Yeung, Ching-Hei

 

ChingHei.yeung@ukmuenster.de

 

Date of birth:                20.02.1951

 

Place of birth:              Hong Kong

 

Nationality:                   British

 

Marital status:              Married with one child

 

 

 

Education, employment  and research experience

 

1970-1974                   Undergraduate in Biology (major) and chemistry (minor),

                                    Chinese University of Hong Kong

                                    (1974 B.Sc. awarded with first class honours)

 

1975-1977                   Research in epididymal function, Department of Physiology,

                                    University of Hong Kong

                                    (M.Phil. thesis "Absorptive and secretory functions of the rat

                                    cauda epididymidis") Supervisor Prof. PYD Wong

 

1978                            M. Phil. degree conferred

 

1977-1980                   Research in physiology and morphology of the epididymis,

                                    Dept. Physiology & Biochemistry, University of Reading, UK.

                                    (PhD thesis "Physiological and morphological studies of the

                                    perfused epididymis") Supervisor Prof.G.M.H. Waites

 

1980                            Ph. D. degree conferred

 

1981-1983                   Research in sperm movement, Dept. Physiology, University

                                    of Bristol Medical School (ARC Postdoctoral Research

                                    Assistant)

 

1983-1984                   National Research Institute for Family Planning, Beijing,

                                    China. (Visiting scientist)

 

1985-1987                   Max Planck Society Clinical Research Unit for Reproductive

                                    Medicine, Münster, Germany (Max Planck Fellow)

 

1988-1989                   Max Planck Society Clinical Research Unit for Reproductive

                                    Medicine, Münster, Germany

 

1989 to present            Institute of Reproductive Medicine of the University,

Münster, Germany (Research Scientist)

 


Scientific Interests

Sperm function and maturation, epididymal function, contraception and infertility.

 

 

Membership of Scientific Societies

Society for the Study of Reproduction

New York Academy of Science

Research Defence Society

 

 

Reviewer for scientific journals and funding organisations

Journals:

            Human Reproduction Journals, J Cell Science, J. Androl., Int. Androl., Mol. Reprod. Dev., Eur. J. Biol.

Grants:

            DFG, National Science Foundation USA, University of Sienna, Italy.

 

 

Publications

in Scientific journals  --  120  (50 as first authors)

as book chapters  --  13   (3 as first authors)

 

 

Invited lectures and presentations

 

Development of sperm motility.

Symposium on the Epididymis - role and importance in male infertility treatment

Deauville, France. 1994

 

Effects of epididymal secretions on male rat fertility

National Research Institute of Family Planning, Beijing, China, 1995

 

Characterisation of the kinematics of maturing spermatozoa.

British Andrology Society, CASA (Computer Assisted Semen Analysis) Workshop, Castleton, England, 1996

 

A CASA technique for standardisation and quality control of subjective sperm motility assessment in conventional semen analysis.

European Society of Human Reproduction and Embryology (ESHRE) Campus Course, San Miniato, Italy, 1997

 

Computer-Assisted Semen Analysis.

The Finish Andrology Society, Turku, Finland, 1997

 

Receptor tyrosine kinase c-ros knockout mice as a model for the study of epididymal regulation of sperm function

Boden Conference, Robertson, Australia, 1998

 

Epididymis as the Target for Post-testicular Male Contraception

ESHRE Annual Conference, Götterburg, Sweden, 1998

 

Computer-assisted sperm anaylsis (CASA) and its application.

German Andrology Society, Giessen, Germany, 1999

 

The CD52-like epididymal secretory glycoprotein on sperm.

British Andrology Society, London, England , 1999

 

Modulation of sperm proteins during maturation.

The Epididymis Symposium, 4.Dies Andrologicus, Marburg, Germany, 2000

 

Epididymis-mediated sperm defects causing infertility – a transgenic model.

2nd Italian-German-Italian Symposium: Frontiers in Reproductive Medicine, Modena, Italy, 2000

 

Epididymal influence on male fertility: the c-ros knockout mouse model

Nordic Society for Andrology Annual Conference, Malmo, Sweden, 2000

 

c-ros receptor tyrosine kinase knockout mouse as a model of epididymal involvement in sperm maturation.

Pre-congress Andrology Course, European Society of Human Reproduction and Embryology (ESHRE), Lusanne, Switzerland, 2001

 

Cell volume regulation in mammalian spermatozoa

Plenary Lecture, 9th International Symposium on Spermatology, Cape Town, South Africa, 2002

 

Cell volume regulation – an indispensible sperm function in natural fertilization

Hong Kong Society of Endocrinology, Metabolism and Reproduction, and Department of Physiology, The Chinese University of Hong Kong.  Hong Kong, Jan. 2003


Publications

Kong, Y. C.; Yeung, H. W.; Cheung, Y. M.; Hwang, J. C.; Chan, Y. W.; Law, Y. P.; Ng, K. H., and Yeung, C. H. Isolation of the uterotonic principle from Leonurus artemisia, the Chinese motherwort. Am J Chin Med. 4, 373-82 (1976)

 

Wong, P.Y.D, Huang, J.C, Yeung, C.H.  Interaction between lanthanum and calcium in isolated guinea-pig heart. Eur. J. Pharmacol. 36, 253-256 (1976)

 

Wong, P.Y.D., Yeung, C.H.  Inhibition by amiloride of the sodium dependent fluid reabsorption in isolated rat cauda epididymidis. Brit. J. Pharmacol. 58, 529-532 (1976)

 

Wong, P.Y.D, Yeung, C.H.  Fluid reabsorption in isolated rat cauda epididymidis. J. Reprod. Fert, 49, 77-81 (1977)

 

Wong, P.Y.D., Yeung, C.H.  Inhibition of alpha-chlorohydrin of fluid reabsorption in the rat cauda epididymidis. J. Reprod. Fert., 51, 469-471 (1977)

 

Wong, P.Y.D., Yeung, C.H.  Hormonal regulation of fluid reabsorption in isolated rat cauda epididymidis. Endocrinol, 101, 1391-1397 (1977)

 

Wong, P.Y.D., Yeung, C.H.  Effect of _-chlorohydrin on transport processes in perfused rat cauda epididymidis. Contraception, 16, 637-644 (1977)

 

Wong, P.Y.D., Yeung, C.H.  Effect of catecholamines and adrenergic blockade on fluid reabsorption in isolated rat cauda epididymidis. Jap. J. Pharmacol. 28, 115-123 (1978)

 

Wong, P.Y.D., Yeung, C.H.  Absorptive and secretory functions of the perfused rat cauda epididymis. J. Physiol. 275, 13-26 (1978)

 

Wong, Y.C., Wong, P.Y.D., Yeung, C.H.  Ultrastructural correlation for water reabsorption in isolated rat cauda epididymidis. Experientia 34, 485-487 (1978)

 

Au, C.L., Ngai, H.K., Yeung, C.H., Wong, P.Y.D.  Effect of adrenalectomy and hormone replacement on sodium and water transport in the perfused rat cauda epididymidis. J. Endocrin. 77, 265-266 (1978)

 

Cooper, T.G., Yeung, C.H.  Epithelial structure of the rat cauda epididymidis after luminal perfusion. Int. J. Androl. 3, 367-374 (1980)

 

Yeung, C . H., Cooper, T. G., Waites, G.M.H.  Carnitine transport into the perfused epididymis of the rat: regional differences, stereospecificity, stimulation by choline, and the effect of other luminal factors. Biol. Reprod. 23, 294-304 (1980)

 

Yeung, C.H., Cooper, T.G.,  Ultrastructure of the perfused rat epididymis: the effect of luminal sodium ion concentration. Cell Tissue Res. 226, 407-425 (1982)

 

Yeung, C.H., Woolley, D.W.  Localised reactivation of the principal piece of demembranated hamster sperm by ionophoretic application of ATP.   J. Submicroscop. Cytol. 15, 327-331 (1983)

 

Yeung, C.H., Woolley, D.W.  A study of bend formation in locally reactivated hamster sperm flagella.  J. Muscle Res. Cell Motil. 4, 625-645 (1983)

 

Yeung, C.H., Woolley, D.W.  Three-dimensional bend propagation in hamster sperm models and the direction of roll in free-swimming cells. Cell Motility 4, 215-226 (1984)

 

Yeung, C.H.   Effect of cyclic AMP on the motility of mature and immature hamster epididymal spermatozoa studied by local reactivation of the demembranated cells.  Gamete Res. 9, 99-114 (1984)

 

Cooper, T. G., Yeung, C.H., Liu, W., Yang, C. Z.  Luminal secretion of myo-inositol by the rat epididymis perfused in vitro. J. Reprod. Fert. 74, 135-144 (1985).

 

Cooper, T. G., Yeung, C. H., Weinbauer, G. F.  Transport of carnitine by the epididymis of the cynomolgus macaque (Macaca fascicularis). J. Reprod. Fert. 77, 297-301 (1986).

 

Cooper, T. G., Gudermann, T. W., Yeung, C.-H.  Characteristics of the transport of carnitine into the cauda epididymidis of the rat as ascertained by luminal perfusion in vitro. Int. J. Androl. 9, 348-358 (1986).

 

Yeung, C. H.  Temporary inhibition of the initiation of motility of demembranated hamster sperm by high concentrations of ATP. Int. J. Androl. 9, 359-370 (1986).

 

Cooper, T. G., Yeung, C. H., Bergmann, M.  Protein transport to the epididymal lumen. Cell Tiss. Res. 248, 527-530 (1987).

 

Cooper, T. G., Yeung, C. H., Bergmann, M.  Ultrastructural evidence for transport of protein across the epithelium of the rat caput epididymidis. in “Cell Biology of the Testis and Epididymis”. Annals New York Acad Sci, 513, 538-540 (1987)

 

Knuth, U. A., Yeung, C. H., Nieschlag, E. Computerized semen analysis: objective measurement of semen characteristics is biased by subjective parameter setting.  Fertil Steril 48, 118-124. (1987)

 

Yeung, C. H.  Inhibition of the ATP-induced reactivation of demembranated hamster spermatozoa by the action of free ATP4- and ATP2-. J. Reprod. Fertil. 81, 195-203 (1987)

 

Cooper, T. G., Yeung, C. H., Bergmann, M.  Transcytosis in the epididymis studied by local arterial perfusion. Cell Tiss. Res. 253, 631-637 (1988).

 

Cooper, T. G., Gudermann, T. W., Yeung, C. H.  Transport of inositol into the distal cauda epididymidis of the rat. J. Androl. 9, 403-407 (1988).

 

Cooper, T. G., Yeung, C. H., Nashan, D., Nieschlag, E.  Epididymal markers in human infertility. J. Androl. 9, 91-101 (1988).

 

De Geyter, C., Bals-Pratsch, M., Doeren, M., Yeung, C. H., Grunert, J. H., Bordt, J., Schneider, H. P. G., Nieschlag, E.  Human and bovine cervical mucus penetration as a test of sperm function for in-vitro fertilization. Human Reproduction. 3, 948-954 (1988).

 

Yeung, C. H., Bals-Pratsch, M., Knuth, U. A., Neischlag, E.  Investigation of the cause of low sperm motility in asthenozoospermic patients by multiple quantitative tests. Int J. Androl. 11, 289-299 (1988).

 

Cooper, T. G., Yeung, C. H., Meyer, R.  Immature rat epididymal epithelial cells grown in static primary monolayer culture on permeable supports. I. Vectorial secretion. Cell Tiss. Res. 256, 567-572 (1989).

 

Knuth, U. A., Yeung, C. H., Nieschlag, E.  Combination of 19-nortesterone-hexyloxyphenylpropionate (Anadur)* and depot-medroxyprogesterone (Clinovir) for male contraception. Fert. Steril. 51, 1011-1018 (1989).

 

Yeung, C. H., Weinbauer, G. F., Nieschlag, E.  Movement characteristics of ejaculated sperm from Cynomolgus monkeys (Macaca fascicularis) analyzed by manual and automated computerised image analysis. J. med. Primatol. 18, 55-68 (1989).

 

Yeung, C. H., Cooper, T. G., Weinbauer, G. F., Bergmann, M., Kleinhans, G., Schulze, H., Nieschlag, E.  Fluid-phase transcytosis in the primate epididymis in vitro and in vivo. Int. J. Androl. 12, 384-394 (1989).

 

Yeung, C. H., Cooper, T. G., Meyer, R.  Immature rat epididymal epithelial cells grown in static primary monolayer culture on permeable supports. II. Histochemistry and  ultrastructure. Cell Tissue Res. 256, 573-580 (1989).

 

Cooper, T. G., Yeung, C. H., Nashan, D., Jockenhövel, F., Nieschlag, E.  Improvement in the assessment of human epididymal function by the use of inhibitors on the assay of a-glucosidase in seminal plasma. Int. J. Androl. 13, 297-305 (1990).

 

Cooper, T. G., Yeung, C. H., Nashan, D., von Bassewitz, D.-B., Nieschlag, E.  Nebenhodenfunktion bei patienten mit Maldescensus testis."Paediatrie aktuell.1. Maldescensus testis". Zuckschwert Verlag, Muenchen, 1990, 57-60.

 

Cooper, T. G., Yeung, C. H., Meyr, R., Schulze, H.  Maintenance of human epididymal epithelial cell function in  monolyer culture. J. Reprod. Fert. 90, 81-91 (1990).

 

Weinbauer, G. F., Jackwerth, B., Yoon, Y.-D., Behre, H. M., Yeung, C. H., Nieschlag, E.  Pharmacokinetics and pharmacodynamics of teststerone enanthate in non-human primates. Acta Endocr. (Copenh). 122, 432-442 (1990).

 

Yeung, C. H., Cooper, T. G., Senge, T.  Histochemical localization and quantification of a-glucosidase in the epididymis of men  and laboratory animals. Biol. Reprod. 42, 669-676 (1990).

 

Yeung, C. H., Krusemann, C., Bunn, H., Neuwinger, J., Nieschlag, E.  Evaluation of the semi-automated Autosperm* semen analysis system. I. Accuracy and comparison with the conventional method and the automated Hamilton-Thorn system. Fert. Steril. 53, 111-119 (1990).

 

Yeung, C.H., Bergmann, M., & Cooper, T.G.  Non-specific uptake of IgG by rat epididymal tubules in vitro. Int J Androl 14, 364-373 (1991)

 

Yeung, C.H., Cooper, T.G., Bergmann, M., & Schulze, H.  Organization of tubules in the human caput epididymidis and the ultrastructure of their epithelia. Am J Anat 191, 261-279 (1991).

 

Cooper, T.G., Raczek, S., Yeung, C.H., Schwab, E., Schulze, H.  The composition of fluid obtained from human epididymal cysts. Urol Research 20, 275-280 (1992).

 

Yeung, C.H., Oberländer, G., & Cooper, T.G.  Characterization of the motility of rat spermatozoa by computer-aided objective measurement. J Reprod Fert 96, 427-441 (1992)

 

Raczek, S, Yeung, C.H., Hertle, L., Schulze, H., Cooper, T.G.  Appearance and endocytic activity of epitheial cells from human efferent ducts in primary monolayer culture. Cell Tiss Res 270, 513-519 (1992)

 

Yeung, C.H., Cooper, T.G., Oberpenning, F., Schulze, H., Nieschlag, E.  Changes in movement characteristics of human spermatozoa along the length of the epididymis. Biol Reprod 49, 274-280 (1993)

 

Yeung, C.H., Nieschlag, E.  Performance and comparison of CASA systems equipped with different phase-contrast optics. J Androl 14, 222-228 (1993)

 

Meschede, D., Keck, C., Zander, M., Cooper, T.G., Yeung, C.H., Nieschlag, E.  Influence of three different preparation techniques on the results of human sperm morphology analysis. Int J Androl, 16, 362-369 (1993)

 

Oberländer, G., Yeung C.H., Cooper, T.G.  Effects of ornidazole on fertility, sperm motility and epididymal secretion of male rats. J Reprod Fert, 100: 551-559 (1994)

 

Yeung C.H., Nashan D, Sorg C, Oberpenning F, Schulze H, Nieschlag E, Cooper T.G.  Basal cells of the human epididymis - Antigenic and ultrastructural similarities to tissue fixed macrophages. Biol Reprod, 50: 917-926 (1994)

 

Yeung C.H., Oberländer, G., Cooper, T.G.  Maturation of hamster epididymal sperm motility and influence of the thiol status of hamster and rat spermatozoa on their motility patterns. Molec Reprod Develop, 38 347-355 (1994)

 

Perez-Sanchez, F., Cooper, T. G., Yeung, C. H., Nieschlag, E., Improvement in quality of cryopreserved human spermatozoa by  swim-up before freezing. International Journal of Andrology. 17, 115-120 (1994).

 

Soler, C., Yeung, C. H., Cooper, T. G., Development of sperm motility patterns in the murine epididymis. Int J Androl. 17, 271-278 (1994).

 

Yeung, C. H., Cooper, T. G., Study of the role of epididymal alpha-glucosidase in the  fertility of male rats by the administration of the enzyme  inhibitor castanospermine. Journal of Reproduction and Fertility. 102, 401-410 (1994).

 

Raczek, S., Yeung, C. H., Wagenfeld, A., Schulze, H., Cooper, T. G., Epithelial monolayers from human epididymal and efferent duct tubules, testosterone metabolism and effects of culture conditions on cell height and confluence. Epith cell Biol. 3, 126-136 (1994).

 

Pollanen, P., Saari, T., Yeung, C. H., Cooper, T. G., Regulation of the transport of immunoglobulin G into the male rat reproductive tract. J Reprod Immunol. 28, 111-135 (1994).

 

Yeung, C. H., Development of sperm motility. Hamamah, S., Mieusset, R., Dacheux, J.-L.(eds) "Epididymis: Role and importance in male infertility treatment. Frontiers in Endocrinology". Ares-Serono Symposia Publications, Rome, 1995, 73-86.

 

Raczek, S., Yeung, C. H., Hasilik, A., Robenek, H., Hertle, L., Schulze, H., Cooper, T. G., Immunocytochemical localisation of some lysosomal hydrolases, by their presence in luminal fluid and their directional secretion by human epididymal cells in culture. Cell Tissue Res. 280, 415-425 (1995).

 

Yeung, C. H., Oberländer, G., Cooper, T. G., Effects of the male antifertility agent ornidazole on sperm function in vitro and in the female genital tract. J Reprod Fertil. 103, 257-264 (1995).

 

Oberländer, G., Yeung, C. H., Cooper, T. G., Influence of oral administration of ornidazole on capacitation and the activity of some glycolytic enzymes of rat spermatozoa. J Reprod Fertil. 106, 231-239 (1996).

 

Yeung, C. H., Morrell, J. M., Cooper, T. G., Weinbauer, G. F., Hodges, J. K., Nieschlag, E., Maturation of sperm motility in the epididymis of the common marmoset (Callithrix jacchus) and the cynomologus monkey (Macaca fascicularis). Int J Androl. 19, 113-121 (1996).

 

Yeung, C. H., De Geyter, C., De Geyter, M., Nieschlag, E., Production of reactive oxygen species by and hydrogen peroxide scavenging activity of spermatozoa in an IVF program. J Assisted Reprod Genetics. 13, 495-500 (1996).

 

Yeung, C. H., Cooper, T. G., Weinbauer, G. F., Maturation of monkey spermatozoa in the epididymis with respect to their ability to undergo the acrosome reaction. J Androl. 17, 427-432 (1996).

 

Yeung, C. H., Spier, B., Cooper, T. G., Nieschlag, E. The effect of the bradykinin antagonist Hoe 140 on kinematic parameters of human spermatozoa. Int J Androl. 19, 143-149 (1996).

 

Perez-Sanchez, F., Tablado, L., Yeung, C. H., Cooper, T. G., Soler, C., Changes in the motility patterns of spermatozoa from the rabbit epididymis as assessed by computer aided sperm motion analysis. Mol Reprod Devel. 45, 364-371 (1996).

 

Yeung, C. H., Majumder, G. C., Rolf, C., Behre, H., Cooper, T. G., The role of phosphocreatine kinase in the motility of human spermatozoa supported by different metabolic substrates. Mol Human Reprod. 2, 591-596 (1996).

 

Cooper, T. G., Yeung, C. H.,  Physiologie der Spermienreifung und Fertilisation. In "Andrologie: Grundlagen und Klinik der Reproduktiven Gesundheit des Mannes" Chapter 4, Eds E. Neischlag, H.M. Behre, pp 65-84, Springer, Berlin, 1996

 

Behre, H. M., Yeung, C. H, Nieschlag, E,  Diagnostik der Infertilitat und des Hypogonadismus. In "Andrologie: Grundlagen und Klinik der Reproduktiven Gesundheit des Mannes" Chapter 6, Eds E. Neischlag, H.M. Behre, pp 91-120, Springer, Berlin, 1996

 

Cooper, T. G., Wang, X. S., Yeung, C. H., Lewin, L. M., Successful lowering of epididymal carnitine by administration of privalate to rats. Int J Androl 20, 180-188. (1997)

 

Yeung, C. H., Perez-Sanchez, F., Soler, C., Poser, D., Kliesch, S., Cooper, T. G., Maturation of human spermatozoa (from selected epididymides of prostatic carcinoma patients) with respect to their morphology and ability to undergo the acrosome reaction. Human Reprod Update 3, 205-213. (1997)

 

Yeung, C. H., Cooper, T. G., Nieschlag, E.,  A technique for standardization and quality control of subjective sperm motility assessments in semen analysis. Fert Steril. 67, 1156-1158 (1997)

 

Yeung, C. H., Schröter, S., Wagenfeld, A., Kirchhoff, C., Kliesch, S., Poser, D, Weinbauer, G. F., Nieschlag, E., Cooper, T. G.,   Interaction of the human epididymal protein CD52 (HE5) with epididymal spermatozoa from men and cynomolgus monkeys.  Mol Reprod Devel, 48, 267-275 (1997)

 

Yeung, C. H., Cooper, T. G., Nieschlag, E.,  Human epididymal secreted protein CD52 on ejaculated sperm: correlation with semen characteristics and the effect of its antibody.  Mol Human Reprod, 3, 1045-1051 (1997)

 

Cooper, T. G., Yeung, C. H.,  Physiology of Sperm Maturation and Fertilisation. In "Andrology: male reproductive health and dysfunction" Chapter 4, Eds E. Nieschlag, H.M. Behre, pp 61-80, Springer, Berlin, 1997

 

Behre, H. M., Yeung, C. H, Nieschlag, E,  Diagnosis of Infertility and Hypogonadism. In "Andrology: male reproductive health and dysfunction" Chapter 6, Eds E. Nieschlag, H.M. Behre, pp 97-114, Springer, Berlin, 1997

 

Bone, W., Yeung, C-H, Skupin, R., Haufe, G., Cooper, T. G., Toxicity of ornidazole and its analogues towards rat sperm as reflected in motility parameters. Int J Androl. 20, 347-355. (1997)

Pera, I., Derr, P., Yeung, C-H., Cooper, T,G., Kirchhoff,.C., Regionalized expression of CD52 in rat epididymis is related to mRNA ploy(A) tail length.  Mol Reprod Dev. 48, 433-441. (1997)

Kirchhoff, C., Pera, I., Derr, P., Yeung, C-H., Cooper, T. The molecular biology of the sperm surface. Post-testicular membrane remodelling. Adv Exp Med Biol  424, 221-232. (1997)

Schröter, S., Kirchhoff, C., Yeung, C-H., Cooper, T., Meyer, B. Purification and structureal analysis of sperm CD52, a GPI-anchored membrane protein. Adv Exp Med Biol  424, 233-234. (1997)

Cooper, T. G., Yeung, C-H., Skupin, R., Haufe, G., Antifertility potential of ornidazole analogues in rats. J Androl. 18, 431-438 (1997).

Yeung, C. H., Cooper, T. G., Schröter, S., Kirchhoff, C., Nieschlag, E., Epididymal secretion of CD52 as measured in human seminal plasma by a fluorescence immunoassay. Mol Human Reprod  4, 447-451 (1998).

 

Wagenfeld,.A., Yeung, C-H., Strupat, K., Cooper, T. G.,  Shedding of a rat epididymal sperm protein associated with infertility induced by ornidazole and a-chlorohydrin. Biol Reprod 58, 1257-1265 (1998).

Gago, C., Perez-Sanchez, P., Yeung, C.H., Tablado, L., Cooper, T.G., Soler, C. Standardization of sampling and staining methods for the morphometric evaluation of sperm heads in the Cynomolgous monkey (Macaca fascicularis) using computer-assisted image analysis. Int J Androl 21, 169-176 (1998).

Seiler, P., Wenzel, I., Wagenfeld, A., Yeung, C-H., Nieschlag, E., Cooper, T.G. The appearance of basal cells in the developing murine epididymis and their temporal expression of macrophage antigens. Int J Androl. 21, 217-226 (1998).

Weinbauer, G.F., Schubert, J., Yeung, C.H., Rosiepen, G., Nieschlag, E. Gonadotrophin-releasing hormone antagonist arrests premeiotic germ cell proliferation but does not inhibit meiosis in the male monkey: a quantitative analysis using 5-bromodeoxyuridine and dual parameter flow cytometry. J Endocrin. 156, 23-34 (1998).

Yeung, C.H., Cooper, T.G., DeGeyter, M., DeGeyter, C., Rolf, C., Kamischke, A., Nieschlag, E. Studies on the origin of redox enzymes in seminal plasma and their relationship with results of in-vitro fertilization. Mol Human Reprod. 4, 835-839 (1998).

Yeung, C.H., Sonnenberg-Riethmacher, E., Cooper, T.G. Receptor tyrosine kinase c-ros knockout mice as a model for the study of epididymal regulation of sperm. J Reprod Fertil Suppl. 53, 137-147 (1998)

 

Cooper, T.G., Yeung, C-H. A flow cytometric technique using peanut agglutinin for evaluating acrosomal loss from human spermatozoa. J Androl. 19, 542-550 (1998).

Krishnamurthy, H., Weinbauer, G.F., Aslam, H., Yeung, C-H., Nieschlag, E. Quantification of apoptotic testicular germ cells in normal and methoxyacetic acid-treated mice as determined by flow cytometry. J Androl.19, 710-717 (1998).

Cooper, T.G., Yeung, C.H. Approaches to post-testicular contraception. Asian J Androl. 1, 29-36.(1999).


Pulications in the last 5 years

Cooper, T.G., Yeung, C.H. Recent biochemical approaches to post-testicular, epididymal contraception. Human Reprod Update. 5, 141-152.(1999).

Cooper TG and Yeung C-H  Sperm maturation in the primate epididymis. In: Reproduction in nonhuman primate. Ed. GF Weinbauer, R Korte. Waxmann Verlag, Münster. pp 61-78 (1999).

Gago, C., Tablado, L., Yeung, C.-H., Cooper, T.G., Soler, C. Morphological characterization of ejaculated monkey (Macaca fascicularis) spermatozoa. Am J Primatol. 47, 105-115.(1999).

Rolf, C., Cooper, T.G., Yeung, C.H., Nieschlag, E. Antioxidant treatment of patients with asthenozoospermia or moderate oligoasthenozoospermia with high-dose vitamin C and vitamin E: a randomized, placebo-controlled, double-blind study. Human Reprod. 14, 1028-1033.(1999).

Yeung, C.H., Sonnenberg-Riethmacher, E., Cooper, T.G. Infertile Spermatozoa of c-ros tyrosine kinase receptor knockout mice show flagellar angulation and maturational defects in cell volume regulatory mechanisms. Biol Reprod. 61, 1062-1069.(1999).

Yeung, C.-H., Weinbauer, G.F., Cooper, T.G. Effect of acute androgen withdrawal by GnRH antagonist on epididymal sperm motility and morphology in the cynomolgus monkey. J Androl. 20, 72-79.(1999).

Yeung, C.-H., Weinbauer, G.F., Cooper, T.G. Responses of monkey epididymal sperm of different maturational status to second messengers mediating protein tyrosine phosphorylation, acrosome reaction, and motility. Mol Reprod Devel. 54, 194-202.(1999).

Seiler, P., Cooper, T.G., Yeung, C.H., Nieschlag, E.  Regional variation in macrophage antigen expression by murine epididymal basal cells and their regulation by testicular factors. J Androl 20, 738-746. (1999)

 

Bone, W., Jones, N.G., Kamp, G., Yeung, C.H., Cooper, T.G. The antifertility effect of ornidazole in male rats: inhibition of a glycolysis-related motility pattern and zona binding required for fertilisation in vitro. J Reprod Fert, 118, 127-137 (2000).

 

Cooper, T.G., Weydert, S., Yeung, C.-H., Künzl, C., Nieschlag, E., Sachser, N. Maturation of epididymal spermatozoa in the non-domesticated guinea pigs Cavia aperea and Galea musteloides, J Androl, 21, 154-163 (2000).

 

Soler, C., Perez-Sanchez, F., Schulze, H., Bergmann, M., Oberpenning, F., Yeung, C.H., Cooper, T.G.  Objective evaluation of the morphology of human epididymal sperm heads. Int J Androl, 23, 77-84 (2000).

 

Gago, C., Soler, C., Perez-Sanchez, P., Yeung, C.H., and Cooper, T.G. Effect of cetrorelix on sperm morphology during migration through the epididymis in the Cynomolgous Macaque (Macaca fascicularis) . Am J Primatol, 51:103-117 (2000).

 

Yeung, C.H., Wagenfeld, A., Nieschlag, E., Cooper, T.G. The Cause of Infertility of Male c-ros Tyrosine Kinase Receptor Knockout Mice.  Biol Reprod. 63:612-618  (2000)

 

Yeung, C.H., Schröter, S., Kirchhoff, C., Cooper, T.G. Maturational changes of the CD52-like epididymal glycoprotein on cynomolgus monkey sperm and their apparent reversal in capacitation conditions. Mol Reprod Dev,  57:280-289 (2000)

 

Cooper, T. G., Yeung, C. H.,  Physiologie der Spermienreifung und Fertilisation. In "Andrologie: Grundlagen und Klinik der Reproduktiven Gesundheit des Mannes", 2. Auflage, Chapter 4, Eds E. Neischlag, H.M. Behre, pp 69-90, Springer, Berlin (2000)

 

Behre, H. M., Yeung, C. H, Nieschlag, E,  Diagnostik der Infertilitat und des Hypogonadismus. In "Andrologie: Grundlagen und Klinik der Reproduktiven Gesundheit des Mannes", 2. Auflage, Chapter 6, Eds E. Neischlag, H.M. Behre, pp 137-157, Springer, Berlin (2000)

 

Cooper, T. G., Yeung, C. H.,  Physiology of Sperm Maturation and Fertilisation. In "Andrology: male reproductive health and dysfunction", 2nd Ed. Chapter 4, Eds E. Nieschlag, H.M. Behre, pp 63-82, Springer, Berlin (2000)

 

Behre, H. M., Yeung, C. H, Nieschlag, E,  Diagnosis of Infertility and Hypogonadism. In "Andrology: male reproductive health and dysfunction", 2nd Ed. Chapter 6, Eds E. Nieschlag, H.M. Behre, pp 90-124, Springer, Berlin (2000)

 

Yeung, C. H.  Modulation of sperm proteins during maturation. Andrologia 32:369-369 (2000)

 

Derr, P., Yeung, C.H., Cooper, T.G., Kirchhoff, C.  Synthesis and glycoslation of CD52, the major ‘maturation-associated’ antigen of rat spermatozoa, in the cauda epididymidis. Reproduction 121:435-446 (2001)

 

Yeung, C.H. and Cooper, T.G. Effects of the ion-channel blocker quinine on human sperm volume, kinematics and mucus penetration, and the involvement of potassium channels.  Molecular Human Reproduction 7:819-828 (2001)

 

Yeung, C.H., Perez-Sanchez, F., Schroter, S., Kirchhoff, C. and Cooper, T.G. Changes of the major sperm maturation-associated epididymal protein HE5 (CD52) on human ejaculated spermatozoa during incubation.  Mol Hum Reprod 7:617-24 (2001)

 

Cooper, T.G., Yeung, C.H., Jones, R., Orgebin-Crist, M.-C. and Robaire, B. Rebuttal of a role for the epididymis in sperm quality control by phagocytosis of defective sperm. J Cell Sci 115:5 (2002)

 

Sipila, P., Cooper, T.G., Yeung, C.H., Mustonen, M., Penttinen, J., Drevet, J., Huhtaniemi, I. and Poutanen, M. Epididymal dysfunction initiated by the expression of Simian Virus 40 T-antigen leads to angulated sperm flagella and infertility in transgenic mice. Mol Endocrin, 16:2603-2617 (2002)

 

Wagenfeld, A., Yeung, C.H., Lehnert, W., Nieschlag, E. and Cooper, T.G. Lack of glutamate transporter EAAC1 in the epididymis of infertile c-ros receptor tyrosine-kinase deficient mice.  J Androl 23:772-782 (2002)

 

Yeung, C.H., Anapolski, M., Sipilä, P., Wagenfeld, A., Poutanen, M., Huhtaniemi, I., Nieschlag, E. and Cooper, T.G. Sperm volume regulation - Maturational changes in fertile and infertile transgenic mice and association with kinematics and tail angulation.  Biol Reprod 67:269-275 (2002)

 

Yeung, C.H., Anapolski, M., and Cooper, T.G. Measurement of volume changes in mouse spermatozoa using an electronic sizing analyser and a flow cytometer - validation and application to an infertile mouse model.  J Androl 23:522-528 (2002)

 

Yeung, C.H. and Cooper, T.G. Acquisition and development of sperm motility upon maturation in the epididymis. In The Epididymis: From Molecular to Clinical Practice. Eds. B. Robaire and B. Hinton, Kluwer Academic / Plenum Publishers, New York. 417-434 (2002)

 

Yeung, C.H., Anapolski, M., and Cooper, T.G. Cell volume regulation of mammalian spermatozoa. G. Van de Horst, D. Franken, R. Bornman, R. (eds), Proceedings of 9th International Symposium on Spermatology. Eds. Monduzzi Editore, Bologna, Italy, pp. 167-172 (2002)

Xu, Y.X., Wagenfeld, A., Yeung, C.H., Lehnert, W., Nieschlag, E., Cooper, T.G. Expression and location of the taurine transporter in the epididymis of infertile c-ros receptor tyrosine kinase-deficient and fertile heterozygous mice. Mol Reprod Develop 64:144-151 (2003)

 

Cooper, T.G. and Yeung, C.H. Acquisition of volume regulatory response of sperm upon maturation in the epididymis and the role of the cytoplasmic droplet. In Epididymis: Microscopy Reseach and Technique 61:28-38 (2003)

Yeung, C.H., Anapolski, M., Depenbusch, M., Zitzmann, M. and Cooper, T.G. Human sperm volume regulation.  Response to physiological changes in osmolality, channel blockers and potential sperm osmolytes. Human Reproduction 18:1029-1036 (2003)

 

Xu, Y., Yeung, C.H., Setiawan, I., Avram, C., Biber, J, Wagefeld, A., Lang, F. and Cooper, T.G.  Sodium-inorganic phosphate cotransporter NaPi-IIb in the epididymis and its potential role in male fertility studied in a transgenic mouse model. Biol Reprod, in press 69:1135-1141 (2003)

Yeung, C.H. and Cooper, T.G.  Developmental changes in signalling transduction factors in maturing sperm during epididymal transit. Cell Mol Biol 49:341-349 (2003)

 

Andersen O.M., Yeung C.H., Vorum H., Wellner M., Andreassen T.K., Erdmann B., Mueller E.C., Herz J., Otto A., Cooper T.G., and Willnow T.E. Essential role of the apolipoprotein E receptor-2 in sperm development. J Biol Chem. 278:23989-95 (2003)

Cooper T.G., Wagenfeld A., Cornwall G.A., Hsia N., Chu S.T., Orgebin-Crist M.-C., Drevel J., Vernet P.A.C., Nieschlag E., and Yeung C.H. Gene and protein expression in the epididymis of infertile c-ros receptor tyrosine kinase-deficient mice. Biol Reprod 69:1750-1762 (2003)

Kamischke A., Kuhlmann M., Weinbauer G.F., Luetjens M., Yeung C.H., Kronholz H.L., Nieschlag, and E Gonadal protection from radiation by GnRH antagonist or recombinant human FSH: a controlled trial in a male nonhuman primate (Macaca fascicularis). J Endocrinol 179:183-194 (2003)

Yeung C.H., Anapolski M., Setiawan I., Lang F., and Cooper T.G. Effects of putative epididymal osmolytes on sperm volume regulation of fertile and infertile c-ros transgenic Mice. J Androl 25:216-23 (2004)

Cooper T. and Yeung C.H. Approaches to post-testicular contraception: Insights from the infertile c-ros knockout mouse. In The Third International Conference on the Epididymis (ed. Hinton B.T. and Turner T.T.) The Van Doren Company, Charlottesville. In press (2004)

Cooper T.G., Yeung C.H., Wagenfeld A., Nieschlag E., Poutanen M., Huhtaniemi I., and Sipila P. Mouse models of infertility due to swollen spermatozoa. Mol Cell Endocrin. 216:55-63 (2004)

Yeung, C.H., Breton, S., Setiawan, I. Xu Y.,  Lang F.and Cooper T.G. Increased luminal pH in the epididymis of infertile c-ros knockout mice and the expression of  sodium-hydrogen exchangers and vacuolar proton pump H+-ATPase . Mol Reprod Dev. 68:159-168 (2004)

Avram, C., Yeung, C.H., Nieschalg, E., Cooper, T.G. Regulation of the initial segment of the murine epididymis by dihydrotestosterone and testicular exocrine secretions studied by expression of specific proteins and gene expression. Cell Tissue Research. 317:13-22 (2004)

Yeung C.H., Barfield, J., Anapolski M. and Cooper T.G.  Volume regulation of mature and immature spermatozoa in a primate model and possible ion channels involved. Human Reproduction. 19:2587-2593 (2004)

 


Communications at Conferences

 

Movement characteristics of human spermatozoa along the length of the epididymidis.

Annual Conference of the Society for the Study of Fertility, Cambridge, UK, 1993

 

Changes in sperm movement parameters upon maturation in the epididymis of mice and cynomolgous monkeys.

7th International Spermatology Symposium, Cairns, Australia, 1994

 

Study of the role of epididymal -glucosidase in the fertility of male rats by the administration of castanospermine.

7th International Spermatology Symposium, Cairns, Australia, 1994

 

Response of monkey epididymal sperm of different maturational status to secondary messengers mediating protein tyrosine kinase phosphorylation, acrosome reaction and motility.

Society for the Study of Reproduction, Pullman, USA, 1999

 

Regulation of human sperm volume.

International Congress of Andrology, Montreal, Canada, 2001