

Published
2018

16. Genetic correlations between intraocular pressure, blood pressure and primary open-angle glaucoma: a multi-cohort analysis

Author

Aschard, H., Kang, J.H., Iglesias, A.I., Hysi, P., Bailey, J.N., Khawaja, A.P., Allingham, R.R., Ashley-Koch, A., Lee, R.K., Moroi, S.E., Brilliant, M.H., Wollstein, G., Schuman, J.S., Fingert, J.H., Budenz, D.L., Realini, T., Gaasterland, T., Scott, W.K., Singh, K., Sit, A.J., Igo, R.P., Jr., Song, Y.E., Hark, L., Ritch, R., Rhee, D.J., Gulati, V., Haven, S., Vollrath, D., Zack, D.J., Medeiros, F., Weinreb, R.N., Cheng, C.Y., Chasman, D.I., Christen, W.G., Pericak-Vance, M.A., Liu, Y., Kraft, P., Richards, J.E., Rosner, B.A., Hauser, M.A., Klaver, C.C.W., vanDuijn, C.M., Haines, J., Wiggs, J.L., Pasquale, L.R., Aschard, H., Kang, J.H., Iglesias, A.I., Hysi, P., Bailey, J.N., Khawaja, A.P., Allingham, R.R., Ashley-Koch, A., Lee, R.K., Moroi, S.E., Brilliant, M.H., Wollstein, G., Schuman, J.S., Fingert, J.H., Budenz, D.L., Realini, T., Gaasterland, T., Scott, W.K., Singh, K., Sit, A.J., Igo, R.P., Jr., Song, Y.E., Hark, L., Ritch, R., Rhee, D.J., Gulati, V., Haven, S., Vollrath, D., Zack, D.J., Medeiros, F., Weinreb, R.N., Cheng, C.Y., Chasman, D.I., Christen, W.G., Pericak-Vance, M.A., Liu, Y., Kraft, P., Richards, J.E., Rosner, B.A., Hauser, M.A., Klaver, C.C.W., vanDuijn, C.M., Haines, J., Wiggs, J.L., and Pasquale, L.R.

Abstract

Item does not contain fulltext, Primary open-angle glaucoma (POAG) is the most common chronic optic neuropathy worldwide. Epidemiological studies show a robust positive relation between intraocular pressure (IOP) and POAG and modest positive association between IOP and blood pressure (BP), while the relation between BP and POAG is controversial. The International Glaucoma Genetics Consortium (n=27 558), the International Consortium on Blood Pressure (n=69 395), and the National Eye Institute Glaucoma Human Genetics Collaboration Heritable Overall Operational Database (n=37 333), represent genome-wide data sets for IOP, BP traits and POAG, respectively. We formed genome-wide significant variant panels for IOP and diastolic BP and found a strong relation with POAG (odds ratio and 95% confidence interval: 1.18 (1.14-1.21), P=1.8 x 10(-27)) for the former trait but no association for the latter (P=0.93). Next, we used linkage disequilibrium (LD) score regression, to provide genome-wide estimates of correlation between traits without the need for additional phenotyping. We also compared our genome-wide estimate of heritability between IOP and BP to an estimate based solely on direct measures of these traits in the Erasmus Rucphen Family (ERF; n=2519) study using Sequential Oligogenic Linkage Analysis Routines (SOLAR). LD score regression revealed high genetic correlation between IOP and POAG (48.5%, P=2.1 x 10(-5)); however, genetic correlation between IOP and diastolic BP (P=0.86) and between diastolic BP and POAG (P=0.42) were negligible. Using SOLAR in the ERF study, we confirmed the minimal heritability between IOP and diastolic BP (P=0.63). Overall, IOP shares genetic basis with POAG, whereas BP has limited shared genetic correlation with IOP or POAG.

Published
2017

17. Systems genetics identifies a role for Cacna2d1 regulation in elevated intraocular pressure and glaucoma susceptibility

Author

Chintalapudi, S.R. (Sumana R.), Maria, D. (Doaa), Di Wang, X. (Xiang), Bailey, J.N.C. (Jessica N. Cooke), Allingham, R. (Rand), Brilliant, M.H. (Murray H.), Budenz, D.L. (Donald L.), Fingert, J. (John), Gaasterland, D. (Douglas), Gaasterland, T. (Terry), Haines, J.L. (Jonathan), Hark, L. (Lisa), Hauser, M.A. (Michael), Igo Jr., R.P. (Robert), Hee Kang, J. (Jae), Kraft, P. (Peter), Lee, R.K. (Richard K.), Lichter, P.A. (Paul A.), Liu, Y. (Yutao), Moroi, S. (Syoko), Pasquale, L.R. (Louis), Pericak-Vance, M.A. (Margaret), Realini, A. (Anthony), Rhee, D. (Doug), Richards, J.R. (Julia R.), Ritch, R. (Robert), Schuman, J.S. (Joel S.), Scott, W.K. (William), Singh, K. (Kuldev), Sit, A.J. (Arthur J.), Vollrath, D. (Douglas), Wollstein, G. (Gadi), Zack, D.J. (Donald), Aung, T. (Tin), Bonnemaijer, P. (Peter), Cheng, C.-Y. (Cheng-Yu), Craig, J.E. (Jamie), Duijn, C.M. (Cornelia) van, Gharahkhani, P. (Puya), Iglesias Gonzalez, A. (Adriana), Hammond, C.J. (Christopher J.), Hewitt, A. (Alex), Hoehn, R. (Rene), Jonansson, F. (Fridbert), Khawaja, A.P. (Anthony), Chuen Khor, C. (Chiea), Klaver, C.C.W. (Caroline), Lotery, A.J. (Andrew), Mackey, D.A. (David), MacGregor, S. (Stuart), Pang, C. (Calvin), Pasutto, F. (Francesca), Zwart, J-A. (John-Anker), Thorleifsson, G. (Gudmar), Thorsteinsdottir, U. (Unnar), Vitart, V. (Veronique), Vithana, E.N. (Eranga), Young, T.L. (Terri L.), Zeller, T. (Tanja), Hysi, P.G. (Pirro), Wiggs, J.L. (Janey L.), Williams, R.W. (Robert W.), Jablonski, M.M. (Monica M.), Chintalapudi, S.R. (Sumana R.), Maria, D. (Doaa), Di Wang, X. (Xiang), Bailey, J.N.C. (Jessica N. Cooke), Allingham, R. (Rand), Brilliant, M.H. (Murray H.), Budenz, D.L. (Donald L.), Fingert, J. (John), Gaasterland, D. (Douglas), Gaasterland, T. (Terry), Haines, J.L. (Jonathan), Hark, L. (Lisa), Hauser, M.A. (Michael), Igo Jr., R.P. (Robert), Hee Kang, J. (Jae), Kraft, P. (Peter), Lee, R.K. (Richard K.), Lichter, P.A. (Paul A.), Liu, Y. (Yutao), Moroi, S. (Syoko), Pasquale, L.R. (Louis), Pericak-Vance, M.A. (Margaret), Realini, A. (Anthony), Rhee, D. (Doug), Richards, J.R. (Julia R.), Ritch, R. (Robert), Schuman, J.S. (Joel S.), Scott, W.K. (William), Singh, K. (Kuldev), Sit, A.J. (Arthur J.), Vollrath, D. (Douglas), Wollstein, G. (Gadi), Zack, D.J. (Donald), Aung, T. (Tin), Bonnemaijer, P. (Peter), Cheng, C.-Y. (Cheng-Yu), Craig, J.E. (Jamie), Duijn, C.M. (Cornelia) van, Gharahkhani, P. (Puya), Iglesias Gonzalez, A. (Adriana), Hammond, C.J. (Christopher J.), Hewitt, A. (Alex), Hoehn, R. (Rene), Jonansson, F. (Fridbert), Khawaja, A.P. (Anthony), Chuen Khor, C. (Chiea), Klaver, C.C.W. (Caroline), Lotery, A.J. (Andrew), Mackey, D.A. (David), MacGregor, S. (Stuart), Pang, C. (Calvin), Pasutto, F. (Francesca), Zwart, J-A. (John-Anker), Thorleifsson, G. (Gudmar), Thorsteinsdottir, U. (Unnar), Vitart, V. (Veronique), Vithana, E.N. (Eranga), Young, T.L. (Terri L.), Zeller, T. (Tanja), Hysi, P.G. (Pirro), Wiggs, J.L. (Janey L.), Williams, R.W. (Robert W.), and Jablonski, M.M. (Monica M.)

Abstract

Glaucoma is a multi-factorial blinding disease in which genetic factors play an important role. Elevated intraocular pressure is a highly heritable risk factor for primary open angle glaucoma and currently the only target for glaucoma therapy. Our study helps to better understand underlying genetic and molecular mechanisms that regulate intraocular pressure, and identifies a new candidate gene, Cacna2d1, that modulates intraocular pressure and a promising therapeutic, pregabalin, which binds to CACNA2D1 protein and lowers intraocular pressure significantly. Because our study utilizes a genetically diverse population of mice with know

Published
2017
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18. Genome-wide association analysis identifies TXNRD2, ATXN2 and FOXC1 as susceptibility loci for primary open-angle glaucoma

Author

Bailey, JNC, Loomis, SJ, Kang, JH, Allingham, RR, Gharahkhani, P, Khor, CC, Burdon, KP, Aschard, H, Chasman, DI, Igo, RP, Hysi, PG, Glastonbury, CA, Ashley-Koch, A, Brilliant, M, Brown, AA, Budenz, DL, Buil, A, Cheng, CY, Choi, H, Christen, WG, Curhan, G, De Vivo, I, Fingert, JH, Foster, PJ, Fuchs, C, Gaasterland, D, Gaasterland, T, Hewitt, AW, Hu, F, Hunter, DJ, Khawaja, AP, Lee, RK, Li, Z, Lichter, PR, Mackey, DA, McGuffin, P, Mitchell, P, Moroi, SE, Perera, SA, Pepper, KW, Qi, Q, Realini, T, Richards, JE, Ridker, PM, Rimm, E, Ritch, R, Ritchie, M, Schuman, JS, Scott, WK, Singh, K, Sit, AJ, Song, YE, Tamimi, RM, Topouzis, F, Viswanathan, AC, Verma, SS, Vollrath, D, Wang, JJ, Weisschuh, N, Wissinger, B, Wollstein, G, Wong, TY, Yaspan, BL, Zack, DJ, Zhang, K, Weinreb, RN, Pericak-Vance, MA, Small, K, Hammond, CJ, Aung, T, Liu, Y, Vithana, EN, MacGregor, S, Craig, JE, Kraft, P, Howell, G, Hauser, MA, and Pasquale, LR

Subjects
ANZRAG Consortium
Abstract

© 2016 Nature America, Inc. Primary open-angle glaucoma (POAG) is a leading cause of blindness worldwide. To identify new susceptibility loci, we performed meta-analysis on genome-wide association study (GWAS) results from eight independent studies from the United States (3,853 cases and 33,480 controls) and investigated the most significantly associated SNPs in two Australian studies (1,252 cases and 2,592 controls), three European studies (875 cases and 4,107 controls) and a Singaporean Chinese study (1,037 cases and 2,543 controls). A meta-analysis of the top SNPs identified three new associated loci: rs35934224[T] in TXNRD2 (odds ratio (OR) = 0.78, P = 4.05 × 10 -11) encoding a mitochondrial protein required for redox homeostasis; rs7137828[T] in ATXN2 (OR = 1.17, P = 8.73 × 10 -10); and rs2745572[A] upstream of FOXC1 (OR = 1.17, P = 1.76 × 10 -10). Using RT-PCR and immunohistochemistry, we show TXNRD2 and ATXN2 expression in retinal ganglion cells and the optic nerve head. These results identify new pathways underlying POAG susceptibility and suggest new targets for preventative therapies.

Published
2016
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20. Diabetische Retinopathie

Author

Klaus Bachmann, Bartke T, Vollrath D, J. Strobel, and M. Blum

Subjects
medicine.medical_specialty, business.industry, Vasodilation, Retinal, Diabetic retinopathy, medicine.disease, Contractility, Ophthalmology, chemistry.chemical_compound, medicine.anatomical_structure, Endocrinology, chemistry, Internal medicine, medicine, Breathing, medicine.symptom, business, Vasoconstriction, Blood vessel, Retinopathy
Abstract

OBJECTIVES The retinal vessel analyzer (RVA) offers the unique opportunity of noninvasive online measurements of retinal vessel diameters. Breathing 100% oxygen is used to test vessel contractility of retinal arterioles in different stages of diabetic retinopathy (DR). METHODS After a 3-min baseline measurement 40 patients with diabetes were exposed to 100% oxygen breathing for a 5-min period. The diameter of a retinal arteriole was measured with the RVA continuously during this time. Subjects were divided into four groups according to different stages of DR. Group I: no RD; group II: mild/moderate RD; group III: moderate/severe nonproliferative RD with laser treatment; group IV: proliferative RD with laser treatment. RESULTS Group I (n=12) demonstrated a vasoconstriction of 6.2% (+/-4.0). In group II (n=8) 6.1% (+/-2.8) and in group III (n=8) 6.6% (+/-4.1) vasoconstriction was found. Group IV (n=12) presented a vasodilatation of +2.5% (+/-4,7). CONCLUSION No significant differences could be found in the vasoreaction to 100% oxygen breathing in different stages of nonproliferative RD. However, a significant reduction could be demonstrated in proliferative DR with this method.

Published
2003
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21. DNA Copy Number Variants of Known Glaucoma Genes in Relation to Primary Open-Angle Glaucoma

Author

Loomis, S. J., Yaspan, B. L., Richards, J. E., Liu, Y., Pasquale, L. R., Budenz, D. L., Kang, J. H., Realini, A., Pericak-Vance, M. A., Gaasterland, D., Zhang, K., Christen, W. G., Lichter, P., Singh, K., Schuman, J. S., Ashley-Koch, A. E., Sit, A. J., Lee, R. K., Vollrath, D., Wollstein, G., Garrett, M. E., Brilliant, M., Fingert, J. H., Haines, J. L., Weinreb, R., Zack, D. J., Gaasterland, T., Allingham, R. R., Wiggs, J. L., Bailey, J. C., Moroi, S. E., and Scott, W. K.

Subjects
endocrine system diseases, genetic structures, mental disorders, sense organs, eye diseases
Abstract

We examined the role of DNA copy number variants (CNVs) of known glaucoma genes in relation to primary open angle glaucoma (POAG).

Published
2014
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22. DNA Copy Number Variants of Known Glaucoma Genes in Relation to Primary Open-Angle Glaucoma

Author

Liu, Y., primary, Garrett, M. E., additional, Yaspan, B. L., additional, Bailey, J. C., additional, Loomis, S. J., additional, Brilliant, M., additional, Budenz, D. L., additional, Christen, W. G., additional, Fingert, J. H., additional, Gaasterland, D., additional, Gaasterland, T., additional, Kang, J. H., additional, Lee, R. K., additional, Lichter, P., additional, Moroi, S. E., additional, Realini, A., additional, Richards, J. E., additional, Schuman, J. S., additional, Scott, W. K., additional, Singh, K., additional, Sit, A. J., additional, Vollrath, D., additional, Weinreb, R., additional, Wollstein, G., additional, Zack, D. J., additional, Zhang, K., additional, Pericak-Vance, M. A., additional, Haines, J. L., additional, Pasquale, L. R., additional, Wiggs, J. L., additional, Allingham, R. R., additional, Ashley-Koch, A. E., additional, and Hauser, M. A., additional

Published
2014
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23. Common variants at 9p21 and 8q22 are associated with increased susceptibility to optic nerve degeneration in glaucoma

Author

Wiggs, JL, Yaspan, BL, Hauser, MA, Kang, JH, Allingham, RR, Olson, LM, Abdrabou, W, Fan, BJ, Wang, DY, Brodeur, W, Budenz, DL, Caprioli, J, Crenshaw, A, Crooks, K, DelBono, E, Doheny, KF, Friedman, DS, Gaasterland, D, Gaasterland, T, Laurie, C, Lee, RK, Lichter, PR, Loomis, S, Liu, Y, Medeiros, FA, McCarty, C, Mirel, D, Moroi, SE, Musch, DC, Realini, A, Rozsa, FW, Schuman, JS, Scott, K, Singh, K, Stein, JD, Trager, EH, VanVeldhuisen, P, Vollrath, D, Wollstein, G, Yoneyama, S, Zhang, K, Weinreb, RN, Ernst, J, Kellis, M, Masuda, T, Zack, D, Richards, JE, Pericak-Vance, M, Pasquale, LR, Haines, JL, Wiggs, JL, Yaspan, BL, Hauser, MA, Kang, JH, Allingham, RR, Olson, LM, Abdrabou, W, Fan, BJ, Wang, DY, Brodeur, W, Budenz, DL, Caprioli, J, Crenshaw, A, Crooks, K, DelBono, E, Doheny, KF, Friedman, DS, Gaasterland, D, Gaasterland, T, Laurie, C, Lee, RK, Lichter, PR, Loomis, S, Liu, Y, Medeiros, FA, McCarty, C, Mirel, D, Moroi, SE, Musch, DC, Realini, A, Rozsa, FW, Schuman, JS, Scott, K, Singh, K, Stein, JD, Trager, EH, VanVeldhuisen, P, Vollrath, D, Wollstein, G, Yoneyama, S, Zhang, K, Weinreb, RN, Ernst, J, Kellis, M, Masuda, T, Zack, D, Richards, JE, Pericak-Vance, M, Pasquale, LR, and Haines, JL

Abstract

Optic nerve degeneration caused by glaucoma is a leading cause of blindness worldwide. Patients affected by the normal-pressure form of glaucoma are more likely to harbor risk alleles for glaucoma-related optic nerve disease. We have performed a meta-analysis of two independent genome-wide association studies for primary open angle glaucoma (POAG) followed by a normal-pressure glaucoma (NPG, defined by intraocular pressure (IOP) less than 22 mmHg) subgroup analysis. The single-nucleotide polymorphisms that showed the most significant associations were tested for association with a second form of glaucoma, exfoliation-syndrome glaucoma. The overall meta-analysis of the GLAUGEN and NEIGHBOR dataset results (3,146 cases and 3,487 controls) identified significant associations between two loci and POAG: the CDKN2BAS region on 9p21 (rs2157719 [G], OR = 0.69 [95%CI 0.63-0.75], p = 1.86×10-18), and the SIX1/SIX6 region on chromosome 14q23 (rs10483727 [A], OR = 1.32 [95%CI 1.21-1.43], p = 3.87×10-11). In sub-group analysis two loci were significantly associated with NPG: 9p21 containing the CDKN2BAS gene (rs2157719 [G], OR = 0.58 [95% CI 0.50-0.67], p = 1.17×10-12) and a probable regulatory region on 8q22 (rs284489 [G], OR = 0.62 [95% CI 0.53-0.72], p = 8.88×10-10). Both NPG loci were also nominally associated with a second type of glaucoma, exfoliation syndrome glaucoma (rs2157719 [G], OR = 0.59 [95% CI 0.41-0.87], p = 0.004 and rs284489 [G], OR = 0.76 [95% CI 0.54-1.06], p = 0.021), suggesting that these loci might contribute more generally to optic nerve degeneration in glaucoma. Because both loci influence transforming growth factor beta (TGF-beta) signaling, we performed a genomic pathway analysis that showed an association between the TGF-beta pathway and NPG (permuted p = 0.009). These results suggest that neuro-protective therapies targeting TGF-beta signaling could be effective for multiple forms of glaucoma. © 2012 Wiggs et al.

Published
2012

27. AUTOSOMAL DOMINANT NANOPHTHALMOS MAPS TO CHROMOSOME 11

Author

Skuta, G. L., primary, Othman, M. I., additional, Sullivan, S. A., additional, Cockrell, D. A., additional, Stringham, H. M., additional, Downs, C. A., additional, Formes, A. P., additional, Mick, A., additional, Boehnke, M., additional, Vollrath, D., additional, and Richards, J. E., additional

Published
1999
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30. Tandem array of human visual pigment genes...

Author

Vollrath, D. and Nathans, J.

Subjects
*COLOR blindness
Abstract

Results of testing for unequal crossing-over within a head-to-tail tandem array of the homologous red and green visual pigment genes to explain the observed variation in green-pigment gene number among individuals and the prevalence of red-green fusion genes among color-blind subjects; Model and evidence to support model and help explain the high incidence of color blindness in the human population.

Published
1988
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31. A sequence-ready BAC clone contig of a 2.2-Mb segment of human chromosome 1q24.

Author

Vollrath, D and Jaramillo-Babb, V L

Abstract

Human chromosomal region 1q24 encodes two cloned disease genes and lies within large genetic inclusion intervals for several disease genes that have yet to be identified. We have constructed a single bacterial artificial chromosome (BAC) clone contig that spans over 2 Mb of 1q24 and consists of 78 clones connected by 100 STSs. The average density of mapped STSs is one of the highest described for a multimegabase region of the human genome. The contig was efficiently constructed by generating STSs from clone ends, followed by library walking. Distance information was added by determining the insert sizes of all clones, and expressed sequence tags (ESTs) and genes were incorporated to create a partial transcript map of the region, providing candidate genes for local disease loci. The gene order and content of the region provide insight into ancient duplication events that have occurred on proximal 1q. The stage is now set for further elucidation of this interesting region through large-scale sequencing.

Published
1999

32. An electrophoretic karyotype of Neurospora crassa

Author

Orbach, M J, Vollrath, D, Davis, R W, and Yanofsky, C

Abstract

A molecular karyotype of Neurospora crassa was obtained by using an alternating-field gel electrophoresis system which employs contour-clamped homogeneous electric fields. The migration of all seven N. crassa chromosomal DNAs was defined, and five of the seven molecules were separated from one another. The estimated sizes of these molecules, based on their migration relative to Schizosaccharomyces pombe chromosomal DNA molecules, are 4 to 12.6 megabases. The seven linkage groups were correlated with specific chromosomal DNA bands by hybridizing transfers of contour-clamped homogeneous electric field gels with radioactive probes specific to each linkage group. The mobilities of minichromosomal DNAs generated from translocation strains were also examined. The methods used for preparation of chromosomal DNA molecules and the conditions for their separation should be applicable to other filamentous fungi.

Published
1988
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33. Physical mapping of large DNA by chromosome fragmentation.

Author

Vollrath, D, Davis, R W, Connelly, C, and Hieter, P

Abstract

A technique is described for physically positioning any cloned DNA on a native or artificial Saccharomyces cerevisiae chromosome. The technique involves splitting a chromosome at a specific site by transformation with short linear molecules containing the cloned DNA at one end and telomeric sequences at the other. Recombination between the end of the linear molecules and homologous chromosomal sequences gives rise to chromosome fragments comprising all sequences distal or proximal to the mapping site depending on the orientation of the cloned DNA. The recombinant products are recovered by screening for stabilization of a suppressor tRNA on the linear molecules using a colony color assay. The cloned DNA is positioned relative to the chromosome ends by sizing the chromosomal fragments using alternating contour-clamped homogeneous electric field gel electrophoresis. Application of this technique to organisms other than S. cerevisiae and to the analysis of exogenous DNA cloned in yeast is discussed.

Published
1988
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34. Detection of numerous Y chromosome biallelic polymorphisms by denaturing high-performance liquid chromatography.

Author

Underhill, P A, Jin, L, Lin, A A, Mehdi, S Q, Jenkins, T, Vollrath, D, Davis, R W, Cavalli-Sforza, L L, and Oefner, P J

Abstract

Y chromosome haplotypes are particularly useful in deciphering human evolutionary history because they accentuate the effects of drift, migration, and range expansion. Significant acceleration of Y biallelic marker discovery and subsequent typing involving heteroduplex detection has been achieved by implementing an innovative and cost-efficient method called denaturing high-performance liquid chromatography (DHPLC). The power of the method resides in its sensitivity and ability to rapidly compare amplified sequences in an automated manner. We have determined the allelic states of 22 Y polymorphisms; 19 of which are unreported, in 718 diverse extant chromosomes; established haplotype frequencies; and deduced a phylogeny. All major geographic regions, including Eurasia, are characterized by mutations reflecting episodes of genetic drift and expansion. Most biallelic markers are localized regionally. However, some show wider dispersal and designate older, core haplotypes. One transversion defines a major haplogroup that distinguishes a previously unknown deep, apparently non-African branch. It provides evidence of an ancient bottleneck event. It is now possible to anticipate the inevitable detailed reconstruction of human Y chromosome genealogy based on several tens to even hundreds of these important polymorphisms.

Published
1997

35. Physical mapping of the Myxococcus xanthus genome by random cloning in yeast artificial chromosomes.

Author

Kuspa, A, Vollrath, D, Cheng, Y, and Kaiser, D

Abstract

Random segments of Myxococcus xanthus DNA were cloned in yeast artificial chromosomes (YACs) to construct a physical map of the genome. EcoRI restriction maps of 409 YAC clones with inserts averaging 111 kilobase pairs (kb) were determined. Comparison to the map of a 300-kb region of M. xanthus obtained from clones in Escherichia coli indicates that segments of DNA cloned in YACs are stably maintained in yeast and that their sequences accurately reflect the structure of the Myxococcus genome. The 409 YAC inserts were ordered within 60 map segments (contigs) by aligning their EcoRI restriction maps and by hybridization with 18 gene-specific DNA probes. These 60 map segments may represent the entire Myxococcus genome and could be used to organize its genetic information. This study illustrates the utility of YACs for cloning large segments of DNA and for reliable long-range genomic mapping.

Published
1989
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38. Multipoint linkage map of the human pseudoautosomal region, based on single-sperm typing: Do double crossovers occur during male meiosis?

Author

Schmitt, K., Lazzeroni, L. C., Foote, S., Vollrath, D., Elizabeth Fisher, Goradia, T. M., Lange, K., Page, D. C., and Arnheim, N.

Subjects
Research Article
Abstract

Sperm typing was used to measure recombination fractions among pseudoautosomal markers and the beginning of the X/Y-specific sequences located at the pseudoautosomal boundary. These experiments included primer-extension preamplification and PCR followed by allele typing using gel electrophoresis. A newly developed data-analysis program allowed the construction of the first multipoint-linkage sperm-typing map, using results obtained on seven loci from three individuals. The large sample size not only confirmed the increased recombination activity of the pseudoautosomal region but allowed an estimate of interference of recombination to be made. The coefficient of coincidence was calculated to be .26 over a physical distance of only approximately 1,800 kb. The observation of a few sperm presumably resulting from double recombination argues that more than one crossover event can occur in this region during male meiosis.

39. Estrogen pathway polymorphisms in relation to primary open angle glaucoma: An analysis accounting for gender from the United States

Author

Pasquale, L. R., Loomis, S. J., Weinreb, R. N., Kang, J. H., Yaspan, B. L., Cooke Bailey, J., Gaasterland, D., Gaasterland, T., Lee, R. K., Scott, W. K., Lichter, P. R., Budenz, D. L., Liu, Y., Realini, T., Friedman, D. S., Catherine McCarty, Moroi, S. E., Olson, L., Schuman, J. S., Singh, K., Vollrath, D., Wollstein, G., Zack, D. J., Brilliant, M., Sit, A. J., Christen, W. G., Fingert, J., Kraft, P., Zhang, K., Allingham, R. R., Pericak-Vance, M. A., Richards, J. E., Hauser, M. A., Haines, J. L., and Wiggs, J. L.

Subjects
Male, Aging, genetic structures, Neurodegenerative, Ophthalmology & Optometry, Polymorphism, Single Nucleotide, Opthalmology and Optometry, Genetics, Humans, Genetic Predisposition to Disease, Polymorphism, Eye Disease and Disorders of Vision, Intraocular Pressure, Sex Characteristics, Neurosciences, Glaucoma, Estrogens, Single Nucleotide, Estrogen, eye diseases, United States, Open-Angle, Case-Control Studies, Female, sense organs, Glaucoma, Open-Angle, Metabolic Networks and Pathways, Research Article, Signal Transduction
Abstract

Purpose: Circulating estrogen levels are relevant in glaucoma phenotypic traits. We assessed the association between an estrogen metabolism single nucleotide polymorphism (SNP) panel in relation to primary open angle glaucoma (POAG), accounting for gender. Methods: We included 3,108 POAG cases and 3,430 controls of both genders from the Glaucoma Genes and Environment (GLAUGEN) study and the National Eye Institute Glaucoma Human Genetics Collaboration (NEIGHBOR) consortium genotyped on the Illumina 660W-Quad platform. We assessed the relation between the SNP panels representative of estrogen metabolism and POAG using pathway-and gene-based approaches with the Pathway Analysis by Randomization Incorporating Structure (PARIS) software. PARIS executes a permutation algorithm to assess statistical significance relative to the pathways and genes of comparable genetic architecture. These analyses were performed using the metaanalyzed results from the GLAUGEN and NEIGHBOR data sets. We evaluated POAG overall as well as two subtypes of POAG defined as intraocular pressure (IOP) ≥22mmHg (high-pressure glaucoma [HPG]) or IOP 0.99). Among women, gene-based analyses revealed that the catechol-O-methyltransferase gene showed strong associations with HTG (permuted gene p≤0.001) and NPG (permuted gene p=0.01). Conclusions: The estrogen SNP pathway was associated with POAG among women. © 2013 Molecular Vision.

40. Alternative oxidase blunts pseudohypoxia and photoreceptor degeneration due to RPE mitochondrial dysfunction.

Author

Chen M, Wang Y, Dalal R, Du J, and Vollrath D

Subjects
Animals, Mice, Mitochondrial Proteins metabolism, Mitochondrial Proteins genetics, Ciona intestinalis metabolism, Ubiquinone metabolism, Ubiquinone analogs & derivatives, Retinal Degeneration metabolism, Retinal Degeneration pathology, Retinal Degeneration genetics, Photoreceptor Cells, Vertebrate metabolism, Photoreceptor Cells, Vertebrate pathology, Mitochondria metabolism, Oxidoreductases metabolism, Oxidoreductases genetics, Retinal Pigment Epithelium metabolism, Retinal Pigment Epithelium pathology, Plant Proteins metabolism, Plant Proteins genetics
Abstract

Loss of mitochondrial electron transport complex (ETC) function in the retinal pigment epithelium (RPE) in vivo results in RPE dedifferentiation and progressive photoreceptor degeneration, and has been implicated in the pathogenesis of age-related macular degeneration. Xenogenic expression of alternative oxidases in mammalian cells and tissues mitigates phenotypes arising from some mitochondrial electron transport defects, but can exacerbate others. We expressed an alternative oxidase from Ciona intestinalis (AOX) in ETC-deficient murine RPE in vivo to assess the retinal consequences of stimulating coenzyme Q oxidation and respiration without ATP generation. RPE-restricted expression of AOX in this context is surprisingly beneficial. This focused intervention mitigates RPE mTORC1 activation, dedifferentiation, hypertrophy, stress marker expression, pseudohypoxia, and aerobic glycolysis. These RPE cell autonomous changes are accompanied by increased glucose delivery to photoreceptors with attendant improvements in photoreceptor structure and function. RPE-restricted AOX expression normalizes accumulated levels of succinate and 2-hydroxyglutarate in ETC-deficient RPE, and counteracts deficiencies in numerous neural retinal metabolites. These features can be attributed to the activation of mitochondrial inner membrane flavoproteins such as succinate dehydrogenase and proline dehydrogenase, and alleviation of inhibition of 2-oxyglutarate-dependent dioxygenases such as prolyl hydroxylases and epigenetic modifiers. Our work underscores the importance to outer retinal health of coenzyme Q oxidation in the RPE and identifies a metabolic network critical for photoreceptor survival in the context of RPE mitochondrial dysfunction., Competing Interests: Competing interests statement:The authors declare no competing interest.

Published
2024
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41. In the Eyes of the Beholder-New Mertk Knockout Mouse and Re-Evaluation of Phagocytosis versus Anti-Inflammatory Functions of MERTK.

Author

Ghosh S, Finnemann SC, Vollrath D, and Rothlin CV

Subjects
Animals, Mice, Retinal Degeneration genetics, Retinal Degeneration metabolism, Retinal Degeneration pathology, Disease Models, Animal, Receptor Protein-Tyrosine Kinases metabolism, Receptor Protein-Tyrosine Kinases genetics, Humans, Inflammation genetics, Inflammation metabolism, c-Mer Tyrosine Kinase metabolism, c-Mer Tyrosine Kinase genetics, Phagocytosis, Mice, Knockout
Abstract

Greg Lemke's laboratory was one of the pioneers of research into the TAM family of receptor tyrosine kinases (RTKs). Not only was Tyro3 cloned in his laboratory, but his group also extensively studied mice knocked out for individual or various combinations of the TAM RTKs Tyro3 , Axl , and Mertk . Here we primarily focus on one of the paralogs-MERTK. We provide a historical perspective on rodent models of loss of Mertk function and their association with retinal degeneration and blindness. We describe later studies employing mouse genetics and the generation of newer knockout models that point out incongruencies with the inference that loss of MERTK-dependent phagocytosis is sufficient for severe, early-onset photoreceptor degeneration in mice. This discussion is meant to raise awareness with regards to the limitations of the original Mertk knockout mouse model generated using 129 derived embryonic stem cells and carrying 129 derived alleles and the role of these alleles in modifying Mertk knockout phenotypes or even displaying Mertk -independent phenotypes. We also suggest molecular approaches that can further Greg Lemke's scintillating legacy of dissecting the molecular functions of MERTK-a protein that has been described to function in phagocytosis as well as in the negative regulation of inflammation.

Published
2024
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42. Therapeutic blood-brain barrier modulation and stroke treatment by a bioengineered FZD 4 -selective WNT surrogate in mice.

Author

Ding J, Lee SJ, Vlahos L, Yuki K, Rada CC, van Unen V, Vuppalapaty M, Chen H, Sura A, McCormick AK, Tomaske M, Alwahabi S, Nguyen H, Nowatzke W, Kim L, Kelly L, Vollrath D, Califano A, Yeh WC, Li Y, and Kuo CJ

Subjects
Mice, Animals, Retina metabolism, Blood-Retinal Barrier metabolism, Wnt Signaling Pathway, Blood-Brain Barrier metabolism, Frizzled Receptors genetics, Frizzled Receptors metabolism
Abstract

Derangements of the blood-brain barrier (BBB) or blood-retinal barrier (BRB) occur in disorders ranging from stroke, cancer, diabetic retinopathy, and Alzheimer's disease. The Norrin/FZD 4 /TSPAN12 pathway activates WNT/β-catenin signaling, which is essential for BBB and BRB function. However, systemic pharmacologic FZD 4 stimulation is hindered by obligate palmitoylation and insolubility of native WNTs and suboptimal properties of the FZD 4 -selective ligand Norrin. Here, we develop L6-F4-2, a non-lipidated, FZD 4 -specific surrogate which significantly improves subpicomolar affinity versus native Norrin. In Norrin knockout (Ndp KO ) mice, L6-F4-2 not only potently reverses neonatal retinal angiogenesis deficits, but also restores BRB and BBB function. In adult C57Bl/6J mice, post-stroke systemic delivery of L6-F4-2 strongly reduces BBB permeability, infarction, and edema, while improving neurologic score and capillary pericyte coverage. Our findings reveal systemic efficacy of a bioengineered FZD 4 -selective WNT surrogate during ischemic BBB dysfunction, with potential applicability to adult CNS disorders characterized by an aberrant blood-brain barrier., (© 2023. The Author(s).)

Published
2023
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43. Cilia-associated wound repair mediated by IFT88 in retinal pigment epithelium.

Author

Ning K, Bhuckory MB, Lo CH, Sendayen BE, Kowal TJ, Chen M, Bansal R, Chang KC, Vollrath D, Berbari NF, Mahajan VB, Hu Y, and Sun Y

Subjects
Mice, Humans, Animals, Retinal Pigment Epithelium, Cilia physiology, Disease Models, Animal, Tumor Suppressor Proteins, Microtubule-Associated Proteins, Retinal Degeneration, Ciliopathies
Abstract

Primary cilia are conserved organelles that integrate extracellular cues into intracellular signals and are critical for diverse processes, including cellular development and repair responses. Deficits in ciliary function cause multisystemic human diseases known as ciliopathies. In the eye, atrophy of the retinal pigment epithelium (RPE) is a common feature of many ciliopathies. However, the roles of RPE cilia in vivo remain poorly understood. In this study, we first found that mouse RPE cells only transiently form primary cilia. We then examined the RPE in the mouse model of Bardet-Biedl Syndrome 4 (BBS4), a ciliopathy associated with retinal degeneration in humans, and found that ciliation in BBS4 mutant RPE cells is disrupted early during development. Next, using a laser-induced injury model in vivo, we found that primary cilia in RPE reassemble in response to laser injury during RPE wound healing and then rapidly disassemble after the repair is completed. Finally, we demonstrated that RPE-specific depletion of primary cilia in a conditional mouse model of cilia loss promoted wound healing and enhanced cell proliferation. In summary, our data suggest that RPE cilia contribute to both retinal development and repair and provide insights into potential therapeutic targets for more common RPE degenerative diseases., (© 2023. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)

Published
2023
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44. An efficient inducible RPE-Selective cre transgenic mouse line.

Author

Chen M, Kim L, Lu CW, Zeng H, and Vollrath D

Subjects
Animals, Disease Models, Animal, Electroretinography, Integrases biosynthesis, Macular Degeneration metabolism, Macular Degeneration pathology, Mice, Mice, Inbred C57BL, Mice, Transgenic, RNA genetics, RNA metabolism, Retinal Pigment Epithelium pathology, Tomography, Optical Coherence, Gene Expression Regulation, Integrases genetics, Macular Degeneration genetics, Retinal Pigment Epithelium metabolism
Abstract

Cre-mediated modulation of gene function in the murine retinal pigment epithelium (RPE) has been widely used, but current postnatal RPE-selective Cre driver lines suffer from limited recombination efficiency and/or ectopic or mosaic expression. We sought to generate a transgenic mouse line with consistently efficient RPE-selective Cre activity that could be temporally regulated. We used ϕC31 integrase to insert a DNA construct encoding a human BEST1 promoter fragment driving a Cre recombinase estrogen receptor fusion (BEST1-CreERT2) at the Rosa26 locus of C57BL/6J mice. Rosa26 BEST1-CreERT2 mice were bred with a tdTomato reporter line and to mice with a Cre-conditional allele of Tfam. 4-hydroxytamoxifen or vehicle was delivered by four consecutive daily intraperitoneal injections. TdTomato was robustly expressed in the RPE of mice of both sexes for inductions beginning at P14 (males 90.7 ± 4.5%, females 84.7 ± 3.2%) and at 7 weeks (males 84.3 ± 7.0%, females 82 ± 3.6%). <0.6% of Muller glia also expressed tdTomato, but no tdTomato fluorescence was observed in other ocular cells or in multiple non-ocular tissues, with the exception of sparse foci in the testis. No evidence of retinal toxicity was observed in mice homozygous for the transgene induced beginning at P14 and assessed at 7-10 months. RPE-selective ablation of Tfam beginning at P14 led to reduced retinal thickness at 8 months of age and diminished retinal electrical responses at 12 months, as expected. These findings demonstrate that we have generated a mouse line with consistently efficient, tamoxifen-mediated postnatal induction of Cre recombination in the RPE and a small fraction of Muller glia. This line should be useful for temporally regulated modulation of gene function in the murine RPE., (Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Published
2021
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45. AMP-independent activator of AMPK for treatment of mitochondrial disorders.

Author

Moore T, Yanes RE, Calton MA, Vollrath D, Enns GM, and Cowan TM

Subjects
Allosteric Regulation drug effects, Animals, Biphenyl Compounds, Cell Respiration drug effects, Cell Survival, Cells, Cultured, Disease Models, Animal, Enzyme Activation drug effects, Fibroblasts cytology, Fibroblasts drug effects, Fibroblasts metabolism, Humans, Mice, Mitochondrial Diseases genetics, Mitochondrial Diseases metabolism, Oxidative Stress drug effects, Oxygen Consumption drug effects, Pyrimidines administration & dosage, Pyrimidines pharmacology, Pyrones administration & dosage, Pyrones pharmacology, Thiazoles pharmacology, Thiophenes administration & dosage, Thiophenes pharmacology, meta-Aminobenzoates pharmacology, AMP-Activated Protein Kinases genetics, AMP-Activated Protein Kinases metabolism, Mitochondrial Diseases drug therapy, Thiazoles administration & dosage, meta-Aminobenzoates administration & dosage
Abstract

Mitochondrial diseases are a clinically heterogenous group of disorders caused by respiratory chain dysfunction and associated with progressive, multi-systemic phenotype. There is no effective treatment or cure, and no FDA-approved drug for treating mitochondrial disease. To identify and characterize potential therapeutic compounds, we developed an in vitro screening assay and identified a group of direct AMP-activated protein kinase (AMPK) activators originally developed for the treatment of diabetes and metabolic syndrome. Unlike previously investigated AMPK agonists such as AICAR, these compounds allosterically activate AMPK in an AMP-independent manner, thereby increasing specificity and decreasing pleiotropic effects. The direct AMPK activator PT1 significantly improved mitochondrial function in assays of cellular respiration, energy status, and cellular redox. PT1 also protected against retinal degeneration in a mouse model of photoreceptor degeneration associated with mitochondrial dysfunction and oxidative stress, further supporting the therapeutic potential of AMP-independent AMPK agonists in the treatment of mitochondrial disease., Competing Interests: Part of this work was supported by a grant awarded from Raptor Pharmaceuticals. They had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Raptor Pharmaceuticals is also not associated in anyway to the editorial board or committee of PLOS ONE nor have they acted as expert witness in any relevant legal proceedings. Our financial support from Raptor Pharmaceuticals does not alter our adherence to PLOS ONE policies on sharing data and materials.

Published
2020
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46. Depletion of Mitochondrial DNA in Differentiated Retinal Pigment Epithelial Cells.

Author

Hu X, Calton MA, Tang S, and Vollrath D

Subjects
Adenylate Kinase metabolism, Cell Differentiation drug effects, Cell Line, Didanosine pharmacology, Epithelial Cells drug effects, Glycolysis drug effects, Humans, Mechanistic Target of Rapamycin Complex 1 metabolism, Membrane Potential, Mitochondrial drug effects, Mitochondria drug effects, Mitochondria metabolism, Oxidative Stress drug effects, Cell Differentiation genetics, DNA, Mitochondrial metabolism, Epithelial Cells metabolism, Retinal Pigment Epithelium cytology
Abstract

We investigated the effects of treating differentiated retinal pigment epithelial (RPE) cells with didanosine (ddI), which is associated with retinopathy in individuals with HIV/AIDS. We hypothesized that such treatment would cause depletion of mitochondrial DNA and provide insight into the consequences of degradation of RPE mitochondrial function in aging and disease. Treatment of differentiated ARPE-19 or human primary RPE cells with 200 µM ddI for 6-24 days was not cytotoxic but caused up to 60% depletion of mitochondrial DNA, and a similar reduction in mitochondrial membrane potential and NDUFA9 protein abundance. Mitochondrial DNA-depleted RPE cells demonstrated enhanced aerobic glycolysis by extracellular flux analysis, increased AMP kinase activation, reduced mTOR activity, and increased resistance to cell death in response to treatment with the oxidant, sodium iodate. We conclude that ddI-mediated mitochondrial DNA depletion promotes a glycolytic shift in differentiated RPE cells and enhances resistance to oxidative damage. Our use of ddI treatment to induce progressive depletion of mitochondrial DNA in differentiated human RPE cells should be widely applicable for other studies aimed at understanding RPE mitochondrial dysfunction in aging and disease.

Published
2019
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47. Association of a Primary Open-Angle Glaucoma Genetic Risk Score With Earlier Age at Diagnosis.

Author

Fan BJ, Bailey JC, Igo RP Jr, Kang JH, Boumenna T, Brilliant MH, Budenz DL, Fingert JH, Gaasterland T, Gaasterland D, Hauser MA, Kraft P, Lee RK, Lichter PR, Liu Y, Moroi SE, Myers JS, Pericak-Vance MA, Realini A, Rhee DJ, Richards JE, Ritch R, Schuman JS, Scott WK, Singh K, Sit AJ, Vollrath D, Weinreb RN, Wollstein G, Zack DJ, Haines JL, Pasquale LR, and Wiggs JL

Abstract

Importance: Genetic variants associated with primary open-angle glaucoma (POAG) are known to influence disease risk. However, the clinical effect of associated variants individually or in aggregate is not known. Genetic risk scores (GRS) examine the cumulative genetic load by combining individual genetic variants into a single measure, which is assumed to have a larger effect and increased power to detect relevant disease-related associations., Objective: To investigate if a GRS that comprised 12 POAG genetic risk variants is associated with age at disease diagnosis., Design, Setting, and Participants: A cross-sectional study included individuals with POAG and controls from the Glaucoma Genes and Environment (GLAUGEN) study and the National Eye Institute Glaucoma Human Genetics Collaboration (NEIGHBOR) study. A GRS was formulated using 12 variants known to be associated with POAG, and the alleles associated with increasing risk of POAG were aligned in the case-control sets. In case-only analyses, the association of the GRS with age at diagnosis was analyzed as an estimate of disease onset. Results from cohort-specific analyses were combined with meta-analysis. Data collection started in August 2012 for the NEIGHBOR cohort and in July 2008 for the GLAUGEN cohort and were analyzed starting in March 2018., Main Outcomes and Measures: Association of a 12 single-nucleotide polymorphism POAG GRS with age at diagnosis in individuals with POAG using linear regression., Results: The GLAUGEN study included 976 individuals with POAG and 1140 controls. The NEIGHBOR study included 2132 individuals with POAG and 2290 controls. For individuals with POAG, the mean (SD) age at diagnosis was 63.6 (9.8) years in the GLAUGEN cohort and 66.0 (13.7) years in the NEIGHBOR cohort. For controls, the mean (SD) age at enrollment was 65.5 (9.2) years in the GLAUGEN cohort and 68.9 (11.4) years in the NEIGHBOR cohort. All study participants were European white. The GRS was strongly associated with POAG risk in case-control analysis (odds ratio per 1-point increase in score = 1.24; 95% CI, 1.21-1.27; P = 3.4 × 10-66). In case-only analyses, each higher GRS unit was associated with a 0.36-year earlier age at diagnosis (β = -0.36; 95% CI, -0.56 to -0.16; P = 4.0 × 10-4). Individuals in the top 5% of the GRS had a mean (SD) age at diagnosis of 5.2 (12.8) years earlier than those in the bottom 5% GRS (61.4 [12.7] vs 66.6 [12.9] years; P = 5.0 × 10-4)., Conclusions and Relevance: A higher dose of POAG risk alleles was associated with an earlier age at glaucoma diagnosis. On average, individuals with POAG with the highest GRS had 5.2-year earlier age at diagnosis of disease. These results suggest that a GRS that comprised genetic variants associated with POAG could help identify patients with risk of earlier disease onset impacting screening and therapeutic strategies.

Published
2019
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48. Highly Differentiated Human Fetal RPE Cultures Are Resistant to the Accumulation and Toxicity of Lipofuscin-Like Material.

Author

Zhang Q, Presswalla F, Calton M, Charniga C, Stern J, Temple S, Vollrath D, Zacks DN, Ali RR, Thompson DA, and Miller JML

Subjects
Cells, Cultured, Humans, Optical Imaging, Phagocytosis physiology, Retinal Pigment Epithelium drug effects, Retinal Pigment Epithelium metabolism, Rod Cell Outer Segment physiology, Cell Differentiation physiology, Lipofuscin metabolism, Lipofuscin toxicity, Retinal Pigment Epithelium cytology
Abstract

Purpose: The accumulation of undigestible autofluorescent material (UAM), termed lipofuscin in vivo, is a hallmark of aged RPE. Lipofuscin derives, in part, from the incomplete degradation of phagocytized photoreceptor outer segments (OS). Whether this accumulated waste is toxic is unclear. We therefore investigated the effects of UAM in highly differentiated human fetal RPE (hfRPE) cultures., Methods: Unmodified and photo-oxidized OS were fed daily to confluent cultures of ARPE-19 RPE or hfRPE. The emission spectrum, composition, and morphology of resulting UAM were measured and compared to in vivo lipofuscin. Effects of UAM on multiple RPE phenotypes were assessed., Results: Compared to ARPE-19, hfRPE were markedly less susceptible to UAM buildup. Accumulated UAM in hfRPE initially resembled the morphology of lipofuscin from AMD eyes, but compacted and shifted spectrum over time to resemble lipofuscin from healthy aged human RPE. UAM accumulation mildly reduced transepithelial electrical resistance, ketogenesis, certain RPE differentiation markers, and phagocytosis efficiency, while inducing senescence and rare, focal pockets of epithelial-mesenchymal transition. However, it had no effects on mitochondrial oxygen consumption rate, certain other RPE differentiation markers, secretion of drusen components or polarity markers, nor cell death., Conclusions: hfRPE demonstrates a remarkable resistance to UAM accumulation, suggesting mechanisms for efficient OS processing that may be lost in other RPE culture models. Furthermore, while UAM alters hfRPE phenotype, the effects are modest, consistent with conflicting reports in the literature on the toxicity of lipofuscin. Our results suggest that healthy RPE may adequately adapt to and tolerate lipofuscin accumulation.

Published
2019
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49. Genetic analyses of human fetal retinal pigment epithelium gene expression suggest ocular disease mechanisms.

Author

Liu B, Calton MA, Abell NS, Benchorin G, Gloudemans MJ, Chen M, Hu J, Li X, Balliu B, Bok D, Montgomery SB, and Vollrath D

Subjects
Alcohol Oxidoreductases genetics, Cells, Cultured, Chromosome Mapping, Energy Metabolism, Fetus cytology, Fetus metabolism, Gene Expression, Genetic Variation, Genome-Wide Association Study, Humans, Macular Degeneration genetics, Myopia genetics, Nonsense Mediated mRNA Decay, Quantitative Trait Loci, Retinal Pigment Epithelium cytology, Retinal Pigment Epithelium embryology, Risk Factors, Transcriptome, Retinal Pigment Epithelium metabolism
Abstract

The retinal pigment epithelium (RPE) serves vital roles in ocular development and retinal homeostasis but has limited representation in large-scale functional genomics datasets. Understanding how common human genetic variants affect RPE gene expression could elucidate the sources of phenotypic variability in selected monogenic ocular diseases and pinpoint causal genes at genome-wide association study (GWAS) loci. We interrogated the genetics of gene expression of cultured human fetal RPE (fRPE) cells under two metabolic conditions and discovered hundreds of shared or condition-specific expression or splice quantitative trait loci (e/sQTLs). Co-localizations of fRPE e/sQTLs with age-related macular degeneration (AMD) and myopia GWAS data suggest new candidate genes, and mechanisms by which a common RDH5 allele contributes to both increased AMD risk and decreased myopia risk. Our study highlights the unique transcriptomic characteristics of fRPE and provides a resource to connect e/sQTLs in a critical ocular cell type to monogenic and complex eye disorders., Competing Interests: Competing interestsStephen Montgomery is on the Scientific Advisory Board of Prime Genomics. The remaining authors declare no competing interests.

Published
2019
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50. Abnormal mTORC1 signaling leads to retinal pigment epithelium degeneration.

Author

Huang J, Gu S, Chen M, Zhang SJ, Jiang Z, Chen X, Jiang C, Liu G, Radu RA, Sun X, Vollrath D, Du J, Yan B, and Zhao C

Subjects
Animals, Blotting, Western, Cells, Cultured, Disease Models, Animal, Electroretinography, Gene Expression Profiling, Histocytochemistry, Humans, Metabolome, Mice, Microscopy, Electron, Transmission, Microscopy, Fluorescence, Tomography, Optical Coherence, Mechanistic Target of Rapamycin Complex 1 metabolism, Retinal Degeneration physiopathology, Retinal Pigment Epithelium pathology, Signal Transduction
Abstract

Retinal pigment epithelial (RPE) degeneration is potentially involved in the pathogenesis of several retinal degenerative diseases. mTORC1 signaling is shown as a crucial regulator of many biological processes and disease progression. In this study, we aimed at investigating the role of mTORC1 signaling in RPE degeneration. Methods : Western blots were conducted to detect mTORC1 expression pattern during RPE degeneration. Cre-loxP system was used to generate RPE-specific mTORC1 activation mice. Fundus, immunofluorescence staining, transmission electron microscopy, and targeted metabolomic analysis were conducted to determine the effects of mTORC1 activation on RPE degeneration in vivo. Electroretinography, spectral-domain optical coherence tomography, and histological experiments were conducted to determine the effects of mTORC1 activation on choroidal and retinal function in vivo . Results : RPE-specific activation of mTORC1 led to RPE degeneration as shown by the loss of RPE-specific marker, compromised cell junction integrity, and intracellular accumulation of lipid droplets. RPE degeneration further led to abnormal choroidal and retinal function. The inhibition of mTORC1 signaling with rapamycin could partially reverse RPE degeneration. Targeted metabolomics analysis further revealed that mTORC1 activation affected the metabolism of purine, carboxylic acid, and niacin in RPE. Conclusion : This study revealed that abnormal activation of mTORC1 signaling leads to RPE degeneration, which could provide a promising target for the treatment of RPE dysfunction-related diseases., Competing Interests: Competing Interests: The authors have declared that no competing interest exists.

Published
2019
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