An LC-MS/MS- and hURAT1 cell-based approach for screening of uricosuric agents

This article aims to critically review the evidence on the available therapeutic strategies for the treatment of hyperuricemia. For this reason, several papers were reviewed. Xanthine oxidase inhibitors are the safest and most effective uric acid lowering drugs for the management of chronic hyperuricemia, while the efficacy of uricosuric agents is strongly modulated by pharmacogenetics. Emergent drugs (lesinurad, peglotidase) were found to be more effective for the acute management of refractory hyperuricemia, but their use is supported by a relatively small number of clinical trials so that further well-designed clinical research is needed to deepen their efficacy and safety profile.

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URICOSURIC AGENTS

Screening Methods in Pharmacology ◽

10.1016/b978-1-4832-3266-9.50043-8 ◽

1965 ◽

pp. 262-263 ◽

Cited By ~ 5

Author(s):

ROBERT A. TURNER

Keyword(s):

Uricosuric Agents

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Omega-3 Polyunsaturated Fatty Acids Inhibit the Function of Human URAT1, a Renal Urate Re-Absorber

Nutrients ◽

10.3390/nu12061601 ◽

2020 ◽

Vol 12 (6) ◽

pp. 1601 ◽

Cited By ~ 1

Author(s):

Hiroki Saito ◽

Yu Toyoda ◽

Tappei Takada ◽

Hiroshi Hirata ◽

Ami Ota-Kontani ◽

...

Keyword(s):

Fatty Acids ◽

Human Health ◽

Serum Urate ◽

The Body ◽

Omega 3 ◽

Beneficial Effects ◽

Uricosuric Agents ◽

Transport Assay ◽

The Impact

The beneficial effects of fatty acids (FAs) on human health have attracted widespread interest. However, little is known about the impact of FAs on the handling of urate, the end-product of human purine metabolism, in the body. Increased serum urate levels occur in hyperuricemia, a disease that can lead to gout. In humans, urate filtered by the glomerulus of the kidney is majorly re-absorbed from primary urine into the blood via the urate transporter 1 (URAT1)-mediated pathway. URAT1 inhibition, thus, contributes to decreasing serum urate concentration by increasing net renal urate excretion. Here, we investigated the URAT1-inhibitory effects of 25 FAs that are commonly contained in foods or produced in the body. For this purpose, we conducted an in vitro transport assay using cells transiently expressing URAT1. Our results showed that unsaturated FAs, especially long-chain unsaturated FAs, inhibited URAT1 more strongly than saturated FAs. Among the tested unsaturated FAs, eicosapentaenoic acid, α-linolenic acid, and docosahexaenoic acid exhibited substantial URAT1-inhibitory activities, with half maximal inhibitory concentration values of 6.0, 14.2, and 15.2 μM, respectively. Although further studies are required to investigate whether the ω-3 polyunsaturated FAs can be employed as uricosuric agents, our findings further confirm FAs as nutritionally important substances influencing human health.

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