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https://www.readbyqxmd.com/read/28431322/xanthohumol-and-8-prenylnaringenin-ameliorate-diabetic-related-metabolic-dysfunctions-in-mice
#1
Raquel Costa, Ilda Rodrigues, Luísa Guardão, Sílvia Rocha-Rodrigues, Carolina Silva, José Magalhães, Manuel Ferreira-de-Almeida, Rita Negrão, Raquel Soares
Type 2 diabetes mellitus (T2DM) is a chronic disease characterized by metabolic disturbances in specific tissues. The present work aimed to analyze the effects of xanthohumol (XN) and 8-prenylnaringenin (8PN), two beer-derived polyphenols, in liver and skeletal muscle lipid and glycolytic metabolism in T2DM mice model. Thirty C57Bl/6 mice were randomly divided into five groups: standard diet (control), high-fat diet (DM), high-fat diet plus ethanol (DM-Ethanol), high-fat diet plus 10 mg/L XN (DM-XN) and high-fat diet plus 10 mg/L 8PN (DM-8PN) during 20 weeks...
April 6, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28429194/photobiomodulation-therapy-associated-with-treadmill-training-in-the-oxidative-stress-in-a-collagen-induced-arthritis-model
#2
Solange Almeida Dos Santos, Marcia Ataize Dos Santos Vieira, Maira Cécilia Brandão Simões, Andrey Jorge Serra, Ernesto Cesar Leal-Junior, Paulo de Tarso Camillo de Carvalho
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by chronic and systemic inflammation, which leads to the destruction of the cartilage and bone and affects tissues in multiple joints. Oxidative stress has been implicated with regards to involvement in various disease conditions, such as diabetes mellitus and neurodegenerative, respiratory, cardiovascular, and RA diseases. In vivo experimental studies using photobiomodulation therapy (PBMT) have shown positive effects in reducing lipid peroxidation and in increasing antioxidant activity...
April 21, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28402322/nutritional-status-in-patients-with-phenylketonuria-using-glycomacropeptide-as-their-major-protein-source
#3
A Pinto, M F Almeida, P C Ramos, S Rocha, A Guimas, R Ribeiro, E Martins, A Bandeira, A MacDonald, J C Rocha
BACKGROUND/OBJECTIVES: Low phenylalanine (PHE), glycomacropeptide-based protein substitute (GMP) is an alternative to traditional L-amino acid supplements (AA) used in the dietary management of phenylketonuria (PKU). In a retrospective, longitudinal study, we report the nutritional status of PKU patients taking AA and GMP. SUBJECTS/METHODS: Eleven PKU patients aged 27±10 years (1 HPA, 4 mild and 6 classical PKU) on dietary treatment were evaluated (anthropometry, body composition, blood pressure measurements, biochemical markers including vitamin, mineral, lipids, carbohydrates and protein status/metabolism, and nutritional intake assessment) at two different annual reviews...
April 12, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28396017/cell-surface-targeting-of-the-melanocortin-5-receptor-mc5r-requires-serine-rich-terminal-motifs
#4
A R Rodrigues, D Sousa, H Almeida, A M Gouveia
The Melanocortin 5 Receptor (MC5R) is a cell surface receptor that belongs to the class of G-protein coupled receptors (GPCRs), which comprises an intracellular carboxylic domain, seven transmembrane helices and an extracellular amino terminal. Over the last few years, MC5R has been implicated in the regulation of lipid metabolism in exocrine glands, muscle and even in adipose tissue and its function is quite dependent on its correct cell membrane targeting. In this context, the purpose of this work was to study the role of MC5R N-terminus in the receptor trafficking from the Endoplasmic Reticulum (ER) through the Golgi complex to the plasma membrane...
April 7, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28395280/triple-a-syndrome-preliminary-response-to-the-antioxidant-n-acetylcysteine-treatment-in-a-child
#5
Maria Candida Barisson Villares Fragoso, Edoarda Vasco de Albuquerque Albuquerque, Ana Luiza de Almeida Cardoso, Paula Waki Lopes da Rosa, Rodrigo Bomeny de Paulo, Maria Heloisa Massola Schimizu, Antonio Carlos Seguro, Marisa Passarelli, Katrin Koehler, Angela Huebner, Madson Q Almeida, Ana Claudia Latronico, Ivo Jorge Prado Arnhold, Berenice Bilharinho Mendonca
INTRODUCTION: Triple A syndrome (AAAS) is a rare autosomal recessive disorder characterized by alacrima, achalasia, ACTH-resistant adrenal insufficiency, autonomic dysfunction, and progressive neurodegeneration. Increased oxidative stress, demonstrated in patients' fibroblasts in vitro, may be a central disease mechanism. N-acetylcysteine protects renal function in patients with kidney injuries associated with increased oxidative stress and improves viability of AAAS-knockdown adrenal cells in vitro...
April 10, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28348154/mechanisms-of-vesicular-stomatitis-virus-inactivation-by-protoporphyrin-ix-zinc-protoporphyrin-ix-and-mesoporphyrin-ix
#6
Christine Cruz-Oliveira, Andreza F Almeida, João M Freire, Marjolly B Caruso, Maria A Morando, Vivian N S Ferreira, Iranaia Assunção-Miranda, Andre M O Gomes, Miguel A R B Castanho, Andrea T Da Poian
Virus resistance to antiviral therapies is an increasing concern that makes urgent the development of broad spectrum antiviral drugs. Targeting viral envelope, a component shared by a large number of viruses, emerges as a promising strategy to overcome this problem. Natural and synthetic porphyrins, due to their relative hydrophobicity and pro-oxidant character, are good candidates for antivirals' development. In the present work, we characterized the antiviral activity of protoprophyrin IX (PPIX), Zn-protoporphyrin IX (ZnPPIX) and mesoporphyrin IX (MPIX) against vesicular stomatitis virus (VSV), and evaluated the mechanisms involved in this activity...
March 27, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28317745/the-impact-of-rhizopus-oryzae-cultivation-on-rice-bran-gamma-oryzanol-recovery-and-its-antioxidant-properties
#7
Kelly Cristina Massarolo, Taiana Denardi de Souza, Carolina Carvalho Collazzo, Eliana Badiale Furlong, Leonor Almeida de Souza Soares
This study evaluated the effect of the solid state cultivation (SSC) time of rice bran by Rhizopus oryzae on γ-oryzanol recovery and its antioxidant properties. Gamma-oryzanol was extracted with organic solvents and its extracts were characterized by GC-FID and HPLC-UV. The antioxidant capacity was assessed by DPPH and ABTS(+) assays, β-carotene/linoleic acid system, and reduction of oxidation in lipid system. The biomass showed the γ-oryzanol recovery increased by 51.5% (20.52mg/g), and 5.7% in polyunsaturated fatty acids...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28306733/hypervirulent-mycobacterium-tuberculosis-strain-triggers-necrotic-lung-pathology-associated-with-enhanced-recruitment-of-neutrophils-in-resistant-c57bl-6-mice
#8
Fabrício M Almeida, Thatiana L B Ventura, Eduardo P Amaral, Simone C M Ribeiro, Sanderson D Calixto, Marcelle R Manhães, Andreza L Rezende, Giliane S Souzal, Igor S de Carvalho, Elisangela C Silva, Juliana Azevedo da Silva, Eulógio C Q Carvalho, Afranio L Kritski, Elena B Lasunskaia
Tuberculosis (TB) is a chronic infectious disease caused by Mycobacterium tuberculosis (Mtb) that in most cases induces irreversible necrosis of lung tissue as a result of excessive inflammatory reactions. The murine model of TB in resistant C57BL/6 mice infected with reference Mtb strains is widely used in TB studies; however, these mice do not show a necrotic pathology, which restricts their use in studies of irreversible tissue damage. Recently, we demonstrated that necrotic lung lesions could be induced in the C57BL/6 mice by highly virulent Mtb strains belonging to the modern Beijing sublineage...
2017: PloS One
https://www.readbyqxmd.com/read/28302419/intravenous-15-isoflurane-lipid-nanoemulsion-for-general-anesthesia-in-dogs
#9
Claudio C Natalini, Carolina L Krahn, Priscila B S Serpa, Joanna E Griffith, Ricardo Miyasaka de Almeida
OBJECTIVE: To investigate the efficacy of a new intravenous (IV) nanoemulsified isoflurane formulation for maintenance of general anesthesia in dogs. STUDY DESIGN: Prospective, crossover, experimental study. ANIMALS: Seven healthy, mature, mixed-breed dogs, three male and four female, weighing 11.5 ± 1.5 kg. METHODS: Anesthesia was induced with propofol for instrumentation. Measurements were obtained before administration of either inhaled isoflurane (Iso-I) or IV 15% isoflurane-loaded lipid nanoemulsion (Iso-nano)...
January 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28288928/in%C3%A2-vitro-cytotoxicity-evaluation-of-resveratrol-loaded-nanoparticles-focus-on-the-challenges-of-in%C3%A2-vitro-methodologies
#10
V Rocha, C Marques, J L Figueiredo, A R Gaio, P C Costa, J M Sousa Lobo, I F Almeida
Assessment of toxic effects is mandatory before market placement of pharmaceutical and cosmetic products. Nanotoxicology is an emerging regulatory concern and still a challenging field. Topical application of resveratrol (RSV) has been extensively studied owing to its multi-mechanistic skin anti-aging effects. Nanoencapsulation has been suggested as a promising solution to overcome RSV stability issues. In this work RSV-loaded solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) were prepared using a homogenization/sonication technique...
March 10, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28286284/pre-clinical-investigation-of-diabetes-mellitus-as-a-risk-factor-for-schizophrenia
#11
Alexandra S Almeida Heylmann, Lara Canever, Katia Gress, Sarah T Gomes, Isadora Fachim, Carolina Michels, Geórgia C Stopassoli, Gustavo A Mastella, Amanda V Steckert, Adriani P Damiani, Vanessa M de Andrade, João Quevedo, Alexandra I Zugno
This study investigated the behavioral and biochemical parameters of DM1 as a risk factor in an animal model of schizophrenia (SZ). All groups: 1 Control (saline+saline); 2 Alloxan (alloxan+saline); 3 Ketamine (saline+ketamine); 4 (Alloxan+Ketamine) were fasted for a period of 18h before the subsequent induction of DM via a single intraperitoneal (i.p) injection of alloxan (150mg/kg). From the 4th to the 10th days, the animals were injected i.p with ketamine (25mg/kg) or saline, once a day, to induce a model of SZ and 30min after the last administration were subjected to behavioral testing...
March 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28273617/toxic-effects-of-the-antihistamine-cetirizine-in-mussel-mytilus-galloprovincialis
#12
Miguel Teixeira, Ângela Almeida, Vânia Calisto, Valdemar I Esteves, Rudolf J Schneider, Frederick J Wrona, Amadeu M V M Soares, Etelvina Figueira, Rosa Freitas
Recent studies have become increasingly focused on the assessment of pharmaceuticals occurrence in aquatic ecosystems, however the potential toxicity to non-target organisms is still largely unknown. The antihistamine cetirizine is a commonly used pharmaceutical, already detected in surface waters of marine aquatic systems worldwide. In the present study Mytilus galloprovincialis mussels were exposed to a range of cetirizine concentrations (0.3, 3.0, 6.0 and 12.0 μg/L), resembling moderate to highly contaminated areas, over 28 days...
March 5, 2017: Water Research
https://www.readbyqxmd.com/read/28261812/the-fatty-acid-profile-of-fat-depots-from-santa-in%C3%A3%C2%AAs-sheep-fed-spineless-cactus-opuntia-ficus-indica-mill
#13
Roberto G Costa, Michelly D A Almeida, George Rodrigo B Cruz, Edvaldo M Beltrão Filho, Neila L Ribeiro, Marta S Madruga, Rita de Cássia R E Queiroga
BACKGROUND: Fat is the tissue that varies most in animals from both a quantitative and distribution perspective. It plays a fundamental biological role as energy storage during food scarcity. Renal, pelvic and internal fat are deposited first. These fats are used identify fatty acid profiles that may be considered beneficial or unhealthy. The aim of this study is to evaluate the fatty acid profile of fat depots in Santa Inês sheep finished in confinement with spineless cactus in their diets...
March 6, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28241426/zinc-status-biomarkers-and-cardiometabolic-risk-factors-in-metabolic-syndrome-a-case-control-study
#14
Erika P S Freitas, Aline T O Cunha, Sephora L S Aquino, Lucia F C Pedrosa, Severina C V C Lima, Josivan G Lima, Maria G Almeida, Karine C M Sena-Evangelista
Metabolic syndrome (MS) involves pathophysiological alterations that might compromise zinc status. The aim of this study was to evaluate zinc status biomarkers and their associations with cardiometabolic factors in patients with MS. Our case control study included 88 patients with MS and 37 controls. We performed clinical and anthropometric assessments and obtained lipid, glycemic, and inflammatory profiles. We also evaluated zinc intake, plasma zinc, erythrocyte zinc, and 24-h urinary zinc excretion. The average zinc intake was significantly lower in the MS group (p < 0...
February 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28240141/preparation-characterization-and-biocompatibility-studies-of-thermoresponsive-eyedrops-based-on-the-combination-of-nanostructured-lipid-carriers-nlc-and-the-polymer-pluronic-f-127-for-controlled-delivery-of-ibuprofen
#15
Hugo Almeida, Paulo Lobão, Christian Frigerio, Joel Fonseca, Renata Silva, José Manuel Sousa Lobo, Maria Helena Amaral
CONTEXT: Nanostructured lipid carrier (NLC) dispersions present low viscosity and poor mucoadhesive properties, which reduce the pre-corneal residence time and consequently, the bioavailability of ocular drugs. OBJECTIVE: The aim of this study was to prepare thermoresponsive eyedrops based on the combination of lipid nanoparticles and a thermoresponsive polymer with mucomimetic properties (Pluronic® F-127). MATERIALS AND METHODS: NLCi dispersions were prepared based on the melt-emulsification and ultrasonication technique...
May 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28230298/vitamin-e-nanoemulsion-activity-on-stored-red-blood-cells
#16
C A L Silva, C A Azevedo Filho, G Pereira, D C N Silva, M C A B Castro, A F Almeida, S C A Lucena, B S Santos, M L Barjas-Castro, A Fontes
BACKGROUND: Stored red blood cells (RBCs) undergo numerous changes that have been termed RBC storage lesion, which can be related to oxidative damage. Vitamin E is an important antioxidant, acting on cell lipids. Thus, this study aimed to investigate vitamin E activity on stored RBCs. METHODS: We prepared a vitamin E nanoemulsion that was added to RBC units and stored at 4 °C. Controls, without vitamin E, were kept under the same conditions. Reactive oxygen species (ROS) production was monitored for up to 35 days of storage...
February 23, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28185186/eicosacell-an-imaging-based-assay-to-identify-spatiotemporal-eicosanoid-synthesis
#17
Christianne Bandeira-Melo, Ligia Almeida Paiva, Natália R T Amorim, Peter F Weller, Patricia T Bozza
Eicosanoids are bioactive lipids derived from enzymatic metabolism of arachidonic acid via the cyclooxygenase (COX) and lipoxygenase (LOX) pathways. These lipids are newly formed and nonstorable molecules that have important roles in physiological and pathological processes. The particular interest to determine intracellular compartmentalization of eicosanoid-synthetic machinery has emerged as a key component in the regulation of eicosanoid synthesis and in delineating functional intracellular and extracellular actions of eicosanoids...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28167915/the-role-of-acute-intermittent-hypoxia-in-neutrophil-generated-superoxide-sympathovagal-balance-and-vascular-function-in-healthy-subjects
#18
Germana P L Almeida, Ivani C Trombetta, Felipe X Cepeda, Elaine Hatanaka, Rui Curi, Cristiano Mostarda, Maria C Irigoyen, José A S Barreto-Filho, Eduardo M Krieger, Fernanda M Consolim-Colombo
Introduction: Recurrent hypoxia (HPX), a hallmark of the obstructive sleep apnea (OSA), impairs autonomic balance, and increases arterial blood pressure (BP). Oxidative stress is one of the mechanisms involved in these alterations. The cumulative effect of acute intermittent HPX and the chronicity may determine whether the response crosses the threshold from having protective value to pathology. However, the impact of acute intermittent HPX-reoxygenation on markers of oxidative stress in healthy individuals remains to be fully understood...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28152396/insulin-resistance-atherogenicity-and-iron-metabolism-in-multiple-sclerosis-with-and-without-depression-associations-with-inflammatory-and-oxidative-stress-biomarkers-and-uric-acid
#19
Sayonara Rangel Oliveira, Ana Paula Kallaur, Josiane Lopes, Andrea Name Colado Simão, Edna Maria Vissoci Reiche, Elaine Regina Delicato de Almeida, Helena Kaminami Morimoto, Wildea Lice de Carvalho Jennings de Pereira, Daniela Frizon Alfieri, Tamires Flauzino, Caio de Meleck Proença, Anna Maria Gomes, Damacio Ramón Kaimen-Maciel, Michael Maes
Depression is accompanied by metabolic disorders in iron metabolism, lipoproteins, and insulin resistance. We measured plasma levels of ferritin, iron, lipids, insulin, and glucose and computed the homeostasis model assessment (HOMA2IR) and atherogenic index of plasma (AIP) in MS patients with and without depression and healthy controls. Explanatory variables were serum uric acid, interleukin (IL)-6, lipid hydroperoxides (CL-LOOH), albumin, and C-reactive protein (CRP). Depression was assessed using the Hospital Anxiety and Depression Scale (HADS), neurological disability using the Expanded Disability Status Scale (EDSS), and disease progression using ∆EDSS over five years earlier...
April 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28062841/metal-based-superoxide-dismutase-and-catalase-mimics-reduce-oxidative-stress-biomarkers-and-extend-life-span-of-saccharomyces-cerevisiae
#20
Thales de P Ribeiro, Fernanda L Fonseca, Mariana D C de Carvalho, Rodrigo M da C Godinho, Fernando Pereira de Almeida, Tatiana D Saint'Pierre, Nicolás A Rey, Christiane Fernandes, Adolfo Horn, Marcos D Pereira
Aging is a natural process characterized by several biological changes. In this context, oxidative stress appears as a key factor that leads cells and organisms to severe dysfunctions and diseases. To cope with reactive oxygen species and oxidative-related damage, there has been increased use of superoxide dismutase (SOD)/catalase (CAT) biomimetic compounds. Recently, we have shown that three metal-based compounds {[Fe(HPClNOL)Cl2]NO3, [Cu(HPClNOL)(CH3CN)](ClO4)2 and Mn(HPClNOL)(Cl)2}, harboring in vitro SOD and/or CAT activities, were critical for protection of yeast cells against oxidative stress...
January 15, 2017: Biochemical Journal
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