Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ metabolism and its roles in cellular processes during ageing. Nat Rev Mol Cell Biol. 2021.
Choi JE, Muchowski PJ. NAD therapeutics in neurodegenerative diseases. Neurotherapeutics. 2020.
Trammell SAJ, Schmidt MS, Weidemann BJ, Redpath P, Jaksch F, Dellinger RW, Li Z, Abel ED, Migaud ME, Brenner C. Nicotinamide riboside is uniquely and orally bioavailable in mice and humans. Nature Communications. 2016;7:12948. doi:10.1038/ncomms12948 Clinical Trials+14Nature+14Københavns Universitets Forskningsportal+14
Airhart SE, Shireman LM, Risler LJ, Anderson GD, Nagana Gowda GA, Raftery D, Tian R, Shen DD, O’Brien KD. An open‑label, non‑randomized study of the pharmacokinetics of the nutritional supplement nicotinamide riboside (NR) and its effects on blood NAD+ levels in healthy volunteers. PLoS ONE. 2017;12(12):e0186459. doi:10.1371/journal.pone.0186459 PMC+6PLOS+6ResearchGate+6
Dellinger RW, et al. Repeat dose NRPT increases NAD+ in humans safely. npj Aging and Mechanisms of Disease. 2017. (This corresponds to "Dellinger et al., 2017" in your list.)
Martens CR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+. Nature Communications. 2018. (Corresponds to “Martens et al., 2018.”)