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2018 ; 19
(1
): 62
Nephropedia Template TP
gab.com Text
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English Wikipedia
A cross-sectional study on the relationship between hematological data and
quantitative morphological indices from kidney biopsies in different glomerular
diseases
#MMPMID29540159
Nigro M
; Viggiano D
; Ragone V
; Trabace T
; di Palma A
; Rossini M
; Capasso G
; Gesualdo L
; Gigliotti G
BMC Nephrol
2018[Mar]; 19
(1
): 62
PMID29540159
show ga
BACKGROUND: The classical approach to the analysis of kidney biopsies is based on
semi-quantitative scores of the amount of sclerosis, inflammatory infiltrate,
fibrosis and vascular damage. However, advanced renal lesions may be accompanied
by a paucity of clinical features and, conversely, important clinical
abnormalities may be accompanied by minimal histopathological changes. The
objective of this study is to correlate new, semiautomatic, quantitative features
of kidney biopsies (e.g. fractal analysis) with clinical and hematological
parameters using a cross-sectional design. METHODS: Whole slide images from
sixty-seven biopsies of patients diagnosed for diabetic nephropathy, hypertensive
nephropathy, focal segmental glomerulosclerosis (FSGS) or IgA nephropathy have
been used. The images have been semi-automatically quantified in the ImageJ
environment, in order to derive the glomerular density, the tubular density, the
number of tubules per glomerulus and the fractal dimension of the tubular lumen
in the cortex (an index of complexity of the tubular lumen). For each patient,
hemato-chemical data have been retrieved, including the uric acid level and the
creatinine-based eGFR. RESULTS: A linear relationship between eGFR and glomerular
density was observed in hypertension and FSGS, but not in diabetic nephropathy.
Conversely, the eGFR correlated with the tubular density across different
glomerular conditions. Moreover, the tubular density was linearly correlated with
uric acid levels in different pathological conditions. The fractal dimension of
tubular lumen was correlated with the eGFR but only in hypertensive patients.
Finally, blood pressure was not correlated to any of the morphological indices
tested. CONCLUSIONS: We propose the use of the fractal dimension as a new
morphological descriptor of the nephron integrity.