{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T07:26:21Z","timestamp":1772781981243,"version":"3.50.1"},"reference-count":27,"publisher":"BMJ","issue":"7","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["British Journal of Ophthalmology"],"published-print":{"date-parts":[[1982,7,1]]},"DOI":"10.1136\/bjo.66.7.417","type":"journal-article","created":{"date-parts":[[2007,9,18]],"date-time":"2007-09-18T21:53:19Z","timestamp":1190152399000},"page":"417-421","source":"Crossref","is-referenced-by-count":7,"title":["Absence of abnormal erythrocyte superoxide dismutase, copper, or zinc levels in patients with retinitis pigmentosa."],"prefix":"10.1136","volume":"66","author":[{"given":"R. K.","family":"Crouch","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. K.","family":"Chambers","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"770","DOI":"10.1136\/bjo.60.11.770","article-title":"Copper metabolism in retinitis pigmentosa","volume":"60","author":"DK, I.Gahlot; PK, Khosla; PD, Makashir; K, Vasuki; N, Basu","year":"1976","unstructured":"I Gahlot DK, Khosla PK, Makashir PD, Vasuki K, Basu N. Copper metabolism in retinitis pigmentosa. Br J Ophthalmol 1976; 60: 770-4.","journal-title":"Br J Ophthalmol"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1136\/bjo.65.2.127","article-title":"Copper metabolism in retinitis pigmentosa patients","volume":"65","author":"Rao, S.S.; Satapathy, M.; Sitaramayya, A.","year":"1981","unstructured":"Rao SS, Satapathy M, Sitaramayya A. Copper metabolism in retinitis pigmentosa patients. Br J Ophthabnol 1981; 65: 127-30.","journal-title":"Br J Ophthabnol"},{"key":"ref_3","first-page":"43","article-title":"Trace metals in a family with sex-linked retinitis pigmentosa","volume-title":"Retinitis Pigmentosa-Clinical Implications of Current Research","author":"Bastek, J.; Bogden, J.; Cinotti, A.; etal","year":"1977","unstructured":"Bastek J, Bogden J, Cinotti A, etal. Trace metals in a family with sex-linked retinitis pigmentosa. In: Landers MB, Wolbarsht ML, Dowling JE, Laties AM, eds. Retinitis Pigmentosa-Clinical Implications of Current Research. New York: Plenum Press, 1977; 43-50."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"595","DOI":"10.1136\/bjo.61.9.595","article-title":"Clinical copper metabolism parameters in patients with retinitis pigmentosa and other tapeto-retinal degenerations","volume":"61","author":"Ehlers, N.; Biilow, N.","year":"1977","unstructured":"Ehlers N, Biilow N. Clinical copper metabolism parameters in patients with retinitis pigmentosa and other tapeto-retinal degenerations. Br J Ophthalmol 1977; 61: 595-6.","journal-title":"Br J Ophthalmol"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1136\/bjo.62.3.168","article-title":"Copper metabolism in American retinitis pigmentosa patients","volume":"62","author":"Marmor, M.F.; Nelson, J.W.; Levin, A.S.","year":"1978","unstructured":"Marmor MF, Nelson JW, Levin AS. Copper metabolism in American retinitis pigmentosa patients. Br J Ophthalmol 1978; 62: 168-71.","journal-title":"Br J Ophthalmol"},{"key":"ref_6","first-page":"56","article-title":"Trace Elements in Human and Animnal Nutrition","author":"Underwood, E.J.","year":"1977","unstructured":"Underwood EJ. Trace Elements in Human and Animnal Nutrition. New York: Academic Press, 1977; 56-108."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"2182","DOI":"10.1016\/S0021-9258(17)33675-X","article-title":"In vivo inhibition of superoxide dismutase in mice by diethyedithiocarbamate","volume":"25","author":"Heikkila, R.E.; Cabbat, F.S.; Cohen, G.","year":"1976","unstructured":"Heikkila RE, Cabbat FS, Cohen G. In vivo inhibition of superoxide dismutase in mice by diethyedithiocarbamate. J Biol Chem 1976; 25: 2182-5.","journal-title":"J Biol Chem"},{"key":"ref_8","first-page":"534","article-title":"Superoxide dismutase activity","volume-title":"copper-deficient swine. Proc Soc Exp Biol Med","volume":"149","author":"Williams, D.M.; Lynch, R.E.; Lee, G.R.; Cartwright, G.E.","year":"1975","unstructured":"Williams DM, Lynch RE, Lee GR, Cartwright GE. Superoxide dismutase activity in copper-deficient swine. Proc Soc Exp Biol Med 1975; 149:534-6."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"939","DOI":"10.1093\/jn\/109.6.939","article-title":"Copper requirement of baby pigs fed purified diets","volume":"109","author":"Okonkwo, A.C.; Ku, P.K.; Miller, E.R.; Keahey, K.K.; Ullrey, D.E.","year":"1979","unstructured":"Okonkwo AC, Ku PK, Miller ER, Keahey KK, Ullrey DE. Copper requirement of baby pigs fed purified diets. J Nutr 1979; 109:939-48.","journal-title":"J Nutr"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1570","DOI":"10.1093\/jn\/109.9.1570","article-title":"Changes in activity of the Cu-Zn superoxide dismutase enzyme in tissue of the rat with changes in dietary copper","volume":"109","author":"Paynter, D.I.; Moir, R.J.; Underwood, E.J.","year":"1979","unstructured":"Paynter DI, Moir RJ, Underwood EJ. Changes in activity of the Cu-Zn superoxide dismutase enzyme in tissue of the rat with changes in dietary copper. J Nutr 1979; 109: 1570-6.","journal-title":"J Nutr"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1007\/BF01846029","article-title":"Changes in erythrocyte superoxide dismutase in a patient with copper deficiency","volume":"134","author":"Okhata, S.; Nishi, Y.; Hatano, S.; Kobayashi, Y.; Usui, T.","year":"1980","unstructured":"Okhata S, Nishi Y, Hatano S, Kobayashi Y, Usui T. Changes in erythrocyte superoxide dismutase in a patient with copper deficiency. Eur J Pediatr 1980; 134: 121-4.","journal-title":"Eur J Pediatr"},{"key":"ref_12","first-page":"351","article-title":"The association of the copper derived from ceruloplasmin with cytocuprein","volume":"328","author":"Marceau, N.; Aspin, N.","year":"1973","unstructured":"Marceau N, Aspin N. The association of the copper derived from ceruloplasmin with cytocuprein. Biochem Biophys Acta 1973; 328:351-8.","journal-title":"Biochem Biophys Acta"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"503","DOI":"10.1016\/0014-4835(78)90135-5","article-title":"Superoxide dismutase activities of bovine ocular tissues","volume":"27","author":"Crouch, R.; Priest, D.G.; Duke, E.J.","year":"1978","unstructured":"Crouch R, Priest DG, Duke EJ. Superoxide dismutase activities of bovine ocular tissues. Exp Eye Res 1978; 27: 503-9.","journal-title":"Exp Eye Res"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"875","DOI":"10.1126\/science.210504","article-title":"The biology of oxygen radicals","author":"Fridovich, I.","year":"1978","unstructured":"Fridovich I. The biology of oxygen radicals. Science 1978; 201: 875-80.","journal-title":"Science"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1016\/0309-1651(78)90032-2","article-title":"Biochemical mechanisms accounting for the toxic action of oxygen on living organisms: the key role of superoxide dismutase","volume":"2","author":"Halliwell, B.","year":"1978","unstructured":"Halliwell B. Biochemical mechanisms accounting for the toxic action of oxygen on living organisms: the key role of superoxide dismutase. Cell Biol Int Rep 1978; 2: 113-28.","journal-title":"Cell Biol Int Rep"},{"key":"ref_16","first-page":"51","article-title":"Spectrophotometric studies. II. Preparations from washed blood cells; nitric oxide hemoglobin and sulfhemoglobin","volume":"112","author":"Drabkin, D.L.; Austin, J.H.","year":"1935","unstructured":"Drabkin DL, Austin JH. Spectrophotometric studies. II. Preparations from washed blood cells; nitric oxide hemoglobin and sulfhemoglobin. J Biol Chem 1935; 112: 51-65.","journal-title":"J Biol Chem"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"389","DOI":"10.1016\/0003-2697(72)90132-7","article-title":"Colorimetric assay of catalase","volume":"47","author":"Sinha, A.K.","year":"1972","unstructured":"Sinha AK. Colorimetric assay of catalase. Anal Biochem 1972; 47:389-94.","journal-title":"Anal Biochem"},{"key":"ref_18","first-page":"337","article-title":"The estimation of red cell superoxide dismutase activity","volume":"85","author":"Winterboum, C.C.; Hawkins, R.E.; Brian, M.; Carrell, R.W.","year":"1975","unstructured":"Winterboum CC, Hawkins RE, Brian M, Carrell RW. The estimation of red cell superoxide dismutase activity. J Lab Clin Med 1975; 85: 337-41.","journal-title":"J Lab Clin Med"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"276","DOI":"10.1016\/0003-2697(71)90370-8","article-title":"Superoxide dismutase: improved assays and an assay applicable to acrylamide gels","volume":"44","author":"Beauchamp, C.; Fridovich, I.","year":"1971","unstructured":"Beauchamp C, Fridovich I. Superoxide dismutase: improved assays and an assay applicable to acrylamide gels. Anal Biochem 1971; 44: 276-87.","journal-title":"Anal Biochem"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1093\/clinchem\/13.1.40","article-title":"Determination of copper and zinc in biological material","volume":"13","author":"Parker, M.M.; Humoller, F.; Mahler, D.J.","year":"1967","unstructured":"Parker MM, Humoller F, Mahler DJ. Determination of copper and zinc in biological material. Clin Chem 1967; 13: 40-8.","journal-title":"Clin Chem"},{"key":"ref_21","article-title":"Principles and Procedures of Statistics","author":"Steel, R.G.D.; Torrie, J.H.","year":"1960","unstructured":"Steel RGD, Torrie JH. Principles and Procedures of Statistics. New York: McGraw Hill, 1960."},{"key":"ref_22","first-page":"32","article-title":"Disc Electrophoresis and Related Techniques of Polyacrylamide Gel Electrophoresis","author":"Maurer, H.R.","year":"1971","unstructured":"Maurer HR. Disc Electrophoresis and Related Techniques of Polyacrylamide Gel Electrophoresis. New York: Walter deGruyter, 1971: 32-110."},{"key":"ref_23","article-title":"Laboratory techniques in biochemistry and molecular biology. Isoelectric Focusing","volume-title":"5: part 2","author":"Righetti, P.G.; Drysdale, J.W.","year":"1976","unstructured":"Righetti PG, Drysdale JW. Laboratory techniques in biochemistry and molecular biology. Isoelectric Focusing. Amsterdam: North Holland, 1976: 5: part 2."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"4406","DOI":"10.1016\/S0021-9258(18)94333-4","article-title":"The reliability of molecular weight determinations by dodecyl sulfate-polyacrylamide gel electrophoresis","volume":"244","author":"Weber, K.; Osborn, M.","year":"1969","unstructured":"Weber K, Osborn M. The reliability of molecular weight determinations by dodecyl sulfate-polyacrylamide gel electrophoresis. J Biol Chem 1969; 244: 4406-12.","journal-title":"J Biol Chem"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"763","DOI":"10.1016\/0002-9394(80)90163-4","article-title":"Risk factors for genetic typing and detection in retinitis pigmentosa","volume":"89","author":"Berson, E.L.; Rosner, B.; Simonoff, E.","year":"1980","unstructured":"Berson EL, Rosner B, Simonoff E. Risk factors for genetic typing and detection in retinitis pigmentosa. Am J Ophthalmol 1980; 89: 763-75.","journal-title":"Am J Ophthalmol"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"4565","DOI":"10.1016\/S0021-9258(18)93663-X","article-title":"Preparation and physicochemical properties of human erythrocuprein","volume":"244","author":"Hartz, J.W.; Deutsch, H.F.","year":"1969","unstructured":"Hartz JW, Deutsch HF. Preparation and physicochemical properties of human erythrocuprein. J Biol Chem 1969; 244: 4565-72.","journal-title":"J Biol Chem"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"617","DOI":"10.1111\/j.1432-1033.1976.tb10266.x","article-title":"Rat-liver superoxide dismutase. Purification and age-related modifications","volume":"63","author":"Reiss, U.; Gershon, D.","year":"1976","unstructured":"Reiss U, Gershon D. Rat-liver superoxide dismutase. Purification and age-related modifications. Eur J Biochem 1976; 63:617-23.","journal-title":"Eur J Biochem"}],"container-title":["British Journal of Ophthalmology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bjo.66.7.417","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,8,23]],"date-time":"2021-08-23T19:37:12Z","timestamp":1629747432000},"score":1,"resource":{"primary":{"URL":"https:\/\/bjo.bmj.com\/lookup\/doi\/10.1136\/bjo.66.7.417"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1982,7,1]]},"references-count":27,"journal-issue":{"issue":"7","published-print":{"date-parts":[[1982,7,1]]}},"URL":"https:\/\/doi.org\/10.1136\/bjo.66.7.417","relation":{},"ISSN":["0007-1161"],"issn-type":[{"value":"0007-1161","type":"print"}],"subject":[],"published":{"date-parts":[[1982,7,1]]}}}