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https://www.readbyqxmd.com/read/28214972/avocado-oil-induces-long-term-alleviation-of-oxidative-damage-in-kidney-mitochondria-from-type-2-diabetic-rats-by-improving-glutathione-status
#1
Omar Ortiz-Avila, María Del Consuelo Figueroa-García, Claudia Isabel García-Berumen, Elizabeth Calderón-Cortés, Jorge A Mejía-Barajas, Alain R Rodriguez-Orozco, Ricardo Mejía-Zepeda, Alfredo Saavedra-Molina, Christian Cortés-Rojo
Hyperglycemia and mitochondrial ROS overproduction have been identified as key factors involved in the development of diabetic nephropathy. This has encouraged the search for strategies decreasing glucose levels and long-term improvement of redox status of glutathione, the main antioxidant counteracting mitochondrial damage. Previously, we have shown that avocado oil improves redox status of glutathione in liver and brain mitochondria from streptozotocin-induced diabetic rats; however, the long-term effects of avocado oil and its hypoglycemic effect cannot be evaluated because this model displays low survival and insulin depletion...
February 18, 2017: Journal of Bioenergetics and Biomembranes
https://www.readbyqxmd.com/read/28214348/organo-protective-and-antioxidant-properties-of-leaf-extracts-of-syzygium-guineense-var-macrocarpum-against-ferric-nitriloacetate-induced-stress-of-wistar-rats
#2
Francine Tankeu Nzufo, Constant Anatole Pieme, Jacques Romain Njimou, Prosper Cabral Biapa Nya, Bruno Moukette Moukette, Bravi Marco, Chianese Angelo, Ngogang Jeanne Yonkeu
Background The present study focused on the antioxidant, phenolic profile and free radical scavenging-mediated protective effect of leaves extracts of Syzygium guineense var. macrocarpum against ferric nitriloacetate-induced stress in the liver, heart, kidney and brain tissues of Wistar rats homogenates. Methods Spectrophotometric standardized methods were used to determine the free radical scavenging potential, antioxidant and protective properties of plant extracts on rat homogenates. Results All the extracts showed a concentration-dependent free radical quenching potential, and the ability to protect all the tested organs by inhibiting the lipid peroxidation and potentiating or restoring the activity of enzymatic and non enzymatic markers...
February 16, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28208702/the-glutamate-dehydrogenase-pathway-and-its-roles-in-cell-and-tissue-biology-in-health-and-disease
#3
REVIEW
Andreas Plaitakis, Ester Kalef-Ezra, Dimitra Kotzamani, Ioannis Zaganas, Cleanthe Spanaki
Glutamate dehydrogenase (GDH) is a hexameric enzyme that catalyzes the reversible conversion of glutamate to α-ketoglutarate and ammonia while reducing NAD(P)⁺ to NAD(P)H. It is found in all living organisms serving both catabolic and anabolic reactions. In mammalian tissues, oxidative deamination of glutamate via GDH generates α-ketoglutarate, which is metabolized by the Krebs cycle, leading to the synthesis of ATP. In addition, the GDH pathway is linked to diverse cellular processes, including ammonia metabolism, acid-base equilibrium, redox homeostasis (via formation of fumarate), lipid biosynthesis (via oxidative generation of citrate), and lactate production...
February 8, 2017: Biology
https://www.readbyqxmd.com/read/28199114/curcumin-loaded-blood-stable-polymeric-micelles-for-enhancing-therapeutic-effect-on-erythroleukemia
#4
Feirong Gong, Dan Chen, Xin Teng, Junhua Ge, Xianfeng Ning, Ya-Ling Shen, Jian Li, Shanfeng Wang
Curcumin has high potential in suppressing many types of cancer and overcoming multi-drug resistance in a multi-faceted manner by targeting diverse molecular targets. However, the rather low systemic bioavailability resulted from its extremely low aqueous solubility and rapid metabolism and excretion in vivo has hampered its application in cancer therapy. With the primary aim to increase the aqueous solubility of curcumin while retaining its stability in the blood circulation before it accesses the tumor site, here we report preparation of curcumin-loaded N-(tert-butoxycarbonyl)-L-phenylalanine end-capped methoxy-poly(ethylene glycol)-block-poly(ε-caprolactone) (mPEG-PCL-Phe(Boc)) micelles with high stability both in vitro and in vivo and anti-tumor efficacy...
February 15, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28197948/mercury-in-soil-earthworms-and-organs-of-voles-myodes-glareolus-and-shrew-sorex-araneus-in-the-vicinity-of-an-industrial-complex-in-northwest-russia-cherepovets
#5
V T Komov, E S Ivanova, N Y Poddubnaya, V A Gremyachikh
The characteristic properties of uptake and distribution of mercury in terrestrial ecosystems have received much lesser attention compared to aquatic particularly in Russia. Terrestrial ecosystems adjacent to large industrial manufactures-potential sources of mercury inflow into the environment frequently remain unstudied. This is the first report on mercury (Hg) levels in the basic elements of terrestrial ecosystems situated close to a large metallurgical complex.Mean values of mercury concentration (mg Hg/kg dry weight) in the vicinity of city of Cherepovets were the following: 0...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28197623/-primary-malignant-melanoma-in-the-brain-of-a-7-month-old-sheep-ovis-aries-f-domestica
#6
Wolfram Breuer, Angela Hafner-Marx
A case of malignant melanoma in a sheep's brain is described for the first time. In a 7-month-old sheep that had been euthanized due to ataxia, post-mortem and histopathologic examinations were performed. Both the brain and the calvarium were heavily infiltrated with neoplastic tissue. Metastases were found in the liver and kidneys. Histomorphology confirmed the gross pathologic impression of malignancy. Congenital melanosis, which is regularly present in the meninx of sheep, could have been the origin of the malignant melanoma in the present case...
February 15, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28197039/surgical-illustration-of-en-bloc-dual-kidney-transplant-from-a-16-month-old-brain-dead-donor-to-an-adult-recipient
#7
Vikas Jain, Saurabh Jain, Paras Singhal, Suman Lata Nayak, Rajendra P Mathur
Transplantable organs from pediatric donors have been contributing significantly to donor pool worldwide. Pediatric donors are excellent resources that should be procured whenever available, and with the recent increase in deceased donations in India, more pediatric donors will be available for organ harvesting. We share a rare instance of multi-organ harvesting from a 16-month old brain dead donor and implanting both kidneys en-bloc in an adult male, while liver went to a 4-year old child. The report provides the surgical illustration of salient steps of transplanting both kidneys from pediatric donor into an adult, in an en-bloc manner...
January 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28195347/characterization-of-ferroptosis-in-murine-models-of-hemochromatosis
#8
Hao Wang, Peng An, Enjun Xie, Qian Wu, Xuexian Fang, Hong Gao, Zhuzhen Zhang, Yuzhu Li, Xudong Wang, Jiaying Zhang, Guoli Li, Lei Yang, Wei Liu, Junxia Min, Fudi Wang
Ferroptosis is a recently identified iron-dependent form of non-apoptotic cell death implicated in brain, kidney, and heart pathology. However, the biological roles of iron and iron metabolism in ferroptosis remain poorly understood. Here, we studied the functional role of iron and iron metabolism in the pathogenesis of ferroptosis. We found that ferric citrate potently induces ferroptosis in murine primary hepatocytes and bone marrow-derived macrophages (BMDMs). Next, we screened for ferroptosis in mice fed a high-iron diet and in mouse models of hereditary hemochromatosis with iron overload...
February 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28193507/identification-of-organ-tissue-types-and-skin-from-forensic-samples-by-microrna-expression-analysis
#9
Eva Sauer, Antje Extra, Philipp Cachée, Cornelius Courts
The identification of organ tissues in traces recovered from scenes and objects with regard to violent crimes involving serious injuries can be of considerable relevance in forensic investigations. Molecular genetic approaches are provably superior to histological and immunological assays in characterizing organ tissues, and micro-RNAs (miRNAs), due to their cell type specific expression patterns and stability against degradation, emerged as a promising molecular species for forensic analyses, with a range of tried and tested indicative markers...
February 5, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28192894/remote-ischemic-preconditioning-in-cardiac-anesthesia-a-review-focusing-on-translation
#10
Christian Stoppe, Patrick Meybohm, Carina Benstoem, Andreas Goetzenich
INTRODUCTION: Remote Ischaemic Conditioning (RIC) is a powerful cardioprotective strategy. Its clinical application is simple, cheap and so far free from secondary side effects. Given the heterogeneous results of recent large-scale clinical trials, its clinical relevant benefit is still doubted. EVIDENCE ACQUISITION: Following a MEDLINE-based search on all publications concerning RIC in experimental or clinical settings, this review focuses on the translation from bench to bedside...
February 13, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28191600/molecular-characterisation-of-tumour-necrosis-factor-alpha-and-its-potential-connection-with-lipoprotein-lipase-and-peroxisome-proliferator-activated-receptors-in-blunt-snout-bream-megalobrama-amblycephala
#11
Man Zhou, Hai-Feng Mi, Wen-Bin Liu, Ye-Yang Wu, Kai-Zhou Wang, Guang-Zhen Jiang
Tumour necrosis factor alpha (TNF-α) is one kind of cytokines which is related to inflammation and lipid metabolism. TNF-α cDNA was cloned from the liver of blunt snout bream (Megalobrama amblycephala) through real-time polymerase chain reaction (PCR) and rapid amplification of cDNA ends (RACE) methods. The full-length cDNA of TNF-α covered 1467 bp, with an open reading frame (ORF) of 723 bp, which encodes 240 amino acids. It possessed the TNF family signature IIIPDDGIYFVYSQ. After the lipopolysaccharide (LPS) challenge test, a graded tissue-specific expression pattern of TNF-α was observed and there was high expression abundance in the kidney, brain and liver...
February 13, 2017: Journal of Applied Genetics
https://www.readbyqxmd.com/read/28187746/slow-lung-clearance-and-limited-translocation-of-four-sizes-of-inhaled-iridium-nanoparticles
#12
Alison Buckley, James Warren, Alan Hodgson, Tim Marczylo, Konstantin Ignatyev, Chang Guo, Rachel Smith
BACKGROUND: Concerns have been expressed that inhaled nanoparticles may behave differently to larger particles in terms of lung clearance and translocation, with potential implications for their toxicity. Studies undertaken to investigate this have typically involved limited post-exposure periods. There is a shortage of information on longer-term clearance and translocation patterns and their dependence on particle size, which this study aimed to address. METHODS: Rats were exposed (<3 h) nose-only to aerosols of spark-generated radioactive iridium-192 nanoparticles of four sizes: 10 nm, 15 nm, 35 nm and 75 nm (count median diameter) (aerosol mass concentrations 17, 140, 430, and 690 μg/m(3), respectively)...
February 10, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28184327/the-effects-of-monosodium-glutamate-and-tannic-acid-on-adult-rats
#13
Ibrahim Ugur Calis, Didem Turgut Cosan, Faruk Saydam, Umut Kerem Kolac, Ahu Soyocak, Hulyam Kurt, Hasan Veysi Gunes, Varol Sahinturk, Fezan Sahin Mutlu, Zeynep Ozdemir Koroglu, Irfan Degirmenci
BACKGROUND: Monosodium glutamate (MSG) is a widely-used flavor enhancer and stabilizer in ready-made or packaged foods. The excessive use of MSG has been shown to increase oxidative stress in different organ systems and causes glucose metabolism disorders, obesity, and coronary diseases. OBJECTIVES: In this study, the antioxidant activity of tannic acid was investigated experimentally with respect to its protective effects against overdosed MSG-induced oxidative stress in rats...
October 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28183359/unexpected-extrapyramidal-symptoms-and-pulmonary-aspergillosis-in-exertional-heatstroke-with-fulminant-liver-failure-a-case-report
#14
Jie Jiao, Feihu Zhou, Hongjun Kang, Chao Liu, Mengmeng Yang, Jie Hu
BACKGROUND: Exertional heatstroke is a life-threatening condition with high mortality because of the rapid progress of multiple organ dysfunction syndrome even if aggressive treatments are initiated rapidly. Mild to moderate hepatic injury is common in exertional heatstroke, while fulminant liver failure is rare. Extrapyramidal symptoms and pulmonary aspergillosis secondary to liver failure induced by exertional heatstroke have never been reported in prior cases. CASE PRESENTATION: A 25-year-old Han Chinese man presented with exertional heatstroke with fulminant liver failure, subsequent pulmonary aspergillosis, and extrapyramidal symptoms...
February 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28180024/ciliopathies-genetics-in-pediatric-medicine
#15
REVIEW
Machteld M Oud, Ideke J C Lamers, Heleen H Arts
Ciliary disorders, which are also referred to as ciliopathies, are a group of hereditary disorders that result from dysfunctional cilia. The latter are cellular organelles that stick up from the apical plasma membrane. Cilia have important roles in signal transduction and facilitate communications between cells and their surroundings. Ciliary disruption can result in a wide variety of clinically and genetically heterogeneous disorders with overlapping phenotypes. Because cilia occur widespread in our bodies many organs and sensory systems can be affected when they are dysfunctional...
March 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/28176881/functional-coupling-of-human-microphysiology-systems-intestine-liver-kidney-proximal-tubule-blood-brain-barrier-and-skeletal-muscle
#16
Lawrence Vernetti, Albert Gough, Nicholas Baetz, Sarah Blutt, James R Broughman, Jacquelyn A Brown, Jennifer Foulke-Abel, Nesrin Hasan, Julie In, Edward Kelly, Olga Kovbasnjuk, Jonathan Repper, Nina Senutovitch, Janet Stabb, Catherine Yeung, Nick C Zachos, Mark Donowitz, Mary Estes, Jonathan Himmelfarb, George Truskey, John P Wikswo, D Lansing Taylor
Organ interactions resulting from drug, metabolite or xenobiotic transport between organs are key components of human metabolism that impact therapeutic action and toxic side effects. Preclinical animal testing often fails to predict adverse outcomes arising from sequential, multi-organ metabolism of drugs and xenobiotics. Human microphysiological systems (MPS) can model these interactions and are predicted to dramatically improve the efficiency of the drug development process. In this study, five human MPS models were evaluated for functional coupling, defined as the determination of organ interactions via an in vivo-like sequential, organ-to-organ transfer of media...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28176534/effects-of-piroxicam-on-tissue-distribution-of-sulfadimidine-in-west-african-dwarf-male-and-female-goats
#17
E I Akogwu, S A Saganuwan, P A Onyeyili
Cases of Stevens-Johnson syndrome have been increasingly reported in Nigeria by individuals who consumed meat products of animals especially goats injected sulfonamides. Hence, tissue distribution and residues of intramuscular sulfadimidine were studied in West African Dwarf (WAD) goats. Twenty goats divided into two groups of 10 each (five males; five females) weighing 10.4 ± 1.63 kg were administered intramuscular sulfadimidine (100 mg/kg body weight), and the second group was coadministered 5 mg/kg of piroxicam via right and left thigh muscle, respectively...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28173871/characterization-and-pathogenesis-of-aerosolized-eastern-equine-encephalitis-in-the-common-marmoset-callithrix-jacchus
#18
Aimee I Porter, Rebecca A Erwin-Cohen, Nancy Twenhafel, Taylor Chance, Steven B Yee, Steven J Kern, David Norwood, Laurie J Hartman, Michael D Parker, Pamela J Glass, Luis DaSilva
BACKGROUND: Licensed antiviral therapeutics and vaccines to protect against eastern equine encephalitis virus (EEEV) in humans currently do not exist. Animal models that faithfully recapitulate the clinical characteristics of human EEEV encephalitic disease, including fever, drowsiness, anorexia, and neurological signs such as seizures, are needed to satisfy requirements of the Food and Drug Administration (FDA) for clinical product licensing under the Animal Rule. METHODS: In an effort to meet this requirement, we estimated the median lethal dose and described the pathogenesis of aerosolized EEEV in the common marmoset (Callithrix jacchus)...
February 7, 2017: Virology Journal
https://www.readbyqxmd.com/read/28167558/pharmacokinetic-and-tissue-distribution-of-benznidazole-after-oral-administration-in-mice
#19
Luísa Perin, Rodrigo Moreira da Silva, Kátia da Silva Fonseca, Jamille Mirelle de Oliveira Cardoso, Fernando Augusto Siqueira Mathias, Levi Eduardo Soares Reis, Israel Molina, Rodrigo Correa-Oliveira, Paula Melo de Abreu Vieira, Cláudia Martins Carneiro
Specific chemotherapy using Benznidazole (BNZ) for Chagas disease during the chronic stage is controversial due to its limited efficacy and toxic effects. Although BNZ has been used to treat Chagas disease since the 1970s, few studies about the biodistribution of this drug exist. In this study, BNZ tissue biodistribution in a murine model and its pharmacokinetic profile in plasma were monitored. A bioanalytical high-performance liquid chromatography with an ultraviolet detector (HPLC-UV) method was developed and validated according to the European Medicines Agency for quantification of BNZ in organs and plasma samples prepared by liquid-liquid extraction using ethyl acetate...
February 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28167208/resveratrol-ameliorates-oxidative-stress-and-organ-dysfunction-in-schistosoma-mansoni-infected-mice
#20
R H Soliman, O A Ismail, M S Badr, S M Nasr
Schistosoma mansoni causes a major chronic debilitating disease in more than 230 million people around the world. The pathognomonic granuloma is a major cause of the oxidative stress encountered as a consequence of infection not only in the liver, but also in other important organs as spleen, lung, brain and kidney. Resveratrol administration at a dose of 20 mg/kg once daily for two weeks to mice infected with Schistosoma mansoni resulted in improvement in serum cholesterol and triglyceride levels. Enzymatic antioxidant profile showed significant modulations in Superoxide dismutase, catalase activities and reduced glutathione levels...
February 4, 2017: Experimental Parasitology
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