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Basic and Clinical Andrology

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/27030808/azoospermia-in-rabbits-following-an-intravas-injection-of-vasalgel-%C3%A2
#14
Donald Waller, David Bolick, Elaine Lissner, Christopher Premanandan, Gary Gamerman
BACKGROUND: Vasectomy is currently the only long-acting contraceptive option available for men, despite increasing demand and potentially significant positive impacts on human health of additional male contraceptive options. Vasalgel ™ is a high molecular weight hydrogel polymer being developed as a non-hormonal long-acting reversible male contraceptive. Vasalgel consists of styrene-alt-maleic acid dissolved in dimethyl sulfoxide, which is distinct from styrene-alt-maleic anhydride materials previously studied...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/26941957/basic-and-clinical-andrology-reviewer-acknowledgement-2015
#15
Roger Mieusset
The editor of Basic and Clinical Andrology would like to thank all of our reviewers who have contributed to the journal in Volume 25 (2015).
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/26893905/semen-quality-of-4480-young-cancer-and-systemic-disease-patients-baseline-data-and-clinical-considerations
#16
Jacques Auger, Nathalie Sermondade, Florence Eustache
BACKGROUND: Except for testicular cancer and Hodgkin's disease, baseline data on semen quality in case of cancers as well as systemic pathologies of the young adult are scarce or based on low sample size. METHODS: Semen quality in patients having testicular cancer (TGCT, n = 2315), Hodgkin's disease (HD, n = 1175), non-Hodgkin's lymphoma (NHL, n = 439), leukemia (L, n = 360), sarcoma (S, n = 208), brain tumour (BT, n = 40), Behcet's disease (Behcet's, n = 68) or multiple sclerosis (MS, n = 73) was studied and compared to that of 1448 fertile men candidates for sperm donation (CSD) and 208 partners of pregnant women (PPW)...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/26855782/anabolic-steroids-abuse-and-male-infertility
#17
Rabih El Osta, Thierry Almont, Catherine Diligent, Nicolas Hubert, Pascal Eschwège, Jacques Hubert
For several decades, testosterone and its synthetic derivatives have been used with anabolic and androgenic purposes. These substances were first restricted to professional bodybuilders, but become more and more popular among recreational athletes. Up to date, 3,000,000 anabolic-androgenic steroids (AAS) users have been reported in the United States with an increasing prevalence, making AAS consumption a major public health growing concern. Infertility is defined by the WHO as the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse and a male factor is present in up to 50 % of all infertile couples...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/26823979/low-serum-insulin-like-growth-factor-1-in-patients-with-erectile-dysfunction
#18
Alper Otunctemur, Emin Ozbek, Suleyman Sahin, Levent Ozcan, Murat Dursun, Emre Can Polat, Mustafa Cekmen, Ozgur Doga Ozsoy, Mustafa Erkoc, Eyup Danis, Muammer Bozkurt
OBJECTIVE: Endothelial dysfunction and microvascular damage play a crurical role in the pathogenesis of erectile dysfunction (ED). Insulin-like growth factor-1 (IGF-1) is one of the growth factors that have a wide range of biologic effects. IGF-1 is an important mediator of cell growth, differentiation and transformation in various tissues. The purpose of the current study was to determine the association between IGF-1 levels and ED. MATERIALS AND METHODS: All men were evaluated for ED and divided into two groups: 80 patients suffering from ED for > 1 year and 80 subjects without ED were enrolled as a control group in this study...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/26635963/testosterone-and-gonadotropins-but-not-shbg-vary-with-ckd-stages-in-young-and-middle-aged-men
#19
Britta Hylander, Mikael Lehtihet
BACKGROUND: The aim of this study was to assess the effects chronic kidney disease (CKD) had on sex hormones and lipids in a subgroup of men between 18 and 50 years old with CKD 1-5 stage without diabetes and not treated with hemodialysis. METHODS: Data were collected from 101 men with different CKD stages. RESULTS: Higher CKD stage (lower function) had a significant negative linear trend on total testosterone level (p < 0.01) and free testosterone level (p < 0...
2015: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/26576287/assessment-of-the-frequency-of-sperm-annulus-defects-in-a-large-cohort-of-patients-presenting-asthenozoospermia
#20
Thassadite Dirami, Baptiste Rode, Jean-Philippe Wolf, Gérard Gacon, Emmanuel Dulioust, Aminata Touré
BACKGROUND: The annulus is a ring-shaped structure located beneath the plasma membrane that connects the midpiece and the principal piece of mammalian sperm flagellum. It has been suggested that the annulus acts as a morphological organizer, guiding flagellum assembly during spermiogenesis, and as a diffusion barrier, confining proteins to distinct compartments of the flagellum in mature sperm. Previous studies on small cohorts of patients have attempted to correlate annulus defects with the occurrence of human asthenozoospermia...
2015: Basic and Clinical Andrology
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