Journals Toxicology and Applied Pharmac...

Toxicology and Applied Pharmacology
Sophia Shi, Jingxia Li, Zhuo Zhang, Huailu Tu, Costa Max
Cr(VI) compounds are confirmed human carcinogens. Maternally expression 3 (MEG3) is the first long non-coding RNA to be identified as a tumor suppressor. MEG3 is frequently downregulated or lost in various primary human tumor tissues and cancer cell lines. Downregulation of MEG3 is associated with cancer initiation, progression, and metastasis. Our previous study has revealed that MEG3 was lost and NEDD9 was upregulated in Cr(VI)-transformed cells compared to those in passage-matched normal BEAS-2B cells. Overexpression of MEG3 reduced NEDD9...
August 22, 2023: Toxicology and Applied Pharmacology
Lindsey St Mary, Lisa Truong, Andrew A Bieberich, Raymond O Fatig, Bartek Rajwa, Robyn L Tanguay
Modern toxicology's throughput has dramatically increased due to alternative models, laboratory automation, and machine learning. This has enabled comparative studies across species and assays to prioritize chemical hazard potential and to understand how different model systems might complement one another. However, such comparative studies of high-throughput data are still in their infancy, with more groundwork needed to firmly establish the approach. Therefore, this study aimed to compare the bioactivity of the NIEHS Division of Translational Toxicology's (DTT) 87-compound developmental neurotoxicant (DNT) library in zebrafish and an in vitro high-throughput cell culture system...
August 19, 2023: Toxicology and Applied Pharmacology
Ching-Hui Loh, Wei-Wen Kuo, Shinn-Zong Lin, Cheng-Yen Shih, Pi-Yu Lin, Jiro Hasegawa Situmorang, Chih-Yang Huang
No abstract text is available yet for this article.
August 18, 2023: Toxicology and Applied Pharmacology
Isra Ishtiaq, Ahmad Zeb, Haroon Bashah, Abdullah Alattar, Reem Alshaman, Phil Ok Koh, Najeeb Ur Rehman, Fawad Ali Shah, Yusuf Althobati
Myocardial infarction results in an increased inflammatory and oxidative stress response in the heart, and reducing inflammation and oxidative stress after MI may offer protective effects to the heart. In the present study, we examined the cardioprotective effects of ferulic acid (FA) and ferulic acid nanostructured solid lipid nanoparticles (FA-SLNs) in an isoproterenol (ISO) induced MI model. Male Sprague Dawley rats were divided into five experimental groups to compare the effects of FA and FA-SLNs. The findings revealed that ISO led to extensive cardiomyopathy, characterized by increased infarction area, edema formation, pressure load, and energy deprivation...
August 17, 2023: Toxicology and Applied Pharmacology
Haonan Cui, Wang Yang, Shijun He, Zili Chai, Lihong Wang, Guowei Zhang, Peng Zou, Lei Sun, Huan Yang, Qing Chen, Jinyi Liu, Jia Cao, Xi Ling, Lin Ao
Telomere and mitochondria may be the targets of Benzo[a]pyrene (BaP) -induced male reproductive damage, and further elucidation of the toxic molecular mechanisms is necessary. In this study, we used in vivo and in vitro exposure models to explore the molecular mechanisms of TERT regulation in BaP-induced telomere and mitochondrial damage in spermatocytes. The results showed that the treatment of benzo[a]pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE), the active metabolite of BaP, caused telomere dysfunction in mouse spermatocyte-derived GC-2 cells, resulting in S-phase arrest and increased senescent secretory phenotype (SASP)...
August 12, 2023: Toxicology and Applied Pharmacology
Fu-Chang Jin, Jing-Jing Chen, Qiu-Xian Xu, Ming-Hui Zhou, Yi Lin, Qi-Wei Zhang, Chang-Chun Zhang, Zhen-Gang Zhang
Hepatic fibrosis is the pathological repair response of the liver to chronic injury; hepatic stellate cell (HSC) activation is the central link in the pathogenesis of hepatic fibrosis. Previously, we showed that kinetin, a plant cytokinin hormone, has a protective effect on CCl4 -induced liver injury in mice. However, the role of kinetin in liver fibrosis remains unclear. We aimed to study these protective effects and to determine the mechanisms by which kinetin mediates HSC activation and apoptosis. For this purpose, the human HSC line LX-2 was treated with 10 ng/mL transforming growth factor-β1 (TGF-β1) for 24 h to stimulate activation...
August 12, 2023: Toxicology and Applied Pharmacology
Jakub Havlasek, Jiri Vrba, Martina Zatloukalova, Barbora Papouskova, Martin Modriansky, Jan Storch, Jan Vacek
This study examined the biotransformation of phytocannabinoids in human hepatocytes. The susceptibility of the tested compounds to transformations in hepatocytes exhibited the following hierarchy: cannabinol (CBN) > cannabigerol (CBG) > cannabichromene (CBC) > cannabidiol (CBD). Biotransformation included hydroxylation, oxidation to a carboxylic acid, dehydrogenation, hydrogenation, dehydration, loss/shortening of alkyl, glucuronidation and sulfation. CBN was primarily metabolized by oxidation of a methyl to a carboxylic acid group, while CBD, CBG and CBC were preferentially metabolized by direct glucuronidation...
August 11, 2023: Toxicology and Applied Pharmacology
Ling-Jing Yuan, Xiang-Yu Li, Jin-Huan Ni, Jing Wang, Xiao-Yu Xu, Jian-Chao Luo, Qi Zhou, Guo-Xin Hu, Jian-Ping Cai, Jian-Chang Qian
AIM: Ibuprofen is the most commonly used analgesic. CYP polymorphisms are mainly responsible for the differences in drug metabolism among individuals. Variations in the ability of populations to metabolize ibuprofen can lead to drug exposure events. The aim of this study was to evaluate the effects of CYP2C19 and CYP3A4 polymorphisms on ibuprofen metabolism in a Chinese population. METHODS: First, 31 CYP2C19 and 12 CYP3A4 microsomal enzymes were identified using an insect expression system...
August 11, 2023: Toxicology and Applied Pharmacology
Zohreh Rezaei, Kazem Dastjerdi, Abolghasem Allahyari, Soodabeh ShahidSales, Sahar Talebian, Amirhosein Maharati, Alireza Zangooie, Amir Sadra Zangouei, Farzad Sadri, Saman Sargazi
Recently, miRNAs have been regarded as potential candidates for mediating therapeutic functions by targeting genes related to drug response. In this study, we suggested that plasma miRNAs may be correlated with response to trastuzumab in HER2-positive breast cancer patients. To determine whether miR-195, miR-23b-3p, miR-1246, and miR-34c-3p are involved in trastuzumab resistance, we screened their expressions in the BT-474 cell line, which was followed by plasma analysis from 20 trastuzumab-resistant HER2-positive breast cancer patients and 20 nonresistance subjects...
August 7, 2023: Toxicology and Applied Pharmacology
Y Ali Daoud, C Tebby, R Beaudouin, C Brochot
Epidemiological studies have shown associations between prenatal exposure to lead (Pb) and neurodevelopmental effects in young children. Prenatal exposure is generally characterized by measuring the concentration in the umbilical cord at delivery or in the maternal blood during pregnancy. To assess internal Pb exposure during prenatal life, we developed a pregnancy physiologically based pharmacokinetic (p-PBPK) model that to simulates Pb levels in blood and target tissues in the fetus, especially during critical periods for brain development...
August 5, 2023: Toxicology and Applied Pharmacology
Zhiwei Wang, Feihong Chen, Yuanjiang Wang, Shaohua Gou
As highly expressed in several human cancers, Casein kinase 2 (CK2) is involved in chemotherapy-induced resistance. As a new potent CK2 inhibitor, DN701 is used to overcome chemoresistance through its synergistic antitumor effect with 5-fluorouracil (5-FU). Translesion DNA synthesis (TLS) has drawn our attention because it is associated with the development of chemo-resistance and tumor recurrence. The in vitro biological properties of 5-FU-resistant colon cancer cells revealed that DN701 combined with 5-FU could overcome chemo-resistance via blocking CK2-mediated aryl hydrocarbon receptor (AhR) and TLS-induced DNA damage repair (DDR)...
August 3, 2023: Toxicology and Applied Pharmacology
Tessa Höper, Isabel Karkossa, Verónica I Dumit, Martin von Bergen, Kristin Schubert, Andrea Haase
Allergic contact dermatitis (ACD) is the predominant form of immunotoxicity in humans. The sensitizing potential of chemicals can be assessed in vitro. However, a better mechanistic understanding could improve the current OECD validated test battery. The aim of this study was to get insights into toxicity mechanisms of four contact allergens, p-benzoquinone (BQ), 2,4-dinitrochlorobenzene (DNCB), p-nitrobenzyl bromide (NBB) and NiSO4 , by analyzing differential proteome alterations in THP-1 cells using two common proteomics workflows, stable isotope labeling by amino acids in cell culture (SILAC) and label-free quantification (LFQ)...
August 2, 2023: Toxicology and Applied Pharmacology
Ariane Zamoner, Maria L Pereira, Marco G Alves
No abstract text is available yet for this article.
July 31, 2023: Toxicology and Applied Pharmacology
Yalan Cui, Xuejun Chen, Jingjing Shi, Qian Jin, Ruihua Zhang, Tong Shi, Chen Wang, Liqin Li
Pre-administration of huperzine A (Hup A) was validated to prevent poisoning from exposure to nerve agents (NAs) by reversibly inhibiting acetylcholinesterase (AChE). However, like the currently commonly used reversible inhibitors, Hup A has a short half-life and is unable to produce a long-term preventative effect. To extend the protective time of Hup A against NAs, 42 derivatives with a CN bond were designed based on the structure of Hup A in this study. All designed derivatives showed good binding capability with AChE via molecular docking...
July 28, 2023: Toxicology and Applied Pharmacology
Joo-Il Kim, Mi-Young Park, Euna Kwon, Hyoung-Jin Kang, Byeong-Cheol Kang
CD19 Chimeric antigen receptor T (CAR-T) cell therapy has shown a promising response rate for relapsed/refractory B-cell malignancies. However, serious side effects such as cytokine release syndrome and immune effector cell-associated neurotoxicity syndrome arose in early case reports. Though several preclinical and clinical studies of CAR-T cell therapy have been reported, there is a lack of toxicological assessments. This study was carried out as a preclinical assessment of CD19 CAR-T cell therapy, including the anti-leukemic efficacy, kinetics in peripheral blood, and 4-week single-dose toxicity evaluation in leukemia xenograft mice...
July 26, 2023: Toxicology and Applied Pharmacology
Marie-Christin Jäger, Jacek Kędzierski, Victoria Gell, Tim Wey, Jakub Kollár, Denise V Winter, Daniela Schuster, Martin Smieško, Alex Odermatt
Several drugs were found after their market approval to unexpectedly inhibit adrenal 11β-hydroxylase (CYP11B1)-dependent cortisol synthesis. Known side-effects of CYP11B1 inhibition include hypertension and hypokalemia, due to a feedback activation of adrenal steroidogenesis, leading to supraphysiological concentrations of 11-deoxycortisol and 11-deoxycorticosterone that can activate the mineralocorticoid receptor. This results in potassium excretion and sodium and water retention, ultimately causing hypertension...
July 26, 2023: Toxicology and Applied Pharmacology
Ayami Sato, Akihito Ishigami
AIMS: Smoking causes DNA methylation (DNAm) alterations that lead to lung cancer development. Although the use of heated tobacco products (HTPs) has recently increased, their impact on health remains unclear. This study aimed to evaluate the effects of HTPs on DNAm and gene transcription in human lung epithelial cells in vitro. MAIN METHODS: Human lung adenocarcinoma (A549) cells with type II alveolar epithelial characteristics were treated with aerosol extracts of two HTPs or a smoke extract of combustible reference cigarette (RC)...
July 25, 2023: Toxicology and Applied Pharmacology
Danielle Kozlosky, Alexander Lu, Cathleen Doherty, Brian Buckley, Michael J Goedken, Richard K Miller, Emily S Barrett, Lauren M Aleksunes
In utero exposure to the toxic metal cadmium (Cd) alters fetoplacental growth in rodents and has been inversely associated with birth weight and infant size in some birth cohorts. Moreover, studies suggest that Cd may have differential effects on growth and development according to offspring sex. The purpose of the current study was to evaluate changes in male and female fetoplacental development following a single injection of saline (5 ml/kg ip) or cadmium chloride (CdCl2 , 2.5, 5 mg/kg, ip) on gestational day (GD) 9...
July 22, 2023: Toxicology and Applied Pharmacology
Huai-Rong Xiang, Yun Li, Xuan Cheng, Bei He, Hua-Min Li, Qi-Zhi Zhang, Bin Wang, Wen-Xing Peng
To explore the potential value of serum glutamate dehydrogenase (GLDH) combined with inflammatory cytokines as diagnostic biomarkers for anti-tuberculosis drug -induced liver injury (ATB-DILI). We collected the residual serum from the patients who met the criteria after liver function tests. We have examined these parameters including GLDH which were determined by enzyme-linked immunosorbent assay and cytokines which were determined by cytokine combination detection kit. Multivariate logistics stepwise forward regression was applied to establish regression models...
July 22, 2023: Toxicology and Applied Pharmacology
Paweł Kozyra, Grzegorz Adamczuk, Zbigniew Karczmarzyk, Joanna Matysiak, Beata Podkościelna, Ewelina Humeniuk, Waldemar Wysocki, Agnieszka Korga-Plewko, Bogusław Senczyna, Monika Pitucha
Numerous epidemiological studies report an increased risk of developing prostate cancer in patients with melanoma and an increased risk of developing melanoma in patients with prostate cancer. Based on our previous studies demonstrating the high anticancer activity of thiosemicarbazides with a phenoxy moiety, we designed nineteen phenoxyacetylthiosemicarbazide derivatives and four of them acting as potential dual-ligands for both cancers. All of the compounds were characterized by their melting points and 1 H, 13 C NMR and IR spectra...
July 21, 2023: Toxicology and Applied Pharmacology
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