|
|
|
|
| 促性腺激素刺激卵巢趋化因子Fractalkine的表达，而Fractalkine通过使颗粒细胞黄体化增加孕酮的生物合成 |
|
|
|
|
|
| Gonadotropin stimulation of ovarian fractalkine expression and fractalkine augmentation of progesterone biosynthesis by luteinizing granulosa cells |
|
|
|
|
|
| Zhao P., De A., Hu Z., Li J., Mulders S.M., Sollewijn Gelpke M.D., Duan E.-K., Hsueh A.J.W. 2009/5/29 18:38:57 |
|
|
【发表评论】
|
|
|
|
|
打印|
推荐给好友
|
|
|
Endocrinology, 2008, Volume 149, Issue 6
|
|
|
|
|
|
|
| Recent studies indicated that ovarian functions are regulated by diverse paracrine factors induced by the preovulatory increases in circulating LH. Based on DNA microarray analyses and real-time RT-PCR, we found a major increase in the transcript levels of a chemokine fractalkine after human chorionic gonadotropin (hCG) treatment during the preovulatory period in gonadotropin-primed immature mice and rats. Although CX3CR1, the seven-transmembrane receptor for fractalkine, was also found in murine ovaries, its transcripts displayed minimal changes. Using tandem RT-PCR and immunohistochemistry, fractalkine transcripts and proteins were localized in cumulus, mural granulosa, and theca cells as well as the oocytes, whereas CX3CR1 was found in the same cells except the oocyte. Real-time RT-PCR further indicated the hCG induction of fractalkine transcripts in different ovarian compartments, with the highest increases found in granulosa cells. In cultured granulosa cells, treatment with fractalkine augmented hCG stimulation of progesterone but not estradiol and cAMP biosynthesis with concomitant increases in transcript levels for key steroidogenic enzymes (steroidogenic acute regulatory protein, CYP11A, and 3β-hydroxysteroid dehydrogenase). In cultured preovulatory follicles, treatment with fractalkine also augmented progesterone production stimulated by hCG. Furthermore, treatment with fractalkine augmented the phosphorylation of P38 MAPK in cultured granulosa cells. The present data demonstrated that increases in preovulatory LH/hCG induce the expression of fractalkine to augment the luteinization of preovulatory granulosa cells and suggest the fractalkine/CX3CR1 signaling system plays a potential paracrine/autocrine role in preovulatory follicles. Copyright © 2008 by The Endocrine Society. |
|
|
|
|
|
|
| Correspondence Address: Duan, E.-K.; Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; email: duane@ioz.ac.cn |
|
|
|
|
|
|
|
|
|
|
|
请登录后发表评论，点击此处登录。
|
|
|
 疾病资源中心
王燕燕 王曙
上海交通大学附属瑞金医院内分泌科
患者，女，69岁。2009年1月无明显诱因下出现乏力，当时程度较轻，未予以重视。2009年3月患者乏力症状加重，尿色逐渐加深，大便习惯改变，颜色变淡。4月18日入我院感染科治疗，诉轻度头晕、心慌，体重减轻10kg。无肝区疼痛，无发热，无腹痛、腹泻、腹胀、里急后重，无恶性、呕吐等。入院半月前于外院就诊，查肝功能：ALT 601IU/L，AST 785IU/L，TBIL 97.7umol/L，白蛋白 41g/L，甲状腺功能：游离T3 30.6pmol/L，游离T4 51.9pmol/L，心电图示快速房颤。
医学数据库
|
