Journal of Biochemical and Molecular Toxicology最新文献

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Astaxanthin ameliorated isoproterenol induced myocardial infarction via improving the mitochondrial function and antioxidant activity in rats 虾青素通过改善大鼠线粒体功能和抗氧化活性,改善异丙肾上腺素诱发的心肌梗死。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23804
Doaa Salah Eddin Mahmoud, Maher A. Kamel, Ibrahim El-Tantawy El-Sayed, Reem Binsuwaidan, Elshaymaa I. Elmongy, Mohand Kareem Razzaq, Mabrouk Attia Abd Eldaim, El S. Abdel Megeed Ahmed, Sara A. Shaker
{"title":"Astaxanthin ameliorated isoproterenol induced myocardial infarction via improving the mitochondrial function and antioxidant activity in rats","authors":"Doaa Salah Eddin Mahmoud,&nbsp;Maher A. Kamel,&nbsp;Ibrahim El-Tantawy El-Sayed,&nbsp;Reem Binsuwaidan,&nbsp;Elshaymaa I. Elmongy,&nbsp;Mohand Kareem Razzaq,&nbsp;Mabrouk Attia Abd Eldaim,&nbsp;El S. Abdel Megeed Ahmed,&nbsp;Sara A. Shaker","doi":"10.1002/jbt.23804","DOIUrl":"10.1002/jbt.23804","url":null,"abstract":"<p>The present study evaluated the cardioprotective effect of astaxanthin (ASX) against isoproterenol (ISO) induced myocardial infarction in rats via the pathway of mitochondrial biogenesis as the possible molecular target of astaxanthin. The control group was injected with normal physiological saline subcutaneously for 2 days. The second group was injected with ISO at a dose of 85 mg/kg bwt subcutaneously for 2 days. The third, fourth and fifth groups were supplemented with ASX at doses of 10, 20, 30 mg/kg bwt, respectively daily by oral gavage for 21 days then injected with ISO dose of 85 mg/kg bwt subcutaneously for 2 successive days. Isoproterenol administration in rats elevated the activities of Creatine kinase-MB (CK-MB), aspartate transaminase (AST), lactate dehydrogenase (LDH), and other serum cardiac biomarkers Troponin-I activities, oxidative stress biomarkers, malondialdehyde(MDA), Nuclear factor-kappa B (NF-KB), while it decreased Peroxisome proliferator-activated receptor-gamma coactivator (PGC-1α), Nuclear factor erythroid-2-related factor 2 (Nfe212), mitochondrial transcriptional factor A (mt TFA), mitochondrial DNA copy number and glutathione system parameters. However, Astaxanthin decreased the activities of serum AST, LDH, CK-MB, and Troponin I that elevated by ISO. In addition, it increased glutathione peroxidase and reductase activities, total glutathione and reduced GSH content, and GSH/GSSG ratio, mtDNA copy number, PGC-1α expression and Tfam expression that improved mitochondrial biogenesis while it decreased GSSG and MDA contents and NF-KB level in the cardiac tissues. This study indicated that astaxanthin relieved isoproterenol induced myocardial infarction via scavenging free radicals and reducing oxidative damage and apoptosis in cardiac tissue.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
CASQ2 alleviates lung cancer by inhibiting M2 tumor-associated macrophage polarization and JAK/STAT pathway CASQ2 通过抑制 M2 肿瘤相关巨噬细胞极化和 JAK/STAT 通路缓解肺癌。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23801
Yan Ding, Xiaoliang Yuan, Ying Wang, Jun Yan
{"title":"CASQ2 alleviates lung cancer by inhibiting M2 tumor-associated macrophage polarization and JAK/STAT pathway","authors":"Yan Ding,&nbsp;Xiaoliang Yuan,&nbsp;Ying Wang,&nbsp;Jun Yan","doi":"10.1002/jbt.23801","DOIUrl":"10.1002/jbt.23801","url":null,"abstract":"<p>Lung cancer (LC) is a major inducer of cancer-related death. We aim to reveal the effect of Calsequestrin2 (CASQ2) on macrophage polarization and Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway in LC. Hub genes were determined from protein–protein interaction networks based on GSE21933 and GSE1987 data sets using bioinformatic analysis. Expression of hub genes was verified by real-time quantitative polymerase chain reaction (RT-qPCR). Cell Counting Kit-8, 5-ethynyl-2'-deoxyuridine, wound-healing, colony formation, and transwell assays were performed to assess the impact of CASQ2 on LC cells. A xenograft mouse model was evaluated using hematoxylin–eosin, immunohistochemistry, and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling staining to investigate the effect of CASQ2 on LC. The role of CASQ2 in regulating macrophage polarization and JAK/STAT pathway was evaluated by western blot andRT-qPCR. We screened out 155 common differentially expressed genes in GSE21933 and GSE1987 data sets. Myomesin-2, tyrosine kinase, sex determining region Y-box 2, platelet and endothelial cell adhesion molecule 1, matrix metallopeptidase 9, claudin-5, caveolin-1, CASQ2, recombinant ATPase, Ca++ transporting, cardiac muscle, slow twitch 2 (ATP2A2), and ankyrin repeat domain 1 were identified as the hub genes with high prediction value. CASQ2 was selected as a pivotal regulator of LC. In vitro experiments and xenograft models revealed that CASQ2 overexpression suppressed proliferation, colony formation, migration, invasion of LC cells, and tumor growth in vivo. Additionally, overexpression of CASQ2 promoted the expression of M1 macrophage markers (cluster of differentiation 80 [CD80], interleukin [IL]-12, inducible nitric oxide synthase [iNOS]), while decreasing the expression of M2 macrophage markers (CD163, IL-10, Arg1) in tumor-associated macrophages and xenograft tissues. Finally, we found that overexpression of CASQ2 inhibited JAK/STAT pathway. CASQ2 is a novel biomarker, which can alleviate LC via inhibiting M2 tumor-associated macrophage polarization and JAK/STAT pathway.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Therapeutic approaches and novel antifibrotic agents in renal fibrosis: A comprehensive review 肾纤维化的治疗方法和新型抗纤维化药物:全面回顾。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23795
Ganesh Panditrao Lahane, Arti Dhar, Audesh Bhat
{"title":"Therapeutic approaches and novel antifibrotic agents in renal fibrosis: A comprehensive review","authors":"Ganesh Panditrao Lahane,&nbsp;Arti Dhar,&nbsp;Audesh Bhat","doi":"10.1002/jbt.23795","DOIUrl":"10.1002/jbt.23795","url":null,"abstract":"<p>Renal fibrosis (RF) is one of the underlying pathological conditions leading to progressive loss of renal function and end-stage renal disease (ESRD). Over the years, various therapeutic approaches have been explored to combat RF and prevent ESRD. Despite significant advances in understanding the underlying molecular mechanism(s), effective therapeutic interventions for RF are limited. Current therapeutic strategies primarily target these underlying mechanisms to halt or reverse fibrotic progression. Inhibition of transforming growth factor-β (TGF-β) signaling, a pivotal mediator of RF has emerged as a central strategy to manage RF. Small molecules, peptides, and monoclonal antibodies that target TGF-β receptors or downstream effectors have demonstrated potential in preclinical models. Modulating the renin–angiotensin system and targeting the endothelin system also provide established approaches for controlling fibrosis-related hemodynamic changes. Complementary to pharmacological strategies, lifestyle modifications, and dietary interventions contribute to holistic management. This comprehensive review aims to summarize the underlying mechanisms of RF and provide an overview of the therapeutic strategies and novel antifibrotic agents that hold promise in its treatment.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Targeting the hydrophobic region of pyroglutamate-modified amyloid-β by tyrocidine A prevents its nucleation–aggregation process and its “catalytic effect” on the Aβs aggregation 酪脒 A 靶向焦谷氨酸修饰的淀粉样蛋白-β的疏水区域,可阻止其成核-聚集过程及其对淀粉样蛋白-β聚集的 "催化作用"。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23800
Wenjing Qin, Daoyuan Chen, Youqiao Wang, Ziyi Liu, Binhua Zhou, Xianzhang Bu, Gesi Wen
{"title":"Targeting the hydrophobic region of pyroglutamate-modified amyloid-β by tyrocidine A prevents its nucleation–aggregation process and its “catalytic effect” on the Aβs aggregation","authors":"Wenjing Qin,&nbsp;Daoyuan Chen,&nbsp;Youqiao Wang,&nbsp;Ziyi Liu,&nbsp;Binhua Zhou,&nbsp;Xianzhang Bu,&nbsp;Gesi Wen","doi":"10.1002/jbt.23800","DOIUrl":"10.1002/jbt.23800","url":null,"abstract":"<p>Pyroglutamate (pE)-modified amyloid-β (Aβ) peptides play a crucial role in the development of Alzheimer's disease. pEAβ<sub>3-42</sub> can rapidly form oligomers that gradually elongate hydrophobic segments to form β-sheet-rich amyloid intermediates, ultimately resulting in the formation of mature amyloid fibrils. pEAβ<sub>3-42</sub> can also catalyze the aggregation of Aβ species and subsequently accelerate the formation of amyloid senile plaques. Considering the recent clinical success of the pEAβ<sub>3-42</sub>-targeting antibody donanemab, molecules that strongly bind pEAβ<sub>3-42</sub> and prevent its aggregation and catalytic effect on Aβs may also provide potential therapeutic options for Alzheimer's disease. Here, we demonstrate that the natural antibiotic cyclopeptide tyrocidine A (TA) not only strongly inhibits the aggregation of Aβ<sub>1-42</sub> as previously reported, but also interacts with the hydrophobic C-terminus and middle domain of pEAβ<sub>3-42</sub> to maintain an unordered conformation, effectively impeding the formation of initial oligomers and subsequently halting the aggregation of pEAβ<sub>3-42</sub>. Furthermore, TA can disrupt the “catalytic effect” of pEAβ<sub>3-42</sub> on amyloid aggregates, effectively suppressing Aβ aggregation and ultimately preventing the pathological events induced by Aβs.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Diet restriction enhances the effect of immune checkpoint block by inhibiting the intratumoral mTORC1/B7-H3 axis 饮食限制通过抑制瘤内 mTORC1/B7-H3 轴增强了免疫检查点阻断的效果。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23803
Duqing Xiao, Tingting Liu, Youguang Pan
{"title":"Diet restriction enhances the effect of immune checkpoint block by inhibiting the intratumoral mTORC1/B7-H3 axis","authors":"Duqing Xiao,&nbsp;Tingting Liu,&nbsp;Youguang Pan","doi":"10.1002/jbt.23803","DOIUrl":"10.1002/jbt.23803","url":null,"abstract":"<p>Immune checkpoint blockade therapy has demonstrated significant therapeutic efficacy in certain cancer types; however, the impact of dietary restriction remains scarcely reported in this context. This study aimed to investigate the influence of dietary restriction on anti-PDL-1 therapy and the interplay of immune cells within this context. Using an anti-PDL-1 regimen combined with dietary restrictions, tumor progression was assessed in LLC-bearing mice. Flow cytometry was employed to analyze immune cell infiltration and differentiation levels within the tumor microenvironment. The expression of mTORC1/B7-H3 in tumors subjected to dietary restriction was also examined. LLC tumors with elevated B7-H3 expression were validated in mice to determine its inhibitory effect on immune cell proliferation and differentiation. A CD3/B7-H3 chimeric antibody was developed for therapeutic intervention in B7-H3 overexpressing tumors, with subsequent T cell responses assessed through flow cytometry. Dietary restriction potentiated the effect of anti-PDL1 therapy by suppressing the intratumorally mTORC1/B7-H3 axis. In vivo experiments demonstrated that elevated B7-H3 expression in tumors reduced infiltration and activation of CD8 + T cells within the tumor, while it did not affect tumor-infiltrating Tregs. In vitro studies revealed that high B7-H3 expression influenced the proliferation and activation of CD8 + T cells within a Coculture system. The constructed CD3/B7-H3 chimeric antibody prominently activated TCR within B7-H3 overexpressing tumors and impeded tumor progression. The findings suggest that dietary restriction enhances the efficacy of immune checkpoint blockade by modulating the intratumoral mTORC1/B7-H3 axis.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
mTORC2 knockdown mediates lipid metabolism to alleviate hyperlipidemic pancreatitis through PPARα 敲除 mTORC2 可通过 PPARα 促进脂质代谢,从而缓解高脂血症性胰腺炎。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23802
Xiangyang Wang, Yilei Liu, Yaxiong Zhou, Min Li, Tingting Mo, Xiaoping Xu, Zhiyuan Chen, Yu Zhang, Li Yang
{"title":"mTORC2 knockdown mediates lipid metabolism to alleviate hyperlipidemic pancreatitis through PPARα","authors":"Xiangyang Wang,&nbsp;Yilei Liu,&nbsp;Yaxiong Zhou,&nbsp;Min Li,&nbsp;Tingting Mo,&nbsp;Xiaoping Xu,&nbsp;Zhiyuan Chen,&nbsp;Yu Zhang,&nbsp;Li Yang","doi":"10.1002/jbt.23802","DOIUrl":"10.1002/jbt.23802","url":null,"abstract":"<p>Hyperlipidemic pancreatitis (HP) is an inflammatory injury of the pancreas triggered by elevated serum triglyceride (TG) levels. The mechanistic target of rapamycin (mTOR) signaling pathway plays a crucial role in regulating lipid homeostasis and inflammation. This study aimed to investigate whether the activity of mTOR complex 2 (mTORC2) affects the progression of HP and its underlying mechanisms. In vivo, a high-fat diet and retrograde administration of sodium taurocholate were employed to establish the HP models in rats, with pancreatic tissue pathology evaluated. The expression of Rictor and peroxisome proliferator-activator receptor (PPAR) was examined. The serum levels of TG, fatty acid metabolites, inflammatory and lipid metabolism-related factors were determined. In vitro, pancreatic acinar cells (PACs) were exposed to palmitic acid and cholecystokinin-8. PAC apoptosis, pyroptosis, and ferroptosis were assessed. In the HP models, rats and PACs exhibited upregulated Rictor and downregulated PPARα, and Rictor knockdown promoted PPARα expression. In vivo, Rictor knockdown decreased the serum levels of TG, α-amylase, total cholesterol, low-density lipoprotein cholesterol, lactate dehydrogenase, and inflammatory factors, while increasing high-density lipoprotein cholesterol levels. Rictor knockdown increased ACOX1 and CPT1α and decreased SREBP-1, CD36, SCD1, ACLY, and ACACA. Rictor knockdown reduced damage to pancreatic tissue structure. In vitro, Rictor knockdown inhibited PAC apoptosis, pyroptosis, and ferroptosis. Treatment with the PPARα antagonist GW6471 abolished the beneficial effects of Rictor knockdown. Rictor/mTORC2 deficiency reduces serum TG levels, maintains lipid homeostasis, and suppresses inflammation by inhibiting PPARα expression. Weakening mTORC2 activity holds promise as a novel therapeutic strategy for HP.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Estrogen treatment in combination with pyruvate kinase M2 inhibition precipitate significant cumulative antitumor effects in colorectal cancer 雌激素治疗与丙酮酸激酶 M2 抑制剂联合使用,可在结直肠癌中产生显著的累积抗肿瘤效果。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23799
Batoul Abi Zamer, Zheng-Guo Cui, Mohamed Ahmed Eladl, Mawieh Hamad, Jibran Sualeh Muhammad
{"title":"Estrogen treatment in combination with pyruvate kinase M2 inhibition precipitate significant cumulative antitumor effects in colorectal cancer","authors":"Batoul Abi Zamer,&nbsp;Zheng-Guo Cui,&nbsp;Mohamed Ahmed Eladl,&nbsp;Mawieh Hamad,&nbsp;Jibran Sualeh Muhammad","doi":"10.1002/jbt.23799","DOIUrl":"10.1002/jbt.23799","url":null,"abstract":"<p>It is well established that pyruvate kinase M2 (PKM2) activity contributes to metabolic reprogramming in various cancers, including colorectal cancer (CRC). Estrogen or 17β-estradiol (E2) signaling is also known to modulate glycolysis markers in cancer cells. However, whether the inhibition of PKM2 combined with E2 treatment could adversely affect glucose metabolism in CRC cells remains to be investigated. First, we confirmed the metabolic plasticity of CRC cells under varying environmental conditions. Next, we identified glycolysis markers that were upregulated in CRC patients and assessed in vitro mRNA levels following E2 treatment. We found that <i>PKM2</i> expression, which is highly upregulated in CRC clinical samples, is not altered by E2 treatment in CRC cells. In this study, glucose uptake, generation of reactive oxygen species (ROS), lactate production, cell viability, and apoptosis were evaluated in CRC cells following E2 treatment, PKM2 silencing, or a combination of both. Compared to individual treatments, combination therapy resulted in a significant reduction in cell viability and enhanced apoptosis. Glucose uptake and ROS production were markedly reduced in PKM2-silenced E2-treated cells. The data presented here suggest that E2 signaling combined with PKM2 inhibition cumulatively targets glucose metabolism in a manner that negatively impacts CRC cell growth. These findings hold promise for novel therapeutic strategies targeting altered metabolic pathways in CRC.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jbt.23799","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hesperetin-loaded chitosan nanoparticles ameliorate hyperglycemia by regulating key enzymes of carbohydrate metabolism in a diabetic rat model 通过调节糖尿病大鼠模型中碳水化合物代谢的关键酶,载入橙皮素的壳聚糖纳米粒子可改善高血糖症。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23805
Sivamathi Rathna Priya Radhakrishnan, Karthik Mohan, Ashokkumar Natarajan
{"title":"Hesperetin-loaded chitosan nanoparticles ameliorate hyperglycemia by regulating key enzymes of carbohydrate metabolism in a diabetic rat model","authors":"Sivamathi Rathna Priya Radhakrishnan,&nbsp;Karthik Mohan,&nbsp;Ashokkumar Natarajan","doi":"10.1002/jbt.23805","DOIUrl":"10.1002/jbt.23805","url":null,"abstract":"<p>The study aimed to investigate the potential of hesperetin-loaded chitosan nanoparticles (HSPCNPs) in alleviating hyperglycemia by modulating key enzymes in diabetic rats. Chitosan nanoparticles loaded with hesperetin were prepared using the ionic gelation method and characterized with Electron microscope (SEM), zeta potential, particle size analysis, Fourier-transform infrared (FT-IR), Energy dispersive spectroscopy (EDS) and Encapsulation efficiency and Loading efficiency. To induce diabetes, rats were fed a high-fat beef tallow diet for 28 days, then given a single dose of streptozotocin (STZ) at 35 mg/kg b.w in 0.1 M citrate buffer (pH 4.0). Rats were treated with HSPCNPs at doses of 10, 20, and 40 mg/kg b.w. The analyzed parameters included body weight, food and water intake, plasma glucose and insulin, liver and skeletal muscle glycogen levels, and carbohydrate metabolism. SEM imaging revealed dimensions between 124.2 and 251.6 nm and a mean particle size of 145.0 nm. FT-IR analysis confirmed the presence of functional groups in the chitosan nanoparticles, and the zeta potential was 35.5 mV. HSPCNP 40 mg/kg b.w significantly (<i>p</i> &lt; 0.05) reduced blood glucose levels and glycosylated hemoglobin, improving body weight, food intake, and reducing water intake. In diabetic rats, enzymes for carbohydrate metabolism like fructose 1,6-bisphosphatase, phosphoenolpyruvate carboxykinase, and glucose 6-phosphatase are evaluated in the liver, while glucose 6 phosphate dehydrogenase and hexokinase activity were significantly lower. Additionally, plasma insulin levels increased, indicating enhanced insulin sensitivity. The results show that HSPCNPs at 40 mg/kg b.w. ameliorate hyperglycemia to provide robust protection against diabetic complications and significantly improve metabolic health.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Calycosin activates Nrf2/Keap1 signaling to ameliorate hydrogen peroxide-induced spinal cord neuron death and mitochondrial dysfunction 萼萼素能激活Nrf2/Keap1信号转导,从而改善过氧化氢诱导的脊髓神经元死亡和线粒体功能障碍。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-12 DOI: 10.1002/jbt.23808
Ye Ruan, Ziming Cai, Zhengwen Kang, Jinzhu Liang, He Tian, Qinghe Yu, Qiusheng Zhang, Wenping Lin
{"title":"Calycosin activates Nrf2/Keap1 signaling to ameliorate hydrogen peroxide-induced spinal cord neuron death and mitochondrial dysfunction","authors":"Ye Ruan,&nbsp;Ziming Cai,&nbsp;Zhengwen Kang,&nbsp;Jinzhu Liang,&nbsp;He Tian,&nbsp;Qinghe Yu,&nbsp;Qiusheng Zhang,&nbsp;Wenping Lin","doi":"10.1002/jbt.23808","DOIUrl":"10.1002/jbt.23808","url":null,"abstract":"<p>Oxidative stress is a hallmark of secondary injury of spinal cord injuries. Controlling oxidative stress is crucial for mitigating secondary injury and promoting functional recovery after spinal cord injuries. Calycosin is an O-methylated isoflavone with antioxidant activity. To evaluate the effect of calycosin on spinal cord neurons under oxidative stress and clarify the molecular mechanism underlying the effect, we tested the neuroprotective activity of calycosin in a primary spinal cord neuron culture model. We found that calycosin protected neurons from H<sub>2</sub>O<sub>2</sub>-induced neuronal death in a dose-dependent manner. Further experiments revealed that calycosin decreased H<sub>2</sub>O<sub>2</sub>-induced mitochondrial fragmentation and mitochondrial membrane potential loss, and subsequently reduced H<sub>2</sub>O<sub>2</sub>-triggered release of mitochondrial cytochrome c into the cytoplasm. In addition, calycosin inhibited H<sub>2</sub>O<sub>2</sub>-induced reactive oxygen species generation and activation of NF-κB signaling in spinal cord neurons. Furthermore, the expression of several antioxidant enzymes such as HO-1, NQO1, GCLC, GCLM, TrxR1, and Trx1 was significantly promoted by calycosin. More importantly, we revealed that the Nrf2/Keap1 signal is crucial for the effect of calycosin, because calycosin increased the amount of nuclear Nrf2 while decreasing the amount of cytoplasmic Nrf2. Nrf2 knockdown with siRNA transfection abolished the neuroprotective effect of calycosin. Taken together, this study disclosed a novel mechanism by which calycosin combats oxidative stress. Our study thus sheds light on the potential clinical application of calycosin in SCI treatment.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Biologically based strategies for overcoming in vivo barriers with functional nano-delivery systems 利用功能性纳米给药系统克服体内障碍的生物战略。
IF 3.2 3区 医学
Journal of Biochemical and Molecular Toxicology Pub Date : 2024-08-08 DOI: 10.1002/jbt.23782
Roya Ahmadzadeh, Seyed Alireza Taheri, Neda Mohammadi, Ahmed Hjazi, Soumya V. Menon, Wesam R. Kadhum, Abhinav Kumar, Maha Noori Shakir, Farid Karkon Shayan, Nahal Shirinkami
{"title":"Biologically based strategies for overcoming in vivo barriers with functional nano-delivery systems","authors":"Roya Ahmadzadeh,&nbsp;Seyed Alireza Taheri,&nbsp;Neda Mohammadi,&nbsp;Ahmed Hjazi,&nbsp;Soumya V. Menon,&nbsp;Wesam R. Kadhum,&nbsp;Abhinav Kumar,&nbsp;Maha Noori Shakir,&nbsp;Farid Karkon Shayan,&nbsp;Nahal Shirinkami","doi":"10.1002/jbt.23782","DOIUrl":"10.1002/jbt.23782","url":null,"abstract":"<p>Nanomedicine has been developed to reduce or eliminate the side effects and toxicity upon systemic therapy of chemotherapeutic agents and to improve their therapeutic efficacy. However, the translation of non-sized or nano-encapsulated drugs is hampered by the low penetration and accumulation of engineered nanoparticles (NPs) in sites of tumors as well as their poor pharmacokinetics. This may be due to the synthetic structure of NPs and also complicated and unknown characteristics of the solid tumor microenvironment (TME). As a result, the TME is being better identified, and the interactions between NPs and the TME or human body are being discovered or predicted. These findings have led to the development of more biocompatible, intelligent, and controllable bio-based nanoformulations that could overcome current barriers and provide sufficient drug delivery to the TME, as discussed in this paper. These formulations are designed to (i) modify the surface of NPs to improve blood circulation while reducing their off-target accumulation and side effects in vivo, (ii) pass through the tumor vasculature by modulating or targeting angiogenesis, (iii) promote NPs distribution in solid tumor regions by applying biological/physical stimuli or extracellular matrix remodeling, and (iv) overcome the cell membrane barrier and other compartments of the cell by specific cell targeting to release the payload drug into the cytoplasm or nucleoplasm.</p>","PeriodicalId":15151,"journal":{"name":"Journal of Biochemical and Molecular Toxicology","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141901907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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