{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T15:44:22Z","timestamp":1791474262752,"version":"4.3.4"},"reference-count":81,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2022,7,1]],"date-time":"2022-07-01T00:00:00Z","timestamp":1656633600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010576","name":"Iowa Pork Producers Association","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100010576","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,7,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Heat stress (HS) deleteriously affects multiple components of porcine reproduction and is causal to seasonal infertility. Environment-induced hyperthermia causes a HS response (HSR) typically characterized by increased abundance of intracellular heat shock proteins (HSP). Gilts exposed to HS during the peri-implantation period have compromised embryo survival, however if (or how) HS disrupts the porcine endometrium is not understood. Study objectives were to evaluate the endometrial HSP abundance in response to HS during this period and assess the effect of oral progestin (altrenogest; ALT) supplementation. Postpubertal gilts (n = 42) were artificially inseminated during behavioral estrus (n = 28) or were kept cyclic (n = 14), and randomly assigned to thermal neutral (TN; 21 \u00b1 1 \u00b0C) or diurnal HS (35 \u00b1 1 \u00b0C for 12 h\/31.6 \u00b1 1 \u00b0C for 12 h) conditions from day 3 to 12 postestrus (dpe). Seven of the inseminated gilts from each thermal treatment group received ALT (15 mg\/d) during this period. Using quantitative PCR, transcript abundance of HSP family A (Hsp70) member 1A (HSPA1A, P = 0.001) and member 6 (HSPA6, P &amp;lt; 0.001), and HSP family B (small) member 8 (HSB8, P = 0.001) were increased while HSP family D (Hsp60) member 1 (HSPD1, P = 0.01) was decreased in the endometrium of pregnant gilts compared to the cyclic gilts. Protein abundance of HSPA1A decreased (P = 0.03) in pregnant gilt endometrium due to HS, while HSP family B (small) member 1 (HSPB1) increased (P = 0.01) due to HS. Oral ALT supplementation during HS reduced the transcript abundance of HSP90\u03b1 family class B member 1 (HSP90AB1, P = 0.04); but HS increased HSP90AB1 (P = 0.001), HSPA1A (P = 0.02), and HSPA6 (P = 0.04) transcript abundance irrespective of ALT. ALT supplementation decreased HSP90\u03b1 family class A member 1 (HSP90AA1, P = 0.001) protein abundance, irrespective of thermal environment, whereas ALT only decreased HSPA6 (P = 0.02) protein abundance in TN gilts. These results indicate a notable shift of HSP in the porcine endometrium during the peri-implantation period in response to pregnancy status and heat stress.<\/jats:p>","DOI":"10.1093\/jas\/skac129","type":"journal-article","created":{"date-parts":[[2022,7,1]],"date-time":"2022-07-01T00:09:32Z","timestamp":1656634172000},"source":"Crossref","is-referenced-by-count":13,"title":["Porcine endometrial heat shock proteins are differentially influenced by pregnancy status, heat stress, and altrenogest supplementation during the peri-implantation period"],"prefix":"10.1093","volume":"100","author":[{"given":"Malavika K","family":"Adur","sequence":"first","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0563-7046","authenticated-orcid":false,"given":"Jacob T","family":"Seibert","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew R","family":"Romoser","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6920-6339","authenticated-orcid":false,"given":"Katie L","family":"Bidne","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lance H","family":"Baumgard","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aileen F","family":"Keating","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4950-2258","authenticated-orcid":false,"given":"Jason W","family":"Ross","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Iowa State University , Ames, IA 50011 , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2022,7,1]]},"reference":[{"key":"2022070100074515600_CIT0001","doi-asserted-by":"crossref","first-page":"87","DOI":"10.5317\/wjog.v5.i1.87","article-title":"Apoptosis and endometrial receptivity: relationship within vitrofertilization treatment outcome","volume":"5","author":"Antsiferova","year":"2016","journal-title":"World J. 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