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Cell-free hemoglobin

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https://www.readbyqxmd.com/read/29785516/increased-water-temperature-altered-hemato-biochemical-parameters-and-structure-of-peripheral-erythrocytes-in-striped-catfish-pangasianodon-hypophthalmus
#1
Md Shahjahan, Md Helal Uddin, Victor Bain, Md Mahfuzul Haque
The increase of water temperature due to global warming is a great concern of aquaculturists and fishery biologists. In the present study, we examined the effects of high temperature on hematological parameters and blood glucose levels in striped catfish, Pangasianodon hypophthalmus exposed to three temperature conditions (28, 32, and 36 °C) for 7 days. Fish were sacrificed at days 1, 3, and 7. Erythroblasts (Ebs), erythrocytic cellular abnormalities (ECA), and erythrocytic nuclear abnormalities (ENA) were assayed using peripheral erythrocytes of the sampled fishes...
May 21, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29774145/evaluation-of-attenuative-effect-of-tert-butylhydroquinone-against-diazinon-induced-oxidative-stress-on-hematological-indices-in-male-wistar-rats
#2
Saman Sargazi, Hamidreza Galavi, Sadegh Zarei
Diazinon is an organophosphate toxicant that has been identified to induce oxidative stress within biological systems through altering biochemical and hematological indices, by generating free radicals while deteriorating the cellular antioxidant defense system. The present study was designed to evaluate the effectiveness of tert-butylhydroquinone (TBHQ), a synthetic food additive, in serving as an antioxidant against sub-lethal diazinon-induced oxidative stress in male Wistar rats. Animals were randomly divided into 4 groups: Control (treated with corn oil as a vehicle), diazinon (10 mg/kg/day), TBHQ (0...
June 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29766032/serum-free-erythroid-differentiation-for-efficient-genetic-modification-and-high-level-adult-hemoglobin-production
#3
Naoya Uchida, Selami Demirci, Juan J Haro-Mora, Atsushi Fujita, Lydia N Raines, Matthew M Hsieh, John F Tisdale
In vitro erythroid differentiation from primary human cells is valuable to develop genetic strategies for hemoglobin disorders. However, current erythroid differentiation methods are encumbered by modest transduction rates and high baseline fetal hemoglobin production. In this study, we sought to improve both genetic modification and hemoglobin production among human erythroid cells in vitro . To model therapeutic strategies, we transduced human CD34+ cells and peripheral blood mononuclear cells (PBMCs) with lentiviral vectors and compared erythropoietin-based erythroid differentiation using fetal-bovine-serum-containing media and serum-free media...
June 15, 2018: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/29756477/anti-hyperglycemic-and-anti-inflammatory-activities-of-polyphenolic-rich-extract-of-syzygium-cumini-linn-leaves-in-alloxan-induced-diabetic-rats
#4
Basiru O Ajiboye, Oluwafemi A Ojo, Olivia S Akuboh, Okesola M Abiola, Olajumoke Idowu, Aliyu O Amuzat
In this study, anti-hyperglycemic and anti-inflammatory activities of polyphenolic-rich extract of Syzygium cumini leaves in alloxan-induced diabetic rats were determined. Diabetes was induced by a single intraperitoneal injection of alloxan (150 mg/kg body weight) in female Wistar rats. The rats were orally administered with 400 mg/kg free phenol, 400 mg/kg bound phenol, and 5 mg/kg metformin, respectively. On the 14th day of oral administration, the animals were sacrificed, anti-hyperglycemic and anti-inflammatory were assessed...
January 2018: Journal of evidence-based integrative medicine
https://www.readbyqxmd.com/read/29753681/quality-of-plasma-samples-and-bd-vacutainer-barricor-tubes-effects-of-centrifugation
#5
Andrea Padoan, Martina Zaninotto, Elisa Piva, Laura Sciacovelli, Ada Aita, Adriano Tasinato, Mario Plebani
BACKGROUNDS: The BD Vacutainer ® Barricor™ Plasma collection tube (BD Barricors) uses an innovative non-gel separation method. This study compared the plasma residual cell count (PRCC) obtained from BD Barricor and from BD PST II plasma tubes. METHODS: Four BD Barricors and one BD PST II were collected from 40 donors. BD PST II was centrifuged at 1300g/10 min, while the BD Barricors were centrifuged at 1800g/10 min, 4000g/3 min, 4000g/7 min and 4000g/15 min...
May 10, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29750167/prognostic-significance-of-blood-transfusion-in-elderly-patients-with-primary-diffuse-large-b-cell-lymphoma
#6
Liping Fan, Danhui Fu, Jinquan Hong, Haobo Huang, Wenqian He, Feng Zeng, Qiuyan Lin, Qianling Xie
The current study sought to evaluate whether blood transfusions affect survival of elderly patients with primary diffuse large B-cell lymphoma (DLBCL). A total of 104 patients aged 60 years and over were enrolled and divided into two groups: 24 patients who received transfusions and 80 patients who did not. Statistical analyses showed significant differences in LDH levels, platelet (Plt) counts, and hemoglobin (Hb) and albumin (Alb) levels between the two groups. Univariate analyses showed that LDH level ≥ 245 IU/L, cell of origin (germinal center/nongerminal center), and blood transfusion were associated with both overall survival (OS) and progression-free survival (PFS)...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29742788/-the-relevance-of-hemolysis-in-anesthesia-and-intensive-care-medicine
#7
Jan A Graw, David M Baron, Roland C E Francis
Hemolysis leads to an increase of circulating intravascular cell-free hemoglobin. Increased plasma concentrations of cell-free hemoglobin are relevant in critically ill patients because cell-free hemoglobin causes vasoconstriction by depletion of endothelial nitric oxide, oxidative stress, and inflammation. Furthermore, cell-free hemoglobin contributes to tissue injuries such as renal failure and intestinal mucosa damage after cardiac surgery. High concentrations of cell-free hemoglobin are associated with an increased mortality in patients with sepsis...
April 2018: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/29740581/effects-of-laser-radiation-on-mitochondria-and-mitochondrial-proteins-subjected-to-nitric-oxide
#8
REVIEW
Anatoly N Osipov, Tatiana V Machneva, Evgeny A Buravlev, Yury A Vladimirov
The biological roles of heme and nonheme nitrosyl complexes in physiological and pathophysiological conditions as metabolic key players are considered in this study. Two main physiological functions of protein nitrosyl complexes are discussed-(1) a depot and potential source of free nitric oxide (NO) and (2) a controller of crucial metabolic processes. The first function is realized through the photolysis of nitrosyl complexes (of hemoglobin, cytochrome c , or mitochondrial iron-sulfur proteins). This reaction produces free NO and subsequent events are due to the NO physiological functions...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29731543/electrical-impedance-microflow-cytometry-with-oxygen-control-for-detection-of-sickle-cells
#9
Jia Liu, Yuhao Qiang, Ofelia Alvarez, E Du
Polymerization of intracellular sickle hemoglobin induced by low oxygen tension has been recognized as a primary determinant of the pathophysiologic manifestations in sickle cell disease. Existing flow cytometry techniques for detection of sickle cells are typically based on fluorescence markers or cellular morphological analysis. Using microfluidics and electrical impedance spectroscopy, we develop a new, label-free flow cytometry for non-invasive measurement of single cells under controlled oxygen level. We demonstrate the capability of this new technique by determining the electrical impedance differential of normal red blood cells obtained from a healthy donor and sickle cells obtained from three sickle cell patients, under normoxic and hypoxic conditions and at three different electrical frequencies, 156 kHz, 500 kHz and 3 MHz...
February 2018: Sensors and Actuators. B, Chemical
https://www.readbyqxmd.com/read/29726019/speed-modulation-of-the-heartware-hvad-to-assess-in-vitro-hemocompatibility-of-pulsatile-and-continuous-flow-regimes-in-a-rotary-blood-pump
#10
Jarod T Horobin, Michael J Simmonds, Deepika Nandakumar, Shaun D Gregory, Geoff Tansley, Jo P Pauls, Angela Girnghuber, Nicoletta Balletti, John F Fraser
Although rotary blood pumps (RBPs) sustain life, blood exposure to continuous supra-physiological shear stress induces adverse effects (e.g., thromboembolism); thus, pulsatile flow in RBPs represents a potential solution. The present study introduced pulsatile flow to the HeartWare HVAD using a custom-built controller and compared hemocompatibility biomarkers (i.e., platelet aggregation, concentrations for ADAMTS13, von Willebrand factor (vWf), and free-hemoglobin in plasma (pfHb), red blood cell (RBC) deformability, and RBC-nitric oxide synthase (NOS) activity) between continuous and pulsatile flow in a blood circulation loop over 5 h...
May 3, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29723064/cell-free-hemoglobin-in-the-fetoplacental-circulation-a-novel-cause-of-fetal-growth-restriction
#11
Adam Brook, Annie Hoaksey, Rekha Gurung, Edward E C Yoong, Rosanna Sneyd, Georgia C Baynes, Helen Bischof, Sarah Jones, Lucy E Higgins, Carolyn Jones, Susan L Greenwood, Rebecca L Jones, Magnus Gram, Ingrid Lang, Gernot Desoye, Jenny Myers, Henning Schneider, Stefan R Hansson, Ian P Crocker, Paul Brownbill
Cell free hemoglobin impairs vascular function and blood flow in adult cardiovascular disease. In this study, we investigated the hypothesis that free fetal hemoglobin (fHbF) compromises vascular integrity and function in the fetoplacental circulation, contributing to the increased vascular resistance associated with fetal growth restriction (FGR). Women with normal and FGR pregnancies were recruited and their placentas collected freshly postpartum. FGR fetal capillaries showed evidence of erythrocyte vascular packing and extravasation...
May 3, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29721063/photoacoustic-imaging-as-an-early-biomarker-of-radio-therapeutic-efficacy-in-head-and-neck-cancer
#12
Laurie J Rich, Austin Miller, Anurag K Singh, Mukund Seshadri
The negative impact of tumor hypoxia on radiotherapeutic efficacy is well recognized. However, an easy to use, reliable imaging method for assessment of tumor oxygenation in routine clinical practice remains elusive. Photoacoustic imaging (PAI) is a relatively new imaging technique that utilizes a combination of light and ultrasound (US) to enable functional imaging of tumor hemodynamic characteristics in vivo . Several clinical trials are currently evaluating the utility of PAI in cancer detection for breast, thyroid, and prostate cancer...
2018: Theranostics
https://www.readbyqxmd.com/read/29720197/the-prognostic-role-of-hemoglobin-levels-in-patients-undergoing-concurrent-chemo-radiation-for-anal-cancer
#13
Pierfrancesco Franco, Francesco Montagnani, Francesca Arcadipane, Chiara Casadei, Kalliopi Andrikou, Stefania Martini, Giuseppe Carlo Iorio, Mario Scartozzi, Massimiliano Mistrangelo, Lorenzo Fornaro, Paola Cassoni, Stefano Cascinu, Umberto Ricardi, Andrea Casadei Gardini
BACKGROUND: Concurrent chemo-radiation (CT-RT) is a standard therapy for squamous cell carcinoma of anal canal. Different clinical and biological factors may potentially affect outcome. We investigated the prognostic role of baseline hemoglobin (Hb) in a cohort of anal cancer patients submitted to CT-RT with 5-fluorouracil and mitomycin C. METHODS: Up to 161 patients with clinical stage T1-T4/N0-N3/M0 were treated. Response was assessed at 6 weeks and thereafter at 3, 6 and 12 months...
May 2, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29708883/graves-disease-following-allogenic-hematopoietic-stem-cell-transplantation-for-severe-aplastic-anemia-case-report-and-literature-review
#14
Ahu Paketçi, Korcan Demir, Özlem Tüfekçi, Sezer Acar, Ayhan Abacı, Şebnem Yılmaz, Ece Böber
BACKGROUND: Similar autoimmune processes (defective T-cell function) take place during the pathogenesis of aplastic anemia (AA) and Graves' disease (GD). Antithyroid drugs used for the management of GD may induce AA and GD may occur following treatment of severe aplastic anemia (SAA). CASE PRESENTATION: Clinical and laboratory investigations were performed for an 11-year-and-2-month-old girl who was referred for bilateral exophthalmus and abnormal thyroid function tests...
April 25, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29707577/association-of-androgen-excess-with-glucose-intolerance-in-women-with-polycystic-ovary-syndrome
#15
Bingjie Zhang, Jing Wang, Shanmei Shen, Jiayi Liu, Jie Sun, Tianwei Gu, Xiao Ye, Dalong Zhu, Yan Bi
Women with polycystic ovary syndrome (PCOS) show high prevalence of glucose intolerance. This study aimed to investigate the association of androgen excess with glucose intolerance in PCOS. A total of 378 women with PCOS participated in the study. Free androgen index (FAI) was selected as indicator of hyperandrogenism. Insulin sensitivity was assessed by 1/homeostasis model assessment of insulin resistance (1/HOMA-IR) and Matsuda insulin sensitivity index (ISIM ); β -cell function was assessed by disposition index (DI)...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29694434/haptoglobin-and-hemopexin-inhibit-vaso-occlusion-and-inflammation-in-murine-sickle-cell-disease-role-of-heme-oxygenase-1-induction
#16
John D Belcher, Chunsheng Chen, Julia Nguyen, Fuad Abdulla, Ping Zhang, Hao Nguyen, Phong Nguyen, Trevor Killeen, Sylvia M Miescher, Nathan Brinkman, Karl A Nath, Clifford J Steer, Gregory M Vercellotti
During hemolysis, hemoglobin and heme released from red blood cells promote oxidative stress, inflammation and thrombosis. Plasma haptoglobin and hemopexin scavenge free hemoglobin and heme, respectively, but can be depleted in hemolytic states. Haptoglobin and hemopexin supplementation protect tissues, including the vasculature, liver and kidneys. It is widely assumed that these protective effects are due primarily to hemoglobin and heme clearance from the vasculature. However, this simple assumption does not account for the consequent cytoprotective adaptation seen in cells and organs...
2018: PloS One
https://www.readbyqxmd.com/read/29689364/reversible-renal-glomerular-dysfunction-in-guinea-pigs-exposed-to-glutaraldehyde-polymerized-cell-free-hemoglobin
#17
Xiaoyuan Zhang, Matthew C Williams, Otgonchimeg Rentsendorj, Felice D'Agnillo
Chemically modified hemoglobin (Hb)-based oxygen carriers are promising oxygen replacement therapeutics however their potential renal effects are not fully understood. Using a guinea pig exchange transfusion model, we examined the effects of glutaraldehyde-polymerized bovine hemoglobin (HbG) on the permeability and integrity of the glomerular filtration barrier (GFB), which is comprised of podocytes, fenestrated endothelium, and the glomerular basement membrane. HbG induced marked proteinuria characterized in part by the loss of high molecular weight proteins, including albumin, immunoglobulin, and transferrin, at 4 and 12 h post-infusion that resolved by 72 h...
April 22, 2018: Toxicology
https://www.readbyqxmd.com/read/29684306/does-sphenopalatine-ganglion-block-improve-pain-control-and-intraoperative-hemodynamics-in-children-undergoing-palatoplasty-a-randomized-controlled-trial
#18
Anantanarayanan Parameswaran, Muruganand V Ganeshmurthy, Yashoda Ashok, Manikandhan Ramanathan, Anthony F Markus, Hermann F Sailer
PURPOSE: Children undergoing cleft palate repair have pain, dysphagia, and wound irritation in the immediate postoperative phase that may compromise surgical outcomes. This trial evaluates the efficacy of the sphenopalatine ganglion block (SPGB) in optimizing intraoperative hemodynamics and postoperative analgesia in children undergoing primary palatoplasty. MATERIALS AND METHODS: The study was designed as a prospective, double-blind, randomized controlled trial comparing the use of SPGB with general anesthesia (GA) (study group) versus the use of only GA (control group)...
March 30, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29680411/myeloid-sarcoma-predicts-superior-outcome-in-pediatric-aml-can-cytogenetics-solve-the-puzzle
#19
Raja Pramanik, Anudishi Tyagi, Anita Chopra, Akash Kumar, Sreenivas Vishnubhatla, Sameer Bakhshi
BACKGROUND: The purpose of our study was to evaluate the clinical, cytogenetic, and molecular features, and survival outcomes in patients with acute myeloid leukemia (AML) with myeloid sarcoma (MS) and compare them with patients with AML without MS. PATIENTS AND METHODS: This was a retrospective analysis of de novo pediatric AML patients with or without MS diagnosed at our cancer center between June 2003 and June 2016. RESULTS: MS was present in 121 of 570 (21...
March 31, 2018: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/29675104/prognostic-value-of-bone-marrow-fdg-uptake-pattern-of-pet-ct-in-newly-diagnosed-diffuse-large-b-cell-lymphoma
#20
Yumei Chen, Mingge Zhou, Jianjun Liu, Gang Huang
Purpose: The value of 18 F-fluorodeoxyglucose positron emission tomography /computed tomography (18 F-FDG PET/CT) in assessing bone marrow involvement (BMI) of lymphoma remains controversial. The present study aims to evaluate the prognostic meaning of bone marrow FDG uptake pattern in PET/CT of newly diagnosed diffuse large B-cell lymphoma (DLBCL) patients. Materials and Methods: 193 newly diagnosed DLBCL patients were retrospectively analyzed. All patients received 6-8 cycles of rituximab plus cyclophosphamide, doxorubicin, vincristine and prednisone (R-CHOP)...
2018: Journal of Cancer
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