Visuo-spatial learning and memory deficits in C57BL/6 mice following postnatal ethanol exposure
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Dosyalar
Tarih
2025
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Group LLC Philadelphia
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Background: Postnatal alcohol exposure impairs the development of the central nervous system, including the visual system. The behavioral consequences of such exposure on visual function remain poorly understood. Objectives: In this study, we investigated the effects of postnatal ethanol exposure on visuospatial learning and memory in C57BL/6 mice. Methods: Ethanol (3.0 g/kg) was administered via intubation on postnatal days 3–20. Controls received intubation only or no intervention. Pups were assigned to alcohol-treated (A, n = 11), intubation control (IC, n = 11), or non-intubated control (C, n = 9) groups. At three months, mice underwent the Novel Object Recognition (NOR) test and a visual water task. The NOR test measured recognition memory and exploratory behavior. The visual water task assessed visual acuity using sinusoidal gratings presented on monitors. Mice were trained over 17 days to associate a grating with a hidden platform, and visual acuity thresholds were determined based on performance at varying spatial frequencies. Results: Alcohol-exposed mice showed significant deficits in recognition memory and visual acuity. No group differences in body weight were observed. However, alcohol-treated mice displayed reduced exploration of novel objects (p =.0085, R2 = 0.29) and lower visual acuity thresholds at higher spatial frequencies (p =.048, R2 = 0.24). Conclusion: These findings demonstrate that early postnatal alcohol exposure can lead to lasting impairments in visual-cognitive functions. Given their similarity to deficits seen in children with Fetal Alcohol Spectrum Disorders (FASD), our results suggest the importance of early behavioral and visual assessments in children with suspected prenatal or early postnatal alcohol exposure.
Açıklama
CODEN : AJDAB
Anahtar Kelimeler
C57BL/6 mice, novel object recognition, Postnatal alcohol exposure, visual acuity task, visual discrimination task
Kaynak
The American Journal of Drug and Alcohol Abuse
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
Sayı
Künye
Dursun, I., & Elibol, B. (2025). Visuo-spatial learning and memory deficits in C57BL/6 mice following postnatal ethanol exposure. The American Journal of Drug and Alcohol Abuse, 1-11. 10.1080/00952990.2025.2526114
