Category: Health security in a nutshell
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How and why does the hippocampus decline? Some facts
by Marta Koblańska, 16.07.2025, 16:30 Polish time Photo: Brain, Thanks to geralt, Pixabay Alzheimer’s disease, the most common neurodegenerative disorder globally, is often linked to atrophy of the hippocampus. However, a new study conducted by scientists at ShanghaiTech University has revealed that this decline may also be a result of the disease’s progression. Their findings…
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Rzeczywiste i iluzoryczne kontrowersje wokół ciąży
Zdjęcie: Zapłodnienie. Licencja TBIT, Pixabay Im cięższa jest wada genetyczna zarodka i późniejszego płodu, tym szybciej jest on eliminowany z organizmu kobiety. Lżejsze wady z reguły pozwalają na donoszenie ciąży, choć nie oznacza to, że dziecko przeżyje po urodzeniu – mówią eksperci z zakresu ginekologii i położnictwa oraz neonatologii. Organizm ludzki powstaje stopniowo, po połączeniu…
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Why are genes less similar better for studying diseases?
Photo: Baboon, Clker-Free-Vector-Images, Pixabay Baboons show greater resilience to diseases despite their diverse genome, whereas humans, with a singular set of chromosomes, exhibit increased susceptibility – according to a new study published in ,,Cell Genomics”. Genetic variations differ in humans as a whole body or within the body in certain tissues. Genetic variation, simplifying, is the number of chromosomal…
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What influences cognition? The exchange in purine bases and amino acids in the brain.
Photo: Adenine structure, one of the purine bases, specifically connects to thymine via hydrogen bonding in DNA and uracyl in RNA, as discovered by James Watson and Francis Crick in the 50s. Credit:kropekk_pl Of the about 20,000 metabolites discovered so far in human blood serum, over 1,300 and 140 lipids have been observed to profile the brain’s uptake and…
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When and why might the genetic code change? Groundbreaking research addresses these questions.
Photo: Evolved macroscopic “snowflake” yeast from the MuLTEE experiment. The large size of the nuclei (yellow) and cells (cyan) are results of whole-genome duplication and aneuploidy. Credit: Georgia Institute of Technology The specific chromosomal configurations and changes in their numbers may persist or disappear depending on population size and environmental conditions. Can we live outside…