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Levels of serum Hcy were measured using immunoassay, and those of serum vitamin B12 and folic acid were measured using competitive chemiluminescent enzyme immunoassay.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>The mean Hcy concentration in the PEXG group was significantly higher (P &lt; 0.001) as compared to the other groups. There were no significant differences with respect to the mean Hcy concentrations among other groups (P &gt; 0.05). There were no statistical differences in serum vitamin B12 levels among POAG, PEXG, NTG and control subjects (P &gt; 0.05).<\/jats:p>\n            <jats:p>The mean serum folic acid level was significantly lower in the subjects with PEXG (P &lt; 0.009). However, the mean folic acid concentrations among the other groups did not differ significantly (P &gt; 0.05).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>Elevated levels of Hcy in PEXG may explain the role of endothelial dysfunction among patients with PEXG.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1471-2415-6-6","type":"journal-article","created":{"date-parts":[[2006,2,24]],"date-time":"2006-02-24T07:32:14Z","timestamp":1140766334000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["Serum homocysteine, vitamin B 12 and folic acid levels in different types of glaucoma"],"prefix":"10.1186","volume":"6","author":[{"given":"Tongabay","family":"Cumurcu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Semsettin","family":"Sahin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erdinc","family":"Aydin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2006,2,23]]},"reference":[{"key":"68_CR1","doi-asserted-by":"publisher","first-page":"359","DOI":"10.1016\/S1350-9462(02)00008-3","volume":"21","author":"J Flammer","year":"2002","unstructured":"Flammer J, Orgul S, Costa VP, Orzalesi N, Krieglstein GK, Serra LM, Renard JP, Stefansson E: The impact of ocular blood flow in glaucoma. 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