Which organism is responsible for causing acute glomerular nephritis?

Acute glomerular nephritis is often associated with an immune response following infection with certain bacteria, particularly Group A beta-hemolytic streptococcus. This organism is known to cause pharyngitis (strep throat) and, as a complication of that infection, can lead to acute glomerulonephritis due to the formation of immune complexes. These complexes can deposit in the glomeruli of the kidneys, triggering inflammation and impairing kidney function.

The clinical significance of this connection highlights the importance of treating Group A beta-hemolytic streptococcal infections promptly to prevent subsequent complications, such as nephritis. Understanding this association is crucial for both diagnosis and management of patients presenting with signs of kidney dysfunction following a streptococcal infection.