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Biology and Biochemistry

D-Index
69
Citations
15101
World Ranking
7490
National Ranking
3411

Overview

Leon J. Spicer is affiliated with Oklahoma State University in the United States, focusing on research in the fields of Biochemistry, Genetics and Molecular Biology, as well as Agricultural and Biological Sciences. Their work spans 28 publications in the former field and 26 in the latter.

Their research covers several subfields including Molecular Biology, Agronomy and Crop Science, Genetics, Plant Science, and Ecology, Evolution, Behavior and Systematics. The main topics addressed in their publications include:

  • Reproductive Physiology in Livestock
  • Kruppel-like factors research
  • Animal Genetics and Reproduction
  • Mycotoxins in Agriculture and Food
  • Reproductive Biology and Fertility
  • Plant and fungal interactions
  • Growth Hormone and Insulin-like Growth Factors

Leon J. Spicer has coauthored with several frequent collaborators, among them:

  • Excel Rio S. Maylem
  • L.F. Schütz
  • F. Caloni
  • Isadora Maria Batalha
  • Eufrocina P. Atabay

Their research has been published most often in these venues:

  • Journal of Animal Science
  • Toxins
  • Theriogenology
  • Animal Reproduction Science
  • Domestic Animal Endocrinology

Among their recent papers are the following:

  • "Discovery of a possible role of asprosin in ovarian follicular function," 2020, Journal of Molecular Endocrinology
  • "Emerging mycotoxins and reproductive effects in animals: A short review," 2022, Journal of Applied Toxicology
  • "Enniatin B1: Emerging Mycotoxin and Emerging Issues," 2023, Toxins
  • "A potential role of fibrillin-1 (FBN1) mRNA and asprosin in follicular development in water buffalo," 2021, Theriogenology
  • "Branched-chain amino acids partially recover the reduced growth of pigs fed with protein-restricted diets through both central and peripheral factors," 2021, Animal nutrition

Best Publications

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

    L.J. Spicer;S.E. Echternkamp

  • The adipose obese gene product, leptin: evidence of a direct inhibitory role in ovarian function.

    Leon J. Spicer;Cristina C. Francisco

  • 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.

    L. J. Spicer;E. Alpizar;S. E. Echternkamp

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

    L.J. Spicer;W.B. Tucker;G.D. Adams

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

    S E Echternkamp;L J Spicer;K E Gregory;S F Canning

  • INFLUENCE OF BODY CONDITION AT CALVING AND POSTPARTUM NUTRITION ON ENDOCRINE FUNCTION AND REPRODUCTIVE PERFORMANCE OF PRIMIPAROUS BEEF COWS

    N. H. Ciccioli;R. P. Wettemann;L. J. Spicer;C. A. Lents

  • Leptin: a possible metabolic signal affecting reproduction.

    Leon J. Spicer

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

    M. G. Murphy;W. J. Enright;M. A. Crowe;K. McConnell

  • 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

    K. Stagg;L.J. Spicer;J.M. Sreenan;J.F. Roche

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

    Leon J. Spicer;Cristina C. Francisco

  • Development of a culture system for bovine granulosa cells: effects of growth hormone, estradiol, and gonadotropins on cell proliferation, steroidogenesis, and protein synthesis.

    D J Langhout;L J Spicer;R D Geisert

  • 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.

    R E Stewart;L J Spicer;T D Hamilton;B E Keefer

  • 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.

    R E Stewart;L J Spicer;T D Hamilton;B E Keefer

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

    I Bossis;R P Wettemann;S D Welty;J A Vizcarra

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

    L. J. Spicer;L. J. Spicer;S. E. Echternkamp;S. E. Echternkamp

  • Ovarian and endocrine characteristics during an estrous cycle in Angus, Brahman, and Senepol cows in a subtropical environment.

    P Alvarez;L J Spicer;C C Chase;M E Payton

  • The role of endocrine insulin-like growth factor-I (IGF-I) in female bovine reproduction

    M.A. Velazquez;L.J. Spicer;D.C. Wathes

  • Role of adiponectin in regulating ovarian theca and granulosa cell function.

    Dana V. Lagaly;Pauline Y. Aad;Juan A. Grado-Ahuir;Laura B. Hulsey

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

    Diarmuid O'Callaghan;Halimatun Yaakub;Poul Hyttel;Leon J. Spicer

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

    J. V. Yelich;Robert P. Wettemann;T. T. Marston;L. J. Spicer

Frequent Co-Authors

R. P. Wettemann
R. P. Wettemann Oklahoma State University
Rodney D. Geisert
Rodney D. Geisert University of Missouri
James F. Roche
James F. Roche University College Dublin
Duane H. Keisler
Duane H. Keisler University of Missouri
James J. Ireland
James J. Ireland Michigan State University
Maurice P. Boland
Maurice P. Boland University College Dublin
Mark E. Payton
Mark E. Payton Oklahoma State University
Nathan M. Long
Nathan M. Long Clemson University
Keith E. Gregory
Keith E. Gregory United States Department of Agriculture
Samuel W. Coleman
Samuel W. Coleman United States Department of Agriculture

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