PMID- 19032437 OWN - NLM STAT- MEDLINE DCOM- 20110804 LR - 20181201 IS - 1439-0531 (Electronic) IS - 0936-6768 (Linking) VI - 44 IP - 5 DP - 2009 Oct TI - Uterine expression of epidermal growth factor family during the course of pregnancy in pigs. PG - 797-804 LID - 10.1111/j.1439-0531.2008.01082.x [doi] AB - To stably maintain pregnancy, several genes are expressed in the uterus. In particular, the endometrial expression of genes encoding growth factors appears to play a key role in maternal-foetal communication. The previous studies characterized the endometrial expression kinetics of the genes encoding epidermal growth factor (EGF), its receptor (EGFR), transforming growth factor-alpha (TGF-alpha), amphiregulin (Areg), heparin-binding (Hb) EGF and calbindin-D9k (CaBP-9k) in pigs during implantation. Here, we further characterized the expression patterns of these molecules during the entire porcine pregnancy. Porcine uteri were collected at pregnancy days (PD) 12, 15, 30, 60, 90 and 110 and subjected to RT-PCR. EGF and EGFR showed similar expression patterns, being highly expressed around implantation and then disappearing. TGF-alpha and Areg expression levels rose steadily until they peaked at PD30, after which they gradually decreased to PD12 levels. This Areg mRNA expression pattern was confirmed by real-time PCR and similar Areg protein expression patterns were observed. Immunohistochemical analysis of PD60 uteri revealed Areg in the glandular and luminal epithelial cells. Hb EGF was steadily expressed throughout the entire pregnancy, while CaBP-9k was expressed strongly on PD12, and then declined sharply on PD15 before recovering slightly for the remainder of the pregnancy. Thus, the EGF family may play a key role during implantation in pigs. In addition, CaBP-9k may help to maintain uterine quiescence during pregnancy by sequestering cytoplasmic Ca(2+). FAU - Kim, Y-J AU - Kim YJ AD - Laboratory of Veterinary Biochemistry and Molecular Biology, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea. FAU - Lee, G-S AU - Lee GS FAU - Hyun, S-H AU - Hyun SH FAU - Ka, H-H AU - Ka HH FAU - Choi, K-C AU - Choi KC FAU - Lee, C-K AU - Lee CK FAU - Jeung, E-B AU - Jeung EB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081113 PL - Germany TA - Reprod Domest Anim JT - Reproduction in domestic animals = Zuchthygiene JID - 9015668 RN - 0 (Amphiregulin) RN - 0 (Calbindins) RN - 0 (Glycoproteins) RN - 0 (Heparin-binding EGF-like Growth Factor) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (RNA, Messenger) RN - 0 (S100 Calcium Binding Protein G) RN - 0 (Transforming Growth Factor alpha) RN - 62229-50-9 (Epidermal Growth Factor) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Amphiregulin MH - Animals MH - Calbindins MH - Embryo Implantation/physiology MH - Endometrium/*chemistry MH - Epidermal Growth Factor/*genetics MH - ErbB Receptors/genetics MH - Female MH - *Gene Expression MH - Gestational Age MH - Glycoproteins/analysis/genetics MH - Heparin-binding EGF-like Growth Factor MH - Intercellular Signaling Peptides and Proteins/analysis/genetics MH - Polymerase Chain Reaction/veterinary MH - Pregnancy MH - RNA, Messenger/analysis MH - S100 Calcium Binding Protein G/genetics MH - *Swine MH - Transforming Growth Factor alpha/genetics EDAT- 2008/11/27 09:00 MHDA- 2011/08/05 06:00 CRDT- 2008/11/27 09:00 PHST- 2008/11/27 09:00 [pubmed] PHST- 2011/08/05 06:00 [medline] PHST- 2008/11/27 09:00 [entrez] AID - RDA1082 [pii] AID - 10.1111/j.1439-0531.2008.01082.x [doi] PST - ppublish SO - Reprod Domest Anim. 2009 Oct;44(5):797-804. doi: 10.1111/j.1439-0531.2008.01082.x. Epub 2008 Nov 13.