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Drug and Chemical Toxicology

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https://www.readbyqxmd.com/read/28925291/isolation-of-a-novel-compound-mimo2-from-the-methanolic-extract-of-moringa-oleifera-leaves-protective-effects-against-vanadium-induced-cytotoxity
#1
Olumayowa O Igado, Jan Glaser, Mario Ramos-Tirado, Ezgi Eylül Bankoğlu, Foluso A Atiba, Ulrike Holzgrabe, Helga Stopper, James O Olopade
Moringa oleifera is reported to be a miracle plant, with positive effects on practically every system in the animal body. The methanolic extract of Moringa oleifera leaves was fractionated using liquid-liquid fractionation, column chromatography and preparative high-performance liquid chromatography (HPLC). Bioassay guided fractionation using Ferric Reducing Antioxidant Power (FRAP) was used to determine the fraction with the highest antioxidative power. Chemical structure was elucidated with nuclear magnetic resonance (NMR) spectroscopy...
September 19, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28866965/perfusion-with-carbon-monoxide-does-not-affect-extracellular-glutamate-in-dialysates-of-the-hippocampus-of-freely-moving-mice
#2
Asuka Ito, Mostofa Jamal, Kiyoshi Ameno, Naoko Tanaka, Ayaka Takakura, Takanori Miki, Hiroshi Kinoshita
Carbon monoxide (CO) produces several neurological effects, including cognitive, mood, and behavioral disturbance. Glutamate is thought to play a particularly important role in learning and memory. Thus, the present study was aimed at investigating the local effect of CO on the glutamate level in the hippocampus of mice using in vivo reverse microdialysis. Mice were perfused with Ringer's solution (control) or CO (60-125 μM) in Ringer's solution into the hippocampus via microdialysis probe. Dialysate samples were collected every 20 min, and then analyzed with high-performance liquid chromatography coupled to an electrochemical detector...
September 4, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28854821/assessment-of-the-cytotoxicity-and-genotoxicity-properties-of-uvaria-chamae-p-beauv-annonaceae-and-morinda-lucida-benth-rubiaceae-in-mice
#3
M O Awodiran, A O Adepiti, K F Akinwunmi
The toxicity profile of medicinal plants is an important preclinical requirement in the development of phytomedicines. The cytotoxic and genotoxic effects of the leaf of Uvaria chamae P. Beauv (Annonaceae) and stem bark of Morinda lucida Benth (Rubiaceae) were investigated in order to provide information on their safety as antimalarial plants. The methanol extract of U. chamae and ethanol (70%) extract of M. lucida were separately orally administered (125, 250, and 750 mg/kg/day) to mice for 10 consecutive days...
August 31, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28854817/in-vitro-genotoxic-and-cytotoxic-effects-of-doxepin-and-escitalopram-on-human-peripheral-lymphocytes
#4
Hayal Cobanoglu, Mahmut Coskun, Akin Çayir, Munevver Coskun
Antidepressants are drugs used for the treatment of many psychiatric conditions including depression. There are findings suggesting that these drugs might have genotoxic, carcinogenic, and/or mutagenic effects. Therefore, the present in vitro study is intended to investigate potential genotoxic and cytotoxic effects of the antidepressants escitalopram (selective serotonin reuptake inhibitor) and doxepin (Tricyclic antidepressant) on human peripheral lymphocytes cytokinesis-block micronucleus (CBMN), sister chromatid exchange (SCE), and single cell gel electrophoresis (alkaline comet assay) were used for the purpose of the study...
August 31, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28771065/acrolein-induced-oxidative-stress-and-genotoxicity-in-rats-protective-effects-of-whey-protein-and-conjugated-linoleic-acid
#5
Birsen Aydın, Zülal Atlı Şekeroğlu, Vedat Şekeroğlu
Acrolein (AC), a highly reactive hazardous pollutant, poses serious threats to human health. Whey protein (WP) and conjugated linoleic acid (CLA) have beneficial health implications. We investigated the protective effects of WP and CLA against AC-induced toxicity in rats. The animals were orally gavaged with CLA (200 mg/kg/day), WP (200 mg/kg/day), AC (5 mg/kg/day), CLA + AC (200 + 5 mg/kg/day), and WP + AC (200 + 5 mg/kg/day) six days per week for 30 days. The oral administration of AC significantly induced oxidative stress by increasing thiobarbituric acid reactive substances (TBARS) and protein carbonyls (PCOs) levels and decreasing glutathione (GSH) level in the spleen, thymus, and polymorphonuclear leukocytes (PMNs)...
August 3, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28738695/a-research-on-the-genotoxicity-of-stevia-in-human-lymphocytes
#6
Aslı Uçar, Serkan Yılmaz, Şemsigül Yılmaz, Mustafa Sefa Kılıç
Stevia extracts are obtained from Stevia rebaudiana commonly used as natural sweeteners. It is ∼250-300 times sweeter than sucrose. Common use of stevia prompted us to investigate its genotoxicity in human peripheral blood lymphocytes. Stevia (active ingredient steviol glycoside) was dissolved in pure water. Dose selection was done using ADI (acceptable daily intake) value. Negative control (pure water), 1, 2, 4, 8 and 16 μg/ml concentrations which were equivalent to ADI/4, ADI/2, ADI, ADI × 2 and ADI × 4 of Stevia were added to whole-blood culture...
July 24, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28721745/pesticide-genotoxicity-in-cotton-picking-women-in-pakistan-evaluated-using-comet-assay
#7
Tayyaba Ali, Muhammad Ismail, Farkhanda Asad, Asma Ashraf, Usman Waheed, Qaiser M Khan
To control agricultural pests and meet the increasing food demands, pesticides use has been increased substantially over time. Although pesticides are relatively specific to their targets, they can affect non-target organisms and are hazardous for the population around the application areas particularly to the individuals engaged in different types of agricultural activities. This situation is worse in developing and under-developed countries where personal protective equipment is merely used and regulatory guidelines are hardly practiced...
July 19, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28678536/toxicity-assessment-of-ferula-gummosa-administration-during-pregnancy-lactation-and-juvenile-period-in-rat
#8
Mohammad Mahdi Vahedi, Davood Mahdian, Amir Hossein Jafarian, Mehrdad Iranshahi, Mahdi Esmaeilizadeh, Ahmad Ghorbani
Ferula gummosa is widely used in traditional medicine to treat a variety of ailments. This work evaluated the safety of F. gummosa root in pregnancy, lactation, and juvenile periods. This study was performed in three parts: (1) pregnant rats were received diet containing 0 (control), 150 , or 700 mg/kg of F. gummosa root during pregnancy; (2) Lactating rats were treated with diet containing the root (0, 150, or 700 mg/kg) during lactation period; (3) juvenile rats were received 4 weeks diet containing the root (0, 150, or 700 mg/kg)...
July 5, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28669220/effects-of-octenidine-mouth-rinse-on-apoptosis-and-necrosis-of-human-fibroblasts-and-epithelial-cells-an-in-vitro-study
#9
J Schmidt, V Zyba, K Jung, S Rinke, R Haak, R F Mausberg, D Ziebolz
This study aimed at comparing the cytotoxicity of a new octenidine mouth rinse (MR) on gingival fibroblasts and epithelial cells using different established MRs. Octenidol (OCT), Chlorhexidine 0.2% (CHX), Meridol (MER), Oral B (OB), and control (PBS only) were used. Human primary gingival fibroblasts (HGFIBs) and human primary nasal epithelial cells (HNEPCs) were cultivated in cell-specific media (2 × 10(5) cells/well) and treated with a MR or PBS for 1, 5, and 15 min. All tests were performed in duplicate and repeated 12 times...
July 3, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28669218/protective-effect-of-nigella-sativa-oil-against-acetamiprid-induced-reproductive-toxicity-in-male-rats
#10
Rachid Mosbah, Zouhir Djerrou, Alberto Mantovani
The present study was designed to investigate the adverse reproductive effects of acetamiprid, besides the possible protective role of Nigella sativa oil (NSO), as a potential antioxidant agent. Thirty-two male Wistar rats were allocated into four equal groups of eight, control (CRL), acetamiprid (ACMP, 27 mg/kg), Nigella sativa oil (NSO, 0.5 ml/kg) and in combination (ACMP + NSO). The experimental animals were dosed by gavage (5 days per week) for 45 consecutive days. Body weight gain, reproductive organs weights, sperm characteristics, testosterone, and thiobarbutiric acid-reactive substances (TBARS) levels were investigated...
July 3, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28122461/enrofloxacin-in-therapeutic-doses-alters-cytokine-production-by-porcine-pbmcs-induced-by-lipopolysaccharide
#11
Małgorzata Pomorska-Mól, Ewelina Czyżewska-Dors, Krzysztof Kwit, Zygmunt Pejsak
The effect of enrofloxacin on cytokine secretion by porcine peripheral blood mononuclear cells (PBMCs) was studied. Twenty 8-20-week-old pigs were randomly divided into two groups: control (C, n = 10) and experimental (E, n = 10) were used. Pigs from group E received enrofloxacin at therapeutic dose for 5 consecutive days. Blood samples were collected at 0 (before antibiotic administration), 2, 4 (during antibiotic therapy) 6, 9, 14 21, 35, 49, and 63 d of study (after treatment). PBMCs of pigs from both groups were incubated with or without lipopolysaccharide (LPS)...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27868436/an-oxovanadium-iv-complex-protects-murine-bone-marrow-cells-against-cisplatin-induced-myelotoxicity-and-dna-damage
#12
Abhishek Basu, Arin Bhattacharjee, Amalesh Samanta, Sudin Bhattacharya
Cisplatin (CDDP) is one of the first-line anticancer drugs that has gained widespread use against various forms of human malignancies. But, the therapeutic outcome of CDDP therapy is limited due to its adverse effects including myelotoxicity and DNA damage which may lead to the subsequent risk of developing secondary cancer. Hence, in search of a suitable cytoprotectant, this study investigated the probable protective efficacy of an oxovanadium(IV) complex, namely oxovanadium(IV)-L-cysteine methyl ester complex (VC-IV) against CDDP-induced myelosuppression and genotoxic damage in the bone marrow cells of Swiss albino mice...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27790921/combined-repeated-dose-and-reproductive-developmental-toxicity-screening-test-of-1-tert-butoxy-4-chlorobenzene-in-rats
#13
Yasuhiro Tsubokura, Ryuichi Hasegawa, Sunao Aso, Toshio Kobayashi, Takayuki Koga, Satsuki Hoshuyama, Yutaka Oshima, Katsumi Miyata, Yuji Kusune, Takako Muroi, Naoki Hashizume, Yoshiyuki Inoue, Shozo Ajimi, Kotaro Furukawa
We have carried out animal toxicity tests of chemicals for a chemical safety program implemented by the Ministry of Economy, Trade, and Industry of Japan. Here, we tested 1-tert-butoxy-4-chlorobenzene in a combined repeat-dose and developmental and reproductive toxicity test. The test chemical was administered daily by gavage to 9-week-old Crl:CD (SD) rats at doses of 0, 20, 100, and 500  mg/kg/d. Males were treated for 42 d beginning 14 d before mating. Females were treated from 14 d before mating to day 4 of lactation...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27784184/genotoxicity-of-casiopeina-iii-ea-in-mouse-bone-marrow-cells
#14
Lucila Álvarez-Barrera, Juan J Rodríguez-Mercado, Michel López-Chaparro, Mario A Altamirano-Lozano
Casiopeina III-Ea® (Cas III-Ea®) is a chelated copper complex with antineoplastic activity that is capable of reducing tumor size and inducing antiproliferative and apoptotic effects. However, little is known about its in vivo genotoxic effects. Therefore, this study evaluated two cytogenetic and two proliferative parameters 24 h after the administration of Casiopeina III-Ea® to male CD-1 mice. Three doses of Cas III-Ea® were administered by intraperitoneal injections of 1.69, 3.39 and 6.76 mg/kg (corresponding to 1/8, 1/4 and 1/2 of LD50, respectively)...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27707005/genotoxicity-of-antiobesity-drug-orlistat-and-effect-of-caffeine-intervention-an-in-vitro-study
#15
Manoswini Chakrabarti, Ilika Ghosh, Aditi Jana, Manosij Ghosh, Anita Mukherjee
CONTEXT: Obesity is a major global health problem associated with various adverse effects. Pharmacological interventions are often necessary for the management of obesity. Orlistat is an FDA-approved antiobesity drug which is a potent inhibitor of intestinal lipases. OBJECTIVE: In the current study, orlistat was evaluated for its genotoxic potential in human lymphocyte cells in vitro and was compared with that of another antiobesity drug sibutramine, presently withdrawn from market due its undesirable health effects...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27631679/synthesis-characterization-and-determination-of-genotoxic-effect-of-a-novel-dimeric-8-hydroxyquinoline-cd-ii-scn-complex
#16
Hatice Tunca, Ahmet Ali Berber, Kubra Çanakçi, Murat Tuna, Salih Zeki Yildiz, Hüseyin Aksoy
In this study, a Cd(II) complex was synthesized using 8-hydroxyquinoline and thiocyanate as the ligands and structurally characterized with the combination of FTIR, (1)H-NMR, (13)C-NMR, UV-vis, and MS spectral data. Then, genotoxic effects of the prepared complex were investigated. Genotoxic properties of the dimeric 8-hydroxyquinolinthiocyanatoCd(II) [Cd2(8Q)2(SCN)2] complex synthesized as drug raw material were analyzed in human peripheral blood lymphocytes. Concentrations of 1, 2, 4, 6, and 8 μg/mL [Cd2(8Q)2(SCN)2] were used for 24 and 48  h durations...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27600436/in-vitro-cytogenetic-evaluation-of-the-particular-combination-of-flurbiprofen-and-roxithromycin
#17
Taygun Timocin, Mehmet Tahir Husunet, Ebrahim Valipour, Mostafa Norizadeh Tazehkand, Rima Celik, Mehmet Topaktas, Hasan B Ila
Flurbiprofen (FLB) (anti-inflammatory and analgesic drug) and roxithromycin (RXM) (antibiotic) were widely used in world wide. This study deals with investigation of genotoxicity, cytotoxicity, and oxidative stress effects of a particular combination of these drugs in human cultured lymphocytes. Also, DNA damaging-protective effects of combination of these drugs were analyzed on plasmid DNA. Human lymphocytes were treated with different concentrations (FLB + RXM; 10 μg/mL + 25 μg/mL, 15 μg/mL + 50 μg/mL, and 20 μg/mL + 100 μg/mL) of the drugs following by study of their genotoxic and cytotoxic effects by analysis of cytokinesis-block micronucleus test and nuclear division index, respectively...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27600313/fluorinated-benzenesulfonamide-anticancer-inhibitors-of-carbonic-anhydrase-ix-exhibit-lower-toxic-effects-on-zebrafish-embryonic-development-than-ethoxzolamide
#18
Justina Kazokaitė, Ashok Aspatwar, Visvaldas Kairys, Seppo Parkkila, Daumantas Matulis
The toxic effects of two recently discovered inhibitors (VD12-09 and VD11-4-2) that selectively and with extraordinary strong, picomolar binding affinity to human carbonic anhydrase (CA) isoform IX were investigated on zebrafish embryonic development. CA IX has been recently introduced as an anticancer target since it is highly overexpressed in numerous human cancers but nearly absent in normal tissues. Morphological changes in zebrafish treated by the compounds were studied by light-field microscopy and histological analysis...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27580929/4-nonylphenol-induced-dna-damage-and-repair-in-fish-channa-punctatus-after-subchronic-exposure
#19
Madhu Sharma, Pooja Chadha
The detection of a possible DNA damaging effect of 4-nonylphenol (NP) after subchronic exposure and repair after cessation of exposure to Channa punctatus is the aim of the present study. Channa punctatus was exposed to different concentrations (0.15 mg/l, 0.10 mg/l, and 0.07 mg/l) of NP along with positive control (ethanol) and negative control (water) for 90 d and after that allowed to recover for 30 d. Comet assay and micronucleus assay were used for the determination of DNA damage and repair by using blood cells...
July 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27560095/assessment-of-mutagenic-hematological-and-oxidative-stress-biomarkers-in-liver-of-nile-tilapia-oreochromis-niloticus-linnaeus-1758-in-response-to-sublethal-verapamil-exposure
#20
Malachy N O Ajima, Pramod K Pandey, Kundan Kumar, Nalini Poojary
The influx of pharmaceutical drugs and their metabolites have been reported to cause negative impact on aquatic biota. In this study, effects of long-term exposure of verapamil on mutagenic, hematological parameters and activities of the oxidative enzymes of Nile tilapia, Oreochromis niloticus were investigated for 60 days exposure at the concentrations of 0.29, 0.58 and 1.15 mg L(-1) in the fish liver. The exposure resulted in significantly high (p < 0.05) micronuclei induction of peripheral blood cells at the peak on day 30 at 1...
July 2017: Drug and Chemical Toxicology
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