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Balıklar Neden Donmuyorlar?

Sıcaklık sıfırın altına indiğinde suyun donduğu gerçeğini hepimiz biliriz. Tüm organizmalarda da tıpkı vücudumuzda olduğu gibi belirli bir oranda su bulunur. Peki, soğuk ortamlarda yaşayan canlılar neden donmazlar? Spesifik olarak soracak olursak Antarktika gibi buzullarla kaplı sularda balıklar nasıl yaşarlar? Bu yazımda sizlere antifriz proteinler (AFP’ler) hakkında bilgiler vererek özellikle balıkların soğuk ortamlara adaptasyonuna ışık […]

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Reactive Oxygen Species and Lipid Peroxidation

Reactive oxygen species (ROS) are highly reactive compounds, which is making them very dangerous in certain situations. They are mostly formed from O2 molecules in the mitochondrial electron transport chain1. When O2 molecules become reactive species, such as hydrogen peroxide (H2O2) or superoxide (O2–), they might be counted as stable compounds. Unfortunately, they might become

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ALZHEIMER’S DISEASE AND MICROGLIAL ACTIVATION

 Alzheimer’s disease (AD) is one of the most encountered irreversible neurogenerative diseases 1. However its complicated pathogenicity is not well-understood, amyloid-beta (Aβ) dysmetabolism, formation of extracellular Aβ deposits, presence of intracellular neurofibrillary tangles (NT), and neurodegeneration (ND) in the hippocampus and neocortex are involved in main processes in AD 2 3 4. Existence of the

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