Artículo
Luthy, I.A.; Mormandi, E.; Aszpis, S.; Vázquez, S.M.; Maccallini, G.; Levalle, O.; Calandra, R.S. "Binding of 125I-prolactin to spermatozoa from normospermic and asthenospermic men" (1997) Journal of Endocrinological Investigation. 20(11):635-639
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Abstract:
Scatchard analysis of prolactin binding sites (PRL-BS) from ejaculated spermatozoa showed a single population of binding sites (apparent association constant: 2.51 ± 0.186 nmol/l-1) with 0.317 ± 0.0743 fmol/106 sperm binding sites. Different pools of spermatozoa were incubated with increasing concentrations of several hormones. There was a decrease in [125I]-oPRL binding with purified ovine prolactin (oPRL) and human growth hormone (hGH) which was not observed in the presence of synthetic ACTH and recombinant FSH, suggesting that binding was hormone specific. When the patient's samples were analyzed using the single point assay at saturation concentration, asthenospermic patients showed significantly higher concentration of binding sites compared to normospermic ones. Both groups of patients displayed similar PRL levels in seminal plasma measured by DELFIA. Moreover, individual values of PRL levels in seminal plasma did not correlate with PRL-BS concentrations. We thus conclude that [125I]-oPRL binding to ejaculated spermatozoa was hormone specific and with similar parameters as seen in other target tissues. PRL-BS concentration in asthenospermic patients was significantly higher than in normospermic but this was not due to different levels of PRL in seminal plasma.
Registro:
| Documento: | Artículo |
| Título: | Binding of 125I-prolactin to spermatozoa from normospermic and asthenospermic men |
| Autor: | Luthy, I.A.; Mormandi, E.; Aszpis, S.; Vázquez, S.M.; Maccallini, G.; Levalle, O.; Calandra, R.S. |
| Filiación: | Inst. de Biol. y Med. Experimental, Hospital Carlos G. Durand, Buenos Aires, Argentina Div. Endocrinología, Hospital Carlos G. Durand, Buenos Aires, Argentina Cátedra de Endocrinol., Fac. Ciencias Exactas, Universidad Nacional de la Plata, La Plata, Argentina Inst. de Biol. y Med. Experimental, Obligado 2490, (1428) Buenos Aires, Argentina |
| Palabras clave: | Asthenospermic; Normospermic; Prolactin receptor; Reproduction; Spermatozoa; human growth hormone; iodine 125; prolactin; recombinant follitropin; tetracosactide; corticotropin; diagnostic agent; follitropin; human growth hormone; prolactin; radioactive iodine; article; asthenospermia; binding site; clinical article; controlled study; hormone binding; human; human cell; male; Scatchard plot; seminal plasma; spermatozoon; animal; binding competition; chemistry; cohort analysis; comparative study; male infertility; metabolism; pathology; sheep; sperm; spermatozoon; Adrenocorticotropic Hormone; Animals; Binding Sites; Binding, Competitive; Cohort Studies; Follicle Stimulating Hormone; Human Growth Hormone; Humans; Infertility, Male; Iodine Radioisotopes; Male; Prolactin; Semen; Sheep; Spermatozoa |
| Año: | 1997 |
| Volumen: | 20 |
| Número: | 11 |
| Página de inicio: | 635 |
| Página de fin: | 639 |
| DOI: | http://dx.doi.org/10.1007/BF03348024 |
| Título revista: | Journal of Endocrinological Investigation |
| Título revista abreviado: | J. Endocrinol. Invest. |
| ISSN: | 03914097 |
| CODEN: | JEIND |
| CAS: | human growth hormone, 12629-01-5; iodine 125, 14158-31-7, 22822-81-7; prolactin, 12585-34-1, 50647-00-2, 9002-62-4; recombinant follitropin, 1219693-73-8, 146479-72-3, 1359819-75-2; tetracosactide, 16960-16-0; Adrenocorticotropic Hormone, 9002-60-2; Follicle Stimulating Hormone, 9002-68-0; Human Growth Hormone, 12629-01-5; Iodine Radioisotopes; Prolactin, 9002-62-4 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03914097_v20_n11_p635_Luthy |
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Citas:
---------- APA ----------
Luthy, I.A., Mormandi, E., Aszpis, S., Vázquez, S.M., Maccallini, G., Levalle, O. & Calandra, R.S. (1997) . Binding of 125I-prolactin to spermatozoa from normospermic and asthenospermic men. Journal of Endocrinological Investigation, 20(11), 635-639.http://dx.doi.org/10.1007/BF03348024
---------- CHICAGO ----------
Luthy, I.A., Mormandi, E., Aszpis, S., Vázquez, S.M., Maccallini, G., Levalle, O., et al. "Binding of 125I-prolactin to spermatozoa from normospermic and asthenospermic men" . Journal of Endocrinological Investigation 20, no. 11 (1997) : 635-639.http://dx.doi.org/10.1007/BF03348024
---------- MLA ----------
Luthy, I.A., Mormandi, E., Aszpis, S., Vázquez, S.M., Maccallini, G., Levalle, O., et al. "Binding of 125I-prolactin to spermatozoa from normospermic and asthenospermic men" . Journal of Endocrinological Investigation, vol. 20, no. 11, 1997, pp. 635-639.http://dx.doi.org/10.1007/BF03348024
---------- VANCOUVER ----------
Luthy, I.A., Mormandi, E., Aszpis, S., Vázquez, S.M., Maccallini, G., Levalle, O., et al. Binding of 125I-prolactin to spermatozoa from normospermic and asthenospermic men. J. Endocrinol. Invest. 1997;20(11):635-639.http://dx.doi.org/10.1007/BF03348024
