Abstract
D-aspartate (D-Asp) is an amino acid found in high concentrations in the testis and pituitary gland. Increasing evidence suggests that D-Asp promotes spermatogenesis by activating testosterone production in the Leydig cells via LH release from the pituitary gland. In vitro studies indicate that D-Asp may also influence steroidogenesis and spermatogenesis through autocrine and paracrine signals. D-Asp enhances StAR and steroidogenic enzyme expressions, facilitating testicular cell proliferation via the GluR/ERK1/2 pathway. Moreover, it supports spermatogenesis by enhancing the mitochondrial function in spermatocytes, aiding in the metabolic shift during meiosis. Enhanced mitochondrial function, along with improved MAM stability and reduced ER stress, has been observed in Leydig and Sertoli cells treated with D-Asp, indicating potential benefits in steroidogenesis and spermatogenesis efficiency. Conversely, D-Asp exerts a notable anti-apoptotic effect in the testis via the AMPAR/AKT pathway, potentially mediated by antioxidant enzyme modulation to mitigate testicular oxidative stress. This review lays the groundwork for future investigations into the molecules promoting spermatogenesis by stimulating endogenous testosterone biosynthesis, with D-amino acids emerging as promising candidates.
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MDPI and ACS Style
Falvo, S.; Santillo, A.; Di Fiore, M.M.; Venditti, M.; Grillo, G.; Latino, D.; Baccari, I.; Petito, G.; Chieffi Baccari, G.
New Insights into D-Aspartate Signaling in Testicular Activity. Cells 2024, 13, 1400.
https://doi.org/10.3390/cells13161400
AMA Style
Falvo S, Santillo A, Di Fiore MM, Venditti M, Grillo G, Latino D, Baccari I, Petito G, Chieffi Baccari G.
New Insights into D-Aspartate Signaling in Testicular Activity. Cells. 2024; 13(16):1400.
https://doi.org/10.3390/cells13161400
Chicago/Turabian Style
Falvo, Sara, Alessandra Santillo, Maria Maddalena Di Fiore, Massimo Venditti, Giulia Grillo, Debora Latino, Isabella Baccari, Giuseppe Petito, and Gabriella Chieffi Baccari.
2024. "New Insights into D-Aspartate Signaling in Testicular Activity" Cells 13, no. 16: 1400.
https://doi.org/10.3390/cells13161400
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