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Study identifies heart block cause in athletes


The study, published in the leading journal 
Circulation Research, found that long-term training in both horses and mice caused a reduction in key proteins, known as ion channels, that control AV node conduction.
The expression and activity of the ion channels were then investigated in detail in mice that followed a program which modelled long-term exercise training to build their fitness.
The mice were used to explore mechanisms underlying heart block in detail using approaches that would not be possible in racehorses.
Training-induced heart block and underlying ion channel changes were reversible when the exercise was stopped or when mice were given a compound known as an anti-microRNA. ....

United Kingdom , Alicia Dsouza , Pietro Mesirca , Rikke Buhl , Institute Of Functional Genomics In Montpellier , University Of Copenhagen , British Heart Foundation Intermediate , University Of Manchester , Circulation Research , British Heart Foundation Intermediate Fellow , Functional Genomics , Professor Rikke Buhl , ஒன்றுபட்டது கிஂக்டம் , அலிசியா ட்சொஜா , பல்கலைக்கழகம் ஆஃப் கோபெந்ஹேகந் , பிரிட்டிஷ் இதயம் அடித்தளம் இடைநிலை , பல்கலைக்கழகம் ஆஃப் மான்செஸ்டர் , சுழற்சி ஆராய்ச்சி , பிரிட்டிஷ் இதயம் அடித்தளம் இடைநிலை சக , செயல்பாட்டு மரபியல் ,