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Journal of Biochemical and Molecular Toxicology

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https://www.readbyqxmd.com/read/30019796/sodium-acetate-sodium-acid-pyrophosphate-and-citric-acid-impacts-on-isolated-peripheral-lymphocyte-viability-proliferation-and-dna-damage
#1
Yasmina M Abd-Elhakim, Abeer Anwar, Mohamed M Hashem, Gihan G Moustafa, Khaled Abo-El-Sooud
The present study examined the impacts of sodium acetate (SA), sodium acid pyrophosphate (SAPP), and citric acid (CA) on the viability, proliferation, and DNA damage of isolated lymphocytes in vitro. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and lactate dehydrogenase (LDH) release assays were adopted to evaluate cell viability, while comet assay was employed to assess the genotoxic effects. The cells were incubated with different levels of SA (50, 100, and 200 mM), SAPP (25, 50, and 100 mM/L), or CA (100, 200, and 300 μg/mL)...
July 18, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/30015991/inhibition-effects-of-pesticides-on-glutathione-s-transferase-enzyme-activity-of-van-lake-fish-liver
#2
Muhammet Serhat Özaslan, Yeliz Demir, Mine Aksoy, Ömer Irfan Küfrevioğlu, Şükrü Beydemir
Glutathione-S-transferases (GSTs) have a function in xenobiotic metabolism. They are a significant multifunctional family with a wide variety of catalytic activities. In the current study, we determined in vitro inhibition effects of 2,4-dichlorophenoxyacetic acid dimethylamine salt (2,4-D DMA), haloxyfop-P-methyl, glyphosate isopropylamine, dichlorvos, and λ-cyhalothrin on purified GST. For this purpose, GST were purified from Van Lake fish (Chalcalburnus tarichii Pallas) liver with 29.25 EU mg-1 specific activity and 10...
July 17, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/30004169/upregulation-of-mir-874-3p-and-mir-874-5p-inhibits-epithelial-ovarian-cancer-malignancy-via-sik2
#3
Bairong Xia, Mei Lin, Wei Dong, Hong Chen, Bing Li, Xiaye Zhang, Yan Hou, Ge Lou
Based on miR-874 expression levels in the GSE47841 microarray, we hypothesized that the mature products of miR-874, miR-874-3p, or miR-874-5p, would inhibit epithelial ovarian cancer (EOC) cell proliferation, metastasis, and chemoresistance. We first examined miR-874-3p and miR-874-5p expression levels in primary EOC tumor tissue samples and found that they were significantly decreased. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) cell proliferation and transwell assays revealed that miR-874-3p and miR-874-5p significantly inhibit EOC cell proliferation, migration, and invasion...
July 13, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/30004155/targeting-mitochondria-by-anthelmintic-drug-atovaquone-sensitizes-renal-cell-carcinoma-to-chemotherapy-and-immunotherapy
#4
Dehong Chen, Xiaosong Sun, Xuejun Zhang, Jun Cao
Targeting mitochondria respiration is an effective therapeutic strategy in renal cell carcinoma (RCC). Atovaquone is a FDA-approved antibiotic but is also known as a mitochondrial inhibitor. We found that atovaquone inhibited proliferation and induced apoptosis of RCC cells. Mechanistically, atovaquone inhibits mitochondrial respiration in a concentration-dependent and time-dependent manner, via targeting mitochondrial respiratory complex III. Although increased glycolysis was observed in atovaquone-treated cells, atovaquone decreased ATP levels...
July 13, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29999212/chemopreventive-effect-of-sulindac-in-combination-with-epigallocatechin-gallate-or-kaempferol-against-1-2-dimethyl-hydrazine-induced-preneoplastic-lesions-in-rats-a-comparative-study
#5
Nahed M A Hassanein, Eman S G Hassan, Amany M Hegab, Helmy M Sayd Elahl
A systematic investigation of the chemopreventive effect of sulindac (SL) in combination with either epigallocatechin gallate (EGCG) or kaempferol similar (KMP) has been carried out 1,2-dimethyl hydrazine-treated rats (DMH). Those SL combinations with KMP and EGCG have enhanced the SL activity producing greater antioxidant, anti-inflammatory, antiproliferating, and apoptotic activities in both combinations than SL alone. The chemopreventive effects of SL with both EGCG and KMP were demonstrated by a decrease in thiobaribituric acid reactive substances level, tissue nitric oxide (NO), serum, and tissue β-catenin as well as a reduction in the multiplicity of aberrant crypt foci (ACF) with alleviation in the dysplastic changes that resulted from DMH administration...
July 12, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29992784/the-synthesis-of-n-benzoylindoles-as-inhibitors-of-rat-erythrocyte-glucose-6-phosphate-dehydrogenase-and-6-phosphogluconate-dehydrogenase
#6
Sinan Bayindir, Yusuf Temel, Adnan Ayna, Mehmet Ciftci
Glucose-6-phosphate dehydrogenase (G6PD) and 6-phosphogluconate dehydrogenase (6PGD) play an important function in various biochemical processes as they generate reducing power of the cell. Thus, metabolic reprogramming of reduced nicotinamide adenine dinucleotide phosphate (NADPH) homeostasis is reported to be a vital step in cancer progression as well as in combinational therapeutic approaches. In this study, N-benzoylindoles 9a--9d, which form the main framework of many natural indole derivatives such as indomethacin and N-benzoylindoylbarbituric acid, were synthesized through three easy and effective steps as an in vitro inhibitor effect of G6PD and 6PGD...
July 10, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29992723/hydrogen-peroxide-modulates-redox-status-energy-metabolism-and-gene-expression-in-a-dose-and-time-dependent-manner-in-rat-liver
#7
Omar A Ahmed-Farid, Hanan A Rizk, Ahmed M Shehata
AIM: The aim of this study was to investigate the effect of three different hydrogen peroxide (H2 O2 ) levels on blood and liver oxidative status, energy metabolites, and gene expression in male albino rats at two time intervals (2 and 4 weeks). METHODS: A total of 32 rats were divided into four groups. The first group received tap water and served as control. The second group received low dose of hydrogen peroxide (H2 O2 ; 0.25%), The third group received medium dose of H2 O2 (0...
July 10, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29992715/adverse-effects-on-macrophage-lipid-transport-and-survival-by-high-density-lipoprotein-from-patients-with-coronary-heart-disease
#8
S Sini, D Deepa, S Harikrishnan, N Jayakumari
High density lipoprotein (HDL)-macrophage interactions have the potential to modulate macrophage function in a beneficial way to prevent the development of lipid-loaded foam cell formation in atherosclerosis. Although HDL is atheroprotective, it can become dysfunctional in chronic inflammatory conditions and increase cardiovascular risk. Here, we examined the effect of dysfunctional-HDL from patients with coronary artery disease, on macrophage function in comparison to functional-HDL from controls. Exposure of macrophages to dysfunctional-HDL for 24 h resulted significant increase in cellular oxidative stress, cholesterol, and cytotoxicity...
July 10, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29992683/juglone-ascorbic-acid-synergy-inhibits-metastasis-and-induces-apoptotic-cell-death-in-poorly-differentiated-thyroid-carcinoma-by-perturbing-sod-and-catalase-activities
#9
Sujay Gaikwad, Avik Chakraborty, Sukeshani Salwe, Vainav Patel, Savita Kulkarni, Sharmila Banerjee
Anaplastic thyroid carcinoma (ATC) requires more innovative approaches as the current regimes for therapy are inadequate, also most anticancer drugs cause general suppression of physiological functions. However, therapy with limited nontarget tissue damage is desirable. In the present study, we show prooxidant ability of ascorbic acid, which enhances cytotoxicity induced by juglone. We decipher that juglone-ascorbate combination induces reactive oxygen species-mediated apoptosis leading to cell death in ARO cell line originated from ATC...
July 10, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29992668/in-vitro-evaluation-of-biomarkers-of-nephrotoxicity-through-gene-expression-using-gentamicin
#10
Maria A A Campos, Leonardo A de Almeida, Marina F Grossi, Carlos A Tagliati
Acute renal failure is one of the most frequent effects observed after taking medicine. Such situations have been tardily discovered, given that existing methods for assessing toxicity are not predictive. In this light, the present work evaluated the effects of gentamicin, a form of nephrotoxic drug, on HK-2 and HEK-293 cells. By using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and flow cytometry, both cells demonstrated that cytotoxicity occurs in a dose-dependent manner through the processes of apoptosis and cell necrosis...
July 10, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29992664/novel-amides-of-1-1-bis-carboxymethylthio-1-arylethanes-synthesis-characterization-acetylcholinesterase-butyrylcholinesterase-and-carbonic-anhydrase-inhibitory-properties
#11
Parham Taslimi, Sabiya Osmanova, Cuneyt Caglayan, Fikret Turkan, Sabira Sardarova, Vagif Farzaliyev, Afsun Sujayev, Nastaran Sadeghian, İlhami Gulçin
The thiolation reaction was carried out in a benzene solution at 80°C and p-substituted ketones and mercaptoacetic acid in a molar ratio (1:4) of in the presence of a catalytic amount of toluene sulfonic acids. The enzyme inhibition activities of the novel amides of 1,1-bis-(carboxymethylthio)-1-arylethanes derivatives were investigated. These novel amides of 1,1-bis-(carboxymethylthio)-1-arylethanes derivatives showed good inhibitory action against acetylcholinesterase (AChE) butyrylcholinesterase (BChE), and human carbonic anhydrase I and II isoforms (hCA I and II)...
July 10, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29984873/characterization-and-inhibition-effects-of-some-metal-ions-on-carbonic-anhydrase-enzyme-from-kangal-akkaraman-sheep
#12
Umit M Kocyigit, Parham Taslimi, İlhami Gulçin
In this work, the carbonic anhydrase (CA) enzyme was purified from Kangal Akkaraman sheep in Sivas, Turkey with specific activity value of 6681.57 EU/mg and yield of 14.90% with using affinity column chromatography. For designating the subunit molecular mass and enzyme purity, sodium dodecyl sulfate polyacrylamide gel electrophoresis method was used and single band for this procedure was obtained. The molecular mass of CA enzyme was found as 28.89 kDa. In this study, the optimum temperature and optimum pH were obtained from 30 and 7...
July 9, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29984871/study-on-the-potential-way-of-hepatic-cytotoxicity-of-n-n-dimethylformamide
#13
Shiqing Li, Cui Wang
The intermediate metabolites and redox status imbalance were supported as the two major points for N,N-dimethylformamide (DMF)-induced hepatotoxicity. However, the potential mechanism has not yet been concerned. By applying two inhibitors, this study tried to seek the major role in DMF-induced toxicity on HL7702 cell. We observed that DMF induced cell apoptosis through mitochondrial-dependent and p53 pathway. Inhibition reactive oxygen species by catalase remarkably attenuated the mitochondrial transmembrane potential (MMP), apoptotic proteins, and apoptosis...
July 9, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29984869/1h-indazole-molecules-reduced-the-activity-of-human-erythrocytes-carbonic-anhydrase-i-and-ii-isoenzymes
#14
Zuhal Alim
Carbonic anhydrase (CA) is an important metabolic enzyme family closely related to many physiological and pathological processes. Currently, carbonic anhydrase inhibitors are the target molecules in the treatment and diagnosis of many diseases. In present study, we investigated the inhibitory effects of some indazole molecules on the CA-I and CA-II isoenzymes isolated from human erythrocytes. We showed that human CA-I and CA-II activities were reduced by of some indazoles at low concentrations. IC50 values, Ki constants, and inhibition types for each indazole molecule were determined...
July 9, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29979475/molecular-modeling-biochemical-characterization-and-pharmacological-properties-of-cc-3-spase-a-platelet-aggregating-thrombin-like-enzyme-purified-from-cerastes-cerastes-venom
#15
Fatah Chérifi, Samah Saoud, Fatima Laraba-Djebari
Cc3 -SPase (30 kDa-proteinase; pI 5.98) was isolated from Cerastes cerastes venom. Its sequence of 271 residues yielded from LC-MALDI-TOF showed high degrees of homology when aligned with other proteinases. Cc3 -SPase cleaved natural and synthetic proteins such as casein and fibrinogen leaving fibrin clots unaffected. Cc3 -SPase was fully abolished by ion chelators, whereas aprotinin, antithrombin III (Sigma Aldrich, Saint-Louis, Missouri, USA), and heparin were ineffective. Affinity of Cc3 -SPase to benzamidine indicated the presence of an aspartate residue in the catalytic site as confirmed by three-dimensional structure consisting of 14 β-strands and four α-helices...
July 6, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29975452/mir-106b-regulates-the-apoptosis-and-tumorigenesis-of-hepatocellular-carcinoma-via-targeting-zinc-finger-and-btb-domain-containing-protein-7a-zbtb7a
#16
Xiao Liang, Qinghua Zhao, Tingting Geng, Shengshu Luo, Qin He
MicroRNAs play vital regulatory roles in various type of tumorigenesis. We aimed to explore the functional microRNAs that might play as therapeutic targets in hepatocellular carcinoma (HCC). In this study, our results revealed that microRNA-106b was significantly increased in HCC tumor tissues. However, miR-106b knockdown remarkably suppressed the growth and increased the apoptosis of Hub-7 HCC cells. Biological analysis indicated that miR-106b directly targeted toZinc finger and BTB domain-containing protein 7A (Zbtb7a) to regulate the apoptosis of Hub-7 cells...
July 5, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29975450/intermolecular-amination-of-allylic-and-benzylic-alcohols-leads-to-effective-inhibitions-of-acetylcholinesterase-enzyme-and-carbonic-anhydrase-i-and-ii-isoenzymes
#17
Ufuk Atmaca, Alper Yıldırım, Parham Taslimi, Seda Tuncel Çelik, İlhami Gülçin, Claudiu T Supuran, Murat Çelik
In this study, we aimed to determine the inhibition effects of novel synthesized sulfamates (2a-g), sulfonamides (3b-f), carbonyl sulfonamides (3h and i), and carbonyl sulfamates (4h and 4i), which were tested against two human cytosolic carbonic anhydrase I and II isozymes (hCA I and II) and acetylcholinesterase (AChE) enzyme. For inhibition properties of allylic sulfamates, the half maximal inhibitory concentration (IC50 ) and inhibition constant (Ki ) were calculated for each novel compounds. The allylic sulfamates showed that Ki values are in the range of 187...
July 5, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29975447/oxidative-stress-induced-renal-telomere-shortening-as-a-mechanism-of-cyclosporine-induced-nephrotoxicity
#18
Sina Raeisi, Amir Ghorbanihaghjo, Hassan Argani, Siavoush Dastmalchi, Morteza Seifi, Babollah Ghasemi, Teimour Ghazizadeh, Mehran Mesgari Abbasi, Pouran Karimi
Due to the association of oxidative stress and telomere shortening, it was aimed in the present study to investigate the possibility whether cyclosporine-A exerts its nephrotoxic side effects via induction of oxidative stress-induced renal telomere shortening and senescent phenotype in renal tissues of rats. Renal oxidative stress markers, 8-hydroxydeoxyguanosine, malondialdehyde, and protein carbonyl groups were measured by standard methods. Telomere length and telomerase activity were also evaluated in kidney tissue samples...
July 5, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29975445/antiapoptotic-effects-of-vitamins-c-and-e-against-cypermethrin-induced-oxidative-stress-and-spermatogonial-germ-cell-apoptosis
#19
Jitender Kumar Bhardwaj, Priya Kumari, Priyanka Saraf, Abhay Singh Yadav
Toxicological studies have demonstrated the relation between use of agrochemicals and fertility issues within males. Thus, the present study aimed to elucidate the propensity of cypermethrin (CYP) in bringing testicular germ cell apoptosis and effective attenuation by vitamins C and E in caprines. Reproductive toxicity of CYP was evaluated using histomorphological, cytological, and biochemical changes in the testicular germ cells in dose-dependent (1, 5, 10 μg/mL) and time-dependent (4, 6, 8 h) manner. Histological and ethidium bromide/acridine orange fluorescence staining exhibited that vitamins C and E (0...
July 5, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29975444/gsh-gssg-redox-couple-plays-central-role-in-aryl-hydrocarbon-receptor-dependent-modulation-of-cytochrome-p450-1a1
#20
Mahmoud Omidi, Ali Ghafarian-Bahraman, Afshin Mohammadi-Bardbori
The redox regulation of aryl hydrocarbon receptor (AHR) target genes such as the best characterized, cytochrome P450 1A1 (CYP1A1) has not been known. Therefore the aim of this study was to explore how cellular redox state can influence on AHR-dependent modulation of CYP1A1 transcription and enzyme activities. Male BALB/c albino mice, HepG2 cells, and human hepatoma cell line (HepG2-XRE-Luc) carrying CYP1A1 response elements were exposed to suggested endogenous ligand of AHR,6-formylindolo[3,2-b] carbazole (FICZ) alone or in combination with, buthionine-(S,R)-sulfoximine (BSO) or N-acetyl-l-cysteine (NAC)...
July 5, 2018: Journal of Biochemical and Molecular Toxicology
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