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Journal of Biochemical and Molecular Toxicology

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https://www.readbyqxmd.com/read/28815865/bone-marrow-and-adipose-mesenchymal-stem-cells-attenuate-cardiac-fibrosis-induced-by-methotrexate-in-rats
#1
Ebtehal Mohammad Fikry, Wedad A Hassan, Amany M Gad
Mesenchymal stem cells (MSCs) are an ideal adult stem cell with capacity for self-renewal and differentiation with an extensive tissue distribution. The present study evaluates the therapeutic effects of bone marrow mesenchymal stem cells (BM-MSCs) or adipose-derived mesenchymal stem cells (AD-MSCs) against the development of methotrexate (MTX)-induced cardiac fibrosis versus dexamethasone (DEX). Rats were allocated into five groups; group 1, received normal saline orally; group 2, received MTX (14 mg/kg/week for 2 weeks); groups 3 and 4, treated once with 2 × 10(6) cells of MTX + BM-MSCs and MTX + AD-MSCs, respectively; and group 5, MTX + DEX (0...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28815806/evaluation-in-zebrafish-model-of-the-toxicity-of-rhodamine-b-conjugated-crotamine-a-peptide-potentially-useful-for-diagnostics-and-therapeutics
#2
Judy Yuet-Wa Chan, Hefeng Zhou, Yiu Wa Kwan, Shun Wan Chan, Gandhi Radis-Baptista, Simon Ming-Yuen Lee
Crotamine is defensin-like cationic peptide from rattlesnake venom that possesses anticancer, antimicrobial, and antifungal properties. Despite these promising biological activities, toxicity is a major concern associated with the development of venom-derived peptides as therapeutic agents. In the present study, we used zebrafish as a system model to evaluate the toxicity of rhodamine B-conjugated (RhoB) crotamine derivative. The lethal toxic concentration of RhoB-crotamine was as low as 4 μM, which effectively kill zebrafish larvae in less than 10 min...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28815802/prophylactic-effects-of-ellagic-acid-and-rosmarinic-acid-on-doxorubicin-induced-neurotoxicity-in-rats
#3
Hanan A Rizk, Marwa A Masoud, Omar W Maher
Doxorubicin (DOX) is a chemotherapeutic agent widely used in human malignancies. Its long-term use cause neurobiological side effects. The aim of the present study was to investigate the prophylactic effect exerted by daily administration of ellagic acid (EA) and rosmarinic acid (RA) on DOX-induced neurotoxicity in rats. Our data showed that DOX-induced significant elevation of brain malondialdehyde, tumor necrosis factor-alpha (TNF-α), inducible nitric oxide synthase (iNOS), caspase-3, and cholinesterase associated with significant reduction in reduced glutathione, monoamines namely serotonin, dopamine, as well as norepinephrine...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28800181/synephrine-and-phenylephrine-act-as-%C3%AE-amylase-%C3%AE-glycosidase-acetylcholinesterase-butyrylcholinesterase-and-carbonic-anhydrase-enzymes-inhibitors
#4
Parham Taslimi, Hülya Akıncıoglu, İlhami Gülçin
In this paper, synephrine and phenylephrine compounds showed excellent inhibitory effects against human carbonic anhydrase (hCA) isoforms I and II, α-amylase, α-glycosidase, acetylcholinesterase (AChE), and butyrylcholinesterase (BChE). Synephrine and phenylephrine had Ki values of 199.02 ± 16.01 and 65.01 ± 5.00 μM against hCA I and 336.02 ± 74.01 and 92.04  ±  18.03 μM against hCA II, respectively. On the other hand, their Ki values were found to be 169.10  ±  80.03 and 88.03  ±  5...
August 11, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28800174/curcumin-ameliorates-diclofenac-sodium-induced-nephrotoxicity-in-male-albino-rats
#5
Ahmady Y Ahmed, Amany M Gad, Ola M Abd El-Raouf
Exposure to drugs often results in toxicity in the kidney which represents the major control system maintaining homeostasis of the body and thus is especially susceptible to xenobiotics. Nephrotoxicity is a life-threatening side-effect of nonsteroidal anti-inflammatory drugs (NSAIDs). Diclofenac is one of the most frequently prescribed NSAIDs and have been reported to cause multiple organs damage. Curcumin (CUR) exhibits nephroprotective properties. Therefore, rats were divided into four groups; rats of groups 3 and 4 received diclofenac (100 mg/kg, i...
August 11, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28800171/antioxidant-protection-by-%C3%AE-selenoamines-against-thioacetamide-induced-oxidative-stress-and-hepatotoxicity-in-mice
#6
Sílvio Terra Stefanello, Diane Duarte Hartmann, Guilherme Pires Amaral, Aline Alves Courtes, Martim T B Leite, Thayanara Cruz da Silva, Débora Farina Gonçalves, Micaela B Souza, Pâmela Carvalho da Rosa, Luciano Dornelles, Félix Alexandre Antunes Soares
Thioacetamide (TAA) is a hepatotoxin that rapidly triggers the necrotic process and oxidative stress in the liver. Nevertheless, organic selenium compounds, such as β-selenoamines, can be used as pharmacological agents to diminish the oxidative damage. Thus, the aim of this study was to investigate the protective effect of the antioxidant β-selenoamines on TAA-induced oxidative stress in mice. Here, we observed that a single intraperitoneal injection of TAA (200 mg/kg) dramatically elevated some parameters of oxidative stress, such as lipid peroxidation and reactive oxygen species (ROS) production, as well as depleted cellular antioxidant defenses...
August 11, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28768059/-epicatechin-rescues-the-as2-o3-induced-herg-k-channel-deficiency-possibly-through-upregulating-transcription-factor-sp1-expression
#7
Zengxiang Dong, Yuanqi Shi, Lifang Feng, Zhaoqian Shen, Li Fang, Sijia Zheng, Xin Hai, Baoxin Li
(-)-Epicatechin (EPI) has beneficial effects on the cardiovascular disease. The human ether-a-go-go-related gene (HERG) potassium channel is crucial for repolarization of cardiac action potential. Dysfunction of the HERG channel can cause long QT syndrome type 2 (LQT2). Arsenic trioxide (As2 O3 ) has shown efficacy in the treatment of acute promyelocytic leukemia. However, As2 O3 can induce the deficiency of HERG channel and cause LQT2. In this study, we examined whether EPI could rescue the As2 O3 -induced HERG channel deficiency...
August 2, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28759713/some-metals-inhibit-the-glutathione-s-transferase-from-van-lake-fish-gills
#8
M Serhat Özaslan, Yeliz Demir, O Irfan Küfrevioğlu, Mehmet Çiftci
Glutathione S-transferases (GSTs) are the superfamily of multifunctional detoxification isoenzymes and play important role cellular signaling. The present article focuses on the role of Cd(2+) , Cu(2+) , Zn(2+) , and Ag(+) in vitro inhibition of GST. For this purpose, GST was purified from Van Lake fish (Chalcalburnus tarichii Pallas) gills with 110.664 EU mg(-1) specific activity and 79.6% yield using GSH-agarose affinity chromatographic method. The metal ions were tested at various concentrations on in vitro GST activity...
July 31, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28759707/relevance-of-cystatin-c-n-acetylglucosaminidase-and-interleukin-18-with-the-diagnosis-of-acute-kidney-injury-induced-by-cadmium-in-rats
#9
Ola Sayed Mohamed Ali, Shereen Saeid Elshaer, Hend Mohamed Anwar, Mamdouh Salah El-Din Zohni
The diagnosis of acute kidney injury (AKI) is frequently established on modifications in serum creatinine (SCr). The discriminative and prognostic aptitudes of serum cystatin-C as well as N-acetylglucosaminidase (NAG) and Interleukin-18 (IL-18) were inspected for the estimation of AKI. In this study twelve rats were alienated into two groups: control group received saline, second group received cadmium chloride at a dose (2.4 mg Cd/kg/day, i.p) for 30 days. Blood urea nitrogen (BUN), SCr, and IL-18 serum level were measured in addition to serum and tissue content of cystatin-C and NAG...
July 31, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28759702/protective-effect-of-proanthocyanidins-against-doxorubicin-induced-nephrotoxicity-in-rats
#10
El-Sayed M El-Sayed, Ahmed M Mansour, Waleed S El-Sawy
Doxorubicin (DOX) exerts toxic effects in several organs particularly kidney. The present study aimed to assess the protective effect of proanthocyanidins (PAs) against DOX-induced nephrotoxicity in rats. A single dose of DOX (7.5 mg/kg, i.v.) significantly increased kidney weight, kidney/body weight ratio, serum urea, creatinine, tumor necrosis factor alpha levels, and kidney contents of malondialdehyde, nitric oxide, cyclooxygenase-2, and caspase-3 activity with significant reduction in final body weight, serum albumin, kidney contents of reduced glutathione (GSH), and superoxide dismutase activity as compared with control group...
July 31, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28759163/new-insights-into-the-catalytic-mechanism-of-human-glycine-n-acyltransferase
#11
Rencia van der Sluis, Vida Ungerer, Carla Nortje, Alberdina A van Dijk, Elardus Erasmus
Even though the glycine conjugation pathway was one of the first metabolic pathways to be discovered, this pathway remains very poorly characterized. The bi-substrate kinetic parameters of a recombinant human glycine N-acyltransferase (GLYAT, E.C. 2.3.1.13) were determined using the traditional colorimetric method and a newly developed HPLC-ESI-MS/MS method. Previous studies analyzing the kinetic parameters of GLYAT, indicated a random Bi-Bi and/or ping-pong mechanism. In this study, the hippuric acid concentrations produced by the GLYAT enzyme reaction were analyzed using the allosteric sigmoidal enzyme kinetic module...
July 31, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28724199/antidiabetic-potential-in-vitro-inhibition-effects-of-some-natural-phenolic-compounds-on-%C3%AE-glycosidase-and-%C3%AE-amylase-enzymes
#12
Parham Taslimi, İlhami Gulçin
α-Glycosidase is a catalytic enzyme and it destroys the complex carbohydrates into simple absorbable sugar units. The natural phenolic compounds were tested for their antidiabetic properties as α-glycosidase and α-amylase inhibitors. The phenolic compounds investigated in this study have been used as antidiabetic common medicines. This paper aimed to consider their capability to inhibit α-amylase and α-glycosidase, two significant enzymes defined in serum glucose adjustment. These examination recorded impressive inhibition profiles with IC50 values in the range of 137...
July 19, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28724188/bisindole-oxadiazole-hybrids-t3p-%C3%A2-mediated-synthesis-and-appraisal-of-their-apoptotic-antimetastatic-and-computational-bcl-2-binding-potential
#13
Pooja R Kamath, Manu M Joseph, Abdul Ajees Abdul Salam, Sreelekha T Therakathinal, Dhanya Sunil, Subhankar Biswas, Karkala Sreedhara Ranganath Pai
In the pursuit of novel anticancer leads, new bisindole-oxadiazoles were synthesized using propyl phosphonic anhydride as a mild and efficient reagent. The molecule, 3-[5-(1H-indol-3-ylmethyl)-1,3,4-oxadiazol-2-yl]-1H-indole (3a) exhibited selective cytotoxicity to MCF-7 cells with a cell cycle arrest in the G1 phase. The mechanism of cytotoxicity of 3a involved caspase-2-dependent apoptotic pathway with characteristic apoptotic morphological alterations as observed in acridine orange/ethidium bromide and Hoechst staining...
July 19, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28714536/the-evaluation-of-acute-toxicity-antimicrobial-activity-of-1-phenyl-5-p-tolyl-1h-1-2-3-triazole-and-binding-to-human-serum-albumin
#14
Hong-Ye Duan, Jian-Ling Li, Lu-Yong Wu, Huo-Ming Shu, Yu-Xue Chen, Guo-Hua Ding, Run-Cong Dong, Hong-Zong Si, Xia Zhong, Wen-Ying He
1-Phenyl-5-p-tolyl-1H-1, 2, 3-triazole (PPTA) was a synthesized compound. The result of acute toxicities to mice of PPTA by intragastric administration indicated that PPTA did not produce any significant acute toxic effect on Kunming strain mice. It exhibited the various potent inhibitory activities against two kinds of bananas pathogenic bacteria, black sigatoka and freckle, when compared with that of control drugs and the inhibitory rates were up to 64.14% and 43.46%, respectively, with the same concentration of 7...
July 17, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28700109/biological-responses-in-balb-c-mice-after-long-term-parenteral-administration-of-the-light-subunit-of-mushroom-tyrosinase
#15
Wangsa T Ismaya, Alida Efthyani, Raymond R Tjandrawinata, Heni Rachmawati
Light subunit of mushroom tyrosinase (LSMT) is a protein of unknown function from mushroom Agaricus bisporus that has been demonstrated to permeate through rat intestine ex vivo. Thus, it can be absorbed in the intestine, thereby holding a promise as a drug carrier for oral administration, similar to HA-33 protein from botulinum, one of the closest structural homologs of LSMT. However, the safety of LSMT should be ensured prior to its use. Here, we described biological response of LSMT upon weekly intraperitoneal administration of 50 μg/day to the Balb/c mice for 12 weeks...
July 12, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28683192/evaluation-of-the-possible-nephroprotective-effects-of-vitamin-e-and-rosuvastatin-in-amikacin-induced-renal-injury-in-rats
#16
Ahmed Selim, Marwa M Khalaf, Amany M Gad, Ola M Abd El-Raouf
Amikacin (AMIK) is an aminoglycoside antibiotic that possesses considerable nephrotoxic adverse effects. This study examined the protective effects of vitamin E (VIT. E) or rosuvastatin (ROSU) against AMIK-induced nephrotoxicity. For this purpose, eight groups of rats were used. Two control groups received saline and vehicle, AMIK group (1.2 g/kg, i.p.), VIT. E group (1000 mg/kg; p.o.), ROSU group (10 mg/kg; p.o.), AMIK + VIT. E group, AMIK + ROSU group, and combination group. The results showed that AMIK significantly increased serum levels of urea and creatinine...
July 6, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28682524/restorative-effects-of-chrysin-pretreatment-on-oxidant-antioxidant-status-inflammatory-cytokine-production-and-apoptotic-and-autophagic-markers-in-acute-paracetamol-induced-hepatotoxicity-in-rats-an-experimental-and-biochemical-study
#17
Eyup Eldutar, Fatih Mehmet Kandemir, Sefa Kucukler, Cuneyt Caglayan
Paracetamol (PC) is a widely used analgesic and antipyretic drug, but it leads to acute hepatotoxicity at high doses intakes. This study was aimed to investigate the effects of Chrysin (CR) on hepatotoxicity constituted at high doses of PC in rats. Rats were subjected to oral pretreatment of CR (25 and 50 mg/kg b.w.) via feeding needle for 6 days against hepatotoxicity induced by a single dose of PC (500 mg/kg b.w.) administered orally via feeding needles. Although PC increases lipid peroxidation and liver enzyme activities, it has led to reduction of antioxidant enzyme activities...
July 6, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28675767/sirtuin7-is-involved-in-protecting-neurons-against-oxygen-glucose-deprivation-and-reoxygenation-induced-injury-through-regulation-of-the-p53-signaling-pathway
#18
Jianrui Lv, Junbin Tian, Guoxi Zheng, Jing Zhao
Sirtuin7 (SIRT7) is known to regulate apoptosis and stress responses. So far, very little is known about the role of SIRT7 in cerebral ischemia/reperfusion injury. In this study, we aimed to investigate the potential role of SIRT7 in regulating oxygen-glucose deprivation and reoxygenation (OGD/R)-induced injury in neurons. We found a significant increase of SIRT7 expression in neurons in response to OGD/R treatment. Knockdown of SIRT7 aggravated OGD/R-induced injury. Knockdown of SIRT7 augmented the levels of total and acetylated p53 protein...
July 4, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28665548/effect-of-astaxanthin-and-aluminum-chloride-on-erythrocyte-g6pd-and-6pgd-enzyme-activities-in-vivo-and-on-erythrocyte-g6pd-in-vitro-in-rats
#19
Yusuf Temel, Aydın Şükrü Bengü, Hurrem Turan Akkoyun, Mahire Akkoyun, Mehmet Ciftci
In this study, we investigated the effect of astaxanthin (Ast) and aluminum (Al) on the erythrocyte glucose-6-phosphate dehydrogenase (G6PD) and 6-phosphogluconate dehydrogenase (6PGD) enzymes activities in vivo and on G6PD enzyme in vitro in rats. For in vitro studies, G6PD enzyme was purified from rat erythrocyte by using 2',5'-ADP-Sepharose 4B affinity gel. The effects of Ast and Al(3+) ion were investigated on the purified enzyme. It was determined that Ast increased the enzyme activity, whereas Al(3+) inhibited the enzyme activity noncompetitively (IC50 values; 0...
June 30, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28665493/assessment-of-the-inhibitory-effects-and-molecular-docking-of-some-sulfonamides-on-human-serum-paraoxonase-1
#20
Zuhal Alim, Deryanur Kilic, Zeynep Koksal, Sukru Beydemir, Hasan Ozdemir
Paraoxonase-1 (PON1) is an organophosphate hydrolyzer and antiatherogenic enzyme. Due to the PON1's crucial functions, inhibitors and activators of PON1 must be known for pharmacological applications. In this study, we investigated the in vitro effects of some sulfonamides compounds on human serum PON1 (hPON1). For this aim, we purified the hPON1 from human serum with high specific activity by using simple chromatographic methods, and after the purification processes, we investigated in vitro interactions between the enzyme and some sulfonamides (2-amino-5-methyl-1,3-benzenedisulfonamide, 2-chloro-4-sülfamoilaniline, 4-amino-3-methylbenzenesulfanilamide, sulfisoxazole, sulfisomidine, and 5-amino-2-methylbenzenesulfonamide)...
June 30, 2017: Journal of Biochemical and Molecular Toxicology
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