| First Author | Wallenius V | Year | 2001 |
| Journal | Endocrinology | Volume | 142 |
| Issue | 7 | Pages | 2953-60 |
| PubMed ID | 11416016 | Mgi Jnum | J:71930 |
| Mgi Id | MGI:2151281 | Doi | 10.1210/endo.142.7.8270 |
| Citation | Wallenius V, et al. (2001) Retarded liver growth in interleukin-6-deficient and tumor necrosis factor receptor-1-deficient mice. Endocrinology 142(7):2953-60 |
| abstractText | The liver size in adult mammals is tightly regulated in relation to body weight, but the hormonal control of this is largely unknown. We investigated the roles of interleukin-6 (IL-6) and tumor necrosis factor (TNF) receptor-1 in the regulation of intact liver weight in adult mice. The relative liver wet and dry weights of older adult (5- to 10-month-old) IL-6 knockout (IL-6(-/-)) mice were decreased by 22-28%, and total contents of DNA and protein were decreased compared with those in age-matched wild-type mice. Weights of other visceral organs were unaffected. Older adult (6- to 8-month-old) TNF receptor-1 knockout (TNFR1(-/-)) mice displayed decreased relative liver weight. Treatment with a single injection of IL-6 increased liver wet and dry weights in IL-6(-/-) and wild-type mice, but not TNFR1(-/-) mice. Treatment with TNFalpha enhanced liver weight and DNA synthesis of nonparenchymal liver cells at 24 h in wild-type, but not IL-6(-/-), mice. At 48 h, TNFalpha induced DNA synthesis in nonparenchymal cells and hepatocytes of both wild-type and IL-6(-/-) mice. In conclusion, TNF receptor-1 stimulation and IL-6 production are both necessary for normal liver weight gain in older adult mice. The results of TNFalpha and IL-6 treatment further indicate that the effects of TNF receptor-1 and IL-6 depend on each other for full stimulation of liver growth. |
