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https://www.readbyqxmd.com/read/29166161/will-invertebrates-require-increasingly-carbon-rich-food-in-a-warming-world
#1
Thomas R Anderson, Dag O Hessen, Maarten Boersma, Jotaro Urabe, Daniel J Mayor
Elevated temperature causes metabolism and respiration to increase in poikilothermic organisms. We hypothesized that invertebrate consumers will therefore require increasingly carbon-rich diets in a warming environment because the increased energetic demands are primarily met using compounds rich in carbon, that is, carbohydrates and lipids. Here, we test this hypothesis using a new stoichiometric model that has carbon (C) and nitrogen (N) as currencies. Model predictions did not support the hypothesis, indicating instead that the nutritional requirements of invertebrates, at least in terms of food quality expressed as C∶N ratio, may change little, if at all, at elevated temperature...
December 2017: American Naturalist
https://www.readbyqxmd.com/read/29159460/compound-heterozygous-inheritance-of-mutations-in-coenzyme-q8a-results-in-autosomal-recessive-cerebellar-ataxia-and-coenzyme-q10-deficiency-in-a-female-sib-pair
#2
Jessie C Jacobsen, Whitney Whitford, Brendan Swan, Juliet Taylor, Donald R Love, Rosamund Hill, Sarah Molyneux, Peter M George, Richard Mackay, Stephen P Robertson, Russell G Snell, Klaus Lehnert
Autosomal recessive ataxias are characterised by a fundamental loss in coordination of gait with associated atrophy of the cerebellum. There is significant clinical and genetic heterogeneity amongst inherited ataxias; however, an early molecular diagnosis is essential with low-risk treatments available for some of these conditions. We describe two female siblings who presented early in life with unsteady gait and cerebellar atrophy. Whole exome sequencing revealed compound heterozygous inheritance of two pathogenic mutations (p...
November 21, 2017: JIMD Reports
https://www.readbyqxmd.com/read/29158290/a-comparative-proteome-profile-of-female-mouse-gonads-suggests-a-tight-link-between-the-electron-transport-chain-and-meiosis-initiation
#3
Cong Shen, Mingrui Li, Pan Zhang, Yueshuai Guo, Hao Zhang, Bo Zheng, Hui Teng, Tao Zhou, Xuejiang Guo, Ran Huo
Generation of haploid gametes by meiosis is a unique property of germ cells and is critical for sexual reproduction. Leaving mitosis and entering meiosis is a key step in germ cell development. Several inducers or intrinsic genes are known to be important for meiotic initiation, but the regulation of meiotic initiation, especially at the protein level, is still not well understood. We constructed a comparative proteome profile of female mouse fetal gonads at specific time points (11.5, 12.5, and 13.5 days post coitum), spanning a critical window for initiation of meiosis in female germ cells...
November 20, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29155836/genetic-variation-in-dip5-an-amino-acid-permease-and-pdr5-a-multiple-drug-transporter-regulates-glyphosate-resistance-in-s-cerevisiae
#4
Xiaoqing Rong-Mullins, Apoorva Ravishankar, Kirsten A McNeal, Zachery R Lonergan, Audrey C Biega, J Philip Creamer, Jennifer E G Gallagher
S. cerevisiae from different environments are subject to a wide range of selective pressures, whether intentional or by happenstance. Chemicals classified by their application, such as herbicides, fungicides and antibiotics, can affect non-target organisms. First marketed as RoundUp™, glyphosate is the most widely used herbicide. In plants, glyphosate inhibits EPSPS, of the shikimate pathway, which is present in many organisms but lacking in mammals. The shikimate pathway produces chorismate which is the precursor to all the aromatic amino acids, para-aminobenzoic acid, and Coenzyme Q10...
2017: PloS One
https://www.readbyqxmd.com/read/29154270/ubisol-q10-a-nanomicellar-water-soluble-formulation-of-coq10-treatment-inhibits-alzheimer-type-behavioral-and-pathological-symptoms-in-a-double-transgenic%C3%A2-mouse%C3%A2-tgapeswe-%C3%A2-psen1de9-model-of-alzheimer-s-disease
#5
Krithika Muthukumaran, Annie Kanwar, Caleb Vegh, Alexandra Marginean, Austin Elliott, Nicholas Guilbeault, Alexander Badour, Marianna Sikorska, Jerome Cohen, Siyaram Pandey
 Alzheimer's disease (AD) is one of the most common neurodegenerative pathologies for which there are no effective therapies to halt disease progression. Given the increase in the incidence of this disorder, there is an urgent need for pharmacological intervention. Unfortunately, recent clinical trials produced disappointing results. Molecular mechanisms of AD are converging on the notion that mitochondrial dysfunction, oxidative stress, and accumulation of dysfunctional proteins are involved in AD pathology...
November 16, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29151796/association-of-fragile-x-syndrome-robertsonian-translocation-13-22-and-autism-in-a-child
#6
Andreea Liana Rachisan, Alexandru Stefan Niculae, Ioana Tintea, Bianca Pop, Mariela Militaru, Aurel Bizo, Adrian Hrusca
We describe the case of a 6-year-old boy with both fragile X syndrome and Robertsonian Translocation (45, XY, der (13; 22) (q10; q10)). This is the first reported case of a patient with fragile X syndrome with this Robertsonian translocation. Facial features and macroorchidism were consistent with fragile X syndrome. Cognitive impairment is more significant than in his sibling with fragile X syndrome, and the patient also has a prior diagnosis of autism spectrum disorder. We emphasize the challenges in his behavioral management and outline future directions for his management...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29145311/pulmonary-hypertension-as-a-manifestation-of-mitochondrial-disease-a-case-report-and-review-of-the-literature
#7
Shan Xu, Xiaoling Xu, Jisong Zhang, Kejing Ying, Yuquan Shao, Ruifeng Zhang
BACKGROUND: Mitochondrial diseases are a group of multisystem heterogeneous diseases caused by pathologic dysfunction of the mitochondrial respiratory chain. A wide range of clinical expression has been described. However, pulmonary hypertension has rarely been described in association with mitochondrial disease until the past decade, and there is no currently recognized treatment for the pulmonary hypertension complicated with mitochondrial disorder. PATIENT CONCERNS: We reported the case of a 15-year-old boy who presented with shortness of breath and exercise limitation after a cold, and the diagnosis of pulmonary hypertension was confirmed by right heart catheter...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143438/protective-effects-of-coenzyme-q10-nanoparticles-on-dichlorvos-induced-hepatotoxicity-and-mitochondrial-lysosomal-injury
#8
Aziz Eftekhari, Elham Ahmadian, Aida Azami, Mohammad Johari-Ahar, Mohammad Ali Eghbal
Development of biocompatible antioxidant nanoparticles for xenobiotic-induced liver disease treatment by oral or parenteral administration is of great interest in medicine. In the current study, we demonstrate the protective effects of coenzyme Q10 nanoparticles (CoQ10-NPs) on hepatotoxicity induced by dichlorvos (DDVP) as an organophosphate. Although CoQ10 is an efficient antioxidant, its poor bioavailability has limited the applications of this useful agent. First, CoQ10-NPs were prepared then characterized using dynamic light scattering (DLS) and transmission electron microscopy (TEM)...
November 16, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29143180/oxidative-stress-in-adult-growth-hormone-deficiency-different-plasma-antioxidant-patterns-in-comparison-with-metabolic-syndrome
#9
Antonio Mancini, Chantal Di Segni, Carmine Bruno, Giulio Olivieri, Francesco Guidi, Andrea Silvestrini, Elisabetta Meucci, Patrick Orlando, Sonia Silvestri, Luca Tiano, Alfredo Pontecorvi
BACKGROUND AND AIMS: Growth hormone deficiency (GHD) is a condition associated with increased cardiovascular risk and insulin-resistance. Oxidative stress (OS) could be a mechanism underlying both these phenomena. In order to investigate plasma antioxidant defenses in such condition, we evaluated adults with GHD, compared with controls and metabolic syndrome patients (MetS), studying plasma total antioxidant capacity (TAC) and coenzyme Q10 (CoQ10, lipophilic antioxidant) levels, both in its oxidized and reduced forms, correlating this data with metabolic and hormonal pattern...
November 15, 2017: Endocrine
https://www.readbyqxmd.com/read/29133139/methemoglobin-reductase-activity-in-intact-fish-red-blood-cells
#10
Frank B Jensen, Karsten Nielsen
Red blood cells (RBCs) possess methemoglobin reductase activity that counters the ongoing oxidation of hemoglobin (Hb) to methemoglobin (metHb), which in circulating blood is caused by Hb autoxidation or reactions with nitrite. We describe an assay for determining metHb reductase activity in intact RBCs in physiological saline at normal Pco2 and pH. After initial loading of oxygenated RBCs with nitrite (partly oxidizing Hb to metHb), the nitrite is removed by three washes of the RBCs in nitrite-free physiological saline to enable the detection of RBC metHb reductase activity in the absence of counteracting oxidation...
November 10, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29128771/the-acute-thermal-respiratory-response-is-unique-among-species-in-a-guild-of-larval-anuran-amphibians-implications-for-energy-economy-in-a-warmer-future
#11
Christopher L Rowe, Erin A Crandall
Climate change is bringing about increased temperatures of amphibian habitats throughout the world, where ectothermic larvae will experience elevated respiratory (metabolic) energy demands. We compared the acute, thermal respiratory response ("TRR") of four species of sympatric larval amphibians (Lithobates sphenocephalus, L. catesbeianus, Scaphiopus holbrookii, and Hyla chrysoscelis) to determine species-specific differences in the rate at which metabolic energy requirements increase with temperature. The TRR, the slope of the relationship between respiration rate and temperature within critical thermal limits, varied significantly among species such that the absolute, per capita change in metabolic energy requirement as temperature increased was greater for L...
November 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29123615/the-combination-of-physical-exercise-with-muscle-directed-antioxidants-to-counteract-sarcopenia-a-biomedical-rationale-for-pleiotropic-treatment-with-creatine-and-coenzyme-q10
#12
REVIEW
Michele Guescini, Luca Tiano, Maria Luisa Genova, Emanuela Polidori, Sonia Silvestri, Patrik Orlando, Carmela Fimognari, Cinzia Calcabrini, Vilberto Stocchi, Piero Sestili
Sarcopenia represents an increasing public health risk due to the rapid aging of the world's population. It is characterized by both low muscle mass and function and is associated with mobility disorders, increased risk of falls and fractures, loss of independence, disabilities, and increased risk of death. Despite the urgency of the problem, the development of treatments for sarcopenia has lagged. Increased reactive oxygen species (ROS) production and decreased antioxidant (AO) defences seem to be important factors contributing to muscle impairment...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29115467/coenzyme-q10-promotes-osteoblast-proliferation-and-differentiation-and-protects-against-ovariectomy-induced-osteoporosis
#13
Delu Zheng, Chenli Cui, Meng Yu, Xiang Li, Lu Wang, Xinyan Chen, Yichen Lin
Coenzyme Q10 (CoQ10) is a fat‑soluble vitamin‑like substance used for the treatment of a variety of disorders, including osteoporosis. The exact mechanism underlying CoQ10‑mediated protection against osteoporosis remains to be elucidated. The present study aimed to evaluate the effect of CoQ10 on osteoblastic cell proliferation and differentiation, and therapeutic effects on a rat model of osteoporosis. Following treatment with different concentrations of CoQ10, cell proliferation and differentiation of rat bone marrow stromal cells (BMSCs), and expression of osteoblastogenic markers, were measured...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29112771/role-of-mitochondria-and-mitochondria-targeted-agents-in-non-alcoholic-fatty-liver-disease
#14
REVIEW
Thekkuttuparambil Ananthanarayanan Ajith
Mitochondria play a pivotal role in the fatty acid oxidation and have been found to be affected early during the macrovesicular fat accumulation in the hepatocytes. The fatty infiltration is the primary cause of oxidative stress and inflammation in the non-alcoholic fatty liver disease (NAFLD), which can lead to the peroxidation of phospholipids, such as cardiolipin. Oxidative stress-induced damage to mitochondrial DNA can result in the impairment of oxidative phosphorylation and further increases the generation of reactive oxygen species...
November 7, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29111905/the-effects-of-coenzyme-q10-supplementation-on-glucose-metabolism-lipid-profiles-inflammation-and-oxidative-stress-in-patients-with-diabetic-nephropathy-a-randomized-double-blind-placebo-controlled-trial
#15
Tahereh Gholnari, Esmat Aghadavod, Alireza Soleimani, Gholam Ali Hamidi, Nasrin Sharifi, Zatollah Asemi
OBJECTIVE: Data on the effects of coenzyme Q10 (CoQ10) supplementation on glucose metabolism, lipid profiles, inflammation, and oxidative stress in subjects with diabetic nephropathy (DN) are scarce. This research was done to determine the effects of CoQ10 supplementation on metabolic status in subjects with DN. METHODS: This randomized double-blind placebo-controlled clinical trial was done in 50 subjects with DN. Participants were randomly assigned into two groups to intake either 100 mg/day CoQ10 supplements (n = 25) or placebo (n = 25) for 12 weeks...
November 7, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29107645/cerebrospinal-fluid-levels-of-coenzyme-q10-are-reduced-in-multiple-system-atrophy
#16
Yaroslau Compta, Darly M Giraldo, Esteban Muñoz, Francesca Antonelli, Manel Fernández, Paloma Bravo, Marta Soto, Ana Cámara, Ferran Torres, María José Martí
INTRODUCTION: The finding of mutations of the COQ2 gene and reduced coenzyme Q10 levels in the cerebellum in multiple system atrophy (MSA) suggest that coenzyme Q10 is relevant to MSA pathophysiology. Two recent studies have reported reduced coenzyme Q10 levels in plasma and serum (respectively) of MSA patients compared to Parkinson's disease and/or control subjects, but with largely overlapping values, limited comparison with other parkinsonisms, or dependence on cholesterol levels. We hypothesized that cerebrospinal fluid (CSF) is reliable to assess reductions in coenzyme Q10 as a candidate biomarker of MSA...
October 20, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29107368/thinning-but-not-understory-removal-increased-heterotrophic-respiration-and-total-soil-respiration-in-pinus-massoniana-stands
#17
Lei Lei, Wenfa Xiao, Lixiong Zeng, Jianhua Zhu, Zhilin Huang, Ruimei Cheng, Shangkun Gao, Mai-He Li
Quantifying soil respiration (Rs) and its components [autotrophic respiration (Ra) and heterotrophic respiration (Rh)] in relation to forest management is vital to accurately evaluate forest carbon balance. Thus, Rs, Ra, and Rh were continuously monitored from November 2013 to November 2016 in Pinus massoniana forests subjected to four different management practices in China. We hypothesized that understory removal and thinning decrease Ra and Rh and thus Rs, and these decreases will change with time following UR and thinning...
October 26, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29106966/single-step-preparation-of-selected-biological-fluids-for-the-high-performance-liquid-chromatographic-analysis-of-fat-soluble-vitamins-and-antioxidants
#18
Giacomo Lazzarino, Salvatore Longo, Angela Maria Amorini, Valentina Di Pietro, Serafina D'Urso, Giuseppe Lazzarino, Antonio Belli, Barbara Tavazzi
Fat-soluble vitamins and antioxidants are of relevance in health and disease. Current methods to extract these compounds from biological fluids mainly need use of multi-steps and multi organic solvents. They are time-consuming and difficult to apply to treat simultaneously large sample number. We here describe a single-step, one solvent extraction of fat-soluble vitamins and antioxidants from biological fluids, and the chromatographic separation of all-trans-retinoic acid, 25-hydroxycholecalciferol, all-trans-retinol, astaxanthin, lutein, zeaxanthin, trans-β-apo-8'-carotenal, γ-tocopherol, β-cryptoxanthin, α-tocopherol, phylloquinone, lycopene, α-carotene, β-carotene and coenzyme Q10...
December 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29096550/optimization-of-nutraceutical-coenzyme-q10-nanoemulsion-with-improved-skin-permeability-and-anti-wrinkle-efficiency
#19
Eman S El-Leithy, Amna M Makky, Abeer M Khattab, Doaa G Hussein
Coenzyme Q10 (CoQ10) is an insoluble, poorly permeable antioxidant with great biological value which acts as anti-aging and anti-wrinkle agent. To improve its permeability through topical application, the current study aimed at formulating oil/water (o/w) nanoemulsion (NE) as an efficient vehicle for delivering (CoQ10) through the skin barriers. The solubility of (CoQ10) was tested for various oils, surfactants (S), and co-surfactants (CoS). The NE region was determined by constructing pseudoternary phase diagrams...
November 2, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29095839/the-temperature-sensitivity-of-soil-organic-carbon-decomposition-is-not-related-to-labile-and-recalcitrant-carbon
#20
Jie Tang, Hao Cheng, Changming Fang
The response of resistant soil organic matter to temperature change is crucial for predicting climate change impacts on C cycling in terrestrial ecosystems. However, the response of the decomposition of different soil organic carbon (SOC) fractions to temperature is still under debate. To investigate whether the labile and resistant SOC components have different temperature sensitivities, soil samples were collected from three forest and two grass land sites, along with a gradient of latitude from 18°40'to 43°17'N and elevation from 600 to 3510 m across China, and were incubated under changing temperature (from 12 to 32 oC) for at least 260 days...
2017: PloS One
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