Juglone (5-hydroxy-1,4-naphthoquinone) has been identified in organs of many plant species within Juglandaceae family. This secondary metabolite is considered as a highly bioactive substance that functions as direct oxidant stimulating the production of reactive oxygen species (ROS) in acceptor plants. Glutathione transferases (GSTs, E.C.2.5.1.18) represent an important group of cytoprotective ...

The parvulin peptidyl-prolyl isomerase Pin1 catalyzes cis-trans isomerization of p(S/T)-P bonds and might alter conformation and function of client proteins. Since the trans conformation of p(S/T)-P bonds is preferred by protein phosphatase 2A (PP2A), Pin1 may facilitate PP2A-mediated dephosphorylation. Juglone irreversibly inhibits parvulins and is often used to study the function of Pin1 in v...

We investigated whether juglone is the only allelochemical in a leaf extract from walnut (Juglans regia L.). This was achieved through comparisons of effects pure (1 mM, 100 μM, 10 μM control juglone) and J. (prepared as 1 on seed germination, seedling growth, secondary metabolism selected crop vegetables. Two treatments were also applied, extraction medium water. For inhibition S. lycopersicum...

The proportion of foodborne disease caused by pathogenic microorganisms is rising worldwide, with staphylococcal food poisoning being one of the main causes of this increase. Juglone is a plant-derived 1,4-naphthoquinone with confirmed antibacterial and antitumor activities. However, the specific mechanism underlying its antibacterial activity against Staphylococcus aureus remains unclear. To e...

The present study was carried out to investigate the yield, quality, and metabolomic responses of four different vegetable crops treatments with pure juglone standard walnut (Juglans regia L.) leaf extract at soil concentrations found in orchards. A total 60 phenolic compounds were identified quantified, some for first time these crop vegetables. Beta vulgaris L. Lactuca sativa less susceptible...

objective(s): juglone is isolated from many species of the juglandaceae family and used as an anti-viral, anti-bacterial, and anti-tumor therapeutic. here, we evaluated juglone-induced antitumor effect in ovarian cancer skov3 cells. materials and methods: mtt assay was performed to examine juglone anti-proliferative effect. cell cycle and apoptosis were studied using flow cytometry in juglone-tr...

Objective(s): Juglone is isolated from many species of the Juglandaceae family and used as an anti-viral, anti-bacterial, and anti-tumor therapeutic. Here, we evaluated juglone-induced antitumor effect in ovarian cancer SKOV3 cells. Materials and Methods: MTT assay was performed to examine juglone anti-proliferative effect. Cell cycle and apoptosis were studied using flow cytometry in juglone-t...

A method for determination of juglone in leaves and hulls of Pterocarya fraxinifolia was developed, based on RP-HPLC. This compound was extracted from leaves and hulls by chloroform refluxing about 2 hours. The chloroform was evaporated under low pressure at   50 ºC to produce a dry residue. The remained materials were dissolved in acetonitrile to be used for determination of this compound....

The present study aimed to investigate the antifibrotic effects of juglone on dimethylnitrosamine (DMN)‑induced fibrosis in rats. Juglone, which is a quinone, significantly decreased DMN‑induced rat hepatic fibrosis, which was associated with increased superoxide dismutase (SOD) activity, decreased oxidative stress and reduced levels of α‑smooth muscle actin (α‑SMA) and collagen (Col) III in th...

The aim of this study was to enhance the understanding of the antitumor mechanism of 1,4-naphthoquinones and ascorbate. Juglone, phenylaminonaphthoquinone-7, and 9 (Q7/Q9) were evaluated for effects on CT-DNA and DNA of cancer cells. Evaluations in MCF-7 cells are DNA damage, ROS levels, viability, and proliferation. Proteins from MCF-7 lysates were immunoblotted for verifying PARP integrity, γ...