objectives: anemia is prevalent in heart failures and is an independent risk factor for adverse clinical outcomes in patients with chf. the aim of the present study was to determine the prevalence of anemia in elderly with systolic heart failure hospitalized in alborz hospital of karaj in 2009. methods & materials: this is a descriptive retrospective study that reviewed 154 medical records of e...

According to Khan et al. [Khan, A. U., Kovacic, D., Kolbanovskiy, A., Desai, M., Frenkel, K. & Geacintov, N. E. (2000) Proc. Natl. Acad. Sci. USA 97, 2984–2989], peroxynitrite (ONOO2) decomposes after protonation to singlet oxygen (DgO2) and singlet oxonitrate (nitroxyl, 1NO2) in high yield. They claimed to have observed nitrosyl hemoglobin from the reaction of NO2 with methemoglobin; however, ...

BACKGROUND Patients undergoing cementless total knee arthroplasty (TKA) sometimes suffer large blood loss. In a retrospective study, we explored whether postoperative intra-articular retrograde injection of tranexamic acid (TA) and leaving a drain clamp in place for 1 h reduced blood loss. PATIENTS AND METHODS Patients (n = 140) treated with unilateral primary cementless TKA (posterior crucia...

Whole blood samples of patients with various forms of alpha thalassemia including hemoglobin H disease, alpha thalassemia trait, and the "silent carrier" state were incubated with leucine-(14)C for definition of relative rates of production of alpha and beta chains in these disorders. The chains were separated by carboxymethyl cellulose chromatography in the presence of 8 M urea and dithiothrei...

Transgenic sickle mice expressing β(S) hemoglobin have activated vascular endothelium in multiple organs that exhibits enhanced expression of NF-ĸB and adhesion molecules and promotes microvascular stasis in sickle, but not normal, mice in response to hypoxia/reoxygenation (H/R), or heme. Induction of heme oxygenase-1 (HO-1) or administration of its products, carbon monoxide (CO) or biliverdin,...

BACKGROUND Helicobacter pylori infection may play a role in iron-deficiency anemia. METHODS In 52 patients with iron-deficiency anemia, H. pylori status was determined using rapid urease test and histology. H. pylori -positive patients were randomly assigned to receive anti- H. pylori treatment either immediately (Group I) or after a delay of one month (Group II); in addition, all patients re...

The ability to bind extracellular matrix proteins is a critical virulence determinant for skin pathogens. Haemophilus ducreyi, the etiological agent of the genital ulcer disease chancroid, binds extracellular matrix components, including fibronectin (FN). We investigated H. ducreyi FN binding and report several important findings about this interaction. First, FN binding by H. ducreyi was great...

A 60-year-old male patient presented with jaundice. Initial investigations showed anemia, indirect hyperbilirubinemia, raised Lactic Dehydrogenase (LDH) and increased reticulocyte count suggestive of hemolysis. Considering hemolysis low MCV and basophilic stippling on peripheral film, hemoglobin electrophoresis was done that showed Haemoglobin H (15.5%) that in the absence of family history was...

Most ray-finned fishes possess a unique system for retinal oxygen delivery, where intracellular acidification of red blood cells (RBCs) in the capillaries induces offloading from pH-sensitive hemoglobin. A countercurrent vascular network, choroid rete mirabile, posterior to retina augments this “oxygen-secretory” mechanism and confers PO2 values that can exceed 1300 mmHg some species. We hypoth...

Haemophilus influenzae can utilize different protein-bound forms of heme for growth in vitro. A previous study (I. Maciver, J. L. Latimer, H. H. Liem, U. Muller-Eberhard, Z. Hrkal, and E. J. Hansen. Infect. Immun. 64:3703-3712, 1996) indicated that nontypeable H. influenzae (NTHI) strain TN106 expressed a protein that bound hemoglobin-haptoglobin and was encoded by an open reading frame (ORF) t...