Extraction of erythrocyte enzymes for the preparation of polyhemoglobin-catalase-superoxide dismutase.

Artif Cells Blood Substit Immobil Biotechnol

Artificial Cells & Organs Research Centre, Department of Physiology, McGill University, Montreal, Quebec, Canada.

Published: October 2009

In sustained severe ischemia, reperfusion with oxygen carriers may result in ischemia-reperfusion injuries because of the release of damaging oxygen radicals. A nanobiotechnology-based polyhemogloin-calatase-superoxide dismutase can prevent this because the oxygen carrier, polyhemoglobin, is linked to antioxidant enzymes, catalase and superoxide dismutase. However, these antioxidant enzymes come from nonhuman sources and recombinant human enzymes are expensive. This paper describes our study on extracting these enzymes from red blood cells and analyzing the amount of enzymes needed for adequate protection from ischemia-reperfusion.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3518480PMC
http://dx.doi.org/10.1080/10731190902742240DOI Listing

Publication Analysis

Top Keywords

antioxidant enzymes
8
enzymes
6
extraction erythrocyte
4
erythrocyte enzymes
4
enzymes preparation
4
preparation polyhemoglobin-catalase-superoxide
4
polyhemoglobin-catalase-superoxide dismutase
4
dismutase sustained
4
sustained severe
4
severe ischemia
4

Similar Publications

Arginine metabolism in myeloid cells in health and disease.

Semin Immunopathol

January 2025

Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.

Metabolic flexibility is key for the function of myeloid cells. Arginine metabolism is integral to the regulation of myeloid cell responses. Nitric oxide (NO) production from arginine is vital for the antimicrobial and pro-inflammatory responses.

View Article and Find Full Text PDF

Acute B-lymphoblastic leukemia (B-ALL) is a highly heterogeneous hematologic malignancy, characterized by significant molecular differences among patients as the disease progresses. While the PI3K-Akt signaling pathway and metabolic reprogramming are known to play crucial roles in B-ALL, the interactions between lipid metabolism, immune pathways, and drug resistance remain unclear. In this study, we performed multi-omics analysis on different patient cohorts (newly diagnosed, relapsed, standard-risk, and poor-risk) to investigate the molecular characteristics associated with metabolism, signaling pathways, and immune regulation in B-ALL.

View Article and Find Full Text PDF

Nano-biochar considers a versatile and valuable sorbent to enhance plant productivity by improving soil environment and emerged as a novel solution for environmental remediation and sustainable agriculture in modern era. In this study, roles of foliar applied nanobiochar colloidal solution (NBS) on salt stressed tomato plants were investigated. For this purpose, NBS was applied (0%, 1% 3% and 5%) on two groups of plants (control 0 mM and salt stress 60 mM).

View Article and Find Full Text PDF

Epidemiological evidence has shown that the regular ingestion of vegetables and fruits is associated with reduced risk of developing chronic diseases. The introduction of the 3Rs (replacement, reduction, and refinement) principle into animal experiments has led to the use of valid, cost-effective, and efficient alternative and complementary invertebrate animal models which are simpler and lower in the phylogenetic hierarchy. Caenorhabditis elegans (C.

View Article and Find Full Text PDF

Pifithrin-μ sensitizes mTOR-activated liver cancer to sorafenib treatment.

Cell Death Dis

January 2025

Department of Organ Transplantation and Hepatobiliary Surgery, Key Laboratory of Organ Transplantation of Liaoning Province, The First Hospital of China Medical University, Shenyang, China.

TSC2, a suppressor of mTOR, is inactivated in up to 20% of HBV-associated liver cancer. This subtype of liver cancer is associated with aggressive behavior and early recurrence after hepatectomy. Being the first targeted regimen for advanced liver cancer, sorafenib has limited efficacy in HBV-positive patients.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!