{"title":"促性腺激素和性腺激素对鲈鱼甲状腺核酸的影响。","authors":"P Chakraborti, S Bhattacharya","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Climbing perch thyroidal RNA content fluctuated in different phases of the reproductive cycle, highest at spawning (36.08 +/- 3.69 micrograms/mg tissue) and lowest at postspawning (6.88 +/- 0.76 microgram/mg tissue) whereas DNA remained unaltered. Treatment of intact perch with salmon gonadotropin (SG-G100) or ovine LH for 15 days significantly stimulated thyroidal RNA content. Stimulatory effect of SG-G100 was greater (p less than 0.001) than LH (p less than 0.005). FSH had no such effect. Gonadotropin (GtH) treatment could not alter thyroidal DNA. Ovarian steroids, 17 beta-estradiol (E2) and estrone (E1) remarkably elicited RNA content. Ovariectomy of perch caused striking depletion of RNA. Administration of GtH to ovariectomized perch had no effect on thyroid RNA but E1 and E2 supplementation resulted in significant stimulation in comparison to ovariectomized control. Findings indicate that GtH mediated its stimulatory effect on perch thyroidal RNA via the release of ovarian steroids.</p>","PeriodicalId":11605,"journal":{"name":"Endokrinologie","volume":"80 2","pages":"213-9"},"PeriodicalIF":0.0000,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of gonadotropins and gonadal hormones on climbing perch thyroid nucleic acids.\",\"authors\":\"P Chakraborti, S Bhattacharya\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Climbing perch thyroidal RNA content fluctuated in different phases of the reproductive cycle, highest at spawning (36.08 +/- 3.69 micrograms/mg tissue) and lowest at postspawning (6.88 +/- 0.76 microgram/mg tissue) whereas DNA remained unaltered. Treatment of intact perch with salmon gonadotropin (SG-G100) or ovine LH for 15 days significantly stimulated thyroidal RNA content. Stimulatory effect of SG-G100 was greater (p less than 0.001) than LH (p less than 0.005). FSH had no such effect. Gonadotropin (GtH) treatment could not alter thyroidal DNA. Ovarian steroids, 17 beta-estradiol (E2) and estrone (E1) remarkably elicited RNA content. Ovariectomy of perch caused striking depletion of RNA. Administration of GtH to ovariectomized perch had no effect on thyroid RNA but E1 and E2 supplementation resulted in significant stimulation in comparison to ovariectomized control. Findings indicate that GtH mediated its stimulatory effect on perch thyroidal RNA via the release of ovarian steroids.</p>\",\"PeriodicalId\":11605,\"journal\":{\"name\":\"Endokrinologie\",\"volume\":\"80 2\",\"pages\":\"213-9\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1982-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Endokrinologie\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Endokrinologie","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
鲈鱼甲状腺RNA含量在繁殖周期的不同阶段有所波动，产卵期最高(36.08 +/- 3.69 μ g /mg组织)，产卵后最低(6.88 +/- 0.76 μ g /mg组织)，而DNA含量保持不变。用鲑鱼促性腺激素(SG-G100)或羊LH处理完整鲈鱼15天，显著刺激甲状腺RNA含量。SG-G100的刺激作用大于LH (p < 0.001)。FSH没有这种效果。促性腺激素(GtH)治疗不能改变甲状腺DNA。卵巢类固醇、17 -雌二醇(E2)和雌酮(E1)显著诱导RNA含量。鲈鱼卵巢切除导致RNA显著减少。在去卵巢鲈鱼中添加GtH对甲状腺RNA没有影响，但与去卵巢对照相比，添加E1和E2可显著刺激甲状腺RNA。结果表明，GtH通过释放卵巢类固醇介导其对鲈鱼甲状腺RNA的刺激作用。
Influence of gonadotropins and gonadal hormones on climbing perch thyroid nucleic acids.
Climbing perch thyroidal RNA content fluctuated in different phases of the reproductive cycle, highest at spawning (36.08 +/- 3.69 micrograms/mg tissue) and lowest at postspawning (6.88 +/- 0.76 microgram/mg tissue) whereas DNA remained unaltered. Treatment of intact perch with salmon gonadotropin (SG-G100) or ovine LH for 15 days significantly stimulated thyroidal RNA content. Stimulatory effect of SG-G100 was greater (p less than 0.001) than LH (p less than 0.005). FSH had no such effect. Gonadotropin (GtH) treatment could not alter thyroidal DNA. Ovarian steroids, 17 beta-estradiol (E2) and estrone (E1) remarkably elicited RNA content. Ovariectomy of perch caused striking depletion of RNA. Administration of GtH to ovariectomized perch had no effect on thyroid RNA but E1 and E2 supplementation resulted in significant stimulation in comparison to ovariectomized control. Findings indicate that GtH mediated its stimulatory effect on perch thyroidal RNA via the release of ovarian steroids.
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