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https://www.readbyqxmd.com/read/28229193/osseointegrated-prostheses-for-rehabilitation-following-amputation-the-pioneering-swedish-model
#1
Yan Li, Rickard Brånemark
The direct attachment of osseointegrated (OI) prostheses to the skeleton avoids the inherent problems of socket suspension. It also provides physiological weight bearing, improved range of motion in the proximal joint, as well as osseoperceptive sensory feedback, enabling better control of the artificial limbs by amputees. The present article briefly reviews the pioneering efforts on extremity osseointegration surgeries in Sweden and the development of the OPRA (Osseointegrated Prostheses for the Rehabilitation of Amputees) program...
February 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28227362/signal-source-estimation-inside-the-human-heart-during-ventricular-activation-using-switching-voltage-divider
#2
Yusuke Sakaue, Masaaki Makikawa, Yusuke Sakaue, Masaaki Makikawa, Masaaki Makikawa, Yusuke Sakaue
A novel signal source estimation method using switching voltage divider technology was developed in our previous works. The aim of this method is to reduce the number of electrodes required for signal source estimation. Using this method, voltage and position information about the signal source inside the human body can be obtained simultaneously. The purpose of this paper is to estimate the changes in the signal source location according to ventricular activation. One healthy male (31 years old) participated in an ECG measurement experiment that utilized switching voltage divider technology...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224420/early-osseointegration-of-implants-with-cortex-like-tio2-coatings-formed-by-micro-arc-oxidation-a-histomorphometric-study-in-rabbits
#3
Hong-Zhi Zhou, Ya-da Li, Lin Liu, Xiao-Dong Chen, Wei-Qiang Wang, Guo-Wu Ma, Yu-Cheng Su, Min Qi, Bin Shi
In our previous studies, a novel cortex-like TiO2 coating was prepared on Ti surface through micro-arc oxidation (MAO) by using sodium tetraborate as electrolyte, and the effects of the coating on cell attachment were testified. This study aimed to investigate the effects of this cortex-like MAO coating on osseointegration. A sand-blasting and acid-etching (SLA) coating that has been widely used in clinical practice served as control. Topographical and chemical characterizations were conducted by scanning electron microscopy, energy dispersive X-ray spectrometer, X-ray diffraction, contact angle meter, and step profiler...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28222169/decellularized-wharton-s-jelly-from-human-umbilical-cord-as-a-novel-3d-scaffolding-material-for-tissue-engineering-applications
#4
Sushma Jadalannagari, Gabriel Converse, Christopher McFall, Eric Buse, Michael Filla, Maria T Villar, Antonio Artigues, Adam J Mellot, Jinxi Wang, Michael S Detamore, Richard A Hopkins, Omar S Aljitawi
In tissue engineering, an ideal scaffold attracts and supports cells thus providing them with the necessary mechanical support and architecture as they reconstruct new tissue in vitro and in vivo. This manuscript details a novel matrix derived from decellularized Wharton's jelly (WJ) obtained from human umbilical cord for use as a scaffold for tissue engineering application. This decellularized Wharton's jelly matrix (DWJM) contained 0.66 ± 0.12 μg/mg sulfated glycosaminoglycans (GAGs), and was abundant in hyaluronic acid, and completely devoid of cells...
2017: PloS One
https://www.readbyqxmd.com/read/28222055/ex-situ-perfusion-of-human-limb-allografts-for-24-hours
#5
Nicole L Werner, Fares Alghanem, Stephanie L Rakestraw, Dylan C Sarver, Bruce Nicely, Richard E Pietroski, Paul Lange, Steven M Rudich, Christopher L Mendias, Alvaro Rojas-Pena, John C Magee, Robert H Bartlett, Kagan Ozer
BACKGROUND: Vascularized composite allografts, particularly hand and forearm, have limited ischemic tolerance after procurement. In bilateral hand transplantations, this demands a 2 team approach and expedited transfer of the allograft, limiting the recovery to a small geographic area. Ex situ perfusion may be an alternative allograft preservation method to extend allograft survival time. This is a short report of 5 human limbs maintained for 24 hours with ex situ perfusion. METHODS: Upper limbs were procured from brain-dead organ donors...
March 2017: Transplantation
https://www.readbyqxmd.com/read/28220619/the-palatal-interpterygoid-vacuities-of-temnospondyls-and-the-implications-for-the-associated-eye-and-jaw-musculature
#6
Florian Witzmann, Ingmar Werneburg
A diagnostic feature of temnospondyls is the presence of an open palate with large interpterygoid vacuities, unlike the closed palate of most other early tetrapods, in which the vacuities are either slit-like or completely absent. Attachment sites on neurocranium and palatal bones in temnospondyls allow the reconstruction of a powerful m. retractor bulbi and a large, sheet-like m. levator bulbi that formed the elastic floor of the orbit. This muscle arrangement indicates that temnospondyls were able to retract the eyeballs through the interpterygoid vacuities into the buccal cavity, like extant frogs and salamanders...
February 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28220268/anterolateral-ligament-expert-group-consensus-paper-on-the-management-of-internal-rotation-and-instability-of-the-anterior-cruciate-ligament-deficient-knee
#7
REVIEW
Bertrand Sonnery-Cottet, Matthew Daggett, Jean-Marie Fayard, Andrea Ferretti, Camilo Partezani Helito, Martin Lind, Edoardo Monaco, Vitor Barion Castro de Pádua, Mathieu Thaunat, Adrian Wilson, Stefano Zaffagnini, Jacco Zijl, Steven Claes
Purpose of this paper is to provide an overview of the latest research on the anterolateral ligament (ALL) and present the consensus of the ALL Expert Group on the anatomy, radiographic landmarks, biomechanics, clinical and radiographic diagnosis, lesion classification, surgical technique and clinical outcomes. A consensus on controversial subjects surrounding the ALL and anterolateral knee instability has been established based on the opinion of experts, the latest publications on the subject and an exchange of experiences during the ALL Experts Meeting (November 2015, Lyon, France)...
February 20, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28218405/electricity-generation-by-pyrococcus-furiosus-in-microbial-fuel-cells-operated-at-90-%C3%A2-c
#8
Narendran Sekar, Chang-Hao Wu, Michael W W Adams, Ramaraja P Ramasamy
Hyperthermophiles are microorganisms that thrive in extremely hot environments with temperatures near and even above 100 (°) C. They are the most deeply rooted microorganisms on phylogenetic trees suggesting they may have evolved to survive in the early hostile earth. The simple respiratory systems of some of these hyperthermophiles made them potential candidates to develop microbial fuel cells (MFC) that can generate power at temperatures approaching the boiling point. We explored extracellular electron transfer ability of a hyperthermophilic archaeon Pyrococcus furiosus (Pf) by studying its ability to generate electricity in a two-chamber MFC...
February 20, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28215549/caregiver-communication-to-the-child-as-moderator-and-mediator-of-genes-for-language
#9
Luca Onnis
Human language appears to be unique among natural communication systems, and such uniqueness impinges on both nature and nurture. Human babies are endowed with cognitive abilities that predispose them to learn language, and this process cannot operate in an impoverished environment. To be effectively complete the acquisition of human language in human children requires highly socialised forms of learning, scaffolded over years of prolonged and intense caretaker-child interactions. How genes and environment operate in shaping language is unknown...
February 16, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28213745/perceptions-of-parent-child-attachment-relationships-and-friendship-qualities-predictors-of-romantic-relationship-involvement-and-quality-in-adolescence
#10
Logan B Kochendorfer, Kathryn A Kerns
Relationships with parents and friends are important contexts for developing romantic relationship skills. Parents and friends may influence both the timing of involvement and the quality of romantic relationships. Three models of the joint influence of parents and friends (direct effects model, mediation model, and moderator model) have been proposed. The present study uses data from a longitudinal study (n = 1012; 49.8% female; 81.1% Caucasian) to examine how attachment and friendship quality at age 10 years predict romantic relationship involvement and quality at ages 12 and 15 years...
February 17, 2017: Journal of Youth and Adolescence
https://www.readbyqxmd.com/read/28213347/a-new-cheirolepidiaceae-coniferales-from-the-early-jurassic-of-patagonia-argentina-reconciling-the-records-of-impression-and-permineralized-fossils
#11
Ignacio Escapa, Andrew Leslie
PREMISE OF THE STUDY: Plants preserved in different fossil modes provide complementary data concerning the paleobiology and evolutionary relationships among plant groups. New material from the Early Jurassic of Patagonia shows the importance of combining these sources of information, as we describe the first compression/impression fossils of Pararaucaria, a genus of the extinct conifer family Cheirolepidiaceae previously known from permineralized fossils. These fossils extend the temporal range of this genus and may allow its wider recognition in the fossil record...
February 17, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28208707/gaitkeeper-a-system-for-measuring-canine-gait
#12
Cassim Ladha, Jack O'Sullivan, Zoe Belshaw, Lucy Asher
It is understood gait has the potential to be used as a window into neurodegenerative disorders, identify markers of subclinical pathology, inform diagnostic algorithms of disease progression and measure the efficacy of interventions. Dogs' gaits are frequently assessed in a veterinary setting to detect signs of lameness. Despite this, a reliable, affordable and objective method to assess lameness in dogs is lacking. Most described canine lameness assessments are subjective, unvalidated and at high risk of bias...
February 8, 2017: Sensors
https://www.readbyqxmd.com/read/28202409/effects-of-bonding-with-parents-and-home-culture-on-intercultural-adaptations-and-the-moderating-role-of-genes
#13
Desiree Y Phua, Michael J Meaney, Chiea Chuen Khor, Ivy Y M Lau, Ying-Yi Hong
In the current age of globalization, living abroad is becoming an increasingly common and highly sought after experience. Sojourners' ability to adjust to a new culture can be affected by their existing attachments, internalized as intrapsychic environment, as well as their biological sensitivity to environment. This sensitivity can be partly attributed to one's genomic endowments. As such, this prospective study sought to examine the differential effects of early experiences with parents and affection for home culture on young adults' ability to adapt to a foreign culture (n=305, students who studied overseas for a semester) - specifically, the difficulties they experience - moderated by genetic susceptibility...
February 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28202182/implantation-and-extravillous-trophoblast-invasion-from-rare-archival-specimens-to-modern-biobanking
#14
Gerit Moser, Berthold Huppertz
Extravillous trophoblast invasion serves to attach the placenta to the uterus and to enable access to nutrients for the embryo throughout pregnancy - secretions of the uterine glands in the first trimester, maternal blood in the second and third trimester. For assessing extravillous trophoblast invasion, histology (in combination with immunohistochemistry) still plays a major role in placental research. This is especially true for the re-assessment of rare archival specimens from early human implantation sites or placenta in utero with the background of recent knowledge which may help to strengthen current hypotheses...
February 8, 2017: Placenta
https://www.readbyqxmd.com/read/28202061/in-vitro-generation-of-sertoli-like-and-haploid-spermatid-like-cells-from-human-umbilical-cord-perivascular-cells
#15
Ekaterina Shlush, Leila Maghen, Sonja Swanson, Shlomit Kenigsberg, Sergey Moskovtsev, Tanya Barretto, Andrée Gauthier-Fisher, Clifford L Librach
BACKGROUND: First trimester (FTM) and term human umbilical cord-derived perivascular cells (HUCPVCs), which are rich sources of mesenchymal stem cells (MSCs), can give rise to Sertoli cell (SC)-like as well as haploid germ cell (GC)-like cells in vitro using culture conditions that recapitulate the testicular niche. Gamete-like cells have been produced ex vivo using pluripotent stem cells as well as MSCs. However, the production of functional gametes from human stem cells has yet to be achieved...
February 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28198348/down-regulation-of-pe11-a-cell-wall-associated-esterase-enhances-the-biofilm-growth-of-mycobacterium-tuberculosis-and-reduces-cell-wall-virulence-lipid-levels
#16
Shivangi Rastogi, Amit Kumar Singh, Garima Pant, Kalyan Mitra, Koneni V Sashidhara, Manju Y Krishnan
PE11 (Rv1169c or LipX) is a cell wall associated esterase/lipase of Mycobacterium tuberculosis (Mtb). Evidences suggest that PE11 is expressed by Mtb both in vitro and in vivo. Previous studies have shown that PE11 leads to modification in cell wall lipid content and enhanced virulence when expressed in the non-pathogenic surrogate Mycobacterium smegmatis. Since cell wall lipids often play different roles in pathogenic and non-pathogenic mycobacteria, we investigated the role of PE11 in its host, Mtb. Mtb with lowered expression of PE11 (PE11 knock-down) displayed significant changes in colony morphology and cell wall lipid profile, confirming the role of PE11 in cell wall architecture...
January 2017: Microbiology
https://www.readbyqxmd.com/read/28194281/effects-of-father-neonate-skin-to-skin-contact-on-attachment-a-randomized-controlled-trial
#17
Er-Mei Chen, Meei-Ling Gau, Chieh-Yu Liu, Tzu-Ying Lee
This study examines how skin-to-skin contact between father and newborn affects the attachment relationship. A randomized controlled trial was conducted at a regional teaching hospital and a maternity clinic in northern Taiwan. The study recruited 83 first-time fathers aged 20 years or older. By block randomization, participants were allocated to an experimental (n = 41) or a control (n = 42) group. With the exception of skin-to-skin contact (SSC), participants from each group received the same standard care...
2017: Nursing Research and Practice
https://www.readbyqxmd.com/read/28193876/vulnerability-of-primitive-human-placental-trophoblast-to-zika-virus
#18
Megan A Sheridan, Dinar Yunusov, Velmurugan Balaraman, Andrei P Alexenko, Shinichiro Yabe, Sergio Verjovski-Almeida, Danny J Schust, Alexander W Franz, Yoel Sadovsky, Toshihiko Ezashi, R Michael Roberts
Infection of pregnant women by Asian lineage strains of Zika virus (ZIKV) has been linked to brain abnormalities in their infants, yet it is uncertain when during pregnancy the human conceptus is most vulnerable to the virus. We have examined two models to study susceptibility of human placental trophoblast to ZIKV: cytotrophoblast and syncytiotrophoblast derived from placental villi at term and colonies of trophoblast differentiated from embryonic stem cells (ESC). The latter appear to be analogous to the primitive placenta formed during implantation...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28192006/does-marital-conflict-predict-infants-physiological-regulation-a-short-term-prospective-study
#19
Christin L Porter, W Justin Dyer
Prior research has linked marital conflict to children's internalizing/externalizing disorders, insecure attachment, and poor emotional regulation (e.g., Cummings & Davies, 2010; Cummings, Iannotti, & Zahn-Waxler, 1985). Although investigators have examined the impact of marital discord on older children (e.g., Crockenberg & Langrock, 2001), few have explored direct links in infancy (e.g., Cowan & Cowan, 1999). This study extends earlier work by examining linkages between marital functioning (conflict and harmony) and infants' cardiac vagal tone and developmental status across 2 time points using a cross-lag approach...
February 13, 2017: Journal of Family Psychology: JFP
https://www.readbyqxmd.com/read/28188654/dry-matter-yield-chemical-composition-and-estimated-extractable-protein-of-legume-and-grass-species-during-the-spring-growth
#20
Zeinab Solati, Uffe Jørgensen, Jørgen Eriksen, Karen Søegaard
BACKGROUND: Knowledge of the variation of extractable protein amount in legumes and grasses as affected by harvest time is important for identifying optimal combinations to enable a high protein production in a bioefinery. The extractability of protein was estimated using the Cornell Net Carbohydrate and Protein System across six harvests during the spring growth. RESULTS: The estimated extractable protein (g CP kg(-1) DM) defined as the easily available fractions B1 +B2 was significantly higher in white clover and lucerne at all harvests whilst if the more cell wall attached fraction B3 can be extracted, white clover had the highest extractable protein amongst all species...
February 11, 2017: Journal of the Science of Food and Agriculture
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