PMID- 25053052 OWN - NLM STAT- MEDLINE DCOM- 20151202 LR - 20200812 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 166 DP - 2015 Jan 1 TI - IgE binding to peanut allergens is inhibited by combined D-aspartic and D-glutamic acids. PG - 248-253 LID - S0308-8146(14)00890-5 [pii] LID - 10.1016/j.foodchem.2014.06.004 [doi] AB - The objective of this study was to determine if D-amino acids (D-aas) bind and inhibit immunoglobulin E (IgE) binding to peanut allergens. D-aas such as D-Asp (aspartic acid), D-Glu (glutamic acid), combined D-[Asp/Glu] and others were each prepared in a cocktail of 9 other D-aas, along with L-amino acids (L-aas) and controls. Each sample was mixed with a pooled plasma from peanut-allergic donors, and tested by ELISA (enzyme-linked immunosorbent assay) and Western blots for IgE binding to peanut allergens. Results showed that D-[Asp/Glu] (4 mg/ml) inhibited IgE binding (75%) while D-Glu, D-Asp and other D-aas had no inhibitory effect. A higher inhibition was seen with D-[Asp/Glu] than with L-[Asp/Glu]. We concluded that IgE was specific for D-[Asp/Glu], not D-Asp or D-Glu, and that D-[Asp/Glu] was more reactive than was L-[Asp/Glu] in IgE inhibition. The finding indicates that D-[Asp/Glu] may have the potential for removing IgE or reducing IgE binding to peanut allergens in vitro. CI - Published by Elsevier Ltd. FAU - Chung, Si-Yin AU - Chung SY AD - United States Department of Agriculture, Agricultural Research Services, Southern Regional Research Center, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA. Electronic address: siyin.chung@ars.usda.gov. FAU - Reed, Shawndrika AU - Reed S AD - United States Department of Agriculture, Agricultural Research Services, Southern Regional Research Center, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA. LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20140611 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Allergens) RN - 0 (Glutamates) RN - 30KYC7MIAI (Aspartic Acid) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens/*immunology MH - Arachis/chemistry/*immunology MH - Aspartic Acid/*chemistry MH - Enzyme-Linked Immunosorbent Assay MH - Glutamates/*chemistry MH - Immunoglobulin E/*immunology OTO - NOTNLM OT - Ara h 1 and Ara h 2 OT - IgE antibodies OT - Peanut allergens OT - d-Amino acids OT - d-Aspartic acid OT - d-Glutamic acid EDAT- 2014/07/24 06:00 MHDA- 2015/12/15 06:00 CRDT- 2014/07/24 06:00 PHST- 2013/12/25 00:00 [received] PHST- 2014/05/05 00:00 [revised] PHST- 2014/06/03 00:00 [accepted] PHST- 2014/07/24 06:00 [entrez] PHST- 2014/07/24 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - S0308-8146(14)00890-5 [pii] AID - 10.1016/j.foodchem.2014.06.004 [doi] PST - ppublish SO - Food Chem. 2015 Jan 1;166:248-253. doi: 10.1016/j.foodchem.2014.06.004. Epub 2014 Jun 11.