Journal of Steroid Biochemistry and Molecular Biology最新文献

{"title":"The validation of an LC-MS/MS method for the quantification of vitamin D metabolites in human milk and their biological variability in Gambian women","authors":"Kerry S. Jones ,&nbsp;Sarah R. Meadows ,&nbsp;Georgia Billing ,&nbsp;Albert Koulman ,&nbsp;Ann Prentice","doi":"10.1016/j.jsbmb.2024.106633","DOIUrl":"10.1016/j.jsbmb.2024.106633","url":null,"abstract":"<div><div>Vitamin D is required for healthy growth and development, but data on human milk vitamin D content is limited. We describe a liquid chromatography tandem mass spectrometry (LC-MS/MS) method for the analysis of vitamin D metabolites in human milk, and its application in samples collected on two consecutive days from women in rural Gambia. Vitamin D compounds were extracted from 1 mL of milk by liquid-liquid extraction and derivatised with 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) prior to analysis by LC-MS/MS. The limit of quantification was 0.05 nmol/L for vitamin D₂, 0.025 nmol/L for vitamin D₃ and 0.1 nmol/L for 25(OH)D₂ and 25(OH)D₃. Within- and between-day imprecision was &lt;12 % for all analytes except vitamin D₂ (14 %).</div><div>From all data combined, geometric mean (-/+ 1 SD) vitamin D₃ concentration was 0.94 (0.43, 1.80) nmol/L and for 25(OH)D₃ 0.32 (0.23, 0.42) nmol/L. The within-person (intra-individual) coefficient of variation (%CV) was 32 % and 12 % for vitamin D₃ and 25(OH)D₃, respectively. Between-person (inter-individual) %CVs were 89 % and 34 % for vitamin D₃ and 25(OH)D₃, respectively. There was no significant association between vitamin D metabolite concentrations and milk fat (creamatocrit). Mean vitamin D content of human milk as ARA averaged 42 IU/L with 25(OH)D₃ responsible for around two-thirds of the biological activity. In conclusion, this work describes a reliable LC-MS/MS method for quantification of vitamin D and 25(OH)D in low volumes of human milk providing a platform for future work. This study contributes to current understanding of variability of milk vitamin D content.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106633"},"PeriodicalIF":2.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142640276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactions of sphingomyelin with biologically crucial side chain-hydroxylated cholesterol derivatives","authors":"Patrycja Dynarowicz-Latka ,&nbsp;Anna Chachaj-Brekiesz ,&nbsp;Anita Wnętrzak ,&nbsp;Jan Kobierski ,&nbsp;Andżelika Półtorak ,&nbsp;Dawid Lupa ,&nbsp;Ewelina W. Lipiec","doi":"10.1016/j.jsbmb.2024.106635","DOIUrl":"10.1016/j.jsbmb.2024.106635","url":null,"abstract":"<div><div>Oxysterols are interesting molecules due to their dual nature, reflecting beneficial and harmful effects on the body. An issue that still needs to be solved is how slight modification of their structure owing to the location of the additional polar group in the molecules affects their biological activity. With this in mind, we selected three side chain-hydroxylated oxysterols namely: 20(<em>S</em>)-hydroxycholesterol (20(<em>S</em>)-OH), 24(<em>S</em>)-hydroxycholesterol (24(<em>S</em>)-OH), and 27-hydroxycholesterol (27-OH), and examined their behavior in mixtures with the bioactive sphingolipid – sphingomyelin (SM). Our research was based on the Langmuir monolayer technique supplemented with molecular dynamics (MD) and microscopic observation of the films texture (Brewster angle microscopy, BAM, and atomic force microscopy, AFM). Additionally, since 20(<em>S</em>)-hydroxycholesterol has not been studied so far, we thoroughly characterized this oxysterol in one-component monolayers. Our studies showed differences in the interactions of the studied oxysterols and sphingomyelin. Namely, it was found that 20(<em>S</em>)-OH binds to SM, unlike 24(<em>S</em>)-OH and 27-OH, which both weakly interact with SM. This distinct behavior was interpreted within the molecular dynamics as being due to weak intermolecular interactions between 20(<em>S</em>)-OH molecules, which allowed easy incorporation of SM into the 20(<em>S</em>)-OH monolayer. In contrast, the strong oxysterol-oxysterol interactions occurring in monolayers with 24(<em>S</em>)-OH or 27-OH make this process more difficult. This may be important in the process of bone formation/resorption. Other aspects derived from our study are: <em>(i)</em> the tendency of oxysterols to incorporate into lipid rafts (leading to their modification in structure and function), as well as <em>(ii)</em> the formation of multilayer structures, in which oxysterols are arranged in the characteristic forms of “strings of beads”, which may facilitate their transport across the membrane.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106635"},"PeriodicalIF":2.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142640273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Steroid receptors in hormone dependent or sensitive cancers: The field of play now and looking forward","authors":"Donita Africander,&nbsp;Theresa Hickey","doi":"10.1016/j.jsbmb.2024.106637","DOIUrl":"10.1016/j.jsbmb.2024.106637","url":null,"abstract":"","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106637"},"PeriodicalIF":2.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A study of the role of androgen receptor and androgen receptor variant 7 in TNBC patients and the effect of their targeting by Enzalutamide and EPI-001 in MDA-MB-231","authors":"Belal M. Ali ,&nbsp;Hanan S. El-Abhar ,&nbsp;Ghada Mohamed ,&nbsp;Hanan R. Nassar ,&nbsp;Nelly Aliedin ,&nbsp;Marwa Sharaky ,&nbsp;Samia A. Shouman ,&nbsp;Marwa Kamel","doi":"10.1016/j.jsbmb.2024.106636","DOIUrl":"10.1016/j.jsbmb.2024.106636","url":null,"abstract":"<div><div>The lack of targeted therapy for triple-negative breast cancer (TNBC) is among the mainsprings of its poor prognosis. This study aimed to elucidate the role of the androgen receptor (AR) and its splice variant 7 (ARv7) in TNBC patients. Further, the molecular impact of their blockers, Enzalutamide and EPI-001, on the TNBC cell line MDA-MB-231 was investigated. Thereby, immunohistochemical expression of AR/ARv7 was assessed for TNBC Egyptian patients. Moreover, bioinformatics analysis of AR/ARv7 RNA status was carried out on TNBC patients from The Cancer Genome Atlas Breast Carcinoma project (TCGA-BRCA). Data from both groups was correlated with patients’ clinicopathological features. Besides, scratch wound healing assay and ELISA were employed to assess the effect of AR/ARv7 blockers on several metastasis markers in MDA-MB-231 cell line. In the Egyptian-TNBC patients, AR expression was associated with worse 7-year DFS (40.6 ± 18.6 %). In addition, ARv7 showed cytoplasmic and nuclear patterns, and both cytoplasmic and nuclear ARv7⁺ patients demonstrated a worse 7-year DFS (22.7 ± 17.7 % and 20 ± 17.9 %) and overall survival (63.6 ± 14.5 % and 40 ± 21.8 %). Importantly, 80 % of the nuclear ARv7⁺ patients developed distant metastasis. The data of the TCGA-TNBC patients showed a tendency for poor outcomes in the high ARv7-expressing patients. Molecularly, in MDA-MB-231, both inhibitors modulated metastasis and epithelial to mesenchymal transition (EMT) markers ROCK1, ROCK2, c-Myc, E-cadherin and N-cadherin, with EPI-001 downregulating NF-ĸB level as well. We concluded that ARv7 indicated poor prognosis in the studied cohorts and that blocking of AR/ARv7 abated metastasis and key regulators of EMT in MDA-MB-231, at least in part by targeting ROCK/NF-ĸB/c-Myc axis.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106636"},"PeriodicalIF":2.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Panax notoginseng saponins improves lipid metabolism and prevents atherosclerosis in mice with steroid-resistant lupus nephritis via the SIRT1/PPARγ signaling pathway","authors":"Zheng Xu ,&nbsp;Jie Huang ,&nbsp;Kaishun Shi ,&nbsp;Ying Lu","doi":"10.1016/j.jsbmb.2024.106631","DOIUrl":"10.1016/j.jsbmb.2024.106631","url":null,"abstract":"<div><div>Steroids serve as the primary medication for treating lupus nephritis (LN), however, steroid-resistance (SR) occurs sporadically in clinical practice, significantly affecting the therapeutic effect and long-term prognosis of patients. Our previous study found that panax notoginseng saponins (PNS) could partially reverse SR in LN. To further explore the role of PNS in reversing SR and reducing cardiovascular complications in LN, we conducted this study. Lupus mice were induced into SR while simultaneously receiving PNS. SIRT1-siRNA, SIRT1-siRNA NC, normal and lupus mice were used as control groups. Urine protein levels were measured at week 0, 4 and 8. Lipid metabolism-related biomarkers and renal function were assessed. The apoptosis rate of abdominal aortic endothelial cells was detected using flow-cytometry. The expression levels of PPARγ and SIRT1 were measured using RT-PCR and Western Blotting. Immunohistochemistry was performed to examine ACAT1 and VCAM-1 expressions. The results showed that compared to the SR lupus mice, the lupus mice treated with low/high dose PNS presented lower levels of urinary protein, serum creatinine, and blood lipids, a lower apoptosis rate of abdominal aortic endothelial cells, and decreased levels of ACAT1 and VCAM-1 PI in liver tissue, while the high-dose PNS exhibited more evidently. The PPARγ expression in SIRT1-siRNA group, as well as in low-dose and high-dose PNS groups was higher than that in the lupus and SR lupus group. In contrast, the expression of SIRT1 showed the opposite trend. Therefore, we conclude that PNS has the efficacy of reversing SR and ameliorating dyslipidemia in LN by modulating the SIRT1/PPARγ signaling pathway.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106631"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calcitriol prevents SARS-CoV spike-induced inflammation in human trophoblasts through downregulating ACE2 and TMPRSS2 expression","authors":"Rafael Vargas-Castro ,&nbsp;Janice García-Quiroz ,&nbsp;Andrea Olmos-Ortiz ,&nbsp;Euclides Avila ,&nbsp;Fernando Larrea ,&nbsp;Lorenza Díaz","doi":"10.1016/j.jsbmb.2024.106625","DOIUrl":"10.1016/j.jsbmb.2024.106625","url":null,"abstract":"<div><div>SARS-CoV-2, the causative virus of COVID-19, increases the risk of pregnancy complications including hypertensive disorders and placental inflammation. The spike glycoprotein mediates viral cell entry by interacting with the angiotensin-converting enzyme (ACE)2 in conjunction with the transmembrane serine protease 2 (TMPRSS2). ACE1, ACE2 and renin are components of the renin-angiotensin system (RAS), which regulates blood pressure. As the placenta expresses all these proteins, it is a target for SARS-CoV-2 and a source of blood pressure modulators. Noteworthy, an ACE1/ACE2 ratio imbalance can lead to RAS dysregulation and a bad prognosis in COVID-19 patients. Calcitriol, the most active vitamin D metabolite, negatively regulates RAS, reduces inflammation, and enhances antiviral immunity, thereby protecting against COVID-19 severity. However, contrasting information exists on the regulatory role of calcitriol upon RAS components and SARS-CoV-2 receptors; while the impact of calcitriol on spike-induced inflammation in placental cells has not been explored. Thus, we studied the effects of calcitriol on these parameters using the trophoblast cell line HTR-8/SVneo and primary syncytiotrophoblasts. By RT-qPCR, ELISA, and immunocytochemistry, we found that the spike enhanced proinflammatory cytokines expression and secretion, while calcitriol significantly downregulated this effect. Calcitriol also diminished <em>ACE1, ACE2, TMPRSS2</em>, and renin gene expression, as well as <em>ACE1/ACE2</em> mRNA ratio.</div></div><div><h3>Conclusions</h3><div>In the human placenta, calcitriol reduced the gene expression of main RAS components and <em>TMPRSS2</em>, resulting in the inhibition of spike-induced inflammation. This outcome suggest that vitamin D participates in restricting SARS-CoV-2 placental infection by rendering trophoblasts less permissive to infection while helping to regulate maternal blood pressure and decreasing inflammation.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106625"},"PeriodicalIF":2.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Causal influences of testosterone on brain structure change rate: A sex-stratified Mendelian randomization study","authors":"Xin Lian ,&nbsp;Yaqi Bai ,&nbsp;Pengyang Du ,&nbsp;Zhinan Jing ,&nbsp;Jimi Gao ,&nbsp;Fan Liu ,&nbsp;Jingjing Hu ,&nbsp;Yujia Xi","doi":"10.1016/j.jsbmb.2024.106629","DOIUrl":"10.1016/j.jsbmb.2024.106629","url":null,"abstract":"<div><div>The impact of testosterone levels on changes in brain structure has been reported. However, it is still unclear which specific brain region could be affected. This study approached Mendelian randomization method to reveal the causal relationship between testosterone levels and the rate of longitudinal structural changes in the brain. The testosterone-related GWAS data were determined from 425,097 European participants. The GWAS data on the rate of longitudinal structural changes in the brain came from the ENIGMA consortium, which included 15,640 all-age participants from 40 longitudinal cohorts. The inverse variance weighted was considered as the main estimate, MR Egger and weighted median methods were used to supplement IVW. A positive correlation was found between total testosterone levels and bioavailable testosterone levels in women and age-independent longitudinal changes in cerebral WM and surface area. The sex hormone-binding globulin levels were found a negative correlation with age-dependent longitudinal structural changes of cortical GM in men. Additionally, we also found that the bioavailable testosterone level in males was negatively associated with the quadratic age-dependent longitudinal change rate in the globus pallidum. We also found estradiol levels and sex hormone-binding globulin levels were negatively associated with the quadratic age-dependent longitudinal change rate of total brain in men. Moreover, we found a positive correlation between total testosterone levels and linear age-dependent longitudinal changes in the hippocampus in both males and females. The testosterone levels in different genders may have varying degrees of causal effects on the structural changes of brain regions. These findings provide evidence for the influence of the brain glandular axis on brain structure, particularly during female brain development.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106629"},"PeriodicalIF":2.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142559373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic inhibitory effects of tetramethylpyrazine and evodiamine on endometriosis development","authors":"Xiaohan Liu ,&nbsp;Qingjun Shen ,&nbsp;Liqin Cheng,&nbsp;Kailing Dai,&nbsp;Qiaozhu Wu,&nbsp;Xiaole Liu,&nbsp;Paul Yao,&nbsp;Liqin Zeng","doi":"10.1016/j.jsbmb.2024.106630","DOIUrl":"10.1016/j.jsbmb.2024.106630","url":null,"abstract":"<div><div>Endometriosis (EMS) belongs to a gynecological disorder with inflammation and the existence of endometrial-like tissues beyond the uterus, often leading to infertility and pelvic pain. Estrogen receptor β (ERβ) is significantly expressed in endometriosis (EMS) and recognized as a promising therapeutic target for EMS treatment by inhibiting ERβ activity. In this study, we investigated the potential mechanisms for tetramethylpyrazine (TMP)-mediated ERβ suppression, and the synergistic inhibitory effect of TMP and evodiamine (EVO) on ERβ expression and EMS development. We found that TMP suppresses ERβ expression by reducing the association of Oct3/4 with the ERβ promoter and decreasing Oct3/4 protein levels without affecting Oct3/4 transcript levels. A minimum dosage of 10 µM TMP is required to inhibit ERβ expression. Neither TMP (5 µM) nor EVO (2 µM) alone had any effect, but their combination synergistically inhibited ERβ expression and modulated related cellular processes, including redox balance, mitochondrial function, inflammation, and proliferation. Additionally, the combination of TMP (10 mg/kg body weight) and EVO (5 mg/kg) synergistically inhibited ERβ expression and EMS development in the mouse model. In conclusion, TMP suppresses ERβ expression by reducing the association of Oct3/4 with the ERβ promoter. Neither TMP nor EVO alone effectively suppresses ERβ in both laboratory and live organism models. However, their combination synergistically inhibits ERβ expression and EMS development, suggesting a potential therapeutic strategy for EMS using TMP and EVO.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106630"},"PeriodicalIF":2.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochemical classification diagnosis of polycystic ovary syndrome based on serum steroid hormones","authors":"Min Wang ,&nbsp;Shuhan Zhang ,&nbsp;Jun He ,&nbsp;Tianqi Zhang ,&nbsp;Huaijun Zhu ,&nbsp;Runbin Sun ,&nbsp;Na Yang","doi":"10.1016/j.jsbmb.2024.106626","DOIUrl":"10.1016/j.jsbmb.2024.106626","url":null,"abstract":"<div><div>Polycystic ovary syndrome (PCOS) is a metabolic disorder with clinical heterogeneity. PCOS women with non-hyperandrogenemia (NA) might be misdiagnosed due to a lack of diagnostic markers. This study aims to systematically analyze the differences in steroid hormones between PCOS women with hyperandrogenemia (HA) and NA, and to screen classification diagnosis models for PCOS. The serum samples from 54 HA-PCOS, 79 NA-PCOS and 60 control women (Non-PCOS) aged between 18 and 35 were measured by an integrated steroid hormone-targeted quantification assay using LC-MS/MS. The levels of serum androgens, corticosteroids, progestins and estrogens in the steroid hormone biosynthesis pathway were analyzed in PCOS and Non-PCOS women. Eight machine learning methods including Linear Discriminant Analysis (LDA), K-nearest Neighbors (KNN), Boosted Logistic Regression (LogitBoost), Naive Bayes (NB), C5.0 algorithm (C5), Random Forest (RF), Support Vector Machines (SVM), and Neural Network (NNET) were performed, evaluated and selected for classification diagnosis of PCOS. A 10-fold cross-validation on the training set was performed. The whole metabolic flux from cholesterol to downstream steroid hormones increased significantly in PCOS, especially in HA-POCS women. The RF model was chosen for the classification diagnosis of HA-PCOS, NA-PCOS, and Non-PCOS women due to the maximum average accuracy (0.938, <em>p</em>&lt;0.001), AUC (0.989, <em>p</em>&lt;0.001), and kappa (0.906, <em>p</em>&lt;0.001), and the minimum logLoss (0.200, <em>p</em>&lt;0.001). Five steroid hormones including testosterone, androstenedione, total 2-methoxyestradiol, total 4-methoxyestradiol, and free estrone were selected as the decision trees for the simplified RF model. A total of 37 women were included in the validation set. The diagnostic sensitivity for HA-PCOS, NA-PCOS, and Non-PCOS was 100 %, 93.3 % and 91.7 %, respectively. HA-PCOS, NA-PCOS, and Non-PCOS women showed obvious different steroid hormone profiles. The simplified RF model based on two androgens and three estrogens could be effectively applied to the classification diagnosis of PCOS, further reducing the missed diagnosis rate of NA-PCOS.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106626"},"PeriodicalIF":2.7,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An optimized whole-body corticosteroid hormones quantification method by LC-MS/MS for assessing stress levels in European glass eels (Anguilla anguilla)","authors":"Stellia Sebihi ,&nbsp;Mathilde Monperrus ,&nbsp;Pascale Coste ,&nbsp;Emmanuel Huchet ,&nbsp;Matthieu Lingrand ,&nbsp;Stéphane Glise ,&nbsp;Colin Bouchard ,&nbsp;Maren Ortiz-Zarragoitia ,&nbsp;Valérie Bolliet","doi":"10.1016/j.jsbmb.2024.106627","DOIUrl":"10.1016/j.jsbmb.2024.106627","url":null,"abstract":"<div><div>The European eel (<em>Anguilla anguilla</em>) juvenile stage exhibits facultative estuarine migration. The causes of this behavior are yet unknown but it may have an impact on the population's fate by altering the sex ratio of the population. Recent studies have highlighted potential stress-related issues in glass eels settling in estuaries but studying stress response in small organisms requires sensitive, accurate and precise analytical methods. The aims of the present study are (i) to develop a whole-body Liquid Chromatography-Mass Spectrometry (LC-MS/MS) method for the simultaneous determination of several stress hormones in low-body mass fish; (ii) to apply this method to glass eels to study their responses to acute stress (iii) to test the effect of anxiolytics (diazepam) on these responses. Our results showed that enhanced LC-MS/MS analysis reduced detection limits and improved accuracy and precision for the quantification at the individual level. Following an acute stress, cortisol concentration significantly increased in glass eels and a 15 h diazepam exposure significantly reduced cortisol levels highlighting a marked anxiolytic effect on this species.</div></div>","PeriodicalId":51106,"journal":{"name":"Journal of Steroid Biochemistry and Molecular Biology","volume":"245 ","pages":"Article 106627"},"PeriodicalIF":2.7,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}