{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T13:01:22Z","timestamp":1769605282401,"version":"3.49.0"},"reference-count":12,"publisher":"Wiley","license":[{"start":{"date-parts":[[2020,9,28]],"date-time":"2020-09-28T00:00:00Z","timestamp":1601251200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Case Reports in Neurological Medicine"],"published-print":{"date-parts":[[2020,9,28]]},"abstract":"<p>Objectives. Although endocrinologic involvement and epilepsy are frequent features of myoclonic epilepsy with ragged-red fibers (MERRF), polycystic ovary syndrome (PCOS) and photosensitive epilepsy have not been reported. Case Report. A 32-year-old female was diagnosed with MERRF at age 19\u2009y upon presence of the four canonical features and the variant m.8344A\u2009&gt;\u2009G in MT-TK (tRNA (Lys)) (blood heteroplasmy rate: 50%). She experienced recurrent photosensitive focal and generalised seizures since age 19\u2009y, which could be triggered by flickering light or by looking at small stones, leaves, or dirty snow on the ground. Since the last 42 months, she was seizure-free upon levetiracetam (4000\u2009mg\/d), clonazepam (1.5\u2009mg\/d), and topiramate (25\u2009mg\/d). Additionally, she suffered from secondary amenorrhoea since adolescence. She was married between ages 19\u2009y and 25\u2009y but did not get pregnant. PCOS was diagnosed and treated with desogestrel plus estradiol. Nonetheless, the course was progressive, particularly with regard to ataxia, myocloni, and myopathy. Conclusions. The phenotypic spectrum of MERRF is broader than anticipated and may additionally include PCOS and photosensitive epilepsy. PCOS in MERRF may respond to hormone substitution and photosensitive epilepsy to levetiracetam, clonazepam, and topiramate.<\/p>","DOI":"10.1155\/2020\/8876272","type":"journal-article","created":{"date-parts":[[2020,9,29]],"date-time":"2020-09-29T15:21:53Z","timestamp":1601392913000},"page":"1-4","source":"Crossref","is-referenced-by-count":5,"title":["Photosensitive Epilepsy and Polycystic Ovary Syndrome as Manifestations of MERRF"],"prefix":"10.1155","volume":"2020","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2839-7305","authenticated-orcid":false,"given":"Josef","family":"Finsterer","sequence":"first","affiliation":[{"name":"Klinik Landstrasse, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Berlit","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pediatrneurol.2017.12.005"},{"key":"2","volume-title":"GeneReviews\u00ae","author":"DiMauro","year":"2003"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1080\/14656566.2019.1609941"},{"key":"4","first-page":"13","article-title":"Dysfunction of the hypothalamic-pituitary system in mitochondrial encephalomyopathies","volume":"29","author":"Ohkoshi","year":"1998","journal-title":"Journal of Medicine"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1016\/j.seizure.2017.04.001"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1272\/jnms.jnms.2018_85-46"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejpn.2014.07.004"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1007\/s11920-017-0809-3"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1016\/j.gene.2017.11.049"},{"issue":"1","key":"10","first-page":"13","article-title":"Polycystic ovary syndrome in mitochondrial disorders due mtDNA or nDNA variants","volume":"10","author":"Finsterer","year":"2018","journal-title":"American Journal of Translational Research"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.5114\/fn.2013.39726"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1016\/j.braindev.2012.08.006"}],"container-title":["Case Reports in Neurological Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/crinm\/2020\/8876272.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/crinm\/2020\/8876272.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/crinm\/2020\/8876272.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,29]],"date-time":"2020-09-29T15:21:56Z","timestamp":1601392916000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/crinm\/2020\/8876272"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9,28]]},"references-count":12,"alternative-id":["8876272","8876272"],"URL":"https:\/\/doi.org\/10.1155\/2020\/8876272","relation":{},"ISSN":["2090-6676","2090-6668"],"issn-type":[{"value":"2090-6676","type":"electronic"},{"value":"2090-6668","type":"print"}],"subject":[],"published":{"date-parts":[[2020,9,28]]}}}