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. 2012 Jan;166(1):121-9.
doi: 10.1530/EJE-11-0778. Epub 2011 Oct 17.

IGF1 and IGFBP3 in acute respiratory distress syndrome

Amy M Ahasic  1 , Rihong Zhai, Li Su, Yang Zhao, Konstantinos N Aronis, B Taylor Thompson, Christos S Mantzoros, David C Christiani
Affiliations

IGF1 and IGFBP3 in acute respiratory distress syndrome

Amy M Ahasic et al. Eur J Endocrinol. 2012 Jan.

Erratum in

  • Eur J Endocrinol. 2014 Nov;171(5):X4

Abstract

Objective: IGF1 and its most abundant binding protein, IGF-binding protein 3 (IGFBP3), have been implicated in fibrotic lung diseases and persistent acute respiratory distress syndrome (ARDS) due to profibrogenic and antiapoptotic activity. Whether circulating levels of IGF1 and IGFBP3 are altered in ARDS and whether they predict progression of and survival from ARDS remains unknown. This study aims to characterize the circulating levels of IGF1 and IGFBP3 in patients at risk for ARDS in relation to i) development of ARDS and ii) mortality among ARDS cases.

Design: In this case-cohort study, consecutive patients with risk factors for ARDS admitted to the intensive care unit were enrolled and followed prospectively for the development of ARDS. Cases were followed for all-cause mortality through day 60. Of the 2397 patients enrolled in the parent study, plasma samples were available in 531 (22%) patients (356 controls and 175 cases) from early in presentation. Total plasma IGF1 and IGFBP3 levels were measured.

Results: After adjusting for relevant clinical covariates including severity of illness, IGF1 and IGFBP3 levels were significantly lower in ARDS cases than in controls (odds ratio (OR), 0.58; P=0.006; OR, 0.57; P=0.0015 respectively). Among the ARDS cases, IGF1 and IGFBP3 levels were significantly lower in the 78 (45%) non-survivors (hazard ratio (HR), 0.70; P=0.024; HR, 0.69; P=0.021 respectively).

Conclusions: Lower circulating levels of IGF1 and IGFBP3 were independently associated with ARDS case status. Furthermore, lower levels were associated with mortality among the ARDS cases. These data support the role of the IGF pathway in ARDS.

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Conflict of interest statement

DECLARATION OF INTEREST: There is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported.

Figures

Figure 1
Figure 1
Study design and patient selection ICU = intensive care unit; ARDS = acute respiratory distress syndrome.
Figure 2
Figure 2
Timing of Plasma Samples Around ICU Admission in Controls (top) or ARDS Onset in Cases (bottom) ICU = intensive care unit; ARDS = acute respiratory distress syndrome
See this image and copyright information in PMC

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