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https://www.readbyqxmd.com/read/28614802/mitochondrial-dysregulation-and-glycolytic-insufficiency-functionally-impair-cd8-t-cells-infiltrating-human-renal-cell-carcinoma
#1
Peter J Siska, Kathryn E Beckermann, Frank M Mason, Gabriela Andrejeva, Allison R Greenplate, Adam B Sendor, Yun-Chen J Chiang, Armando L Corona, Lelisa F Gemta, Benjamin G Vincent, Richard C Wang, Bumki Kim, Jiyong Hong, Chiu-Lan Chen, Timothy N Bullock, Jonathan M Irish, W Kimryn Rathmell, Jeffrey C Rathmell
Cancer cells can inhibit effector T cells (Teff) through both immunomodulatory receptors and the impact of cancer metabolism on the tumor microenvironment. Indeed, Teff require high rates of glucose metabolism, and consumption of essential nutrients or generation of waste products by tumor cells may impede essential T cell metabolic pathways. Clear cell renal cell carcinoma (ccRCC) is characterized by loss of the tumor suppressor von Hippel-Lindau (VHL) and altered cancer cell metabolism. Here, we assessed how ccRCC influences the metabolism and activation of primary patient ccRCC tumor infiltrating lymphocytes (TIL)...
June 15, 2017: JCI Insight
https://www.readbyqxmd.com/read/28561252/general-care-of-the-pregnant-patient-in-the-intensive-care-unit
#2
Timothy M E Crozier
Pregnant women represent a small subset of all intensive care unit (ICU) admissions and may require intensive care for "obstetric" or "nonobstetric" reasons. Women may be admitted to the ICU at any stage of pregnancy or in the postpartum period. Pregnancy may be discovered at the time of admission to the ICU. Pregnancy impacts on ICU care in a variety of ways and requires a multidisciplinary approach to management. Pregnancy is associated with considerable physiological changes that affect most organ systems, including an expansion in blood volume, an increase in minute ventilation, and an increased risk of thrombosis...
April 2017: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28537294/using-raman-spectroscopy-to-assess-hemoglobin-oxygenation-in-red-blood-cell-concentrate-an-objective-proxy-for-morphological-index-to-gauge-the-quality-of-stored-blood
#3
Chad G Atkins, H Georg Schulze, Deborah Chen, Dana V Devine, Michael W Blades, Robin F B Turner
Blood banking is an essential aspect of modern medical care. When red blood cells (RBCs) are stored, they become damaged by various chemical processes, such as accumulation of their own waste products and oxidative injury, among others. These processes lead to the development of the RBC storage lesion, a complex condition where the severity is reflected through the morphology of the stored cells. It was hypothesized that Raman spectroscopy could be used to monitor certain structural and compositional changes associated with such ageing effects and that a relationship between these features and traditional morphology (as measured using a morphology index) could be observed...
May 24, 2017: Analyst
https://www.readbyqxmd.com/read/28507406/evaluation-of-different-agroindustrial-waste-on-the-effect-of-different-carcass-characteristics-and-physiological-and-biochemical-parameters-in-broilers-chicken
#4
Y Sánchez-Roque, Y D C Pérez-Luna, E Pérez-Luna, R Berrones Hernández, S Saldaña-Trinidad
AIM: This study was conducted to evaluate the physiological and biochemical effect in chickens of the Ross breed of a food enriched with agroindustrial waste. MATERIALS AND METHODS: The food is one of the main components of the total cost for the production of chickens. Rations should be formulated to provide the correct balance of energy, protein, amino acids, minerals, vitamins and essential fatty acids, to allow optimal growth and performance. This study was intended to evaluate a natural feed for chicken, made from corn, yucca meal, eggshells, orange peel, soybean meal, salt and garlic, enriched with agroindustrial waste (molasses, milk whey and ferment of coffee)...
April 2017: Veterinary World
https://www.readbyqxmd.com/read/28495544/modeling-glucose-metabolism-and-lactate-production-in-the-kidney
#5
Ying Chen, Brendan C Fry, Anita T Layton
The metabolism of glucose provides most of the ATP required for energy-dependent transport processes. In the inner medulla of the mammalian kidney, limited blood flow and O2 supply yield low oxygen tension; therefore, a substantial fraction of the glucose metabolism in that region is anaerobic. Lactate is considered to be a waste product of anaerobic glycolysis, which yields two lactate molecules for each glucose molecule consumed, thereby likely leading to the production and accumulation of a significant amount of lactate in the inner medulla...
May 8, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28481715/efflux-proteins-at-the-blood-brain-barrier-review-and-bioinformatics-analysis
#6
Massoud Saidijam, Fatemeh Karimi Dermani, Sareh Sohrabi, Simon G Patching
1. Efflux proteins at the blood-brain barrier provide a mechanism for export of waste products of normal metabolism from the brain and help to maintain brain homeostasis. They also prevent entry into the brain of a wide range of potentially harmful compounds such as drugs and xenobiotics. 2. Conversely, efflux proteins also hinder delivery of therapeutic drugs to the brain and central nervous system used to treat brain tumours and neurological disorders. For bypassing efflux proteins, a comprehensive understanding of their structures, functions and molecular mechanisms is necessary, along with new strategies and technologies for delivery of drugs across the blood-brain barrier...
May 30, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28463576/advances-in-application-of-mechanical-stimuli-in-bioreactors-for-cartilage-tissue-engineering
#7
Ke Li, Chunqiu Zhang, Lulu Qiu, Lilan Gao, Xizheng Zhang
Articular cartilage (AC) is the weight-bearing tissue in diarthroses. It lacks the capacity for self-healing once there are injuries or diseases due to its avascularity. With the development of tissue engineering, repairing cartilage defects through transplantation of engineered cartilage that closely matches properties of native cartilage has become a new option for curing cartilage diseases. The main hurdle for clinical application of engineered cartilage is how to develop functional cartilage constructs for mass production in a credible way...
May 24, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28409340/drosophila-malpighian-tubules-a-model-for-understanding-kidney-development-function-and-disease
#8
Naveen Kumar Gautam, Puja Verma, Madhu G Tapadia
The Malpighian tubules of insects are structurally simple but functionally important organs, and their integrity is important for the normal excretory process. They are functional analogs of human kidneys which are important physiological organs as they maintain water and electrolyte balance in the blood and simultaneously help the body to get rid of waste and toxic products after various metabolic activities. In addition, it receives early indications of insults to the body such as immune challenge and other toxic components and is essential for sustaining life...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28398221/amyloid-fibrils-from-hemoglobin
#9
Nadishka Jayawardena, Manmeet Kaur, Smitha Nair, Jenny Malmstrom, David Goldstone, Leonardo Negron, Juliet A Gerrard, Laura J Domigan
Amyloid fibrils are a class of insoluble protein nanofibers that are formed via the self-assembly of a wide range of peptides and proteins. They are increasingly exploited for a broad range of applications in bionanotechnology, such as biosensing and drug delivery, as nanowires, hydrogels, and thin films. Amyloid fibrils have been prepared from many proteins, but there has been no definitive characterization of amyloid fibrils from hemoglobin to date. Here, nanofiber formation was carried out under denaturing conditions using solutions of apo-hemoglobin extracted from bovine waste blood...
April 11, 2017: Biomolecules
https://www.readbyqxmd.com/read/28398071/raman-spectroscopy-of-blood-and-blood-components
#10
Chad G Atkins, Kevin Buckley, Michael W Blades, Robin F B Turner
Blood is a bodily fluid that is vital for a number of life functions in animals. To a first approximation, blood is a mildly alkaline aqueous fluid (plasma) in which a large number of free-floating red cells (erythrocytes), white cells (leucocytes), and platelets are suspended. The primary function of blood is to transport oxygen from the lungs to all the cells of the body and move carbon dioxide in the return direction after it is produced by the cells' metabolism. Blood also carries nutrients to the cells and brings waste products to the liver and kidneys...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28393682/new-feed-ingredients-the-insect-opportunity
#11
L W D van Raamsdonk, H J van der Fels-Klerx, J de Jong
In the framework of sustainability and a circular economy, new ingredients for feed are desired and, to this end, initiatives for implementing such novel ingredients have been started. The initiatives include a range of different sources, of which insects are of particular interest. Within the European Union, generally, a new feed ingredient should comply with legal constraints in terms of 'yes, provided that' its safety commits to a range of legal limits for heavy metals, mycotoxins, pesticides, contaminants, pathogens etc...
April 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28389645/enhanced-interstitial-fluid-drainage-in-the-hippocampus-of-spontaneously-hypertensive-rats
#12
Beatrice Bedussi, Daphne M P Naessens, Judith de Vos, Rik Olde Engberink, Micha M M Wilhelmus, Edo Richard, Malyssa Ten Hove, Ed vanBavel, Erik N T P Bakker
Hypertension is associated with cognitive decline and various forms of dementia, including Alzheimer's disease. In animal models of hypertension, many of Alzheimer's disease characteristics are recapitulated, including brain atrophy, cognitive decline, amyloid β accumulation and blood brain barrier dysfunction. Removal of amyloid β and other waste products depends in part on clearance via the brain interstitial fluid (ISF). Here we studied the impact of hypertension on ISF drainage, using spontaneously hypertensive rats (SHR) and normotensive Wistar Kyoto rats (WKY)...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28362109/fruit-and-vegetable-by-products-as-novel-ingredients-to-improve-the-nutritional-quality-of-baked-goods
#13
Manuel Gómez, Mario M Martinez
The industrial manufacturing of fruits and vegetables generates approximately 50% by-product waste, causing a negative environmental impact and significant expenses. Nevertheless, fruit and vegetable by-products (FVB) are rich nutrients and extranutritional compounds that contribute to bowel health, weight management, lower blood cholesterol levels and improved control of glycemic and insulin responses. Due to the positive influence of FVB fibers and bioactive compounds during the digestion of glycemic carbohydrates, such as starch, baked goods are ideal food systems to accommodate FVB, since most of them have a high glycemic index...
March 31, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28351541/nutrient-contributions-and-biogas-potential-of-co-digestion-of-feedstocks-and-dairy-manure
#14
Guiling Ma, J Shannon Neibergs, Joseph H Harrison, Elizabeth M Whitefield
This study focused on collection of data on nutrient flow and biogas yield at a commercial anaerobic digester managed with dairy manure from a 1000 cow dairy and co-digestion of additional feedstocks. Feedstocks included: blood, fish, paper pulp, out of date beverages and grease trap waste. Mass flow of inputs and outputs, nutrient concentration of inputs and outputs, and biogas yield were obtained. It was determined that manure was the primary source of nutrients to the anaerobic digester when co-digested with feedstocks...
March 25, 2017: Waste Management
https://www.readbyqxmd.com/read/28324271/anti-mullerian-hormone-concentrations-in-individual-follicular-fluids-within-one-stimulated-ivf-cycle-resemble-blood-serum-values
#15
Michael Schenk, Julia Maria Kröpfl, Barbara Obermayer-Pietsch, Elisabeth Feldmeier, Gregor Weiss
PURPOSE: Anti-Mullerian hormone (AMH) is commonly known as the most potent marker for ovarian reserve due to its decline as female age increases. While serum AMH (sAMH) levels have been intensively investigated, there is less data regarding AMH concentrations in follicular fluid (FF), since FF has usually been designated as waste product during oocyte collection in assisted reproductive technologies. This pilot study investigated follicle AMH concentrations (fAMH) of several follicles per ovary, individually collected with the Steiner-Tan needle, and compared them to sAMH concentrations in women undergoing IVF treatment...
March 21, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28321880/group-o-rbcs-where-is-universal-donor-blood-being-used
#16
R L Barty, M Pai, Y Liu, D M Arnold, R J Cook, M P Zeller, N M Heddle
BACKGROUND: There have been recurrent shortages of group O blood due to insufficient inventory and use of group O blood in ABO non-identical recipients. We performed a 12-year retrospective study to determine utilization of group O Rh-positive and Rh-negative red blood cells (RBCs) by recipient ABO group. Reasons for transfusing group O blood to ABO non-identical recipients were also assessed. METHODS: Utilization data from all group O Rh-positive and Rh-negative RBCs transfused at three academic hospitals between April 2002 and March 2014 were included...
March 20, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28321408/novel-sequential-screening-and-enhanced-production-of-fibrinolytic-enzyme-by-bacillus-sp-ind12-using-response-surface-methodology-in-solid-state-fermentation
#17
Ponnuswamy Vijayaraghavan, P Rajendran, Samuel Gnana Prakash Vincent, Arumugaperumal Arun, Naif Abdullah Al-Dhabi, Mariadhas Valan Arasu, Oh Young Kwon, Young Ock Kim
Fibrinolytic enzymes have wide applications in clinical and waste treatment. Bacterial isolates were screened for fibrinolytic enzyme producing ability by skimmed milk agar plate using bromocresol green dye, fibrin plate method, zymography analysis, and goat blood clot lysis. After these sequential screenings, Bacillus sp. IND12 was selected for fibrinolytic enzyme production. Bacillus sp. IND12 effectively used cow dung for its growth and enzyme production (687 ± 6.5 U/g substrate). Further, the optimum bioprocess parameters were found out for maximum fibrinolytic enzyme production using cow dung as a low cost substrate under solid-state fermentation...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28294105/breath-acetone-as-a-potential-marker-in-clinical-practice
#18
Vera Ruzsanyi, Miklós Kalapos
In recent decades, two facts have changed the opinion of researchers about the function of acetone in humans. Firstly, it has turned out that acetone cannot be regarded as simply a waste product of metabolism, because there are several pathways in which acetone is produced or broken down. Secondly, methods have emerged making possible its detection in exhaled breath, thereby offering an attractive alternative to investigation of blood and urine samples. From a clinical point of view the measurement of breath acetone levels are important, but there are limitations to its wide application...
March 15, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28292671/heavy-metal-bioaccumulation-in-two-passerines-with-differing-migration-strategies
#19
Zoë Cooper, Robert Bringolf, Robert Cooper, Kathy Loftis, Albert L Bryan, James A Martin
Various anthropogenic activities have resulted in concentration of heavy metals and contamination of surrounding environments. Historically, heavy metal contamination at the Savannah River Site (SRS) in South Carolina has resulted from accidental releases of stored waste generated from nuclear weapon production in the early 1950s. Songbirds inhabiting and using resources from these areas have the potential to bioaccumulate metals but there is limited information on metal concentration levels in areas suspected of contamination as well as uncontaminated sites...
March 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28288931/pouteria-torta-epicarp-as-a-useful-source-of-%C3%AE-amylase-inhibitor-in-the-control-of-type-2-diabetes
#20
Paloma Michelle de Sales, Paula Monteiro de Souza, Mariana Dartora, Inês Sabioni Resck, Luiz Alberto Simeoni, Yris Maria Fonseca-Bazzo, Pérola de Oliveira Magalhães, Dâmaris Silveira
Type 2 diabetes plays a major role in public health, affecting about 400 million adults. One of the used strategies to control type 2 diabetes is the inhibition of α-amylase activity to reduce post-prandial blood glucose levels. Therefore, in past decades, the search of new α-amylase inhibitors has led to the evaluation of natural products as a source of these compounds. Pouteria torta (Sapotaceae) is widespread in Brazil and bears edible fruits. Epicarp and pulp crude extracts of fresh fruits were studied for in vitro α-amylase inhibition activity...
March 10, 2017: Food and Chemical Toxicology
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