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Male factor infertility

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https://www.readbyqxmd.com/read/29450815/factors-affecting-reproductive-performance-in-dromedary-camel-herds-in-saudi-arabia
#1
Ahmed Ali, Derar Derar, Abdulhadi Alsharari, Assaf Alsharari, Rashid Khalil, Tariq I Almundarij, Yaser Alboti, Fahd Al-Sobayil
A survey of 7122 dromedary camels in 115 herds in Saudi Arabia was used to estimate the effects of herd size (HZ; < 25 vs. 25-49 vs. 50-100 vs. > 100 camels), herder/camels ratio (H/C; 1:< 25 vs. 1:25-50 vs. 1:> 50), manager experience (ME; < 5 vs. 5-10 vs. > 10 years), male/females ratio (M/F), housing system (HS; free vs. closed vs. mixed), length of the breeding season (winter vs. winter and spring vs. fall, winter and spring), age at first mating (3 vs. > 3 years), and time of mating after parturition (≤ 3 vs...
February 15, 2018: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29441603/molecular-analysis-of-cag-repeat-length-of-the-androgen-receptor-gene-and-y-chromosome-microdeletions-among-jordanian-azoospermic-infertile-males
#2
O Batiha, S Haifawi, M Al-Smadi, G J Burghel, Z Naber, A M Elbetieha, K Bodoor, A Al Sumadi, S Swaidat, Y Jarun, A Abdelnour
Assisted reproductive technology is a common procedure which helps millions of couples who suffer fertility problems worldwide every year. Screening for genetic abnormalities prior to such procedure is very important to prevent the transmission of harmful genetic mutations to future generations. Microdeletions within the azoospermia factor (AZF) region of the Y chromosome and the expansion of the CAG trinucleotides in the androgen receptor (AR) gene are among the susceptible causes of male infertility in different ethnic groups...
February 14, 2018: Andrologia
https://www.readbyqxmd.com/read/29435181/hyperglycemia-induced-testicular-damage-in-type-2-diabetes-mellitus-rats-exhibiting-microcirculation-impairments-associated-with-vascular-endothelial-growth-factor-decreased-via-pi3k-akt-pathway
#3
Lingli Long, Han Qiu, Bing Cai, Ningning Chen, Xiaofang Lu, Shuhui Zheng, Xiaoxin Ye, Yubin Li
As an endocrine disease, type 2 diabetes mellitus (T2DM) can cause testicular damage which induces male infertility. However, the underlying mechanism is still not clear. We prove that T2DM induced testicular microcirculation impairment involves the decrease of VEGF and these actions are regulated by PI3K/Akt pathway. In our study, rats were divided into three groups (n=8): control group, diabetes group and diabetes + VEGF group. Intraperitoneal injection of streptozotocin (STZ, 65mg/Kg, at 9th week) and daily high-fat diet were used to establish T2DM rat model...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29417282/conventional-in-vitro-fertilization-ivf-or-intracytoplasmic-sperm-injection-icsi-which-is-preferred-for-advanced-age-patients-with-five-or-fewer-oocytes-retrieved
#4
Hui Liu, Haibin Zhao, Guanling Yu, Mei Li, Shuiying Ma, Haozhen Zhang, Keliang Wu
PURPOSE: To investigate the clinical outcomes of conventional IVF and ICSI in female patients aged 40 years and over with no more than five oocytes retrieved and non-male factor infertility. METHODS: A retrospective study of a cohort of 644 patients undergoing IVF/ICSI treatment. The 534 female patients aged ≧ 40 years with no more than five oocytes retrieved and non-male factor infertility undergoing their first conventional IVF cycles were assigned in IVF group...
February 7, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29414604/derivation-of-human-induced-pluripotent-stem-cell-line-husti001-a-from-a-40-year-old-patient-with-idiopathic-infertility
#5
Fang Fang, Zili Li, Qian Zhao, Zhen Ye, Kai Zhao, Xiuli Gu, Shiliang Shen, Renee A Reijo Pera, Chengliang Xiong
Human fibroblasts were isolated from foreskin of a clinically diagnosed 40-year old patient with idiopathic infertility. The fibroblasts were reprogrammed with the Yamanaka KOSM transcriptional factors using the retroviral vectors. The obtained induced pluripotent stem cell (iPSC) line showed pluripotency verified by the expression of pluripotency markers, NANOG, SOX2, OCT4, TRA-1-60, and SSEA-4. And the iPSC line was demonstrated to have the three germ layers differentiation capacity in vivo by teratoma assay...
January 27, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29411905/foxo1-targeting-by-capsaicin-reduces-tissue-damage-after-testicular-torsion
#6
N Javdan, S A Ayatollahi, M Iqbal Choudhary, S Al-Hasani, H Pazoki-Toroudi
Testicular torsion-related oxidative stress causes a sequential chain of DNA damage, lipid peroxidation and cell death that leads to the derangement in the sperm functions and infertility. Capsaicin that has been applied for pain relief and cancer prevention possesses antioxidant properties which can be exploited to confer cell survival under ischaemic testis damage. Wistar male rats weighing 150-200 g were randomly divided into four groups: (i) sham group (all procedures except torsion of testis), (ii) ischaemia group (TT group), (iii) three TT groups treated with different dose of capsaicin (TT + different doses of Cap) and (iv) three control groups treated with different doses of capsaicin (100, 500 and 1000 ug/ml)...
February 7, 2018: Andrologia
https://www.readbyqxmd.com/read/29406062/male-infertility-diagnosis-and-treatment-in-the-era-of-in%C3%A2-vitro-fertilization-and-intracytoplasmic-sperm-injection
#7
REVIEW
Michael M Pan, Mark S Hockenberry, Edgar W Kirby, Larry I Lipshultz
As assisted reproductive technologies use increases, the evaluation of male factor infertility has often become overlooked. However, male evaluation remains critically important, with benefits seen in overall health, as well as in natural and assisted pregnancy and birth rates. A comprehensive assessment of the male partner should be offered to all couples seeking infertility care.
March 2018: Medical Clinics of North America
https://www.readbyqxmd.com/read/29404532/y-chromosome-microdeletions-frequency-in-idiopathic-azoospermia-oligoasthenozoospermia-and-oligospermia
#8
Delnya Gholami, Hamideh Jafari-Ghahfarokhi, Maryam Nemati-Dehkordi, Hossien Teimori
Background: Genetic factors are candidates for about 30% of male infertility with sperm production-related abnormalities. Y chromosome microdeletions are responsible for around 10% of male infertility. These microdeletions generally occur in azoospermia factor on the Yq. That is often associated with the quantitative reduction of sperm. Objective: The aim of this cross-sectional study was to determine the frequency of Yq microdeletions among idiopathic azoospermic, oligoasthenozoospermic, and oligospermic men in Shohada infertility center, Chaharmahal va Bakhtiari province...
November 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29392876/paternal-age-negative-impact-on-sperm-genome-decays-and-ivf-outcomes-after-40-years
#9
Ismail Kaarouch, Nouzha Bouamoud, Aicha Madkour, Noureddine Louanjli, Brahim Saadani, Said Assou, Smahane Aboulmaouahib, Saaid Amzazi, Henri Copin, Moncef Benkhalifa, Sefrioui Omar
This study assessed sperm quality declining on relation to paternal age and its impact on in vitro fertilization (IVF) outcomes in order to estimate the APA (Advanced Paternal Age) cutoff. For this, 83 couples undergoing IVF treatment for male factor infertility were enrolled. The women age was ≤39 years, whereas the men were divided in two groups: APA (n = 41; age≥40 years) and young (Y) (n = 42; age < 40 years). Conventional semen parameters (volume, concentration, motility, vitality and morphology) were analyzed in the collected sperm samples...
February 2, 2018: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29392759/endothelial-dysfunction-marker-ykl-40-is-elevated-in-male-patients-with-idiopathic-infertility
#10
S M Hanafy, H H Sabry, J H Sabry, A M Hamed
Metabolic syndrome represents a collection of cardiovascular risk factors, including overweight, hypertension, dyslipidemia and impaired glucose metabolism, with insulin resistance. In recent years, the potential relationship between metabolic syndrome and male factor infertility has been studied. As endothelial dysfunction is the hallmark of metabolic syndrome, the aim of this work was to assess serum levels of YKL-40 as a marker of endothelial dysfunction in male patients with idiopathic infertility. The study revealed that YKL-40 levels were elevated in patients than controls denoting that endothelial dysfunction might play a role in the pathogenesis of idiopathic infertility and that YKL-40 as a marker of endothelial dysfunction could be a useful marker of idiopathic infertility...
February 2, 2018: Andrologia
https://www.readbyqxmd.com/read/29389999/chinmo-prevents-transformer-alternative-splicing-to-maintain-male-sex-identity
#11
Lydia Grmai, Bruno Hudry, Irene Miguel-Aliaga, Erika A Bach
Reproduction in sexually dimorphic animals relies on successful gamete production, executed by the germline and aided by somatic support cells. Somatic sex identity in Drosophila is instructed by sex-specific isoforms of the DMRT1 ortholog Doublesex (Dsx). Female-specific expression of Sex-lethal (Sxl) causes alternative splicing of transformer (tra) to the female isoform traF. In turn, TraF alternatively splices dsx to the female isoform dsxF. Loss of the transcriptional repressor Chinmo in male somatic stem cells (CySCs) of the testis causes them to "feminize", resembling female somatic stem cells in the ovary...
February 1, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29383942/the-association-between-trans-fatty-acids-infertility-and-fetal-life-a-review
#12
Hande Çekici, Yasemin Akdevelioğlu
Trans fatty acids (TFAs) are thought to affect reproductive health by causing adverse effects on sperm morphology and ovum quality as a result of changing membrane lipid composition which, in turn, leads to impairment in metabolic pathways. This literature review examines the evidence for the effects of dietary TFAs on male and female infertility. Studies conducted between 2007 and 2017 on the effect of dietary TFAs on human reproductive health and fetal life have been included. They indicate that TFA intakes are inversely proportional to sperm concentration and total sperm count and exhibit a positive correlation with asthenospermia, as well as an adverse association on sperm concentration and semen quality...
January 31, 2018: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/29382704/testicular-transcriptional-signatures-associated-with-high-fertility
#13
Marten Michaelis, Alexander Sobczak, Dirk Koczan, Martina Langhammer, Norbert Reinsch, Jennifer Schön, Joachim M Weitzel
Factors of high fertility are poorly described. The majority of transgenic or knockout models with a reproductive phenotype are subfertile or infertile phenotypes. Few genotypes have been linked to improved reproductive performance (0.2%) or increased litter size (1%). In this study, we used a unique mouse model, fertility line FL1, selected for 'high fertility' for more than 170 generations. This strain has almost doubled the number of littermates as well as their total birth weight accompanied by an elevated ovulation rate and increased numbers of corpora lutea compared to a randomly mated and unselected control line (Ctrl)...
February 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29375040/melatonin-advanced-oxidation-protein-products-and-total-antioxidant-capacity-as-seminal-parameters-of-prooxidant-antioxidant-balance-and-their-connection-with-expression-of-metalloproteinases-in-context-of-male-fertility
#14
E M Kratz, A Piwowar
Currently, in highly developed, industrialized countries male factors are identified as the primary cause of infertility in about 60% of childless couples. Standard semen analysis parameters, such as sperm morphology, number and motility, are important in predicting the fertility of large populations, but they are not sufficient to fully specify a particular donor sperm's ability to fertilize the egg. The semen also comprises components, which may also affect sperm fertilizing ability and which have thus far remained little explored: the biochemical parameters of the seminal plasma secreted by the testis, the seminiferous tubules and the prostate gland, such as: matrix metalloproteinases (MMP-2 and MMP-9) and their specific tissue inhibitors (TIMP-1 and TIMP-2)...
October 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29373757/mutations-involving-the-sry-related-gene-sox8-are-associated-with-a-spectrum-of-human-reproductive-anomalies
#15
Marie-France Portnoi, Marie-Charlotte Dumargne, Sandra Rojo, Selma F Witchel, Andrew J Duncan, Caroline Eozenou, Joelle Bignon-Topalovic, Sventlana A Yatsenko, Aleksandar Rajkovic, Miguel Reyes-Mugica, Kristian Almstrup, Lelia Fusee, Yogesh Srivastava, Sandra Chantot-Bastaraud, Capucine Hyon, Christine Louis-Sylvestre, Pierre Validire, Caroline de Malleray Pichard, Celia Ravel, Sophie Christin-Maitre, Raja Brauner, Raffaella Rossetti, Luca Persani, Eduardo H Charreau, Liliana Dain, Violeta A Chiauzzi, Inas Mazen, Hassan Rouba, Caroline Schluth-Bolard, Stuart MacGowan, W H Irwin McLean, Etienne Patin, Ewa Rajpert-De Meyts, Ralf Jauch, John C Achermann, Jean-Pierre Siffroi, Ken McElreavey, Anu Bashamboo
SOX8 is an HMG-box transcription factor closely related to SRY and SOX9. Deletion of the gene encoding Sox8 in mice causes reproductive dysfunction but the role of SOX8 in humans is unknown. Here, we show that SOX8 is expressed in the somatic cells of the early developing gonad in the human and influences human sex-determination. We identified two individuals with 46,XY disorders/differences in sex development (DSD) and chromosomal rearrangements encompassing the SOX8 locus and a third individual with 46,XY DSD and a missense mutation in the HMG-box of SOX8...
January 24, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29371826/long-term-clinical-outcomes-of-testicular-sperm-extraction-and-intracytoplasmic-sperm-injection-for-infertile-men
#16
Noriyuki Okuyama, Ryuichiro Obata, Nao Oka, Yusuke Nakamura, Hiromitsu Hattori, Yukiko Nakajo, Nobuya Aono, Masae Koizumi, Mayumi Toya, Koichi Nagao, Toshihiro Tai, Tomoko Hashimoto, Hideki Igarashi, Koichi Kyono
Purpose: To find the best methods to achieve the highest pregnancy and birth rates for couples needing testicular sperm extraction (TESE)-intracytoplasmic sperm injection (ICSI). Methods: Retrospectively studied were 801 patients with male factor infertility who had undergone TESE-ICSI between April, 1996 and July, 2016 and who had been categorized into four groups: obstructive azoospermia (OA); non-obstructive azoospermia (NOA); Klinefelter syndrome (KS); and cryptozoospermia (Crypt)...
January 2018: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29371820/nationwide-survey-of-urological-specialists-regarding-male-infertility-results-from-a-2015-questionnaire-in-japan
#17
Yasushi Yumura, Akira Tsujimura, Takashi Imamoto, Yukihiro Umemoto, Hideyuki Kobayashi, Koji Shiraishi, Takeshi Shin, Hisanori Taniguchi, Koji Chiba, Yasushi Miyagawa, Teruaki Iwamoto
Purpose: To investigate the incidence, etiology, treatment indications, and outcomes regarding infertile male patients in Japan. Methods: Between April, 2014 and March, 2015, the authors contacted 47 clinical specialists in male infertility who had been certified by the Japan Society for Reproductive Medicine. The participating clinicians were sent a questionnaire regarding information on their infertile patients, according to etiology and the number and success rates of male infertility operations that had been performed in their practice...
January 2018: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29371815/revolutionizing-male-fertility-factor-research-in-mice-by-using-the-genome-editing-tool-crispr-cas9
#18
REVIEW
Ferheen Abbasi, Haruhiko Miyata, Masahito Ikawa
Background: Reproductive research is quintessential in understanding not only the cause of infertility, but also for creating family planning tools. The knockout (KO) system approach is conducive to discovering genes that are essential for fertility in mice. However, in vivo research has been limited due to its high cost and length of time needed to establish KO mice. Methods: The mechanisms behind the CRISPR/Cas9 system and its application in investigating male fertility in mice are described by using original and review articles...
January 2018: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29370625/re-men-s-knowledge-of-their-own-fertility-a-population-based-survey-examining-the-awareness-of-factors-that-are-associated-with-male-infertility
#19
Craig Niederberger
No abstract text is available yet for this article.
August 2017: Journal of Urology
https://www.readbyqxmd.com/read/29370409/does-the-endometrial-gene-expression-of-fertile-women-vary-within-and-between-cycles
#20
Gloria E Evans, Gregory T M Phillipson, Peter H Sykes, Les A McNoe, Cristin G Print, John J Evans
STUDY QUESTION: Does gene expression of putative endometrial implantation markers vary in expression between menstrual cycles? SUMMARY ANSWER: In fertile women the expression of certain genes exhibits a pattern of stable regulation.which is not affected even when sampled twice in one cycle. WHAT IS KNOWN ALREADY: Successful implantation occurs in a minority of IVF embryo transfers. In contrast to knowledge regarding the ovulatory process, there is a sparse understanding of endometrial genes critical to implantation...
January 23, 2018: Human Reproduction
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