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List of works by Johan Smitz

A "freeze-all" embryo strategy after in vitro maturation: a novel approach in women with polycystic ovary syndrome?

scientific article published on 11 July 2013

A differential cytokine expression profile is induced by highly purified human menopausal gonadotropin and recombinant follicle-stimulating hormone in a pre- and postovulatory mouse follicle culture model.

scientific article published on 10 April 2009

A prediction model to select PCOS patients suitable for IVM treatment based on anti-Mullerian hormone and antral follicle count.

scientific article published on 20 February 2013

A randomized controlled dose-response pilot study of addition of hCG to recombinant FSH during controlled ovarian stimulation for in vitro fertilization.

scientific article published on 12 July 2012

A reproducible two-step culture system for isolated primary mouse ovarian follicles as single functional units.

scientific article published on 7 July 2004

ATP-binding cassette (ABC) transporters in caprine preantral follicles: gene and protein expression

scientific article published on 27 February 2018

Aberrant endometrial steroid receptor expression in in-vitro maturation cycles despite hormonal luteal support: A pilot study

scientific article published on 28 June 2019

Accelerated follicle growth during the culture of isolated caprine preantral follicles is detrimental to follicular survival and oocyte meiotic resumption

scientific article

Accuracy and reproducibility of automated estradiol-17beta and progesterone assays using native serum samples: results obtained in the Belgian external assessment scheme.

scientific article published in December 2007

Acquisition and loss of oocyte meiotic and developmental competence during in vitro antral follicle growth in mouse.

scientific article published on 8 January 2010

Alpha-fetoprotein controls female fertility and prenatal development of the gonadotropin-releasing hormone pathway through an antiestrogenic action

scientific article

Ammonium accumulation and use of mineral oil overlay do not alter imprinting establishment at three key imprinted genes in mouse oocytes grown and matured in a long-term follicle culture.

scientific article published on 3 June 2009

An improved IVM method for cumulus-oocyte complexes from small follicles in polycystic ovary syndrome patients enhances oocyte competence and embryo yield.

scientific article published in October 2017

Anti-Müllerian hormone for the assessment of ovarian response in GnRH-antagonist-treated oocyte donors ⬇️

scientific article published on February 3, 2012

Anti-Müllerian hormone reduces growth rate without altering follicular survival in isolated caprine preantral follicles cultured in vitro.

scientific article published on 11 May 2016

Are human oocytes from stem cells next?

scientific article published in December 2016

Aromatase inhibitors in ovarian stimulation for IVF/ICSI: a pilot study

scientific article published on 01 August 2006

Avoidance of multiple pregnancies after ovulation induction by supernumerary preovulatory follicular reduction

scientific article

Batch-to-batch consistency of human-derived gonadotrophin preparations compared with recombinant preparations

scientific article published in April 2005

Biphasic in vitro maturation (CAPA-IVM) specifically improves the developmental capacity of oocytes from small antral follicles

scientific article published on 09 August 2019

Can anti-Müllerian hormone concentrations be used to determine gonadotrophin dose and treatment protocol for ovarian stimulation?

scientific article published on 04 February 2013

Can peri-ovulatory putrescine supplementation improve egg quality in older infertile women?

scientific article published on 22 November 2018

Caprine ovarian follicle requirements differ between preantral and early antral stages after IVC in medium supplemented with GH and VEGF alone or in combination

scientific article published on 13 September 2016

Chromosome constitution of human embryos generated after in vitro maturation including 3-isobutyl-1-methylxanthine in the oocyte collection medium.

scientific article published on 4 December 2014

Circulating heat shock protein 70 (Hsp70) in elderly members of a rural population from Cameroon: Association with infection and nutrition ⬇️

scientific article published on February 21, 2011

Clinical and biologic evaluation of ovarian function in women treated by bone marrow transplantation for various indications during childhood or adolescence

scientific article published on 07 May 2011

Clinical outcome of non-hCG-primed oocyte in vitro maturation treatment in patients with polycystic ovaries and polycystic ovary syndrome.

scientific article published on 24 August 2011

Clinical validation of a fully automated 17beta-estradiol and progesterone assay (VIDAS) for use in monitoring assisted reproduction treatment

scientific article published in August 2002

Connexin 37 and 43 gene and protein expression and developmental competence of isolated ovine secondary follicles cultured in vitro after vitrification of ovarian tissue

scientific article published on 12 January 2016

Cortisol is an associated-risk factor of brain dysfunction in patients with severe sepsis and septic shock

scientific article

Culture of oocytes and risk of imprinting defects.

scientific article

Cumulus cell gene expression is associated with oocyte developmental quality and influenced by patient and treatment characteristics.

scientific article published on 13 March 2010

Cumulus cell gene expression predicts better cleavage-stage embryo or blastocyst development and pregnancy for ICSI patients.

scientific article published on 3 March 2011

Cumulus-corona gene expression analysis combined with morphological embryo scoring in single embryo transfer cycles increases live birth after fresh transfer and decreases time to pregnancy

scientific article published on 09 January 2019

Department of Error

Developmental capacity of in vitro–matured human oocytes retrieved from polycystic ovary syndrome ovaries containing no follicles larger than 6 mm ⬇️

scientific article published on February 23, 2012

Differences in collagen expression in cumulus cells after exposure to highly purified menotropin or recombinant follicle-stimulating hormone in a mouse follicle culture model.

scientific article published on 21 January 2009

Different stability of free and complexed prostate-specific antigen in serum in relation to specimen handling and storage conditions

scientific article published in December 2000

Dynamic medium containing growth differentiation factor-9 and FSH maintains survival and promotes in vitro growth of caprine preantral follicles after long-term in vitro culture

scientific article published in January 2013

Dynamics of imprinted DNA methylation and gene transcription for imprinting establishment in mouse oocytes in relation to culture duration variability.

scientific article published on 5 December 2013

Effect of clomiphene citrate on follicular and luteal phase luteinizing hormone concentrations in in vitro fertilization cycles stimulated with gonadotropins and gonadotropin-releasing hormone antagonist

scientific article

Effect of ovarian stimulation with recombinant follicle-stimulating hormone, gonadotropin releasing hormone antagonists, and human chorionic gonadotropin on endometrial maturation on the day of oocyte pick-up

scientific article published in November 2002

Effect of the hematopoietic growth factors erythropoietin and kit ligand on bovine oocyte in vitro maturation and developmental competence

scientific article published on 14 September 2018

Effectiveness and safety of in vitro maturation of oocytes versus in vitro fertilisation in women with high antral follicle count: study protocol for a randomised controlled trial

scientific article published on 09 December 2018

Effects of chilling on structural aspects of early preantral mouse follicles.

scientific article published on 10 December 2003

Effects of long-term in vitro exposure to phosphodiesterase type-3 inhibitors on follicle and oocyte development.

scientific article published in August 2005

Effects of low methyl donor levels in culture medium during mouse follicle culture on oocyte imprinting establishment.

scientific article published on 14 April 2010

Elevated progesterone at initiation of stimulation is associated with a lower ongoing pregnancy rate after IVF using GnRH antagonists.

scientific article

Endocrine effects of hCG supplementation to recombinant FSH throughout controlled ovarian stimulation for IVF: a dose-response study

scientific article published on 01 April 2013

Endometrial hormone receptors and proliferation index in the periovulatory phase of stimulated embryo transfer cycles in comparison with natural cycles and relation to clinical pregnancy outcome

scientific article published in August 2002

Endometrial integrin expression in the early luteal phase in natural and stimulated cycles for in vitro fertilization

scientific article published in May 2003

Epiregulin can effectively mature isolated cumulus-oocyte complexes, but fails as a substitute for the hCG/epidermal growth factor stimulus on cultured follicles.

scientific article published on 25 March 2009

Estrogen receptor subtypes localization shifts in cultured mouse ovarian follicles.

scientific article published on 11 March 2008

Evaluation of a new automated electrochemiluminescent sex hormone-binding globulin (SHBG) immunoassay.

scientific article published in January 2005

Exogenous hCG activity, but not endogenous LH activity, is positively associated with live birth rates in anovulatory infertility.

scientific article published on 7 July 2011

Exogenous luteinizing hormone activity may influence the treatment outcome in in vitro fertilization but not in intracytoplasmic sperm injection cycles.

scientific article

Expectations and limitations of ovarian tissue transplantation

scientific article

Exposing cultured mouse ovarian follicles under increased gonadotropin tonus to aromatizable androgens influences the steroid balance and reduces oocyte meiotic capacity ⬇️

scientific article published on July 20, 2010

Expression Patterns of Poliovirus Receptor, Erythrocyte Protein Band 4.1-Like 3, Regulator of G-Protein Signaling 11, and Oxytocin Receptor in Mouse Ovarian Cells During Follicle Growth and Early Luteinization In Vitro and In Vivo1

scientific article published on January 16, 2012

Expression of growth differentiation factor 9, bone morphogenetic protein 15, and anti-Müllerian hormone in cultured mouse primary follicles

scientific article published on 9 May 2008

Fertility preservation in women with cancer.

scientific article

Fibrin-alginate hydrogel supports steroidogenesis, in vitro maturation of oocytes and parthenotes production from caprine preantral follicles cultured in group.

scientific article

First childbirth from transplanted cryopreserved ovarian tissue brings hope for cancer survivors.

scientific article

First trimester screening for Down's syndrome after assisted reproductive technology: non-male factor infertility is associated with elevated free beta-human chorionic gonadotropin levels at 10-14 weeks of gestation

scientific article published on 27 December 2007

Follicle-Stimulating Hormone: A Review of Form and Function in the Treatment of Infertility.

scientific article published on 06 October 2015

Follicular Phase Endocrine Characteristics during Ovarian Stimulation and GnRH Antagonist Cotreatment for IVF: RCT Comparing recFSH Initiated on Cycle Day 2 or 5 ⬇️

scientific article published on February 9, 2011

Follicular growth and estradiol follow-up after subcutaneous xenografting of fresh and cryopreserved human ovarian tissue

scientific article published on 20 August 2007

Folliculogenesis and oogenesis: from basic science to the clinic ⬇️

scientific article published on August 6, 2010

Functional AR signaling is evident in an in vitro mouse follicle culture bioassay that encompasses most stages of folliculogenesis.

scientific article

Gene expression differences induced by equimolar low doses of LH or hCG in combination with FSH in cultured mouse antral follicles

scientific article published on 20 August 2012

Growth differentiation factor-9 and anti-Müllerian hormone expression in cultured human follicles from frozen-thawed ovarian tissue.

scientific article

Growth hormone immunoassays: proposal to reduce interlaboratory variability

scientific article published on 01 October 2002

Heparin and cAMP modulators interact during pre-in vitro maturation to affect mouse and human oocyte meiosis and developmental competence.

scientific article published on 4 April 2013

High prolactin levels are associated with more delirium in septic patients.

scientific article

Highly purified HMG versus recombinant FSH for ovarian stimulation in IVF cycles.

scientific article

Human antral follicles <6 mm: a comparison between in vivo maturation and in vitro maturation in non-hCG primed cycles using cumulus cell gene expression ⬇️

scientific article published on September 6, 2012

Human cumulus-enclosed germinal vesicle oocytes from early antral follicles reveal heterogeneous cellular and molecular features associated with in vitro maturation capacity

scientific article (publication date: 22 April 2015)

Human in vitro oocyte maturation is not associated with increased imprinting error rates at LIT1, SNRPN, PEG3 and GTL2.

scientific article published on 24 June 2014

Hypotension and a positive fluid balance are associated with delirium in patients with shock

scientific article published in PLoS ONE

IVM media are designed specifically to support immature cumulus-oocyte complexes not denuded oocytes that have failed to respond to hyperstimulation.

scientific article published on 30 June 2011

Immature Oocytes from Unprimed Juvenile Mice Become a Valuable Source for Embryo Production When Using C-Type Natriuretic Peptide as Essential Component of Culture Medium.

scientific article

Immature oocyte in-vitro maturation: clinical aspects.

scientific article

Immunoprecipitation for rapid detection of macroprolactin in the form of prolactin-immunoglobulin complexes

scientific article published on 07 July 2005

Impact of ovarian stimulation on corpus luteum function and embryonic implantation

scientific article

In vitro follicle growth under non-attachment conditions and decreased FSH levels reduces Lhcgr expression in cumulus cells and promotes oocyte developmental competence ⬇️

scientific article published on December 22, 2011

In vitro growth and development of isolated secondary follicles from vitrified caprine ovarian cortex.

scientific article published on 3 August 2017

In vitro maturation (IVM) of oocytes in patients with resistant ovary syndrome and in patients with repeated deficient oocyte maturation

scientific article published on 20 September 2018

In vitro maturation (IVM) of oocytes recovered from ovariectomy specimens in the laboratory: a promising "ex vivo" method of oocyte cryopreservation resulting in the first report of an ongoing pregnancy in Europe

scientific article

In vitro study of Withanolide D toxicity on goat preantral follicles and its effects on the cell cycle

scientific article published on 21 December 2018

In vivo and in vitro strategies to support caprine preantral follicle development after ovarian tissue vitrification.

scientific article published on 15 January 2018

Intrafollicular endocrine milieu after addition of hCG to recombinant FSH during controlled ovarian stimulation for in vitro fertilization.

scientific article published on 2 December 2013

Live birth after transplantation of frozen-thawed ovarian tissue after bilateral oophorectomy for benign disease ⬇️

scientific article published on June 13, 2012

Live birth rates after IVF are reduced by both low and high progesterone levels on the day of human chorionic gonadotrophin administration.

scientific article published on 17 June 2014

Live-birth rates after HP-hMG stimulation in the long GnRH agonist protocol: association with mid-follicular hCG and progesterone concentrations, but not with LH concentrations.

scientific article

Luteal phase oestradiol suppression by letrozole: a pilot study in oocyte donors.

scientific article published in September 2008

Luteinizing hormone and human chorionic gonadotropin: a review of their varied clinical applications in assisted reproductive technology

scientific article published on 24 November 2014

Luteinizing hormone and human chorionic gonadotropin: distinguishing unique physiologic roles

scientific article

Luteinizing hormone and human chorionic gonadotropin: origins of difference

scientific article published on 21 December 2013

Meiotic arrest in vitro by phosphodiesterase 3-inhibitor enhances maturation capacity of human oocytes and allows subsequent embryonic development.

scientific article published on 5 October 2005

Melatonin has dose-dependent effects on folliculogenesis, oocyte maturation capacity and steroidogenesis.

scientific article published on 6 October 2006

Melatonin protects against cisplatin-induced ovarian damage in mice via the MT1 receptor and antioxidant activity.

scientific article published on 8 June 2017

Molecular control of oogenesis.

scientific article published on 24 May 2012

Morphological and ultrastructural evaluation of cultured frozen-thawed human fetal ovarian tissue.

scientific article published in April 2006

Mouse cumulus-oocyte complexes from in vitro-cultured preantral follicles suggest an anti-luteinizing role for the EGF cascade in the cumulus cells.

scientific article published on 3 February 2011

Multicenter evaluation of a rapid electrochemiluminescent adrenocorticotropic hormone (ACTH) immunoassay

scientific article published on 24 January 2007

Multicenter evaluation of the first automated Elecsys sFlt-1 and PlGF assays in normal pregnancies and preeclampsia.

scientific article published on 3 March 2010

Multicentre performance evaluation of the E170 module for modular analytics

scientific article published in January 2004

Neurokinin B Exerts Direct Effects on the Ovary to Stimulate Estradiol Production.

scientific article published on 26 July 2016

Number of ovarian follicles in human fetuses with the 45,X karyotype.

scientific article published in April 2004

Oocyte and cumulus cell transcripts from cultured mouse follicles are induced to deviate from normal in vivo conditions by combinations of insulin, follicle-stimulating hormone, and human chorionic gonadotropin.

scientific article published on 12 May 2011

Oocyte developmental competence after heterotopic transplantation of cryopreserved ovarian tissue.

scientific article published in March 2004

Oocyte maturation and quality: role of cyclic nucleotides

scientific article

Oocyte maturity and preimplantation development in relation to follicle diameter in gonadotropin-releasing hormone agonist or antagonist treatments.

scientific article published in March 2006

Ovine secondary follicles vitrified out the ovarian tissue grow and develop in vitro better than those vitrified into the ovarian fragments

scientific article published on 10 November 2015

Performance evaluation of an automated electrochemiluminescent calcitonin (CT) immunoassay in diagnosis of medullary thyroid carcinoma.

scientific article

Plasma and follicular fluid concentrations of LHRH antagonist cetrorelix (Cetrotide) in controlled ovarian stimulation for IVF.

scientific article

Pre-maturation with cAMP modulators in conjunction with EGF-like peptides during in vitro maturation enhances mouse oocyte developmental competence.

scientific article published on 22 February 2014

Prematuration with cyclic adenosine monophosphate modulators alters cumulus cell and oocyte metabolism and enhances developmental competence of in vitro-matured mouse oocytes.

scientific article published on 25 June 2014

Profound LH suppression after GnRH antagonist administration is associated with a significantly higher ongoing pregnancy rate in IVF.

scientific article published on 19 August 2004

Promotion of EGF receptor signaling improves the quality of low developmental competence oocytes.

scientific article

Prospective study into the value of the automated Elecsys antimüllerian hormone assay for the assessment of the ovarian growing follicle pool

scientific article published on 11 February 2015

Quality and functionality of human ovarian tissue after cryopreservation using an original slow freezing procedure ⬇️

scientific article published on December 22, 2012

Quantification of oocyte-specific transcripts in follicle-enclosed oocytes during antral development and maturation in vitro.

scientific article published on 24 June 2009

Rapid detection of macroprolactin in the form of prolactin-immunoglobulin G complexes by immunoprecipitation with anti-human IgG-agarose

Reevaluation and evolution of the simulated physiological oocyte maturation system.

scientific article

Reply: HCG supplementation of controlled ovarian stimulation cycles.

scientific article published on 28 October 2012

Sheep Isolated Secondary Follicles Are Able to Produce Metaphase II Oocytes After Vitrification and Long-Term In Vitro Growth.

scientific article published on 10 April 2017

Spuriously elevated serum estradiol concentrations measured by an automated immunoassay rarely cause unnecessary cancellation of in vitro fertilization cycles

scientific article published on 04 May 2006

Steroidogenesis-disrupting compounds can be effectively studied for major fertility-related endpoints using in vitro cultured mouse follicles.

scientific article published on 30 December 2008

Stroma cell-derived factor 1 and connexins (37 and 43) are preserved after vitrification and in vitro culture of goat ovarian cortex

article

Supplementation of in vitro culture medium with FSH to grow follicles and mature oocytes can be replaced by extracts of Justicia insularis

scientific article published in PLoS ONE

Survey of Fertility Preservation Options Available to Patients With Cancer Around the Globe ⬇️

scientific article published on 28 June 2017

Survey of Third-Party Parenting Options Associated With Fertility Preservation Available to Patients With Cancer Around the Globe

scientific article published on 30 June 2017

Testosterone for Poor Ovarian Responders: Lessons From Ovarian Physiology.

scientific article published on 3 August 2016

The cumulus cell gene expression profile of oocytes with different nuclear maturity and potential for blastocyst formation

scientific article

The current knowledge on radiosensitivity of ovarian follicle development stages.

scientific article published on 16 January 2009

The definition of IVM is clear-variations need defining.

scientific article published on 22 September 2016

The effect of ovarian puncture on the endocrine profile of PCOS patients who undergo IVM

scientific article published on 24 February 2014

The loss of imprinted DNA methylation in mouse blastocysts is inflicted to a similar extent by in vitro follicle culture and ovulation induction

scientific article

The promise of in vitro maturation in assisted reproduction and fertility preservation.

scientific article published on 04 January 2011

The value of anti-Mullerian hormone measurement in the long GnRH agonist protocol: association with ovarian response and gonadotrophin-dose adjustments.

scientific article

Timing of nuclear maturation and postovulatory aging in oocytes of in vitro-grown mouse follicles with or without oil overlay.

scientific article

Unaltered imprinting establishment of key imprinted genes in mouse oocytes after in vitro follicle culture under variable follicle-stimulating hormone exposure.

scientific article published in January 2009

Vitamin D deficiency and pregnancy rates in women undergoing single embryo, blastocyst stage, transfer (SET) for IVF/ICSI.

scientific article published on 20 June 2014

Vitrification of human ovarian tissue: a practical and relevant alternative to slow freezing

scientific article published on 25 June 2015

Xenotransplantation of goat ovary as an alternative to analyze follicles after vitrification

scientific article published on 19 October 2018

Zona pellucida gene mRNA expression in human oocytes is related to oocyte maturity, zona inner layer retardance and fertilization competence

scientific article published on 15 February 2017

[State of the art on in vitro folliculogenesis in mouse]

scientific article published on 01 January 2008

follicle culture in the context of IVF

article

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