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molecular infertility

Jill A Hamilton, Joshua M Miller
Understanding the processes underlying speciation has long been a challenge to evolutionary biologists. This spurs from difficulties teasing apart the various mechanisms that contribute to the evolution of barriers to reproduction. The study by Rafati et al. () in this issue of Molecular Ecology combines spatially explicit whole-genome resequencing with evaluation of differential gene expression across individuals with mixed ancestry to associate the genomic architecture of reproductive barriers with expression of reproductive incompatibilities...
March 2018: Molecular Ecology
Cinzia Di Pietro, Salvatore Caruso, Rosalia Battaglia, Marco Iraci Sareri, Alessandro La Ferlita, Fabrizio Strino, Gabriele Bonaventura, Maurizio Di Mauro, Maria Luisa Barcellona, Vincenzo Perciavalle, Michele Purrello, Antonio Cianci
PROBLEM: Chronic endometritis (CE) is usually asymptomatic and different studies demonstrated the relation with infertility and recurrent pregnancy loss. Altered regulation of protein-encoding genes in CE has been demonstrated, but no evidence about the involvement of microRNAs in the pathology is present in literature. METHOD OF STUDY: In the endometrium from 15 women with CE and 15 healthy women, by RT-qPCR single assays, we investigated some microRNAs targeting IL11, CCL4, IGF1, and IGFBP1, which mRNAs had been found differentially expressed in endometrium of women affected by CE...
April 16, 2018: American Journal of Reproductive Immunology: AJRI
Bibhas Kar, Subbiah Sivamani, Shankar Kundavi, Thankam Rama Varma
Objective: The present study outlines three cases of a Robertsonian translocation and the consequences for the initiation of pregnancy by intracytoplasmic sperm injection (ICSI). Three case histories are presented documenting structural chromosome abnormalities in infertile males. Materials and Methods: Semen analysis was performed according to the World Health Organization guidelines. Chromosome analysis was performed using G-banding. Y chromosome microdeletions were detected by multiplex polymerase chain reaction assays...
April 2018: Journal of Obstetrics and Gynaecology of India
Yathish H M, Subodh Kumar, Rajni Chaudhary, Chinmoy Mishra, Sivakumar A, Amit Kumar, Anuj Chauhan, S K Ghosh, Abhijit Mitra
Protamines (PRMs), important proteins of chromatin condensation in spermiogenesis, are promising candidate genes to explore markers of sperm motility. The coding and in-silico predicted promoter regions of these genes were investigated in 102 crossbred and 32 purebred cattle. Also, mRNA quantification was done to explore its possibility as diagnostic tool of infertility. The PCR-SSCP analysis indicated there were two band patterns only in fragment I of the PRM1 and fragment II of the PRM2 gene. The sequence analysis revealed A152G and G179A transitions in the PRM1 gene...
April 10, 2018: Animal Reproduction Science
Mustapha Benkhalifa, Yosra Zayani, Véronique Bach, Henri Copin, Moncef Feki, Moncef Benkhalifa, Monia Allal-Elasmi
The progress in in vitro fertilization (IVF) techniques for infertility management has led to the investigation of embryo implantation site proteins such as Matrix metalloproteinases (MMPs), which may have a key role in embryo-endometrium crosstalk and in the molecular mechanisms of the embryo implantation. Areas covered: Numerous studies have generated much information concerning the relation between the different proteins at the site of implantation such as cytokines, growth factors, adhesion molecules and MMPs...
April 12, 2018: Expert Review of Proteomics
Marie-Madeleine Dolmans, Rossella Masciangelo
Improvements in cancer treatments have increased the chances of survival of young cancer patients, but have given rise to other issues, like premature ovarian insufficiency and infertility. Preservation and subsequent restoration of ovarian function in these patients is now possible thanks to ovarian tissue cryopreservation and transplantation. However, safety concerns about the possible presence of cancerous cells in the tissue to be cryopreserved must be addressed. Indeed, reimplantation of malignant cell-contaminated ovarian tissue could potentially lead to recurrence of the primary disease...
April 11, 2018: Minerva Ginecologica
Alessandra Ordinelli, Nicola Bernabò, Massimiliano Orsini, Mauro Mattioli, Barbara Barboni
BACKGROUND: For over sixty years, it has been known that mammalian spermatozoa immediately after ejaculation are virtually infertile. They became able to fertilize only after they reside for long time (hours to days) within female genital tract where they complete their functional maturation, the capacitation. This process is finely regulated by the interaction with the female environment and involves, in spermatozoa, a myriad of molecules as messengers and target of signals. Since, to date, a model able to represent the molecular interaction that characterize sperm physiology does not exist, we realized the Human Sperm Interactme Network3...
April 11, 2018: BMC Systems Biology
Bin-Bin Huang, Xiao-Chun Liu, Xiao-Yun Qin, Jie Chen, Pei-Gen Ren, Wei-Fen Deng, Jian Zhang
Obesity is a chronic multifactorial disease prevalent in many areas of the world and is a major cause of morbidity and mortality. In women, obesity increases the risks of both metabolic and reproductive diseases, such as diabetes and infertility. The mechanisms underlying these effects, especially in young women, are largely unknown. To explore these mechanisms, we established a high-fat diet (HFD) model of obesity in immature female mice. Microarray analysis of gene expression in ovaries and white adipose tissue identified a large number of differentially expressed genes (>1...
January 1, 2018: Reproductive Sciences
Feng Guo, Chenchen Si, Mingjuan Zhou, Jingwen Wang, Dan Zhang, Peter C K Leung, Bufang Xu, Aijun Zhang
STUDY QUESTION: Is recurrent implantation failure (RIF) associated with decreased expression of platelet and endothelial cell adhesion molecule 1 (PECAM1) and transforming growth factor β1 (TGF-β1) in the endometrium during the implantation window? SUMMARY ANSWER: The present study demonstrates that the expression of PECAM1 and TGF-β1 is significantly decreased in the mid-secretory endometrium in women with RIF, which may account for embryo implantation failure...
March 30, 2018: Human Reproduction
Ewa Boniewska-Bernacka, Anna Pańczyszyn, Natalia Cybulska
In recent years, male infertility has become a growing social problem. Standard diagnostic procedures, based on assessing seminological parameters, are often insufficient to explain the causes of male infertility. Because of this, new markers with better clinical application are being sought. One of the promising markers seems to be an assessment of telomere length of sperm. Sperm telomeres, in contrast to somatic cells, are elongated as men age. The results of some studies suggest that telomere length may be relevant in the case of fertilization and normal embryo development...
April 2, 2018: Human Fertility: Journal of the British Fertility Society
Kelly Comerford Wormer, Ayesha A Jangda, Farah A El Sayed, Katherine I Stewart, Sunni L Mumford, James H Segars
BACKGROUND: The majority of serious thromboembolic events occurring in assisted reproductive technologies (ART) are in women with ovarian hyperstimulation syndrome (OHSS). OBJECTIVES: The purpose of this study was to present a thorough review and cost analysis regarding the use of venous thromboembolism (VTE) prophylaxis in OHSS to inform clinical management. DATA SOURCES: Databases used were Pubmed and Embase, in addition to checking reference lists of retrieved articles (inception to November 2017)...
March 19, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
Bingfang Xu, Stephen D Turner, Barry T Hinton
A fully functional initial segment, the most proximal region of the epididymis, is important for male fertility. Our previous study generated a mouse model to investigate the importance of initial segment function in male fertility. In that model, Pten was conditionally removed from the initial segment epithelium, which resulted in epithelial de-differentiation. When spermatozoa progressed through the de-differentiated epithelial duct, they developed angled flagella, suggesting compromised sperm maturation, which eventually resulted in male infertility...
March 24, 2018: Biology of Reproduction
Marcos R Escobedo-Guerra, Mitzuko Katoku-Herrera, Marcela Lopez-Hurtado, Rodrigo Gutierrez-Trujillo, Fernando M Guerra-Infante
BACKGROUND: Neisseria gonorrhoeae is one of the main etiological agents of sexually transmitted diseases. The asymptomatic course of the infection and its resistance to antibiotics can lead to pelvic inflammatory disease and infertility. OBJECTIVES: We developed a polymerase chain reaction (PCR) test using the methyltetrahydrofolate homocysteine methyltransferase reductase (mtrR) gene to identify N. gonorrhoeae and detect reduced susceptibility to antibiotics. MATERIAL AND METHODS: We analysed 250 samples of endocervical exudate from infertile women with a negative diagnosis of N...
March 27, 2018: Molecular Diagnosis & Therapy
Asghar Beigi Harchegani, Hossein Shafaghatian, Eisa Tahmasbpour, Alireza Shahriary
MicroRNAs (miRNAs) are a novel class of small noncoding RNAs (ncRNAs) that play critical roles in regulation of gene expression, especially at posttranscriptional level. Over the past decade, the degree to which miRNAs are involved in male infertility has become clear. They are expressed in a cell- or phase-specific manner during spermatogenesis and play crucial role in male reproductive health. Therefore, dysregulation of miRNAs in testicular cells can be considered as a molecular basis for reproductive failure and male infertility...
January 1, 2018: Reproductive Sciences
Vincentaben Khristi, V Praveen Chakravarthi, Prabhakar Singh, Subhra Ghosh, Archit Pramanik, Anamika Ratri, Shaon Borosha, Katherine F Roby, Michael W Wolfe, M A Karim Rumi
Estrogen receptor 2 (ESR2) plays a critical role in folliculogenesis and ovulation. Disruption of ESR2-function in the rats results in female infertility due to failure of ovulation. Ovulation failure occurred in two distinct rat models, a null mutant and a DNA binding domain (DBD) mutant of ESR2, indicating that transcriptional regulation by ESR2 is indispensable for ovulation. To define the regulatory role of ESR2 in preovulatory follicular maturation and ovulation, we investigated ovarian responsiveness to exogenous gonadotropins in prepubertal females...
March 23, 2018: Molecular and Cellular Endocrinology
Mahlet D Mersha, Karla R Sanchez, Murali K Temburni, Harbinder S Dhillon
Bisphenols, such as bisphenol A (BPA) and bisphenol S (BPS) are polymerizing agents widely used in the production of plastics and numerous everyday-use products. Based on their chemical structure and estradiol-like biological properties, they have been classified as endocrine disrupting compounds (EDC). Long-term exposure to EDCs, even at low doses, has been linked to various health defects including cancer, behavioral disorders and infertility, with greater vulnerability indicated during early developmental periods...
March 6, 2018: Journal of Visualized Experiments: JoVE
Mohamad Irani, Dimitrios Nasioudis, Steven S Witkin, Vinay Gunnala, Steven D Spandorfer
An elevated level of insulin growth factor (IGF-1) in rat uterine fluid has been shown to exert detrimental effects of embryo development possibly leading to an increase in pregnancy loss. Interestingly, the administration of somatostatin to rats undergoing superovulation reduced IGF-1 levels in uterine luminal fluid and thus reversed its deleterious effects on embryo development and increased the number of normal embryos. Therefore, we investigated whether serum levels of IGF-1 correlate with the incidence of pregnancy loss following IVF...
March 16, 2018: Journal of Reproductive Immunology
Md Sadequl Islam, Md Ariful Islam, Mst Minara Khatun, Sukumar Saha, Md Samiul Basir, Md-Mahmodul Hasan
Brucellosis is endemic in Bangladesh both in humans and in animals. A number of reasons complicate the diagnosis, as bovine brucellosis can be diagnosed by various serological tests. But the tests have a limitation; when the organism remains intracellular, the disease goes into chronic stage and the antibody titres may decline. The present study was conducted for isolation and detection of Brucella spp. by polymerase chain reaction (PCR) from seronegative cows. A total of 360 dairy cows from three geographical regions were screened serologically by Rose Bengal Plate Test (RBPT) where 24 samples were serologically positive and the rest of the samples were serologically negative...
2018: Journal of Pathogens
Budimir S Ilić, Ana Kolarević, Gordana Kocić, Andrija Šmelcerović
Apoptotic and/or ROS-induced DNA fragmentation in sperm cells may contribute to the development of male infertility. As the known dietary antioxidant, ascorbic acid prevents ROS production and protects sperm cells from DNA damage. Here, we found that ascorbic acid has the ability to inhibit DNase I, one of the main endonucleases involved in DNA fragmentation during apoptosis. Site Finder and Molecular docking defined the ascorbic acid interactions with the most important residues of DNase I, including H-donor interactions with Asp 168 and Asn 170, and H-acceptor interaction with Asn 170...
March 15, 2018: Biochemical and Biophysical Research Communications
Sh Mohammadi, M Gholamin, M Mohammadi, A Mansouri, R Mahmoodian, S Attari, S M Kebriaei, B Zibaei, M Roshanaei, F Daneshvar, M Khandehro, M A Khodadadegan, A Delshad, F Mohammadzadeh, Mostafa Peyvandi, Majid Ghayour-Mobarhan, Shima Tavallaie, Samaneh Boroumand-Noughabi, Gordon A A Ferns
In the study of the expression of CatSper genes, consideration of the effects of environmental metal toxicity is very important. Therefore, in this study, the effects of lead acetate and mercury chloride exposure on expression of CatSper genes, sperm parameters, histology of testis and prooxidant antioxidant balance (PAB) values of serum were investigated. A total of 28 mice was divided into four groups. The control group did not receive injections. The sham group received normal saline intraperitoneally. Lead and mercury groups were injected 60 and 1...
March 8, 2018: Environmental Toxicology and Pharmacology
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