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Astyanax mexicanus

ABSTRACT: Integrative genomic analysis reveals the gene contents, repeats landscapes and evolutionary dynamics of the B chromosomes in multiple species

PROVIDER: PRJNA606808 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11095917_1.fastq.gz	Fastqsanger.gz
	SRR11095917_2.fastq.gz	Fastqsanger.gz
	SRR11095918_1.fastq.gz	Fastqsanger.gz
	SRR11095918_2.fastq.gz	Fastqsanger.gz
	SRR11095919_1.fastq.gz	Fastqsanger.gz

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Astyanax mexicanus

Project description:Integrative genomic analysis reveals the gene contents, repeats landscapes and evolutionary dynamics of the B chromosomes in multiple species

| PRJNA606808 | ENA

Effects of aging on gene expression in multiple tissues in surface and cave Astyanax mexicanus

Project description:Dysregulation of sleep has widespread health consequences and represents an enormous health burden. Short-sleeping individuals are predisposed to the effects of neurodegeneration, suggesting a critical role for sleep in the maintenance of neuronal health. While the effects of sleep on cellular function are not completely understood, growing evidence has identified an association between sleep loss and DNA damage, raising the possibility that sleep facilitates efficient DNA repair. The Mexican tetra fish, Astyanax mexicanus provides a model to investigate the evolutionary basis for changes in sleep and the consequences of sleep loss. Multiple cave-adapted populations of these fish have evolved to sleep for substantially less time compared to surface populations of the same species without identifiable impacts on healthspan or longevity. To investigate whether the evolved sleep loss is associated with DNA damage and aging, we compared the transcriptional response to aging between surface and cave morphs of A. mexicanus

2024-10-13 | GSE272611 | GEO

Retinal morphology in Astyanax mexicanus during eye degeneration.

Project description:The teleost Astyanax mexicanus is one species extant in two readily available forms. One that lives in Mexican rivers and various convergent forms that live in nearby caves. These fish are born with eyes but in the cavefish, they degenerate during development. It is known that the lens of cavefish undergoes apoptosis and that some cells in the neuroretina also die. It has not been described, however, if glia and various components of the neuroretina form before complete eye degeneration. Here we examined the development of the retina of the closest living ancestor that lives in the rivers and two independently adapted of cavefish. We report that although the neuroretina is smaller and more compact, it has all cell types and layers including amacrine cells and Müller glia. While various makers for photoreceptors are present in the cavefish inner segments, the outer segments of the photoreceptors in cavefish are missing from the earliest stages examined. This shows that the machinery for visual transducing discs might still be present but not organized in one part of the cell. It is interesting to note that the deficiencies in Astyanax cavefish resemble retinal diseases, such as retinitis pigmentosa.

| S-EPMC7153992 | biostudies-literature

Effects of UV-B radiation on whole-body gene expression of surface and cave Astyanax mexicanus

Project description:Dysregulation of sleep has widespread health consequences and represents an enormous health burden. Short-sleeping individuals are predisposed to the effects of neurodegeneration, suggesting a critical role for sleep in the maintenance of neuronal health. While the effects of sleep on cellular function are not completely understood, growing evidence has identified an association between sleep loss and DNA damage, raising the possibility that sleep facilitates efficient DNA repair. The Mexican tetra fish, Astyanax mexicanus provides a model to investigate the evolutionary basis for changes in sleep and the consequences of sleep loss. Multiple cave-adapted populations of these fish have evolved to sleep for substantially less time compared to surface populations of the same species without identifiable impacts on healthspan or longevity. To investigate whether the evolved sleep loss is associated with DNA damage and cellular stress, we compared the DNA Damage Response (DDR) between A. mexicanus populations.

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Project description:Astyanax mexicanus RAD-tag sequencing

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Project description:Astyanax mexicanus Transcriptome or Gene expression