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https://www.readbyqxmd.com/read/29228766/the-effects-of-addition-of-coenzyme-q10-to-metformin-on-sirolimus-induced-diabetes-mellitus
#1
In O Sun, Long Jin, Jian Jin, Sun Woo Lim, Byung Ha Chung, Chul Woo Yang
Background/Aims: This study was performed to determine whether adding coenzyme Q10 (CoQ10) to metformin (MET) has a beneficial effect as a treatment for sirolimus (SRL)-induced diabetes mellitus (DM). Methods: DM was induced in rats by daily treatment with SRL (0.3 mg/kg, subcutaneous) for 28 days, and animals were treated with CoQ10 (20 mg/kg, oral) and MET (250 mg/kg, oral) alone or in combination for the latter 14 days of SRL treatment. The effects of CoQ10 and MET on SRL-induced DM were assessed with the intraperitoneal glucose tolerance test (IPGTT) and by determining plasma insulin concentration and the homeostatic model assessment of insulin resistance (HOMA-R) index...
December 13, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29226435/high-capacity-and-high-rate-discharging-of-a-coenzyme-q10-catalyzed-li-o2-battery
#2
Yantao Zhang, Liang Wang, Xiaozheng Zhang, Limin Guo, Ying Wang, Zhangquan Peng
Discharging of the aprotic Li-O2 battery relies on O2 reduction to insulating solid Li2 O2 , which can either deposit as thin films on the cathode surface or precipitate as large particles in the electrolyte solution. Toward realizing Li-O2 batteries with high capacity and high rate capability, it is crucially important to discharge Li2 O2 in the electrolyte solution rather than on the cathode surface. Here, a soluble electrocatalyst of coenzyme Q10 (CoQ10 ) that can efficaciously drive solution phase formation of Li2 O2 in current benchmark ether-based Li-O2 batteries is reported, which would otherwise lead to Li2 O2 surface-film growth and premature cell death...
December 11, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29199241/packaging-of-the-coenzyme-q10-into-a-liposome-for-mitochondrial-delivery-and-the-intracellular-observation-in-patient-derived-mitochondrial-disease-cells
#3
Yuma Yamada, Laila Burger, Eriko Kawamura, Hideyoshi Harashima
While Coenzyme Q10 (CoQ10) is thought to be effective for the treatment of a variety of diseases, it limits its cellular uptake. Because of the hydrophobic nature of CoQ10, it is reasonable to assume that it could be encapsulated within a liposomal carrier. Several reports regarding the packaging of CoQ10 in liposomes have appeared, but detailed investigations of the preparation of CoQ10 encapsulated liposomes have not been reported. As a result, information regarding the optimal method of packaging CoQ10 in liposomes is not available...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29191091/schizosaccharomyces-japonicus-has-low-levels-of-coq10-synthesis-respiration-deficiency-and-efficient-ethanol-production
#4
Tomohiro Kaino, Kai Tonoko, Shiomi Mochizuki, Yuriko Takashima, Makoto Kawamukai
Coenzyme Q (CoQ) is essential for mitochondrial respiration and as a cofactor for sulfide quinone reductase. Schizosaccharomyces pombe produces a human-type CoQ10. Here, we analyzed CoQ in other fission yeast species. S. cryophilus and S. octosporus produce CoQ9. S. japonicus produces low levels of CoQ10, although all necessary genes for CoQ synthesis have been identified in its genome. We expressed three genes (dps1, dlp1, and ppt1) for CoQ synthesis from S. japonicus in the corresponding S. pombe mutants, and confirmed that they were functional...
December 1, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29190916/coenzyme-q10-inhibits-the-activation-of-pancreatic-stellate-cells-through-pi3k-akt-mtor-signaling-pathway
#5
Ran Xue, Jing Yang, Jing Wu, Qinghua Meng, Jianyu Hao
Aim: Pancreatic stellate cells (PSCs) have a vital role in pancreatic fibrosis accompanied by pancreatic ductal adenocarcinoma (PDAC) and chronic pancreatitis (CP). Any agents which can affect the activation of PSCs could become potential candidates for treatment strategies in PDAC and CP. Our aim was to explore the effect of Coenzyme Q10 (CoQ10) in the process of PSCs activation. Methods: Isolated PSCs from C57BL/6 mice were treated with various dosages of CoQ10 (1, 10, and 100μM) and different time (24h, 48h, and 72 h)...
November 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29190857/preparation-in-vitro-characterization-and-pharmacokinetic-study-of-coenzyme-q10-long-circulating-liposomes
#6
Shuoye Yang
Long-circulating liposomal delivery systems of encapsulated Coenzyme Q10 (CoQ10), a ubiquinone anti-cataract agent, were developed with different molar ratios of PEGylated lipids and/or cholesterol. The resulting samples were contrasted through observation of morphology, analysis of particle size and Zeta potential, and in vivo pharmacokinetics. A protamine aggregation method with high selectivity was developed to determine the encapsulation efficiency (EE), after which the liposome formulation was further optimized by applying a Box Behnken design (BBD) using EE as the evaluation index...
November 30, 2017: Drug Research
https://www.readbyqxmd.com/read/29181705/coenzyme-q10-loaded-fish-oil-based-bigel-system-probing-the-delivery-across-porcine-skin-and-possible-interaction-with-fish-oil-fatty-acids
#7
Mohd Hanif Zulfakar, Lee Mei Chan, Khurram Rehman, Lam Kok Wai, Charles M Heard
Coenzyme Q10 (CoQ10) is a vitamin-like oil-soluble molecule that has anti-oxidant and anti-ageing effects. To determine the most optimal CoQ10 delivery vehicle, CoQ10 was solubilised in both water and fish oil, and formulated into hydrogel, oleogel and bigel. Permeability of CoQ10 from each formulation across porcine ear skin was then evaluated. Furthermore, the effects of the omega-3 fatty eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids from fish oil on skin permeation were investigated by means of nuclear magnetic resonance (NMR) and computerised molecular modelling docking experiments...
November 27, 2017: AAPS PharmSciTech
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
#8
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/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
#9
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/29143438/protective-effects-of-coenzyme-q10-nanoparticles-on-dichlorvos-induced-hepatotoxicity-and-mitochondrial-lysosomal-injury
#10
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
#11
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/29115467/coenzyme-q10-promotes-osteoblast-proliferation-and-differentiation-and-protects-against-ovariectomy-induced-osteoporosis
#12
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/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
#13
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/29097302/a-new-lipid-excipient-phosphorylated-tocopherol-mixture-tpm-enhances-the-solubilisation-and-oral-bioavailability-of-poorly-water-soluble-coq10-in-a-lipid-formulation
#14
Anna C Pham, Paul Gavin, Roksan Libinaki, Gisela Ramirez, Ben J Boyd
Phosphorylated tocopherols are a new class of lipid excipients that have demonstrated potential in pharmaceutical applications. Their ability to solubilise poorly water soluble drugs indicates their potential utility in improving bioavailability of drugs where solubility limits their bioavailability. In this study a commercial mixture of phosphorylated tocopherols, TPM was combined with medium chain triglyceride (MCT) as a formulation for CoQ10, and in vitro and in vivo performance compared to the effect of addition of alternative tocopherol-based excipients...
October 31, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29096550/optimization-of-nutraceutical-coenzyme-q10-nanoemulsion-with-improved-skin-permeability-and-anti-wrinkle-efficiency
#15
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/29082762/application-of-scco2-technology-for-preparing-coq10-solid-dispersion-and-sfc-ms-ms-for-analyzing-in-vivo-bioavailability
#16
Rujie Yang, Yingchao Li, Jing Li, Cuiru Liu, Ping Du, Tianhong Zhang
OBJECTIVE: In this study, solid dispersion (SD) for oral delivery of a poorly water-soluble drug, coenzyme Q10 was developed by supercritical fluid technology and characterized in vitro and in vivo. METHODS: Dissolution was used to optimize the formulations of CoQ10-SD. The physicochemical properties of SD were investigated by differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), and scanning electron microscopy (SEM). The supercritical fluid chromatography-electrospray ionization tandem mass spectrometry (SFC-ESI-MS/MS) was used for the in vivo study...
October 30, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29081748/coq10-augments-rosuvastatin-neuroprotective-effect-in-a-model-of-global-ischemia-via-inhibition-of-nf-%C3%AE%C2%BAb-jnk3-bax-and-activation-of-akt-foxo3a-bim-cues
#17
Sarah A Abd El-Aal, Mai A Abd El-Fattah, Hanan S El-Abhar
Statins were reported to lower the Coenzyme Q10 (CoQ10) content upon their inhibition of HMG-CoA reductase enzyme and both are known to possess neuroprotective potentials; therefore, the aim is to assess the possible use of CoQ10 as an adds-on therapy to rosuvastatin to improve its effect using global I/R model. Rats were allocated into sham, I/R, rosuvastatin (10 mg/kg), CoQ10 (10 mg/kg) and their combination. Drugs were administered orally for 7 days before I/R. Pretreatment with rosuvastatin and/or CoQ10 inhibited the hippocampal content of malondialdehyde, nitric oxide, and boosted glutathione and superoxide dismutase...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29081620/cardioprotective-effect-of-coenzyme-q10-on-apoptotic-myocardial-cell-death-by-regulation-of-bcl-2-gene-expression
#18
Najam Ali Khan, M Abid, Aftab Ahmad, Mohammed F Abuzinadah, Mohammed Basheikh, Kamal Kishore
OBJECTIVES: To investigate the effect of coenzyme Q10 (CoQ10) on apoptotic myocardial cell death in rat model of heart ischemia and reperfusion I/R injury. MATERIALS AND METHODS: Eighteen rats (200-250 g) were divided into three groups of 6 rats in each. Group I (sham-operated control group): this is the control group. The animals received the surgical procedure without IR injury or any drug treatment. Group II (I/R group): ischemia was accomplished by the occlusion of coronary artery for 30 min followed by reperfusion for 45 min and Group-III (Coenzyme Q10 treated group): Treated with CoQ10 at a dose of 1 mg/kg, postoperative for 7 days before induction of IR injury...
July 2017: Journal of Pharmacology & Pharmacotherapeutics
https://www.readbyqxmd.com/read/29080629/coenzyme-q10-supplementation-in-orthostatic-hypotension-and-multiple-system-atrophy-a-report-on-7-cases
#19
Christopher M Rembold
BACKGROUND: Multiple-system atrophy is a neurologic disorder characterized by orthostatic hypotension, Parkinsonian signs, and cerebellar signs. Mutations in COQ2, an enzyme involved in coenzyme Q10 (CoQ10) synthesis were recently associated with familial and sporadic cases of multiple-system atrophy. I hypothesized that people with orthostatic hypotension with or without other symptoms of multiple-system atrophy might benefit from oral CoQ10 administration. METHODS: Seven patients with symptomatic orthostatic hypotension were treated in an unrandomized manner with 257±37 mg CoQ10 daily for 10±3 months...
October 25, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/29070589/mitochondria-targeted-molecules-determine-the-redness-of-the-zebra-finch-bill
#20
Alejandro Cantarero, Carlos Alonso-Alvarez
The evolution and production mechanisms of red carotenoid-based ornaments in animals are poorly understood. Recently, it has been suggested that enzymes transforming yellow carotenoids to red pigments (ketolases) in animal cells may be positioned in the inner mitochondrial membrane (IMM) intimately linked to the electron transport chain. These enzymes may mostly synthesize coenzyme Q10 (coQ10), a key redox-cycler antioxidant molecularly similar to yellow carotenoids. It has been hypothesized that this shared pathway favours the evolution of red traits as sexually selected individual quality indices by revealing a well-adjusted oxidative metabolism...
October 2017: Biology Letters
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