{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T11:18:54Z","timestamp":1769771934451,"version":"3.49.0"},"reference-count":54,"publisher":"Public Library of Science (PLoS)","issue":"1","license":[{"start":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T00:00:00Z","timestamp":1769644800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81960592"],"award-info":[{"award-number":["81960592"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82073569"],"award-info":[{"award-number":["82073569"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82260645"],"award-info":[{"award-number":["82260645"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005147","name":"Applied Basic Research Key Project of Yunnan","doi-asserted-by":"publisher","award":["202101AS070040"],"award-info":[{"award-number":["202101AS070040"]}],"id":[{"id":"10.13039\/501100005147","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Special Project for Selection of High-level Scientific and Technological Talents and Innovation Team-Reserve Talent Program for Young and Middle-aged Academic and Technical Leaders","award":["202005AC160023"],"award-info":[{"award-number":["202005AC160023"]}]},{"name":"Basic Research of Yunnan Province-Excellent Youth Project","award":["202001AW070021"],"award-info":[{"award-number":["202001AW070021"]}]},{"name":"Yunnan Province Joint Special Project of Kunming Medical University","award":["202101AY070001"],"award-info":[{"award-number":["202101AY070001"]}]},{"name":"Doctoral Research Fund Pro-ject of the First Afiliated Hospital of Kunming Medical University","award":["2022BS013"],"award-info":[{"award-number":["2022BS013"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:sec id=\"sec001\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Depression is a prevalent psychological challenge during pregnancy, with established links to adverse outcomes like preterm birth (PTB) globally. However, epidemiological data from China\u2019s multiethnic regions are scarce, and experimental evidence supporting a causal relationship remains limited. This study aimed to investigate the association between prenatal depressive symptoms and the risk of PTB in a cohort from Yunnan, China, and to provide supportive evidence using a mouse model of depression.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec002\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We recruited 1,466 women during their first-trimester routine visits at Qujing Hospital. Depressive symptoms were assessed using the Chinese version of the Edinburgh Postnatal Depression Scale (EPDS), a screening tool, with a score \u226512 indicating elevated symptoms suggestive of depression. PTB was defined as delivery before 37 gestational weeks, confirmed by ultrasound. In parallel, a mouse model of depression was established using Chronic Unpredictable Mild Stress (CUMS) for 6 weeks prior to mating. PTB in mice was defined as delivery before 19 days of gestation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec003\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In the cohort study, the incidence of PTB was significantly higher in women with prenatal depressive symptoms compared to those without (8.43% vs. 3.83%, P\u2009&lt;\u20090.001). The association remained significant after adjusting for sociodemographic and clinical confounders, with an adjusted risk ratio (aRR) of 2.19 (95% CI: 1.32\u20133.63). This association showed a significant dose-response pattern (P for trend\u2009=\u20090.03), with the risk being highest for women with moderate depressive symptoms (aRR\u2009=\u20092.44, 95% CI: 1.30\u20134.58). In the animal experiments, PTB did not occur in the control mice, whereas 40% of the mice exposed to CUMS (depression model group) delivered prematurely.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec004\">\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This study demonstrates a significant association between prenatal depressive symptoms and an increased risk of preterm birth in a Chinese multiethnic cohort. Experimental findings from a mouse model further suggest a potential contributory role of depression to PTB. These results underscore the importance of screening for and addressing maternal mental health during pregnancy. Future research should focus on underlying mechanisms and intervention strategies to mitigate this risk.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1371\/journal.pone.0341449","type":"journal-article","created":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T18:25:30Z","timestamp":1769711130000},"page":"e0341449","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Association between depression during pregnancy and preterm birth: Results from population cohorts and mouse experimental 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