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List of works by Leon J Spicer

2-Hydroxyestradiol modulates a facilitative action of catecholamines on porcine granulosa cells

scientific article published on 01 June 1987

2-hydroxyestradiol enhanced progesterone production by porcine granulosa cells: dependence on de novo cholesterol synthesis and stimulation of cholesterol side-chain cleavage activity and cytochrome P450scc messenger ribonucleic acid levels.

scientific article published on December 1990

A new synthesis of 6-phenyl-2,3,5,6-tetrahydroimidazo[2,1-b]thiazole

scientific article published on 01 April 1968

Adipose obese gene product, leptin, inhibits bovine ovarian thecal cell steroidogenesis.

scientific article

Administration of porcine somatotropin by a sustained-release implant: effect on follicular growth, concentrations of steroids and insulin-like growth factor I, and insulin-like growth factor binding protein activity in follicular fluid of control,

scientific article published on 01 September 1994

Age-associated changes in secretory patterns of growth hormone, prolactin and thyrotropin and the hormonal responses to thyrotropin-releasing hormone in rams

scientific article published on 01 July 1981

Anovulation in postpartum suckled beef cows. I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid

scientific article published in March 1986

Anovulation in postpartum suckled beef cows. II. Associations among binding of 125I-labeled gonadotropins to granulosa and thecal cells, and concentrations of steroids in serum and various sized ovarian follicles

scientific article published on 01 March 1986

Body energy reserves influence the onset of luteal activity after early weaning of beef cows

scientific article published on 01 October 1994

CI628 inhibits follicle-stimulating hormone (FSH)-induced increases in FSH receptors of the rat ovary: requirement of estradiol for FSH action

scientific article published on 01 February 1985

Changes in brain ribonuclease (BRB) messenger RNA in granulosa cells (GCs) of dominant vs subordinate ovarian follicles of cattle and the regulation of BRB gene expression in bovine GCs.

scientific article published on 31 October 2015

Changes in fibroblast growth factor 9 mRNA in granulosa and theca cells during ovarian follicular growth in dairy cattle

scientific article published on 7 September 2016

Changes in follicular fluid steroids, insulin-like growth factors (IGF) and IGF-binding protein concentration, and proteolytic activity during equine follicular development

scientific article published in January 2002

Changes in serum LH, progesterone, and specific binding of 125I-hCG to luteal cells during regression and development of bovine corpora lutea

scientific article published on 01 November 1981

Characterization of formaldehyde exposure resulting from the use of four professional hair straightening products.

scientific article published in November 2011

Comparison of surface diameters and dissected diameters of bovine ovarian follicles

scientific article published on 01 January 1987

Concentrations of insulin-like growth factor I and steroids in follicular fluid of preovulatory bovine ovarian follicles: effect of daily injections of a growth hormone-releasing factor analog and(or) thyrotropin-releasing hormone

scientific article published on 01 March 1991

Concentrations of insulin-like growth factor-I in adult male white-tailed deer (Odocoileus virginianus): associations with serum testosterone, morphometrics and age during and after the breeding season

scientific article published in July 2001

Concentrations of insulin-like growth factor-I in blood and ovarian follicular fluid of cattle selected for twins

scientific article published in July 1990

Concentrations of insulin-like growth factor-I, estradiol and progesterone in follicular fluid of ovarian follicles during early pregnancy in cattle

scientific article published on 01 March 1992

Dexamethasone influences endocrine and ovarian function in dairy cattle

scientific article published in September 2001

Direct effects of the algal toxin, domoic acid, on ovarian function: Bovine granulosa and theca cells as an in vitro model

scientific article published on 18 December 2014

Effect of calf isolation on follicular wave dynamics, gonadotropin and metabolic hormone changes, and interval to first ovulation in beef cows fed either of two energy levels postpartum

scientific article published on 01 October 1998

Effect of days after calving on insulin-like growth factor-I, insulin-like growth factor binding proteins, progesterone, androstenedione, estradiol, and aromatase mRNA in dominant follicles of postpartum beef cows

scientific article published on 29 September 2007

Effect of dietary intake on concentrations of insulin-like growth factor-I in plasma and follicular fluid, and ovarian function in heifers

scientific article published on 01 July 1991

Effect of dietary intake on pattern of growth of dominant follicles during the oestrous cycle in beef heifers

scientific article published on 01 July 1991

Effect of exogenous estradiol on plasma concentrations of somatotropin, insulin-like growth factor-I, insulin-like growth factor binding protein activity, and metabolites in ovariectomized Angus and Brahman cows

scientific article published in November 1997

Effect of exogenous insulin on plasma and follicular insulin-like growth factor I, insulin-like growth factor binding protein activity, follicular oestradiol and progesterone, and follicular growth in superovulated Angus and Brahman cows

scientific article published on 01 November 1994

Effect of follicle size on in vitro production of steroids and insulin-like growth factor (IGF)-I, IGF-II, and the IGF-binding proteins by equine ovarian granulosa cells

scientific article published in June 2002

Effect of growth hormone administration to mature miniature Brahman cattle treated with or without insulin on circulating concentrations of insulin-like growth factor-I and other metabolic hormones and metabolites

scientific article published on 04 March 2011

Effect of insulin-like growth factors (IGF), FSH, and leptin on IGF-binding-protein mRNA expression in bovine granulosa and theca cells: quantitative detection by real-time PCR

scientific article published on 01 December 2004

Effect of nutrition and superovulation on oocyte morphology, follicular fluid composition and systemic hormone concentrations in ewes

scientific article published in March 2000

Effect of plasma from cyclic versus nutritionally induced anovulatory beef heifers on proliferation of granulosa cells in vitro

scientific article published on 15 August 2007

Effect of porcine somatotropin on number of granulosa cell luteinizing hormone/human chorionic gonadotropin receptors, oocyte viability, and concentrations of steroids and insulin-like growth factors I and II in follicular fluid of lean and obese gi

scientific article published in October 1992

Effect of resistin on granulosa and theca cell function in cattle.

scientific article published on 14 January 2011

Effects of Fusarium mycotoxins on steroid production by porcine granulosa cells

scientific article published on 23 June 2007

Effects of a trichothecene, T-2 toxin, on proliferation and steroid production by porcine granulosa cells.

scientific article

Effects of angiogenin on granulosa and theca cell function in cattle

scientific article published on 20 October 2016

Effects of basic fibroblast growth factor and heparin on follicle-stimulating hormone-induced steroidogenesis by bovine granulosa cells

scientific article published on 01 October 1994

Effects of body condition score at parturition and postpartum protein supplementation on estrous behavior and size of the dominant follicle in beef cows

scientific article published on 23 May 2008

Effects of cytokines on FSH-induced estradiol production by bovine granulosa cells in vitro: dependence on size of follicle

scientific article published in January 1994

Effects of estradiol on bovine thecal cell function in vitro: dependence on insulin and gonadotropins.

scientific article published on July 2005

Effects of feeding propionibacteria to dairy cows on milk yield, milk components, and reproduction

scientific article published in January 2006

Effects of feeding two levels of propionibacteria to dairy cows on plasma hormones and metabolites

scientific article published on 17 January 2007

Effects of feeding yeast and propionibacteria to dairy cows on milk yield and components, and reproduction*.

scientific article published in April 2008

Effects of fibroblast growth factor 9 on steroidogenesis and control of FGFR2IIIc mRNA in porcine granulosa cells.

scientific article published on 14 January 2014

Effects of fumonisin B1 alone and combined with deoxynivalenol or zearalenone on porcine granulosa cell proliferation and steroid production

scientific article published on 30 January 2014

Effects of growth hormone-releasing factor and vasoactive intestinal peptide on proliferation and steroidogenesis of bovine granulosa cells

scientific article published on January 1, 1992

Effects of growth hormone-releasing factor and(or) thyrotropin-releasing hormone on growth, feed efficiency, carcass characteristics, and blood hormones and metabolites in beef heifers

scientific article published on 01 September 1993

Effects of growth rate on carcass composition and lipid partitioning at puberty and growth hormone, insulin-like growth factor I, insulin, and metabolites before puberty in beef heifers

scientific article published on 01 August 1995

Effects of inert fat on energy balance, plasma concentrations of hormones, and reproduction in dairy cows

scientific article published on 01 September 1993

Effects of insulin, insulin-like growth factor I, and gonadotropins on bovine granulosa cell proliferation, progesterone production, estradiol production, and(or) insulin-like growth factor I production in vitro

scientific article published on 01 May 1993

Effects of insulin-like growth factor I and insulin on proliferation and on basal and luteinizing hormone-induced steroidogenesis of bovine thecal cells: involvement of glucose and receptors for insulin-like growth factor I and luteinizing hormone.

scientific article

Effects of interleukin-6 on proliferation and follicle-stimulating hormone-induced estradiol production by bovine granulosa cells in vitro: dependence on size of follicle

scientific article published in January 1994

Effects of intermittent injections of LHRH on secretory patterns of LH and FSH and ovarian follicular growth during postpartum anovulation in suckled beef cows

scientific article published on 01 May 1986

Effects of intermittent injections of LHRH on specific binding of 125I-labeled gonadotropins to granulosa and theca, and concentrations of steroids in serum and ovarian follicles during postpartum anovulation in suckled beef cows

scientific article published on 01 May 1986

Effects of intraovarian infusion of insulin-like growth factor-I on ovarian follicular function in cattle

scientific article published on 01 February 2000

Effects of propionibacteria and yeast culture fed to steers on nutrient intake and site and extent of digestion

scientific article published in February 2008

Effects of thyroid hormones on bovine granulosa and thecal cell function in vitro: dependence on insulin and gonadotropins

scientific article

Endocrine disruption of uterine insulin-like growth factor expression in the pregnant gilt

scientific article published in October 2005

Energy level in winter diets of Fallow deer: effect on plasma levels of insulin-like growth factor-I and sex ratio of their offspring

scientific article published on 01 March 2001

Estradiol and luteinizing hormone regulation of insulin-like growth factor binding protein production by bovine granulosa and thecal cells.

scientific article

Evidence for direct effects of glyphosate on ovarian function: glyphosate influences steroidogenesis and proliferation of bovine granulosa but not theca cells in vitro

scientific article published on 5 December 2016

Expression and effect of fibroblast growth factor 9 in bovine theca cells ⬇️

scientific article published on August 7, 2012

Fibroblast growth factor 9 (FGF9) regulation of cyclin D1 and cyclin-dependent kinase-4 in ovarian granulosa and theca cells of cattle

scientific article

Follicle-stimulating hormone amplifies insulin-like growth factor I-mediated activation of AKT/protein kinase B signaling in immature rat Sertoli cells

scientific article published in June 2002

Follicle-stimulating hormone regulation of estradiol production: possible involvement of WNT2 and β-catenin in bovine granulosa cells.

scientific article published on 13 June 2012

Follicular fluid concentrations of free insulin-like growth factor (IGF)-I during follicular development in mares

scientific article

Fusarium mycotoxins: effects on reproductive function in domestic animals--a review.

scientific article published on 02 August 2013

G protein-coupled receptor 34 in ovarian granulosa cells of cattle: changes during follicular development and potential functional implications

scientific article published on 11 December 2016

Growth differentiation factor 9 (GDF9) stimulates proliferation and inhibits steroidogenesis by bovine theca cells: influence of follicle size on responses to GDF9.

scientific article published on 24 October 2007

Growth differentiation factor-9 has divergent effects on proliferation and steroidogenesis of bovine granulosa cells.

scientific article published on May 2006

High performance liquid chromatography of steroids in bovine adrenal glands: changes during the postpartum interval

scientific article published on 01 May 1989

Hormonal control of ovarian cell production of insulin-like growth factor binding proteins

scientific article

In vitro effects of deoxynivalenol and zearalenone major metabolites alone and combined, on cell proliferation, steroid production and gene expression in bovine small-follicle granulosa cells

article

Increased abundance of aromatase and follicle stimulating hormone receptor mRNA and decreased insulin-like growth factor-2 receptor mRNA in small ovarian follicles of cattle selected for twin births

scientific article published on 20 January 2012

Individual and combined effects of deoxynivalenol and α-zearalenol on cell proliferation and steroidogenesis of granulosa cells in cattle

scientific article published on 29 September 2015

Influence of body condition at calving and postpartum nutrition on endocrine function and reproductive performance of primiparous beef cows

scientific article published in December 2003

Influence of exogenous gonadotropin-releasing hormone on ovarian function in beef cows after short- and long-term nutritionally induced anovulation

scientific article published in December 2002

Influence of gonadotropins on insulin- and insulin-like growth factor-I (IGF-I)-induced steroid production by bovine granulosa cells

scientific article published in June 2002

Influence of nutrient intake and body fat on concentrations of insulin-like growth factor-I, insulin, thyroxine, and leptin in plasma of gestating beef cows

scientific article published in March 2005

Insulin-like growth factor (IGF) 2 stimulates steroidogenesis and mitosis of bovine granulosa cells through the IGF1 receptor: role of follicle-stimulating hormone and IGF2 receptor.

scientific article published on 14 March 2007

Insulin-like growth factor I enhancement of steroidogenesis by bovine granulosa cells and thecal cells: dependence on de novo cholesterol synthesis

scientific article published on 01 December 1996

Insulin-like growth factor binding protein-3: its biological effect on bovine granulosa cells

scientific article published on 01 January 1999

Insulin-like growth factor-I and its binding proteins in colostrum compared to measures in serum of Holstein neonates

scientific article published on 01 June 2003

Insulin-like growth factor-I in dairy cows: relationships among energy balance, body condition, ovarian activity, and estrous behavior

scientific article published on 01 April 1990

Insulin-like growth factor-I receptors in ovarian granulosa cells: effect of follicle size and hormones

scientific article published in June 1994

Insulin-like growth factor-II stimulates steroidogenesis in cultured bovine thecal cells

scientific article published in November 2004

Insulin-like growth factor-binding protein-2 and -3: their biological effects in bovine thecal cells

scientific article published on 01 June 1997

Interaction among bovine somatotropin, insulin, and gonadotropins on steroid production by bovine granulosa and thecal cells.

scientific article

Interaction between dietary intake and ovariectomy on concentrations of insulin-like growth factor-I, GH and LH in plasma of heifers

scientific article published on 01 January 1994

Interactions among basic fibroblast growth factor, epidermal growth factor, insulin, and insulin-like growth factor-I (IGF-I) on cell numbers and steroidogenesis of bovine thecal cells: role of IGF-I receptors.

scientific article

Interleukin-2 affects steroidogenesis and numbers of bovine ovarian granulosa cells but not thecal cellsin vitro

scientific article published on 01 December 1995

In vitro effects of the Fusarium mycotoxins fumonisin B1 and beauvericin on bovine granulosa cell proliferation and steroid production

scientific article published on 26 January 2017

Levels of insulin-like growth factor (IGF) binding proteins, luteinizing hormone and IGF-I receptors, and steroids in dominant follicles during the first follicular wave in cattle exhibiting regular estrous cycles

scientific article published on 01 July 1996

Luteinizing hormone, growth hormone, insulin-like growth factor-I, insulin and metabolites before puberty in heifers fed to gain at two rates

scientific article published on 01 July 1996

Maintenance energy requirements of beef cows and relationship with cow and calf performance, metabolic hormones, and functional proteins

scientific article published on 05 June 2014

Mechanism of action of 2-hydroxyestradiol on steroidogenesis in ovarian granulosa cells: interactions with catecholamines and gonadotropins involve cyclic adenosine monophosphate

scientific article published on 01 January 1989

Metabolic status, gonadotropin secretion, and ovarian function during acute nutrient restriction of beef heifers

scientific article published on 03 July 2013

Microarray analysis of insulin-like growth factor-I-induced changes in messenger ribonucleic acid expression in cultured porcine granulosa cells: possible role of insulin-like growth factor-I in angiogenesis.

scientific article published on 27 February 2009

NMR studies of combined lanthanide shift and relaxation agents for differential characterization of 23Na in a two-compartment model system

scientific article published on 01 April 1986

New insights into the pathogenesis of cystic follicles in cattle: microarray analysis of gene expression in granulosa cells.

scientific article published on 14 January 2011

Nutritional anestrus in beef cows: effects of body condition and ovariectomy on serum luteinizing hormone and insulin-like growth factor-I

scientific article published on 01 June 1991

Nutritionally induced anovulation in beef Heifers: ovarian and endocrine function during realimentation and resumption of ovulation

scientific article published on 01 May 2000

Nutritionally induced anovulation in beef heifers: ovarian and endocrine function preceding cessation of ovulation

scientific article published on 01 June 1999

Ovarian follicular development in cattle selected for twin ovulations and births

scientific article published in February 2004

Ovarian follicular growth, function and turnover in cattle: a review.

scientific article

Ovarian function in nutritionally induced anoestrous cows: effect of exogenous gonadotrophin-releasing hormone in vivo and effect of insulin and insulin-like growth factor I in vitro

scientific article published on 01 September 1999

Ovarian response after gonadotropin treatment of heifers immunized against gonadotropin-releasing hormone

scientific article published on 01 May 1996

Oxygen and steroid concentrations in preovulatory follicles of lactating dairy cows exposed to acute heat stress

scientific article

Plasma growth hormone, insulin-like growth factor I, and insulin-like growth factor binding proteins in pigs with divergent genetic merit for postweaning average daily gain

scientific article published on 01 June 1995

Plasma protein for pigs weaned at 19 to 24 days of age: effect on performance and plasma insulin-like growth factor I, growth hormone, insulin, and glucose concentrations

scientific article published on 01 December 1995

Possible role of IGF2 receptors in regulating selection of 2 dominant follicles in cattle selected for twin ovulations and births.

scientific article

Possible role of kallikrein in proteolysis of insulin-like growth factor binding proteins during the oestrous cycle and early pregnancy in pigs

scientific article

Predicting cholesterol, progesterone, and days to ovulation using postpartum metabolic and endocrine measures

scientific article published in September 2003

Pregnancy-associated plasma protein-A and insulin-like growth factor binding protein mRNAs in granulosa cells of dominant and subordinate follicles of preovulatory cattle.

scientific article published in January 2005

Production of insulin-like growth factor-I by granulosa cells but not thecal cells is hormonally responsive in cattle

scientific article published on 01 November 2000

Propionibacteria fed to dairy cows: effects on energy balance, plasma metabolites and hormones, and reproduction

scientific article published in July 2002

Proteolysis of insulin-like growth factor binding proteins during preovulatory follicular development in cattle

scientific article published in July 2001

Proteolytic degradation of insulin-like growth factor binding proteins by ovarian follicles: a control mechanism for selection of dominant follicles.

scientific article published on 10 December 2003

Quantification of insulin-like growth factor binding protein mRNA using real-time PCR in bovine granulosa and theca cells: effect of estradiol, insulin, and gonadotropins

scientific article published in April 2004

Real-time RT-PCR quantification of pregnancy-associated plasma protein-A mRNA abundance in bovine granulosa and theca cells: effects of hormones in vitro.

scientific article published on 6 January 2006

Receptors for insulin-like growth factor-I and tumor necrosis factor-alpha are hormonally regulated in bovine granulosa and thecal cells

scientific article published in July 2001

Relationship between concentrations of cortisol in ovarian follicular fluid and various biochemical markers of follicular differentiation in cyclic and anovulatory cattle

scientific article

Relationship between concentrations of immunoreactive insulin-like growth factor-I in follicular fluid and various biochemical markers of differentiation in bovine antral follicles

scientific article published on 01 October 1988

Relationship between ovulation rate and concentrations of insulin-like growth factor-1 in plasma during the oestrous cycle in various genotypes of sheep

scientific article published on 01 March 1993

Relationship between serum insulin-like growth factor-I and genotype during the postpartum interval in beef cows

scientific article published on 01 March 2002

Relationships between histological signs of atresia, steroids in follicular fluid, and gonadotropin binding in individual bovine antral follicles during postpartum anovulation

scientific article published on 01 May 1987

Role of adiponectin in regulating ovarian theca and granulosa cell function

scientific article

Role of sulfur and chloride in the dietary cation-anion balance equation for lactating dairy cattle

scientific article published in March 1991

STRUCTURE OF STREPTOLYDIGIN

scientific article published on 01 January 1963

Secretion of luteinizing hormone and follicle-stimulating hormone from overfeeding dairy heifers

scientific article published on 01 September 1984

Specific binding of 125I-labeled human chorionic gonadotropin to gonadal tissue: comparison of limited-point saturation analyses to Scatchard analyses for determining binding capacities and factors affecting estimates of binding capacity

scientific article published on 01 July 1986

Systemic but not intraovarian concentrations of insulin-like growth factor-I are affected by short-term fasting

scientific article published in May 1992

The Adipose Obese Gene Product, Leptin: Evidence of a Direct Inhibitory Role in Ovarian Function* ⬇️

scientific article published on August 1, 1997

The IGF system in the neonatal ovine uterus

scientific article

The hedgehog system in ovarian follicles of cattle selected for twin ovulations and births: evidence of a link between the IGF and hedgehog systems

scientific article

The hedgehog-patched signaling pathway and function in the mammalian ovary: a novel role for hedgehog proteins in stimulating proliferation and steroidogenesis of theca cells.

scientific article

The influence of tropical adaptation on plasma concentrations of insulin-like growth factor-I in purebred and crossbred beef cattle1 ⬇️

scientific article published on July 1, 2011

The ovarian insulin and insulin-like growth factor system with an emphasis on domestic animals ⬇️

scientific article published on July 1, 1995

Toxicological effects of fumonisin B1 alone and in combination with other fusariotoxins on bovine granulosa cells

scientific article published on 20 April 2016

Tumor Necrosis Factor-α (TNF-α) Inhibits Steroidogenesis of Bovine Ovarian Granulosa and Thecal Cells In Vitro: Involvement of TNF-α Receptors ⬇️

scientific article published on April 1, 1998

Use of active immunization against prolactin to study the influence of prolactin on growth and reproduction in the ram

scientific article published on 01 June 1981

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