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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 Medicine+(Baltimore)
2016 ; 95
(37
): e4871
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Antineutrophilic cytoplasmic antibody-associated vasculitis with
hypocomplementemia has a higher incidence of serious organ damage and a poor
prognosis
#MMPMID27631255
Fukui S
; Iwamoto N
; Umeda M
; Nishino A
; Nakashima Y
; Koga T
; Kawashiri SY
; Ichinose K
; Hirai Y
; Tamai M
; Nakamura H
; Origuchi T
; Sato S
; Kawakami A
Medicine (Baltimore)
2016[Sep]; 95
(37
): e4871
PMID27631255
show ga
A relationship between antineutrophilic cytoplasmic antibody (ANCA)-associated
vasculitis (AAV) and complement has been shown, and complement has an important
role in the pathogenesis of AAV. The clinical characteristics of AAV with
hypocomplementemia still remain unclear.We conducted an observational study of 81
patients with AAV (median onset age 71 years; 58% female). Using medical records,
we analyzed the patients' baseline variables, laboratory data, clinical symptoms,
and therapeutic outcomes after treatments including episodes of relapses,
initiation of dialysis, and death. We defined hypocomplementemia as the state in
which at least one of the following was lower than the lower limit of the normal
range: complement 3 (C3), complement 4 (C4), and total complement activity
(CH50).Sixteen patients (20%) had hypocomplementemia at their diagnosis of AAV.
Compared to the AAV patients without hypocomplementemia (n?=?65), those with
hypocomplementemia had significantly higher rates of the occurrence of skin
lesions (8 [50%] vs. 8 [12%], P?=?0.002), diffuse alveolar hemorrhage (DAH) (6
[38%] vs. 5 [8%], P?=?0.006), and thrombotic microangiopathy (TMA) (3 [19%] vs. 0
[0%], P?=?0.007). The AAV patients with hypocomplementemia had significantly
lower platelet levels (16.5?×?10 vs. 24.9?×?10?cells/?L, P?=?0.023) compared to
those without hypocomplementemia. More positive immune complex deposits in renal
biopsy specimens were seen in the AAV patients with hypocomplementemia than in
those without hypocomplementemia (4 [80%] vs. 2 [18%], P?=?0.036). Assessed by a
log-rank test, hypocomplementemia at disease onset was significantly associated
with death (P?=?0.033).Hypocomplementemia in AAV at the disease onset was a risk
factor for the serious organ damage, and a life prognostic factor. It is thus
very important to pay attention to the levels of complement at the diagnosis of
AAV.