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Journal of Biochemical and Molecular Toxicology

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https://www.readbyqxmd.com/read/29719095/microrna-135a-alleviates-oxygen-glucose-deprivation-and-reoxygenation-induced-injury-in-neurons-through-regulation-of-gsk-3%C3%AE-nrf2-signaling
#1
Xiaobin Liu, Min Li, Mingshan Hou, Weidong Huang, Jinning Song
MicroRNAs (miRNAs) have been suggested as pivotal regulators in the pathological process of cerebral ischemia and reperfusion injury. In this study, we aimed to investigate the role of miR-135a in regulating neuronal survival in cerebral ischemia and reperfusion injury using an in vitro cellular model induced by oxygen-glucose deprivation and reoxygenation (OGD/R). Our results showed that miR-135a expression was significantly decreased in neurons with OGD/R treatment. Overexpression of miR-135a significantly alleviated OGD/R-induced cell injury and oxidative stress, whereas inhibition of miR-135a showed the opposite effects...
May 2, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29719092/evaluation-of-the-toxicity-effects-of-silk-fibroin-on-human-lymphocytes-and-monocytes
#2
Parvaneh Naserzadeh, Seyed Alireza Mortazavi, Khadijeh Ashtari, Ahmad Salimi, Mehdi Farokhi, Jalal Pourahmad
Silk fibroin nanoparticles (SFNPs) as a natural polymer have been utilized in biomedical applications such as suture, tissue engineering-based scaffolds, and drug delivery carriers. Since there is little data regarding the toxicity effects on different cells and tissues, we aimed to determine the toxicity mechanisms of SFNPs on human lymphocytes and monocytes based on reliable methods. Our results showed that SFNPs (0.5, 1, and 2 mg/mL) induced oxidative stress via increasing reactive oxygen species production, mitochondrial membrane potential (∆Ψ) collapse, which was correlated to cytochrome c release and Adenosine diphosphate (ADP)/Adenosine tri phosphate (ATP) ratio increase as well as lysosomal as another toxicity mechanism, which led to cytosolic release of lysosomal digestive proteases, phosphor lipases, and apoptosis signaling...
May 2, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29719090/apolipoprotein-c1-promotes-prostate-cancer-cell-proliferation-in-vitro
#3
Wei-Peng Su, Li-Na Sun, Shun-Liang Yang, Hu Zhao, Teng-Yue Zeng, Wei-Zhen Wu, Dong Wang
Here, we aimed to investigate the carcinogenic effects of apolipoprotein C1 (APOC1) in prostate cancer (PCa). APOC1 expression was evaluated in PCa and normal prostate specimens, and lentivirus-mediated RNA interference was used to knockdown APOC1 in DU145 cells. The effects of APOC1 silencing on cell proliferation, cell cycle arrest, and apoptosis were assessed. APOC1 expression was much higher in PCa tissues than in normal tissues. Moreover, APOC1 silencing inhibited cell proliferation and colony formation, arrested cell cycle progression, and enhanced apoptosis in DU145 cells...
May 2, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29697884/lophirones-b-and-c-halt-acetaminophen-hepatotoxicity-by-upregulating-redox-transcription-factor-nrf-2-through-akt-pi3k-and-pkc-pathways
#4
Najeeb O Aliyu, Rafiat A Ajala-Lawal, Taofeek O Ajiboye
We investigated the mechanism of lophirones B- and C-mediated protection against acetaminophen hepatotoxicity. Mice were pretreated with 20 mg/kg body weight lophirones B and C for 7 days and challenged with acetaminophen on day 7. Acetaminophen raised nuclear factor-κB (NF-κB) in the liver of mice but lowered protein kinase B (Akt). Although, acetaminophen produced no significant alteration on nuclear erythroid related factor-2 (Nrf-2), phosphoinositide 3-kinase (PI3K) and protein kinase C (PKC), lophirones B and C raised the level of these proteins and Akt...
April 26, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29687528/nobiletin-protects-human-retinal-pigment-epithelial-cells-from-hydrogen-peroxide-induced-oxidative-damage
#5
Libin Liu, Xing Wei Wu
Nobiletin (3',4',5,6,7,8-hexamethoxyflavone), a dietary polymethoxylated flavonoid found in Citrus fruits, has been reported to have antioxidant effect. However, the effect of nobiletin on human retinal pigment epithelium (RPE) cells induced by hydrogen peroxide (H2 O2 ) is still unclear. Therefore, we investigated the protective effect of nobiletin against H2 O2 -induced cell death in RPE cells. Our results demonstrated that nobiletin significantly increased cell viability from oxidative stress. Nobiletin inhibited H2 O2 -induced ROS production and caspase-3/7 activity in ARPE-19 cells...
April 24, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29687521/signal-pathways-diseases-and-functions-associated-with-the-mir-19a-92a-cluster-and-the-use-of-berberine-to-modulate-the-expression-of-this-cluster-in-multiple-myeloma-cells
#6
Zhao Yin, Juhua Yang, Rong Ning, Yanjun Liu, Maoxiao Feng, Chunmin Gu, Jia Fei, Yumin Li
BACKGROUND: Berberine downregulated miR-19a/92a cluster expression in multiple myeloma (MM) cells. METHODS: The cell viability of MM cells after berberine treatment was measured by CCK8 assay. qRT-PCR assay validated miR-19a/92a expression in multiple myeloma cells. TAM database analyzed miR-19a/92a-associated disease. miREnvironment database revealed that effects of environmental factors on the miR-19a/92a cluster. By targeting the seed region in the miRNA, the role of t-anti-miR-19a/92a cluster was evaluated by cell proliferation, migration, and colony formation...
April 24, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29667781/ameliorative-effect-of-nanoencapsulated-flavonoid-against-chlorpyrifos-induced-hepatic-oxidative-damage-and-immunotoxicity-in-wistar-rats
#7
Sanvidhan G Suke, Prasad Sherekar, Vivek Kahale, Shaktipal Patil, Dharmendra Mundhada, Vivek M Nanoti
The theme of the present work is to evaluate the protective effect of nanoencapsulated quercetin (NEQ) against chlorpyrifos (CPF)-induced hepatic damage and immune alterations in animals. Nanoparticles (NP) drug encapsulation was prepared. Forty male Wistar rats were divided into eight groups. Two groups served as control and CPF (13.5 mg/kg) treatment for 28 days. Other three groups were free quercetin (QC), NP and NEQ treated with 3 mg/kg respectively for 15 days; whereas remaining three groups received treatment of CPF and QC, NP, NEQ, respectively, for 15 days...
April 18, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29667773/benzyl-isothiocyanate-attenuates-the-hydrogen-peroxide-induced-interleukin-13-expression-through-glutathione-s-transferase-p-induction-in-t-lymphocytic-leukemia-cells
#8
Yue Tang, Sho Naito, Naomi Abe-Kanoh, Seiji Ogawa, Shu Yamaguchi, Beiwei Zhu, Yoshiyuki Murata, Yoshimasa Nakamura
We investigated the effect of benzyl isothiocyanate (BITC) on the hydrogen peroxide-induced gene expression of a T-helper-2 cytokine, interleukin (IL)-13, in T lymphocytic leukemia Jurkat cells. The 24-h pretreatment of BITC significantly inhibited the IL-13 expression enhanced by hydrogen peroxide. Although the BITC pretreatment did not change the enhanced level of the phosphorylated c-Jun N-terminal kinase (JNK), it significantly inhibited the nuclear translocation of c-Jun induced by hydrogen peroxide. BITC also increased the protein expression of glutathione S-transferase (GST) isozymes, GSTP1/2, as well as the total GST activity...
April 18, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29660801/evaluation-of-long-term-effects-of-artificial-sweeteners-on-rat-brain-a-biochemical-behavioral-and-histological-study
#9
Oytun Erbaş, Mümin Alper Erdoğan, Asghar Khalilnezhad, Volkan Solmaz, Fulya Tuzcu Gürkan, Gürkan Yiğittürk, Hüseyin Avni Eroglu, Dilek Taskiran
The aim of the present study was to compare the effects of artificial sweeteners (aspartame, saccharin, and sucralose) on rat brain. Twenty-four adult male Sprague-Dawley rats were included in the study. The control group (n = 6) received regular tap water, whereas other groups received aspartame (3 mg/kg/day, n = 6,) or saccharin (3 mg/kg/day, n = 6) or sucralose (1.5 mg/kg/day, n = 6) in the drinking water. Following 6 weeks, the passive avoidance learning (PAL) test was performed to evaluate the neurobehavioral effects of sweeteners...
April 16, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29660796/mechanistic-and-structural-insights-into-the-in-vitro-inhibitory-action-of-hypericin-on-glutathione-reductase-purified-from-baker-s-yeast
#10
Ozlem Dalmizrak, Kerem Teralı, Redwan Kawa Abdullah, Nazmi Ozer
This work aims at studying the interaction between glutathione reductase (GR) and hypericin. The type of inhibition was determined by measuring changes in GR activity at increasing concentrations of hypericin as well as at varying concentrations of glutathione disulfide (GSSG) and nicotinamide adenine dinucleotide phosphate (NADPH), and the binding pose of hypericin was predicted by molecular docking. Accordingly, hypericin emerges as an effective inhibitor of GR. When the variable substrate is GSSG, the type of inhibition is competitive...
April 16, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29485738/curcumin-suppressed-the-prostate-cancer-by-inhibiting-jnk-pathways-via-epigenetic-regulation
#11
Wanli Zhao, Xudong Zhou, Guisong Qi, Yuexian Guo
Curcumin is a component of turmeric and is isolated from the rhizomes of the plant Curcuma longa. Curcumin was reported to have therapeutic effects on prostate cancer. Yet the molecular mechanism of curcumin remains unclear. In this study, mouse prostate cancer xenograft model was established and subjected to curcumin treatment. GST-c-Jun pull down kinase assays were performed to study the phospho-c-Jun level. Cell Counting Kit-8 assay kit was utilized to detect the cell viability. Immunoblotting and qRT-PCR were performed for target gene expression analysis...
February 27, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29473699/evaluation-of-chalcones-as-inhibitors-of-glutathione-s-transferase
#12
Muhammet Serhat Özaslan, Yeliz Demir, Hatice Esra Aslan, Şükrü Beydemir, Ömer İrfan Küfrevioğlu
Glutathione S-transferases (GSTs) are the superfamily of multifunctional detoxification isoenzymes and play an important role in cellular signaling. In the present study, potential inhibition effects of chalcones were tested against human GST. For this purpose, GST was purified from human erythrocytes with 5.381 EU⋅mg-1 specific activity and 51.95% yield using a GSH-agarose affinity chromatographic method. The effects of chalcones on in vitro GST activity were tested at various concentrations. Ki constants of chalcones were found in the range of 7...
February 23, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29469967/biotransformation-of-4-fluoro-n-1-2-propan-2-yl-phenoxy-ethyl-8-azabicyclo-3-2-1-octan-3-yl-benzenesulfonamide-a-novel-potent-5-ht-7-receptor-antagonist-with-antidepressant-like-and-anxiolytic-properties-in-vitro-and-in-silico-approach
#13
Karolina Słoczyńska, Katarzyna Wójcik-Pszczoła, Vittorio Canale, Paweł Żmudzki, Paweł Zajdel, Elżbieta Pękala
The aim of the study was to investigate the metabolism of 4-fluoro-N-(1-{2-[(propan-2-yl)phenoxy]ethyl}-8-azabicyclo[3.2.1]octan-3-yl)-benzenesulfonamide (PZ-1150), a novel 5-HT7 receptor antagonist with antidepressant-like and anxiolytic properties, by the following three ways: in vitro with microsomes; in vitro employing Cunninghamella echinulata, and in silico using MetaSite. Biotransformation of PZ-1150 with microsomes resulted in five metabolites, while transformation with C. echinulata afforded two metabolites...
February 22, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29512227/synthesis-and-characterization-of-four-novel-palladium-ii-and-platinum-ii-complexes-with-1-2-aminoethyl-pyrrolidine-diclofenac-and-mefenamic-acid-in-vitro-effect-of-these-complexes-on-human-serum-paraoxanase1-activity
#14
Esra Dilek, Sema Caglar, Kübra Erdogan, Bülent Caglar, Onur Sahin
In this study, the effects of four novel mononuclear palladium(II) and platinum(II) complexes on the activity of human serum paraoxanase1 were examined. First, four novel mononuclear palladium(II) and platinum(II) complexes were synthesized with a nitrogen donor ligand 1-(2-aminoethyl)pyrrolidine and nonsteroidal anti-inflammatory drugs diclofenac, mefenamic acid. These complexes were characterized by spectroscopic, thermal, and elemental analyses. The crystal structures of complex [Pd(2-amepyr)2 ](dicl)2 1 and [Pd(2-amepyr)2 ](mef)2 3 were determined by X-ray crystallography...
April 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29457867/comparative-toxicity-studies-on-bromochloroacetate-dibromoacetate-and-bromodichloroacetate-in-j774a-1-macrophages-roles-of-superoxide-anion-and-protein-carbonyl-compounds
#15
Ezdihar A Hassoun, Xiaoqun Zeng
The brominated and mixed bromo-chloro-haloacetates, such as dibromoacetate (DBA), bromochloroacetate (BCA), and bromodichloroacetate (BDCA), are by-products of water chlorination and are found at lower levels than the fully chlorinated acetates in the drinking water. The toxicities of the compounds were assessed in J774A.1 cells and were found to induce concentration-dependent increases in cell death and superoxide anion and protein carbonyl compounds production. Compared to the previously tested concentrations of dichoroacetate (DCA) and trichloroacetate (TCA) in the same cell line, the tested haloacetates induced similar effects on cellular viability and superoxide anion production but at DBA and BCA concentrations that were approximately 40-160 times lower than those of DCA and TCA, and at BDCA concentrations that were 4-16 times lower than those of DCA and TCA...
April 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29457851/suppression-of-microrna-144-3p-attenuates-oxygen-glucose-deprivation-reoxygenation-induced-neuronal-injury-by-promoting-brg1-nrf2-are-signaling
#16
Yanru Li, Yongli Zhao, Mingkun Cheng, Yingjie Qiao, Yongtao Wang, Wancheng Xiong, Wei Yue
Accumulating evidence has reported that microRNA-144-3p (miR-144-3p) is highly related to oxidative stress and apoptosis. However, little is known regarding its role in cerebral ischemia/reperfusion-induced neuronal injury. Herein, our results showed that miR-144-3p expression was significantly downregulated in neurons following oxygen-glucose deprivation and reoxygenation (OGD/R) treatment. Overexpression of miR-144-3p markedly reduced cell viability, promoted cell apoptosis, and increased oxidative stress in neurons with OGD/R treatment, whereas downregulation of miR-144-3p protected neurons against OGD/R-induced injury...
April 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29457669/n-acetyl-cysteine-mediated-inhibition-of-spermatogonial-cells-apoptosis-against-malathion-exposure-in-testicular-tissue
#17
Jitender Kumar Bhardwaj, Priyanka Saraf, Priya Kumari, Meenu Mittal, Vijay Kumar
Toxicological studies so far suggest that excessive use of malathion, an organophosphate insecticide, causes serious ill-effects in mammalian reproductive physiology. The present study aims at assessing malathion-induced toxicity in a dose- and time-dependent manner with mitigating effects of N-acetyl-l-cysteine. The testicular germ cell viability was monitored using MTT assay, where NAC, being an antioxidant significantly reduced malathion-induced toxicity by enhancing the frequency of cell viability. The histomorphological analysis showed that NAC successfully diminished several apoptotic features in testicular cells, induced by malathion...
April 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29457667/synthesis-and-discovery-of-potent-carbonic-anhydrase-acetylcholinesterase-butyrylcholinesterase-and-%C3%AE-glycosidase-enzymes-inhibitors-the-novel-n-n-bis-cyanomethylamine-and-alkoxymethylamine-derivatives
#18
Parham Taslimi, Cuneyt Caglayan, Vagif Farzaliyev, Oruj Nabiyev, Afsun Sujayev, Fikret Turkan, Ruya Kaya, İlhami Gulçin
During this investigation, N,N'-bis-azidomethylamines, N,N'-bis-cyanomethylamine, new alkoxymethylamine and chiral derivatives, which are considered to be a new generation of multifunctional compounds, were synthesized, functional properties were investigated, and anticholinergic and antidiabetic properties of those compounds were studied through the laboratory tests, and it was approved that they contain physiologically active compounds rather than analogues. Novel N-bis-cyanomethylamine and alkoxymethylamine derivatives were effective inhibitors of the α-glycosidase, cytosolic carbonic anhydrase I and II isoforms, butyrylcholinesterase (BChE), and acetylcholinesterase (AChE) with Ki values in the range of 0...
April 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29469982/prophylactic-administration-of-carnosine-and-melatonin-abates-the-incidence-of-renal-toxicity-induced-by-an-over-dose-of-titanium-dioxide-nanoparticles
#19
Laila Mohamed Fadda, Azza M Mohamed, Hanaa Mahmoud Ali, Hanan Hagar, Manal Aldossari
The alleviative effects of two antioxidants, carnosine (Car) and melatonin (Mel), against titanium dioxide nanoparticles (TiO2 -NPs) toxicity-induced oxidative and inflammatory renal damage were examined in rats. Administration of these antioxidants along with TiO2 -NPs effectively reduced serum urea, uric acid, creatinine, glucose, tumor necrosis factor-α, interleukin-6, C-reactive protein, immunoglobulin G, vascular endothelial growth factor, and nitric oxide, as well as a significant amelioration of the decrease in glutathione levels in renal tissue was observed, compared to those in rats treated with TiO2 -NPs alone...
March 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29457666/the-in-vivo-effects-of-cefazolin-cefuroxime-and-cefoperazon-on-the-carbonic-anhydrase-in-different-rat-tissues
#20
Fikret Türkan, Zübeyir Huyut, Parham Taslimi, İlhami Gülçin
In this paper, the in vivo effects of some antibiotics including cefazolin, cefuroxime, and cefoperazon, on the activity of the carbonic anhydrase enzyme (CA) in heart, brain, eye, liver, and kidney tissues of rats were evaluated. For this purpose, 16 different groups, which each containing six rats (n = 6), were formed (control group, cefazolin groups, cefuroxime groups, and cefoperazon groups). The rats were necropsied 60 min after the intraperitoneal injection of the chemicals into the rats. The CA activities were measured for each tissue using esterase activity methods...
March 2018: Journal of Biochemical and Molecular Toxicology
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