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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 BMJ+Open+Gastroenterol
2014 ; 1
(1
): e000004
Nephropedia Template TP
gab.com Text
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English Wikipedia
The morphological and immunohistochemical spectrum of gastric biopsies of
patients with absorptive hypercalciuria
#MMPMID26462262
Declich P
; Belloni J
; Tavani E
; Omazzi B
; Bellone S
; Bortoli A
; Arena I
; Devani M
BMJ Open Gastroenterol
2014[]; 1
(1
): e000004
PMID26462262
show ga
OBJECTIVE: Idiopathic hypercalciuria is characterised by renal stone formation
and vertebral osteoporosis. The syndrome displays high clinical variability with
patients almost equally distributed between fasting or renal type (prevalent
calcium loss) and absorptive type (prevalent increase of intestinal absorption).
Absorptive hypercalciuria (AH) is characterised by hypersensitivity of
calcium-sensing receptors of antral G cells with normal fasting gastrinaemia and
meal hypergastrinaemia. To the best of our knowledge, no study has been published
about the morphological aspects of gastric biopsies of patients with AH and the
immunohistochemical findings of gastrin-producing G cells. So we studied
morphologically and immunohistochemically a group of 38 patients with AH,
describing their gastric findings and associated lesion. DESIGN: All 38 patients
had a clinical-laboratory diagnosis of AH with normal fasting hypergastrinaemia
and an abnormal rise of gastrinaemia after a standardised meal test. Their 38
antral and 27 body-fundus biopsies, and 5 normal antral and body controls, were
stained with H&E, Giemsa stain, polyclonal antiserum anti-Gastrin and a
monoclonal antibody anti-Chromogranin A. RESULTS: Antral biopsies of all 38
patients showed a simple (15) or linear (23) hyperplasia of G cells, whereas only
2 of 27 body biopsies showed a nodular hyperplasia of endocrine cells. In five
patients with AH, we found an association with fundic gland polyps (FGPs).
CONCLUSIONS: We found in all of the patients with AH a correlation between meal
hypergastrinaemia and morphological antral G-cell hyperplasia. Moreover, in five
patients, AH was associated with FGPs. We know from literature data that FGPs'
development in Zollinger-Ellison syndrome is statistically associated with
hypergastrinaemia. From our present data, we suggest that even in AH the
stimulated hypergastrinaemia may have a role in polyp development.