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Printable Handouts
Navigable Slide Index
- Introduction
- Agenda - definition
- Definition and main characteristics
- Different histological aspects
- Typical IgA deposition
- Agenda - epidemiology
- Epidemiology
- Geographical variations in the prevalence of IgAN
- Genetic risk map of IgAN
- Agenda - pathophysiology
- Pathophysiology (four hits theory)
- Genetics of IgA nephropathy
- Pathways implicated by genetic studies
- Common genetic determinants for IgAN
- Pathogenetic processes & known genetic factors
- Hit 1
- Defect in the regulation of IgA1
- Normal IgA1 molecule
- IgA1 abnormal glycosylation in IgAN
- Degalactosylated serum IgA1 in IgAN
- IgA1 aberrant glycosylation in patients & relatives
- Hit 1: Consideration I
- Hit 1: Consideration II
- Open questions for hit 1
- Hit 2
- Antibody production towards the abnormal IgA1
- IgA1 abnormal glycosylation in IgAN
- Anti IgA1 autoantibodies & development of IgAN
- The two-hit hypothesis for IgA-IC formation in IgAN
- IgAN: defective IgA1 to glomerular deposition
- Pathogenesis of IgAN: kidney deposition
- Open questions concerning hit 2
- Hit 3
- Two hypotheses for hit 3
- Immune complexes pathogenicity
- Complement
- IgA receptors
- Role of receptors
- Hypothesis for a role of CD89
- Hit 4
- Renal damage in IgAN
- Inducer factors in mesangial damage
- Podocyte injury
- Tubulointerstitial scarring
- Pathways to renal damage in IgAN
- Thank you
Topics Covered
- Characteristics of IgA nephropathy
- Epidemiological distribution of IgA nephropathy
- Pathophysiology and genetics
- The four hit theory
- Role of other factors and receptors in renal damage
Links
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Talk Citation
Salvadori, M. (2016, August 31). What’s new for IgA nephropathy part 1: epidemiology and pathogenesis [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved November 23, 2024, from https://doi.org/10.69645/XTSV9000.Export Citation (RIS)
Publication History
Financial Disclosures
- Prof. Maurizio Salvadori has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
What’s new for IgA nephropathy part 1: epidemiology and pathogenesis
Published on August 31, 2016
23 min
Other Talks in the Series: The Kidney in Health and Disease
Transcript
Please wait while the transcript is being prepared...
0:00
Hi, I'm Professor Salvadori
from the University of Florence.
In this first part of my talks
on IgA nephropathy,
I will brief you about
its epidemiology
and physiopathology.
0:19
Let me show you
the agenda of the day.
And let me start
with the definition
and the main characteristics
of this disease.
0:35
IgA nephropathy
represents the most frequent
glomerulonephritis.
The typical histological sign
is a proliferation
of glomerular mesangial cells
with different aspects
on light microscopy,
that we'll see later.
The hallmark is the deposition
of IgA and complement
mainly in the mesangial area.
And finally,
the disease is characterized
by extremely different
clinical signs.
1:15
Here, you may have a look
of the different aspects
on light microscopy.
Accordingly,
you'll understand easily
that light microscopy
is not useful
for a right diagnosis.
1:33
Here you see,
on the right-hand side
of the slide,
the hallmark of the disease
that is the deposition of IgA
as may be observed
looking at immunofluorescence.