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Alleviate oxidative stress in diabetic retinopathy: antioxidant therapeutic strategies. 减轻糖尿病视网膜病变的氧化应激:抗氧化治疗策略。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-12-01 Epub Date: 2023-12-02 DOI: 10.1080/13510002.2023.2272386
Jie Gao, Liming Tao, Zhengxuan Jiang

Objectives: This review outlines the function of oxidative stress in DR and discusses therapeutic strategies to treat DR with antioxidants.

Methods: Published papers on oxidative stress in DR and therapeutic strategies to treat DR with antioxidants were collected and reviewed via database searching on PubMed.

Results: The abnormal development of DR is a complicated process. The pathogenesis of DR has been reported to involve oxidative stress, despite the fact that the mechanisms underlying this are still not fully understood. Excessive reactive oxygen species (ROS) accumulation can damage retina, eventually leading to DR. Increasing evidence have demonstrated that antioxidant therapy can alleviate the degeneration of retinal capillaries in DR.

Conclusion: Oxidative stress can play an important contributor in the pathogenesis of DR. Furthermore, animal experiments have shown that antioxidants are a beneficial therapy for treating DR, but more clinical trial data is needed.

目的:本文综述了氧化应激在DR中的作用,并讨论了抗氧化剂治疗DR的治疗策略。方法:通过PubMed数据库检索,收集已发表的DR氧化应激及抗氧化剂治疗DR的相关文献。结果:DR的异常发展是一个复杂的过程。据报道,DR的发病机制与氧化应激有关,尽管其机制尚不完全清楚。越来越多的证据表明,抗氧化治疗可以减轻DR视网膜毛细血管的变性。结论:氧化应激在DR的发病机制中起重要作用。动物实验表明抗氧化剂是治疗DR的有益药物,但还需要更多的临床试验数据。
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引用次数: 0
L-methionine protects against nephrotoxicity induced by methotrexate through modulation of redox status and inflammation. L-甲硫氨酸通过调节氧化还原状态和炎症来预防甲氨蝶呤诱导的肾毒性。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-12-01 Epub Date: 2023-11-06 DOI: 10.1080/13510002.2023.2270886
Wessam M Abdel-Wahab, Nada S Daifalla, Amina E Essawy

Objective: Methotrexate (MTX) is a drug used in the treatment of cancer and autoimmune disorders; however, its clinical use is limited because of serious side effects including renal toxicity. This study aimed to investigate the protective effect of Lmethionine (L-Met) on MTX toxicity in the kidneys of rats.Methods: Thirty male rats were divided equally into five groups: control (saline), Met400 (400 mg/kg L-Met), MTX (20 mg/kg MTX), MTX-Met300 (300 mg/kg L-Met and 20 mg/kg MTX), and MTX-Met400 (400 mg/kg L-Met and 20 mg/kg MTX). Rats were euthanized one day after the last dose administration (day 16) and serum and renal tissue samples were collected. Renal function and injury indices, oxidative stress/antioxidant indices and proinflammatory cytokines were evaluated.Results: The results showed that L-Met could effectively counteract the nephrotoxic effects of MTX, in a dose-related manner, by improving most of the tested parameters. Furthermore, the higher dose of L-Met was able to restore several parameters to normal levels. In addition, investigation of MTX-induced hematological changes revealed a corrective potential of L-Met.Conclusion: L-Met can be an effective adjuvant therapy to modulate renal toxicity associated with MTX because of its antioxidant and antiinflammatory effects.

目的:甲氨蝶呤(MTX)是治疗癌症和自身免疫性疾病的药物;然而,由于包括肾毒性在内的严重副作用,其临床应用受到限制。本研究旨在探讨蛋氨酸(L-Met)对MTX对大鼠肾脏毒性的保护作用。方法:30只雄性大鼠平均分为5组:对照组(生理盐水)、Met400(400mg/kg L-Met)、MTX(20mg/kg MTX)、MTX-Met300(300mg/kg L-Met20 mg/kg MTX)和MTX-Met400(400 mg/kg L-Met20 mg/kgMTX)。在最后一次给药后一天(第16天)对大鼠实施安乐死,并收集血清和肾组织样本。评估肾功能和损伤指数、氧化应激/抗氧化指数和促炎细胞因子。结果:L-Met可以通过改善大多数测试参数,以剂量相关的方式有效对抗MTX的肾毒性作用。此外,更高剂量的L-Met能够将几个参数恢复到正常水平。此外,对MTX诱导的血液学变化的研究揭示了L-Met的纠正潜力。结论:L-Met具有抗氧化和抗炎作用,是调节MTX相关肾毒性的有效辅助疗法。
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引用次数: 0
Sulforaphane attenuates irradiation induced testis injury in mice. 红豆杉可减轻辐照诱发的小鼠睾丸损伤
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-12-01 Epub Date: 2023-12-05 DOI: 10.1080/13510002.2023.2279818
Yuanshuai Ran, Nengliang Duan, Zhixiang Gao, Yulong Liu, Xiaolong Liu, Boxin Xue

Objective: The testis is vulnerable to ionizing radiation, sexual dysfunction and male infertility are common problems after local radiation or whole-body exposure. Currently, there are no approved drugs for the prevention or treatment of radiation testicular injury. Sulforaphane (SFN) is an indirect antioxidant that induces phase II detoxification enzymes and antioxidant genes. Herein, we investigated the radiation protective effect of SFN on testicular injury in mice and its potential mechanism.

Materials and methods: Mice were randomly divided into blank control group (Ctrl), radiation + no pretreatment group (IR), and radiation + SFN groups (IRS). In the radiation + SFN groups, starting from 72 h before radiation, SFN solution was intraperitoneally injected once a day until they were sacrificed. Mice in the blank control group and the radiation + no pretreatment group were simultaneously injected intraperitoneally with an equal volume of the solvent used to dissolve SFN (PBS with a final concentration of 0.1%DMSO) until they were sacrificed. They were subjected to 6Mev-ray radiation to the lower abdominal testis area (total dose 2Gy). Twenty-four hours after radiation, six mice in each group were randomly sacrificed. Seventy-two hours after radiation, the remaining mice were sacrificed.

Results: The results showed that the harmful effects of ionizing radiation on testes were manifested as damage to histoarchitecture, increased oxidative stress, and apoptosis, and thus impaired male fertility. SFN injections can reverse these symptoms.

Conclusions: The results showed that SFN can improve the damage of mouse testis caused by irradiation. Furthermore, SFN prevents spermatogenesis dysfunction caused by ionizing radiation by activating Nrf2 and its downstream antioxidant gene.

目的:睾丸易受电离辐射,局部或全身照射后出现性功能障碍和男性不育等常见问题。目前,还没有批准用于预防或治疗放射性睾丸损伤的药物。萝卜硫素(sulforaphan, SFN)是一种诱导II期解毒酶和抗氧化基因的间接抗氧化剂。本研究探讨了SFN对小鼠睾丸损伤的辐射保护作用及其可能机制。材料与方法:将小鼠随机分为空白对照组(Ctrl)、辐射+无预处理组(IR)和辐射+ SFN组(IRS)。放疗+ SFN组,从放疗前72 h开始,每天腹腔注射SFN溶液1次,直至死亡。空白对照组和放疗+无预处理组小鼠同时腹腔注射等量的SFN溶解溶剂(终浓度为0.1%DMSO的PBS),直至死亡。下腹部睾丸区接受6mev射线照射(总剂量2Gy)。放射24小时后,每组随机处死6只小鼠。放射72小时后,其余小鼠被处死。结果:电离辐射对睾丸的有害影响表现为组织结构损伤、氧化应激增加、细胞凋亡增加,从而损害男性生育能力。SFN注射可以逆转这些症状。结论:SFN对小鼠睾丸辐照损伤有改善作用。此外,SFN通过激活Nrf2及其下游抗氧化基因来防止电离辐射引起的精子发生功能障碍。
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引用次数: 0
LncRNA Fendrr: involvement in the protective role of nucleolin against H2O2-induced injury in cardiomyocytes. LncRNA-Fendrr:参与核仁素对H2O2诱导的心肌细胞损伤的保护作用。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-12-01 DOI: 10.1080/13510002.2023.2168626
Cheng Chen, Xiaofang Lin, Yuting Tang, Hui Sun, Leijing Yin, Zhengyang Luo, Shuxin Wang, Pengfei Liang, Bimei Jiang

Background: Nucleolin is a multifunctional nucleolar protein with RNA-binding properties. Increased nucleolin expression protects cells from H2O2-induced damage, but the mechanism remains unknown. Long noncoding RNAs (lncRNAs) play crucial roles in cardiovascular diseases. However, the biological functions and underlying mechanisms of lncRNAs in myocardial injury remain unclear.Methods: In a nucleolin-overexpressing cardiac cell line, high-throughput technology was used to identify lncRNAs controlled by nucleolin. Cell counting kit-8 assay was used to determine cell viability, lactate dehydrogenase (LDH) assay to detect cell death, caspase activity assay and propidium iodide staining to confirm cell apoptosis, and RNA immunoprecipitation to examine the interaction between Fendrr and nucleolin.Results: We found that Fendrr expression was significantly downregulated in mouse hearts subjected to myocardial ischemia-reperfusion (MI/R) injury. High Fendrr expression abrogated H2O2-mediated injury in cardiomyocytes as evidenced by increased cell viability and decreased cell apoptosis. Conversely, Fendrr knockdown exacerbated the cardiomyocytes injury. Also, nucleolin overexpression inhibits Fendrr downregulation in H2O2-induced cardiomyocyte injury. Fendrr overexpression significantly reversed the role of the suppression of nucleolin expression in H2O2-induced cardiomyocytes.Conclusion: LncRNA Fendrr is involved in the cardioprotective effect of nucleolin against H2O2-induced injury and may be a potential therapeutic target for oxidative stress-induced myocardial injury.

背景:核苷是一种具有RNA结合特性的多功能核仁蛋白。核仁素表达增加可保护细胞免受H2O2诱导的损伤,但其机制尚不清楚。长链非编码RNA(lncRNA)在心血管疾病中起着至关重要的作用。然而,lncRNA在心肌损伤中的生物学功能和潜在机制尚不清楚。方法:在过表达核仁素的心脏细胞系中,采用高通量技术鉴定由核仁素控制的lncRNA。细胞计数试剂盒-8测定法用于测定细胞活力,乳酸脱氢酶(LDH)测定法用于检测细胞死亡,胱天蛋白酶活性测定法和碘化丙啶染色法用于确认细胞凋亡,RNA免疫沉淀法用于检测芬德尔和核仁素之间的相互作用。结果:我们发现在心肌缺血再灌注(MI/R)损伤的小鼠心脏中,Fendrr的表达显著下调。Fendrr的高表达消除了H2O2介导的心肌细胞损伤,细胞活力增加,细胞凋亡减少。相反,芬德尔的敲除加重了心肌细胞的损伤。此外,在H2O2诱导的心肌细胞损伤中,核仁素过表达抑制Fendrr下调。Fendrr过表达显著逆转了H2O2诱导的心肌细胞中核仁素表达的抑制作用。结论:LncRNA-Fendrr参与了核仁素对H2O2诱导的心肌损伤的保护作用,可能是氧化应激诱导心肌损伤的潜在治疗靶点。
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引用次数: 1
D-limonene (5 (one-methyl-four-[1-methylethenyl]) cyclohexane) diminishes CCl4-induced cardiac toxicity by alleviating oxidative stress, inflammatory and cardiac markers. D-柠檬烯(5(一甲基四-[1-甲基乙烯基])环己烷)通过减轻氧化应激、炎症和心脏标志物来减少CCl4诱导的心脏毒性。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2022-12-01 DOI: 10.1080/13510002.2022.2062947
Rana M AlSaffar, Summya Rashid, Sheikh Bilal Ahmad, Muneeb U Rehman, Ishraq Hussain, Sheikh Parvaiz Ahmad, Majid Ahmad Ganaie

Background: The cardiovascular crisis is advancing rapidly throughout the world. A large number of studies have shown that plant polyphenols affect major mechanisms involved in cardiovascular events through their action on the antioxidant system, signaling, and transcription pathways. D-limonene, a monocyclic monoterpene obtained from citrus fruits, is reported to possess many pharmacological activities.Methods: The experiment was designed to determine the protective effect of D-limonene against cardiac injury induced by CCl4 in Wistar rats. Rats were treated with two doses of D-limonene against cardiac injury induced by CCl4. Serum toxicity markers, cardiac toxicity biomarker enzymes, inflammatory mediators, anti-oxidant armory, lipid peroxidation, lipid profile, and histology were done.Results: CCl4 intoxication resulted in a substantial rise in FFA, TC, TG, PL, LDL, VLDL, and a reduction in HDL, restoring these changes with the administration of D-limonene at a dosage of 200 mg/kg. CCl4 administration also resulted in lipid oxidation and decreased antioxidant activity. At the same time, D-limonene at a dosage of 200 mg/kg body weight inhibited LPO and restored in vivo antioxidant components to normal. CCl4 intoxication also resulted in a significant increase in inflammatory markers like IL-6, TNF-α, high sensitivity Corticotropin Releasing Factor (Hs-CRF), and biomarkers of cardiac toxicity like alanine aminotransferase (ALT), lactate dehydrogenase (LDH), creatine kinase (CK), creatine kinase MB (CKMB), and Troponin I & troponin-t activities. D-limonene reversed all these changes to normal. Histology further confirmed our obtained results.Conclusion: These findings indicate that D-limonene can ameliorate cardiac injury at a 200 mg/kg body weight dosage. Henceforth, D-Limonene intervenes in mediating CCl4 induced toxicity by various signaling pathways.

背景:心血管危机在全球范围内迅速发展。大量研究表明,植物多酚通过对抗氧化系统、信号传导和转录途径的作用,影响心血管事件的主要机制。D-柠檬烯是从柑桔果实中提取的一种单环单萜,具有多种药理活性。方法:本实验旨在测定D-柠檬烯对CCl4所致Wistar大鼠心脏损伤的保护作用。用两种剂量的D-柠檬烯对CCl4诱导的心脏损伤进行治疗。进行血清毒性标志物、心脏毒性生物标志物酶、炎症介质、抗氧化剂库、脂质过氧化、脂质图谱和组织学检查。结果:CCl4中毒导致FFA、TC、TG、PL、LDL、VLDL显著升高,HDL降低,以200mg/kg的剂量给予D-柠檬烯可恢复这些变化。CCl4给药也导致脂质氧化和抗氧化活性降低。同时,D-柠檬烯在200mg/kg体重的剂量下抑制LPO,并使体内抗氧化成分恢复正常。CCl4中毒还导致炎症标志物如IL-6、TNF-α、高敏性皮质酮释放因子(Hs-CRF)以及心脏毒性生物标志物如丙氨酸氨基转移酶(ALT)、乳酸脱氢酶(LDH)、肌酸激酶(CK)、肌酸酶MB(CKMB)和肌钙蛋白I和肌钙蛋白t活性显著增加。D-柠檬烯使所有这些变化恢复正常。组织学进一步证实了我们获得的结果。结论:D-柠檬烯在200mg/kg体重剂量下可改善心脏损伤。自此,D-柠檬烯通过各种信号通路参与介导CCl4诱导的毒性。
{"title":"D-limonene (5 (one-methyl-four-[1-methylethenyl]) cyclohexane) diminishes CCl<sub>4</sub>-induced cardiac toxicity by alleviating oxidative stress, inflammatory and cardiac markers.","authors":"Rana M AlSaffar,&nbsp;Summya Rashid,&nbsp;Sheikh Bilal Ahmad,&nbsp;Muneeb U Rehman,&nbsp;Ishraq Hussain,&nbsp;Sheikh Parvaiz Ahmad,&nbsp;Majid Ahmad Ganaie","doi":"10.1080/13510002.2022.2062947","DOIUrl":"10.1080/13510002.2022.2062947","url":null,"abstract":"<p><p><b>Background:</b> The cardiovascular crisis is advancing rapidly throughout the world. A large number of studies have shown that plant polyphenols affect major mechanisms involved in cardiovascular events through their action on the antioxidant system, signaling, and transcription pathways. D-limonene, a monocyclic monoterpene obtained from citrus fruits, is reported to possess many pharmacological activities.<b>Methods:</b> The experiment was designed to determine the protective effect of D-limonene against cardiac injury induced by CCl<sub>4</sub> in Wistar rats. Rats were treated with two doses of D-limonene against cardiac injury induced by CCl<sub>4</sub>. Serum toxicity markers, cardiac toxicity biomarker enzymes, inflammatory mediators, anti-oxidant armory, lipid peroxidation, lipid profile, and histology were done.<b>Results:</b> CCl<sub>4</sub> intoxication resulted in a substantial rise in FFA, TC, TG, PL, LDL, VLDL, and a reduction in HDL, restoring these changes with the administration of D-limonene at a dosage of 200 mg/kg. CCl<sub>4</sub> administration also resulted in lipid oxidation and decreased antioxidant activity. At the same time, D-limonene at a dosage of 200 mg/kg body weight inhibited LPO and restored in vivo antioxidant components to normal. CC<sub>l</sub><sub>4</sub> intoxication also resulted in a significant increase in inflammatory markers like IL-6, TNF-α, high sensitivity Corticotropin Releasing Factor (Hs-CRF), and biomarkers of cardiac toxicity like alanine aminotransferase (ALT), lactate dehydrogenase (LDH), creatine kinase (CK), creatine kinase MB (CKMB), and Troponin I & troponin-t activities. D-limonene reversed all these changes to normal. Histology further confirmed our obtained results.<b>Conclusion:</b> These findings indicate that D-limonene can ameliorate cardiac injury at a 200 mg/kg body weight dosage. Henceforth, D-Limonene intervenes in mediating CCl<sub>4</sub> induced toxicity by various signaling pathways.</p>","PeriodicalId":21096,"journal":{"name":"Redox Report","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/89/d0/YRER_27_2062947.PMC9037211.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41179810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Chemopreventive and hepatoprotective effects of genistein via inhibition of oxidative stress and the versican/PDGF/PKC signaling pathway in experimentally induced hepatocellular carcinoma in rats by thioacetamide. 染料木黄酮通过抑制氧化应激和versican/PDGF/PKC信号通路在硫代乙酰胺实验诱导的大鼠肝细胞癌中的化学预防和肝保护作用。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2022-12-01 DOI: 10.1080/13510002.2022.2031515
Yousra M El-Far, Ahmed E Khodir, Ziad A Emarah, Mohamed A Ebrahim, Mohammed M H Al-Gayyar

Objective: Genistein is a recognized isoflavone present in soybeans with antioxidant, anti-inflammatory, antiangiogenic and antitumor activities. This study aimed to test ability of genistein in modulating versican/platelet derived growth factor (PDGF) axis in HCC.

Methods: HCC was experimentally induced in male Sprague-Dawley rats then treated with 25 or 75 mg/kg genistein. Antioxidant activities of genistein was assessed by measuring the gene expression of Nrf2 and the hepatic levels of malondialdehyde (MDA), superoxide dismutase (SOD) and reduced glutathione. Expression of versican, PDGF, protein kinase C (PKC) and ERK-1 protein was assessed by Western blotting and immunostaining.

Results: HCC induced an elevation in oxidative stress, PDGF, versican, PKC and ERK protein expression levels. Genistein significantly reduced an HCC-induced increase in oxidative stress. Moreover, genistein dose-dependently reduced HCC-induced elevation of PDGF, versican, PKC and ERK protein expression levels. Moreover, genistein helped retain a normal hepatocyte structure and reduced fibrous tissue deposition, especially in high dose.

Conclusions: Genistein exerted antitumor and antioxidant effects and therefore suppress HCC development via inhibition of the PDGF/versican bidirectional axis, suppressing both ERK1 and PKC as downstream regulators. Therefore, genistein is a potential novel therapeutic candidate for improving the outcome of patients with HCC.

目的:染料木素是大豆中公认的具有抗氧化、抗炎、抗血管生成和抗肿瘤活性的异黄酮。本研究旨在检测染料木素对肝细胞癌中肝细胞异黄酮/血小板衍生生长因子(PDGF)轴的调节能力。方法:用25或75 mg/kg染料木素诱导雄性sd大鼠肝细胞癌。通过测定Nrf2基因表达和肝脏丙二醛(MDA)、超氧化物歧化酶(SOD)、还原性谷胱甘肽水平来评价染料木素的抗氧化活性。Western blotting和免疫染色检测versican、PDGF、PKC和ERK-1蛋白的表达。结果:HCC诱导氧化应激、PDGF、versican、PKC和ERK蛋白表达水平升高。染料木素显著降低hcc诱导的氧化应激增加。此外,染料木素剂量依赖性地降低了hcc诱导的PDGF、versican、PKC和ERK蛋白表达水平升高。此外,染料木素有助于保持正常的肝细胞结构和减少纤维组织沉积,特别是在高剂量下。结论:染料木素具有抗肿瘤和抗氧化作用,通过抑制PDGF/versican双向轴,抑制下游调控因子ERK1和PKC,从而抑制HCC的发展。因此,染料木素是改善HCC患者预后的潜在新型治疗候选药物。
{"title":"Chemopreventive and hepatoprotective effects of genistein via inhibition of oxidative stress and the versican/PDGF/PKC signaling pathway in experimentally induced hepatocellular carcinoma in rats by thioacetamide.","authors":"Yousra M El-Far,&nbsp;Ahmed E Khodir,&nbsp;Ziad A Emarah,&nbsp;Mohamed A Ebrahim,&nbsp;Mohammed M H Al-Gayyar","doi":"10.1080/13510002.2022.2031515","DOIUrl":"https://doi.org/10.1080/13510002.2022.2031515","url":null,"abstract":"<p><strong>Objective: </strong>Genistein is a recognized isoflavone present in soybeans with antioxidant, anti-inflammatory, antiangiogenic and antitumor activities. This study aimed to test ability of genistein in modulating versican/platelet derived growth factor (PDGF) axis in HCC.</p><p><strong>Methods: </strong>HCC was experimentally induced in male Sprague-Dawley rats then treated with 25 or 75 mg/kg genistein. Antioxidant activities of genistein was assessed by measuring the gene expression of Nrf2 and the hepatic levels of malondialdehyde (MDA), superoxide dismutase (SOD) and reduced glutathione. Expression of versican, PDGF, protein kinase C (PKC) and ERK-1 protein was assessed by Western blotting and immunostaining.</p><p><strong>Results: </strong>HCC induced an elevation in oxidative stress, PDGF, versican, PKC and ERK protein expression levels. Genistein significantly reduced an HCC-induced increase in oxidative stress. Moreover, genistein dose-dependently reduced HCC-induced elevation of PDGF, versican, PKC and ERK protein expression levels. Moreover, genistein helped retain a normal hepatocyte structure and reduced fibrous tissue deposition, especially in high dose.</p><p><strong>Conclusions: </strong>Genistein exerted antitumor and antioxidant effects and therefore suppress HCC development via inhibition of the PDGF/versican bidirectional axis, suppressing both ERK1 and PKC as downstream regulators. Therefore, genistein is a potential novel therapeutic candidate for improving the outcome of patients with HCC.</p>","PeriodicalId":21096,"journal":{"name":"Redox Report","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/5e/e3/YRER_27_2031515.PMC8794077.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39860178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Caffeine reduces oxidative stress to protect against hyperoxia-induced lung injury via the adenosine A2A receptor/cAMP/PKA/Src/ERK1/2/p38MAPK pathway. 咖啡因通过腺苷A2A受体/cAMP/PKA/Src/ERK1/2/p38MAPK通路降低氧化应激,保护机体免受高氧诱导的肺损伤。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2022-12-01 DOI: 10.1080/13510002.2022.2143114
Xijuan Wang, Shuai Lv, Jianwei Sun, Meihui Zhang, Lei Zhang, Yan Sun, Ziyan Zhao, Dandan Wang, Xinjing Zhao, Jiajie Zhang

Objectives: Caffeine has been shown to reduce the incidence of bronchopulmonary dysplasia (BPD). To investigate the protective mechanism of caffeine in a hyperoxia-based cell model of BPD in vitro.Methods: Type II alveolar epithelial cells (AECs II) were isolated and randomly divided into 6 groups: the normal, hyperoxia, caffeine (50 μM caffeine), antagonist (5 μM ZM241385), agonist (5 μM CGS21680), and DMSO groups. Transfection with siRNA against adenosine A2A receptor (siA2AR) was performed in AECs II.Results: Caffeine alone or in combination with adenosine A2A receptor (A2AR) antagonist inhibited apoptosis, promoted proliferation and reduced oxidative stress (OS). The cyclic adenosine monophosphate (cAMP), protein kinase A (PKA) mRNA, A2AR mRNA and the protein levels of A2AR, phospho-Src, phospho-ERK1/2, phospho-P38 and cleaved caspase-3 were decreased in the caffeine and antagonist groups compared with that in the hyperoxia group. However, the effects of caffeine above were weakened by the A2AR agonist. Knockdown of A2AR showed similar results to caffeine.Discussion: Caffeine can reduce apoptosis, promote proliferation, and alleviate OS in hyperoxia-induced AECs II injury by inhibiting the A2AR/cAMP/PKA/Src/ERK1/2/p38MAPK signaling pathway. Caffeine and A2AR may serve as a promising therapeutic target for BPD in prematurity.

目的:咖啡因已被证明可以降低支气管肺发育不良(BPD)的发病率。探讨咖啡因对体外高氧性BPD细胞模型的保护作用机制。方法:分离ⅱ型肺泡上皮细胞(AECs II),随机分为正常组、高氧组、咖啡因组(50 μM咖啡因)、拮抗剂组(5 μM ZM241385)、激动剂组(5 μM CGS21680)和DMSO组。在AECs II中转染siRNA对抗腺苷A2A受体(siA2AR)。结果:咖啡因单独或与腺苷A2A受体(A2AR)拮抗剂联合抑制细胞凋亡,促进细胞增殖,降低氧化应激(OS)。与高氧组相比,咖啡因和拮抗剂组的环磷酸腺苷(cAMP)、蛋白激酶A (PKA) mRNA、A2AR mRNA以及A2AR、phospho-Src、phospho-ERK1/2、phospho-P38和cleaved - caspase-3蛋白水平均降低。然而,上述咖啡因的作用被A2AR激动剂削弱了。敲除A2AR的结果与咖啡因相似。讨论:咖啡因可通过抑制A2AR/cAMP/PKA/Src/ERK1/2/p38MAPK信号通路,减少高氧诱导AECs II损伤的凋亡,促进细胞增殖,减轻OS。咖啡因和A2AR可能作为早产儿BPD的有希望的治疗靶点。
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引用次数: 4
Evaluation of targeted oxidative stress induced by oxygen-ozone in vitro after ischemic induction. 体外氧臭氧诱导缺血后靶向氧化应激的评价。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2022-12-01 DOI: 10.1080/13510002.2022.2143104
Jessica Rodrigues Orlandin, Sarah Ingrid Pinto Santos, Luciana Cristina Machado, Paulo Fantinato Neto, Fabiana Fernandes Bressan, Naira Caroline Godoy Pieri, Kaiana Recchia, Meline de Paula Coutinho, Priscilla Avelino Ferreira Pinto, Annalisa Santucci, Valter Travagli, Carlos Eduardo Ambrosio

Encephalic vascular accident, or stroke, is the most common pathology of the central nervous system in humans, the second leading cause of death and physical and cognitive disabilities, in developing countries. It presents as an ischemic (more common) or hemorrhagic form. Ozone therapy has been shown to be effective in neuromodulation, neuroprotection, and nerve regeneration. The present study aimed to evaluate the effect of targeted mild ozone after inducing cerebral ischemia in vitro. Neuroblastoma lineage cells (SH-SY5Y) and canine amniotic membrane stem cells were subjected to 24 hours of hypoxia in an incubator culture chamber. The cells were evaluated by MTT assay, colorimetric assay spectrophotometry, fluorescence microscopy, and flow cytometry. Treatment with low concentrations of ozone (2-10 µg/mL), indicated a possible neuroregenerative effect at low concentrations, correlated with lower levels of apoptosis and oxidative stress compared to cells not subjected to hypoxia. High concentrations of ozone (18-30 µg/mL) promoted an increase in rate of apoptosis and cell death. We developed a novel protocol that mimics ozone therapy for ischemic stroke, using ozonized culture medium after hypoxia induction. Although more studies are needed, we conclude that ozone has a dose-dependent hormetic effect and can reverse the effect of ischemia in vitro at low concentrations.

脑血管意外或中风是人类中枢神经系统最常见的病理,是发展中国家造成死亡和身体和认知残疾的第二大原因。它表现为缺血(更常见)或出血性。臭氧疗法已被证明在神经调节、神经保护和神经再生方面是有效的。本研究旨在评价靶向轻度臭氧在体外诱导脑缺血后的作用。神经母细胞瘤谱系细胞(SH-SY5Y)和犬羊膜干细胞在培养箱中缺氧24小时。采用MTT法、比色法、分光光度法、荧光显微镜和流式细胞术对细胞进行评价。低浓度臭氧处理(2-10µg/mL)表明,与未缺氧的细胞相比,低浓度臭氧处理可能具有神经再生作用,与较低水平的凋亡和氧化应激相关。高浓度臭氧(18 ~ 30µg/mL)可促进细胞凋亡和细胞死亡。我们开发了一种新的方案,模拟臭氧治疗缺血性中风,使用缺氧诱导后的臭氧培养基。虽然需要更多的研究,但我们得出结论,臭氧具有剂量依赖性的致热效应,并且可以在低浓度下逆转体外缺血的影响。
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引用次数: 3
Lycium Barbarum polysaccharide protects HaCaT cells from PM2.5-induced apoptosis via inhibiting oxidative stress, ER stress and autophagy. 枸杞多糖通过抑制氧化应激、内质网应激和自噬来保护pm2.5诱导的HaCaT细胞凋亡。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2022-12-01 DOI: 10.1080/13510002.2022.2036507
Sen Zhu, Xuan Li, Bingrong Dang, Fen Wu, Chunming Wang, Changjun Lin

Objectives: Lycium barbarum polysaccharide (LBP) is a natural polysaccharide extracted from Lycium barbarum that has anti-inflammatory, anti-apoptotic and anti-aging effects, and plays a role in the prevention and treatment of various diseases. In this study, we investigated the therapeutic effect of LBP on particulate matter 2.5 (PM2.5)-induced skin damage.Methods: Cell viability was analyzed by MTT and LDH assays. Apoptosis was analyzed by Annexin V-FITC/PI staining. Oxidative stress/damage were assessed by intracellular ROS levels, MDA content and SOD activity. The intracellular protein expression was analyzed by Western blot. Mitochondrial damage was assayed by mitochondrial membrane potential with JC-1 probe. LC3-GFP adenovirus was transfected into HaCaT cells to analyze intracellular autophagosome levels.Results: In PM2.5-treated HaCaT cells, LBP pretreatment reduced PM2.5-induced cytotoxicity, ameliorated cell morphology and reduced cell apoptosis. LBP also inhibited the expression levels of GRP78 and CHOP, reduced the conversion of LC3I to LC3II, inhibited Bax protein and activated Bcl-2 protein. Furthermore, LBP inhibited PM2.5-induced mitochondrial autophagy (mitophagy) and mitochondrial damage. PM2.5-induced autophagy was regulated by endoplasmic reticulum (ER) stress.Conclusion: LBP protects skin cells from PM2.5-induced cytotoxicity by regulating the oxidative stress-ER stress-autophagy-apoptosis signaling axis, revealing that LBP has a great potential for the skin protection.

目的:枸杞多糖(Lycium barbarum多糖,LBP)是从枸杞中提取的天然多糖,具有抗炎、抗细胞凋亡、抗衰老等作用,对多种疾病有预防和治疗作用。在这项研究中,我们研究了枸杞多糖对PM2.5引起的皮肤损伤的治疗作用。方法:采用MTT法和LDH法测定细胞活力。Annexin V-FITC/PI染色分析细胞凋亡。通过细胞内ROS水平、MDA含量和SOD活性评估氧化应激/损伤。Western blot检测细胞内蛋白表达。采用JC-1探针,采用线粒体膜电位检测线粒体损伤。将LC3-GFP腺病毒转染HaCaT细胞,分析细胞内自噬体水平。结果:在pm2.5处理的HaCaT细胞中,LBP预处理降低了pm2.5诱导的细胞毒性,改善了细胞形态,减少了细胞凋亡。LBP还能抑制GRP78和CHOP的表达水平,降低LC3I向LC3II的转化,抑制Bax蛋白,激活Bcl-2蛋白。此外,枸杞多糖可抑制pm2.5诱导的线粒体自噬(mitophagy)和线粒体损伤。pm2.5诱导的自噬受内质网应激的调节。结论:枸杞多糖通过调节氧化应激-内质网应激-自噬-凋亡信号轴保护皮肤细胞免受pm2.5诱导的细胞毒性,提示枸杞多糖具有一定的皮肤保护作用。
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引用次数: 25
β-catenin ISGylation promotes lipid deposition and apoptosis in ethanol-stimulated liver injury models. β-连环蛋白isg酰化促进乙醇刺激肝损伤模型中的脂质沉积和细胞凋亡。
IF 3.8 2区 生物学 Q2 Biochemistry, Genetics and Molecular Biology Pub Date : 2022-12-01 DOI: 10.1080/13510002.2022.2109360
Qi Ding, Guodong Zhang, Yang Wang, Lei Xu, Meifei Wu, Yiwen Zhou, Tao Xu, Xiaoming Meng, Cheng Huang, Lei Zhang

Background: The restoration of the Wnt/β-catenin pathway to alleviate alcoholic fatty liver disease (AFLD) progression is under study as a new strategy for alcoholic liver disease (ALD) treatment. Recent studies have indicated that interferon-stimulated gene 15 (ISG15) can covalently bind to β-catenin by HECT E3 ubiquitin ligase 5 (HERC5), leading to ISG degradation and downregulation of β-catenin levels. However, the relationship between β-catenin and the ISG15 system in AFLD remains unclear.

Methods: Here, we explored the roles of the ISG15 system in β-catenin activation and in the pathogenesis of alcohol-induced liver injury and steatosis.

Results: In this study, HERC5 silencing upregulated β-catenin protein expression and inhibited lipid metabolism disorders and cell apoptosis. Reduced β-catenin protein expression, increased lipid metabolism disorders, and cell apoptosis were detected in cells induced with HERC5 overexpression, which was reversible with the reactive oxygen species (ROS) inhibitor. All the above results were statistically analyzed. Thus, these observations demonstrate that β-catenin ISGylation is a prominent regulator of ALD pathology, which works by regulating ROS to induce lipid metabolism disorders and cell apoptosis.

Conclusion: Our findings provided the mechanism involved in the β-catenin ISGylation, allowing for future studies on the prevention or amelioration of liver injury in ALD.

背景:恢复Wnt/β-catenin通路以缓解酒精性脂肪性肝病(AFLD)的进展作为酒精性肝病(ALD)治疗的新策略正在研究中。最近的研究表明,干扰素刺激基因15 (ISG15)可通过HECT E3泛素连接酶5 (HERC5)与β-catenin共价结合,导致ISG降解和β-catenin水平下调。然而,β-catenin与AFLD中ISG15系统之间的关系尚不清楚。方法:探讨ISG15系统在β-catenin激活和酒精性肝损伤及脂肪变性发病机制中的作用。结果:在本研究中,HERC5沉默上调β-catenin蛋白表达,抑制脂质代谢紊乱和细胞凋亡。在HERC5过表达诱导的细胞中,β-catenin蛋白表达降低,脂质代谢紊乱增加,细胞凋亡,这在活性氧(ROS)抑制剂下是可逆的。对以上结果进行统计分析。因此,这些观察结果表明,β-catenin isg酰化是ALD病理的重要调节因子,通过调节ROS诱导脂质代谢紊乱和细胞凋亡。结论:我们的研究结果提供了β-catenin isg酰化的机制,为今后预防或改善ALD肝损伤的研究提供了基础。
{"title":"β-catenin ISGylation promotes lipid deposition and apoptosis in ethanol-stimulated liver injury models.","authors":"Qi Ding,&nbsp;Guodong Zhang,&nbsp;Yang Wang,&nbsp;Lei Xu,&nbsp;Meifei Wu,&nbsp;Yiwen Zhou,&nbsp;Tao Xu,&nbsp;Xiaoming Meng,&nbsp;Cheng Huang,&nbsp;Lei Zhang","doi":"10.1080/13510002.2022.2109360","DOIUrl":"https://doi.org/10.1080/13510002.2022.2109360","url":null,"abstract":"<p><strong>Background: </strong>The restoration of the Wnt/β-catenin pathway to alleviate alcoholic fatty liver disease (AFLD) progression is under study as a new strategy for alcoholic liver disease (ALD) treatment. Recent studies have indicated that interferon-stimulated gene 15 (ISG15) can covalently bind to β-catenin by HECT E3 ubiquitin ligase 5 (HERC5), leading to ISG degradation and downregulation of β-catenin levels. However, the relationship between β-catenin and the ISG15 system in AFLD remains unclear.</p><p><strong>Methods: </strong>Here, we explored the roles of the ISG15 system in β-catenin activation and in the pathogenesis of alcohol-induced liver injury and steatosis.</p><p><strong>Results: </strong>In this study, HERC5 silencing upregulated β-catenin protein expression and inhibited lipid metabolism disorders and cell apoptosis. Reduced β-catenin protein expression, increased lipid metabolism disorders, and cell apoptosis were detected in cells induced with HERC5 overexpression, which was reversible with the reactive oxygen species (ROS) inhibitor. All the above results were statistically analyzed. Thus, these observations demonstrate that β-catenin ISGylation is a prominent regulator of ALD pathology, which works by regulating ROS to induce lipid metabolism disorders and cell apoptosis.</p><p><strong>Conclusion: </strong>Our findings provided the mechanism involved in the β-catenin ISGylation, allowing for future studies on the prevention or amelioration of liver injury in ALD.</p>","PeriodicalId":21096,"journal":{"name":"Redox Report","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9586657/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40340635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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Redox Report
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