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Daniel Franken

This is a preview profile on BiomedExperts - the first literature-based scientific social network. It brings the right researchers together and allows them to collaborate online. Collexis and Dell provide the BiomedExperts network of +1.5 Million pre-calculated profiles free of charge to researchers worldwide.

Research Profile (preview)

Anatomy

Physiology

Disorders

Living Beings

Concepts & Ideas

Sperm Count

Chemicals & Drugs

Phenomena

Fertilization

Procedures

Gamete Intrafallopian Transfer

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Network (preview)

Co-Publications
Name
39
Kruger, Thinus
26
Oehninger, Sergio
18
Hodgen, Gary
11
Menkveld, Roelof
11
Coddington, CC
8
Bastiaan, Hadley
7
Windt, Marie-Lena
6
Henkel, Ralf
6
Acosta, Aníbal
5
Lombard, Carl
4
Schill, Wolf-Bernhard
3
Coetzee, K
3
Kolm, P
2
Bouic, PJ
2
Sekadde-Kigondu, Christine

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Publications

TOP 3
Franken D R; Avari K; Palshetkar N
Morphology training is compulsory to ensure relevant clinical results.
Franken D R; Dada O A
Does training assist medical laboratory scientists with better evaluation of sperm morphology?
Bastiaan H; Franken D
The influence of homogenous zona pellucida on human spermatozoa hyperactivation, acrosome reaction and zona binding.

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All Publications

2008: Franken D R; Avari K; Palshetkar N
Morphology training is compulsory to ensure relevant clinical results.
Andrologia 2008;40(6):377-80.
2007: Franken D R; Dada O A
Does training assist medical laboratory scientists with better evaluation of sperm morphology?
African journal of reproductive health 2007;11(1):107-12.
2007: Bastiaan H; Franken D
The influence of homogenous zona pellucida on human spermatozoa hyperactivation, acrosome reaction and zona binding.
Andrologia 2007;39(1):7-11.
2006: Franken D R; Kruger T F
Lessons learned from a sperm morphology quality control programme.
Andrologia 2006;38(6):225-9.
2006: Franken Daniel R; Oehninger Sergio
The clinical significance of sperm-zona pellucida binding: 17 years later.
Frontiers in bioscience : a journal and virtual library 2006;11():1227-33.
2005: Franken D R; Dada O A
The establishment of sperm morphology satellite training laboratories in Africa.
Andrologia 2005;37(2-3):57-60.
2003: Franken Daniel R; Menkveld Roelof; Kruger Thinus F; Sekadde-Kigondu Christine; Lombard Carl
Monitoring technologist reading skills in a sperm morphology quality control program.
Fertility and sterility 2003;79 Suppl 3():1637-43.
2003: Bastiaan Hadley S; Windt Mari Lena; Menkveld Roelof; Kruger Thinus F; Oehninger Sergio; Franken Daniel R
Relationship between zona pellucida-induced acrosome reaction, sperm morphology, sperm-zona pellucida binding, and in vitro fertilization.
Fertility and sterility 2003;79(1):49-55.
2002: Schuffner Alessandro A; Bastiaan Hadley S; Duran Hakan E; Lin Zin-Yong; Morshedi Mahmood; Franken Daniel R; Oehninger Sergio
Zona pellucida-induced acrosome reaction in human sperm: dependency on activation of pertussis toxin-sensitive G(i) protein and extracellular calcium, and priming effect of progesterone and follicular fluid.
Molecular human reproduction 2002;8(8):722-7.
2002: Bastiaan H S; Menkveld R; Oehninger S; Franken D R
Zona pellucida induced acrosome reaction, sperm morphology, and sperm-zona binding assessments among subfertile men.
Journal of assisted reproduction and genetics 2002;19(7):329-34.
2001: Henkel R; Finkenzeller C; Monsees T; Franken D R; Schill W B; Miska W
Development of a new, highly sensitive zona pellucida binding assay using a bioluminescence-enhanced detection system.
Andrologia 2001;33(4):215-21.
2000: Franken D R; Barendsen R; Kruger T F
A continuous quality control program for strict sperm morphology.
Fertility and sterility 2000;74(4):721-4.
2000: Franken D R; Bastiaan H S; Oehninger S C
Physiological induction of the acrosome reaction in human sperm: validation of a microassay using minimal volumes of solubilized, homologous zona pellucida.
Journal of assisted reproduction and genetics 2000;17(7):374-8.
2000: Franken D R; Bastiaan H S; Oehninger S C
Physiological induction of the acrosome reaction in human sperm: validation of a microassay using minimal volumes of solubilized, homologous zona pellucida.
Journal of assisted reproduction and genetics 2000;17(3):156-61.
2000: Oehninger S; Franken D R; Sayed E; Barroso G; Kolm P
Sperm function assays and their predictive value for fertilization outcome in IVF therapy: a meta-analysis.
Human reproduction update 2000;6(2):160-8.
2000: Franken D R; Smith M; Menkveld R; Kruger T F; Sekadde-Kigondu C; Mbizvo M; Akande E O
The development of a continuous quality control programme for strict sperm morphology among sub-Saharan African laboratories.
Human reproduction (Oxford, England) 2000;15(3):667-71.
1999: Franken D R; Franken C J; de la Guerre H; de Villiers A
Normal sperm morphology and chromatin packaging: comparison between aniline blue and chromomycin A3 staining.
Andrologia 1999;31(6):361-6.
1999: Bastiaan H; Franken D; Wranz P
G-protein regulation of the solubilized human zona pellucida-mediated acrosome reaction and zona pellucida binding.
Journal of assisted reproduction and genetics 1999;16(6):332-6.
1999: Henkel R; Müller C; Stalf T; Schill W B; Franken D R
Use of failed-fertilized oocytes for diagnostic zona binding purposes after sperm binding improvement with a modified medium.
Journal of assisted reproduction and genetics 1999;16(1):24-9.
1998: Henkel R; Franken D R; Habenicht U F
Zona pellucida as physiological trigger for the induction of acrosome reaction.
Andrologia 1998;30(4-5):275-80.
1998: Franken D R
New aspects of sperm-zona pellucida binding.
Andrologia 1998;30(4-5):263-8.
1997: Franken D R; Bastiaan H S; Kidson A; Wranz P; Habenicht U F
Zona pellucida mediated acrosome reaction and sperm morphology.
Andrologia 1997;29(6):311-7.
1997: Oehninger S; Mahony M; Ozgür K; Kolm P; Kruger T; Franken D
Clinical significance of human sperm-zona pellucida binding.
Fertility and sterility 1997;67(6):1121-7.
1997: Oehninger S; Franken D; Kruger T
Approaching the next millennium: how should we manage andrology diagnosis in the intracytoplasmic sperm injection era?
Fertility and sterility 1997;67(3):434-6.
1997: Gabriel L K; Franken D R
Binding of human spermatozoa to lectin-coated agarose microbeads.
Archives of andrology 1997;38(2):133-41.
1996: Ozgür K; Franken D R
The influence of sperm/zona pellucida collision rates on zona binding.
Andrologia 1996;28(5):261-5.
1996: Kruger T F; Lacquet F A; Sarmiento C A; Menkveld R; Ozgür K; Lombard C J; Franken D R
A prospective study on the predictive value of normal sperm morphology as evaluated by computer (IVOS).
Fertility and sterility 1996;66(2):285-91.
1996: Windt M L; Franken D R; Kruger T F; Oehninger S C
In vitro fertilization failure: identification of gamete defects by investigation of sperm-zona pellucida binding capacity of unfertilized oocytes.
Andrologia 1996;28(4):211-5.
1996: Franken D R; Henkel R; Kaskar K; Habenicht U F
Defining bioassay conditions to evaluate sperm/zona interaction: inhibition of zona binding mediated by solubilized human zona pellucida.
Journal of assisted reproduction and genetics 1996;13(4):329-32.
1996: Claassens O E; Kaskar K; Coetzee K; Lombard C J; Franken D R; Kruger T F
Comparison of motility characteristics and normal sperm morphology of human semen samples separated by percoll density gradient centrifugation.
Archives of andrology 1996;36(2):127-32.
1996: Menkveld R; Rhemrev J P; Franken D R; Vermeiden J P; Kruger T F
Acrosomal morphology as a novel criterion for male fertility diagnosis: relation with acrosin activity, morphology (strict criteria), and fertilization in vitro.
Fertility and sterility 1996;65(3):637-44.
1995: Henkel R; Cooper S; Kaskar K; Schill W B; Habenicht U F; Franken D R
Influence of elevated pH levels on structural and functional characteristics of the human zona pellucida: functional morphological aspects.
Journal of assisted reproduction and genetics 1995;12(9):644-9.
1995: Ozgür K; Franken D R; Kaskar K; Gabriel L K; Kruger T F
The influence of a mineral oil overlay on the zona pellucida binding potential of human spermatozoa.
Andrologia 1995;27(3):155-9.
1995: Claassens O E; Oosthuizen C J; Brusnicky J; Franken D R; Kruger T F
Fluorescent in situ hybridization evaluation of human Y-bearing spermatozoa separated by albumin density gradients.
Fertility and sterility 1995;63(2):417-8.
1994: Ozgür K; Franken D R; Kaskar K; Lombard C J; Kruger T F
Development of a predictive model for optimal zona pellucida binding using insemination volume and sperm concentration.
Fertility and sterility 1994;62(4):845-9.
1994: Acosta A A; van der Merwe J P; Doncel G; Kruger T F; Sayilgan A; Franken D R; Kolm P
Fertilization efficiency of morphologically abnormal spermatozoa in assisted reproduction is further impaired by antisperm antibodies on the male partner's sperm.
Fertility and sterility 1994;62(4):826-33.
1994: Franken D R; Kruger T F; Oehninger S C; Kaskar K; Hodgen G D
Sperm binding capacity of human zona pellucida derived from oocytes obtained from different sources.
Andrologia 1994;26(5):277-81.
1994: Henkel R R; Franken D R; Lombard C J; Schill W B
Selective capacity of glass-wool filtration for the separation of human spermatozoa with condensed chromatin: a possible therapeutic modality for male-factor cases?
Journal of assisted reproduction and genetics 1994;11(8):395-400.
1994: Morales P; Vigil P; Franken D R; Kaskar K; Coetzee K; Kruger T F
Sperm-oocyte interaction: studies on the kinetics of zona pellucida binding and acrosome reaction of human spermatozoa.
Andrologia 1994;26(3):131-7.
1994: Coddington C C; Oehninger S C; Olive D L; Franken D R; Kruger T F; Hodgen G D
Hemizona index (HZI) demonstrates excellent predictability when evaluating sperm fertilizing capacity in in vitro fertilization patients.
Journal of andrology 1994;15(3):250-4.
1994: Kaskar K; Franken D R; van der Horst G; Kruger T F
The effect of pentoxifylline on sperm movement characteristics and zona pellucida binding potential of teratozoospermic men.
Human reproduction (Oxford, England) 1994;9(3):477-81.
1994: Windt M L; De Beer P M; Franken D R; Rhemrev J; Menkveld R; Lombard C J; Kruger T F
Sperm decondensation and semen parameters: utilization of a simple staining technique for the evaluation of human sperm decondensation.
Andrologia 1994;26(2):67-72.
1994: Kaskar K; Franken D R; van der Horst G; Oehninger S; Kruger T F; Hodgen G D
The relationship between morphology, motility and zona pellucida binding potential of human spermatozoa.
Andrologia 1994;26(1):1-4.
1993: Kruger T F; Franken D R; Stander E; Swart Y; Van der Merwe J P
Effect of semen characteristics on pregnancy rate in a gamete intrafallopian transfer program.
Archives of andrology 1993;31(2):127-31.
1993: Franken D R; Acosta A A; Kruger T F; Lombard C J; Oehninger S; Hodgen G D
The hemizona assay: its role in identifying male factor infertility in assisted reproduction.
Fertility and sterility 1993;59(5):1075-80.
1993: Kruger T F; DuToit T C; Franken D R; Acosta A A; Oehninger S C; Menkveld R; Lombard C J
A new computerized method of reading sperm morphology (strict criteria) is as efficient as technician reading.
Fertility and sterility 1993;59(1):202-9.
1992: Coetzee K; Franken D R; Kruger T F; Lombard C J
Effect of multiple centrifugations on the evaluation of the acrosome reaction in human spermatozoa.
Andrologia 1992;24(6):331-4.
1992: Oehninger S; Franken D; Alexander N; Hodgen G D
Hemizona assay and its impact on the identification and treatment of human sperm dysfunctions.
Andrologia 1992;24(6):307-21.
1992: Windt M L; de Beer P M; Franken D R; Kruger T F; Bouic P J
The influence of solubilized porcine zona pellucida protein on the binding capacity of human spermatozoa.
Human reproduction (Oxford, England) 1992;7(8):1150-3.
1992: Claassens O E; Menkveld R; Franken D R; Pretorius E; Swart Y; Lombard C J; Kruger T F
The Acridine Orange test: determining the relationship between sperm morphology and fertilization in vitro.
Human reproduction (Oxford, England) 1992;7(2):242-7.
1991: Menkveld R; Franken D R; Kruger T F; Oehninger S; Hodgen G D
Sperm selection capacity of the human zona pellucida.
Molecular reproduction and development 1991;30(4):346-52.
1991: Franken D R; Coddington C C; Burkman L J; Oosthuizen W T; Oehninger S C; Kruger T F; Hodgen G D
Defining the valid hemizona assay: accounting for binding variability within zonae pellucidae and within semen samples from fertile males.
Fertility and sterility 1991;56(6):1156-61.
1991: Franken D R; Windt M L; Kruger T F; Oehninger S; Hodgen G D
Comparison of sperm binding potential of uninseminated, inseminated-unfertilized, and fertilized-noncleaved human oocytes under hemizona assay conditions.
Molecular reproduction and development 1991;30(1):56-61.
1991: Franken D; Windt M L; Oosthuizen T; Kruger T; Menkveld R; Coddington C; Hodgen G D
Assisted reproductive technologies may obviate apparent immunologic infertility.
Andrologia 1991;23(4):291-5.
1991: Oehninger S; Veeck L; Franken D; Kruger T F; Acosta A A; Hodgen G D
Human preovulatory oocytes have a higher sperm-binding ability than immature oocytes under hemizona assay conditions: evidence supporting the concept of "zona maturation".
Fertility and sterility 1991;55(6):1165-70.
1991: Windt M L; Franken D R; de Beer P M; Bouic P J; Kruger T F
The hemizona assay (HZA) as an experimental model to evaluate the inhibition of sperm binding to the murine zona pellucida by isolated zona pellucida protein.
Andrologia 1991;23(3):209-12.
1991: Franken D R; Oosthuizen W T; Cooper S; Kruger T F; Burkman L J; Coddington C C; Hodgen G D
Electron microscopic evidence on the acrosomal status of bound sperm and their penetration into human hemizonae pellucida after storage in a buffered salt solution.
Andrologia 1991;23(3):205-8.
1991: Coddington C C; Franken D R; Burkman L J; Oosthuizen W T; Kruger T; Hodgen G D
Functional aspects of human sperm binding to the zona pellucida using the hemizona assay.
Journal of andrology 1991;12(1):1-8.
1991: Oehninger S; Franken D; Kruger T; Toner J P; Acosta A A; Hodgen G D
Hemizona assay: sperm defect analysis, a diagnostic method for assessment of human sperm-oocyte interactions, and predictive value for fertilization outcome.
Annals of the New York Academy of Sciences 1991;626():111-24.
1990: Franken D R; Kruger T F; Menkveld R; Oehninger S; Coddington C C; Hodgen G D
Hemizona assay and teratozoospermia: increasing sperm insemination concentrations to enhance zona pellucida binding.
Fertility and sterility 1990;54(3):497-503.
1989: Pretorius E; Franken D
The predictive value of the postcoital test for auto- and isoimmunity to spermatozoa.
Andrologia 1989;21(6):584-8.
1989: Oehninger S; Scott R T; Coddington C C; Franken D R; Acosta A A; Hodgen G D
Validation of the hemizona assay in a monkey model: influence of oocyte maturational stages.
Fertility and sterility 1989;51(5):881-5.
1989: Franken D R; Oehninger S; Burkman L J; Coddington C C; Kruger T F; Rosenwaks Z; Acosta A A; Hodgen G D
The hemizona assay (HZA): a predictor of human sperm fertilizing potential in in vitro fertilization (IVF) treatment.
Journal of in vitro fertilization and embryo transfer : IVF 1989;6(1):44-50.
1989: Franken D R; Burkman L J; Oehninger S C; Coddington C C; Veeck L L; Kruger T F; Rosenwaks Z; Hodgen G D
Hemizona assay using salt-stored human oocytes: evaluation of zona pellucida capacity for binding human spermatozoa.
Gamete research 1989;22(1):15-26.
1989: Hamlett D K; Franken D R; Cronje H S; Luus H
Murine oocyte cryopreservation: comparison between fertilization success rates of fresh and frozen metaphase I and II oocytes.
Archives of andrology 1989;23(1):27-31.
1989: Pretorius E; Franken D
Sperm antibodies, semen quality, and male infertility.
Archives of andrology 1989;22(1):61-5.
1988: Hodgen G D; Burkman L J; Coddington C C; Franken D R; Oehninger S C; Kruger T F; Rosenwaks Z
The hemizona assay (HZA): finding sperm that have the "right stuff".
Journal of in vitro fertilization and embryo transfer : IVF 1988;5(6):311-3.
1988: Franken D R; Grobler S; Pretorius E
The SCMC test: a reliable monitor for antispermatozoal antibodies.
Human reproduction (Oxford, England) 1988;3(5):607-9.
1988: Burkman L J; Coddington C C; Franken D R; Krugen T F; Rosenwaks Z; Hogen G D
The hemizona assay (HZA): development of a diagnostic test for the binding of human spermatozoa to the human hemizona pellucida to predict fertilization potential.
Fertility and sterility 1988;49(4):688-97.
1988: Pretorius E; Franken D R
The immunobead technique: an indicator of disturbed sperm cervical mucus interaction.
Andrologia 1988;20(1):5-9.
1987: Wessels P H; Franken D R; Pretorius E; Cronjé H S; Burchell H J
Gamete intrafallopian transfer: a treatment for long-standing infertility.
Journal of in vitro fertilization and embryo transfer : IVF 1987;4(5):256-9.
1987: Franken D R; Grobler S; Pretorius E
The SCMC test: a accurate indicator for spermatozoal antibodies.
Andrologia 1987;19 Spec No():296-301.
1987: Pretorius E; Franken D R; Shulman S
The immunobead test as a sperm antibody detector.
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1987;71(10):650-1.
1986: Pretorius E; Franken D R; Shulman S; Gloeb J
Sperm/cervical mucus contact test compared to immunobead test for sperm antibodies.
Archives of andrology 1986;17(2):139-42.
1986: Franken D R; Grobler S; Pretorius E
Sperm/cervical mucus contact test for sperm antibodies.
Archives of andrology 1986;17(2):133-7.
1986: Pretorius E; Franken D R; Shulman S; Gloeb J
Sperm cervical mucus contact test and immunobead test for sperm antibodies.
Archives of andrology 1986;16(3):199-202.
1985: Franken D R; Pretorius E; Grobler S; De Wet J I
Important semen parameters during postcoital testing.
Archives of andrology 1985;14(2-3):213-5.
1984: Gray I P; Franken D R; Grobler S; Potgieter G M; Slabber C F; Tobler C
The effect of seminal plasma on gonadotrophin secretion by sheep pituitary cells in culture.
Andrologia 1984;16(5):482-5.
1984: Grobler S; Franken D R; Pretorius E
IgG-coated latex particles and the identification of sperm antibodies.
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1984;66(3):97-8.
1984: Franken D R; Labuschagne G P; Slabber C F; Grobler S; Pretorius E
Second pregnancies among immunologically infertile women: a preliminary report.
Archives of andrology 1984;13(2-3):269-72.
1984: Pretorius E; Franken D R; De Wet J; Grobler S
Sperm selection capacity of cervical mucus.
Archives of andrology 1984;12(1):5-7.
1984: Franken D R; Du Toit P J; Grobler S; Pretorius E
Lymphocyte transformation rates of homosexual men in presence of seminal plasma.
Archives of andrology 1984;12(1):1-3.
1983: Franken D R; Slabber C F; Grobler S
The SCMC test: a screening test for spermatozoal antibodies.
Andrologia 1983;15(3):270-3.
1982: Franken D R; Du Toit P J; Slabber C F; Grobler S
Inhibition of lymphocytes by seminal plasma fractions from azo-, oligo- and normozoospermic men.
Archives of andrology 1982;9(4):303-6.
1982: Franken D R; Slabber C F
The mixed antiglobulin reaction as a screening test for antispermatozoal antibodies.
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1982;62(6):162-3.
1982: Franken D R; Slabber C F; Giesteira M V
Corticosteroid therapy in case of immunologic infertility--a preliminary report.
Andrologia 1982;14(3):256-9.
1982: Franken D R; Slabber C F
Reproductive immunology: 4. The effect of seminal plasma from immunologic infertile men on in vitro lymphocyte cultures.
Andrologia 1982;14(2):99-103.
1982: Franken D R; Slabber C F
Reproductive immunology: 3. the effect of seminal plasma from oligozoospermic men on in vitro lymphocyte cultures.
Andrologia 1982;14(1):8-11.
1982: Franken D R; Slabber C F
Immunological infertility: occurrence and treatment.
Survey of immunologic research 1982;1(2):184-90.
1981: Franken D R; Slabber C F
Reproductive immunology: 1. The effect of different protein concentrations of seminal plasma on in vitro lymphocyte cultures.
Andrologia 1981;13(5):504-7.
1981: Franken D R; Slabber C F; Giesteira M V
[The treatment of immunological infertility]
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1981;60(9):354-5.
1981: Gray P; Franken D R; Slabber C F; Potgieter G M
A comparison of endocrine function and semen analysis in fertile and subfertile men.
Andrologia 1981;13(3):260-4.
1981: Gray P; Franken D R; Slabber C F; Potgieter G M
A possible relationship between prolactin and spermatogenesis in humans.
Andrologia 1981;13(2):127-30.
1980: Franken D R; Slabber C F
The postcoital test. A preliminary report.
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1980;58(22):899-900.
1980: Franken D R; Slabber C F
Infertility after vasovasostomy: A case report.
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1980;57(23):968.
1980: Franken D R; Slabber C F
Spermagglutinating antibodies: a comparison of three different techniques.
Andrologia 1980;12(1):20-4.

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