{"title":"Lipidomic profiling of the febrile rat hypothalamus by the intervention of Artemisia japonica extracts.","authors":"Xiaodong Zhang, Suqing Zhao, Yuxue Ma, Wen Kang, Wenbin Zhou, Chen Zhang, Zeper Abliz","doi":"10.1016/j.jpba.2024.116588","DOIUrl":"https://doi.org/10.1016/j.jpba.2024.116588","url":null,"abstract":"<p><p>Artemisia species have been regarded as an important source of ethnic medicinal plants, such as A. annua and A. capillaris, both of which are widely used in clinical treatment. The clinical efficacy of A. japonica is similar to that of A. capillaris, but fewer pharmaceutical studies have been reported. Given that the extracts of A. japonica were observed to reduce the rectal temperature of febrile rats induced by LPS, this study was designed to demonstrate this regulatory effect of the extracts, with a particular focus on the lipidomic profiling of the febrile rat hypothalamus. A total of 72 differential metabolites were filtered out and the association between lipid profiling and potential mechanism was explored. Sphingolipid, glycerophospholipid, arachidonic acid and ether lipid metabolism pathways were significantly enriched. TNF-α, IL-6 and PGE<sub>2</sub> cytokines in the hypothalamus were significantly downregulated by the intervention of the extracts of A. japonica. Enzymatic reaction enrichment analysis suggested that PEMT and COX-2 might be potential targets of the efficacy, and which were testified to be downregulated by the ELISA assay under the extracts intervention.</p>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"255 ","pages":"116588"},"PeriodicalIF":3.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142791767","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}
Lu Turković, Zvonimir Mlinarić, Mila Lovrić, Tajana Silovski, Biljana Nigović, Miranda Sertić
{"title":"Three sample preparation methods for clinical determination of CDK4/6 inhibitors with endocrine therapy in breast cancer patient plasma using LC-MS: Cross-validation (red), ecological (green) and economical (blue) assessment.","authors":"Lu Turković, Zvonimir Mlinarić, Mila Lovrić, Tajana Silovski, Biljana Nigović, Miranda Sertić","doi":"10.1016/j.jpba.2024.116586","DOIUrl":"https://doi.org/10.1016/j.jpba.2024.116586","url":null,"abstract":"<p><p>Cyclin D-dependent kinase 4/6 inhibitors palbociclib, ribociclib and abemaciclib, in combination with aromatase inhibitors anastrozole and letrozole or oestrogen receptor degrader fulvestrant, are being assessed as candidates for therapeutic drug monitoring. An ideal bioanalytical method for their determination in patient plasma samples is therefore of high interest, as there is no routine reference method yet available in the clinical practice. In this work, three sample preparation approaches - dispersive liquid-liquid microextraction (DLLME), solid-phase extraction (SPE), and newly developed phospholipid removal (PLR) for LC-MS determination of these six drugs are comprehensively assessed. The methods are validated in the clinically relevant linear ranges with remarkable precision (RSD ≤6.9 %) and accuracy (bias -13.6 - 11.8 %). To compare the procedures in a real-world setting, they are applied on 38 samples from breast cancer patients. The differences between paired results are below 20 % for more than 92 % of the repeats and the RSD is ≤13.1 % between the corresponding results. Statistical comparison of the results reveals excellent overall agreement between the methods (Lin's concordance correlation coefficient ≥0.9969, maximal Bland-Altman bias 6.3 %). DLLME proved to be the most ecologically acceptable method due to the high degree of miniaturisation (AGREEprep score 0.44), PLR enabled very high sample throughput and cost-effectiveness (BAGI 72.5), while SPE showed the best analytical performance (redness score 100). All three methods are suitable for their designated purpose, and the choice of the ideal method can be made based on the scope of application, available funds and equipment and desired ecological footprint.</p>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"255 ","pages":"116586"},"PeriodicalIF":3.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142770021","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}
Jinxuan Chai , Yan Wang , Sifan Guo , Zhibo Wang , Hongwei Chen , Xian Wang , Dandan Xie , Ying Cai , Shiwei Wang , Zhencai Hu , Aihua Zhang , Shi Qiu
{"title":"Proteomics exploration of metformin hydrochloride for diabetic kidney disease treatment via the butanoate metabolism pathway","authors":"Jinxuan Chai , Yan Wang , Sifan Guo , Zhibo Wang , Hongwei Chen , Xian Wang , Dandan Xie , Ying Cai , Shiwei Wang , Zhencai Hu , Aihua Zhang , Shi Qiu","doi":"10.1016/j.jpba.2024.116584","DOIUrl":"10.1016/j.jpba.2024.116584","url":null,"abstract":"<div><div>Diabetic nephropathy (DKD) is a diabetesrelated kidney injury with an increasing incidence every year. Metformin hydrochloride (MET), a cornerstone treatment for glucose lowering, has been widely reported for the treatment of DKD, but the specific molecular mechanisms and potential therapeutic targets still need to be further explored. We used kidney tissues from db/db mice as samples and used proteomics and bioinformatics to analyse the function, distribution and related pathways of differential proteins in DKD, focusing on the assessment of the binding energies of key proteins in the butyrate pathway and drugs at the molecular level, which showed that the expression profiles of differential proteins in kidney tissues were altered after MET treatment, involving energy metabolism. The key proteins involved in the butanoate metabolism pathway, including AACS, ACSM3, EHHADH and HMGCS2, exhibit binding energies to MET of <-5 kcal. It is therefore plausible that MET treatment may affect the butanoate metabolism pathway, potentially ameliorating the progression of DKD by modulating mitochondrial function and inflammatory responses.</div></div>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"254 ","pages":"Article 116584"},"PeriodicalIF":3.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746018","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}
Fangqi Cao, Shuchen Yu, Xiujuan Chen, Lu Xiao, Tingting Qiu, Xiru Wang, Daiwen Zhang, Xiaoliang Yuan, Ping Shi
{"title":"Identification and pharmacological properties of 2-(1H-indazole-3-carboxamido)-3,3-dimethylbutanoate (MDMB-INACA), N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1H-indazole-3-carboxamide (ADB-INACA), and N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-hexyl-1H-indazole-3-carboxamide (ADB-HINACA).","authors":"Fangqi Cao, Shuchen Yu, Xiujuan Chen, Lu Xiao, Tingting Qiu, Xiru Wang, Daiwen Zhang, Xiaoliang Yuan, Ping Shi","doi":"10.1016/j.jpba.2024.116566","DOIUrl":"https://doi.org/10.1016/j.jpba.2024.116566","url":null,"abstract":"<p><p>Synthetic cannabinoids (SCs) are an evolving class of new psychoactive substances (NPS) with structurally various compounds that are increasing over the past few years. Therefore, they are initially hard to identify because of the lack of analytical information. Moreover, there is little to no information regarding the pharmacology of these compounds despite human abuse. In the present study, gas chromatography-mass spectrometry (GC-MS), ultrahigh-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF MS), and nuclear magnetic resonance (NMR) spectroscopy were used to identify the structure of three compounds obtained from seized materials. The pharmacological properties of these compounds were evaluated by subsequent behavioral testing, including von Frey and cold allodynia tests. The results indicated that these compounds were determined to be 2-(1H-indazole-3-carboxamido)-3,3-dimethylbutanoate (MDMB-INACA), N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1H-indazole-3-carboxamide (ADB-INACA), and N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-hexyl-1H-indazole-3-carboxamide (ADB-HINACA) via GC-MS, UPLC-Q-TOF MS and NMR analysis, and they can attenuate mechanical and cold allodynia induced by paclitaxel in rats with peripheral neuropathy. Compared with MDMB-INACA and ADB-HINACA, ADB-INACA showed better analgesic effects on paclitaxel-induced peripheral neuropathy (PIPN) in rats, and its effect was similar to that of the positive drug N'-(1-hexyl-2-oxoindolin-3-ylidene) benzohydrazide (MDA-19).</p>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"255 ","pages":"116566"},"PeriodicalIF":3.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142770019","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}
Ling Lin , Shuo Wang , Kang Wang , Zhe Zhao , Gang Li
{"title":"A multi-band spectral data fusion method for improving the accuracy of quantitative spectral analysis","authors":"Ling Lin , Shuo Wang , Kang Wang , Zhe Zhao , Gang Li","doi":"10.1016/j.jpba.2024.116585","DOIUrl":"10.1016/j.jpba.2024.116585","url":null,"abstract":"<div><div>The signal-to-noise ratio of the spectrum is a critical determinant of detection accuracy in compositional analysis utilizing spectroscopy. The spectral data acquired by the spectrometer, while intended to capture essential sample characteristics, is often interspersed with various noise interferences. This contamination can severely disrupt the integrity of measurement outcomes. Therefore, this paper proposes the \"multi-band spectral data fusion\" method. In order to verify the feasibility of this method, this paper takes blood detection based on dynamic spectroscopy as an example and develops two models for each of the various components in blood. The experimental results show that when compared to modeling the raw spectrum data of the samples directly, the prediction accuracy of the model constructed using the new spectra processed by the multi-band spectral data fusion method suggested in this paper is greater. The correlation coefficient of the hemoglobin prediction set has improved by 13.48 %, and the root mean square error has decreased by 21.00 %. The correlation coefficient of the blood glucose prediction set improved by 4.07 %, and the root mean square error decreased by 12.78 %. The result demonstrates that the proposed method effectively mitigates the impact of random errors without compromising the spectral information content. The approach is not limited to blood component analysis but has potential applications across diverse spectroscopic domains, providing new ideas and methods for improving the accuracy of quantitative spectroscopic analysis.</div></div>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"254 ","pages":"Article 116585"},"PeriodicalIF":3.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746020","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}
Soumya Kandi, Sarah Blink Polakow, John P Savaryn, Kenneth Ruterbories, Mary Saltarelli, Gary J Jenkins, Qin C Ji
{"title":"High throughput bioanalysis of serum 7a-hydroxy-4-cholesten-3-one (C4) using LC-MS/MS: Devising an end-to-end single vial solution for a sample limited application.","authors":"Soumya Kandi, Sarah Blink Polakow, John P Savaryn, Kenneth Ruterbories, Mary Saltarelli, Gary J Jenkins, Qin C Ji","doi":"10.1016/j.jpba.2024.116581","DOIUrl":"https://doi.org/10.1016/j.jpba.2024.116581","url":null,"abstract":"<p><p>Crohn's disease (CD) is characterized by chronic ileal/ileocolonic inflammation, and in some cases, can result in bile acid malabsorption (BAM) and subsequent bile acid diarrhea (BAD). Although BAD is common in CD, diagnosis is difficult. In patients with CD who had ileal resection (IR), elevated serum 7a-hydroxy-4-cholesten-3-one (C4), a cholesterol-derived stable intermediate in bile acid synthesis, is associated with diarrhea attributable to BAM and therefore, may have diagnostic utility. The previously existing validated methodology to measure C4 in human serum required 100 μL with an analytical range of 0.5-100 ng/mL, making it incompatible with the clinical trial sample set we had available for analysis due to limited serum volume and an extended assay range requirement (up-to 1 μg/mL). We present here a simplified, end-to-end single vial approach performed in a 96-well format for clinical sample C4 analysis for application in sample limited settings.</p>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"255 ","pages":"116581"},"PeriodicalIF":3.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142791746","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}
Ruoxuan Sun, Janey Ronxhi, Xuemei Yang, Mark G. Qian, Xiaobin Zhang
{"title":"Feasibility of a direct binding electrochemiluminescence assay to detect anti-drug antibodies against therapeutic peptides","authors":"Ruoxuan Sun, Janey Ronxhi, Xuemei Yang, Mark G. Qian, Xiaobin Zhang","doi":"10.1016/j.jpba.2024.116582","DOIUrl":"10.1016/j.jpba.2024.116582","url":null,"abstract":"<div><div>The emergence of anti-drug antibodies (ADAs) poses significant impacts on the bioactivity and toxicity of biotherapeutics including proteins and peptides. Developing reliable assays to monitor the magnitudes of ADAs in blood samples is therefore considered a crucial task in animal and human studies throughout the development of biotherapeutics. Peptides represent a significant and fast-growing category of biotherapeutics for the management of a variety of indications. While peptides generally exhibit lower immunogenicity risks compared to biologics of larger sizes, drug developers are still required to conduct the risk-based immunogenicity assessment as mandated by the regulatory authorities. To address the need for efficient detection of ADAs against therapeutic peptides, we established a straightforward electrochemiluminescence immunoassay (ECLIA) based on direct binding strategy. Our assay demonstrates its applicability across various peptide therapeutics including marketed drugs and internal investigational compounds. Through stepwise tuning of the assay procedure, we identified several key factors such as buffer, detection reagent, plate type, and conjugation strategy that collectively contribute to the assay performance. Depending on the drug molecule and positive control antibody, the assay can achieve low single-digit to two-digit ng/ml sensitivity and ideal drug tolerance. In conclusion, this ECLIA platform presents a valuable and generic tool to expedite the development and validation of ADA assays for peptide-based therapeutics.</div></div>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"254 ","pages":"Article 116582"},"PeriodicalIF":3.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746019","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}
{"title":"Application of bifunctional monomer surface MIP with MOFs nanocomposite for efficient trapping and analysis of luteolin in compound Anoectochilus roxburghii (Wall.) Lindl. oral liquid.","authors":"Qiuhua Zhang, Youjia Wu, Pingping Wu, Liying Huang, Lingyi Huang","doi":"10.1016/j.jpba.2024.116579","DOIUrl":"https://doi.org/10.1016/j.jpba.2024.116579","url":null,"abstract":"<p><p>Luteolin is one of the bioactive components from the compound Anoectochilus roxburghii (Wall.) Lindl. oral liquid (CAROL), which was reported to have excellent hepatoprotective and anti-inflammatory activities. However, the enrichment and quantitation of luteolin from CAROL is challenging due to the low content and complex aqueous matrix. In this study, a bifunctional monomer surface molecularly imprinted polymer (MIP) with metal-organic frameworks (MOFs) as cores was prepared for the selective adsorption of luteolin from the aqueous system CAROL. Compared with conventional MIPs, this unique nanocomposite adsorbent (MOF@MIPs) has the advantages of short kinetic equilibrium time, good selectivity, and high adsorption capacity in aqueous solution. The theoretical maximum adsorption capacity of MOF@MIPs for luteolin was 36.99 mg/g. After adsorption enrichment of luteolin from CAROL using MOF@MIPs, liquid chromatography-tandem mass spectrometry was applied to analyze the target. The corresponding linearity range for analyte was 10-6000 ng/mL with good linearity (R<sup>2</sup> =0.9992), and the added recoveries varied from 85.70 % to 99.25 %. The present method has been successfully employed for the analysis of luteolin in five different batches of CAROL. Notably, we found no significant difference in the content of luteolin between these batches, which proved that the composition was stable between batches. The novel structure MIPs are suitable for the specific recognition of template molecules in aqueous solution. Therefore, this study provides a technical reference for the special identification and determination of trace components in complex samples, while the novel MOF@MIP nanocomposite can also provide valuable references for the extraction and purification methods of specific substances in traditional Chinese medicine and expand the application environment of MIPs material.</p>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"255 ","pages":"116579"},"PeriodicalIF":3.1,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142786090","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}
Isabella Sant’Anna, Rafaella Silva Arêdes, Walter Claudino P. de Souza, Renato Corrêa da Silva Lessa, Marcela Cristina de Moraes
{"title":"Development of an immobilized Mycobacterium tuberculosis purine nucleoside phosphorylase platform for ligand fishing and inhibition assays","authors":"Isabella Sant’Anna, Rafaella Silva Arêdes, Walter Claudino P. de Souza, Renato Corrêa da Silva Lessa, Marcela Cristina de Moraes","doi":"10.1016/j.jpba.2024.116576","DOIUrl":"10.1016/j.jpba.2024.116576","url":null,"abstract":"<div><div>Purine nucleoside phosphorylase (PNP) from <em>Mycobacterium tuberculosis</em> (<em>Mt</em>PNP) plays a crucial role in purine metabolism, making it an attractive target for developing new tuberculosis treatments. In this study, we developed a ligand screening platform using <em>Mt</em>PNP covalently immobilized on magnetic particles (<em>Mt</em>PNP-MPs). The immobilization process achieved a high enzyme loading and preserved the enzyme catalytic activity, enabling its use in both activity and affinity-based screening assays. The activity of <em>Mt</em>PNP-MPs was monitored by quantifying hypoxanthine released from inosine phosphorolysis, and kinetic studies revealed Michaelis-Menten behavior for inosine and inorganic phosphate substrates, with <em>K</em><sub>M</sub> values comparable to those of free <em>Mt</em>PNP. A proof-of-concept inhibitor study using the transition state analog DI4G demonstrated the platform capability for recognizing and characterizing inhibitors, yielding an IC<sub>50</sub> value of 91.4 nM and a competitive inhibition mechanism with a <em>K</em><sub>i</sub> of 69.2 nM. Furthermore, the <em>Mt</em>PNP-MPs exhibited high stability, retaining over 80 % of their activity after six months of storage and more than 90 % after five consecutive reaction cycles, highlighting their potential for reuse in high-throughput assays. We optimized key parameters for ligand fishing assay, including the amount of <em>Mt</em>PNP-MPs, incubation time, and elution conditions. While higher organic solvent concentrations and longer elution times improved ligand isolation, these conditions also reduced enzyme activity. This trade-off between ligand isolation yield and enzyme reusability suggests that elution conditions should be tailored based on the ligand binding strength. Overall, this study establishes the <em>Mt</em>PNP-MPs platform as a versatile tool for ligand identification and inhibitor characterization, with promising applications in the screening of complex libraries, such as natural products, for bioactive compounds.</div></div>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"254 ","pages":"Article 116576"},"PeriodicalIF":3.1,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701985","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}
Yanan Guo , Shuang Cao , Bin Geng , Juanjuan Ma , Bo Yao
{"title":"Determination of sacubitril and seven sartan drugs in serum samples by online solid phase extraction-liquid chromatography-tandem mass spectrometry","authors":"Yanan Guo , Shuang Cao , Bin Geng , Juanjuan Ma , Bo Yao","doi":"10.1016/j.jpba.2024.116580","DOIUrl":"10.1016/j.jpba.2024.116580","url":null,"abstract":"<div><div>An online solid phase extraction–ultra performance liquid chromatography–tandem mass spectrometry detection method was developed for the simultaneous determination of sacubitril and seven sartan drugs in blood serum in this study. The compounds were separated through a C<sub>18</sub> column. Mass spectrometry of the samples was performed using a jet stream electrospray ion source (AJS, ESI+). The samples were detected via a multiple reaction monitoring (MRM) mode and quantified via a stable isotope internal standard method. 900 μL of prepared sample was injected and a run time of 12.5 minutes was obtained in this proposed method. The eight examined target compounds showed good linearity (<em>r</em><sup>2</sup>>0.994) in the corresponding mass concentration range and a lower limit of quantitation (LLOQ) was in the range of 0.05–0.1 μg/L. The recovery of the spiked serum samples ranged from 90.90 % to 106.20 % with relative standard deviations (RSDs) of 4.57 %–9.27 %. Five target compounds were detected in the actual serum samples using this method. The proposed method is simple to use, sensitive, accurate, and suitable for the trace detection of sacubitril and seven sartan drugs present in serum samples. The method can meet the needs for clinical monitoring of blood concentrations of this type of drug, while providing detection technology support for the development of compound preparations of sacubitril and other sartan drugs.</div></div>","PeriodicalId":16685,"journal":{"name":"Journal of pharmaceutical and biomedical analysis","volume":"254 ","pages":"Article 116580"},"PeriodicalIF":3.1,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701983","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}