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https://www.readbyqxmd.com/read/29786923/biodiversity-of-the-human-oral-mycobiome-in-health-and-disease
#1
H M H N Bandara, C P Panduwawala, L P Samaranayake
The organisms that colonize the human body over a lifetime are diverse, extensive and gargantuan. A fair proportion of the microbiota that constitutes this human microbiome live within our oral cavities mostly as harmonious associates causing only sporadic disease. An important core constituent of the microbiome is the mycobiome, representing various fungal genera. Up until recently, only a few species of fungi, mainly Candida species, were thought to constitute the human oral mycobiome. The reasons for this are manifold, although the uncultivable nature of many fungi in conventional laboratory media, and their complex genetic composition seem to be the major factors which eluded their detection over the years...
May 22, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29786878/dietary-omega-3-fatty-acids-differentially-impact-acute-ethanol-responsive-behaviors-and-ethanol-consumption-in-dba-2j-versus-c57bl-6j-mice
#2
Jennifer T Wolstenholme, M Scott Bowers, Alexander B Pais, A Christian Pais, Ryan S Poland, Justin L Poklis, Andrew G Davies, Jill C Bettinger
BACKGROUND: Complex interactions between environmental and genetic factors influence the risk for developing alcohol use disorder (AUD) in humans. To date, studies of the impact of environment on AUD risk have primarily focused on psychological characteristics or on the effects of developmental exposure to ethanol. We recently observed that modifying levels of the long-chain ω-3 (LC ω-3) fatty acid, eicosapentaenoic acid (EPA), alters acute physiological responses to ethanol in C. elegans...
May 22, 2018: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29786873/in-vivo-profiling-of-four-centrally-administered-opioids-for-antinociception-constipation-and-respiratory-depression-between-colony-differences-in-sprague-dawley-rats
#3
A Kuo, M T Smith
Outbred rodent stocks including Sprague Dawley rats, are known for their genetic diversity and so they are often used to develop animal models of human disease. Although between-colony differences in pharmaco-behavioural studies have been published previously, a direct head-to-head comparison study, whereby all research was performed in the same laboratory by the same experimenter utilising the supraspinal route of drug administration in the same strain of rat, is lacking. Herein, we report our head-to-head comparison study, involving assessment of antinociception, constipation and respiratory depression evoked by single bolus intracerebroventricular (ICV) doses of morphine, buprenorphine, DPDPE and U69,593 using male Sprague Dawley rats sourced from a different breeding colony (BC2) from that (BC1) used by us previously...
May 22, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29786835/bilateral-asymmetry-of-the-humerus-in-neandertals-australian-aborigines-and-medieval-humans
#4
Anna Maria Kubicka, Wioletta Nowaczewska, Antoine Balzeau, Janusz Piontek
OBJECTIVES: Bilateral asymmetry of diaphyseal shape and size may be a reflection of relative activity levels and patterns of habitual biomechanical stress in the upper arms of Neandertals and Homo sapiens. The main purpose of our study was to assess the level of directional asymmetry of humeral cross sections in Neandertals, recent Australian aborigines, and medieval farmers. MATERIALS AND METHODS: Indices of directional and absolute asymmetry (%DA and %AA) of humeral cross-sectional properties in Neandertals and recent Homo sapiens were calculated...
May 22, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29786788/transplantable-animal-studies-and-whole-body-optical-imaging-in-prostate-carcinoma
#5
Geertje van der Horst, Maaike van der Mark, Henry Cheung, Gabri van der Pluijm
Current treatments of advanced prostate cancer only marginally increase overall survival and can be regarded as predominantly palliative. Hence, there is an urgent need for novel therapeutic strategies for the treatment of primary tumors and, more importantly perhaps, for the prevention of tumor progression and metastasis formation. Clinically relevant preclinical models are therefore urgently needed. An ideal, clinically relevant preclinical model would mimic the genetic and phenotypic changes that occur at the different stages of human prostate cancer progression and subsequent metastasis...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786587/legal-protection-of-public-health-through-control-over-genetically-modified-food
#6
Nataliya Gutorova, Olena Batyhina, Maryna Trotska
OBJECTIVE: Introduction: Science is constantly being developed which leads to both positive and negative changes in public health and the environment. One of the results of scientific progress is introduction of food based on genetically modified organisms whose effects on human health, to date, remain scantily studied and are ambiguous. The aim: to determine how human health can be influenced by food production based on genetically modified organisms. PATIENTS AND METHODS: Materials and methods: international acts, data of international organizations and conclusions of scientists have been examined and used in the study...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29786562/application-of-hepatocyte-like-cells-to-enhance-hepatic-safety-risk-assessment-in-drug-discovery
#7
REVIEW
Dominic P Williams
Hepatic stress and injury from drugs continues to be a major concern within the pharmaceutical industry, leading to preclinical and clinical attrition precautionary warnings and post-market withdrawal of drugs. There is a requirement for more predictive and mechanistically accurate models to aid risk assessment. Primary human hepatocytes, subject to isolation stress, cryopreservation, donor-to-donor variation and a relatively short period of functional capability in two-dimensional cultures, are not suitable for high-throughput screening procedures...
July 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29786548/designer-human-tissue-coming-to-a-lab-near-you
#8
David C Hay, Cliona O'Farrelly
Human pluripotent stem cells (PSCs) offer a scalable alternative to primary and transformed human tissue. PSCs include human embryonic stem cells, derived from the inner cell mass of blastocysts unsuitable for human implantation; and induced PSCs, generated by the reprogramming of somatic cells. Both cell types display the ability to self-renew and retain pluripotency, promising an unlimited supply of human somatic cells for biomedical application. A distinct advantage of using PSCs is the ability to select for genetic background, promising personalized modelling of human biology 'in a dish' or immune-matched cell-based therapies for the clinic...
July 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29785944/-overview-of-the-genetic-control-of-horse-coat-color-patterns
#9
Ruo Yang Zhao, Yi Ping Zhao, Bei Li, Gerelchimeg Bou, Xin Zhuang Zhang, Togtokh Mongke, Tugeqin Bao, Shurenchimeg Gereliin, Tsimbai Gereltuuin, Chao Li, Dong Yi Bai, Mang Lai Dugarjaviin
Mammalian coat color is one of the first phenotypic changes resulting from positive selection by humans, and it serves important roles in genetic and evolutionary processes. Among them, horses show a broad variety of coat color patterns, based on which it is difficult to distinguish the real phenotypes, resulting in confused records in horse breed registration. Thus, research in the genetic mechanisms on the development of coat color patterns is significant in horse reproduction and breeding. With the recent establishment of genomics and sequencing technologies, there are significant advances in research in the genetics of horse coat colors, which demonstrate that special coat colors could be associated with certain diseases...
May 20, 2018: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/29785663/enterobacteria-and-host-resistance-to-infection
#10
REVIEW
Eugene Kang, Alanna Crouse, Lucie Chevallier, Stéphanie M Pontier, Ashwag Alzahrani, Navoun Silué, François-Xavier Campbell-Valois, Xavier Montagutelli, Samantha Gruenheid, Danielle Malo
Enterobacteriaceae are a large family of Gram-negative, non-spore-forming bacteria. Although many species exist as part of the natural flora of animals including humans, some members are associated with both intestinal and extraintestinal diseases. In this review, we focus on members of this family that have important roles in human disease: Salmonella, Escherichia, Shigella, and Yersinia, providing a brief overview of the disease caused by these bacteria, highlighting the contribution of animal models to our understanding of their pathogenesis and of host genetic determinants involved in susceptibility or resistance to infection...
May 21, 2018: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/29785651/genetic-analysis-of-the-human-insulin-like-3-gene-in-pediatric-patients-with-testicular-torsion
#11
Anna Paola Capra, Elisa Ferro, Maria Angela La Rosa, Silvana Briuglia, Tiziana Russo, Salvatore Arena, Carmelo Salpietro Damiano, Carmelo Romeo, Pietro Impellizzeri
PURPOSE: Testicular torsion (TT) mainly affects boys under 18 years old. To avoid orchiectomy, TT requires an immediate operative management. The etiology of TT is still controversial. Observed familiar recurrence suggests the presence of a genetic involvement. The INSL3 gene consists of two exons, and it is specifically expressed in fetal and adult Leydig cells. In transgenic mice, deletion of this gene was observed an increased testicular mobility and testicular torsion. We have hypothesized the possible involvement of the INSL3 gene as a predisposing factor of human TT...
May 21, 2018: Pediatric Surgery International
https://www.readbyqxmd.com/read/29785401/rheumatoid-arthritis-and-mirnas-a-critical-review-through-a-functional-view
#12
REVIEW
Maria Cristina Moran-Moguel, Stefania Petarra-Del Rio, Evangelina E Mayorquin-Galvan, Maria G Zavala-Cerna
Rheumatoid arthritis (RA) is a systemic autoimmune disease with severe joint inflammation and destruction associated with an inflammatory environment. The etiology behind RA remains to be elucidated; most updated concepts include the participation of environmental, proteomic, epigenetic, and genetic factors. Epigenetic is considered the missing link to explain genetic diversification among RA patients. Within epigenetic factors participating in RA, miRNAs are defined as small noncoding molecules with a length of approximately 22 nucleotides, capable of gene expression modulation, either negatively through inhibition of translation and degradation of the mRNA or positively through increasing the translation rate...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29785069/genetic-characterization-of-chikungunya-virus-2009-isolates-from-south-india
#13
Gopalsamy Sarangan, Seema A Nayar, Monika Mani, Sudharsana Sundarrajan, Sathish Sankar, Gunasekaran Palani, Gracy Fathima Selvaraj, Jayachandran Damodharan, Karuppaiah Muthumani, Padma Srikanth
Chikungunya Virus (CHIKV) is a single stranded positive sense enveloped RNA virus. Re-emergence of CHIKV caused a massive outbreak with severe clinical manifestation affecting multiple organs. The genetic diversity of CHIKV, which caused recurring outbreaks in India, was studied. Blood samples were collected from suspected human cases of CHIKV infection in Chennai, Tamil Nadu and three Northern districts of Kerala in Southern India during the CHIKV outbreak in 2009. A partial E2 gene segment was amplified by RT-PCR...
2018: Bioinformation
https://www.readbyqxmd.com/read/29785035/optimized-delivery-of-sirna-into-3d-tumor-spheroid-cultures-in-situ
#14
R G Morgan, A C Chambers, D N Legge, S J Coles, A Greenhough, A C Williams
3D tissue culture provides a physiologically relevant and genetically tractable system for studying normal and malignant human tissues. Despite this, gene-silencing studies using siRNA has proved difficult. In this study, we have identified a cause for why traditional siRNA transfection techniques are ineffective in eliciting gene silencing in situ within 3D cultures and proposed a simple method for significantly enhancing siRNA entry into spheroids/organoids. In 2D cell culture, the efficiency of gene silencing is significantly reduced when siRNA complexes are prepared in the presence of serum...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29785006/the-era-of-immunogenomics-immunopharmacogenomics
#15
REVIEW
Makda Zewde, Kazuma Kiyotani, Jae-Hyun Park, Hua Fang, Kai Lee Yap, Poh Yin Yew, Houda Alachkar, Taigo Kato, Tu H Mai, Yuji Ikeda, Tatsuo Matsuda, Xiao Liu, Lili Ren, Boya Deng, Makiko Harada, Yusuke Nakamura
Although germline alterations and somatic mutations in disease cells have been extensively analyzed, molecular changes in immune cells associated with disease conditions have not been characterized in depth. It is clear that our immune system has a critical role in various biological and pathological conditions, such as infectious diseases, autoimmune diseases, drug-induced skin and liver toxicity, food allergy, and rejection of transplanted organs. The recent development of cancer immunotherapies, particularly drugs modulating the immune checkpoint molecules, has clearly demonstrated the importance of host immune cells in cancer treatments...
May 21, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29784997/mechanics-guided-embryonic-patterning-of-neuroectoderm-tissue-from-human-pluripotent-stem-cells
#16
Xufeng Xue, Yubing Sun, Agnes M Resto-Irizarry, Ye Yuan, Koh Meng Aw Yong, Yi Zheng, Shinuo Weng, Yue Shao, Yimin Chai, Lorenz Studer, Jianping Fu
Classic embryological studies have successfully applied genetics and cell biology principles to understand embryonic development. However, it remains unresolved how mechanics, as an integral driver of development, is involved in controlling tissue-scale cell fate patterning. Here we report a micropatterned human pluripotent stem (hPS)-cell-based neuroectoderm developmental model, in which pre-patterned geometrical confinement induces emergent patterning of neuroepithelial and neural plate border cells, mimicking neuroectoderm regionalization during early neurulation in vivo...
May 21, 2018: Nature Materials
https://www.readbyqxmd.com/read/29784986/a-workflow-for-the-integrative-transcriptomic-description-of-molecular-pathology-and-the-suggestion-of-normalizing-compounds-exemplified-by-parkinson-s-disease
#17
Mohamed Hamed, Yvonne Gladbach, Steffen Möller, Sarah Fischer, Mathias Ernst, Stephan Struckmann, Alexander Storch, Georg Fuellen
The volume of molecular observations on human diseases in public databases is continuously increasing at accelerating rates. A bottleneck is their computational integration into a coherent description, from which researchers may derive new well-founded hypotheses. Also, the need to integrate data from different technologies (genetics, coding and regulatory RNA, proteomics) emerged in order to identify biomarkers for early diagnosis and prognosis of complex diseases and therefore facilitating the development of novel treatment approaches...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784981/human-activities-might-influence-oncogenic-processes-in-wild-animal-populations
#18
REVIEW
Mathieu Giraudeau, Tuul Sepp, Beata Ujvari, Paul W Ewald, Frédéric Thomas
Based on the abundant studies available on humans showing clear associations between rapid environmental changes and the rate of neoplasia, we propose that human activities might increase cancer rate in wild populations through numerous processes. Most of the research on this topic has concentrated on wildlife cancer prevalence in environments that are heavily contaminated with anthropogenic chemicals. Here, we propose that human activities might also increase cancer rate in wild populations through additional processes including light pollution, accidental (for example, human waste) or intentional (for example, bird feeders) wildlife feeding (and the associated change of diet), or reduction of genetic diversity in human-impacted habitats...
May 21, 2018: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29784979/pervasive-introgression-facilitated-domestication-and-adaptation-in-the-bos-species-complex
#19
Dong-Dong Wu, Xiang-Dong Ding, Sheng Wang, Jan M Wójcik, Yi Zhang, Małgorzata Tokarska, Yan Li, Ming-Shan Wang, Omar Faruque, Rasmus Nielsen, Qin Zhang, Ya-Ping Zhang
Species of the Bos genus, including taurine cattle, zebu, gayal, gaur, banteng, yak, wisent and bison, have been domesticated at least four times and have been an important source of meat, milk and power for many human cultures. We sequence the genomes of gayal, gaur, banteng, wisent and bison, and provide population genomic sequencing of an additional 98 individuals. We use these data to determine the phylogeny and evolutionary history of these species and show that the threatened gayal is an independent species or subspecies...
May 21, 2018: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29784875/a-human-specific-truncated-%C3%AE-7-nicotinic-receptor-subunit-assembles-with-full-length-%C3%AE-7-and-forms-functional-receptors-with-different-stoichiometries
#20
Matías Lasala, Jeremías Corradi, Ariana Bruzzone, María Del Carmen Esandi, Cecilia Bouzat
The cholinergic α7 nicotinic receptor gene, CHRNA7, encodes a subunit that forms the homopentameric α7 receptor, involved in learning and memory. In humans, exons 5-10 in CHRNA7 are duplicated and fused to the FAM7A genetic element, giving rise to the hybrid gene CHRFAM7A. Its product, dupα7, is a truncated subunit lacking part of the N-terminal extracellular ligand-binding domain and is associated with neurological disorders, including schizophrenia, and immunomodulation.We combined dupα7 expression on mammalian cells with patch clamp recordings to understand its functional role...
May 21, 2018: Journal of Biological Chemistry
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