{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T03:11:11Z","timestamp":1790737871680,"version":"4.1.0"},"reference-count":90,"publisher":"PeerJ","license":[{"start":{"date-parts":[[2021,5,19]],"date-time":"2021-05-19T00:00:00Z","timestamp":1621382400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"CONACYT-M\u00e9xico grant CB-2015","award":["254483"],"award-info":[{"award-number":["254483"]}]},{"name":"SEP-PRODEP-Apoyo a Nuevos PTC","award":["UACJ-PTC-326"],"award-info":[{"award-number":["UACJ-PTC-326"]}]},{"name":"CONACYT-M\u00e9xico","award":["CVU 548217"],"award-info":[{"award-number":["CVU 548217"]}]},{"name":"CONACYT-M\u00e9xico","award":["U0004-20151"],"award-info":[{"award-number":["U0004-20151"]}]},{"name":"CONACYT-M\u00e9xico","award":["259915"],"award-info":[{"award-number":["259915"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Chronic psychological distress is considered today a pandemic due to the modern lifestyle and has been associated with various neurodegenerative, autoimmune, or systemic inflammation-related diseases. Stress is closely related to liver disease exacerbation through the high activity of the endocrine and autonomic nervous systems, and the connection between the development of these pathologies and the physiological effects induced by oxidative stress is not yet completely understood. The use of nootropics, as the cognitive enhancer and antioxidant piracetam, is attractive to repair the oxidative damage. A proteomic approach provides the possibility to obtain an in-depth comprehension of the affected cellular processes and the possible consequences for the body. Therefore, we considered to describe the effect of distress and piracetam on the liver proteome.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      We used a murine model of psychological stress by predatory odor as a distress paradigm. Female Sprague-Dawley rats were distributed into four experimental groups (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a06\u00a0\u2212\u00a07\/group) and were exposed or not to the stressor for five days and treated or not with piracetam (600 mg\/kg) for six days. We evaluated the liver proteome by one-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis (1D-SDS-PAGE) followed by liquid chromatography-tandem mass spectrometry (GeLC-MS\/MS). Besides, we analyzed the activity of liver antioxidant enzymes, the biochemical parameters in plasma and rat behavior.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Our results showed that distress altered a wide range of proteins involved in amino acids metabolism, glucose, and fatty acid mobilization and degradation on the way to produce energy, protein folding, trafficking and degradation, redox metabolism, and its implications in the development of the non-alcoholic fatty liver disease (NAFLD). Piracetam reverted the changes in metabolism caused by distress exposure, and, under physiological conditions, it increased catabolism rate directed towards energy production. These results confirm the possible relationship between chronic psychological stress and the progression of NAFLD, as well as we newly evidenced the controversial beneficial effects of piracetam. Finally, we propose new distress biomarkers in the liver as the protein DJ-1 (PARK7), glutathione peroxidase 1 (GPX), peroxiredoxin-5 (PRDX5), glutaredoxin 5 (GLRX5), and thioredoxin reductase 1 (TXNDR1), and in plasma as biochemical parameters related to kidney function such as urea and blood urea nitrogen (BUN) levels.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.7717\/peerj.11483","type":"journal-article","created":{"date-parts":[[2021,5,19]],"date-time":"2021-05-19T03:03:11Z","timestamp":1621393391000},"page":"e11483","source":"Crossref","is-referenced-by-count":8,"title":["Liver proteome alterations in psychologically distressed rats and a nootropic drug"],"prefix":"10.7717","volume":"9","author":[{"given":"Raquel","family":"Gonz\u00e1lez-Fern\u00e1ndez","sequence":"first","affiliation":[{"name":"Departamento de Ciencias Qu\u00edmico Biol\u00f3gicas, Instituto de Ciencias Biom\u00e9dicas, Universidad Aut\u00f3noma de Ciudad Ju\u00e1rez, Ciudad Ju\u00e1rez, Chihuahua, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariana","family":"Grigoru\u0163\u0103","sequence":"additional","affiliation":[{"name":"Departamento de Ciencias Qu\u00edmico Biol\u00f3gicas, Instituto de Ciencias Biom\u00e9dicas, Universidad Aut\u00f3noma de Ciudad Ju\u00e1rez, Ciudad Ju\u00e1rez, Chihuahua, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarahi","family":"Ch\u00e1vez-Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Departamento de Ciencias Qu\u00edmico Biol\u00f3gicas, Instituto de Ciencias Biom\u00e9dicas, Universidad Aut\u00f3noma de Ciudad Ju\u00e1rez, Ciudad Ju\u00e1rez, Chihuahua, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eliel","family":"Ruiz-May","sequence":"additional","affiliation":[{"name":"Red de Estudios Moleculares Avanzados, Instituto de Ecolog\u00eda A.C. (INECOL), Xalapa, Veracruz, M\u00e9xico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 Miguel","family":"Elizalde-Contreras","sequence":"additional","affiliation":[{"name":"Red de Estudios Moleculares Avanzados, Instituto de Ecolog\u00eda A.C. (INECOL), Xalapa, Veracruz, M\u00e9xico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9","family":"Valero-Galv\u00e1n","sequence":"additional","affiliation":[{"name":"Departamento de Ciencias Qu\u00edmico Biol\u00f3gicas, Instituto de Ciencias Biom\u00e9dicas, Universidad Aut\u00f3noma de Ciudad Ju\u00e1rez, Ciudad Ju\u00e1rez, Chihuahua, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alejandro","family":"Mart\u00ednez-Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Departamento de Ciencias Qu\u00edmico Biol\u00f3gicas, Instituto de Ciencias Biom\u00e9dicas, Universidad Aut\u00f3noma de Ciudad Ju\u00e1rez, Ciudad Ju\u00e1rez, Chihuahua, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"4443","published-online":{"date-parts":[[2021,5,19]]},"reference":[{"key":"10.7717\/peerj.11483\/ref-1","doi-asserted-by":"publisher","first-page":"1062","DOI":"10.1007\/s11064-011-0450-1","article-title":"Oxidative 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