顺铂连续和间隔造模诱发的药源性虚证小鼠类固醇激素合成能力的比较研究
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1.上海中医药大学基础医学院,上海 201203; 2. 上海中医药大学附属曙光医院,上海 201203

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Comparative study of steroid hormone synthesis in a drug-induced deficiency syndrome by continuous and interval administration of cisplatin in mice
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1.School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. 2. Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203

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    摘要:

    目的 研究顺铂不同给药方案对小鼠类固醇激素合成及储备功能的影响。 方法 40 只雌性 ICR 小鼠分为 4 组,顺铂连续和间隔造模组以及两个对照组。 顺铂连续造模组给药 7 d,每天注射 3 mg / kg 顺铂;间隔造模组每周注射 1 次 10 mg / kg 顺铂,共 4 次。末次造模前进行旷场实验、转棒疲劳实验、抓力测试;次日处死前称体重, 摘取小鼠心脏、脾、胸腺和双侧肾并称重;RT-qPCR 检测下丘脑 GnRHCRH、垂体 PomcFshbLhbPou1f1 基因表达,以及肾上腺和卵巢类固醇合成酶(StAR、Cyp11a1、Cyp21a1、Cyp17a1、Cyp11b1、Hsd3b2、Cyp19a1、Hsd17b1)及受体 (Esr1、Esr2 和 Gper1)基因表达;Western Blot 检测肾上腺和卵巢 StAR、CYP11A1、CYP21A2 和 CYP11B1 蛋白表达。 结果 与对照组比较:(1)不同频次顺铂造模均可抑制小鼠体重增长,顺铂累积后可以诱导小鼠气虚证表现,并抑制脏器质量。 (2)不同频次顺铂造模均能加速激活原始卵泡分化,产生大量闭锁卵泡,诱导膜细胞及颗粒细胞凋亡, 健康的成熟卵泡减少;但对肾上腺组织和细胞形态影响不大。 (3)连续造模后肾上腺 StAR 蛋白表达下调;间隔造模后 StAR 升高,但下调 CYP11B1 蛋白表达。 (4)连续造模后,卵巢 Cyp11a1、Hsd3b2、Esr1 和 Gper1 基因表达上调, Star 和 Cyp17a1 基因表达下调;间隔造模后 StAR 蛋白表达和 Hsd3b2 基因表达下调。 (5)顺铂连续造模后下丘脑 GnRHCRH 基因表达明显下调。 (6)顺铂连续造模后垂体 PomcFshbPou1f1 基因表达升高,而间隔造模组 Lhb 表达下降。 结论 顺铂能够诱发小鼠气虚、精气不足证的相关表现;合成类固醇激素的卵巢受到选择性损伤大于肾上腺,短期连续给药也进一步抑制 HPA 轴和 HPG 轴的高级中枢下丘脑和垂体功能。

    Abstract:

    Objective To research the effect of different administration protocols of cisplatin on the biosynthesis and reserve of steroids in mice. Methods Forty female ICR mice were randomly divided into four groups: a cisplatin continuous administration group (CA-group), a cisplatin interval administration group (IA-group), and two corresponding control groups. The CA-group was injected with 3 mg / kg cisplatin for 7 consecutive days. The IA-group was injected with 10 mg / kg cisplatin once per week, for 4 weeks. Rotating-stick, holding power, movements and axillary temperature were examined before the last injection, also the end of laboratory animal model making. The day after, the mice were killed, the visceral organs were separated weighed, included the kidney, heart, thymus and spleen. Relative mRNA expression levels in the hypothalamus (GnRH and CRH), pituitary (Pomc, Fshb, Lhb, and Pou1f1), adrenal and ovary (StAR, Cyp11a1, Cyp21a1, Cyp17a1, Cyp11b1, Hsd3b2, Cyp19a1, Hsd17b1, Esr1, Esr2, and Gper1) tissue were examined by RT-qPCR. Protein expression levels ( StAR, CYP11A1, CYP21A2 and CYP11B1) in adrenal and ovary tissues were examined. Results Compared with the control group, body weight was reduced by cisplatin in two different mouse models. Visceral organs were inhibited and the Qi deficiency syndrome was induced by cisplatin administration. In two different cisplatin models, murine primordial follicles showed accelerated activation and differentiation, and many atretic follicles were produced containing apoptotic granulosa and theca cells. Healthy mature follicle numbers were reduced significantly. There were no detectable changes in adrenal histology. In adrenal tissue, StAR expression was inhibited in the CA-group and upregulated in the IA-group, which also exhibited reduced CYP11B1 protein expression. In the ovary, the expression levels of Cyp11a1, Hsd3b2, Esr1, and Gper1 mRNAs were upregulated and Star and Cyp17a1 mRNA expression was reduced in the CA-group. The expression levels of StAR protein and Hsd3b2 mRNA were decreased in the IA-group. In the hypothalamus, the expression levels of GnRH and CRH mRNAs were reduced in the CA-group. In the pituitary, the expression levels of Pomc, Fshb and Pou1f1 mRNAs were increased in the CA-group, and level of Lhb mRNA was reduced in the IA-group. Conclusions Qi deficiency syndrome and vital essence deficiency syndrome in mice can be induced by cisplatin. The ovary was damaged more significantly and selectivity than the adrenal gland. The functions of the hypothalamus and pituitary were further inhibited by continuous cisplatin injection in the short-term.

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农淄心,邓琳,张超峰,贺健祥,谢海纳,潘志强.顺铂连续和间隔造模诱发的药源性虚证小鼠类固醇激素合成能力的比较研究[J].中国实验动物学报,2021,29(5):626~636.

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  • 收稿日期:2021-04-26
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