Interplay between innate immunity and iron metabolism after acute pancreatitis

被引:24
作者
Chand, Shayal K. [1 ]
Singh, Ruma G. [1 ]
Pendharkar, Sayali A. [1 ]
Bharmal, Sakina H. [1 ]
Petrov, Maxim S. [1 ]
机构
[1] Univ Auckland, Dept Surg, Auckland, New Zealand
关键词
Innate immunity; Interleukin-6; Lipopolysaccharide binding protein; Acute pancreatitis; Hepcidin; Ferritin; LIPOPOLYSACCHARIDE-BINDING PROTEIN; SOLUBLE TRANSFERRIN RECEPTOR; HEMOGLOBIN GLYCATION INDEX; NECROSIS-FACTOR-ALPHA; DIABETES-MELLITUS; SERUM FERRITIN; INSULIN-RESISTANCE; RISK-FACTORS; GLUCOSE; POPULATION;
D O I
10.1016/j.cyto.2017.09.014
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Emerging evidence shows that chronic low-grade inflammation and changes in markers of innate immunity are implicated in a range of metabolic abnormalities following an episode of acute pancreatitis. Also, deranged iron metabolism has been linked to type 2 diabetes mellitus, gestational diabetes, and new-onset diabetes after pancreatitis the conditions characterized by high haemoglobin glycation index (HGI). This study aimed to investigate the associations between markers of innate immunity and iron metabolism in individuals after acute pancreatitis. Fasting blood samples were collected to analyse lipopolysaccharide binding protein (LBP), interleukin (IL)-6, tumor necrosis factor-alpha, hepcidin, ferritin, soluble transferrin receptor, HbAlc, and glucose. Participants were categorized into two groups: low HGI and high HGI. Linear regression analyses were conducted, and potential confounders (age, sex, ethnicity, body mass index, diabetes mellitus status, smoking status, aetiology of pancreatitis, duration, recurrence, and severity of pancreatitis) were adjusted for in 5 statistical models. A total of 93 patients following an episode of acute pancreatitis were included, of who 40 (43%) had high HGI. In the overall cohort, LBP was significantly associated with hepcidin and ferritin, and IL-6 was significantly associated with hepcidin, consistently in all the models. Further, LBP contributed to 7.7% and 9.5% of variance in hepcidin and ferritin levels, respectively, whereas IL-6 contributed to 5.3% of hepcidin variance. Upon subgroup analysis, the observed LBP associations were maintained in the high HGI subgroup only and the IL-6 association in the low HGI subgroup only. No consistently significant associations were found between any of the other markers. The interplay between LBP, IL-6, hepcidin, and ferritin characterizes metabolic derangements after acute pancreatitis and may play a role in the pathogenesis of new-onset diabetes after pancreatitis.
引用
收藏
页码:90 / 98
页数:9
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