Evidence map›Paper›PMID 41307029›Full record

ArticleMolecular vision2024

Macular white dot lesions with hyperreflective optical coherence tomography findings in cynomolgus and rhesus monkeys.

Tomoaki Araki, Masamitsu Shimazawa, Shinsuke Nakamura, Wataru Otsu, Yosuke Numata, Megumi Sakata, Koji Kabayama, Hideshi Tsusaki, Hideaki Hara

Abstract read
In one paragraph

Article in Molecular vision, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Tomoaki ArakiShin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan.
Masamitsu ShimazawaMolecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
Shinsuke NakamuraMolecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
Wataru OtsuBiomedical Research, Gifu Pharmaceutical University, Gifu, Japan.
Yosuke NumataShin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan.
Megumi SakataShin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan.
Koji KabayamaShin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan.
Hideshi TsusakiShin Nippon Biomedical Laboratories Ltd. Drug Safety Research Laboratories (SNBL DSR), Kagoshima, Japan.
Hideaki HaraMolecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: We screened 28 female cynomolgus monkeys (CMs) and 25 female rhesus monkeys (RMs) for white dots (WDs) in the macula and detected several animals with WDs in colonies at the Shin Nippon Biomedical Laboratories, Ltd., Drug Safety Research Laboratories (SNBL) facility. To determine the functional and morphological characteristics of WDs, we conducted ophthalmological and pathological examinations on these animals. Methods: Fundus examination, optical coherence tomography (OCT), and focal electroretinogram (f-ERG) were conducted for all animals. Histopathology and transmission electron microscopy were conducted for one representative adult CM with WDs. Results: In both CMs and RMs, individual differences were observed in the number of WDs in the macula (ranging from approximately 10 to 500 per eye). Hyperreflective granules were observed between the ellipsoid zone (EZ) and the retinal pigment epithelium (RPE) in OCT. Both CMs and RMs exhibited a significant increase in the thicknesses of the RPE and choroid in WD animals compared to their normal counterparts. In the f-ERG, significant decreases and/or tendencies toward decreases in amplitudes and increases in implicit times of both a- and b-waves were observed in animals with WDs. In pathology, diffuse vacuolization of the RPE cells with tiny granules was observed in the macula. Conclusions: Based on the results of OCT and pathological examinations, it was suggested that animals with WDs can develop macular degeneration in the future. To assess their suitability as a model for precursor lesions of age-related macular degeneration, it is imperative to continue monitoring the animals used in the present study until they reach a more advanced age of approximately another 5-10 years.

Indexed as

Macula LuteaMacular DegenerationTomography, Optical CoherenceAnimalsElectroretinographyFemaleMacaca fascicularisMacaca mulattaRetinal Pigment Epithelium

Identifiers

PMID41307029
PMCPMC12645065

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.