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Sun, Li; Peng, Yuanzhen; Sharrow, Allison C.; Iqbal, Jameel; Zhang, Zhiyuan; Papachristou, Dionysios J.; Zaidi, Samir; Zhu, Ling-Ling; Yaroslavskiy, Beatrice B.; Zhou, Hang; Zallone, Alberta; Sairam, M. Ram; Kumar, T. Rajendra; Bo, Wei; Braun, Jonathan; Cardoso-Landa, Luis; Schaffler, Mitchell B.; Moonga, Baljit S.; Blair, Harry C.; Zaidi, Mone
Cell, 04/2006, Letnik: 125, Številka: 2Journal Article
Postmenopausal osteoporosis, a global public health problem, has for decades been attributed solely to declining estrogen levels. Although FSH levels rise sharply in parallel, a direct effect of FSH on the skeleton has never been explored. We show that FSH is required for hypogonadal bone loss. Neither FSHβ nor FSH receptor (FSHR) null mice have bone loss despite severe hypogonadism. Bone mass is increased and osteoclastic resorption is decreased in haploinsufficient FSHβ +/− mice with normal ovarian function, suggesting that the skeletal action of FSH is estrogen independent. Osteoclasts and their precursors possess G i2α-coupled FSHRs that activate MEK/Erk, NF-κB, and Akt to result in enhanced osteoclast formation and function. We suggest that high circulating FSH causes hypogonadal bone loss.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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