Abstract:
:Serrapeptase (SP) and nattokinase (NK) are proteolytic enzymes belonging to serine proteases. In this study, we hypothesized that SP and NK could modulate certain factors that are associated with Alzheimer's disease (AD) pathophysiology in the experimental model. Oral administration of aluminium chloride (AlCl3) in a dose of 17 mg/kg body weight (bw) daily for 45 days induced AD-like pathology in male rats with a significant increase in brain acetylcholinesterase (AchE) activity, transforming growth factor β (TGF-β), Fas and interleukin-6 (IL-6) levels. Meanwhile, AlCl3 supplementation produced significant decrease in brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1 (IGF-1) when compared with control values. Also, AlCl3 administration caused significant decline in the expression levels of disintegrin and metalloproteinase domain 9 (ADAM9) and a disintegrin and metalloproteinase domain 10 (ADAM10) genes in the brain. Histological investigation of brain tissue of rat model of AD showed neuronal degeneration in the hippocampus and focal hyalinosis with cellular as well as a cellular amyloid plaques formation. Oral administration of SP or NK in a rat model of AD daily for 45 days resulted in a significant decrease in brain AchE activity, TGF-β, Fas and IL-6 levels. Also, the treatment with these enzymes produced significant increase in BDNF and IGF-1 levels when compared with the untreated AD-induced rats. Moreover, both SP and NK could markedly increase the expression levels of ADAM9 and ADAM10 genes in the brain tissue of the treated rats. These findings were well confirmed by the histological examination of the brain tissue of the treated rats. The present results support our hypothesis that the oral administration of proteolytitc enzymes, SP and/or NK, would have an effective role in modulating certain factors characterizing AD. Thus, these enzymes may have a therapeutic application in the treatment of AD.
journal_name
Hum Exp Toxicoljournal_title
Human & experimental toxicologyauthors
Fadl NN,Ahmed HH,Booles HF,Sayed AHdoi
10.1177/0960327112467040subject
Has Abstractpub_date
2013-07-01 00:00:00pages
721-35issue
7eissn
0960-3271issn
1477-0903pii
32/7/721journal_volume
32pub_type
杂志文章abstract:OBJECTIVE:Mushroom poisoning is still a significant health-care problem, with the potential to affect blood parameters. The present study analyses the effect of mushroom poisoning on complete blood cell parameters, cell ratios, and cell volume indices and the effect of the mentioned parameters on prognosis/hospital len...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327119855131
更新日期:2019-10-01 00:00:00
abstract::Information on the acute effects associated with the handling of 1,4-dioxane is sparse. Our aim was to evaluate the acute effects of 1,4-dioxane vapours. In a screening study, six healthy volunteers rated symptoms on a visual analogue scale (VAS), while exposed to stepwise increasing levels of 1,4-dioxane, from 1 to 2...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327106073805
更新日期:2006-12-01 00:00:00
abstract::The effects of low lead exposure were investigated in 96 children (7-12 years old) living and studying within a 1 km radius of a lead smelter (exposed population) located in Torreón, Coahuila, México, and compared with 30 children living and studying 4.5 km from the same smelter (control population). Both populations ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719601500406
更新日期:1996-04-01 00:00:00
abstract::The purpose of this study was to characterize the zinc oxide nanoparticles (ZnO-NPs) and their bulk counterpart in suspensions and to access the impact of their acute oral toxicity at doses of 300 and 2000 mg/kg in healthy female Wistar rats. The hematological, biochemical, and urine parameters were accessed at 24 and...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327116629530
更新日期:2016-12-01 00:00:00
abstract::There are many discrepancies among the results of studies on the genotoxicity of lead. The aim of the study was to explore lead-induced DNA damage, including oxidative damage, in relation to oxidative stress intensity parameters and the antioxidant defense system in human leukocytes. The study population consisted of ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327116665674
更新日期:2017-07-01 00:00:00
abstract::1. Three indexes for evaluating the severity of paraquat poisoning based on plasma-paraquat concentration are presently in use; the curves of Proudfood et al. and Scherrmann et al. and the SIPP. Their effectiveness in determining the prognosis of patients with paraquat poisoning was evaluated. 2. To determine which in...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719101000104
更新日期:1991-01-01 00:00:00
abstract::Sodium hypochlorite (NaClO) is used extensively as a disinfectant or bleaching agent. Most studies describe ingestion or inhalation route of this product with rare complication and fatalities. Despite global daily exposures, data about bleach injection is limited. Here we report intentional infusion of 20 mL, sodium h...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327111432506
更新日期:2012-06-01 00:00:00
abstract::The effects of the environmental toxicant, triethyltin, on Ca2+ mobilization in Madin-Darby canine kidney (MDCK) cells have been examined. Triethyltin induced an increase in cytosolic free Ca2+ levels ([Ca2+]i) at concentrations larger than 2 microM in a concentration-dependent manner. Within 5 min, the [Ca2+]i signal...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327102ht276oa
更新日期:2002-08-01 00:00:00
abstract::Previous studies have shown that environmental exposure to heavy metals has been related to epigenetic changes, such as DNA methylation in receptors involved in pathogenesis of asthma. One of these receptors is beta-2 adrenergic receptor (ADRB2). We conducted this study to examine the association between blood aluminu...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327120921436
更新日期:2020-10-01 00:00:00
abstract::Occupational chronic solvent encephalopathy (CSE) is associated with a number of neurobehavioural disorders including defects of visual perception. The purpose of this study was to characterize colour vision defects in CSE patients. Colour vision was tested in bright illumination with the Farnsworth-Munsell 100-hue te...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327107076820
更新日期:2007-04-01 00:00:00
abstract::1. 26Al and 67Ga were given as citrates to a healthy male volunteer by intravenous injection. The retention of both tracers was studied by body radioactivity measurement. Levels in blood and excreta were determined by gamma-ray spectrometry and/or accelerator mass spectrometry. 2. More than half of the 26Al had left t...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501400309
更新日期:1995-03-01 00:00:00
abstract::Oxidative stress has an important role in the pathophysiology of many occupational diseases. In this controlled exposure study, the intensity of oxidative stress biomarkers was assessed in the workers of natural sweet and sour gas refineries (SwGR and SoGR, respectively) and compared with controls. In addition, the ro...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327112450898
更新日期:2012-12-01 00:00:00
abstract::This study was designed to investigate the effect of agmatine sulfate (AG, CAS2482-00-0) in nicotine (NIC)-induced vascular endothelial dysfunction (VED) in rabbits. NIC was administered to produce VED in rabbits with or without AG for 6 weeks. Serum lipid profile, serum thiobarbituric acid reactive substances, reduce...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115597311
更新日期:2016-05-01 00:00:00
abstract::In Southern Africa, the medicinal plant Warburgia salutaris is commonly used for the treatment of inflammatory and other diseases. The methanol extracts of W. salutaris were investigated with regard to a) production of proinflammatory cytokines tumor necrosis factor-alpha, interleukin-1beta, and interferon-gamma; b) a...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327108099536
更新日期:2008-11-01 00:00:00
abstract::The majority of households in rural India still rely on unprocessed solid biomass for domestic energy. The aim of this study was to investigate whether chronic exposure to biomass smoke causes activation of leukocytes and the formation of leukocyte-platelet aggregates. We conducted flow cytometric analysis of beta2 Ma...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327106074603
更新日期:2006-11-01 00:00:00
abstract::From 1988 to 1991, 732 patients (91.1% Chinese) were admitted to four general medical wards at the Prince of Wales Hospital in Hong Kong with acute poisoning. The patients were predominantly female (68.9%) and relatively young (86.3% below the age of 40). Further analysis of 655 patients indicates that the vast majori...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719401300711
更新日期:1994-07-01 00:00:00
abstract::Accumulating evidence has shown that ethanol-induced iron overload plays a crucial role in the development and progression of alcoholic liver disease. We designed the present study to investigate the potential protective effect of quercetin, a naturally occurring iron-chelating antioxidant on alcoholic iron overload a...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113499168
更新日期:2014-05-01 00:00:00
abstract::Apoptosis induction in cancer cells is one of the most efficient ways to treat cancer and find anticancer compounds. The aim of this study was to evaluate the cytotoxic effects of heat-killed indigenous probiotic bacteria and apoptosis induction in the HT-29 human colon adenocarcinoma cell line. The growth-inhibitory ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327119851255
更新日期:2019-09-01 00:00:00
abstract::Kampo (Japanese traditional herbal) medicines have been produced by combining multiple crude drugs, almost all of plant origin but with some of animal or mineral origin, and contain a great many substances. Their effect is a combination of the various interactions of the constituent substances, whether they are enhanc...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
doi:10.1191/0960327106het654oa
更新日期:2006-08-01 00:00:00
abstract::Methanol, a potent toxicant in humans, occurs naturally at a low level in most alcoholic beverages without causing harm. However, illicit drinks made from "industrial methylated spirits" [5% (v/v) methanol:95% (v/v) ethanol] can cause severe and even fatal illness. Since documentation of a no-adverse-effect level for ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032701718620864
更新日期:2001-11-01 00:00:00
abstract::The modulating effect of peroxisome proliferator-activated receptor α ligand on haemodynamic effects of phenylepherine (PE), angiotensin II (AII), endothelin 1 (ET1), acetylcholine (Ach), sodium nitroprusside (SNP) and isoproterenol (ISO) were evaluated in glycerol-induced acute kidney injury in rats. The effect of PE...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327112454891
更新日期:2013-03-01 00:00:00
abstract::The majority of breast cancer patients are resistant to chemotherapy or radiotherapy due to the down-regulation or lack of caspase-3 expression. Capsaicin was found to inhibit cancer cell growth in caspase-3-deficient human breast cancer cells. This study aimed to investigate the growth-inhibitive effect of capsaicin ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327110396530
更新日期:2011-10-01 00:00:00
abstract::The serial cognitive assessment of ten individuals made between 8 and 26 months after the water at Camelford in Cornwall was accidentally contaminated with aluminium sulphate, showed consistent evidence of impairment of information processing and memory. There was no obvious relationship between these impairments and ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719301200108
更新日期:1993-01-01 00:00:00
abstract::Mercury, a heavy metal, is widespread and persistent in the environment and has been elucidated as a possible risk factor in cardiovascular diseases. Mercury has been reported to selectively impair the nitric oxide (NO) pathway in the vascular endothelium as a consequence of oxidative stress. Conversely, mercury per s...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113512341
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:Chlorobenzylidene malononitrile (CS) is the tear gas used by the police. The aim was to evaluate an amphoteric, hypertonic, and chelating rinsing solution in CS exposure. METHODS:The first (CS) group of six police officers was exposed to CS only. The second (preexposure) group of eight sprayed their faces wi...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115578866
更新日期:2016-02-01 00:00:00
abstract::Postoperative cognitive dysfunction, which is associated with a wide range of cognitive functions including working memory, long-term memory, information processing, attention, and cognitive flexibility, is a major clinical issue in geriatric surgical patients. The aim of the current study was to determine the protect...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327116688068
更新日期:2017-12-01 00:00:00
abstract::Amyloid beta (Aβ) peptide aggregation and cholinergic neurodegeneration are involved in the development of cognitive impairment. Therefore, in this article, we examined rosuvastatin (RSV), an oral hypolipidemic drug, to determine its potential as a dual inhibitor of acetylcholinesterase (AChE) and Aβ peptide aggregati...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327117705431
更新日期:2018-04-01 00:00:00
abstract::Dimerized translationally controlled tumor protein (dTCTP) plays a role in allergic diseases. A 7-mer peptide, dimerized translationally binding protein 2 (dTBP2), binds to dTCTP and inhibits dTCTP, suggesting that the 7-mer peptide may have therapeutic potential. We assessed the safety of dTBP2 by examining its cytot...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113477873
更新日期:2013-11-01 00:00:00
abstract::The isolated and identified triterpenoid, 1-hydroxytetratriacontane-4-one (C34H68O2), obtained from the methanolic leaf extract of Leucas aspera Linn. was explored for the first time for antisnake venom activity. The plant (L. aspera Linn.) extract significantly antagonized the spectacled cobra (Naja naja naja) venom ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113494901
更新日期:2014-04-01 00:00:00
abstract::Public health issues have been raised regarding fructose toxicity and its serious metabolic disorders. Deleterious effects of high fructose intake on insulin sensitivity, body weight, lipid homeostasis have been identified. The new millennium has witnessed the emergence of a modern epidemic, the metabolic syndrome (MS...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327120969960
更新日期:2020-10-29 00:00:00