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https://www.readbyqxmd.com/read/29778076/design-and-synthesis-of-core-shell-fe-3-o-4-ptmt-composite-magnetic-microspheres-for-adsorption-of-heavy-metals-from-high-salinity-wastewater
#1
Xin Huang, Jinyue Yang, Jingkang Wang, Jingtao Bi, Chuang Xie, Hongxun Hao
In this study, a novel magnetic nanoparticles (MNP) modified by an organodisulfide polymer (PTMT) was designed for adsorption of heavy metals (Hg(II), Pb(II) and Cd(II)) from simulated coal chemical high salinity wastewater. The MNP-PTMT nano-composite was synthesize and characterized by SEM, TEM, FTIR, BET, VSM, TGA and XRD. The results indicate that the wanted MNP-PTMT magnetic nanoparticles were successfully obtained by modification. Adsorption experiments were systematically carried out to evaluate the performance of the obtained nanoparticles and to build up the adsorption models...
May 10, 2018: Chemosphere
https://www.readbyqxmd.com/read/29777964/protection-of-gnrh-analogue-by-chitosan-dextran-sulfate-nanoparticles-for-intravaginal-application-in-rabbit-artificial-insemination
#2
L Casares-Crespo, P Fernández-Serrano, M P Viudes-de-Castro
The present study was designed to prove new rabbit insemination extenders containing aminopeptidase inhibitors (AMIs) with or without chitosan (CS)-dextran sulfate (DS) nanoparticles entrapping the GnRH analogue. In addition, different hormone concentrations were tested in these extenders, evaluating their in vivo effect on rabbit reproductive performance after artificial insemination. A total of 911 females were inseminated with semen diluted with the four experimental extenders (C4 group: 4 μg buserelin/doe in control medium (Tris-citric acid-glucose supplemented with bestatin 10 μM and EDTA 20 mM), C5 group: 5 μg of buserelin/doe in control medium, Q4 group: 4 μg of buserelin/doe into CS-DS nanoparticles in control medium, Q5 group: 5 μg of busereline/doe into CS-DS nanoparticles in control medium)...
May 16, 2018: Theriogenology
https://www.readbyqxmd.com/read/29777963/red-wolf-canis-rufus-sperm-quality-and-quantity-is-affected-by-semen-collection-method-extender-components-and-post-thaw-holding-temperature
#3
Ashley D Franklin, William T Waddell, Karen L Goodrowe
Cryopreserving genetic resources is becoming increasingly important for species management. In the zoo-based red wolf (Canis rufus) population, inbreeding continues to increase in the absence of new founders. Through banking sperm, we preserve genetic diversity and create the ability to decrease inbreeding accumulation in the future. The quality and quantity of banked sperm can be affected by cryopreservation media and semen collection methods. This study's objectives were to further optimize semen extender used for red wolf sperm cryopreservation, investigate effects of post-thaw holding temperature, and to determine if urethral catheterization is an effective method for semen collection in this species...
May 16, 2018: Theriogenology
https://www.readbyqxmd.com/read/29777921/comparison-of-heavy-metals-parasites-and-histopathology-in-sculpins-myoxocephalus-spp-from-two-sites-at-a-lead-zinc-mine-in-north-east-greenland
#4
Rasmus Dyrmose Nørregaard, Mai Dang, Lis Bach, Ole Geertz-Hansen, Kim Gustavson, Peter Aastrup, Pall S Leifsson, Jens Søndergaard, Barbara Nowak, Christian Sonne
The former lead-zinc mine at Mestersvig, Greenland, continues to contaminate the surrounding environment despite its operations ceasing over 50 years ago. Elevated concentrations of heavy metals are found in water, sediment and biota in the terrestrial, freshwater and marine environments. To shed light on the present contamination and its potential effects on local fish we investigated gill and liver histology of sculpins (Myoxocephalus spp.) around the former mining area. Two species of sculpins were caught; shorthorn sculpins (M...
May 16, 2018: Environmental Research
https://www.readbyqxmd.com/read/29777860/cross-cultural-adaptation-and-validation-of-the-functional-assessment-of-chronic-illness-therapy-cervical-dysplasia-facit-cd-questionnaire-for-serbian-women
#5
Vesna Kesić, Radmila Sparić, Rafal Watrowski, Jelena Dotlić, Radomir Stefanović, Gorica Marić, Tatjana Pekmezović
OBJECTIVES: The FACIT-CD (Functional Assessment of Chronic Illness Therapy - Cervical Dysplasia) questionnaire is a disease-specific instrument for assessing the health-related quality of life (HRQoL) in women with cervical dysplasia. Our aim was to perform a cross-cultural adaptation and psychometric evaluation of the FACIT-CD scale in Serbian women with cervical squamous intraepithelial lesions (SIL). STUDY DESIGN: Our study included women of reproductive age diagnosed with SIL in a single university-affiliated hospital...
May 16, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29777688/proteomic-changes-during-adult-stage-in-pre-optic-hypothalamus-hippocampus-and-pituitary-regions-of-female-rat-brain-following-neonatal-exposure-to-estradiol-17%C3%AE
#6
Vijayakumar Govindaraj, Radhika Nagamangalam Shridharan, Addicam Jagannadha Rao
Although neonatal exposure to estrogen or estrogenic compounds results in irreversible changes in the brain function and reproductive abnormalities during adulthood but the underlying mechanisms are still largely unknown. The present study has attempted to compare the protein profiles of sexually dimorphic brain regions of adult female rats which were exposed to estradiol- 17β during neonatal period. The total proteins extracted from pre-optic area (POA), hypothalamus, hippocampus and pituitary of control and neonatally E2 treated female rats was subjected to 2D-SDS-PAGE and differentially expressed proteins were identification by MALDI TOF/TOF-MS...
May 16, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29777656/rapid-sex-steroid-effects-on-reproductive-responses-in-male-goldfish-sensory-and-motor-mechanisms
#7
REVIEW
Richmond R Thompson, Lisa A Mangiamele
No abstract text is available yet for this article.
May 16, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29777648/reasons-for-discontinuation-of-implanon-among-users-in-buffalo-city-metropolitan-municipality-south-africa-a-cross-sectional-study
#8
Khungelwa Patricia Mrwebi, Daniel Ter Goon, Eyitayo Omolara Owolabi, Oladele Vincent Adeniyi, Eunice Seekoe, Anthony Idowu Ajayi
Early discontinuation of implanon, a long-acting, reversible contraceptive among reproductive age women in South Africa is a serious public health concern. The aim of this study was to examine the reasons for discontinuation of implanon among its previous users. This descriptive cross-sectional study involved 188 consecutively selected participants in two large family planning clinics in Buffalo Metropolitan Municipality, East London, South Africa. Descriptive statistics was conducted using SPSS version 22...
March 2018: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29777645/-childbirth-is-not-a-sickness-a-woman-should-struggle-to-give-birth-exploring-continuing-popularity-of-home-births-in-western-kenya
#9
Violet Naanyu, Joyce Baliddawa, Beatrice Koech, Julie Karfakis, Nancy Nyagoha
More than 95% of Kenyan women receive antenatal care (ANC) and only 62% access skilled delivery. To explore women's opinion on delivery location, 20 focus group discussions were conducted at an urban and rural setting in western Kenya. Participants included health care workers, traditional birth attendants (TBAs), and women who attended at least four ANC visits and delivered. Six in-depth interviews were also conducted with a combination of women who gave birth in a facility and at home. Discussions were digitally recorded and transcribed for analysis...
March 2018: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29777644/closing-the-gap-between-people-and-programs-lessons-from-implementation-of-social-accountability-for-family-planning-and-reproductive-health-in-uganda
#10
Vicky Boydell, Stella Neema, Kelsey Wright, Karen Hardee
Globally, women's access to modern contraception can be attributed to poor service conditions and care. Growing evidence from across the health sector has found that social accountability approaches have the potential to improve the quality of care and therefore the utilization of health services, little of this evidence relates to family planning and reproductive health programs. This paper therefore assessed the results of retrospective implementation research into a five-year social accountability project in Uganda that focused on family planning and reproductive health...
March 2018: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29777642/reaching-urban-female-adolescents-at-key-points-of-sexual-and-reproductive-health-transitions-evidence-from-a-longitudinal-study-from-kenya
#11
Ilene S Speizer, Lisa M Calhoun, David K Guilkey
Urban areas include large numbers of adolescents (ages 15-19) and young adults (ages 20-24) who may have unmet sexual and reproductive health (SRH) needs. Worldwide, adolescents contribute 11% of births, many of which are in low and middle-income countries. This study uses recently collected longitudinal data from urban Kenyan women to examine the association between targeted intervention activities and adolescents' SRH transitions. The focus was on a female adolescent (15-19) sample and their transition to first sex and first pregnancy/birth...
March 2018: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29777641/social-norms-and-adolescents-sexual-health-an-introduction-for-practitioners-working-in-low-and-mid-income-african-countries
#12
Beniamino Cislaghi, Holly Shakya
Donors, practitioners and scholars are increasingly interested in harnessing the potential of social norms theory to improve adolescents' sexual and reproductive health outcomes. However, social norms theory is multifaceted, and its application in field interventions is complex. An introduction to social norms that will be beneficial for those who intend to integrate a social norms perspective in their work to improve adolescents' sexual health in Africa is presented. First three main schools of thought on social norms, looking at the theoretical standpoint of each, are discussed...
March 2018: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29777417/effects-of-dietary-microencapsulated-cymbopogon-flexuosus-essential-oil-on-reproductive-related-parameters-in-male-rhamdia-quelen
#13
Carine de Freitas Souza, Cristine Rampelotto, Bruno Bianchi Loureiro, Fernanda Alves Pereira, Adriane Erbice Bianchini, Carine Dahl Corcini, Antonio Sergio Varela Junior, Tatiana Emanuelli, Leila Picolli da Silva, Sílvio Teixeira da Costa, Kalyne Bertolin, Monique Tomazele Rovani, Paulo Bayard Dias Gonçalves, Berta Maria Heinzmann, Bernardo Baldisserotto
In aquaculture, nutrition and supplemented diets have been shown to affect broodstock reproductive performance. In this study, we investigated the effects of dietary supplementation with Cymbopogon flexuosus essential oil (CFEO) microcapsules on reproductive-related parameters in silver catfish (Rhamdia quelen) male broodfish. Adult male broodstocks were separated into three groups according to the concentrations of supplemented CFEO (0.0 = control; 1.0 or 3.0 mL per kg of diet). After 20 days under experimental conditions, the animals were euthanized and the gonads were harvested for gonadosomatic index, sperm analysis, oxidative stress, and histopathology; testosterone levels were measured in the plasma; gene expression of prl, smtl, pomca, and pomcb was assessed in the pituitary gland by real-time PCR...
May 18, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29777415/preparation-of-biologically-active-monomeric-recombinant-zebrafish-danio-rerio-and-rainbow-trout-oncorhynchus-mykiss-recombinant-growth-hormones
#14
Ewa Ocłoń, Gili Solomon, Zvi Hayouka, Arieh Gertler
Fish growth hormones (GHs) play an important role in regulating growth, metabolism, reproduction, osmoregulation, and immunity and have thus garnered attention for their application in aquaculture. Zebrafish GH (zGH) cDNA or rainbow trout GH (rtGH) cDNA was cloned into the pMon3401 vector, expressed in MON105-competent Escherichia coli and purified to homogeneity. Their biological activity was evidenced by their ability to interact with ovine GH receptor extracellular domain and stimulate GH receptor-mediated proliferation in FDC-P1-3B9 cells stably transfected with rabbit GH receptor...
May 18, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29777319/what-does-sex-have-to-do-with-it-the-role-of-sex-as-a-biological-variable-in-the-development-of-posttraumatic-stress-disorder
#15
REVIEW
Sara L Kornfield, Liisa Hantsoo, C Neill Epperson
PURPOSE OF REVIEW: This review highlights the neurobiological aspects of sex differences in posttraumatic stress disorder (PTSD), specifically focusing on the physiological responses to trauma and presents evidence supporting hormone and neurosteroid/peptide differences from both preclinical and clinical research. RECENT FINDINGS: While others have suggested that trauma type or acute emotional reaction are responsible for women's disproportionate risk to PTSD, neither of these explanations fully accounts for the sex differences in PTSD...
May 18, 2018: Current Psychiatry Reports
https://www.readbyqxmd.com/read/29777183/harmless-sea-snail-parasite-causes-mass-mortalities-in-numerous-commercial-scallop-populations-in-the-northern-hemisphere
#16
Árni Kristmundsson, Mark Andrew Freeman
Apicomplexans comprise a group of unicellular, often highly pathogenic, obligate parasites exploiting either one or two hosts to complete a full reproductive cycle. For decades, various scallop populations have suffered cyclical mass mortality events, several of which shown to be caused by apicomplexan infections. We report the first dual mollusc life cycle for an apicomplexan: a species highly pathogenic in various pectinid bivalve species, but apathogenic when infecting the common whelk as Merocystis kathae...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777168/the-genetic-basis-of-female-pheromone-differences-between-drosophila-melanogaster-and-d-simulans
#17
Jessica A Pardy, Howard D Rundle, Mark A Bernards, Amanda J Moehring
Chemical signals are one means by which many insect species communicate. Differences in the combination of surface chemicals called cuticular hydrocarbons (CHCs) can influence mating behavior and affect reproductive isolation between species. Genes influencing three CHC compounds have been identified in Drosophila melanogaster. However, the genetic basis of other CHC compounds, whether these genes affect species differences in CHCs, and the genes' resulting effect on interspecies mating, remains unknown. We used fine-scale deficiency mapping of the third chromosome to identify 43 genomic regions that influence production of CHCs in both D...
May 19, 2018: Heredity
https://www.readbyqxmd.com/read/29777142/the-programmed-dna-elimination-and-formation-of-micronuclei-in-germ-line-cells-of-the-natural-hybridogenetic-water-frog-pelophylax-esculentus
#18
Magdalena Chmielewska, Dmitry Dedukh, Katarzyna Haczkiewicz, Beata Rozenblut-Kościsty, Mikołaj Kaźmierczak, Krzysztof Kolenda, Ewa Serwa, Agnieszka Pietras-Lebioda, Alla Krasikova, Maria Ogielska
DNA elimination is a radical form of gene silencing and occurs both in somatic and germ cells. The programmed DNA elimination occurs during gametogenesis in interspecies hybrids that reproduce by hybridogenesis (stick insects, fishes, and amphibians) and concerns removal of whole genomes of one of the parental species and production of clonal gametes propagating the genome of the other species. The cellular mechanisms differ considerably in hybridogenetic insects and fishes but remains unknown in edible frogs Pelophylax esculentus, natural hybrids between Pelophylax lessonae and Pelophylax ridibundus...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777111/knockdown-of-rna-interference-pathway-genes-impacts-the-fitness-of-western-corn-rootworm
#19
Courtney Davis-Vogel, Angel Ortiz, Lisa Procyk, Jonathan Robeson, Adane Kassa, Yiwei Wang, Emily Huang, Carl Walker, Amit Sethi, Mark E Nelson, Dipali G Sashital
Western corn rootworm (Diabrotica virgifera virgifera) is a serious agricultural pest known for its high adaptability to various management strategies, giving rise to a continual need for new control options. Transgenic maize expressing insecticidal RNAs represents a novel mode of action for rootworm management that is dependent on the RNA interference (RNAi) pathways of the insect for efficacy. Preliminary evidence suggests that western corn rootworm could develop broad resistance to all insecticidal RNAs through changes in RNAi pathway genes; however, the likelihood of field-evolved resistance occurring through this mechanism remains unclear...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777000/nmt1-and-nmt3-n-methyltransferase-activity-is-critical-to-lipid-homeostasis-morphogenesis-and-reproduction
#20
Weihua Chen, Hooman Salari, Matthew C Taylor, Ricarda Jost, Oliver Berkowitz, Russell Barrow, Deyun Qiu, Remi Branco, Josette Masle
Phosphatidylcholine (PC) is a major membrane phospholipid and a precursor for most signalling molecules. Understanding its synthesis is important for improving plant growth, nutritional value and resistance to stress. PC synthesis is complex, involving several interconnected pathways, one of which proceeds from serine-derived phosphoethanolamine (PEA) to form phosphocholine (PCho) through three sequential phospho-base methylations catalysed by phosphoethanolamine N-methyltransferases (PEAMTs). The contribution of this pathway to the production of PC and plant growth has been a matter of some debate...
May 18, 2018: Plant Physiology
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