Journal of Toxicological Sciences最新文献

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Development of a non-invasive method for testicular toxicity evaluation using a novel compact magnetic resonance imaging system. 一种使用新型紧凑型磁共振成像系统进行睾丸毒性评估的无创方法的发展。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.57
Satoshi Yokota, Hidenobu Miyaso, Toshinori Hirai, Kousuke Suga, Tomohiko Wakayama, Yuhji Taquahashi, Satoshi Kitajima
{"title":"Development of a non-invasive method for testicular toxicity evaluation using a novel compact magnetic resonance imaging system.","authors":"Satoshi Yokota,&nbsp;Hidenobu Miyaso,&nbsp;Toshinori Hirai,&nbsp;Kousuke Suga,&nbsp;Tomohiko Wakayama,&nbsp;Yuhji Taquahashi,&nbsp;Satoshi Kitajima","doi":"10.2131/jts.48.57","DOIUrl":"https://doi.org/10.2131/jts.48.57","url":null,"abstract":"<p><p>In non-clinical animal studies for drug discovery, histopathological evaluation is the most powerful tool to assess testicular toxicity. However, histological analysis is extremely invasive; many experimental animals are needed to evaluate changes in the pathology and anatomy of the testes over time. As an alternative, small animal magnetic resonance imaging (MRI) offers a non-invasive methodology to examine testicular toxicity without radiation. The present study demonstrated the suitability of a new, ready-to-use compact MRI platform using a high-field permanent magnet to assist with the evaluation of testicular toxicity. To validate the utility of the MRI platform, male mice were treated with busulfan (40 mg/kg, intraperitoneal injection). Twenty-eight days after treatment, both testes in busulfan-treated and control mice (n = 6/group) were non-invasively scanned in situ by MRI at 1 tesla. On a T1-weighted 3D gradient-echo MRI sequences (voxel size: 0.23 × 0.23 × 0.50 mm), the total testicular volume in busulfan-treated mice was significantly smaller than in controls. On T1-weighted images, the signal intensity of the testes was significantly higher in busulfan-treated mice than in controls. The mice were sacrificed, and the testes were isolated for histopathological analysis. The weight of the testes in busulfan-treated mice significantly decreased, similar to the results of the non-invasive analysis. Additionally, periodic acid-Schiff stain-positive effusions were observed in the interstitium of the busulfan-treated mouse testes, potentially explaining T1 shortening due to a high concentration of glycoproteinaceous content. The present data demonstrated a rapid evaluation of testicular toxicity in vivo by compact MRI.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 2","pages":"57-64"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10642896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Retraction: In utero-exposed di(n-butyl) phthalate induce dose dependent, age-related changes of morphology and testosterone-biosynthesis enzymes/associated proteins of Leydig cell mitochondria in rats. 撤回:子宫内暴露的邻苯二甲酸二(正丁酯)会导致大鼠睾丸细胞线粒体的形态和睾酮合成酶/相关蛋白发生与剂量相关、与年龄相关的变化。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.R1
Masaya Motohashi, Michael F Wempe, Tomoko Mutou, Yuya Okayama, Norio Kansaku, Hiroyuki Takahashi, Masahiro Ikegami, Masao Asari, Shin Wakui
{"title":"Retraction: In utero-exposed di(n-butyl) phthalate induce dose dependent, age-related changes of morphology and testosterone-biosynthesis enzymes/associated proteins of Leydig cell mitochondria in rats.","authors":"Masaya Motohashi, Michael F Wempe, Tomoko Mutou, Yuya Okayama, Norio Kansaku, Hiroyuki Takahashi, Masahiro Ikegami, Masao Asari, Shin Wakui","doi":"10.2131/jts.48.R1","DOIUrl":"10.2131/jts.48.R1","url":null,"abstract":"<p><p>Editor's AnnouncementIn utero-exposed di(n-butyl) phthalate induce dose dependent, age-related changes of morphology and testosterone-biosynthesis enzymes/associated proteins of Leydig cell mitochondria in ratsMasaya Motohashi, Michael F. Wempe, Tomoko Mutou, Yuya Okayama, Norio Kansaku, Hiroyuki Takahashi, Masahiro Ikegami, Masao Asari, Shin Wakui(The Journal of Toxicological Sciences, 41, 195-206, 2016) I have retracted the above paper as Editor-in-Chief of The Journal of Toxicological Sciences since I have serious concerns about it, primarily due to inappropriate authorship on a non-negligible scale.When it was brought to my attention that there was inappropriate authorship in this paper, I contacted the co-authors to confirm this point. I found out that the majority of them considered their listing as co-authors to be inappropriate. In addition, the majority agreed to the retraction of this paper.These facts raise concerns about the paper. From the standpoint of maintaining the integrity of the research community, I felt that such a paper should be retracted at once.Accordingly, I sent a summary of my concerns about the paper to the corresponding author, Dr. Shin Wakui. I also had an online interview with him to discuss this matter. I told Dr. Wakui that inappropriate authorship on a non-negligible scale is a serious problem that raises concerns about the paper.I prepared a draft of this Editor's Announcement and sent it to Dr. Wakui for review prior to revision and release. Although he did not agree to the retraction, I have decided to take this action from the standpoint of maintaining the integrity of the research community.I coordinated my response to this issue with Dr. Akira Naganuma, Editor-in-Chief of Fundamental Toxicological Sciences, a sister journal of The Journal of Toxicological Sciences. Toshiyuki Kaji, Ph.D.Editor-in-ChiefThe Journal of Toxicological Sciences.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 6","pages":"R1"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9586775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preclinical in vitro evaluation of immune suppression induced by GYM329, Fc-engineered sweeping antibody. fc工程扫描抗体GYM329诱导免疫抑制的临床前体外评价。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.399
Yoshika Iwata, Hitoshi Katada, Momoko Okuda, Yoshiaki Doi, Tim Jang Ching, Asako Harada, Akira Takeiri, Masaki Honda, Masayuki Mishima
{"title":"Preclinical in vitro evaluation of immune suppression induced by GYM329, Fc-engineered sweeping antibody.","authors":"Yoshika Iwata, Hitoshi Katada, Momoko Okuda, Yoshiaki Doi, Tim Jang Ching, Asako Harada, Akira Takeiri, Masaki Honda, Masayuki Mishima","doi":"10.2131/jts.48.399","DOIUrl":"10.2131/jts.48.399","url":null,"abstract":"<p><p>Fc-engineering is commonly used to improve the therapeutic potency of antibody (Ab) treatments. Because FcγRIIb is the only inhibitory FcγR that contains an immunoreceptor tyrosine-based inhibition motif (ITIM), Fc-engineered Abs with enhanced binding affinity to FcγRIIb might provide immune suppression in clinical contexts. GYM329 is an anti-latent myostatin Fc-engineered Ab with increased affinity to FcγRIIb which is expected to improve muscle strength in patients with muscular disorders. Cross-linking of FcγRIIb by immune complex (IC) results in phosphorylation of ITIM to inhibit immune activation and apoptosis in B cells. We examined whether the IC of Fc-engineered Abs with enhanced binding affinity to FcγRIIb causes phosphorylation of ITIM or B cell apoptosis using GYM329 and its Fc variant Abs in human and cynomolgus-monkey (cyno) immune cells in vitro. IC of GYM329 with enhanced binding affinity to human FcγRIIb (×5) induced neither ITIM phosphorylation nor B cell apoptosis. As for GYM329, FcγRIIb should work as an endocytic receptor of small IC to sweep latent myostatin, so it is preferable that GYM329 induces neither ITIM phosphorylation nor B cell apoptosis to prevent immune suppression. In contrast, IC of myo-HuCy2b, the Ab with enhanced binding affinity to human FcγRIIb (×4), induced ITIM phosphorylation and B cell apoptosis. The result of the present study demonstrated that Fc-engineered Abs with similar binding affinity to FcγRIIb had different effects. Thus, it is important to also investigate FcγR-mediated immune functions other than binding to fully understand the biological effects of Fc-engineered Abs.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 7","pages":"399-409"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10121232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cadmium induces chondroitin sulfate synthase 1 via protein kinase Cα and elongates chondroitin/dermatan sulfate chains in cultured vascular endothelial cells. 镉通过蛋白激酶Cα诱导硫酸软骨素合酶1,延长培养血管内皮细胞的硫酸软骨素/皮肤色素链。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.457
Takato Hara, Shogo Matsuura, Keita Aikawa, Misaki Shirai, Mai Yoshida, Toshiyuki Kaji, Chika Yamamoto
{"title":"Cadmium induces chondroitin sulfate synthase 1 via protein kinase Cα and elongates chondroitin/dermatan sulfate chains in cultured vascular endothelial cells.","authors":"Takato Hara,&nbsp;Shogo Matsuura,&nbsp;Keita Aikawa,&nbsp;Misaki Shirai,&nbsp;Mai Yoshida,&nbsp;Toshiyuki Kaji,&nbsp;Chika Yamamoto","doi":"10.2131/jts.48.457","DOIUrl":"https://doi.org/10.2131/jts.48.457","url":null,"abstract":"<p><p>Cadmium is an environmental pollutant and a risk factor for atherosclerosis. In the atherosclerotic intima, dermatan sulfate chains accelerate accumulation and oxidation of LDL cholesterol. The major type of dermatan sulfate proteoglycan that is synthesized by vascular endothelial cells is biglycan. In the present study, we analyzed the effect of cadmium on the biglycan synthesis using cultured bovine aortic endothelial cells. Cadmium did not induce biglycan mRNA and core protein expression; however, it elongated the chondroitin/dermatan sulfate chains of biglycan. Among elongation enzymes of the chondroitin/dermatan sulfate chain, chondroitin sulfate synthase 1 (CHSY1) mRNA and protein expression were dose- and time-dependently upregulated by cadmium depending on protein kinase Cα. This finding suggests that CHSY1-dependent elongation of chondroitin/dermatan sulfate chains of biglycan may exacerbate cadmium-induced atherosclerosis.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 8","pages":"457-467"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9935352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of salt supplementation in uninephrectomized KK-Ay mice: Examining the potential of a diabetic kidney disease model. 补充盐对未切除肾的KK-Ay小鼠的影响:检测糖尿病肾病模型的潜力。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.597
Ryuhei Sano, Kanjiro Ryu, Tomohiko Sasase, Yuichi Shinozaki, Soon Hui Teoh, Ayane Yamaguchi, Kinuko Uno, Tatsuya Maekawa, Takeshi Ohta, Katsuhiro Miyajima
{"title":"Effects of salt supplementation in uninephrectomized KK-Ay mice: Examining the potential of a diabetic kidney disease model.","authors":"Ryuhei Sano,&nbsp;Kanjiro Ryu,&nbsp;Tomohiko Sasase,&nbsp;Yuichi Shinozaki,&nbsp;Soon Hui Teoh,&nbsp;Ayane Yamaguchi,&nbsp;Kinuko Uno,&nbsp;Tatsuya Maekawa,&nbsp;Takeshi Ohta,&nbsp;Katsuhiro Miyajima","doi":"10.2131/jts.48.597","DOIUrl":"https://doi.org/10.2131/jts.48.597","url":null,"abstract":"<p><p>Diabetic kidney disease (DKD) is the leading cause of end-stage renal disease (ESRD). Although current therapeutic strategies for DKD, including sodium-glucose cotransporter-2 inhibitors and mineralocorticoid receptor antagonists, have shown some degree of efficacy, they have failed to completely halt the progression of DKD to ESRD owing to the complexity of DKD pathogenesis. Elucidating the pathophysiological mechanism of DKD is essential for the development of novel therapeutic strategies. In this study, we investigated the pathophysiological characteristics of uninephrectomized (UNx) KK-Ay mice and examined the effects of salt supplementation on the acceleration of renal injury in these mice. UNx KK-Ay mice exhibited pathophysiological renal abnormalities with glomerular and tubulointerstitial fibrosis. Additionally, salt supplementation exacerbated renal injury, particularly tubular injury. These results suggest that UNx KK-Ay mice are useful models for advanced DKD and that salt exacerbates tubular damage in DKD.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 11","pages":"597-606"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71424744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toxicological applications of human induced pluripotent stem cell-derived hepatocyte-like cells: an updated review. 人诱导多能干细胞衍生的肝细胞样细胞的毒理学应用:最新综述。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.441
Xiugong Gao, Jeffrey J Yourick, Robert L Sprando
{"title":"Toxicological applications of human induced pluripotent stem cell-derived hepatocyte-like cells: an updated review.","authors":"Xiugong Gao,&nbsp;Jeffrey J Yourick,&nbsp;Robert L Sprando","doi":"10.2131/jts.48.441","DOIUrl":"https://doi.org/10.2131/jts.48.441","url":null,"abstract":"<p><p>Variability in supply, paucity of donors and cellular instability under in vitro conditions have limited the application of primary human hepatocytes (PHHs) to hepatotoxicity testing. Therefore, alternative sources have been sought for functional liver cells. Many of the earlier in vitro hepatotoxicity studies were carried out using hepatoma-derived cell lines. These cell lines have overcome some of the limitations of PHHs with regard to phenotypic stability and availability; however, they suffer from their own inherent limitations, such as the lack of drug-metabolizing functionality, which renders them inadequate for situations where toxic metabolite formation of the parent drug occurs. In the last decade we have witnessed a burgeoning interest of the research community in using hepatocyte-like cells (HLCs) derived from human induced pluripotent stem cells (iPSCs) as in vitro hepatotoxicity models. HLCs offer the perspective of a defined and renewable supply of functional hepatocytes; more importantly, HLCs maintain their original donor genotype and afford donor diversity, thus opening new avenues to patient-specific toxicity testing. In this review, we first introduce various in vitro hepatotoxicity models, then focus on HLCs and their application in hepatotoxicity studies, and finally offer some perspectives on future developments of the field.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 8","pages":"441-456"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9935353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CHAC1 exacerbates arsenite cytotoxicity by lowering intracellular glutathione levels. CHAC1通过降低细胞内谷胱甘肽水平加重亚砷酸盐的细胞毒性。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.487
Daigo Sumi, Hiroki Taguchi, Kumiko Takeuchi, Hitomi Fujishiro
{"title":"CHAC1 exacerbates arsenite cytotoxicity by lowering intracellular glutathione levels.","authors":"Daigo Sumi,&nbsp;Hiroki Taguchi,&nbsp;Kumiko Takeuchi,&nbsp;Hitomi Fujishiro","doi":"10.2131/jts.48.487","DOIUrl":"https://doi.org/10.2131/jts.48.487","url":null,"abstract":"<p><p>We here examined whether CHAC1 is implicated in arsenite (As(III))-induced cytotoxicity in HaCaT cells. We found that HaCaT cells in which the intracellular GSH levels were elevated by transfection with CHAC1 siRNA showed decreased sensitivity to As(III) compared to the control cells. Treatment with BSO (an inhibitor of GSH biosynthesis) abolished the decrease in sensitivity to As(III), suggesting that an increase in intracellular GSH levels was involved in the decrease in sensitivity to As(III) due to the decrease in the levels of CHAC1 expression. When we examined the expression of CHAC1 after exposure of HaCaT cells to As(III), the levels of CHAC1 were increased. Since CHAC1 is a proapoptotic factor, we examined appearance of apoptotic cells and cleavage of caspase-3 after exposure to As(III) to determine whether As(III)-induced CHAC1 up-regulation was involved in apoptosis induction. The results showed that induction of apoptosis by As(III) exposure was not detected in CHAC1 siRNA-transfected cells. Together, our findings indicate that CHAC1 is involved in the sensitivity of HaCaT cells to As(III) by regulating the intracellular GSH levels, and in particular, CHAC1 is involved in As(III)-induced apoptosis.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 9","pages":"487-494"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10154167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exposure to bisphenol A or its phenolic analogs during early life induces different types of anxiety-like behaviors after maturity in male mice. 幼年时期暴露于双酚A或其酚类类似物会在成年后诱导不同类型的焦虑样行为。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.211
Takahiro Sasaki, Hirokatsu Saito, Yusuke Furukawa, Takashi Tominaga, Satoshi Kitajima, Jun Kanno, Kentaro Tanemura
{"title":"Exposure to bisphenol A or its phenolic analogs during early life induces different types of anxiety-like behaviors after maturity in male mice.","authors":"Takahiro Sasaki,&nbsp;Hirokatsu Saito,&nbsp;Yusuke Furukawa,&nbsp;Takashi Tominaga,&nbsp;Satoshi Kitajima,&nbsp;Jun Kanno,&nbsp;Kentaro Tanemura","doi":"10.2131/jts.48.211","DOIUrl":"https://doi.org/10.2131/jts.48.211","url":null,"abstract":"<p><p>Products used in daily life contain multiple chemicals capable of inducing endocrine disruption in animals, including humans. One such typical substance is bisphenol A (BPA). BPA has been widely used in epoxy resins and polycarbonate plastics and can exert several adverse effects. Furthermore, given their structural similarity to BPA, phenolic analogs of BPA, i.e., synthetic phenolic antioxidants (SPAs), are considered to exhibit similar toxicity; however, the effects of early SPA exposure on the adult central nervous system remain poorly clarified. In the present study, we aimed to evaluate and compare the neurobehavioral effects of early life exposure to BPA and two selected SPAs, 4,4'-butylidenebis (6-tert-butyl-m-cresol) (BB) and 2,2'-methylenebis (6-tert-butyl-p-cresol) (MB). We exposed mice to low levels of these chemicals through drinking water during prenatal and postnatal periods. Subsequently, we examined the adverse effects of these chemicals on the central nervous system using a mouse behavioral test battery, comprising the open field test, light/dark transition test, elevated plus-maze test, contextual/cued fear conditioning test, and prepulse inhibition test, at 12-13 weeks old. Based on the behavioral analysis, SPAs, like BPA, may cause affective disorders even at low doses, although qualitative differences were noted in anxiety-related behaviors. In conclusion, our findings could be valuable for clarifying the potential adverse developmental risks of SPA exposure in early life.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 4","pages":"211-219"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9294539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of neurotoxicity of anticancer drugs using nematode Caenorhabditis elegans as a model organism. 以秀丽隐杆线虫为模式生物评价抗癌药物的神经毒性。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.311
Yuko Sakaguchi, Marin Mizukami, Yamashiro Hiroka, Kayuko Miyasaka, Kyoko Niwa, Koji Arizono, Nobuhiro Ichikawa
{"title":"Evaluation of neurotoxicity of anticancer drugs using nematode Caenorhabditis elegans as a model organism.","authors":"Yuko Sakaguchi,&nbsp;Marin Mizukami,&nbsp;Yamashiro Hiroka,&nbsp;Kayuko Miyasaka,&nbsp;Kyoko Niwa,&nbsp;Koji Arizono,&nbsp;Nobuhiro Ichikawa","doi":"10.2131/jts.48.311","DOIUrl":"https://doi.org/10.2131/jts.48.311","url":null,"abstract":"<p><p>It is well established that platinum-based drugs, including oxaliplatin (L-OHP) and cisplatin (CDDP), as well as microtubule inhibitors paclitaxel (PTX) and vincristine (VCR), are associated with chemotherapy-induced peripheral neuropathy (CIPN). In this study, we examined and compared the characteristics of neuropathies induced by L-OHP, CDDP, PTX, and VCR to evaluate whether Caenorhabditis elegans (C. elegans) could serve as a model organism for human CIPN. Worms were cultured on nematode growth medium plates, and L1 larvae synchronized by gel filtration were employed. We then performed bioassays and examined motility. In the motility test, exposure was performed for 2, 24, and 48 hr, and time-dependent effects were measured for each exposure time and 24 hr after terminating exposure. Herein, we observed that L-OHP and CDDP exerted concentration-dependent effects above a certain concentration, and PTX and VCR exerted concentration-dependent negative effects in the bioassay. Motility recovered in L-OHP-, PTX-, and VCR-treated worms on terminating exposure. However, CDDP exposure tended to reduce motility even 24 hr after terminating exposure. L-OHP exposure could decrease motility 2 hr after exposure, with a trend toward recovery 24 hr after terminating drug exposure. The findings of the present study revealed that C. elegans could exhibit neuropathy characteristics suggested to be similar to those observed in humans, indicating that this organism could be a suitable model to explore human CIPN.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 6","pages":"311-321"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9565504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Dexmedetomidine protects against Ropivacaine-induced neuronal pyroptosis via the Nrf2/HO-1 pathway. 右美托咪定通过Nrf2/HO-1途径保护罗哌卡因诱导的神经元焦亡。
IF 2 4区 医学
Journal of Toxicological Sciences Pub Date : 2023-01-01 DOI: 10.2131/jts.48.139
Run Wang, Pengfei Liu, Fan Li, Hui Qiao
{"title":"Dexmedetomidine protects against Ropivacaine-induced neuronal pyroptosis via the Nrf2/HO-1 pathway.","authors":"Run Wang,&nbsp;Pengfei Liu,&nbsp;Fan Li,&nbsp;Hui Qiao","doi":"10.2131/jts.48.139","DOIUrl":"https://doi.org/10.2131/jts.48.139","url":null,"abstract":"<p><p>Dexmedetomidine (DEX) has been demonstrated to protect against ropivacaine (Ropi)-induced neuronal damages. This study was conducted to explore the protective role of DEX in Ropi-induced neuronal pyroptosis and provide a strategy to eliminate Ropi-induced neurotoxicity. The impacts of different concentrations of Ropi and DEX on neurotoxicity in SK-N-SH cells were evaluated by cell counting kit-8 assay and lactic dehydrogenase assay kits. Levels of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase 1 (HO-1), NLR family pyrin domain containing 3 (NLRP3), cleaved Caspase-1, cleaved N-terminal gasdermin D, interleukin (IL)-1β, and IL-18 were measured by real-time quantitative PCR, Western blotting, and enzyme linked immunosorbent assay. The Nrf2 level after nuclear/cytoplasmic separation was quantified. SK-N-SH cells were treated with si-Nrf2, Nigericin (NLRP3 activator), and Zinc Protoporphyrin (HO-1 inhibitor) to validate the mechanism. Ropi reduced SK-N-SH cell viability in a concentration- and time-dependent manner. DEX treatment alleviated Ropi-induced toxicity and inhibited pyroptosis. Ropi increased the expression levels of Nrf2 and HO-1, and DEX further enhanced the increases and promoted Nrf2 nuclear translocation. Nrf2/HO-1 inhibition or NLRP3 activation both neutralized the inhibitory role of DEX in Ropi-induced pyroptosis of SK-N-SH cells. Overall, DEX promoted the Nrf2/HO-1 pathway to inhibit NLRP3 expression, thus alleviating Ropi-induced neuronal pyroptosis.</p>","PeriodicalId":17654,"journal":{"name":"Journal of Toxicological Sciences","volume":"48 3","pages":"139-148"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10846639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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