M. Amstalden

Best Publications

• Regulatory roles of leptin in reproduction and metabolism: a comparative review.

  D.A. Zieba;D.A. Zieba;M. Amstalden;G.L. Williams

  305
  Citations

• Neurokinin 3 Receptor Immunoreactivity in the Septal Region, Preoptic Area and Hypothalamus of the Female Sheep: Colocalisation in Neurokinin B Cells of the Arcuate Nucleus but not in Gonadotrophin‐Releasing Hormone Neurones

  M. Amstalden;L. M. Coolen;L. M. Coolen;A. M. Hemmerle;Heather J. Billings;Heather J. Billings

  243
  Citations

• Leptin gene expression, circulating leptin, and luteinizing hormone pulsatility are acutely responsive to short-term fasting in prepubertal heifers: relationships to circulating insulin and insulin-like growth factor I(1).

  M. Amstalden;M.R. Garcia;S.W. Williams;R.L. Stanko

  238
  Citations

• Serum leptin and its adipose gene expression during pubertal development, the estrous cycle, and different seasons in cattle

  M. R. Garcia;M. Amstalden;S. W. Williams;R. L. Stanko;R. L. Stanko

  205
  Citations

• Reduced progesterone concentration during growth of the first follicular wave affects embryo quality but has no effect on embryo survival post transfer in lactating dairy cows

  Fernando Acuna Rivera;Luís Gustavo Delamanha Mendonça;Gláucio Lopes;Jose E P Santos

  189
  Citations

• Concentration of progesterone during the development of the ovulatory follicle: II. Ovarian and uterine responses

  R.L.A. Cerri;R.C. Chebel;F. Rivera;C.D. Narciso

  155
  Citations

• Leptin and its role in the central regulation of reproduction in cattle.

  G.L Williams;M Amstalden;M.R Garcia;R.L Stanko

  155
  Citations

• Central Infusion of Recombinant Ovine Leptin Normalizes Plasma Insulin and Stimulates a Novel Hypersecretion of Luteinizing Hormone after Short-Term Fasting in Mature Beef Cows

  M. Amstalden;M.R. Garcia;R.L. Stanko;R.L. Stanko;S.E. Nizielski

  145
  Citations

• Hormonal manipulations in the 5-day timed artificial insemination protocol to optimize estrous cycle synchrony and fertility in dairy heifers.

  F.S. Lima;E.S. Ribeiro;R.S. Bisinotto;L.F. Greco

  116
  Citations

• Use of a stair-step compensatory gain nutritional regimen to program the onset of puberty in beef heifers.

  R C Cardoso;B R C Alves;L D Prezotto;J F Thorson

  114
  Citations

• Efficacy of embryo transfer in lactating dairy cows during summer using fresh or vitrified embryos produced in vitro with sex-sorted semen.

  B.M. Stewart;J. Block;P. Morelli;A.E. Navarette

  106
  Citations

• Age at puberty, total fat and conjugated linoleic acid content of carcass, and circulating metabolic hormones in beef heifers fed a diet high in linoleic acid beginning at four months of age.

  M. R. Garcia;M. Amstalden;C. D. Morrison;D. H. Keisler

  105
  Citations

• Effects of leptin on basal and GHRH-stimulated GH secretion from the bovine adenohypophysis are dependent upon nutritional status.

  D A Zieba;M Amstalden;S Morton;J L Gallino

  91
  Citations

• Chronic administration of recombinant ovine leptin in growing beef heifers: effects on secretion of LH, metabolic hormones, and timing of puberty.

  M. N. Maciel;M. N. Maciel;D. A. Zieba;M. Amstalden;D. H. Keisler

  87
  Citations

• Regulatory Roles of Leptin at the Hypothalamic-Hypophyseal Axis Before and after Sexual Maturation in Cattle

  D.A. Zieba;M. Amstalden;S. Morton;M.N. Maciel

  80
  Citations

• Divergent effects of leptin on luteinizing hormone and insulin secretion are dose dependent.

  Dorota A. Zieba;Marcel Amstalden;Marlon N. Maciel;Duane H. Keisler

  78
  Citations

• Kisspeptin activates the hypothalamic–adenohypophyseal–gonadal axis in prepubertal ewe lambs

  Unknown

  77
  Citations

• Leptin Prevents Fasting-Mediated Reductions in Pulsatile Secretion of Luteinizing Hormone and Enhances Its Gonadotropin-Releasing Hormone-Mediated Release in Heifers

  M.N. Maciel;D.A. Zieba;M. Amstalden;D.H. Keisler

  74
  Citations

• Leptin acts at the bovine adenohypophysis to enhance basal and gonadotropin-releasing hormone-mediated release of luteinizing hormone: differential effects are dependent upon nutritional history.

  M. Amstalden;D. A. Zieba;J. F. Edwards;P. G. Harms

  71
  Citations

• Comparison of three approaches for synchronization of ovulation for timed artificial insemination in Bos indicus-influenced cattle managed on the Texas gulf coast

  Unknown

  68
  Citations