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Psoriasis is a noncontagious auto\u2010inflammatory chronic skin disease. So far, some of the inflammatory genes were upregulated in mouse model of psoriasis. This study examined changes in skin mRNA expression of L\u2010kynureninase (<jats:italic>Kynu<\/jats:italic>), cathelicidin antimicrobial peptide (<jats:italic>Camp<\/jats:italic>), beta\u2010defensin 2 (<jats:italic>Defb2<\/jats:italic>), and proenkephalin (<jats:italic>Penk<\/jats:italic>) in a mouse model of imiquimod\u2010induced psoriasis. <jats:italic>Materials and Methods<\/jats:italic>. Tree groups of C57BL\/6 female mice were allocated. The imiquimod (IMQ) cream was administered to the mice dorsal skin of the two groups to induce psoriatic inflammation. In the treatment group, IMQ was administered 10\u2009min after hydrogel\u2010containing M7 anti\u2010IL\u201017A aptamer treatment. Vaseline (Vas) was administered to the negative control group. The psoriatic skin lesions were evaluated based on the psoriasis area severity index (PASI) score, histopathology, and mRNA expression levels of <jats:italic>Kynu<\/jats:italic>, <jats:italic>Camp<\/jats:italic>, <jats:italic>Defb2<\/jats:italic>, and <jats:italic>Penk<\/jats:italic> using real\u2010time PCR. In order to assess the systemic response, the spleen and lymph node indexes were also evaluated. <jats:italic>Results<\/jats:italic>. The PASI and epidermal thickness scores were 6.01 and 1.96, respectively, in the IMQ group, and they significantly decreased after aptamer administration to 1.15 and 0.90, respectively (<jats:italic>P<\/jats:italic> &lt; 0.05). Spleen and lymph node indexes showed an increase in the IMQ group, followed by a slight decrease after aptamer treatment (<jats:italic>P<\/jats:italic> &gt; 0.05). Additionally, the mRNA expression levels of <jats:italic>Kynu<\/jats:italic>, <jats:italic>Defb2<\/jats:italic>, <jats:italic>Camp<\/jats:italic>, and <jats:italic>Penk<\/jats:italic> genes in the IMQ\u2010treated region showed a significant 2.70, 4.56, 3.29, and 2.61\u2010fold increase relative to the Vas mice, respectively (<jats:italic>P<\/jats:italic> &lt; 0.05). The aptamer\u2010treated region exhibited a significant decrease in these gene expression levels (<jats:italic>P<\/jats:italic> &lt; 0.05). A positive correlation was found between <jats:italic>Kynu<\/jats:italic>, <jats:italic>Penk<\/jats:italic>, and <jats:italic>Camp<\/jats:italic> expression levels and erythema, as well as <jats:italic>Camp<\/jats:italic> expression with PASI, scaling, and thickness (<jats:italic>P<\/jats:italic> &lt; 0.05). <jats:italic>Conclusion<\/jats:italic>. According to our results, it seems that <jats:italic>Kynu<\/jats:italic>, <jats:italic>Camp<\/jats:italic>, and <jats:italic>Penk<\/jats:italic> can be considered appropriate markers for the evaluation of psoriasis in IMQ\u2010induced psoriasis. Also, the anti\u2010IL\u201017 aptamer downregulated these important genes in this mouse model.<\/jats:p>","DOI":"10.1155\/2024\/5821996","type":"journal-article","created":{"date-parts":[[2024,7,16]],"date-time":"2024-07-16T15:40:59Z","timestamp":1721144459000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Evaluation of <i>Kynu<\/i>, <i>Defb2<\/i>, <i>Camp<\/i>, and <i>Penk<\/i> Expression Levels as Psoriasis Marker in the Imiquimod\u2010Induced Psoriasis Model"],"prefix":"10.1155","volume":"2024","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7320-9476","authenticated-orcid":false,"given":"Zahra","family":"Emami","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6642-7400","authenticated-orcid":false,"given":"Saeideh Sadat","family":"Shobeiri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-1418-2697","authenticated-orcid":false,"given":"Razia","family":"Khorrami","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8479-6496","authenticated-orcid":false,"given":"Navideh","family":"Haghnavaz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9550-3492","authenticated-orcid":false,"given":"Mohammad Ali","family":"Rezaee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0286-529X","authenticated-orcid":false,"given":"Malihe","family":"Moghadam","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4275-5842","authenticated-orcid":false,"given":"Safoora","family":"Pordel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0602-6431","authenticated-orcid":false,"given":"Mojtaba","family":"Sankian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,16]]},"reference":[{"key":"e_1_2_11_1_2","doi-asserted-by":"crossref","unstructured":"RendonA.andSch\u00e4kelK. 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