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The IGF system and ...
The IGF system and longitudinal growth in preterm infants in relation to gestational age, birth weight and gender
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- Hellström, Ann, 1959 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
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Sigurdsson, J. (författare)
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- Löfqvist, Chatarina, 1964 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institutionen för vårdvetenskap och hälsa,Institute of Neuroscience and Physiology,Institute of Health and Care Sciences
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- Hellgren, Gunnel, 1961 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin,Institutionen för neurovetenskap och fysiologi,Institute of Biomedicine,Institute of Neuroscience and Physiology
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- Kistner, A. (författare)
- Karolinska Institutet
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- Engelska.
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Ingår i: Growth Hormone & Igf Research. - : Elsevier BV. - 1096-6374. ; 51, s. 46-57
- Relaterad länk:
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Objective: Growth factors in the blood of very preterm infants may reflect growth and contribute to the understanding of early development. We investigated postnatal levels of insulin-like growth factors (IGFs) in infants born very preterm and related them to early growth development. Design: Blood samples were analyzed weekly for IGF-I, IGF-II, IGF binding protein (BP)-1, IGFBP-3, and acid-label subunit (ALS). Methods: 73 children born very preterm (gestational age (GA) < 32 weeks) were divided according to their gender-specific birth weight standard deviation score (SDS) into either appropriate for GA (AGA) or small for GA (SGA). Fifty-two (71%) and forty-three (59%) infants completed follow-up with anthropometry at approximately 3 years and at 5 years of age respectively. Thirty-six subjects (49%) had blood sampling for IGF-I and IGFBP-3 measurements up to 3 years of age. Results: IGF-I, IGFBP-3, and ALS levels increased in all groups from week 31 to week 36, with generally lower levels in the SGAs, with a concomitant lower growth velocity. Postnatal ALS was strongly associated with IGF-I and IGFBP-3 in boys, girls and AGA infants. IGF-II was higher in earlier born preterms (GA < 27 weeks) at postmenstrual ages 27.5-29.9 weeks compared with SGAs and late GA (GA >= 27 weeks) preterms (p <.0001). IGF-II, in contrast to IGF-I, did not differ between SGAs and AGAs at weeks 31-36. Mean IGFBP-1 was highest in the SGAs compared to AGAs at mean week 28,5 and 31 (p=.001) and IGFBP-1 levels were elevated in relation to IGF-I in the SGAs at that period. At follow-up, the increase in IGF-I between week 31 and 33.5 was a significant positive determinant of height SDS at 3 and 5 years of age in forward multiple regression analysis, independent of target height. Conclusion: This is the first study to investigate postnatal ALS levels in preterm infants. In very preterm infants, IGF-II is less affected by size at birth during early postnatal weeks compared with IGF-I. Early elevated IGFBP-1 might protect the SGA infants from an intense metabolic rate. Our results indicate that anabolic and metabolic processes during weeks 31-36 predicts later height.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Pediatrik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Pediatrics (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Neurologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Neurology (hsv//eng)
Nyckelord
- Preterm children
- IGF-I
- IGF-II
- IGFBP-I
- ALS
- acid-labile subunit
- factor-i
- binding protein-1
- postnatal-growth
- insulin
- retinopathy
- prematurity
- leptin
- deficiency
- variables
- Cell Biology
- Endocrinology & Metabolism
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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