American track star Jesse Owens became the hero of the 1936 Olympic Games in Berlin, Germany, as his series of victories scored a moral victory for African American athletes.
HGPS is caused by a mutation in the gene called LMNA (pronounced âlamin-aâ). The LMNA gene produces the lamin A protein which is the structural scaffolding that holds the nucleus of a cell together. The abnormal lamin A protein that causes Progeria is called progerin. Progerin makes the nucleus unstable. That cellular instability leads to the process of premature aging and disease in Progeria. Progeria Cell Nucleus. PRF was the driving force behind finding the gene responsible for Progeria.
What is delayed puberty? Delayed puberty is when a teen goes through these body changes later than the usual age range. For girls, it means no breast development by age 13 or no menstrual periods by age 16. For boys, it means no enlargement of the testicles by age 14. What causes delayed puberty? Some teens are âlate bloomersâ who just happen to start puberty later than most children their age. Being a late bloomer is the most common cause of delayed puberty. Itâs not caused by a medical problem and usually doesnât need treatment. Late bloomers will eventually start puberty on their own and catch up to their friends. Other causes for delayed puberty may be due to Kallmann Syndrome.