EFFECTS OF TESTOSTERONE AND FOLLICLE-STIMULATING HORMONE ON SPERMATOGENESIS IN ADULT MICE DURING TREATMENT WITH OESTRADIOL

1974 ◽  
Vol 60 (1) ◽  
pp. 37-45 ◽  
Author(s):  
A. G. DAVIES ◽  
M. COUROT ◽  
P. GRESHAM
Keyword(s):  
Dose Level ◽  
Adult Male ◽  
Follicle Stimulating Hormone ◽  
Male Mice ◽  
Human Pituitary ◽  
Oestradiol Treatment ◽  
Adult Mice ◽  
Stimulating Hormone

SUMMARY Adult male mice were treated with oestradiol for 10 weeks and for the last half of this period they were given relatively large daily doses of testosterone and highly purified human pituitary follicle-stimulating hormone (FSH), singly and in combination. Oestradiol treatment reduced and testosterone restored the yields of mature (step 16) spermatids from round (step 7) spermatids, round spermatids from pachytene primary spermatocytes and pachytene from preleptotene spermatocytes. At the dose level used FSH was not effective alone but appeared to augment the effect of testosterone on the yield of round spermatids from preleptotene spermatocytes.

scholarly journals Specific transgenerational imprinting effects of the endocrine disruptor methoxychlor on male gametes

Reproduction ◽  
2011 ◽  
Vol 141 (2) ◽  
pp. 207-216 ◽  
Author(s):  
Christelle Stouder ◽  
Ariane Paoloni-Giacobino
Keyword(s):  
Adult Male ◽  
Endocrine Disrupting Chemicals ◽  
Methylation Pattern ◽  
Imprinted Genes ◽  
Male Mice ◽  
Systematic Analysis ◽  
Adult Mice ◽  
Male Gametes ◽  
Pregnant Mice ◽  
Methylation Defects

Endocrine-disrupting chemicals (EDCs), among which methoxychlor (MXC), have been reported to affect the male reproductive system. This study evaluates the possible deleterious effects of MXC on imprinted genes. After administration of the chemical in adult male mice or in pregnant mice we analyzed by pyrosequencing possible methylation defects in two paternally imprinted (H19 and Meg3 (Gtl2)) and three maternally imprinted (Mest (Peg1), Snrpn, and Peg3) genes in the sperm and in the tail, liver, and skeletal muscle DNAs of the adult male mice and of the male offspring. MXC treatment of adult mice decreased the percentages of methylated CpGs of Meg3 and increased those of Mest, Snrpn, and Peg3 in the sperm DNA. MXC treatment of pregnant mice decreased the mean sperm concentrations by 30% and altered the methylation pattern of all the imprinted genes tested in the F1 offspring. In the latter case, MXC effects were transgenerational but disappeared gradually from F1 to F3. MXC did not affect imprinting in the somatic cells, suggesting that it exerts its damaging effects via the process of reprogramming that is unique to gamete development. A systematic analysis at the CpG level showed a heterogeneity in the CpG sensitivity to MXC. This observation suggests that not only DNA methylation but also other epigenetic modifications can explain the transgenerational effects of MXC. The reported effects of EDCs on human male spermatogenesis might be mediated by complex imprinting alterations analogous to those described in this study.

Therapeutic use of gonadotrophins and clomiphene

1969 ◽  
Vol 7 (9) ◽  
pp. 33-35
Keyword(s):  
Pregnant Women ◽  
Follicle Stimulating Hormone ◽  
Therapeutic Use ◽  
Chorionic Gonadotrophin ◽  
Human Chorionic Gonadotrophin ◽  
Human Pituitary ◽  
Synthetic Compound ◽  
Pituitary Glands ◽  
Post Menopausal ◽  
Stimulating Hormone

The three substances now used to stimulate the gonads in infertility are human follicle stimulating hormone (HFSH) obtained mainly from post-menopausal urine, but also from human pituitary glands, human chorionic gonadotrophin (HCG) extracted from the urine of pregnant women, and clomiphene (Clomid - Merrell), a synthetic compound which we reviewed in 1967.1

scholarly journals Maintenance of Sexual Immaturity in Male Mice and Bucks by Immunization Against N-Terminal Peptides of the Follicle-Stimulating Hormone Receptor1

2003 ◽  
Vol 68 (1) ◽  
pp. 323-327 ◽  
Author(s):  
Latifa Abdennebi ◽  
E. Ying Chun ◽  
Hélène Jammes ◽  
De Wei ◽  
Jean Jacques Remy
Keyword(s):  
Follicle Stimulating Hormone ◽  
Male Mice ◽  
Stimulating Hormone

OBSERVATIONS ON THE ASSAY OF HUMAN URINARY FOLLICLE-STIMULATING HORMONE BY THE AUGMENTATION TEST IN MICE

1966 ◽  
Vol 35 (2) ◽  
pp. 199-206 ◽  
Author(s):  
P. S. BROWN ◽  
M. WELLS
Keyword(s):  
No Value ◽  
Follicle Stimulating Hormone ◽  
Chorionic Gonadotrophin ◽  
Human Chorionic Gonadotrophin ◽  
High Potency ◽  
Human Pituitary ◽  
Ovarian Weight ◽  
C3h Mice ◽  
C57bl Mice ◽  
Stimulating Hormone

SUMMARY The follicle-stimulating hormone (FSH) content of urinary gonadotrophic extracts was assayed by its effect on the ovarian weight of immature mice when given in conjunction with 40 i.u. human chorionic gonadotrophin. About three-quarters of all routine assays gave values of λ between 0·15 and 0·30. Precision was slightly increased when the material was given in three rather than in five injections. Correction of ovarian weight for body weight was either invalid or of no value in reducing variance. Removal of between-litter variance increased precision considerably. Mice of three randomly bred colonies were all satisfactory, and inbred C57BL mice were also suitable for the assay. C3H mice were less sensitive. The efficiency of different methods of extracting FSH from urine was examined. The method of Johnsen (1958) using precipitation with tannic acid was considered the most satisfactory and gave extracts of high potency and low bulk. Limited experiments in which purified human pituitary FSH was assayed with and without added luteinizing hormone, gave results compatible with the assumption that the method is specific for FSH.

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