This week, Dr. Best will cover Alport syndrome and start the week off by discussing the history of this renal disease. #Nephpearls
In 1927, Dr. Cecil Alport published a series on “hereditary familial congenital haemorrhagic nephritis” where he described its association with deafness and the gender differences in disease severity. #DiseaseWeek
Interestingly, Dr. Alport initially believed the etiology of the disorder was an individual susceptibility to a toxin of an unknown organism, probably belonging to the streptococcal group. #DiseaseWeek
The pathogenesis of the disorder known as Alport syndrome remained unknown until the early 1970’s when advances in electron microscopy allowed the identification of characteristic abnormalities in GBMs. #DiseaseWeek
Dr. Curtis Atkin, who suffered from Alport syndrome himself, mapped for the first time the affected gene to the long arm of the X chromosome (Xq22) in 1988. #DiseaseWeek
Shortly after, investigators from U of Oulu and U of Pennsylvania discovered the COL4A5 gene and mapped it to the same region known to contain the locus for X-linked AS. #DiseaseWeek
Time for another #DiseaseWeek tweetorial. How do we classify lupus nephritis?
The International Society of Nephrology and RPS created an LN classification system consisting of 6 classes of disease based on morphologic findings on kidney biopsy. A simplified view is below. /1
The classes are based on the distribution of immune deposits and the proportions of glomeruli affected. This classification is VERY glomerulocentric. #DiseaseWeek /2
Here's an overview of the classification of lupus nephritis. #DiseaseWeek /3