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Male infertility

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https://www.readbyqxmd.com/read/29331980/dmc1-mutation-that-causes-human-non-obstructive-azoospermia-and-premature-ovarian-insufficiency-identified-by-whole-exome-sequencing
#1
Wen-Bin He, Chao-Feng Tu, Qiang Liu, Lan-Lan Meng, Shi-Min Yuan, Ai-Xiang Luo, Fu-Sheng He, Juan Shen, Wen Li, Juan Du, Chang-Gao Zhong, Guang-Xiu Lu, Ge Lin, Li-Qing Fan, Yue-Qiu Tan
BACKGROUND: The genetic causes of the majority of male and female infertility caused by human non-obstructive azoospermia (NOA) and premature ovarian insufficiency (POI) with meiotic arrest are unknown. OBJECTIVE: To identify the genetic cause of NOA and POI in two affected members from a consanguineous Chinese family. METHODS: We performed whole-exome sequencing of DNA from both affected patients. The identified candidate causative gene was further verified by Sanger sequencing for pedigree analysis in this family...
January 13, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29331304/gender-representation-in-urological-subspecialties
#2
Oluwarotimi S Nettey, Joceline S Fuchs, Stephanie J Kielb, Edward M Schaeffer
OBJECTIVE: To examine associations between urologic subspecialization, surgeon gender and practice patterns among certifying urologists over the last 13 years. MATERIALS AND METHODS: Demographic data of certifying and recertifying urologists (2004 to 2015) was obtained from the American Board of Urology (ABU). We investigated gender-specific trends in self-reported practice type (academic practice, private practice), subspecialization, and employment as a full-time versus part-time physician, relative to certification year and cycle...
January 10, 2018: Urology
https://www.readbyqxmd.com/read/29330490/differentially-expressed-micrornas-between-cattleyak-and-yak-testis
#3
Chuanfei Xu, Shixin Wu, Wangsheng Zhao, TserangDonko Mipam, Jingbo Liu, Wenjing Liu, Chuanping Yi, Mujahid Ali Shah, Shumin Yu, Xin Cai
Cattleyak are interspecific hybrids between cattle and yak, exhibiting the same prominent adaptability as yak and much higher performances than yak. However, male infertility of cattleyak resulted from spermatogenic arrest has greatly restricted their effective utilization in yak breeding. In past decades, much work has been done to investigate the mechanisms of spermatogenic arrest, but little is known about the differences of the post-transcriptional regulators between cattleyak and yak, which may contribute to the impaired spermatogenesis...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330018/testicular-adrenal-rest-tumor-screening-and-fertility-counseling-among-males-with-congenital-adrenal-hyperplasia
#4
Monika Chaudhari, Emilie K Johnson, Daniel DaJusta, Leena Nahata
BACKGROUND: Reduced fertility is a common potential problem among males with congenital adrenal hyperplasia (CAH), with nearly half experiencing impaired sperm production. The major cause of oligo/azoospermia in CAH is testicular adrenal rest tumors (TARTs). Studies indicate that ultrasound screening for TARTs should begin during childhood, yet it remains unclear whether boys with CAH are routinely screened for TARTs and/or counseled about infertility risk and potential interventions such as fertility testing and/or preservation...
December 21, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29329550/systematic-quantitative-analysis-of-h2a-and-h2b-variants-by-targeted-proteomics
#5
Sara El Kennani, Annie Adrait, Olga Permiakova, Anne-Marie Hesse, Côme Ialy-Radio, Myriam Ferro, Virginie Brun, Julie Cocquet, Jérôme Govin, Delphine Pflieger
BACKGROUND: Histones organize DNA into chromatin through a variety of processes. Among them, a vast diversity of histone variants can be incorporated into chromatin and finely modulate its organization and functionality. Classically, the study of histone variants has largely relied on antibody-based assays. However, antibodies have a limited efficiency to discriminate between highly similar histone variants. RESULTS: In this study, we established a mass spectrometry-based analysis to address this challenge...
January 12, 2018: Epigenetics & Chromatin
https://www.readbyqxmd.com/read/29329387/patients-with-acephalic-spermatozoa-syndrome-linked-to-sun5-mutations-have-a-favorable-pregnancy-outcome-from-icsi
#6
Jianzheng Fang, Jingjing Zhang, Fuxi Zhu, Xiaoyu Yang, Yugui Cui, Jiayin Liu
STUDY QUESTION: Are Sad1 and UNC84 domain containing 5 (SUN5) mutations associated with the outcomes of ICSI in patients with acephalic spermatozoa syndrome (ASS)? SUMMARY ANSWER: Despite highly abnormal sperm morphology, ASS patients with SUN5 mutations have a favorable pregnancy outcome following ICSI. WHAT IS KNOWN ALREADY: ASS is a rare cause of infertility characterized by the production of a majority of headless spermatozoa, along with a small proportion of intact spermatozoa with an abnormal head-tail junction...
January 10, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29324596/preterm-delivery-and-low-birth-weight-among-neonates-conceived-with-intracytoplasmic-sperm-injection-compared-with-conventional-in-vitro-fertilization
#7
Sanaz Keyhan, Tracy Truong, Yi-Ju Li, Tia Jackson-Bey, Jennifer L Eaton
OBJECTIVE: To examine the prevalence of prematurity and low birth weight (LBW) among singletons conceived with intracytoplasmic sperm injection (ICSI) compared with those conceived with conventional in vitro fertilization (IVF). METHODS: Using the Society for Assisted Reproductive Technology Clinic Outcomes Reporting System, we conducted a retrospective cohort study of women undergoing a first, fresh autologous ICSI or conventional IVF cycle from 2004 to 2013. Singleton live births were included in the analysis...
January 9, 2018: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29320903/air-pollution-and-human-sperm-sex-ratio
#8
Michał Radwan, Emila Dziewirska, Paweł Radwan, Lucjusz Jakubowski, Wojciech Hanke, Joanna Jurewicz
The present study was designed to address the hypothesis that exposure to specific air pollutants may impact human sperm Y:X chromosome ratio. The study population consisted of 195 men who were attending an infertility clinic for diagnostic purposes and who had normal semen concentration of 15-300 mln/ml (WHO, 2010). Participants represented a subset of men in a multicenter parent study conducted in Poland to evaluate environmental factors and male fertility. Participants were interviewed and provided a semen sample...
January 1, 2018: American Journal of Men's Health
https://www.readbyqxmd.com/read/29320756/generation-of-an-induced-pluripotent-stem-cell-line-from-an-adult-male-with-45-x-46-xy-mosaicism
#9
Yumei Luo, Detu Zhu, Xiangye Xu, Lingxia Ge, Xiaofang Sun, Guokai Chen, Yaoyong Chen
Turner syndrome (TS) with 45,X/46,XY mosaic karyotype is a rare sex chromosome disorder with an occurrence of 0.15‰ at birth. We report the generation of an induced pluripotent stem cell (iPSC) line from peripheral blood mononuclear cells of a Chinese adult male with 45,X/46,XY mosaicism. The iPSC line retains the original 45,X/46,XY mosaic karyotype, expresses pluripotency markers and undergoes trilineage differentiation. Therefore, it offers an unprecedented cellular model to investigate the profound symptoms like infertility of TS in the male, and serve as a useful tool to develop therapies for the disease...
January 5, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29317647/investigation-of-piwi-interacting-rna-pathway-genes-role-in-idiopathic-non-obstructive-azoospermia
#10
Zeeba Kamaliyan, Sara Pouriamanesh, Mohsen Soosanabadi, Milad Gholami, Reza Mirfakhraie
Genes involved in piwi-interacting RNAs (piRNAs) pathway have an essential role in spermatogenesis. HIWI and TDRD proteins are critical for piRNA biogenesis and function. Therefore, Mutations and polymorphisms in HIWI and TDRD genes may play role in male infertility. The aim of the present study was to investigate the role of HIWI2 rs508485 (T>C) and HIWI3 rs11703684 (C>T) polymorphisms and mutational analysis of TDRD5 gene in idiopathic non-obstructive azoospermia in a case-control study including 226 non-obstructive azoospermia patients and 200 fertile males...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29316840/protective-effect-of-motiliperm-in-varicocele-induced-oxidative-injury-in-rat-testis-by-activating-phosphorylated-inositol-requiring-kinase-1%C3%AE-p-ire1%C3%AE-and-phosphorylated-c-jun-n-terminal-kinase-p-jnk-pathways
#11
Kiran Kumar Soni, Li Tao Zhang, Bo Ram Choi, Keshab Kumar Karna, Jae Hyung You, Yu Seob Shin, Sung Won Lee, Chul Young Kim, Chen Zhao, Han-Jung Chae, Hye Kyung Kim, Jong Kwan Park
CONTEXT: MOTILIPERM was prepared as a mixture of extracts of three medicinal herbs [roots of Morinda officinalis How (Rubiaceae), outer scales of Allium cepa L. (Liliaceae) and seeds of Cuscuta chinensis Lamark (Convolvulaceae)]. OBJECTIVE: To investigate the role of reactive oxygen species (ROS)-based endoplasmic reticulum (ER) stress in a rat model of varicocele and the therapeutic efficacy of MOTILIPERM in this model. MATERIALS AND METHODS: Sixty male rats were divided into five experimental groups: a normal control group (CTR + vehicle), a control group administered MOTILIPERM 200 mg/kg (CTR + M 200), a varicocele-induced control group (VC + vehicle) and two varicocele-induced groups administered MOTILIPERM 100 (VC + M 100) or 200 (VC + M 200) mg/kg for 4 weeks...
December 2018: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29315416/human-induced-pluripotent-stem-cells-and-male-infertility-an-overview-of-current-progress-and-perspectives
#12
Fang Fang, Zili Li, Qian Zhao, Honggang Li, Chengliang Xiong
Recently, significant progress has been made in ART for the treatment of male infertility. However, current ART has failed to help infertile patients with non-obstructive azoospermia, unless donor sperm is used. In fact, most couples wish to have their own genetically related child. Human induced pluripotent stem cells (hiPSCs) can be generated from patients' somatic cells and in vitro derivation of functional germ cells from patient-specific iPSCs may provide new therapeutic strategies for infertile couples...
January 5, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29313203/prevalence-and-antimicrobial-resistance-of-ureaplasma-spp-and-mycoplasma-hominis-isolated-from-semen-samples-of-infertile-men-in-shanghai-china-from-2011-to-2016
#13
Y-H Zhou, H-X Ma, Y Yang, W-M Gu
This study was conducted to estimate the prevalence and antimicrobial resistance rate of Ureaplasma spp. and Mycoplasma hominis that were isolated from the semen samples of infertile males in Shanghai, China from 2011 to 2016. A total of 5016 infertile males and 412 healthy male controls were examined. The cultivation, identification, and antimicrobial susceptibilities of Ureaplasma spp. and M. hominis were assessed by using a Mycoplasma IST kit that was performed in parallel to selective solid agar cultivation...
January 8, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29311626/lipopolysaccharide-and-lipotheicoic-acid-differentially-modulate-epididymal-cytokine-and-chemokine-profiles-and-sperm-parameters-in-experimental-acute-epididymitis
#14
Erick J R Silva, Camilla M Ribeiro, André F M Mirim, Alan A S Silva, Renata M Romano, Jorge Hallak, Maria Christina W Avellar
Bacterial infections are the most prevalent etiological factors of epididymitis, a commonly diagnosed inflammatory disease in the investigation of male infertility factors. The influence of early pathogenic mechanisms at play during bacterial epididymitis on reproductive outcomes is little understood. We report here that experimental epididymitis induced in rats by Gram-negative (LPS) and Gram-positive (LTA) bacterial products resulted in differential patterns of acute inflammation in the cauda epididymis. LPS elicited a strong inflammatory reaction, as reflected by upregulation of levels of mRNA for seven inflammatory mediators (Il1b, Tnf, Il6, Ifng, Il10, Nos2 and Nfkbia), and tissue concentration of six cytokines/chemokines (IL1A, IL1B, IL6, IL10, CXCL2 and CCL2) within the first 24 h post-treatment...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29310167/re-male-factor-infertility-and-lack-of-openness-about-infertility-as-risk-factors-for-depressive-symptoms-in-males-undergoing-assisted-reproductive-technology-treatment-in-italy
#15
https://www.readbyqxmd.com/read/29309804/experimental-models-of-testicular-development-and-function-using-human-tissue-and-cells
#16
REVIEW
Melissa Tharmalingam, Anne Jorgensen, Rod T Mitchell
The mammalian testis has two main roles, production of gametes for reproduction and synthesis of steroid- and peptide hormones for masculinization. These processes are tightly regulated and involve complex interactions between a number of germ and somatic cell-types that comprise a unique microenvironment known as the germ stem cell niche. In humans, failure of normal testicular development or function is associated with susceptibility to a variety of male reproductive disorders including disorders of sex development, infertility and testicular cancer...
January 5, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29308626/evaluating-the-effect-of-melatonin-on-has2-and-pgr-expression-as-well-as-cumulus-expansion-and-fertility-potential-in-mice
#17
Maryam Ezzati, Leila Roshangar, Jafar Soleimani Rad, Nahid Karimian
OBJECTIVES: Infertility is a worldwide health problem which affects approximately 15% of sexually active couples. One of the factors influencing the fertility is melatonin. Also, protection of oocytes and embryos from oxidative stress inducing chemicals in the culture medium is important. The aim of the present study was to investigate if melatonin could regulate hyaluronan synthase-2 (HAS2) and Progesterone receptor (PGR) expressions in the cumulus cells of mice oocytes and provide an in vitro fertilization (IVF) approach...
April 2018: Cell Journal
https://www.readbyqxmd.com/read/29307701/toxicological-effects-of-regulated-mycotoxins-and-persistent-organochloride-pesticides-in-vitro-cytotoxic-assessment-of-single-and-defined-mixtures-on-ma-10-murine-leydig-cell-line
#18
Ukpai A Eze, John Huntriss, Michael N Routledge, Yun Yun Gong
Epidemiological studies show that there is global decline in male fertility primarily as a result of poor sperm quality and this is attributed to exposure to endocrine disrupting chemicals (EDCs) in the environment, food and pharmaceutical products, including mycotoxins and pesticides. The Leydig cells in the male testes are responsible for producing androgens, hormones that play major roles in male development and reproductive function. Therefore, any toxin that affects the function and morphology of the Leydig cells may result in sub-fertility or infertility...
January 4, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29307404/male-infertility-a-biomarker-of-individual-and-familial-cancer-risk
#19
REVIEW
Brent M Hanson, Michael L Eisenberg, James M Hotaling
Associations between male infertility and cancer are gaining clinical attention. Relationships between infertility and cancer have traditionally been studied in women, but recent work has focused on the male component of reproduction. Infertile men are at an elevated risk to develop various malignancies later in life, primarily genitourinary malignancies such as testicular and prostate cancer. Rates of testicular and high-grade prostate cancer in infertile men appear to be at least double the risk in the general population...
January 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29307396/epigenetics-infertility-and-cancer-future-directions
#20
REVIEW
Emma James, Timothy G Jenkins
Although direct correlates between cancer and infertile epigenetic profiles are rare, the general similarities between the two disease processes offer insights into the study of both abnormalities. Foremost among them is the nature of these pathologies, where one disease (cancer) is categorized by an inability to control or inhibit cellular proliferation, and the other (male infertility) is caused by an inability to maintain the normally efficient extreme proliferation of the male germ cell. Based on this similarity alone, the study of epigenetics in both male fertility and cancer has the potential to offer intriguing insights in both fields...
January 2018: Fertility and Sterility
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