1988
DOI: 10.1095/biolreprod39.3.573
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Relationship between Concentrations of Immunoreactive Insulin-Like Growth Factor-I in Follicular Fluid and Various Biochemical Markers of Differentiation in Bovine Antral Follicles

Abstract: Three experiments were conducted to determine the relationship between concentrations of insulin-like growth factor-I (IGF-I) in ovarian follicular fluid and various biochemical markers of follicular differentiation in bovine follicles. In Experiment I, ovaries were removed on Days 7, 14, 28, 42, or 56 after parturition from a total of 21 cows. In Experiment II, ovaries of 31 cows were removed between Days 20 and 30 postpartum after 48 or 96 h of either saline (0.9% NaCl, 5 ml) or luteinizing hormone-releasing… Show more

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Cited by 97 publications
(45 citation statements)
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“…Recombinant IGF-I (Upstate, Millipore, Temecula, CA, USA) was iodinated using a chloramine T and sodium metabisulphite method as described previously (Spicer et al 1988, Echternkamp et al 1990. Recombinant human IGF-I (Upstate, Millipore, Temecula, CA, USA) was used to generate the standard curve.…”
Section: Metabolic and Hormonal Parametersmentioning
confidence: 99%
“…Recombinant IGF-I (Upstate, Millipore, Temecula, CA, USA) was iodinated using a chloramine T and sodium metabisulphite method as described previously (Spicer et al 1988, Echternkamp et al 1990. Recombinant human IGF-I (Upstate, Millipore, Temecula, CA, USA) was used to generate the standard curve.…”
Section: Metabolic and Hormonal Parametersmentioning
confidence: 99%
“…Estrogens can increase plasma IGF-I levels presumably via an increase in hepatic or follicular IGF-I [5]. Levels of IGF-I in follicular fluid were positively correlated with follicular diameter in antral follicles in cattle during the estrous cycle [17].…”
Section: Discussionmentioning
confidence: 94%
“…A variety of peptide growth factors including members of the transforming growth factor α (TGF-α) family including epidermal growth factor (EGF) [10], transforming growth factor β (TGF-β) family including activin [11] and inhibin [12], fibroblast growth factors (FGFs) [13], and insulin-like growth factor I [14,15] and II [15] (IGF-I and II) have been demonstrated to be present in FF. Among these growth factors, EGF [31,32], TGF-α [31], IGF-I [33,34], activin [35,36] and inhibin [35] have been reported to have beneficial effects on developmental competence of bovine oocytes.…”
Section: Discussionmentioning
confidence: 99%
“…FF contains a variety of peptide growth factors [10][11][12][13][14][15][16], some of which have been suggested to play a key role in the ability of the oocytes to undergo nuclear and cytoplasmic maturation (reviewed in [16]). Heparin affinity chromatography has been widely used for purification of peptide growth factors from biological fluid and conditioned media of cultured cells [17] because growth factors are generally classified into heparin -binding andnonbinding groups [18].…”
mentioning
confidence: 99%