Abstract:
:Hormesis can be considered as a parameter which has a non-monotonic relationship with some endpoint. Since caloric intake is such a parameter, and the impact of this parameter on risk assessment has been fairly well characterized, it can provide clues as to how to integrate the information from a hormetic parameter into risk assessments for toxicants. Based on the work with caloric intake, one could: (a) define a biomarker for hormetic effect; (b) integrate specific information on when in the animals lifespan the parameter is active to influence parameters such as survival; (c) evaluate component effects of the overall hormetic response; and (d) address the consequences of a non-monotonic relationship between the hormetic parameter and endpoints critical for risk assessment. These impacts on risk assessments have been characterized for chronic tests, but are also true for short-term tests. A priority is the characterization of the dose-response curves for hormetic parameters. This quantification will be critical in utilizing them in risk assessment. With this information, one could better quantitatively address the changes one expects to result from the hormetic parameter, and limit the uncertainty and variability which occurs in toxicity testing.
journal_name
Hum Exp Toxicoljournal_title
Human & experimental toxicologyauthors
Turturro A,Hass B,Hart RWdoi
10.1177/096032719801700810subject
Has Abstractpub_date
1998-08-01 00:00:00pages
454-9issue
8eissn
0960-3271issn
1477-0903journal_volume
17pub_type
杂志文章abstract::Results obtained in long-term carcinogenicity studies with animals should be evaluated, first and foremost, by statistical comparisons of the data obtained from the treated group with that from the concurrent control group. Often the results are compared with data from so-called historical control groups in order to t...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
doi:10.1191/0960327103ht394oa
更新日期:2003-10-01 00:00:00
abstract::Gamma-hydroxybutyrate (GHB) is a compound used in the treatment of alcohol withdrawal, narcolepsy, and for induction of anaesthesia. It is also contained in many products illegally marketed as "dietary supplements" and is increasingly being recognised as a potential drug of abuse. We report the case of a 44-year-old m...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032701666142043
更新日期:2001-01-01 00:00:00
abstract::A retrospective review of medical records was carried out to determine the pattern of drug and chemical poisoning cases admitted to a teaching hospital in Malaysia. Medical records of patients admitted during the period January 1987 to December 1995 were reviewed. They accounted for 0.2% of total admissions during the...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327102ht260oa
更新日期:2002-07-01 00:00:00
abstract::In our study, rats were exposed to sarin vapors for 240 min at four different concentrations (0.30, 0.43, 0.58 and 0.82 microg/L) in a whole-body inhalation chamber. The acetylcholinesterase activity (AChE, EC 3.1.1.7) was measured in the whole blood, frontal cortex (FC), pontomedullar area (PM) and basal ganglia (BG)...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327105ht539oa
更新日期:2005-07-01 00:00:00
abstract::This study was designed to evaluate the hepato and neuroprotective activity of Daflon and low-dose γ radiation on thioacetamide (TAA)-induced liver damage and hepatic encephalopathy (HE) in rats. Effect of daily Daflon treatment (100 mg/kg body weight, Per OS (p.o.) for consecutive 3 days) and/or fractionated low-dose...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327116637657
更新日期:2017-01-01 00:00:00
abstract::The purpose of the present study is to establish a new animal model of azithromycin (AZ)-induced liver injury and study the molecular pathological change during the process. First, mice were respectively injected intraperitoneally with AZ of different high doses. Our results showed that 800 mg/kg AZ injection signific...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115595684
更新日期:2016-05-01 00:00:00
abstract::A retrospective study was conducted on 269 patients with anticholinesterase poisoning who had been admitted to the Internal Medicine and Pediatric Clinics over the past 10 years. Their ages ranged from 17 d to 62 years. In adults, suicide was the most common means of intoxication. Miosis was the most frequent symptom ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719000900503
更新日期:1990-09-01 00:00:00
abstract::1. Six healthy male volunteers received intravenous injections of 26Al as citrate. Accelerator mass spectrometry and gamma-ray spectrometry were used to determine levels of the tracer in blood and excreta at times up to 5-6 d. 2. There was a rapid clearance from blood (mean 2% of injection remaining after 1 d) and maj...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501400707
更新日期:1995-07-01 00:00:00
abstract::Sulphur is an essential micronutrient required by the body in low concentrations, but its high intake can lead to a serious health hazard. Sulphur compounds are reported to induce several toxic responses in animals, but so far no reports are available on the toxic effects of elemental sulphur, following dietary supple...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327104ht435oa
更新日期:2004-05-01 00:00:00
abstract:INTRODUCTION:Anthrax is a bacterial disease caused by the aerobic sporeforming bacterium Bacillus anthracis. It has been suggested that oxidative stress plays an important role in the pathogenesis of B. anthracis. The aim of this study was to investigate serum paraoxonase 1 (PON1) activity, catalase activity, malondial...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327116661020
更新日期:2017-07-01 00:00:00
abstract::Sepsis, often initiated by an infection, is a state of disrupted inflammatory homeostasis. There is increasing evidence that oxidative stress has an important role in the development of sepsis-induced multiorgan failure. Resveratrol (RV) is a polyphenolic compound found in the skin of red fruits, such as mulberries an...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327112467047
更新日期:2013-10-01 00:00:00
abstract::Pharmacological potential of curcumin was assessed in PC12 cells against hydrogen peroxide (H(2) O(2)) exposure. In MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide] and lactate dehydrogenase (LDH) assays, 24-hour exposure of H(2)O(2) (0.5 mM and above) was found to be cytotoxic. A significant (p < 0...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327110371696
更新日期:2011-03-01 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::Progressive renal dysfunction in 5/6 nephrectomized (NX) rats can be physiologically divided into three stages, coinciding with morphological stages, after definition of physiological parameters for identification of stage. Now, for the establishment of a toxicity screening approach using 5/6 NX rats, our concept, "Di...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032701666840048
更新日期:2001-02-01 00:00:00
abstract:BACKGROUND:Diphenhydramine (DPHM) overdose is a frequent cause of acute poisoning. Although its clinical features are well known, information about the dose-dependent toxicity of DPHM is still scarce. The objective of this study was to investigate the dose-dependent toxicity of DPHM in patients with acute DPHM poisonin...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032700671040438
更新日期:2000-09-01 00:00:00
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::1. In humans CaNa2EDTA increases urinary excretion of lead as well as that of essential metals such as zinc, ferrum and manganese but not that of copper. 2. We studied the effect of CaNa2EDTA injection on serum dopamine-beta-hydroxylase, a copper-dependent enzyme, in three male lead welders hospitalized for suspected ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719401300405
更新日期:1994-04-01 00:00:00
abstract::To clarify the reproductive toxicity of polychlorinated biphenyl compounds through determination of testicular lipid peroxidation, reactive oxygen species and enzymatic and non-enzymatic antioxidants in rats exposed to Aroclor 1254. Adult male rats were administered Aroclor 1254 at a dose of 2 mg/kg per day ip for 30 ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327105ht500oa
更新日期:2005-02-01 00:00:00
abstract::Evidence-based guidelines do not exist for the treatment of patients with chronic mild-moderate digoxin toxicity. We sought to evaluate differences among specialists in the use of digoxin-specific antibody fragments and the decision to admit these patients. A sample of cardiologists, emergency physicians, and medical ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327109105405
更新日期:2009-05-01 00:00:00
abstract::A 20-year-old male who attempted suicide by injecting subcutaneously 10 ml of Sistemin 40 (40% dimethoate) was admitted 16 h later. General weakness, muscular fibrillations and a marked inhibition of red blood cell and serum cholinesterases were the prominent signs of intoxication. The antidotal treatment of intermitt...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719000900111
更新日期:1990-01-01 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::Iodine-125 HIPDM was evaluated as a screening agent for studying multiorgan toxicity due to Cyclosporine-A (CsA) and the results were compared to histopathological findings of the tissues. The rats were injected subcutaneously with 50 mg/kg (body weight) of CsA or with equal volume of the vehicle, Cremophor-EL, for 7 ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719601501101
更新日期:1996-11-01 00:00:00
abstract::The principal impediment to gene therapy is the development of efficient, nontoxic gene carriers that can handle and deliver foreign genetic materials into various cell types, including healthy and cancerous cells. Poly-l-lysine (PLL) polymers are one of the most favorable gene carriers among nonviral vectors, and PLL...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327119846924
更新日期:2019-08-01 00:00:00
abstract::Food-borne botulism is a rare disease that results from ingestion of the toxins produced by Clostridium botulinum. The most common cause of the disease is the consumption of home-canned foods prepared under inappropriate conditions, especially in rural environments. In this report, a food-borne botulism outbreak poten...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327106ht614oa
更新日期:2006-05-01 00:00:00
abstract::Recent years have seen substantial shifts in cultural attitudes towards cannabis for medical and recreational use. However, legalizing recreational marijuana may have adverse effects on individual and public health. As the most widely used illicit agent, cannabis is commonly reported to disrupt learning and memory. Un...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327119886037
更新日期:2020-03-01 00:00:00
abstract::Brain tumors are often incurable despite current aggressive treatment modalities. Regional intracerebral administration of labeled monoclonal antibodies (Mabs) can maximize the radioisotope and Mab concentration to tumor sites while reducing systemic toxicity. h-R3 is a humanized antiepidermal growth factor receptor M...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032700675323269
更新日期:2000-12-01 00:00:00
abstract::Recent studies have proposed the use of low concentrations of phytochemicals and combinations of phytochemicals in chemoprevention to reduce cytotoxicity and simulate normal ingestion through diet. The purpose of the present study was to evaluate whether the DNA damage, chromosome instability, and oxidative stress ind...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327112468911
更新日期:2013-08-01 00:00:00
abstract::Trichloroethylene (TCE) was exposed in the presence of the spin trap N-tert-butyl-alpha-phenyl nitrone (PBN, 0.1 M) to ionizing radiation from two different sources in an attempt to determine the origin of the spin-trapped radicals generating the EPR spectra in precision cut liver slices. TCE samples were irradiated w...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719701600607
更新日期:1997-06-01 00:00:00
abstract::There is compelling evidence in support of positive associations between zinc (Zn) deficiency and high accumulation of cadmium (Cd) in biological samples of different cancerous patients. The incidence of mouth cancer has been increased among people who possess habit of drinking alcohol, tobacco smoking and chewing wit...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327109360045
更新日期:2010-03-01 00:00:00
abstract::Formaldehyde is a physiological intermediary metabolite taking part in many biological process in the body. It is a constituent of many items of daily use, including foods. It is also used in medicine for treatment of some conditions. A 40% solution of formaldehyde in water is known as formalin. Formalin is irritating...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
doi:10.1191/096032700678815954
更新日期:2000-06-01 00:00:00