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https://www.readbyqxmd.com/read/28719579/using-primate-neural-stem-cells-cultured-in-self-assembling-peptide-nanofiber-scaffolds-to-repair-injured-spinal-cords-in-rats
#1
J-C Ye, Y Qin, Y-F Wu, P Wang, Y Tang, L Huang, M-J Ma, Y-S Zeng, H-Y Shen
This corrects the article DOI: 10.1038/sc.2016.36.
July 18, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28717965/genomic-properties-of-chromosomal-bands-are-linked-to-evolutionary-rearrangements-and-new-centromere-formation-in-primates
#2
Concetta Federico, Anna Maria Pappalardo, Venera Ferrito, Sabrina Tosi, Salvatore Saccone
Chromosomal rearrangements in humans are largely related to pathological conditions, and phenotypic effects are also linked to alterations in the expression profile following nuclear relocation of genes between functionally different compartments, generally occupying the periphery or the inner part of the cell nuclei. On the other hand, during evolution, chromosomal rearrangements may occur apparently without damaging phenotypic effects and are visible in currently phylogenetically related species. To increase our insight into chromosomal reorganisation in the cell nucleus, we analysed 18 chromosomal regions endowed with different genomic properties in cell lines derived from eight primate species covering the entire evolutionary tree...
July 17, 2017: Chromosome Research
https://www.readbyqxmd.com/read/28717883/first-postpubertal-male-same-sex-sexual-experience-in-the-national-health-and-social-life-survey-current-functioning-in-relation-to-age-at-time-of-experience-and-partner-age
#3
Bruce Rind
This study used an important data set to examine long-term adjustment and functioning in men, who as adolescents had sexual experiences with men. The data came from the National Health and Social Life Survey, which used a national probability sample (Laumann, Gagnon, Michael, & Michaels, 1994). Three perspectives were considered, which offered different predictions. From the "child sexual abuse" (CSA) paradigm, which dominates clinical, legal, and lay views, expected was robust evidence for poorer adjustment, given that intense harm is assumed to be intrinsic...
July 17, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28716961/the-structural-basis-of-large-scale-functional-connectivity-in-the-mouse
#4
Joanes Grandjean, Valerio Zerbi, Joshua Balsters, Nicole Wenderoth, Markus Rudina
Translational neuroimaging requires approaches and techniques that can bridge between multiple different species and disease states. One candidate method, which offers insights into the brain's functional connectivity (FC), is resting state fMRI (rs-fMRI). In both humans and non-human primates, patterns of functional connectivity (often referred to as the functional connectome) have been related to the underlying structural connectivity (structural connectome). Given the recent rise in pre-clinical neuroimaging of mouse models it is an important question whether the mouse functional connectome conforms to the underlying structural connectivity...
July 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28716936/bacterial-infection-imaging-with-18-f-fluoropropyl-trimethoprim
#5
Mark A Sellmyer, Iljung Lee, Catherine Hou, Chi-Chang Weng, Shihong Li, Brian P Lieberman, Chenbo Zeng, David A Mankoff, Robert H Mach
There is often overlap in the diagnostic features of common pathologic processes such as infection, sterile inflammation, and cancer both clinically and using conventional imaging techniques. Here, we report the development of a positron emission tomography probe for live bacterial infection based on the small-molecule antibiotic trimethoprim (TMP). [(18)F]fluoropropyl-trimethoprim, or [(18)F]FPTMP, shows a greater than 100-fold increased uptake in vitro in live bacteria (Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa) relative to controls...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28716893/which-dengue-vaccine-approach-is-the-most-promising-and-should-we-be-concerned-about-enhanced-disease-after-vaccination-there-is-only-one-true-winner
#6
Scott B Halstead
The scientific community now possesses information obtained directly from human beings that makes it possible to understand why breakthrough-enhanced dengue virus (DENV) infections occurred in children receiving Sanofi Pasteur's Dengvaxia tetravalent live attenuated vaccine and to predict the possibility of breakthrough-enhanced DENV infections following immunization with two other tetravalent live attenuated vaccines now in phase III testing. Based upon recent research, Dengvaxia, lacking DENV nonstructural protein antigens, did not protect seronegatives because it failed to raise a competent T-cell response and/or antibodies to NS1...
July 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28715767/non-human-primates-as-a-model-for-understanding-the-mechanism-of-action-of-toll-like-receptor-based-vaccine-adjuvants
#7
REVIEW
Elizabeth A Thompson, Karin Loré
While transgenic mouse models are powerful for understanding how the immune system is manipulated by vaccines, they cannot fully recapitulate the characteristics of the innate immune responses leading to adaptive immunity after vaccination in humans. Outbred non-human primates are far more representative models of human vaccine responses as there is high degree of similarities in immune cell subset distributions, receptor expression (including toll-like receptors; TLRs), and immune cell functions, in addition to modeling doses and injection sites more accurately...
July 14, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28714241/cytokine-profiles-in-tibetan-macaques-following-%C3%AE-1-3-galactosyltransferase-knockout-pig-liver-xenotransplantation
#8
Zhuochao Zhang, Xiao Li, Hong Zhang, Xuan Zhang, Hui Chen, Dengke Pan, Hongchen Ji, Liang Zhou, Juan Ling, Jingshi Zhou, Shuqiang Yue, Desheng Wang, Zhaoxu Yang, Kaishan Tao, Kefeng Dou
BACKGROUND: Pig-to-nonhuman primate orthotopic liver xenotransplantation is often accompanied by thrombocytopenia and coagulation disorders. Furthermore, the release of cytokines can trigger cascade reactions of coagulation and immune attacks within transplant recipients. To better elucidate the process of inflammation in liver xenograft recipients, we utilized a modified heterotopic auxiliary liver xenotransplantation model for xeno-immunological research. We studied the cytokine profiles and the relationship between cytokine levels and xenograft function after liver xenotransplantation...
July 17, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28712672/noise-induced-cochlear-synaptopathy-in-rhesus-monkeys-macaca-mulatta
#9
M D Valero, J A Burton, S N Hauser, T A Hackett, R Ramachandran, M C Liberman
Cochlear synaptopathy can result from various insults, including acoustic trauma, aging, ototoxicity, or chronic conductive hearing loss. For example, moderate noise exposure in mice can destroy up to ∼50% of synapses between auditory nerve fibers (ANFs) and inner hair cells (IHCs) without affecting outer hair cells (OHCs) or thresholds, because the synaptopathy occurs first in high-threshold ANFs. However, the fiber loss likely impairs temporal processing and hearing-in-noise, a classic complaint of those with sensorineural hearing loss...
July 8, 2017: Hearing Research
https://www.readbyqxmd.com/read/28712469/subcortical-contributions-to-motor-speech-phylogenetic-developmental-clinical
#10
REVIEW
W Ziegler, H Ackermann
Vocal learning is an exclusively human trait among primates. However, songbirds demonstrate behavioral features resembling human speech learning. Two circuits have a preeminent role in this human behavior; namely, the corticostriatal and the cerebrocerebellar motor loops. While the striatal contribution can be traced back to the avian anterior forebrain pathway (AFP), the sensorimotor adaptation functions of the cerebellum appear to be human specific in acoustic communication. This review contributes to an ongoing discussion on how birdsong translates into human speech...
July 13, 2017: Trends in Neurosciences
https://www.readbyqxmd.com/read/28712361/plasmodium-knowlesi-a-superb-in-vivo-nonhuman-primate-model-of-antigenic-variation-in-malaria
#11
M R Galinski, S A Lapp, M S Peterson, F Ay, C J Joyner, K G LE Roch, L L Fonseca, E O Voit
Antigenic variation in malaria was discovered in Plasmodium knowlesi studies involving longitudinal infections of rhesus macaques (M. mulatta). The variant proteins, known as the P. knowlesi Schizont Infected Cell Agglutination (SICA) antigens and the P. falciparum Erythrocyte Membrane Protein 1 (PfEMP1) antigens, expressed by the SICAvar and var multigene families, respectively, have been studied for over 30 years. Expression of the SICA antigens in P. knowlesi requires a splenic component, and specific antibodies are necessary for variant antigen switch events in vivo...
July 17, 2017: Parasitology
https://www.readbyqxmd.com/read/28711711/three-dimensional-kinematic-and-kinetic-analysis-of-quadrupedal-walking-in-the-common-marmoset-callithrix-jacchus
#12
Hikaru Shimada, Ryogo Kanai, Takahiro Kondo, Kimika Yoshino-Saito, Akito Uchida, Masaya Nakamura, Junichi Ushiba, Hideyuki Okano, Naomichi Ogihara
The common marmoset has recently gained a great deal of attention as an experimental primate model for biological science and medical research. To use the common marmoset for development of novel treatments and rehabilitation for locomotor disorders, it is crucial to understand fundamental baseline characteristics of locomotion in this species. Therefore, in the present study we performed kinematic and kinetic analyses of quadrupedal locomotion in this animal. A total of 14 common marmosets walking quadrupedally along a walkway were analyzed using synchronized high-speed cameras, with two force platforms set in the walkway...
July 12, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28710608/vaccine-platform-recombinant-measles-virus
#13
REVIEW
Michael D Mühlebach
The classic development of vaccines is lengthy, tedious, and may not necessarily be successful as demonstrated by the case of HIV. This is especially a problem for emerging pathogens that are newly introduced into the human population and carry the inherent risk of pandemic spread in a naïve population. For such situations, a considerable number of different platform technologies are under development. These are also under development for pathogens, where directly derived vaccines are regarded as too complicated or even dangerous due to the induction of inefficient or unwanted immune responses causing considerable side-effects as for dengue virus...
July 14, 2017: Virus Genes
https://www.readbyqxmd.com/read/28710326/cortical-influences-drive-amyotrophic-lateral-sclerosis
#14
REVIEW
Andrew Eisen, Heiko Braak, Kelly Del Tredici, Roger Lemon, Albert C Ludolph, Matthew C Kiernan
The early motor manifestations of sporadic amyotrophic lateral sclerosis (ALS), while rarely documented, reflect failure of adaptive complex motor skills. The development of these skills correlates with progressive evolution of a direct corticomotoneuronal system that is unique to primates and markedly enhanced in humans. The failure of this system in ALS may translate into the split hand presentation, gait disturbance, split leg syndrome and bulbar symptomatology related to vocalisation and breathing, and possibly diffuse fasciculation, characteristic of ALS...
July 14, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28710037/rna-editing-independently-occurs-at-three-mir-376a-1-sites-and-may-compromise-the-stability-of-the-microrna-hairpin
#15
Alicia Gallego, Diego A Hartasánchez, Marina Brasó-Vives, Eva Garcia-Ramallo, Maria Lopez-Valenzuela, Neus Baena, Miriam Guitart, Hugo Fernández-Bellon, Ivanela Kondova, Ronald Bontrop, Yukio Kawahara, Yolanda Espinosa-Parrilla
RNA editing is being recognized as an important post-transcriptional mechanism that may have crucial roles in introducing genetic variation and phenotypic diversity. Despite microRNA editing recurrence, defining its biological relevance is still under extended debate. To better understand microRNA editing function and regulation we performed an exhaustive characterization of the A-to-I site-specific patterns in mir-376a-1, a mammalian microRNA which RNA editing is involved in the regulation of development and in disease...
July 11, 2017: Gene
https://www.readbyqxmd.com/read/28709986/comparison-of-different-strategies-for-using-fossil-calibrations-to-generate-the-time-prior-in-bayesian-molecular-clock-dating
#16
Jose Barba-Montoya, Mario Dos Reis, Ziheng Yang
Fossil calibrations are the utmost source of information for resolving the distances between molecular sequences into estimates of absolute times and absolute rates in molecular clock dating analysis. The quality of calibrations is thus expected to have a major impact on divergence time estimates even if a huge amount of molecular data is available. In Bayesian molecular clock dating, fossil calibration information is incorporated in the analysis through the prior on divergence times (the time prior). Here, we evaluate three strategies for converting fossil calibrations (in the form of minimum- and maximum-age bounds) into the prior on times, which differ according to whether they borrow information from the maximum age of ancestral nodes and minimum age of descendent nodes to form constraints for any given node on the phylogeny...
July 11, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28709783/role-of-the-lateral-habenula-in-memory-through-online-processing-of-information
#17
REVIEW
Victor Mathis, Lucas Lecourtier
Our memory abilities, whether they involve short-term working memory or long-term episodic or procedural memories, are essential for our well-being, our capacity to adapt to constraints of our environment and survival. Therefore, several key brain regions and neurotransmitter systems are engaged in the processing of sensory information to either maintain such information in working memory so that it will quickly be used, and/or participate in the elaboration and storage of enduring traces useful for longer periods of time...
July 11, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28708995/evolution-of-the-human-nervous-system-function-structure-and-development
#18
REVIEW
André M M Sousa, Kyle A Meyer, Gabriel Santpere, Forrest O Gulden, Nenad Sestan
The nervous system-in particular, the brain and its cognitive abilities-is among humans' most distinctive and impressive attributes. How the nervous system has changed in the human lineage and how it differs from that of closely related primates is not well understood. Here, we consider recent comparative analyses of extant species that are uncovering new evidence for evolutionary changes in the size and the number of neurons in the human nervous system, as well as the cellular and molecular reorganization of its neural circuits...
July 13, 2017: Cell
https://www.readbyqxmd.com/read/28705975/draft-genome-sequence-of-plasmodium-gonderi-a-malaria-parasite-of-african-old-world-monkeys
#19
Hajime Honma, Satoru Kawai, Daisuke Motooka, Shota Nakamura, Takahiro Tougan, Toshihiro Horii, Nobuko Arisue
Plasmodium gonderi is a primate parasite whose natural host is the African Old World monkeys. Here, we report the draft genome sequence for P. gonderi The data are useful not only for understanding the evolution of malaria but also for allowing the comparative genomics of malaria parasites.
July 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28704402/are-disease-reservoirs-special-taxonomic-and-life-history-characteristics
#20
Benjamin T Plourde, Tristan L Burgess, Evan A Eskew, Tara M Roth, Nicole Stephenson, Janet E Foley
Pathogens that spill over between species cause a significant human and animal health burden. Here, we describe characteristics of animal reservoirs that are required for pathogen spillover. We assembled and analyzed a database of 330 disease systems in which a pathogen spills over from a reservoir of one or more species. Three-quarters of reservoirs included wildlife, and 84% included mammals. Further, 65% of pathogens depended on a community of reservoir hosts, rather than a single species, for persistence...
2017: PloS One
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