Abstract:
:Clumps of corona cells were separated from oocytes at the moment of fertilization control and were subsequently processed and cut into 1-mu sections to study their general morphologic patterns. This study revealed an extensive phagocytosis of spermatozoa by corona cells. Clumps of mural granulosa cells of comparable size, recovered from follicular aspirates and incubated with spermatozoa, did not show the same extent of phagocytotic activity. The different nature of extracellular material could prevent penetration of the granulosa cell masses and thus a close contact between spermatozoa and granulosa cells. In our limited number of studied cases there was no indication of an aberrant phagocytosis pattern in coronas from polyspermic eggs or from oocytes that did not become fertilized. On the other hand, sperm penetration, as revealed by the sperm/corona ratio, was significantly higher in coronas derived from polyspermic eggs compared with those from unfertilized oocytes.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Pijnenborg R,Gordts S,Ongkowidjojo R,Brosens Idoi
10.1111/j.1749-6632.1985.tb37534.xsubject
Has Abstractpub_date
1985-01-01 00:00:00pages
310-7eissn
0077-8923issn
1749-6632journal_volume
442pub_type
杂志文章abstract::Recent controversies in the existence of saturable binding of general anesthetics in brain tissues prompted a careful examination of specific binding of anesthetics to neural receptors. We examined the binding of both local and general anesthetics using electron spin resonance and radioligand criteria. Our results sug...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:1993-05-28 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:2000-05-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:1999-06-29 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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更新日期:1999-11-18 00:00:00
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1995.tb27544.x
更新日期:1995-05-25 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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abstract::Sponsored by the New York Academy of Sciences and with support from the National Institute of Mental Health, the Life Technologies Foundation, and the Josiah Macy Jr. Foundation, "Advancing Drug Discovery for Schizophrenia" was held March 9-11 at the New York Academy of Sciences in New York City. The meeting, comprisi...
journal_title:Annals of the New York Academy of Sciences
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更新日期:2011-10-01 00:00:00
abstract::A majority of incidentally found adrenal tumors derive from the adrenal cortex. The aim of our study was evaluation of the incidence of chromaffin tumors in a group of 1,111 patients with adrenal incidentalomas. In this group there were 803 women and 308 men, aged 10-87 years. Clinical examination, imaging studies (ul...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:2006-08-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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更新日期:2006-09-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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abstract::The therapeutic value of thymectomy for myasthenia is still questioned although it retains an important place among management modalities that strive for sustained remission. Questions derive from uncertainty as to appropriate timing, variable extent of resection and quantitation of response. Forty-seven patients, fol...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:1981-01-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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更新日期:1997-09-20 00:00:00
abstract::Gene therapy for beta-globinopathies, particularly beta-thalassemia and sickle cell anemia, hold much promise for the future, as a one time cure for these common and debilitating disorders. Correction of the beta-globinopathies using lentivirus vectors (LV) carrying the beta- or gamma-globin genes and elements of the ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:2010-08-01 00:00:00