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https://www.readbyqxmd.com/read/28220606/lamarck-rises-from-his-grave-parental-environment-induced-epigenetic-inheritance-in-model-organisms-and-humans
#1
Yan Wang, Huijie Liu, Zhongsheng Sun
Organisms can change their physiological/behavioural traits to adapt and survive in changed environments. However, whether these acquired traits can be inherited across generations through non-genetic alterations has been a topic of debate for over a century. Emerging evidence indicates that both ancestral and parental experiences, including nutrition, environmental toxins, nurturing behaviour, and social stress, can have powerful effects on the physiological, metabolic and cellular functions in an organism...
February 20, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28213398/foxo-integration-of-insulin-signaling-with-glucose-and-lipid-metabolism
#2
Sojin Lee, Henry H Dong
The forkhead box O family consists of FoxO1, FoxO3, FoxO4 and FoxO6 proteins in mammals. Expressed ubiquitously in the body, the four FoxO isoforms share in common the amino DNA binding domain, known as "forkhead box" domain. They mediate the inhibitory action of insulin or insulin-like growth factor on key functions involved in cell metabolism, growth, differentiation, oxidative stress, senescence, autophagy and aging. Genetic mutations in FoxO genes or abnormal expression of FoxO proteins are associated with metabolic disease, cancer or altered lifespan in humans and animals...
February 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28202622/the-hypertension-pandemic-an-evolutionary-perspective
#3
REVIEW
Bernard C Rossier, Murielle Bochud, Olivier Devuyst
Hypertension affects over 1.2 billion individuals worldwide and has become the most critical and expensive public health problem. Hypertension is a multifactorial disease involving environmental and genetic factors together with risk-conferring behaviors. The cause of the disease is identified in ∼10% of the cases (secondary hypertension), but in 90% of the cases no etiology is found (primary or essential hypertension). For this reason, a better understanding of the mechanisms controlling blood pressure in normal and hypertensive patients is the aim of very active experimental and clinical research...
March 2017: Physiology
https://www.readbyqxmd.com/read/28194132/molecular-imaging-markers-to-track-huntington-s-disease-pathology
#4
REVIEW
Heather Wilson, Rosa De Micco, Flavia Niccolini, Marios Politis
Huntington's disease (HD) is a progressive, monogenic dominant neurodegenerative disorder caused by repeat expansion mutation in the huntingtin gene. The accumulation of mutant huntingtin protein, forming intranuclear inclusions, subsequently leads to degeneration of medium spiny neurons in the striatum and cortical areas. Genetic testing can identify HD gene carriers before individuals develop overt cognitive, psychiatric, and chorea symptoms. Thus, HD gene carriers can be studied in premanifest stages to understand and track the evolution of HD pathology...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28167595/oropouche-virus-clinical-epidemiological-and-molecular-aspects-of-a-neglected-orthobunyavirus
#5
REVIEW
Jorge Fernando Travassos da Rosa, William Marciel de Souza, Francisco de Paula Pinheiro, Mário Luiz Figueiredo, Jedson Ferreira Cardoso, Gustavo Olszanski Acrani, Márcio Roberto Teixeira Nunes
Oropouche virus (OROV) is an important cause of arboviral illness in Latin American countries, more specifically in the Amazon region of Brazil, Venezuela and Peru, as well as in other countries such as Panama. In the past decades, the clinical, epidemiological, pathological, and molecular aspects of OROV have been published and provide the basis for a better understanding of this important human pathogen. Here, we describe the milestones in a comprehensive review of OROV epidemiology, pathogenesis, and molecular biology, including a description of the first isolation of the virus, the outbreaks during the past six decades, clinical aspects of OROV infection, diagnostic methods, genome and genetic traits, evolution, and viral dispersal...
February 6, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28142323/intracellular-nucleic-acid-detection-in-autoimmunity
#6
John T Crowl, Elizabeth E Gray, Kathleen Pestal, Hannah E Volkman, Daniel B Stetson
Protective immune responses to viral infection are initiated by innate immune sensors that survey extracellular and intracellular space for foreign nucleic acids. The existence of these sensors raises fundamental questions about self/nonself discrimination because of the abundance of self-DNA and self-RNA that occupy these same compartments. Recent advances have revealed that enzymes that metabolize or modify endogenous nucleic acids are essential for preventing inappropriate activation of the innate antiviral response...
January 30, 2017: Annual Review of Immunology
https://www.readbyqxmd.com/read/28102430/innate-and-intrinsic-antiviral-immunity-in-drosophila
#7
REVIEW
Assel Mussabekova, Laurent Daeffler, Jean-Luc Imler
The fruit fly Drosophila melanogaster has been a valuable model to investigate the genetic mechanisms of innate immunity. Initially focused on the resistance to bacteria and fungi, these studies have been extended to include antiviral immunity over the last decade. Like all living organisms, insects are continually exposed to viruses and have developed efficient defense mechanisms. We review here our current understanding on antiviral host defense in fruit flies. A major antiviral defense in Drosophila is RNA interference, in particular the small interfering (si) RNA pathway...
January 19, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28080995/rapid-emergence-of-pathogens-in-agro-ecosystems-global-threats-to-agricultural-sustainability-and-food-security
#8
REVIEW
Bruce A McDonald, Eva H Stukenbrock
Agricultural ecosystems are composed of genetically depauperate populations of crop plants grown at a high density and over large spatial scales, with the regional composition of crop species changing little from year to year. These environments are highly conducive for the emergence and dissemination of pathogens. The uniform host populations facilitate the specialization of pathogens to particular crop cultivars and allow the build-up of large population sizes. Population genetic and genomic studies have shed light on the evolutionary mechanisms underlying speciation processes, adaptive evolution and long-distance dispersal of highly damaging pathogens in agro-ecosystems...
December 5, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28058671/possible-muscle-repair-in-the-human-cardiovascular-system
#9
REVIEW
Linda Sommese, Alberto Zullo, Concetta Schiano, Francesco P Mancini, Claudio Napoli
The regenerative potential of tissues and organs could promote survival, extended lifespan and healthy life in multicellular organisms. Niches of adult stemness are widely distributed and lead to the anatomical and functional regeneration of the damaged organ. Conversely, muscular regeneration in mammals, and humans in particular, is very limited and not a single piece of muscle can fully regrow after a severe injury. Therefore, muscle repair after myocardial infarction is still a chimera. Recently, it has been recognized that epigenetics could play a role in tissue regrowth since it guarantees the maintenance of cellular identity in differentiated cells and, therefore, the stability of organs and tissues...
January 5, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28031352/phosphoribosyl-diphosphate-prpp-biosynthesis-enzymology-utilization-and-metabolic-significance
#10
REVIEW
Bjarne Hove-Jensen, Kasper R Andersen, Mogens Kilstrup, Jan Martinussen, Robert L Switzer, Martin Willemoës
Phosphoribosyl diphosphate (PRPP) is an important intermediate in cellular metabolism. PRPP is synthesized by PRPP synthase, as follows: ribose 5-phosphate + ATP → PRPP + AMP. PRPP is ubiquitously found in living organisms and is used in substitution reactions with the formation of glycosidic bonds. PRPP is utilized in the biosynthesis of purine and pyrimidine nucleotides, the amino acids histidine and tryptophan, the cofactors NAD and tetrahydromethanopterin, arabinosyl monophosphodecaprenol, and certain aminoglycoside antibiotics...
March 2017: Microbiology and Molecular Biology Reviews: MMBR
https://www.readbyqxmd.com/read/28018236/host-microbiome-interaction-and-cancer-potential-application-in-precision-medicine
#11
REVIEW
Alejandra V Contreras, Benjamin Cocom-Chan, Georgina Hernandez-Montes, Tobias Portillo-Bobadilla, Osbaldo Resendis-Antonio
It has been experimentally shown that host-microbial interaction plays a major role in shaping the wellness or disease of the human body. Microorganisms coexisting in human tissues provide a variety of benefits that contribute to proper functional activity in the host through the modulation of fundamental processes such as signal transduction, immunity and metabolism. The unbalance of this microbial profile, or dysbiosis, has been correlated with the genesis and evolution of complex diseases such as cancer...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/28005040/-genetic-diversity-of-human-immunodeficiency-viruses-and-antiretroviral-therapy
#12
M R Bobkova
The lecture is devoted to the analysis of the state-of-the-art of the impact of genetic diversity of human immunodeficiency (HIV) viruses on the pattern of infection and the efficiency of antiretroviral therapy (ART). It provides brief information on the origin and evolution of HIV and on the current classification of their genetic variants. The molecular epidemiological situation of HIV infection in Russia and nearby states and the major molecular HIV variants that are dominant in these countries, as well as their origin and prevalence trends are characterized...
2016: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/27991710/rna-interference-in-mosquito-understanding-immune-responses-double-stranded-rna-delivery-systems-and-potential-applications-in-vector-control
#13
REVIEW
A Balakrishna Pillai, U Nagarajan, A Mitra, U Krishnan, S Rajendran, S L Hoti, R K Mishra
RNA interference (RNAi) refers to the process of post-transcriptional silencing of cellular mRNA by the application of double-stranded RNA (dsRNA). RNAi strategies have been widely employed to regulate gene expression in plants and animals including insects. With the availability of the full genome sequences of major vector mosquitoes, RNAi has been increasingly used to conduct genetic studies of human pathogens in mosquito vectors and to study the evolution of insecticide resistance in mosquitoes. This review summarizes the recent progress in our understanding of mosquito-pathogen interactions using RNAi and various methods of dsRNA delivery in mosquitoes at different stages...
December 19, 2016: Insect Molecular Biology
https://www.readbyqxmd.com/read/27920388/human-drivers-of-ecological-and-evolutionary-dynamics-in-emerging-and-disappearing-infectious-disease-systems
#14
REVIEW
Mary A Rogalski, Camden D Gowler, Clara L Shaw, Ruth A Hufbauer, Meghan A Duffy
Humans have contributed to the increased frequency and severity of emerging infectious diseases, which pose a significant threat to wild and domestic species, as well as human health. This review examines major pathways by which humans influence parasitism by altering (co)evolutionary interactions between hosts and parasites on ecological timescales. There is still much to learn about these interactions, but a few well-studied cases show that humans influence disease emergence every step of the way. Human actions significantly increase dispersal of host, parasite and vector species, enabling greater frequency of infection in naive host populations and host switches...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27920382/adaptation-to-fragmentation-evolutionary-dynamics-driven-by-human-influences
#15
REVIEW
Pierre-Olivier Cheptou, Anna L Hargreaves, Dries Bonte, Hans Jacquemyn
Fragmentation-the process by which habitats are transformed into smaller patches isolated from each other-has been identified as a major threat for biodiversity. Fragmentation has well-established demographic and population genetic consequences, eroding genetic diversity and hindering gene flow among patches. However, fragmentation should also select on life history, both predictably through increased isolation, demographic stochasticity and edge effects, and more idiosyncratically via altered biotic interactions...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27920381/harvest-induced-evolution-insights-from-aquatic-and-terrestrial-systems
#16
REVIEW
Anna Kuparinen, Marco Festa-Bianchet
Commercial and recreational harvests create selection pressures for fitness-related phenotypic traits that are partly under genetic control. Consequently, harvesting can drive evolution in targeted traits. However, the quantification of harvest-induced evolutionary life history and phenotypic changes is challenging, because both density-dependent feedback and environmental changes may also affect these changes through phenotypic plasticity. Here, we synthesize current knowledge and uncertainties on six key points: (i) whether or not harvest-induced evolution is happening, (ii) whether or not it is beneficial, (iii) how it shapes biological systems, (iv) how it could be avoided, (v) its importance relative to other drivers of phenotypic changes, and (vi) whether or not it should be explicitly accounted for in management...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27920374/urban-driven-phenotypic-changes-empirical-observations-and-theoretical-implications-for-eco-evolutionary-feedback
#17
REVIEW
Marina Alberti, John Marzluff, Victoria M Hunt
Emerging evidence that cities drive micro-evolution raises the question of whether rapid urbanization of Earth might impact ecosystems by causing systemic changes in functional traits that regulate urban ecosystems' productivity and stability. Intraspecific trait variation-variation in organisms' morphological, physiological or behavioural characteristics stemming from genetic variability and phenotypic plasticity-has significant implications for ecological functions such as nutrient cycling and primary productivity...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27905217/to-crispr-and-beyond-the-evolution-of-genome-editing-in-stem-cells
#18
Kuang-Yui Chen, Paul S Knoepfler
The goal of editing the genomes of stem cells to generate model organisms and cell lines for genetic and biological studies has been pursued for decades. There is also exciting potential for future clinical impact in humans. While recent, rapid advances in targeted nuclease technologies have led to unprecedented accessibility and ease of gene editing, biology has benefited from past directed gene modification via homologous recombination, gene traps and other transgenic methodologies. Here we review the history of genome editing in stem cells (including via zinc finger nucleases, transcription activator-like effector nucleases and CRISPR-Cas9), discuss recent developments leading to the implementation of stem cell gene therapies in clinical trials and consider the prospects for future advances in this rapidly evolving field...
December 2016: Regenerative Medicine
https://www.readbyqxmd.com/read/27893151/anomalies-in-human-sex-determination-provide-unique-insights-into-the-complex-genetic-interactions-of-early-gonad-development
#19
REVIEW
A Bashamboo, C Eozenou, S Rojo, K McElreavey
Human sex determination (SD) involves complex mutually antagonistic genetic interactions of testis- and ovary-determining pathways. For many years, both male and female SD were considered to be regulated by a linear cascade of pro-male and pro-female genes, respectively; however, it has become clear that male and female development is achieved through the repression of the alternative state. A gene determining the formation of a testis may function by repressing the female state and vice versa. Uniquely in development, SD is achieved by suppression of the alternate fate and maintained in adulthood by a mutually antagonistic double-repressive pathway...
February 2017: Clinical Genetics
https://www.readbyqxmd.com/read/27888126/understanding-the-complex-evolution-of-rapidly-mutating-viruses-with-deep-sequencing-beyond-the-analysis-of-viral-diversity
#20
REVIEW
Preston Leung, Auda A Eltahla, Andrew R Lloyd, Rowena A Bull, Fabio Luciani
With the advent of affordable deep sequencing technologies, detection of low frequency variants within genetically diverse viral populations can now be achieved with unprecedented depth and efficiency. The high-resolution data provided by next generation sequencing technologies is currently recognised as the gold standard in estimation of viral diversity. In the analysis of rapidly mutating viruses, longitudinal deep sequencing datasets from viral genomes during individual infection episodes, as well as at the epidemiological level during outbreaks, now allow for more sophisticated analyses such as statistical estimates of the impact of complex mutation patterns on the evolution of the viral populations both within and between hosts...
November 22, 2016: Virus Research
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