02566naa a2200385 a 450000100080000000500110000800800410001902400470006010000200010724501680012726000090029552014990030465000170180365000230182065000100184365000100185365000100186365000240187365300170189765300170191465300190193165300230195065300080197365300120198165300120199370000140200570000190201970000140203870000180205270000170207070000190208770000160210670000190212277300390214121501432022-12-21       2022    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.3390/genes130507692DOI1 aSILVA, A. N. da  aHousing Conditions and a Challenge with Lipopolysaccharide on the Day of Estrus Can Influence Gene Expression of the Corpus Luteum in Gilts.h[electronic resource]  c2022  aAbstract: The corpus luteum (CL) is a temporary endocrine gland that plays a decisive role in the reproductive physiology of gilts. Recently, it has been suggested that exogenous factors may compromise the normal functioning of the CL. In the present study, we aimed to understand to what extent an acute and systemic challenge with lipopolysaccharide (LPS) on the day of estrus could compromise gene expression of gilts' CLs housed in different welfare conditions. For this, we housed 42 gilts in three different housing systems: crates, indoor group pens, and outdoor housing. Then, we challenged six females from each group with LPS and eight with saline (SAL) on the day of estrus. After slaughtering the gilts on the fifth day after the challenge, ovaries were collected for gene expression analysis by RT-qPCR. Housing system and LPS challenge did not have a significant interaction for any genes evaluated; thus, their effects were studied separately. We identified significant (p < 0.05) downregulation of the angiogenic genes VEGF and FTL1 among LPS-challenged animals. Meanwhile, we also observed upregulation of HSD3B1 gene among LPS-challenged animals. We found that STAR and LHCGR genes were differentially expressed depending on the housing system, which indicates that the environment may affect adaptation capabilities. Our results indicate that an acute health challenge on the estrus day alters CL gene expression; however, the role of the housing system remains uncertain.  aAngiogenesis  aAnimal development  aGilts  aSwine  aMarra  aReprodução Animal  aAcute stress  aAngiogênese  aEstresse agudo  aExpressão gênica  aLPS  aMarrãs  aRT-qPCR1 aALVES, L.1 aOSOWSKI, G. V.1 aSABEI, L.1 aFERRAZ, P. A.1 aPUGLIESI, G.1 aMARQUES, M. G.1 aZANELLA, R.1 aZANELLA, A. J.  tGenesgv. 13, n. 5, p. 1-13, 2022.