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These disorders disrupt some cognitive abilities. Identifying biomarkers for these disorders is a cornerstone to their proper management. Kynurenine (KYN) and oxidative stress markers have been reported to influence some cognitive abilities. Therefore, the aim was to measure the level of KYN and some oxidative stress indicators in children with LD with and without ADHD and to investigate their correlations with the abilities of children with LD.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The study included 154 participants who were divided into 3 groups: one for children who have LD (<jats:italic>N<\/jats:italic>\u2009=\u200969); another for children with LD and ADHD (<jats:italic>N<\/jats:italic>\u2009=\u200931); and a group for neurotypical (NT) children (<jats:italic>N<\/jats:italic>\u2009=\u200954). IQ testing, reading, writing, and other ability performance evaluation was performed for children with LD. Measuring plasma levels of KYN, malondialdehyde, glutathione peroxidase, and superoxide dismutase by enzyme-linked immunosorbent assay was performed for all participants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Some IQ measures and learning skills differed between the first two groups. The biochemical measures differed between children with LD (with and without ADHD) and NT children (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). However, the biochemical measures did not show a significant statistical difference between the first two groups. KYN and glutathione peroxidase levels were correlated with one-minute writing and at-risk quotient, respectively (<jats:italic>p<\/jats:italic>\u2009=\u20090.03;0.04). KYN and malondialdehyde showed the highest sensitivity and specificity values.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>These biochemical measures could be involved or have a role in the abilities\u2019 performance of children with specific learning disorder.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s12883-022-02886-w","type":"journal-article","created":{"date-parts":[[2022,9,20]],"date-time":"2022-09-20T04:02:53Z","timestamp":1663646573000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Kynurenine and oxidative stress in children having learning disorder with and without attention deficit hyperactivity disorder: possible role and involvement"],"prefix":"10.1186","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3157-8396","authenticated-orcid":false,"given":"Ayman","family":"Kilany","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1553-9327","authenticated-orcid":false,"given":"Neveen Hassan","family":"Nashaat","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7631-9286","authenticated-orcid":false,"given":"Hala M.","family":"Zeidan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9549-2973","authenticated-orcid":false,"given":"Adel F.","family":"Hashish","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4809-4435","authenticated-orcid":false,"given":"Mostafa M.","family":"El-Saied","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0899-8261","authenticated-orcid":false,"given":"Ehab Ragaa","family":"Abdelraouf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,9,20]]},"reference":[{"key":"2886_CR1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890425596","volume-title":"Diagnostic and statistical manual of mental disorders","author":"American Psychiatric Association","year":"2013","unstructured":"American Psychiatric Association. 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