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  • Jansson, John-Olov,1954Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology (author)

A Body Weight Sensor Regulates Prepubertal Growth via the Somatotropic Axis in Male Rats

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021-03-10
  • The Endocrine Society,2021

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/305480
  • https://gup.ub.gu.se/publication/305480URI
  • https://doi.org/10.1210/endocr/bqab053DOI

Supplementary language notes

  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • In healthy conditions, prepubertal growth follows an individual specific growth channel. Growth hormone (GH) is undoubtedly the major regulator of growth. However, the homeostatic regulation to maintain the individual specific growth channel during growth is unclear. We recently hypothesized a body weight sensing homeostatic regulation of body weight during adulthood, the gravitostat. We now investigated if sensing of body weight also contributes to the strict homeostatic regulation to maintain the individual specific growth channel during prepubertal growth. To evaluate the effect of increased artificial loading on prepubertal growth, we implanted heavy (20% of body weight) or light (2% of the body weight) capsules into the abdomen of 26-day-old male rats. The body growth, as determined by change in biological body weight and growth of the long bones and the axial skeleton, was reduced in rats bearing a heavy load compared with light load. Removal of the increased load resulted in a catch-up growth and a normalization of body weight. Loading decreased hypothalamic growth hormone releasing hormone mRNA, liver insulin-like growth factor (IGF)-1 mRNA, and serum IGF-1, suggesting that the reduced body growth was caused by a negative feedback regulation on the somatotropic axis and this notion was supported by the fact that increased loading did not reduce body growth in GH-treated rats. Based on these data, we propose the gravitostat hypothesis for the regulation of prepubertal growth. This states that there is a homeostatic regulation to maintain the individual specific growth channel via body weight sensing, regulating the somatotropic axis and explaining catch-up growth.

Subject headings and genre

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  • Dalmau Gasull, AdriaGothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xdalad (author)
  • Schele, ErikGothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology (author)
  • Dickson, Suzanne L.,1966Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xdicsu (author)
  • Palsdottir, Vilborg,1979Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xpalvi (author)
  • Palmquist, Anders,1977Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för biomaterialvetenskap,Institute of Clinical Sciences, Department of Biomaterials(Swepub:gu)xpaand (author)
  • Font Gironès, FerranGothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xfontf (author)
  • Bellman, JakobGothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xbelja (author)
  • Anesten, FredrikGothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xanefr (author)
  • Hägg, Daniel,1974Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Centre for Bone and Arthritis Research,Institute of Neuroscience and Physiology, Department of Physiology(Swepub:gu)xhagda (author)
  • Ohlsson, Claes,1965Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Centre for Bone and Arthritis Research,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition(Swepub:gu)xohlcl (author)
  • Göteborgs universitetInstitutionen för neurovetenskap och fysiologi, sektionen för fysiologi (creator_code:org_t)

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  • In:Endocrinology: The Endocrine Society162:60013-72271945-7170

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