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https://www.readbyqxmd.com/read/28222406/leydig-cell-clustering-and-reinke-crystal-distribution-in-relation-to-hormonal-function-in-adult-patients-with-testicular-dysgenesis-syndrome-tds-including-cryptorchidism
#1
Rikke R Soerensen, Trine H Johannsen, Niels E Skakkebaek, Ewa Rajpert-De Meyts
OBJECTIVE: Testicular dysgenesis syndrome (TDS) comprises testicular germ cell cancer, cryptorchidism and some cases of male infertility and hypospadias, which can be linked to impairment of intrauterine gonadal development. Among histological signs of TDS, large Leydig cell (LC) clusters (micronodules) are frequently present. This study aimed to investigate possible associations of LC micronodules with the presence of Reinke crystals and hormonal function of LCs, the latter primarily reflected by serum concentrations of luteinising hormone (LH) and testosterone, in patients with TDS...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28221188/treatment-of-cervical-intraepithelial-neoplasia-patients-preferences-for-surgery-or-immunotherapy-with-imiquimod
#2
Margot M Koeneman, Brigitte A Essers, Cornelis G Gerestein, Anna J M van de Sande, Rogier J N T M Litjens, Dieuwke Boskamp, Medi F J Goossens, Heleen J Beekhuizen, Roy F P M Kruitwagen, Arnold J Kruse, Carmen D Dirksen
OBJECTIVE: Imiquimod has been studied as a noninvasive pharmacological treatment alternative to large loop excision of the transformation zone (LLETZ) for high-grade cervical intraepithelial neoplasia (CIN), to prevent long-term obstetric complications from surgical treatment. This study aims to investigate womens' preferences for treatment of high-grade CIN with imiquimod or LLETZ. METHODS: A labeled discrete choice experiment was conducted among 100 women with abnormal cervical cytology in 5 hospitals in the Netherlands between March 2014 and December 2015...
February 17, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28218625/egress-of-sperm-autoantigen-from-seminiferous-tubules-maintains-systemic-tolerance
#3
Kenneth S K Tung, Jessica Harakal, Hui Qiao, Claudia Rival, Jonathan C H Li, Alberta G A Paul, Karen Wheeler, Patcharin Pramoonjago, Constance M Grafer, Wei Sun, Robert D Sampson, Elissa W P Wong, Prabhakara P Reddi, Umesh S Deshmukh, Daniel M Hardy, Huanghui Tang, C Yan Cheng, Erwin Goldberg
Autoimmune responses to meiotic germ cell antigens (MGCA) that are expressed on sperm and testis occur in human infertility and after vasectomy. Many MGCA are also expressed as cancer/testis antigens (CTA) in human cancers, but the tolerance status of MGCA has not been investigated. MGCA are considered to be uniformly immunogenic and nontolerogenic, and the prevailing view posits that MGCA are sequestered behind the Sertoli cell barrier in seminiferous tubules. Here, we have shown that only some murine MGCA are sequestered...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28218624/loss-of-microrna-7a2-induces-hypogonadotropic-hypogonadism-and-infertility
#4
Kashan Ahmed, Mary P LaPierre, Emanuel Gasser, Rémy Denzler, Yinjie Yang, Thomas Rülicke, Jukka Kero, Mathieu Latreille, Markus Stoffel
MicroRNAs (miRNAs) are negative modulators of gene expression that fine-tune numerous biological processes. miRNA loss-of-function rarely results in highly penetrant phenotypes, but rather, influences cellular responses to physiologic and pathophysiologic stresses. Here, we have reported that a single member of the evolutionarily conserved miR-7 family, miR-7a2, is essential for normal pituitary development and hypothalamic-pituitary-gonadal (HPG) function in adulthood. Genetic deletion of mir-7a2 causes infertility, with low levels of gonadotropic and sex steroid hormones, small testes or ovaries, impaired spermatogenesis, and lack of ovulation in male and female mice, respectively...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28218621/microrna-7a2-suppression-causes-hypogonadotropism-and-uncovers-signaling-pathways-in-gonadotropes
#5
William F Crowley, Ravi Balasubramanian
MicroRNAs (miRNAs) have emerged as important regulators of a variety of biological processes and pathways. In this issue of the JCI, Ahmed et al. reveal that miR-7a2 is a critical regulator of sexual maturation and reproductive function, as mice lacking miR-7a2 develop hypogonadotropic hypogonadism and infertility. Using a bioinformatics approach, the authors identified several miR-7a2 target genes and pathways that have not been previously associated with gonadotropin biosynthesis and/or secretion. Together, these results identify miR-7a2-regulated genes involved in reproductive hormone biosynthesis pathways and provide a framework for future studies aimed at understanding rare reproductive conditions...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28218307/effects-of-u0126-and-mk2206-on-cell-growth-and-re-growth-of-endometriotic-stromal-cells-grown-on-substrates-of-varying-stiffness
#6
Sachiko Matsuzaki, Jean-Luc Pouly, Michel Canis
Endometriosis is a common gynecological disorder responsible for infertility and pelvic pain. A complete cure for patients with endometriosis awaits new targets and strategies. Here we show that U0126 (a MEK inhibitor) and MK2206 (an AKT inhibitor) synergistically inhibit cell growth of deep endometriotic stromal cells (DES) grown on polyacrylamide gel substrates (PGS) of varying stiffness (2 or 30 kilopascal [kPa]) or plastic in vitro. No significant differences in cell proliferation were observed among DES, endometrial stromal cells of patients with endometriosis (EES) from the proliferative phase (P), EES-S (secretory phase) and EES-M (menstrual phase) compared to cells grown on a substrate of the same stiffness at both higher (U0126 [30 μM] and MK2206 [9 μM]) and lower (U0126 [15 μM] and MK2206 [4...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28217965/copy-number-variations-in-testicular-maturation-arrest
#7
A Halder, P Kumar, M Jain, V K Iyer
Testicular maturation arrest is characterized by interruption of germ cell development and differentiation. Genetic factors play important role in the causation of human disease, including male infertility. The objective was to study copy number variations in testicular maturation arrest using single nucleotide polymorphism (SNP) microarray technique. Conventional cytogenetics, targeted fluorescence in situ hybridization (FISH) and sequence-tagged site (STS) polymerase chain reaction (PCR) were used to confirm some of the SNP microarray findings...
February 19, 2017: Andrology
https://www.readbyqxmd.com/read/28217555/comparison-of-murine-cervicovaginal-infection-by-chlamydial-strains-identification-of-extrusions-shed-in-vivo
#8
Jennifer H Shaw, Amanda R Behar, Timothy A Snider, Noah A Allen, Erika I Lutter
Chlamydia trachomatis is the leading cause of bacterial sexually transmitted infections (STIs) and preventable blindness. Untreated, asymptomatic infection as well as frequent re-infection are common and may drive pelvic inflammatory disease, ectopic pregnancy, and infertility. In vivo models of chlamydial infection continue to be instrumental in progress toward a vaccine and further elucidating the pathogenesis of this intracellular bacterium, however significant gaps in our understanding remain. Chlamydial host cell exit occurs via two mechanisms, lysis and extrusion, although the latter has yet to be reported in vivo and its biological role is unclear...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28216936/seminoma-of-undescended-testis-with-urinary-bladder-metastasis-a-case-report-with-review-of-literature
#9
Syed Althaf, Kiran Shankar, Vishnu Kurpad, M N Suma
Cryptorchidism is the most common predisposing factor in the development of testicular germ cell tumors. Seminoma is the most common malignancy developing in a cryptorchid testis, usually has lymphatic but rarely hematogenous metastasis. The Urinary Bladder is an extremely rare site of metastasis of seminoma metastasis. A 29-year-old male patient presented to us with a history of infertility and an intra-abdominal mass. He was investigated and treated and was found to have an intra-abdominal seminoma with synchronous urinary bladder metastasis...
January 2017: Urology Annals
https://www.readbyqxmd.com/read/28216918/spontaneous-conception-in-40-year-old-infertile-woman-with-polycystic-ovaries-after-complete-reversal-of-endometrial-intraepithelial-neoplasia-a-case-report-with-review-of-literature
#10
Swati Verma, Umesh N Jindal
We report a case of polycystic ovary syndrome and prolonged infertility in which endometrial intraepithelial neoplasia was reversed with high dose progesterone therapy. Spontaneous conception after failure of assisted reproductive techniques highlights the role of endometrial receptivity.
October 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28216910/effectiveness-of-paracervical-block-for-pain-relief-in-women-undergoing-hysterosalpingography
#11
Shikha Jain, Dattaprasad B Inamdar, Abha Majumdar, Deepak K Jain
OBJECTIVES: To evaluate the potential benefit, in terms of pain relief, of the paracervical block with 2% lignocaine in women undergoing hysterosalpingography (HSG). STUDY DESIGN: This study was a prospective randomized controlled study. SETTINGS: This study was conducted in infertility clinic of a tertiary care center. MATERIALS AND METHODS: Four hundred and six patients undergoing HSG as a part of infertility evaluation were included in the study...
October 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28216909/aneuploidy-screening-by-array-comparative-genomic-hybridization-improves-success-rates-of-in-vitro-fertilization-a-multicenter-indian-study
#12
Aditi Kotdawala, Deven Patel, Javier Herrero, Rajni Khajuria, Nalini Mahajan, Manish Banker
OBJECTIVE: To evaluate the usefulness of preimplantation genetic screening (PGS) using array comparative genomic hybridization (aCGH) in the Indian population. MATERIALS AND METHODS: This is a retrospective, multicenter study including 235 PGS cycles following intracytoplasmic sperm injection performed at six different infertility centers from September 2013 to June 2015. Patients were divided as per maternal age in several groups (<35, 35-36, 37-38, 39-40, and >40 years) and as per indication for undergoing PGS...
October 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28216457/endometriosis-in-hydatid-cysts-of-morgagni-a-retrospective-cohort-study-of-another-atypical-manifestation-of-endometriosis
#13
Shweta Gupta, Jeffrey A Gavard, Elena Kraus, Patrick Yeung
OBJECTIVE: To report on the presence and rate of endometriosis in hydatid cysts of Morgagni found at the time of excision surgery for endometriosis, and to describe any association of endometriosis in hydatid cysts of Morgagni to preoperative or operative factors. DESIGN: Retrospective cohort study DESIGN: Classification: Canadian Task Force Classification Level II-2 evidence SETTING: Center for Endometriosis at Saint Louis University, a tertiary referral center for endometriosis PATIENTS: Women who underwent optimal excision surgery for suspected endometriosis due to chronic pelvic pain and/or infertility and who also had hydatid cysts of Morgagni removed at the time of surgery, when found...
February 16, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28215679/causes-of-declining-fertility-in-dairy-cows-during-the-warm-season
#14
REVIEW
F De Rensis, F Lopez-Gatius, I García-Ispierto, G Morini, R J Scaramuzzi
In the Northern Hemisphere, from June to September and in the Southern Hemisphere from December to March, there are periods of reduced fertility (sub-fertility) in dairy cows that are described as summer infertility. Several factors contribute to sub-fertility during this time, such as ambient temperature, humidity and photoperiod. During the warm season there is a reduction in feed intake that may compromise the energy balance of the cow and/or induce an imbalance in the activity of the hypothalamo-hypophyseal-ovarian axis...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28214572/clinical-relevance-of-oxidation-reduction-potential-in-the-evaluation-of-male-infertility
#15
Ashok Agarwal, Siew May Wang
Objectives To evaluate 1) the relationship between oxidation-reduction potential (ORP) and abnormal sperm quality, 2) changes in ORP and sperm parameters over time, in search of a potential surrogate marker of poor sperm quality that may assist in the diagnosis of oxidative stress- related male infertility. Methods 194 infertile men were included and 28 patients were identified to have repeated semen analyses and ORP measurements. The semen samples obtained were categorized into normal and abnormal sperm parameters based on the World Health Organization (WHO) 5(th) edition guidelines...
February 15, 2017: Urology
https://www.readbyqxmd.com/read/28213128/quantitative-proteomic-analysis-of-human-testis-reveals-system-wide-molecular-and-cellular-pathways-associated-with-non-obstructive-azoospermia
#16
Mehdi Alikhani, Mehdi Mirzaei, Marjan Sabbaghian, Pouria Parsamatin, Razieh Karamzadeh, Samane Adib, Niloofar Sodeifi, Mohammad Ali Sadighi Gilani, Masoud Zabet-Moghaddam, Lindsay Parker, Yunqi Wo, Vivek Gupta, Paul A Haynes, Hamid Gourabi, Hossein Baharvand, Ghasem Hosseini Salekdeh
: Male infertility accounts for half of the infertility problems experienced by couples. Azoospermia, having no measurable level of sperm in seminal fluid, is one of the known conditions resulting in male infertility. In order to elucidate the complex molecular mechanisms causing male azoospermia, label-free quantitative shotgun proteomics was carried out on testicular tissue specimens from patients with obstructive azoospermia and non-obstructive azoospermia, including maturation arrest (MA) and Sertoli cell only syndrome (SCOS)...
February 14, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28212593/micrornas-and-endometriosis-distinguishing-drivers-from-passengers-in-disease-pathogenesis
#17
Warren B Nothnick
Endometriosis is a disease common in women of reproductive age, characterized by pelvic pain and infertility. Despite its prevalence, the factors and mechanisms which contribute to the development and survival of ectopic lesions remain uncertain. MicroRNAs (miRNAs) are small RNA molecules that regulate posttranscriptional gene regulation which have been proposed to contribute to the pathogenesis of many diseases including that of endometriosis. This review summarizes the results of initial studies describing differentially expressed miRNAs between endometriotic lesion tissue and eutopic endometrium...
February 17, 2017: Seminars in Reproductive Medicine
https://www.readbyqxmd.com/read/28212592/novel-insights-into-gonadotropin-releasing-hormone-action-in-the-pituitary-gonadotrope
#18
Jessica L Brown, Mark Roberson
The hypothalamic-pituitary-gonadal axis controls reproduction via a series of hormones regulating gonadal function through interconnected feedback loops. Secretion of hypothalamic-derived gonadotropin-releasing hormone (GnRH) integrates inputs from higher brain centers to coordinate the activity of the pituitary gonadotrope and the biosynthesis and secretion of the gonadotropins which ultimately regulate gonadal function. Failure of GnRH to serve as the central integrator of this system has been associated with hypogonadotropic-hypogonadism and clinical infertility, while pharmacological application of GnRH analogs and gonadotropins have important implications of the treatment of such infertility...
February 17, 2017: Seminars in Reproductive Medicine
https://www.readbyqxmd.com/read/28212475/-frequency-of-increased-thyrotropin-in-women-with-hyperprolactinemia
#19
Sebastián Carranza-Lira, María Luisa Daza-Carrasco, Rosario Chán-Verdugo
BACKGROUND: Hypothyroidism has been associated to hyperprolactinemia. The aim was to establish the frequency of high thyrotropin (TSH) levels in women with hyperprolactinemia. METHODS: Retrospective, observational, open, and non-controlled study, which included all the non-pregnant women whose prolactin (PRL) and TSH levels were measured between January 1 and December 31, 2014. RESULTS: 437 women were studied. The most frequent diagnoses that motivated PRL measurement were: infertility (31...
2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28212156/impact-of-very-low-anti-m%C3%A3-llerian-hormone-on-pregnancy-success
#20
Alberto Pacheco, María Cruz, Juan A García-Velasco
PURPOSE OF REVIEW: Biomarkers are useful tool to help clinicians to estimate the chances of pregnancy of an infertile couple prior to assisted reproductive treatment. One proposed candidate is anti-Müllerian hormone (AMH), but its role as a predictor of reproductive success, especially in patients with low or very low levels, is under discussion. This review highlights recent findings from literature regarding to reproductive outcome in women with very low levels of AMH. RECENT FINDINGS: Although there is a general agreement about the lower pregnancy rates of patients with very low levels of AMH compared with patients with normal AMH levels, the role of AMH as a predictor of success is still under discussion...
February 15, 2017: Current Opinion in Obstetrics & Gynecology
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