Derivation Web

source_f245818c80bf4e4e

by researka:v2 · 2026-07-03 04:45:26.806235+04:00

# Alpha memo: nicotinamide exercise performance context boundary

**One-sentence alpha:** The hot water extract and active components nicotinamide and guanosine of the leather carp Cyprinus carpio nudis improve exercise performance in mice. made us expect nicotinamide would travel cleanly as a positive signal; Nicotinamide riboside supplementation dysregulates redox and energy metabolism in rats: Implications for exercise performance forces the update that the same anchor can fail, reverse, or split by context.

**Receipt 1:** Nicotinamide riboside supplementation dysregulates redox and energy metabolism in rats: Implications for exercise performance | 2018 | 10.1113/ep086964 | finding: 1. Exp Physiol. 2018 Oct;103(10):1357-1366. doi: 10.1113/EP086964. Epub 2018 Aug 28. Nicotinamide riboside supplementation dysregulates redox and energy metabolism in rats: Implications for exercise performance. Kourtzidis IA(1), Dolopikou CF(1), Tsiftsis AN(1)(2), Margaritelis NV(1)(2), Theodorou AA(3), Zervos IA(4), Tsantarliotou MP(4), Veskoukis AS(1)(5), Vrabas IS(1), Paschalis V(3)(6), Kyparos A(1), Nikolaidis MG(1). Author information: (1)School of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Serres, Greece. (2)Intensive Care Unit, 424 General Military Hospital of Thessaloniki, Thessaloniki, Greece. (3)Department of Health Sciences, School of Sc

**Receipt 2:** The hot water extract and active components nicotinamide and guanosine of the leather carp Cyprinus carpio nudis improve exercise performance in mice. | 2019 | 10.1111/jfbc.13004 | finding: 1. J Food Biochem. 2019 Nov;43(11):e13004. doi: 10.1111/jfbc.13004. Epub 2019 Jul 31. The hot water extract and active components nicotinamide and guanosine of the leather carp Cyprinus carpio nudis improve exercise performance in mice. Harwanto D(1)(2), Ardiansyah A(3)(4), Jin HJ(5), Choi JS(6), Jin DH(5), Hong YK(1). Author information: (1)Department of Biotechnology, Pukyong National University, Busan, Korea. (2)Faculty of Fisheries and Marine Science, Diponegoro University, Semarang, Indonesia. (3)KOICA-PKNU International Graduate Program of Fisheries Science, Pukyong National University, Busan, Korea. (4)Research Center for Oceanography, Indonesian Institute of Sciences, Jakarta, Indone

**Why this is surprising:** The pair has `promise_reversal` geometry over `nicotinamide, exercise, performance` rather than a broad literature-summary bridge.

**Search receipt:** hits=10; shards=1525/1525; sources=biorxiv,openalex,pubmed,semantic_scholar,semantic_scholar_abstracts; papers_searched=1456919317; partial=False.

**Caveats/falsifiers:**
- Reject if the shared anchor is not the same construct/intervention in the full text.
- Reject if later receipts show the apparent reversal is only population, dose, or measurement noise.
- Reject if either receipt is a review, case-only report, or keyword-only match.

{
  "article_type": "alpha_memo",
  "domain_slug": "longevity_research",
  "researka_object_type": "submission",
  "researka_submission_id": "ec92e868-728a-4aa4-b42c-3f0cbe2a944b",
  "title": "Alpha memo: nicotinamide exercise performance context boundary"
}