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https://www.readbyqxmd.com/read/28934280/recurrent-deletions-of-the-x-chromosome-linked-cnv64-cnv67-and-cnv69-shows-geographic-differences-across-china-and-no-association-with-idiopathic-infertility-in-men
#1
Xiulan Ma, Martin Kuete, Xiuli Gu, Hui Zhou, Chengliang Xiong, Honggang Li
A recent study found that three recurrent deletions of X chromosome linked copy number variations (CNVs), CNV64, CNV67 and CNV69 were associated with idiopathic male infertility in Spanish and Italian populations, especially CNV67 resembling the azoospermia factor deletions. That merits further investigations among different populations. This study was conducted to examine the prevalence of the three CNVs deletions and their associations with idiopathic male infertility in Chinese Han population. The present study included a large population of 1550 Chinese Han subjects recruited between 2014 and 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28888863/increased-insulin-resistance-in-men-with-unexplained-infertility
#2
Ragaa Mansour, Yahia El-Faissal, Ahmed Kamel, Omnia Kamal, Gamal Aboulserour, Mohamed Aboulghar, Ibrahim Fahmy
This prospective case-control study aimed to test the presence of insulin resistance (IR) in men with unexplained infertility. We included two groups: the study group including 160 infertile men with unexplained oligozoospermia (sperm count <10 × 10(6)/ml) and normal hormonal profile, and the control group of 79 men with proven fertility within the preceding year. A fasting blood test measured IR, FSH, LH, total cholesterol, low-density lipoprotein, high-density lipoprotein and triglycerides. Insulin level was significantly higher in the study group (13...
August 24, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28801929/validation-and-application-of-a-novel-integrated-genetic-screening-method-to-a-cohort-of-1-112-men-with-idiopathic-azoospermia-or-severe-oligozoospermia
#3
Manon S Oud, Liliana Ramos, Moira K O'Bryan, Robert I McLachlan, Özlem Okutman, Stephane Viville, Petra F de Vries, Dominique F C M Smeets, Dorien Lugtenberg, Jayne Y Hehir-Kwa, Christian Gilissen, Maartje van de Vorst, Lisenka E L M Vissers, Alexander Hoischen, Aukje M Meijerink, Kathrin Fleischer, Joris A Veltman, Michiel J Noordam
Microdeletions of the Y chromosome (YCMs), Klinefelter syndrome (47,XXY), and CFTR mutations are known genetic causes of severe male infertility, but the majority of cases remain idiopathic. Here, we describe a novel method using single molecule Molecular Inversion Probes (smMIPs), to screen infertile men for mutations and copy number variations affecting known disease genes. We designed a set of 4,525 smMIPs targeting the coding regions of causal (n = 6) and candidate (n = 101) male infertility genes. After extensive validation, we screened 1,112 idiopathic infertile men with non-obstructive azoospermia or severe oligozoospermia...
August 11, 2017: Human Mutation
https://www.readbyqxmd.com/read/28764642/the-susceptibility-of-fshb-211g%C3%A2-%C3%A2-t-and-fshr-g-29a-919a%C3%A2-%C3%A2-g-2039a%C3%A2-%C3%A2-g-polymorphisms-to-men-infertility-an-association-study-and-meta-analysis
#4
Qiuyue Wu, Jing Zhang, Peiran Zhu, Weijun Jiang, Shuaimei Liu, Mengxia Ni, Mingchao Zhang, Weiwei Li, Qing Zhou, Yingxia Cui, Xinyi Xia
BACKGROUND: Male infertility is a complex disorder caused by genetic, developmental, endocrine, or environmental factors as well as unknown etiology. Polymorphisms in the follicle stimulating hormone beta subunit (FSHB) (rs10835638, c.-211G > T) and follicle stimulating hormone receptor (FSHR) (rs1394205, c.-29G > A; rs6165, c.919A > G; rs6166, c.2039 A > G) genes might disturb normal spermatogenesis and affect male reproductive ability. METHODS: To further ascertain the aforementioned effects, we conducted a case-control study of 255 infertile men and 340 fertile controls from South China using the Mass ARRAY method, which was analyzed by the t-tests and logistic regression analysis using SPSS for Windows 14...
August 1, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28762516/fluorescence-in-situ-hybridisation-sperm-examination-is-significantly-impaired-in-all-categories-of-male-infertility
#5
S Petousis, Y Prapas, A Papatheodorou, C Margioula-Siarkou, G Papatzikas, Y Panagiotidis, A Karkanaki, K Ravanos, N Prapas
To study the outcome of FISH sperm examination in cases with sperm pathology and outline the potential correlation with certain chromosomal defects. A retrospective study of prospectively collected data was performed in IAKENTRO, Infertility Treatment Center. Rates of abnormal FISH semen examination were compared between male infertility patients and fertile controls. Detection of abnormal FISH semen examination as well as each chromosomal abnormality detected was correlated with each sperm deficiency (asthenozoospermia, oligozoospermia and teratozoospermia) in a univariate regression model...
August 1, 2017: Andrologia
https://www.readbyqxmd.com/read/28746727/idiopathic-male-infertility-related-to-periodontal-and-caries-status
#6
Nándor Práger, Norbert Pásztor, Ákos Várnagy, Zoltan Kozinszky, Zoltán Baráth, István Gorzó, Márta Radnai
OBJECTIVES: This study was undertaken to evaluate the possible correlation between the periodontal and dental status and sperm pathology in idiopathic male infertility. METHODS: The periodontal and caries status and semen quality of 199 men presented with unexplained male infertility were examined. Periodontal and dental factors were analysed by sperm pathology categories. RESULTS: A total of 106 men had normal sperm parameters, whereas 93 men had some type of spermpathology; 27...
July 26, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28730893/multicenter-study-of-genetic-abnormalities-associated-with-severe-oligospermia-and-non-obstructive-azoospermia
#7
Chong Xie, Xiangfeng Chen, Yulin Liu, Zhengmu Wu, Ping Ping
Objective * Chong Xie, Xiangfeng Chen, and Yulin Liu contributed equally to this work. Genetic defects are identified in nearly 20% of infertile males. Determining the frequency and types of major genetic abnormalities in severe male infertility helps inform appropriate genetic counseling before assisted reproductive techniques. Methods Cytogenetic results of 912 patients with non-obstructive azoospermia (NOA) and severe oligozoospermia (SOS) in Eastern China were reviewed in this multicenter study from January 2011 to December 2015...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28718894/sperm-cryopreservation-and-assisted-reproductive-technology-outcome-in-patients-with-spinal-cord-injury
#8
A Reignier, J Lammers, C Splingart, D Redhead, J J Labat, S Mirallié, P Barrière, T Fréour
This study aimed to describe spinal cord injured patients' semen characteristics before and after cryopreservation, and assisted reproductive technology cycles outcome compared to the infertile population. Data about sperm analysis and assisted reproductive technology (ART) cycles outcomes for 78 men with spinal cord injury referred for sperm cryopreservation between 1998 and 2013 were retrospectively analysed and compared with a reference group consisting of every Intra Cytoplasmic Sperm Injection (ICSI) cycle performed in our in vitro fertilization unit over the 2009-2014 period...
July 18, 2017: Andrologia
https://www.readbyqxmd.com/read/28670432/relationship-between-chlamydia-ureaplasma-mycoplasma-genital-detection-with-semen-concentration-and-motility-among-greek-men
#9
Ageliki Gerovassili, Ourania Marcandona, Byron Asimakopoulos, Vasilis Karavasilis, Maria Panopoulou, Alexandros Ikonomidis
One hundred and seventy two men at the State of Thessaly, Greece, inquiring semen analysis were enrolled in the study in order to investigate the incidence of Chlamydia, Ureaplasma and Mycoplasma (C-U-M) genera in respect to total sperm number (TSN), progressive motility (grades a and b) and total motility (grades a, b and c). Putative relation of C-U-M acquirement with sexual behavior was also investigated. Incidence of C-U-M among non-oligozoospermic and oligozoospermic men was similar. Νο correlation of C-U-M carriage to either oligozoospermia or asthenozoospermia was found...
July 2017: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/28638871/effect-of-yishenjianpi-recipe-on-semen-quality-and-sperm-mitochondria-in-mice-with-oligoasthenozoospermia-induced-by-tripterygium-glycosides
#10
Wen Sheng, Yao-Sheng Zhang, Yue-Qing Li, Xiao-Ni Wu, Li-Min Chai, Li-Feng Yue, Juan-Liu, Jin Ding, Xian-Rui Li, Meng Chen, Jian-Wei Shang
BACKGROUND: Kidney tonifying - spleen strengthening method being one of the modalities for treatment of astheno-oligozoospermia is currently commonly used in the clinical setting. To investigate the mechanism of YiShenJianPi (YSJP) Recipe, used in Traditional Chinese Medicine to benefit "the kidney" and strengthen "the spleen". MATERIALS AND METHODS: Oligoasthenozoospermia, male BALB/c mice were randomly divided into normal control, disease model, positive control, low-dosage and high-dosage groups...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
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/28618741/routine-assessment-of-occupational-exposure-and-its-relation-to-semen-quality-in-infertile-men-a-cross-sectional-study
#12
Salima Daoud, Afifa Sellami, Mehdi Bouassida, Sahbi Kebaili, Leila Ammar Keskes, Tarek Rebai, Nozha Chakroun Feki
BACKGROUND/AIM: Concerns about the detrimental effects of occupational and environmental exposure on male reproductive function have been raised by reports of declining sperm quality over the last decades. The aim of this study was to investigate the association between altered semen parameters and exposure to occupational risk factors as assessed by questionnaire. MATERIALS AND METHODS: We conducted a cross-sectional questionnaire-based study among a population of 2122 men who underwent andrological investigation for couple infertility...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28611019/mechanisms-in-endocrinology-aberrations-of-the-x-chromosome-as-cause-of-male-infertility
#13
Albrecht Röpke, Frank Tüttelmann
Male infertility is most commonly caused by spermatogenetic failure, clinically noted as oligo- or azoospermia. Today, in approximately 20% of azoospermic patients, a causal genetic defect can be identified. The most frequent genetic causes of azoospermia (or severe oligozoospermia) are Klinefelter syndrome (47,XXY), structural chromosomal abnormalities and Y-chromosomal microdeletions. Consistently with Ohno's law, the human X chromosome is the most stable of all the chromosomes, but contrary to Ohno's law, the X chromosome is loaded with regions of acquired, rapidly evolving genes, which are of special interest because they are predominantly expressed in the testis...
June 13, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28597829/urogenital-infection-as-a-risk-factor-for-male-infertility
#14
Hans-Christian Schuppe, Adrian Pilatz, Hamid Hossain, Thorsten Diemer, Florian Wagenlehner, Wolfgang Weidner
BACKGROUND: Infections of the genital tract are considered common causes of male fertility disorders, with a prevalence of 6-10%. Most of the affected men are asymptomatic. The diagnostic evaluation is based mainly on laboratory testing. Inconsistent diagnostic criteria have been applied to date, and this may explain the controversial debate about the role of infection and inflammation in the genital tract as a cause of infertility. The risk of an irreversible fertility disorder should not be underestimated...
May 12, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28553232/integrated-analysis-of-dna-methylation-and-mrna-expression-profiles-to-identify-key-genes-in-severe-oligozoospermia
#15
Zhiming Li, Xuan Zhuang, Jinxiong Zeng, Chi-Meng Tzeng
Severe oligozoospermia (SO) is a complex disorder, whose etiology is the combined effect of genetic factors and epigenetic conditions. In this study, we examined DNA methylation and mRNA expression status in a set of testicular tissues of SO patients (n = 3), and compared methylated data with those derived from obstructive azoospermia (OA) patients (n = 3) with normal spermatogenesis phenotype. We identified 1,960 differentially methylated CpG sites showing significant alterations in SO vs. OA using the Illumina Infinium HumanMethylation450 bead array...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28521575/high-frequency-of-de-novo-daz-microdeletion-in-sperm-nuclei-of-subfertile-men-possible-involvement-of-genome-instability-in-idiopathic-male-infertility
#16
Hossein Mozdarani, Pegah Ghoraeian, Sohail Mozdarani, Parvin Fallahi, Anahita Mohseni-Meybodi
The occurrence and diagnosis of Y-chromosome microdeletions, specifically deletions of the DAZ (Deleted in Azoospermia) genes are an important issue in male infertility. Screening Y chromosome microdeletion is mainly done using polymerase chain reaction (PCR) on blood leukocytes. However, there is some evidence indicating that presence of DAZ in somatic cells might not be indicative of its presence in the germ cell lineage. Therefore, a total of 130 men with poor semen quality were examined for presence of DAZ microdeletion in their leukocytes...
May 19, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28510703/long-chain-fatty-acid-triglyceride-tg-metabolism-disorder-impairs-male-fertility-a-study-using-adipose-triglyceride-lipase-deficient-mice
#17
Hidetake Masaki, Namhyo Kim, Hitomi Nakamura, Keiichi Kumasawa, Eriko Kamata, Ken-Ichi Hirano, Tadashi Kimura
STUDY QUESTION: Does the deletion of adipose triglyceride lipase (Atgl) gene impair male fertility? SUMMARY ANSWER: The deletion of Atgl gene impaired male fertility but the effect was partially reversed by a low long-chain triglyceride (TG) diet. WHAT IS KNOWN ALREADY: ATGL specifically hydrolyses long-chain fatty acid TG to diacylglycerol and a high level of expression of ATGL in testes has been reported. However, the role of ATGL in male fertility is unknown...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28498920/copy-number-variation-of-functional-rbmy1-is-associated-with-sperm-motility-an-azoospermia-factor-linked-candidate-for-asthenozoospermia
#18
Yuanlong Yan, Xiling Yang, Yunqiang Liu, Ying Shen, Wenling Tu, Qiang Dong, Dong Yang, Yongyi Ma, Yuan Yang
STUDY QUESTION: What is the influence of copy number variation (CNV) in functional RNA binding motif protein Y-linked family 1 (RBMY1) on spermatogenic phenotypes? SUMMARY ANSWER: The RBMY1 functional copy dosage is positively correlated with sperm motility, and dosage insufficiency is an independent risk factor for asthenozoospermia. WHAT IS KNOWN ALREADY: RBMY1, a multi-copy gene expressed exclusively in the adult testis, is one of the most important candidates for male infertility in the azoospermia factor (AZF) region of the Y-chromosome...
May 12, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28456834/spermatogenic-failure-and-the-y-chromosome
#19
REVIEW
C Krausz, E Casamonti
The Y chromosome harbors a number of genes essential for testis development and function. Its highly repetitive structure predisposes this chromosome to deletion/duplication events and is responsible for Y-linked copy-number variations (CNVs) with clinical relevance. The AZF deletions remove genes with predicted spermatogenic function en block and are the most frequent known molecular causes of impaired spermatogenesis (5-10% of azoospermic and 2-5% of severe oligozoospermic men). Testing for this deletion has both diagnostic and prognostic value for testicular sperm retrieval in azoospermic men...
May 2017: Human Genetics
https://www.readbyqxmd.com/read/28456540/azoospermia-factor-a-microdeletions-occurrence-in-chinese-infertile-men-and-novel-deletions-revealed-by-semiconductor-sequencing
#20
Xiang-Yin Liu, Hong-Yang Zhang, Da-Xin Pang, Lin-Tao Xue, Xiao Yang, Yu-Shuai Li, Rui-Zhi Liu
OBJECTIVE: To evaluate the frequency of azoospermia factor (AZFa) microdeletions among infertile men and establish a new high-throughput sequencing method to detect novel deletion types. MATERIALS AND METHODS: A total of 3731 infertile men were included. Karyotype analysis was performed using G-band staining of peripheral blood lymphocytes. Polymerase chain reaction (PCR) amplification using specific sequence-tagged sites (STS) was performed to screen for AZF region microdeletions of the Y chromosome...
April 26, 2017: Urology
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