Kozo Takeuchi, Shigeyuki Yamamoto, Yukiko Hatano, Dai Fukumoto, Takeharu Kakiuchi, Yoshiyuki Shimizu, Kimiko Kazumura
{"title":"Capturing systemic inflammation in a nonhuman primate using a new leukocyte activity assessment system.","authors":"Kozo Takeuchi, Shigeyuki Yamamoto, Yukiko Hatano, Dai Fukumoto, Takeharu Kakiuchi, Yoshiyuki Shimizu, Kimiko Kazumura","doi":"10.3164/jcbn.25-65","DOIUrl":"10.3164/jcbn.25-65","url":null,"abstract":"<p><p>We developed an optical system that simultaneously monitors leukocytes producing the reactive oxygen species (ROS) superoxide and hypochlorite ions using only a few microliters of whole blood. Here, we report the first use of this system to measure circulating blood from a nonhuman primate. This observational pilot study involved rhesus monkeys recruited for a different purpose, brain positron emission tomography in the conscious state. The results indicated that (1) surgical inflammation influences the total ROS produced by leukocytes per unit of time; (2) blood analysis of a septic rhesus monkey exhibited a characteristic pattern of leukocyte ROS production; and (3) a strong positive correlation was observed between leukocyte ROS production and neutrophil counts at normal C-reactive protein (CRP) levels, which decreased under abnormal CRP levels. These findings suggest that the system can capture systemic inflammation in non-human primates and highlight the importance of monitoring leukocyte ROS production to understand inflammatory status. The difficulty of identifying subjective symptoms in veterinary medicine highlights the importance of technologies for easily and objectively monitor animals' physical conditions. Further analyses, including studies with larger animal populations and comparisons with conventional biomarkers, are needed to determine the specific inflammatory status reflected in leukocyte ROS production.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 2","pages":"162-173"},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12440673/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145080952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Poricoic acid a inhibits mitochondrial dysfunction in myocardial infarction by activating SIRT3.","authors":"Jinzhu Yin, Qu Jin, Zhaozheng Liu","doi":"10.3164/jcbn.24-208","DOIUrl":"10.3164/jcbn.24-208","url":null,"abstract":"<p><p>Acute myocardial infarction (MI) is the most severe clinical manifestation of ischemic heart disease. Despite this, the mechanisms that disrupt mitochondrial homeostasis and contribute to cardiomyocyte loss during MI are poorly understood, emphasizing the urgent need for new therapeutic interventions. Poricoic acid A (PAA), the principal active component of pachymaria, possesses a range of pharmacological effects. However, the specific role and mechanisms by which PAA addresses mitochondrial dysfunction in MI remain unclear. This study aims to elucidate the impact of PAA on MI and uncover its potential regulatory mechanisms. We developed MI cell models using mouse primary cardiomyocytes incubated in a Forma Steri-Cult chamber containing 1% oxygen, 94% nitrogen, and 5% carbon dioxide. Our results demonstrate that PAA significantly improves cardiomyocyte injury in hypoxia-induced mouse primary cardiomyocytes. Furthermore, PAA activates the AMP-activated protein kinase/peroxisome proliferator-activated receptor gamma coactivator 1-alpha/Sirtuin 3 (AMPK/PGC-1α/SIRT3) signaling pathway in hypoxia-induced mouse primary cardiomyocytes. PAA enhances the oxidative stress response in hypoxia-induced mouse primary cardiomyocytes by activating SIRT3. Additionally, it improves mitochondrial dysfunction in these cardiomyocytes and reduces apoptosis by activating SIRT3. In summary, PAA inhibits mitochondrial dysfunction associated with MI by activating SIRT3, indicating its promise as a therapeutic agent for MI.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 2","pages":"136-143"},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12440666/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145080923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relationship between serum pyridoxal 5'-phosphate concentration and cognitive function in older Japanese.","authors":"Kotaro Itoh, Akiko Kuwabara, Rei Otsuka, Taiki Sugimoto, Takashi Sakurai, Shumpei Niida, Misora Ao, Kiyoshi Tanaka, Shigeo Takenaka, Hiroaki Kanouchi","doi":"10.3164/jcbn.24-233","DOIUrl":"10.3164/jcbn.24-233","url":null,"abstract":"<p><p>Deficiency of pyridoxal 5'-phosphate (PLP) causes neurological abnormalities. The decline in blood PLP concentration has been associated with the onset of dementia, but no studies have been conducted on Japanese. This study aimed to determine the relationship between serum PLP concentration and Alzheimer's disease (AD) in older Japanese individuals. A total of 266 participants, 84 healthy participants, 87 participants with mild cognitive impairment (MCI), and 95 patients with AD were randomly selected from those who visited the National Center for Geriatrics and Gerontology for Longevity Sciences. Serum PLP concentration was significantly lower in the AD compared to the NC. Participants were divided into quartiles (Q1-Q4). The relationship between quartiles of serum PLP concentration and cognitive function was analyzed using logistic regression analyses adjusted with covariate factors (sex, age, number of applicable frailty evaluations, <i>APOE4</i>, educational level, albumin, homocysteine, vitamin B<sub>1</sub>, B<sub>12</sub>, and folate). The odds ratios (ORs) for MCI or AD were significantly lower for Q3 and Q4 compared to Q1, and the ORs (95% CI) for Q3 and Q4 were 0.40 (0.16-0.98) and 0.37 (0.13-0.99), respectively. Lower serum PLP concentration is independently related to the incidence of MCI or AD. Further research is needed to clarify the causal relationship.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"79-84"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326249/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"TFAP2C activates PTGES through the NOTCH3 signaling pathway to affect gefitinib resistance in lung adenocarcinoma.","authors":"Junmeng Xiao, Jianwei Cao, Lei Zhu, Jianbin Hou","doi":"10.3164/jcbn.24-104","DOIUrl":"10.3164/jcbn.24-104","url":null,"abstract":"<p><p>Lung adenocarcinoma (LUAD) is one of the primary culprits of cancer-related deaths. Current treatment modalities for LUAD have certain limitations, necessitating innovating effective LUAD treatment strategies. Prostaglandin E synthase (PTGES) and TF activating protein 2C (TFAP2C) in the process of drug resistance in LUAD are less studied and need further in-depth research. This study aimed to investigate the specific molecular mechanisms of PTGES and TFAP2C in gefitinib resistance in LUAD. The results indicated that PTGES and TFAP2C were considerably overexpressed in LUAD tissues and cells. Chromatin immunoprecipitation and dual luciferase assay validated that TFAP2C targeted the PTGES promoter region. In addition, gene set enrichment analysis results demonstrated the notable enrichment of PTGES in the NOTCH3 signaling pathway. Overexpression of PTGES remarkably enhanced the viability of PC-9/GR (gefitinib-resistant) cells and their response to gefitinib resistance, which was reversed by the addition of a NOTCH3 inhibitor. Furthermore, overexpressing PTGES upon the TFAP2C silence restored the great inhibition effect conferred by TFAP2C silence in PC-9/GR cells on cell viability and cell response to gefitinib resistance. This study confirmed that TFAP2C can transcriptionally activate PTGES through the NOTCH3 signaling pathway to enhance the response of LUAD cells to gefitinib resistance, proffering a new approach for the treatment of gefitinib resistance in LUAD cells.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326243/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Kurarinone activates the Nrf-2/HO-1 signaling pathway and alleviates high glucose-induced ferroptosis in HK2 cells.","authors":"Chunmei Ma","doi":"10.3164/jcbn.24-210","DOIUrl":"10.3164/jcbn.24-210","url":null,"abstract":"<p><p>To investigate the possible effects of Kurarinone on the ferroptosis and EMT of high glucose (HG)-stimulated HK2 cells, and uncover the mechanism. HK2 cells were treated with glucose to construct a DN cell model. CCK-8 and FCM assays exhibited the effects on growth as well as apoptosis of HK2 cells. DCF staining as well as Immunoblot assays exhibited the effects on ferroptosis. JC-1 staining exhibited the effects on mitochondrial function. Immunoblot assays showed the effects on the EMT process of HK2 cells. Immunoblot assays confirmed the mechanism. Kurarinone inhibited the apoptosis of HG-stimulated HK2 cells. It also blocked the ferroptosis of HG-stimulated HK2 cells. Further data showed that Kurarinone suppressed the mitochondrial damage in HG-stimulated HK2 cells, and restrained EMT process. Mechanically, Kurarinone activated the Nrf-2 pathway in HG-stimulated HK2 cells. Kurarinone activates the Nrf-2 pathway and alleviates HG-stimulated ferroptosis and EMT in HK2 cells.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"30-36"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326255/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum.","authors":"","doi":"10.3164/jcbn.24-178_Erratum2","DOIUrl":"10.3164/jcbn.24-178_Erratum2","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.3164/jcbn.24-178.].</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"99"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12380042/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144955814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simple method for estimating low muscle mass in persons with bioelectrical impedance analysis measurement difficulties.","authors":"Hirohito Sasaki, Osamu Yamamura, Hidenori Onishi, Hiromasa Tsubouchi, Yasutaka Mizukami, Masafumi Kubota, Ryouko Ikeda, Naohiro Konoshita, Tokuharu Tanaka, Takahiro Kishimoto, Koji Kobayashi, Hiroyuki Hayashi, Yasuhiro Nishiyama","doi":"10.3164/jcbn.25-13","DOIUrl":"10.3164/jcbn.25-13","url":null,"abstract":"<p><p>Bioelectrical impedance analysis cannot be used to measure muscle mass in some individuals. We aimed to determine cutoff values for low skeletal muscle mass index in sarcopenia diagnosis, based on the fat-free muscle mass index estimated using body fat percentage prediction equations, without relying on bioelectrical impedance analysis. The study included 564 residents from Wakasa, Fukui Prefecture, with a mean age of 76.0 ± 7.1 years. Body composition assessments using bioelectrical impedance analysis were conducted. Three prediction equations for body fat percentage (Ito <i>et al.</i>, Deurenberg <i>et al.</i>, and Gallagher <i>et al.</i>'s model for Asians) were applied. The cutoff value of the fat-free muscle mass index corresponding to low skeletal muscle mass index in sarcopenia diagnostic criteria was determined using receiver operating characteristic curves. Receiver operating characteristic curve analysis showed that the formula by Ito <i>et al.</i> yielded the highest area under the curve for estimating low skeletal muscle mass index in men, at 0.83. In women, the formulas by Ito <i>et al.</i> and Gallagher <i>et al.</i> performed similarly, each achieving an area under the curve of 0.779. The fat-free muscle mass index estimated using the body fat prediction formulas appear to be useful for screening low skeletal muscle mass index.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"91-98"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326252/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The revelation of UCHL1 in malignant epithelial cells of TNBC reinforcing cisplatin resistance by modulating ferroptosis based on single-cell transcriptome data.","authors":"Huan Li, Shaojun Chen, Haiqin Hou, Zhuoying Li, Yiming Zhang, Wenxia Zhang","doi":"10.3164/jcbn.24-206","DOIUrl":"10.3164/jcbn.24-206","url":null,"abstract":"<p><p>Chemotherapy resistance is a key obstacle in the treatment of triple-negative breast cancer (TNBC). Single-cell RNA sequencing (scRNA-seq) plays a pivotal part in revealing the mechanism of drug resistance in tumors. This work aimed to explore the molecular events driving TNBC resistance based on scRNA-seq data. Breast cancer (BC) scRNA-seq data GSE176078 was sourced from the GEO database. Nine TNBC samples were analyzed. The cellular composition and differentially expressed genes of TNBC were clarified through dimension reduction, clustering, and cell annotation. Drug-resistant and sensitive epithelial cell clusters in malignant epithelial cells were identified, with their heterogeneity analyzed. Key genes driving drug-resistant epithelium were screened and KEGG enrichment analysis was undertaken. The expression of Ubiquitin Carboxy-Terminal Hydrolase L1 (UCHL1) in TNBC was examined. The effect and molecular mechanism of UCHL1 on cisplatin (CDDP) resistance in TNBC was confirmed by constructing CDDP-resistant cell lines. We successfully identified resistant and sensitive cell clusters in malignant epithelial cells of TNBC and screened for the greatly upregulated gene UCHL1 in the resistant epithelium. KEGG analysis revealed its enrichment in the ferroptosis signaling pathway. Further analyses demonstrated the upregulation of UCHL1 in CDDP-resistant TNBC cells. Knocking down UCHL1 potentiated the sensitivity of TNBC cells to CDDP treatment and reinforced ferroptosis. The ferroptosis inhibitor Ferrostatin-1 reversed the inhibitory effect of UCHL1 knockdown on CDDP resistance. UCHL1 reinforces CDDP resistance in TNBC by suppressing ferroptosis. The study brings new insights into the drug-resistance mechanism of TNBC.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"18-29"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sanguinarine attenuates hypoxia/reoxygenation-triggered H9c2 cell injury through activation of the Nrf2/NLRP3 pathway.","authors":"Bo Qiu, Xin Li, Wenna Wang","doi":"10.3164/jcbn.24-235","DOIUrl":"10.3164/jcbn.24-235","url":null,"abstract":"<p><p>Myocardial ischemia/reperfusion injury (MI/RI) is a prevalent condition encountered by many patients with ischemic heart disease, which can badly influence the health of patients and even do harm their lives. Sanguinarine (SA), one active ingredient separated from the poppy family, and exhibits anti-oxidant, anti-tumor, and anti-inflammation properties. However, the precise regulatory impacts and associated mechanisms of SA in the progression of MI/RI remain largely elusive. In this study, firstly, H9c2 cells were treated by hypoxia/reoxygenation (HR) to mimic MI/RI cell model. It was uncovered that SA strengthened HR-mediated cell viability of H9c2 cells. Following HR treatment, there was an increase in the production of inflammatory markers (TNF-α, IL-1β, and IL-6), whereas this effect was mitigated after SA treatment. The oxidative stress was heightened after HR treatment, but this phenomenon was offset after SA treatment. SA activated the Nrf2/NLRP3 pathway and relieved proptosis. At last, through rescue assays, it was demonstrated that SA improved HR-triggered inflammation and oxidative stress through Nrf2 pathway. SA also modulated HR-triggered cell viability, inflammation, and oxidative stress in rat primary cardiomyocytes. In summary, our findings indicate that SA protects against HR-induced H9c2 cell injury through activation of the Nrf2/NLRP3 pathway. This discovery suggests that SA may be one helpful drug for ameliorating MI/RI.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"37-44"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326247/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Seven days of piceatannol supplementation exerted no effect on fat metabolism at rest, during and after exercise.","authors":"Nobukazu Kasai, Kanon Hayashi, Masaki Kito, Takuma Morishima","doi":"10.3164/jcbn.25-2","DOIUrl":"10.3164/jcbn.25-2","url":null,"abstract":"<p><p>Piceatannol is a type of polyphenol that is abundantly obtained from passion fruit. The present study aimed to determine the effect of 7 days of piceatannol supplementation on fat metabolism at rest, during and after low-intensity aerobic exercise. This randomized, double-blind, and crossover study included eight physically active male participants. The participants completed two experimental trials: placebo and piceatannol. They ingested either a placebo or piceatannol tablets containing 0 or 10 mg of piceatannol for seven consecutive days. The participants visited the laboratory at 8:00 am after seven days. In the following baseline measurements, the participants performed 60 min of pedaling exercise at 30% of their maximum oxygen uptake. Respiratory gas and blood samples were collected before, during, and after the exercise. No significant differences were found between the trials in oxygen uptake, carbon dioxide output, ventilation, and respiratory exchange ratio either at rest and during and after exercise. Similarly, serum growth hormone, cortisol, insulin, free fatty acid, glycerol, acetoacetic acid, 3-hydroxybutyric acid, and ketone body responses exhibited no significant differences between trials. These results indicate that the 7-day piceatannol supplementation did not promote fat metabolism at rest and during and after low-intensity aerobic exercise.</p>","PeriodicalId":15429,"journal":{"name":"Journal of Clinical Biochemistry and Nutrition","volume":"77 1","pages":"85-90"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326246/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}