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促性腺激素释放激素类似物对化疗大鼠卵巢功能损害的干预作用 被引量:11

Effects of gonadotropin releasing hormone analogues on chemotherapy-induced ovarian function damage in rats
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摘要 目的探讨促性腺激素释放激素激动剂(GnRH-a)和拮抗剂(GnRH-ant)对环磷酰胺(CTX)诱导的大鼠卵巢功能损害的干预作用。方法将72只雌性 SD 大鼠随机分为6组,即对照组[腹腔注射生理盐水(NS)0.1 ml/d×11 d]、CTX 组(第1天腹腔注射 CTX 50 mg/kg,第2天起腹腔注射 CTX 5 mg/d×10 d)、GnRH-a+NS 组[GnRH-a 0.375 mg 1次深部肌内注射(估计释放量为12.5μg/d,持续28~30 d),于用药第14天左右(连续5 d 观察阴道涂片均处于动情间期)开始注射NS,用药方法同对照组]、GnRH-a+CTX 组(同 GnRH-a+NS 组注射 GnRH-a 后,于用药第14天左右的动情间期开始注射 CTX,用药方法同 CTX 组)、GnRH-ant+NS 组[GnRH-ant 0.3 mg 皮下注射,以后每隔2天注射1次,共4次(估计释放量为100μg/d,共12 d),于第1次 GnRH-ant 皮下注射后第2天开始注射 NS,用药方法同对照组]及 GnRH-ant+CTX 组(同 GnRH-ant+NS 组注射 GnRH-ant 后,于第1次 GnRH-ant 皮下注射后第2天开始注射 CTX,用药方法同 CTX 组];每组12只。用药前后采用酶联免疫吸附法动态检测各组大鼠卵泡刺激素(FSH)、黄体生成素(LH)及雌二醇水平的变化,并于结束用药后的第1周内和第4~5周内(动情间期),各组分别处死6只大鼠,观察卵泡数量、卵巢重量的变化。结果 (1)血清内分泌激素水平:用药前后,对照组的血清 LH、FSH、雌二醇水平无明显变化,CTX 组的血清内分泌激素水平呈上升趋势。用药中,血清 LH、FSH 水平 GnRH-a+CTX 组为(42±8)、(124±45)μg/L,GnRH-a+NS 组为(47±7)、(136±32)μg/L;GnRH-ant+CTX 组为(31±5)、(178±54)μg/L,GnRH-ant+NS 组为(36±7)、(198±27)μg/L;对照组为(118±16)、(350±35)μg/L;CTX 组为(113±15)、(289±42)μg/L;分别比较,差异均具有统计学意义(P<0.05)。血清雌二醇水平 GnRH-ant+CTX 组为(3.98±0.74)ng/L,GnRH-ant+NS 组为(3.58±0.43)ng/L,GnRH-a+CTX 组为(1.46±0.22)ng/L,GnRH-a+NS 组为(0.98±0.18)ng/L 分别比较,差异均有统计学意义(P<0.01)。停药后,GnRH-a+CTX 组、GnRH-a+NS 组及 GnRH-ant+NS 组的血清 LH、FSH、雌二醇水平逐渐接近对照组水平。但停药第4~5周时,GnRH-ant+CTX 组 LH、FSH 水平[(156±12)、(520±44)μg/L]与 CTX 组[(178±18)、(546±36)μg/L]比较,差异无统计学意义(P>0.05)。(2)卵巢重量:停药第1周,GnRH-a+CTX 组大鼠双侧卵巢重量为(18±8)mg/100 g,GnRH-a+NS 组为(12±5)mg/100 g,均明显低于其他各组[(30±9)~(37±8)mg/100 g],差异均有统计学意义(P<0.05);停药第4~5周,GnRH-ant+CTX 组大鼠双侧卵巢重量为(22±6)mg/100 g,CTX 组为(20±4)mg/100 g,均明显低于其他各组,差异均有统计学意义(P<0.05)。(3)卵泡数量:停药第1周,GnRH-a+CTX 组大鼠卵巢原始卵泡数为(689±39)个,GnRH-a+NS 组为(824±45)个,明显高于 GnRH-ant+CTX 组[(255±24)个]和 CTX 组[(343±29)个];生长卵泡数 GnRH-a+CTX组为(21±3)个,GnRH-a+NS 组为(15±1)个,明显低于 GnRH-ant+CTX 组[(110±21)个]和 CTX组[(87±17)个];分别比较,差异均有统计学意义(P<0.05)。停药第4~5周,GnRH-a+CTX 组和GnRH-a+NS 组的生长卵泡数[(56±16)、(58±11)个]接近对照组水平[(57±9)个];GnRH-ant+CTX 组及 CTX 组的原始卵泡数和生长卵泡数均少于其他4组,差异均有统计学意义(P<0.05)。结论 GnRH-a 对 CTX 诱导的大鼠卵巢功能损害具有保护作用,GnRH-ant 对 CTX 诱导的大鼠卵巢功能损害没有明显的保护作用。 Objective To investigate the effects of gonadotropin releasing hormone agonist (GnRH-a) and antagonist (GnRH-ant) on cyclophosphamide (CTX)-induced ovarian damage in rats. Methods Seventy-two Sprague-Dawley female rats were divided randomly into six groups, which received normal saline ( NS), CTX, GnRH-a + NS, GnRH-a + CTX, GnRH-ant + NS, and GnRH-ant + CTX respectively. Levels of serum follicle-stimulating hormone ( FSH), luteinizing hormone (LH) and estradiol ( E2 ) were measured successively by the enzyme-linked immunosorbent assay method, and half of the rats were killed in the first week and between the fourth and the fifth week after stop of medication, respectively to compare the weight of the ovaries and the number of the primordial follicles and the growth follicles. Results ( 1 ) Throughout experiment, the serum levels of FSH, LH and E2 of the control group fluctuated slightly, while those in the CTX group kept rising. During medication treatment, compared with the control group[ ( 118 ± 16) μg/L, (350 ±35) μg/L] and the CTX group[ (113 ± 15) μg/L, (289 ±42) μg/L] ,the concentrations of LH [ (42 ±8) -(47 ±7) μg/L,(31 ±5) - (36 ±7) μg/L] and FSH [ (124 ±45) -(136 ±32)μLg/L, (178 ±54) -( 198 ±27)μg/L] in the GnRH-a groups and the GnRH-ant groups were maintained at low levels significantly and the levels of LH in the GnRH-ant groups were significantly lower than that in the GnRH-a groups, but the levels of FSH in the GnRH-aut groups were significantly higher than that in the GnRH-a groups (P 〈 0. 05 ) ; and extremely different from the GnRH-a groups [ (0. 98 ± 0. 18 ) - ( 1.46 ± 0. 22 ) ng/L], the level of E2 of the GnRH-ant groups [(3.58 ±0.43) - (3.98 ±0.74) ng/L] did not significantly decrease(P 〈 0. 01 ). After stop of therapy, the concentrations of LH, FSH and E2 in the GnRH-a groups and the GnRH-ant + NS group rose gradually and were similar to the levels of the control group ( P 〉 0. 05 ), but the levels of FSH, LH and E2 of the GnRH-ant + CTX group rose obviously and were similar to the levels of the CTX group, especially the FSH , and the levels of LH and FSH of the GnRH-ant + CTX group [ ( 156 ± 12 ) μg/L, (520 ± 44 ) μg/L ] and the CTX group [ ( 178 ± 18 ) μg/L, (546 ± 36 ) μg/L]were significantly higher than that of the other four groups [ ( 121 ± 15 ) - ( 132 ± 13 ) μg/L, ( 335 ±35) - (359 ±26) μg/L] at the 4^th-5^th week after stop of treatment(P 〈0. 05). (2) At the 1^st week after stopping therapy, the GnRH-a + NS group [ ( 12 ± 5 ) mg/100 g] and the GnRH-a + CTX group [ ( 18 ± 8 ) rag/100 g] had the lowest weight of ovaries which was significantly different from the other groups [ ( 30 ±9) - (37 ±8) mg/100 g, P 〈0. 05 ]. At the 4^th-5^th week after stopping therapy, the GnRH-ant + CTX group [ (22 ±6) mg/100 g] and the CTX group [ (20 ±4) mg/100 g] had the lowest weight of ovaries which were significantly different from the other groups [ (29 ±5) - (31 ±9) mg/100 g, P 〈0. 05]. (3) At the 1^st week after stopping therapy, there were the largest number of primordial follicles [ ( 824 ± 45 ), ( 689 ± 39 ) ] and the lowest number of growth follicles [ ( 15 ± 1 ), ( 21 ± 3 ) ] in the GnRH-a + NS group and the GnRH-a + CTX group, but there were the lowest number of primordial follicles [ (255 ±24) , (343 ±29) ] and the largest number of growth follicles [ ( 110 ±21 ), (87 ± 17) ] in the GnRH-ant + CTX group and the CTX group. At the 4^th-5^th week after stopping therapy, the number of growth follicles in the GnRH-a + NS group(58 ± 11 ) and the GnRH-a + CTX group (56 ± 16) recovered to almost the level of the control group (57 ±9, P 〉0. 05), but the number of all kinds of follicles declined significantly in the GnRH-ant + CTX group [ ( 195 ± 15 ), ( 36 ± 12 ) ] and the CTX group [ ( 212 ± 11 ), ( 36 ± 9 ) ] compared to the other four groups[(302±15)-(690±43),(44±12)-(58±11), P〈0.05]. Conclusion In rat model, GnRH- a prevents the ovarian function damage induced by CTX, but GnRH-ant does not show similar protective effect.
出处 《中华妇产科杂志》 CAS CSCD 北大核心 2007年第8期546-550,共5页 Chinese Journal of Obstetrics and Gynecology
基金 卫生部医疗机构2004-2006年临床学科重点项目(2004-468)
关键词 促性腺素释放激素 环磷酰胺 卵巢 大鼠 Gonadorelin Cyclophosphamide Ovary Rats
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参考文献9

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二级参考文献30

  • 1袁光文,沈铿,杨佳欣.促性腺激素释放激素激动剂对化疗损伤卵巢功能保护作用的实验研究[J].中华妇产科杂志,2005,40(10):666-669. 被引量:34
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