PMID- 17658593 OWN - NLM STAT- MEDLINE DCOM- 20071107 LR - 20191210 IS - 0093-691X (Print) IS - 0093-691X (Linking) VI - 68 IP - 5 DP - 2007 Sep 15 TI - Intrafollicular amino acid concentration and the effect of amino acids in a defined maturation medium on porcine oocyte maturation, fertilization, and preimplantation development. PG - 728-35 AB - The objective of this study was to determine the intrafollicular concentrations of free amino acids in pigs and to examine the effect of amino acids in a chemically defined maturation medium on oocyte maturation, in vitro fertilization (IVF), and embryo development in vitro. Pooled follicular fluid aspirated separately from small (<3mm in diameter), medium (3-8mm), and large follicles (>8mm) in three pairs of ovaries was analyzed for amino acid concentration. In addition, oocyte maturation, fertilization, and embryo development were examined after in vitro maturation (IVM) of oocytes in a defined maturation medium supplemented individually with glutamate (GLU), glutamine (GLN), glycine (GLY), aspartate (ASP), asparagine (ASN), arginine (ARG), alanine (ALA), leucine (LEU), lysine (LYS), proline (PRO), and valine (VAL). Irrespective of follicle size, GLY, GLU, ALA, GLN, and PRO were the most abundant amino acids in pig follicular fluid (pFF). Sperm penetration was not altered by amino acid treatment during IVM, but monospermic fertilization was increased (P<0.05) by GLN, ASP, and VAL. All amino acids except ASP and ASN stimulated (P<0.05) male pronuclear formation after IVF. ARG and ALA treatment during IVM improved (P<0.05) blastocyst formation. In conclusion, GLY, GLU, ALA, GLN, and PRO were the most abundant amino acids in pFF and amino acids in a defined medium improved porcine monospermic fertilization, male pronuclear formation, and preimplantation development. FAU - Hong, J AU - Hong J AD - School of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chunchon, Republic of Korea. FAU - Lee, E AU - Lee E LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070720 PL - United States TA - Theriogenology JT - Theriogenology JID - 0421510 RN - 0 (Amino Acids) RN - 0 (Culture Media) SB - IM MH - Amino Acids/*analysis/*pharmacology MH - Animals MH - Cell Size MH - Culture Media/*pharmacology MH - Embryo Culture Techniques MH - Embryonic Development/*drug effects MH - Female MH - Fertilization/*drug effects MH - Follicular Fluid/*chemistry MH - Male MH - Oocytes/cytology/*drug effects/metabolism MH - Oogenesis/drug effects MH - Ovarian Follicle/drug effects MH - Swine/*embryology EDAT- 2007/07/31 09:00 MHDA- 2007/11/08 09:00 CRDT- 2007/07/31 09:00 PHST- 2007/04/02 00:00 [received] PHST- 2007/06/08 00:00 [accepted] PHST- 2007/07/31 09:00 [pubmed] PHST- 2007/11/08 09:00 [medline] PHST- 2007/07/31 09:00 [entrez] AID - S0093-691X(07)00328-7 [pii] AID - 10.1016/j.theriogenology.2007.06.002 [doi] PST - ppublish SO - Theriogenology. 2007 Sep 15;68(5):728-35. doi: 10.1016/j.theriogenology.2007.06.002. Epub 2007 Jul 20.