PMID- 35772235 OWN - NLM STAT- MEDLINE DCOM- 20220816 LR - 20220816 IS - 1873-264X (Electronic) IS - 0731-7085 (Linking) VI - 219 DP - 2022 Sep 20 TI - High-resolution mass spectrometry assay for quantifying ceramides and dihydroceramides in the cerebrospinal fluid from patients who experienced intracranial infection after craniotomy. PG - 114907 LID - S0731-7085(22)00328-4 [pii] LID - 10.1016/j.jpba.2022.114907 [doi] AB - Ceramides (CERs) and dihydroceramides (dhCERs) are biologically active lipids involved in cell proliferation, differentiation, and apoptosis, as well as associated with infectious diseases. The concentration of CERs and dhCERs in the cerebrospinal fluid (CSF) could potentially allow the distinction of patients with intracranial infection (ICI) after craniotomy from controls, but the quantification is limited by their ultralow concentrations. Therefore, a novel high performance liquid chromatography-triple-quadrupole/time-of-flight mass spectrometry (HPLC-QTOF-MS) with Sequential Window Acquisition of All Theoretical Fragment Ion Spectra (SWATH) was applied to measure CERs and dhCERs in CSF, since it possesses a higher sensitivity (LLOQ = 0.1 pmol/mL) than the multiple reaction monitoring (MRM) acquisition carried on triple quadrupole (QqQ) MS. This method was validated and applied to CSF samples from patients who experienced postoperative ICI (63 patients) and controls who did not experience it after surgery (62 patients). This assay was linear over the measuring range 0.1-100 pmol/mL for these CER and dhCER species with good accuracy and precision. Elevated CERs and dhCERs were observed in CSF from patients who experienced postoperative ICI. CER 16:0 was found with a clinical sensitivity of 93.65 % and specificity of 87.1 % in distinguishing the 63 patients with ICI from the 62 controls. Therefore, this method could be applied in the detection of CERs and dhCERs in CSF, which were correlated with the presence of ICI. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Shi, Jiawei AU - Shi J AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China. FAU - Wang, Tingting AU - Wang T AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China. FAU - Guo, Haiyang AU - Guo H AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China. FAU - Li, Chen AU - Li C AD - Department of Neurosurgery, The First Hospital of Jilin University, Jilin 130021, China. FAU - Li, Li AU - Li L AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China. FAU - Jin, Yuting AU - Jin Y AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China. FAU - Chen, Haizhen AU - Chen H AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China. FAU - Huang, Jing AU - Huang J AD - Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin 130021, China; Department of Neurosurgery, The First Hospital of Jilin University, Jilin 130021, China. Electronic address: huangj@jlu.edu.cn. LA - eng PT - Journal Article DEP - 20220623 PL - England TA - J Pharm Biomed Anal JT - Journal of pharmaceutical and biomedical analysis JID - 8309336 RN - 0 (Ceramides) RN - 0 (dihydroceramide) SB - IM MH - *Ceramides MH - Chromatography, High Pressure Liquid MH - *Craniotomy/adverse effects MH - Humans MH - Mass Spectrometry OTO - NOTNLM OT - Ceramide OT - Dihydroceramide OT - HRMS OT - Intracranial infection after craniotomy OT - SWATH EDAT- 2022/07/01 06:00 MHDA- 2022/08/17 06:00 CRDT- 2022/06/30 18:16 PHST- 2022/01/05 00:00 [received] PHST- 2022/06/13 00:00 [revised] PHST- 2022/06/20 00:00 [accepted] PHST- 2022/07/01 06:00 [pubmed] PHST- 2022/08/17 06:00 [medline] PHST- 2022/06/30 18:16 [entrez] AID - S0731-7085(22)00328-4 [pii] AID - 10.1016/j.jpba.2022.114907 [doi] PST - ppublish SO - J Pharm Biomed Anal. 2022 Sep 20;219:114907. doi: 10.1016/j.jpba.2022.114907. Epub 2022 Jun 23.