d-Aspartic acid (d-Asp), an endogenous amino acid present in vertebrates and
invertebrates, plays an important role in the neuroendocrine system, as well as in the …

Investigations on the occurrence and biochemical roles of free D‐amino acids and D‐amino
acid‐containing peptides and proteins in living systems have increased in frequency and …

Using two specific and sensitive fluorometric/HPLC methods and a GC‐MS method, alone
and in combination with D‐aspartate oxidase, we have demonstrated for the first time that N …

d-Aspartate increases human chorionic gonadotropin-induced testosterone production in
purified rat Leydig cells. l-Aspartate, d-, l-glutamate or d-, l-asparagine could not substitute …

Abstract d-Aspartate (d-Asp) is an endogenous amino acid in the central nervous and
reproductive systems of vertebrates and invertebrates. High concentrations of d-Asp are …

In this study, using an enzymatic HPLC method in combination with d-aspartate oxidase, we
show that N-methyl-d-aspartate (NMDA) is present at nanomolar levels in rat nervous …

This study was conducted to investigate the effect of d-Aspartic acid (D-Asp) on post-thawed
sperm quality, fertility and hatchability outcomes in male broiler breeders. Twenty 55-week …

Free d-aspartate (d-Asp) occurs in substantial amounts in glandular tissues. This paper
reviews the existing work on d-Asp in vertebrate exocrine and endocrine glands, with …

OBJECTIVE: To determine D-aspartic acid (D-Asp) in human seminal plasma and
spermatozoa in fertile and infertile donors. DESIGN: Prospective observation study …

Background: D-Aspartic acid (D-Asp) is in invertebrate and vertebrate neuroendocrine
tissues, where it carries out important physiological functions. Recently, it has been reported …