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Basic and Clinical Andrology

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https://www.readbyqxmd.com/read/28439417/cell-free-and-intracellular-nucleic-acids-new-non-invasive-biomarkers-to-explore-male-infertility
#1
REVIEW
Anne Boissière, Anna Gala, Alice Ferrières-Hoa, Tiffany Mullet, Solenne Baillet, Amaël Petiton, Antoine Torre, Samir Hamamah
Male infertility is a devastating problem that affects many couples worldwide. However, the molecular mechanisms and causes of idiopathic male infertility remain unclear. Circulating cell-free nucleic acids have an important role in human physiology and emerging evidence suggests that they play a role in male infertility. This review summarizes recent results on cell-free and intracellular nucleic acids in male infertility and discusses their potential use as biomarkers of male infertility in the clinical practice...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28417005/reversibility-of-vasalgel%C3%A2-male-contraceptive-in-a-rabbit-model
#2
Donald Waller, David Bolick, Elaine Lissner, Christopher Premanandan, Gary Gamerman
BACKGROUND: Development of a non-hormonal long-acting reversible contraceptive for men could have a significant impact on reducing unintended pregnancies. Vasalgel™ is a high molecular weight polymer consisting of styrene-alt-maleic acid (SMA) dissolved in dimethyl sulfoxide being developed as a reversible male contraceptive device. It forms a hydrogel when implanted into the vasa deferentia, which prevents the passage of sperm. Previous studies in the rabbit have proven its efficacy, durability and rapid onset...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28331619/processing-and-selection-of-surgically-retrieved-sperm-for-icsi-a-review
#3
Greta Verheyen, Biljana Popovic-Todorovic, Herman Tournaye
Although the technique of intracytoplasmic sperm injection (ICSI) has been a revolution in the alleviation of male infertility, the use of testicular sperm for ICSI was a formerly unseen breakthrough in the treatment of the azoospermic man with primary testicular failure. At the clinical level, different procedures of testicular sperm retrieval (conventional TESE, micro-TESE, FNA/TESA, MESA, PESA) are being performed, the choice is mainly based on the cause of azoospermia (obstructive versus non-obstructive) and the surgeon's skills...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28286655/metabolic-endotoxaemia-related-inflammation-is-associated-with-hypogonadism-in-overweight-men
#4
Kelton Tremellen, Natalie McPhee, Karma Pearce
BACKGROUND: Obesity is associated with both impaired testosterone production and a chronic state of low grade inflammation. Previously it was believed that this inflammation was mediated by a decline in the immunosuppressive action of testosterone. However, more recently an alternative hypothesis (GELDING theory) has suggested that inflammation originating from the passage of intestinal bacteria into the circulation (metabolic endotoxaemia) may actually be the cause of impaired testicular function in obese men...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28239474/predictive-value-of-sperm-deoxyribonucleic-acid-dna-fragmentation-index-in-male-infertility
#5
Budi Wiweko, Pramety Utami
BACKGROUND: Recently, damage to the sperm DNA has been studied as it is associated with reduced fertilization rates, embryo quality, and pregnancy rates, also higher rates of spontaneous miscarriage. OBJECTIVE: To develop a diagnostic method in predicting male infertility. MATERIAL AND METHODS: The design of this study is cross-sectional. Data were retrieved from medical records of Yasmin IVF Clinic Dr. Cipto Mangunkusumo General Hospital and Daya Medika Infertility Clinic from January to December 2015...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28191316/the-contraceptive-efficacy-of-intravas-injection-of-vasalgel%C3%A2-for-adult-male-rhesus-monkeys
#6
Angela Colagross-Schouten, Marie-Josee Lemoy, Rebekah I Keesler, Elaine Lissner, Catherine A VandeVoort
BACKGROUND: Options for male contraception are limited. The purpose of this study was to use a nonhuman primate model to evaluate Vasalgel™, a high molecular weight polymer being developed as a contraceptive device for men. METHODS: Sixteen adult male rhesus monkeys received intravas injections of Vasalgel, consisting of 25% styrene maleic acid in dimethyl sulfoxide. After a one-week recovery, males were returned to outdoor group housing, which included at least 3 and up to 9 intact, breeding females with a successful reproductive history...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28127436/sperm-quality-and-paternal-age-effect-on-blastocyst-formation-and-pregnancy-rates
#7
Aurélie Chapuis, Anna Gala, Alice Ferrières-Hoa, Tiffany Mullet, Sophie Bringer-Deutsch, Emmanuelle Vintejoux, Antoine Torre, Samir Hamamah
BACKGROUND: Several studies suggest a decrease in sperm quality in men in the last decades. Therefore, the aim of this work was to assess the influence of male factors (sperm quality and paternal age) on the outcomes of conventional in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). METHODS: This retrospective study included all couples who underwent IVF or ICSI at Montpellier University Hospital, France, between 1 January 2010 and 31 December 2015...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28101363/hormonal-chemical-and-thermal-inhibition-of-spermatogenesis-contribution-of-french-teams-to-international-data-with-the-aim-of-developing-male-contraception-in-france
#8
Jean-Claude Soufir
Since the 1970s, international research on male contraception has been actively pursued. Hormonal and non-hormonal methods (thermal, chemical) have been tested, leading to clinical trials of interest to thousands of men and couples. The results showed that it was possible to develop methods of male contraception that inhibited spermatogenesis with good contraceptive efficacy. However, their side effects (mainly loss of libido), poorly accepted modes of administration, and the high frequency of poor responders prevented their widespread use...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28031843/mammalian-sperm-nuclear-organization-resiliencies-and-vulnerabilities
#9
A Champroux, J Torres-Carreira, P Gharagozloo, J R Drevet, A Kocer
Sperm cells are remarkably complex and highly specialized compared to somatic cells. Their function is to deliver to the oocyte the paternal genomic blueprint along with a pool of proteins and RNAs so a new generation can begin. Reproductive success, including optimal embryonic development and healthy offspring, greatly depends on the integrity of the sperm chromatin structure. It is now well documented that DNA damage in sperm is linked to reproductive failures both in natural and assisted conception (Assisted Reproductive Technologies [ART])...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27980786/sperm-dna-damage-and-its-role-in-ivf-and-icsi
#10
REVIEW
Phil Vu Bach, Peter N Schlegel
While the semen analysis has traditionally been relied upon to differentiate fertile and infertile men, its utility has been questioned in the current era of assisted reproductive technologies. The desire for more sophisticated diagnostic and predictive tools has led to increased use of sperm DNA damage in the management of male infertility. Despite the availability of numerous assays to measure sperm DNA damage, our understanding of the etiology, measurement, and clinical implications of sperm DNA damage remains incomplete...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27895921/literature-review-of-vaccine-related-adverse-events-reported-from-hpv-vaccination-in-randomized-controlled-trials
#11
Mohamed Macki, Ali A Dabaja
BACKGROUND: The human papilloma virus (HPV) infections were addressed with two FDA-approved HPV vaccines: quadrivalent and bivalent vaccine. The objective of this manuscript is to determine the safety of the HPV vaccine. RESULTS: A search of PubMed articles for "human papillomavirus vaccine" was used to identify all-type HPV clinical studies prior to October 2014. A refined search of clinical trials, multicenter studies, and randomized studies were screened for only randomized controlled trials comparing HPV vaccine to controls (saline placebo or aluminum derivatives)...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27833751/leydig-cell-tumor-of-the-testis-with-azoospermia-and-elevated-delta4-androstenedione-case-report
#12
J Prasivoravong, A-L Barbotin, A Derveaux, C Leroy, X Leroy, P Puech, V Mitchell, F Marcelli, J-M Rigot
BACKGROUND: Secreting interstitial cell (Leydig cell) tumors are rare. In adults, the clinical picture and steroid levels are variable. CASE PRESENTATION: This paper presents a case of left testicular tumor, showing azoospermia with normal serum level of total testosterone, collapsed FSH and LH, and high delta4 androstenedione. Histopathological investigation revealed a Leydig cell tumor. TESE allowed spermatozoa extraction and freezing. Testicular histology found hypospermatogenesis and germ-cell aplasia with interstitial fibrosis...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27800162/gonadal-response-after-a-single-dose-stimulation-test-with-recombinant-human-chorionic-gonadotropin-rhcg-in-patients-with-isolated-prepubertal-cryptorchidism
#13
Leticia Ribeiro Oliveira, Thais Kataoka Homma, Renata Reis Woloszynek, Vinícius Nahime Brito, Carlos Alberto Longui
BACKGROUND: The evaluation of prepubertal gonadal Leydig cells secretion requires gonadotropin stimulation. Urinary hCG (human chorionic gonadotropin) is currently unavailable in many countries, however, recombinant hCG (rhCG) can be used. Our aim was to evaluate rhCG-stimulated testicular hormones in a group of patients with cryptorchidism. METHODS: We evaluated 31 prepubertal boys (age range, 0.75-9.0 years) presenting with unilateral (n = 24) or bilateral (n = 7) cryptorchidism...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27777778/to-be-or-not-to-be-fertile-that-is-the-question
#14
N Swierkowski-Blanchard, L Alter, S Salama, C Muratorio, M Bergere, M Jaoul, F Vialard, M Bailly, J Selva, F Boitrelle
BACKGROUND: According to our literature analysis, there are no data focused on spermatozoa emotional representations in childless men and data on the emotional repercussions of a diagnosis of infertility on men are still scarce. Thus, in this work, we investigated what the presence or absence of spermatozoa in the semen symbolize for men. MATERIAL AND METHODS: To answer this question, 441 childless heterosexual men participated in an anonymous, prospective, Internet-based survey...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27708783/sperm-dna-damage-and-assisted-reproductive-technologies-reasons-to-be-cautious
#15
Joël R Drevet
No abstract text is available yet for this article.
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27672439/zinner-s-syndrome-report-of-two-cases-and-review-of-the-literature
#16
Amine Slaoui, Souhail Regragui, Abdelouahad Lasri, Tarik Karmouni, Khalid El Khader, Abdellatif Koutani, Ahmed Ibn Attya
BACKGROUND: Congenital malformations of the seminal vesicle are uncommon, and most of them are cystic malformations. If an insult occurs between the 4th and the 13 h gestational week, the embryogenesis of the kidney, ureter, seminal vesicle, and vas deferens could be altered. Cysts of the seminal vesicle may appear with a mass effect, dysuria, epididymitis, or obstruction of the gastrointestinal and genitourinary tracts. Approximately two thirds of them are associated with ipsilateral renal agenesis, because both the ureteral buds and seminal vesicles originate from the mesonephric (Wolffian) duct...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27512580/a-pilot-study-about-infertile-men-s-awareness-of-their-reprotoxic-exposures-and-the-intervention-of-occupational-medicine-to-assess-them
#17
Amélie Christiaens, Irène Sari-Minodier, Sophie Tardieu, Oana Ianos, Sébastien Adnot, Blandine Courbiere, Jeanne Perrin
BACKGROUND: Male infertility related to professional reprotoxic exposure has been assessed in several studies. Collaboration between occupational physicians and patients can yield information about the preventive measures that can be taken to avoid such exposure. The use of preventive measures is determined by the collaboration between reproductive medicine and occupational medicine and also by the patient's awareness of reprotoxic occupational exposures. Our andrology laboratory developed a systematic environmental interview that an occupational physician administers before semen analysis to assess patients' occupational reprotoxic chemical and physical exposures...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27398217/is-intracouple-assisted-reproductive-technology-an-option-for-men-with-large-headed-spermatozoa-a-literature-review-and-a-decision-guide-proposal
#18
Bruno Guthauser, Xavier Pollet-Villard, Florence Boitrelle, Francois Vialard
Although the presence of spermatozoa with an abnormally large head is rare, it is associated with low fertility or even total infertility. We reviewed the literature on assisted reproductive technology (ART) strategies and outcomes for men with large-headed spermatozoa. We also discuss additional analyses that can usefully characterize sperm defects and help with the choice between intra-couple ART and insemination with donor sperm. Lastly, we propose a classification for cases of large-headed spermatozoa.
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27340554/gut-endotoxin-leading-to-a-decline-in-gonadal-function-gelding-a-novel-theory-for-the-development-of-late-onset-hypogonadism-in-obese-men
#19
Kelton Tremellen
Obesity is an increasing public health problem, with two-thirds of the adult population in many Western countries now being either overweight or obese. Male obesity is associated with late onset hypogonadism, a condition characterised by decreased serum testosterone, sperm quality plus diminished fertility and quality of life. In this paper we propose a novel theory underlying the development of obesity related hypogonadism- the GELDING theory (Gut Endotoxin Leading to a Decline IN Gonadal function). Several observational studies have previously reported an association between obesity related hypogonadism (low testosterone) and systemic inflammation...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27051521/ultrastructural-localization-and-distribution-of-nardilysin-in-mammalian-male-germ-cells
#20
D Segretain, J Gilleron, J N Bacro, M Di Marco, D Carette, G Pointis
BACKGROUND: NRD convertase, also termed Nardilysin, is a Zn(++) metalloendopeptidase that specifically cleaves the N-terminus of arginine and lysine residues into dibasic moieties. Although this enzyme was found located within the testis, its function in male reproduction is largely unknown. In addition, the precise distribution of this enzyme within germ cells remains to be determined. METHODS: To answer these questions, we developed an immuno-gold electron microscopy analysis to detect Nardilysin at ultrastructural level in mice...
2016: Basic and Clinical Andrology
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