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Toxicology and Industrial Health

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https://www.readbyqxmd.com/read/29702030/effects-of-co-exposure-to-lead-and-zinc-on-redox-status-kidney-variables-and-histopathology-in-adult-albino-rats
#1
Ahlem Soussi, Manel Gargouri, Abdelfattah El Feki
Lead (Pb) is a toxic metal that induces a wide range of biochemical and physiological effects in humans. Oxidative damage has been proposed as a possible mechanism involved in Pb toxicity. The current study was carried out to evaluate the antioxidant activities of zinc (Zn) supplement against lead acetate-induced kidney injury in rats. In this study, adults male rats were treated for 15 days with Pb (0.344 g/kg body weight (bw)) associated or not with Zn (10 mg/kg bw). Our study showed that supplementation with Zn prevented renal dysfunction as indicated by plasma biomarkers (urea, uric acid, creatinine, lactate dehydrogenase, and alkaline phosphatase levels) and oxidative stress-related parameters (thiobarbituric acid reactive substances, protein carbonyl, advanced oxidation protein product, superoxide dismutase, catalase, glutathione peroxidase, and vitamins (A, E)) in kidney tissue...
July 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29669483/study-of-lung-toxicity-in-rats-exposed-to-silica-powder-with-different-hard-metal-constituents
#2
Zhansai Zhang, Yanfang Zhao, Gang Chen, Ruoming Li, Jun Yang, Daoyuan Sun
The objective of this study was to assess the lung toxicity induced by the inhalation of different hard metal constituents and silica powder and screen for potential toxicity biomarkers. Rats were randomly divided into saline, cobalt, tungsten carbide, silica, and hard metal (HM) groups and were administered a single 10-mg dose of the respective treatments. After 8 weeks, the lung tissue structure in the HM group was deformed, numerous nucleated giant and epithelial-like cells appeared in the stroma, and the computed tomography scanning images appeared abnormal...
July 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29669482/the-biochemical-effects-of-occupational-exposure-to-lead-and-cadmium-on-markers-of-oxidative-stress-and-antioxidant-enzymes-activity-in-the-blood-of-glazers-in-tile-industry
#3
Maryam Hormozi, Ramazan Mirzaei, Alireza Nakhaee, Shahrokh Izadi, Javid Dehghan Haghighi
The aim of the present study was to evaluate the effects of occupational exposure to lead (Pb) and cadmium (Cd) on markers of oxidative stress in glazers in tile industries. Total antioxidant capacity (TAC), malondialdehyde (MDA), and the activity of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) were determined in the blood of 80 subjects, including 40 glazers and 40 nonexposed subjects. Mean levels of blood Cd (8.90 ± 2.80 µg/L) and blood Pb (62.90 ± 38...
July 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29669481/diagnostic-value-of-complete-blood-count-in-paraquat-and-organophosphorus-poisoning-patients
#4
Yahui Tang, Lufeng Hu, Guangliang Hong, Dahai Zhong, Jiaxing Song, Guangju Zhao, Zhongqiu Lu
Complete blood count (CBC) is one of the most extensively used tests in clinical practice. In order to determine the diagnostic value of the CBC in paraquat (PQ) and organophosphorus (OPPs) poisoning, the CBC indices of PQ- and OPPs-poisoned patients were investigated in this study. A total of 96 PQ poisoning patients, 90 OPPs poisoning patients, and 188 healthy subjects were included in this study. The PQ- and OPPs-poisoned patients were divided into different groups according to their clinical symptoms. All CBC indices were analyzed by Fisher discriminant, partial least-squares discriminant analysis (PLS-DA), variance analysis, and receiver operating characteristic (ROC)...
July 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29665769/sublethal-chronic-effects-of-oral-dietary-exposure-to-deltamethrin-in-swiss-albino-mice
#5
Anita Tewari, H S Banga, Jps Gill
The hazards of dietary exposure to environmentally relevant levels of deltamethrin are poorly understood though studies enunciate the acute toxicity hazards. In this study, prolonged exposure to low levels of deltamethrin in mice was investigated. The mice were exposed daily via gavage method for 60 days. Four doses (0.1, 0.05, 0.01, and 0.005 mg/kg bwt/d) were selected, which are equal to or less than the maximum residue limits for deltamethrin permitted in animal food/feed. Liver, kidney, lungs, spleen, and testes were collected on day 61 for histology, residue, and biochemical analysis (aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALKP), total bilirubin (TBIL), total proteins (TPs), cholesterol (CHOL), urea, and creatinine)...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29665768/support-to-triage-and-public-risk-perception-considering-long-term-response-to-a-cs-137-radiological-dispersive-device-scenario
#6
Cristiane Ps Andrade, Cláudio J Souza, Eduardo Sn Camerini, Isabela S Alves, Hélio C Vital, Matthew Jf Healy, Edson Ramos De Andrade
A radiological dispersive device (RDD) spreads radioactive material, complicates the treatment of physical injuries, raises cancer risk, and induces disproportionate fear. Simulating such an event enables more effective and efficient utilization of the triage and treatment resources of staff, facilities, and space. Fast simulation can give detail on events in progress or future events. The resources for triage and treatment of contaminated trauma victims can differ for pure exposure individuals, while discouraging the "worried well" from presenting in the crisis phase by media announcement would relieve pressure on hospital facilities...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29665767/nano-cuo-impairs-spatial-cognition-associated-with-inhibiting-hippocampal-long-term-potentiation-via-affecting-glutamatergic-neurotransmission-in-rats
#7
Xiaoliang Li, Wei Sun, Lei An
Manufactured metal nanoparticles and their applications are continuously expanding because of their unique characteristics while their increasing use may predispose to potential health problems. Several studies have reported the adverse effects of copper oxide nanoparticles (nano-CuO) relative to ecotoxicity and cell toxicity, whereas little is known about the neurotoxicity of nano-CuO. The present study aimed to examine its effects on spatial cognition, hippocampal function, and the possible mechanisms. Male Wistar rats were used to establish an animal model, and nano-CuO was administered at a dose of 0...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29656705/suppressive-effects-of-neonatal-bisphenol-a-on-the-neuroendocrine-system
#8
R G Ahmed, G H Walaa, F S Asmaa
The aim of this study was to assess the effects of neonatal bisphenol A (BPA) administration on neuroendocrine features (the thyroid-brain axis). BPA (20 or 40 µg/kg) was orally administered to juvenile male albino rats ( Rattus norvegicus) from postnatal days (PNDs) 15 to 30. Both doses resulted in lower serum thyroxine (T4), triiodothyronine (T3), and growth hormone levels and higher thyrotropin level than the control levels at PND 30. In the neonatal cerebellum and cerebrum, vacuolation, pyknosis, edema, degenerative changes, and reductions in the size and number of the cells were observed in both treated groups...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29591889/impact-of-chromium-and-boron-compounds-on-the-reproductive-function-in-rats
#9
Iztleuov Marat, Mamyrbayev Arstan, Yeleuov Galymzhan, Jarkenov Timur, Iztleuov Yerbolat, Yeleuov Almasbek
The purpose of this research is to study the process of mutagenesis and the reproductive function in male rats under separate and combined exposure to chromium and boron compounds. The experiment was conducted on two groups of animals. The first group was used to assess the ability of potassium dichromate and boric acid to induce mutation in germ and somatic cells under isolated and combined administration with the use of the dominant lethal mutations test and the micronuclei test in the polychromatophilic erythrocytes of the bone marrow...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29591887/pathology-of-cigarettes-on-the-reproductive-system-and-ameliorative-effects-of-alpha-lipoic-acid-a-rat-model-study
#10
Halil Asci, Onur Erol, Hamit Yasar Ellidag, Esra Nur Tola, Mehtap Savran, Ozlem Ozmen
Cigarette smoking (CS) has some detrimental effects that occur via oxidative stress (OS). The aim of this work was to demonstrate the pathological and immunohistochemical effects of CS and the protective effects of a strong antioxidant alpha lipoic acid (ALA) on CS-induced genital system changes in a rat model. Twenty-eight female rats were randomly allocated to three groups as control, CS-exposed, and CS-exposed and ALA-treated. Reproductive tract organs were collected for biochemical and pathological examinations...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29591886/investigation-of-the-genotoxic-and-cytotoxic-effects-of-widely-used-neonicotinoid-insecticides-in-hepg2-and-sh-sy5y-cells
#11
Mine Şenyildiz, Adem Kilinc, Sibel Ozden
Neonicotinoids are a relatively new type of insecticide to control a variety of pests. Although they are generally considered to be safe, they can lead to harmful effects on human and environmental health. We aimed to investigate possible effects of common neonicotinoid insecticides (acetamiprid, clothianidin, imidacloprid, thiacloprid, and thiamethoxam) on cytotoxicity and DNA damage in human neuroblastoma (SH-SY5Y) and human hepatocellular carcinoma (HepG2) cells. Our results indicated that 50% of inhibitory concentration values of neonicotinoids are in the range of 0...
June 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29726790/response-to-carbon-monoxide-poisoning-cases-presenting-with-non-specific-symptoms-by-deniz-accuracy-of-triage-with-rad-57-pulse-co-oximeter-in-suspected-collective-intoxication-of-a-pediatric-population
#12
Jacques Bessereau, F Heireche, V Bremond, A Boutin, S Petit, M Tsapis, L Boiron, A Puget, P Garry, M Coulange, F Kerbaul
No abstract text is available yet for this article.
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29591890/cadmium-telluride-quantum-dots-induce-apoptosis-in-human-breast-cancer-cell-lines
#13
Saeed Naderi, Hakimeh Zare, Nima Taghavinia, Azam Irajizad, Mahmoud Aghaei, Mojtaba Panjehpour
INTRODUCTION: Semiconductor quantum dots (QDs), especially those containing cadmium, have undergone marked improvements and are now widely used nanomaterials in applicable biological fields. However, great concerns exist regarding their toxicity in biomedical applications. Because of the lack of sufficient data regarding the toxicity mechanism of QDs, this study aimed to evaluate the cytotoxicity of three types of QDs: CdTe QDs, high yield CdTe QDs, and CdTe/CdS core/shell QDs on two human breast cancer cell lines MDA-MB468 and MCF-7...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29591888/effects-of-t-2-and-fumonisin-b1-combined-treatment-on-in-vitro-mouse-embryo-development-and-blastocyst-quality
#14
Bence Somoskői, Melinda Kovács, Sándor Cseh
In the temperate region, most common mycotoxins are members of fusariotoxins. It often happens that food and forage are contaminated with two or more fusariotoxins at the same time. Effects of co-contamination are poorly documented, especially in the field of reproduction. The aim of our study was to assess the combined effect of the two common fusariotoxins, T-2 toxin (T-2) and Fumonisin B1 on early mouse embryo development in vitro. Embryo culture media contained either (1) 0.5 ng/ml T-2; 1, 2, or 10 ng/ml FB1 (group A, B, and C, respectively); or (2) 0...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29575980/atrazine-affects-craniofacial-chondrogenesis-and-axial-skeleton-mineralization-in-zebrafish-danio-rerio
#15
Benjamin S Walker, Alexander G Kramer, Christopher S Lassiter
Atrazine is a commonly used herbicide that has previously been implicated as an endocrine-disrupting compound. Previous studies have shown that estrogenic endocrine-disrupting compounds affect the development of the heart, cartilage, and bone in zebrafish ( Danio rerio). To determine whether atrazine has effects similar to other endocrine disruptors, zebrafish embryos were treated with a range of atrazine concentrations. Atrazine treatment at a low concentration of 0.1 µM resulted in significant differences in craniofacial cartilage elements, while concentrations ≥1 µM led to decreased survival and increased heart rates...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29562845/melatonin-attenuates-radiofrequency-radiation-900-mhz-induced-oxidative-stress-dna-damage-and-cell-cycle-arrest-in-germ-cells-of-male-swiss-albino-mice
#16
Neelam Pandey, Sarbani Giri
Increasing male infertility of unknown aetiology can be associated with environmental factors. Extensive use of mobile phones has exposed the general population to unprecedented levels of radiofrequency radiations (RFRs) that may adversely affect male reproductive health. Therefore, the present study investigated the effect of RFR Global System for Mobile communication (GSM) type, 900 MHz and melatonin supplementation on germ cell development during spermatogenesis. Swiss albino mice were divided into four groups...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29554819/in-vitro-evaluation-of-the-genotoxicity-of-ceo-2-nanoparticles-in-human-peripheral-blood-lymphocytes-using-cytokinesis-block-micronucleus-test-comet-assay-and-gamma-h2ax
#17
Serpil Könen-Adıgüzel, Serap Ergene
Engineered nanoparticles (ENPs) are used in a wide range of applications because of their unique properties. Cerium dioxide nanoparticles (CeO2 NPs) are one of the important ENPs, and they can cause negative health effects, such as genotoxicity, in humans and other living organisms. The aim of this work was to analyze the genotoxic effects of short-term (3-24 h) CeO2 NPs exposure to cultured human blood lymphocytes. Three genotoxicity systems "cytokinesis-block micronucleus test, comet assay, and gamma H2AX test" were used to show the genotoxic potential of CeO2 NPs (particle size <25 nm, concentrations: 6, 12, and 18 µg/mL)...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29554818/monitoring-metal-levels-in-water-and-multiple-biomarkers-in-the-grouper-epinephelus-tauvina-to-assess-environmental-stressors-on-the-arabian-gulf-coast-of-saudi-arabia
#18
Ashraf M Abdel-Moneim, Mohamed A Al-Kahtani, Omar M Elmenshawy, Hany Elsawy, Aly M Hafez, Marwa A Genena
In this field study, the levels of heavy metals (Pb, Fe, Co, Cu, and Zn) in water and a suite of biochemical and histological biomarkers in the grouper ( Epinephelus tauvina) were assessed at four sites in the Arabian Gulf. Samples were taken from a relatively non-urban reference site, called Salwa (S1), and three effluent-dominated sites, namely Al-aziziyah in southern Dammam city (S2), the Al-Jubail coast (S3), and Manifa (S4). Toxic metals, namely Pb and Co (at all sites) and Fe (at S3), were elevated in water samples relative to the internationally permissible limits...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29529943/protective-activity-of-pyruvate-against-vanadium-dependent-cytotoxicity-in-chinese-hamster-ovary-cho-k1-cells
#19
Iwona Zwolak, Dorota Gołębiowska
With increasing human exposure to vanadium-containing compounds and growing concern over their impact on human health, identification of safe methods for efficient treatment of vanadium poisoning may be of value. In this study, using Chinese hamster ovary (CHO-K1) cells, we show that the toxicity of vanadyl sulphate (VOSO4 ) is mitigated in the presence of sodium pyruvate. The exposure of CHO-K1 cells to 100 μM VOSO4 for 48 h induced significant cytotoxicity (measured with a resazurin assay) and elevation of the contents of malondialdehyde (MDA), a lipid peroxidation product, in the examined cells...
May 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29554820/asthma-from-hair-straightening-treatment-containing-formaldehyde-two-cases-and-a-review-of-the-literature
#20
James G Dahlgren, Patrick J Talbott
We report two cases of formaldehyde-containing hair straighteners causing new onset asthma. Formaldehyde has been reported to cause asthma in other settings. The purpose of this article is to examine two cases of asthma in hairdressers exposed to hair smoothing products and to review the relevant literature on formaldehyde exposure and asthma. The results indicated that both subjects developed asthma from repeated occupational exposure to formaldehyde during hair treatments. Both subjects became unable to tolerate hair straightening activity in their vicinity...
April 2018: Toxicology and Industrial Health
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