Universität zu Köln

Kuiper-Makris, Celien, Zanetti, Daniela, Vohlen, Christina, Fahle, Luise, Mueller, Marion, Odenthal, Margarete, Felderhoff-Mueser, Ursula, Doetsch, Joerg and Alejandre Alcazar, Miguel A. (2020). Mendelian randomization and experimental IUGR reveal the adverse effect of low birth weight on lung structure and function. Sci Rep, 10 (1). BERLIN: NATURE RESEARCH. ISSN 2045-2322

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Abstract

Intrauterine growth restriction (IUGR) and low birth weigth (LBW) are risk factors for neonatal chronic lung disease. However, maternal and fetal genetic factors and the molecular mechanisms remain unclear. We investigated the relationship between LBW and lung function with Mendelian randomisation analyses and studied angiogenesis in a low protein diet rat model of IUGR. Our data indicate a possible association between LBW and reduced FEV1 (p=5.69E-18, MR-PRESSO) and FVC (6.02E-22, MR-PRESSO). Complimentary, we demonstrated two-phased perinatal programming after IUGR. The intrauterine phase (embryonic day 21) is earmarked by a reduction of endothelial cell markers (e.g. CD31) as well as mRNA expression of angiogenic factors (e.g., Vegfa, Flt1, Klf4). Protein analysis identified an activation of anti-angiogenic mTOR effectors. In the postnatal phase, lung capillaries (<20 <mu>m) were significantly reduced, expression of CD31 and VE-Cadherin were unaffected, whereas SMAD1/5/8 signaling and Klf4 protein were increased (p<0.01). Moreover, elevated proteolytic activity of MMP2 and MMP9 was linked to a 50% reduction of lung elastic fibres. In conclusion, we show a possible link of LBW in humans and reduced lung function in adulthood. Experimental IUGR identifies an intrauterine phase with inhibition of angiogenic signaling, and a postnatal phase with proteolytic activity and reduced elastic fibres.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kuiper-Makris, Celien UNSPECIFIED UNSPECIFIED UNSPECIFIED Zanetti, Daniela UNSPECIFIED UNSPECIFIED UNSPECIFIED Vohlen, Christina UNSPECIFIED UNSPECIFIED UNSPECIFIED Fahle, Luise UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, Marion UNSPECIFIED UNSPECIFIED UNSPECIFIED Odenthal, Margarete UNSPECIFIED UNSPECIFIED UNSPECIFIED Felderhoff-Mueser, Ursula UNSPECIFIED UNSPECIFIED UNSPECIFIED Doetsch, Joerg UNSPECIFIED UNSPECIFIED UNSPECIFIED Alejandre Alcazar, Miguel A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-307354
DOI:	10.1038/s41598-020-79245-7
Journal or Publication Title:	Sci Rep
Volume:	10
Number:	1
Date:	2020
Publisher:	NATURE RESEARCH
Place of Publication:	BERLIN
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTRAUTERINE GROWTH RESTRICTION; INJURY; ALVEOLAR Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/30735