Results 61 to 70 of about 42,192 (244)
Cancer Treatment and Research CommunicationsIntroduction: Curcumin (Cur), a yellow polyphenolic compound derived from the rhizome of turmeric, exhibits potent chemopreventive and chemotherapeutic properties.
Marziyeh Alizadeh Zarei +4 more
doaj +1 more source
Piwi1 is essential for gametogenesis in mollusk Chlamys farreri [PDF]
PeerJ, 2017 Piwi (P-element induced wimpy testis) is an important gene involved in stem cell maintenance and gametogenesis in vertebrates. However, in most invertebrates, especially mollusks, the function of Piwi during gametogenesis remains largely unclear.
Xiaoshi Ma +6 more
doaj +2 more sources
Epigenetic Modifications during Angiosperm Gametogenesis [PDF]
Frontiers in Plant Science, 2012 Angiosperms do not contain a distinct germline, but rather develop gametes from gametophyte initials that undergo cell division. These gametes contain cells that give rise to an endosperm and the embryo. DNA methylation is decreased in the vegetative nucleus (VN) and central cell nuclei (CCN) resulting in expression of transposable elements (TEs).
Migicovsky, Zoë, Kovalchuk, Igor
openaire +3 more sources
Reproductive Challenges of the Ageing Female: A Comprehensive Narrative Review
BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.ABSTRACT Changes in societal norms over the last few decades have resulted in novel family planning trends, notably delayed childbearing and increased maternal age at the birth of the first child. Despite advances in reproductive medicine, ageing poses significant challenges.
Sofia Bitzika +6 more
wiley +1 more source
The life cycles of cryptogams [PDF]
, 1991 Meiosis and karyogamy are recognized as control points in the life cycle of cryptogams. The control of meiosis is evidently complex and in yeast, and by analogy in all cryptogams, involves progressive gene activation.
Bell, Peter R.
core +2 more sources
Zygoparity and sex steroid hormone profiles in bluemouth Helicolenus dactylopterus [PDF]
, 2017 Two hundred and seven individuals (103 females and 104 males) of bluemouth Helicolenus dactylopterus (Scorpaeniformes, Sebastidae), a commercially important deep-water species with an unusual reproductive strategy, from the eastern Atlantic Ocean ranging
Barcellos +30 more
core +1 more source
Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders
Andrology, EarlyView.Abstract The hypothalamic–pituitary–gonadal axis is regulated by the gonadotropin‐releasing hormone pulse generator in the hypothalamus. This is comprised of neurons that secrete kisspeptin in a pulsatile manner to stimulate the release of GnRH, and, in turn, downstream gonadotropins from the pituitary gland, and subsequently sex steroids and ...
Aureliane C. S. Pierret +5 more
wiley +1 more source
Scientia Marina, 2001 The structure of the ovaries and testes of Nausithoe aurea, reared in the laboratory, is described to update the knowledge of coronate scyphomedusae gametogenesis and early development. The testis is similar to those of other scyphozoans.
André C. Morandini +1 more
doaj +1 more source
The use of deidentified organ donor testes for research
Andrology, EarlyView.Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova +4 more
wiley +1 more source
Fiyz̤, 2019 Background: Ovarian tissue cryopreservation is a way of preserving fertility in women with cancer and premature ovarian failure. Maintenance of follicular reserve is mandatory after ovary cryopreservation. This study was performed to determine the effect
Shirazi-Tehrani A +3 more
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