Dr Stefan S du Plessis

Please mail me for PDF copies of any of the papers listed below.

Peer Reviewed full ARTICLES IN SCIENTIFIC JOURNALS

Spermatozoa

  1. Du Plessis, S.S., Page, C. & Franken D.R. 2000. The zona pellucida induced acrosome reacion of human spermatozoa involves extracellular signal–regulated kinase activation. Andrologia, 33(6): 337-342.
  2. Du Plessis, S.S., Page, C. & Franken D.R. 2001. Extracellular signal–regulated kinase activation involved in human sperm-zona pellucida binding. Andrologia, 34(1): 55-59.
  3. Du Plessis SS, Franken DR. 2002. Effect of PDE5 inhibition (VIAGRA™) on sperm-egg interaction and sperm kinematics, Proceedings of the 9th International Symposium on Spermatology, Moduzzi Editore, Italy 285p, ISBN 88-323-2107-6, p89-94
  4. Du Plessis SS, Franken DR, Baldi E, Luconi M. 2004. Phosphatidylinositol 3-kinase inhibition enhances human sperm motility and sperm-zona pellucida binding. Int J Androl, 27(1): 19-26.
  5. Du Plessis SS, De Jongh PS, Franken DR. 2004. The effect of acute in vivo sildenafil citrate (VIAGRATM) and in vitro 8-bromo-cGMP treatments on semen parameters and sperm function. Fertility & Sterility, 81(4): 1026-1033.
  6. Lampiao F, Strijdom JG, Du Plessis SS. 2006. Direct nitric oxide measurement in human spermatozoa after exposure to different centrifugation times: flow cytrometric analysis using the fliorescent probe, diaminofluorescein. Int J Androl, Oct;29(5):564-7.
  7. Lampiao F, Du Plessis SS. 2006. Comparing the Multi-ZSC one step standardized swim-up method to the double wash swim-up method: effect of sperm separation on morphology, head morphometry and acrosome reaction inducibility. Fertility & Sterility, Sep; 86(3):739-41.
  8. Lampiao F, Strijdom H, Du Plessis SS 2006. Reactive oxygen species measurement in human spermatozoa by flow cytometry using the fluorescent probe, 2’,7’-dichlorofluorescein-diacetate (DCFH-DA). Medical Technology SA, Dec, 20(2): 7-8.
  9. Aboua G, Du Plessis SS, Brooks N. 2007. In vitro red palm oil (RPO) administration to human spermatozoa: finding a suitable solvent, Medical Technology SA, Jun, 21(1): 7-9.
  10. Lampiao F, Krom D, Du Plessis SS (2008) The in vitro effects of Mondia whitei on human sperm motility parameters. Phytotherapy Research. Sept, 22(9): 1272-1273.
  11. Lampiao F, Du Plessis SS (2008) The effects of insulin and leptin on human sperm motility, viability, acrosome reaction and nitric oxide production. Asian Journal of Andrology. Sep;10 (5):799-807.
  12. Lampiao F, Du Plessis SS (2008) TNF-α and IL-6 affect human sperm function by elevating nitric oxide production. Reproductive BioMedicine Online. 17(5):628-631
  13. Lampiao F, Du Plessis SS (2008) Effects of TNF-α and IL-6 on progesterone and calcium ionophore-induced acrosome reaction. International Journal of Andrology. Epub ahead of prin.
  14. Varghese AC, Du Plessis SS, Agarwal A (2008) Male gamete survival at stake: causes and solutions. Reproductive BioMedicine Online. Accepted
  15. Lampiao L, Agarwal A, Du Plessis SS (2008) The role of insulin and leptin in male reproduction. Archives of Medical Science. In Press
  16. Mahfouz RZ, Du Plessis SS, Aziz N, Sharma R, Sabanegh E, Agarwal A (2008) Sperm viability, apoptosis, and intracellular reactive oxygen species levels in human spermatozoa before and after induction of oxidative stress. Fertil Steril Epub ahead of print

Fertility Preservation and IVF

  1. Georgescu ES, Goldberg JM, Du Plessis SS, Agarwal A (2008) Present and Future Fertility Preservation Strategies for Female Cancer Patients. Obstetrical & Gynecological Survey 63(11)
  2. Du Plessis SS, Makker K, Desai, Agarwal A (2008) The impact of oxidative stress on in vitro fertilization. Expert Rev. Obstet. Gynecol. 3(4), 359-554
  3. Alex C Varghese, Stefan S du Plessis, Tommaso Falcone, Ashok Agarwal (2008) Cryopreservation/transplantation of ovarian tissue and in vitro maturation of follicles and oocytes: challenges for fertility preservation. Reproductive Biology & Endocrinology, 6(1):47 Epub ahead of print
  4. Matthys H Botha, Thinus F Kruger, Stefan S du Plessis (2008) Fertility sparing surgeryfor female cancer patients complementing cryotechniques. Archives of Medical Science. In Press

Animal Reproduction

  1. Van Niekerk, F.E., Cloete, S.W.P., Coetzer, W.A., Du Plessis, S.S., Wellington, A.C. & Smith, W.A. 1994. An assessment of the toxicity of parenteral treatment with copper EDTA and copper heptonate in sheep. Journal of the South African Veterinary Association, 665(2): 46-51
  2. Van Niekerk, F.E., Cloete, S.W.P., Heine, E.W.P., Van der Merwe,G.D., Wellington, A, du Plessis, S.S. & Bekker, D. 1996. The effect of selenium supplementation during the early post-mating period on embryonic survival in sheep. Journal of the South African Veterinary Association, 67(4): 209-213.
  3. Du Plessis, S.S., Van Niekerk, F.E. & Coetzer, W.A. 1999. The effect of dietary molybdenum and sulphate on sexual activity and plasma progesterone concentrations of ewes. Small Ruminant Research, 33(1): 71-76
  4. Du Plessis, S.S., Van Niekerk, F.E. & Coetzer, W.A. 1999. The effect of dietary molybdenum and sulphate on the oestrous cycle and ovulation in ewes after manipulation with exogenous progesterone alone or in combination with FSH and LH. Small Ruminant Research, 33(1): 63-69

PEER REVIEWED PUBLISHED ABSTRACTS

  1. Du Plessis SS, Franken DR. Effect of PDE5 inhibition (VIAGRA™) on sperm-egg interaction and sperm kinematics, 9th International Symposium on Spermatology, 6-11 October 2002, V&A Waterfront, Cape Town, South Africa, ISBN 1-86808-567-8
  2. Lampiao F, Du Plessis SS. Insulin and leptin have an effect on human sperm motility, acrosome reaction and nitric oxide production. International Journal of Andrology 2008, 31 (Suppl. 1), 15
  3. Aboua G, Du Plessis SS, Brooks N. The impact of superoxide (SO), some commercially available antioxidants and red palm oil on sperm motility, viability and intracellular SO levels. International Journal of Andrology 2008, 31 (Suppl. 1), 15
  4. Du Plessis SS, Smit L, Lampiao F. Proteins uniquely expressed in sperm with superior motility and morphology. International Journal of Andrology 2008, 31 (Suppl. 1), 16

CHAPTERS IN BOOKS

  1. Du Plessis SS, Lampiao F, Desai N, Agarwal A (2009) Oxidative stress and reproductive function with special reference to environmental and occupational exposure In: Environmental and occupational exposure and Reproductive health. Ed. Sunil Kumar, Daya Publishing House, New Delhi.

DISSERTATIONS

  1. Du Plessis, S.S. 1994. Die invloed van ’n geïnduseerde kopertekort op die reproduksie van SA Vleismerino-ooie. (The influence of an induced copper deficiency on the reproduction of SA Mutton Merino ewes). M.Sc. Dissertation: p174.
  2. Du Plessis, S.S. 1999. Organisational Liposuction. MBA Dissertation: p89.
  3. Du Plessis, SS. 2002. A study of the intracellular signaling events involved in the zona pellucida-induced acrosome reaction in human spermatozoa, PhD Dissertation: p 196.
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