Journal ArticleDOI
Ovarian follicular development and oocyte quality in anestrous ewes treated with melatonin, a controlled internal drug release (CIDR) device and follicle stimulating hormone
J. S. Luther,Dale A. Redmer,Lawrence P. Reynolds,Jong Tae Choi,Disha Pant,Chainarong Navanukraw,D. R. Arnold,Abraham N. Scheaffer,Pawel P. Borowicz,James D Kirsch,R.M. Weigl,K.C. Kraft,Anna T. Grazul-Bilska +12 more
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TLDR
When treatment with P4 commenced only 2 d before oocyte collection, rates of IVF were reduced in both experiments, and progestin treatment protocols used in ovine IVF programs should be carefully designed to minimize adverse effects on fertilization rates.About:
This article is published in Theriogenology.The article was published on 2005-05-01. It has received 20 citations till now. The article focuses on the topics: Controlled internal drug release.read more
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Journal ArticleDOI
Role of melatonin on production and preservation of gametes and embryos: a brief review.
Maria Helena Coelho Cruz,Cláudia Lima Verde Leal,Jurandir Ferreira da Cruz,Dun Xian Tan,Russel J. Reiter +4 more
TL;DR: Melatonin is an indoleamine synthesized from tryptophan in the pineal gland and other organs that operates as a hypothalamic-pituitary-gonadal axis modulator and regulates the waxing and waning of seasonal reproductive competence in photoperiodic mammals.
Journal ArticleDOI
Overfeeding and underfeeding have detrimental effects on oocyte quality measured by in vitro fertilization and early embryonic development in sheep
Anna T. Grazul-Bilska,Ewa Borowczyk,Jerzy J. Bilski,Lawrence P. Reynolds,Dale A. Redmer,Joel S. Caton,K. A. Vonnahme +6 more
TL;DR: The data show that inadequate feeding has a negative effect on oocyte quality which results in lower oocyte cleavage after IVF and morula and blastocyst formation; over feeding increased serum insulin and underfeeding increased serum E(2) but not T(3) or T(4).
Journal ArticleDOI
Exogenous melatonin positively influences follicular dynamics, oocyte developmental competence and blastocyst output in a goat model.
Fiammetta Berlinguer,Giovanni Giuseppe Leoni,Sara Succu,Antonio Spezzigu,Manuela Madeddu,Valentina Satta,Daniela Bebbere,I. Contreras-Solis,Antonio Gonzalez-Bulnes,Salvatore Naitana +9 more
TL;DR: In vivo melatonin treatment is beneficial for increasing ovarian follicle turnover and improving oocyte developmental competence and kinetics of the blastocyst.
Journal ArticleDOI
Effects of plane of nutrition on in vitro fertilization and early embryonic development in sheep.
Ewa Borowczyk,Joel S. Caton,Dale A. Redmer,Jerzy J. Bilski,R.M. Weigl,Kimberly A. Vonnahme,Pawel P. Borowicz,James D Kirsch,K.C. Kraft,Lawrence P. Reynolds,Anna T. Grazul-Bilska +10 more
TL;DR: Data indicate that undernutrition of donor ewes, resulting in lower BW and BCS, has a negative effect on oocyte quality, which results in lower rates of cleavage and blastocyst formation.
Journal ArticleDOI
Morphology and function of cryopreserved whole ovine ovaries after heterotopic autotransplantation
Anna T. Grazul-Bilska,Jashoman Banerjee,Ilker Yazici,Ewa Borowczyk,Jerzy J. Bilski,Rakesh Sharma,Maria Siemionov,Tommaso Falcone +7 more
TL;DR: Successful autotransplantation of a portion of frozen/thawed ovaries manifested by restoration of selected ovarian function is demonstrated including in vitro maturation of collected oocytes, presence of follicles from several stages of folliculogenesis and blood vessels expressing specific markers of vascularization, and proliferation and apoptosis of ovarian cells.
References
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Lamb birth weight is affected by culture system utilized during in vitro pre-elongation development of ovine embryos.
TL;DR: The data suggest that different culture conditions can produce embryos with differing morphology, apparent chemical composition, and rate of development, resulting in lambs with differing gestation length and birth weight.
Controlled reproduction in sheep and goats.
TL;DR: Introduction to controlled reproduction in sheep the ewe's oestrous cycle and seasonal breeding activity artificial control of oestrus and ovulation fixed-time sheep artificial insemination advancing the sheep breeding season.
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The role of nitric oxide in oocyte meiotic maturation and ovulation: meiotic abnormalities of endothelial nitric oxide synthase knock-out mouse oocytes
TL;DR: The ovarian defects observed in the eNOS knock-out mice suggest that eN OS-derived NO is a modulator of oocyte meiotic maturation, and a role for NO in the ovulatory process is supported.
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The effect of melatonin on in vitro fertilization and embryo development in mice.
TL;DR: It is demonstrated that melatonin supports fertilization and early embryo development after in vitro fertilization.
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Oocyte morphology in dominant and subordinate follicles.
TL;DR: The structure of oocytes aspirated from the dominant and its subordinate follicles was investigated from the achievement of follicular dominance to ovulation in heifers and cows induced by injection of cloprostenol.