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https://www.readbyqxmd.com/read/28821995/expression-of-the-pol-gene-of-human-endogenous-retroviruses-herv-k-and-w-in-leukemia-patients
#1
Massimiliano Bergallo, Paola Montanari, Katia Mareschi, Chiara Merlino, Massimo Berger, Ilaria Bini, Valentina Daprà, Ilaria Galliano, Franca Fagioli
The human endogenous retroviruses (HERVs) are a family of endogenous retroviruses that integrated into the germ cell DNA of primates over 30 million years ago. HERV expression seems impaired in several diseases, ranging from autoimmune to neoplastic disorders. The purpose of this study was to evaluate the overall endogenous retroviral transcription profile in bone marrow (BM) samples. A total of 30 paediatric high-risk leukaemia patients (lymphoid and myeloid malignancies) were tested for HERVs virus gene expression...
August 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28821812/crows-rival-monkeys-in-cognitive-capacity
#2
Dmitry Balakhonov, Jonas Rose
The present study compares the 'bandwidth of cognition' between crows and primates. Working memory is the ability to maintain and manipulate information over short periods of time - a core component of cognition. The capacity of working memory is tightly limited, in humans correlated with individual intelligence and commonly used synonymously with cognitive capacity. Crows have remarkable cognitive skills and while birds and mammals share neural principles of working memory, its capacity has not been tested in crows...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821662/visual-receptive-field-heterogeneity-and-functional-connectivity-of-adjacent-neurons-in-primate-fronto-parietal-association-cortices
#3
Pooja Viswanathan, Andreas Nieder
The basic organization principles of the primary visual cortex (V1) are commonly assumed to also hold in the association cortex such that neurons within a cortical column share functional connectivity patterns and represent the same region of the visual field. We mapped the visual receptive fields (RFs) of neurons recorded at the same electrode in the ventral intraparietal area (VIP) and the lateral prefrontal cortex (PFC) of rhesus monkeys. We report that the spatial characteristics of visual receptive fields between adjacent neurons differed considerably, with increasing heterogeneity from VIP to PFC...
August 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28819261/modified-vaccinia-virus-ankara-preferentially-targets-antigen-presenting-cells-in-vitro-ex-vivo-and-in-vivo
#4
Arwen F Altenburg, Carolien E van de Sandt, Bobby W S Li, Ronan J MacLoughlin, Ron A M Fouchier, Geert van Amerongen, Asisa Volz, Rudi W Hendriks, Rik L de Swart, Gerd Sutter, Guus F Rimmelzwaan, Rory D de Vries
Modified Vaccinia virus Ankara (MVA) is a promising vaccine vector with an excellent safety profile. However, despite extensive pre-clinical and clinical testing, surprisingly little is known about the cellular tropism of MVA, especially in relevant animal species. Here, we performed in vitro, ex vivo and in vivo experiments with recombinant MVA expressing green fluorescent protein (rMVA-GFP). In both human peripheral blood mononuclear cells and mouse lung explants, rMVA-GFP predominantly infected antigen presenting cells...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819214/hiv-1-nef-induced-cardiotoxicity-through-dysregulation-of-autophagy
#5
Manish K Gupta, Rafal Kaminski, Brian Mullen, Jennifer Gordon, Tricia H Burdo, Joseph Y Cheung, Arthur M Feldman, Muniswamy Madesh, Kamel Khalili
Cardiovascular disease is a leading cause of co-morbidity in HIV-1 positive patients, even those in whom plasma virus levels are well-controlled. The pathogenic mechanism of HIV-1-associated cardiomyopathy is unknown, but has been presumed to be mediated indirectly, owing to the absence of productive HIV-1 replication in cardiomyocytes. We sought to investigate the effect of the HIV-1 auxiliary protein, Nef, which is suspected of extracellular release by infected CD4+ T cells on protein quality control and autophagy in cardiomyocytes...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819117/neuronal-encoding-of-self-and-others-head-rotation-in-the-macaque-dorsal-prefrontal-cortex
#6
M Lanzilotto, M Gerbella, V Perciavalle, C Lucchetti
Following gaze is a crucial skill, in primates, for understanding where and at what others are looking, and often requires head rotation. The neural basis underlying head rotation are deemed to overlap with the parieto-frontal attention/gaze-shift network. Here, we show that a set of neurons in monkey's Brodmann area 9/46dr (BA 9/46dr), which is involved in orienting processes and joint attention, becomes active during self head rotation and that the activity of these neurons cannot be accounted for by saccade-related activity (head-rotation neurons)...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818944/conversion-of-object-identity-to-object-general-semantic-value-in-the-primate-temporal-cortex
#7
Keita Tamura, Masaki Takeda, Rieko Setsuie, Tadashi Tsubota, Toshiyuki Hirabayashi, Kentaro Miyamoto, Yasushi Miyashita
At the final stage of the ventral visual stream, perirhinal neurons encode the identity of memorized objects through learning. However, it remains elusive whether and how object percepts alone, or concomitantly a nonphysical attribute of the objects ("learned"), are decoded from perirhinal activities. By combining monkey psychophysics with optogenetic and electrical stimulations, we found a focal spot of memory neurons where both stimulations led monkeys to preferentially judge presented objects as "already seen...
August 18, 2017: Science
https://www.readbyqxmd.com/read/28818716/positron-emission-tomography-pet-imaging-of-nicotine-induced-dopamine-release-in-squirrel-monkeys-using-18-f-fallypride
#8
Jennifer E Naylor, Takato Hiranita, Katelin S Matazel, Xuan Zhang, Merle G Paule, Amy K Goodwin
BACKGROUND: Nicotine, the principal psychoactive tobacco constituent, is thought to produce its reinforcing effects via actions within the mesolimbic dopamine (DA) system. The objective of the current study was to examine the effect of nicotine on DA D2/D3 receptor availability in the nonhuman primate brain with the use of the radioligand [(18)F]fallypride and positron emission tomography (PET). METHODS: Ten adult male squirrel monkeys were used in the current study...
August 8, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28818098/sex-chromosomes-drive-gene-expression-and-regulatory-dimorphisms-in-mouse-embryonic-stem-cells
#9
Rachael J Werner, Bryant M Schultz, Jacklyn M Huhn, Jaroslav Jelinek, Jozef Madzo, Nora Engel
BACKGROUND: Pre-implantation embryos exhibit sexual dimorphisms in both primates and rodents. To determine whether these differences reflected sex-biased expression patterns, we generated transcriptome profiles for six 40,XX, six 40,XY, and two 39,X mouse embryonic stem (ES) cells by RNA sequencing. RESULTS: We found hundreds of coding and non-coding RNAs that were differentially expressed between male and female cells. Surprisingly, the majority of these were autosomal and included RNA encoding transcription and epigenetic and chromatin remodeling factors...
August 17, 2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28817679/increased-half-life-and-enhanced-potency-of-fc-modified-human-pcsk9-monoclonal-antibodies-in-primates
#10
Yijun Shen, Hua Li, Li Zhao, Gang Li, Ben Chen, Qingsong Guo, Bei Gao, Jinsong Wu, Tong Yang, Li Jin, Yong Su
Blocking proprotein convertase subtilisin kexin type 9 (PCSK9) binding to low-density lipoprotein receptor (LDLR) can profoundly lower plasma LDL levels. Two anti-PCKS9 monoclonal antibodies (mAbs), alirocumab and evolocumab, were approved by the FDA in 2015. The recommended dose is 75 mg to 150 mg every two weeks for alirocumab and 140mg every two weeks or 420 mg once a month for evolocumab. This study attempted to improve the pharmacokinetic properties of F0016A, an IgG1 anti-PCKS9 mAb, to generate biologically superior molecules...
2017: PloS One
https://www.readbyqxmd.com/read/28817400/liver-xenotransplantation
#11
Madhukar S Patel, Nathan Louras, Parsia A Vagefi
PURPOSE OF REVIEW: There continues to be an inadequate organ supply and lack of effective temporary support, for patients with liver failure. The purpose of this review is to discuss recent progress in the field of orthotopic pig-to-nonhuman primate (NHP) liver xenotransplantation (LXT). RECENT FINDINGS: From 1968 to 2012, survival in pig-to-NHP LXT was limited to 9 days, initially due to hyperacute rejection which has been ameliorated through use of genetically engineered donor organs, but ultimately because of profound thrombocytopenia, thrombotic microangiopathy, and bleeding...
August 16, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28817277/discovery-and-characterization-of-r-6-neopentyl-2-pyridin-2-ylmethoxy-6-7-dihydropyrimido-2-1-c-1-4-oxazin-4-9h-one-pf-06462894-an-alkyne-lacking-metabotropic-glutamate-receptor-5-negative-allosteric-modulator-profiled-in-both-rat-and-non-human-primates
#12
Antonia F Stepan, Michelle M Claffey, Matthew R Reese, Gayatri Balan, Gabriela Barreiro, Jason Barricklow, Michael J Bohanon, Brian P Boscoe, Gregg D Cappon, Lois K Chenard, Julie Cianfrogna, Laigao Chen, Karen J Coffman, Susan E Drozda, Joshua R Dunetz, Somraj Ghosh, Xinjun Hou, Christopher Houle, Kapil Karki, John T Lazzaro, Jessica Y Mancuso, John M Marcek, Emily L Miller, Mark A Moen, Steven V O'Neil, Isao Sakurada, Marc Skaddan, Vinod Parikh, Deborah L Smith, Patrick E Trapa, Jamison B Tuttle, Patrick R Verhoest, Daniel P Walker, Annie C Won, Ann S Wright, Jessica Whritenour, Kenneth Zasadny, Margaret M Zaleska, Lei Zhang, Christopher L Shaffer
We previously observed a cutaneous type IV immune response in non-human primates (NHP) with the mGlu5 negative allosteric modulator (NAM) 7. To determine if this adverse event was chemotype- or mechanism-based, we evaluated a distinct series of mGlu5 NAMs. Increasing the sp(3) character of high-throughput screening hit 40 afforded a novel morpholinopyrimidone mGlu5 NAM series. Its prototype, (R)-6-neopentyl-2-(pyridin-2-ylmethoxy)-6,7-dihydropyrimido[2,1-c][1,4]oxazin-4(9H)-one (PF-06462894, 8), possessed favorable properties and a predicted low clinical dose (2 mg twice daily)...
August 17, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28816660/erratum-a-200-1380-khz-quadrifrequency-focused-ultrasound-transducer-for-neurostimulation-in-rodents-and-primates-transcranial-in-vitro-calibration-and-numerical-study-of-the-influence-of-skull-cavity
#13
Charlotte Constans, Thomas Deffieux, Pierre Pouget, Mickael Tanter, Jean-Francois Aubry
Presents correction in the paper "A 200 - 1380 kHz Quadrifrequency Focused Ultrasound Transducer For Neurostimulation In Rodents And Primates: Transcranial In Vitro Calibration And Numerical Study Of The Influence Of Skull Cavity", IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2017, vol. 64, no 4, p. 717-724.
August 14, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28816571/effects-of-flow-changes-on-radiotracer-binding-simultaneous-measurement-of-neuroreceptor-binding-and-cerebral-blood-flow-modulation
#14
Christin Y Sander, Joseph B Mandeville, Hsiao-Ying Wey, Ciprian Catana, Jacob M Hooker, Bruce R Rosen
The potential effects of changes in blood flow on the delivery and washout of radiotracers has been an ongoing question in PET bolus injection studies. This study provides practical insight into this topic by experimentally measuring cerebral blood flow (CBF) and neuroreceptor binding using simultaneous PET/MRI. Hypercapnic challenges (7% CO2) were administered to non-human primates in order to induce controlled increases in CBF, measured with pseudo-continuous arterial spin labeling. Simultaneously, dopamine D2/D3 receptor binding of [(11)C]raclopride or [(18)F]fallypride was monitored with dynamic PET...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28815964/sex-biased-dispersal-of-human-ancestors
#15
Yukimaru Sugiyama
Some anthropologists and primatologists have argued that, judging by extant chimpanzees and humans, which are female-biased dispersers, the common ancestors of humans and chimpanzees were also female-biased dispersers. It has been thought that sex-biased dispersal patterns have been genetically transmitted for millions of years. However, this character has changed many times with changes in environment and life-form during human evolution and historical times. I examined life-form and social organization of nonhuman primates, among them gatherers (foragers), hunter-gatherers, agriculturalists, industrialists, and modern and extant humans...
July 2017: Evolutionary Anthropology
https://www.readbyqxmd.com/read/28815382/spontaneous-cross-species-imitation-in-interactions-between-chimpanzees-and-zoo-visitors
#16
Tomas Persson, Gabriela-Alina Sauciuc, Elainie Alenkær Madsen
Imitation is a cornerstone of human development, serving both a cognitive function (e.g. in the acquisition and transmission of skills and knowledge) and a social-communicative function, whereby the imitation of familiar actions serves to maintain social interaction and promote prosociality. In nonhuman primates, this latter function is poorly understood, or even claimed to be absent. In this observational study, we documented interactions between chimpanzees and zoo visitors and found that the two species imitated each other at a similar rate, corresponding to almost 10% of all produced actions...
August 16, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28814515/fdg-uptake-in-lymphoid-tissue-serves-as-a-predictor-of-disease-outcome-in-the-nonhuman-primate-model-of-monkeypox-infection
#17
Julie Dyall, Reed F Johnson, Svetlana Chefer, Christopher Leyson, David Thomasson, Jurgen Seidel, Dan R Ragland, Russell Byrum, Catherine Jett, Jennifer A Cann, Marisa St Claire, Elaine Jagoda, Richard C Reba, Dima Hammoud, Joseph E Blaney, Peter B Jahrling
Real-time bioimaging of infectious disease processes may aid countermeasure development and lead to an improved understanding of pathogenesis. However, few studies have identified biomarkers for monitoring infections using in vivo imaging. Previously, we demonstrated that positron emission tomography/computed tomography (PET/CT) imaging with [(18)F]-fluorodeoxyglucose (FDG) can monitor monkeypox disease progression in vivo in nonhuman primates (NHPs). In this study, we investigated [(18)F]-FDG-PET/CT imaging of immune processes in lymphoid tissues to identify patterns of inflammation in the monkepox NHP model and to determine the value of [(18)F]-FDG-PET/CT as a biomarker for disease and treatment outcomes...
August 16, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28814183/diagnoses-and-treatment-of-dental-disorders-in-a-research-colony-of-macaca-fascicularis-a-case-series
#18
Philippe Roux, Muriel Brecheisen, Rafael de Carvalho, Alessandra Bergadano
During daily routine oral examinations in a research colony of nonhuman primates (NHPs, Macaca fascicularis), a variety of oral-dental lesions were identified. A dental care program was established based on these findings. Based on the presence of dental clinical signs and their severity, 31 animals were triaged to be examined and treated by a veterinarian. Clinical examination consisted of visual inspection using a periodontal probe/explorer and full or partial mouth dental radiographs. Treatment was performed during the same procedure...
September 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28814120/how-east-germany-fabricated-the-myth-of-hiv-being-man-made
#19
Anders Jeppsson
Despite the fact that the origin of human immunodeficiency virus (HIV) being a contamination and a mutation originating from primates is well-documented alternative narratives are often being heard ofespecially in sub-Saharan Africa. One such narrative is about HIV being man-made in a military laboratory in the United States. In this article, it is shown how this narrative was fabricated by the intelligence services in East Germany (German Democratic Republic - GDR) as part of the ideological warfare during the Cold War...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/28813264/the-neurobiology-of-fatherhood
#20
REVIEW
James K Rilling, Jennifer S Mascaro
Only about 5% of mammalian species exhibit paternal caregiving in nature, and paternal behavior has evolved multiple times independently among mammals. The most parsimonious way to evolve paternal behavior may be to utilize pre-existing neural systems that are in place for maternal behavior. Despite evidence for similarity in the neurobiology of maternal and paternal behavior in rodents, paternal behavior also has its own dedicated neural circuitry in some species. Human fathers engage conserved subcortical systems that motivate caregiving in rodent parents and human mothers, as well as cortical systems involved with empathy that they share with human mothers...
June 2017: Current Opinion in Psychology
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