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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 PLoS+One
2015 ; 10
(12
): e0145083
Nephropedia Template TP
gab.com Text
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Salivary Immunoglobulin A Secretion Rate Is Negatively Associated with Cancer
Mortality: The West of Scotland Twenty-07 Study
#MMPMID26699127
Phillips AC
; Carroll D
; Drayson MT
; Der G
PLoS One
2015[]; 10
(12
): e0145083
PMID26699127
show ga
Immunoglobulins are essential for combating infectious disease although very high
levels can indicate underlying pathology. The present study examined associations
between secretory immunoglobulin A (sIgA) in saliva and mortality rates in the
general population. Participants were 639 adults from the eldest cohort of the
West of Scotland Twenty-07 Study aged 63 years at the time of saliva sampling in
1995. From unstimulated 2-minute saliva samples, saliva volume and S-IgA
concentration were measured, and S-IgA secretion rate determined as their
product. Mortality data were tracked for 19 years. Cox proportional hazard models
were applied to compute hazard ratios (HR) for all-cause mortality from sIgA
secretion rate. Associations were adjusted for gender, assay batch, household
occupational group, smoking, medication usage, and self-reported health. There
was a negative association between log sIgA secretion rate and all-cause
mortality, HR = 0.81, 95%CI = 0.73-0.91, p < .001. Further analysis of specific
causes of mortality revealed that the all-cause association was due to an
underlying association with cancer mortality and in particular with cancers other
than lung cancer. The HR for non-lung cancer was 0.68 (95%CI = 0.54 to 0.85)
implying a 32% reduction in mortality risk per standard deviation rise in log
sIgA secretion rate. Effects were stronger for men than women. For deaths from
respiratory diseases, sIgA secretion had a non-linear relationship with mortality
risk whereby only the very lowest levels of secretion were associated with
elevated risk. SIgA concentration revealed a similar but weaker pattern of
association. In the present study, higher secretion rates of sIgA were associated
with a decreased risk of death from cancer, specifically non-lung cancer, as well
as from respiratory disease. Thus, it appears that sIgA plays a protective role
among older adults, and could serve as a marker of mortality risk, specifically
cancer mortality.
|Adult
[MESH]
|Aged
[MESH]
|Biomarkers/*analysis
[MESH]
|Female
[MESH]
|Humans
[MESH]
|Immunoglobulin A, Secretory/analysis/*metabolism
[MESH]