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https://www.readbyqxmd.com/read/28819756/nanofibers-grafted-on-titanium-alloy-the-effects-of-fiber-alignment-and-density-on-osteoblast-mineralization
#1
Hsin-Yi Lin, Zhao-Xiang Peng
The surface of medical implant alloy Ti-6Al-4V was chemically modified to allow it to covalently bond with collagen/PVA nanofibers. These nanofibers were successfully attached to the Ti-6Al-4V surface in three different morphologies: randomly oriented high-density fiber, COL(H); randomly oriented low-density fiber, COL(L); and aligned high-density fiber, COL(A). The effects of the morphology of these covalently-bound collagen nanofibers on the growth and differentiation of osteoblasts were studied for 21 days...
August 17, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28817740/influence-of-microtextured-implant-surfaces-on-peri-implantitis-and-its-treatment-a-preclinical-trial
#2
Juan C Rodriguez, Tapan Koticha, Diana L Eubanks, Ivan Rudek, Fred J Molz, Ludovica Chiavaccini, Andrew Claude, Steven Elder, Hom-Lay Wang
PURPOSE: The prevalence of peri-implantitis has increased significantly, forcing clinicians to search for ways to prevent it. Laser-microtextured surfaces promote soft tissue attachment and provide a tight seal around implants. Hence, the aim of this study was to examine the clinical, radiographic, and histologic features of ligature-induced peri-implantitis, as well as the effect of surgical treatment of these induced peri-implantitis lesions on laser-microtextured implants in a controlled animal model...
August 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28816464/influence-of-father-infant-relationship-on-infant-development-a-father-involvement-intervention-in-vietnam
#3
Lynn A Rempel, John K Rempel, Toan Nang Khuc, Le Thi Vui
We examined the extent to which fathers can be taught and encouraged to develop positive relationships with their children, especially in infancy, and the effects of this fathering intervention on infant development. A multifaceted relationally focused intervention was used to assist fathers in Vietnam to engage in responsive direct and indirect involvement with their infants and work together with the mother as part of a parenting team. Fathers and mothers from 13 communes in a rural and semiurban district were recruited to the intervention group...
August 17, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28816422/dolichol-kinase-deficiency-dolk-cdg-two-new-cases-and-expansion-of-phenotype
#4
Eric T Rush, Craig V Baker, William B Rizzo
Congenital disorders of glycosylation (CDGs) are a group of genetic diseases caused by mutations in genes that are necessary for the addition of oligosaccharides to acceptor proteins or lipids. An early step in this process requires dolichol kinase (DK) to catalyze the formation of dolichyl phosphate, which acts as a membrane anchor for initial attachment of sugar residues that are subsequently built up to oligosaccharides and transferred to acceptor proteins and lipids for further processing. Biallelic mutations in DOLK, the gene for DK, result in human in a CDG with variable symptoms, ranging from nonsyndromic dilated cardiomypopathy to severe multiorgan involvement...
September 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28813302/divorce-and-health-good-data-in-need-of-better-theory
#5
REVIEW
David A Sbarra, James A Coan
A very large literature links the experiences of marital separation and divorce to risk for a range of poor distal health outcomes, including early death. What is far less clear, however, is the mechanistic pathways that convey this risk. Several plausible mechanisms are identified in the literature, and the central thesis of this paper is that the empirical study of divorce and health will benefit enormously from a renewed reliance on theory to dictate how these mechanisms of action may unfold over time. This review emphasizes the roles of attachment and social baseline theories in making specific mechanistic predictions and highlights the ways in which these perspectives can contribute new empirical knowledge on risk and resilience following marital dissolution...
February 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813257/social-learning-parenting-intervention-research-in-the-era-of-translational-neuroscience
#6
REVIEW
Philip A Fisher, Elizabeth A Skowron
In the decades since social learning parenting interventions emerged, many evidence-based programs have been implemented at scale in community settings, and much research is now focusing on ways to maintain fidelity and impact during the implementation process. Notably, a considerable amount of theoretical confluence has occurred in parenting interventions from social learning, attachment, and other theoretical perspectives, with parent coaching as an example of this new generation of relational interventions...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813253/attachment-theory-progress-and-future-directions
#7
REVIEW
R M Pasco Fearon, Glenn I Roisman
Attachment is a key subfield in the area of parenting and parent-child relationships research. In this brief overview, we summarise what we consider to be the state-of-the-art of attachment research, focusing primarily on the nature and significance of attachment in infancy and early childhood. We review 4 major topics that are central issues in the scientific literature on attachment: (1) the role of the environment in the development of attachment, (2) the intergenerational transmission of patterns of attachment, (3) the stability of attachment patterns through early adulthood, and (4) the role of attachment in adjustment and maladjustment...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28812648/fungus-like-mycelial-fossils-in-2-4-billion-year-old-vesicular-basalt
#8
Stefan Bengtson, Birger Rasmussen, Magnus Ivarsson, Janet Muhling, Curt Broman, Federica Marone, Marco Stampanoni, Andrey Bekker
Fungi have recently been found to comprise a significant part of the deep biosphere in oceanic sediments and crustal rocks. Fossils occupying fractures and pores in Phanerozoic volcanics indicate that this habitat is at least 400 million years old, but its origin may be considerably older. A 2.4-billion-year-old basalt from the Palaeoproterozoic Ongeluk Formation in South Africa contains filamentous fossils in vesicles and fractures. The filaments form mycelium-like structures growing from a basal film attached to the internal rock surfaces...
April 24, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812266/oxytocin-and-social-relationships-from-attachment-to-bond-disruption
#9
Oliver J Bosch, Larry J Young
Social relationships throughout life are vital for well-being and physical and mental health. A significant amount of research in animal models as well as in humans suggests that oxytocin (OT) plays an important role in the development of the capacity to form social bonds, the mediation of the positive aspects of early-life nurturing on adult bonding capacity, and the maintenance of social bonding. Here, we focus on the extensive research on a socially monogamous rodent model organism, the prairie vole (Microtus ochrogaster)...
August 16, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28810245/the-etiology-of-hoarding-disorder-a-review
#10
Mary E Dozier, Catherine R Ayers
This article will review the evidence of various proposed factors that contribute to the onset and maintenance of hoarding disorder (HD). Data suggests that hoarding is a chronic condition that starts early in life and does not remit if left untreated. There is emerging evidence that a number of factors contribute to the expression of HD symptoms, including genetics, neurocognitive functioning, attachments to possessions, beliefs, avoidance, personality factors, and life events. The extent to which each etiological factor uniquely contributes to hoarding is still unknown...
August 16, 2017: Psychopathology
https://www.readbyqxmd.com/read/28808471/management-of-invasive-cervical-root-resorption-in-a-mandibular-canine-using-biodentine-as-a-restorative-material-a-case-report
#11
Leila Eftekhar, Hengameh Ashraf, Sanaa Jabbari
Invasive cervical root resorption (ICR) is the reversible/irreversible loss of tooth structure in the connective tissue attachment zone with unclear etiology. In the present case a history of periodontal surgery was presumed to be the predisposing factor. Early diagnosis and proper treatment may lead to long-term retention of the tooth. The tooth is usually asymptomatic and diagnosis is commonly made as a result of a routine radiographic finding. Cone-beam computed tomography (CBCT) is extremely useful in diagnosis and treatment planning of ICR...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28805141/inhibited-attachment-disordered-behavior-in-institutionalized-preschool-children-links-with-early-and-current-relational-experiences
#12
Raquel Corval, Jay Belsky, Joana Baptista, Paula Oliveira, Ana Mesquita, Isabel Soares
Inhibited attachment disordered behavior (IADB) is characterized by difficulty in establishing an attachment relationship with a primary caregiver; is associated with persistent social and emotional problems; and is observed most frequently in contexts of pathological care such as institutional rearing. Here, we seek to enhance understanding of the conditions that give rise to IADB among institutionalized children by examining prior family experiences of neglect and deprivation and concurrent relational experiences at the institution...
August 14, 2017: Attachment & Human Development
https://www.readbyqxmd.com/read/28803341/gypsy-moth-herbivory-induced-volatiles-and-reduced-parasite-attachment-to-cranberry-hosts
#13
Muvari C Tjiurutue, Hilary A Sandler, Monica F Kersch-Becker, Nina Theis, Lynn S Adler
Interactions between species can have cascading effects that shape subsequent interactions. For example, herbivory can induce plant defenses that affect subsequent interactions with herbivores, pathogens, mycorrhizae, and pollinators. Parasitic plants are present in most ecosystems, and play important roles in structuring communities. However, the effects of host herbivory on parasitic plants, and the potential mechanisms underlying such effects, are not well known. We conducted a greenhouse study to ask whether gypsy moth (Lymantria dispar) damage, host cultivar, and their interaction affected preference of the stem parasite dodder (Cuscuta spp...
August 12, 2017: Oecologia
https://www.readbyqxmd.com/read/28803040/attachment-and-thought-problems-in-an-adolescent-inpatient-sample-the-mediational-role-of-theory-of-mind
#14
Jessica R Hart, Amanda Venta, Carla Sharp
BACKGROUND: Previous research has documented increased incidence of insecure attachment and theory of mind (ToM) deficits in individuals experiencing psychotic disorders. ToM has been theorized as a possible mediator of the relation between attachment and psychosis (Korver-Nieberg et al., 2014). The current study sought to extend this area of research to adolescents for the first time by examining adolescent-parent attachment and ToM in inpatient adolescents. METHODS: Participants were 362 inpatient adolescents and their parents; participants completed the Child Attachment Interview, Movie for the Assessment of Social Cognition, Youth Self Report, and Child Behavior Checklist...
July 13, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28803016/association-between-ambient-temperature-and-humidity-vaginal-temperature-and-automatic-activity-monitoring-on-induced-estrus-in-lactating-cows
#15
Liam B Polsky, Augusto M L Madureira, Eraldo L Drago Filho, Sergio Soriano, Alex F Sica, José L M Vasconcelos, Ronaldo L A Cerri
The objective of this study was to determine the association between ambient temperature and humidity, vaginal temperature, and automated activity monitoring in synchronized cows. Lactating Holstein cows (n = 641; 41.5 ± 9.4 kg of milk/d) were fitted with leg-mounted pedometers, resulting in 843 evaluated activity episodes of estrus. Vaginal temperature was monitored using thermometers attached to an intravaginal device as part of a timed artificial insemination (TAI) protocol; vaginal temperature was recorded every 10 min for 3 d...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28802715/elucidating-virus-entry-using-a-tetracysteine-tagged-virus
#16
REVIEW
Bjorn-Patrick Mohl, Polly Roy
Fluorescent tags constitute an invaluable tool in facilitating a deeper understanding of the mechanistic processes governing virus-host interactions. However, when selecting a fluorescent tag for in vivo imaging of cells, a number of parameters and aspects must be considered. These include whether the tag may affect and interfere with protein conformation or localization, cell toxicity, spectral overlap, photo-stability and background. Cumulatively, these constitute challenges to be overcome. Bluetongue virus (BTV), a member of the Orbivirus genus in the Reoviridae family, is a non-enveloped virus that is comprised of two architecturally complex capsids...
August 9, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28800750/angiopoietin-1-deficiency-increases-tumor-metastasis-in-mice
#17
Iacovos P Michael, Martina Orebrand, Marta Lima, Beatriz Pereira, Olga Volpert, Susan E Quaggin, Marie Jeansson
BACKGROUND: Angipoietin-1 activation of the tyrosine kinase receptor Tek expressed mainly on endothelial cells leads to survival and stabilization of endothelial cells. Studies have shown that Angiopoietin-1 counteracts permeability induced by a number of stimuli. Here, we test the hypothesis that loss of Angiopoietin-1/Tek signaling in the vasculature would increase metastasis. METHODS: Angiopoietin-1 was deleted in mice just before birth using floxed Angiopoietin-1 and Tek mice crossed to doxycycline-inducible bitransgenic ROSA-rtTA/tetO-Cre mice...
August 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28799855/surgical-management-of-cervical-spine-deformity-in-chondrodysplasia-punctata
#18
Nobuhito Morota, Satoshi Ihara, Hideki Ogiwara, Goichiro Tamura
OBJECTIVE Chondrodysplasia punctata (CDP), a rare skeletal dysplasia, can lead to cervical spine instability and deformity. However, an optimal neurosurgical intervention has yet to be established. Thus, a retrospective study was conducted to assess the efficacy of various surgical interventions for children with CDP. METHODS The authors retrospectively reviewed 9 cases of CDP in which cervical decompression with or without posterior fusion was performed between April 2007 and May 2016. Patient demographics, preoperative clinical conditions, radiographic findings, surgical procedures, and the postoperative course were analyzed in detail...
August 11, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28799193/an-analysis-of-the-effects-of-intrapartum-factors-neonatal-characteristics-and-skin-to-skin-contact-on-early-breastfeeding-initiation
#19
Ying Lau, Pyai Htun Tha, Sarah Su Tin Ho-Lim, Lai Ying Wong, Peng Im Lim, Binte Zaini Mattar Citra Nurfarah, Shefaly Shorey
This study aims to determine relationships between intrapartum factors, neonatal characteristics, skin-to-skin contact (SSC), and early breastfeeding initiation after spontaneous vaginal and Caesarean section or operative vaginal birth. A total of 915 mother-newborn dyads were considered in a hypothetical model based on integrated concepts of breastfeeding initiation model, infant learning framework, and attachment theory. Multiple-group path analysis was used to determine whether differences exist between effects of immediate SSC (≤30 min) on early breastfeeding initiation in different modes of birth...
August 10, 2017: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/28798904/tick-borne-viruses-and-biological-processes-at-the-tick-host-virus-interface
#20
REVIEW
Mária Kazimírová, Saravanan Thangamani, Pavlína Bartíková, Meghan Hermance, Viera Holíková, Iveta Štibrániová, Patricia A Nuttall
Ticks are efficient vectors of arboviruses, although less than 10% of tick species are known to be virus vectors. Most tick-borne viruses (TBV) are RNA viruses some of which cause serious diseases in humans and animals world-wide. Several TBV impacting human or domesticated animal health have been found to emerge or re-emerge recently. In order to survive in nature, TBV must infect and replicate in both vertebrate and tick cells, representing very different physiological environments. Information on molecular mechanisms that allow TBV to switch between infecting and replicating in tick and vertebrate cells is scarce...
2017: Frontiers in Cellular and Infection Microbiology
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