
TY  - JOUR
A1  - McIntosh, GH 
A1  - Howard, DA 
A1  - Mano, MT 
A1  - Wellby, AML 
A1  - Hetzel, BS 
T1  - Iodine Deficiency and Brain Development in the Rat
JF  - Australian Journal of Biological Sciences
JO  - Aust. Jnl. Of Bio. Sci.
Y1  - 1981
VL  - 34
IS  - 4
SP  - 427
EP  - 434
KW  - 
UR  - https://doi.org/10.1071/BI9810427 
N2  - An assessment was made of the influence of low-iodine diet on somatic and brain development at birth (day 0) and 21 days postnatally in the rat. The rat mothers were proven to be iodine-deficient by assay of plasma thyroxine and thyroid stimulating hormone prior to mating, and at 21 days postnatally, when maternal thyroids were removed, weighed and stored for subsequent iodine analysis, along with those of the offspring. There were no significant differences in body weight or brain weight of the offspring at birth, or in the content of DNA or protein. However, at 21 days there was a significant reduction in body weight (21 ·7%) and whole brain weight (7·9 %, P < 0·02) which was associated with a significant fall in cholesterol content (12·4 %, P < 0·05) and protein level (9·6%, P < 0·01), while DNA was not significantly affected (6%). The greatest reduction in weight was seen in the cerebellum. The thyroids in these rats were double normal size, showed follicular cell hypertrophy and absence of colloid histologically, and contained 8 % of the iodine content of controls. 
ER  -

