Peter Ryan

Peter Ryan

Professor, Associate Provost for Academic Affairs
Reproductive Physiology



Mailing Address:
Mailstop 9723
Mississippi State, MS 39762
Education:
  • Post-Doctoral, Rutgers University
  • Post-Doctoral, Princeton University
  • Ph.D., University of Guelph
  • M.S., University of Guelph
  • B.A., University of Dublin

Society Memberships:
  • Junior Faculty Advisor Pre-Veterinary Students Club
  • Society for the Study of Reproduction
  • Society for the Study of Fertility
  • Sigma Xi Honor Society
  • National Geographic Society

Research:
  • Physiology of Reproduction - Equine, Swine, Dairy and Beef Cattle.
  • Developmental Physiology - Sexual Development and Endocrine Disrupters.
  • Cellular and Molecular Biology - Regulation of gene expression (protein hormones, matrix metalloproteinases, cell adhesion molecules) in reproductive tissue.

Publications
2019
Durfey, C. L., S. E. Swistek, S. F. Liao, M. A. Crenshaw, H. Clemente, R. V. K. G. Thirumalai, C. S. Steadman, P. L. Ryan, S. T. Willard, J. M. Feugang. 2019. Nanotechnology-based approach for safer enrichment of semen with best spermatozoa. Journal of Animal Science and Biotechnology 10:14. Download
2018
Feugang, J. M., S. F. Liao, S. T. Willard, P. L. Ryan. 2018. In-depth proteomic analysis of boar spermatozoa through shotgun and gel-based methods. BMC Genomics 19: 6 (1-13). Download
2018
Jain, S., S. B. Park, S. R. Pillai, P. L. Ryan, S. T. Willard, J. M. Feugang. 2018. Applications of Fluorescent Quantum Dots for Reproductive Medicine and Disease Detection. In A.F. Gomes, editor, Unraveling the Safety Profile of Nanoscale Particles and Materials-From Biomedical to Environmental Applications. InTech. Download
2018
Park, S. B., C. S. Steadman, A. A. Chaudhari, S. R. Pillai, S. R. Singh, P. L. Ryan, S. T. Willard, J. M. Feugang. 2018. Proteomic analysis of antimicrobial effects of pegylated silver coated carbon nanotubes in Salmonella enterica serovar Typhimurium. Journal of Nanobiotechnology 16:31. Download
2018
Park, S. B., S. White, C. S. Steadman, C. A. Cavinder, S. T. Willard, P. L. Ryan, J. M. Feugang. 2018. Real-time bioluminescence analysis of Escherichia coli O157:H7 survival on livestock meats stored fresh, cold, or frozen. Journal of Food Protection 81(11):1906-1912. Download
2017
Durfey, C. L., D. D. Burnet, S. F. Liao, C. S. Steadman, M. A. Crenshaw, H. J. Clemente, S. T. Willard, P. L. Ryan, J. M. Feugang. 2017. Nanotechnology-based selection of boar spermatozoa: growth development and health assessments of produced offspring. Livestock Sciences 205: 137-142. Download
2017
Greene, J. M., P. L. Ryan. 2017. L-Arginine in the uterus and placenta and during gestation in mammals. In V.B. Patel, et al, editors, L-Arginine in Clinical Nutrition, Nutrition and Health, Chapter 22. Download
2016
Vasquez, E. S., S. T. Willard, P. L. Ryan, J. M. Feugang, K. B. Walters. 2016. Bioluminescence luciferase-magnetic-nanoparticles as potential imaging agents for mammalian spermatozoa tracking and detection. Journal of Nanobiotechnology 14:20. Download
2015
Feugang J. M., J. C. Rodriguez-Munoz, M. A. Crenshaw, S. T. Willard, P. L. Ryan. 2015. Beneficial effects of relaxin on general motility of stored boar spermatozoa. Reproductive Biology and Endocrinology 13:24. Download
2015
Feugang J. M., J. M. Greene, H. L. Sanchez-Rodriguez, J. V. Stokes, M. A. Crenshaw, S. T. Willard, P. L. Ryan. 2015. Profiling of relaxin and its receptor proteins in boar reproductive tissues and spermatozoa. Reproductive Biology and Endocrinology 13:46. Download
2015
Feugang, J. M., R. C. Youngblood, J. M. Greene, S. T. Willard, P. L. Ryan. 2015. Self-illuminating quantum dots for non-invasive bioluminescence and fluorescence imaging of mammalian gametes. Journal of Nanobiotechnology 13:38. Download
2015
Feugang, J. M., S. F. Liao, M. A. Crenshaw, H. Clemente, S. T. Willard, and P. L. Ryan. 2015. Lectin-functionalized magnetic iron oxide nanoparticles for reproductive improvement. Journal of Fertilization: In Vitro - IVF-Worldwide, Reproductive Medicine, Genetics & Stem Cell Biology 3(2):145 (1-5).
2015
Patnaik, S.S., B. Brazile, V. Dandolu, P.L. Ryan, J. Liao. 2015. Mayer-Rokitansky-Kuster-Hauser (MRKH) Syndrome: A historical perspective. Gene 555(1):1-8. Download
2014
Feugang, J.M., R.C. Youngblood, S.T. Willard, P.L. Ryan. 2014. Potential use of conjugated quantum dot nanoparticles for bio-labelling of mammalian gametes. Reproduction, Fertility and Development 26(1):187. Download
2014
Youngblood, R.C., M. McGee, J.M. Feugang, S.T. Willard, P.L. Ryan. 2014. The use of a whole animal biophotonic model as a screen for the angiogenic potential of estrogenic compounds. International Journal of Medical Sciences 11(6):545-553. Download
2013
Greene, J., J.M. Feugang, K.E. Pfeiffer, J.V. Stokes, S.D. Bowers, and P.L. Ryan. 2013. L-arginine enhances cellproliferation and reduces apoptosis in human endometrial RL95-2 cells. Reproductive Biology and Endocrinology Vol. 11:15. Download
2012
Feugang, J.M., R.C. Youngblood, J. Greene, A. Fahad, W. Monroe, S.T. Willard, P.L. Ryan. 2012. Application of quantum dot nanoparticles for potential non-invasive bio-imaging of mammalian spermatozoa. Journal of Nanobiotechnology Vol. 10:45. Download
2012
Feugang, J.M., S.T. Willard, and P.L. Ryan. 2012. Manipulation of mammalian gametes and embryos: What are we learning from animal settings. Journal of Fertilization: In Vitro 2:e114. Download
2012
Greene, J. M., C. W. Dunaway, S. D. Bowers, B. J. Rude, J. M. Feugang, and P. L. Ryan. 2012. Dietary L-arginine supplementation during mouse gestation enhances reproductive performance and Vegfr2 transcription activity in the fetoplacental unit. Journal of Nutrition 142:456-460. Download
2012
Sanchez, H.L., R.C. Vann, R.C. Youngblood, E. Baravik-Munsell, D.L. Christiansen, S.T. Willard, P.L. Ryan. 2012. Evaluation of pulsatility index and diameter of the jugular vein and superficial body temperature as physiological indices of temperament in weaned beef calves: Relationship with serum cortisol concentrations, rectal temperature, and sex. Livestock Science. Download
2012
Weed, B., A. Borazjani, S. Patnaik, R. Prabhu, M.F. Horstemeyer, P.L. Ryan, T. Franz, L.N. Williams, J. Liao. 2012. Stress state and strain rate dependence of the human placenta. Annals of Biomedical Engineering 40(10):2255-2265. Download
2011
Borazjani, A., B. Weed, S.H. Elder, J. Feugang, D.L. Christiansen, P.L. Ryan, J. Liao, S. Patnaik. 2011. A comparative biomechanical analysis of term fetal membranes in human and domestic species. American Journal of Obstetrics and Gynecology 365:25-36. Download
2011
Feugang, J., S.T. Willard, P.L. Ryan, J. Greene. 2011. In vitro effects of relaxin on gene expression in procine cumulus-oocyte complexes and developing embryos. Reproductive Biology and Endocrinology 9:1:15. Download
2011
Feugang, J.M., J.C. Rodriguez-Munoz, S.T. Willard, R. Bathgate, P.L. Ryan. 2011. Examination of relaxin and its receptors expression in pig gametes and embryos. Reproductive Biology and Endocrinology 9:1:10. Download
2011
Greene, J., C. Dunaway, S.D. Bowers, B.J. Rude, J.M. Feugang, P.L. Ryan. 2011. In vivo monitoring of fetoplacental Vegfr2 gene activity in a murine pregnancy model using a Vegfr2-luc reporter gene and bioluminescent imaging. Reproductive Biology and Endocrinology 9:51. Download
2011
Ryan, P.L. 2011. A novel approach to monitoring pathogen progression during uterine and placental infection in the mare using bioluminescence imaging technology and lux-modified bacteria. Journal of Animal Science 89(5):1538-1540. Download
2011
Ryan, P.L. 2011. Horse species symposium: Pathogenic and reproductive dysfunction in horses. Journal of Animal Science 89(5):1538-1540. Download
2011
Ryan, P.L., D.L. Christiansen, R. Hopper, F.K. Walters, K. Moulton, J. Curbelo, J. Greene, S.T. Willard. 2011. A novel approach to monitoring pathogen progression during uterine and placental infection in the mare using biophotonic imaging technology and lux-modified bacteria. Journal of Animal Science 89:5:1541-1551. Download
2011
Scott, V.L., L.A. Shack, J.B. Eells, P.L. Ryan, J.R. Donaldson, K.S. Coats. 2011. Immunomodulator expression in trophoblasts from the feline immunodeficiency virus (FIV)-infected cat. Journal of Virology 8:336. Download
2011
Scott, V.L., R.K. Wallace, S. Mays, P.L. Ryan. 2011. An immunohistochemical assay to detect trophoblasts in frozen feline placenta. Journal of Veterinary Diagnostic Investigation 23(2):275-281. Download
2011
Tucker, A., H.L. Sanchez, W.B. Tucker, A.R. Williams, J.W. Fuquay, S.T. Willard, P.L. Ryan. 2011. Effects of early postpartum GnRH and prostaglandin F2 alpha administration on reproductive activity and ovulation synchronization in lactating dairy cows. Journal of Animal and Veterinary Advances 10(7):900-908. Download
2010
Lockett, N.N., C.E. Boudreaux, V.L. Scott, B.T. Clay, S.B. Pruett, P.L. Ryan. 2010. Expression of regulatory T cell (Treg) activation markers in endometrial tissues from early and late pregnancy in the feline immunodeficiency virus (FIV)-infected cat. Placenta 3l(9):796-802. Download
2010
Mochal, C., W. Miller, P.L. Ryan, A.M. Rashmir-Raven, A. Colley. 2010. Ocular findings in quarter horses with hereditary equine regional dermal asthenia. Journal of the American Veterinary Medicine Association 21:509-518. Download
2010
Ryan, P.L., J. Greene, D.L. Christiansen, R. Hopper, F.K. Walters, M. LeBlanc. 2010. Emerging diagnostic approaches for evaluation of fetal and pregnancy well-being in the mare. Clinical Theriogenology 2(2):149-161.
2010
Sykes, D.J., S. Couvillion, J.M. Martin, T.G. Althen, B.J. Rude, M.A. Crenshaw, P.D. Gerard, P.L. Ryan. 2010. Comparison of ground raw soybean and soybean meal diets on carcass traits of gilts. Journal of Muscle Foods 21(3):509-518. Download
2009
Bowers, S.D., B.S. Gandy, W.B. Anderson, P.L. Ryan,S.T. Willard. 2009. Assessment of pregnancy in the late gestation mare using digital infrared thermography. Theriogenology 72:372-377. Download
2009
Grady, J., S.H. Elder, P.L. Ryan, C. Swiderski, A.M. Rashmir-Raven. 2009. Biomechanical and molecular characteristics of hyperelastosis cutis in Quarter Horses. Veterinary Dermatology 20(5-6):591-599. Download
2009
Moulton, K., P.L. Ryan, D.C. Lay Jr., S.T. Willard. 2009. Photonic plasmid stability of transformed Salmonella typhimurium: a comparison of three unique plasmids. BMC Microbiology 2009, 9:152 Download
2009
Moulton, K., P.L. Ryan, D.C. Lay, S.T. Willard. 2009. Postmortem photonic imaging of lux-modified Salmonella Typhimurium within the gastrointestinal tract of swine following oral inoculation in vivo. Journal of Animal Science 87:2239-2244.
2009
Moulton, K., P.L. Ryan, D.L. Christiansen, R.M. Hopper, C. Klauser, W.A. Bennett, S. Rodts-Palenik, S.T. Willard. 2009. Hormonal Profiles of Late Gestation Ewes Following Intra-uterine Inoculation With and Without Lux-modified Escherichia coli. Journal of Reproduction and Development 55(1):55-62. Download
2009
Moulton, K., P.L. Ryan, D.L. Christiansen, R.M. Hopper, C. Klauser, W.A. Bennett, S. Rodts-Palenik, S.T. Willard. 2009. Ex vivo bioluminescence imaging of late gestation ewes following intrauterine inoculation with lux-modified escherichia coli. Comparative Immunology, Microbiology and Infectious Diseases 32:429-438. Download
2009
Ryan, P.L., D.L. Christiansen, R.M. Hopper, C.A. Bagnell, W.E. Vaala, M.M. LeBlanc. 2009. Evaluation of relaxin blood profiles of horses as a means of assessing placental function in high-risk pregnancies and responsiveness to therapeutic strategies. Annals of the New York Academy of Science 1160:169-178. Download