sodium-ethylxanthate and Infertility--Male
sodium-ethylxanthate has been researched along with Infertility--Male* in 11 studies
Reviews
1 review(s) available for sodium-ethylxanthate and Infertility--Male
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A conflict between two sexes, females and hermaphrodites.
We have reviewed models dealing with the maintenance of male-sterility under different modes of inheritance. For females to remain among hermaphrodites requires cytoplasmic information determining male-sterility and nuclear information restoring male-fertility. Such a nuclear-cytoplasmic polymorphism can be maintained at equilibrium given certain assumptions. However this equilibrium result may be irrelevant because gynodioecious populations are usually not at equilibrium, and because founder effects may give rise to high frequencies of females, due possibly to the fact that populations are often very different from one another genetically. The genetic structure of such a species depends on the frequency of females. Females are obligate outbreeders and usually produce more seeds than hermaphrodites. These two traits are beneficial to a group where females are present, in terms of effective size and seed output, although they are not, themselves, causes of the occurrence of females. Nuclear-cytoplasmic gynodioecy may lead to dioecy. Topics: Animals; Biological Evolution; Disorders of Sex Development; Female; Heterozygote; Infertility, Male; Male; Models, Genetic; Sex | 1987 |
Other Studies
10 other study(ies) available for sodium-ethylxanthate and Infertility--Male
Article | Year |
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Genetic sex separation of the malaria vector, Anopheles arabiensis, by exposing eggs to dieldrin.
The sterile insect technique (SIT) has been used with success for suppressing or eliminating important insect pests of agricultural or veterinary importance. In order to develop SIT for mosquitoes, female elimination prior to release is essential as they are the disease-transmitting sex. A genetic sexing strain (GSS) of Anopheles arabiensis was created based on resistance to dieldrin, and methods of sex separation at the egg stage were developed. The use of this strain for SIT will require sexually sterile males: useful radiation doses for this purpose were determined for pupae and adults.. For the creation of the sexing strain, dieldrin-resistant males were irradiated with 40 Gy using a 60Co source and were subsequently crossed to homozygous susceptible virgin females. Individual families were screened for semi-sterility and for male resistance to dieldrin. For sex separation, eggs of a resulting GSS, ANO IPCL1, were exposed to varying concentrations of dieldrin for different durations. Percent hatch, larval survival, and male and female emergence were recorded. Radiation induced sterility was determined following adult and pupa exposure to gamma rays at 0-105 Gy. Mortality induced by dieldrin treatment, and levels of sterility post radiation were investigated.. ANO IPCL1 contains a complex chromosome aberration that pseudo-links the male-determining Y chromosome and dieldrin resistance, conferring high natural semi-sterility. Exposure of eggs to 2, 3, and 4 ppm dieldrin solutions resulted in complete female elimination without a significant decrease of male emergence compared to the controls. A dose of 75 Gy reduced the fertility to 3.8 and 6.9% when males were irradiated as pupae or adults respectively, but the proportions of progeny of these males reaching adulthood were 0.6 and 1.5% respectively. The GSS ANO IPCL1 was shown to be a suitable strain for further testing for SIT though high semi-sterility is a disadvantage for mass rearing. Topics: Animals; Anopheles; Dieldrin; Drug Resistance; Female; Gamma Rays; Infertility, Male; Larva; Male; Mosquito Control; Ovum; Pupa; Sex; Sterilization; Survival Analysis | 2012 |
The future of sex.
Topics: Biological Evolution; DNA Damage; Evolution, Molecular; Fertility; Humans; Infertility, Male; Male; Mutation; Oxidative Stress; Sex; Spermatozoa; Y Chromosome | 2002 |
Does hybrid lethality depend on sex or genotype?
Topics: Animals; Dosage Compensation, Genetic; Drosophila melanogaster; Female; Genotype; Humans; Hybridization, Genetic; Infertility, Female; Infertility, Male; Male; Sex; Sex Determination Processes | 1999 |
Sexual function and clinical features of patients with Klinefelter's syndrome with the chief complaint of male infertility.
In this report, we present the overall sexual function and clinical features of patients with Klinefelter's syndrome with the chief complaint of male infertility. The study consisted of 40 patients with a control group of 55 infertile non-azoospermic males with a normal 46,XY karyotype who visited the Reproduction Center of Toho University Hospital during the 5.5-year period between January 1991 and June 1996 with the chief complaint of male infertility. Among the 40 patients with Klinefelter's syndrome, 38 cases were pure 47,XXY, one case was 47,XXY with a pericentric inversion of chromosome 9 and one case was a mosaic of 46,XY/47,XXY(2:28). Thirty-nine of these 40 patients were azoospermic and one (47,XXY) had severe oligoasthenozoospermia. The sexual function of the patients was evaluated according to their responses to a preliminary questionnaire devised by our department. There was no significant difference in the frequency of sexual function disturbances between the patients with Klinefelter's syndrome and the control group (67.5% vs. 60.0%; chi 2 analysis; p = 0.454). The mean frequency of sexual intercourse per month in the patients with Klinefelter's syndrome was significantly higher than in the control group (4.4 +/- 2.8 vs 3.3 +/- 1.6: Welch's t-test, p < 0.05). A possible explanation for this variation may lie in the fact that many of these patients were diagnosed with azoospermia poor to the administration of the questionnaire and may have wished to continue to have relations as a couple. Topics: Adult; Chromosome Inversion; Chromosomes, Human, Pair 9; Ejaculation; Follicle Stimulating Hormone; Humans; Infertility, Male; Karyotyping; Klinefelter Syndrome; Libido; Luteinizing Hormone; Male; Orgasm; Penile Erection; Prolactin; Semen; Sex; Sexual Behavior; Surveys and Questionnaires; Testis; Testosterone | 1997 |
Reproductive and sexual health in adolescents with cystic fibrosis.
Topics: Adolescent; Adolescent Health Services; Communication; Cystic Fibrosis; Female; Humans; Infertility, Female; Infertility, Male; Male; Reproductive Medicine; Sex | 1996 |
Effect of treatment on fertility and sexual function in males with metastatic nonseminomatous germ cell tumors of testis.
The effects of therapy on the sexual ability and fertility of sixty-seven patients with nonseminomatous germ cell tumors of the testis were analyzed. Ten of 38 patients had subfertile sperm counts before therapy. Normal ejaculation was preserved in only 7/61 patients who underwent retroperitoneal lymph node dissection. In five of these patients, sperm analysis was done after chemotherapy; all had complete azoospermia. An effort to restore ejaculation with imipramine yielded only minimal response in 4/9 patients who received this drug. No major long-term effects on the libido were observed. Topics: Adolescent; Adult; Antineoplastic Combined Chemotherapy Protocols; Bleomycin; Chlorambucil; Cisplatin; Cyclophosphamide; Dactinomycin; Doxorubicin; Ejaculation; Humans; Imipramine; Infertility, Male; Libido; Lymph Node Excision; Male; Middle Aged; Neoplasms, Germ Cell and Embryonal; Oligospermia; Sex; Testicular Neoplasms; Vinblastine | 1985 |
Testicular and sexual function in adults with prune belly syndrome.
Testicular and sexual function was investigated in 9 patients between 16 and 28 years old with prune belly syndrome. At personal interview all patients claimed to experience normal erections and orgasm but 7 had retrograde ejaculation. Examination showed a normally developed male habitus. Orchiopexies had been performed in late childhood or adolescence. Two patients were anorchic and the surviving testicles were small in the remaining 7. Serum testosterone was low in 1 patient and normal in 6 but at the expense of high luteinizing hormone levels in 4. All patients had a high serum follicle-stimulating hormone level, reflecting the azoospermia found in 5 patients tested. Three biopsies from atypical cases showed poor histological findings but 2 revealed early spermatogenesis. The testes in patients with prune belly syndrome are similar to undescended testes in otherwise normal men. Late orchiopexy produces sexually active but infertile men. Topics: Adolescent; Adult; Ejaculation; Follicle Stimulating Hormone; Humans; Infertility, Male; Luteinizing Hormone; Male; Oligospermia; Orgasm; Penis; Prune Belly Syndrome; Sex; Testis; Testosterone | 1985 |
[Sexual functions in the diabetic male].
Topics: Diabetes Mellitus; Female; Humans; Infertility, Male; Male; Sex; Sexual Dysfunction, Physiological | 1982 |
Sexual function following high retroperitoneal lymphadenectomy.
The mechanism of infertility after high retroperitoneal lymphadenectomy was studied in 36 patients. In 35 patients infertility occurred because of unavoidable seminal vesicular and ductus deferential sympathetic denervation, with consequent aspermia. Potency and orgasm were unchanged in all patients and there was no evidence of retrograde ejaculation. The findings suggest that sympatholytic drugs be studied for possible application as reversible male contraceptives. Topics: Denervation; Ejaculation; Female; Humans; Infertility, Male; Lymph Node Excision; Male; Oligospermia; Pregnancy; Retroperitoneal Space; Seminal Vesicles; Sex; Testicular Neoplasms; Vas Deferens | 1975 |
THE ADRENO-GENITAL SYNDROME AND CONSTITUTIONAL DISORDERS.
Topics: Adrenal Cortex Hormones; Adrenal Hyperplasia, Congenital; Adrenogenital Syndrome; Cholesterol; Enzymes; Female; Hydrocortisone; Hypersensitivity; Infertility; Infertility, Male; Metabolism; Pre-Eclampsia; Pregnancy; Sex; Urine | 1963 |