Search results for "reproductive and urinary physiology"

2013

MicroRNAs of the miR-302 cluster are involved in early embryonic development and somatic cell reprogramming. Expression of the miR-302 gene is regulated by the binding of the pluripotency factors Oct4, Sox2 and Nanog to the miR-302 promoter. The specific expression pattern of the miR-302 gene suggested that additional transcription factors might be involved in its regulation. Here, we show that the miR-302 promoter is a direct target of the Wnt/β-catenin signaling pathway. We found that the miR-302 promoter contains three different functional Tcf/Lef binding sites. Two of the three sites were located within the cluster of Oct4/Sox2/Nanog binding sites and were essential for Wnt/β-catenin-me…

New reactive isoeugenol based phosphate flame retardant : toward green epoxy resins

2019

A biobased reactive phosphate flame retardant derived from isoeugenol was synthesized and fully characterized (1H, 13C, 31P NMR, FTIR, MS) with the aim of improving flame retardancy behavior of bio...

Male reproductive senescence as a potential source of sexual conflict in a beetle

2011

The link between senescence and reproductive success is a contentious yet crucial issue to our understanding of mate choice, sexual conflict, and the evolution of ageing. By imposing direct (i.e., male fertility) or indirect (i.e., zygote viability) reproductive costs to females, male senescence may lead to sexual conflict at different levels. For example, ageing may affect male ability to deliver sperm, thus setting the scene for sexual conflict over mating, and/or may affect the quality of individual sperm cells, generating the potential for sexual conflict over fertilizing strategies. We addressed these issues by studying the mating behavior, reproductive fitness, and fertilization patte…

Fear of Coronavirus, Stress and Fear of Childbirth in Polish Pregnant Women during the COVID-19 Pandemic

2021

The COVID-19 pandemic is the largest pandemic of an aggressive coronavirus in the human population in the 21st century. The pandemic may have a negative emotional impact on pregnant women, causing fear and stress. Negative feelings during pregnancy later affect fear of childbirth. Our study aimed to determine the relationship between fear of COVID-19, stress and fear of childbirth. We assume that fear of COVID-19 will be a mediator of the relationship between perceived stress and fear of childbirth. A total of 262 Polish pregnant women participated in this study. Perceived Stress Scale (PSS-10), Fear of COVID-19 Scale (FOC-6) and Labour Anxiety Questionnaire (KLP II) were used in the study.…

Competición intrasexual en el trabajo: diferencias sexuales en celos y envidia en el trabajo

2012

ResumenDesde una perspectiva evolucionista, este articulo aborda las diferencias sexuales en las caracteristicas del rival que provocan celos y envidia en el trabajo, y como se relacionan con la competicion intrasexual. La muestra estuvo compuesta por 114 trabajadores de diferentes sectores profesionales. Los rivales provocaron mas celos y envidia en las mujeres que en los hombres cuando eran fisicamente atractivos. En ambos sexos, las habilidades sociales y el poder social y dominancia fueron las caracteristicas del rival que provocaron mas celos y envidia. En las mujeres, los celos provocados por el atractivo fisico del rival se relacionaron con la competicion intrasexual, mientras que en…

Regulation of mating in the budding yeast Saccharomyces cerevisiae by the zinc cluster proteins Sut1 and Sut2

2013

This article is made available through the Brunel Open Access Publishing Fund. Copyright @ The Authors. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The zinc cluster proteins Sut1 and Sut2 play a role in sterol uptake and filamentous growth in the budding yeast Saccharomyces cerevisiae. In this study, we show that they are also involved in mating. Cells that lack both SUT1 and SUT2 were defective in mating. The expression of the genes NCE102 and PRR2 was increased in the sut1 sut2 double deletion mutant…

Preliminary studies on reproduction of Puntazzo puntazzo (Gmelin 1789) (Pisces, Sparidae) under controlled conditions

1985

Abstract Experiments were carried out under controlled conditions in September 1983 on the reproduction of Puntazzo puntazzo (sheepshead bream). The techniques adopted to stimulate spawning, the egg characteristics, and the phases of embryonal development until the sixth day after hatching are described. The best spawning results were obtained with intramuscular injections of HCG at 1 I.U./g of body weight. Optimal fertilization and hatching were observed at 22°C, the mean temperature of the sea water during the natural period of reproduction of Puntazzo puntazzo .

Economic Evaluation of Health Services Costs During Pandemic Influenza A (H1N1) Pdm09 Infection in Pregnant and Non-Pregnant Women in Spain

2016

Background: The healthcare and socio-economic burden resulting from influenza A (H1N1) pdm09 in Spain was considerable. Our aim was to estimate and compare the management (resource utilization) and economic healthcare impact in an at-risk group of unvaccinated pregnant women with an unvaccinated group of non-pregnant woman of childbearing age (15-44 yr old). Methods: We addressed this question with a longitudinal, observational, multicentre study. Inputs were the requirements in managing both groups of women. Outcome measures were healthcare costs. Direct healthcare (including medical utilisation, prescriptions of antivirals, medication, diagnostic tests, and hospitalisation) costs and indi…

Costs of courtship and mating in a sexually cannibalistic orb-web spider: female mating strategies and their consequences for males

2002

The costs of courtship and mating may include increased risks of predation, the transmission of pathogens, and a loss of foraging opportunities. Thus, a female's decision to tolerate a courting male will depend upon how these costs offset the benefits of mating, which will depend on her reproductive and nutritional status. While these costs may be similar for mated and unmated females, the benefits of mating will be less for mated than virgin females. However, the cost of lost foraging opportunities may be higher for females with fewer nutritional reserves necessary for forming eggs. We examined how these costs and benefits influence the courtship and mating behaviour of male and female orb…

“What you do to Children Matters”: Motherhood in Toni Morrison's God Help the Child

2015

Toni Morrison’s latest novel, God Help the Child, explores the damaging effects of racism on motherhood and the dramatic impact of toxic mothering upon children. The institution of patriarchal motherhood fails to enact the critical tasks of motherwork —preservation, nurturance and cultural bearing, while mothering is a potential site of empowerment of black children and African American culture. African American authoritarian parenting style, associated with patriarchal motherhood, has a correlation with diverse factors, such as the legacy of slavery and its survival strategies, low-income and/or single-parent households and the disruption of the motherline. Motherhood distorted by racism c…