cortisol metabolism

皮质醇代谢
  • 文章类型: Journal Article
    代谢综合征和高皮质醇血症的临床表现的相似性支持以下假设:肥胖可能与脂肪组织中皮质醇作用和代谢相关基因的表达受损有关。编码糖皮质激素受体α(GR)的基因的表达,皮质醇代谢酶(HSD11B1,HSD11B2,H6PDH),和脂肪因子,以及选定的microRNA,通过实时PCR检测75例肥胖患者的脂肪组织,19例代谢手术后,和25名体重正常的受试者。通过LC-MS/MS分析30对组织中的皮质醇水平。在肥胖患者的内脏脂肪组织(VAT)中,所有研究基因的mRNA水平均显着(p<0.05)降低,并因体重减轻而恢复正常。在皮下脂肪组织(SAT),GR和HSD11B2受此现象的影响。在所研究基因的mRNA水平和选定的miRNA之间观察到负相关(hsa-miR-142-3p,hsa-miR-561和hsa-miR-579)。然而,观察到的变化并没有转化为组织皮质醇浓度的差异,尽管肥胖患者SAT中这种激素的水平与脂联素的mRNA水平呈负相关。总之,尽管脂肪组织中皮质醇作用和代谢相关基因的表达在肥胖中发生了改变,miRNAs可能参与了这一过程,这些变化不影响组织皮质醇浓度。
    The similarity of the clinical picture of metabolic syndrome and hypercortisolemia supports the hypothesis that obesity may be associated with impaired expression of genes related to cortisol action and metabolism in adipose tissue. The expression of genes encoding the glucocorticoid receptor alpha (GR), cortisol metabolizing enzymes (HSD11B1, HSD11B2, H6PDH), and adipokines, as well as selected microRNAs, was measured by real-time PCR in adipose tissue from 75 patients with obesity, 19 patients following metabolic surgery, and 25 normal-weight subjects. Cortisol levels were analyzed by LC-MS/MS in 30 pairs of tissues. The mRNA levels of all genes studied were significantly (p < 0.05) decreased in the visceral adipose tissue (VAT) of patients with obesity and normalized by weight loss. In the subcutaneous adipose tissue (SAT), GR and HSD11B2 were affected by this phenomenon. Negative correlations were observed between the mRNA levels of the investigated genes and selected miRNAs (hsa-miR-142-3p, hsa-miR-561, and hsa-miR-579). However, the observed changes did not translate into differences in tissue cortisol concentrations, although levels of this hormone in the SAT of patients with obesity correlated negatively with mRNA levels for adiponectin. In conclusion, although the expression of genes related to cortisol action and metabolism in adipose tissue is altered in obesity and miRNAs may be involved in this process, these changes do not affect tissue cortisol concentrations.
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  • 文章类型: Journal Article
    Oral once-daily dual-release hydrocortisone (DR-HC) replacement therapy has demonstrated an improved metabolic profile compared to conventional 3-times-daily (TID-HC) therapy among patients with primary adrenal insufficiency. This effect might be related to a more physiological cortisol profile, but also to a modified pattern of cortisol metabolism.
    This work aimed to study cortisol metabolism during DR-HC and TID-HC.
    A randomized, 12-week, crossover study was conducted.
    DC-HC and same daily dose of TID-HC were administered to patients with primary adrenal insufficiency (n = 50) vs healthy individuals (n = 124) as controls.
    Urinary corticosteroid metabolites were measured by gas chromatography/mass spectrometry at 24-hour urinary collections.
    Total cortisol metabolites decreased during DR-HC compared to TID-HC (P < .001) and reached control values (P = .089). During DR-HC, 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) activity measured by tetrahydrocortisol + 5α-tetrahydrocortisol/tetrahydrocortisone ratio was reduced compared to TID-HC (P < .05), but remained increased vs controls (P < .001). 11β-HSD2 activity measured by urinary free cortisone/free cortisol ratio was decreased with TID-HC vs controls (P < .01) but normalized with DR-HC (P = .358). 5α- and 5β-reduced metabolites were decreased with DR-HC compared to TID-HC. Tetrahydrocortisol/5α-tetrahydrocortisol ratio was increased during both treatments, suggesting increased 5β-reductase activity.
    The urinary cortisol metabolome shows striking abnormalities in patients receiving conventional TID-HC replacement therapy, with increased 11β-HSD1 activity that may account for the unfavorable metabolic phenotype in primary adrenal insufficiency. Its change toward normalization with DR-HC may mediate beneficial metabolic effects. The urinary cortisol metabolome may serve as a tool to assess optimal cortisol replacement therapy.
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  • 文章类型: Journal Article
    UNASSIGNED: Individuals exposed to childhood trauma display longstanding modifications of the Hypothalamic-Pituitary-Adrenal (HPA) axis, as well as cognitive impairments. Schizophrenia spectrum disorder (SZ) and bipolar disorders (BD) are characterised by higher prevalence of childhood trauma, abnormal HPA axis, and cognitive dysfunction. Elevated cortisol metabolism was recently demonstrated in both disorders. However, it is yet to be established if childhood adversity is associated with cortisol metabolism in this population, and how this may be associated with cognitive function.
    UNASSIGNED: One-hundred-and-fourteen participants with a DSM-IV SZ or BD diagnosis took part in the study. Diagnoses were evaluated by the Structured Clinical Interview for DSM-IV Axis I disorders (SCID-I). Estimated cortisol metabolizing activity (5α-reductase and 5β-reductase) was assessed by urinary free cortisol, and metabolites. All patients underwent cognitive assessment and completed the Childhood Trauma Questionnaire.
    UNASSIGNED: Estimated 5β-reductase activity was elevated in participant with childhood physical abuse (r = 0.26, p = 0.005). After adjusting for age, sex and diagnosis, physical abuse was still nominally associated with elevated 5β-reductase. Moreover, only high 5α-reductase activity was negatively correlated with working memory and executive performance (r = -0.23, p = 0.01; r = -0.19, p = 0.05, respectively), however this disappeared after adjusting for age, sex and diagnosis. Cortisol metabolism did not mediate the association between childhood trauma and cognitive function.
    UNASSIGNED: Our study indicates that childhood physical abuse is associated with elevated cortisol metabolism (5β-reductase) in adults with a SZ or BD disorder. However, our study did not support cortisol metabolism as a mediator between childhood trauma experiences and cognitive function within these disorders.
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  • 文章类型: Journal Article
    Aim, materials & methods: Urinary cortisol profile has the potential as a diagnostic biomarker. We therefore developed a stable-isotope dilution ultraperformance chromatography multistage MS-based method to quantify cortisol and 16 metabolites in human urines. Results & conclusion: The LOD for cortisol and its metabolites ranges from 0.02 to 5.81 pg/μl urine. The inter- and intraday variations were 3.7-12.9% and 3.5-15.6%, respectively. Among the metabolites analyzed, significant person-to-person heterogeneity was observed, demonstrating the need for comprehensive metabolite profiling in diagnosis. Nevertheless, the glucuronides of dihydrocortisol, dihydrocortisone, tetrahydrocortisol, allo-tetrahydrocortisol and tetrahydrocortisone are the major ones. The sum of the glucuronidated and free forms constitute >93% of the metabolites analyzed, which is termed as total cortisol equivalent. Total cortisol equivalent may serve as a surrogate of cortisol secretion. Clinical trial registration number: NCT02500472.
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  • 文章类型: Journal Article
    UNASSIGNED: Derangement of 11-β hydroxysteroid dehydrogenase type 1 and type 2 (11β-HSD1 and 11β-HSD2), which regulate intracellular cortisol production, has been suggested in both type 2 diabetes (T2D) and chronic kidney disease (CKD). However, activity of 11β-HSD enzymes in patients with T2D and CKD has never been assessed.
    UNASSIGNED: To compare 11β-HSD activities between patients with T2D and healthy controls, and assess whether in T2D, renal function is associated with 11β-HSD activities.
    UNASSIGNED: Cross-sectional analysis in the Diabetes and Lifestyle Cohort Twente (DIALECT-1).
    UNASSIGNED: Referral center for T2D.
    UNASSIGNED: Patient with T2D [n = 373, age 64 ± 9 years, 58% men, 26% of patients estimated glomerular filtration rate (eGFR) <60 mL/min·1.73 m2] and healthy controls (n = 275, age 53 ± 11 years, 48% men).
    UNASSIGNED: We measured cortisol, cortisone, and metabolites [tetrahydrocortisol (THF), allo-THF (aTHF), and tetrahydrocortisone (THE)] in 24-hour urine samples. Whole body 11β-HSD and 11β-HSD2 activities were calculated as the urinary (THF + aTHF)/THE and cortisol/cortisone ratios, respectively.
    UNASSIGNED: Patients with T2D had a higher (THF + aTHF)/THE ratio [1.02 (0.84 to 1.27) vs 0.94 (0.79 to 1.0), P < 0.001] and cortisol/cortisone ratio [0.70 (0.58 to 0.83) vs 0.63 (0.54 to 0.74), P < 0.001] than healthy controls. In T2D, lower eGFR was associated with a higher (THF + aTHF)/THE ratio (β = -0.35, P < 0.001), and a higher cortisol/cortisone ratio (β = -0.16, P = 0.001).
    UNASSIGNED: In this real-life secondary care setting of patients with T2D, 11β-HSD enzymes activities were shifted to higher intracellular cortisol production in T2D, which was further aggravated in patients with CKD. Prospective analyses are warranted to investigate causality of these associations.
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  • 文章类型: Journal Article
    Recently, there have been advances in understanding of the changes that occur in the hypothalamic-pituitary-adrenal axis during the different stages of critical disease. Such advances have led to a paradigm change, so that the aforementioned adaptations are no longer considered the result of adrenal axis activation, but a consequence of decreased cortisol metabolism illness. Knowledge of this new pathophysiological bases should lead to reconsider the diagnosis and treatment of adrenal insufficiency in critically ill patients, a condition poorly understood to date.
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  • 文章类型: Comparative Study
    BACKGROUND: Patients with congenital adrenal hyperplasia due to 21-hydroxylase deficiency (21OHD) have an impaired cortisol synthesis, but it is unknown whether the metabolism of glucocorticoids differs between neonates and infants with and without 21OHD.
    OBJECTIVE: The objective of this study was to compare the glucocorticoid metabolism between neonates and infants with and without 21OHD.
    METHODS: We analyzed 14 urinary glucocorticoid metabolites, 7 metabolites each of cortisol and cortisone, by gas chromatography-mass spectrometry of 89 untreated 21OHD neonates and infants and 161 neonates and infants without 21OHD.
    RESULTS: Neonates with 21OHD exhibit elevated relative amounts of cortisol metabolites in total glucocorticoid metabolism and an increased ratio of cortisol to cortisone metabolites (p<0.0001). This reflects a shift toward cortisol in the relative balance of the interconversion between cortisol and cortisone. The ratio of cortisol to cortisone metabolites correlated significantly with low urinary glucocorticoid concentrations (p<0.03), with low 21-hydroxylase activity (p<0.001) and high urinary sodium and chloride concentrations (p<0.05) in neonates with 21OHD.
    CONCLUSIONS: Our results demonstrate substantial changes in the relative cortisone to cortisol interconversion in neonates with 21OHD. The shift of glucocorticoid metabolism toward active cortisol in neonates with 21OHD seems to be related to the severity of 21OHD and adrenal dysfunction. Our data provide new insights into the regulation of glucocorticoid homeostasis in 21OHD.
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