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Unexplained infertility

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https://www.readbyqxmd.com/read/28330469/preclinical-evaluation-of-a-tex101-protein-elisa-test-for-the-differential-diagnosis-of-male-infertility
#1
Dimitrios Korbakis, Christina Schiza, Davor Brinc, Antoninus Soosaipillai, Theano D Karakosta, Christine Légaré, Robert Sullivan, Brendan Mullen, Keith Jarvi, Eleftherios P Diamandis, Andrei P Drabovich
BACKGROUND: TEX101 is a cell membrane protein exclusively expressed by testicular germ cells and shed into seminal plasma. We previously verified human TEX101 as a biomarker for the differential diagnosis of azoospermia, and developed a first-of-its-kind TEX101 ELISA. To demonstrate the clinical utility of TEX101, in this work we aimed at evaluating ELISA performance in a large population of fertile, subfertile, and infertile men. METHODS: Mass spectrometry, size-exclusion chromatography, ultracentrifugation, and immunohistochemistry were used to characterize TEX101 protein as an analyte in seminal plasma...
March 23, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28280854/deficiency-in-sperm-egg-protein-interaction-as-a-major-cause-of-fertilization-failure
#2
REVIEW
Soudabeh Sabetian, Mohd Shahir Shamsir
Complete elucidation of fertilization process at molecular level is one of the unresolved challenges in sexual reproduction studies, and understanding the molecular mechanism is crucial in overcoming difficulties in infertility and unsuccessful in vitro fertilization. Sperm-oocyte interaction is one of the most remarkable events in fertilization process, and deficiency in protein-protein interactions which mediate this interaction is a major cause of unexplained infertility. Due to detection of how the various defects of sperm-oocyte interaction can affect fertilization failure, different experimental methods have been applied...
March 9, 2017: Journal of Membrane Biology
https://www.readbyqxmd.com/read/28280801/a-large-uterine-leiomyoma-leading-to-non-puerperal-uterine-inversion-a-case-report
#3
Batool Teimoori, Arezoo Esmailzadeh
BACKGROUND: Although leiomyomas are the most common gynecologic disorders, non-puerperal uterine inversion due to leiomyoma is considered as a rare clinical problem. This condition can occur as a complication of a large sub-mucous leiomyoma that leads to dilate cervix and protrude into vagina. The patient may have several symptoms such as heavy vaginal bleeding, pelvic pain and intermittent acute urinary retention. CASE: We presented a 32-year-old nulliparous woman with 17 years of unexplained infertility and diagnosis of a large vaginal prolapsed non-pedunculated leiomyoma...
January 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28280798/endometrial-expression-of-%C3%AE-3-integrin-calcitonin-and-plexin-b1-in-the-window-of-implantation-in-women-with-unexplained-infertility
#4
Mehran Dorostghoal, Hamid-O-Allah Ghaffari, Nahid Shahbazian, Maryam Mirani
BACKGROUND: Endometrial receptivity plays a key role in the establishment of successful implantation and its impairment may contribute to subfertility and limit the assisted reproduction techniques (ART) success. OBJECTIVE: The aim of present study was to investigate endometrial receptivity in terms of β3 integrin, calcitonin and plexin-B1 expression in women with unexplained infertility. MATERIALS AND METHODS: We evaluated expression of β3 integrin, calcitonin and plexin-B1 through mRNA level measurement with real-time RT-PCR, in the endometrium of 16 infertile women with unexplained infertility and 10 fertile women...
January 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28266237/frozen-embryo-transfer-cycles-in-women-with-deep-endometriosis
#5
George Queiroz Vaz, Alessandra Viviane Evangelista, Maria Cecilia Almeida Cardoso, Paulo Gallo, Maria Cecilia Erthal, Marco Aurelio Pinho Oliveira
OBJECTIVE: To compare the transfer pregnancy rates with frozen embryos from patients with deep endometriosis and non-endometriosis patients. METHODS: We conducted a retrospective cohort study of review of medical records of 181 women aged 18-40 years, undergoing transfer of frozen embryos into a fertility center. The data collected was from January 2007 to December 2013. RESULTS: Regarding the patients with endometriosis, there was no statistical difference in proportion to compare polycystic ovarian syndrome, male factor, tubal factor and unexplained infertility...
March 7, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28265850/a-general-description-for-chinese-medicine-in-treating-premature-ovarian-failure
#6
Jing Lin, Xue-Lian Li, Hui Song, Qian Li, Ming-Yan Wang, Xue-Min Qiu, Da-Jin Li, Ling Wang
Premature ovarian failure (POF) is a kind of gynecological disease that causes amenorrhea, infertility, menopause and urogenital symptoms. Currently hormone replacement therapy (HRT) is the most popular choice for women with POF to get rid of menopausal syndrome. However, as the popularization of Chinese herbs made Chinese medicine (CM) shine new lights, physicians are able to treat POF with both meno-herbs and integrated therapy. HRT has its own indications and contraindications. For example, unexplained vaginal bleeding, acute liver damage, liver dysfunction, vascular embolization, and breast cancer are all contraindications of HRT, and CM is taken by more physicians as an adjuvant therapy...
February 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28259137/chronic-endometritis-modifies-decidualization-in-human-endometrial-stromal-cells
#7
Di Wu, Fuminori Kimura, Luyi Zheng, Mitsuaki Ishida, Yoko Niwa, Kimiko Hirata, Akie Takebayashi, Akiko Takashima, Kentaro Takahashi, Ryoji Kushima, Guangmei Zhang, Takashi Murakami
BACKGROUND: Chronic endometritis (CE) is a continuous inflammation of uterine endometrium, and it is usually symptomless. As CE has been thought not to affect the reproductive status and general health of affected women, its significance has not been explored. However, recent studies have shown that CE is related with repeated implantation failures after in vitro fertilization-embryo transfer, unexplained infertility, and recurrent miscarriages. As decidua differentiates to support the implantation process and maintains the pregnancy, we hypothesized that CE may influence the process of decidualization...
March 4, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28251025/the-relations-between-hsg-proven-tubal-occlusion-stimulated-intrauterine-insemination-and-pregnancy-rate
#8
Gonca Yetkin Yıldırım, Ahu Orta Korkut, Nadiye Köroğlu, Lale Susan Türkgeldi
BACKGROUND: Tubal factor infertility is one of the main causes of female infertility. Although its sensitivity is low, hysterosalpingography (HSG) is remains the first-line method for evaluating tubal patency. AIMS: To compare pregnancy rates in patients with HSG proven proximal or distal unilateral tubal occlusion, and unexplained infertility undergoing both controlled ovarian stimulation (COS) and intrauterine insemination (IUI). STUDY DESIGN: Case control study...
January 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28239559/gene-profiling-the-window-of-implantation-microarray-analyses-from-human-and-rodent-models
#9
Jennifer L Herington, Yan Guo, Jeff Reese, Bibhash C Paria
Poor uterine receptivity leads to implantation defects or failure. Identification of uterine molecules crucial to uterine receptivity and/or embryo implantation provides the opportunity to design a diagnostic screening toolkit for uterine receptivity or targeted drug discovery for treating implantation-based infertility. In this regard, gene-profiling studies performed in humans and rodents have identified numerous genes involved in the transcriptional regulation of uterine receptivity and embryo implantation...
December 2016: J Reprod Health Med
https://www.readbyqxmd.com/read/28165461/structure-of-the-homodimeric-androgen-receptor-ligand-binding-domain
#10
Marta Nadal, Stefan Prekovic, Nerea Gallastegui, Christine Helsen, Montserrat Abella, Karolina Zielinska, Marina Gay, Marta Vilaseca, Marta Taulès, Adriaan B Houtsmuller, Martin E van Royen, Frank Claessens, Pablo Fuentes-Prior, Eva Estébanez-Perpiñá
The androgen receptor (AR) plays a crucial role in normal physiology, development and metabolism as well as in the aetiology and treatment of diverse pathologies such as androgen insensitivity syndromes (AIS), male infertility and prostate cancer (PCa). Here we show that dimerization of AR ligand-binding domain (LBD) is induced by receptor agonists but not by antagonists. The 2.15-Å crystal structure of homodimeric, agonist- and coactivator peptide-bound AR-LBD unveils a 1,000-Å(2) large dimerization surface, which harbours over 40 previously unexplained AIS- and PCa-associated point mutations...
February 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28160506/evaluation-of-the-effect-of-indomethacin-and-piroxicam-administration-before-embryo-transfer-on-pregnancy-rate
#11
Serkan Kumbasar, Özer Gül, Aytek Şık
AIM: The aim of this study was to evaluate the effect of non-steroidal anti-inflammatory drug (NSAID) administration before embryo transfer (ET) on pregnancy rates in women undergoing in vitro fertilization/intracytoplasmic sperm injection ET. METHODS: Our study included 255 patients diagnosed with primary or secondary infertility caused by a male or tubal-related factor, endometriosis or unexplained factors. The patients were divided randomly into three groups...
March 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28135285/dysregulation-of-in-vitro-decidualization-of-human-endometrial-stromal-cells-by-insulin-via-transcriptional-inhibition-of-forkhead-box-protein-o1
#12
Dorina Ujvari, Ivika Jakson, Shabnam Babayeva, Daniel Salamon, Bence Rethi, Sebastian Gidlöf, Angelica Lindén Hirschberg
Insulin resistance and compensatory hyperinsulinemia are characteristic features of obesity and polycystic ovary syndrome, and both are associated with reduced fertility and implantation. There is little knowledge about the effect of insulin on the decidualization process and previous findings are contradictory. We investigated the effect of insulin on the regulation of forkhead box protein O1 (FOXO1), one of the most important transcription factors during decidualization. Endometrial stromal cells were isolated from six healthy, regularly menstruating women and decidualized in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28118836/the-impact-of-endometriosis-on-the-outcome-of-assisted-reproductive-technology
#13
Mireia González-Comadran, Juan Enrique Schwarze, Fernando Zegers-Hochschild, Maria do Carmo B Souza, Ramon Carreras, Miguel Ángel Checa
BACKGROUND: Endometriosis has been described to impair fertility through various mechanisms. However, studies evaluating the reproductive outcomes of women undergoing assisted reproductive technologies show controversial results. The aim of this study is to assess whether the reproductive outcome is impaired among women with endometriosis-associated infertility undergoing IVF. METHODS: A retrospective cohort study was performed, including women undergoing IVF reported by the Red Latinoamericana de Reproduccion Asistida (Redlara) registry, between January 2010 and December 2012...
January 24, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28114395/assisted-reproductive-technology-and-newborn-size-in-singletons-resulting-from-fresh-and-cryopreserved-embryos-transfer
#14
Galit Levi Dunietz, Claudia Holzman, Yujia Zhang, Nicole M Talge, Chenxi Li, David Todem, Sheree L Boulet, Patricia McKane, Dmitry M Kissin, Glenn Copeland, Dana Bernson, Michael P Diamond
OBJECTIVES AND STUDY DESIGN: The aim of this study was two-fold: to investigate the association of Assisted Reproductive Technology (ART) and small newborn size, using standardized measures; and to examine within strata of fresh and cryopreserved embryos transfer, whether this association is influenced by parental infertility diagnoses. We used a population-based retrospective cohort from Michigan (2000-2009), Florida and Massachusetts (2000-2010). Our sample included 28,946 ART singletons conceived with non-donor oocytes and 4,263,846 non-ART singletons...
2017: PloS One
https://www.readbyqxmd.com/read/28112003/predictors-of-twin-pregnancy-after-ovarian-stimulation-and-intrauterine-insemination-in-women-with-unexplained-infertility
#15
Arie Berkovitz, Tal Biron-Shental, Yael Pasternak, Reuven Sharony, Anat Hershko-Klement, Amir Wiser
Multi-foetal gestation is a well-known, adverse outcome of infertility treatment. Maternal and obstetrical complications are more frequent in multiple pregnancies compared to singletons. The aim of this study was to determine parameters that affect the risk for multiple pregnancies after ovarian stimulation (OS) with intrauterine insemination (IUI). We retrospectively evaluated all cases of OS with IUI cycles that ended with successful clinical pregnancy. A total of 259 pregnancies were analysed (175 singletons, 63 twins and 21 triplets)...
January 22, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28089975/in-vitro-fertilization-in-37-women-with-systemic-lupus-erythematosus-or-antiphospholipid-syndrome-a-series-of-97-procedures
#16
Pauline Orquevaux, Agathe Masseau, Véronique Le Guern, Vanessa Gayet, Danièle Vauthier, Gaelle Guettrot-Imbert, Du Le Thi Huong, Bertrand Wechsler, Nathalie Morel, Patrice Cacoub, Jean-Loup Pennaforte, Jean-Charles Piette, Nathalie Costedoat-Chalumeau
OBJECTIVE: To compile and assess data about complication and success rates for in vitro fertilization (IVF) of women with systemic lupus erythematosus (SLE) and/or antiphospholipid syndrome (APS). To date, such data are sparse. METHODS: This retrospective study described women with SLE and/or APS who have had at least 1 IVF cycle. RESULTS: Thirty-seven women with SLE (n = 23, including 8 with antiphospholipid antibodies), SLE with APS (n = 4), or primary APS (n = 10) underwent 97 IVF procedures...
January 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28089575/association-of-uterine-fibroids-and-pregnancy-outcomes-after-ovarian-stimulation-intrauterine-insemination-for-unexplained-infertility
#17
Aaron K Styer, Susan Jin, Dan Liu, Baisong Wang, Alex J Polotsky, Mindy S Christianson, Wendy Vitek, Lawrence Engmann, Karl Hansen, Robert Wild, Richard S Legro, Christos Coutifaris, Ruben Alvero, Randal D Robinson, Peter Casson, Gregory M Christman, Alicia Christy, Michael P Diamond, Esther Eisenberg, Heping Zhang, Nanette Santoro
OBJECTIVE: To investigate the association of non-cavity-distorting uterine fibroids and pregnancy outcomes after ovarian stimulation-intrauterine insemination (OS-IUI) in couples with unexplained infertility. DESIGN: Secondary analysis from a prospective, randomized, multicenter clinical trial investigating fertility outcomes after OS-IUI. SETTING: Reproductive Medicine Network clinical sites. PATIENT(S): Nine hundred couples with unexplained infertility who participated in the Assessment of Multiple Intrauterine Gestations from Ovarian Stimulation (AMIGOS) clinical trial...
March 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28029395/the-current-situation-of-infertility-services-provision-in-europe
#18
REVIEW
Ioannis E Messinis, Christina I Messini, Alexandros Daponte, Antonios Garas, Tahir Mahmood
Infertility is a global medical problem of the reproductive system which may affect the quality of a woman's life. Whether infertility provision varies between different European countries has not been investigated in the context of a comparative study. There are, however, differences in legislation between different countries, which encourage "infertility tourism". Women cross borders in order to get access to those treatment modalities that are not provided in their own country. Oocyte donation for example and the high cost of the services locally are common reasons for this mobility...
October 20, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28006017/mitochondrial-biomarkers-reflect-semen-quality-results-from-the-marchs-study-in-chongqing-china
#19
Guowei Zhang, Zhi Wang, Xi Ling, Peng Zou, Huan Yang, Qing Chen, Niya Zhou, Lei Sun, Jianfang Gao, Ziyuan Zhou, Jia Cao, Lin Ao
Unexplained infertility requires that more sensitive and mechanism-based biomarkers should be developed and used independently of or in addition to conventional semen parameters for an infertility diagnosis. In the present study, semen samples were collected from young men participating in the Male Reproductive Health in Chongqing College students (MARCHS) cohort study in the follow-up stage in 2014. Conventional semen parameters were measured in all 656 participants, whereas sperm mitochondrial membrane potential (MMP), mitochondrial DNA copy number (mtDNAcn), mtDNA integrity and apoptotic parameters were measured among 627, 386, 362, and 628 participants, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/28003521/micropyle-number-is-associated-with-elevated-female-promiscuity-in-lepidoptera
#20
Graziella Iossa, Matthew J G Gage, Paul E Eady
In the majority of insects, sperm fertilize the egg via a narrow canal through the outer chorion called the micropyle. Despite having this one primary function, there is considerable unexplained variation in the location, arrangement and number of micropyles within and between species. Here, we examined the relationship between micropyle number and female mating pattern through a comparative analysis across Lepidoptera. Three functional hypotheses could explain profound micropylar variation: (i) increasing micropyle number reduces the risk of infertility through sperm limitation in species that mate infrequently; (ii) decreasing micropyle number reduces the risk of pathological polyspermy in species that mate more frequently; and (iii) increasing micropyle number allows females to exert greater control over fertilization within the context of post-copulatory sexual selection, which will be more intense in promiscuous species...
December 2016: Biology Letters
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