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https://www.readbyqxmd.com/read/29449604/intravenous-synthetic-platelet-synthoplate-nanoconstructs-reduce-bleeding-and-improve-golden-hour-survival-in-a-porcine-model-of-traumatic-arterial-hemorrhage
#1
DaShawn A Hickman, Christa L Pawlowski, Andrew Shevitz, Norman F Luc, Ann Kim, Aditya Girish, Joyann Marks, Simi Ganjoo, Stephanie Huang, Edward Niedoba, Ujjal D S Sekhon, Michael Sun, Mitchell Dyer, Matthew D Neal, Vikram S Kashyap, Anirban Sen Gupta
Traumatic non-compressible hemorrhage is a leading cause of civilian and military mortality and its treatment requires massive transfusion of blood components, especially platelets. However, in austere civilian and battlefield locations, access to platelets is highly challenging due to limited supply and portability, high risk of bacterial contamination and short shelf-life. To resolve this, we have developed an I.V.-administrable 'synthetic platelet' nanoconstruct (SynthoPlate), that can mimic and amplify body's natural hemostatic mechanisms specifically at the bleeding site while maintaining systemic safety...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29447902/the-erythrocyte-osmotic-resistance-test-as-screening-tool-for-cholesterol-related-lysosomal-storage-diseases
#2
Laura López de Frutos, Jorge J Cebolla, Pilar Irún, Ralf Köhler, Pilar Giraldo
BACKGROUND: Erythrocyte volume regulation and membrane elasticity are essential for adaptation to osmotic and mechanical stress, and life span. Here, we evaluated whether defective cholesterol trafficking caused by the rare lysosomal storages diseases (LSDs), Niemann-Pick type C (NPC) and Lysosomal acid lipase (LAL) deficiency (LALD) impairs these properties. Moreover, we tested whether measurements of cholesterol membrane content and osmotic resistance serve as a screening test for these LSDs...
February 12, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29445269/an-open-label-prospective-interventional-study-of-the-tolerability-and-efficacy-of-0-4-mg-oral-tamsulosin-oral-controlled-absorption-system-in-men-with-lower-urinary-tract-symptoms-associated-with-benign-prostatic-hyperplasia-who-are-unsatisfied-with-treatment
#3
Pei-Shan Yang, Chien-Lun Chen, Chen-Pang Hou, Yu-Hsiang Lin, Ke-Hung Tsui
Purpose: The aim of this study was to investigate the efficacy and tolerability of switching from 0.2 mg tamsulosin to 0.4 mg tamsulosin oral controlled absorption system (OCAS) over a 12-week period in Taiwanese men with lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH). Patients and methods: Taiwanese male patients who were dissatisfied with treatment with 0.2 mg tamsulosin were enrolled in this clinical study and switched to 0...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29442909/synthetic-polysaccharides-as-drug-carriers-synthesis-of-polyglucose-amphotericin-b-conjugates-and-in-vitro-evaluation-of-their-anti-fungal-and-anti-leishmanial-activities
#4
Vasanthan Ravichandran, Gayathri P Kothandaraman, Christian Bories, Philippe M Loiseau, A Jayakrishnan
While many naturally occurring polysaccharides have been widely used as drug carriers, there are two main drawbacks in their use: the first is their physical properties such as molecular weight, branching, type of glycosidic linkages and solubility depend on their source and the method of isolation and purification, the second is many of them are contaminated with proteins and protein removal is essential for preventing immune reactions. Synthetic polysaccharides on the other hand can be tailor made from their respective monomers with consistent physical properties and are, free from protein contamination, both being significant advantages in their use...
April 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29439480/appropriate-handling-processing-and-analysis-of-blood-samples-is-essential-to-avoid-oxidation-of-vitamin-c-to-dehydroascorbic-acid
#5
Juliet M Pullar, Simone Bayer, Anitra C Carr
Vitamin C (ascorbate) is the major water-soluble antioxidant in plasma and its oxidation to dehydroascorbic acid (DHA) has been proposed as a marker of oxidative stress in vivo. However, controversy exists in the literature around the amount of DHA detected in blood samples collected from various patient cohorts. In this study, we report on DHA concentrations in a selection of different clinical cohorts (diabetes, pneumonia, cancer, and critically ill). All clinical samples were collected into EDTA anticoagulant tubes and processed at 4 °C prior to storage at -80 °C for subsequent analysis by HPLC with electrochemical detection...
February 11, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29438311/effects-of-dried-blood-spot-storage-on-lipidomic-analysis
#6
Cinzia Di Marino, Anna De Marco, Antonio Pisanti, Valeria Romanucci
During the lipidomic analysis of red blood cell membranes, the distribution and percentage ratios of the fatty acids are measured. Since fatty acids are the key constituents of cell membranes, by evaluating their quantities it possible to understand the general health of the cells and to obtain health indicators of the whole organism. However, because the analysis is precise, it is necessary to ensure that the blood does not undergo significant variations between the point of collection and analysis. The composition of the blood may vary dramatically weeks after collection, hence, here an attempt is made to stabilize these complex matrixes using antioxidants deposited on the paper cards on which the blood itself is deposited...
February 13, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29438268/endocytosis-of-red-blood-cell-microparticles-by-pulmonary-endothelial-cells-is-mediated-by-rab5
#7
Young Kim, William A Abplanalp, Andrew D Jung, Rebecca M Schuster, Alex B Lentsch, Erich Gulbins, Charles C Caldwell, Timothy A Pritts
Microparticles are submicron vesicles shed from aging erythrocytes as a characteristic feature of the red blood cell (RBC) storage lesion. Exposure of pulmonary endothelial cells to RBC-derived microparticles promotes an inflammatory response, but the mechanisms underlying microparticle-induced endothelial cell activation are poorly understood. In the present study, cultured murine lung endothelial cells (MLECs) were treated with microparticles isolated from aged murine packed RBCs or vehicle. Microparticle-treated cells demonstrated increased expression of the adhesion molecules ICAM and E-selectin, as well as the cytokine, IL-6...
March 2018: Shock
https://www.readbyqxmd.com/read/29435110/transfusion-associated-adverse-reactions-taars-and-cytokine-accumulations-in-the-stored-blood-components-the-impact-of-prestorage-versus-poststorage-leukoreduction
#8
Chih-Chun Chang, Tai-Chen Lee, Ming-Jang Su, Hsiu-Chen Lin, Fang-Yi Cheng, Yi-Ting Chen, Tzung-Hai Yen, Fang-Yeh Chu
Leukoreduction in blood units could prevent patients undergoing transfusions from transfusion-associated adverse reactions (TAARs) such as febrile nonhemolytic transfusion reactions (FNHTRs). However, the effect of prestorage and poststorage leukoreduction on TAARs and its underlying mechanisms in stored blood components remains to be determined. Therefore, we investigated the impact of prestorage leukocyte-reduced (pre-LR) and poststorage leukocyte-reduced (post-LR) blood products, including red blood cells (RBCs) and apheresis platelets (PHs), on the incidence of FNHTRs and other TAARs in patients who received transfusions from 2009 to 2014 in a tertiary care center...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29433864/leukoreduction-of-packed-red-blood-cells-attenuates-proinflammatory-properties-of-storage-derived-microvesicles
#9
Jillian R Richter, Jeffrey M Sutton, Phillip Hexley, Taylor A Johannigman, Alex B Lentsch, Timothy A Pritts
BACKGROUND: Leukoreduction prior to packed red blood cell (pRBC) storage is not a universally accepted practice. Our laboratory has previously shown that microvesicles (MVs) accumulate in pRBC units during storage and play an important role in lung injury after resuscitation. Currently, the effect of leukoreduction on MV formation in stored pRBC units is unknown. In the present study, we investigated the hypothesis that leukoreduction of pRBC units prior to storage would attenuate the production of MVs and decrease pulmonary inflammation after hemorrhage and resuscitation...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29432891/estimation-of-achievable-oxygen-consumption-following-transfusion-with-rejuvenated-red-blood-cells
#10
Amudan J Srinivasan, Kyle Kausch, Collin Inglut, Alan Gray, Matthew Landrigan, Jessica L Poisson, Jacob N Schroder, Ian J Welsby
OBJECTIVE: Erythrocyte storage induces a non-physiological increase in hemoglobin-oxygen affinity (quantified by low p50, the oxygen tension at 50% hemoglobin saturation), which can be restored through biochemical rejuvenation. The objective was to mathematically model the impact of transfusing up to three standard allogeneic units or rejuvenated units on oxygen delivery (DO 2 ) and oxygen consumption (VO 2 ). METHODS: Oxygen dissociation curves were generated from AS-1 RBC leukoreduced units (n = 7) before and after rejuvenation following manufacturer's instructions...
February 9, 2018: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29428299/g6pc-mrna-therapy-positively-regulates-fasting-blood-glucose-and-decreases-liver-abnormalities-in-a-mouse-model-of-glycogen-storage-disease-1a
#11
Daniel S Roseman, Tayeba Khan, Fabienne Rajas, Lucy S Jun, Kirtika H Asrani, Cleo Isaacs, Jeremiah D Farelli, Romesh R Subramanian
Glycogen storage disease type Ia (GSD1a) is an inherited metabolic disorder caused by the deficiency of glucose-6-phosphatase (G6Pase). GSD1a is associated with life-threatening hypoglycemia and long-term liver and renal complications. We examined the efficacy of mRNA-encoding human G6Pase in a liver-specific G6Pase -/- mouse model (L-G6PC -/- ) that exhibits the same hepatic biomarkers associated with GSD1a patients, such as fasting hypoglycemia, and elevated levels of hepatic glucose-6-phosphate (G6P), glycogen, and triglycerides...
January 31, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29419410/fat-in-the-blood-fat-in-the-artery-fat-in-the-heart-triglyceride-in-physiology-and-disease
#12
REVIEW
Ira J Goldberg
Cholesterol is not the only lipid that causes heart disease. Triglyceride supplies the heart and skeletal muscles with highly efficient fuel and allows for the storage of excess calories in adipose tissue. Failure to transport, acquire, and use triglyceride leads to energy deficiency and even death. However, overabundance of triglyceride can damage and impair tissues. Circulating lipoprotein-associated triglycerides are lipolyzed by lipoprotein lipase (LpL) and hepatic triglyceride lipase. We inhibited these enzymes and showed that LpL inhibition reduces high-density lipoprotein cholesterol by >50%, and hepatic triglyceride lipase inhibition shifts low-density lipoprotein to larger, more buoyant particles...
February 1, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29417976/serum-cortisol-levels-and-neuropsychological-impairments-in-patients-diagnosed-with-fibromyalgia
#13
Ernesto Barceló-Martinez, Melissa Gelves-Ospina, Edgar Navarro Lechuga, Ricardo F Allegri, Erick Orozco-Acosta, Juan C Benítez-Agudelo, Alexandra León-Jacobus, Néstor F Román
OBJECTIVE: To describe the relationship between neuropsychological variables and serum cortisol levels as a measure of physiological stress in patients with fibromyalgia. METHODOLOGY: A sample of 60 women was intentionally selected: 30 with Fibromyalgia diagnosis and 30 with normal controls. Cortisol levels were determined using two blood samples (AM and PM) and a neuropsychological and emotional battery was applied with a standardized protocol in Colombian population to evaluate different cognitive domains...
January 2018: Actas Españolas de Psiquiatría
https://www.readbyqxmd.com/read/29417780/-subculture-cryopreservation-and-recovery-of-osteoclasts
#14
Suo-Jing Yu, Cheng-Liang Wu, Hong-Ting Jin, Xue-Qin Hu, Lu-Wei Xiao, Pei-Jian Tong
OBJECTIVE: To explore the feasibility of passage, cryopreservation, and recovery of osteoclasts in order to develop new techniques facilitating osteoclast research. METHODS: Passage of osteoclasts: adult male SD rat(SPF grade, weight of 250 g) was sacrificed and the abdominal aorta was exposed for blood draw. Monocytes isolated from peripheral circulation was treated with RANKL and M-CSF for 2 weeks. After formation of osteoclasts, they were trypsinized with pipetting, centrifuged, re-suspended with α-MEM containing RANKL and M-CSF, and cultured in 6 well-plates and 35 mm culture dishes...
May 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29415017/gdna-extraction-yield-and-methylation-status-of-blood-samples-are-affected-by-long-term-storage-conditions
#15
Charlotte Schröder, Werner Steimer
Epigenetics is believed to provide great chances for a better understanding of the development and treatment of many diseases where the analysis of genomic DNA has so far failed to provide conclusive answers. Methylcytosine is a frequently used quantitative marker of epigenetic studies. Since immediate analysis of sampled material is in most cases not possible, storage time and conditions are critical aspects regarding the quality of genomic DNA and reliability of analysis. Blood is frequently used for such analyses...
2018: PloS One
https://www.readbyqxmd.com/read/29414345/dried-blood-spots-for-estimating-mercury-exposure-in-birds
#16
Marie Perkins, Niladri Basu
Mercury (Hg) is a pervasive environmental contaminant that can impair avian health, consequently there is a need to gauge exposures. Bird blood provides a measure of recent dietary exposure to Hg, but blood collection and storage can be complex and costly. Dried blood spots (DBS) may help overcome challenges of whole blood analyses, therefore, this study aimed to develop and validate a novel method to assess Hg exposure in birds using DBS. First, accuracy and precision of blood Hg concentrations for entire DBS and DBS punches were determined for white leghorn chicken (Gallus gallus domesticus) dosed with methylmercury (MeHg) via egg injection...
February 1, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29414316/ppar%C3%AE-agonist-rosiglitazone-switches-fuel-preference-to-lipids-in-promoting-thermogenesis-under-cold-exposure-in-c57bl-6-mice
#17
Rong Gao, Wei Chen, Huang Yan, Xinni Xie, Dongqi Liu, Chenxi Wu, Zhaohui Zhu, Haijing Li, Fangting Dong, Lili Wang
Brown and beige adipose tissues play key roles in adaptive thermogenesis, which is essential for homoiotherms to maintain core temperature under cold exposure. PPARγ is a transcriptional regulator critical for brown adipose tissue (BAT) recruitment and white adipose tissue (WAT) browning. Here we evaluated the impact of PPARγ activation on thermogenic activity in C57BL/6 mice under thermo-neutral and 4 °C cold environment, and revealed the regulating mechanism and metabolic basis. Rosiglitazone slowed body temperature loss in cold environment in C57BL/6 mice, suppressed cold-induced decreases in blood glucose, reversed cold-promoted 18F-FDG uptake, and increased lipid consumption in BAT...
January 27, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29414014/determination-of-oxycodone-and-its-major-metabolites-in-haematic-and-urinary-matrices-comparison-of-traditional-and-miniaturised-sampling-approaches
#18
Michele Protti, Maria Carmen Catapano, Boaz Gedaliahu Samolsky Dekel, James Rudge, Gilberto Gerra, Lorenzo Somaini, Roberto Mandrioli, Laura Mercolini
Oxycodone is a widely prescribed, full agonist opioid analgesic. As such, it is used clinically to treat different kinds of painful conditions, with a relatively high potential for doping practices in athletes. In this paper, different classic and innovative miniaturised matrices from blood and urine have been studied and compared, to evaluate their relative merits and drawbacks within therapeutic drug monitoring (TDM) and to implement new protocols for anti-doping analysis. Plasma, dried blood spots (DBS) and dried plasma spots (DPS) have been studied for TDM purposes, while urine, dried urine spots (DUS) and volumetric absorptive microsamples (VAMS) from urine for anti-doping...
January 31, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29412908/monoclonal-antibody-based-elisa-for-the-quantification-of-porcine-hemoglobin-in-meat-products
#19
Xingyi Jiang, Danielle Fuller, Yun-Hwa Peggy Hsieh, Qinchun Rao
Misusage of porcine blood proteins, such as misbranding and substitution, can cause religious objections, law violation, and food quality concerns. These issues highlight the need for detecting unlabeled or overuse of porcine blood in foods. Compared with acidic and neutral pHs, porcine hemoglobin (PHb) at alkaline pH retained the best solubility, molecular integrity, and immunoreactivity after heat treatment. PHb at acidic and alkaline pHs remained stable during storage at 4 °C for 29 days. A monoclonal antibody (mAb) specific to mammalian hemoglobin, 13F7, was developed...
June 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29405623/cucurbitane-triterpenoids-from-the-fruits-of-momordica-charantia-improve-insulin-sensitivity-and-glucose-homeostasis-in-streptozotocin-induced-diabetic-mice
#20
Joo-Hui Han, Nguyen Quoc Tuan, Min-Ho Park, Khong Trong Quan, Joonseok Oh, Kyung-Sun Heo, MinKyun Na, Chang-Seon Myung
SCOPE: Momordica charantia (M. charantia) has anti-diabetic effects, and cucurbitane-type triterpenoid is one of the compounds of M. charantia. This study aimed to investigate whether the new cucurbitane-type triterpenoids affect insulin sensitivity both in vitro and in vivo, and the underlying mechanisms. METHODS AND RESULTS: Four compounds (C1-C4) isolated from the ethanol extract of M. charantia enhanced glucose uptake in C2C12 myotubes via insulin receptor substrate-1 (IRS-1) rather than via adenosine monophosphate-activated protein kinase...
February 6, 2018: Molecular Nutrition & Food Research
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