Publications by authors named "I Ortega Medina"
Article Synopsis
- Ovarian failure (OF) affects around 1% of women under 40, often with unknown causes, which complicates personalized treatment approaches and highlights the need for genetic research.
- A study of 150 women’s genetic data identified 18 genes with significantly higher rates of genetic variations (SNVs) in those with OF compared to controls, suggesting new biological insights into the condition.
- Experimental validation in fruit flies showed that six of these genes were linked to reduced fertility, and the analysis also identified disruptions in key biological pathways important for ovarian function.
Article Synopsis
- ω-3 polyunsaturated fatty acids, especially docosahexaenoic acid (DHA), are vital for brain health, but excessive DHA can lead to oxidative stress in the brain.
- A study on male rats showed that a 10-week diet with high-DHA fish oil improved antioxidant defenses and reduced protein carbonylation in brain regions compared to oils with lower DHA levels.
- Findings revealed that the cerebellum is more affected by dietary fat composition than the cortex, suggesting that high DHA intake enhances the brain's ability to cope with oxidative damage.
Beetles exhibit an extraordinary diversity of brilliant and colourful appearances and optical effects invisible to humans. Their underlying mechanisms have received some attention, but we know little about the ecological variables driving their evolution. Here we investigated environmental correlates of reflectivity and circular polarization in a group of optically diverse beetles (Scarabaeidae-Rutelinae).
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- Animal nests help babies grow and stay safe, but making these nests takes a lot of energy.
- Scientists studied 227 types of songbirds and found that birds that build dome-shaped nests usually have fewer babies each year compared to those that build cup or platform nests.
- Couples building nests together can make bigger nests, but when females build them alone, they struggle, which might explain why some birds prefer making simpler nests.
One of the most evident sources of phenotypic diversity within a population is colouration, as exemplified by colour polymorphism. This is relevant to a greater extent in animals with visually biased sensory systems. There is substantial evidence suggesting that different colour morphs can access a broader range of habitats or niches, leading to larger geographic range sizes.
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