CURRENT AFFAIRS

Detailed explanation-1: -Whereas, humans cannot efficiently regenerate their heart after injury, the teleost zebrafish have the capability to repair a “broken” heart. The zebrafish is probably one of the most important models for developmental and regenerative biology of the heart.

Detailed explanation-2: -The Mexican tetra fish can repair its heart after damage - something researchers have been striving to achieve in humans for years. Now, new research funded by the British Heart Foundation (BHF) published in Cell Reports suggests that a gene called lrrc10 may hold the key to this fish’s remarkable ability.

Detailed explanation-3: -They demonstrated that zebrafish is able to regenerate its heart after amputation of up to  20% of its ventricle. The injury leads to the formation of an initial fibrin clot that remains 7–9 days post-injury (dpi); this fibrin clot is replaced by new cardiomyocytes in the following weeks.

Detailed explanation-4: -After a heart attack, cardiac muscle cells die because they are deprived of blood and oxygen. In an adult human, those cells represent a dead end. They can’t change their minds about what kind of cell they’ve become. In newborn babies, as well as in adult fish, the heart can regenerate after injury.

Detailed explanation-5: -The axolotl (say “ax-oh-lot-el") is a Mexican species of salamander. It’s also known as a Mexican walking fish. It can regenerate, repair or replace its arms, legs, tail, lower jaw, brain and heart.