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https://www.readbyqxmd.com/read/28931470/free-light-chains-eclectic-multipurpose-biomarker
#1
REVIEW
Umberto Basile, Francesca Gulli, Laura Gragnani, Cecilia Napodano, Krizia Pocino, Gian Ludovico Rapaccini, Michele Mussap, Anna Linda Zignego
The production of antibodies is accompanied by a slight excess of synthesis of κ and λ immunoglobulin light chains; small amounts of them are released in the peripheral blood and can also be found in various body fluids, such as synovial fluid, cerebrospinal fluid, urine and saliva. They are rapidly filtered by the glomerulus and >99% are reabsorbed from the cells of the proximal convoluted tubule, making them present in the urine in only trace amounts. The production of an excess of protein without a reason or a specific function in a biological system is rare...
September 17, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28928007/removal-of-uremic-retention-products-by-hemodialysis-is-coupled-with-indiscriminate-loss-of-vital-metabolites
#2
Zhi-Hao Zhang, Jia-Rong Mao, Hua Chen, Wei Su, Yuan Zhang, Li Zhang, Dan-Qian Chen, Ying-Yong Zhao, Nosratola D Vaziri
BACKGROUND: Although dialysis ameliorates uremia and fluid and electrolytes disorders, annual mortality rate remains high in dialysis population reflecting its shortcoming in replacing renal function. Unlike the normal kidney, dialysis causes dramatic shifts in volume and composition of body fluids and indiscriminate removal of vital solutes. Present study was undertaken to determine the impact of hemodialysis on plasma metabolites in end-stage renal disease (ESRD) patients. METHODS: 80 hemodialysed patients and 80 age/gender-matched healthy controls were enrolled in the study...
September 16, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28919754/preparation-of-coffee-oil-algae-oil-based-nanoemulsions-and-the-study-of-their-inhibition-effect-on-uva-induced-skin-damage-in-mice-and-melanoma-cell-growth
#3
Chu-Ching Yang, Chi-Feng Hung, Bing-Huei Chen
Coffee grounds, a waste by-product generated after making coffee, contains approximately 15% coffee oil which can be used as a raw material in cosmetics. Algae oil rich in docosahexaenoic acid (DHA) has been demonstrated to possess anticancer and anti-inflammation functions. The objectives of this study were to develop a gas chromatography-mass spectrometry (GC-MS) method for the determination of fatty acids in coffee oil and algae oil and prepare a nanoemulsion for studying its inhibition effect on ultraviolet A-induced skin damage in mice and growth of melanoma cells B16-F10...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28910795/multidimensional-classification-of-dialysis-membranes
#4
Claudio Ronco, Mauro Neri, Anna Lorenzin, Francesco Garzotto, William R Clark
Hemodialysis is a process of mass separation by a semipermeable membrane, utilized to cleanse blood from waste products retained in case of kidney failure. Traditionally, dialysis membranes have been classified based on composition and hydraulic conductance, creating the net differentiation between cellulosic versus non-cellulosic on one hand and low-flux versus high-flux on the other. With the evolution of biomaterials and improved spinning technology, new membranes have been introduced in the market with specific characteristics and refined individual properties...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28898346/-treatment-of-hyperthyroidism-with-radioiodine-during-hemodialysis-report-of-one-case
#5
Claudia Hurtado, María Soledad Báez, Anabel Bate, Claudio Opazo, Mauricio Troncoso
Although radioiodine (131-I) can be used as treatment of hyperthyroidism for patients in hemodialysis, its use is limited and the experience is mainly related to differentiated thyroid carcinoma. We report a 58 years old female on hemodialysis with recurrent hyperthyroidism after propylthiouracil treatment. She was successfully treated with 131-I and four months after the intervention her euthyroid state was confirmed. We measured 131-I activity in blood, dialysate liquid and other waste products, as well as patient radiation exposure rates...
May 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28893838/biology-of-bone-the-vasculature-of-the-skeletal-system
#6
Emma C Watson, Ralf H Adams
Blood vessels are essential for the distribution of oxygen, nutrients, and immune cells, as well as the removal of waste products. In addition to this conventional role as a versatile conduit system, the endothelial cells forming the innermost layer of the vessel wall also possess important signaling capabilities and can control growth, patterning, homeostasis, and regeneration of the surrounding organ. In the skeletal system, blood vessels regulate developmental and regenerative bone formation as well as hematopoiesis by providing vascular niches for hematopoietic stem cells...
September 11, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28831660/distribution-of-polybrominated-diphenyl-ethers-in-breast-milk-cord-blood-and-placentas-a-systematic-review
#7
Jing Tang, Jin Xia Zhai
Polybrominated diphenyl ethers (PBDEs) have been extensively used as flame retardants in consumer products. PBDEs rapidly bioaccumulate in the environment, food, wild animals and humans. In this review, we investigated the harmful effects of PBDEs on humans, especially in early life, and summarised the levels of PBDEs in human biological samples (breast milk, cord blood and placentas). In addition, we described the spatiotemporal distribution of PBDEs in this review. PBDE levels in breast milk, cord blood and placentas were generally higher in North America than in other regions, such as Asia, Europe, Oceania and Africa...
August 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28828617/glutamate-transporters-in-the-blood-brain-barrier
#8
Hans Christian Cederberg Helms, Carsten Uhd Nielsen, Helle Sønderby Waagepetersen, Birger Brodin
The amino acid L-glutamate serves a number of roles in the central nervous system, being an excitatory neurotransmitter, metabolite, and building block in protein synthesis. During pathophysiological events, where L-glutamate homeostasis cannot be maintained, the increased brain interstitial fluid concentration of L-glutamate causes excitotoxicity. A tight control of the brain interstitial fluid L-glutamate levels is therefore imperative, in order to maintain optimal neurotransmission and to avoid such excitotoxicity...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28806581/engineered-systems-for-therapeutic-angiogenesis
#9
REVIEW
Shane Browne, Abhay Pandit
Ischemic disease caused by insufficient blood supply leads to a lack of oxygen and nutrients and a build-up of waste products in the affected tissue. Therapeutic angiogenesis, as a means to enhance perfusion of tissues with an inadequate blood supply, holds great promise for the treatment of ischemic disease. A wide range of factors that play a key role in physiological angiogenesis have been identified and trialed as pro-angiogenic agents. However, as yet pro-angiogenic treatments have failed to be translated clinically, owing to both lack of efficacy and safety concerns regarding the use of doses considerably larger than is typical present under physiological conditions...
August 11, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28804120/mitochondrial-energetics-in-the-kidney
#10
REVIEW
Pallavi Bhargava, Rick G Schnellmann
The kidney requires a large number of mitochondria to remove waste from the blood and regulate fluid and electrolyte balance. Mitochondria provide the energy to drive these important functions and can adapt to different metabolic conditions through a number of signalling pathways (for example, mechanistic target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) pathways) that activate the transcriptional co-activator peroxisome proliferator-activated receptor-γ co-activator 1α (PGC1α), and by balancing mitochondrial dynamics and energetics to maintain mitochondrial homeostasis...
October 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28764885/plasma-oxalate-in-relation-to-egfr-in-patients-with-primary-hyperoxaluria-enteric-hyperoxaluria-and-urinary-stone-disease
#11
Majuran Perinpam, Felicity T Enders, Kristin C Mara, Lisa E Vaughan, Ramila A Mehta, Nickolay Voskoboev, Dawn S Milliner, John C Lieske
BACKGROUND: Since plasma oxalate (POx) concentrations increase at lower glomerular filtration rate (GFR) levels, even among those without enteric (EH) or primary hyperoxaluria (PH), the appropriate thresholds for considering a disorder of oxalate metabolism are poorly defined. The current study was completed to establish relationships between POx, GFR, and urine oxalate excretion (UOx) among patients with PH, EH, and routine urinary stone disease (USD). METHODS: The most recent POx measurement on all Mayo Clinic patients between 2005 and 2015 were electronically pulled from the Lab Information System together with the closest serum creatinine within 14days and 24h urine study within 60days...
July 29, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28718423/angiogenesis-and-metabolism-entwined-for-therapy-resistance
#12
REVIEW
Gabriela Jiménez-Valerio, Oriol Casanovas
Angiogenesis and metabolism are entwined processes that permit tumor growth and progression. Blood vessel supply is necessary for tumor survival not only by providing oxygen and nutrients for anabolism but also by removing waste products from cellular metabolism. On the other hand, blocking angiogenesis with antiangiogenic therapies shows clinical benefits in treating several tumor types. Nevertheless, resistance to therapy emerges over time. In this review we discuss a novel mechanism of adaptive resistance involving metabolic adaptation of tumor cells, and we also provide examples of tumor adaptation to therapy, which may represent a new mechanism of resistance in several types of cancer...
January 2017: Trends in Cancer
https://www.readbyqxmd.com/read/28614802/mitochondrial-dysregulation-and-glycolytic-insufficiency-functionally-impair-cd8-t-cells-infiltrating-human-renal-cell-carcinoma
#13
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
#14
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
#15
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
#16
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
#17
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...
July 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28481715/efflux-proteins-at-the-blood-brain-barrier-review-and-bioinformatics-analysis
#18
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
#19
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...
August 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28409340/drosophila-malpighian-tubules-a-model-for-understanding-kidney-development-function-and-disease
#20
REVIEW
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
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