Igael Madgar’s research while affiliated with Tel Aviv University and other places

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Publications (17)


[THE VARICOCELE ENIGMA: "BACKGROUND NOISE" OR COMMON MALE INFERTILITY ETIOLOGY?]
  • Literature Review

May 2015

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24 Reads

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3 Citations

Harefuah

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Igael Madgar

Infertility derived from mate etiology is a health problem which has increased over the last decades. Varicocele is a common cause for mate infertility with incidence of 35% and 75% among males with primary and secondary infertility, respectively, compared to 10%-15% among the general population. VaricoceLe is defined as dilated and entangled pampiniform plexus and internal spermatic veins located in the spermatic cord. The effect of varicocele on male infertility was controversial due to lack of published data uniformity and high standard studies. During recent years several published researches supplied reliable evidence regarding the influence of varicocele on mate infertility, treatment options and appropriate indications. Adequate patient selection significantly improves the chances for spontaneous pregnancy. Treatment varies between surgical veins ligation by various means and embolization by the endovascular approlch of the dilated veins. The current article summarizes updated treatment indications, advantages and drawbacks of the optional approaches and describes the considerations for choosing the optimal treatment for the infertile couple due to varicocele.


Sperm Preservation by Electroejaculation in Adolescent Cancer Patients

February 2014

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202 Reads

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26 Citations

Pediatric Blood & Cancer

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Amos Toren

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Ariel Hourvitz

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[...]

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Igael Madgar

The increasing prevalence of cancer survivors who are infertile due to gonadal failure highlights the importance of fertility preservation prior to gonadotoxic treatments. Adolescent cancer patients may not be mature enough to produce sperm by masturbation, leading to the use of alternative methods for obtaining sperm for cryopreservation. The aim of the current study was to evaluate the safety and efficacy of electroejaculation (EEJ) for cryopreservation among adolescent cancer patients. This retrospective cohort study included 45 adolescent (12-18 years old) cancer patients who underwent EEJ during 2002-2012 in an academic tertiary referral fertility center. Sperm cryopreservation, ejaculate parameters, and procedure complications were evaluated. EEJ was performed without documented complications. Sperm was successfully obtained in 30 (66.7%) patients. Retrieval failures included ejaculates without sperm in 8 patients (17.8%) and no ejaculate in 7 patients (15.5%). Cryopreserved ejaculates were characterized by severe asthenospermia, normal sperm concentration, and low volume. Retrieved sperm group was further divided to 19 motile sperm ejaculates with significantly higher volume, sperm concentration, and total count compared to 10 non-motile sperm patients. EEJ is a safe and feasible procedure for cryopreservation in adolescent cancer patients who are unable to masturbate. The wide diversity of EEJ outcome and ejaculate parameters may represent a continuum of pubertal changes in that population. Pediatr Blood Cancer © 2013 Wiley Periodicals, Inc.


A child of “hers”: older single mothers and their children conceived through IVF with both egg and sperm donation

November 2007

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166 Reads

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32 Citations

Fertility and Sterility

To study the decision to have a child alone, the experience of gamete donation, the issue of disclosure of the donor link to the child, conception-related health and sociodemographic characteristics of the mothers, children's socioemotional development, and mother-child relationships. Qualitative study. Prior clients of a sperm bank. Eleven single women in their late forties who gave birth to children aided by IVF involving both egg and sperm donation, i.e., the children are not genetically related to the mothers. Not only were there differences among the participants, but they also differed from the only previous study focusing on single women becoming mothers by choice and using advanced reproductive technologies. Similarly to previous studies, we generally found that the impact of assisted conception on parenting and child development gives no undue cause for concern while the children are still young. However, the young age of the children in our sample prevented us from answering many questions about the children's socioemotional development and about disclosure of donor conception to children born to older single women using double gamete donation and IVF.


Is sperm donor karyotype analysis necessary?

July 2007

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29 Reads

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1 Citation

Reproductive BioMedicine Online

A case study involving four female patients inseminated with sperm samples from the same donor is reported. Routine amniocentesis of one of the patients revealed that the fetus is a carrier of a balanced reciprocal translocation, 46,XY,t(1;10)(q12;q11.2), which was subsequently detected in the donor. Counselled amniocentesis in the three remaining patients led to the detection of an additional translocation carrier fetus. All four pregnancies resulted in live births. Fluorescence in-situ hybridization was applied to identify normal, balanced or imbalanced sperm cells of the donor. Accordingly, routine karyotype analysis of sperm donors was introduced, and is now recommended in the authors' unit.


Posthumous sperm retrieval: Analysis of time interval to harvest sperm
  • Article
  • Full-text available

December 2006

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517 Reads

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72 Citations

Human Reproduction

Current recommendations regarding posthumous sperm retrieval (PSR) are based on a small number of cases. Our purpose was to determine the time interval from death to a successful procedure. Seventeen consecutive PSR procedures in 14 deceased and 3 neurologically brain-dead patients at two male infertility centres [Sheba Medical Center (SMC), Tel-Hashomer, Israel and University of California San Francisco (UCSF), San Francisco, CA, USA] were analysed. Main outcome measures were retrieval of vital sperm, pregnancies and births. PSR methods included resection of testis and epididymis (n = 8), en-block excision of testis, epididymis and proximal vas deferens with vasal irrigation (n = 6), electroejaculation (EEJ) (n = 2) and epididymectomy (n = 1). PSR was performed 7.5-36 h after death. Sperm was retrieved in all cases and was motile in 14 cases. In two cases, testicular and epididymal tissues were cryopreserved without sperm evaluation, and in one case, no motility was detected. IVF and ICSI were performed in two cases in which sperm had been retrieved 30 h after death, and both resulted in pregnancies and live births. Viable sperm is obtainable with PSR well after the currently recommended 24-h time interval. PSR should be considered up to 36 h after death, following appropriate evaluation. No correlation was found between cause of death and chance for successful sperm retrieval.

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Influence of multiple transrectal electroejaculations on semen parameters and intracytoplasmic sperm injection outcome

August 2004

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28 Reads

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16 Citations

Fertility and Sterility

To compare semen parameters and intracytoplasmic sperm injection (ICSI) outcome in spinal cord-injured subjects who underwent single (group 1) or multiple (group 2) electroejaculations before ICSI. Prospective, randomized, controlled study. Department of gynecology, obstetrics, and pediatric science in a reproductive medicine unit at a major Italian university. Thirty-four healthy women with a male partner with SCI who were seeking assisted reproduction services. Transrectal electroejaculation, controlled ovarian hyperstimulation, and ICSI. Sperm concentration, morphology, and motility and fertilization and pregnancy rates after ICSI. Sperm was successfully retrieved in 94.1% of cases. In male subjects who underwent multiple electroejaculations, statistically significant improvements in sperm concentration and total sperm motility rate were observed. The overall fertilization rate was 63.6%. The number of oocytes retrieved and injected was comparable between the two groups. A total of nine clinical pregnancies were achieved. The pregnancy rate was statistically significantly higher in group 2 (n = 6/16; 37.5%) than in group 1 (n = 3/16; 18.75%). These data suggest that multiple electroejaculation has a positive effect on semen parameters and ICSI outcome.



Prognostic value of the clinical and laboratory evaluation in patients with nonmosaic Klinefelter syndrome who are receiving assisted reproductive therapy

July 2002

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25 Reads

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109 Citations

Fertility and Sterility

To characterize clinical and laboratory findings in nonmosaic 47,XXY patients that may help to predict spermatogenetic activity in their testicles. Prospective study. Assisted reproductive technology program. Twenty patients with nonmosaic Klinefelter syndrome who underwent testicular sperm retrieval for IVF. The correlation between basal FSH, LH and testosterone levels, mean testicular volume, and results of the hCG test and presence or absence of sperm after testicular sperm extraction (TESE). Sperm was found in nine patients (45%). The mean testicular volume was 7.8 +/- 2.5 mL in men with sperm after TESE and 5.6 +/- 1.2 mL in those without sperm after TESE; corresponding testosterone levels were 3.5 +/- 1.2 ng/mL and 1.7 +/- 0.8 ng/mL. Serum levels of FSH and LH did not significantly differ between groups. After the hCG test, the mean serum testosterone level was 16.0 +/- 6.3 ng/mL in men with sperm after TESE and 6.7 +/- 5.6 ng/mL in those without sperm. Testicular volume, testosterone levels, and results of the hCG test are important predictive factors of spermatogenesis in patients with nonmosaic Klinefelter syndrome.


Management of Varicocele in Military Obligatory Service: Israel Defense Forces Medical Corps Policy

January 2002

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345 Reads

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2 Citations

Military Medicine

Varicocele is a well-known and highly prevalent medical problem in young obligatory service recruits. Still, there are many questions regarding its management. Is there a clear relation between varicocele and infertility? Can early varicocelectomy in young soldiers prevent future infertility? Is there a role for varicocelectomy in pain relief in physically active soldiers? And finally, what are the pros and cons of the open surgical, laparoscopic, or radiographic techniques in this specific population? Answering these questions should help military physicians in varicocele patients' care. It should also help decision makers to build cost-effective and evidence-based health policy. In this article, we review the literature regarding the controversies in the management of varicocele in young adults and delineate the current policy of the Israel Defense Forces Medical Corps.


Citations (13)


... The male component affects as much as 55% of all infertility couples, and due to the dramatic increase of epigenetic, environmental and lifestyle factors (1,2). According to previously published research, the causes of male infertility mainly include varicocele (3,4), idiopathic or unexplained infertility, hypogonadism, primary testicular failure, endocrine disorders (5,6), obstruction (7,8), cryptorchidism, genetic factors (9,10), anejaculation and retrograde ejaculation and malnutrition (11). The etiology of non-obstructive azoospermia (NOA) encompasses a wide variety of causes, including pre-testicular due to endocrine abnormalities evolving to dysregulation in sex steroids and gonadotropin levels. ...

Reference:

Identification of PDCL2 as a candidate marker in Sertoli cell-only syndrome by chromatin immunoprecipitation-sequencing and bioinformatics analysis
[THE VARICOCELE ENIGMA: "BACKGROUND NOISE" OR COMMON MALE INFERTILITY ETIOLOGY?]
  • Citing Article
  • May 2015

Harefuah

... Sperm cryopreservation prior to oncological treatments became a standard of care decades ago, as manifested within professional recommendations and guidelines [9,[19][20][21]. The efficiency of cryopreservation led to the expansion of methods for sperm retrieval such as electroejaculation [22] and testicular biopsy [23] in specific scenarios. The overall success rate of sperm cryopreservation is high and provides a future realistic option for biological fatherhood [24,25]. ...

Sperm Preservation by Electroejaculation in Adolescent Cancer Patients
  • Citing Article
  • February 2014

Pediatric Blood & Cancer

... This enzyme was first found to be a proviral integration site in murine T-cell lymphomas mediated by the Moloney Murine Leukemia Virus (MoMuLV) [22,23]. Along with other isoforms such as PIM2 [24] and PIM3 [25], PIM1 belongs to the family of PIM kinases that are a class of serine/threonine kinases that operate as oncoproteins by transcriptionally activating genes that regulate cell proliferation [26]. Inhibition of PIM1 has been shown to reduce the mTOR signaling by prohibiting the phosphorylation of PRAS40 which in turn ceases the appearance of the hallmarks of AD [27]. ...

The human Pim-2 proto-oncogene and its testicular expression

Biochimica et Biophysica Acta

... Testicular vascularization Studies focused on testicular vascularization and male infertility are scanty [68][69][70][71][72]. Some vascular parameters have been associated with sperm quality [73,74] or discrimination of OA and NOA [68,72,75,76]. However, at present, testicular vascularization has no impact on the clinical management of infertile men. ...

Intratesticular Doppler flow, seminal plasma nitrites/nitrates, and nonobstructive sperm extraction from patients with obstructive and nonobstructive azoospermia

Fertility and Sterility

... Rights reserved www.nature.com/scientificreports/ regions of the gene in CBAVD patients 26,27 , or that CFTR gene variant may not be the absolute influencing factor for the occurrence and development of CBAVD, and some other mechanisms and environmental factors might also be involved. CF has been regarded as a classical autosomal recessive disorder, with no adverse health effects associated with the carrier state, and only one copy of CFTR variant is not enough to lead to CBAVD 4,28 . ...

CFTR Haplotype Analysis Reveals Genetic Heterogeneity in the Etiology of Congenital Bilateral Aplasia of the Vas Deferens
  • Citing Article
  • July 1995

The American Journal of Human Genetics

... Initially, intracytoplasmic sperm injection (ICSI) was performed in couples with repeated failed fertilization (Palermo et al., 1992), following standard in-vitro fertilization (IVF). It soon became clear that ICSI could also be used for couples in which the male partner has a limited number of spermatozoa in the ejaculate, or for epididymal or testicular spermatozoa (Madgar et al., 1996). Moreover, it is now clear that none of the conventional semen parameters has any influence on the results of ICSI from ejaculated spermatozoa, except when totally immotile spermatozoa are available for the microinjection procedure . ...

Andrology: Micromanipulation improves in-vitro fertilization results after epididymal or testicular sperm aspiration in patients with congenital absence of the vas deferens

Human Reproduction

... Several similar studies have reached consistent conclusions with ours. Igael Madgar et al. (28) compared 1103 cycles in OA patients to 275 cycles in NOA patients without distinguishing the sperm source and reported comparable clinical pregnancy rates between the two groups, indicating no significant difference. Similarly, another research evaluated the clinical results of different populations using TESA-derived sperm. ...

Outcome of In Vitro Fertilization and Intracytoplasmic Injection of Epididymal and Testicular Sperm Extracted from Patients with Obstructive and Nonobstructive Azoospermia

Fertility and Sterility

... Open surgical retroperitoneal approach was the method chosen for many years [13]. The retroperitoneal approach has the advantage of the ligation of veins at the site of entry in to the left renal vein but the problem with the high ligation is the high incidence of recurrence and post operative hydrocele. ...

Management of Varicocele in Military Obligatory Service: Israel Defense Forces Medical Corps Policy
  • Citing Article
  • January 2002

Military Medicine

... Madgar et al. 18 observed that the testicular volume of patients in the successful sperm extraction group was larger than that of patients in the unsuccessful group; while in our study, it was found that testicular size and hormone level had no significant predictive effect on micro-TESE results. ...

Prognostic value of the clinical and laboratory evaluation in patients with nonmosaic Klinefelter syndrome who are receiving assisted reproductive therapy
  • Citing Article
  • July 2002

Fertility and Sterility

... Anestezinin ejakülatın kalitesini etkileyebileceğini de unutmamak gerekir. 19 5) Transrektal masaj yöntemi; non-invaziv sperma toplamak için alternatif yöntemlerden biridir. Aksesuar eklenti bezlerinin rektal stimülasyonu kullanılarak yapılır. ...

Influence of multiple transrectal electroejaculations on semen parameters and intracytoplasmic sperm injection outcome

Fertility and Sterility