Abstract
Thyroid hormones (THs) are vital for normal postnatal development. Extracellular TH distributor proteins create an intravascular reservoir of THs. Transthyretin (TTR) is a TH distributor protein in the circulatory system and is the only TH distributor protein synthesized in the central nervous system. We investigated the phenotype of TTR null mice during development. Total and free 3′,5′,3,5-tetraiodo-L-thyronine (T4) and free 3′,3,5- triiodo-L-thyronine (T3) in plasma were significantly reduced in 14- day-old (P14) TTR null mice. TTR null mice also displayed a delayed suckling-to-weaning transition, decreased muscle mass, delayed growth, and retarded longitudinal bone growth. In addition, ileums from postnatal day 0 (P0) TTR null mice displayed disordered architecture and contained fewer goblet cells than wild type. Protein concentrations in cerebrospinal fluid from P0 and P14 TTR null mice were higher than in age-matched wild-type mice. In contrast to the current literature based on analyses of adult TTR null mice, our results demonstrate that TTR has an important and nonredundant role in influencing the development of several organs.
| Original language | English (US) |
|---|---|
| Journal | American Journal of Physiology - Endocrinology and Metabolism |
| Volume | 304 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2013 |
| Externally published | Yes |
Fingerprint
Keywords
- Bone
- Brain
- Central nervous system
- Intestine
ASJC Scopus subject areas
- Physiology
- Physiology (medical)
- Endocrinology, Diabetes and Metabolism
Cite this
Delayed development of specific thyroid hormone-regulated events in transthyretin null mice. / Monk, Julie A.; Sims, Natalie A.; Dziegielewska, Katarzyna M.; Weiss, Roy E; Ramsay, Robert G.; Richardson, Samantha J.
In: American Journal of Physiology - Endocrinology and Metabolism, Vol. 304, No. 1, 01.01.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Delayed development of specific thyroid hormone-regulated events in transthyretin null mice
AU - Monk, Julie A.
AU - Sims, Natalie A.
AU - Dziegielewska, Katarzyna M.
AU - Weiss, Roy E
AU - Ramsay, Robert G.
AU - Richardson, Samantha J.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Thyroid hormones (THs) are vital for normal postnatal development. Extracellular TH distributor proteins create an intravascular reservoir of THs. Transthyretin (TTR) is a TH distributor protein in the circulatory system and is the only TH distributor protein synthesized in the central nervous system. We investigated the phenotype of TTR null mice during development. Total and free 3′,5′,3,5-tetraiodo-L-thyronine (T4) and free 3′,3,5- triiodo-L-thyronine (T3) in plasma were significantly reduced in 14- day-old (P14) TTR null mice. TTR null mice also displayed a delayed suckling-to-weaning transition, decreased muscle mass, delayed growth, and retarded longitudinal bone growth. In addition, ileums from postnatal day 0 (P0) TTR null mice displayed disordered architecture and contained fewer goblet cells than wild type. Protein concentrations in cerebrospinal fluid from P0 and P14 TTR null mice were higher than in age-matched wild-type mice. In contrast to the current literature based on analyses of adult TTR null mice, our results demonstrate that TTR has an important and nonredundant role in influencing the development of several organs.
AB - Thyroid hormones (THs) are vital for normal postnatal development. Extracellular TH distributor proteins create an intravascular reservoir of THs. Transthyretin (TTR) is a TH distributor protein in the circulatory system and is the only TH distributor protein synthesized in the central nervous system. We investigated the phenotype of TTR null mice during development. Total and free 3′,5′,3,5-tetraiodo-L-thyronine (T4) and free 3′,3,5- triiodo-L-thyronine (T3) in plasma were significantly reduced in 14- day-old (P14) TTR null mice. TTR null mice also displayed a delayed suckling-to-weaning transition, decreased muscle mass, delayed growth, and retarded longitudinal bone growth. In addition, ileums from postnatal day 0 (P0) TTR null mice displayed disordered architecture and contained fewer goblet cells than wild type. Protein concentrations in cerebrospinal fluid from P0 and P14 TTR null mice were higher than in age-matched wild-type mice. In contrast to the current literature based on analyses of adult TTR null mice, our results demonstrate that TTR has an important and nonredundant role in influencing the development of several organs.
KW - Bone
KW - Brain
KW - Central nervous system
KW - Intestine
UR - http://www.scopus.com/inward/record.url?scp=84871860089&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871860089&partnerID=8YFLogxK
U2 - 10.1152/ajpendo.00216.2012
DO - 10.1152/ajpendo.00216.2012
M3 - Article
C2 - 23092911
AN - SCOPUS:84871860089
VL - 304
JO - American Journal of Physiology - Cell Physiology
JF - American Journal of Physiology - Cell Physiology
SN - 0363-6143
IS - 1
ER -