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Andrologia

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https://www.readbyqxmd.com/read/29665142/risk-factors-for-late-onset-hypogonadism
#1
Q T Yang, K S Wu, Z J Li, W C Li, L Lu, H Q Wu, Y Y Zhuang, X X Sui
The European Male Aging Study (EMAS) has recently defined strict diagnostic criteria for late-onset hypogonadism (LOH) including the levels of serum total testosterone (TT), free testosterone (FT) and three sexual symptoms. However, there is no report on risk factors for LOH using these criteria. In this study, we investigated risk factors for LOH based on these criteria. We recruited 277 men (aged 36-80 years) who completed both a health check-up and two questionnaires (a health and lifestyle questionnaire, and a sexual function questionnaire)...
April 17, 2018: Andrologia
https://www.readbyqxmd.com/read/29665136/application-of-lectin-microarrays-for-the-analysis-of-seminal-plasma-glycome
#2
J Kołodziejczyk, O Blixt, B Olejnik, M Zimmer, M Ferens-Sieczkowska
We report application of lectin microarrays, exploiting simultaneous interaction of seminal plasma samples with multiple lectins of different sugar specificities to compare the glycomes of fertile and infertile men. The results indicate reduced lectin reactivity associated with decreased fertility, especially affecting oligozoospermic subjects and probably O-glycosylation. Lectin microarrays may become a potent tool for semen analysis in search of the association of glycosylation and male fertility.
April 17, 2018: Andrologia
https://www.readbyqxmd.com/read/29665107/a-case-of-a-rare-variant-of-klinefelter-syndrome-47-xy-i-x-q10
#3
T Kondo, S Kuroda, K Usui, K Mori, T Asai, T Takeshima, T Kawahara, H Hamanoue, H Uemura, Y Yumura
Klinefelter syndrome is a condition in which a male patient has one Y chromosome and one or more extra X chromosomes. It is the most common sex chromosome disorder. Klinefelter syndrome is distinguished by many clinical features, such as infertility, high gonadotropin and low testosterone levels, increased height, and sparse body and facial hair. We report the case of a 32-year-old man who visited our hospital complaining of male infertility. Semen analysis showed azoospermia, and chromosomal analysis revealed a 47,XY,i(X)(q10) karyotype, which is a rare variant of Klinefelter syndrome...
April 17, 2018: Andrologia
https://www.readbyqxmd.com/read/29659036/therapeutic-effect-of-thymoquinone-against-lead-induced-testicular-histological-damage-in-male-wistar-rats
#4
A Mabrouk
Lead (Pb) is a nonthreshold multi-targeted toxicant that causes alterations in different organs of the body, especially the gonads. This study was aimed to investigate the possible protective effect of thymoquinone (TQ), the major active ingredient of volatile oil of Nigella sativa seeds, against Pb-induced testicular histological damage. Adult male rats were randomised into four groups as follows: control group received no treatment, Pb group was exposed to 2000 ppm of Pb acetate in drinking water, Pb-TQ group was cotreated with Pb plus TQ (5 mg/kg/day, per os) and TQ group receiving only TQ...
April 16, 2018: Andrologia
https://www.readbyqxmd.com/read/29656391/proteomic-analysis-of-sperm-proteins-in-infertile-men-with-high-levels-of-reactive-oxygen-species
#5
A Ayaz, A Agarwal, R Sharma, N Kothandaraman, Z Cakar, S Sikka
Oxidative stress is a significant risk factor for male infertility. A pro-oxidant testicular environment may alter the expression profile of functional sperm proteins and result in poor sperm quality. Patients and donors were divided into ROS (-) and ROS (+) groups. Using computational studies, and data mining of available literature on spermatozoa, oxidative stress and proteomics, we identified three core regulatory proteins angiotensin-converting enzyme (ACE), heat-shock protein (Hsp70) family A member 2 (HSPA2) and ribosomal protein subunit 27A (RPS27A) and seven interlink proteins NOS2, SUMO2, UBL4A, FBXO25, MAP3K3, APP and UBC...
April 15, 2018: Andrologia
https://www.readbyqxmd.com/read/29644708/reactive-oxygen-species-impact-on-sperm-dna-and-its-role-in-male-infertility
#6
REVIEW
A D Bui, R Sharma, R Henkel, A Agarwal
Reactive oxygen species (ROS) have been extensively studied as a cause of male infertility. Excessive levels of ROS coupled with a deficiency in antioxidants can lead to oxidative stress (OS), which in turn can lead to nuclear and mitochondrial DNA damage, telomere shortening, epigenetic alterations and Y chromosomal microdeletions. In this review, we discuss how OS induces DNA damage and the types of DNA damage that can occur. We also briefly touch on the clinical consequences of OS-induced DNA damage.
April 11, 2018: Andrologia
https://www.readbyqxmd.com/read/29607523/a-new-cause-of-ischaemic-priapism-synthetic-cannabinoids
#7
M Ortac, Y Pazır, A Kadıoğlu
Priapism is a urological emergency that needs early intervention and may lead to irreversible cavernosal damage. Ischaemic priapism is the most common type, which is frequently idiopathic and commonly associated with haematological diseases, medications or recreational drugs. Synthetic cannabinoids (SCs) have been increasingly used all over the world, particularly among young-adult population. SCs can cause severe adverse effects on several organ systems. However, there are no studies in the literature which have stated the possible relationship between using of SCs and priapism...
April 1, 2018: Andrologia
https://www.readbyqxmd.com/read/29582449/the-hogg1-ser326cys-polymorphism-and-male-subfertility-in-taiwanese-patients-with-varicocele
#8
S S-S Chen, L-P Chiu
To investigate the association between the human 8-oxoguanine DNA glycosylase 1 (hOGG1) gene Ser326Cys polymorphism and male subfertility in Taiwanese patients with varicocele, we made a prospective study. Ninety young male patients with varicocele (group 1), 50 young male patients with subclinical varicocele (group 2) and 30 normal young male patients without varicocele (group 3) were recruited in this study. The hOGG1 null homozygous genotype (Cys/Cys) and the occurrence of a 4,977-bp deletion in mitochondrial DNA and mitochondrial copy number in spermatozoa were determined by polymerase chain reaction...
March 26, 2018: Andrologia
https://www.readbyqxmd.com/read/29575065/evidence-for-the-role-of-insl3-on-sperm-production-in-boars-by-passive-immunisation
#9
I Minagawa, Y Murata, K Terada, M Shibata, E Y Park, H Sasada, T Kohsaka
Insulin-like factor 3 (INSL3), previously called relaxin-like factor, is essential for foetal testis descent and has been implicated in sperm production in adult males. This study investigated the role of INSL3 in sperm production by examining the effect of neutralising INSL3 by passive immunisation on testicular function and sperm output in boars. Six male Duroc boars were randomly assigned to passive immunisation and control groups (n = 3 each). The immunisation group was intravenously injected with an IgG fraction of anti-INSL3 antibody developed against the B domain of INSL3 at 2-week intervals from 21-40 weeks of age...
March 25, 2018: Andrologia
https://www.readbyqxmd.com/read/29574984/endopeptidase-inhibition-attenuates-the-contraction-induced-by-big-endothelin-1-of-isolated-human-penile-erectile-tissue
#10
P Shahin, H E Rahardjo, A Bannowsky, D Tsikas, M Sohn, M A Kuczyk, S Ückert
Peptides, such as C-type natriuretic peptide (CNP), vasoactive intestinal polypeptide (VIP) and endothelin 1 (ET-1), are involved in the control of penile erectile tissue (corpus cavernosum = CC). Inhibiting the degradation of CNP and VIP or conversion of Big ET-1 into ET-1 by endopeptidase enzymes should result in an enhancement of CC smooth muscle relaxation. Using the tissue bath technique, responses of isolated CC, challenged by noradrenaline (NA, 1 μm), to increasing concentrations of the endopeptidase inhibitor KC 12615 (1 nm - 10 μm), CNP and VIP (0...
March 25, 2018: Andrologia
https://www.readbyqxmd.com/read/29574923/dna-methylation-level-of-spermatozoa-from-subfertile-and-proven-fertile-and-its-relation-to-standard-sperm-parameters
#11
Y Alkhaled, M Laqqan, S Tierling, C Lo Porto, M E Hammadeh
The epigenetic mechanism plays an important role in spermatogenesis such as DNA methylation where this episode is represented by either switching genes on or off. Twenty-eight samples (14 case and 14 controls) were subjected to Infinium 450K BeadChip arrays to identify genomic regions that differ in sperm DNA methylation patterns in the subfertile compared to the proven fertile group. Then two CpGs were validated by deep bisulphite sequencing on 82 sperm samples. The results screening study revealed eight CpGs were significantly different in their sperm DNA methylation levels between cases and control group...
March 25, 2018: Andrologia
https://www.readbyqxmd.com/read/29569259/varicocele-is-the-root-cause-of-bph-destruction-of-the-valves-in-the-spermatic-veins-produces-elevated-pressure-which-diverts-undiluted-testosterone-directly-from-the-testes-to-the-prostate
#12
M Goren, Y Gat
In varicocele, there is venous flow of free testosterone (FT) directly from the testes into the prostate. Intraprostatic FT accelerates prostate cell production and prolongs cell lifespan, leading to the development of BPH. We show that in a large group of patients presenting with BPH, bilateral varicocele is found in all patients. A total of 901 patients being treated for BPH were evaluated for varicocele. Three diagnostic methods were used as follows: physical examination, colour flow Doppler ultrasound and contact liquid crystal thermography...
March 22, 2018: Andrologia
https://www.readbyqxmd.com/read/29537099/systematic-review-and-meta-analysis-of-the-genetic-association-between-protamine-polymorphism-and-male-infertility
#13
W Jiang, L Shi, H Liu, J Cao, P Zhu, J Zhang, M Yu, Y Guo, Y Cui, X Xia
While several previous studies have proposed an association between male infertility and protamine polymorphism, the reported findings have shown some inconsistency. To evaluate the potential association between the two most common single nucleotide polymorphisms (rs2301365 and rs1646022) in protamine and male infertility, we performed a meta-analysis involving 2713 cases and 2086 controls from 15 published case-controlled studies. Overall, our analysis showed significant associations between the specific protamine single-nucleotide polymorphism (rs2301365) and male infertility, and this association was indicated by all of the models we tested...
March 14, 2018: Andrologia
https://www.readbyqxmd.com/read/29528137/evaluation-of-seminal-plasma-proteomics-and-relevance-of-fsh-in-identification-of-nonobstructive-azoospermia-a-preliminary-study
#14
Z Cui, A Agarwal, B F da Silva, R Sharma, E Sabanegh
Nonobstructive azoospermia (NOA) patients present with high levels of serum FSH. At the protein level, the aetiology and pathways underlying different subtypes of NOA are unclear. The aim was to evaluate quantitatively differences in proteomic profiles of NOA patients presenting with normal serum FSH and normal testicular volume and high serum FSH and small testicular volume. The study comprised of 14 nonobstructive azoospermic men (N = 4; normal FSH and normal testicular volume and N = 10; high FSH and small testicular volume) and seven normozoospermic men...
March 12, 2018: Andrologia
https://www.readbyqxmd.com/read/29527714/clinical-aspects-of-49-infertile-males-with-45-x-46-xy-mosaicism-karyotype-a-case-series
#15
F Mohammadpour Lashkari, M A Sadighi Gilani, A Ghaheri, M R Zamanian, P Borjian Boroujeni, A Mohseni Meybodi, M Sabbaghian
Disorders of sex development (DSD) are congenital abnormalities as an atypical development process in either gonadal or chromosomal structure. It is the cause of the abnormality in phenotype and characteristics. Chromosomal analysis plays an important role in the DSD determination. 45,X/46,XY mosaicism is a rare karyotype, and its prevalence is about 1.5 in 10,000 newborns. It affects the growth, hormonal balance, gonad development and histology. All data such as height, male general appearance, testis size and volume, external genitalia, spermogram and hormonal levels, testis pathology, Y chromosome microdeletion and karyotype, and assisted reproductive technology (ART) outcome were recorded based on patients profile and history...
March 12, 2018: Andrologia
https://www.readbyqxmd.com/read/29527711/relationship-between-nuclear-dna-fragmentation-mitochondrial-dna-damage-and-standard-sperm-parameters-in-spermatozoa-of-fertile-and-sub-fertile-men-before-and-after-freeze-thawing-procedure
#16
H Amor, A Zeyad, Y Alkhaled, M Laqqan, A Saad, H Ben Ali, M E Hammadeh
The aim of this study was to assess the stability of nuclear and mitochondrial DNA (n-DNA and mt-DNA) of spermatozoa under freeze-thawing and to find out the correlation between them and their association with standard sperm parameters. Forty-three semen samples were collected from fertile (G.1; n = 29) and sub-fertile (G.2; n = 14). N-DNA fragmentation was determined by TUNEL assay and mt-DNA using caspase 3 staining. Each semen sample was frozen at -196°C by the programmed freezer. Freeze-thawing decrease vitality, total motility and membrane integrity from (43...
March 12, 2018: Andrologia
https://www.readbyqxmd.com/read/29527703/is-there-any-correlation-between-sperm-parameters-and-chromatin-quality-with-embryo-morphokinetics-in-patients-with-male-infertility
#17
E Mangoli, M A Khalili, A R Talebi, S Ghasemi-Esmailabad, A Hosseini
The main goal was to evaluate the correlation between sperm parameters and chromatin quality with embryo kinetics via time-lapse monitoring system (TLM). A total of 40 couples involved in the ICSI program as a result of male infertility. For assessment of sperm chromatin and DNA quality, we used aniline blue, toluidine blue, chromomycin A3, acridine orange and terminal transferase-mediated deoxyuridine triphosphate biotin end labelling assays. All mature oocytes were injected, and the generated zygotes (2PNs) were cultured in TLM...
March 12, 2018: Andrologia
https://www.readbyqxmd.com/read/29527702/efficacy-and-safety-of-daily-use-of-tadalafil-in-treatment-of-patients-with-premature-ejaculation-a-randomised-placebo-controlled-clinical-trial
#18
M Abu El-Hamd
The study aimed to evaluate the efficacy and safety of the once-daily use of 5 mg tadalafil in the treatment of patients with premature ejaculation (PE). In a single-blind placebo-controlled clinical study, it was carried out on 100 patients with PE. All patients were randomised equally divided into two groups (50 patients each). Group 1 was given placebo in the form of oral multivitamin tablet once a day for 6 weeks. Group 2 was given 5 mg tadalafil once a day for 6 weeks. All patients were asked to complete Arabic Index of Premature Ejaculation (AIPE) before and after the treatment...
March 12, 2018: Andrologia
https://www.readbyqxmd.com/read/29527700/grape-seed-extract-attenuates-dexamethasone-induced-testicular-and-thyroid-dysfunction-in-male-albino-rats
#19
N A Hasona
This study scrutinised the ameliorative properties of grape seed extract (GSE) in dexamethasone (DEX)-induced testicular and thyroid dysfunction associated with oxidative stress in male albino rats. Thirty-two healthy adult male albino rats were divided into four groups of eight animals each: normal, DEX control, DEX + GSE (200 mg/kg body weight) group and DEX + GSE (400 mg/kg body weight) group. The body weight gain and testes weight were assessed. Plasma testosterone and thyroid profile were determined...
March 12, 2018: Andrologia
https://www.readbyqxmd.com/read/29527696/protective-potential-of-royal-jelly-against-cadmium-induced-infertility-in-male-rats
#20
Mohamed M Ahmed, Samir A El-Shazly, Mohamed E Alkafafy, Alaa A Mohamed, Ahmed A Mousa
This study aimed to investigate the protective potential of Royal jelly (RJ) against cadmium (Cd)-induced testicular dysfunction in rats. Thirty-five adult male Wistar rats were assigned into five groups. G I; (control) injected intraperitoneally with saline, G II injected intraperitoneally with a single dose of CdCl2 (1 mg/kg BW), G III received RJ (100 mg/kg BW/day) orally, G IV was pre-treated with RJ for 1 week then, treated with CdCl2 , and G V was co-treated with RJ and CdCl2 . After day 56, serum and tissue samples were collected and analysed...
March 12, 2018: Andrologia
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