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https://www.readbyqxmd.com/read/28732140/fibroblast-growth-factor-2-fgf2-is-present-in-human-spermatozoa-and-is-related-with-sperm-motility-the-use-of-recombinant-fgf2-to-improve-motile-sperm-recovery
#1
D J Garbarino Azúa, L Saucedo, S Giordana, M L Magri, M G Buffone, F Neuspiller, M H Vazquez-Levin, C I Marín-Briggiler
Fibroblast growth factors (FGFs) and their receptors (FGFRs) regulate several functions of somatic cells. In a previous work, we reported FGFR expression in human spermatozoa and their involvement in motility. This study aimed to evaluate the presence and localization of fibroblast growth factor 2 (FGF2) in human spermatozoa, to determine the relationship of FGF2 levels with conventional semen parameters and to assess the effect of recombinant FGF2 (rFGF2) on sperm recovery in a selection procedure. Western immunoblotting analysis using an antibody against FGF2 revealed an 18-kDa band in sperm protein extracts...
July 21, 2017: Andrology
https://www.readbyqxmd.com/read/28726302/a-multicenter-study-to-evaluate-oxidative-stress-by-oxidation-reduction-potential-a-reliable-and-reproducible-method
#2
A Agarwal, M Arafa, R Chandrakumar, A Majzoub, S AlSaid, H Elbardisi
Seminal oxidative stress (OS) is well-known to affect male fertility status. The discrepancy in OS measurement has hindered its clinical use as a quality indicator for semen. Some tests measured single markers of oxidants or reductants, leading to lack of standardization of results. Oxidation-reduction potential (ORP) is a better representative for OS as it provides an overall measure of the activity of both oxidants and reductants. ORP assessment by MiOXSYS has been introduced as a measure of OS with high specificity in differentiating fertile from infertile semen samples...
July 20, 2017: Andrology
https://www.readbyqxmd.com/read/28719725/effects-of-eupatilin-on-the-contractility-of-corpus-cavernosal-smooth-muscle-through-nitric-oxide-independent-pathways
#3
S H Choo, S W Lee, M R Chae, S J Kang, H H Sung, D H Han, J N Chun, J K Park, C Y Kim, H K Kim, I So
Eupatilin (5,7-dihydroxy-3,4,6-trimethoxyflavone) is one of the main compounds present in Artemisia species. Eupatilin has both antioxidative and anti-inflammatory properties and a relaxation effect on vascular contraction regardless of endothelial function. We evaluated the relaxant effects of eupatilin on the corpus cavernosum (CC) of rabbits and the underlying mechanisms of its activity in human corpus cavernosum smooth muscle (CCSM) cells. Isolated rabbit CC strips were mounted in an organ bath system. A conventional whole-cell patch clamp technique was used to measure activation of calcium-sensitive K(+) -channel currents in human CCSM cells...
July 18, 2017: Andrology
https://www.readbyqxmd.com/read/28709178/inflammatory-reaction-found-in-prostate-specific-material-method-standardization-and-proposed-optimal-cut-off-points
#4
P Korrovits, O Poolamets, R Mändar, M Punab
Prostatitis classification as well as treatment decisions are primarily based on differentiation of the inflammatory status in prostate-specific material. At the same time, methods used for detection of inflammation are semi-quantitative and not finally standardized. The main aim of this study was to suggest more precise methods for detection of prostate inflammatory status. Additional aims were to define optimal cut-off points of various tests in order to discriminate between inflammatory and non-inflammatory condition and to analyze the prevalence of inflammatory prostatitis in the groups of symptomatic prostatitis, lower urinary tract symptoms and control subjects...
July 14, 2017: Andrology
https://www.readbyqxmd.com/read/28709177/effects-of-testosterone-therapy-on-bmi-blood-pressure-and-laboratory-profile-of-transgender-men-a-systematic-review
#5
I Velho, T M Fighera, P K Ziegelmann, P M Spritzer
Testosterone is the main hormonal agent used for cross-sex hormone therapy in female-to-male transgender persons. Our aim was to systematically review the literature concerning the effects of testosterone on body mass index (BMI), blood pressure, hematocrit, hemoglobin, lipid profile, and liver enzymes in transgender men. PUBMED and EMBASE were searched for studies published until March 2017. Studies were included if they reported interventions with any dose of testosterone and comparison of variables before and during treatment...
July 14, 2017: Andrology
https://www.readbyqxmd.com/read/28704597/are-incident-gallstones-associated-to-sex-dependent-changes-with-age-a-cohort-study
#6
D M Shabanzadeh, S A Holmboe, L T Sørensen, A Linneberg, A-M Andersson, T Jørgensen
Age and female sex have repeatedly been identified as gallstone determinants but the underlying mechanisms are not clarified. The objectives of this study were to determine if changes with age in physiology, lifestyle, or reproductive hormones were associated with incident gallstones. A cohort study of a general population random sample (N = 2366) aged 30-60 years was performed. Participants were ultrasound screened for gallstones in 1982-84 and again in 1993-94. Lifestyle data and blood samples were obtained and re-analyzed in 2004...
July 13, 2017: Andrology
https://www.readbyqxmd.com/read/28704587/effects-of-testosterone-administration-and-its-5-alpha-reduction-on-parenchymal-organ-volumes-in-healthy-young-men-findings-from-a-dose-response-trial
#7
T Gagliano-Jucá, E R Tang, S Bhasin, K M Pencina, S Anderson, H Jara, Z Li, K Melamud, S L Coleman, A Aakil, R R Almeida, G Huang, T G Travison, T W Storer, S Basaria
Animal data shows that testosterone administration increases the volume of some parenchymal organs. However, the effects of exogenous testosterone on solid abdominal organs in humans remain unknown. The present study evaluated the effects of testosterone administration on the volume of liver, spleen and kidneys in a dose-response trial. Young healthy men aged 18-50 years participating in the 5α-Reductase (5aR) Trial. All participants received monthly injections of 7.5 mg leuprolide acetate to suppress endogenous testosterone secretion and weekly injections of 50, 125, 300 or 600 mg of testosterone enanthate, and were randomized to receive either 2...
July 13, 2017: Andrology
https://www.readbyqxmd.com/read/28692759/sperm-morphology-assessment-pathophysiology-clinical-relevance-and-state-of-the-art-in-2017
#8
REVIEW
N Gatimel, J Moreau, J Parinaud, R D Léandri
For over 30 years, sperm morphology assessment has been one of the most common tests in evaluation of fertility. This review examines the clinical relevance of sperm morphology assessment in the diagnosis of infertility and in assisted reproductive technology, as well as its analytical reliability. Publications on the pathophysiology, the analytical reliability of the test and its clinical relevance in diagnosis and in Assisted Reproductive Technology (ART) were evaluated. This review compared and discussed study methodologies and results, including patient characteristics, preparation, smear staining methods and classification systems...
July 10, 2017: Andrology
https://www.readbyqxmd.com/read/28662541/reproductive-endocrine-issues-in-men-with-sickle-cell-anemia
#9
REVIEW
A W Huang, O Muneyyirci-Delale
In patients with sickle cell anemia, the sickling of red blood cells is known to cause end-organ damage by infarction. In some men who are affected by sickle cell anemia, the obstruction of venous outflow of the penis causes priapism, which could lead to erectile dysfunction. There is also evidence that the disease is linked to other reproductive issues in men-specifically delayed puberty, low testosterone, and sperm abnormalities-although the causes of these problems are less clear. Treatment of sickle cell anemia can have effects on the reproductive system as well...
June 29, 2017: Andrology
https://www.readbyqxmd.com/read/28637089/sperm-dna-damage-measured-by-sperm-chromatin-structure-assay-in-men-with-a-history-of-undescended-testes
#10
J van Brakel, M Dinkelman-Smit, S M P F de Muinck Keizer-Schrama, F W J Hazebroek, G R Dohle
The aim of this study was to compare sperm DNA damage between men with a history of congenital undescended testis (UDT) and men with a history of acquired UDT. A long-term follow-up study of men with previous UDT was performed. Fifty men with congenital UDT who had undergone orchiopexy at childhood age, 49 men with acquired UDT after a 'wait-and-see'-protocol (e.g. awaiting spontaneous descent until puberty and perform an orchiopexy in case of non-decent), and 22 healthy proven fertile men were included. The DNA fragmentation index (DFI) using sperm chromatin structure assay (SCSA) was used to express the level of sperm DNA damage...
June 21, 2017: Andrology
https://www.readbyqxmd.com/read/28637085/successful-delivery-derived-from-cryopreserved-rare-human-spermatozoa-with-novel-cryopiece
#11
J Sun, W Chen, L Zhou, J Hu, Z Li, Z Zhang, Y Wu
Herein, we report the clinical outcomes following intracytoplasmic sperm injection (ICSI) with cryopiece cryopreserved rare human spermatozoa from severe male factor infertility patients. We established a novel cryopiece system on the basis of previous studies. In this study, 126 spermatozoa from four patients with non-obstructiveazoospermia (NOA) or severe oligozoospermia were stored in cryopiece and then thawed on the day of the oocyte retrieval, 88 (83%) spermatozoa were recovered with a 47.5% (38 of 80) motile rate...
June 21, 2017: Andrology
https://www.readbyqxmd.com/read/28632930/long-term-follow-up-of-intra-cytoplasmic-sperm-injection-conceived-offspring-compared-with-in%C3%A2-vitro-fertilization-conceived-offspring-a-systematic-review-of-health-outcomes-beyond-the-neonatal-period
#12
REVIEW
S R Catford, R I McLachlan, M K O'Bryan, J L Halliday
The use of intra-cytoplasmic sperm injection (ICSI) has increased significantly worldwide, often chosen instead of in vitro fertilization (IVF), yet long-term health outcomes are unknown and health differences between ICSI and IVF conceptions have not been comprehensively assessed. A systematic review of health outcomes of ICSI-conceived offspring beyond the neonatal period compared to IVF-conceived offspring was carried out. PubMed, OVID Medline/Embase, Informit, Web of Science and Proquest databases were searched on 9 November 2016 for studies reporting on health outcomes in ICSI-conceived offspring beyond 28 days after birth...
June 20, 2017: Andrology
https://www.readbyqxmd.com/read/28625022/ethical-moral-and-theological-insights-into-advances-in-male-pediatric-and-adolescent-fertility-preservation
#13
REVIEW
J J Ramstein, J Halpern, A J Gadzinski, R E Brannigan, J F Smith
The successful treatment of boys with cancer has led to increasing attention to preserving their quality of life after completing cancer therapy. One of the top priorities for living a full life is keeping open the opportunity to have children. While sperm banking for males facing sterilizing cancer treatment can be effective, this approach requires subsequent use of reproductive procedures such as in vitro fertilization (IVF) or intrauterine insemination (IUI) to achieve a pregnancy. Advances in fertility preservation techniques may allow pre-pubertal boys to conceive using advanced stem cell technologies and stem cell transplantation in the future...
June 18, 2017: Andrology
https://www.readbyqxmd.com/read/28622464/the-impact-of-drugs-on-male-fertility-a-review
#14
REVIEW
M Semet, M Paci, J Saïas-Magnan, C Metzler-Guillemain, R Boissier, H Lejeune, J Perrin
Beside cytotoxic drugs, other drugs can impact men's fertility through various mechanisms. Via the modification of the hypothalamic-pituitary-gonadal axis hormones or by non-hormonal mechanisms, drugs may directly and indirectly induce sexual dysfunction and spermatogenesis impairment and alteration of epididymal maturation. This systematic literature review summarizes existing data about the negative impact and associations of pharmacological treatments on male fertility (excluding cytotoxic drugs), with a view to making these data more readily available for medical staff...
June 16, 2017: Andrology
https://www.readbyqxmd.com/read/28622443/mir-2909-regulates-isgylation-system-via-stat1-signalling-through-negative-regulation-of-socs3-in-prostate-cancer
#15
Shiekh Gazalla Ayub, Deepak Kaul
One of the well-document strategies adopted by tumour cells for progression is to evade immune surveillance mechanisms. An understanding of the tight interaction between immunity and progression of cancer can provide novel treatment options for different malignancies including prostate cancer (PCa). Here, we have shown that AATF genome encoded miR-2909, known to play role both in immunity and cancer upregulates various interferon stimulating genes (ISGs) including ISGylation system through STAT1. Our results revealed that miR-2909 up-regulates STAT1 through negative regulation of SOCS3 and not through up-regulation of Type 1 interferon (IFN) production...
June 16, 2017: Andrology
https://www.readbyqxmd.com/read/28622434/magnetic-activated-cell-sorting-before-density-gradient-centrifugation-improves-recovery-of-high-quality-spermatozoa
#16
T S Berteli, M G Da Broi, W P Martins, R A Ferriani, P A Navarro
Recent studies have evaluated the use of magnetic-activated cell sorting (MACS) to reduce apoptotic spermatozoa and improve sperm quality. However, the efficiency of using MACS alone, before or after sperm processing by density gradient centrifugation (DGC) has not yet been established. The purpose of this study is to determine the optimal protocol of MACS in assisted reproduction techniques (ART). Thus, we compared sperm quality obtained by DGC alone (DGC), DGC followed by MACS (DGC-MACS), MACS followed by DGC (MACS-DGC), and MACS alone (MACS), and found that the combined methods (MACS-DGC and DGC-MACS) led to retrieval of less spermatozoa with fragmented DNA compared to the single protocols...
June 16, 2017: Andrology
https://www.readbyqxmd.com/read/28614636/spermatozoa-with-numerical-chromosomal-abnormalities-are-more-prone-to-be-retained-by-annexin-v-macs-columns
#17
M Esbert, A Godo, S R Soares, M Florensa, D Amorós, A Ballesteros, F Vidal
Colloidal super-paramagnetic microbeads conjugated with annexin V are effective for separating apoptotic spermatozoa by MACS as a result of the high affinity of annexin V for externalized PS molecules. The effectiveness of the procedure in reducing the percentage of sperm with fragmented DNA and abnormal morphology has also been reported. However, it is still unknown if it could decrease the percentage of aneuploid spermatozoa. The objective of our prospective study, performed on 16 males with abnormal FISH on spermatozoa, was to assess if MACS columns were useful tools to retain spermatozoa carrying chromosomal abnormalities in semen samples processed after density gradient centrifugation (DGC)...
June 14, 2017: Andrology
https://www.readbyqxmd.com/read/28598554/reproductive-hormones-and-metabolic-syndrome-in-24-testicular-cancer-survivors-and-their-biological-brothers
#18
M Bandak, N Jørgensen, A Juul, J Lauritsen, M G G Kier, M S Mortensen, P S Oturai, J Mortensen, P Hojman, J W Helge, G Daugaard
Testicular cancer survivors have impaired gonadal function and increased risk of metabolic syndrome when compared to healthy controls. However, because of the fetal etiology of testicular cancer, familial unrelated healthy men might not be an optimal control group. The objective of this study was to clarify if testicular cancer survivors have impaired gonadal function and increased risk of metabolic syndrome when compared to their biological brothers. A cross-sectional study of testicular cancer survivors (ClinicalTrials...
June 9, 2017: Andrology
https://www.readbyqxmd.com/read/28597551/testis-specific-isoform-of-na-k-atpase-atp1a4-regulates-sperm-function-and-fertility-in-dairy-bulls-through-potential-mechanisms-involving-reactive-oxygen-species-calcium-and-actin-polymerization
#19
G D Rajamanickam, T Kroetsch, J P Kastelic, J C Thundathil
Traditional bull breeding soundness evaluation (BBSE) eliminates bulls that are grossly abnormal; however, bulls classified as satisfactory potential breeders still vary in field fertility, implying submicroscopic differences in sperm characteristics. The testis-specific isoform of Na/K-ATPase (ATP1A4) is involved in regulation of sperm motility and capacitation in bulls through well-established enzyme activity and signaling functions. The objective was to determine ATP1A4 content, activity and their relationship to post-thaw sperm function and field fertility, using semen samples from low-fertility (LF) and high-fertility (HF) Holstein bulls (n = 20 each) with known FERTSOL rates (measure of field fertility, based on non-return rate)...
June 8, 2017: Andrology
https://www.readbyqxmd.com/read/28591464/risk-of-low-bone-mineral-density-in-testicular-germ-cell-cancer-survivors-association-with-hypogonadism-and-treatment-modality
#20
S Isaksson, K Bogefors, K Åkesson, L Egund, J Bobjer, I Leijonhufvud, A Giwercman
The cure rate of testicular cancer exceeds 95%, but testicular cancer survivors (TCS) are at increased risk of hypogonadism (HG). It has been suggested that TCS have reduced bone mineral density (BMD), but it is unclear whether this is related to HG or a direct effect of cancer therapy. The aim of this study was to evaluate whether TCS have decreased BMD, and if BMD is related to HG and/or the cancer treatment given. We investigated 91 TCS (mean age at diagnosis: 31 years; mean 9.3 years follow-up) and equal number of age matched controls (mean age at inclusion 40...
June 7, 2017: Andrology
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