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Lawlor K, Clausen J, Johnston A, Edge A, Wolff K, Castrignanò E, Couchman L. A review of analytical parameters in 'rapid' liquid chromatographic methods for bioanalysis: Can we do better? J Chromatogr A 2024; 1721:464803. [PMID: 38547680 DOI: 10.1016/j.chroma.2024.464803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 02/22/2024] [Accepted: 03/06/2024] [Indexed: 04/13/2024]
Abstract
Rapid bioanalysis is beneficial to many applications. However, how 'rapid' a method is, or could be, is often an unanswered question. In this statistical review, the authors have assessed multiple pre-analytical (i.e. sample preparation), and analytical method parameters specifically for liquid chromatography to assist researchers in developing and validating 'rapid' bioanalytical methods. We restricted the search to urine and plasma matrices only. Data were extracted from over 2,000 recent studies and evaluated to assess how these parameters affected the 'on-instrument' analysis time. In addition to methods using ultra-violet (UV) detection, there were a large number of mass spectrometric (MS) methods, allowing additional review of the differences between high- and low-resolution MS on analysis time. We observed that most (N = 922, 70 %) methods used 5 or 10 cm columns, and that whilst uptake of ultra-high performance (U)HPLC columns was good, the use of sub-5 cm columns and/or flow rates in excess of 1 mL/min was incredibly rare (N = 25, 3 %). The detector of choice for quantitative (U)HPLC-MS remains the triple quadrupole, although a number of groups report the use of high-resolution MS for such methods.
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Affiliation(s)
- K Lawlor
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, SE1 9NH, UK; Analytical Services International, St. George's University of London, Cranmer Terrace, London, SW17 0RE, UK.
| | - J Clausen
- Analytical Services International, St. George's University of London, Cranmer Terrace, London, SW17 0RE, UK
| | - A Johnston
- Analytical Services International, St. George's University of London, Cranmer Terrace, London, SW17 0RE, UK
| | - A Edge
- Avantor Sciences, The Markham Centre, Station Road, Theale, Reading, RG7 4PE
| | - K Wolff
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, SE1 9NH, UK; Drug Control Centre, King's College London, London, SE1 9NH, UK
| | - E Castrignanò
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, SE1 9NH, UK; Drug Control Centre, King's College London, London, SE1 9NH, UK
| | - L Couchman
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, SE1 9NH, UK; Analytical Services International, St. George's University of London, Cranmer Terrace, London, SW17 0RE, UK
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An J, Fan L, Zhi X, Dong Z. Quantification of sedative-hypnotics in human urine and plasma via polystyrene-based solid phase extraction-LC-MS/MS analysis. J Pharm Biomed Anal 2023; 236:115753. [PMID: 37776626 DOI: 10.1016/j.jpba.2023.115753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/06/2023] [Accepted: 09/24/2023] [Indexed: 10/02/2023]
Abstract
Owing to the adverse effects of the overuse of common sedative-hypnotics on human health, the development of an efficient analytical method for the detection of drugs in clinical emergencies and forensic science is significant. Although conventional analytical methods, such as immunoassay, liquid chromatography (LC), gas chromatography, and mass spectrometry (MS) are reliable, they exhibit drawbacks such low-throughput screening and high costs. Thus, in this study, we developed a novel high-throughput method consisting of a polystyrene-based solid phase extraction (SPE) and an LC with tandem MS analysis for the detection of drugs in biological samples and investigated its precision and reliability via the detection of twelve sedative-hypnotics in human urine and plasma samples. Good linear relationship (r ≥ 0.99) were achieved within the concentration range of 0.1-20 ng/mL for the 12 analytes in urine samples. Whereas, in the plasma samples, the correlation coefficient was greater than 0.99 in the concentration range 1-100 ng/mL for lorazepam and clonazepam and in the range 0.5-100 ng/mL for the remaining analytes. The intra- and inter-day precision, autosampler and freeze-thaw stabilities, and lower limit of quantitation (LLOQ) for all twelve analytes in the urine and plasma samples were favorable. Furthermore, sedative-hypnotics were detected in clinical samples obtained from the Hebei General Hospital using this method. These results indicated that the analytical method proposed in this study can be effectively applied in toxicology screening and drug abuse monitoring.The method developed in this study could be applied in clinical and forensic toxicology laboratories for sedative-hypnotic drug screening, providing support for drug abuse monitoring and clinical diagnosis.
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Affiliation(s)
- Jing An
- Department of Pharmacy, Hebei General Hospital, Shijiazhuang 050051, PR China
| | - Liju Fan
- Department of Pharmacy, Hebei General Hospital, Shijiazhuang 050051, PR China
| | - Xuran Zhi
- Department of Pharmacy, Hebei General Hospital, Shijiazhuang 050051, PR China
| | - Zhanjun Dong
- Department of Pharmacy, Hebei General Hospital, Shijiazhuang 050051, PR China.
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Park JI, Kang C, Jeong W, Soo Park J, You Y, Joon Ahn H, Cho Y, Young Jeon S, Hong Min J, Nam In Y. Time-course relationship between cerebrospinal fluid and serum concentrations of midazolam and albumin in patients with cardiac arrest undergoing targeted temperature management. Resuscitation 2023:109867. [PMID: 37302686 DOI: 10.1016/j.resuscitation.2023.109867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/13/2023]
Abstract
AIM To understand the serum and cerebrospinal fluid (CSF) distribution of midazolam is important for proper timing of neurological prognostication of targeted temperature management(TTM) patients. Midazolam binds extensively to albumin in serum although non protein bound form exist in CSF. We investigated the time-course of CSF, serum concentrations of midazolam and albumin in patients with cardiac arrest who underwent TTM. METHODS This prospective, single-center, observational study was conducted between May 2020 and April 2022. Midazolam and albumin concentrations in CSF and serum were quantified 0, 24, 48, and 72 h after the return of spontaneous circulation for comparison between the good (Cerebral Performance Category (CPC) 1 and 2) and poor (CPC 3, 4, and 5) neurologic outcome groups. The CSF/serum (C/S) ratios of midazolam and albumin concentrations were determined, along with their correlation coefficients. RESULTS Of the 19 enrolled patients, 13 experienced poor outcomes. At 0 h, serum midazolam concentrations were the lowest, whereas serum albumin levels were the highest; in the CSF, the concentrations of both peaked at 24 h. There were no significant inter-group differences in midazolam concentrations in CSF or serum. The C/S ratios of midazolam and albumin significantly differed between the groups. Moderate to strong positive correlations were observed between the midazolam and albumin C/S ratios. CONCLUSION In CSF, midazolam and albumin concentrations peaked 24 h post-cardiac arrest. Midazolam and albumin C/S ratios were significantly higher in the poor outcome group and positively correlated with each other, suggesting blood-brain barrier disruption 24 h post-cardiac arrest.
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Affiliation(s)
- Jong-Il Park
- Department of Biochemistry, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea
| | - Changshin Kang
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea; Department of Emergency Medicine, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea
| | - Wonjoon Jeong
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea; Department of Emergency Medicine, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea.
| | - Jung Soo Park
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea; Department of Emergency Medicine, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea
| | - Yeonho You
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea
| | - Hong Joon Ahn
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea; Department of Emergency Medicine, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea
| | - Yongchul Cho
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea
| | - So Young Jeon
- Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea
| | - Jin Hong Min
- Department of Emergency Medicine, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea; Department of Emergency Medicine, Chungnam National University Sejong Hospital, 20, Bodeum 7- ro, Sejong, Republic of Korea
| | - Yong Nam In
- Department of Emergency Medicine, College of Medicine, Chungnam National University, 282, Mokdong-ro, Jung-gu, Daejeon, Republic of Korea; Department of Emergency Medicine, Chungnam National University Sejong Hospital, 20, Bodeum 7- ro, Sejong, Republic of Korea
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An J, Wang X, Song H, Zhao T, Ren H, Kang W, Dong Z, Niu L, Shi H. Simultaneous determination of four sedative-hypnotics in human urine based on dendritic structured magnetic nanomaterials. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Xu D, Ji J, Xiang P, Yan H, Shen M. Two DFSA cases involving midazolam clarified by the micro-segmental hair analyses. Forensic Toxicol 2022; 40:374-382. [PMID: 36454413 DOI: 10.1007/s11419-022-00621-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/23/2022] [Indexed: 01/26/2023]
Abstract
PURPOSE In this study, an analytical procedure to identify trace amounts of drug in hair based on micro-segmental hair analysis was presented. The method also can be used to estimate the time of drug ingestion at daily precision by cutting a single hair into sub-millimeter segments which correspond to daily hair growth. METHODS A method was established for efficient extraction of midazolam, one of the most frequently detected compound in drug-facilitated sexual assault (DFSA) cases, from each 0.4-mm hair segment and validated by ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS). Moreover, two DFSA cases were used to compare the micro-segmental hair analysis with the 1- cm segmental analysis method. RESULTS The validation showed a lower limit of quantification of 0.5 pg/mm for midazolam, with intraday and interday accuracies (bias) from - 5.2 to 0.9%. The micro-segmental hair analysis method was applied to proximal 1-cm hair segment including hair bulbs in two DFSA cases. The micro-segmental hair analysis results in case 1 showed midazolam in the S15-S17 (5.6-6.8 mm from hair bulb) in a concentration range from 0.5 to 0.9 pg/mm, and the concentrations of midazolam in all hair micro-segments (0-1 cm from the scalp) in case 2 were from 0.5 to 2.0 pg/mm. CONCLUSIONS Comparison with the conventional method revealed that micro-segmental hair analysis may enhance the utility of hair drug testing and strengthen probative force in DFSA cases.
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Affiliation(s)
- Duoqi Xu
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, 200063, China
| | - Jiaojiao Ji
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, 200063, China.,Department of Forensic Medicine of Shanghai Medical College, Fudan University, 138 Medical College Road, Shanghai, 200433, China
| | - Ping Xiang
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, 200063, China
| | - Hui Yan
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, 200063, China
| | - Min Shen
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, 200063, China.
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Extending the viability of human precision-cut intestinal slice model for drug metabolism studies. Arch Toxicol 2022; 96:1815-1827. [PMID: 35428896 PMCID: PMC9095520 DOI: 10.1007/s00204-022-03295-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/24/2022] [Indexed: 11/09/2022]
Abstract
Human Precision-cut intestinal slices (hPCIS) are used to study intestinal physiology, pathophysiology, drug efficacy, toxicology, kinetics, and metabolism. However, the use of this ex vivo model is restricted to approximately a 24 h timeframe because of declining viability of the hPCIS during traditional culture. We hypothesized that we could extend the hPCIS viability by using organoid medium. Therefore, we cultured hPCIS for up to 72 h in organoid media [expansion medium (Emed) and differentiation medium (Dmed)]. After incubation, we assessed culture-induced changes on viability markers, specific cell type markers and we assessed the metabolic activity of enterocytes by measuring midazolam metabolite formation. We show that the adenosine triphosphate (ATP)/protein ratio of Emed-cultured hPCIS and morphology of both Emed- and Dmed-cultured hPCIS was improved compared to WME-cultured hPCIS. Emed-cultured hPCIS showed an increased expression of proliferation and stem cell markers, whereas Dmed-cultured hPCIS showed an increased expression of proliferation and enterocyte markers, along with increased midazolam metabolism. Using the Emed, the viability of hPCIS could be extended for up to 72 h, and proliferating stem cells remained preserved. Using Dmed, hPCS also remained viable for up to 72 h, and specifically rescued the metabolizing enterocytes during culture. In conclusion, by using two different organoid culture media, we could extend the hPCIS viability for up to 72 h of incubation and specifically steer stem cells or enterocytes towards their original function, metabolism, and proliferation, potentially allowing pharmacokinetic and toxicology studies beyond the 24 h timeframe.
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