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https://www.readbyqxmd.com/read/29346618/evidence-of-adaptive-evolution-and-relaxed-constraints-in-sex-biased-genes-of-south-american-and-west-indies-fruit-flies-diptera-tephritidae
#1
Carlos Congrains, Emeline B Campanini, Felipe R Torres, Víctor B Rezende, Aline M Nakamura, Janaína L de Oliveira, André L A Lima, Samira Chahad-Ehlers, Iderval S Sobrinho, Reinaldo A de Brito
Several studies have demonstrated that genes differentially expressed between sexes (sex-biased genes) tend to evolve faster than unbiased genes, particularly in males. The reason for this accelerated evolution is not clear, but several explanations have involved adaptive and non-adaptive mechanisms. Furthermore, the differences of sex-biased expression patterns of closely related species are also little explored out of Drosophila. To address the evolutionary processes involved with sex-biased expression in species with incipient differentiation, we analyzed male and female transcriptomes of Anastrepha fraterculus and A...
January 15, 2018: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29346447/pik3ca-is-required-for-mouse-uterine-gland-development-and-pregnancy
#2
Hye Jin Chang, Hee Sung Shin, Tae Hoon Kim, Jung-Yoon Yoo, Hanna E Teasley, Jean J Zhao, Un-Hwan Ha, Jae-Wook Jeong
The PI3K/AKT signaling pathway plays a critical role in the maintenance of equilibrium between cell survival and apoptosis. The Pik3ca gene is mutated in a range of human cancers. It has been found to be oncogenic, and mutations lead to constitutive activation of the PI3K/AKT pathway. The expression patterns of PIK3CA proteins in the uterus of mice during early pregnancy indicate that it may play a role in the regulation of glandular epithelial cells, which is required to support uterine receptivity. To further investigate the role of Pik3ca in uterine function, Pik3ca was conditionally ablated only in the PGR-positive cells (Pgrcre/+Pik3caf/f; Pik3cad/d)...
2018: PloS One
https://www.readbyqxmd.com/read/29346389/rising-up-fertility-trends-in-egypt-before-and-after-the-revolution
#3
Emma Radovich, Atef El-Shitany, Hania Sholkamy, Lenka Benova
In 2014, Egypt's Demographic and Health Survey (EDHS) documented an increase in the total fertility rate (TFR) to 3.5, up from a low of 3.0 recorded by the 2008 EDHS. The increase has been anecdotally attributed to the social upheaval following Egypt's January 2011 revolution, but little is known about when fertility first began to increase and among which sub-groups of women. Using birth histories from seven rounds of EDHS (1992-2014), this study reconstructed fertility rates for single years from 1990-2013 and examined patterns of childbearing in five-year birth cohorts of women...
2018: PloS One
https://www.readbyqxmd.com/read/29346308/tissue-engineering-to-improve-immature-testicular-tissue-and-cell-transplantation-outcomes-one-step-closer-to-fertility-restoration-for-prepubertal-boys-exposed-to-gonadotoxic-treatments
#4
REVIEW
Federico Del Vento, Maxime Vermeulen, Francesca de Michele, Maria Grazia Giudice, Jonathan Poels, Anne des Rieux, Christine Wyns
Despite their important contribution to the cure of both oncological and benign diseases, gonadotoxic therapies present the risk of a severe impairment of fertility. Sperm cryopreservation is not an option to preserve prepubertal boys' reproductive potential, as their seminiferous tubules only contain spermatogonial stem cells (as diploid precursors of spermatozoa). Cryobanking of human immature testicular tissue (ITT) prior to gonadotoxic therapies is an accepted practice. Evaluation of cryopreserved ITT using xenotransplantation in nude mice showed the survival of a limited proportion of spermatogonia and their ability to proliferate and initiate differentiation...
January 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29346283/the-biological-role-of-hyaluronan-rich-oocyte-cumulus-extracellular-matrix-in-female-reproduction
#5
REVIEW
Eva Nagyova
Fertilization of the mammalian oocyte requires interactions between spermatozoa and expanded cumulus extracellular matrix (ECM) that surrounds the oocyte. This review focuses on key molecules that play an important role in the formation of the cumulus ECM, generated by the oocyte-cumulus complex. In particular, the specific inhibitors (AG1478, lapatinib, indomethacin and MG132) and progesterone receptor antagonist (RU486) exerting their effects through the remodeling of the ECM of the cumulus cells surrounding the oocyte have been described...
January 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29346161/promotion-of-exercise-in-multiple-sclerosis-through-healthcare-providers
#6
Robert W Motl, Elizabeth A Barstow, Sarah Blaylock, Emma Richardson, Yvonne C Learmonth, Matthew Fifolt
Participation in exercise yields meaningful benefits among persons with multiple sclerosis(MS), yet this population engages in low rates of health-promoting physical activity. The disconnect between evidence of benefits and rates of participation requires consideration of new opportunities for changing this health behavior. The current paper hypothesizes that the patient-provider interaction offers a fertile opportunity for promoting exercise behavior in MS.
January 15, 2018: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/29346023/fertility-preservation-in-pediatric-oncology-patients-new-perspectives
#7
Chiara Gertosio, Mariasole Magistrali, Paola Musso, Cristina Meazza, Mauro Bozzola
Over the past 30 years, advances in antineoplastic treatment led to a significant increase in the survival of patients with childhood cancer. In Europe and the United States, 82% of children, adolescents, and young adults survive 5 years from the cancer diagnosis and the majority achieves long-term survival into adulthood. The impact of cancer therapy on fertility is related to the age of the patient and to the duration, dose/intensity, and type of treatment. Exposure to chemotherapy or to radiation to gonads or pituitary brings long-term complications of cancer-directed therapies that include effects on reproductive capacity...
January 18, 2018: Journal of Adolescent and Young Adult Oncology
https://www.readbyqxmd.com/read/29345507/ovarian-tissue-cryopreservation-in-young-females-through-the-oncofertility-consortium-s-national-physicians-cooperative
#8
Austin G Armstrong, Bruce F Kimler, Brigid M Smith, Teresa K Woodruff, Mary Ellen Pavone, Francesca E Duncan
AIM: To characterize the clinical indications of females (<15 years old) undergoing ovarian tissue cryopreservation (OTC) through the Oncofertility Consortium's National Physicians Cooperative (OC-NPC). PATIENTS & METHODS: The clinical indications of 114 females who underwent OTC were classified, and their incidence was compared with childhood cancer databases. RESULTS: Leukemias/myeloproliferative diseases/myelodysplastic diseases and hemoglobinopathies were the most prevalent oncologic and nononcologic indications for OTC, respectively...
January 18, 2018: Future Oncology
https://www.readbyqxmd.com/read/29345446/the-first-south-american-case-of-pre-implantation-genetic-diagnosis-to-select-compatible-embryo-for-cord-blood-transplantation-as-treatment-for-sickle-cell-anemia
#9
Ciro D Martinhago, Kalina Rn Endo, Mariana A Oliveira, Alex Mm Dias, Gislaine S Pereira, Augusto M Azzolini, Paula Rq Estrada, Caio G Bruzaca, Ana Carolina N Martinhago
Sickle cell anemia is an inherited systemic hemoglobinopathy that affects hemoglobin production in red blood cells, leading to early morbidity and mortality. It is caused by a homozygous nucleotide substitution (c.20A>T) in the β-globin gene (HBB) that changes a glutamic acid to a valine in the protein. We present a case report of a fertile couple, both carriers of the sickle cell anemia mutation, with one affected daughter. Six cycles of assisted reproductive techniques were performed, resulting in 53 embryos in cleavage stage...
January 18, 2018: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/29345310/a-potential-role-of-knockout-serum-replacement-as-a-porcine-follicular-fluid-substitute-for-in-vitro-maturation-lipid-metabolism-approach
#10
Jun-Xue Jin, Sanghoon Lee, Erif Maha Nugraha Setyawan, Anukul Taweechaipaisankul, Geon A Kim, Ho Jae Han, Curie Ahn, Byeong Chun Lee
The use of supplements, such as porcine follicular fluid (pFF), fetal bovine serum and human serum albumin are widely used during in vitro maturation (IVM) in different species but these supplements contain undefined components that cause technical difficulties in standardization and influence the efficiency of IVM. Knockout serum replacement (KSR) is a synthetic protein source, without any undefined growth factors or differentiation-promoting factors. Therefore, it is feasible to use KSR as a defined component for avoiding effects of unknown molecules in an IVM system...
January 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29345168/mother-s-age-at-menopause-but-not-own-age-at-menarche-has-an-impact-on-ovarian-reserve
#11
Jessika Moreau, Nicolas Gatimel, Clémentine Cohade, Jean Parinaud, Roger Léandri
To detect clinical parameters impacting ovarian reserve, data were analyzed from 573 patients who had an anti-Müllerian hormone (AMH) measurement for infertility treatment. No impact was found on the age at menarche but a significant diminished ovarian reserve was observed when a patient's mother was menopausal before age 50. These data suggest that ovarian reserve must be monitored in such patients to offer them fertility preservation when at risk of premature ovarian insufficiency (POI).
January 18, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29345165/oral-contraceptive-pills-as-an-option-for-non-surgical-management-of-retained-products-of-conception-a-preliminary-study
#12
Anat Hershko Klement, Mitri Frederic, Yaakov Bentov, Paul Chang, Dan Nayot, Jigal Haas, Robert F Casper
Many Patients with persistent retained products of conception prefers to avoid surgical interventions, such as a dilatation and curettage (D&C) that might pose an additional future risk to their already compromised fertility or obstetric performance. The aim of this study was to the possibility of induced withdrawal bleeding following oral contraceptive administration as a non-surgical treatment for patients with persistent retained products of conception (RPOC). A retrospective study of patients presenting with retained products of conception (RPOC) after failed expectant management or after treatment with PGE1 was performed...
January 18, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29344926/the-mexican-drug-war-and-early-life-health-the-impact-of-violent-crime-on-birth-outcomes
#13
Ryan Brown
This study examines the relationship between exposure to violent crime in utero and birth weight using longitudinal data from a household survey conducted in Mexico. Controlling for selective migration and fertility, the results suggest that early gestational exposure to the recent escalation of the Mexican Drug War is associated with a substantial decrease in birth weight. This association is especially pronounced among children born to mothers of low socioeconomic status and among children born to mothers who score poorly on a mental health index...
January 17, 2018: Demography
https://www.readbyqxmd.com/read/29344838/association-between-human-brucellosis-and-adverse-pregnancy-outcome-a-cross-sectional-population-based-study
#14
Nesrin Ghanem-Zoubi, Silvia Pessah Eljay, Emilia Anis, Mical Paul
To investigate the association between the incidence of human brucellosis (HB) and adverse pregnancy outcomes (APOs), a population-based, cross-sectional aggregate data study was conducted in Israel between 2010 and 2014. HB-endemic localities were matched by ethnicity, population size and socioeconomic status to localities with a low incidence of HB. We compared APO rates in high-incidence vs low-incidence localities. The primary outcome was intrauterine fetal demise (IUFD). Secondary outcomes were premature birth (less than 37 weeks), early or threatened labour and poor fetal growth...
January 17, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29344314/aberrant-expression-and-dna-methylation-of-lipid-metabolism-genes-in-pcos-a-new-insight-into-its-pathogenesis
#15
Jie-Xue Pan, Ya-Jing Tan, Fang-Fang Wang, Ning-Ning Hou, Yu-Qian Xiang, Jun-Yu Zhang, Ye Liu, Fan Qu, Qing Meng, Jian Xu, Jian-Zhong Sheng, He-Feng Huang
Background: Polycystic ovary syndrome (PCOS), whose etiology remains uncertain, is a highly heterogenous and genetically complex endocrine disorder. The aim of this study was to identify differentially expressed genes (DEGs) in granulosa cells (GCs) from PCOS patients and make epigenetic insights into the pathogenesis of PCOS. Results: Included in this study were 110 women with PCOS and 119 women with normal ovulatory cycles undergoing in vitro fertilization acting as the control group...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29344044/ethical-challenges-of-embryo-donation-in-embryo-donors-and-recipients
#16
Mahboubeh Taebi, Reyhane Bahrami, Narges Bagheri-Lankarani, Mohsen Shahriari
Background: Embryo donation, as one of the novel assisted reproductive technologies (ART), has remained a controversial issue. This is due to this methods' need for individuals from outside the family circle. Their presence can cause many ethical issues and complicate the designing and planning of the embryo donation process. The present study was conducted with the aim to assess the ethical challenges of embryo donation from the view point of embryo donors and recipients. Material and Methods: This descriptive, cross-sectional study was conducted on 192 couples (96 embryo donators and 96 embryo recipients) referring to Isfahan Fertility and Infertility Center and Royan Institute, Iran...
January 2018: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/29344039/the-effect-of-auriculotherapy-on-the-stress-and-the-outcomes-of-assistant-reproductive-technologies-in-infertile-women
#17
Mozhgan Saffari, Zahra Khashavi, Mahboubeh Valiani
Background: Infertility means failure to achieve pregnancy after one year of regular unprotected sexual intercourse. Infertile women may experience severe stress and depression. Numerous studies have indicated that auriculotherapy could reduce stress. Thus, the aim of the present study was to determine the effect of auriculotherapy on the stress and the outcome assisted reproductive technology in infertile women. Materials and Methods: The present study was a clinical trial that was conducted on 56 infertile women aged 20-45, who were assigned into two groups of intervention and control, from November 2014 to November 2015...
January 2018: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/29343909/decline-in-semen-parameters-from-2000-to-2016-among-bangladeshi-men-attending-a-tertiary-care-hospital
#18
Nusrat Mahmud, Eshita Sharmin, Md Arif Mamun, Zayan Shamayeen, Natalie Rivadeneira, Roger Rochat, Akanksha Mehta
Introduction: The objective of this study was to analyze longitudinal changes in sperm parameters of Bangladeshi men. We hypothesized that semen parameters declined for this population. Methods: We retrospectively analyzed semen data from men aged 18-64 years who sought care for general sperm quality or updates on fertility status at an infertility clinic in Dhaka, Bangladesh, from January 2000 to June 2016 (n = 13,953). Samples with incomplete data were excluded (n = 143)...
January 2018: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29343605/experimental-heatwaves-negatively-impact-sperm-quality-in-the-zebra-finch
#19
Laura L Hurley, Callum S McDiarmid, Christopher R Friesen, Simon C Griffith, Melissah Rowe
For sexually reproducing species, functionally competent sperm are critical to reproduction. While high atmospheric temperatures are known to influence the timing of breeding, incubation and reproductive success in birds, the effect of temperature on sperm quality remains largely unexplored. Here, we experimentally investigated the impact of ecologically relevant extreme temperatures on cloacal temperature and sperm morphology and motility in zebra finches Taeniopygia guttata We periodically sampled males exposed to 30°C or 40°C temperatures daily for 14 consecutive days...
January 31, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29343598/coadaptation-of-mitochondrial-and-nuclear-genes-and-the-cost-of-mother-s-curse
#20
Tim Connallon, M Florencia Camus, Edward H Morrow, Damian K Dowling
Strict maternal inheritance renders the mitochondrial genome susceptible to accumulating mutations that harm males, but are otherwise benign or beneficial for females. This 'mother's curse' effect can degrade male survival and fertility if unopposed by counteracting evolutionary processes. Coadaptation between nuclear and mitochondrial genomes-with nuclear genes evolving to compensate for male-harming mitochondrial substitutions-may ultimately resolve mother's curse. However, males are still expected to incur a transient fitness cost during mito-nuclear coevolution, and it remains unclear how severe such costs should be...
January 31, 2018: Proceedings. Biological Sciences
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