Abstract:
:The number of definite and probable human chemical carcinogens identified by IARC approaches between 1987 and June 2004 is reported to be 50 agents. However, overall, given the rapid expansion in the number of chemicals in use, the throughput of the current approach to identifying potential environmental carcinogens is low. The long-term rodent bioassay, a key part of the current approach, identifies many chemicals which eventually turn out to be irrelevant for human health with regard to cancer. A new approach is suggested which focuses on identifying the potency of environmental mixtures for induction of toxicological changes relevant to carcinogenesis (e.g., cell proliferation, chronic inflammation, inhibition of apoptosis, mutagenicity). Details regarding a suggested strategy for prioritization of mixtures are provided with more detailed information regarding mutagenicity as an end point. The long-term rodent bioassay is not included in the proposal (although it is acknowledged that it will continue to be important in premarketing regulatory schemes) for hazard identification. The Multiple Chemicals and Actions Model (MCAM) is developed. In this model the chemical mixtures in the environment act via a number of mechanisms as 'effectors' or 'inhibitors' of a multistage carcinogenic process. Identifying effectors and inhibitors of the rate-limiting step would be important for preventive strategies. Genetic polymorphisms act as modulators of effector and inhibitor mixtures. It is suggested that the MCAM model could be used in public education programmes to help inform on public health issues regarding cancer and to help avoid future scares which tend to focus on single chemicals. It is acknowledged that there would need to be basic research undertaken to generate appropriate data to support the application of the proposal before it could be used in cancer prevention strategies.
journal_name
Hum Exp Toxicoljournal_title
Human & experimental toxicologyauthors
Battershill JMdoi
10.1191/0960327105ht559oasubject
Has Abstractpub_date
2005-11-01 00:00:00pages
547-58issue
11eissn
0960-3271issn
1477-0903journal_volume
24pub_type
杂志文章abstract::Although ingestion of methyl ethyl ketone peroxide (MEKP) is rare, it carries a high risk of morbidity and mortality. This paper reports the first such case from Turkey in which a 70-year-old man unintentionally ingested MEKP in his kitchen. The patient was brought into the emergency department (ED) within 1 hour of i...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327111407230
更新日期:2011-12-01 00:00:00
abstract::In this study we examined the effect of the aqueous extract of Thonningia sanguinea (T.S.) on 7-ethoxyresorufin O-deethylase (EROD, CYP1A1), 7-pentoxyresorufin O-dealkylase (PROD, CYP2B1/2), 7-methoxyresorufin O-demethylase (MROD, CYP1A2), aniline hydroxylase (aniline, CYP2E1), p-nitrophenol hydroxylase (PNPH, CYP2E1)...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032700667732543
更新日期:2000-11-01 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::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
abstract::The effect of sympathomimetic intervention with dopamine or dobutamine on the myocardial uptake of d-propoxyphene was investigated experimentally in rats. The d-propoxyphene (19 mg kg-1 h-1) was continuously infused, intravenously, over 45 min. After 20 min of infusion the rats were given either dopamine (12.5 microgr...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719101000203
更新日期:1991-03-01 00:00:00
abstract::1. This study investigated whether the reactive organohalogen gases perfluoroisobutene (PFIB) and phosgene, which cause death by overwhelming pulmonary oedema, affect the surfactant system or type II pneumocytes of rat lung. 2. The progression and type of pulmonary injury in Porton Wistar-derived rats was monitored ov...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032799678839554
更新日期:1999-11-01 00:00:00
abstract::Clinical and experimental studies have shown the adverse effects of excess glucocorticoid on testicular testosterone production. The NADPH co-enzyme has been recognized as an important factor that regulates several steps in steroidogenesis, while glucose oxidation acts as a limiting factor on testicular testosterone p...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327106ht591oa
更新日期:2006-03-01 00:00:00
abstract::Arsenic trioxide (As2O3) is utilized for treating patients suffering from hematological malignancies particularly acute promyelocytic leukemia. Unfortunately, the extensive application of this chemotherapeutic agent has been limited due to its adverse effects such as cardiotoxicity. Ellagic acid, as a phenolic compoun...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327117701986
更新日期:2018-04-01 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::Generation of reactive oxygen species (ROS) leads to serious tissue injuries. The effect of cyclopiazonic acid (CPA) on oxidative stress markers in the liver and kidneys of broiler chicks was studied. Ten-day-old male broiler chicks (Ross 308) were assigned into the control and test groups, which received normal salin...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327110384285
更新日期:2011-08-01 00:00:00
abstract::Cyanate and its active form isocyanate are formed mainly in the process of nonenzymatic urea biodegradation. Cyanate is capable of protein S- and N-carbamoylation, which can affect their activity. The present studies aimed to demonstrate the effect of cyanate on activity of the enzymes implicated in anaerobic cysteine...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327110394225
更新日期:2011-10-01 00:00:00
abstract::Progesterone (a neurosteroid) is an important modulator of the nervous system functioning. Organophosphorus pesticides like phosphamidon have been shown to adversely affect memory and induce oxidative stress on both acute and chronic exposure. The present study was therefore designed to investigate the effects of prog...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327110396522
更新日期:2011-10-01 00:00:00
abstract::The renin-angiotensin system (RAS) subserves vital physiological functions and also implicated in certain pathological states. Modulation of this system has been proposed in recent studies to be a promising strategy in treating liver fibrosis. We investigated the effect of the pharmacologic inhibition of RAS with angi...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327111401051
更新日期:2011-11-01 00:00:00
abstract::1. With DTPA as a comparison, the siderophore analogue 3,4,3-LIHOPO has been examined for its ability to remove 228Th nitrate from the rat after subcutaneous (sc) and intramuscular (im) injection to simulate wound contamination. The commencement of treatment was delayed 30 min, 6 h or 1 d and the animals killed at 7 d...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501400202
更新日期:1995-02-01 00:00:00
abstract::1. This study examines the effect of treating rats with gentamicin (80 mg kg-1 day-1 intramuscularly (i.m.), for 6 days) alone or with either L-thyroxine or the anti-thyroid drug carbimazole. 2. Gentamicin produced significant increases in serum creatinine and urea concentrations, and significantly reduced the activit...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501400103
更新日期:1995-01-01 00:00:00
abstract::The effects of moderate lead exposure on testicular endocrine function were evaluated in a group of 90 males who were occupationally exposed to inorganic lead. Lead concentrations in blood and bone were measured as indices of short-term and long-term, cumulative exposure, respectively. The results of this study show t...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719000900602
更新日期:1990-11-01 00:00:00
abstract::Two studies were performed in order to evaluate cytochrome P450 1A2 mediated caffeine metabolism during different nutritional conditions. 1. In the first study, 23 healthy male non-smokers, mean age 25, changed from a customary mixed diet to a standard diet in 6 days. The 6 day's standard diet was based on bread, pota...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501401004
更新日期:1995-10-01 00:00:00
abstract::Stem cell transplantation has indicated great promise for cell therapy in a wide range of diseases, but poor and insufficient viability of cells within damaged tissues has limited its potential therapeutic effects. 17 β-Estradiol (E2) is a steroid hormone that plays an important role in expression of many genes and re...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115586208
更新日期:2016-03-01 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::In acute respiratory distress syndrome (ARDS), there is extensive overproduction of free radicals to the extent that endogenous anti-oxidants are overwhelmed, permitting oxidative cell damage. The present study examined the benefit of the anti-oxidant compound N-acetylcysteine (NAC) in the management of ARDS by measur...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,随机对照试验
doi:10.1177/0960327107083452
更新日期:2007-09-01 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::Organic solvents can cause hearing loss themselves or promote noise-induced hearing loss. The objective of this study was to review the literature on the effects of low-level exposure to trichloroethylene on the auditory system and consider its relevance for the occupational settings. Both human and animal investigati...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327108090267
更新日期:2008-03-01 00:00:00
abstract::1. Blood lead levels were examined in 127 housepainters in North Carolina between April and September, 1993. Each participant filled out a questionnaire and gave a blood sample. The questionnaire covered the individual's work history, concentrating on paint-removal activities and personal protection, and also covered ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501400512
更新日期:1995-05-01 00:00:00
abstract:BACKGROUND:Deliberate self-poisoning (DSP) is a major health problem with increasing incidence mainly among young people. OBJECTIVE:To examine the clinical and toxicological characteristics of DSP, it is compared to unintentional (non-DSP) exposures and those characteristics which might be associated with increased to...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327104ht454oa
更新日期:2004-07-01 00:00:00
abstract::A liquid alcoholic extract of Papaver somniferum named Elixir Paregorico is extensively used for diarrheal diseases in Brazil. Its increased popularity has brought concerns and fears over the safety of this herbal product. Given the lack of investigative clinical studies, in this regard, this study investigated whethe...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327108090274
更新日期:2008-10-01 00:00:00
abstract::The aim of the present study was to investigate whether cognitive behavioral impairment, induced by nicotine in offspring rats, was associated with the alteration of hippocampal short-term potentiation (STP) and long-term potentiation (LTP) and to discuss the potential underlying mechanism. Young adult offspring rats ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113494902
更新日期:2014-02-01 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:AIM:Diazinon (DZN) is one of the most important organophosphorus compounds used to control pests in agriculture in many countries. Several studies have shown that exposure to DZN may alter protein expression in the liver. In order to further investigate the mechanism of DZN toxicity, differentially expressed ATP-intera...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115619771
更新日期:2016-10-01 00:00:00
abstract:AIM:To assess the systemic inflammatory response (SIR) and the multi-organ damage after large-volume liver radiofrequency ablation (RFA) with or without concurrent Pringle maneuver. METHODS:Wistar rats were subjected to 30% liver RFA (group RFA), liver RFA under 30-min Pringle maneuver (group RFA + P), Pringle only (g...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327111401438
更新日期:2011-11-01 00:00:00
abstract:INTRODUCTION:Chronic obstructive pulmonary disease (COPD) due to sulfur mustard (SM), known as mustard lung, is an important late pulmonary complication of SM poisoning. Due to the possible role of systemic inflammation in mustard lung, we evaluated the serum levels of adiponectin and leptin in these patients. MATERIA...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113504973
更新日期:2014-06-01 00:00:00