Feasibility of Sijunzi Tang (Chinese medicine) to enhance protein disulfide isomerase activities for reactivating malate dehydrogenase deactivated by polycyclic aromatic hydrocarbons

• Published in: Environmental science and pollution research international Vol. 28; no. 20; pp. 25116 - 25123
• Main Authors: Leung, Ho Man, Kwok, Francis Siu Lai, Mo, Wing Yin, Cheung, Kwai Chung, Yue, Yik Kit, Wong, Yee Keung, Au, Chi Kin, Tsui, Martin Tsz Ki, Yung, Ken Kin Lam
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2021; Springer Nature B.V
• Subjects: Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Carcinogens; Deactivation; Dehydrogenase; Dehydrogenases; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental science; Enzymatic activity; Enzyme activity; Enzymes; Herbal medicine; Liver; Malate dehydrogenase; Medicinal plants; Medicine; Organic chemistry; Plant tissues; Polycyclic aromatic hydrocarbons; Protein disulfide-isomerase; Proteins; Purification; Research Article; Waste Water Technology; Water Management; Water Pollution Control; Malate dehydrogenase (MDH); Protein disulfide isomerase (PDI); Polycyclic aromatic hydrocarbons (PAHs); Glutathione reductase assay; Sijunzi Tang
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-018-3230-5

The objective of this research is to investigate the enzymatic activities between protein disulfide isomerase (PDI) found in animals and plants and the properties found in a commonly used Chinese medicine called Sijunzi Tang . During the investigation, PDI, which is a monomer with a molecular mass of 57.0 kDa, was used to reactivate malate dehydrogenase (MDH). However, with the interference of polycyclic aromatic hydrocarbons (PAHs), evidence indicates that such chemicals are carcinogenic, mutagenic, and toxic to humans. The enzymatic activity of PDI found in animal’s liver and plant was 1657 folds of purification; 0.284 unit/mg of enzyme activity, and 5694.4 folds of purification; 1.00 unit/mg of enzyme activity, respectively. PDI extracted in treated animal and plant tissue revealed 2.40% and 80.44% of regaining MDH enzymatic activity, respectively. Although in its initial phase of investigation, it is assumed that the properties found in Sijunzi Tang can help regain enzymatic activity in those affected by xenobiotic substances, thus, making it a potential ingredient in assisting with PDI functions.