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Oxidized hemoglobin

Mahmood Rasool, Arif Malik, Uzma Jabbar, Irshad Begum, Mahmood H Qazi, Muhammad Asif, Muhammad I Naseer, Shakeel A Ansari, Jummanah Jarullah, Absarul Haque, Mohammad S Jamal
To check the amount of cellular damage caused by serial transfusions of blood in thalassemia patients.  Methods: A cross-sectional study was conducted in the University of Lahore, Lahore, Pakistan between August 2012 and December 2012. A total of 43 thalassemia patients underwent at least 10 blood transfusions. Comprehensive biochemical analysis of blood was performed to record the levels of creatinine, urea, uric acid, albumin, liver function tests, malondialdehyde (MDA), and ferritin.  Results: Serum creatinine (0...
November 2016: Saudi Medical Journal
Isaac Julius Asiedu-Gyekye, Charles Antwi-Boasiako, Seth Oppong, Stella Arthur, Joseph Edusei Sarkodie
BACKGROUND: Unsweetened natural cocoa powder (UNCP), prepared after removal of the cocoa butter, is a common beverage in Ghana. It possesses antimalarial prophylactic property and has a beneficial effect on blood components. AIM: The aim of this study was to determine whether regular dietary supplement of UNCP mitigates high-dose (HD) artemether-lumefantrine (A-L)-induced hematological disorders and to determine the effect on nitric oxide (NO) levels. MATERIALS AND METHODS: Adult male guinea pigs (300 g - 350 g) were randomly divided into 5 groups of 6 guinea pigs each...
September 2016: Journal of Intercultural Ethnopharmacology
Christopher Didigwu Nwani, Gregory Ejike Odo, Alfreda O Nwadinigwe, Christopher C Onyeke, Chinedu Ifeanyi Atama, Godwin Ngwu, Stanley N Oluah, Juliana Adimonye Ukonze, Bridget Chidi A Ezeibe
Albendazole (ABZ) is a typical broad-spectrum benzimidazole drug used for the treatment of parasitic worm infestations in humans and animals. The present study investigated the oxidative stress biomarkers and hematological parameters in juvenile African Catfish (also known as Sharptooth Catfish) Clarias gariepinus exposed to ABZ for 96 h. Fish were exposed to 0 (control) 20, 40, and 60 mg/L ABZ. The liver and gill tissues were sampled at regular intervals of 24 h, and the results showed significant concentration- and time-dependent increases in the values of lipid peroxidation but reductions in glutathione peroxidase, catalase, superoxide dismutase, and glutathione reductase in both tissues...
December 2016: Journal of Aquatic Animal Health
Mahnaz Zarei, Zahra Farahnak, Mohammad Javad Hosseinzadeh-Attar, Mohammad Hassan Javanbakht, Payam Hosseinzadeh, Hoda Derakhshanian, Payam Farahbakhsh-Farsi, Mahmoud Djalali
BACKGROUND: This study was designed to compare lipid peroxidation and antioxidant enzymes activity in Type 2 diabetes patients with good or weak glycemic control. METHODS: In this case-control study, 62 Type 2 diabetic patients with glycated hemoglobin (HbA1c) between 6 and 8 were enrolled as the controlled group and 55 patients with HbA1c > 8 were selected as an uncontrolled group. Patients were all referred to Iranian Diabetes Association in Tehran, Iran, from 2010 onward...
May 2016: ARYA Atherosclerosis
Evelien Kuiper-Prins, Gerthe Femke Kerkhof, Catharina Gertrudis Maria Reijnen, Pieter Jan van Dijken
A 12-day-old boy presented with duskiness 4 h after circumcision with local anesthesia: infiltration with lidocaine (6 mL 1 %) and topical EMLA cream (2.5 % lidocaine/2.5 % prilocaine). He had no respiratory distress, but a strikingly dark skin. A blood sample showed dark, chocolate brown blood with a raised methemoglobin of 49.8 % (normal <1.5 %) and a lactate of 10 mmol/L. A diagnosis of methemoglobinemia was made. The patient was treated with oxygen administration, but methemoglobin concentration was still 45 % 1 h later...
December 2016: Drug Saf Case Rep
Takashi Kuwano, Shin-Ichiro Miura, Kenji Norimatsu, Tadaaki Arimura, Yuhei Shiga, Sayo Tomita, Asuka Nakayama, Yoshino Matsuo, Satoshi Imaizumi, Keijiro Saku
Patients with type 2 diabetes mellitus (DM) exhibit modification of high-density lipoprotein (HDL), which is likely to have an important role in the development of atherosclerotic cardiovascular disease (ASCVD). Excess production of aldosterone (Ald) results in hypertension as well as ASCVD. However, the biological activity of modified HDL in steroidogenesis is not clear. We measured the accumulation of thiobarbituric acid-reactive substances (TBARSs) and Nɛ-(carboxymethyl)lysine (CML) levels (markers of oxidation and glycoxidation, respectively) in isolated HDL from 41 patients with type 2 diabetes mellitus (DM group) and 41 age- and gender-matched patients in a non-DM group...
October 13, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
Zhiyong Guo, Yue Zhang, Dan-Dan Zhang, Yang Shu, Xu-Wei Chen, Jian-Hua Wang
A novel strategy for the preparation of magnetic nanospheres encapsulated by mesoporous copper oxide shell, shortly termed as Fe3O4@mCuO, is reported via the calcination of Cu(NH3)4(NO3)2 into continuous mesoporous CuO shell onto the surface of Fe3O4 nanoparticles. The magnetic nanospheres are characterized to possess stable core-shell structure with a crystalline mesoporous CuO layer, exhibiting a CuO loading content of 25.2±1.1% along with a favorable magnetic susceptibility. Fe3O4@mCuO nanospheres exhibit favorable selectivity on the adsorption of hemoglobin with a high adsorption capacity of up to 1470...
October 12, 2016: ACS Applied Materials & Interfaces
Rehab M El-Gharabawy, Amira S Ahmed, Amal H Al-Najjar
PURPOSE: The objective of this study was to evaluate the role of nitroglycerin in the pathogenesis of cataract. DESIGN: Prospective study. PATIENT AND METHODS: This study was performed in adults from tertiary Saudi Arabian hospitals (34 males and 26 females in each group, aged from 40 to 60 years), who were divided into four groups with an equal number of subjects (control group, cardiac group, idiopathic cataract group, and a group of cardiac patients using nitroglycerin and with cataracts)...
2016: Therapeutics and Clinical Risk Management
Qingshu Wang, Ling Hu, Yu Hu, Gu Gong, Hua Tan, Li Deng, Xiaoqin Sun, Xiaobo Yi, Yangyang Sun, Wei Wu, Tao Li
OBJECTIVE: To investigate the therapeutic effect of carbon monoxide (CO) on high-altitude hypoxia-induced cardiac damage. METHODS: Forty male C57BL/6 mice were randomly divided into 4 groups. The mice were exposed to normoxia or simulated 5,500-meter high-altitude hypoxia in a hypobaric chamber for 7 days. During the first 3 days, the mice were pretreated with CO-saturated hemoglobin (Hb)-based oxygen carrier (CO-HBOC), oxygen-saturated hemoglobin-based oxygen carrier (O2-HBOC) at a dose of 0...
October 12, 2016: Cardiology
Xiang Ji, Yimin Feng, Hui Tian, Wei Meng, Weiling Wang, Na Liu, Jun Zhang, Lingshu Wang, Jian Wang, Haiqing Gao
In sickle cell disease (SCD), the inflammatory properties of high-density lipoprotein (HDL) can be changed by cell-free hemoglobin (Hb), which is released into the blood during hemolysis. Hb in the plasma of SCD patients or mice can bind with HDL specifically inducing an inflammatory reaction. In our study, we found increased amounts of inflammatory factor proteins in the chronic oxidative state of SCD with higher levels of Hb, haptoglobin (Hp) and hemopexin (Hx) in the apolipoprotein A-I (ApoA-1) particles of HDL and the role of HDL is changed from being anti-inflammatory to proinflammatory...
2016: PloS One
Nara Aline Costa, Ana Lúcia Gut, Paula Schmidt Azevedo, Suzana Erico Tanni, Natália Baraldi Cunha, Eloá Siqueira Magalhães, Graziela Biude Silva, Bertha Furlan Polegato, Leonardo Antonio Mamede Zornoff, Sergio Alberto Rupp de Paiva, André Luís Balbi, Daniela Ponce, Marcos Ferreira Minicucci
BACKGROUND: Oxidative stress is a key feature of sepsis and could be a common pathophysiological pathway between septic shock and acute kidney injury (AKI) Our objective was to evaluate the erythrocyte superoxide dismutase (SOD1) activity as predictor of AKI in patients with septic shock. METHODS: This is a prospective observational study that evaluated 175 consecutive patients over the age of 18 years with septic shock upon intensive care unit (ICU) admission...
December 2016: Annals of Intensive Care
Antonis Goulas, Dimitrios Agapakis, Athanassios Apostolidis, Dimitra Gouda, Sotirios Anastassiadis, Christina Trakatelli, Christos Savopoulos, Apostolos I Hatzitolios
Catalase represents perhaps the most effective antioxidant defense in the body under conditions of increased oxidative stress, and rs1001179 (CAT-262C >T) is its most extensively studied gene polymorphism. Using an established PCR-RFLP method for genotyping, we examined the association of rs1001179 with glycated hemoglobin (HbA1c) and plasma lipids using univariate analyses with age, sex, body mass index (BMI), smoking, and alcohol abuse as covariates, in a group of dyslipidemic patients from northern Greece...
October 4, 2016: Biochemical Genetics
Kirstine Lindhardt Saederup, Kristian Stoedkilde, Jonas Heilskov Graversen, Claire F Dickson, Anders Etzerodt, Soren Werner Karlskov Hansen, Angela Fago, David Gell, Christian Brix Folsted Andersen, Soren Kragh Moestrup
Hemolysis is a complication in septic infections with Staphylococcus aureus, which utilizes the released hemoglobin (Hb) as an iron source. S. aureus can acquire heme in vitro from Hb by a heme-sequestering mechanism that involves proteins from the S. aureus iron-regulated surface determinant (Isd) system. However, the host has its own mechanism to recapture the free Hb via haptoglobin (Hp) binding and uptake of Hb-Hp by the CD163 receptor in macrophages. It has so far remained unclear how the Isd system competes with this host iron recycling system in situ to obtain the important nutrient...
September 28, 2016: Journal of Biological Chemistry
Simone B Bayer, Felicia Low, Mark B Hampton, Christine C Winterbourn
Peroxiredoxin 2 (Prx2) is an abundant antioxidant protein in erythrocytes that protects against hemolytic anemia resulting from hemoglobin oxidation and Heinz body formation. A small fraction of Prx2 is bound to the cell membrane, but the mechanism and relevance of binding are not clear. We have investigated Prx2 interactions with the erythrocyte membrane and oxidized hemoglobin and whether these interactions are dependent on Prx2 redox state. Membrane binding of Prx2 in erythrocytes decreased when the cells were treated with H2O2, but studies with purified Prx2 and isolated ghosts showed that the interaction was independent of Prx2 redox state...
September 28, 2016: Free Radical Research
Hadi Ansarihadipour, Mohamadreza Bayatiani
BACKGROUND: Electromagnetic fields (EMF) are associated with oxidative stress, which is in turn associated with reactive oxygen species (ROS), anemia, and hypoxia. OBJECTIVES: This study focused on the synergistic effects of lead ions and EMF on oxidative modifications in hemoglobin (Hb) and plasma proteins. PATIENTS AND METHODS: In this experimental study, the blood samples were obtained from age- and sex-matched healthy subjects at Arak University of Medical Sciences, Arak, Iran...
July 2016: Iranian Red Crescent Medical Journal
Christian Brix Folsted Andersen, Kristian Stødkilde, Kirstine Lindhart Sæderup, Anne Kuhlee, Stefan Raunser, Jonas Heilskov Graversen, Søren Kragh Moestrup
SIGNIFICANCE: Haptoglobin (Hp) is an abundant human plasma protein that tightly captures hemoglobin (Hb) during hemolysis. The Hb-Hp complex formation reduces the oxidative properties of heme/Hb and promotes recognition by the macrophage receptor CD163. This leads to Hb-Hp breakdown and heme catabolism by heme oxygenase. Gene duplications of a part of or the entire Hp gene in the primate evolution has led to variant Hp gene products that collectively may be designated 'the haptoglobins' as they all bind Hb...
September 21, 2016: Antioxidants & Redox Signaling
Rhoda Elison Hirsch, Nathawut Sibmooh, Suthat Fucharoen, Joel M Friedman
Oxidative stress and the generation of free radicals are fundamental in initiating pathophysiological mechanisms leading to an inflammatory cascade resulting in high rates of morbidity and death from many inherited point mutation derived hemoglobinopathies. Hemoglobin (Hb)E is the most common point mutation worldwide. The β<sup>E</sup>-globin gene is found in greatest frequency in Southeast Asia, including Thailand, Malaysia, Indonesia, Vietnam, Cambodia, and Laos. With the wave of worldwide migration, it is entering the gene pool of diverse populations with greater consequences than expected...
September 21, 2016: Antioxidants & Redox Signaling
Ali Sharif, Muhammad Ashraf, Aqeel Javeed, Aftab Ahmed Anjum, Muhammad Furqan Akhtar, Bushra Akhtar, Ammara Saleem
Water pollution has been a major concern for agrarian societies like Pakistan. Pharmaceutical industries are amongst the foremost contributor to industrial waste. Present study addresses the generation of oxidative stress caused by 2 months exposure to pharmaceutical wastewater in rats and their response to oral treatment with vitamin E, a potent antioxidant. The rats were randomized into five groups (n = 5) named as negative control, pharmaceutical wastewater (PEW) 100 %, PEW 10 %, PEW 1 %, and PEW 100 % + vitamin E...
September 19, 2016: Environmental Science and Pollution Research International
Angelo D'Alessandro, Travis Nemkov, Kaiqi Sun, Hong Liu, Anren Song, Andrew A Monte, Andrew W Subudhi, Andrew T Lovering, Daniel Dvorkin, Colleen G Julian, Christopher G Kevil, Gopi K Kolluru, Sruti Shiva, Mark T Gladwin, Yang Xia, Kirk C Hansen, Robert C Roach
Red blood cells (RBCs) are key players in systemic oxygen transport. RBCs respond to in vitro hypoxia through the so-called oxygen-dependent metabolic regulation, which involves the competitive binding of deoxyhemoglobin and glycolytic enzymes to the N-terminal cytosolic domain of band 3. This mechanism promotes the accumulation of 2,3-DPG, stabilizing the deoxygenated state of hemoglobin, and cytosol acidification, triggering oxygen off-loading through the Bohr effect. Despite in vitro studies, in vivo adaptations to hypoxia have not yet been completely elucidated...
October 7, 2016: Journal of Proteome Research
G S Dolci, H Z Rosa, R C S Barcelos, L T Vey, A Santos, P DallaVechia, C Bizzi, M A Cunha, B Baldisserotto, M E Burger
This study investigated if hypoxia acclimation modifies the hematological and oxidative profiles in tissues of Mn-exposed silver catfish (Rhamdia quelen), and if such modifications persist upon subsequent reoxygenation. Silver catfish acclimated to hypoxia (~3mgL(-1)) for 10days and subsequently exposed to Mn (~8.1mgL(-1)) for additional 10days exhibited lower Mn accumulation in plasma, liver and kidney, even after reoxygenation, as compared to normoxia-acclimated fish. Hypoxia acclimation increased per se red blood cells count and hematocrit, suggesting adaptations under hypoxia, while the reoxygenation process was also related to increased hematocrit and hemoglobin per se...
September 17, 2016: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
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