Oxidized low density lipoprotein increases acetylcholinesterase activity correlating with reactive oxygen species production

Heavy metal(loid) effect on multi-biomarker responses in apex predator: Novel assays in the monitoring of white stork nestlings

The goal of the present study was to investigate differences in biomarker responses related to metal(loid)s in white stork (Ciconia ciconia) nestling's blood from continental Croatia. To achieve this, a battery of biomarkers that can be affected by environmental pollutants, including metal(loid)s, was assessed (esterase activity, fluorescence-based oxidative stress biomarkers, metallothionein levels, glutathione-dependent enzyme activity). The research was conducted during the white stork breeding season in diverse areas (a landfill, industrial and agricultural sites, and an unpolluted area). White storks' nestlings near the landfill exhibited reduced carboxylesterase (CES) activity, elevated glutathione (GSH) concentration, as well as high Pb content in the blood. Increased As and Hg concentrations in blood were attributable to environmental contamination in agricultural area and an assumed unpolluted area, respectively. Furthermore, agricultural practices appeared to affect CES activity, as well as elevate Se levels. In addition to the successful implementation of biomarkers, present research showed that agricultural areas and a landfill are areas with increased metal(loid) levels possibly causing adverse effects on the white storks. This first-time heavy metal and metalloid analyses in the white stork nestlings from Croatia point to the necessary monitoring and future assessments of pollution impact to prevent irreversible adverse effects.

Anti-hypercholesterolemic potential of diet supplemented with Anchomanes difformis and Pleurotus tuberregium tubers in high cholesterol fed rats

Background

One significant ethnomedicinal motivation behind Pleurotus tuberregium (PTT) and Anchomanes difformis (ADT) tubers is cardiovascular-related conditions treatment. This investigation is in this way planned for deciding the impact of PTT and ADT enhanced eating routine on key enzymes linked with hypercholesterolemia in elevated cholesterol fed rodents.

Methods

Rats were isolated into control group, hypercholesterolemic-prompted untreated group, hypercholesterolemic-treated groups with dietary routine containing PTT (5% and 10%), ADT (5% and 10%), 5% PTT and 5% ADT conbination and traditional medication, atorvastatin for 28 days. Ten rodents were utilized for every one of the groups.

Results

Feeding with PTT and ADT comprehensive eating regimen and their combination significantly (P < 0.05) diminished the AChE, HMG-CoA, ALT, AST, ALP, LDH and CK activities and levels of mevalonate, triglyceride (TG), total cholesterol (TC), low density lipoprotein (LDLch), atherogenic indices, MDA and ROS yet significantly increased the SOD, CAT, GPx activities, and level of HDL, GSH when contrasted with HC-initiated untreated rodents. Likewise, histopathological of liver and heart demonstrated no obsessive changes in all the treated groups when contrasted with healthy control group. HPLC fingerprinting of the PTT and ADT aqueous concentrates uncovered the nearness of ferulic acid, vanillic acid, catechin, quercetin, chlorogenic acid, ellagic acid and gallic acid. Notwithstanding, aqueous concentrate of ADT contained plentiful convergences of the polyphenolics when contrasted with PTT concentrate.

Conclusions

The tubers HMG-CoA reductase inhibitory activity could additionally support their antihypercholesterolemic use in folk medication. Accordingly, the tubers may in this way be valuable as restorative nourishment for helpful treatment of clinical conditions related hypercholesterolemia with the ADT diet holding more guarantee.

OxLDL plasma levels in patients with Alzheimer's disease

OBJECTIVE

The objective of this study was to characterize the conventional lipid profile, oxLDL levels and ApoE polymorphism in patients with Alzheimer's disease (AD) and in elderly individuals without cognitive impairment.

METHODS

Eighty elderly individuals were selected and the levels of oxLDL were determined using the ELISA kit, and ApoE gene polymorphism was investigated using polymerase chain reaction-restriction fragment length polymorphism.

RESULTS

Significantly reduced levels of oxLDL were observed in patients with AD compared to the control group. A higher frequency of the ApoE ε4 allele was observed in patients with AD compared to controls. No difference was observed for total cholesterol, HDL-C, and LDL-C levels between the two groups, while triglyceride levels were higher in controls compared with patients with AD.

CONCLUSION

The data analyzed together did not reveal significant differences in lipid profiles, including oxLDL levels. However, the importance of lipid changes in the genesis of the disease cannot be ruled out. Nevertheless, the ApoE ε4 allele was significantly more frequent in patients with Alzheimer's dementia in agreement with previous findings in the literature, but this genetic component did not change the levels of oxLDL.

Changes in Cholinesterase Activity in Blood of Adolescent with Metabolic Syndrome after Supplementation with Extract from Aronia melanocarpa

Obesity and metabolic syndrome (MetS) are growing problems among children and adolescents. There are no reports of changes in the activity of butyrylcholinesterase (BChE) in children and adolescents with metabolic syndrome especially after supplementation with extract from Aronia melanocarpa. Materials studied included plasma and erythrocytes isolated from peripheral blood of patients with MetS and healthy subjects. We have estimated the following parameters: acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) activity, lipid peroxidation and lipids levels in plasma, and erythrocytes membrane. In patients with MetS, a significant increase in AChE and BChE activity, higher LDL-cholesterol and triacylglycerol levels, and lower HDL-cholesterol level were observed. Supplementation with A. melanocarpa extract resulted in mild but statistically significant reduction of total cholesterol, LDL-cholesterol, and triacylglycerol levels and caused an increase in HDL-cholesterol level and a decrease in lipid peroxidation in plasma patients with MetS. Additionally, a decrease in lipid peroxidation and cholesterol level and a decrease in AChE activity in the erythrocyte membranes after supplementation with A. melanocarpa were noted. Summarizing, an increase in AChE and BChE activity and disruption of lipid metabolism in patients with MetS were observed. After supplementation of MetS patients with A. melanocarpa extract, a decrease in AChE activity and oxidative stress was noted.

Immunoaffinity Knockout of Saponin Glycosides from Asparagus racemosus to Assess Anti-lipid Peroxidation

INTRODUCTION

Asparagus racemosus Willd (Asparagaceae family), known as Shatavari, is important in Ayurveda and traditional Thai medicines. The saponin glycosides, shatavarin I and IV are major constituents in its roots and may be responsible for their actions including protection against lipid peroxidation and carcinogenesis.

OBJECTIVE

To develop an immunoaffinity column for isolating compounds with structures related to shatavarin IV from crude extracts of A. racemosus root.

METHODOLOGY

The monoclonal antibody recognising shatavarin IV (mAbShavIV) was coupled to an Affi-Gel Hz gel to isolate compounds with structures related to shatavarin IV from the other components of crude extracts of A. racemosus root. The saponin glycosides in each fraction were analysed by mAbShavIV ELISA and LC-MS/MS.

RESULTS

The pooled wash-through fractions contained 3% of loaded mAbShavIV reactive saponin glycosides, while eluted fractions released ~ 90% of shatavarin saponin glycosides in a single step. Using thiobarbiturate (TBARs) to measure lipid-peroxidation, the extract, and the pooled wash-through fractions showed moderate protection against Cu⁺ -induced oxidation of human low density lipoprotein (LDL) (IC₅₀ 11.3 ± 1.4 and 12.6 ± 0.9 μg/mL, respectively). In contrast, the saponin glycosides eluted from the mAbShavIV-column had weaker protectant (IC₅₀ 29.7 ± 1.8 μg/mL) suggesting that A. racemosus shatavarins do not inhibit carcinogenesis through preventing lipid peroxidation.

CONCLUSION

The strategy described here demonstrates its utility for isolating a group of related compounds from the rest of the extract with selectivity and recovery rate. Pharmacological efficacy and synergistic effects of the components obtained can be further investigated. Copyright © 2017 John Wiley & Sons, Ltd.

Effect of intensive lipid-lowering therapies on cholinesterase activity in patients with coronary artery disease

BACKGROUND

Many disease entities, including coronary artery disease (CAD), demonstrate abnormalities in the activity of cholinesterases. As CAD is characterized by an increase in cholesterol level, patients with this disease are treated with lipid-lowering drugs. The present study attempts to determine how statin or combined statin and ezetimibe therapy influences cholinesterase activity.

METHODS

Plasma and erythrocytes were isolated from the peripheral blood of CAD patients (n=61) and healthy subjects (n=63). The patients were randomized into three groups: 20mg/day rosuvastatin, 40mg/day atorvastatin, and combined 10mg/day atorvastatin with 10mg/day ezetimibe. The following parameters were studied: activity of acetylcholinesterase (AChE) and butyrylcholinoesterase (BChE) and lipid levels.

RESULTS

Patients with CAD demonstrated significant increase in AChE and BChE activity. We observed increase in the level of low-density lipoprotein cholesterol (LDL) and triglycerides (TG) level, and decrease in high density lipoprotein cholesterol (HDL) level. After atorvastatin monotherapy, the following decrease in activity were observed: 17% LDL, 43% total cholesterol (TC) level, 33% AChE and 17% BChE. The following decrease in activity were observed following rosuvastatin monotherapy: 26% LDL level, 26% AChE and 18% BChE. After combined atorvastatin+ezetimibe therapy, the following decrease in activity occurred: 27% of LDL level, 15% TC, 33% of AChE and 20% BChE.

CONCLUSIONS

Our results suggest that intensive lipid-lowering therapy has a beneficial effect on AChE and BChE activity and lipid levels. Combination atorvastatin+ezetimibe therapy was found to have similar effects on the tested parameters as statin monotherapy.

Hypercholesterolemia-induced ocular disorder: Ameliorating role of phytotherapy

The ocular region is a complex structure that allows conscious light perception and vision. It is of ecto-mesodermal origin. Cholesterol and polyunsaturated fatty acids are involved in retinal cell function; however, hypercholesterolemia and diabetes impair its function. Retinal damage, neovascularization, and cataracts are the main complications of cholesterol overload. Dietary supplementation of selected plant products can lead to the scavenging of free reactive oxygen species, thereby protecting the ocular regions from the damage of hypercholesterolemia. This review illustrates the dramatic effects of increased cholesterol levels on the ocular regions. The effect of phytotherapy is discussed in relation to the different regions of the eye, including the retina, cornea, and lens.